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Note: This page contains sample records for the topic "liquid nitrogen ice" 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.


1

Frostbite Theater - Liquid Nitrogen Experiments - Dry Ice vs. Liquid  

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

Egg + Liquid Nitrogen + Time-lapse! Egg + Liquid Nitrogen + Time-lapse! Previous Video (Egg + Liquid Nitrogen + Time-lapse!) Frostbite Theater Main Index Next Video (Liquid Nitrogen Cooled Dry Ice in Water!) Liquid Nitrogen Cooled Dry Ice in Water! Dry Ice vs. Liquid Nitrogen! Dry ice is cold. Liquid nitrogen is cold, too. What happens when the two are mixed together? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: Have you ever wondered what happens when you mix dry ice and liquid nitrogen? Steve: Well, we just happen to have a chunk of dry ice left over from when we filmed 'How to Make a Cloud Chamber,' and here at Jefferson Lab, liquid nitrogen flows like water, so we're going to find out!

2

Frostbite Theater - Just for Fun - How to Make Liquid Nitrogen Ice Cream  

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

The Total Lunar Eclipse of December 21, 2010 The Total Lunar Eclipse of December 21, 2010 Previous Video (The Total Lunar Eclipse of December 21, 2010) Frostbite Theater Main Index Next Video (Liquid Nitrogen Viewer Requests!) Liquid Nitrogen Viewer Requests! How to Make Liquid Nitrogen Ice Cream What do you do if you need to make ice cream in a hurry? Liquid nitrogen to the rescue! [ Show Transcript ] Steve: Okay! So, We are here at Jefferson Lab and it's about 100 degrees outside and we though "Why not make a little bit of ice cream?" Now, of course we don't have a lot of ice cream on hand, but we do have half-and-half, sugar and vanilla and, since we are at Jefferson Lab where we have a superconductive accelerator, we have lots of liquid nitrogen. So, we're going to make ourselves some liquid nitrogen ice cream. So, Joanna

3

Reading Comprehension - Liquid Nitrogen  

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

Liquid Nitrogen Liquid Nitrogen Nitrogen is the most common substance in Earth's _________ crust oceans atmosphere trees . In the Earth's atmosphere, nitrogen is a gas. The particles of a gas move very quickly. They run around and bounce into everyone and everything. The hotter a gas is, the _________ slower faster hotter colder the particles move. When a gas is _________ cooled warmed heated compressed , its particles slow down. If a gas is cooled enough, it can change from a gas to a liquid. For nitrogen, this happens at a very _________ strange warm low high temperature. If you want to change nitrogen from a gas to a liquid, you have to bring its temperature down to 77 Kelvin. That's 321 degrees below zero _________ Kelvin Celsius Centigrade Fahrenheit ! Liquid nitrogen looks like water, but it acts very differently. It

4

Frostbite Theater - Liquid Nitrogen Experiments - Liquid Nitrogen in a  

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

Freeze Liquid Nitrogen! Freeze Liquid Nitrogen! Previous Video (Let's Freeze Liquid Nitrogen!) Frostbite Theater Main Index Next Video (Freeze the Rainbow!) Freeze the Rainbow! Liquid Nitrogen in a Microwave! What happens when the world's most beloved cryogenic liquid meets one of the most common household appliances? Find out when we try to microwave liquid nitrogen! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: A little while ago we received an email from Star of the Sea Catholic School in Virginia Beach, Virginia, asking what happens when you place liquid nitrogen in a microwave. Well, I just happen to have some liquid nitrogen! Steve: And I just happen to have a microwave!

5

Frostbite Theater - Liquid Nitrogen Experiments - Liquid Nitrogen and  

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

Freeze the Rainbow! Freeze the Rainbow! Previous Video (Freeze the Rainbow!) Frostbite Theater Main Index Next Video (Liquid Nitrogen and Fire!) Liquid Nitrogen and Fire! Liquid Nitrogen and Antifreeze! What happens when the freezing power of liquid nitrogen meets the antifreezing power of ethylene glycol? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: What happens when the freezing power of liquid nitrogen... Steve: ...meets the antifreezing power of ethylene glycol! Joanna: While a mix of 70 percent ethylene glycol and 30 percent water doesn't freeze until 60 degrees below zero, it's still no match for liquid nitrogen. At 321 degrees below zero, liquid nitrogen easily freezes

6

Frostbite Theater - Liquid Nitrogen Experiments - Liquid Nitrogen and Fire!  

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

Antifreeze! Antifreeze! Previous Video (Liquid Nitrogen and Antifreeze!) Frostbite Theater Main Index Next Video (Liquid Nitrogen and the Tea Kettle Mystery!) Liquid Nitrogen and the Tea Kettle Mystery! Liquid Nitrogen and Fire! A burning candle is placed in a container of liquid nitrogen! Filmed in front of a live studio audience. Well, they were live when we started... [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Steve: Now, then. I'm a little bit afraid to ask this next question because I think I already know the answer, but is anyone in here feeling a little... dangerous? You're willing to take a chance? Because I am willing to do an experiment they haven't let me do since 'The Incident.' Now, because of the danger, I cannot have a volunteer. I must do this on my

7

Frostbite Theater - Liquid Oxygen vs. Liquid Nitrogen - Liquid Oxygen and  

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

Cells vs. Liquid Nitrogen! Cells vs. Liquid Nitrogen! Previous Video (Cells vs. Liquid Nitrogen!) Frostbite Theater Main Index Next Video (Paramagnetism) Paramagnetism Liquid Oxygen and Fire! What happens when nitrogen and oxygen are exposed to fire? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: And this is a test tube of liquid nitrogen! Steve: And this is a test tube of liquid oxygen! Joanna: Let's see what happens when nitrogen and oxygen are exposed to fire. Steve: Fire?! Joanna: Yeah! Steve: Really?! Joanna: Why not! Steve: Okay! Joanna: As nitrogen boils, it changes into nitrogen gas. Because it's so cold, it's denser than the air in the room. The test tube fills up with

8

Frostbite Theater - Liquid Nitrogen Experiments - Instant Liquid Nitrogen  

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

Freezing Balloons! Freezing Balloons! Previous Video (Freezing Balloons!) Frostbite Theater Main Index Next Video (Shattering Flowers!) Shattering Flowers! Instant Liquid Nitrogen Balloon Party! Need a bunch of balloons blown-up quickly? Liquid nitrogen to the rescue! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: We've been making videos for a while now and we've learned that people like balloons and liquid nitrogen! Steve: So... Here you go! Balloon: Crackling... Balloon: Pop! Joanna: Ooh! Balloon: Pop! Balloon: Pop! Steve: If you'd like to know the science of what's going on behind this, please one of our first videos, "Liquid Nitrogen Experiments: The Balloon."

