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1

GHRS Observations of the Lyman alpha Forest  

E-Print Network (OSTI)

I review the results obtained using the GHRS on low redshift Lyman alpha absorbers. Until the advent of HST and the GHRS, the existence of such absorbers was doubted. The confirmation of their existence, in one of the first GHRS GTO team results to be published, must rank as one of the HSTs most interesting results. The GHRS resolution allows us to probe equivalent widths well below those detectable with the FOS, and has led to a number of interesting new questions. One example is the apparent disagreement between the GHRS result that there are many Lyman alpha absorbers which are not associated with luminous galaxies, and FOS studies which suggest that all such absorbers have a nearby galaxy causing them. This almost certainly shows that the equivalent width (or column density) range reachable by the GHRS includes gas from a wide range of causes, and not only the halos of luminous galaxies. With these data, we are seeing the debris left over from Galaxy formation, material flung out from galaxy interactions and starbursts, and also diffuse halo material at the outer edges of normal galaxies.

Simon L. Morris

1996-10-28T23:59:59.000Z

2

An Analysis of Astrophysics and Fundamental Physics from the Lyman-alpha Forest /  

E-Print Network (OSTI)

information regarding fundamental physics that is waiting toof Astrophysics and Fundamental Physics from the Lyman-alphaof Astrophysics and Fundamental Physics from the Lyman-alpha

Day, Aaron Joseph

2013-01-01T23:59:59.000Z

3

The BOSS Lyman-alpha Forest Sample from SDSS Data Release 9  

E-Print Network (OSTI)

We present the BOSS Lyman-alpha (Lya) Forest Sample from SDSS Data Release 9, comprising 54,468 quasar spectra with zqso > 2.15 suitable for Lya forest analysis. This data set probes the intergalactic medium with absorption redshifts 2.0 1216 Ang), extrapolated into the forest region and normalized by a linear function to fit the expected evolution of the Lya forest mean-flux. The estimated continuum errors are ~5% rms. We also discuss possible systematics arising from uncertain spectrophotometry and artifacts in the flux calibration; global corrections for the latter are provided. Our sample provides a convenient starting point for users to analyze clustering in BOSS Lya forest data, and it provides a fiducial data set that can be used to compare results from different analyses of baryon acoustic oscillations in the Lya forest. The full data set is available from the SDSS-III DR9 web site.

Lee, Khee-Gan; Bartsch, Leslie E; Carithers, William; Dawson, Kyle S; Kirkby, David; Lundgren, Britt; Margala, Daniel; Palanque-Delabrouille, Nathalie; Pieri, Matthew M; Schlegel, David J; Weinberg, David H; Yeche, Christophe; Aubourg, Eric; Bautista, Julian; Bizyaev, Dmitry; Blomquist, Michael; Bolton, Adam S; Borde, Arnaud; Brewington, Howard; Busca, Nicolas G; Croft, Rupert A C; Delubac, Timothee; Ebelke, Garrett; Eisenstein, Daniel J; Font-Ribera, Andreu; Ge, Jian; Hamilton, Jean-Christophe; Hennawi, Joseph F; Ho, Shirley; Honscheid, Klaus; Goff, Jean-Marc Le; Malanushenko, Elena; Malanushenko, Viktor; Miralda-Escude, Jordi; Myers, Adam D; Noterdaeme, Pasquier; Oravetz, Daniel; Pan, Kaike; Paris, Isabelle; Petitjean, Patrick; Rich, James; Rollinde, Emmanuel; Ross, Nicholas P; Rossi, Graziano; Schneider, Donald P; Simmons, Audrey; Snedden, Stephanie; Slosar, Anze; Spergel, David N; Suzuki, Nao; Viel, Matteo; Weaver, Benjamin A

2012-01-01T23:59:59.000Z

4

Tightening Constraints from the Lyman Alpha Forest with the Flux Probability Distribution Function  

E-Print Network (OSTI)

The analysis of the Lyman-alpha forest of absorption lines in quasar spectra has emerged as a potentially powerful technique to constrain the linear matter power spectrum. In most previous work, the amplitude of the ionizing background was fixed by calibrating simulations to match the observed mean transmitted flux in the Lyman-alpha forest. This procedure is undesirable in principle as it requires the estimation of the unabsorbed quasar continuum level, a difficult undertaking subject to various sources of systematic error and bias. We suggest an alternative approach based on measuring the one-point probability distribution function (pdf) of the fluctuations in the flux about the mean, relative to the mean, i.e. the pdf of delta_f = (f - )/. This statistic, while sensitive to the amplitude of the ionizing background, has the virtue that its measurement does not require an estimate of the unabsorbed continuum level. We present a measurement of the pdf of delta_f from seven Keck HIRES spectra, spanning a redshift range of z = 2.2 - 4.4. To illustrate that our method is useful, we compare our measurements of the pdf of delta_f, and measurements of the flux power spectrum from Croft et al. (2002) at z = 2.72, with cosmological simulations. From this comparison, we obtain constraints on the mean transmission in the Lyman-alpha forest, the slope of the temperature-density relation, as well as the amplitude and slope of the mass power spectrum. Our methodology will be useful for obtaining more precise constraints with larger data samples from the Sloan Digital Sky Survey (SDSS).

Adam Lidz; Katrin Heitmann; Lam Hui; Salman Habib; Michael Rauch; Wallace L. W. Sargent

2005-05-06T23:59:59.000Z

5

Probing the Universe with the Lyman-alpha Forest: I. Hydrodynamics of the Low Density IGM  

E-Print Network (OSTI)

We introduce an efficient and accurate alternative to full hydrodynamic simulations, Hydro-PM (HPM), for the study of the low column density Lyman-alpha forest. It consists of a Particle-Mesh solver, modified to compute, in addition to the gravitational potential, an effective potential due to the gas pressure. Such an effective potential can be computed from the density field because of a tight correlation between density and pressure in the low density limit, which can be calculated for any photo-reionization history by a method outlined in Hui & Gnedin (1997). Such a correlation exists, in part, because of minimal shock-heating in the low density limit. We compare carefully the density and velocity fields as well as absorption spectra, computed using HPM versus hydrodynamic simulations, and find good agreement. We show that HPM is capable of reproducing measurable quantities, such as the column density distribution, computed from full hydrodynamic simulations, to a precision comparable to that of observations. We discuss how, by virtue of its speed and accuracy, HPM can enable us to use the Lyman-alpha forest as a cosmological probe. We also discuss in detail the smoothing of the gas (or baryon) fluctuation relative to that of the dark matter on small scales due to finite gas pressure. It is shown the conventional wisdom that the linear gas fluctuation is smoothed on the Jeans scale is incorrect for general reionization (or reheating) history; the correct linear filtering scale is in general smaller than the Jeans scale after reheating, but larger prior to it. (abridged)

Nickolay Y. Gnedin; Lam Hui

1997-06-20T23:59:59.000Z

6

The Lyman-alpha forest as a probe of fundamental physics  

E-Print Network (OSTI)

We use LUQAS, a sample of 27 high resolution high signal-to-noise UVES quasar (QSO) spectra (Kim et al. 2004), and the Croft et al. (2002) sample together with a set of high resolution large box size hydro-dynamical simulations run with the code GADGET-II to recover the linear dark matter power spectrum at z>2 and at scales of 1-40 Mpc/h. These scales cannot be probed by any other observable. We address some of the uncertainties in the theoretical modelling of the Lyman-alpha forest structures such as the difference between full hydro-dynamical simulations and a more simplified scheme based on the HPM (Hydro-Particle-Mesh) technique. We combine these data sets with the Cosmic Microwave Background (CMB) data of WMAP in order to get tighter constraints on cosmological parameters. We focus on the recovered values of the power spectrum amplitude, the primordial spectral index and the running of the primordial spectral index. By considering models of slow-roll inflation we give constraints on inflationary paramete...

Viel, M

2005-01-01T23:59:59.000Z

7

Testing the accuracy of the Hydro-PM approximation in numerical simulations of the Lyman-alpha forest  

E-Print Network (OSTI)

We implement the hydro-PM (HPM) technique (Gnedin & Hui 1998) in the hydrodynamical simulation code GADGET-II and quantify the differences between this approximate method and full hydrodynamical simulations of the Lyman-alpha forest in a concordance LCDM model. At redshifts z=3 and z=4, the differences between the gas and dark matter (DM) distributions, as measured by the one-point distribution of density fluctuations, the density power spectrum and the flux power spectrum, systematically decrease with increasing resolution of the HPM simulqation. However, reducing these differences to less than a few percent requires a significantly larger number of grid-cells than particles, with a correspondingly larger demand for memory. Significant differences in the flux decrement distribution remain even for very high resolution hydro-PM simulations, particularly at low redshift. At z=2, the differences between the flux power spectra obtained from HPM simulations and full hydrodynamical simulations are generally la...

Viel, M; Springel, V; Viel, Matteo; Haehnelt, Martin G.; Springel, Volker

2006-01-01T23:59:59.000Z

8

Testing the accuracy of the Hydro-PM approximation in numerical simulations of the Lyman-alpha forest  

E-Print Network (OSTI)

We implement the hydro-PM (HPM) technique (Gnedin & Hui 1998) in the hydrodynamical simulation code GADGET-II and quantify the differences between this approximate method and full hydrodynamical simulations of the Lyman-alpha forest in a concordance LCDM model. At redshifts z=3 and z=4, the differences between the gas and dark matter (DM) distributions, as measured by the one-point distribution of density fluctuations, the density power spectrum and the flux power spectrum, systematically decrease with increasing resolution of the HPM simulqation. However, reducing these differences to less than a few percent requires a significantly larger number of grid-cells than particles, with a correspondingly larger demand for memory. Significant differences in the flux decrement distribution remain even for very high resolution hydro-PM simulations, particularly at low redshift. At z=2, the differences between the flux power spectra obtained from HPM simulations and full hydrodynamical simulations are generally large and of the order of 20-30 %, and do not decrease with increasing resolution of the HPM simulation. This is due to the presence of large amounts of shock-heated gas, a situation which is not adequately modelled by the HPM approximation. We confirm the results of Gnedin & Hui (1998) that the statistical properties of the flux distribution are discrepant by > 5-20 % when compared to full hydrodynamical simulations. The discrepancies in the flux power spectrum are strongly scale- and redshift-dependent and extend to large scales. Considerable caution is needed in attempts to use calibrated HPM simulations for quantitative predictions of the flux power spectrum and other statistical properties of the Lyman-alpha forest.

Matteo Viel; Martin G. Haehnelt; Volker Springel

2005-04-28T23:59:59.000Z

9

Dark energy and curvature from a future baryonic acoustic oscillation survey using the Lyman-alpha forest  

E-Print Network (OSTI)

We explore the requirements for a Lyman-alpha forest (LyaF) survey designed to measure the angular diameter distance and Hubble parameter at 2~Energy Task Force Figure of Merit, relative to the case with only a similar precision measurement at z~1, if the Universe is not assumed to be flat. This improvement is greater than the one obtained by doubling the size of the z~1 survey, with Planck and a weak SDSS-like z=0.3 BAO measurement assumed in each case. Galaxy BAO surveys at z~1 may be able to make an effective LyaF measurement simultaneously at minimal added cost, because the required number density of quasars is relatively small. We discuss the constraining power as a function of area, magnitude limit (density of quasars), resolution, and signal-to-noise of the spectra. For example, a survey covering 2000 sq. deg. and achieving S/N=1.8 per Ang. at g=23 (~40 quasars per sq. deg.) with an R~>250 spectrograph is sufficient to measure both the radial and transverse oscillation scales to 1.4% from the LyaF (or better, if fainter magnitudes and possibly Lyman-break galaxies can be used). At fixed integration time and in the sky-noise-dominated limit, a wider, noisier survey is generally more efficient; the only fundamental upper limit on noise being the need to identify a quasar and find a redshift. Because the LyaF is much closer to linear and generally better understood than galaxies, systematic errors are even less likely to be a problem.

Patrick McDonald; Daniel Eisenstein

2006-07-07T23:59:59.000Z

10

The Linear Theory Power Spectrum from the Lyman-alpha Forest in the Sloan Digital Sky Survey  

E-Print Network (OSTI)

We analyze the SDSS Lyman-alpha forest P_F(k,z) measurement to determine the linear theory power spectrum. Our analysis is based on fully hydrodynamic simulations, extended using hydro-PM simulations. We account for the effect of absorbers with damping wings, which leads to an increase in the slope of the linear power spectrum. We break the degeneracy between the mean level of absorption and the linear power spectrum without significant use of external constraints, which is possible because of the high precision of the P_F(k,z) measurements over a wide range of redshift and scale. We infer linear theory power spectrum amplitude Delta^2_L(k_p=0.009s/km,z_p=3.0)=0.452_{-0.057-0.116}^{+0.069+0.141} and slope n_eff(k_p,z_p)=-2.321_{-0.047-0.102}^{+0.055+0.131} (errors are Delta chi^2=1 and 4, with possible systematic errors included through nuisance parameters in the fit; the errors are correlated with r~0.63). The inferred curvature of the linear power spectrum and the evolution of its amplitude and slope with r...

McDonald, P; Cen, R; Weinberg, D H; Burles, S; Schneider, D P; Schlegel, D J; Bahcall, Neta A; Brinkmann, J; Ivezic, Z; Kent, S; Vanden Berk, Daniel E

2004-01-01T23:59:59.000Z

11

Inferring the dark matter power spectrum from the Lyman-alpha forest in high-resolution QSO absorption spectra  

E-Print Network (OSTI)

We use the LUQAS sample (Kim et al. 2004), a set of 27 high-resolution and high signal-to-noise QSO absorption spectra at a median redshift of z=2.25, and the data from Croft et al. (2002) at a median redshift of z=2.72, together with a large suite of high-resolution large box-size hydro-dynamical simulations, to estimate the linear dark matter power spectrum on scales 0.003 s/km power spectrum at z=2.72 also agrees with that inferred from LUQAS at lower redshift if we assume that the increase of the amplitude is due to gravitational growth between these redshifts. We further argue that the smaller mean optical depth measured from high-resolution spectra is more accurate than the larger value obtained from low-resolution spectra by Press et al. (1993) which Croft et al. used. For the smaller optical depth we obtain a ~ 20% higher value for the rms fluctuation amplitude of the matter density. By combining the amplitude of the matter power spectrum inferred from the Lyman-alpha forest with the amplitude on large scales inferred from measurements of the CMB we obtain constraints on the primordial spectral index n and the normalisation sigma_8. For values of the mean optical depth favoured by high-resolution spectra, the inferred linear power spectrum is consistent with a LambdaCDM model with a scale-free (n=1) primordial power spectrum.

Matteo Viel; Martin G. Haehnelt; Volker Springel

2004-04-30T23:59:59.000Z

12

The Large Area Lyman Alpha Survey  

E-Print Network (OSTI)

The Lyman-$\\alpha$ line is expected to be strong in the presence of active star formation and the absence of dust, making it a good tool for finding chemically primitive galaxies in the early universe. We report on a new survey for high redshift Lyman-$\\alpha$ sources, the Large Area Lyman Alpha (LALA) survey. Our survey achieves an unprecedented combination of volume and sensitivity by using narrow-band filters on the new $8192^2$ pixel CCD Mosaic Camera at the 4 meter Mayall telescope of Kitt Peak National Observatory. Well-detected sources with flux and equivalent width matching known high redshift Lyman-$\\alpha$ galaxies have an observed surface density corresponding to $11000 \\pm 700$ per square degree per unit redshift at $z=4.5$. Early spectroscopic followup from the Keck telescope suggests that $\\sim 1/3$ of these are actually at $z\\approx 4.5$, and has confirmed five $z > 4$ Lyman-$\\alpha$ emitters so far. Combining our photometric survey with spectroscopic results, we estimate a net density of $\\sim 4000 $ Lyman-$\\alpha$ emitters per square degree per unit redshift at $z\\approx 4.5$. The star formation rate density (estimated both from UV continuum and from line emission) is comparable to that of the Lyman break galaxy population within present uncertainties. The most extreme Lyman-$\\alpha$ emitters in our sample have rest frame equivalent widths $> 100\\AA$, consistent with the expectations for the first burst of star formation in a primitive, dust-free galaxy.

James E. Rhoads; Sangeeta Malhotra; Arjun Dey; Buell T. Jannuzi; Daniel Stern; Hyron Spinrad

2001-04-18T23:59:59.000Z

13

The Large Area Lyman Alpha Survey  

E-Print Network (OSTI)

The Lyman-$\\alpha$ line is expected to be strong in the presence of active star formation and the absence of dust, making it a good tool for finding chemically primitive galaxies in the early universe. We report on a new survey for high redshift Lyman-$\\alpha$ sources, the Large Area Lyman Alpha (LALA) survey. Our survey achieves an unprecedented combination of volume and sensitivity by using narrow-band filters on the new $8192^2$ pixel CCD Mosaic Camera at the 4 meter Mayall telescope of Kitt Peak National Observatory. Well-detected sources with flux and equivalent width matching known high redshift Lyman-$\\alpha$ galaxies have an observed surface density corresponding to $11000 \\pm 700$ per square degree per unit redshift at $z=4.5$. Early spectroscopic followup from the Keck telescope suggests that $\\sim 1/3$ of these are actually at $z\\approx 4.5$, and has confirmed five $z > 4$ Lyman-$\\alpha$ emitters so far. Combining our photometric survey with spectroscopic results, we estimate a net density of $\\sim...

Rhoads, J E; Dey, A; Jannuzi, B T; Stern, D; Spinrad, H; Rhoads, James E.; Malhotra, Sangeeta; Dey, Arjun; Jannuzi, Buell T.; Stern, Daniel

2001-01-01T23:59:59.000Z

14

Lyman-alpha Emission from Structure Formation  

E-Print Network (OSTI)

The nature of the interaction between galaxies and the intergalactic medium (IGM) is one of the most fundamental problems in astrophysics. The accretion of gas onto galaxies provides fuel for star formation, while galactic winds transform the nearby IGM in a number of ways. One exciting technique to study this gas is through the imaging of hydrogen Lyman-alpha emission. We use cosmological simulations to study the Lyman-alpha signals expected from the growth of cosmic structure from z=0-5. We show that if dust absorption is negligible, recombinations following the absorption of stellar ionizing photons dominate the total Lyman-alpha photon production rate. However, galaxies are also surrounded by "Lyman-alpha coronae" of diffuse IGM gas. These coronae are composed of a combination of accreting gas and material ejected from the central galaxy by winds. The Lyman-alpha emission from this phase is powered by a combination of gravitational processes and the photoionizing background. While the former dominates at ...

Furlanetto, S; Springel, V; Hernquist, L; Furlanetto, Steven; Schaye, Joop; Springel, Volker; Hernquist, Lars

2004-01-01T23:59:59.000Z

15

Correlation between the Mean Matter Density and the Width of the Saturated Lyman Alpha Absorption  

E-Print Network (OSTI)

We report a scaling of the mean matter density with the width of the saturated Lyman alpha absorptions. This property is established using the ``pseudo-hydro'' technique (Croft et al. 1998). It provides a constraint for the inversion of the Lyman alpha forest, which encounters difficulty in the saturated region. With a Gaussian density profile and the scaling relation, a simple inversion of the simulated Lyman alpha forests shows that the one-dimensional mass power spectrum is well recovered on scales above 2 Mpc/h, or roughly k small scales, but improvement is possible with a more sophisticated algorithm.

Zhan, H

2003-01-01T23:59:59.000Z

16

Correlation between the Mean Matter Density and the Width of the Saturated Lyman Alpha Absorption  

E-Print Network (OSTI)

We report a scaling of the mean matter density with the width of the saturated Lyman alpha absorptions. This property is established using the ``pseudo-hydro'' technique (Croft et al. 1998). It provides a constraint for the inversion of the Lyman alpha forest, which encounters difficulty in the saturated region. With a Gaussian density profile and the scaling relation, a simple inversion of the simulated Lyman alpha forests shows that the one-dimensional mass power spectrum is well recovered on scales above 2 Mpc/h, or roughly k small scales, but improvement is possible with a more sophisticated algorithm.

Hu Zhan

2003-05-24T23:59:59.000Z

17

Lyman-alpha Emission from Structure Formation  

E-Print Network (OSTI)

The nature of the interaction between galaxies and the intergalactic medium (IGM) is one of the most fundamental problems in astrophysics. The accretion of gas onto galaxies provides fuel for star formation, while galactic winds transform the nearby IGM in a number of ways. One exciting technique to study this gas is through the imaging of hydrogen Lyman-alpha emission. We use cosmological simulations to study the Lyman-alpha signals expected from the growth of cosmic structure from z=0-5. We show that if dust absorption is negligible, recombinations following the absorption of stellar ionizing photons dominate the total Lyman-alpha photon production rate. However, galaxies are also surrounded by "Lyman-alpha coronae" of diffuse IGM gas. These coronae are composed of a combination of accreting gas and material ejected from the central galaxy by winds. The Lyman-alpha emission from this phase is powered by a combination of gravitational processes and the photoionizing background. While the former dominates at z~0, collisional excitation following photo-heating may well dominate the total emission at higher redshifts. The central regions of these systems are dense enough to shield themselves from the metagalactic ionizing background; unfortunately, in this regime our simulations are no longer reliable. We therefore consider several scenarios for the emission from the central cores, including one in which self-shielded gas does not emit at all. We show that the combination of star formation and cooling IGM gas can explain most of the observed "Lyman-alpha blobs" at z~3, with the important exception of the largest sources. On the other hand, except under the most optimistic assumptions, cooling IGM gas cannot explain the observations on its own.

Steven Furlanetto; Joop Schaye; Volker Springel; Lars Hernquist

2004-09-29T23:59:59.000Z

18

LyMAS: Predicting Large-Scale Lyman-alpha Forest Statistics from the Dark Matter Density Field  

E-Print Network (OSTI)

[abridged] We describe LyMAS (Ly-alpha Mass Association Scheme), a method of predicting clustering statistics in the Ly-alpha forest on large scales from moderate resolution simulations of the dark matter distribution, with calibration from high-resolution hydrodynamic simulations of smaller volumes. We use the "Horizon MareNostrum" simulation, a 50 Mpc/h comoving volume evolved with the adaptive mesh hydrodynamic code RAMSES, to compute the conditional probability distribution P(F_s|delta_s) of the transmitted flux F_s, smoothed (1-dimensionally) over the spectral resolution scale, on the dark matter density contrast delta_s, smoothed (3-dimensionally) over a similar scale. In this study we adopt the spectral resolution of the SDSS-III BOSS at z=2.5, and we find optimal results for a dark matter smoothing length sigma=0.3 Mpc/h (comoving). In extended form, LyMAS exactly reproduces both the 1-dimensional power spectrum and 1-point flux distribution of the hydro simulation spectra. Applied to the MareNostrum ...

Peirani, Sébastien; Colombi, Stéphane; Blaizot, Jérémy; Dubois, Yohan; Pichon, Christophe

2013-01-01T23:59:59.000Z

19

Temperature Sensitivity of Lyman-Alpha Hygrometers  

Science Conference Proceedings (OSTI)

The response of an E.R.C. Lyman-alpha hygrometer to humidity and temperature variations has been experimentally determined in a humidity calibration tunnel. The data are compared to a simple two-gas/two-line model to determine the errors made in ...

P. Mestayer; C. Rebattet

1985-12-01T23:59:59.000Z

20

Lyman Alpha Flux Power Spectrum and Its Covariance  

E-Print Network (OSTI)

We analyze the flux power spectrum and its covariance using simulated Lyman alpha forests. We find that pseudo-hydro techniques are good approximations of hydrodynamical simulations at high redshift. However, the pseudo-hydro techniques fail at low redshift because they are insufficient for characterizing some components of the low-redshift intergalactic medium, notably the warm-hot intergalactic medium. Hence, to use the low-redshift Lyman alpha flux power spectrum to constrain cosmology, one would need realistic hydrodynamical simulations. By comparing one-dimensional mass statistics with flux statistics, we show that the nonlinear transform between density and flux quenches the fluctuations so that the flux power spectrum is much less sensitive to cosmological parameters than the one-dimensional mass power spectrum. The covariance of the flux power spectrum is nearly Gaussian. As such, the uncertainties of the underlying mass power spectrum could still be large, even though the flux power spectrum can be p...

Zhan, H; Eisenstein, D J; Katz, N; Zhan, Hu; Dave, Romeel; Eisenstein, Daniel; Katz, Neal

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

The Linear Theory Power Spectrum from the Lyman-alpha Forest in the Sloan Digital Sky Survey  

E-Print Network (OSTI)

We analyze the SDSS Ly-alpha forest P_F(k,z) measurement to determine the linear theory power spectrum. Our analysis is based on fully hydrodynamic simulations, extended using hydro-PM simulations. We account for the effect of absorbers with damping wings, which leads to an increase in the slope of the linear power spectrum. We break the degeneracy between the mean level of absorption and the linear power spectrum without significant use of external constraints. We infer linear theory power spectrum amplitude Delta^2_L(k_p=0.009s/km,z_p=3.0)=0.452_{-0.057-0.116}^{+0.069+0.141} and slope n_eff=-2.321_{-0.047-0.102}^{+0.055+0.131} (possible systematic errors are included through nuisance parameters in the fit - a factor >~5 smaller errors would be obtained on both parameters if we ignored modeling uncertainties). The errors are correlated and not perfectly Gaussian, so we provide a chi^2 table to accurately describe the results. The result corresponds to sigma_8=0.85, n=0.94, for a LCDM model with Omega_m=0.3, Omega_b=0.04, and h=0.7, but is most useful in a combined fit with the CMB. The inferred curvature of the linear power spectrum and the evolution of its amplitude and slope with redshift are consistent with expectations for LCDM models, with the evolution of the slope, in particular, being tightly constrained. We use this information to constrain systematic contamination, e.g., fluctuations in the UV background. This paper should serve as a starting point for more work to refine the analysis, including technical improvements such as increasing the size and number of the hydrodynamic simulations, and improvements in the treatment of the various forms of feedback from galaxies and quasars.

P. McDonald; U. Seljak; R. Cen; D. Shih; D. H. Weinberg; S. Burles; D. P. Schneider; D. J. Schlegel; N. A. Bahcall; J. W. Briggs; J. Brinkmann; M. Fukugita; Z. Ivezic; S. Kent; D. E. Vanden Berk

2004-07-19T23:59:59.000Z

22

Lyman Alpha Flux Power Spectrum and Its Covariance  

E-Print Network (OSTI)

We analyze the flux power spectrum and its covariance using simulated Lyman alpha forests. We find that pseudo-hydro techniques are good approximations of hydrodynamical simulations at high redshift. However, the pseudo-hydro techniques fail at low redshift because they are insufficient for characterizing some components of the low-redshift intergalactic medium, notably the warm-hot intergalactic medium. Hence, to use the low-redshift Lyman alpha flux power spectrum to constrain cosmology, one would need realistic hydrodynamical simulations. By comparing one-dimensional mass statistics with flux statistics, we show that the nonlinear transform between density and flux quenches the fluctuations so that the flux power spectrum is much less sensitive to cosmological parameters than the one-dimensional mass power spectrum. The covariance of the flux power spectrum is nearly Gaussian. As such, the uncertainties of the underlying mass power spectrum could still be large, even though the flux power spectrum can be precisely determined from a small number of lines of sight.

Hu Zhan; Romeel Dave; Daniel Eisenstein; Neal Katz

2005-04-19T23:59:59.000Z

23

On the Lyman-alpha and Lyman-beta lines in solar coronal streamers  

E-Print Network (OSTI)

We investigate the formation of the H I Lyman-alpha and Lyman-beta lines in an equatorial coronal streamer. Particular attention is paid to frequency redistribution for the scattering of the incident radiation. The properties of the spectral lines are studied. The coronal model is given by a global 2.5-D three fluid solar wind model with alpha particles. The emergent intensities and line profiles are calculated from the solution of the statistical equilibrium and radiative transfer equations for an hydrogen atom with 11 energy levels under non local thermodynamic equilibrium. The formation of the lines results from radiative excitation, collisional excitation, and takes into account the coupling with all other transitions between the hydrogen energy levels. We present new estimates of the radiative and collisional contributions of the Lyman line intensities within the streamer. It is also shown that within the streamer, the full width at half-maximum (FWHM) of the Lyman-beta line is a better indicator of the plasma temperature than that of Lyman-alpha. These results show that care should be taken when inferring the proton temperature from the Lyman-alpha line profile as observed in coronal streamers, e.g. by the Ultraviolet Coronagraph Spectrometer or the Solar Ultraviolet Measurements of Emitted Radiation experiments on board the Solar and Heliospheric Observatory.

Nicolas Labrosse; Xing Li; Bo Li

2006-06-05T23:59:59.000Z

24

First Results from the Large Area Lyman Alpha Survey  

E-Print Network (OSTI)

We report on a new survey for z=4.5 Lyman alpha sources, the Large Area Lyman Alpha (LALA) survey. Our survey achieves an unprecedented combination of volume and sensitivity by using narrow-band filters on the new 8192x8192 pixel CCD Mosaic Camera at the 4 meter Mayall telescope of Kitt Peak National Observatory. Well-detected sources with flux and equivalent width matching known high redshift Lyman alpha galaxies (i.e., observed equivalent width above 80 Angstroms and line+continuum flux between 2.6e-17 and 5.2e-17 erg/cm^2/sec in an 80 Angstrom filter) have an observed surface density corresponding to 11000 +- 700 per square degree per unit redshift at z=4.5. Spatial variation in this surface density is apparent on comparison between counts in 6561 and 6730 Angstrom filters. Early spectroscopic followup results from the Keck telescope included three sources meeting our criteria for good Lyman alpha candidates. Of these, one is confirmed as a z=4.52 source, while another remains consistent with either z=4.55 or z=0.81. We infer that 30 to 50% of our good candidates are bona fide Lyman alpha emitters, implying a net density of about 4000 Lyman alpha galaxies per square degree per unit redshift.

James E. Rhoads; Sangeeta Malhotra; Arjun Dey; Daniel Stern; Hyron Spinrad; Buell Jannuzi

2000-03-31T23:59:59.000Z

25

First Results from the Large Area Lyman $\\alpha$ Survey  

E-Print Network (OSTI)

We report on a new survey for z=4.5 Lyman alpha sources, the Large Area Lyman Alpha (LALA) survey. Our survey achieves an unprecedented combination of volume and sensitivity by using narrow-band filters on the new 8192x8192 pixel CCD Mosaic Camera at the 4 meter Mayall telescope of Kitt Peak National Observatory. Well-detected sources with flux and equivalent width matching known high redshift Lyman alpha galaxies (i.e., observed equivalent width above 80 Angstroms and line+continuum flux between 2.6e-17 and 5.2e-17 erg/cm^2/sec in an 80 Angstrom filter) have an observed surface density corresponding to 11000 +- 700 per square degree per unit redshift at z=4.5. Spatial variation in this surface density is apparent on comparison between counts in 6561 and 6730 Angstrom filters. Early spectroscopic followup results from the Keck telescope included three sources meeting our criteria for good Lyman alpha candidates. Of these, one is confirmed as a z=4.52 source, while another remains consistent with either z=4.55...

Rhoads, J E; Dey, A; Stern, D; Spinrad, H; Jannuzi, B; Rhoads, James E.; Malhotra, Sangeeta; Dey, Arjun; Stern, Daniel; Spinrad, Hyron; Jannuzi, Buell

2000-01-01T23:59:59.000Z

26

Lyman-alpha wing absorption in cool white dwarf stars  

E-Print Network (OSTI)

Kowalski & Saumon (2006) identified the missing absorption mechanism in the observed spectra of cool white dwarf stars as the Ly-alpha red wing formed by the collisions between atomic and molecular hydrogen and successfully explained entire spectra of many cool DA-type white dwarfs. Owing to the important astrophysical implications of this issue, we present here an independent assessment of the process. For this purpose, we compute free-free quasi-molecular absorption in Lyman-alpha due to collisions with H and H2 within the one-perturber, quasi-static approximation. Line cross-sections are obtained using theoretical molecular potentials to describe the interaction between the radiating atom and the perturber. The variation of the electric-dipole transition moment with the interparticle distance is also considered. Six and two allowed electric dipole transitions due to H-H and H-H2 collisions, respectively, are taken into account. The new theoretical Lyman-alpha line profiles are then incorporated in our ...

Rohrmann, R D; Kepler, S O

2010-01-01T23:59:59.000Z

27

Abundances at High Redshifts: the Chemical Enrichment History of Damped Lyman-alpha Galaxies  

E-Print Network (OSTI)

Damped Lyman-alpha absorption systems found in the spectra of high redshift quasars are believed to trace the interstellar gas in high redshift galaxies. In this paper, we study the elemental abundances of C, N, O, Al, Si, S, Cr, Mn, Fe, Ni, and Zn in a sample of 14 damped Lyman-alpha systems using high quality echelle spectra of quasars obtained with the 10m Keck telescope. These abundances are combined with similar measurements in the literature in order to investigate the chemical evolution of damped Lyman-alpha galaxies in the redshift range 0.7nature of the star formation process in damped Lyman-alpha galaxies, and the nature of damped Lyman-alpha galaxies themselves.

Limin Lu; Wallace L. W. Sargent; Thomas A. Barlow

1996-06-07T23:59:59.000Z

28

The Effects of Volume Averaging on Spectra Measured with a Lyman-Alpha Hygrometer  

Science Conference Proceedings (OSTI)

Because the Lyman-alpha hygrometer averages turbulent fluctuations in humidity over a right circular cylinder, the spectral response of the instrument degrades at higher wavenumbers. This paper contains a derivation of the three-dimensional ...

Edgar L. Andreas

1981-04-01T23:59:59.000Z

29

Solid-state continuous Lyman-alpha source for laser-cooling of antihydrogen  

SciTech Connect

Cooling antihydrogen atoms is important for future experiments both to test the fundamental CPT symmetry by high-resolution laser spectroscopy and also to measure the gravitational acceleration of antimatter. Laser-cooling of antihydrogen can be done on the strong 1 S-2 P transition at the wavelength of Lyman-alpha (121.6 nm). Ongoing work to set up a solid-state continuous-wave laser source at Lyman-alpha is described.

Walz, Jochen; Beyer, Thomas; Kolbe, Daniel; Markert, Frank; Muellers, Andreas; Scheid, Martin [Institut fuer Physik, Johannes Gutenberg-Universitaet Mainz, Staudinger Weg 7, D-55128 Mainz (Germany)

2008-08-08T23:59:59.000Z

30

Humidity Fluctuations over a Vegetated Surface Measured with a Lyman-Alpha Hygrometer and a Fine-Wire Thermocouple Psychrometer  

Science Conference Proceedings (OSTI)

Simultaneous measurements of humidity fluctuations over a crop made with a specially modified Lyman-alpha hygrometer and a fine-wire thermocouple psychrometer are compared. Standard deviations of the two sets of data are comparable except ...

T. Grayson Redford Jr.; Shashi B. Verma; Norman J. Rosenberg

1980-07-01T23:59:59.000Z

31

Undetected Sources Allow Transmission of the Lyman-alpha Line From Galaxies Prior to Reionization  

E-Print Network (OSTI)

The discovery of Lyman-alpha emission from galaxies at redshifts beyond z~6.5 should not be naively interpreted as implying that the intergalactic medium (IGM) had been reionized at higher redsifts. We show that a cluster of faint undetected sources around each observed galaxy generates an HII region sufficiently large to allow transmission of the galaxy's Lyman-alpha line prior to reionization. We also show that quasars may contribute a significant fraction of the ionizing photons to HII regions around galaxies with a velocity dispersion larger than ~100km/s. These contributing quasars are not usually seen due to the small fraction of time they spend in a luminous phase.

Stuart Wyithe; Abraham Loeb

2004-07-08T23:59:59.000Z

32

The Spectrally Resolved Lyman-alpha Emission of Three Lyman-alpha Selected Field Galaxies at z~2.4 from the HETDEX Pilot Survey  

E-Print Network (OSTI)

We present new results on the spectrally resolved Lyman-alpha (LyA) emission of three LyA emitting field galaxies at z~2.4 with high LyA equivalent width (>100 Angstroms) and LyA luminosity (~10^43 erg/s). At 120 km/s (FWHM) spectral resolution, the prominent double-peaked LyA profile straddles the systemic velocity, where the velocity zero-point is determined from spectroscopy of the galaxies' rest-frame optical nebular emission lines. The average velocity offset from systemic of the stronger redshifted emission component for our sample is 176 km/s while the average total separation between the redshifted and main blueshifted emission components is 380 km/s. These measurements are a factor of ~2 smaller than for UV continuum-selected galaxies that show LyA in emission with lower LyA equivalent width. We compare our LyA spectra to the predicted line profiles of a spherical "expanding shell" LyA radiative transfer grid that models large-scale galaxy outflows. Specifically blueward of the systemic velocity wher...

Chonis, Taylor S; Hill, Gary J; Adams, Joshua J; Finkelstein, Steven L; Gebhardt, Karl; Kollmeier, Juna A; Ciardullo, Robin; Drory, Niv; Gronwall, Caryl; Hagen, Alex; Overzier, Roderik A; Song, Mimi; Zeimann, Gregory R

2013-01-01T23:59:59.000Z

33

Spectral measurements of hydrogen Lyman-alpha in the atmospheres of Venus and Jupiter using a sounding rocket and the Hubble Space Telescope  

E-Print Network (OSTI)

The Lyman-alpha emission is a key signature of the presence of hydrogen, and from this emission many properties of planetary atmospheres can be analyzed. Two projects are studying this emission on two planets for two ...

Corbin, Benjamin Andrew

2011-01-01T23:59:59.000Z

34

Neutral gas in Lyman-alpha emitting galaxies Haro 11 and ESO 338-IG04 measured through sodium absorption  

E-Print Network (OSTI)

Context. The Lyman alpha emission line of galaxies is an important tool for finding galaxies at high redshift, and thus probe the structure of the early universe. However, the resonance nature of the line and its sensitivity to dust and neutral gas is still not fully understood. Aims. We present measurements of the velocity, covering fraction and optical depth of neutral gas in front of two well known local blue compact galaxies that show Lyman alpha in emission: ESO 338-IG 04 and Haro 11. We thus test observationally the hypothesis that Lyman alpha can escape through neutral gas by being Doppler shifted out of resonance. Methods. We present integral field spectroscopy from the GIRAFFE/Argus spectrograph at VLT/FLAMES in Paranal, Chile. The excellent wavelength resolution allows us to accurately measure the velocity of the ionized and neutral gas through the H-alpha emission and Na D absorption, which traces the ionized medium and cold interstellar gas, respectively. We also present independent measurements w...

Sandberg, A; Hayes, M; Fathi, K; Schaerer, D; Mas-Hesse, J M; Rivera-Thorsen, T

2013-01-01T23:59:59.000Z

35

A glance at the host galaxy of high-redshift quasars using strong damped Lyman-alpha systems as coronagraphs  

E-Print Network (OSTI)

We searched quasar spectra from the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS) for the rare occurrences where a strong damped Lyman-alpha absorber (DLA) blocks the Broad Line Region emission from the quasar and acts as a natural coronagraph to reveal narrow Ly\\alpha\\ emission from the host galaxy. We define a statistical sample of 31 DLAs in Data Release 9 (DR9) with log N(HI) > 21.3 cm^-2 located at less than 1500 km s^-1 from the quasar redshift. In 25% (8) of these DLAs, a strong narrow Ly\\alpha\\ emission line is observed with flux ~25 x 10^-17 erg s^-1 cm^-2 on average. For DLAs without this feature in their troughs, the average 3-\\sigma\\ upper limit is 75%) of these DLAs, with only a minority (< 25%) arising from HI clouds located in the AGN host galaxy.

Finley, Hayley; Pâris, Isabelle; Noterdaeme, Pasquier; Brinkmann, Jonathan; Myers, Adam D; Ross, Nicholas P; Schneider, Donald P; Bizyaev, Dmitry; Brewington, Howard; Ebelke, Garrett; Malanushenko, Elena; Malanushenko, Viktor; Oravetz, Daniel; Pan, Kaike; Simmons, Audrey; Snedden, Stephanie

2013-01-01T23:59:59.000Z

36

Isotope effect in the photochemical decomposition of CO{sub 2} (ice) by Lyman-{alpha} radiation  

SciTech Connect

The photochemical decomposition of CO{sub 2}(ice) at 75 K by Lyman-{alpha} radiation (10.2 eV) has been studied using transmission infrared spectroscopy. An isotope effect in the decomposition of the CO{sub 2} molecule in the ice has been discovered, favoring {sup 12}CO{sub 2} photodecomposition over {sup 13}CO{sub 2} by about 10%. The effect is caused by electronic energy transfer from the excited CO{sub 2} molecule to the ice matrix, which favors quenching of the heavier electronically-excited {sup 13}CO{sub 2} molecule over {sup 12}CO{sub 2}. The effect is similar to the Menzel-Gomer-Redhead isotope effect in desorption from adsorbed molecules on surfaces when electronically excited. An enhancement of the rate of formation of lattice-trapped CO and CO{sub 3} species is observed for the photolysis of the {sup 12}CO{sub 2} molecule compared to the {sup 13}CO{sub 2} molecule in the ice. Only 0.5% of the primary photoexcitation results in O-CO bond dissociation to produce trapped-CO and trapped-CO{sub 3} product molecules and the majority of the electronically-excited CO{sub 2} molecules return to the ground state. Here either vibrational relaxation occurs (majority process) or desorption of CO{sub 2} occurs (minority process) from highly vibrationally-excited CO{sub 2} molecules in the ice. The observation of the {sup 12}C/{sup 13}C isotope effect in the Lyman-{alpha} induced photodecomposition of CO{sub 2} (ice) suggests that over astronomical time scales the isotope enrichment effect may distort historical information derived from isotope ratios in space wherever photochemistry can occur.

Yuan Chunqing; Yates, John T. Jr. [Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904 (United States)

2013-04-21T23:59:59.000Z

37

Lyman-alpha Heating of Inhomogeneous High-redshift Intergalactic Medium  

E-Print Network (OSTI)

The intergalactic medium (IGM) prior to the epoch of reionization consists mostly of neutral hydrogen gas. Ly-alpha photons produced by early stars resonantly scatter off hydrogen atoms, causing energy exchange between the radiation field and the gas. This interaction results in moderate heating of the gas due to the recoil of the atoms upon scattering, which is of great interest for future studies of the pre-reionization IGM in the HI 21 cm line. We investigate the effect of this Ly-alpha heating in the IGM with linear density, temperature and velocity perturbations. Perturbations smaller than the diffusion length of photons could be damped due to heat conduction by Ly-alpha photons. The scale at which damping occurs and the strength of this effect depend on various properties of the gas, the flux of Ly-alpha photons and the way in which photon frequencies are redistributed upon scattering. To find the relevant length scale and the extent to which Ly-alpha heating affects perturbations, we calculate the gas ...

Oklopcic, Antonija

2013-01-01T23:59:59.000Z

38

Mechanism and computational model for Lyman-{alpha}-radiation generation by high-intensity-laser four-wave mixing in Kr-Ar gas  

SciTech Connect

We present a theoretical model combined with a computational study of a laser four-wave mixing process under optical discharge in which the non-steady-state four-wave amplitude equations are integrated with the kinetic equations of initial optical discharge and electron avalanche ionization in Kr-Ar gas. The model is validated by earlier experimental data showing strong inhibition of the generation of pulsed, tunable Lyman-{alpha} (Ly-{alpha}) radiation when using sum-difference frequency mixing of 212.6 nm and tunable infrared radiation (820-850 nm). The rigorous computational approach to the problem reveals the possibility and mechanism of strong auto-oscillations in sum-difference resonant Ly-{alpha} generation due to the combined effect of (i) 212.6-nm (2+1)-photon ionization producing initial electrons, followed by (ii) the electron avalanche dominated by 843-nm radiation, and (iii) the final breakdown of the phase matching condition. The model shows that the final efficiency of Ly-{alpha} radiation generation can achieve a value of {approx}5x10{sup -4} which is restricted by the total combined absorption of the fundamental and generated radiation.

Louchev, Oleg A.; Saito, Norihito; Wada, Satoshi [Advanced Science Institute, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198 (Japan); Bakule, Pavel [STFC, ISIS Facility, Rutherford Appleton Laboratory, Chilton, Oxfordshire OX11 0QX (United Kingdom); Yokoyama, Koji [Advanced Science Institute, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198 (Japan); Advanced Meson Science Laboratory, RIKEN Nishina Center, RIKEN, Wako, Saitama 351-0198 (Japan); Ishida, Katsuhiko; Iwasaki, Masahiko [Advanced Meson Science Laboratory, RIKEN Nishina Center, RIKEN, Wako, Saitama 351-0198 (Japan)

2011-09-15T23:59:59.000Z

39

Implications of a non-universal IMF from C, N, and O abundances in very metal-poor Galactic stars and damped Lyman-alpha absorbers  

E-Print Network (OSTI)

Recently revealed C, N, and O abundances in the most metal-poor damped Lyman-alpha (DLA) absorbers are compared with those of extremely metal-poor stars in the Galactic halo, as well as extragalactic H II regions, to decipher nucleosynthesis and chemical enrichment in the early Universe. These comparisons surprisingly identify a relatively high C/O ratio and a low N/O ratio in DLA systems, which is hard to explain theoretically. We propose that if these features are confirmed by future studies, this effect occurs because the initial mass function in metal-poor DLA systems has a cut-off at the upper mass end at around 20-25 Msun, thus lacks the massive stars that provide the nucleosynthesis products leading to the low C/O and high N/O ratios. This finding is a reasonable explanation of the nature of DLA systems in which a sufficient amount of cold H I gas remains intact because of the suppression of ionization by massive stars. In addition, our claim strongly supports a high production rate of N in very massiv...

Tsujimoto, T

2011-01-01T23:59:59.000Z

40

Direct Determination of the Magnetic Quadrupole Contribution to the Lyman-{alpha}{sub 1} Transition in a Hydrogenlike Ion  

Science Conference Proceedings (OSTI)

We report the observation of an interference between the electric dipole (E1) and the magnetic quadrupole (M2) amplitudes for the linear polarization of the Ly-{alpha}{sub 1} (2p{sub 3/2}{yields}1s{sub 1/2}) radiation of hydrogenlike uranium. This multipole mixing arises from the coupling of the ion to different multipole components of the radiation field. Our observation indicates a significant depolarization of the Ly-{alpha}{sub 1} radiation due to the E1-M2 amplitude mixing. It proves that a combined measurement of the linear polarization and of the angular distribution enables a very precise determination of the ratio of the E1 and the M2 transition amplitudes and the corresponding transition rates without any assumptions concerning the population mechanism for the 2p{sub 3/2} state.

Weber, G.; Stoehlker, Th. [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, 64291 Darmstadt (Germany); Physikalisches Institut, Universitaet Heidelberg, 69120 Heidelberg (Germany); Helmholtz-Institut Jena, 07743 Jena (Germany); Braeuning, H.; Hess, S.; Kozhuharov, C.; Spillmann, U. [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, 64291 Darmstadt (Germany); Surzhykov, A.; Maertin, R.; Winters, D. F. A. [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, 64291 Darmstadt (Germany); Physikalisches Institut, Universitaet Heidelberg, 69120 Heidelberg (Germany); Brandau, C. [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, 64291 Darmstadt (Germany); Institut fuer Atom- und Molekuelphysik, Justus-Liebig-Universitaet, 35392 Giessen (Germany); Fritzsche, S. [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, 64291 Darmstadt (Germany); FIAS Frankfurt Institute for Advanced Studies, 60438 Frankfurt am Main (Germany); Department of Physics, University of Oulu, 90014 Oulu (Finland); Geyer, S. [Institut fuer Angewandte Physik, Universitaet Frankfurt, 60438 Frankfurt am Main (Germany); Hagmann, S. [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, 64291 Darmstadt (Germany); Institut fuer Kernphysik, Universitaet Frankfurt, 60438 Frankfurt am Main (Germany); Petridis, N. [Institut fuer Kernphysik, Universitaet Frankfurt, 60438 Frankfurt am Main (Germany); Reuschl, R. [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, 64291 Darmstadt (Germany); FIAS Frankfurt Institute for Advanced Studies, 60438 Frankfurt am Main (Germany); ExtreMe Matter Institute EMMI, 64291 Darmstadt (Germany); Trotsenko, S. [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, 64291 Darmstadt (Germany); Helmholtz-Institut Jena, 07743 Jena (Germany)

2010-12-10T23:59:59.000Z

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Inferring the dark matter power spectrum from the Lyman-alpha forest in high-resolution QSO absorption spectra  

E-Print Network (OSTI)

We use the LUQAS sample (Kim et al. 2004), a set of 27 high-resolution and high signal-to-noise QSO absorption spectra at a median redshift of z=2.25, and the data from Croft et al. (2002) at a median redshift of z=2.72, together with a large suite of high-resolution large box-size hydro-dynamical simulations, to estimate the linear dark matter power spectrum on scales 0.003 s/km power spectrum at z=2.72 also agrees with that inferred from LUQAS at lower redshift if we assume that the increase of the amplitude is due to gravitational growth between these redshifts. We further argue that the smaller mean optical depth measured from high-resolution spectra is more accurate than the larger value obtained from low-resolution spectra by Press et al. (1993) which Croft et al. used. For the smaller optical depth we...

Viel, M; Springel, V

2004-01-01T23:59:59.000Z

42

Cosmological constraints from the CMB and Ly-alpha forest revisited  

E-Print Network (OSTI)

The WMAP team has recently highlighted the usefulness of combining the Ly-alpha forest constraints with those from the cosmic microwave background (CMB). This combination is particularly powerful as a probe of the primordial shape of the power spectrum. Converting between the Ly-alpha forest observations and the linear mass power spectrum requires a careful treatment of nuisance parameters and modeling with cosmological simulations. We point out several issues which lead to an expansion of the errors, the two most important being the range of cosmological parameters explored in simulations and the treatment of the mean transmitted flux constraints. We employ a likelihood calculator for the current Ly-alpha data set based on an extensive 6-dimensional grid of simulations. We show that the current uncertainties in the mean transmission and the flux power spectrum define a degeneracy line in the amplitude-slope plane. The CMB degeneracy due to the primordial power spectrum shape follows a similar relation in this plane. This weakens the statistical significance of the primordial power spectrum shape constraints based on combined CMB+Ly-alpha forest analysis. Using the current data the simplest n=1 scale invariant model with dn/dln k=0 and no tensors has a Delta chi^2=4 compared to the best fitting model in which these 3 parameters are free. Current data therefore do not require relaxing these parameters to improve the fit.

Uros Seljak; Patrick McDonald; Alexey Makarov

2003-02-27T23:59:59.000Z

43

Cosmological constraints from the CMB and Ly-alpha forest revisited  

E-Print Network (OSTI)

The WMAP team has recently highlighted the usefulness of combining the Ly-alpha forest constraints with those from the cosmic microwave background. This combination is particularly powerful as a probe of the primordial shape of the power spectrum. Converting between the Ly-alpha forest observations and the linear mass power spectrum requires a careful treatment of nuisance parameters and modeling with cosmological simulations. We point out several errors and inconsistencies in the previous treatments that propagate into the estimations and associated errors of cosmological parameters, including those reported by the WMAP team. The two most important are the insufficient range of cosmological parameters explored in simulations used to date and an incorrect treatment of the mean transmitted flux constraints. We employ a likelihood calculator for the current data set based on an extensive 6-dimensional grid of simulations. We show that the current uncertainties in the mean transmission and the flux power spectru...

Seljak, U; Makarov, A; Seljak, Uros; Donald, Patrick Mc; Makarov, Alexey

2003-01-01T23:59:59.000Z

44

THRESHOLD PROBABILITY FUNCTIONS AND THERMAL INHOMOGENEITIES IN THE Ly{alpha} FOREST  

SciTech Connect

We introduce to astrophysics the threshold probability functions S{sub 2}, C{sub 2}, and D{sub 2} first derived by Torquato et al., which effectively samples the flux probability distribution function (PDF) of the Ly{alpha} forest at different spatial scales. These statistics are tested on mock Ly{alpha} forest spectra based on various toy models for He II reionization, with homogeneous models with various temperature-density relations as well as models with temperature inhomogeneities. These mock samples have systematics and noise added to simulate the latest Sloan Digital Sky Survey Data Release 7 (SDSS DR7) data. We find that the flux PDF from SDSS DR7 can be used to constrain the temperature-density relation {gamma} (where T{proportional_to}(1 + {Delta}){sup {gamma}-1}) of the intergalactic medium (IGM) at z = 2.5 to a precision of {Delta}{gamma} = 0.2 at {approx}4{sigma} confidence. The flux PDF is degenerate to temperature inhomogeneities in the IGM arising from He II reionization, but we find S{sub 2} can detect these inhomogeneities at {approx}3{sigma}, with the assumption that the flux continuum of the Ly{alpha} forest can be determined to 9% accuracy, approximately the error from current fitting methods. If the flux continuum can be determined to 3% accuracy, then S{sub 2} is capable of constraining the characteristic scale of temperature inhomogeneities, with {approx}4{sigma} differentiation between toy models with hot bubble radii of 50 h{sup -1} Mpc and 25 h{sup -1} Mpc.

Lee, Khee-Gan; Spergel, David N., E-mail: lee@astro.princeton.edu, E-mail: dns@astro.princeton.edu [Department of Astrophysical Science, Princeton University, Princeton, NJ 08544 (United States)

2011-06-10T23:59:59.000Z

45

SYSTEMATIC CONTINUUM ERRORS IN THE Ly{alpha} FOREST AND THE MEASURED TEMPERATURE-DENSITY RELATION  

Science Conference Proceedings (OSTI)

Continuum fitting uncertainties are a major source of error in estimates of the temperature-density relation (usually parameterized as a power-law, T {proportional_to} {Delta}{sup {gamma}-1}) of the intergalactic medium through the flux probability distribution function (PDF) of the Ly{alpha} forest. Using a simple order-of-magnitude calculation, we show that few percent-level systematic errors in the placement of the quasar continuum due to, e.g., a uniform low-absorption Gunn-Peterson component could lead to errors in {gamma} of the order of unity. This is quantified further using a simple semi-analytic model of the Ly{alpha} forest flux PDF. We find that under(over)estimates in the continuum level can lead to a lower (higher) measured value of {gamma}. By fitting models to mock data realizations generated with current observational errors, we find that continuum errors can cause a systematic bias in the estimated temperature-density relation of ({delta}({gamma})) Almost-Equal-To -0.1, while the error is increased to {sigma}{sub {gamma}} Almost-Equal-To 0.2 compared to {sigma}{sub {gamma}} Almost-Equal-To 0.1 in the absence of continuum errors.

Lee, Khee-Gan, E-mail: lee@astro.princeton.edu [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)

2012-07-10T23:59:59.000Z

46

NIST Lyman-Alpha Neutron Detector (LAND)  

Science Conference Proceedings (OSTI)

... the addition of noble gas buffer gases has been ... is replaced with a noble gas, for example ... programs for non-proliferation purposes - oil-well logging ...

2012-11-16T23:59:59.000Z

47

Lyman Alpha Absorption and Tidal Debris  

E-Print Network (OSTI)

The origin and evolution of structure in the Universe is one of the major questions occupying astronomers today. An understanding of the Lyalpha absorbers seen in QSO spectra is an important part of this program since such absorbers can be traced back to very high redshifts. Their mere existence places constraints on the physical state of the intergalactic medium. The discovery of Lyalpha absorbers at low redshift allows us to estimate for the first time what fraction of low redshift Lyalpha absorbers are (i) randomly distributed, (ii) distributed like galaxies but not physically associated with luminous objects, (iii) actually part of the halos of luminous galaxies, or (iv) tidal tails within galaxy groups. Results from the sightline to the QSO 3C273 suggest that the majority of the absorbers are not associated with galaxies, but that there is a significant subset that are. The absorbers associated with galaxies may be produced in enormous gaseous disks surrounding normal spiral galaxies, or may be tidal material bound up in small groups of galaxies

Simon L. Morris

1994-09-29T23:59:59.000Z

48

Lyman, Utah: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon Lyman, Utah: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates...

49

Baryon Acoustic Oscillations in the Ly-\\alpha\\ forest of BOSS quasars  

E-Print Network (OSTI)

We report a detection of the baryon acoustic oscillation (BAO) feature in the three-dimensional correlation function of the transmitted flux fraction in the \\Lya forest of high-redshift quasars. The study uses 48,640 quasars in the redshift range $2.1\\le z \\le 3.5$ from the Baryon Oscillation Spectroscopic Survey (BOSS) of the third generation of the Sloan Digital Sky Survey (SDSS-III). At a mean redshift $z=2.3$, we measure the monopole and quadrupole components of the correlation function for separations in the range $20\\hMpc

Busca, Nicolás G; Rich, James; Bailey, Stephen; Font-Ribera, Andreu; Kirkby, David; Goff, J -M Le; Pieri, Matthew M; Slosar, Anze; Aubourg, Éric; Bautista, Julian E; Bizyaev, Dmitry; Blomqvist, Michael; Bolton, Adam S; Bovy, Jo; Brewington, Howard; Borde, Arnaud; Brinkmann, J; Carithers, Bill; Croft, Rupert A C; Dawson, Kyle S; Ebelke, Garrett; Eisenstein, Daniel J; Hamilton, Jean-Christophe; Ho, Shirley; Hogg, David W; Honscheid, Klaus; Lee, Khee-Gan; Lundgren, Britt; Malanushenko, Elena; Malanushenko, Viktor; Margala, Daniel; Maraston, Claudia; Mehta, Kushal; Miralda-Escudé, Jordi; Myers, Adam D; Nichol, Robert C; Noterdaeme, Pasquier; Olmstead, Matthew D; Oravetz, Daniel; Palanque-Delabrouille, Nathalie; Pan, Kaike; Pâris, Isabelle; Percival, Will J; Petitjean, Patrick; Roe, N A; Rollinde, Emmanuel; Ross, Nicholas P; Rossi, Graziano; Schlegel, David J; Schneider, Donald P; Shelden, Alaina; Sheldon, Erin S; Simmons, Audrey; Snedden, Stephanie; Tinker, Jeremy L; Viel, Matteo; Weaver, Benjamin A; Weinberg, David H; White, Martin; Yèche, Christophe; York, Donald G; Zhao, Gong-Bo

2012-01-01T23:59:59.000Z

50

Oxygen Sensitivity of Krypton and Lyman-? Hygrometers  

Science Conference Proceedings (OSTI)

The oxygen sensitivity of krypton and Lyman-? hygrometers is studied. Using a dewpoint generator and a controlled nitrogen/oxygen flow the extinction coefficients of five hygrometers associated with the third-order Taylor expansion of the Lambert–...

Arjan van Dijk; Wim Kohsiek; Henk A. R. de Bruin

2003-01-01T23:59:59.000Z

51

Star Formation and Chemical Evolution of Lyman-Break Galaxies  

E-Print Network (OSTI)

The number density and clustering properties of Lyman-break galaxies (LBGs) observed at redshift $z\\sim 3$ are best explained by assuming that they are associated with the most massive haloes at $z\\sim 3$ predicted in hierarchical models of structure formation. In this paper we study, under the same assumption, how star formation and chemical enrichment may have proceeded in the LBG population. A consistent model, in which the amount of cold gas available for star formation must be regulated, is suggested. It is found that gas cooling in dark haloes provides a natural regulation process. In this model, the star formation rate in an LBG host halo is roughly constant over about 1 Gyr. The predicted star formation rates and effective radii are consistent with observations. The metallicity of the gas associated with an LBG is roughly equal to the chemical yield, or about the order of $1 Z_{\\odot}$ for a Salpeter IMF. The contribution to the total metals of LBGs is roughly consistent with that obtained from the observed cosmic star formation history. The model predicts a marked radial metallicity gradient in a galaxy, with the gas in the outer region having much lower metallicity. As a result, the metallicities for the damped Lyman-alpha absorption systems expected from the LBG population are low. Since LBG halos are filled with hot gas in this model, their contributions to the soft X-ray background and to the UV ionization background are calculated and discussed.

Chenggang Shu

2000-02-21T23:59:59.000Z

52

Star formation in damped Lyman-alpha systems and the outskirts of Lyman break galaxies  

E-Print Network (OSTI)

Astrophysical Journal, 592, 935 Grenier, S. , Gomez, A. E. ,Vacca et al. , 1996; Grenier et al. , 1985; Blackwell &

Rafelski, Marc Alexander

2011-01-01T23:59:59.000Z

53

Star formation in damped Lyman-alpha systems and the outskirts of Lyman break galaxies  

E-Print Network (OSTI)

J. , Boroski, W. N. , Brewington, H. J. , Brinchmann, J. ,N. , Bramich, D. M. , Brewington, H. J. , Brinchmann, J. ,

Rafelski, Marc Alexander

2011-01-01T23:59:59.000Z

54

Studying galaxy formation through Lyman alpha in emission and absorption  

E-Print Network (OSTI)

, Facebook, Mitchell and Webb, Lucky Star Chinese Restaurant, Rob Brydon, CUARLFC, and everything else that made my time in Cambridge wonderful. And finally to God, for a wonderful Universe . . .when I run, I feel His pleasure — Eric Liddell. Luke Andrew... , Facebook, Mitchell and Webb, Lucky Star Chinese Restaurant, Rob Brydon, CUARLFC, and everything else that made my time in Cambridge wonderful. And finally to God, for a wonderful Universe . . .when I run, I feel His pleasure — Eric Liddell. Luke Andrew...

Barnes, Luke Andrew

2010-01-12T23:59:59.000Z

55

Lyman $?$ Absorption as a Sensitive Probe of the H I Column in Cooling Flows  

E-Print Network (OSTI)

X-ray spectra of a significant fraction of cooling flow (CF) clusters of galaxies indicate the presence of a large column of ``cold'' absorbing gas. The physical nature of the absorbing medium remains a mystery. Searches for H I absorption using the 21 cm hyperfine structure line yielded null results in most cases. The purpose of this contribution is to point out that the Lyman $\\alpha$ absorption cross section is ~10^7 times larger than for the 21 cm line, it can therefore be used as a very sensitive probe of the H I column in clusters, and can thus place stringent constraints on the nature of the X-ray absorber. This method is applied to the Perseus CF cluster where a medium resolution (~250 km/s) UV spectrum is available. The upper limit on the H I column obtained using Lyman $\\alpha$ is at least ~50 times smaller than the 21 cm detection, and ~5,000 smaller than implied by X-ray spectra, indicating that the X-ray absorber is exceedingly devoid of H I. Higher resolution UV spectra with HST may improve the H I column limits by an additional factor of ~4,000. This method can be applied to strongly constrain the nature of the X-ray absorbing medium in a significant fraction of CF clusters .

Ari Laor

1996-09-24T23:59:59.000Z

56

Lyman Continuum Escape from Inhomogeneous ISM  

E-Print Network (OSTI)

We have studied the effects of gas density inhomogeneities on the escape of ionising Lyman continuum (Lyc) photons from Milky Way-type galaxies via 3D numerical simulations using the Monte Carlo radiative transfer code CRASH (Ciardi et al. 2001). To this aim a comparison between a smooth Gaussian distribution (GDD) and an inhomogeneous, fractal one (FDD) has been made with realistic assumptions for the ionising stellar sources based on available data in the solar neighborhood. In both cases the escape fraction f_esc increases with ionisation rate N_gamma (although for the FDD with a flatter slope) and they become equal at N_gamma = 2*10^50 s^-1 where f_esc = 0.11. FDD allows escape fractions of the same order also at lower N_gamma, when Lyc photon escape is sharply suppressed by GDD. Values of the escape fraction as high as 0.6 can be reached (GDD) for N_gamma ~ 9*10^50 s^-1, corresponding to a star formation rate (SFR) of roughly 2 M_o yr^-1; at this ionising luminosity the FDD is less transparent (f_esc ~ 0.28). If high redshift galaxies have gas column densities similar to local ones, are characterized by such high SFRs and by a predominantly smooth (i.e.turbulence free) interstellar medium, our results suggest that they should considerably contribute to - and possibly dominate - the cosmic UV background.

B. Ciardi; S. Bianchi; A. Ferrara

2001-11-28T23:59:59.000Z

57

Lyman Continuum Escape from Inhomogeneous ISM  

E-Print Network (OSTI)

We have studied the effects of gas density inhomogeneities on the escape of ionising Lyman continuum (Lyc) photons from Milky Way-type galaxies via 3D numerical simulations using the Monte Carlo radiative transfer code CRASH (Ciardi et al. 2001). To this aim a comparison between a smooth Gaussian distribution (GDD) and an inhomogeneous, fractal one (FDD) has been made with realistic assumptions for the ionising stellar sources based on available data in the solar neighborhood. In both cases the escape fraction f_esc increases with ionisation rate N_gamma (although for the FDD with a flatter slope) and they become equal at N_gamma = 2*10^50 s^-1 where f_esc = 0.11. FDD allows escape fractions of the same order also at lower N_gamma, when Lyc photon escape is sharply suppressed by GDD. Values of the escape fraction as high as 0.6 can be reached (GDD) for N_gamma ~ 9*10^50 s^-1, corresponding to a star formation rate (SFR) of roughly 2 M_o yr^-1; at this ionising luminosity the FDD is less transparent (f_esc ~ 0...

Ciardi, B; Ferrara, A

2002-01-01T23:59:59.000Z

58

The Deepest Spectrum of the Universe? Constraints on the Lyman Continuum Background at High Redshift  

E-Print Network (OSTI)

We describe an ongoing experiment to search for the meta-galactic Lyman-continuum background at z~2-3. We are obtaining one of the deepest optical spectra ever, using LRIS/Keck-II to search for the fluorescent Ly-alpha emission from optically thick HI clouds. The null results of our pilot study (Bunker, Marleau & Graham 1998) placed a 3-sigma upper bound on the mean intensity of the ionizing background of J_{nu 0} radiation field. We have recently greatly extended our search, obtaining a 16-hour spectrum which is sensitive to UV background fluxes ~1E-21 erg/s/cm^2/Hz/sr (z~2.3 at 3-sigma, assuming the HI clouds are ~10arcsec in extent). We describe how the results of this study can be used to constrain the quasar luminosity function and the contribution of high-redshift star-forming galaxies to the ambient ionizing background.

Andrew J. Bunker; Francine R. Marleau; James R. Graham

1999-12-31T23:59:59.000Z

59

The Deepest Spectrum of the Universe? Constraints on the Lyman Continuum Background at High Redshift  

E-Print Network (OSTI)

We describe an ongoing experiment to search for the meta-galactic Lyman-continuum background at z~2-3. We are obtaining one of the deepest optical spectra ever, using LRIS/Keck-II to search for the fluorescent Ly-alpha emission from optically thick HI clouds. The null results of our pilot study (Bunker, Marleau & Graham 1998) placed a 3-sigma upper bound on the mean intensity of the ionizing background of J_{nu 0} radiation field. We have recently greatly extended our search, obtaining a 16-hour spectrum which is sensitive to UV background fluxes ~1E-21 erg/s/cm^2/Hz/sr (z~2.3 at 3-sigma, assuming the HI clouds are ~10arcsec in extent). We describe how the results of this study can be used to constrain the quasar luminosity function and the contribution of...

Bunker, A J; Graham, J R; Bunker, Andrew J.; Marleau, Francine R.; Graham, James R.

1999-01-01T23:59:59.000Z

60

Village of Lyman, Nebraska (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

Lyman Lyman Place Nebraska Utility Id 11346 Utility Location Yes Ownership M NERC Location MRO NERC SPP Yes NERC WECC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png No rate schedules available. Average Rates Residential: $0.0923/kWh Commercial: $0.1380/kWh Industrial: $0.1630/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=Village_of_Lyman,_Nebraska_(Utility_Company)&oldid=412028" Categories: EIA Utility Companies and Aliases Utility Companies

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61

Incorporating Single-nucleotide Polymorphisms Into the Lyman Model to Improve Prediction of Radiation Pneumonitis  

SciTech Connect

Purpose: To determine whether single-nucleotide polymorphisms (SNPs) in genes associated with DNA repair, cell cycle, transforming growth factor-{beta}, tumor necrosis factor and receptor, folic acid metabolism, and angiogenesis can significantly improve the fit of the Lyman-Kutcher-Burman (LKB) normal-tissue complication probability (NTCP) model of radiation pneumonitis (RP) risk among patients with non-small cell lung cancer (NSCLC). Methods and Materials: Sixteen SNPs from 10 different genes (XRCC1, XRCC3, APEX1, MDM2, TGF{beta}, TNF{alpha}, TNFR, MTHFR, MTRR, and VEGF) were genotyped in 141 NSCLC patients treated with definitive radiation therapy, with or without chemotherapy. The LKB model was used to estimate the risk of severe (grade {>=}3) RP as a function of mean lung dose (MLD), with SNPs and patient smoking status incorporated into the model as dose-modifying factors. Multivariate analyses were performed by adding significant factors to the MLD model in a forward stepwise procedure, with significance assessed using the likelihood-ratio test. Bootstrap analyses were used to assess the reproducibility of results under variations in the data. Results: Five SNPs were selected for inclusion in the multivariate NTCP model based on MLD alone. SNPs associated with an increased risk of severe RP were in genes for TGF{beta}, VEGF, TNF{alpha}, XRCC1 and APEX1. With smoking status included in the multivariate model, the SNPs significantly associated with increased risk of RP were in genes for TGF{beta}, VEGF, and XRCC3. Bootstrap analyses selected a median of 4 SNPs per model fit, with the 6 genes listed above selected most often. Conclusions: This study provides evidence that SNPs can significantly improve the predictive ability of the Lyman MLD model. With a small number of SNPs, it was possible to distinguish cohorts with >50% risk vs <10% risk of RP when they were exposed to high MLDs.

Tucker, Susan L., E-mail: sltucker@mdanderson.org [Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Li Minghuan [Department of Radiation Oncology, Shandong Cancer Hospital, Jinan, Shandong (China)] [Department of Radiation Oncology, Shandong Cancer Hospital, Jinan, Shandong (China); Xu Ting; Gomez, Daniel [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Yuan Xianglin [Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan (China)] [Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan (China); Yu Jinming [Department of Radiation Oncology, Shandong Cancer Hospital, Jinan, Shandong (China)] [Department of Radiation Oncology, Shandong Cancer Hospital, Jinan, Shandong (China); Liu Zhensheng; Yin Ming; Guan Xiaoxiang; Wang Lie; Wei Qingyi [Department of Epidemiology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Epidemiology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Mohan, Radhe [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Vinogradskiy, Yevgeniy [University of Colorado School of Medicine, Aurora, Colorado (United States)] [University of Colorado School of Medicine, Aurora, Colorado (United States); Martel, Mary [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Liao Zhongxing [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)

2013-01-01T23:59:59.000Z

62

A LYMAN BREAK GALAXY IN THE EPOCH OF REIONIZATION FROM HUBBLE SPACE TELESCOPE GRISM SPECTROSCOPY  

SciTech Connect

We present observations of a luminous galaxy at z = 6.573-the end of the reionization epoch-which has been spectroscopically confirmed twice. The first spectroscopic confirmation comes from slitless Hubble Space Telescope Advanced Camera for Surveys grism spectra from the PEARS survey (Probing Evolution And Reionization Spectroscopically), which show a dramatic continuum break in the spectrum at rest frame 1216 A. The second confirmation is done with Keck + DEIMOS. The continuum is not clearly detected with ground-based spectra, but high wavelength resolution enables the Ly{alpha} emission line profile to be determined. We compare the line profile to composite line profiles at z = 4.5. The Ly{alpha} line profile shows no signature of a damping wing attenuation, confirming that the intergalactic gas is ionized at z = 6.57. Spectra of Lyman breaks at yet higher redshifts will be possible using comparably deep observations with IR-sensitive grisms, even at redshifts where Ly{alpha} is too attenuated by the neutral intergalactic medium to be detectable using traditional spectroscopy from the ground.

Rhoads, James E.; Malhotra, Sangeeta; Cohen, Seth; Zheng Zhenya [School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287 (United States); Stern, Daniel [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States); Dickinson, Mark [National Optical Astronomy Observatory, Tucson, AZ (United States); Pirzkal, Norbert; Grogin, Norman; Koekemoer, Anton; Peth, Michael A. [Space Telescope Science Institute, Baltimore, MD (United States); Spinrad, Hyron [University of California, Berkeley, CA (United States); Reddy, Naveen [University of California, Riverside, CA (United States); Hathi, Nimish [Observatories of the Carnegie Institution of Washington, Pasadena, CA (United States); Budavari, Tamas [Johns Hopkins University, Baltimore, MD (United States); Ferreras, Ignacio [Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT (United Kingdom); Gardner, Jonathan P. [NASA Goddard Space Flight Center, Astrophysics Science Division, Observational Cosmology Laboratory, Code 665, Greenbelt, MD 20771 (United States); Gronwall, Caryl [Department of Astronomy and Astrophysics, and Institute for Gravitation and the Cosmos, The Pennsylvania State University, University Park, PA 16802 (United States); Haiman, Zoltan [Columbia University, New York, NY (United States); Kuemmel, Martin [Universitaets-Sternwarte Muenchen, Scheinerstr. 1, D-81679 Muenchen (Germany); Meurer, Gerhardt, E-mail: James.Rhoads@asu.edu [International Centre for Radio Astronomy Research, University of Western Australia, M468, 35 Stirling Highway, Crawley, WA 6009 (Australia); and others

2013-08-10T23:59:59.000Z

63

Test of a Calibration Device for Airborne Lyman-? Hygrometers  

Science Conference Proceedings (OSTI)

A calibration device was designed to fit over the Lyman-? (LA) probes on the NCAR King Air aircraft to allow the introduction of pure nitrogen, oxygen, and carbon dioxide gases into the probe's radiation path. With these three gases, it was ...

Edwin W. Eloranta; Roland B. Stull; Elizabeth E. Ebert

1989-02-01T23:59:59.000Z

64

Lyman County, South Dakota: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Lyman County, South Dakota: Energy Resources Lyman County, South Dakota: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 43.9016694°, -99.8124935° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.9016694,"lon":-99.8124935,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

65

Glossary Term - Alpha Decay  

NLE Websites -- All DOE Office Websites (Extended Search)

Universe Previous Term (10 Most Abundant Elements in the Universe) Glossary Main Index Next Term (Alpha Particle) Alpha Particle Alpha Decay Alpha Decay Diagram Alpha decay is one...

66

Star Formation and Chemical Evolution of Lyman-Break Galaxies  

E-Print Network (OSTI)

The number density and clustering properties of Lyman-break galaxies (LBGs)observed at redshift $z\\sim 3$ are best explained by assuming that they areassociated with the most massive haloes at $z\\sim 3$ predicted in hierarchicalmodels of structure formation. In this paper we study, under the sameassumption, how star formation and chemical enrichment may have proceeded inthe LBG population. A consistent model, in which the amount of cold gasavailable for star formation must be regulated, is suggested. It is found thatgas cooling in dark haloes provides a natural regulation process. In thismodel, the star formation rate in an LBG host halo is roughly constant overabout 1 Gyr. The predicted star formation rates and effective radii areconsistent with observations. The metallicity of the gas associated with an LBGis roughly equal to the chemical yield, or about the order of $1 Z_{\\odot}$ fora Salpeter IMF. The contribution to the total metals of LBGs is roughlyconsistent with that obtained from the observed cosmic...

Shu, C

2000-01-01T23:59:59.000Z

67

Alpha Radiation  

NLE Websites -- All DOE Office Websites (Extended Search)

Basics of Radiation Basics of Radiation Gamma Radiation and X-Rays Beta Radiation Alpha Radiation Irradiation Radioactive Contamination Definitions Detection Measurement Safety Around Radiation Sources Types of Radiation Exposure Managing Radiation Emergencies Basics of Radiation Characteristics of Alpha Radiation 1. Alpha radiation is not able to penetrate skin. 2. Alpha-emitting materials can be harmful to humans if the materials are inhaled, swallowed, or absorbed through open wounds. 3. A variety of instruments have been designed to measure alpha radiation. Special training in use of these instruments is essential for making accurate measurements. 4. A civil defense instrument (CD V-700) cannot detect the presence of radioactive materials that produce alpha radiation unless the radioactive materials also produce beta and/or gamma radiation.

68

ARM - Black Forest News  

NLE Websites -- All DOE Office Websites (Extended Search)

GermanyBlack Forest News Black Forest Deployment AMF Home Black Forest Home Data Plots and Baseline Instruments CERA COPS Data University of Hohenheim COPS Website COPS Update,...

69

Glossary Term - Alpha Particle  

NLE Websites -- All DOE Office Websites (Extended Search)

Decay Previous Term (Alpha Decay) Glossary Main Index Next Term (Atomic Number) Atomic Number Alpha Particle alphaparticle.gif Produced during alpha decay, an alpha particle is a...

70

Information Forests  

E-Print Network (OSTI)

We describe Information Forests, an approach to classification that generalizes Random Forests by replacing the splitting criterion of non-leaf nodes from a discriminative one -- based on the entropy of the label distribution -- to a generative one -- based on maximizing the information divergence between the class-conditional distributions in the resulting partitions. The basic idea consists of deferring classification until a measure of "classification confidence" is sufficiently high, and instead breaking down the data so as to maximize this measure. In an alternative interpretation, Information Forests attempt to partition the data into subsets that are "as informative as possible" for the purpose of the task, which is to classify the data. Classification confidence, or informative content of the subsets, is quantified by the Information Divergence. Our approach relates to active learning, semi-supervised learning, mixed generative/discriminative learning.

Yi, Zhao; Dewan, Maneesh; Zhan, Yiqiang

2012-01-01T23:59:59.000Z

71

Lyman Maynard Stowe Library 1 of 5 PDA Troubleshooting Shots 2006 Install (Windows Mobile 5)  

E-Print Network (OSTI)

Lyman Maynard Stowe Library 1 of 5 PDA Troubleshooting Shots 2006 Install (Windows Mobile 5) Step 1 Stowe Library 2 of 5 PDA Troubleshooting Shots 2006 Install (Windows Mobile 5) Step 2: Copy The Downloaded Files To Your PDA o Maximize the ActiveSync Window o Click on the Explore button o Drag and drop

Kim, Duck O.

72

Definitive Identification of the Transition between Small- to Large-Scale Clustering for Lyman Break Galaxies  

E-Print Network (OSTI)

We report angular correlation function (ACF) of Lyman Break Galaxies (LBGs) with unprecedented statistical quality on the basis of 16,920 LBGs at z=4 detected in the 1 deg^2 sky of the Subaru/XMM-Newton Deep Field. The ACF significantly departs from a power law, and shows an excess on small scale. Particularly, the ACF of LBGs with i'ACF and number density of LBGs can be explained by the cold dark matter model.

M Ouchi; T. Hamana; K. Shimasaku; T. Yamada; M. Akiyama; N. Kashikawa; M. Yoshida; K. Aoki; M. Iye; T. Saito; T. Sasaki; C. Simpson; M. Yoshida

2005-08-02T23:59:59.000Z

73

Lyman ? Absorption as a Sensitive Probe of the H I Column in Cooling Flows  

E-Print Network (OSTI)

Abstract. X-ray spectra of a significant fraction of cooling flow (CF) clusters of galaxies indicate the presence of large columns of “cold ” absorbing gas. The physical nature of the absorbing medium remains a mystery. Searches for H I absorption using the 21 cm hyperfine structure line yielded null results in most cases. The purpose of this contribution is to point out that the Lyman ? absorption cross section is ? 10 7 times larger than for the 21 cm line, it can therefore be used as a very sensitive probe of the H I column in clusters, and can thus place stringent constraints on the nature of the X-ray absorber. This method is applied to the Perseus CF cluster where a medium resolution ( ? 250 km s ?1) UV spectrum is available. The upper limit on the H I column obtained using Lyman ? is at least ? 50 times smaller than the 21 cm detection, and ? 5,000 smaller than implied by X-ray spectra, indicating that the X-ray absorber is exceedingly devoid of H I. Higher resolution UV spectra with HST may improve the H I column limits by an additional factor of ? 4,000. This method can be applied to strongly constrain the nature of the X-ray absorbing medium in a significant fraction of CF clusters.

A. Laor

1996-01-01T23:59:59.000Z

74

WHAM Observations of H-alpha from High-Velocity Clouds Are They Galactic or Extragalactic?  

E-Print Network (OSTI)

It has been suggested that high velocity clouds may be distributed throughout the Local Group and are therefore not in general associated with the Milky Way galaxy. With the aim of testing this hypothesis, we have made observations in the H-alpha line of high velocity clouds selected as the most likely candidates for being at larger than average distances. We have found H-alpha emission from 4 out of 5 of the observed clouds, suggesting that the clouds under study are being illuminated by a Lyman continuum flux greater than that of the metagalactic ionizing radiation. Therefore, it appears likely that these clouds are in the Galactic halo and not distributed throughout the Local Group.

Tufte, S L; Madsen, G J; Haffner, L M; Reynolds, R J

2002-01-01T23:59:59.000Z

75

WHAM Observations of H-alpha from High-Velocity Clouds: Are They Galactic or Extragalactic?  

E-Print Network (OSTI)

It has been suggested that high velocity clouds may be distributed throughout the Local Group and are therefore not in general associated with the Milky Way galaxy. With the aim of testing this hypothesis, we have made observations in the H-alpha line of high velocity clouds selected as the most likely candidates for being at larger than average distances. We have found H-alpha emission from 4 out of 5 of the observed clouds, suggesting that the clouds under study are being illuminated by a Lyman continuum flux greater than that of the metagalactic ionizing radiation. Therefore, it appears likely that these clouds are in the Galactic halo and not distributed throughout the Local Group.

S. L. Tufte; J. D. Wilson; G. J. Madsen; L. M. Haffner; R. J. Reynolds

2002-06-12T23:59:59.000Z

76

The Health of Colorado's Forests  

E-Print Network (OSTI)

, Fort Collins, Colo., and Aerial Survey Coordinator, Colorado State Forest Service (CSFS. Patricia M. Ciesla, Forest Health Management International, Fort Collins, Colo. Brian Howell, Aerial SurveyThe Health of Colorado's Forests 2009 Report Special Issue: Threats to Colorado's Current

77

The Forest Preserve District  

NLE Websites -- All DOE Office Websites (Extended Search)

Forest Preserve District Forest Preserve District Nature Bulletin No. 109 March 29, 1947 Forest Preserve District of Cook County William N. Erickson, President Roberts Mann, Supt. of Conservation THE FOREST PRESERVE DISTRICT Forest Preserve Districts, in Illinois, are separate municipal bodies governed by a Board of Forest Preserve Commissioners consisting of the elected county commissioners, as in Cook County, or by a committee of the county board of supervisors, as in 7 other counties. The legislative act which provided for such a district, if authorized by referendum vote of the people, became a law on July 1, 1914. Under that act, the commissioners are empowered to levy taxes, issue bonds, and to acquire lands containing forests "for the purpose of protecting and preserving the flora, fauna and scenic beauties.... and to restore, restock, protect and preserve the natural forests and said lands with their flora and fauna, as nearly as may be in their natural state and condition for the purpose of the education, pleasure and recreation of the public". A limit of 35,000 acres was set; later increased to 39,000.

78

WHAM Observations of H$\\alpha$ Emission from High Velocity Clouds in the M, A, and C Complexes  

E-Print Network (OSTI)

The first observations of the recently completed Wisconsin H-Alpha Mapper (WHAM) facility include a study of emission lines from high velocity clouds in the M, A, and C complexes, with most of the observations on the M I cloud. We present results including clear detections of H-alpha emission from all three complexes with intensities ranging from 0.06 R to 0.20 R. In every observed direction where there is significant high velocity H I gas seen in the 21 cm line we have found associated ionized hydrogen emitting the H-alpha line. The velocities of the H-alpha and 21 cm emission are well correlated in every case except one, but the intensities are not correlated. There is some evidence that the ionized gas producing the H-alpha emission envelopes the 21 cm emitting neutral gas but the H-alpha "halo", if present, is not large. If the H-alpha emission arises from the photoionization of the H I clouds, then the implied Lyman continuum flux F_{LC} at the location of the clouds ranges from 1.3 to 4.2 x 10^5 photons...

Tufte, S L; Haffner, L M

1998-01-01T23:59:59.000Z

79

Woodland Park Healthy Forest Initiative  

E-Print Network (OSTI)

whether we could get Colorado Springs to take some of it. The Mayor called the head of the electric plant Healthy Forest Initiative 1 1 Colorado Forest Restoration Institute Collaboration Case Study: Woodland Park Healthy Forest Initiative Corrie Knapp Prepared for the Colorado Forest Restoration Institute

80

PACIFIC SOUTHWEST Forest and Range  

E-Print Network (OSTI)

years with the Forest Survey at the Southeastern Forest Experiment Station, he joined the Aerial Re, and is now a mathe- matical statistician. #12;C lassifying forest stand volumes on single aerial photographs is unique to the na- tionwide Forest Survey 1 -- stratifying volume on photographs is not. In fact, since

Standiford, Richard B.

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Climate change cripples forests  

NLE Websites -- All DOE Office Websites (Extended Search)

Climate Change Cripples Forests Climate Change Cripples Forests Climate change cripples forests A team of scientists concluded that in the warmer and drier Southwest of the near future, widespread tree mortality will cause forest and species distributions to change substantially. October 1, 2012 A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the Southwest United States. Photo courtesy A. Park Williams. A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the Southwest United States. Photo courtesy A. Park Williams. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "There will still be wet winters, but they will more often be followed by warm summers, putting stress on trees and limiting their ability to respond

82

Climate change cripples forests  

NLE Websites -- All DOE Office Websites (Extended Search)

Climate change cripples forests Climate change cripples forests Climate change cripples forests A team of scientists concluded that in the warmer and drier Southwest of the near future, widespread tree mortality will cause forest and species distributions to change substantially. October 1, 2012 A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the Southwest United States. Photo courtesy A. Park Williams. A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the Southwest United States. Photo courtesy A. Park Williams. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "There will still be wet winters, but they will more often be followed by warm summers, putting stress on trees and limiting their ability to respond

83

Climate change cripples forests  

NLE Websites -- All DOE Office Websites (Extended Search)

Climate Change Cripples Forests Climate Change Cripples Forests Climate change cripples forests A team of scientists concluded that in the warmer and drier Southwest of the near future, widespread tree mortality will cause forest and species distributions to change substantially. October 1, 2012 A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the Southwest United States. Photo courtesy A. Park Williams. A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the Southwest United States. Photo courtesy A. Park Williams. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "There will still be wet winters, but they will more often be followed by warm summers, putting stress on trees and limiting their ability to respond

84

Nicholas DeForest  

NLE Websites -- All DOE Office Websites (Extended Search)

Nicholas DeForest Grid Integration Group Microgrids Lawrence Berkeley National Laboratory 1 Cyclotron Road MS 90R1121 Berkeley CA 94720 Office Location: 90-1139 (510) 486-6188...

85

Idaho Panhandle National Forests  

E-Print Network (OSTI)

National Forests. The RNA features vegetation on dry cliffs that are embedded in mid-elevation moist western hemlock/western redcedar/grand fir forests. Immediately below the cliffs is riparian habitat that supports many wetland species, including a disjunct west coast moss, Ulota megalospora, whose first known occurrence in Idaho is in this RNA. This establishment report documents the boundaries of the RNA, the objectives for the RNA, its features, description of

United States; Forest Service; Priest River; Experimental Forest; Dennis E. Ferguson; Arthur C. Zack Ferguson; Dennis E. Zack

2006-01-01T23:59:59.000Z

86

Imaging alpha particle detector  

DOE Patents (OSTI)

A method and apparatus for detecting and imaging alpha particles sources is described. A conducting coated high voltage electrode (1) and a tungsten wire grid (2) constitute a diode configuration discharge generator for electrons dislodged from atoms or molecules located in between these electrodes when struck by alpha particles from a source (3) to be quantitatively or qualitatively analyzed. A thin polyester film window (4) allows the alpha particles to pass into the gas enclosure and the combination of the glass electrode, grid and window is light transparent such that the details of the source which is imaged with high resolution and sensitivity by the sparks produced can be observed visually as well. The source can be viewed directly, electronically counted or integrated over time using photographic methods. A significant increase in sensitivity over other alpha particle detectors is observed, and the device has very low sensitivity to gamma or beta emissions which might otherwise appear as noise on the alpha particle signal.