9

Frostbite Theater - Liquid Nitrogen Experiments - Liquid Nitrogen Show!  

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

Insulators! Insulators! Previous Video (Insulators!) Frostbite Theater Main Index Next Video (Superconductors!) Superconductors! Liquid Nitrogen Show! All of your favorite liquid nitrogen experiments all in one place! Flowers! Balloons! Racquetballs! Nothing is safe! Just sit back, relax, and enjoy the show! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: Usually, every couple years, Jefferson Lab hosts an Open House. This is the one time the public and come and tour our accelerator and end stations. Steve: During the 2010 Open House, our cameraman snuck into one of the ongoing cryo shows that are held throughout the day. He missed half of it. So if you want to see the entire thing, check our website to see when the

10

Frostbite Theater - Liquid Nitrogen Experiments - Let's Freeze Liquid  

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

Shattering Pennies! Shattering Pennies! Previous Video (Shattering Pennies!) Frostbite Theater Main Index Next Video (Liquid Nitrogen in a Microwave!) Liquid Nitrogen in a Microwave! Let's Freeze Liquid Nitrogen! By removing the hottest molecules, we're able to freeze liquid nitrogen! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: Today, we're going to freeze liquid nitrogen! Joanna and Steve: Yeah! Joanna: The obvious way to do this is to put the liquid nitrogen into something colder. Something that we have lots of around here! Something like... liquid helium! Steve: Yes! Joanna: Yeah, but we're not going to do that. Instead, we're going to freeze the nitrogen by removing the hottest molecules!

11

Frostbite Theater - Liquid Nitrogen Experiments - Insulators!  

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

Popping Film Canisters! Popping Film Canisters! Previous Video (Popping Film Canisters!) Frostbite Theater Main Index Next Video (Liquid Nitrogen Show!) Liquid Nitrogen Show! Insulators! Cups full of water are placed into bowls of liquid nitrogen! Which cup will insulate the best? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: And this is a container of liquid nitrogen! Steve: And these are two plastic cups! Joanna: Let's see which cup is the better insulator! Steve: Okay! So, um, how do we do that? Joanna: Well, we'll pour water into each of the cups and then we'll pour the liquid nitrogen into each of the bowls. If we then place the cup in the bowl, the heat from the water will try to pass through the cup into the

12

Frostbite Theater - Liquid Nitrogen Experiments - Freezing Balloons!  

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

Season Two Bloopers Season Two Bloopers Previous Video (Season Two Bloopers) Frostbite Theater Main Index Next Video (Instant Liquid Nitrogen Balloon Party!) Instant Liquid Nitrogen Balloon Party! Freezing Balloons! What happens when a balloon full of air is plunged into a container full of liquid nitrogen? Play the video to find out! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: And this is a container of liquid nitrogen! Steve: And this is a really big balloon! Joanna: Let's see what happens when we place the balloon in the liquid nitrogen! Steve: Okay! Wait! Wait! Wait! Wait! Wait! Isn't the balloon going to pop? Joanna: We'll see! Steve: Aw, man... Huh. Okay, so the balloon didn't pop. But, there's

13

Frostbite Theater - Liquid Nitrogen Experiments - Let's Pour Liquid  

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

Shattering Flowers! Shattering Flowers! Previous Video (Shattering Flowers!) Frostbite Theater Main Index Next Video (Giant Koosh Ball!) Giant Koosh Ball! Let's Pour Liquid Nitrogen on the Floor! Liquid nitrogen?! On the floor?! Who's going to clean that mess up?! See what really happens when one of the world's most beloved cryogenic liquids comes into contact with a room temperature floor. [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: From time to time, we spill a little liquid nitrogen! The reaction we sometimes get is.... Shannon: Did they just pour LIQUID NITROGEN on the FLOOR?!?! Joanna: Yes. Yes we did. Steve: One thing people seem to have a problem with is the mess that liquid

14

Microfluidic Facility, Harvard Medical School LIQUID NITROGEN TANK HANDLING  

E-Print Network (OSTI)

Microfluidic Facility, Harvard Medical School LIQUID NITROGEN TANK HANDLING HMS microfluidics/microfabrication facility has one high pressure liquid nitrogen tank which supplies the nitrogen for some equipment normal operation. In case the liquid nitrogen tank is malfunctioning and requires to be shut down or replaced make

Paulsson, Johan

15

Frostbite Theater - Liquid Nitrogen Experiments - Cells vs. Liquid  

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

Superconductors! Superconductors! Previous Video (Superconductors!) Frostbite Theater Main Index Next Video (Liquid Oxygen and Fire!) Liquid Oxygen and Fire! Cells vs. Liquid Nitrogen! Let's say you've carelessly dunked your hand into a vat of liquid nitrogen and let it freeze solid. Every movie you've seen where this happens tells you that your hand will shatter like fine china should you bump it into something. If you're extremely careful, will your hand be okay once it thaws out? We'll explore this issue, using flower and onion cells rather than our hands! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: By now, we all know what happens when you place a flower in liquid

16

Thermal bubble behaviour in liquid nitrogen under electric fields.  

E-Print Network (OSTI)

??This thesis describes thermally induced bubble behaviour changes in liquid nitrogen (LN2) under electric fields. Cryogenic liquids such as LN2 have been used not only (more)

Wang, Ping

2008-01-01T23:59:59.000Z

17

Frostbite Theater - Liquid Nitrogen Experiments - Freeze the Rainbow!  

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

Liquid Nitrogen in a Microwave! Liquid Nitrogen in a Microwave! Previous Video (Liquid Nitrogen in a Microwave!) Frostbite Theater Main Index Next Video (Liquid Nitrogen and Antifreeze!) Liquid Nitrogen and Antifreeze! Freeze the Rainbow! Starburst candy. They're fruity. They're chewy. They're delicious! But, can they survive taking a bath in liquid nitrogen? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: A student visiting Jefferson Lab from Huntington Middle School in Newport News, Virginia, asked what happens to a starburst if you put it in liquid nitrogen. Well, we're going to find out! Steve: At room temperature, starburst isn't really all that special. I can kind of squish it if I squeeze it hard enough and, if I drop it, nothing

18

Frostbite Theater - Liquid Nitrogen Experiments - Giant Koosh Ball!  