Anderson, David F. (Los Alamos, NM)

1985-01-01T23:59:59.000Z

87

In Search of the Rain Forest  

E-Print Network (OSTI)

Review: In Search of the Rain Forest By Candace Slater (Candace Slater (Ed. ). In Search of the Rain Forest. Durham:

Hamilton-Smith, Elery

2005-01-01T23:59:59.000Z

88

Forest Preserve Wildlife  

NLE Websites -- All DOE Office Websites (Extended Search)

Forest Preserve Wildlife Forest Preserve Wildlife Nature Bulletin No. 437-A December 11, 1971 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation FOREST PRESERVE WILDLIFE The Forest Preserve District now comprises about 62,512 acres of native landscape, mostly wooded, acquired and held as the statute prescribes: for the purpose of protecting the flora, fauna and scenic beauties in their natural state and condition as nearly as may be. It is a huge wildlife sanctuary wherein no weapon may be carried and no hunting, trapping or molestation of any mammal or bird is permitted. Aside from fish management, the wildlife has been left alone to work out its own systems of checks and balances. There has been no attempt to remove surplus populations; no control of any predator other than wild cats and dogs. None is needed. Dead or hollow trees have been allowed to stand, or lie where they fall, because they furnish homes for many kinds of wildlife and go back into the soil to maintain the health of the woodland. There has been considerable reforestation of open tracts formerly farmed and, in some areas, planting of shrubs and vines which provide food for wildlife.

89

Majoring in Forest Resources & Conservation  

E-Print Network (OSTI)

Majoring in Forest Resources & Conservation University of Florida/IFAS School of Forest Resources & Conservation www.sfrc.ufl.edu ~ 352-846-0847 ~ khaselier@ufl.edu Business Management gives students a sound Management Summer B FOR3200C Foundations in Natural Resources and Conservation 3 credits FOR3434C Forest

Watson, Craig A.

90

Research Report Forests and carbon  

E-Print Network (OSTI)

Research Report Forests and carbon: valuation, discounting and risk management #12;#12;Forests and carbon: valuation, discounting and risk management Gregory Valatin Forestry Commission: Edinburgh-0-85538-815-7 Valatin, G. (2010). Forests and carbon: valuation, discounting and risk management. Forestry Commission

91

Research Report Forests and carbon  

E-Print Network (OSTI)

Research Report Forests and carbon: a review of additionality #12;#12;Forests and carbon: a review. ISBN 978-0-85538-816-4 Valatin, G. (2011). Forests and carbon: a review of additionality. Forestry, baseline, carbon, climate change mitigation, forestry, quality assurance, sequestration. FCRP013/FC

92

1974 FORESTER the world a  

E-Print Network (OSTI)

1974 FORESTER #12;#12;2 TREES make the world a better place in which to live! #12;TABLE OF CONTENTS . .... . .... . . . . . .....63 ADVERTISERS . . .. . . . . . .. ....... ....... .. 75 #12;FORESTER'S SALUTE TO DR. ERIC A. BOUROO. The Forester salutes Dean Bourdo for his accomplishments in advancing forestry at Michigan Tech, as a member

93

Special Issue: High Elevation Forests  

E-Print Network (OSTI)

Resources, Colorado State University William Ciesla, Aerial Survey Coordinator, U.S. Forest Service (retired material for homes. They also capture, purify, and release water for our use. Recent aerial surveys confirmSpecial Issue: High Elevation Forests 2008 The Health of Colorado's Forests Report #12;David A

94

Colorado Statewide Forest Resource Assessment  

E-Print Network (OSTI)

climate and slow-growing forests generally have prevented wood production from becoming a major state such as climate change, renewable energy, intense recreational use, billion dollar fire suppression costs and Implementation of Forest Management in Colorado #12;Acknowledgements The Colorado State Forest Service (CSFS

95

NPP Boreal Forest: Superior National Forest, U.S.A.  

NLE Websites -- All DOE Office Websites (Extended Search)

Superior National Forest, U.S.A., 1983-1984 Superior National Forest, U.S.A., 1983-1984 Data Citation Cite this data set as follows: Hall, F. G. 1997. NPP Boreal Forest: Superior National Forest, U.S.A., 1983-1984. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a boreal forest was determined at 31 spruce and 30 aspen forest stands in the Superior National Forest (SNF) near Ely, Minnesota, U.S.A., in 1983 and 1984 by the National Aeronautics and Space Administration. The purpose of the experiment was to investigate the ability of remote sensing to provide estimates of biophysical properties of ecosystems, such as leaf area index (LAI), biomass and net primary productivity (NPP). These ground-based estimates of above-ground biomass

96

Population and conservation genomics of forest trees: seeing the forest for the trees  

E-Print Network (OSTI)

DB, Kremer A: Forest tree genomics: Growing resources andPopulation and conservation genomics of forest trees: seeingPopulation and conservation genomics of forest trees: seeing

Eckert, Andrew

2011-01-01T23:59:59.000Z

97

WHAM Observations of H-alpha Emission from High Velocity Clouds in the M, A, and C Complexes  

E-Print Network (OSTI)

The first observations of the recently completed Wisconsin H-Alpha Mapper (WHAM) facility include a study of emission lines from high velocity clouds in the M, A, and C complexes, with most of the observations on the M I cloud. We present results including clear detections of H-alpha emission from all three complexes with intensities ranging from 0.06 R to 0.20 R. In every observed direction where there is significant high velocity H I gas seen in the 21 cm line we have found associated ionized hydrogen emitting the H-alpha line. The velocities of the H-alpha and 21 cm emission are well correlated in every case except one, but the intensities are not correlated. There is some evidence that the ionized gas producing the H-alpha emission envelopes the 21 cm emitting neutral gas but the H-alpha "halo", if present, is not large. If the H-alpha emission arises from the photoionization of the H I clouds, then the implied Lyman continuum flux F_{LC} at the location of the clouds ranges from 1.3 to 4.2 x 10^5 photons cm^{-2} s^{-1}. If, on the other hand, the ionization is due to a shock arising from the collision of the high-velocity gas with an ambient medium in the halo, then the density of the pre-shocked gas can be constrained. We have also detected the [S II] 6716 angstrom line from the M I cloud and have evidence that the [S II] to H-alpha ratio varies with location on the cloud.

S. L. Tufte; R. J. Reynolds; L. M. Haffner

1998-07-15T23:59:59.000Z

98

Method of determining forest production from remotely sensed forest parameters  

DOE Patents (OSTI)

A method of determining forest production entirely from remotely sensed data in which remotely sensed multispectral scanner (MSS) data on forest 5 composition is combined with remotely sensed radar imaging data on forest stand biophysical parameters to provide a measure of forest production. A high correlation has been found to exist between the remotely sensed radar imaging data and on site measurements of biophysical 10 parameters such as stand height, diameter at breast height, total tree height, mean area per tree, and timber stand volume.

Corey, J.C.; Mackey, H.E. Jr.

1987-08-31T23:59:59.000Z

99

NPP Boreal Forest: Jädraås, Sweden  

NLE Websites -- All DOE Office Websites (Extended Search)

low water storage capacity. Land use history in the region includes forest grazing, burning for crops and grazing, charcoal burning, tar-burning, logging and felling for paper...

100

Damped Ly-alpha Systems in Semi-Analytic Models: Sensitivity to dynamics, disk properties, and cosmology  

E-Print Network (OSTI)

Previously we have shown that it is possible to account for the kinematic properties of damped Lyman alpha systems (DLAS) in the context of semi-analytic models. In these models, hierarchical structure formation is approximated by constructing a merger tree for each dark matter halo. A natural consequence is that every virialized halo may contain not only a central galaxy, but also a number of satellite galaxies as determined by its merging history. Thus the kinematics of the DLAS arise from the combined effects of the internal rotation of gas disks and the motions between gas disks within a common halo. Here we investigate the sensitivity of this model to some of the assumptions made previously, including the modeling of satellite dynamics, the scale height of the gas, and the cosmology.

Ariyeh H. Maller; Rachel S. Somerville; Jason X. Prochaska; Joel R. Primack

2000-02-24T23:59:59.000Z

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Mosquito Control in the Forest Preserves  

NLE Websites -- All DOE Office Websites (Extended Search)

Control in the Forest Preserves Nature Bulletin No. 454-A April 22, 1972 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of...

102

Long range alpha particle detector  

DOE Patents (OSTI)

An alpha particle detector capable of detecting alpha radiation from distant sources. A high voltage is generated near a conductive mesh while a fan draws air containing air molecules ionized by alpha particles across the mesh. The current in the mesh can be detected and used for measurement or alarm. The detector can be used for area, personnel and equipment monitoring.

Wolf, M.A.; McAdtee, J.L. III; Unruh, W.P.; Cucchiadra, A.L.; Huchton, R.L.

1990-03-13T23:59:59.000Z

103

Majoring in Forest Resources & Conservation  

E-Print Network (OSTI)

Majoring in Forest Resources & Conservation University of Florida/IFAS School of Forest Resources & Conservation www.sfrc.ufl.edu ~ 352-846-0847 ~ khaselier@ufl.edu Protected Areas Management is for students interested in managing lands for conservation and restoration purposes, usually on lands owned

Watson, Craig A.

104

AMF Deployment, Black Forest, Germany  

NLE Websites -- All DOE Office Websites (Extended Search)

Germany Germany Black Forest Deployment AMF Home Black Forest Home Data Plots and Baseline Instruments CERA COPS Data University of Hohenheim COPS Website COPS Update, April 2009 Experiment Planning COPS Proposal Abstract and Related Campaigns Science Plan (PDF, 12.4M) Outreach COPS Backgrounder (PDF, 306K) Posters AMF Poster, German Vesion Researching Raindrops in the Black Forest News Campaign Images AMF Deployment, Black Forest, Germany Main Site: 48° 32' 24.18" N, 08° 23' 48.72" E Altitude: 511.43 meters In March 2007, the third deployment of the ARM Mobile Facility (AMF) will take place in the Black Forest region of Germany, where scientists will study rainfall resulting from atmospheric uplift (convection) in mountainous terrain, otherwise known as orographic precipitation. ARM

105

NPP Tropical Forest: Pasoh, Malaysia  

NLE Websites -- All DOE Office Websites (Extended Search)

Pasoh, Malaysia, 1971-1973 Pasoh, Malaysia, 1971-1973 [PHOTOGRAPH] Photograph: Profile of the Pasoh Forest (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Kira, T., N. Manokaran, and S. Appanah. 1998. NPP Tropical Forest: Pasoh, Malaysia, 1971-1973. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and productivity of a lowland tropical forest in the Pasoh Forest Reserve, Malaysia, were determined from 1971 to 1973, under the auspices of the International Biological Programme. From 1970 to 1978, intensive research on lowland rain forest ecology and dynamics took place under a joint research project between the University of Malaya (UM) and the

106

USDA Forest Products Laboratory | Open Energy Information  

Open Energy Info (EERE)

Forest Products Laboratory Forest Products Laboratory Jump to: navigation, search Name USDA Forest Products Laboratory Place Madison, WI Website http://www.fpl.fs.fed.us/ References USDA Forest Products Laboratory [1] Information About Partnership with NREL Partnership with NREL Yes Partnership Type Test & Evaluation Partner Partnering Center within NREL Electricity Resources & Building Systems Integration LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! USDA Forest Products Laboratory is a company located in Madison, WI. References ↑ "USDA Forest Products Laboratory" Retrieved from "http://en.openei.org/w/index.php?title=USDA_Forest_Products_Laboratory&oldid=381741" Categories: Clean Energy Organizations Companies Organizations

107

Forest Carbon Portal | Open Energy Information  

Open Energy Info (EERE)

Forest Carbon Portal Forest Carbon Portal Jump to: navigation, search Tool Summary Name: Forest Carbon Portal Agency/Company /Organization: United Nations Development Programme, United States Agency for International Development, United Kingdom Department for International Development, Forest Trends Sector: Land Focus Area: Forestry Topics: GHG inventory Resource Type: Lessons learned/best practices Website: www.forestcarbonportal.com/ Forest Carbon Portal Screenshot References: FCP[1] "Ecosystem Marketplace's Forest Carbon Portal is a clearinghouse of information, feature stories, event listings, project details, 'how-to' guides, news, and market analysis on forest-based carbon sequestration projects. Deforestation and land-use change are responsible for 17% of the

108

1CHILE'S FRONTIER FORESTS: CONSERVING A GLOBAL TREASURE FRONTIER FORESTS  

E-Print Network (OSTI)

Claes Hall Aracruz Celulose Sweden Sharon Haines International Paper United States Matti Karjula Stora; The World Bank, World Wildlife Fund; The Nature Conservancy; Aracruz Celulose; Forest and Paper Association

109

COMPLETING THE CENSUS OF Ly{alpha} EMITTERS AT THE REIONIZATION EPOCH  

Science Conference Proceedings (OSTI)

We carried out extended spectroscopic confirmations of Ly{alpha} emitters (LAEs) at z = 6.5 and 5.7 in the Subaru Deep Field. Now, the total number of spectroscopically confirmed LAEs is 45 and 54 at z = 6.5 and 5.7, respectively, and at least 81% (70%) of our photometric candidates at z = 6.5 (5.7) have been spectroscopically identified as real LAEs. We made careful measurements of the Ly{alpha} luminosity, both photometrically and spectroscopically, to accurately determine the Ly{alpha} and rest-UV luminosity functions (LFs). The substantially improved evaluation of the Ly{alpha} LF at z = 6.5 shows an apparent deficit from z = 5.7 at least at the bright end, and a possible decline even at the faint end, though small uncertainties remain. The rest-UV LFs at z = 6.5 and 5.7 are in good agreement, at least at the bright end, in clear contrast to the differences seen in the Ly{alpha} LF. These results imply an increase in the neutral fraction of the intergalactic medium from z = 5.7 to 6.5. The rest-frame equivalent width (EW{sub 0}) distribution at z = 6.5 seems to be systematically smaller than z = 5.7, and it shows an extended tail toward larger EW{sub 0}. The bright end of the rest-UV LF can be reproduced from the observed Ly{alpha} LF and a reasonable EW{sub 0}-UV luminosity relation. Integrating this rest-UV LF provides the first measurement of the contribution of LAEs to the photon budget required for reionization. The derived UV LF suggests that the fractional contribution of LAEs to the photon budget among Lyman break galaxies significantly increases toward faint magnitudes. Low-luminosity LAEs could dominate the ionizing photon budget, though this inference depends strongly on the uncertain faint-end slope of the Ly{alpha} LF.

Kashikawa, Nobunari; Iye, Masanori [Optical and Infrared Astronomy Division, National Astronomical Observatory, Mitaka, Tokyo 181-8588 (Japan); Shimasaku, Kazuhiro; Okamura, Sadanori [Department of Astronomy, University of Tokyo, Hongo, Tokyo 113-0033 (Japan); Matsuda, Yuichi [Department of Physics, Durham University, South Road, Durham DH1 3LE (United Kingdom); Egami, Eiichi; Jiang, Linhua [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Nagao, Tohru; Taniguchi, Yoshiaki; Shioya, Yasuhiro [Research Center for Space and Cosmic Evolution, Ehime University, Bunkyo-cho, Matsuyama 790-8577 (Japan); Ouchi, Masami; Ota, Kazuaki [Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa City, Chiba 77-8582 (Japan); Malkan, Matthew A. [Department of Physics and Astronomy, University of California, Los Angeles, CA 90095-1547 (United States); Hattori, Takashi [Subaru Telescope, National Astronomical Observatory of Japan, 650 North A'ohoku Place, Hilo, HI 96720 (United States); Ly, Chun [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Furusawa, Hisanori [Astronomy Data Center, National Astronomical Observatory, Mitaka, Tokyo 181-8588 (Japan); Shibuya, Takatoshi; Ishizaki, Yoshifumi; Toshikawa, Jun, E-mail: n.kashikawa@nao.ac.jp [Department of Astronomy, School of Science, Graduate University for Advanced Studies, Mitaka, Tokyo 181-8588 (Japan)

2011-06-20T23:59:59.000Z

110

Long range alpha particle detector  

DOE Patents (OSTI)

An alpha particle detector capable of detecting alpha radiation from distant sources. In one embodiment, a high voltage is generated in a first electrically conductive mesh while a fan draws air containing air molecules ionized by alpha particles through an air passage and across a second electrically conductive mesh. The current in the second electrically conductive mesh can be detected and used for measurement or alarm. The detector can be used for area, personnel and equipment monitoring.

MacArthur, Duncan W. (Los Alamos, NM); Wolf, Michael A. (Los Alamos, NM); McAtee, James L. (Los Alamos, NM); Unruh, Wesley P. (Los Alamos, NM); Cucchiara, Alfred L. (Los Alamos, NM); Huchton, Roger L. (Los Alamos, NM)

1993-01-01T23:59:59.000Z

111

Long range alpha particle detector  

DOE Patents (OSTI)

An alpha particle detector capable of detecting alpha radiation from distant sources. In one embodiment, a high voltage is generated in a first electrically conductive mesh while a fan draws air containing air molecules ionized by alpha particles through an air passage and across a second electrically conductive mesh. The current in the second electrically conductive mesh can be detected and used for measurement or alarm. The detector can be used for area, personnel and equipment monitoring.

MacArthur, D.W.; Wolf, M.A.; McAtee, J.L.; Unruh, W.P.; Cucchiara, A.L.; Huchton, R.L.

1993-02-02T23:59:59.000Z

112

Colombia-US Forest Service Program | Open Energy Information  

Open Energy Info (EERE)

Colombia-US Forest Service Program Jump to: navigation, search Name Colombia-US Forest Service Program AgencyCompany Organization United States Forest Service Sector Land Focus...

113

Benefits of Tropical Forest Management Under the New Climate...  

Open Energy Info (EERE)

plantation, forest-to-acacia plantation, forest-to-rubber plantation, and forest-to-oil palm plantation. We determined annual equivalent values for each option, and the...

114

Laboratory Dynamos Professor Cary Forest  

NLE Websites -- All DOE Office Websites (Extended Search)

Dynamos Professor Cary Forest University of Wisconsin - Madison Wednesday, June 5, 2013 - 4:15PM MBG AUDITORIUM Refreshments at 4:00PM The PrinceTon Plasma Physics laboraTory is a...

115

Dispersion Parameters over Forested Terrain  

Science Conference Proceedings (OSTI)

A unique set of micrometeorological data was obtained during a 1967–70 multidisciplinary environmental field program in a tropical forest environment. The program was under the sponsorship of the Advanced Research Project Agency (ARPA) and was ...

R. T. Pinker; J. Z. Holland

1988-11-01T23:59:59.000Z

116

A TRANSISTORIZED ALPHA COUNTER FOR AN ALPHA GAUGE  

SciTech Connect

A transistorized instrument prototype was designed and constructed to replace a vacuum-tube instrument in an alpha gauge, which measures the thickness density of gases. The instrument amplifies, shapes, discriminates, and counts alpha pulses from a Au-Si surface-barrier detector exposed to an alpha source in a gas-filled chamber. The circuit consists of a charge-sensitive preamplifier, a main amplifier with pulse clipping, a Schmitt trigger, a diode pump, and a count rate meter. Preliminary tests gave results comparable to the vacuum-tube instrument. Accuracy of counting was within 10% for 0.5- to 10-Mev alpha particles emitted at a maximum rate of 10/sup 6 per sec. The instrument was stable at 25 to 55 deg C, is small and portable, and costs less than 0. An infinitely thick, alpha source that will give a high count rate is being constructed for final tests. (auth)

Kopp, M.C.

1962-08-23T23:59:59.000Z

117

Forest Service Special Use Authorization | Open Energy Information  

Open Energy Info (EERE)

Forest Service Special Use Authorization Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Reference Material: Forest Service Special Use Authorization Details...

118

Comparing simulations of three conceptually different forest models with National Forest Inventory data  

Science Conference Proceedings (OSTI)

Although they were originally introduced for different purposes, forest models are often used today for scenario development, which includes forest production as one aspect of forest development. However, studies using an independent data set to compare ... Keywords: Climate change, Ecosystem model, Forest growth, Increment, Sensitivity, Simulator

Markus O. Huber; Chris S. Eastaugh; Thomas Gschwantner; Hubert Hasenauer; Georg Kindermann; Thomas Ledermann; Manfred J. Lexer; Werner Rammer; Stefan SchöRghuber; Hubert Sterba

2013-02-01T23:59:59.000Z

119

Global Forest Resource Assessment | Open Energy Information  

Open Energy Info (EERE)

Global Forest Resource Assessment Global Forest Resource Assessment Jump to: navigation, search Tool Summary Name: Global Forest Resource Assessment Agency/Company /Organization: Food and Agriculture Organization of the United Nations Sector: Land Focus Area: Forestry Topics: Resource assessment Resource Type: Publications Website: www.fao.org/forestry/fra/fra2010/en/ Global Forest Resource Assessment Screenshot References: Global Forest Research Assessment[1] Overview "FAO, in cooperation with its member countries, has monitored the world's forests at 5 to 10 year intervals since 1946. These global assessments provide valuable information to policy-makers in countries, to international negotiations, arrangements and organizations related to forests and to the general public. The Global Forest Resources Assessment

120

International Forest Policy Database | Open Energy Information  

Open Energy Info (EERE)

International Forest Policy Database International Forest Policy Database Jump to: navigation, search Tool Summary LAUNCH TOOL Name: International Forest Policy Database Agency/Company /Organization: GTZ Sector: Land Focus Area: Forestry Topics: Policies/deployment programs Resource Type: Dataset Website: www.etfrn.org/etfrn/topics/policy/index.html International Forest Policy Database Screenshot References: GTZ International Forest Policy Database[1] Overview "This topic page is being developed in cooperation with GTZ-IWP, the International Forest Policy project of the German organisation for international cooperation. GTZ-IWP has contributed considerably to the ETFRN NEWS 41/42 on national forest programmes. During this cooperation both GTZ and ETFRN identified a need for a central point of access to information on international forest

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Tropical Africa: Total Forest Biomass (By Country)  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical Africa: Total Forest Biomass (By Country) Tropical Africa: Total Forest Biomass (By Country) image Brown, S., and G. Gaston. 1996. Tropical Africa: Land Use, Biomass, and Carbon Estimates For 1980. ORNL/CDIAC-92, NDP-055. Carbon Dioxide Information Analysis Center, U.S. Department of Energy, Oak Ridge National Laboratory, Oak Ridge, Tennessee, U.S.A. More Maps Calculated Actual Aboveground Live Biomass in Forests (1980) Maximum Potential Biomass Density Land Use (1980) Area of Closed Forests (By Country) Mean Biomass of Closed Forests (By County) Area of Open Forests (By Country) Mean Biomass of Open Forests (By County) Percent Forest Cover (By Country) Population Density - 1990 (By Administrative Unit) Population Density - 1980 (By Administrative Unit) Population Density - 1970 (By Administrative Unit)

122

NPP Tropical Forest: Darien, Panama  

NLE Websites -- All DOE Office Websites (Extended Search)

Darien, Panama, 1967-1968 Darien, Panama, 1967-1968 [PHOTOGRAPH] Photograph: Tropical moist forest near Darien (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Golley, F. B. 1998. NPP Tropical Forest: Darien, Panama, 1967-1968. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and nutrient content of different vegetation components and soil for a transitional moist/dry tropical forest were determined in 1967-68 at Darien Province, Panama. NPP was not estimated. Situated about 160 km ESE of Panama City, close to the town of Santa Fe, the Darien study site consisted of two plots, about 8 km apart, one of

123

NPP Tropical Forest: Chamela, Mexico  

NLE Websites -- All DOE Office Websites (Extended Search)

Chamela, Mexico, 1982-1995 Chamela, Mexico, 1982-1995 [PHOTOGRAPH] Photograph: Litter trap and throughfall collector in the Chamela forest (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Maass, M., and A. Martinez-Yrizar. 2001. NPP Tropical Forest: Chamela, Mexico, 1982-1995. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Net primary productivity (NPP) of a tropical dry deciduous forest was estimated, based on the integration of ecosystem data obtained in various years between 1982 and 1995, at the Chamela Biological Station of the National Autonomous University of Mexico (UNAM). The Biosphere Reserve Chamela-Cuixmala, Jalisco, is situated near the

124

NPP Tropical Forest: Atherton, Australia  

NLE Websites -- All DOE Office Websites (Extended Search)

Atherton, Australia, 1974-1985 Atherton, Australia, 1974-1985 [PHOTOGRAPH] Photograph: View across the forest canopy near Atherton (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Stocker, G. C. 2001. NPP Tropical Forest: Atherton, Australia, 1974-1985. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Litterfall was determined over 3-4 years (1974/5-1978) for two tropical rainforest sites and for 5 years (1980-1985) for a third study site near Atherton, Queensland, in northeast Australia. Although net primary production (NPP) was not determined, the extensive site description data and the rarity of measurements on tropical forests south of the Equator

125

NPP Tropical Forest: Kade, Ghana  

NLE Websites -- All DOE Office Websites (Extended Search)

Kade, Ghana, 1957-1972 Kade, Ghana, 1957-1972 [PHOTOGRAPH] Photograph: Forest after clearing of secondary growth at the Kade site (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Nye, P. H., and D. J. Greenland. 1998. NPP Tropical Forest: Kade, Ghana, 1957-1972. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and nutrient content of different vegetation components and soil for a secondary tropical forest were determined in the late 1950s at the Kade Agricultural Research Station of the former University College, Ghana. Net primary production (NPP) was estimated on the basis of standing biomass accumulation and litter fall. Later studies on litter and wood fall and

126

In Search of the Rain Forest  

E-Print Network (OSTI)

oil extraction in Ecuador, the appropriation and industrialization of herbal medicine in the forests of Belize, a critical history

Hamilton-Smith, Elery

2005-01-01T23:59:59.000Z

127

SDPISustainable Development Policy Institute Pakistan Forest  

E-Print Network (OSTI)

#12;SDPISustainable Development Policy Institute Quarterly Pakistan Forest Digest Vol. 01, No. 02 Development Policy Institute Pakistan Forest Digest ii Vol. 1, No. 2, July ­ September 2010 Quarterly Pakistan Board Dr. Urs Geiser Zurich University, Switzerland Dr. Mamoona Wali Muhammad Pakistan Forest Institute

Richner, Heinz

128

SDPISustainable Development Policy Institute Pakistan Forest  

E-Print Network (OSTI)

#12;SDPISustainable Development Policy Institute Quarterly Pakistan Forest Digest Vol. 01, No. 01 Development Policy Institute Pakistan Forest Digest iii Vol. 1, No. 1, April ­ June 2010 Quarterly Pakistan Forest Digest Vol. 01, No. 01 ISBN: 2218-8045 April ­ June 2010 Contents P. No Introductions: Pakistan

Richner, Heinz

129

Forest Conservation Act (Maryland) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Forest Conservation Act (Maryland) Forest Conservation Act (Maryland) Forest Conservation Act (Maryland) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor Industrial Installer/Contractor Investor-Owned Utility Local Government Municipal/Public Utility Nonprofit Retail Supplier Rural Electric Cooperative State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Maryland Program Type Environmental Regulations Siting and Permitting Provider Maryland Department of Natural Resources The main purpose of Maryland's Forest Conservation Act is to minimize the loss of Maryland's forest resources during land development by making the

130

Enhanced Raw Materials Forest Products Environmental Influences on Wood Chemistry and Density of Populus and Loblolly  

E-Print Network (OSTI)

of Sterility in Forest Trees................................................................................................... 2

Hq Program Managers

2005-01-01T23:59:59.000Z

131

Forest Carbon Index | Open Energy Information  

Open Energy Info (EERE)

Forest Carbon Index Forest Carbon Index Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Forest Carbon Index Agency/Company /Organization: Resources for the Future Partner: United Nations Foundation Sector: Land Focus Area: Forestry Topics: Finance, GHG inventory, Market analysis Resource Type: Maps, Software/modeling tools User Interface: Website Website: www.forestcarbonindex.org/ Web Application Link: www.forestcarbonindex.org/maps.html Cost: Free References: Forest Carbon Index [1] The Forest Carbon Index (FCI) compiles and displays global data relating to biological, economic, governance, investment, and market readiness conditions for every forest and country in the world, revealing the best places and countries for forest carbon investments. Please use this site to

132

Sustainable Forest Finance Toolkit | Open Energy Information  

Open Energy Info (EERE)

Sustainable Forest Finance Toolkit Sustainable Forest Finance Toolkit Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Sustainable Forest Finance Toolkit Agency/Company /Organization: World Business Council for Sustainable Development Sector: Land Focus Area: Forestry Topics: Finance Resource Type: Guide/manual Website: www.pwc.co.uk/pdf/forest_finance_toolkit.pdf Sustainable Forest Finance Toolkit Screenshot References: Sustainable Forest Finance Toolkit[1] Overview "This Toolkit has been developed jointly by PricewaterhouseCoopers (PwC) and the World Business Council for Sustainable Development (WBCSD). It is a globally applicable resource designed to help financial institutions support the management of forest resources through sustainable and legal timber production and processing, and markets for carbon and other

133

Workshop on Precision Measurements of $\\alpha_s$  

Science Conference Proceedings (OSTI)

These are the proceedings of the Workshop on Precision Measurements of {alpha}{sub s} held at the Max-Planck-Institute for Physics, Munich, February 9-11, 2011. The workshop explored in depth the determination of {alpha}{sub s}(m{sub Z}) in the {ovr MS} scheme from the key categories where high precision measurements are currently being made, including DIS and global PDF fits, {tau}-decays, electro-weak precision observables and Z-decays, event-shapes, and lattice QCD. These proceedings contain a short summary contribution from the speakers, as well as the lists of authors, conveners, participants, and talks.

Bethke, Siegfried; /Munich, Max Planck Inst.; Hoang, Andre H.; /Vienna U.; Kluth, Stefan; /Munich, Max Planck Inst.; Schieck, Jochen; /Munich U.; Stewart, Iain W.; Aoki, S.; Beneke, M.; Bethke, S.; Blumlein, J.; Brambilla, N.; Brodsky, S.; /MIT, LNS

2011-10-01T23:59:59.000Z

134

Evironmental protection in Malaysia with sustainable forest management practices  

Science Conference Proceedings (OSTI)

Malaysia has achieved a very significant development socio-economically since independent in 1957. Large tracts of forest have been converted to give way to settlements and agricultural and industrial areas. Logging is still being carried out annually. ... Keywords: environmental protection, forest certification, forest harvesting, sustainable forest management, tropical forest resources

Dato'Hj Dahlan Hj. Taha; Hj. Kamaruzaman Jusoff

2008-02-01T23:59:59.000Z

135

NPP Boreal Forest: Mississagi, Canada  

NLE Websites -- All DOE Office Websites (Extended Search)

Mississagi, Canada, 1970-1973 Mississagi, Canada, 1970-1973 Data Citation Cite this data set as follows: Morrison, I. K., and N. W. Foster. 2001. NPP Boreal Forest: Mississagi, Canada, 1970-1973. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and nutrient content of different vegetation components and soil were determined for a 30-year old pine forest in northern Ontario, Canada, and a detailed nutrient budget published. The 30-year old stand was compared with nearby 20-year old and 65-year old stands, all of which were growing on a glaciofluvial flat. Net primary productivity (NPP) was not directly estimated, but data exist on above-ground tree growth and litterfall.

136

NPP Boreal Forest: Schefferville, Canada  

NLE Websites -- All DOE Office Websites (Extended Search)

Schefferville, Canada, 1974 Schefferville, Canada, 1974 Data Citation Cite this data set as follows: Rencz, A. N., and A. N. D. Auclair. 2001. NPP Boreal Forest: Schefferville, Canada, 1974. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and nutrient content of a boreal ecosystem (subarctic lichen woodland) was determined at Schefferville, Canada, during the 1974 growing season. The main objective was to describe a "typical" lichen woodland, a vegetation type found in the transitional zone between boreal forest and tundra on well-drained, nutrient-poor podzolic soils. Such areas are occupied sparsely by black spruce trees (Picea mariana) with low growth

137

Alpha-nucleus potential for alpha-decay and sub-barrier fusion  

E-Print Network (OSTI)

The set of parameters for alpha-nucleus potential is derived by using the data for both the alpha-decay half-lives and the fusion cross-sections around the barrier for reactions alpha+40Ca, alpha+59Co, alpha+208Pb. The alpha-decay half-lives are obtained in the framework of a cluster model using the WKB approximation. The evaluated alpha-decay half-lives and the fusion cross-sections agreed well with the data. Fusion reactions between alpha-particle and heavy nuclei can be used for both the formation of very heavy nuclei and spectroscopic studies of the formed compound nuclei.

V. Yu. Denisov; H. Ikezoe

2005-10-27T23:59:59.000Z

138

Wild Life Restoration in the Forest Preserves  

NLE Websites -- All DOE Office Websites (Extended Search)

Life Restoration in the Forest Preserves Life Restoration in the Forest Preserves Nature Bulletin No. 613 October 15, 1960 Forest Preserve District of Cook County Daniel Ryan, President Roberts Mann, Conservation Editor David H. Thompson, Senior Naturalist WILD LIFE RESTORATION IN THE FOREST PRESERVES The wealth of wildlife in the Cook County forest preserves rivals that in any of the other 101 Illinois counties, in spite of the fact that over half of the state's people are crowded within its boundaries. The large variety of birds, mammals and other animal life now in this county is possible largely because the Forest Preserve District protects their natural habitats, including many that have been restored. These include timbered rolling uplands, wooded stream valleys, prairie remnants, sand flats, marshes, and a hundred bodies of water. Protection, for as much as forty years, against fire, hunting, trapping and other destruction has allowed the natural comeback of these habitats and the build-up of wildlife populations.

139

Governance of Forests Initiative | Open Energy Information  

Open Energy Info (EERE)

Forests Initiative Forests Initiative Jump to: navigation, search Name Governance of Forests Initiative Agency/Company /Organization World Resources Institute Sector Land Focus Area Forestry Topics Implementation, Policies/deployment programs Resource Type Lessons learned/best practices Website http://www.wri.org/project/gov Country Brazil, Indonesia UN Region Latin America and the Caribbean References WRI-Forests [1] Overview "The Governance of Forests Initiative (GFI) is a collaboration between WRI, the Instituto do Homem e Meio Ambiente da Amazonia (IMAZON), and the Instituto Centro de Vida (ICV) to develop a framework of indicators for assessing and improving governance in the forest sector, as an essential precursor to debating whether and how to unleash market forces to

140

Superior National Forest Project/Campaign Document  

NLE Websites -- All DOE Office Websites (Extended Search)

Superior National Forest Project/Campaign Document Superior National Forest Project/Campaign Document Summary: This project was an intensive remote sensing and field study of the boreal forest in the Superior National Forest (SNF). The purpose of this experiment was to investigate the ability of remote-sensing data to provide estimates of biophysical properties of ecosystems, such as leaf area index (LAI), biomass, and net primary productivity (NPP). The SNF is mostly covered by boreal forest. Boreal forests were chosen for this project because of their relative taxonomic simplicity, their great extent, and their potential sensitivity to climatic change. Information on the SNF project is available by accessing the SNF pages maintained by the ORNL DAAC at http://daac.ornl.govSNF/summary.html. Table of Contents:

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

APPENDIX C Colorado Statewide Forest Resource Assessment Protect Forests From Harm  

E-Print Network (OSTI)

on insect and disease activity in the state. Because the current aerial survey is conducted by different1 APPENDIX C ­ Colorado Statewide Forest Resource Assessment Data Gaps Protect Forests From Harm o. Need updated LANDFIRE data on the current condition of Colorado's lodgepole pine forests. Need a fuel

142

China's forest products trade falls nearly 18% China's forest products trade falls nearly 18%  

E-Print Network (OSTI)

China's forest products trade falls nearly 18% China's forest products trade falls nearly 18% 11/08/2009 - 09:05 According to China's latest Customs statistics, foreign trade of China's forest products in the first five months showed a year-on-year general downturn. The total value of foreign trade of China

143

Machine Learning Benchmarks and Random Forest Regression  

E-Print Network (OSTI)

Machine Learning Benchmarks and Random Forest Regressionerror on a suite of benchmark datasets. As the basethe Machine Learning Benchmark Problems package; see http://

Segal, Mark R

2004-01-01T23:59:59.000Z

144

Discriminant Random Forest (DRF) Classification Methodology  

Jupiter Laser Facility. ... State-of-the-art methodologies that perform this type of classification include Support Vector Machines, Neural Networks, and Random Forest.

145

Scientists Classify Forest Disturbances to Grow Understanding...  

NLE Websites -- All DOE Office Websites (Extended Search)

Scientists Classify Forest Disturbances to Grow Understanding of Climate Change Daniel Hayes, shown here outside of Nome, Alaska, traveled to the Arctic in June to study climate...

146

Christian veneer dryer: Forest products fact sheet  

SciTech Connect

Fact sheet written for the Inventions and Innovation Program about a new closed rotary drum dryer for the forest products industry.

NREL

1999-12-14T23:59:59.000Z

147

Black Forest Partners | Open Energy Information  

Open Energy Info (EERE)

Partners Jump to: navigation, search Name Black Forest Partners Place San Francisco, California Zip 94111 Product San Francisco-based project developer focused on building...

148

Forest Carbon Partnership Facility | Open Energy Information  

Open Energy Info (EERE)

Forest Carbon Partnership Facility Forest Carbon Partnership Facility Jump to: navigation, search Logo: Forest Carbon Partnership Facility Name Forest Carbon Partnership Facility Agency/Company /Organization World Bank Sector Land Focus Area Forestry Topics Co-benefits assessment, Finance Resource Type Lessons learned/best practices, Training materials Website http://www.forestcarbonpartner Country Argentina, Bolivia, Cambodia, Cameroon, Central African Republic, Chile, Colombia, Costa Rica, Democratic Republic of Congo, El Salvador, Equatorial Guinea, Ethiopia, Gabon, Ghana, Guatemala, Guyana, Honduras, Indonesia, Kenya, Laos, Laos, Liberia, Madagascar, Mexico, Moldova, Mozambique, Nepal, Nicaragua, Panama, Papua New Guinea, Paraguay, Peru, Republic of the Congo, Suriname, Tanzania, Thailand, Uganda, Vanuatu, Vietnam

149

A synopsis of collective alpha effects and implications for ITER  

SciTech Connect

This paper discusses the following: Alpha Interaction with Toroidal Alfven Eigenmodes; Alpha Interaction with Ballooning Modes; Alpha Interaction with Fishbone Oscillations; and Implications for ITER.

Sigmar, D.J.

1990-10-01T23:59:59.000Z

150

Determination of alpha_s from tau decays  

E-Print Network (OSTI)

Hadronic tau decays offer the possibility of determining the strong coupling alpha_s at relatively low energy. Precisely for this reason, however, good control over the perturbative QCD corrections, the non-perturbative condensate contributions in the framework of the operator product expansion (OPE), as well as the corrections going beyond the OPE, the duality violations (DVs), is required. On the perturbative QCD side, the contour-improved versus fixed-order resummation of the series is still an issue, and will be discussed. Regarding the analysis, self-consistent fits to the data including all theory parameters have to be performed, and this is also explained in some detail. The fit quantities are moment integrals of the tau spectral function data in a certain energy window and care should be taken to have acceptable perturbative behaviour of those moments as well as control over higher-dimensional operator corrections in the OPE.

Jamin, Matthias

2013-01-01T23:59:59.000Z

151

Forest Monitoring for Action (FORMA) | Open Energy Information  

Open Energy Info (EERE)

Forest Monitoring for Action (FORMA) Forest Monitoring for Action (FORMA) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Forest Monitoring for Action (FORMA) Agency/Company /Organization: Center for Global Development Sector: Land, Climate Focus Area: Forestry Topics: GHG inventory, Resource assessment Resource Type: Maps Website: www.cgdev.org/section/initiatives/_active/forestmonitoringforactionfor Cost: Free Forest Monitoring for Action (FORMA) Screenshot References: FORMA[1] "Forest Monitoring for Action (FORMA) uses freely available satellite data to generate rapidly updated online maps of tropical forest clearing, providing useful information for local and national forest conservation programs, as well as international efforts to curb greenhouse gas emissions by paying to keep forests intact."

152

EIS-0045: Coal Conversion Program, Continental Forest Industries...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

45: Coal Conversion Program, Continental Forest Industries, Combustors 1,2, and 3, Port Wentworth, Chatham County, Georgia EIS-0045: Coal Conversion Program, Continental Forest...

153

Before the House Subcommittee on National Parks, Forests and...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Parks, Forests and Public Lands - Committee on Natural Resources Before the House Subcommittee on National Parks, Forests and Public Lands - Committee on Natural Resources Before...

154

A Design-Builder's Perspective: Anaerobic Digestion, Forest County...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

A Design-Builder's Perspective: Anaerobic Digestion, Forest County Potawatomi Community - A Case Study A Design-Builder's Perspective: Anaerobic Digestion, Forest County Potawatomi...

155

EIS-0442: Forest Service Reauthorization of Transmission Lines...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Utah and Nebraska for Routine Maintenance Practices including Changes in Vegetation Management EIS-0442: Forest Service Reauthorization of Transmission Lines on Forest Service...

156

Community-Based Forest (Natural) Resource Management: A Path...  

Open Energy Info (EERE)

Based Forest (Natural) Resource Management: A Path to Sustainable Environment and Development Jump to: navigation, search Name Community-Based Forest (Natural) Resource Management:...

157

APPROACHES TO SUSTAINABLE FOREST MANAGEMENT IN PARCELIZED LANDSCAPES.  

E-Print Network (OSTI)

??The holistic, landscape-based approach of Sustainable Forest Management (SFM) in the United States emphasizes the importance of addressing three components of forest management: ecology, community,… (more)

Baumflek, Michelle

158

Nature climate change features Los Alamos forest research  

NLE Websites -- All DOE Office Websites (Extended Search)

Nature climate change features forest research Nature climate change features Los Alamos forest research The print issue features as its cover story the tree-stress research of...

159

Regulation and Moral Hazard in Forest Concessions in Brazil  

E-Print Network (OSTI)

and Forest Concessions in Brazil. Planejamento e Políticaswelfare maximization in Brazil. Rio de Janeiro: IPEA, 1998.in Forest Concessions in Brazil Eduardo A. Tillmann MS.

Balbinotto Neto, Giácomo; Tillmann, Eduardo A; Ratnieks, Ianes

2012-01-01T23:59:59.000Z

160

Refinement of the $n-\\alpha$ and $p-\\alpha$ fish-bone potential  

E-Print Network (OSTI)

The fishbone potential of composite particles simulates the Pauli effect by nonlocal terms. We determine the $n-\\alpha$ and $p-\\alpha$ fish-bone potential by simultaneously fitting to the experimental phase shifts. We found that with a double Gaussian parametrization of the local potential can describe the $n-\\alpha$ and $p-\\alpha$ phase shifts for all partial waves.

Smith, E; Papp, Z

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Grazing Management in Broadleaf Forests  

E-Print Network (OSTI)

and Gallandat 1996). Numerous reports also highlight damages caused by cattle grazing on trees and seedlings, and its ill effects on soil, water and environment (Bolt et al. 1978; Clary and Medin, 1990; and Kovalchik and Elmore, 1992). In Journal of Bhutan... in Broadleaf Forests 105 Rubia, Rubus and Solonum form the bulk of the cattle-feed. The number of Viola, Pilea, Elatostema and Aporosa are high but their contribution to herbage production for animal intake is very little as they are tiny...

Norbu, Lungten

2002-01-01T23:59:59.000Z

162

Nitrogen and Phosphorus Availability in Forests of Varying Ages in the Bartlett Experimental Forest White Mountains, New Hampshire.  

E-Print Network (OSTI)

??Human-induced changes such as nitrogen deposition and forest harvest can alter biogeochemical cycling in temperate forests. However, it is still unclear what impacts increased N… (more)

Ratliff, Tera Jean

2012-01-01T23:59:59.000Z

163

Effects of Nontropical Forest Cover on Climate  

Science Conference Proceedings (OSTI)

The albedo of a forest with snow on the ground is much less than that of snow-covered low vegetation such as tundra. As a result, simulation of the Northern Hemisphere climate, when fully forested south of a suitably chosen taiga/tundra boundary (...

J. Otterman; M-D. Chou; A. Arking

1984-05-01T23:59:59.000Z

164

Gas Turbine Fault Diagnosis using Random Forests  

Science Conference Proceedings (OSTI)

In the present paper, Random Forests are used in a critical and at the same time non trivial problem concerning the diagnosis of Gas Turbine blading faults, portraying promising results. Random forests-based fault diagnosis is treated as a Pattern Recognition ...

Manolis Maragoudakis; Euripides Loukis; Panayotis-Prodromos Pantelides

2008-06-01T23:59:59.000Z

165

PLANAR MEMS SUPERCAPACITOR USING CARBON NANOTUBE FORESTS  

E-Print Network (OSTI)

PLANAR MEMS SUPERCAPACITOR USING CARBON NANOTUBE FORESTS Y.Q. Jiang, Q. Zhou, and L. Lin Mechanical ABSTRACT Planar micro supercapacitors utilizing vertically aligned carbon nanotube (CNT) forests and very robust cycling stability. As such, we believe these planar MEMS supercapacitors could

Lin, Liwei

166

All that jazz in the random forest  

Science Conference Proceedings (OSTI)

In this paper, we address the problem of automatic identification of instruments in audio records, in a frame-by-frame manner. Random forests have been chosen as a classifier. Training data represent sounds of selected instruments which originate from ... Keywords: music information retrieval, random forests, sound recognition

El?bieta Kubera; Miron B. Kursa; Witold R. Rudnicki; Rados?aw Rudnicki; Alicja A. Wieczorkowska

2011-06-01T23:59:59.000Z

167

Steiner Forest Orientation Problems Marek Cygan1  

E-Print Network (OSTI)

Steiner Forest Orientation Problems Marek Cygan1 , Guy Kortsarz2 , and Zeev Nutov3 1 Institute with orientation constra- ints. Given a directed graph D and a collection of ordered node pairs P let P[D] = {(u, v) P : D contains an uv-path}. In the Steiner Forest Orientation problem we are given an undirected

Kortsarz, Guy

168

Steiner Forest Orientation Problems Marek Cygan1  

E-Print Network (OSTI)

Steiner Forest Orientation Problems Marek Cygan1 , Guy Kortsarz2 , and Zeev Nutov3 1 IDSIA with orientation constra- ints. Given a directed graph D and a collection of ordered node pairs P let P[D] = {(u, v) P : D contains a uv-path}. In the Steiner Forest Orientation problem we are given an undirected

Kortsarz, Guy

169

Classifying forest productivity at different scales  

DOE Green Energy (OSTI)

Spatial scale is an important consideration when evaluating, using, or constructing forest productivity classifications. First, the factors which dominate spatial variability in forest productivity are scale dependent. For example, within a stand, spatial variability in productivity is dominated by microsite differences; within a national forest such as the Cherokee National Forest, spatial variability is dominated by topography and land-use history (e.g., years since harvest); within a large region such as the southeast, spatial variability is dominated by climatic patterns. Second, classifications developed at different spatial scales are often used for different purposes. For example, stand-level classifications are often keys or rules used in the field to judge the quality or potential of a site. National-forest classifications are often presented as maps or tables and may be used in forest land planning. Regional classifications may be maps or tables and may be used to quantify or predict resource availability. These scale-related differences in controlling factors and purposes will affect both the methods and the data used to develop classifications. In this paper, I will illustrate these points by describing and comparing three forest productivity classifications, each developed for a specific purpose at a specific scale. My objective is not to argue for or against any of these particular classifications but rather to heighten awareness of the critical role that spatial scale plays in the use and development of forest productivity classifications. 8 refs., 2 figs., 1 tab.

Graham, R.L.

1991-01-01T23:59:59.000Z

170

California's forest resources. Preliminary assessment  

SciTech Connect

This Preliminary Assessment was prepared in response to the California Forest Resources Assessment and Policy Act of 1977 (FRAPA). This Act was passed to improve the information base upon which State resource administrators formulate forest policy. The Act provides for this report and a full assessment by 1987 and at five year intervals thereafter. Information is presented under the following chapter titles: introduction to the forest resources assessment program; the forest area: a general description; classifications of the forest lands; the watersheds; forest lands and the air resource; fish and wildlife resources; the forested rangelands; the wilderness; forest lands as a recreation resource; the timber resource; wood energy; forest lands and the mineral, fossil fuels, and geothermal energy resources; mathematically modeling California's forest lands; vegetation mapping using remote sensing technology; important forest resources legislation; and, State and cooperative State/Federal forestry programs. Twelve indexes, a bibliography, and glossary are included. (JGB)

1979-01-01T23:59:59.000Z

171

Alpha Channeling in a Rotating Plasma  

E-Print Network (OSTI)

The wave-particle alpha-channeling effect is generalized to include rotating plasma. Specifically, radio frequency waves can resonate with alpha particles in a mirror machine with ExB rotation to diffuse the alpha particles along constrained paths in phase space. Of major interest is that the alpha-particle energy, in addition to amplifying the RF waves, can directly enhance the rotation energy which in turn provides additional plasma confinement in centrifugal fusion reactors. An ancillary benefit is the rapid removal of alpha particles, which increases the fusion reactivity.

Fetterman, Abraham J

2008-01-01T23:59:59.000Z

172

Tropical Forest Trust | Open Energy Information  

Open Energy Info (EERE)

Tropical Forest Trust Tropical Forest Trust Name Tropical Forest Trust Address The Forest Trust 721 NW Ninth Avenue, Suite 195 Place Portland, Oregon Zip 97209 Region Pacific Northwest Area Year founded 1999 Website http://www.tft-forests.org/ Coordinates 45.5284073°, -122.6803494° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.5284073,"lon":-122.6803494,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

173

SAR Imagery: Rain Forests, South America  

NLE Websites -- All DOE Office Websites (Extended Search)

Images of Rain Forests in South America Images of Rain Forests in South America The ORNL DAAC now offers a CD-ROM volume containing Synthetic Aperture Radar (SAR) imagery of the rain forest region of South America, including the Amazon Basin. The images were collected during 1995-1996 as part of an international project led by the National Space Development Agency of Japan (NASDA) to map the world's rain forest regions to high resolution by means of SAR. The 4-disc volume--entitled "JERS-1 SAR Global Rain Forest Mapping Project: Vol. AM-1, South America"--is made available under the auspices of the Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). These CDs can be ordered through the ORNL DAAC at http://daac.ornl.gov/prepaks.shtml (look for the "LBA" listings).

174

To Appear in the Astrophysical Journal Letters Preprint typeset using L ATEX style emulateapj v. 6/22/04 DEFINITIVE IDENTIFICATION OF THE TRANSITION BETWEEN SMALL- TO LARGE-SCALE CLUSTERING FOR LYMAN BREAK GALAXIES 1  

E-Print Network (OSTI)

We report angular correlation function (ACF) of Lyman Break Galaxies (LBGs) with unprecedented statistical quality on the basis of 16,920 LBGs at z = 4 detected in the 1 deg2 sky of the Subaru/XMM-Newton Deep Field. The ACF significantly departs from a power law, and shows an excess on small scale. Particularly, the ACF of LBGs with i ? ACF and number density of LBGs can be explained by the cold dark matter model.

Masami Ouchi; Takashi Hamana; Kazuhiro Shimasaku; Toru Yamada; Masayuki Akiyama; Nobunari Kashikawa; Makiko Yoshida; Kentaro Aoki; Masanori Iye; Tomoki Saito; Toshiyuki Sasaki; Chris Simpson; Michitoshi Yoshida

2005-01-01T23:59:59.000Z

175

Ministry of Forests Forest Science ProgramLandslide Risk Case Studies in Forest Development Planning and Operations  

E-Print Network (OSTI)

Ministry of Forests Forest Science ProgramThe use of trade, firm, or corporation names in this publication is for the information and convenience of the reader. Such use does not constitute an official endorsement or approval by the Government of British Columbia of any product or service to the exclusion of any others that may also be suitable. This document should be regarded as technical information and not as government policy. National Library of Canada Cataloguing in Publication Data Main entry under title. Landslide risk case studies in forest development planning and operations (Land management handbook, ISSN 0229-1622; 56) Includes bibliographical references: p.

Mike Wise; Glenn Moore; Doug Vandine; Mike Wise; Glenn Moore; Doug Vandine

2004-01-01T23:59:59.000Z

176

Global Forest Products Trade by Ed Pepke, EFI  

E-Print Network (OSTI)

Main sources of information · Forest Products Annual Market Review, UNECE/FAOUNECE/FAO · Importance Lacey Act Amendment f. EU renewable (wood) energy policies Forests, Markets, Policy & PracticeGlobal Forest Products Trade by Ed Pepke, EFI Forests, Markets, Policy & Practice Shanghai, China

177

forest certification in guatemala yale school of forestry & environmental studies  

E-Print Network (OSTI)

for the rules and regulations governing the forest concessions and stip- ulating mandatory certification

178

20/02/20132 `State of The Nations' Forests'  

E-Print Network (OSTI)

·Forest Habitat ·Forest Habitat Condition ·Forest Management ·Forest Use ·Carbon Sequestration ·Timber and increment forecast · Carbon forecast (to be published) · Biomass forecast run (to be published / dead Natural Regeneration NVC & ground, field & shrub layer vegetation General health Dead wood

179

2012Report on the Health of Colorado's Forests  

E-Print Network (OSTI)

, Forest Health Protection, USDA Forest Service, Lakewood, Colo. Brian Howell, Aerial Survey Program2012Report on the Health of Colorado's Forests Forest Stewardship through Active Management #12 Sciences and Pest Management, Colorado State University, Fort Collins, Colo. Susan Gray, Program Lead

Stephens, Graeme L.

180

Correspondence of pollen assemblages with forest zones across steep  

E-Print Network (OSTI)

Forest, a rural site near Petersham, Massachusetts pro- vides a chemical climatology for all seasons over

Gavin, Daniel G.

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Name of Project Pi(s)/Institution(s)  

NLE Websites -- All DOE Office Websites (Extended Search)

Cosmic Frontier/Structure Formation Cosmic Frontier/Structure Formation List of Projects/PI(s)/Institution(s) * ENZO simulations of Baryon Acoustic Oscillation (BAO) in the Lyman Alpha Forest and Galaxy Redshift Surveys (M. Norman, USCD) * No HEP funding (cut from SciDAC2 CAC proposal) Lyman alpha forest Galaxy large scale structure 4096 3 , 16,384 cores Kraken Sloan Digital Sky Survey Baryon Acoustic Oscillations (BAO) in the Cosmic Microwave Background BAO and cosmic structure BAO standard yardstick Baryon Acoustic Oscillations (BAO) * Imprint on the matter power spectrum P(k) due to acoustic oscillations of the baryon-photon fluid prior to recombination * Serves as a standard ruler, calibrated by CMB * Measure d A (z) and H(z) from large galaxy redshift surveys * Systematics requiring extreme scale simulation

182

National Forest Management Act of 1976 | Open Energy Information  

Open Energy Info (EERE)

Forest Management Act of 1976 Forest Management Act of 1976 Jump to: navigation, search Statute Name National Forest Management Act of 1976 Year 1976 Url [[File:|160px|link=]] Description References Wikipedia[1] USFS Forest Management[2] The National Forest Management Act of 1976 is a federal law that governs the administration of national forests. This act requires the United States Forest Service to use a systematic and interdisciplinary approach to resource management in national forests. The USFS provides a full text of the Act here: Pub. L. 94-588 References ↑ "Wikipedia" ↑ "USFS Forest Management" Retrieved from "http://en.openei.org/w/index.php?title=National_Forest_Management_Act_of_1976&oldid=455235" Categories: Federal Environmental Statutes

183

Forests to offset the greenhouse effect  

SciTech Connect

This article discusses the role of trees in the prevention of global warming. If forest plantations are used as carbon sinks, it is estimated that 500 million hectares of intensively managed, rapidly growing plantation forests could sequester all of the 5 billion tons or so of carbon released annually through the burning of fossil fuels and deforestation. Land area requirements would be large enough to dwarf all previous forest plantation efforts. The cost would bean average of $400 per hectare to establish such plantations in the United States.

Sedjo, R.A. (Resources for the Future, Washington, DC (USA))

1989-07-01T23:59:59.000Z

184

Forest Road Building Regulations | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

You are here You are here Home » Forest Road Building Regulations Forest Road Building Regulations < Back Eligibility Utility Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Schools Retail Supplier Institutional Fuel Distributor Nonprofit Transportation Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info Start Date 09/2010 State Wisconsin Program Type Environmental Regulations The Wisconsin Department of Natural Resources has regulations for building a forest road, if development requires one. Regulations include zoning ordinances and permits for stream crossing, grading, stormwater, and

185

Forest Investment Program (FIP) | Open Energy Information  

Open Energy Info (EERE)

Program (FIP) Program (FIP) Jump to: navigation, search Name Forest Investment Program (FIP) Agency/Company /Organization World Bank Sector Land Topics Background analysis, Finance, Implementation, Low emission development planning, Market analysis Website http://www.climatefundsupdate. Program Start 2008 Country Brazil, Burkina Faso, Democratic Republic of Congo, Ghana, Indonesia, Laos, Mexico, Peru South America, Western Africa, Middle Africa, Western Africa, South-Eastern Asia, South-Eastern Asia, Central America, South America References Forest Investment Program (FIP)[1] Forest Investment Program[2] Brazil Specific Documents[3] Democratic Republic of Congo Specific Documents[4] Ghana Specific Documents[5] Indonesia Specific Documents[6] Laos Specific Documents[7]

186

Forest succession at elevated CO2  

DOE Green Energy (OSTI)

We tested hypotheses concerning the response of forest succession to elevated CO2 in the FACTS-1 site at the Duke Forest. We quantified growth and survival of naturally recruited seedlings, tree saplings, vines, and shrubs under ambient and elevated CO2. We planted seeds and seedlings to augment sample sites. We augmented CO2 treatments with estimates of shade tolerance and nutrient limitation while controlling for soil and light effects to place CO2 treatments within the context of natural variability at the site. Results are now being analyzed and used to parameterize forest models of CO2 response.

Clark, James S.; Schlesinger, William H.

2002-02-01T23:59:59.000Z

187

Discriminant forest classification method and system  

DOE Patents (OSTI)

A hybrid machine learning methodology and system for classification that combines classical random forest (RF) methodology with discriminant analysis (DA) techniques to provide enhanced classification capability. A DA technique which uses feature measurements of an object to predict its class membership, such as linear discriminant analysis (LDA) or Andersen-Bahadur linear discriminant technique (AB), is used to split the data at each node in each of its classification trees to train and grow the trees and the forest. When training is finished, a set of n DA-based decision trees of a discriminant forest is produced for use in predicting the classification of new samples of unknown class.

Chen, Barry Y.; Hanley, William G.; Lemmond, Tracy D.; Hiller, Lawrence J.; Knapp, David A.; Mugge, Marshall J.

2012-11-06T23:59:59.000Z

188

The Detection of Forest Structures in the Monongahela National Forest Using LiDAR.  

E-Print Network (OSTI)

??The mapping of structural elements of a forest is important for forestry management to provide a baseline for old and new-growth trees while providing height… (more)

Norman, Dominique

2012-01-01T23:59:59.000Z

189

Beta/alpha continuous air monitor  

DOE Patents (OSTI)

A single deep layer silicon detector in combination with a microcomputer, recording both alpha and beta activity and the energy of each pulse, distinquishing energy peaks using a novel curve fitting technique to reduce the natural alpha counts in the energy region where plutonium and other transuranic alpha emitters are present, and using a novel algorithm to strip out radon daughter contribution to actual beta counts. 7 figs.

Becker, G.K.; Martz, D.E.

1988-06-27T23:59:59.000Z

190

Plant and microbial controls on nitrogen retention and loss in a Humid Tropical Forest  

E-Print Network (OSTI)

Experimental Forest, Puerto Rico. Hydrological Processes 18:and productivity in Puerto-Rico's luquillo mountains.experimental forest Puerto Rico. US Forest Serv Gen Tech Rep

Templer, P.

2009-01-01T23:59:59.000Z

191

Available Technologies: Biological Production of Alpha Olefins ...  

APPLICATIONS OF TECHNOLOGY: Production of the following from sugar or starch: alpha olefins including 1-hexene, 1-decene, deca-1,5-diene, aromatic ...

192

SHOE V.1.5 ALPHA  

Energy Science and Technology Software Center (OSTI)

002913MLTPL00 Sandia Higher Order Elements (SHOE) v 0.5 alpha  http://midas3.kitware.com/midas/folder/10328 

193

NPP Tropical Forest: Luquillo, Puerto Rico  

NLE Websites -- All DOE Office Websites (Extended Search)

Luquillo, Puerto Rico, 1963-1994 Luquillo, Puerto Rico, 1963-1994 Data Citation Cite this data set as follows: Lugo, A. E., F. Scatena, and C. F. Jordan. 1999. NPP Tropical Forest: Luquillo, Puerto Rico, 1963-1994. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of lower montane tropical forest has been determined at various study sites within the Luquillo Experimental Forest from 1963 to the present. The Luquillo Experimental Forest is situated in the Luquillo Mountains of eastern Puerto Rico (18.32 N 65.82 W), about 35 km east-southeast of San Juan, and operates under the auspices of the International Institute of Tropical Forestry, Rio Pedras, Puerto Rico. Its total area is about 11,000

194

Chesapeake Forest Lands (Maryland) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Chesapeake Forest Lands (Maryland) Chesapeake Forest Lands (Maryland) Chesapeake Forest Lands (Maryland) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info Start Date 1999 State Maryland Program Type Siting and Permitting Provider Maryland Department of Natural Resources The Chesapeake Forest Lands are most of the former land holdings of the

195

Tropical Forest Foundation | Open Energy Information  

Open Energy Info (EERE)

Tropical Forest Foundation Tropical Forest Foundation Jump to: navigation, search Logo: Tropical Forest Foundation Name Tropical Forest Foundation Address 2121 Eisenhower Ave. Suite 200 Place Alexandria, Virginia Zip 22314 Region Northeast - NY NJ CT PA Area Phone number 703.518.8834 Website http://tropicalforestfoundatio Coordinates 38.8013734°, -77.0668734° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.8013734,"lon":-77.0668734,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

196

Program on Forests | Open Energy Information  

Open Energy Info (EERE)

Forests Forests Jump to: navigation, search Logo: Program on Forests Name Program on Forests Address 1818 H Street NW Place Washington D.C. Zip 20433 Phone number 1.202.522.1142 Website http://www.profor.info/profor/ Coordinates 38.898957°, -77.04256° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.898957,"lon":-77.04256,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

197

NPP Tropical Forest: Manaus, Brazil [Amazonas]  

NLE Websites -- All DOE Office Websites (Extended Search)

Manaus, Brazil, 1963-1990 Manaus, Brazil, 1963-1990 Data Citation Cite this data set as follows: Piedade, M. T. F., and W. J. Junk. 2001. NPP Tropical Forest: Manaus, Brazil, 1963-1990. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and components of productivity for several types of tropical forest were determined for a number of study sites around Manaus, Brazil, from 1963 to the present. The study sites include several (0.2 ha) stands of terra firme (dry land) forest at " 64" to the northeast of Manaus, towards Itacoatiara (approximately 3.0 S 59.7 W, near the " Egler" Reserve), riverine forest in the 10 km x 10 km " Reserve" (2.95 S 59.95 W, 26 km

198

Globalization 300million ha forest area loss  

E-Print Network (OSTI)

from sustainable managed forests using vegetable inks and water-based varnish. Citation UNEP (2011. Our distribution policy aims to reduce UNEP's carbon footprint. #12;i Keeping Track of Our Changing

199

Plasma Dynamo Experiments Cary Forest PPPL Colloquium  

NLE Websites -- All DOE Office Websites (Extended Search)

Dynamo Experiments Cary Forest PPPL Colloquium 5 th June 2013 Wednesday, June 5, 13 So many dynamos (s men dnuh-mz), 1. a phrase which reads the same backwards and...

200

NPP Tropical Forest: La Selva, Costa Rica  

NLE Websites -- All DOE Office Websites (Extended Search)

view a series of images from this site). Data Citation Cite this data set as follows: Clark, D. A. 1998. NPP Tropical Forest: La Selva, Costa Rica, 1969-1985. Data set. Available...

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Turbulence Spectra and Eddy Diffusivity over Forests  

Science Conference Proceedings (OSTI)

The main objectives of this observational study are to examine the stability dependence of velocity and air temperature spectra and to employ the spectral quantities to establish relations for eddy diffusivity over forests. The datasets chosen ...

Xuhui Lee

1996-08-01T23:59:59.000Z

202

NPP Tropical Forest: Barro Colorado, Panama  

NLE Websites -- All DOE Office Websites (Extended Search)

Barro Colorado, Panama, 1969-1990 PHOTOGRAPH Photograph: Buttressed tree at the Barro Colorado tropical forest site (click on the photo to view a series of images from this...

203

Ground Plane Identification Using LIDAR in Forested  

E-Print Network (OSTI)

To operate autonomously in forested environments, unmanned ground vehicles (UGVs) must be able to identify the load-bearing surface of the terrain (i.e. the ground). This paper presents a novel two-stage approach for ...

McDaniel, Matt W.

204

Clustering of Lyman Break Galaxies at z=4 and 5 in The Subaru Deep Field: Luminosity Dependence of The Correlation Function Slope  

E-Print Network (OSTI)

We explored the clustering properties of Lyman Break Galaxies (LBGs) at z=4 and 5 with an angular two-point correlation function on the basis of the very deep and wide Subaru Deep Field data. We found an apparent dependence of the correlation function slope on UV luminosity for LBGs at both z=4 and 5. More luminous LBGs have a steeper correlation function. To compare these observational results, we constructed numerical mock LBG catalogs based on a semianalytic model of hierarchical clustering combined with high-resolution N-body simulation, carefully mimicking the observational selection effects. The luminosity functions for LBGs predicted by this mock catalog were found to be almost consistent with the observation. Moreover, the overall correlation functions of LBGs were reproduced reasonably well. The observed dependence of the clustering on UV luminosity was not reproduced by the model, unless subsamples of distinct halo mass were considered. That is, LBGs belonging to more massive dark haloes had steeper and larger-amplitude correlation functions. With this model, we found that LBG multiplicity in massive dark halos amplifies the clustering strength at small scales, which steepens the slope of the correlation function. The hierarchical clustering model could therefore be reconciled with the observed luminosity-dependence of the angular correlation function, if there is a tight correlation between UV luminosity and halo mass. Our finding that the slope of the correlation function depends on luminosity could be an indication that massive dark halos hosted multiple bright LBGs (abridged).

Nobunari Kashikawa; Makiko Yoshida; Kazuhiro Shimasaku; Masahiro Nagashima; Hideki Yahagi; Masami Ouchi; Yuichi Matsuda; Matthew A. Malkan; Mamoru Doi; Masanori Iye; the SDF team

2005-09-19T23:59:59.000Z

205

THE MOLECULAR GAS CONTENT OF z = 3 LYMAN BREAK GALAXIES: EVIDENCE OF A NON-EVOLVING GAS FRACTION IN MAIN-SEQUENCE GALAXIES AT z > 2  

SciTech Connect

We present observations of the CO[J = 3 {yields} 2] emission toward two massive and infrared luminous Lyman break galaxies (LBGs) at z = 3.21 and z = 2.92, using the IRAM Plateau de Bure Interferometer, placing first constraints on the molecular gas masses (M{sub gas}) of non-lensed LBGs. Their overall properties are consistent with those of typical (main-sequence) galaxies at their redshifts, with specific star formation rates {approx}1.6 and {approx}2.2 Gyr{sup -1}, despite their large infrared luminosities (L{sub IR} Almost-Equal-To (2-3) Multiplication-Sign 10{sup 12} L{sub Sun }) derived from Herschel. With one plausible CO detection (spurious detection probability of 10{sup -3}) and one upper limit, we investigate the evolution of the molecular gas-to-stellar mass ratio (M{sub gas}/M{sub *}) with redshift. Our data suggest that the steep evolution of M{sub gas}/M{sub *} of normal galaxies up to z {approx} 2 is followed by a flattening at higher redshifts, providing supporting evidence for the existence of a plateau in the evolution of the specific star formation rate at z > 2.5.

Magdis, Georgios E.; Rigopoulou, D. [Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH (United Kingdom); Daddi, E.; Sargent, M.; Elbaz, D.; Gobat, R.; Tan, Q.; Aussel, H. [CEA, Laboratoire AIM, Irfu/SAp, F-91191 Gif-sur-Yvette (France); Dannerbauer, H. [Institut fuer Astronophysik, Universitaet Wien, Tuerkenschanzstrasse 17, A-1180 Wien (Austria); Feruglio, C. [IRAM-Institut de RadioAstronomie Millimetrique 300 rue de la Piscine, Domaine Universitaire, F-38406 Saint Martin d' Heres (France); Charmandaris, V. [Department of Physics and Institute of Theoretical and Computational Physics, University of Crete, GR-71003 Heraklion (Greece); Dickinson, M. [NOAO, 950 N. Cherry Avenue, Tucson, AZ 85719 (United States); Reddy, N. [Department of Physics and Astronomy, University of California, Riverside 900 University, Avenue Riverside, CA 92507 (United States)

2012-10-10T23:59:59.000Z

206

The Baryon Oscillation Spectroscopic Survey of SDSS-III  

E-Print Network (OSTI)

The Baryon Oscillation Spectroscopic Survey (BOSS) is designed to measure the scale of baryon acoustic oscillations (BAO) in the clustering of matter over a larger volume than the combined efforts of all previous spectroscopic surveys of large scale structure. BOSS uses luminous galaxies to measure BAO to redshifts z<0.7 and observations of neutral hydrogen in the Lyman alpha forest in quasar spectra to constrain BAO over the redshift range 2.15Lyman alpha forest and a strong detection from the Data Release 9 data set of the BAO in the clustering of massive galaxies at an effective redshift z = 0.57. We project that BOSS will yield measurements of the angular diameter distance d_A to an accuracy of 1.0% at redshifts z=0.3 and z=0.57 and measurements of H(z) to 1.8% and 1.7% at the same redshifts. Forecasts for Lyman alpha forest constraints predict a measurement of an overall dilation fa...

Dawson, Kyle S; Ahn, Christopher P; Anderson, Scott F; Aubourg, Eric; Bailey, Stephen; Barkhouser, Robert H; Bautista, Julian E; Beifiori, Alessandra; Berlind, Andreas A; Bhardwaj, Vaishali; Bizyaev, Dmitry; Blake, Cullen H; Blanton, Michael R; Blomqvist, Michael; Bolton, Adam S; Borde, Arnaud; Bovy, Jo; Brandt, W N; Brewington, Howard; Brinkmann, Jon; Brown, Peter J; Brownstein, Joel R; Bundy, Kevin; Busca, N G; Carithers, William; Carnero, Aurelio R; Carr, Michael A; Chen, Yanmei; Comparat, Johan; Connolly, Natalia; Cope, Frances; Croft, Rupert A C; Cuesta, Antonio J; da Costa, Luiz N; Davenport, James R A; Delubac, Timothee; de Putter, Roland; Dhital, Saurav; Ealet, Anne; Ebelke, Garrett L; Eisenstein, Daniel J; Escoffier, S; Fan, Xiaohui; Ak, N Filiz; Finley, Hayley; Font-Ribera, Andreu; Genova-Santos, R; Gunn, James E; Guo, Hong; Haggard, Daryl; Hall, Patrick B; Hamilton, Jean-Christophe; Harris, Ben; Harris, David W; Ho, Shirley; Hogg, David W; Holder, Diana; Honscheid, Klaus; Huehnerhoff, Joe; Jordan, Beatrice; Jordan, Wendell P; Kauffmann, Guinevere; Kazin, Eyal A; Kirkby, David; Klaene, Mark A; Kneib, Jean-Paul; Goff, Jean-Marc Le; Lee, Khee-Gan; Long, Daniel C; Loomis, Craig P; Lundgren, Britt; Lupton, Robert H; Maia, Marcio A G; Makler, Martin; Malanushenko, Elena; Malanushenko, Viktor; Mandelbaum, Rachel; Manera, Marc; Maraston, Claudia; Margala, Daniel; Masters, Karen L; McBride, Cameron K; McDonald, Patrick; McGreer, Ian D; Mena, Olga; Miralda-Escude, Jordi; Montero-Dorta, Antonio D; Montesano, Francesco; Muna, Demitri; Myers, Adam D; Naugle, Tracy; Nichol, Robert C; Noterdaeme, Pasquier; Olmstead, Matthew D; Oravetz, Audrey; Oravetz, Daniel J; Owen, Russell; Padmanabhan, Nikhil; Palanque-Delabrouille, Nathalie; Pan, Kaike; Parejko, John K; Paris, Isabelle; Percival, Will J; Perez-Fournon, Ismael; Perez-Rafols, Ignasi; Petitjean, Patrick; Pfaffenberger, Robert; Pforr, Janine; Pieri, Matthew M; Prada, Francisco; Price-Whelan, Adrian M; Raddick, M Jordan; Rebolo, Rafael; Rich, James; Richards, Gordon T; Rockosi, Constance M; Roe, Natalie A; Ross, Ashley J; Ross, Nicholas P; Rossi, Graziano; Rubino-Martin, J A; Samushia, Lado; Sanchez, Ariel G; Sayres, Conor; Schmidt, Sarah J; Schneider, Donald P; Scoccola, C G; Seo, Hee-Jong; Shelden, Alaina; Sheldon, Erin; Shen, Yue; Shu, Yiping; Slosar, Anze; Smee, Stephen A; Snedden, Stephanie A; Stauffer, Fritz; Steele, Oliver; Strauss, Michael A; Suzuki, Nao; Swanson, Molly E C; Tal, Tomer; Tanaka, Masayuki; Thomas, Daniel; Tinker, Jeremy L; Tojeiro, Rita; Tremonti, Christy A; Magana, M Vargas; Verde, Licia; Viel, Matteo; Wake, David A; Watson, Mike; Weaver, Benjamin A; Weinberg, David H; Weiner, Benjamin J; West, Andrew A; White, Martin; Wood-Vasey, W M; Yeche, Christophe; Zehavi, Idit; Zhao, Gong-Bo; Zheng, Zheng

2012-01-01T23:59:59.000Z

207

Alpha Technologies | Open Energy Information  

Open Energy Info (EERE)

Technologies Technologies Jump to: navigation, search Name Alpha Technologies Place Bellingham, Washington State Zip 98226 Sector Services, Solar Product Bellingham (WA)-based firm offering, among other products, power conversion products designed specifically for the PV market, plus installation services for solar systems. Coordinates 48.75235°, -122.471219° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":48.75235,"lon":-122.471219,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

208

Healthy Forests Restoration Act of 2003 | Open Energy Information  

Open Energy Info (EERE)

Healthy Forests Restoration Act of 2003 Healthy Forests Restoration Act of 2003 Jump to: navigation, search Statute Name Healthy Forests Restoration Act of 2003 Year 2003 Url [[File:|160px|link=]] Description References Healthy Forests Restoration Act of 2003 PDF[1] This article is a stub. You can help OpenEI by expanding it. The Healthy Forests Initiative (or HFI), officially the Healthy Forests Restoration Act of 2003 (P.L. 108-148), is a law originally proposed by President George W. Bush in response to the widespread forest fires during the summer of 2002.[1] The main thrusts of the law are to thin overstocked stands, clear away vegetation and trees to create shaded fuel breaks, provide funding and guidance to reduce or eliminate hazardous fuels in National Forests, improve forest fire fighting, and research new methods to

209

The European Forest Institute and the Finnish Forest Research Institute: The supply of woody biomass from the forests in the EU can be  

E-Print Network (OSTI)

biomass from the forests in the EU can be significantly increased The supply of woody biomass from. The theoretical biomass potential from the European forests in 2010 is nearly 1.3 billion m3 including bark and woody biomass from early thinnings in young forests. The potential is, however, reduced to about 750

210

CHINA AND FOREST TRADE IN THE ASIA-PACIFIC REGION: IMPLICATIONS FOR FORESTS AND LIVELIHOODS  

E-Print Network (OSTI)

for Chinese Forest Products Exporters © 2008 Forest Trends and Sidley Austin LLP ISBN 1 Sidley Austin LLP (http://www.sidley.com): Sidley is a global law firm, with more than 1800 lawyers in 16 energy projects, as well as representing clients in climate change related litigation. The group

211

Evaluation of yield regulation options for primary forest in Tapajos National Forest, Brazil  

E-Print Network (OSTI)

Evaluation of yield regulation options for primary forest in Tapajo´s National Forest, Brazil PaulJN, Scotland b Instituto do Homem e Meio Ambiente da Amazo^nia (IMAZON), CEP 66060-160 Bele´m, Brazil c Projeto Dendrogene, EMBRAPA, CEP 66095-100 Bele´m, Brazil Received 23 November 2005; received

212

Alpha Renewable Energy | Open Energy Information  

Open Energy Info (EERE)

Renewable Energy Renewable Energy Jump to: navigation, search Name Alpha Renewable Energy Place Atlanta, Georgia Sector Biomass Product Manufacturer of biomass wood gas stoves and standalone power generators for rural areas. References Alpha Renewable Energy[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Alpha Renewable Energy is a company located in Atlanta, Georgia . References ↑ "Alpha Renewable Energy" Retrieved from "http://en.openei.org/w/index.php?title=Alpha_Renewable_Energy&oldid=342033" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes Special pages Printable version Permanent link Browse properties

213

Forests and Climate Change Toolbox | Open Energy Information  

Open Energy Info (EERE)

Forests and Climate Change Toolbox Forests and Climate Change Toolbox Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Forests and Climate Change Toolbox Agency/Company /Organization: Center for International Forestry Research Sector: Land Focus Area: Forestry Topics: Implementation, Policies/deployment programs, Pathways analysis Resource Type: Presentation, Publications Website: www.cifor.cgiar.org/fctoolbox/ Forests and Climate Change Toolbox Screenshot References: CIFOR Toolbox[1] Summary "This Forests and Climate Change Toolbox has been developed to build understanding and technical proficiency on issues of climate change and forests including mitigation, adaptation, carbon accounting and markets, and biofuels." References ↑ "CIFOR Toolbox" Retrieved from

214

Alpha1 and Alpha2 Integrins Mediate Invasive Activity of Mouse Mammary Carcinoma Cells through Regulation of Stromelysin-1 Expression  

Science Conference Proceedings (OSTI)

Tumor cell invasion relies on cell migration and extracellular matrix proteolysis. We investigated the contribution of different integrins to the invasive activity of mouse mammary carcinoma cells. Antibodies against integrin subunits {alpha}6 and {beta}1, but not against {alpha}1 and {alpha}2, inhibited cell locomotion on a reconstituted basement membrane in two-dimensional cell migration assays, whereas antibodies against {beta}1, but not against a6 or {alpha}2, interfered with cell adhesion to basement membrane constituents. Blocking antibodies against {alpha}1 integrins impaired only cell adhesion to type IV collagen. Antibodies against {alpha}1, {alpha}2, {alpha}6, and {beta}1, but not {alpha}5, integrin subunits reduced invasion of a reconstituted basement membrane. Integrins {alpha}1 and {alpha}2, which contributed only marginally to motility and adhesion, regulated proteinase production. Antibodies against {alpha}1 and {alpha}2, but not {alpha}6 and {beta}1, integrin subunits inhibited both transcription and protein expression of the matrix metalloproteinase stromelysin-1. Inhibition of tumor cell invasion by antibodies against {alpha}1 and {alpha}2 was reversed by addition of recombinant stromelysin-1. In contrast, stromelysin-1 could not rescue invasion inhibited by anti-{alpha}6 antibodies. Our data indicate that {alpha}1 and {alpha}2 integrins confer invasive behavior by regulating stromelysin-1 expression, whereas {alpha}6 integrins regulate cell motility. These results provide new insights into the specific functions of integrins during tumor cell invasion.

Lochter, Andre; Navre, Marc; Werb, Zena; Bissell, Mina J

1998-06-29T23:59:59.000Z

215

Poverty and Forests Linkages | Open Energy Information  

Open Energy Info (EERE)

Poverty and Forests Linkages Poverty and Forests Linkages Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Poverty and Forests Linkages Agency/Company /Organization: World Bank Partner: Program on Forests Sector: Land Focus Area: Forestry Topics: Co-benefits assessment, Background analysis Resource Type: Publications, Lessons learned/best practices Website: www.profor.info/profor/Documents/pdf/livelihoods/PovertyForestsLinkage Country: India, Nepal, Papua New Guinea, Guinea, Laos, Tanzania Southern Asia, Southern Asia, Melanesia, Western Africa, South-Eastern Asia, Eastern Africa Coordinates: 28.86°, 81.56° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":28.86,"lon":81.56,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

216

FIRST SPECTROSCOPIC MEASUREMENTS OF [O III] EMISSION FROM Ly{alpha} SELECTED FIELD GALAXIES AT z {approx} 3.1  

SciTech Connect

We present the first spectroscopic measurements of the [O III] 5007 A line in two z {approx} 3.1 Ly{alpha} emitting galaxies (LAEs) using the new near-infrared instrument LUCIFER1 on the 8.4 m Large Binocular Telescope. We also describe the optical imaging and spectroscopic observations used to identify these LAEs. Using the [O III] line we have measured accurate systemic redshifts for these two galaxies, and discovered a velocity offset between the [O III] and Ly{alpha} lines in both, with the Ly{alpha} line peaking 342 and 125 km s{sup -1} redward of the systemic velocity. These velocity offsets imply that there are powerful outflows in high-redshift LAEs. They also ease the transmission of Ly{alpha} photons through the interstellar medium and intergalactic medium around the galaxies. By measuring these offsets directly, we can refine both Ly{alpha}-based tests for reionization, and Ly{alpha} luminosity function measurements where the Ly{alpha} forest affects the blue wing of the line. Our work also provides the first direct constraints on the strength of the [O III] line in high-redshift LAEs. We find [O III] fluxes of 7 and 36 x10{sup -17} erg s{sup -1} cm{sup -2} in two z {approx} 3.1 LAEs. These lines are strong enough to dominate broadband flux measurements that include the line (in this case, K{sub s} -band photometry). Spectral energy distribution fits that do not account for the lines would therefore overestimate the 4000 A (and/or Balmer) break strength in such galaxies, and hence also the ages and stellar masses of such high-z galaxies.

McLinden, Emily M.; Rhoads, James E.; Malhotra, Sangeeta; Hibon, Pascale; Richardson, Mark L. A. [School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287 (United States); Finkelstein, Steven L. [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A and M University, 4242 TAMU, College Station, TX 77843 (United States); Cresci, Giovanni [INAF-Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Firenze (Italy); Quirrenbach, Andreas [ZAH, Landessternwarte, Universitaet Heidelberg, Koenigstuhl 12, D-69117 Heidelberg (Germany); Pasquali, Anna [Max-Planck-Institut fuer Astronomie, Koenigstuhl 17, D-69117 Heidelberg (Germany); Bian Fuyan; Fan Xiaohui [Steward Observatory, The University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Woodward, Charles E. [Department of Astronomy, 351 Tate Laboratory of Physics, 116 Church Street, S. E., University of Minnesota, Minneapolis, MN 55455 (United States)

2011-04-01T23:59:59.000Z

217

Alpha-Particle Condensation in Nuclear Systems  

E-Print Network (OSTI)

The onset of quartetting, i.e. alpha-particle condensation, in symmetric nuclear matter is studied with the help of an in-medium modified four nucleon equation. It is found that at very low density quartetting wins over pairing, because of the strong binding of the alpha-particles. The critical temperature can reach values up to around 6 MeV. Also the disappearance of alpha-particles with increasing density, i.e. the Mott transition, is investigated. In finite nuclei the Hoyle state, that is the 0_2^+ of 12C, is identified as an "alpha-particle condensate" state. It is conjectured that such states also exist in heavier n alpha-nuclei, like 16O, 20Ne, etc. For instance the 6-th 0^+ state of 16O at 15.1 MeV is identified from a theoretical analysis as being a strong candidate for an alpha condensate state. Exploratory calculations are performed for the density dependence of the alpha condensate fraction at zero temperature to address the suppression of the four-particle condensate below nuclear-matter density. Possible quartet condensation in other systems is discussed briefly

Y. Funaki; T. Yamada; H. Horiuchi; G. Röpke; P. Schuck; A. Tohsaki

2008-09-03T23:59:59.000Z

218

Fire is the Enemy of Field and Forest  

NLE Websites -- All DOE Office Websites (Extended Search)

Fire is the Enemy of Field and Forest Fire is the Enemy of Field and Forest Nature Bulletin No. 10 April 14, 1945 Forest Preserve District of Cook County Clayton F. Smith, President Roberts Mann, Superintendent of Conservation FIRE IS THE ENEMY OF FIELD AND FOREST There have been 112 fires in the forest preserves since January 1, burning over 612 acres, including 150 acres of fine woodland and young forest plantings. There need not have been ONE if people only understood the damage done by forest and grass fires. Every spring and every fall, thousands of acres of prairie and vacant subdivisions are burnt off. Some of these fires jump over into forest preserves. Many fires start inside the preserves, or along their highway borders, from matches, cigarettes or pipe bottle thrown aside by careless people. Some start from picnic fires. A few are kindled by boys who have seen their parents or neighbors do the same thing at home.

219

Rethinking Forest Partnerships and Benefit Sharing | Open Energy  

Open Energy Info (EERE)

Rethinking Forest Partnerships and Benefit Sharing Rethinking Forest Partnerships and Benefit Sharing Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Rethinking Forest Partnerships and Benefit Sharing Agency/Company /Organization: World Bank Partner: Program on Forests Sector: Land Focus Area: Forestry Topics: Implementation, Resource assessment Resource Type: Lessons learned/best practices Website: www.profor.info/profor/sites/profor.info/files/Benefit_Sharing_WEB.pdf Rethinking Forest Partnerships and Benefit Sharing Screenshot References: Rethinking Forest Partnerships and Benefit Sharing[1] "This study uses an evidence-based approach to provide insights into developing and maintaining collaborative arrangements in the forest sector. It aims to inform discussions and approaches to forest partnership and

220

Indonesia-US Forest Service Climate Change Technical Cooperation | Open  

Open Energy Info (EERE)

Climate Change Technical Cooperation Climate Change Technical Cooperation Jump to: navigation, search Name Indonesia-US Forest Service Climate Change Technical Cooperation Agency/Company /Organization United States Forest Service Sector Land Focus Area Forestry Topics Background analysis Website http://www.fs.fed.us/global/to Country Indonesia South-Eastern Asia References US Forest Service Climate Change Technical Cooperation[1] "In Indonesia, the US Forest Service has a new partnership with the Indonesian Ministry of Forests aimed at improving forest governance by strengthening ties between field operations and headquarters in order to manage and conserve forests on a landscape-scale. " References ↑ "US Forest Service Climate Change Technical Cooperation" Retrieved from

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Sublimation of Snow from Coniferous Forests in a Climate Model  

Science Conference Proceedings (OSTI)

Improved representations of snow interception by coniferous forest canopies and sublimation of intercepted snow are implemented in a land surface model. Driven with meteorological observations from forested sites in Canada, the United States, and ...

Richard Essery; John Pomeroy; Jason Parviainen; Pascal Storck

2003-06-01T23:59:59.000Z

222

Sensitivity of Boreal Forest Carbon Balance to Soil Thaw  

E-Print Network (OSTI)

100 km of Thompson, Manitoba, that ranged in age since theblack spruce forest in Manitoba, Canada. The site lost 0.3 ?black spruce forest in Manitoba, Canada, from 1994 to 1997 (

1998-01-01T23:59:59.000Z

223

Physiological responses of a black spruce forest to weather  

E-Print Network (OSTI)

in Saskatche- wan and Manitoba, Canada, J. Geophys. Res. ,Picea mariana) forest in Manitoba for 16,500 hours fromana (Mill. ) BSP) forest in Manitoba from March 1994 to Oc-

1997-01-01T23:59:59.000Z

224

SNOWMIP2: An Evaluation of Forest Snow Process Simulations  

Science Conference Proceedings (OSTI)

The Northern Hemisphere has large areas that are forested and seasonally snow covered. Compared with open areas, forest canopies strongly influence interactions between the atmosphere and snow on the ground by sheltering the snow from wind and ...