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

Let's Pour Liquid Nitrogen on the Floor! Let's Pour Liquid Nitrogen on the Floor! Previous Video (Let's Pour Liquid Nitrogen on the Floor!) Frostbite Theater Main Index Next Video (Egg + Liquid Nitrogen + Time-lapse!) Egg + Liquid Nitrogen + Time-lapse! Giant Koosh Ball! Sometimes, you just want to know what's going to happen! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! A while ago, I was at the mall and I saw this. And, the first thing that popped into my head was 'I wonder what would happen if we were to put this in liquid nitrogen?' Now, that's one thing I really love about science. If you have a question, you can, sometimes, do an experiment to find out what the answer is! Here at the Lab, we have a lot of liquid nitrogen, so that's

19

Questions and Answers - Is there anything colder than liquid nitrogen?  

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

How cold is liquid nitrogen? How cold is liquid nitrogen? Previous Question (How cold is liquid nitrogen?) Questions and Answers Main Index Next Question (If you jumped into a pool of liquid oxygen, would your body instantly crystallize?) If you jumped into a pool of liquid oxygen,would your body instantly crystallize? Is there anything colder than liquid nitrogen? Yes, there are things colder than liquid nitrogen, like most of the Universe! I assume, though, that you mean things on the Earth. There actually is an entire branch of science called cryogenics that deals with really cold things. Generally the science of cryogenics is when the temperature goes below that which we can reach with conventional refrigeration equipment, around 250 degrees (Fahrenheit) below zero. Many

20

Frostbite Theater - Liquid Nitrogen Experiments - Popping Film Canisters!  

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

Exploding Rubber Stopper! Exploding Rubber Stopper! Previous Video (Exploding Rubber Stopper!) Frostbite Theater Main Index Next Video (Insulators!) Insulators! Popping Film Canisters! What happens when liquid nitrogen is trapped inside a sealed container? Play the video to find out! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: And this is a container of liquid nitrogen! Steve: And these are a bunch of film canisters! Joanna: Let's see what happens when we trap the liquid nitrogen in the film canisters! Steve: Okay! Now the room, and everything in it, is way too hot for the liquid nitrogen to stay as a liquid. As soon as the liquid nitrogen touches anything in the room, it boils and changes into a gas.

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Frostbite Theater - Liquid Nitrogen Experiments - The Flying Ring!  

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

Liquid Nitrogen and the Tea Kettle Mystery! Liquid Nitrogen and the Tea Kettle Mystery! Previous Video (Liquid Nitrogen and the Tea Kettle Mystery!) Frostbite Theater Main Index Next Video (Pewter Bells) Pewter Bells The Flying Ring! A copper ring leaps off an electromagnet when it's turned on. What happens when the ring's resistance is lowered using liquid nitrogen? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: And this is an AC powered electromagnet. And this is a copper ring. When I place the copper ring on the electromagnet and turn it on, the magnet's changing magnetic field will induce an electric current in the copper ring. The current in the ring will then create it's own magnetic

22

Electric pulse resistance of liquid nitrogen and rubber  

Science Journals Connector (OSTI)

We report the results of experimental investigations of the breakdown amplitudes of pulsed voltages applied to centimeter-thick layers of liquid nitrogen and various kinds of rubber at 77 K. We report the char...

V. I. Kurets; . N. Tarakanovskii; G. P. Filatov

1995-05-01T23:59:59.000Z

23

Field test of liquid nitrogen cooled cryogenic power cable  

Science Journals Connector (OSTI)

A liquid nitrogen cooled cryogenic cable, 66 kV, 100 MVA, 30 m was constructed and tested with loads simulating actual operating loads from October 1970 to December 1971. The successful operation of the cable makes us hopeful it can be used for large capacity transmission. Our test line is composed of aluminium stranded hollow conductor, liquid-nitrogen impregnated polyethylene paper electrical insulation, and polyurethane foam thermal insulation.

H. Nagano; M. Fukasawa; S. Kuma; K. Sugiyama

1973-01-01T23:59:59.000Z

24

Vitrification and levitation of a liquid droplet on liquid nitrogen  

Science Journals Connector (OSTI)

...Institute of Technology Health Sciences and Technology, Cambridge...nuclear reactors, turbine machineries...behavior of nitrogen gas environing a...following pressure development can be analytically...Institute of Technology Health Sciences...

Young S. Song; Douglas Adler; Feng Xu; Emre Kayaalp; Aida Nureddin; Raymond M. Anchan; Richard L. Maas; Utkan Demirci

2010-01-01T23:59:59.000Z

25

Ultrasonic attenuation and volume viscosity in liquid argon, nitrogen and helium  

E-Print Network (OSTI)

. Ultrasonic attenuation in liquid nitrogen at 49. 45 Hc/sec ll. Dersity dependence of the volume viscosity in l. iquid nitrogen 12. Density dependence of Qv/&(S in liquid nitrogen 40 13. Ultrasonic attenuation in liquid helium at 4. 20 K 43 14. Ultrasonic... attenuation in liquid helium at 3. 69"K 44 15. Qv in liquid argon and nitrogen as a function of reduced density 51 LIST OF TABLES 1. Data and results for the calculation of volume viscosity in liquid argon 2. Data and results for the calculation of volume...

Singer, James Robert

2012-06-07T23:59:59.000Z

26

Principle of a Liquid Nitrogen Irradiation Device and Its Realization for Use in a Swimming-Pool Type Reactor  

Science Journals Connector (OSTI)

The interesting characteristics of liquid nitrogen irradiation loops need not be demonstrated; but their use up to now has been largely limited by the occurrence of explosions in the liquid nitrogen submitted ...

L. Bochirol; J. Doulat; L. Weil

1961-01-01T23:59:59.000Z

27

Quantum melting of charge ice and non-Fermi-liquid behavior: An exact solution for the extended Falicov-Kimball model in the ice-rule limit  

E-Print Network (OSTI)

An exact solution is obtained for a model of itinerant electrons coupled to ice-rule variables on the tetrahedron Husimi cactus, an analogue of the Bethe lattice of corner-sharing tetrahedra. It reveals a quantum critical point with the emergence of non-Fermi-liquid behavior in melting of the "charge ice" insulator. The electronic structure is compared with the numerical results for the pyrochlore-lattice model to elucidate the physics of electron systems interacting with the tetrahedron ice rule.