Richard Essery; Nick Rutter; John Pomeroy; Robert Baxter; Manfred Stähli; David Gustafsson; Alan Barr; Paul Bartlett; Kelly Elder

2009-08-01T23:59:59.000Z

225

Tropical forest soil microbial communities couple iron and carbon biogeochemistry  

E-Print Network (OSTI)

Luquillo mountains, Puerto Rico: I. Long-term versus short-Forest, Commonwealth of Puerto Rico. US Department ofLuquillo Mountains of Puerto Rico. U.S.D.A. Forest Service

Dubinsky, E.A.

2010-01-01T23:59:59.000Z

226

Comments on Measuring Turbulent Exchange Within and Above Forest Canopy  

Science Conference Proceedings (OSTI)

Actual problems of measuring the turbulent exchange in and above forests (e.g., site requirements of micrormeteorological observations, aerodynamic characteristics of forests, observations of the crown-produced mixing layer, flux-profile ...

Stanislaw J. Tajchman

1981-11-01T23:59:59.000Z

227

An old-growth forest on the Oak Ridge Reservation  

NLE Websites -- All DOE Office Websites (Extended Search)

An Old-Growth Forest on the Oak Ridge Reservation Old-growth forests are increasingly rare around the globe. One occurs in the Oak Ridge National Environmental Research Park on the...

228

Liberia-US Forest Service Climate Change Technical Cooperation | Open  

Open Energy Info (EERE)

US Forest Service Climate Change Technical Cooperation US Forest Service Climate Change Technical Cooperation Jump to: navigation, search Name Liberia-US Forest Service Climate Change Technical Cooperation Agency/Company /Organization United States Forest Service Sector Land Focus Area Forestry Topics Background analysis Website http://www.fs.fed.us/global/to Country Liberia Western Africa References US Forest Service Climate Change Technical Cooperation[1] "Liberia contains over 40% of the remaining closed canopy rainforest in West Africa, a sizeable carbon sink. The Forest Service works with the Government of Liberia to reorganize its forest service and forestry sector in the post-conflict era. The US Forest Service helped develop a chain of custody system for tracking timber and a financial management

229

Alpha Energy formerly Altair Energy | Open Energy Information  

Open Energy Info (EERE)

Washington State . References "Alpha Energy (formerly Altair Energy)" Retrieved from "http:en.openei.orgwindex.php?titleAlphaEnergyformerlyAltairEnergy&oldid342032...

230

REDD+ In Dryland Forests | Open Energy Information  

Open Energy Info (EERE)

Dryland Forests Dryland Forests Jump to: navigation, search Name REDD+ In Dryland Forests: Issues and Prospects for Pro-poor REDD in the Miombo Woodlands of Southern Africa Agency/Company /Organization United Nations Development Programme, United Nations Environment Programme, Food and Agriculture Organization of the United Nations Sector Land Focus Area Forestry Topics Policies/deployment programs, Background analysis Resource Type Publications, Lessons learned/best practices Website http://www.iied.org/pubs/pdfs/ Country Namibia, Zambia, Mozambique UN Region "Sub-Saharan Africa" is not in the list of possible values (Eastern Africa, Middle Africa, Northern Africa, Southern Africa, Western Africa, Caribbean, Central America, South America, Northern America, Central Asia, Eastern Asia, Southern Asia, South-Eastern Asia, Western Asia, Eastern Europe, Northern Europe, Southern Europe, Western Europe, Australia and New Zealand, Melanesia, Micronesia, Polynesia, Latin America and the Caribbean) for this property.

231

How Communities Manage Forests | Open Energy Information  

Open Energy Info (EERE)

How Communities Manage Forests How Communities Manage Forests Jump to: navigation, search Tool Summary LAUNCH TOOL Name: How Communities Manage Forests Agency/Company /Organization: FORZA Sector: Land Focus Area: Forestry Topics: Background analysis Resource Type: Lessons learned/best practices Website: www.rightsandresources.org/documents/files/doc_1687.pdf Country: Bhutan, Bulgaria, Nepal, Kyrgyzstan, United Kingdom, Slovenia, Switzerland, Vietnam UN Region: Central Asia, South-Eastern Asia, "Western & Eastern Europe" is not in the list of possible values (Eastern Africa, Middle Africa, Northern Africa, Southern Africa, Western Africa, Caribbean, Central America, South America, Northern America, Central Asia, Eastern Asia, Southern Asia, South-Eastern Asia, Western Asia, Eastern Europe, Northern Europe, Southern Europe, Western Europe, Australia and New Zealand, Melanesia, Micronesia, Polynesia, Latin America and the Caribbean) for this property.

232

NPP Tropical Forest: Khao Chong, Thailand  

NLE Websites -- All DOE Office Websites (Extended Search)

Khao Chong, Thailand, 1962-1965 Khao Chong, Thailand, 1962-1965 [PHOTOGRAPH] Photograph: Eye-level view of forest interior at Khao Chong (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Kira, T. 1998. NPP Tropical Forest: Khao Chong, Thailand, 1962-1965. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a tropical rain forest was determined at the Khao Chong study site, under the auspices of the Joint Thai-Japanese Biological Expedition to South-East Asia. Biomass increment within a 40 m x 40 m study area for all trees greater than 4.5 cm dbh (diameter at breast height, 130 cm) was monitored between

233

Forest fire near Los Alamos National Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

Forest fire near Los Alamos National Laboratory Forest fire near Los Alamos National Laboratory Forest fire near Los Alamos National Laboratory The Las Conchas fire burning in the Jemez Mountains approximately 12 miles southwest of the boundary of LANL has not entered Lab property at this time. June 26, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

234

Climate VISION: Private Sector Initiatives: Forest Products  

Office of Scientific and Technical Information (OSTI)

Letters of Intent/Agreements Letters of Intent/Agreements American Forest & Paper Association Logo The American Forest & Paper Association (AF&PA) supports the Climate VISION initiative to address climate change through enhanced research in technology and science, incentives, and voluntary efforts from all sectors of the American economy. The members of AF&PA have undertaken a series of programs through which they are collectively committed to meeting the President's intensity reduction goals. These programs include inventorying and reporting on greenhouse gases, actions to enhance sequestration in managed forests and products, development and implementation of improved technologies, efforts to improve energy efficiency, use of cogeneration and increased use of renewable energy, and recycling. AF&PA expects that these programs will

235

NPP Tropical Forest: Marafunga, Papua New Guinea  

NLE Websites -- All DOE Office Websites (Extended Search)

Marafunga, Papua New Guinea, 1970-1971 Marafunga, Papua New Guinea, 1970-1971 [PHOTOGRAPH] Photograph: Profile of tropical forest at Marafunga (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Edwards, P. J., and P. J. Grubb. 1999. NPP Tropical Forest: Marafunga, Papua New Guinea, 1970-1971. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and nutrient content of different vegetation components and soil for a lower montane secondary rain forest were determined in 1970-71 at Marafunga in the highlands of Papua New Guinea. The only component of net primary production (NPP) determined at Marafunga was litterfall, although

236

NPP Tropical Forest: Magdalena Valley, Colombia  

NLE Websites -- All DOE Office Websites (Extended Search)

Magdalena Valley, Colombia, 1970-1971 Magdalena Valley, Colombia, 1970-1971 Data Citation Cite this data set as follows: Folster, H. 1999. NPP Tropical Forest: Magdalena Valley, Colombia, 1970-1971. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass, litterfall, and nutrient content of above-ground vegetation and soil were determined for a tropical seasonal evergreen forest at Magdalena Valley, Colombia, during an 18-month period in 1970 and 1971. The study was sponsored by the German Research Foundation. Of primary interest were biomass and nutrient dynamics of a forest stand that had developed atop a perched water table on a typical valley terrace. Perched water tables give rise to pseudogley soils with low pH, prolonged

237

Remotely sensed heat anomalies linked with Amazonian forest biomass declines  

E-Print Network (OSTI)

with Amazonian forest biomass declines Michael Toomey, 1 Darof aboveground living biomass (p biomass declines, Geophys. Res.

Toomey, M.; Roberts, D. A.; Still, C.; Goulden, M. L.; McFadden, J. P.

2011-01-01T23:59:59.000Z

238

Critical Nanotechnology Needs in the Forest Products Industry ...  

Science Conference Proceedings (OSTI)

... in the Forest Products Industry White Paper ... allow substitution of sustainable light weight materials ... wood based composites, paper and paperboard ...

2011-08-02T23:59:59.000Z

239

Front Range Forest Health Partnership Phase 1 feasibility study  

DOE Green Energy (OSTI)

The Front Range Forest Health Partnership is an alliance of individuals, citizen groups, federal, state, private, and nonprofit organizations that formed to promote forest health restoration and reduce fire risks on Colorado's Front Range. The partnership promotes selective thinning to restore forest health and supports economically feasible end uses for wood waste materials. The Phase I study was initiated to determine the environmental and economic feasibility of using wood wastes from forested and urban areas for the production of fuel-grade ethanol.

Volkin, P

1998-09-01T23:59:59.000Z

240

Development of Forest Structure and Leaf Area in Secondary Forests Regenerating on Abandoned Pastures in Central Amazônia  

Science Conference Proceedings (OSTI)

The area of secondary forest (SF) regenerating from pastures is increasing in the Amazon basin; however, the return of forest and canopy structure following abandonment is not well understood. This study examined the development of leaf area ...

Ted R. Feldpausch; Susan J. Riha; Erick C. M. Fernandes; Elisa V. Wandelli

2005-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

EAST TEXAS FOREST INVENTORY (ETFI) PILOT PROJECT REMOTE SENSING PHASE  

E-Print Network (OSTI)

EAST TEXAS FOREST INVENTORY (ETFI) PILOT PROJECT REMOTE SENSING PHASE Dr. Daniel R. Unger, Remote Resources Institute Arthur Temple College of Forestry Stephen F. Austin State University Nacogdoches, Texas the forest resources of East Texas based on the premise that the quantification and qualification of forest

Hung, I-Kuai

242

Changing Climate, Changing Forests: The Impacts of Climate Change on  

E-Print Network (OSTI)

is a science and policy program director with Harvard Forest, in Petersham, MA. JACQUELINE MOHAN Orwig, Harvard Forest, Harvard University, Petersham, MA Daniel Parry, SUNY-College of Environmental Stinson, Harvard Forest, Harvard University, Petersham, MA Kathleen A. Theoharides, Defenders of Wildlife

243

A companion modelling approach applied to forest management planning  

Science Conference Proceedings (OSTI)

To assist the Societe Civile des Terres du Larzac (SCTL) in its effort to develop alternative forest management plans, a group of researchers and extension officers proposed applying a companion modelling approach. The objective was to support forest ... Keywords: Companion modelling, Forest management, Livestock farming, Multi-agent system, Participatory modelling

C. Simon; M. Etienne

2010-11-01T23:59:59.000Z

244

Nuclear diagnostic for fast alpha particles  

DOE Patents (OSTI)

This invention relates generally to high energy confined plasmas and more particularly is directed to measuring the velocity distribution of confined energetic alpha particles resulting from deuterium-tritium fusion reactions in a confined energetic plasma.

Grisham, L.R.; Post, D.E. Jr.; Dawson, J.M.

1983-11-23T23:59:59.000Z

245

Measurements of alpha_s from hadronic event shapes in e+e- annihilation  

E-Print Network (OSTI)

New studies of hadronic event shape observables in e+ e- collisions between 13 and 183 GeV CM energy have enabled the running of alpha_s to be confirmed and the validity of non-perturbative power-law corrections to be investigated. A more precise value of alpha_s(M_Z) with reduced theoretical errors has been reported from fitting 18 oriented event shape distributions measured in one experiment at the Z.

J. C. Thompson

1998-12-02T23:59:59.000Z

246

Methods for the synthesis and polymerization of .alpha.,.alpha.'-dihalo-p-xylenes  

DOE Patents (OSTI)

The present invention describes an improved method for the polymerization of .alpha.,.alpha.-dihalo-p-xylene's such as the .alpha.,.alpha.'-dihalo-2-methoxy-5-(2-ethylhexyloxy)-xylene's. The procedure for synthesis is based on the specific order of addition of reagents and the use of an anionic initiator that allows control of the molecular weight of the polymer. The molecular weight control allows processability of the polymer which is important for its utility in applications including in light-emitting-diodes, field effect transistors and photovoltaic devices.

Ferraris, John P. (Coppell, TX); Neef, Charles J. (Garland, TX)

2002-07-30T23:59:59.000Z

247

Production, prices, employment, and trade in northwest forest industries, fourth quarter 1992. Forest Service resource bulletin  

Science Conference Proceedings (OSTI)

The report provides current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1993-07-01T23:59:59.000Z

248

Production, prices, employment, and trade in northwest forest industries, second quarter 1994. Forest Service resource bulletin  

Science Conference Proceedings (OSTI)

The report provides current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood, volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1995-01-01T23:59:59.000Z

249

Production, prices, employment and trade in northwest forest industries, second quarter 1996. Forest Service resource bulletin  

Science Conference Proceedings (OSTI)

The report provides current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1996-11-01T23:59:59.000Z

250

Production, prices, employment, and trade in northwest forest industries, third quarter 1992. Forest Service resource bulletin  

SciTech Connect

The report includes current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1993-03-01T23:59:59.000Z

251

Production, prices, employment, and trade in northwest forest industries, second quarter 1995. Forest Service resource bulletin  

Science Conference Proceedings (OSTI)

Provides current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1996-01-01T23:59:59.000Z

252

Production, prices, employment, and trade in northwest forest industries, first quarter 1994. Forest Service resource bulletin  

Science Conference Proceedings (OSTI)

The report provides current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood, volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1994-11-01T23:59:59.000Z

253

Production, prices, employment, and trade in northwest forest industries, first quarter 1995. Forest Service resource bulletin  

SciTech Connect

Provides current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood, volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1995-09-01T23:59:59.000Z

254

Production, prices, employment, and trade in northwest forest industries, second quarter 1993. Forest Service resource bulletin  

Science Conference Proceedings (OSTI)

The report includes current information on lumber and plywood production and prices, employment in the forest industries; international trade in logs, lumber and plywood; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1994-01-01T23:59:59.000Z

255

Production, prices, employment, and trade in northwest forest industries, first quarter 1996. Forest Service resource bulletin  

Science Conference Proceedings (OSTI)

Provides current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood, volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1996-07-01T23:59:59.000Z

256

Production, prices, employment, and trade in northwest forest industries, fourth quarter 1996. Forest Service resource bulletin  

Science Conference Proceedings (OSTI)

Provides current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1997-07-01T23:59:59.000Z

257

Production, prices, employment, and trade in northwest forest industries, second quarter 1992. Forest Service resource bulletin  

Science Conference Proceedings (OSTI)

The report provides current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1992-01-01T23:59:59.000Z

258

Production, prices, employment, and trade in northwest forest industries, second quarter 1997. Forest Service resource bulletin  

Science Conference Proceedings (OSTI)

Provides current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1998-03-01T23:59:59.000Z

259

Production, prices, employment, and trade in northwest forest industries, fourth quarter 1993. Forest Service resource bulletin  

SciTech Connect

The report includes current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood, volume and average prices in stumpage sold by public agencies; and other related items.

Warren, D.D.

1994-05-01T23:59:59.000Z

260

Production, prices, employment, and trade in northwest forest industries, third quarter 1996. Forest Service resource bulletin  

Science Conference Proceedings (OSTI)

Provides current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1997-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Production, prices, employment, and trade in northwest forest industries, first quarter 1993. Forest Service resource bulletin  

Science Conference Proceedings (OSTI)

The report includes current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1993-11-01T23:59:59.000Z

262

Guidelines on local European forest energy  

E-Print Network (OSTI)

to 30% if the US, China and India make similar commitments) · 20% for renewable energy sources (compared-European: MCPFE ­EU: Forest Action Plan, Rural Development Policy, Renewable Energy Policy EU Renewable Energy · 20% for renewable energy sources · 10% for the share of biofuels consumption B. Sectoral problems

Pettenella, Davide

263

Forest Carbon Seminars SUTROFOR 2010-2011  

E-Print Network (OSTI)

); · Forest Management (FM); · Fossil fuel substitution (Bioenergy / biofuels); · Reducing Emissions from / biofuels) · Increasing CO2 stock in off-site wood products (CHWP); · Reducing Emissions from Deforestation;Retailers/wholesalers/broker/aggregators (1/2) http://www.carbonneutral.com/ Retailers/wholesalers

Pettenella, Davide

264

Amazon Forest Radiation Budget from Satellite Data  

Science Conference Proceedings (OSTI)

The top-of-the-atmosphere net radiation is determined over the Ducke Reserve Forest site, Manaus, Brazil (2°57 S, 59°57 W), from GOES-7 visible and infrared data during the 1987 wet season (April?May), for 0900 and 1500 LST. It is shown that a ...

J-C. Calvet; Y. Viswanadham

1993-05-01T23:59:59.000Z

265

nomyecoGREEN y Forests in a  

E-Print Network (OSTI)

% recycled paper, using vegetable -based inks and other eco-friendly practices. Our distribution policy aims to reduce UNEP's carbon footprint. Copyright © United Nations Environment Programme, May 2011 Photo credit. Opportunities and roles for financial institutions in forest carbon markets. United Nations Environment

266

Costing forest residue recovery through simulation  

Science Conference Proceedings (OSTI)

The search for alternative energy sources has renewed interest in the energy potential of wood. Supplies of wood residue seem to be a likely source of material and the greatest volumes of residue are located in the forest. Methods are needed to more ...

Leonard R. Johnson; Edward L. Fisher

1978-12-01T23:59:59.000Z

267

Sustainability the forest and paper industry  

E-Print Network (OSTI)

competitive with affordable products produced on a renewable basis. · provides millions of jobs and supports communities through the creation of thousands of small and large companies and millions of jobs, primarily into a renewable woody biomass. Once consumed and collected separately, many forest and paper products start a new

268

Scotland's Forest Industries 1. Foreword 01  

E-Print Network (OSTI)

that used wood pellets for fuel, and a combined heat and power plant that used waste and wood fuels. After potential of wood products in Sweden, the technologies for harvesting are quite underdeveloped throughout, and touring Umeå's new CPH facility, which is powered primarily by forest residues. Topics of discussion

269

TEXAS FOREST SERVICE TFS SINGLE ENGINE AIRTANKER  

E-Print Network (OSTI)

and runs east covering all of the states to the Atlantic Ocean. Vl. PARTICIPATING AGENCIES: The federal and state agencies participating in Texas using this SEAT operating plan are: USDA Forest Service, USDI of state and federal agencies with different missions, goals and objectives for managing their natural

270

Forest County Potawatomi Tribe Cuts Emissions, Promotes Green Growth |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Forest County Potawatomi Tribe Cuts Emissions, Promotes Green Forest County Potawatomi Tribe Cuts Emissions, Promotes Green Growth Forest County Potawatomi Tribe Cuts Emissions, Promotes Green Growth February 23, 2012 - 6:29pm Addthis The Forest County Potawatomi Tribe's solar system is providing heating, cooling, and electricity to the Tribe's administration building in Milwaukee, Wisconsin. Photo from the Forest County Potawatomi Tribe. The Forest County Potawatomi Tribe's solar system is providing heating, cooling, and electricity to the Tribe's administration building in Milwaukee, Wisconsin. Photo from the Forest County Potawatomi Tribe. Project Benefits Produce approximately 35,000 kilowatt-hours of clean electricity annually Reduce carbon dioxide emissions by an estimated 41 tons per year Preserve and increase local jobs for tribal members and others

271

Developing Effective Forest Policy-A Guide | Open Energy Information  

Open Energy Info (EERE)

Developing Effective Forest Policy-A Guide Developing Effective Forest Policy-A Guide Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Developing Effective Forest Policy-A Guide Agency/Company /Organization: Food and Agriculture Organization of the United Nations Sector: Land Focus Area: Forestry Topics: Policies/deployment programs Resource Type: Guide/manual Website: www.fao.org/docrep/013/i1679e/i1679e00.pdf References: Developing Effective Forest Policy[1] Purpose "The purpose of this guide is to outline the concepts associated with forest policy development and the formulation of a formal forest policy statement, based on country experiences in recent decades. While focusing on the development and formulation of national forest policies, the guide can also be applied at subnational and local levels. Similarly, it can

272

WRI-The Governance of Forests Toolkit | Open Energy Information  

Open Energy Info (EERE)

WRI-The Governance of Forests Toolkit WRI-The Governance of Forests Toolkit Jump to: navigation, search Tool Summary LAUNCH TOOL Name: WRI-The Governance of Forests Toolkit Agency/Company /Organization: World Resources Institute Sector: Land, Climate Focus Area: Forestry Resource Type: Publications Website: pdf.wri.org/working_papers/gfi_tenure_indicators_sep09.pdf Cost: Free WRI-The Governance of Forests Toolkit Screenshot References: WRI-The Governance of Forests Toolkit[1] "The Governance of Forests Initiative (GFI) seeks to bring widely accepted principles of good governance to bear on the challenges of sustaining forests in developing countries. GFI is a collaboration of the World Resources Institute, Imazon (Brazil) and the Instituto Centro de Vida (Brazil). This document presents the GFI Toolkit (Version 1) and outlines a process

273

Alpha Channeling in Rotating Plasma with Stationary Waves  

SciTech Connect

An extension of the alpha channeling effect to supersonically rotating mirrors shows that the rotation itself can be driven using alpha particle energy. Alpha channeling uses radiofrequency waves to remove alpha particles collisionlessly at low energy. We show that stationary magnetic fields with high n? can be used for this purpose, and simulations show that a large fraction of the alpha energy can be converted to rotation energy.

A. Fetterman and N.J. Fisch

2010-02-15T23:59:59.000Z

274

Review on the determination of alpha_s from the QCD static energy  

E-Print Network (OSTI)

We review the determination of the strong coupling alpha_s from the comparison of the perturbative expression for the Quantum Chromodynamics static energy with lattice data. We collect here all the perturbative expressions needed to evaluate the static energy at the currently known accuracy.

Tormo, Xavier Garcia i

2013-01-01T23:59:59.000Z

275

ALPHA ATTENUATION DUE TO DUST LOADING  

SciTech Connect

Previous studies had been done in order to show the attenuation of alpha particles in filter media. These studies provided an accurate correction for this attenuation, but there had not yet been a study with sufficient results to properly correct for attenuation due to dust loading on the filters. At the Savannah River Site, filter samples are corrected for attenuation due to dust loading at 20%. Depending on the facility the filter comes from and the duration of the sampling period, the proper correction factor may vary. The objective of this study was to determine self-absorption curves for each of three counting instruments. Prior work indicated significant decreases in alpha count rate (as much as 38%) due to dust loading, especially on filters from facilities where sampling takes place over long intervals. The alpha count rate decreased because of a decrease in the energy of the alpha. The study performed resulted in a set of alpha absorption curves for each of three detectors. This study also took into account the affects of the geometry differences in the different counting equipment used.

Dailey, A; Dennis Hadlock, D

2007-08-09T23:59:59.000Z

276

Alpha decay favoured isotopes of some superheavy nuclei: Spontaneous fission versus alpha decay  

E-Print Network (OSTI)

Spontaneous fission and alpha decay are the main decay modes for superheavy nuclei. The superheavy nuclei which have small alpha decay half-life compared to spontaneous fission half-life will survive fission and can be detected in the laboratory through alpha decay. We have studied the alpha decay half-life and spontaneous half-life of some superheavy elements in the atomic range Z = 100-130. Spontaneous fission half-lives of superheavy nuclei have been calculated using the phenomenological formula and the alpha decay half-lives using Viola-Seaborg-Sobiczewski formula (Sobiczewski et al. 1989), semi empirical relation of Brown (1992) and formula based on generalized liquid drop model proposed by Dasgupta-Schubert and Reyes (2007). The results are reported here.

O. V. Kiren; S. B. Gudennavar; S. G. Bubbly

2013-01-09T23:59:59.000Z

277

Extrapolating leaf CO2 exchange to the canopy: a generalized model of forest photosynthesis compared with measurements by eddy correlation  

E-Print Network (OSTI)

at the Harvard Forest, Petersham, collected tech-Harvard Forest office, Petersham, Massachusetts. These dataat the Harvard Forest, Petersham, MA. Ecol Appi (in press)

Aber, John D.; Reich, Peter B.; Goulden, Michael L.

1996-01-01T23:59:59.000Z

278

AlphaWatt Ltd | Open Energy Information  

Open Energy Info (EERE)

AlphaWatt Ltd AlphaWatt Ltd Jump to: navigation, search Name AlphaWatt Ltd Place London, United Kingdom Zip EC1V 4PY Sector Solar Product Solar project developer, plans to become an independent power provider. Coordinates 51.506325°, -0.127144° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":51.506325,"lon":-0.127144,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

279

Nuclear diagnostic for fast alpha particles  

DOE Patents (OSTI)

Measurement of the velocity distribution of confined energetic alpha particles resulting from deuterium-tritium fusion reactions in a magnetically contained plasma is provided. The fusion plasma is seeded with energetic boron neutrals for producing, by means of the reaction .sup.10 B (.alpha.,n) .sup.13 N reaction, radioactive nitrogen nuclei which are then collected by a probe. The radioactivity of the probe is then measured by conventional techniques in determining the energy distribution of the alpha particles in the plasma. In a preferred embodiment, diborane gas (B.sub.2 H.sub.6) is the source of the boron neutrals to produce .sup.13 N which decays almost exclusively by positron emission with a convenient half-life of 10 minutes.

Grisham, Larry R. (Lawrence Township, Mercer County, NJ); Post, Jr., Douglass E. (Belle Mead, NJ); Dawson, John M. (Pacific Palisades, CA)

1986-01-01T23:59:59.000Z

280

Alternating current long range alpha particle detector  

DOE Patents (OSTI)

An alpha particle detector, utilizing alternating currents, which is capable of detecting alpha particles from distinct sources. The use of alternating currents allows use of simpler ac circuits which, in turn, are not susceptible to dc error components. It also allows the benefit of gas gain, if desired. In the invention, a voltage source creates an electric field between two conductive grids, and between the grids and a conductive enclosure. Air containing air ions created by collision with alpha particles is drawn into the enclosure and detected. In some embodiments, the air flow into the enclosure is interrupted, creating an alternating flow of ions. In another embodiment, a modulated voltage is applied to the grid, also modulating the detection of ions.

MacArthur, D.W.; McAtee, J.L.

1993-02-16T23:59:59.000Z

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Fan-less long range alpha detector  

DOE Patents (OSTI)

A fan-less long range alpha detector which operates by using an electrical field between a signal plane and the surface or substance to be monitored for air ions created by collisions with alpha radiation. Without a fan, the detector can operate without the possibility of spreading dust and potential contamination into the atmosphere. A guard plane between the signal plane and the electrically conductive enclosure and maintained at the same voltage as the signal plane, reduces leakage currents. The detector can easily monitor soil, or other solid or liquid surfaces.

MacArthur, Duncan W. (Los Alamos, NM); Bounds, John A. (Los Alamos, NM)

1994-01-01T23:59:59.000Z

282

Fan-less long range alpha detector  

DOE Patents (OSTI)

A fan-less long range alpha detector is disclosed which operates by using an electrical field between a signal plane and the surface or substance to be monitored for air ions created by collisions with alpha radiation. Without a fan, the detector can operate without the possibility of spreading dust and potential contamination into the atmosphere. A guard plane between the signal plane and the electrically conductive enclosure and maintained at the same voltage as the signal plane, reduces leakage currents. The detector can easily monitor soil, or other solid or liquid surfaces. 2 figures.

MacArthur, D.W.; Bounds, J.A.

1994-05-10T23:59:59.000Z

283

United States Forest Service | Open Energy Information  

Open Energy Info (EERE)

Logo: United States Forest Service Name United States Forest Service Short Name USFS Address 1400 Independence Ave., SW Place Washington, D.C. Zip 20250-1111 Year founded 1905 Website http://www.fs.fed.us/ Coordinates 38.887546°, -77.032038° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.887546,"lon":-77.032038,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

284

United States Forest Service | Open Energy Information  

Open Energy Info (EERE)

Service Service (Redirected from USFS) Jump to: navigation, search Logo: United States Forest Service Name United States Forest Service Short Name USFS Address 1400 Independence Ave., SW Place Washington, D.C. Zip 20250-1111 Year founded 1905 Website http://www.fs.fed.us/ Coordinates 38.887546°, -77.032038° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.887546,"lon":-77.032038,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

285

State of the Forest Carbon Markets 2009 | Open Energy Information  

Open Energy Info (EERE)

State of the Forest Carbon Markets 2009 State of the Forest Carbon Markets 2009 Jump to: navigation, search Tool Summary LAUNCH TOOL Name: State of the Forest Carbon Markets 2009 Agency/Company /Organization: Forest Trends Sector: Land Focus Area: Forestry Topics: Market analysis Resource Type: Publications Website: moderncms.ecosystemmarketplace.com/repository/moderncms_documents/SFCM State of the Forest Carbon Markets 2009 Screenshot References: State of the Forest Carbon Markets 2009[1] Overview "This report was created to increase transparency and answer fundamental questions about the supply of forestry-based carbon credits, such as transaction volumes, credit prices, hectares influenced and tenure rights. It outlines the aggregate numbers from our survey of 61 project developers1

286

Brazil-Forest Investment Program (FIP) | Open Energy Information  

Open Energy Info (EERE)

Brazil-Forest Investment Program (FIP) Brazil-Forest Investment Program (FIP) Jump to: navigation, search Name Brazil-Forest Investment Program (FIP) Agency/Company /Organization World Bank Sector Land Topics Background analysis, Finance, Implementation, Low emission development planning, Market analysis Website http://www.climatefundsupdate. Program Start 2008 Country Brazil South America References Forest Investment Program (FIP)[1] Forest Investment Program[2] Brazil Specific Documents[3] Democratic Republic of Congo Specific Documents[4] Ghana Specific Documents[5] Indonesia Specific Documents[6] Laos Specific Documents[7] Mexico Specific Documents[8] Peru Specific Documents[9] Overview "The Forest Investment Program (FIP) is a targeted program of the Strategic Climate Fund (SCF), which is one of two funds within the framework of the

287

USFS Humboldt-Toiyabe National Forest | Open Energy Information  

Open Energy Info (EERE)

USFS Humboldt-Toiyabe National Forest USFS Humboldt-Toiyabe National Forest Jump to: navigation, search Name USFS Humboldt-Toiyabe National Forest Short Name Humbolt-Toiyabe NF Parent Organization United States Forest Service Address 1200 Franklin Way Place Sparks, NV Zip 89431 Phone number (775) 331-6444 Website http://www.fs.usda.gov/main/ht References Humboldt-Toiyabe NF Website[1] This article is a stub. You can help OpenEI by expanding it. USFS Toiyabe National Forest is an organization based in Sparks, Nevada, Sparks, Nevada. References ↑ "Humboldt-Toiyabe NF Website" Retrieved from "http://en.openei.org/w/index.php?title=USFS_Humboldt-Toiyabe_National_Forest&oldid=640692" Categories: Government Agencies Stubs What links here Related changes Special pages Printable version

288

UNDP/GEF-Cambodia-Sustainable Forest Management | Open Energy Information  

Open Energy Info (EERE)

UNDP/GEF-Cambodia-Sustainable Forest Management UNDP/GEF-Cambodia-Sustainable Forest Management Jump to: navigation, search Logo: UNDP/GEF-Cambodia-Sustainable Forest Management Name UNDP/GEF-Cambodia-Sustainable Forest Management Agency/Company /Organization United Nations Development Programme, Global Environment Facility Sector Land Focus Area Forestry Website http://www.un.org.kh/undp/pres Program Start 2011 Country Cambodia UN Region South-Eastern Asia References UNDP Cambodia: Environment and Energy [1] UNDP/GEF-Cambodia-Sustainable Forest Management Screenshot "UNDP and Global Environment Facility on Monday launched a new project worth over US$3.8 million to help Cambodia preserve its forests to benefit the rural poor as well as to contribute to reducing emission of green house gases into atmosphere.

289

Rising global temperatures accelerate drought-induced forest mortality  

NLE Websites -- All DOE Office Websites (Extended Search)

Drought-induced forest mortality Drought-induced forest mortality Rising global temperatures accelerate drought-induced forest mortality Many southwestern forests in the United States will disappear or be heavily altered by 2050, according to a series of joint LANL-UNM studies. July 10, 2013 Piñon trees show increased susceptibility to drought when also subjected to rising temperatures. Piñon trees show increased susceptibility to drought when also subjected to rising temperatures. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "Everybody knows trees die when there's a drought, if there's bark beetles or fire, yet nobody in the world can predict it with much accuracy." Research has dire global implications for forests LOS ALAMOS, N. M., July 10, 2013- Many southwestern forests in the United

290

Rising global temperatures accelerate drought-induced forest mortality  

NLE Websites -- All DOE Office Websites (Extended Search)

Drought-induced forest mortality Drought-induced forest mortality Rising global temperatures accelerate drought-induced forest mortality Many southwestern forests in the United States will disappear or be heavily altered by 2050, according to a series of joint LANL-UNM studies. July 10, 2013 Piñon trees show increased susceptibility to drought when also subjected to rising temperatures. Piñon trees show increased susceptibility to drought when also subjected to rising temperatures. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "Everybody knows trees die when there's a drought, if there's bark beetles or fire, yet nobody in the world can predict it with much accuracy." Research has dire global implications for forests LOS ALAMOS, N. M., July 10, 2013- Many southwestern forests in the United

291

Forest City High School Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Farm Farm Jump to: navigation, search Name Forest City High School Wind Farm Facility Forest City High School Sector Wind energy Facility Type Community Wind Facility Status In Service Owner Forest City High School Developer Forest City High School Energy Purchaser Forest City Community School District Location Forest City IA Coordinates 43.266011°, -93.653378° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.266011,"lon":-93.653378,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

292

Forest County Potawatomi Community Project | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Forest County Potawatomi Community Project Forest County Potawatomi Community Project Forest County Potawatomi Community Project November 13, 2013 - 10:45am Addthis The Forest County Potawatomi Community, a federally recognized tribe with its reservation in Forest County, Wisconsin, and with trust lands in Milwaukee, Wisconsin, is implementing an integrated renewable energy deployment plan that will provide electricity for the Tribe's government buildings. The U.S. Department of Energy provided $2.6 million in funding for this Community Renewable Energy Deployment (CommRE) project. Biogas Generation Facility The Forest County Potawatomi CommRE project will include installation of a biogas generation plant on Tribe-owned land in Milwaukee County. The digesters associated with the biogas cogeneration plant will utilize a

293

Mexico-Forest Investment Program (FIP) | Open Energy Information  

Open Energy Info (EERE)

Mexico-Forest Investment Program (FIP) Mexico-Forest Investment Program (FIP) Jump to: navigation, search Name Mexico-Forest Investment Program (FIP) Agency/Company /Organization World Bank Sector Land Topics Background analysis, Finance, Implementation, Low emission development planning, Market analysis Website http://www.climatefundsupdate. Program Start 2008 Country Mexico Central America References Forest Investment Program (FIP)[1] Forest Investment Program[2] Brazil Specific Documents[3] Democratic Republic of Congo Specific Documents[4] Ghana Specific Documents[5] Indonesia Specific Documents[6] Laos Specific Documents[7] Mexico Specific Documents[8] Peru Specific Documents[9] Overview "The Forest Investment Program (FIP) is a targeted program of the Strategic Climate Fund (SCF), which is one of two funds within the framework of the

294

Indonesia-Forest Investment Program (FIP) | Open Energy Information  

Open Energy Info (EERE)

Indonesia-Forest Investment Program (FIP) Indonesia-Forest Investment Program (FIP) Jump to: navigation, search Name Indonesia-Forest Investment Program (FIP) Agency/Company /Organization World Bank Sector Land Topics Background analysis, Finance, Implementation, Low emission development planning, Market analysis Website http://www.climatefundsupdate. Program Start 2008 Country Indonesia South-Eastern Asia References Forest Investment Program (FIP)[1] Forest Investment Program[2] Brazil Specific Documents[3] Democratic Republic of Congo Specific Documents[4] Ghana Specific Documents[5] Indonesia Specific Documents[6] Laos Specific Documents[7] Mexico Specific Documents[8] Peru Specific Documents[9] Overview "The Forest Investment Program (FIP) is a targeted program of the Strategic Climate Fund (SCF), which is one of two funds within the framework of the

295

Laos-Forest Investment Program (FIP) | Open Energy Information  

Open Energy Info (EERE)

Laos-Forest Investment Program (FIP) Laos-Forest Investment Program (FIP) Jump to: navigation, search Name Laos-Forest Investment Program (FIP) Agency/Company /Organization World Bank Sector Land Topics Background analysis, Finance, Implementation, Low emission development planning, Market analysis Website http://www.climatefundsupdate. Program Start 2008 Country Laos South-Eastern Asia References Forest Investment Program (FIP)[1] Forest Investment Program[2] Brazil Specific Documents[3] Democratic Republic of Congo Specific Documents[4] Ghana Specific Documents[5] Indonesia Specific Documents[6] Laos Specific Documents[7] Mexico Specific Documents[8] Peru Specific Documents[9] Overview "The Forest Investment Program (FIP) is a targeted program of the Strategic Climate Fund (SCF), which is one of two funds within the framework of the

296

Quantitative analysis of forest island pattern in selected Ohio landscapes  

Science Conference Proceedings (OSTI)

The purpose of this study was to quantitatively describe the various aspects of regional distribution patterns of forest islands and relate those patterns to other landscape features. Several maps showing the forest cover of various counties in Ohio were selected as representative examples of forest patterns to be quantified. Ten thousand hectare study areas (landscapes) were delineated on each map. A total of 15 landscapes representing a wide variety of forest island patterns was chosen. Data were converted into a series of continuous variables which contained information pertinent to the sizes, shape, numbers, and spacing of woodlots within a landscape. The continuous variables were used in a factor analysis to describe the variation among landscapes in terms of forest island pattern. The results showed that forest island patterns are related to topography and other environmental features correlated with topography.

Bowen, G.W.; Burgess, R.L.

1981-07-01T23:59:59.000Z

297

Modelling interactions of carbon dioxide, forests, and climate  

SciTech Connect

Atmospheric carbon dioxide is rising and forests and climate is changing! This combination of fact and premise may be evaluated at a range of temporal and spatial scales with the aid of computer simulators describing the interrelationships between forest vegetation, litter and soil characteristics, and appropriate meteorological variables. Some insights on the effects of climate on the transfers of carbon and the converse effect of carbon transfer on climate are discussed as a basis for assessing the significance of feedbacks between vegetation and climate under conditions of rising atmospheric carbon dioxide. Three main classes of forest models are reviewed. These are physiologically-based models, forest succession simulators based on the JABOWA model, and ecosystem-carbon budget models that use compartment transfer rates with empirically estimated coefficients. Some regression modeling approaches are also outlined. Energy budget models applied to forests and grasslands are also reviewed. This review presents examples of forest models; a comprehensive discussion of all available models is not undertaken.

Luxmoore, R.J. [Oak Ridge National Lab., TN (United States); Baldocchi, D.D. [National Oceanic and Atmospheric Administration, Oak Ridge, TN (United States)

1994-09-01T23:59:59.000Z

298

Ghana-Forest Investment Program (FIP) | Open Energy Information  

Open Energy Info (EERE)

Ghana-Forest Investment Program (FIP) Ghana-Forest Investment Program (FIP) Jump to: navigation, search Name Ghana-Forest Investment Program (FIP) Agency/Company /Organization World Bank Sector Land Topics Background analysis, Finance, Implementation, Low emission development planning, Market analysis Website http://www.climatefundsupdate. Program Start 2008 Country Ghana Western Africa References Forest Investment Program (FIP)[1] Forest Investment Program[2] Brazil Specific Documents[3] Democratic Republic of Congo Specific Documents[4] Ghana Specific Documents[5] Indonesia Specific Documents[6] Laos Specific Documents[7] Mexico Specific Documents[8] Peru Specific Documents[9] Overview "The Forest Investment Program (FIP) is a targeted program of the Strategic Climate Fund (SCF), which is one of two funds within the framework of the

299

Burkina Faso-Forest Investment Program (FIP) | Open Energy Information  

Open Energy Info (EERE)

Burkina Faso-Forest Investment Program (FIP) Burkina Faso-Forest Investment Program (FIP) Jump to: navigation, search Name Burkina Faso-Forest Investment Program (FIP) Agency/Company /Organization World Bank Sector Land Topics Background analysis, Finance, Implementation, Low emission development planning, Market analysis Website http://www.climatefundsupdate. Program Start 2008 Country Burkina Faso Western Africa References Forest Investment Program (FIP)[1] Forest Investment Program[2] Brazil Specific Documents[3] Democratic Republic of Congo Specific Documents[4] Ghana Specific Documents[5] Indonesia Specific Documents[6] Laos Specific Documents[7] Mexico Specific Documents[8] Peru Specific Documents[9] Overview "The Forest Investment Program (FIP) is a targeted program of the Strategic Climate Fund (SCF), which is one of two funds within the framework of the

300

Peru-Forest Investment Program (FIP) | Open Energy Information  

Open Energy Info (EERE)

Peru-Forest Investment Program (FIP) Peru-Forest Investment Program (FIP) Jump to: navigation, search Name Peru-Forest Investment Program (FIP) Agency/Company /Organization World Bank Sector Land Topics Background analysis, Finance, Implementation, Low emission development planning, Market analysis Website http://www.climatefundsupdate. Program Start 2008 Country Peru South America References Forest Investment Program (FIP)[1] Forest Investment Program[2] Brazil Specific Documents[3] Democratic Republic of Congo Specific Documents[4] Ghana Specific Documents[5] Indonesia Specific Documents[6] Laos Specific Documents[7] Mexico Specific Documents[8] Peru Specific Documents[9] Overview "The Forest Investment Program (FIP) is a targeted program of the Strategic Climate Fund (SCF), which is one of two funds within the framework of the

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Transformer Recharging with Alpha Channeling in Tokamaks  

SciTech Connect

Transformer recharging with lower hybrid waves in tokamaks can give low average auxiliary power if the resistivity is kept high enough during the radio frequency (rf) recharging stage. At the same time, operation in the hot ion mode via alpha channeling increases the effective fusion reactivity. This paper will address the extent to which these two large cost saving steps are compatible. __________________________________________________

N.J. Fisch

2009-12-21T23:59:59.000Z

302

Non-Gaussian Features of Transmitted Flux of QSO's Ly$\\alpha$ Absorption Intermittent Exponent  

E-Print Network (OSTI)

We calculate the structure function and intermittent exponent of the 1.) Keck data, which consists of 29 high resolution, high signal to noise ratio (S/N) QSO Ly$\\alpha$ absorption spectra, and 2.)the Ly$\\alpha$ forest simulation samples produced via the pseudo hydro scheme for the low density cold dark matter (LCDM) model and warm dark matter (WDM) model with particle mass $m_W=300, 600, 800$ and 1000 eV. These two measures detect not only non-gaussianities, but also the type of non-gaussianty in the the field. We find that, 1.) the structure functions of the simulation samples are significantly larger than that of Keck data on scales less than about 100 h$^{-1}$ kpc, 2.) the intermittent exponent of the simulation samples is more negative than that of Keck data on all redshifts considered, 3.) the order-dependence of the structure functions of simulation samples are closer to the intermittency of hierarchical clustering on all scales, while the Keck data are closer to a lognormal field on small scales. Thes...

Pando, J; Jamkhedkar, P; Zheng, W; Kirkman, D A; Tytler, D; Fang, L Z; Pando, Jesus; Feng, Long-Long; Jamkhedkar, Priya; Zheng, Wei; Kirkman, David; Tytler, David; Fang, Li-Zhi

2002-01-01T23:59:59.000Z

303

Protection of Forest Resources (Montana) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Protection of Forest Resources (Montana) Protection of Forest Resources (Montana) Protection of Forest Resources (Montana) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Institutional Nonprofit General Public/Consumer Transportation Savings Category Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Montana Program Type Environmental Regulations Provider Montana Department of Natural Resources and Conservation This statute addresses the conservation and protection of forest resources by encouraging the use of land management best practices pertaining to soil erosion, timber sale planning, associated road construction and

304

Measurement and Monitoring of the World's Forests: A Review and...  

Open Energy Info (EERE)

Measurement and Monitoring of the World's Forests: A Review and Summary of Remote Sensing Technical Capability, 2009-2015 Jump to: navigation, search Tool Summary LAUNCH TOOL Name:...

305

EA-1813: Forest County Potawatomi Comprehensive Renewable Energy...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Potawatomi Comprehensive Renewable Energy Project, Carter or Crandon (Stone Lake), Wisconsin EA-1813: Forest County Potawatomi Comprehensive Renewable Energy Project, Carter or...

306

Impact of climate change on Indian forests: a dynamic vegetation ...  

Science Conference Proceedings (OSTI)

Sep 1, 2010 ... Springer Science+Business Media B.V. 2010 .... and implement adaptation strategies to enhance the resilience of forests to climate change.

307

BIOMETRIC AND MICROMETEOROLOGICAL MEASUREMENTS OF TROPICAL FOREST CARBON BALANCE  

E-Print Network (OSTI)

dioxide fluxes from a very tall tower in a northern forest:67 m tall, 46 cm triangular cross section tower (model 55G;

2004-01-01T23:59:59.000Z

308

Controls on Evaporation in a Boreal Spruce Forest  

E-Print Network (OSTI)

boreal forest of Northern Manitoba. J. Hydrol. , 196, 310–km west of Thompson, Manitoba, to show the climatic controlsforest in Saskatchewan and Manitoba in Canada. This paper

Betts, Alan K.; Goulden, Mike; Wofsy, Steve

1999-01-01T23:59:59.000Z

309

Green Forest, Arkansas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon Green Forest, Arkansas: Energy Resources Jump to: navigation, search Equivalent URI DBpedia...

310

Tropical Africa: Mean Biomass of Closed Forests By Country  

NLE Websites -- All DOE Office Websites (Extended Search)

Forests By Country image Brown, S., and G. Gaston. 1996. Tropical Africa: Land Use, Biomass, and Carbon Estimates For 1980. ORNLCDIAC-92, NDP-055. Carbon Dioxide Information...

311

Tropical Africa: Mean Biomass of Open Forests By Country  

NLE Websites -- All DOE Office Websites (Extended Search)

Forests By Country image Brown, S., and G. Gaston. 1996. Tropical Africa: Land Use, Biomass, and Carbon Estimates For 1980. ORNLCDIAC-92, NDP-055. Carbon Dioxide Information...

312

Assessing Forested Riparian Buffer Ecological Integrity Using Lidar Data.  

E-Print Network (OSTI)

??Forested riparian buffers (FRB) provide numerous critical ecosystem services. However, the linear and often narrow spatial configuration of FRBs makes it difficult to identify broadscale… (more)

Wasser, Leah

2012-01-01T23:59:59.000Z

313

The measurement of $\\alpha_s$ from event shapes with the DELPHI detector at the highest LEP energies  

E-Print Network (OSTI)

Hadronic event shape distributions are determined from data in e+e- collisions between 183 and 207 GeV. From these the strong coupling alpha_s is extracted in O(alpha_s^2), NLLA and matched O(alpha_s^2)+NLLA theory. Hadronisation corrections evaluated with fragmentation model generators as well as an analytical power ansatz are applied. Comparing these measurements to those obtained at and around M_Z allows a combined measurement of alpha_s from all DELPHI data and a test of the energy dependence of the strong coupling.

Abdallah, J; Adam, W; Adzic, P; Albrecht, T; Alderweireld, T; Alemany-Fernandez, R; Allmendinger, T; Allport, P P; Amaldi, Ugo; Amapane, N; Amato, S; Anashkin, E; Andreazza, A; Andringa, S; Anjos, N; Antilogus, P; Apel, W D; Arnoud, Y; Ask, S; Åsman, B; Augustin, J E; Augustinus, A; Baillon, Paul; Ballestrero, A; Bambade, P; Barbier, R; Bardin, Dimitri Yuri; Barker, G; Baroncelli, A; Battaglia, Marco; Baubillier, M; Becks, K H; Begalli, M; Behrmann, A; Ben-Haim, E; Benekos, N C; Benvenuti, Alberto C; Bérat, C; Berggren, M; Berntzon, L; Bertrand, D; Besançon, M; Besson, N; Bloch, D; Blom, M; Bluj, M; Bonesini, M; Boonekamp, M; Booth, P S L; Borisov, G; Botner, O; Bouquet, B; Bowcock, T J V; Boyko, I; Bracko, M; Brenner, R; Brodet, E; Brückman, P; Brunet, J M; Bugge, L; Buschmann, P; Calvi, M; Camporesi, T; Canale, V; Carena, F; Castro, N; Cavallo, F R; Chapkin, M M; Charpentier, P; Checchia, P; Chierici, R; Shlyapnikov, P; Chudoba, J; Chung, S U; Cieslik, K; Collins, P; Contri, R; Cosme, G; Cossutti, F; Costa, M J; Crennell, D J; Cuevas-Maestro, J; D'Hondt, J; Dalmau, J; Da Silva, T; Da Silva, W; Della Ricca, G; De Angelis, A; de Boer, Wim; De Clercq, C; De Lotto, B; De Maria, N; De Min, A; De Paula, L S; Di Ciaccio, Lucia; Di Simone, A; Doroba, K; Drees, J; Dris, M; Eigen, G; Ekelöf, T J C; Ellert, M; Elsing, M; Espirito-Santo, M C; Fanourakis, G K; Fassouliotis, D; Feindt, M; Fernández, J; Ferrer, A; Ferro, F; Flagmeyer, U; Föth, H; Fokitis, E; Fulda-Quenzer, F; Fuster, J A; Gandelman, M; García, C; Gavillet, P; Gazis, E N; Gokieli, R; Golob, B; Gómez-Ceballos, G; Gonçalves, P; Graziani, E; Grosdidier, G; Grzelak, K; Guy, J; Haag, C; Hallgren, A; Hamacher, K; Hamilton, K; Haug, S; Hauler, F; Hedberg, V; Hennecke, M; Herr, H; Hoffman, J; Holmgren, S O; Holt, P J; Houlden, M A; Hultqvist, K; Jackson, J N; Jarlskog, G; Jarry, P; Jeans, D; Johansson, E K; Johansson, P D; Jonsson, P; Joram, C; Jungermann, L; Kapusta, F; Katsanevas, S; Katsoufis, E C; Kernel, G; Kersevan, Borut P; Kerzel, U; Kiiskinen, A P; King, B T; Kjaer, N J; Kluit, P; Kokkinias, P; Kourkoumelis, C; Kuznetsov, O; Krumshtein, Z; Kucharczyk, M; Lamsa, J; Leder, G; Ledroit, F; Leinonen, L; Leitner, R; Lemonne, J; Lepeltier, V; Lesiak, T; Liebig, W; Liko, D; Lipniacka, A; Lopes, J H; López, J M; Loukas, D; Lutz, P; Lyons, L; MacNaughton, J; Malek, A; Maltezos, S; Mandl, F; Marco, J; Marco, R; Maréchal, B; Margoni, M; Marin, J C; Mariotti, C; Markou, A; Martínez-Rivero, C; Masik, J; Mastroyiannopoulos, N; Matorras, F; Matteuzzi, C; Mazzucato, F; Mazzucato, M; McNulty, R; Meroni, C; Migliore, E; Mitaroff, W A; Mjörnmark, U; Moa, T; Moch, M; Mönig, K; Monge, R; Montenegro, J; Moraes, D; Moreno, S; Morettini, P; Müller, U; Münich, K; Mulders, M; Mundim, L M; Murray, W; Muryn, B; Myatt, Gerald; Myklebust, T; Nassiakou, M; Navarria, Francesco Luigi; Nawrocki, K; Nicolaidou, R; Nikolenko, M; Oblakowska-Mucha, A; Obraztsov, V F; Olshevskii, A G; Onofre, A; Orava, Risto; Österberg, K; Ouraou, A; Oyanguren, A; Paganoni, M; Paiano, S; Palacios, J P; Palka, H; Papadopoulou, T D; Pape, L; Parkes, C; Parodi, F; Parzefall, U; Passeri, A; Passon, O; Peralta, L; Perepelitsa, V F; Perrotta, A; Petrolini, A; Piedra, J; Pieri, L; Pierre, F; Pimenta, M; Piotto, E; Podobnik, T; Poireau, V; Pol, M E; Polok, G; Poropat, P; Pozdnyakov, V; Pukhaeva, N; Pullia, Antonio; Rames, J; Ramler, L; Read, A; Rebecchi, P; Rehn, J; Reid, D; Reinhardt, R; Renton, P B; Richard, F; Rídky, J; Rivero, M; Rodríguez, D; Romero, A; Ronchese, P; Roudeau, Patrick; Rovelli, T; Ruhlmann-Kleider, V; Ryabtchikov, D; Sadovskii, A; Salmi, L; Salt, J; Savoy-Navarro, A; Schwickerath, U; Segar, A; Sekulin, R L; Siebel, M; Sissakian, A N; Smadja, G; Smirnova, O G; Sokolov, A; Sopczak, A; Sosnowski, R; Spassoff, Tz; Stanitzki, M; Stocchi, A; Strauss, J; Stugu, B; Szczekowski, M; Szeptycka, M; Szumlak, T; Tabarelli de Fatis, T; Taffard, A C; Tegenfeldt, F; Timmermans, J; Tkatchev, L G; Tobin, M; Todorovova, S; Tomé, B; Tonazzo, A; Tortosa, P; Travnicek, P; Treille, D; Tristram, G; Trochimczuk, M; Troncon, C; Turluer, M L; Tyapkin, I A; Tyapkin, P; Tzamarias, S; Uvarov, V; Valenti, G; van Dam, P; Van Eldik, J; Van Lysebetten, A; Van Remortel, N; Van Vulpen, I B; Vegni, G; Veloso, F; Venus, W A; Verdier, P; Verzi, V; Vilanova, D; Vitale, L; Vrba, V; Wahlen, H; Washbrook, A J; Weiser, C; Wicke, D; Wickens, J H; Wilkinson, G; Winter, M; Witek, M; Yushchenko, O P; Zalewska-Bak, A; Zalewski, Piotr; Zavrtanik, D; Zhuravlov, V; Zimin, N I; Zinchenko, A I; Zupan, M

2004-01-01T23:59:59.000Z

314

The potential for trickle up : how local actors' experiments influence national forest policy planning  

E-Print Network (OSTI)

The loss of forests in Vietnam encouraged central government policy makers to consider new ways to manage forest resources. A major forest policy shift -- moving away from state-led management -- began in earnest in pilot ...

Blockhus, Jill M

2006-01-01T23:59:59.000Z

315

Public Support for Oil and Gas Drilling in California's Forests and Parks  

E-Print Network (OSTI)

Drilling for oil in parks and forest reserves, or off theoil and gas wells on government parklands and forest reservesoil and gas wells on government parklands and forest reserves”

Smith, Eric R.A.N.; Carlisle, Juliet; Michaud, Kristy

2004-01-01T23:59:59.000Z

316

Antibody-mediated reduction of .alpha.-ketoamides  

DOE Patents (OSTI)

Monoclonal antibodies raised against a 4-nitrophenyl phosphonate hapten catalyze the stereospecific reduction of an .alpha.-ketoamide to the corresponding .alpha.-hydroxyamide in the presence of an appropriate reducing agent.

Schultz, Peter G. (Oakland, CA); Gallop, Mark A. (East Palo Alto, CA)

1998-01-01T23:59:59.000Z

317

Study of alpha background in a dark matter detector  

E-Print Network (OSTI)

Alpha background, specifically from radon and its progeny in the uranium and thorium chains, has been a major issue in dark matter detectors. This work focuses on alpha background presence in the DMTPC experiment by examining ...

Yegoryan, Hayk

2010-01-01T23:59:59.000Z

318

Antibody-mediated reduction of {alpha}-ketoamides  

DOE Patents (OSTI)

Monoclonal antibodies raised against a 4-nitrophenyl phosphonate hapten catalyze the stereospecific reduction of an {alpha}-ketoamide to the corresponding {alpha}-hydroxyamide in the presence of an appropriate reducing agent.

Schultz, P.G.; Gallop, M.A.

1998-06-09T23:59:59.000Z

319

Ecosystem carbon dioxide fluxes after disturbance in forests of North America  

E-Print Network (OSTI)

forest in northern Wisconsin, USA, Agric. For. Meteorol. ,managed forests in northern Wisconsin, USA, Ecosystems, 10,Oceanic Sciences, University of Wisconsin?Madison, Madison,

2010-01-01T23:59:59.000Z

320

Biological Nitrogen Fixation in Two Tropical Forests: Ecosystem-Level Patterns and Effects of Nitrogen Fertilization  

E-Print Network (OSTI)

and high elevation forests of Puerto Rico. Appl Soil Ecolthe Luquillo Mountains, Puerto Rico. Biotropica 23:386–92.hillslope Tabonuco forest, Puerto Rico. Biogeochemistry 46:

Cusack, Daniela F.; Silver, Whendee; McDowell, William H.

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Remote Sensing of Forest Health Trends in the Northern Green Mountains of Vermont.  

E-Print Network (OSTI)

??Northeastern forests are being impacted by unprecedented environmental stressors, including acid deposition, invasive pests, and climate change. Forest health monitoring at a landscape scale is… (more)

Olson, Michael G.

322

Assessing understorey structural characteristics in eucalypt forests: an investigation of LiDAR techniques.  

E-Print Network (OSTI)

??The potential of airborne LiDAR technology to quantify forest structure within eucalypt forests has been evaluated with a focus on the understorey stratum. To achieve… (more)

Goodwin, Nicholas R.

2006-01-01T23:59:59.000Z

323

Some numerical reslts on best uniform polynomial approximation of. chi. sup. alpha. on (0,1)  

SciTech Connect

Let {alpha} be a positive number, and let E{sub n}(chi{sup {alpha}}; (0,1)) denote the error of best uniform approximation to {chi}{sup {alpha}}, by polynomials of degree at most n, on the interval (0,1). The Russian mathematician S.N. Bernstein established the existence of a nonnegative constant {Beta}({alpha}) such that {Beta}({alpha}):= {sub n{yields}{infinity}lim(2n){sup 2{alpha}}E{sub n}({chi}{sup {alpha}};(0.1)). In addition, Bernstein showed that {Beta}{alpha} < {Gamma}(2{alpha}){vert bar}sin(pi}{alpha}){vert bar}/{pi} ({alpha} > 0) and that {Gamma}(2{alpha}){vert bar}sin({pi}{alpha}){vert bar}/{pi} (1{minus}1/2{alpha}{minus}1) < {Beta}({alpha}) ({alpha} > {1/2}), so that the asymptotic behavior of {Beta}({alpha}) is known when {alpha}{yields}{infinity}. Still, the problem of trying to determine {Beta}({alpha}) more precisely, for all {alpha} > 0, is intriguing. To this end, we have rigorously determined the numbers for thirteen values of {alpha}, where these numbers were calculated with a precision of at least 200 significant digits. For each of these thirteen values of {alpha}, Richardson's extrapolation was applied to the products to obtain estimates of {Beta}({alpha}) to approximately 40 decimal places. Included are graphs of the points ({alpha},{Beta}({alpha})) for the thirteen values of {alpha} that we considered.

Carpenter, A.J.; Varga, R.S.

1992-01-01T23:59:59.000Z

324

Production, prices, employment, and trade in northwest forest industries, third quarter 1995. Forest Service resource bulletin  

SciTech Connect

The report presents current information on the timber situation in Alaska, Washington, Oregon, California, Montana, Idaho, and British Columbia, including data on lumber and plywood production and prices; timber harvest; employment in forest products industries; international trade in logs, pulpwood, chips, lumber, and plywood; log prices in the Pacific Northwest; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1996-03-01T23:59:59.000Z

325

Production, prices, employment, and trade in northwest forest industries, third quarter 1994. Forest Service resource bulletin  

SciTech Connect

The report presents current information on the timber situation in Alaska, Washington, Oregon, California, Montana, Idaho, and British Columbia, including data on lumber and plywood production and prices; timber harvest; employment in forest products industries; international trade in logs, pulpwood, chips, lumber, and plywood; log prices in the Pacific Northwest; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1995-03-01T23:59:59.000Z

326

Production, prices, employment, and trade in northwest forest industries, fourth quarter 1995. Forest Service resource bulletin  

SciTech Connect

This report presents current information on the timber situation in Alaska, Washington, Oregon, California, Montana, Idaho, and British Columbia, including data on lumber and plywood production and prices; timber harvest; employment in forest products industries; international trade in logs, pulpwood, chips, lumber, and plywood; log prices in the Pacific Northwest; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1996-06-01T23:59:59.000Z

327

Production, prices, employment, and trade in northwest forest industries, fourth quarter 1994. Forest Service resource bulletin  

SciTech Connect

The report presents current information on the timber situation in Alaska, Washington, Oregon, California, Montana, Idaho, and British Columbia, including data on lumber and plywood production and prices; timber harvest; employment in forest products industries; international trade in logs, pulpwood, chips, lumber, and plywood; log prices in the Pacific Northwest; volume and average prices of stumpage sold by public agencies; and other related items.

Warren, D.D.

1995-06-01T23:59:59.000Z

328

Automatically processed alpha-track radon monitor  

DOE Patents (OSTI)

An automatically processed alpha-track radon monitor is provided which includes a housing having an aperture allowing radon entry, and a filter that excludes the entry of radon daughters into the housing. A flexible track registration material is located within the housing that records alpha-particle emissions from the decay of radon and radon daughters inside the housing. The flexible track registration material is capable of being spliced such that the registration material from a plurality of monitors can be spliced into a single strip to facilitate automatic processing of the registration material from the plurality of monitors. A process for the automatic counting of radon registered by a radon monitor is also provided.

Langner, G.H. Jr.

1991-05-02T23:59:59.000Z

329

Alternate Alpha Induced Reactions for NIF Radiochemistry  

SciTech Connect

Radiochemical analysis of NIF capsule residues has been identified as a potential diagnostic of NIF capsule performance. In particular, alpha-induced nuclear reactions that occur on tracer elements added to the NIF capsule have been shown through simulation to be a very sensitive diagnostic for mix. The short range of the alpha particles makes them representative of the hot spot where they are created through the fusion of deuterium and tritium. Reactions on elements doped into the innermost part of the capsule ablator would therefore be sensitive to material that had mixed into the hot spot. Radiochemical determinations of activated detector elements may perhaps be the only true measure of mix that occurs in a NIF capsule, particularly in cases when the capsule fails.

Shaughnessy, D A; Moody, K J; Bernstein, L A

2010-02-26T23:59:59.000Z

330

Fault Diagnosis of Transformer Based on Random Forest  

Science Conference Proceedings (OSTI)

Fault diagnosis of transformer in power system is studied in this paper. Considering the excellent performances of Random Forest (RF) in pattern recognition, we apply RF to construct a diagnosis model to predict the situation of transformer. The experiments ... Keywords: Rondom Forest, fault diagnosis of transformer, classification model

Xi Chen; Hongmei Cui; Linkai Luo

2011-03-01T23:59:59.000Z

331

Climate change effects on forests: A critical review  

SciTech Connect

While current projections of future climate change associated with increases in atmospheric greenhouse gases have a high degree of uncertainty, the potential effects of climate change on forests are of increasing concern. A number of studies based on forest simulation models predict substantial temperatures associated with increasing atmospheric carbon dioxide concentrations. However, the structure of these computer models may cause them to overemphasize the role of climate in controlling tree growth and mortality. We propose that forest simulation models be reformulated with more realistic representations of growth responses to temperature, moisture, mortality, and dispersal. We believe that only when these models more accurately reflect the physiological bases of the responses of tree species to climate variables can they be used to simulate responses of forests to rapid changes in climate. We argue that direct forest responses to climate change projected by such a reformulated model may be less traumatic and more gradual than those projected by current models. However, the indirect effects of climate change on forests, mediated by alterations of disturbance regimes or the actions of pests and pathogens, may accelerate climate-induced change in forests, and they deserve further study and inclusion within forest simulation models.

Loehle, C. [Argonne National Lab., IL (United States); LeBlanc, D. [Ball State Univ., Muncie, IN (United States). Dept. of Biology

1996-02-01T23:59:59.000Z

332

On simplifying allometric analyses of forest biomass Dimitris Zianis*  

E-Print Network (OSTI)

On simplifying allometric analyses of forest biomass Dimitris Zianis* , Maurizio Mencuccini biomass plays a key role in sustainable management and in estimating forest carbon stocks. The most common mathematical model in biomass studies takes the form of the power function M ¼ aDb where a and b

Mencuccini, Maurizio

333

Carbon dioxide emission during forest fires ignited by lightning  

E-Print Network (OSTI)

In this paper we developed the model for the carbon dioxide emission from forest fire. The master equation for the spreading of the carbon dioxide to atmosphere is the hyperbolic diffusion equation. In the paper we study forest fire ignited by lightning. In that case the fores fire has the well defined front which propagates with finite velocity.

Magdalena Pelc; Radoslaw Osuch

2009-03-31T23:59:59.000Z

334

The Energy Balance of a Tropical Evergreen Forest  

Science Conference Proceedings (OSTI)

This study presents the radiation climate of a dry tropical forest. It is based on measurements of incoming and outgoing shortwave and longwave radiation at the top and floor of the forest canopy during five months spanning the monsoon cycle in ...

R. T. Pinker; O. E. Thompson; T. F. Eck

1980-12-01T23:59:59.000Z

335

Internet Business Opportunities in the Forest Products Industry  

E-Print Network (OSTI)

-Forest Products Marketing Interim Director-Louisiana Forest Products Laboratory School of Renewable Natural KINGDOM 26.0 5% 5 FRANCE 21.8 4% 6 ITALY 17.5 3% 7 CANADA 16.0 3% 8 CHINA 15.9 3% 9 AUSTRALIA 10.6 2% 10

336

Forest policies and programs affecting vulnerability and adaptation ...  

Science Conference Proceedings (OSTI)

Aug 28, 2010 ... xerophytic in Rajasthan, evergreen in the North–East and the Ghat areas, mangroves .... The FSI (1996) estimated the fuelwood consumption at 201 million ..... Although forest areas in most semiarid regions are predicted to be much drier, and ... and control outbreaks (Society of American Foresters 2005).

337

New Approaches to Forest Monitoring using Remote Sensing  

E-Print Network (OSTI)

New Approaches to Forest Monitoring using Remote Sensing MSS 1972 ASTER 2001 Matt Hansen and John Townshend #12;New Approaches to Forest Monitoring using Remote Sensing ·Sampling approaches for the Boreal remotely sensed data · Matthew C. Hansen, · Stephen V. Stehman, · Peter V. Potapov, · Thomas R. Loveland

338

Overview of Forest Observations in the GEOSS Work Plan  

E-Print Network (OSTI)

Land­surface climate int. Vegetation characteristics Weather Land­surface climate int. Vegetation of forest carbon (nationally and globally) · Engage user communities and networks not yet involved in GEO-07 Regional Networks for Ecosystems 7. US-06-02 Pilot Communities of Practice New task proposed: Forest Carbon

339

From Coercion to Collaboration: Participatory Forest Management in Indonesia  

E-Print Network (OSTI)

From Coercion to Collaboration: Participatory Forest Management in Indonesia A Public Seminar a recent development in Indonesia. It attempts to tackle the problem of illegal logging and provide tenure systems in Indonesia. He completed his PhD in Forest Policy at the Graduate School of Agricultural

340

First Attempts at Antihydrogen Trapping in ALPHA  

SciTech Connect

The ALPHA apparatus is designed to produce and trap antihydrogen atoms. The device comprises a multifunction Penning trap and a superconducting, neutral atom trap having a minimum-B configuration. The atom trap features an octupole magnet for transverse confinement and solenoidal mirror coils for longitudinal confinement. The magnetic trap employs a fast shutdown system to maximize the probability of detecting the annihilation of released antihydrogen. In this article we describe the first attempts to observe antihydrogen trapping.

Andresen, G. B.; Bowe, P. D.; Hangst, J. S. [Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Bertsche, W.; Butler, E.; Charlton, M.; Humphries, A. J.; Jenkins, M. J.; Joergensen, L. V.; Madsen, N.; Werf, D. P. van der [Department of Physics, Swansea University, Swansea SA2 8PP (United Kingdom); Bray, C. C.; Chapman, S.; Fajans, J.; Povilus, A.; Wurtele, J. S. [Department of Physics, University of California at Berkeley, Berkeley, CA 94720-7300 (United States); Cesar, C. L.; Lambo, R.; Silveira, D. M. [Instituto de Fisica Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-972 (Brazil); Fujiwara, M. C. [TRIUMF, 4004 Wesbrook Mall, Vancouver BC, V6T 2A3 (Canada)] (and others)

2008-08-08T23:59:59.000Z

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Detection of alpha radiation in a beta radiation field  

DOE Patents (OSTI)

An apparatus and method for detecting alpha particles in the presence of high activities of beta particles utilizing an alpha spectrometer. The apparatus of the present invention utilizes a magnetic field applied around the sample in an alpha spectrometer to deflect the beta particles from the sample prior to reaching the detector, thus permitting detection of low concentrations of alpha particles. In the method of the invention, the strength of magnetic field required to adequately deflect the beta particles and permit alpha particle detection is given by an algorithm that controls the field strength as a function of sample beta energy and the distance of the sample to the detector.

Mohagheghi, Amir H. (Albuquerque, NM); Reese, Robert P. (Edgewood, NM)

2001-01-01T23:59:59.000Z

342

Use of Forest Inventories and Geographic Information Systems To Estimate  

NLE Websites -- All DOE Office Websites (Extended Search)

Appendix B: Use of Forest Inventories and Geographic Information Systems To Appendix B: Use of Forest Inventories and Geographic Information Systems To Estimate Biomass Density of Tropical Forests: Application to Tropical Africa S. Brown and G. Gaston U.S. Environmental Protection Agency, 200 SW 35th St., Corvalis, OR 97333, USA Abstract One of the most important databases needed for estimating emissions of carbon dioxide resulting from changes in the cover, use, and management of tropical forests is the total quantity of biomass per unit area, referred to as biomass density. Forest inventories have been shown to be valuable sources of data for estimating biomass density, but inventories for the tropics are few in number and their quality is poor. This lack of reliable data has been overcome by use of a promising approach that produces

343

The Role of Disturbance in Dry Tropical Forest Landscapes  

Science Conference Proceedings (OSTI)

Disturbance can be defined as 'any relatively discrete event in time that disrupts ecosystem, community, or population structure and changes resources, substrate availability, or the physical environment'. This definition requires that the spatial and temporal scales of the system and disturbance be determined. Disturbances are typically characterized by their size, spatial distribution, frequency or return time, predictability, and magnitude (which includes both intensity and severity). These disturbance attributes set the parameters for the suite of species, both plant and animal, that can persist within a given system. As such, an understanding of seasonally dry tropical forests in Asia requires an understanding of disturbance within the region. However, disturbances are relatively poorly understood in dry tropical forests, partly because of the weak seasonality in temperature and high tree species diversity of these forests relative to most forest systems of the world. There are about 1,048,700 km{sup 2} of dry tropical forests worldwide and that only 3% of this land is in conservation status. In other words, 97% of the world's seasonally dry tropical forest is at risk of human disturbance. About half of this forest occurs in South America, where most of the conservation lands are located. Satellite imagery based on MODIS (Moderate Resolution Imaging Spectroradiometer) data shows that only about 3.8% of the world's dry tropical forests are in Australia and South east Asia. The susceptibility of these forests to human disturbances is of great concern and is largely unstudied. Because natural disturbance regimes shape the ecosystem structure and are in many ways integral to these forest systems, it is critical to know how natural disturbance affects dry forest in order to understand the effects of human activities on these forests. Even basic information about disturbances in dry tropical forests is only recently available. Therefore this chapter brings together much of the available information from dry tropical forest throughout the world with the goal of developing an understanding of the role of disturbance in Asian dry forests. Most ecologists now recognize that disturbances, rather than being catastrophic agents of destruction, are a normal, perhaps even an integral, part of long-term system dynamics. The composition, structure, organization, and development and trophic dynamics of most forest systems are the products of disturbances. As an example, the forest composition for two disturbances in the Anaikatty Hills of Western Ghats were compared, where the low disturbance was from past logging followed by cutting and illicit felling and grazing and the high disturbance was due to human presence, past logging, and fuelwood collection. They found higher species richness and Shannon-Wiener diversity index for the low-disturbance forest (98 and 3.9, respectively) compared to the high-disturbance stand (45 and 2.71, respectively) as well as significant differences in mean basal area of trees, density of seedlings, number of species, density and diversity of shrubs, and number of species and diversity of herbs. Some ecological systems contain species that have evolved in response to disturbances. Adaptations typical of dry tropical forest plants are drought tolerance, seed dispersal mechanisms, and the ability to sprout subsequent to disturbance. In contrast, evidence was found that human disturbance in Kakamega Forest of western Kenya has significantly reduced allelic richness and heterozygosity, increased inbreeding, and slightly reduced gene flow in Prunus africana in the past century.

Dale, Virginia H [ORNL

2011-01-01T23:59:59.000Z

344

Tools for Forest Carbon Inventory, Management, and Reporting | Open Energy  

Open Energy Info (EERE)

Tools for Forest Carbon Inventory, Management, and Reporting Tools for Forest Carbon Inventory, Management, and Reporting Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Tools for Carbon Inventory, Management, and Reporting Agency/Company /Organization: United States Forest Service, United States Department of Agriculture Sector: Land Focus Area: Forestry Topics: GHG inventory, Resource assessment Resource Type: Guide/manual, Lessons learned/best practices, Publications, Training materials, Software/modeling tools User Interface: Desktop Application, Website Website: nrs.fs.fed.us/carbon/tools/ Cost: Free Tools for Carbon Inventory, Management, and Reporting Screenshot References: Carbon Tools[1] Logo: Tools for Carbon Inventory, Management, and Reporting "Accurate estimates of carbon in forests are crucial for forest carbon

345

Forest City Military Communities, Hawaii | Open Energy Information  

Open Energy Info (EERE)

Military Communities, Hawaii Military Communities, Hawaii Jump to: navigation, search Name Forest City Military Communities, Hawaii Place Honolulu, HI Website http://www.fcnavyhawaii.com/ References Solar Technical Assistance Provided to Forest City Military Communities in Hawaii[1] Information About Partnership with NREL Partnership with NREL Yes Partnership Type Test & Evaluation Partner Partnering Center within NREL Electricity Resources & Building Systems Integration LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! Forest City Military Communities, Hawaii is a company located in Honolulu, HI. References ↑ "Solar Technical Assistance Provided to Forest City Military Communities in Hawaii" Retrieved from "http://en.openei.org/w/index.php?title=Forest_City_Military_Communities,_Hawaii&oldid=381670"

346

Forest Products Industry of the Future  

SciTech Connect

Los Alamos Technical Associates, Inc (LATA) conducted an evaluation of the potential impact and value of a portion of the current portfolio of r&d projects supported by the Office of Industrial Technology and the Forest Products Industry of the Future. The mission of the evaluation was to (a) assess the potential impact of the projects to meet the critical goals of the industry as identified in the vision and roadmapping documents. (b) Evaluate the relationship between the current portfolio of projects and the Agenda 202 Implementation Plan. In addition, evaluate the relationship between the portfolio and the newly revised draft technology strategy being created by the industry. (c) Identify areas where current efforts are making significant progress towards meeting industry goals and identify areas where additional work my be required to meet these goals. (d) Make recommendations to the DOE and the Forest Products Industry on possible improvements in the portfolio and in the current methodology that DOE uses to assess potential impacts on its R&D activities.

Los Alamos Technical Associates, Inc

2002-05-01T23:59:59.000Z

347

Forest Creek Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Creek Wind Farm Creek Wind Farm Jump to: navigation, search Name Forest Creek Wind Farm Facility Forest Creek Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner E.On Climate & Renewables Developer E.On Climate & Renewables/RGI Energy Purchaser Luminant Location Glasscock and Sterling Counties TX Coordinates 31.937348°, -101.312513° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":31.937348,"lon":-101.312513,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

348

Stand-Level Gas-Exchange Responses to Seasonal Drought in Very Young Versus Old Douglas-fir Forests of the Pacific Northwest, USA  

SciTech Connect

This study examines how stand age affects ecosystem mass and energy exchange response to seasonal drought in three adjacent Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) forests. The sites include two early seral stands (ES) (0-15 years old) and an old-growth (OG) ({approx} 450-500) forest in the Wind River Experiment Forest, Washington, USA. We use eddy covariance flux measurements of carbon dioxide (F{sub NEE}), latent energy ({lambda}E) and sensible heat (H) to derive evapotranspiration rate (E{sub T}), bowen ratio ({beta}), water use efficiency (WUE), canopy conductance (G{sub c}), the Priestley-Taylor coefficient ({alpha}) and a canopy decoupling factor ({Omega}). The canopy and bulk parameters are examined to see how ecophysiological responses to water stress, including changes in available soil water ({theta}{sub r}) and vapor pressure deficit ({delta}e) differ among the two forest successional-stages. Despite very different rainfall patterns in 2006 and 2007, we observed distinct successional-stage relationships between E{sub T}, {alpha}, and G{sub c} to {delta}e and {theta}{sub r} during both years. The largest stand differences were (1) higher morning G{sub c} (> 10 mm s{sup -1}) at the OG forest coinciding with higher CO{sub 2} uptake (F{sub NEE} = -9 to -6 {micro}mol m{sup -2} s{sup -1}) but a strong negative response in G{sub c} to moderate {delta}e later in the day and a subsequent reduction in E{sub T}, and (2) higher E{sub T} at the ES stands because midday canopy conductance did not decrease until very low water availability levels (<30%) were reached at the end of the summer. Our results suggest that early seral stands are more likely than mature forests to experience declines in production if the summer drought becomes longer or intensifies because water conserving ecophysiological responses were only observed at the very end of the seasonal drought period in the youngest stands.

Wharton, S; Schroeder, M; Bible, K; Falk, M; Paw U, K T

2009-02-23T23:59:59.000Z

349

Capacity Building in Sharing Forest and Market Information Prague & Krtiny, Czech Republic, 25 October 2005  

E-Print Network (OSTI)

Capacity Building in Sharing Forest and Market Information Prague & Krtiny, Czech Republic, 25 Information Prague & Krtiny, Czech Republic, 25 October 2005 F A O Contents I. Forest products markets forest products market information #12;Capacity Building in Sharing Forest and Market Information Prague

350

Decomposition of peat from upland boreal forest: Temperature dependence and sources of respired carbon  

E-Print Network (OSTI)

spruce forest, near Thompson, Manitoba, Canada. The samplingsite near Thompson, Manitoba, showed increased contribution

Dioumaeva, Irina; Trumbore, Susan; Schuur, Edward A. G.; Goulden, Michael L.; Litvak, Marcy; Hirsch, Adam I.

2002-01-01T23:59:59.000Z

351

Effect of foliage spatial heterogeneity in the MODIS LAI and FPAR algorithm over broadleaf forests  

E-Print Network (OSTI)

Harvard Forest, Petersham, MA "Deciphering long-term hydrologic variability from lake sediments (invited

Myneni, Ranga B.

352

CO/sub 2/-induced climate change and forest resources  

SciTech Connect

The objective of this paper is to examine potential forest responses to increases in atmospheric CO/sub 2/ and to CO/sub 2/-induced climate change. Forests both affect and respond to changes in atmospheric CO/sub 2/ and climate. Forests directly affect climate at the global scale by altering the earth's albedo, hydrological regimes, and atmospheric CO/sub 2/. At a local scale they can alter air temperature, humidity, and solar radiation. In turn, forests are affected by CO/sub 2/ and climate at many spatial and temporal scales. Forest responses to CO/sub 2/ and climate may be examined by using five biotic paradigms. Each paradigm has its own spatial and temporal scale and its own set of unique phenomena responsive to CO/sub 2/ and climate changes. We will first use these paradigms to review forest responses to CO/sub 2/ and climate. We will then describe the linkages between these paradigms and the implications of these linkages for future research on the impact of elevated atmospheric CO/sub 2/ and climate change on forest resources. 51 refs., 1 fig.

Graham, R.L.; Turner, M.G.; Dale, V.H.

1988-01-01T23:59:59.000Z

353

California`s forest products industry: 1992. Forest Service resource bulletin  

SciTech Connect

The report presents the findings of a survey of primary forest products industries in California for 1992. The survey included the following sectors: Lumber, pulp and board; shake and shingle; export; and post, pole, and piling. Veneer and plywood mills are not included because they could not be presented without disclosng critical details. Tables, presented by sector and for the industry as a whole, include characteristics of the industry, nature and flow of logs consumed, and disposition of mill residence.

Ward, F.R.

1995-03-01T23:59:59.000Z

354

Oregon`s forest products industry: 1992. Forest Service resource bulletin  

SciTech Connect

The report presents the findings of a survey of primary forest products industries in Oregon for 1992. The survey included the following sectors; lumber; veneer and plywood; pulp and board; shake and shingle; export; and post, pole, and piling. Tables presented by sector and for the industry as a whole, include characteristics of the industry, nature and flow of logs consumed, and disposition of mill residues.

Ward, F.R.

1995-03-01T23:59:59.000Z

355

Jordan-US Forest Service Climate Change Technical Cooperation | Open Energy  

Open Energy Info (EERE)

US Forest Service Climate Change Technical Cooperation US Forest Service Climate Change Technical Cooperation Jump to: navigation, search Name Jordan-US Forest Service Climate Change Technical Cooperation Agency/Company /Organization United States Forest Service Sector Land Topics Background analysis Website http://www.fs.fed.us/global/to Country Jordan Western Asia References US Forest Service Climate Change Technical Cooperation[1] "In Jordan, the Forest Service provides technical support to Bedouin communities on community grassland rehabilitation projects. The focus is on rehabilitating extremely degraded rangelands-unique because it is designed to work without using fences to exclude grazing animals." References ↑ "US Forest Service Climate Change Technical Cooperation" Retrieved from

356

Brazil-US Forest Service Climate Change Technical Cooperation | Open Energy  

Open Energy Info (EERE)

US Forest Service Climate Change Technical Cooperation US Forest Service Climate Change Technical Cooperation Jump to: navigation, search Name Brazil-US Forest Service Climate Change Technical Cooperation Agency/Company /Organization United States Forest Service Sector Land Focus Area Forestry Topics Background analysis Website http://www.fs.fed.us/global/to Country Brazil South America References US Forest Service Climate Change Technical Cooperation[1] USFS engagement in Brazil: - Reducing deforestation through improving sustainable forest management ("...supports local partners in Brazil to teach forest technicians, managers and supervisors how to apply forest management principles and reduced-impact logging methods in the Brazilian Amazon") - Forest Monitoring - Remote Sensing - LiDAR - National Forest

357

Russia-US Forest Service Climate Change Technical Cooperation | Open Energy  

Open Energy Info (EERE)

US Forest Service Climate Change Technical Cooperation US Forest Service Climate Change Technical Cooperation Jump to: navigation, search Name Russia-US Forest Service Climate Change Technical Cooperation Agency/Company /Organization United States Forest Service Sector Land Focus Area Forestry Topics Background analysis Website http://www.fs.fed.us/global/to Country Russia Eastern Europe References US Forest Service Climate Change Technical Cooperation[1] "Like the US, Russia contains temperate and boreal forests. The forests share similar species, similar forest health problems, and some common threats. Since the mid-nineties, the US Forest Service has worked with Russian partners, including the State Forestry Service of Russia to: 1) promote sustainable forestry practices, 2) address forest health issues and

358

Northern Hemisphere Biome-and Process-Specific Changes in Forest Area and  

NLE Websites -- All DOE Office Websites (Extended Search)

Northern Hemisphere Biome-and Process-Specific Changes in Forest Area and Northern Hemisphere Biome-and Process-Specific Changes in Forest Area and Gross Merchantable Volume: 1890-1990 (DB1017) data Data DOI: 10.3334/CDIAC/lue.db1017 Contributors A. N. D. Auclair, J. A. Bedford, and C. Revenga Description This database lists annual changes in areal extent (Ha) and gross merchantable wood volume (m3) produced by depletion and accrual processes in boreal and temperate forests in Alaska, Canada, Europe, Former Soviet Union, Non-Soviet temperate Asia, and the contiguous United States for the years 1890 through 1990. Forest depletions (source terms for atmospheric CO2) are identified as forest pests, forest dieback, forest fires, forest harvest, and land-use changes (predominantly the conversion of forest, temperate woodland, and shrubland to cropland). Forest accruals (sink terms

359

Community Renewable Energy Deployment: Forest County Potawatomi Tribe |  

Open Energy Info (EERE)

Potawatomi Tribe Potawatomi Tribe Jump to: navigation, search Name Community Renewable Energy Deployment: Forest County Potawatomi Tribe Agency/Company /Organization US Department of Energy Sector Energy Focus Area Energy Efficiency - Central Plant, Economic Development, Forestry, Greenhouse Gas, Renewable Energy, Biomass - Anaerobic Digestion, Biomass, Solar, - Solar Pv, Biomass - Waste To Energy Phase Develop Finance and Implement Projects Resource Type Case studies/examples Availability Publicly available -- Free Publication Date 11/29/2010 Website http://www1.eere.energy.gov/co Locality Forest County Potawatomi Tribe References Community Renewable Energy Deployment: Forest County Potawatomi Tribe[1] Contents 1 Overview 2 Highlights 3 Environmental Aspects 4 References

360

Forest City Enterprises | Open Energy Information  

Open Energy Info (EERE)

Enterprises Enterprises Jump to: navigation, search Name Forest City Enterprises Place Denver, CO Zip 80238 Website http://www.forestcity.net/ Coordinates 39.7564482°, -104.8863279° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.7564482,"lon":-104.8863279,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

NPP Boreal Forest: Canal Flats, Canada  

NLE Websites -- All DOE Office Websites (Extended Search)

Canal Flats, Canada, 1984 Canal Flats, Canada, 1984 Data Citation Cite this data set as follows: Comeau, P. G., and J. P. Kimmins. 1999. NPP Boreal Forest: Canal Flats, Canada, 1984. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Above and below-ground biomass and productivity of four lodgepole pine stands (Pinus contorta var. latifolia) were determined near Canal Flats, Canada, during the 1984 growing season. Two stands growing on xeric sites and two stands growing on mesic sites were studied to determine the influence of soil water content on resource allocation to above-ground versus below-ground plant components. The stands were 70-78 years old, unmanaged, and had regenerated naturally following wildfire.

362

Effect of Group-Selection Opening Size on Breeding Bird Habitat Use in a Bottomland Forest  

DOE Green Energy (OSTI)

Research on the effects of creating group-selection openings of various sizes on breeding birds habitat use in a bottomland hardwood forest of the Upper Coastal Plain of South Carolina. Creation of 0.5-ha group selection openings in southern bottomland forests should provide breeding habitat for some field-edge species in gaps and habitat for forest-interior species and canopy-dwelling forest-edge species between gaps provided that enough mature forest is made available.

Moorman, C.E.; D.C. Guynn, Jr.

2001-12-01T23:59:59.000Z

363

Aqueous chemical growth of alpha-Fe2O3-alpha-Cr203 nanocompositethin films  

DOE Green Energy (OSTI)

We are reporting here on the inexpensive fabrication and optical properties of an iron(III) oxide chromium(III) oxide nanocomposite thin film of corundum crystal structure. Its novel and unique-designed architecture consists of uniformed, well-defined and oriented nanorods of Hematite (alpha-Fe2O3) of 50 nm in diameter and 500nm in length and homogeneously distributed nonaggregated monodisperse spherical nanoparticles of Eskolaite (alpha-Cr2O3) of 250 nm in diameter. This alpha-Fe2O3 alpha-Cr2O3 nanocomposite thin film is obtained by growing, directly onto transparent polycrystalline conducting substrate, an oriented layer of hematite nanorods and growing subsequently, the eskolaite layer. The synthesis is carried out by a template-free, low-temperature, multilayer thin film coating process using aqueous solution of metal salts as precursors. Almost 100 percent of the light is absorbed by the composite film between 300 and 525 nm and 40 percent at 800 nm which yields great expectations as photoanode materials for photovoltaic cells and photocatalytic devices.