Masafumi Udagawa; Hiroaki Ishizuka; Yukitoshi Motome

2010-06-04T23:59:59.000Z

28

Quantum melting of charge ice and non-Fermi-liquid behavior: An exact solution for the extended Falicov-Kimball model in the ice-rule limit  

E-Print Network (OSTI)

An exact solution is obtained for a model of itinerant electrons coupled to ice-rule variables on the tetrahedron Husimi cactus, an analogue of the Bethe lattice of corner-sharing tetrahedra. It reveals a quantum critical point with the emergence of non-Fermi-liquid behavior in melting of the "charge ice" insulator. The electronic structure is compared with the numerical results for the pyrochlore-lattice model to elucidate the physics of electron systems interacting with the tetrahedron ice rule.

Udagawa, Masafumi; Motome, Yukitoshi

2010-01-01T23:59:59.000Z

29

Liquid absorbent solutions for separating nitrogen from natural gas  

DOE Patents (OSTI)

Nitrogen-absorbing and -desorbing compositions, novel ligands and transition metal complexes, and methods of using the same, which are useful for the selective separation of nitrogen from other gases, especially natural gas.

Friesen, Dwayne T. (Bend, OR); Babcock, Walter C. (Bend, OR); Edlund, David J. (Redmond, OR); Lyon, David K. (Bend, OR); Miller, Warren K. (Bend, OR)

2000-01-01T23:59:59.000Z

30

Kinetics and mechanisms of interactions of nitrogen and carbon monoxide with liquid niobium  

SciTech Connect

The kinetics and mechanisms of interactions of N{sub 2} and CO with liquid niobium were investigated in the temperature range of 2,700 to 3,000 K in samples levitated in N{sub 2}/Ar and CO/Ar streams. The nitrogen absorption and desorption processes were found to be second-order with respect to nitrogen concentration, indicating that the rate controlling step is either the adsorption of nitrogen molecules on the liquid surface or dissociation of absorbed nitrogen molecules into adsorbed atoms. The carbon and oxygen dissolution in liquid niobium from CO gas is an exothermic process and the solubilities of carbon and oxygen (C{sub Ce}, C{sub Oe} in at%) are related to the temperature and the partial pressure of CO. The reaction CO {yields} (C) + (O) along with the evaporation of niobium oxide takes place during C and O dissolution, whereas C and O desorption occurs via CO evolution only.

Park, H.G.

1990-01-01T23:59:59.000Z

31

Ice-water and liquid-vapor phase transitions by a GinzburgLandau model  

Science Journals Connector (OSTI)

A model for the first order phase transitions as ice-water and liquid-vapor is proposed using the GinzburgLandau equation for the order parameter ? . In this model the density ? is composed of two quantities ? 0 and ? 1 such that 1 / ? = 1 / ? 0 + 1 / ? 1 where ? 1 is strictly connected to the order parameter ? . By means of this decomposition we are able to represent the Andrew diagram without the use of the heuristic van der Waals equation.

Mauro Fabrizio

2008-01-01T23:59:59.000Z

32

Neutron scattering from polycrystalline ice (Ih): Some keys to understanding the collective behavior of liquid water  

Science Journals Connector (OSTI)

The phonon dispersion in the second Brillouin zone of polycrystalline ice (Ih) has been measured. The results confirm the predictions of a previous lattice-dynamics calculation [A. Criado, F.J. Bermejo, M. Garca-Hernndez, and J.L. Martnez, Phys. Rev. E 47, 3516 (1993)] where anomalously steep dispersion curves of an apparent acoustic origin were found. The relevance of the present findings for explaining some apparently anomalous features concerning the collective dynamics of liquid water is finally discussed.

F. J. Bermejo; E. Frikkee; M. Garca-Hernndez; J. L. Martnez; A. Criado

1993-09-01T23:59:59.000Z

33

Helium Refrigerator Liquid Nitrogen Pre-Cooler Component Parameter Sensitivity Analysis  

SciTech Connect

For helium refrigerators using liquid nitrogen (LN) pre-cooling it is not uncommon for the ambient helium refrigeration return stream(s) exiting the cold box to be significantly colder and for the cycle to use more nitrogen than estimated by the process studies. Often there is an emphasis on the length of 300 to 80-K helium-nitrogen heat exchangers to ensure the exiting nitrogen is as close to ambient as possible. However, it is really the size and flow distribution of the 300 to 80-K helium-helium heat exchangers which are the dominate influence of the nitrogen consumption. As such, an analysis was done to identify and quantify the sensitivity the key parameters in the refrigerator LN pre-cooler section affecting the LN consumption.

Peter Knudsen, Venkatarao Ganni

2010-04-01T23:59:59.000Z

34

Oxygen quenching in LAB based liquid scintillator and nitrogen bubbling model  

E-Print Network (OSTI)

The oxygen quenching effect in Linear Alkl Benzne (LAB) based liquid scintillator (LAB as the solvent, 3 g/L 2, 5 diphe-nyloxazole (PPO) as the fluor and 15 mg/L $p$-bis-($o$-methylstyryl)-benzene (bis-MSB) as the $\\lambda$-shifter) is studied by measuring the light yield as the function of the nitrogen bubbling time. It is shown that the light yield of the fully purged liquid scintillator is increased by 11% at the room temperature and the room atmosphere pressure. A simple nitrogen bubbling model is proposed to describe the relationship between the relative light yield (oxygen quenching factor) and the bubbling time.

Xiao Hua-Lin

2009-04-08T23:59:59.000Z

35

Ice  

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

Ice Ice Nature Bulletin No. 661-A january 7, 1978 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation ICE There was a time when ice, cut on frozen ponds and lakes, was transported by fast clipper ships from New England to New Orleans where it was worth its weight in gold. Nowadays this cold brittle colorless substance is commonplace everywhere. Few people, however, know that ice is one of the strangest of all solids; and that, because of its unique properties, life on earth is what it is. Those properties are due to the distinctive structure of a molecule of water, formed of three elemental particles or atoms -- two of hydrogen and one of oxygen -- expressed by the familiar symbol, H2O. The three atoms are held together by two chemical bonds expressed by another symbol, H-O-H. Briefly, the unique properties of water, water vapor, and ice arise from that bonding and the arrangement of electron pairs around the oxygen atom.

36

Cryogenic cooling system of HTS transformers by natural convection of subcooled liquid nitrogen  

E-Print Network (OSTI)

Cryogenic cooling system of HTS transformers by natural convection of subcooled liquid nitrogen Ho-793, South Korea Abstract Heat transfer analysis on a newly proposed cryogenic cooling system is performed, and over-load operation. One of the key techniques to realize these advantages in practice is the cryogenic

Chang, Ho-Myung

37

Reactor cooldown time cut 30-50% with liquid nitrogen injection  

SciTech Connect

Cooling the hydrotreater in preparation for a catalyst bed turnaround was costly and time consuming for Champlin Petroleum Company's Corpus Christi, TX, refinery. The hydrotreater (reactor) functions to upgrade sour gas oil feedstock in a high pressure (1200 psig) catalytic reaction with hydrogen. When the catalyst becomes spent, the 4 1/2'' thick steel reactor and internals have to be cooled down from 700-750/sup 0/F operating temperature to a temperature that is safe for personnel to enter the vessel. During the time the hydotreater is out of service, the refinery must switch to a more expensive sweet crude feedstock. Cooldown was taking 24-36 hours just to reach 120-140/sup 0/F, about the maximum temperature acceptable for personnel entry. Champlin Petroleum Company evaluated the economics and decided to use liquid nitrogen to accelerate the cooldown of the hydrotreater. A company which offered the liquid nitrogen cooling service provided technical backup to accurately estimate the mass of material that had to be cooled and the costs associated with options when the nitrogen could be introduced during the cooldown cycle. Champlin decided to buy the liquid nitrogen injection as a package service. With the cooldown accelerated by using liquid nitrogen, it takes only 18 hours to cool the reactor to 90/sup 0/F compared to the 24-36 hours it used to take to reach 120-140/sup 0/F. Not only is significant cooldown time savings realized, but the catalyst is discharged at the cooler 90/sup 0/F, making handling easier and safer.

Cornelius, R.; Hodel, A.E.

1985-08-01T23:59:59.000Z

38

Frostbite Theater - Just for Fun - When Liquid Nitrogen Attacks! - Season 2  

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

Season One Bloopers Season One Bloopers Previous Video (Season One Bloopers) Frostbite Theater Main Index Next Video (Freezing Balloons!) Freezing Balloons! When Liquid Nitrogen Attacks! - Season 2 Bloopers Making videos is just another opportunity to catch mistakes on film! Enjoy these outtakes from Season 2! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: We made more videos! Steve: And we made more mistakes! Joanna: Enjoy! ----------------------------------------- Joanna: What happens when the freezing power of liquid nitrogen... Steve: Oh, jeez! Joanna: Oh, oh, oh! That was a little too much! Steve: You okay? Joanna: Uh, huh. I'm fine. Steve: This is why you wear the safety gear. This is why you have the

39

Methods for applying microchannels to separate methane using liquid absorbents, especially ionic liquid absorbents from a mixture comprising methane and nitrogen  

DOE Patents (OSTI)

Methods of using microchannel separation systems including absorbents to improve thermal efficiency and reduce parasitic power loss. Energy is typically added to desorb methane and then energy or heat is removed to absorb methane using a working solution. The working solution or absorbent may comprise an ionic liquid, or other fluids that demonstrate a difference in affinity between methane and nitrogen in a solution.

Tonkovich, Anna Lee Y. (Dublin, OH); Litt, Robert D. (Westerville, OH); Dongming, Qiu (Dublin, OH); Silva, Laura J. (Plain City, OH); Lamont, Micheal Jay (Plain City, OH); Fanelli, Maddalena (Plain City, OH); Simmons, Wayne W. (Plain city, OH); Perry, Steven (Galloway, OH)

2011-10-04T23:59:59.000Z

40

1000ton testing machine for cyclic fatigue tests of materials at liquid nitrogen temperatures  

SciTech Connect

One of the main tasks of superconductive magnets R and D is to determine the mechanical and fatigue properties of structural materials and the critical design elements in the cryogenic temperature range. This paper describes a new facility built based on the industrial 1000-ton (10 MN) testing machine Schenk PC10.0S. Special equipment was developed to provide the mechanical and cyclic tensile fatigue tests of large-scale samples at the liquid nitrogen temperature and in a given load range. The main feature of the developed testing machine is the cryostat, in which the device converting a standard compression force of the testing machine to the tensile force affected at the test object is placed. The control system provides the remote control of the test and obtaining, processing and presentation of test data. As an example of the testing machine operation the test program and test results of the cyclic tensile fatigue tests of fullscale helium inlet sample of the PF1 coil ITER are presented.

Khitruk, A. A.; Klimchenko, Yu. A.; Kovalchuk, O. A.; Marushin, E. L.; Mednikov, A. A.; Nasluzov, S. N.; Privalova, E. K.; Rodin, I. Yu.; Stepanov, D. B.; Sukhanova, M. V. [The D.V. Efremov Scientific Research Institute of Electrophysical Apparatus (NIIEFA), 3 Doroga na Metallostroy, Metallostroy, Saint Petersburg 196641 (Russian Federation)

2014-01-29T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Carbon-nitrogen bond-forming reactions in supercritical and expanded-liquid carbon dioxide media : green synthetic chemistry with multiscale reaction and phase behavior modeling  

E-Print Network (OSTI)

The goal of this work was to develop a detailed understanding of carbon-nitrogen (C-N) bond-forming reactions of amines carried out in supercritical and expanded-liquid carbon dioxide (CO2) media. Key motivations behind ...

Ciccolini, Rocco P

2008-01-01T23:59:59.000Z

42

Cloud fraction, liquid and ice water contents derived from long-term radar, lidar, and microwave radiometer data are systematically compared to models to quantify and  

E-Print Network (OSTI)

Cloud fraction, liquid and ice water contents derived from long-term radar, lidar, and microwave a systematic evaluation of clouds in forecast models. Clouds and their associated microphysical processes for end users of weather forecasts, who may be interested not only in cloud cover, but in other variables

Hogan, Robin

43

Formation of high density amorphous ice by decompression of ice VII and ice VIII at 135 K  

E-Print Network (OSTI)

of ice Ih and are found to have very similar structures. By cooling liquid water along the water trans- forms into ice VIII when cooled . With this in mind Klug et al. were able to produce low densityFormation of high density amorphous ice by decompression of ice VII and ice VIII at 135 K Carl Mc

McBride, Carl

44

Effect of Bubbles on Liquid Nitrogen Breakdown in Plane-Plane Electrode Geometry From 100-250 kPa  

SciTech Connect

Liquid nitrogen (LN(2)) is used as the cryogen and dielectric for many high temperature superconducting, high voltage applications. When a quench in the superconductor occurs, bubbles are generated which can affect the dielectric breakdown properties of the LN(2). Experiments were performed using plane-plane electrode geometry where bubbles were introduced into the gap through a pinhole in the ground electrode. Bubbles were generated using one or more kapton heaters producing heater powers up to 30 W. Pressure was varied from 100-250 kPa. Breakdown strength was found to be relatively constant up to a given heater power and pressure at which the breakdown strength drops to a low value depending on the pressure. After the drop the breakdown strength continues to drop gradually at higher heater power. This is particularly illustrated at 100 kPa. After the drop in breakdown strength the breakdown is believed to be due to the formation of a vapor bridge. Also the heater power at which the breakdown strength changes from that of LN(2) to that of gaseous nitrogen increases with increasing pressure. The data can provide design constraints for high temperature superconducting fault current limiters (FCLs) so that the formation of a vapor bridge can be suppressed or avoided.