Vayssieres, Lionel; Guo, Jinghua; Nordgren, Joseph

2001-06-30T23:59:59.000Z

364

CRAD, Training - Oak Ridge National Laboratory TRU ALPHA LLWT Project |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

TRU ALPHA LLWT TRU ALPHA LLWT Project CRAD, Training - Oak Ridge National Laboratory TRU ALPHA LLWT Project November 2003 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a November 2003 assessment of the Training Program portion of an Operational Readiness Review of the Oak Ridge National Laboratory TRU ALPHA LLWT Project. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Training - Oak Ridge National Laboratory TRU ALPHA LLWT Project More Documents & Publications CRAD, Quality Assurance - Oak Ridge National Laboratory TRU ALPHA LLWT Project

365

MFTF-. cap alpha. + T progress report  

SciTech Connect

Early in FY 1983, several upgrades of the Mirror Fusion Test Facility (MFTF-B) at Lawrence Livermore National Laboratory (LLNL) were proposed to the fusion community. The one most favorably received was designated MFTF-..cap alpha..+T. The engineering design of this device, guided by LLNL, has been a principal activity of the Fusion Engineering Design Center during FY 1983. This interim progress report represents a snapshot of the device design, which was begun in FY 1983 and will continue for several years. The report is organized as a complete design description. Because it is an interim report, some parts are incomplete; they will be supplied as the design study proceeds. As described in this report, MFTF-..cap alpha..+T uses existing facilities, many MFTF-B components, and a number of innovations to improve on the physics parameters of MFTF-B. It burns deuterium-tritium and has a central-cell Q of 2, a wall loading GAMMA/sub n/ of 2 MW/m/sup 2/ (with a central-cell insert module), and an availability of 10%. The machine is fully shielded, allows hands-on maintenance of components outside the vacuum vessel 24 h after shutdown, and has provisions for repair of all operating components.

Nelson, W.D. (ed.)

1985-04-01T23:59:59.000Z

366

Alpha inelastic scattering and cluster structures in {sup 24}Mg  

Science Conference Proceedings (OSTI)

The alpha inelastic scattering from {sup 24}Mg was measured to obtain the isoscalar natural-parity excitation strengths and to search for the {alpha}-condensed states. The multipole decomposition analysis for the measured cross sections was performed. The strength distributions for the {Delta}L = 0-3 were successfully obtained and the possible candidates for the {alpha}-condensed states around the {sup 16}O core were found.

Kawabata, T.; Ishiguro, Y.; Nozawa, Y.; Tomida, N.; Yokota, N. [Department of Physics, Kyoto University (Japan); Adachi, T.; Fujiwara, M.; Hatanaka, K.; Tamii, A.; Yasuda, Y.; Zenihiro, J. [Research Center for Nuclear Physics, Osaka University (Japan); Itoh, M.; Takahashi, T.; Yoshida, H. P. [Cyclotron and Radioisotope Center, Tohoku University (Japan); Maeda, Y.; Miyasako, H.; Saito, T. [Faculty of Engineering, University of Miyazaki (Japan); Matsubara, H.; Sasamoto, Y.; Tokieda, H. [Center for Nuclear Study, University of Tokyo (Japan)

2011-05-06T23:59:59.000Z

367

ESTIMATION AND MODELING OF FOREST ATTRIBUTES ACROSS LARGE SPATIAL SCALES USING BIOMEBGC, HIGH-RESOLUTION IMAGERY, LIDAR DATA, AND INVENTORY DATA.  

E-Print Network (OSTI)

??The accurate estimation of forest attributes at many different spatial scales is a critical problem. Forest landowners may be interested in estimating timber volume, forest… (more)

Golinkoff, Jordan Seth

2013-01-01T23:59:59.000Z

368

Atomistic Modeling of Screw Dislocation Mobility in Alpha-Fe  

Science Conference Proceedings (OSTI)

Register as a New User ... Presentation Title, Atomistic Modeling of Screw Dislocation Mobility in Alpha-Fe. Author(s), Neeraj S. Thirumalai, Peter Gordon, Ju Li, ...

369

Crystallographic variant selection in {alpha}-{beta} brass  

Science Conference Proceedings (OSTI)

The transformation texture of {alpha}/{beta} brass with a diffusional Widmanstaetten {alpha} growth morphology has been investigated. Electron micrographs and electron backscattered diffraction was used to determine that the orientation relationship between the {beta} phase and the {alpha} associated with nucleation at {beta} grain boundaries was 44.3 deg . Crystallographic variant selection was observed across those prior {beta}/{beta} grain boundaries, but this has little effect on the transformation texture due to the crystal symmetry. The effect of the crystallographic variant selection on texture is further weakened by nucleation of diffusional transformed {alpha} in the grain interior.

Stanford, N. [Manchester Materials Science Centre, University of Manchester, Grosvenor Street, Manchester M1 7HS (United Kingdom); Bate, P.S. [Manchester Materials Science Centre, University of Manchester, Grosvenor Street, Manchester M1 7HS (United Kingdom)]. E-mail: pete.bate@man.ac.uk

2005-02-01T23:59:59.000Z

370

Progress on Production of Alpha-emitting Radioisotopes for Cancer...  

Office of Science (SC) Website

Progress on Production of Alpha-emitting Radioisotopes for Cancer Therapy Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Funding...

371

Superconducting calorimetric alpha particle sensors for nuclear nonproliferation applications  

Science Conference Proceedings (OSTI)

Identification of trace nuclear materials is usually accomplished by alpha spectrometry. Current detectors cannot distinguish critical elements and isotopes. We have developed a detector called a microcalorimeter

Robert D. Horansky; Joel N. Ullom; James A. Beall; Gene C. Hilton; Kent D. Irwin; Donald E. Dry; Elizabeth P. Hastings; Stephen P. Lamont; Clifford R. Rudy; Michael W. Rabin

2008-01-01T23:59:59.000Z

372

Modeling Dislocation Slip Transmission across Alpha-Beta Interface ...  

Science Conference Proceedings (OSTI)

After matching the two GSFs at the alpha-beta interface with Burgers orientation relationship, we perform microscopic phase field simulations. These simulations  ...

373

Analysis of alpha Centauri AB including seismic constraints  

E-Print Network (OSTI)

Detailed models of alpha Cen A and B based on new seismological data for alpha Cen B by Carrier & Bourban (2003) have been computed using the Geneva evolution code including atomic diffusion. Taking into account the numerous observational constraints now available for the alpha Cen system, we find a stellar model which is in good agreement with the astrometric, photometric, spectroscopic and asteroseismic data. The global parameters of the alpha Cen system are now firmly constrained to an age of t=6.52+-0.30 Gyr, an initial helium mass fraction Y_i=0.275+-0.010 and an initial metallicity (Z/X)_i=0.0434+-0.0020. Thanks to these numerous observational constraints, we confirm that the mixing-length parameter alpha of the B component is larger than the one of the A component, as already suggested by many authors (Noels et al. 1991, Fernandes & Neuforge 1995 and Guenther & Demarque 2000): alpha_B is about 8% larger than alpha_A (alpha_A=1.83+-0.10 and alpha_B=1.97+-0.10). Moreover, we show that asteroseismic measurements enable to determine the radii of both stars with a very high precision (errors smaller than 0.3%). The radii deduced from seismological data are compatible with the new interferometric results of Kervella et al. (2003) even if they are slightly larger than the interferometric radii (differences smaller than 1%).

P. Eggenberger; C. Charbonnel; S. Talon; G. Meynet; A. Maeder; F. Carrier; G. Bourban

2004-01-29T23:59:59.000Z

374

Climate VISION: Private Sector Initiatives: Forest Products: Resources and  

Office of Scientific and Technical Information (OSTI)

Resources & Links Resources & Links Technical Information Publications Case Studies Publications Agenda 2020: A Compact for the Forest Products Industry The Forest Products Programs is a voluntary collaborative effort between the forest products industry and DOE. The purpose of the Compact covering forest, wood, pulp, and paper is to provide the framework for identification of appropriate areas for joint research, development, and technology demonstration. The result will be a research partnership between DOE and industry. Energy Efficiency in the Pulp and Paper Industry, ACEEE 1996 This report was originally presented at the ACEEE Summer Study on Energy Efficiency in Industry: "Partnership, Productivity, and Environment," held in Grand Island, New York, on August 1-4, 1995.

375

Microsoft Word - Forest Grove Expansion I CX.doc  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

, 2011 , 2011 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Amit Sinha - TEP-CSB-2 Proposed Action: Forest Grove Substation Expansion Budget Information: Work Order # 255319 Task 03 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021: B4.6 "Additions or modifications to electric power transmission facilities..." Location: Washington County, OR - Section 32, Township 1 North, Range 3 West of the Forest Grove Quadrangle Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA is proposing to expand Forest Grove Substation located in Washington County, OR. The purpose of this project is to improve load service and reliability within the Portland vicinity as per the NERC reliability standards. Within the existing Forest Grove Substation, the

376

Thailand-Lowering Emissions in Asia's Forests (LEAF) | Open Energy  

Open Energy Info (EERE)

Thailand-Lowering Emissions in Asia's Forests (LEAF) Thailand-Lowering Emissions in Asia's Forests (LEAF) Jump to: navigation, search Name Thailand-Lowering Emissions in Asia's Forests (LEAF) Agency/Company /Organization United States Agency for International Development Sector Climate, Land Focus Area Biomass, Forestry Topics GHG inventory, Low emission development planning, -LEDS Resource Type Training materials Website http://www.snvworld.org/en/sec Country Thailand South-Eastern Asia References LEAF[1] "Lowering Emissions in Asia's Forests (LEAF), supported by USAID/RDMA, aims to strengthen the capacity of target countries to achieve meaningful and sustained reductions in GHG emissions from the forestry-land use sector while assisting them in benefitting from the emerging international REDD+

377

Quantifying Environmental Drivers of Future Tropical Forest Extent  

Science Conference Proceedings (OSTI)

Future changes in atmospheric greenhouse gas concentrations, and their associated influences on climate, will affect the future sustainability of tropical forests. While dynamic global vegetation models (DGVMs) represent the processes by which ...

Peter Good; Chris Jones; Jason Lowe; Richard Betts; Ben Booth; Chris Huntingford

2011-03-01T23:59:59.000Z

378

India-Legislation on Environment, Forests and Wildlife | Open Energy  

Open Energy Info (EERE)

Legislation on Environment, Forests and Wildlife Legislation on Environment, Forests and Wildlife Jump to: navigation, search Name India-Legislation on Environment, Forests and Wildlife Agency/Company /Organization Government of India Sector Land Topics Policies/deployment programs, Background analysis Website http://www.envfor.nic.in/legis Country India UN Region South-Eastern Asia References India-Legislation on Environment, Forests and Wildlife[1] Overview "Category Name Water Pollution Air Pollution Environment Protection Coastal Regulation Zone Delegation of Powers Eco-marks Scheme Eco-sensitive Zone Environmental Clearance - General Environmental Labs Environmental Standards Hazardous Substances Management Loss Of Ecology Noise Pollution Ozone Layer Depletion Water Pollution 2-T Oil Public Liability Insurance

379

Responsible Asia Forest Trade (RAFT) Program | Open Energy Information  

Open Energy Info (EERE)

Responsible Asia Forest Trade (RAFT) Program Responsible Asia Forest Trade (RAFT) Program Jump to: navigation, search Name Responsible Asia Forest Trade (RAFT) Program Agency/Company /Organization U.S. Agency for International Development Sector Land Focus Area Forestry Topics Policies/deployment programs Resource Type Lessons learned/best practices Website http://www.responsibleasia.org Country Cambodia, China, Indonesia, Laos, Malaysia, Papua New Guinea, Thailand, Vietnam UN Region Central Asia, Eastern Asia, South-Eastern Asia References Responsible Asia Forest Trade (RAFT) Program[1] "The Responsible Asia Forestry and Trade (RAFT) is a five-year program funded by the U.S. Agency for International Development Regional Development Mission for Asia (USAID RDMA) in Bangkok. RAFT is managed by

380

Cambodia-Lowering Emissions in Asia's Forests (LEAF) | Open Energy  

Open Energy Info (EERE)

Cambodia-Lowering Emissions in Asia's Forests (LEAF) Cambodia-Lowering Emissions in Asia's Forests (LEAF) Jump to: navigation, search Name Cambodia-Lowering Emissions in Asia's Forests (LEAF) Agency/Company /Organization United States Agency for International Development Sector Climate, Land Focus Area Biomass, Forestry Topics GHG inventory, Low emission development planning, -LEDS Resource Type Training materials Website http://www.snvworld.org/en/sec Country Cambodia South-Eastern Asia References LEAF[1] "Lowering Emissions in Asia's Forests (LEAF), supported by USAID/RDMA, aims to strengthen the capacity of target countries to achieve meaningful and sustained reductions in GHG emissions from the forestry-land use sector while assisting them in benefitting from the emerging international REDD+

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

CIFOR/ICRAF Forests and Climate Training | Open Energy Information  

Open Energy Info (EERE)

CIFOR/ICRAF Forests and Climate Training CIFOR/ICRAF Forests and Climate Training Jump to: navigation, search Tool Summary LAUNCH TOOL Name: CIFOR/ICRAF Forests and Climate Training Agency/Company /Organization: United States Agency for International Development, Center for International Forestry Research Sector: Land Focus Area: - Biofuels, Forestry, Offsets and Certificates Topics: Finance, Implementation, GHG inventory, Policies/deployment programs Resource Type: Training materials Website: www.cifor.cgiar.org/carbofor/projects/climate/CapacityBuildingWorkPlan CIFOR/ICRAF Forests and Climate Training Screenshot References: Carbofor Training [1] Purpose "To design and facilitate training workshops about how the trends relating to global climate change may affect USAID's ongoing and future

382

Benefits of Tropical Forest Management Under the New Climate Change  

Open Energy Info (EERE)

Benefits of Tropical Forest Management Under the New Climate Change Benefits of Tropical Forest Management Under the New Climate Change Agreement-A Case Study in Cambodia Jump to: navigation, search Name Benefits of Tropical Forest Management Under the New Climate Change Agreement-A Case Study in Cambodia Agency/Company /Organization United States Agency for International Development, Global Environment Facility, United Nations Development Programme Sector Land Focus Area Forestry Topics Policies/deployment programs, Background analysis Resource Type Lessons learned/best practices Website http://www.forestcarbonportal. Country Cambodia UN Region South-Eastern Asia References REDD Cambodia Case Study[1] Benefits of Tropical Forest Management Under the New Climate Change Agreement-A Case Study in Cambodia Screenshot

383

Vietnam-Lowering Emissions in Asia's Forests (LEAF) | Open Energy  

Open Energy Info (EERE)

Vietnam-Lowering Emissions in Asia's Forests (LEAF) Vietnam-Lowering Emissions in Asia's Forests (LEAF) Jump to: navigation, search Name Vietnam-Lowering Emissions in Asia's Forests (LEAF) Agency/Company /Organization United States Agency for International Development Sector Climate, Land Focus Area Biomass, Forestry Topics GHG inventory, Low emission development planning, -LEDS Resource Type Training materials Website http://www.snvworld.org/en/sec Country Vietnam South-Eastern Asia References LEAF[1] "Lowering Emissions in Asia's Forests (LEAF), supported by USAID/RDMA, aims to strengthen the capacity of target countries to achieve meaningful and sustained reductions in GHG emissions from the forestry-land use sector while assisting them in benefitting from the emerging international REDD+ framework.

384

Lowering Emissions in Asia's Forests (LEAF) | Open Energy Information  

Open Energy Info (EERE)

Lowering Emissions in Asia's Forests (LEAF) Lowering Emissions in Asia's Forests (LEAF) Jump to: navigation, search Name Lowering Emissions in Asia's Forests (LEAF) Agency/Company /Organization United States Agency for International Development Sector Climate, Land Focus Area Biomass, Forestry Topics GHG inventory, Low emission development planning, -LEDS Resource Type Training materials Website http://www.snvworld.org/en/sec Country Cambodia, Laos, Malaysia, Papua New Guinea, Thailand, Vietnam South-Eastern Asia, South-Eastern Asia, South-Eastern Asia, Melanesia, South-Eastern Asia, South-Eastern Asia References LEAF[1] "Lowering Emissions in Asia's Forests (LEAF), supported by USAID/RDMA, aims to strengthen the capacity of target countries to achieve meaningful and sustained reductions in GHG emissions from the forestry-land use sector

385

Seasonal Variations in Isoprene Emissions from a Boreal Aspen Forest  

Science Conference Proceedings (OSTI)

The primary objective of this study was to understand the environmental and seasonal controls over isoprene emissions from a boreal forest ecosystem whose isoprene source came from trees of the same species and age. A further objective was to ...

J. D. Fuentes; D. Wang; L. Gu

1999-07-01T23:59:59.000Z

386

Why Is Remote Sensing of Amazon Forest Greenness So Challenging?  

Science Conference Proceedings (OSTI)

The prevalence of clouds and aerosols and their impact on satellite-measured greenness levels of forests in southern and central Amazonia are explored in this article using 10 years of NASA Moderate Resolution Imaging Spectroradiometer (MODIS) ...

Arindam Samanta; Sangram Ganguly; Eric Vermote; Ramakrishna R. Nemani; Ranga B. Myneni

2012-06-01T23:59:59.000Z

387

Modeling Forest Cover Influences on Snow Accumulation, Sublimation, and Melt  

Science Conference Proceedings (OSTI)

A comprehensive, physically based model of snow accumulation, redistribution, sublimation, and melt for open and forested catchments was assembled, based on algorithms derived from hydrological process research in Russia and Canada. The model was ...

A. N. Gelfan; J. W. Pomeroy; L. S. Kuchment

2004-10-01T23:59:59.000Z

388

Ecohydrology of a seasonal cloud forest in Dhofar  

E-Print Network (OSTI)

The hydrology of a semiarid broadleaf forest in Dhofar (Oman) is investigated by performing a field experiment and a modeling study. Based on the results of the field experiment, the ecosystem in Dhofar is classified, for ...

Hildebrandt, Anke, 1975-

2005-01-01T23:59:59.000Z

389

Pennsylvania Farmland and Forest Land Assessment Act of 1974...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

of Land or Conveyance of Rights for Exploration or Extraction of Gas, Oil or Coal Bed Methane Pennsylvania Farmland and Forest Land Assessment Act of 1974 - Utilization of Land or...

390

A Climate Transect through Tropical Montane Rain Forest in Hawaii  

Science Conference Proceedings (OSTI)

Two years of climate data from a transect of three surface meteorological stations on the windward slopes of Mauna Loa, Hawaii, are analyzed. The stations constitute a transect between 700 and 1640 m through the wet, montane rain forest zone ...

James O. Juvik; Dennis Nullet

1994-11-01T23:59:59.000Z

391

Intraseasonal Interactions between Temperature and Vegetation over the Boreal Forests  

Science Conference Proceedings (OSTI)

This paper uses statistical and analytical techniques to investigate intraseasonal interactions between temperature and vegetation [surrogated by the normalized difference vegetation index (NDVI)] over the boreal forests. Results indicate that ...

Weile Wang; Bruce T. Anderson; Dara Entekhabi; Dong Huang; Yin Su; Robert K. Kaufmann; Ranga B. Myneni

2007-12-01T23:59:59.000Z

392

Norway-Indonesia-Forest Management Agreement | Open Energy Information  

Open Energy Info (EERE)

Norway-Indonesia-Forest Management Agreement Norway-Indonesia-Forest Management Agreement Jump to: navigation, search Name Norway-Indonesia-Forest Management Agreement Agency/Company /Organization Government of Norway, Government of Indonesia Sector Energy, Land Focus Area Forestry Topics Policies/deployment programs, Background analysis Website http://www.norway.or.id/Norway Country Norway, Indonesia UN Region South-Eastern Asia, Northern Europe References Norway-Indonesia REDD+ Partnership - Frequently asked questions[1] Letter of Intent[2] Background Letter of Intent FAQ's [Fact Sheet] Photo World Resources Institute: Susan Minnemeyer References ↑ "Norway-Indonesia REDD+ Partnership - Frequently asked questions" ↑ "Letter of Intent" Retrieved from "http://en.openei.org/w/index.php?title=Norway-Indonesia-Forest_Management_Agreement&oldid=374779"

393

Some numerical reslts on best uniform polynomial approximation of. chi. sup. alpha. on (0,1)  

Science Conference Proceedings (OSTI)

Let {alpha} be a positive number, and let E{sub n}(chi{sup {alpha}}; (0,1)) denote the error of best uniform approximation to {chi}{sup {alpha}}, by polynomials of degree at most n, on the interval (0,1). The Russian mathematician S.N. Bernstein established the existence of a nonnegative constant {Beta}({alpha}) such that {Beta}({alpha}):= {sub n{yields}{infinity}lim(2n){sup 2{alpha}}E{sub n}({chi}{sup {alpha}};(0.1)). In addition, Bernstein showed that {Beta}{alpha} 0) and that {Gamma}(2{alpha}){vert bar}sin({pi}{alpha}){vert bar}/{pi} (1{minus}1/2{alpha}{minus}1) {1/2}), so that the asymptotic behavior of {Beta}({alpha}) is known when {alpha}{yields}{infinity}. Still, the problem of trying to determine {Beta}({alpha}) more precisely, for all {alpha} > 0, is intriguing. To this end, we have rigorously determined the numbers for thirteen values of {alpha}, where these numbers were calculated with a precision of at least 200 significant digits. For each of these thirteen values of {alpha}, Richardson's extrapolation was applied to the products to obtain estimates of {Beta}({alpha}) to approximately 40 decimal places. Included are graphs of the points ({alpha},{Beta}({alpha})) for the thirteen values of {alpha} that we considered.

Carpenter, A.J.; Varga, R.S.

1992-01-01T23:59:59.000Z

394

Hand axes and Knives in the Forest Preserves  

NLE Websites -- All DOE Office Websites (Extended Search)

Hand axes and Knives in the Forest Preserves Hand axes and Knives in the Forest Preserves Nature Bulletin No. 16 May 26, 1945 Forest Preserve District of Cook County Clayton F. Smith, President Roberts Mann, Superintendent of Conservation HANDAXES AND KNIVES IN THE FOREST PRESERVES Handaxes and hunting-knives may not be carried in the forest preserves. The rangers must confiscate them wherever found. This rule is necessary because so many people in Cook County use these tools to damage or destroy trees and shrubs. In a county of 4 million people, mostly city people ignorant of how to conduct themselves in the woods, it is unfortunately necessary to make such rules to protect these forest preserves so that they will remain wild, unspoiled and beautiful. A real woodsman knows that he should not cut down a young tree or sapling for firewood. Green wood will not burn. A real woodsman knows that he should not strip the bark from a tree because then that tree will die. He knows that if a notch or deep blaze is made through the rough, protecting, outer bark, then there is created a place where rot and destructive insects can enter to eventually kill that tree.

395

Modest carbon price could save Borneo forests: study Reuters, 4 June 2009 -Tropical forests in Borneo under threat of conversion to palm oil  

E-Print Network (OSTI)

Modest carbon price could save Borneo forests: study Reuters, 4 June 2009 - Tropical forests if carbon credits were priced between $10 and $33 per tonne, a study has found. Forests soak up vast amounts of planet-warming carbon dioxide each year and are crucial in the fight to curb climate change. Many

396

China's trade in major forest products dips in first half of 2009 China's trade in major forest products dips in first half of 2009  

E-Print Network (OSTI)

China's trade in major forest products dips in first half of 2009 China's trade in major forest products dips in first half of 2009 21/08/2009 - 08:27 Affected by the global financial crisis, China from customs agencies shows the total trade value of forest products in China reached about USD26

397

Estimation of the North–South Transect of Eastern China forest biomass using remote sensing and forest inventory data  

Science Conference Proceedings (OSTI)

The assessment of forest biomass is required for the estimation of carbon sinks and a myriad other ecological and environmental factors. In this article, we combined satellite data Thematic Mapper TM and Moderate Resolution Imaging Spectrometer MODIS, ...

Yanhua Gao, Xinxin Liu, Chengcheng Min, Honglin He, Guirui Yu, Min Liu, Xudong Zhu, Qiao Wang

2013-08-01T23:59:59.000Z

398

Penn State Forest School Patch Penn State Forest School patches are pieces of art and mementos of time gone by.  

E-Print Network (OSTI)

) is one of four in this collection made of looped wool yarn (chenille). These patches were made old stock samples. This collection serves to preserve the history of the Forest School patch. A more

Boyer, Elizabeth W.

399

Forest products industry of the future: Building a sustainable technology advantage for America`s forest products industry  

Science Conference Proceedings (OSTI)

The US forest, wood, and paper industry ranks as one of the most competitive forest products industries in the world. With annual shipments valued at nearly $267 billion, it employs over 1.3 million people and is currently among the top 10 manufacturing employers in 46 out of 50 states. Retaining this leadership position will depend largely on the industry`s success in developing and using advanced technologies. These technologies will enable manufacturing plants and forestry enterprises to maximize energy and materials efficiency and reduce waste and emissions, while producing high-quality, competitively priced wood and paper products. In a unique partnership, leaders in the forest products industry have teamed with the US Department of Energy`s Office of Industrial Technologies (OIT) to encourage cooperative research efforts that will help position the US forest products industry for continuing prosperity while advancing national energy efficiency and environmental goals.

NONE

1999-02-01T23:59:59.000Z

400

Summary of alpha-neutron sources in GADRAS.  

SciTech Connect

A common source of neutrons for calibration and testing is alpha-neutron material, named for the alpha-neutron nuclear reaction that occurs within. This material contains a long-lived alpha-emitter and a lighter target element. When the alpha particle from the emitter is absorbed by the target, neutrons and gamma rays are released. Gamma Detector Response and Analysis Software (GADRAS) includes built-in alpha-neutron source definitions for AcC, AmB, AmBe, AmF, AmLi, CmC, and PuC. In addition, GADRAS users may create their own alpha-neutron sources by placing valid alpha-emitters and target elements in materials within their one-dimensional models (1DModel). GADRAS has the ability to use pre-built alpha-neutron sources for plotting or as trace-sources in 1D models. In addition, if any material (existing or user-defined) specified in a 1D model contains both an alpha emitter in conjunction with a target nuclide, or there is an interface between such materials, then the appropriate neutron-emission rate from the alpha-neutron reaction will be computed. The gamma-emissions from these sources are also computed, but are limited to a subset of nine target nuclides. If a user has experimental data to contribute to the alpha-neutron gamma emission database, it may be added directly or submitted to the GADRAS developers for inclusion. The gadras.exe.config file will be replaced when GADRAS updates are installed, so sending the information to the GADRAS developers is the preferred method for updating the database. This is also preferable because it enables other users to benefit from your efforts.

Mitchell, Dean James; Thoreson, Gregory G.; Harding, Lee T.

2012-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

R&D 100 Award for New NIST/UMD Neutron Detector  

Science Conference Proceedings (OSTI)

... Contact: Ben Stein 301-975-3097. NIST Lyman alpha neutron detector (LAND), shown with a US dollar coin for scale. Credit ...

2011-10-26T23:59:59.000Z

402

A Performance Evaluation of an Alpha EV7 Processing Node  

Science Conference Proceedings (OSTI)

In this paper we detail the performance of a new Alpha-Server node containing 16 Alpha EV7 CPUs. The EV7 processor is based on the EV68 processor core that is used in terascale systems at Los Alamos National Laboratory and the Pittsburgh Supercomputing ... Keywords: Performance, analysis, application performance, communication performance, high performance computing, memory performance

Darren J. Kerbyson; Adolfy Hoisie; Scott Pakin; Fabrizio Petrini; Harvey J. Wasserman

2004-05-01T23:59:59.000Z

403

TAE SATURATION OF ALPHA PARTICLE DRIVEN INSTABILITY IN TFTR \\Lambda  

E-Print Network (OSTI)

. B. White, Princeton Plasma Physics Laboratory Princeton University, Princeton, New Jersey 08543 H. L by the fusion produced alpha particles. In this paper we apply a recently developed nonlinear theory of kinetic induced by alpha particles includ­ ing FOW and FLR effects [8]. Additional calculation had been added

404

CRAD, Quality Assurance - Oak Ridge National Laboratory TRU ALPHA LLWT  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Quality Assurance - Oak Ridge National Laboratory TRU ALPHA Quality Assurance - Oak Ridge National Laboratory TRU ALPHA LLWT Project CRAD, Quality Assurance - Oak Ridge National Laboratory TRU ALPHA LLWT Project November 2003 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a November 2003 assessment of the Quality Assurance Program portion of an Operational Readiness Review of the Oak Ridge National Laboratory TRU ALPHA LLWT Project. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Quality Assurance - Oak Ridge National Laboratory TRU ALPHA LLWT Project More Documents & Publications

405

CRAD, Radiological Controls - Oak Ridge National Laboratory TRU ALPHA LLWT  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

TRU TRU ALPHA LLWT Project CRAD, Radiological Controls - Oak Ridge National Laboratory TRU ALPHA LLWT Project November 2003 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a November 2003 assessment of the Radiation Protection Program portion of an Operational Readiness Review of the Oak Ridge National Laboratory TRU ALPHA LLWT Project. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Radiological Controls - Oak Ridge National Laboratory TRU ALPHA LLWT Project More Documents & Publications CRAD, Quality Assurance - Oak Ridge National Laboratory TRU ALPHA LLWT

406

Effects of alpha populations on tokamak ballooning stability  

SciTech Connect

Fusion product alpha populations can significantly influence tokamak stability due to coupling between the trapped alpha precessional drift and the kinetic ballooning mode frequency. This effect is of particular importance in parameter regimes where the alpha pressure gradient begins to constitute a sizable fraction of the thermal plasma pressure gradient. Careful, quantitative evaluations of these effects are necessary in burning plasma devices such as the Tokamak Fusion Test Reactor and the Joint European Torus, and we have continued systematic development of such a kinetic stability model. In this model we have considered a range of different forms for the alpha distribution function and the tokamak equilibrium. Both Maxwellian and slowing-down models have been used for the alpha energy dependence while deeply trapped and, more recently, isotropic pitch angle dependence have been examined.

Spong, D.A.; Sigmar, D.J.; Tsang, K.T.; Ramos, J.J.; Hastings, D.E.; Cooper, W.A.

1986-01-01T23:59:59.000Z

407

The molecular biology and biochemistry of rice endosperm. alpha. -globulin  

SciTech Connect

The author's first objective was to isolate a cDNA clone that encodes the rice endosperm {alpha}-globulin. Purified antibodies against a rice storage protein, {alpha}-globulin, were used to screen a {lambda}gt11 cDNA expression library constructed from immature rice seed endosperm. The cDNA insert of clone 4A1 (identified by antibody screening) was used as a probe to identify long cDNA inserts in the library. The deduced amino acid sequence of clone A3-12 cDNA insert (identified by cDNA screening) contained the amino acid sequences of three cyanogen bromide peptides fragment of {alpha}-globulin. The calculated molecular weight and amino acid composition of the deduced amino acid sequence were similar to the {alpha}-globulin protein. Northern blot analysis indicated that mRNA of one size, approximately 1.0 kb, is expressed. Southern genomic blot analysis revealed one band with EcoRI or Hind III digestion. Cell-free translation and immunoprecipitation showed that the initial translation product is approximately 2,000 daltons larger than the mature protein. The amino acid sequence of {alpha}-globulin revealed limited regions of similarities with wheat storage proteins. The author concludes that the cDNA insert in clone A3-12 contained the entire coding region of {alpha}-globulin protein and that {alpha}-globulin is encoded by a single gene. My second objective was to inhibit the degradation of {alpha}-globulin in the salt extract of rice flour. The salt extract of rice flour contained an acid protease whose optimal pH was 3 for {sup 3}H-casein hydrolysis. A polypeptide with molecular weight of 20,000 was immunologically reactive with {alpha}-globulin antibodies and is produced by limited proteolysis in the extract. Pepstatin inhibited the proteolysis of 3H-casein and slowed the proteolysis of {alpha}-globulin.

Shorrosh, B.S.

1989-01-01T23:59:59.000Z

408

Effects of soil structure destruction on methane production and carbon partitioning between methanogenic pathways in tropical rain forest soils  

E-Print Network (OSTI)

weathered soils of Puerto Rico: 1. Morphology, formation andForest, Commonwealth of Puerto Rico (Interim Publica- tion),in subtropical forests in Puerto Rico, Biotropica, 27, 138 –

Teh, Y A; Silver, W L

2006-01-01T23:59:59.000Z

409

Some numerical reslts on best uniform polynomial approximation of {chi}{sup {alpha}} on [0,1  

SciTech Connect

Let {alpha} be a positive number, and let E{sub n}(chi{sup {alpha}}; [0,1]) denote the error of best uniform approximation to {chi}{sup {alpha}}, by polynomials of degree at most n, on the interval [0,1]. The Russian mathematician S.N. Bernstein established the existence of a nonnegative constant {Beta}({alpha}) such that {Beta}({alpha}):= {sub n{yields}{infinity}lim(2n){sup 2{alpha}}E{sub n}({chi}{sup {alpha}};[0.1]). In addition, Bernstein showed that {Beta}{alpha} < {Gamma}(2{alpha}){vert_bar}sin(pi}{alpha}){vert_bar}/{pi} ({alpha} > 0) and that {Gamma}(2{alpha}){vert_bar}sin({pi}{alpha}){vert_bar}/{pi} (1{minus}1/2{alpha}{minus}1) < {Beta}({alpha}) ({alpha} > {1/2}), so that the asymptotic behavior of {Beta}({alpha}) is known when {alpha}{yields}{infinity}. Still, the problem of trying to determine {Beta}({alpha}) more precisely, for all {alpha} > 0, is intriguing. To this end, we have rigorously determined the numbers for thirteen values of {alpha}, where these numbers were calculated with a precision of at least 200 significant digits. For each of these thirteen values of {alpha}, Richardson`s extrapolation was applied to the products to obtain estimates of {Beta}({alpha}) to approximately 40 decimal places. Included are graphs of the points ({alpha},{Beta}({alpha})) for the thirteen values of {alpha} that we considered.

Carpenter, A.J.; Varga, R.S.

1992-07-01T23:59:59.000Z

410

Agent Tcl: Alpha Release 1.1  

E-Print Network (OSTI)

Agent Tcl is a transportable agent system. The agents are written in an extended version of the Tool Command Lanuage (Tcl). Each agent can suspend its execution at an arbitrary point, transport to another machine and resume execution on the new machine. This migration is accomplished with the agent jump command. agent jump captures the current state of the Tcl script and transfers this state to the destination machine. The state is restored on the new machine and the Tcl script continues its execution from the command immediately after the agent jump. In addition to migration, agents can send messages to each other and can establish direct connections. A direct connection is more efficient than message passing for bulk data transfer. Finally, agents can use the Tk toolkit to create graphical user interfaces on their current machine. Agent Tcl is implemented as two components. The first component is an extended Tcl interpreter. The second component is a server which runs on each machine. The server accepts incoming agents, messages and connection requests and keeps track of the agents that are running on its machine. An alpha release of Agent Tcl is available for public use. This documentation describes how to obtain and compile the source code, how to run the server and how to write transportable agents.

Robert Gray Department; Robert S. Gray

1995-01-01T23:59:59.000Z

411

1. LEARNING FROM THE PIPER ALPHA  

E-Print Network (OSTI)

people and cost billions of dollars in property damage. It was caused by a massive fire, which was not the result of an unpredictable “act of God ” but of an accumulation of errors and questionable decisions. Most of them were rooted in the organization, its structure, procedures, and culture. This paper analyzes the accident scenario using the risk analysis framework, determines which human decision and actions influenced the occurrence of the basic events, and then identifies the organizational roots of these decisions and actions. These organizational factors are generalizable to other industries and engineering systems. They include flaws in the design guidelines and design practices (e.g., tight physical couplings or insufficient redundancies), misguided priorities in the management of the tradeoff between productivity and safety, mistakes in the management of the personnel on board, and errors of judgment in the process by which financial pressures are applied on the production sector (i.e., the oil companies ’ definition of profit centers) resulting in deficiencies in inspection and maintenance operations. This analytical approach allows identification of risk management measures that go beyond the purely technical (e.g., add redundancies to a safety system) and also include improvements of management practices. KEY WORDS: Piper Alpha accident; offshore platforms; human error; organizational errors; postmortem analysis; probabilistic risk analysis.

M. Elisabeth Patc-cornell

1992-01-01T23:59:59.000Z

412

Alpha migration through air filters: A numerical simulation  

Science Conference Proceedings (OSTI)

This theoretical study investigates the migration of alpha-emitting particles through high-efficiency particulate air (HEPA) filters. As part of the study, a review of previous research relating to the alpha-migration phenomena was conducted. As a result of the literature review, a numerical model was developed to simulate the migration of alpha-emitting radionuclide aerosols through HEPA filters. This model predicts the filter performance with regard to particle penetration. It can be used to better estimate the penetration of alpha radioactive species through filter systems for environmental concerns, to aid in the use of current filter systems, and to design new filter systems. It is obvious from the review of the literature that evidence exists of migration of alpha radionuclide species through high-efficiency filter media. The theories suggest that nanometer-size particles can eventually penetrate fibrous filters because of gradual movement through the filter matrix. It is conjectured that this movement may be induced by energies caused by the alpha recoil from the decay process by thermal energies. It is further hypothesized that such nanometer-size particles, containing radionuclide species can be formed from larger particles already captured within the filter. The penetration of such small particles through high-efficiency filter media is so low that experimental corroboration of these mechanisms by penetration measurements is difficult at best. A number of items were identified that affect the migration of alpha-emitting particles through a filter. These include the size distribution of aerosol particles entering the filter, the size distribution of fragment particles produced by alpha recoil, the penetration of the challenge aerosols and fragment particles, the velocity through the filter, the radionuclide specific activity, the alpha recoil energy, and the surface-binding energies between the particle and the filter matrix.

Biermann, A.H.; da Roza, R.A.; Chang, Yun.

1991-12-11T23:59:59.000Z

413

H{alpha} ABSORPTION IN TRANSITING EXOPLANET ATMOSPHERES  

SciTech Connect

Absorption of stellar H{alpha} by the upper atmosphere of the planet HD 189733b has recently been detected by Jensen et al. Motivated by this observation, we have developed a model for atomic hydrogen in the n = 2 state and compared the resulting H{alpha} line profile to the observations. The model atmosphere is in hydrostatic balance, as well as thermal and photoionization equilibrium. Collisional and radiative transitions are included in the determination of the n = 2 state level population. We find that H{alpha} absorption is dominated by an optical depth {tau} {approx} 1 shell, composed of hydrogen in the metastable 2s state that is located below the hydrogen ionization layer. The number density of the 2s state within the shell is found to vary slowly with radius, while that of the 1s state falls rapidly. Thus while the Ly{alpha} absorption, for a certain wavelength, occurs inside a relatively well defined impact parameter, the contribution to H{alpha} absorption is roughly uniform over the entire atomic hydrogen layer. The model can approximately reproduce the observed Ly{alpha} and H{alpha} integrated transit depths for HD 189733b by using an ionization rate enhanced over that expected for the star by an order of magnitude. For HD 209458b, we are unable to explain the asymmetric H{alpha} line profile observed by Jensen et al., as the model produces a symmetric line profile with transit depth comparable to that of HD 189733b. In an appendix, we study the effect of the stellar Ly{alpha} absorption on the net cooling rate.

Christie, Duncan; Arras, Phil; Li Zhiyun, E-mail: dac5zm@virginia.edu, E-mail: pla7y@virginia.edu, E-mail: zl4h@virginia.edu [Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904-4325 (United States)

2013-08-01T23:59:59.000Z

414

GRR/Section 3-FD-d - Forest Service Special Use Authorization | Open Energy  

Open Energy Info (EERE)

GRR/Section 3-FD-d - Forest Service Special Use Authorization GRR/Section 3-FD-d - Forest Service Special Use Authorization < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 3-FD-d - Forest Service Special Use Authorization 03-FD-d - Forest Service Special Use Authorization.pdf Click to View Fullscreen Regulations & Policies 36 CFR 251 Triggers None specified Click "Edit With Form" above to add content 03-FD-d - Forest Service Special Use Authorization.pdf 03-FD-d - Forest Service Special Use Authorization.pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Flowchart Narrative This flowchart illustrates the procedure for obtaining a special use authorization from the United States Forest Service (Forest Service). The

415

Measuring Woody Encroachment along a Forest–Savanna Boundary in Central Africa  

Science Conference Proceedings (OSTI)

Changes in net area of tropical forest are the sum of several processes: deforestation, regeneration of previously deforested areas, and the changing spatial location of the forest–savanna boundary. The authors conducted a long-term (1986–2006) ...

E. T. A. Mitchard; S. S. Saatchi; F. F. Gerard; S. L. Lewis; P. Meir

2009-08-01T23:59:59.000Z

416

Monitoring Selective Logging in Tropical Evergreen Forests Using Landsat: Multitemporal Regional Analyses in Mato Grosso, Brazil  

Science Conference Proceedings (OSTI)

Selective logging degrades tropical forests. Logging operations vary in timing, location, and intensity. Evidence of this land use is rapidly obscured by forest regeneration and ongoing deforestation. A detailed study of selective logging ...

Eraldo A. T. Matricardi; David L. Skole; Mark A. Cochrane; Jiaguo Qi; Walter Chomentowski

2005-11-01T23:59:59.000Z

417

Assessment of Tropical Forest Degradation with Canopy Fractional Cover from Landsat ETM+ and IKONOS Imagery  

Science Conference Proceedings (OSTI)

Tropical forests are being subjected to a wide array of disturbances in addition to outright deforestation. Selective logging is one of the most common disturbances ongoing in the Amazon, which results in significant changes in forest structure ...

Cuizhen Wang; Jiaguo Qi; Mark Cochrane

2005-10-01T23:59:59.000Z

418

Meteorological Impacts of Forest Mortality due to Insect Infestation in Colorado  

Science Conference Proceedings (OSTI)

Physical characteristics of forests and other ecosystems control land–atmosphere exchanges of water and energy and partly dictate local and regional meteorology. Insect infestation and resulting forest dieback can alter these characteristics and, ...

Christine Wiedinmyer; Michael Barlage; Mukul Tewari; Fei Chen

2012-02-01T23:59:59.000Z

419

Prediction of forest canopy light interception using three-dimensional airborne LiDAR data  

Science Conference Proceedings (OSTI)

The amount of light intercepted by forest canopies plays a crucial role in forest primary production. However, the photosynthetically active part of this intercepted solar radiation (IPAR) is difficult to measure using traditional ground-based techniques. ...

H. Lee; K. C. Slatton; B. E. Roth; W. P. Cropper

2009-01-01T23:59:59.000Z

420

Particle Physics Aspects of Antihydrogen Studies with ALPHA at CERN  

E-Print Network (OSTI)

We discuss aspects of antihydrogen studies, that relate to particle physics ideas and techniques, within the context of the ALPHA experiment at CERN's Antiproton Decelerator facility. We review the fundamental physics motivations for antihydrogen studies, and their potential physics reach. We argue that initial spectroscopy measurements, once antihydrogen is trapped, could provide competitive tests of CPT, possibly probing physics at the Planck Scale. We discuss some of the particle detection techniques used in ALPHA. Preliminary results from commissioning studies of a partial system of the ALPHA Si vertex detector are presented, the results of which highlight the power of annihilation vertex detection capability in antihydrogen studies.

Fujiwara, M C; Bertsche, W; Bowe, P D; Bray, C C; Butler, E; Cesar, C L; Chapman, S; Charlton, M; Fajans, J; Funakoshi, R; Gill, D R; Hangst, J S; Hardy, W N; Hayano, R S; Hayden, M E; Humphries, A J; Hydomako, R; Jenkins, M J; Jørgensen, L V; Kurchaninov, L; Lai, W; Lambo, R; Madsen, N; Nolan, P; Olchanski, K; Olin, A; Povilus, A; Pusa, P; Robicheaux, F; Sarid, E; Seif El Nasr, S; Silveira, D M; Storey, J W; Thompson, R I; Van der Werf, D P; Wasilenko, L; Wurtele, J S; Yamazaki, Y

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Selective flow path alpha particle detector and method of use  

DOE Patents (OSTI)

A method and apparatus for monitoring alpha contamination are provided in which ions generated in the air surrounding the item, by the passage of alpha particles, are moved to a distant detector location. The parts of the item from which ions are withdrawn can be controlled by restricting the air flow over different portions of the apparatus. In this way, detection of internal and external surfaces separately, for instance, can be provided. The apparatus and method are particularly suited for use in undertaking alpha contamination measurements during the commissioning operations.