Sauers, Isidor [ORNL; James, David Randy [ORNL; Tuncer, Enis [ORNL; Polyzos, Georgios [ORNL; Pace, Marshall O [ORNL

2011-01-01T23:59:59.000Z

45

The influence of irrigation water salinity on optimal nitrogen, phosphorus, and potassium liquid fertilizer rates  

E-Print Network (OSTI)

of nitrogen fertilizer to compensate for leaching losses (Miyamoto, 1984). The effect of salt stress on mineral status of plants has been studied extensively for many agronomic and horticultural crops (Al-Saidi and Alawi, 1984; Al-Saidi et al. , 1985... cultivars (Al-Saidi and Alawi, 1984; Al- Saidi et al. , 1985). Ten flowering annuals were grown in saline water with electrical conductivities of 0. 8, 1. 5, 3. 0, or 4. 5 dS m from a 2:1 equivalent weight basis of CaCI2 and NaCI in tap water (Devitt...

Campos Nu?n?ez, Ricardo

2012-06-07T23:59:59.000Z

46

Operation of a GERDA Phase I prototype detector in liquid argon and nitrogen  

E-Print Network (OSTI)

The GERDA (GERmanium Detector Array) experiment aiming to search for the neutrinoless double beta decay of 76Ge at the Laboratori Nazionali Del Gran Sasso (LNGS), Italy, will operate bare enriched high-purity germanium (HPGe) detectors in liquid argon. GERDA Phase I will use the enriched diodes from the previous Heidelberg-Moscow (HdM) and IGEX experiments. With the HPGe detectors mounted in a low-mass holder, GERDA aims at an excellent energy resolution and extremely low background. The goal is to check the claim for the neutrinoless double beta decay evidence in the HdM 76Ge experiment within one year of data taking. Before dismounting the enriched diodes from their cryostat, the performance parameters of the HdM and the IGEX detectors have been measured. The diodes have been removed from their cryostats, their dimensions measured and they have been put under va-cuum in a transportation container. They are now being refurbished for GERDA Phase I at Canberra Semiconductor NV. Before operating the enriched diodes, a non-enriched HPGe p-type detector mounted in a low-mass holder is operated in the liquid argon test facility of the GERDA Detector Laboratory (GDL) at LNGS. Since January 2006, the testing of the prototype detector is being carried out in the GDL as well as at the site of the detector manufacturer.

M. Barnab Heider; A. Bakalyarov; L. Bezrukov; C. Cattadori; O. Chkvorets; K. Gusev; M. Hult; I. Kirpichnikov; V. Lebedev; G. Marissens; P. Peiffer; S. Schnert; M. Shirchenko; A. Smolnikov; A. Vasenko; S. Vasiliev; S. Zhukov

2008-12-20T23:59:59.000Z

47

Thermodynamic Models for Vapor-Liquid Equilibria of Nitrogen+Oxygen+Carbon Dioxide at Low Temperatures  

E-Print Network (OSTI)

For the design and optimization of CO2 recovery from alcoholic fermentation processes by distillation, models for vapor-liquid equilibria (VLE) are needed. Two such thermodynamic models, the Peng-Robinson equation of state (EOS) and a model based on Henry's law constants, are proposed for the ternary mixture N2+O2+CO2. Pure substance parameters of the Peng-Robinson EOS are taken from the literature, whereas the binary parameters of the Van der Waals one-fluid mixing rule are adjusted to experimental binary VLE data. The Peng-Robinson EOS describes both binary and ternary experimental data well, except at high pressures approaching the critical region. A molecular model is validated by simulation using binary and ternary experimental VLE data. On the basis of this model, the Henry's law constants of N2 and O2 in CO2 are predicted by molecular simulation. An easy-to-use thermodynamic model, based on those Henry's law constants, is developed to reliably describe the VLE in the CO2-rich region.

Vrabec, J; Buchhauser, U; Meyer-Pittroff, R; Hasse, H

2009-01-01T23:59:59.000Z

48

Analysis of liquified coal for nitrogenous bases; separation by high performance liquid chromatography and identification by probe microdistillation/mass spectrometry  

E-Print Network (OSTI)

ANALYSIS OF LIQUIFIED COAL FOR NITROGENOUS BASES; SEPARATION BY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY AND IDENTIFICATION BY PROBE MICRODISTILLATION/MASS SPECTROMETRY A Thesis by LEONARD ROYCE SCHRONK Submitted to the Graduate College... AND IDENTIFICATION BY PROBE MICRODISTILLATION/MASS SPECTROMETRY A Thesis by LEONARD ROYCE SCHRONK Approved as to style and content by: Co-Charrman o Commlxtte ) (Co-Chazrman o Committee Me er Hea of Department December 1978 ABSTRACT Analysis of Liquified...

Schronk, Leonard Royce

1978-01-01T23:59:59.000Z

49

Solubility of carbon dioxide, nitrous oxide, ethane, and nitrogen in 1-butyl-1-methylpyrrolidinium and trihexyl(tetradecyl)phosphonium tris(pentafluoroethyl)trifluorophosphate (eFAP) ionic liquids  

Science Journals Connector (OSTI)

The density and viscosity of the ionic liquids 1-butyl-1-methylpyrrolidinium tris(pentafluoroethyl)trifluorophosphate [C1C4Pyrro][eFAP] and trihexyl(tetradecyl)phosphonium tris(pentafluoroethyl)trifluorophosphate [P66614][eFAP] were measured as a function of temperature and pressure and as a function of temperature, respectively. These two ionic liquids are more viscous than those based in the same anion associated to imidazolium cations. The effect of the addition of water on the density and viscosity of [P66614][eFAP] was studied at pressures close to atmospheric and as a function of the temperature. This ionic liquid is only partially miscible with water, its solubility being of around X H 2 O = 0.2 in the range of (303 to 315)K. Experimental values of the solubility of carbon dioxide, nitrous oxide, ethane, and nitrogen were obtained as a function of temperature and at pressures close to atmospheric. Carbon dioxide and nitrous oxide are the more soluble gases with mole fraction solubilities up to 710?2. Ethane is four times and 1.3 times less soluble than carbon dioxide in [C1C4Pyrro][eFAP] and [P66614][eFAP], respectively. Nitrogen is one order of magnitude less soluble than the others gases in the two ionic liquids studied. In order to understand behavior of the different gases with these ionic liquids, the thermodynamic functions of solvation such as enthalpy and entropy were calculated from the variation of the Henrys law constant with temperature. It is shown that the more favorable interactions of the gases with the ionic liquid explain the larger solubility of carbon dioxide and nitrous oxide in [C1C4Pyrro][eFAP]. In the case of [P66614][eFAP], it is the less favorable entropic contribution that explains the lower solubility of ethane in this ionic liquid.

S. Stevanovic; M.F. Costa Gomes

2013-01-01T23:59:59.000Z

50

Titan's past and future: 3D modeling of a pure nitrogen atmosphere and geological implications  

E-Print Network (OSTI)

Several clues indicate that Titan's atmosphere has been depleted in methane during some period of its history, possibly as recently as 0.5-1 billion years ago. It could also happen in the future. Under these conditions, the atmosphere becomes only composed of nitrogen with a range of temperature and pressure allowing liquid or solid nitrogen to condense. Here, we explore these exotic climates throughout Titan's history with a 3D Global Climate Model (GCM) including the nitrogen cycle and the radiative effect of nitrogen clouds. We show that for the last billion years, only small polar nitrogen lakes should have formed. Yet, before 1 Ga, a significant part of the atmosphere could have condensed, forming deep nitrogen polar seas, which could have flowed and flooded the equatorial regions. Alternatively, nitrogen could be frozen on the surface like on Triton, but this would require an initial surface albedo higher than 0.65 at 4 Ga. Such a state could be stable even today if nitrogen ice albedo is higher than th...

Charnay, Benjamin; Tobie, Gabriel; Sotin, Christophe; Wordsworth, Robin

2014-01-01T23:59:59.000Z

51

The convective desalination of sea ice  

E-Print Network (OSTI)

containing both liquid brine and solid (pure water) ice. Frad is the flux of penetrating solar radiation. Thus the thermal properties of sea ice are composed of those of the solid and liquid phases that make up sea ice. Fixed-salinity models used in older... components of the physical climate system. Evolving in space and time, sea ice has thermal and mechanical properties that must be updated dynamically for a faithful representation within climate models. Such models are vital tools to help people everywhere...

Rees Jones, David

2014-07-01T23:59:59.000Z

52

Comparison of different liquid anaerobic digestion effluents as inocula and nitrogen sources for solid-state batch anaerobic digestion of corn stover  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer Compared methane production of solid AD inoculated with different effluents. Black-Right-Pointing-Pointer Food waste effluent (FWE) had the largest population of acetoclastic methanogens. Black-Right-Pointing-Pointer Solid AD inoculated with FWE produced the highest methane yield at F/E ratio of 4. Black-Right-Pointing-Pointer Dairy waste effluent (DWE) was rich of cellulolytic and xylanolytic bacteria. Black-Right-Pointing-Pointer Solid AD inoculated with DWE produced the highest methane yield at F/E ratio of 2. - Abstract: Effluents from three liquid anaerobic digesters, fed with municipal sewage sludge, food waste, or dairy waste, were evaluated as inocula and nitrogen sources for solid-state batch anaerobic digestion of corn stover in mesophilic reactors. Three feedstock-to-effluent (F/E) ratios (i.e., 2, 4, and 6) were tested for each effluent. At an F/E ratio of 2, the reactor inoculated by dairy waste effluent achieved the highest methane yield of 238.5 L/kgVS{sub feed}, while at an F/E ratio of 4, the reactor inoculated by food waste effluent achieved the highest methane yield of 199.6 L/kgVS{sub feed}. The microbial population and chemical composition of the three effluents were substantially different. Food waste effluent had the largest population of acetoclastic methanogens, while dairy waste effluent had the largest populations of cellulolytic and xylanolytic bacteria. Dairy waste also had the highest C/N ratio of 8.5 and the highest alkalinity of 19.3 g CaCO{sub 3}/kg. The performance of solid-state batch anaerobic digestion reactors was closely related to the microbial status in the liquid anaerobic digestion effluents.

Xu Fuqing; Shi Jian [Department of Food, Agricultural and Biological Engineering, Ohio State University, Ohio Agricultural Research and Development Center, 1680 Madison Ave., Wooster, OH 44691 (United States); Lv Wen; Yu Zhongtang [Department of Animal Sciences, Ohio State University, Columbus, OH 43210 (United States); Li Yebo, E-mail: li.851@osu.edu [Department of Food, Agricultural and Biological Engineering, Ohio State University, Ohio Agricultural Research and Development Center, 1680 Madison Ave., Wooster, OH 44691 (United States)

2013-01-15T23:59:59.000Z

53

The influence of ice nucleation mode and ice vapor growth on simulation of  

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

The influence of ice nucleation mode and ice vapor growth on simulation of The influence of ice nucleation mode and ice vapor growth on simulation of arctic mixed-phase clouds Avramov, Alexander The Pennsylvania State University Category: Modeling Mixed-phase arctic stratus clouds are the predominant cloud type in the Arctic . Perhaps one of the most intriguing of their features is that they tend to have liquid tops that precipitate ice. Despite the fact that this situation is colloidally unstable, these cloud systems are quite long lived - from a few days to over a couple of weeks. Previous studies have suggested that this longevity may be due to a paucity of ice nucleating aerosols (ice nuclei, or IN) in the Arctic. Such studies have shown that small changes in IN concentrations can cause large changes in the amount of liquid water within a mixed-phase stratus deck. We use the Regional

54

Ice Fishing  

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

Ice Fishing Ice Fishing Nature Bulletin No. 327-A January 11, 1969 Forest Preserve District of Cook County Richard B. Ogilvie, President Roland F. Eisenbeis, Supt. of Conservation ICE FISHING We have a peculiar class of people known as the "Frosty-toed Tribe". As soon as winter comes and the ice permits, they put on all the clothes they own and what they can borrow, pack their automobiles with equipment, and start early in the morning for some inland body of water or a bay along one of the Great Lakes. Usually, two or three go together and they may drive 50 or 100 miles. For hours, even in below zero weather, they huddle around holes cut in the ice, fishing patiently, sustained by hope, hot coffee, and a lot of conversation. Some days a man may catch nothing. Other days he may bring home all the law allows. Sometimes he fishes vainly until almost sundown and then begins to haul them in, all of the same kind and size, as fast as he can re-bait his hook. In the meantime, other anglers have rushed over, cut holes, and are fishing all around him -- usually in vain, because one of the strange things about ice fishing is that, although you may catch fish out of one hole, you may get nothing out of another only a few feet from it, using the same kind of bait at the same depth. There are a lot of hotly contested theories but nobody knows why. After watching and questioning scores of ice fishermen, some of them noted for their prowess, we find that although each has his own secret techniques and favorite spots, good catches seem more a matter of luck than skill. Although they are sluggish and don't fight, fish caught in winter have the firmest flesh and finest flavor. The biggest thrill comes from the skillet.