Orr, Christopher Henry (Sellafield, Seascale, Cumbria, GB); Luff, Craig Janson (Sellafield, Seascale, Cumbria, GB); Dockray, Thomas (Sellafield, Seascale, Cumbria, GB); Macarthur, Duncan Whittemore (P.O. Box 1663, Los Alamos, NM 87545)

2002-01-01T23:59:59.000Z

422

Single and double grid long-range alpha detectors  

DOE Patents (OSTI)

Alpha particle detectors capable of detecting alpha radiation from distant sources. In one embodiment, a voltage is generated in a single electrically conductive grid while a fan draws air containing air molecules ionized by alpha particles through an air passage and across the conductive grid. The current in the conductive grid can be detected and used for measurement or alarm. Another embodiment builds on this concept and provides an additional grid so that air ions of both polarities can be detected. The detector can be used in many applications, such as for pipe or duct, tank, or soil sample monitoring.

MacArthur, Duncan W. (Los Alamos, NM); Allander, Krag S. (Ojo Caliente, NM)

1993-01-01T23:59:59.000Z

423

Single and double grid long-range alpha detectors  

DOE Patents (OSTI)

Alpha particle detectors capable of detecting alpha radiation from distant sources. In one embodiment, a voltage is generated in a single electrically conductive grid while a fan draws air containing air molecules ionized by alpha particles through an air passage and across the conductive grid. The current in the conductive grid can be detected and used for measurement or alarm. Another embodiment builds on this concept and provides an additional grid so that air ions of both polarities can be detected. The detector can be used in many applications, such as for pipe or duct, tank, or soil sample monitoring.

MacArthur, D.W.; Allander, K.S.

1993-03-16T23:59:59.000Z

424

Carbon Sequestration and Its Impacts on Forest Management in the Northeast Developed for the North East State Foresters Association  

E-Print Network (OSTI)

Disclaimer: This is not a position paper. It is intended to provide a factual basis for interested people in the NEFA region to discuss the carbon sequestration issue. Issues Discussions about forests and their relevance to the carbon sequestration issue are in their infancy. Definitions are varied, standards are not yet set, science is incomplete, and much deliberation ensues about fundamental components of the issue. As a result, the current debates are highly politicized and it is not even clear forum issues are to be worked on. Some debates are happening at the state legislative level, others within the Congress, while others still occur in international settings. Until some of the fundamental definitions and standards are set, there will be substantial politics associated with this issue. This paper attempts to separate current conjecture with fact, thereby allowing the reader to understand how best to begin discussions on the subject. NEFA’s Interest in Carbon Sequestration NEFA is most interested in encouraging better stewardship of the forests of Maine, New Hampshire, Vermont and New York. In that regard, the interest in carbon sequestration is focused on the role forests might play in the sequestering of carbon through forest management activities. Providing information to landowners and policy makers about which forest management activities sequester the most carbon is an important service to the landowners and society. NEFA will continue to keep current on the rapidly evolving carbon sequestration field in order to play this important role.

unknown authors

2002-01-01T23:59:59.000Z

425

Article Uncertainty of Forest Biomass Estimates in North Temperate Forests Due to Allometry: Implications for Remote Sensing  

E-Print Network (OSTI)

Abstract: Estimates of above ground biomass density in forests are crucial for refining global climate models and understanding climate change. Although data from field studies can be aggregated to estimate carbon stocks on global scales, the sparsity of such field data, temporal heterogeneity and methodological variations introduce large errors. Remote sensing measurements from spaceborne sensors are a realistic alternative for global carbon accounting; however, the uncertainty of such measurements is not well known and remains an active area of research. This article describes an effort to collect field data at the Harvard and Howland Forest sites, set in the temperate forests of the Northeastern United States in an attempt to establish ground truth forest biomass for calibration of remote sensing measurements. We present an assessment of the quality of ground truth biomass estimates derived from three different sets of diameter-based allometric equations over the Harvard and Howland Forests to establish the contribution of errors in ground truth data to the error in biomass estimates from remote sensing measurements.

Razi Ahmed; Paul Siqueira; Scott Hensley; Kathleen Bergen

2013-01-01T23:59:59.000Z

426

Climate VISION: Private Sector Initiatives: Forest Products: Technology  

Office of Scientific and Technical Information (OSTI)

Technology Pathways Technology Pathways AF&PA estimates that the forest products industry will reduce its greenhouse gas emissions intensity by 12% by 2012 relative to 2000 numbers. One of the main ways AF&PA anticipates that the industry will reduce its greenhouse gas emissions intensity is through implementation of new technologies from research and development programs. AF&PA has been participating in DOE's Industries of the Future program, a collaborative research and development partnership between DOE and the forest products industry. Through this program, AF&PA has participated in the development of a number of technologies aimed at cutting energy use, minimizing environmental impacts, and improving productivity in industry. If fully commercialized, these technologies could make the U.S. forest

427

Forest Grove Light and Power - Energy Efficiency Rebate Programs |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Forest Grove Light and Power - Energy Efficiency Rebate Programs Forest Grove Light and Power - Energy Efficiency Rebate Programs Forest Grove Light and Power - Energy Efficiency Rebate Programs < Back Eligibility Commercial Industrial Residential Savings Category Home Weatherization Commercial Weatherization Appliances & Electronics Sealing Your Home Ventilation Heating & Cooling Commercial Heating & Cooling Heat Pumps Water Heating Windows, Doors, & Skylights Maximum Rebate Air Sealing: $400 Duct Sealing: $500 Program Info State Oregon Program Type Utility Rebate Program Rebate Amount Heat Pump with Central Ducts (Replacement): $300 - $1,000 Heat Pump with Central Ducts (Furnace Conversion): $1,400 - $1,900 Heat Pump with Ductless System: $1,500 Clothes Washer: $20 - $70 Refrigerator: $25 Freezer: $25 Electric Water Heater: $25

428

Forest Tenure Reform in Vietnam | Open Energy Information  

Open Energy Info (EERE)

in Vietnam in Vietnam Jump to: navigation, search Name Forest Tenure Reform in Vietnam Agency/Company /Organization Regional Community Forestry Training Center for Asia and the Pacific Sector Land Focus Area Forestry Topics Resource assessment, Background analysis Resource Type Lessons learned/best practices Website http://recoftc.org/site/filead Country Vietnam UN Region South-Eastern Asia References Forest Tenure Reform in Vietnam[1] Forest Tenure Reform in Vietnam Screenshot Summary "This report presents a synthesis of findings from the two surveys undertaken in Dak Lak (by Dak Lak Department of Agriculture and Rural Development (DARD)) and Hoa Binh by VFU (See Annex A. for a list of members in the two research teams). It was prepared by Nguyen Quang Tan, Nguyen Ba

429

Ecological Study of the East Fork Ridge Mesic Forest Area  

NLE Websites -- All DOE Office Websites (Extended Search)

Appalachian Regional Commission/Oak Ridge National Laboratory Appalachian Regional Commission/Oak Ridge National Laboratory 2005 Math-Science-Technology Institute Oak Ridge, Tennessee Ecological Study of the East Fork Ridge Mesic Forest Area ARC Participants Darin Baugess Ben Mordan Debi Owens Yvonne Shafer Mentors Larry Pounds Harry Quarles Final Presentations Pollard Auditorium July 22, 2005 Ecological Study of the East Fork Ridge Mesic Forest Area Introduction: The Oak Ridge Reservation (ORR) consists of approximately 33,000 to 36,000 acres. This large forested area of land contains numerous unique habitats and communities that are disappearing from other areas in Tennessee and the Southeast US. In 2004 John Devereux Joslin, Jr. investigated one community in the north end of the Oak Ridge Reservation called the East

430

Nature Climate Change features Los Alamos forest research  

NLE Websites -- All DOE Office Websites (Extended Search)

Nature Climate Change Features Forest Research Nature Climate Change Features Forest Research Nature Climate Change features Los Alamos forest research The print issue features as its cover story the tree-stress research of LANL scientist A. Park Williams and partners from the U.S. Geological Survey, University of Arizona and several other organizations. February 27, 2013 Burned trees in the Jemez Mountains of New Mexico after the 2011 Las Conchas fire. Image by Craig D. Allen, USGS. Burned trees in the Jemez Mountains of New Mexico after the 2011 Las Conchas fire. Image by Craig D. Allen, USGS. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email New print edition of journal tags tree-stress project for cover story LOS ALAMOS, N.M., Feb. 27, 2013-The print issue of the journal Nature Climate Change released this week features as its cover story the

431

Pennsylvania Farmland and Forest Land Assessment Act of 1974 - Utilization  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Pennsylvania Farmland and Forest Land Assessment Act of 1974 - Pennsylvania Farmland and Forest Land Assessment Act of 1974 - Utilization of Land or Conveyance of Rights for Exploration or Extraction of Gas, Oil or Coal Bed Methane Pennsylvania Farmland and Forest Land Assessment Act of 1974 - Utilization of Land or Conveyance of Rights for Exploration or Extraction of Gas, Oil or Coal Bed Methane < Back Eligibility Utility Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Rural Electric Cooperative Transportation Program Info Start Date 2011 State Pennsylvania Program Type Siting and Permitting Provider Pennsylvania Department of Environmental Protection This act prescribes the procedure utilization of land or conveyance of rights for exploration or extraction of gas, oil or coal bed methane in

432

Agricultural and Forest Meteorology 150 (2010) 895907 Contents lists available at ScienceDirect  

E-Print Network (OSTI)

Ecology Research site established in 1989 in Petersham, MA. Harvard Forest (4232 N, 7211 W, elevation 340

Moorcroft, Paul R.

433

Modeling gross primary production of temperate deciduous broadleaf forest using satellite images and climate data  

E-Print Network (OSTI)

Oswald, Harvard Forest, Harvard University, PO Box 68, Petersham, MA 01366, USA (tel. +1 978 724 3302

New Hampshire, University of

434

Modeling nitrogen cycling in forested watersheds of Chesapeake Bay  

Science Conference Proceedings (OSTI)

The Chesapeake Bay Agreement calls for a 40% reduction of controllable phosphorus and nitrogen to the tidal Bay by the year 2000. To accomplish this goal the Chesapeake Bay Program needs accurate estimates of nutrient loadings, including atmospheric deposition, from various land uses. The literature was reviewed on forest nitrogen pools and fluxes, and nitrogen data from research catchments in the Chesapeake Basin were identified. The structure of a nitrogen module for forests is recommended for the Chesapeake Bay Watershed Model along with the possible functional forms for fluxes.

Hunsaker, C.T.; Garten, C.T.; Mulholland, P.J.

1995-03-01T23:59:59.000Z

435

Projections of Future Soil Temperature and Water Content for Three Southern Quebec Forested Sites  

Science Conference Proceedings (OSTI)

The impacts of climate change on future soil temperature Ts and soil moisture Ms of northern forests are uncertain. In this study, the authors first calibrated Ts and Ms models [Forest Soil Temperature Model (ForSTeM) and Forest Hydrology Model (...

Daniel Houle; Ariane Bouffard; Louis Duchesne; Travis Logan; Richard Harvey

2012-11-01T23:59:59.000Z

436

Developing a Sustainable Forest Biomass Industry: Case of the US Northeast  

E-Print Network (OSTI)

Developing a Sustainable Forest Biomass Industry: Case of the US Northeast D. Damery1 , J. Benjamin in renewable energy has produced a spate of new research into the feasibility of forest biomass as a feedstock, and social considerations that must be addressed in order to achieve a sustainable forest biomass industry

Schweik, Charles M.

437

1 A SUMMARY OF THE GREENHOUSE GAS IMPLICATIONS OF FOREST CARBON STORAGE  

E-Print Network (OSTI)

This chapter describes the development of material-specific estimates of changes in forest carbon storage in EPA’s Waste Reduction Model (WARM). It summarizes the approach used to estimate changes in forest carbon storage in managed forests resulting from source reduction and recycling of wood and paper products.

unknown authors

2012-01-01T23:59:59.000Z

438

Muhamad Tayyab Analysis of forest related development interventions in highland district of NWFP, Pakistan  

E-Print Network (OSTI)

, Pakistan Analysis of forest related development interventions in highland district of NWFP, Pakistan Summary Forests and rangelands in Pakistan provide important economic resources for the country as well as for the people living in the adjacent areas. Most of the natural forests of Pakistan are located

Richner, Heinz

439

Spatial analysis and delineation of ecological landtype phases for the Hoosier National Forest, Indiana, USA  

Science Conference Proceedings (OSTI)

The US Forest Service adopted the National Hierarchical Framework of Ecological Units in 1993 with the ecological landtype (ELT) and ecological landtype phase (ELTP) forming the lowest levels of the hierarchy. This study examines the potential of computer ... Keywords: Ecological landtypes, Forest ecosystems, Forest management, GIS, Landform mapping, Landscape analysis

Andriy V. Zhalnin; George R. Parker

2009-02-01T23:59:59.000Z

440

ELSEVIER Ecological Modelling 101 (1997) 61-78 Modeling nitrogen saturation in forest ecosystems in response  

E-Print Network (OSTI)

) and Harvard Forest (Petersham, MA). It is then used to predict transient responses in function resulting from, Petersham, MA. The validated model is then used to predict rates of change in N cycling and N leaching two sites, The Harvard Forest, Petersham, MA and The Hubbard Brook Experimental Forest, near West

New Hampshire, University of

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Economic Impacts of the Forest Industry in Florida, 2003 Final Report to the Florida Forestry Association  

E-Print Network (OSTI)

.......................................16 List of Tables Table ES-1. Florida forest industry groups surveyed, response rates, and reported .......................................................................15 Table 3.1. Florida forest industry survey responses and response rates was estimated at around 30 thousand jobs. Table ES-1. Florida forest industry groups surveyed, response rates

Florida, University of

442

Prescribed Burning Costs: Trends and Influences in the National Forest System1  

E-Print Network (OSTI)

Prescribed Burning Costs: Trends and Influences in the National Forest System1 David A. Cleaves,2 Service's National Forest System prescribed burning activity and costs are examined. Fuels management officers from 95 National Forests reported costs and acreage burned for 4 types of prescribed fire

Standiford, Richard B.

443

Methods of Using Alpha Channeling Together with Transformer Recharging |  

NLE Websites -- All DOE Office Websites (Extended Search)

Methods of Using Alpha Channeling Together with Transformer Recharging Methods of Using Alpha Channeling Together with Transformer Recharging A tokamak current can be sustained using rf waves for transformer recharging at low density and high-Z with high efficiency if the resistivity is kept high enough during the radio frequency recharging stage. At the same time, operation in the hot ion mode via alpha channeling increases the effective fusion reactivity. The two separate inventions can be made to work synergistically. Specifically, by operating the tokamak in a low-density recharge phase, the lower hybrid wave penetrates the plasma more effectively. High reactivity is obtained by operation in the hot ion mode through the alpha channeling technique. Then, by using a high temperature relaxation stage, not only is the plasma current sustained

444

City of Alpha, Minnesota (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

Alpha, Minnesota (Utility Company) Alpha, Minnesota (Utility Company) Jump to: navigation, search Name City of Alpha Place Minnesota Utility Id 266 Utility Location Yes Ownership M NERC Location MRO Activity Bundled Services Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Commercial Commercial Residential Residential Average Rates Residential: $0.0758/kWh Commercial: $0.0957/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=City_of_Alpha,_Minnesota_(Utility_Company)&oldid=409261" Categories:

445

Alpha-beta coordination method for collective search - Energy ...  

An agent in the alpha role is motivated to improve its status by exploring new regions of the search space. ... Solar Photovoltaic; Solar ... by the U.S. Department ...

446

The alpha-particle induced bystander effect for sister chromatid...  

NLE Websites -- All DOE Office Websites (Extended Search)

agents than typical FA cells. We studied the effects of low-dose alpha-particle irradiation-induced bystander effects in KO40 and control CHO cell lines. Cultures of G0...

447

Energetics of [alpha]-helix formation in peptides and proteins  

E-Print Network (OSTI)

This thesis focuses on the energetics of !-helix formation in peptides and proteins. The [alpha]-helix is the most prevalent type of secondary structure found in proteins, and has arguably dominated our thinking about ...

Schubert, Christian Reinhold

2009-01-01T23:59:59.000Z

448

Baroclinic Instabilities of the Two-Layer Quasigeostrophic Alpha Model  

Science Conference Proceedings (OSTI)

The class of alpha models for turbulence may be derived by applying Lagrangian averaging to the exact fluid equations and then making a closure approximation based on Taylor’s hypothesis of frozen-in fluctuations. This derivation provides a ...

Darryl D. Holm; Beth A. Wingate

2005-07-01T23:59:59.000Z

449

Labeled ALPHA4BETA2 ligands and methods therefor  

DOE Patents (OSTI)

Contemplated compositions and methods are employed to bind in vitro and in vivo to an .alpha.4.beta.2 nicotinic acetylcholine receptor in a highly selective manner. Where such compounds are labeled, compositions and methods employing such compounds can be used for PET and SPECT analysis. Alternatively, and/or additionally contemplated compounds can be used as antagonists, partial agonists or agonists in the treatment of diseases or conditions associated with .alpha.4.beta..beta.2 dysfunction.

Mukherjee, Jogeshwar; Pichika, Ramaiah; Potkin, Steven; Leslie, Frances; Chattopadhyay, Sankha

2013-02-19T23:59:59.000Z

450

H/sub. cap alpha. / studies on TFTR  

DOE Green Energy (OSTI)

H/sub ..cap alpha../ emission is a useful indicator of hydrogen ionization since the energy required to excite hydrogen to the n = 3 level is approximately the same as to ionize the hydrogen atom. Other aspects of recycling, such as plasma scrape-off parameters, wall particle fluxes, and wall retention rates can be inferred from spatial distributions of H/sub ..cap alpha../ emission. There are two H/sub ..cap alpha../ diagnostics on TFTF observing the inner limiter: a relatively calibrated wide-angle TV camera, and the absolutely calibrated HAIFA diagnostic, both viewing the inner limiter. H/sub ..cap alpha../ observations by these instruments have been analyzed using the DEGAS neutral transport code. The core recycling rate, and ion and neutral particle limiter fluxes, have been deduced from the calculations. The results are very sensitive to the ion flux distribution, and therefore also provide information on the plasma scrape-off conditions. A survey was made of over 500 TFTR discharges. H/sub ..cap alpha../ emission appears to increase in proportion to /bar n//sub e//sup 2/. The ratio of core ionization to average H/sub ..cap alpha../ emission was calculated to be roughly constant over a large range of discharges. 9 refs., 4 figs., 1 tab.

Heifetz, D.B.; Ehrhardt, A.B.; Ramsey, A.T.; Dylla, H.F.; Budny, R.; McNeill, D.; Medley, S.; Ulrickson, M.

1988-08-01T23:59:59.000Z

451

RAYLEIGH-TAYLOR STRENGTH EXPERIMENTS OF THE PRESSURE-INDUCED alpha->epsilon->alpha' PHASE TRANSITION IN IRON  

SciTech Connect

We present here the first dynamic Rayleigh-Taylor (RT) strength measurement of a material undergoing solid-solid phase transition. Iron is quasi-isentropically driven across the pressure-induced bcc ({alpha}-Fe) {yields} hcp ({var_epsilon}-Fe) phase transition and the dynamic strength of the {alpha}, {var_epsilon} and reverted {alpha}{prime} phases have been determined via proton radiography of the resulting Rayleigh-Taylor unstable interface between the iron target and high-explosive products. Simultaneous velocimetry measurements of the iron free surface yield the phase transition dynamics and, in conjunction with detailed hydrodynamic simulations, allow for determination of the strength of the distinct phases of iron. Forward analysis of the experiment via hydrodynamic simulations reveals significant strength enhancement of the dynamically-generated {var_epsilon}-Fe and reverted {alpha}{prime}-Fe, comparable in magnitude to the strength of austenitic stainless steels.

Belof, J L; Cavallo, R M; Olson, R T; King, R S; Gray, G T; Holtkamp, D B; Chen, S R; Rudd, R E; Barton, N R; Arsenlis, A; Remington, B A; Park, H; Prisbrey, S T; Vitello, P A; Bazan, G; Mikaelian, K O; Comley, A J; Maddox, B R; May, M J

2011-08-10T23:59:59.000Z

452

alpha_s and the tau hadronic width: fixed-order, contour-improved and higher-order perturbation theory  

E-Print Network (OSTI)

The determination of $\\alpha_s$ from hadronic $\\tau$ decays is revisited, with a special emphasis on the question of higher-order perturbative corrections and different possibilities of resumming the perturbative series with the renormalisation group: fixed-order (FOPT) vs. contour-improved perturbation theory (CIPT). The difference between these approaches has evolved into a systematic effect that does not go away as higher orders in the perturbative expansion are added. We attempt to clarify under which circumstances one or the other approach provides a better approximation to the true result. To this end, we propose to describe the Adler function series by a model that includes the exactly known coefficients and theoretical constraints on the large-order behaviour originating from the operator product expansion and the renormalisation group. Within this framework we find that while CIPT is unable to account for the fully resummed series, FOPT smoothly approaches the Borel sum, before the expected divergent behaviour sets in at even higher orders. Employing FOPT up to the fifth order to determine $\\alpha_s$ in the $\\MSb$ scheme, we obtain $\\alpha_s(M_\\tau)=0.320 {}^{+0.012}_{-0.007}$, corresponding to $\\alpha_s(M_Z) = 0.1185 {}^{+0.0014}_{-0.0009}$. Improving this result by including yet higher orders from our model yields $\\alpha_s(M_\\tau)=0.316 \\pm 0.006$, which after evolution leads to $\\alpha_s(M_Z) = 0.1180 \\pm 0.0008$. Our results are lower than previous values obtained from $\\tau$ decays.

Martin Beneke; Matthias Jamin

2008-06-19T23:59:59.000Z

453

UNDERSTORY LIGHT AND VEGETATION IN TWO FLOODPLAIN FORESTS  

E-Print Network (OSTI)

characteristics on a systematic grid and generated maps of understory light transmission. Both sites have 92% area, understory composition varies over short distances in correlation with light transmission. Shrub cover; this prediction should be evaluated experimentally. Keywords: riparian forest; canopy gaps; light transmission

454

Effect of Larch Forest Density on Snow Surface Energy Balance  

Science Conference Proceedings (OSTI)

It is established that the density of a larch forest strongly influences the snowmelt energy under its canopy. In the spring thaw of 1994, 1995, and 1996, the surface snowmelt at three different sites located at the southern foot of Mt. Iwate, ...

Kazuyoshi Suzuki; Takeshi Ohta

2003-12-01T23:59:59.000Z

455

Solar energy at Forest Research Solar Power at Alice Holt  

E-Print Network (OSTI)

Solar energy at Forest Research Solar Power at Alice Holt research station provides a renewable to install a solar photovoltaic system to meet some of the research station's energy needs. #12;In January dioxide emissions, when compared with traditional forms of energy generation. · The solar installation

456

Wisconsin’s Forest Products Industry Business Climate Status Report  

E-Print Network (OSTI)

Wisconsin’s Center for Technology Transfer (CTT) is a non-profit, non-stock corporation with a mission of accelerating investments in energy efficient, environmentally friendly technologies into Wisconsin industry clusters. CTT was awarded its mission in February of 2002 by the Focus on Energy program, which identified the energy intensive, economically important industry clusters whose needs for advanced technology transfer could be served by the CTT. These clusters are Forest Products, Metal Casting, Food Processing, Printing, Glass, Biobased Products & Energy, Water & Wastewater, and Utilities. Technology roadmaps had been developed for each industry cluster through U.S. Department of Energy grants and by Focus on Energy. However, a more in-depth understanding of critical issues facing industry clusters was still needed. CTT, in a joint effort with the U.S. Forest Products Laboratory (FPL) in Madison, initiated issue scoping sessions for the Forest Products cluster. One-on-one meetings with senior executives of Wisconsin forest products companies were conducted to assess the current state and future potentials of the industry group. The findings of these sessions document a litany of challenges facing the industry and are summarized at the end of this report. Many of these challenges and the potential for investments in new technologies were

unknown authors

2004-01-01T23:59:59.000Z

457

Gravity Waves in a Forest: A Linear Analysis  

Science Conference Proceedings (OSTI)

Wavelike oscillations are a common form of air motion in the forest canopy at night. This paper investigates the canopy wave phenomenon using a two-dimensional inviscid linear wave model taking into account the drag force exerted on the wave wind ...

Xuhui Lee

1997-11-01T23:59:59.000Z

458

Controls on Evaporation in a Boreal Spruce Forest  

Science Conference Proceedings (OSTI)

The surface energy balance over a boreal spruce forest is analyzed using 3 yr of 30-min-averaged data collected during the 1994–96 Boreal Ecosystem–Atmosphere Study experiment 40 km west of Thompson, Manitoba, to show the climatic controls on ...

Alan K. Betts; Mike Goulden; Steve Wofsy

1999-06-01T23:59:59.000Z

459

Forests and Water: A State-of-the-Art Review  

E-Print Network (OSTI)

of Colorado's runoff. Aerial photo of a portion of the Coon Creek experimental watershed in south, Geological Survey, through the Colorado Water Resources Research Institute and Grant No. 01HQGR0077Forests and Water: A State-of-the-Art Review for Colorado Lee H. MacDonald and John D. Stednick

MacDonald, Lee

460

Albedo Following Fire in a Northern Hardwood Forest  

Science Conference Proceedings (OSTI)

Changes in albedo were tracked following fire on 18 August 1980 in a successional hardwood forest in northern lower Michigan (43°33?N, 84°42?W). Shortwave albedo (300–3000 nm) changed little with zenith angle up to 55°, but then increased ...

Thomas W. Jurik; David M. Gates

1983-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Use of lidar data to simulate forest net primary production  

Science Conference Proceedings (OSTI)

A method has been recently presented to predict the net primary production NPP of Mediterranean forests by integrating conventional and remote-sensing data. This method was based on the use of two models, C-Fix and BIOME-BGC, whose outputs are combined ...

Fabio Maselli; Riccardo Mari; Marta Chiesi

2013-04-01T23:59:59.000Z

462

Classification of Commodity Price Forecast With Random Forests and Bayesian  

E-Print Network (OSTI)

Classification of Commodity Price Forecast Sentiment With Random Forests and Bayesian Optimization, Morgan Stanley or Merrill Lynch produce24 price forecasting and reports to predict the direction on the sentiment of price39 forecasts and reports for commodities such as gold, natural gas or most commonly oil

de Freitas, Nando

463

Tropical Forest Fragments Enhance Pollinator Activity in Nearby Coffee Crops  

E-Print Network (OSTI)

accounted for >90% of all floral visits in distant sites. The gradient from the riparian strip showed visitation rates by over 50% in distant sites (where Apis was almost the only pollinator). In near sites dependence on a single introduced pollinator. Exploring the economic links between forest preservation

Vermont, University of

464

HORTICULTURAL & FOREST CROPS 2012 Floral Crops: Insects 5-19  

E-Print Network (OSTI)

. In order to use a pesticide safely and effectively, the product label should be read thoroughly each time. Effective application of pesticides depends on: proper timing, favorable treatment conditions of temperature;HORTICULTURAL & FOREST CROPS 2012 5-20 Floral Crops: Insects · Apply pesticides when foliage is dry

Liskiewicz, Maciej

465

Estimating Carbon Supply Curves for Global Forests and Other Land Uses |  

Open Energy Info (EERE)

Estimating Carbon Supply Curves for Global Forests and Other Land Uses Estimating Carbon Supply Curves for Global Forests and Other Land Uses Jump to: navigation, search Tool Summary Name: Estimating Carbon Supply Curves for Global Forests and Other Land Uses Agency/Company /Organization: Resources for the Future Sector: Land Focus Area: Forestry, Agriculture Topics: GHG inventory, Resource assessment Resource Type: Guide/manual Website: www.rff.org/documents/RFF-DP-01-19.pdf Estimating Carbon Supply Curves for Global Forests and Other Land Uses Screenshot References: Estimating Carbon Supply Curves for Global Forests and Other Land Uses[1] Abstract "This study develops cumulative carbon "supply curves" for global forests utilizing an dynamic timber supply model for sequestration of forest carbon. Because the period of concern is the next century, and

466

Mexico-US Forest Service Climate Change Technical Cooperation | Open Energy  

Open Energy Info (EERE)

Mexico-US Forest Service Climate Change Technical Cooperation Mexico-US Forest Service Climate Change Technical Cooperation Jump to: navigation, search Name Mexico-US Forest Service Climate Change Technical Cooperation Agency/Company /Organization United States Forest Service Sector Land Focus Area Forestry Topics Background analysis Website http://www.fs.fed.us/global/to Country Mexico Central America References US Forest Service Climate Change Technical Cooperation[1] "For more than ten years, the US Forest Service has collaborated with the Government of Mexico to provide forest management training and has fostered many opportunities to share the Mexican case study with international groups. The result has often been to inspire innovative incentives that serve multiple purposes: halting deforestation, improving both watershed

467

Phytomass change in the mountain forests of southern Siberia under climate warming  

NLE Websites -- All DOE Office Websites (Extended Search)

Phytomass change in the mountain forests of southern Siberia Phytomass change in the mountain forests of southern Siberia under climate warming Nadja M. Tchebakova (E-mail: ncheby@forest.akadem.ru) V.N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia. Robert A. Monserud (E-mail: rmonserud@fs.fed.us; Ph: +1-503-808-2059; Fax: +1-503-808- 2020) Rocky Mountain and Pacific Northwest Research Stations, USDA Forest Service, P.O. Box 3890, Portland, OR 97208-3890 USA. Corresponding author. Elena I. Parfenova (E-mail: lyeti@forest.akadem.ru) V.N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia. 28 February 2001 Abstract. Introduction: Mitigation of climate warming is related to carbon sequestration in vegetation

468

Forest Productivity and Diversity: Using Ecological Theory and Landscape Models to Guide Sustainable Forest Management  

Science Conference Proceedings (OSTI)

Sustainable forest management requires maintaining or increasing ecosystem productivity, while preserving or restoring natural levels of biodiversity. Application of general concepts from ecological theory, along with use of mechanistic, landscape-based computer models, can contribute to the successful achievement of both of these objectives. Ecological theories based on the energetics and dynamics of populations can be used to predict the general distribution of individual species, the diversity of different types of species, ecosystem process rates and pool sizes, and patterns of spatial and temporal heterogeneity over a broad range of environmental conditions. This approach requires subdivision of total biodiversity into functional types of organisms, primarily because different types of organisms respond very differently to the spatial and temporal variation of environmental conditions on landscapes. The diversity of species of the same functional type (particularly among plants) tends to be highest at relatively low levels of net primary productivity, while the total number of different functional types (particularly among animals) tends to be highest at high levels of productivity (e.g., site index or potential net primary productivity). In general, the diversity of animals at higher trophic levels (e.g., predators) reaches its maximum at much higher levels of productivity than the diversity of lower trophic levels (e.g., plants). This means that a single environment cannot support high diversity of all types of organisms. Within the framework of the general patterns described above, the distributions, population dynamics, and diversity of organisms in specific regions can be predicted more precisely using a combination of computer simulation models and GIS data based on satellite information and ground surveys. Biophysical models that use information on soil properties, climate, and hydrology have been developed to predict how the abundance and spatial distribution of various plants and animals. These models can be, used to predict the patterns of forest type and structure that develop in response to variation in productivity and disturbance across complex landscapes, as well as species diversity and the distribution and population fluctuations of threatened species in specific regions.

Huston, M.A.

1998-11-01T23:59:59.000Z

469

Climate change and forests in India: note from the guest editors  

DOE Green Energy (OSTI)

Forestry is one of the most important sectors in the context of climate change. It lies at the center-stage of global mitigation and adaptation efforts. Yet, it is one of the least understood sectors, especially in tropical zones, which constitute a significant portion of the global forests. Recently, there has been a growing interest in forests in addressing global climate change. The IPCC Assessment Report 4 (2007) Chapters related to forests have highlighted the limited number of studies on the impact of climate change on forests at the regional, national and sub-national level, while policy makers need information at these scales. Further, implication of projected climate change on mitigation potential of forest sector is only briefly mentioned in the IPCC report, with limited literature to support the conclusions. India is one among the top ten nations in the world in terms of forest cover. It is also sixth among the tropical countries in terms of forested area. As IPCC Assessment Report 5 work is about to be initiated soon, studies on the impact of climate change on forests as well as the mitigation potential of the forest sector, particularly at regional and national level, will be of great interest to the scientific and policy community. In order to conserve the carbon stored in forests and to reduce CO2 emissions from the forest sector, the Reduced Emissions from Deforestation and Degradation (REDD) mechanism is now being finalized under the UNFCCC. In this context, climate change itself may affect the mitigation potential significantly, and it is important to understand how vulnerable the forest carbon stock (biomass and soil) in the tropics is to the projected climate change. In fact, there is a need to study the impact of climate change on forests for all the major forested countries

Ravindtranath, N.H.; Aaheim, Asbjporn

2010-12-23T23:59:59.000Z

470

Alpha-beta coordination method for collective search  

DOE Patents (OSTI)

The present invention comprises a decentralized coordination strategy called alpha-beta coordination. The alpha-beta coordination strategy is a family of collective search methods that allow teams of communicating agents to implicitly coordinate their search activities through a division of labor based on self-selected roles and self-determined status. An agent can play one of two complementary roles. An agent in the alpha role is motivated to improve its status by exploring new regions of the search space. An agent in the beta role is also motivated to improve its status, but is conservative and tends to remain aggregated with other agents until alpha agents have clearly identified and communicated better regions of the search space. An agent can select its role dynamically based on its current status value relative to the status values of neighboring team members. Status can be determined by a function of the agent's sensor readings, and can generally be a measurement of source intensity at the agent's current location. An agent's decision cycle can comprise three sequential decision rules: (1) selection of a current role based on the evaluation of the current status data, (2) selection of a specific subset of the current data, and (3) determination of the next heading using the selected data. Variations of the decision rules produce different versions of alpha and beta behaviors that lead to different collective behavior properties.

Goldsmith, Steven Y. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

471

Transcriptional regulation of human retinoic acid receptor-alpha (RAR-{alpha}) by Wilms` tumour gene product  

SciTech Connect

The Wilms` tumor gene encodes a 47-49 kDa transcription factor expressed in kidney, gonads and mesothelium during embryogenesis. Inherited mutations of WT1 lead to aberrant urogenital development and Wilms` tumor, but the role of WT1 in development is not fully understood. Since the human RAR-{alpha} gene contains a potential WT1 binding site at its 5{prime} end, we studied the effect of WT1 co-transfection on expression of an RAR-{alpha} promoter/CAT reporter construct in COS cells. COS cells were plated at 5X10{sup 5} cells/dish in DMEM with 10% FBS and transfected by the Ca/PO4 method with an expression plasmid containing the full-length WT1 (-/-) cDNA under the control of the CMV promoter, plasmid containing the RAR-{alpha} promoter (-519 to +36)/CAT reporter and TK/growth hormone plasmid to control for efficiency of transfection. CAT/GH activity at 48 hours was inhibited by co-transfection with increasing amounts of WT1 (-/-); maximum inhibition = 5% of control. WT1 co-transfection did not affect expression of TKGH, nor of a CMV-CAT vector. Expression of WT1 protein in tranfected COS cells was demonstrated by Western blotting. Minimal inhibiton of RAR-{alpha}/CAT activity was seen when cells were co-transfected with vectors containing WT1 deletion mutants, alternate WT1 splicing variants, or WT1 (-/-) cDNA bearing a mutation identified in a patient with Drash syndrome. Gel shift assays indicated binding of WT1 to RAR-{alpha} cDNA but not to an RAR-{alpha} deletion mutant lacking the GCGGGGGGCG site. These observations suggest that WT1 may function to regulate RAR-{alpha} expression during normal development.

Goodyer, P.R.; Torban, E.; Dehbi, M. [and others

1994-09-01T23:59:59.000Z

472

The Wisconsin H-Alpha Mapper Northern Sky Survey  

E-Print Network (OSTI)

The Wisconsin H-Alpha Mapper (WHAM) has completed a survey in Balmer Alpha of the entire Northern sky above declination -30 deg. This survey provides the first calibrated, velocity-resolved map of the H-Alpha emission from the Galaxy. With one-degree spatial resolution, 12 km s^{-1} velocity resolution, and sensitivity to features as faint as 0.1 R (EM ~ 0.2 cm^{-6} pc), this survey provides the deepest maps of the ionized content of the Galaxy to date. In addition to probing the detailed kinematic structure of the Warm Ionized Medium and the vertical structure of the ionized content in spiral arms, initial results include the discovery of several faint, extended (d > 1\\deg) H II regions and the first map of the ionized component of an intermediate velocity cloud.

L. M. Haffner

2000-10-04T23:59:59.000Z

473

Apparatus for detecting alpha radiation in difficult access areas  

DOE Patents (OSTI)

An electrostatic alpha radiation detector for measuring alpha radiation emitted from inside an enclosure comprising an electrically conductive expandable electrode for insertion into the enclosure. After insertion, the electrically conductive expandable electrode is insulated from the enclosure and defines a decay cavity between the electrically conductive expandable electrode and the enclosure so that air ions generated in the decay cavity are electrostatically captured by the electrically conductive expandable electrode and the enclosure when an electric potential is applied between the electrically conductive expandable electrode and the enclosure. Indicator means are attached to the electrically conductive expandable electrode for indicating an electrical current produced by generation of the air ions generated in the decay cavity by collisions between air molecules and the alpha particles emitted from the enclosure. A voltage source is connected between the indicator means and the electrically conductive enclosure for creating an electric field between the electrically conductive expandable electrode and the enclosure.

Steadman, Peter (Santa Fe, NM); MacArthur, Duncan W. (Los Alamos, NM)

1997-09-02T23:59:59.000Z

474

Colorado Bark Beetle Mitigation Fund Helps Our Future Forests 1.5 Million Acres of Colorado's Forests Affected by Mountain Pine Beetle  

E-Print Network (OSTI)

long-term sustainable forest management to reduce the impacts of insect and disease outbreaks started, MPB has killed most of the mature pines and beetle populations have decreased. The Real Costs the cost of managing our forests. The role of CSFS is to treat priority acres on state and private lands

475

Some numerical reslts on best uniform polynomial approximation of {chi}{sup {alpha}} on [0,1  

Science Conference Proceedings (OSTI)

Let {alpha} be a positive number, and let E{sub n}(chi{sup {alpha}}; [0,1]) denote the error of best uniform approximation to {chi}{sup {alpha}}, by polynomials of degree at most n, on the interval [0,1]. The Russian mathematician S.N. Bernstein established the existence of a nonnegative constant {Beta}({alpha}) such that {Beta}({alpha}):= {sub n{yields}{infinity}lim(2n){sup 2{alpha}}E{sub n}({chi}{sup {alpha}};[0.1]). In addition, Bernstein showed that {Beta}{alpha} 0) and that {Gamma}(2{alpha}){vert_bar}sin({pi}{alpha}){vert_bar}/{pi} (1{minus}1/2{alpha}{minus}1) {1/2}), so that the asymptotic behavior of {Beta}({alpha}) is known when {alpha}{yields}{infinity}. Still, the problem of trying to determine {Beta}({alpha}) more precisely, for all {alpha} > 0, is intriguing. To this end, we have rigorously determined the numbers for thirteen values of {alpha}, where these numbers were calculated with a precision of at least 200 significant digits. For each of these thirteen values of {alpha}, Richardson`s extrapolation was applied to the products to obtain estimates of {Beta}({alpha}) to approximately 40 decimal places. Included are graphs of the points ({alpha},{Beta}({alpha})) for the thirteen values of {alpha} that we considered.

Carpenter, A.J.; Varga, R.S.

1992-07-01T23:59:59.000Z

476

Alpha low-level stored waste systems design study  

SciTech Connect

The Stored Waste System Design Study (SWSDS), commissioned by the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examines relative life-cycle costs associated with three system concepts for processing the alpha low-level waste (alpha-LLW) stored at the Radioactive Waste Management Complex`s Transuranic Storage Area at the INEL. The three system concepts are incineration/melting; thermal treatment/solidification; and sort, treat, and repackage. The SWSDS identifies system functional and operational requirements and assesses implementability; effectiveness; cost; and demonstration, testing, and evaluation (DT&E) requirements for each of the three concepts.

Feizollahi, F.; Teheranian, B. [Morrison Knudson Corp., San Francisco, CA (United States). Environmental Services Div.; Quapp, W.J. [EG and G Idaho, Inc., Idaho Falls, ID (United States)

1992-08-01T23:59:59.000Z

477

Alpha low-level stored waste systems design study  

SciTech Connect

The Stored Waste System Design Study (SWSDS), commissioned by the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examines relative life-cycle costs associated with three system concepts for processing the alpha low-level waste (alpha-LLW) stored at the Radioactive Waste Management Complex's Transuranic Storage Area at the INEL. The three system concepts are incineration/melting; thermal treatment/solidification; and sort, treat, and repackage. The SWSDS identifies system functional and operational requirements and assesses implementability; effectiveness; cost; and demonstration, testing, and evaluation (DT E) requirements for each of the three concepts.

Feizollahi, F.; Teheranian, B. (Morrison Knudson Corp., San Francisco, CA (United States). Environmental Services Div.); Quapp, W.J. (EG and G Idaho, Inc., Idaho Falls, ID (United States))

1992-08-01T23:59:59.000Z

478

Humidity response of the Eberline model PAC-7 alpha instrument  

SciTech Connect

Response of the Eberline Model PAC-7 alpha instrument under varying relative humidity (RH) and temperature conditions was studied in an environmental chamber. Electric discharges resulting in spurious counts or in instrument paralysis occurred at 35 to 50% RH. Improvement in the RH level tolerated by the PAC-7 alpha instrument was obtained by conformal coating of the high-voltage region of the printed circuit (PC) board. Following this treatment, electric discharges occurred only at relatively high humidity levels and then as a result of high-voltage breakdown within the AC-24C probe rather than within the PC board.

McAtee, J.L.

1981-04-01T23:59:59.000Z

479

First-principles elastic properties of (alpha)-Pu  

SciTech Connect

Density-functional electronic structure calculations have been used to investigate the ambient pressure and low temperature elastic properties of the ground-state {alpha} phase of plutonium metal. The electronic structure and correlation effects are modeled within a fully relativistic anti-ferromagnetic treatment with a generalized gradient approximation for the electron exchange and correlation functionals. The 13 independent elastic constants, for the monoclinic {alpha}-Pu system, are calculated for the observed geometry. A comparison of the results with measured data from resonant ultrasound spectroscopy for a cast sample is made.

Soderlind, P; Klepeis, J E

2008-11-04T23:59:59.000Z

480

NPP Tropical Forest: San Carlos De Rio Negro, Venezuela  

NLE Websites -- All DOE Office Websites (Extended Search)

San Carlos De Rio Negro, Venezuela, 1975-1984 San Carlos De Rio Negro, Venezuela, 1975-1984 [PHOTOGRAPH] Photograph: Cutting an experimental plot at San Carlos (click on the photo to view a series of images and a diagram of this site) Data Citation Cite this data set as follows: Jordan, C. F., E. Cuevas, and E. Medina. 1999. NPP Tropical Forest: San Carlos de Rio Negro, Venezuela, 1975-1984. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of tropical forest was determined for a number of vegetation-soil associations at the San Carlos de Rio Negro study site, under the auspices of an international UNESCO Man and the Biosphere (MAB) project. The San Carlos study site (1.93 N 67.05 W) is situated 4 km east of the

Note: This page contains sample records for the topic "lyman alpha forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Forest County, Wisconsin: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Forest County, Wisconsin: Energy Resources Forest County, Wisconsin: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 45.6704497°, -88.8375807° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.6704497,"lon":-88.8375807,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

482

Black Forest, Colorado: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Forest, Colorado: Energy Resources Forest, Colorado: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 39.0130484°, -104.7008083° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.0130484,"lon":-104.7008083,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

483

Roman Forest, Texas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Roman Forest, Texas: Energy Resources Roman Forest, Texas: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 30.1791039°, -95.1624323° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"