55

Nitrogen sorption  

DOE Patents (OSTI)

Nitrogen-sorbing and -desorbing compositions and methods of using the same are disclosed, which are useful for the selective separation of nitrogen from other gases, especially natural gas.

Friesen, Dwayne T. (Bend, OR); Babcock, Walter C. (Bend, OR); Edlund, David J. (Bend, OR); Miller, Warren K. (Bend, OR)

1996-01-01T23:59:59.000Z

56

Nitrogen sorption  

DOE Patents (OSTI)

Nitrogen-sorbing and -desorbing compositions and methods of using the same are disclosed, which are useful for the selective separation of nitrogen from other gases, especially natural gas.

Friesen, Dwayne T. (Bend, OR); Babcock, Walter C. (Bend, OR); Edlund, David J. (Bend, OR); Miller, Warren K. (Bend, OR)

1993-01-01T23:59:59.000Z

57

Nitrogen sorption  

DOE Patents (OSTI)

Nitrogen-sorbing and -desorbing compositions and methods of using the same are disclosed, which are useful for the selective separation of nitrogen from other gases, especially natural gas.

Friesen, D.T.; Babcock, W.C.; Edlund, D.J.; Miller, W.K.

1993-07-06T23:59:59.000Z

58

Nitrogen sorption  

DOE Patents (OSTI)

Nitrogen-sorbing and -desorbing compositions and methods of using the same are disclosed, which are useful for the selective separation of nitrogen from other gases, especially natural gas. 5 figs.

Friesen, D.T.; Babcock, W.C.; Edlund, D.J.; Miller, W.K.

1996-05-14T23:59:59.000Z

59

Method for Detection of Microorganisms That Produce Gaseous Nitrogen Oxides  

Science Journals Connector (OSTI)

...with 02-free nitrogen; the tubes were...dishes to reduce water evaporation...Detection of gas producers. Culture...conductivity detector; nitrogen was used as the...Low-pressure solubility of gases in liquid water. Chem. Rev...

Gary E. Jenneman; Anne D. Montgomery; Michael J. McInerney

1986-04-01T23:59:59.000Z

60

Using Doppler spectra to separate hydrometeor populations and analyze ice precipitation in multilayered mixed-phase clouds  

SciTech Connect

Multimodality of cloud radar Doppler spectra is used to partition cloud particle phases and to separate distinct ice populations in the radar sample volume, thereby facilitating analysis of individual ice showers in multilayered mixed-phase clouds. A 35-GHz cloud radar located at Barrow, Alaska, during the Mixed-Phase Arctic Cloud Experiment collected the Doppler spectra. Data from a pair of collocated depolarization lidars confirmed the presence of two liquid cloud layers reported in this study. Surprisingly, both of these cloud layers were embedded in ice precipitation yet maintained their liquid. Our spectral separation of the ice precipitation yielded two distinct ice populations: ice initiated within the two liquid cloud layers and ice precipitation formed in higher cloud layers. Comparisons of ice fall velocity versus radar reflectivity relationships derived for distinct showers reveal that a single relationship might not properly represent the ice showers during this period.

Rambukkange, Mahlon P.; Verlinde, J.; Eloranta, E. W.; Flynn, Connor J.; Clothiaux, Eugene E.

2011-01-31T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" 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.


61

Mars gets new icing  

Science Journals Connector (OSTI)

... north pole. Here the ice-cap shrinks each summer as a veneer of carbon dioxide burns off, revealing plenty of less volatile water ice beneath. The ice-cap at the ... beneath. The ice-cap at the red planet's south pole is covered with strange pits, called Swiss-cheese features. They have flat bottoms and steep sides; some are ...

Philip Ball

2003-02-14T23:59:59.000Z

62

Antarctic Ice Sheet: Preliminary Results of First Core Hole to Bedrock  

Science Journals Connector (OSTI)

...unconsolidated sediment, such as glacial till, rather than solid rock. Glacial till underlies the Greenland ice sheet at Camp Century (4). Liquid water was encountered at the ice-rock interface, clear evidence that the bottom of the ice sheet is...

Anthony J. Gow; Herbert T. Ueda; Donald E. Garfield

1968-09-06T23:59:59.000Z

63

Arctic ice islands  

SciTech Connect

The development of offshore oil and gas resources in the Arctic waters of Alaska requires offshore structures which successfully resist the lateral forces due to moving, drifting ice. Ice islands are floating, a tabular icebergs, up to 60 meters thick, of solid ice throughout their thickness. The ice islands are thus regarded as the strongest ice features in the Arctic; fixed offshore structures which can directly withstand the impact of ice islands are possible but in some locations may be so expensive as to make oilfield development uneconomic. The resolution of the ice island problem requires two research steps: (1) calculation of the probability of interaction between an ice island and an offshore structure in a given region; and (2) if the probability if sufficiently large, then the study of possible interactions between ice island and structure, to discover mitigative measures to deal with the moving ice island. The ice island research conducted during the 1983-1988 interval, which is summarized in this report, was concerned with the first step. Monte Carlo simulations of ice island generation and movement suggest that ice island lifetimes range from 0 to 70 years, and that 85% of the lifetimes are less then 35 years. The simulation shows a mean value of 18 ice islands present at any time in the Arctic Ocean, with a 90% probability of less than 30 ice islands. At this time, approximately 34 ice islands are known, from observations, to exist in the Arctic Ocean, not including the 10-meter thick class of ice islands. Return interval plots from the simulation show that coastal zones of the Beaufort and Chukchi Seas, already leased for oil development, have ice island recurrences of 10 to 100 years. This implies that the ice island hazard must be considered thoroughly, and appropriate safety measures adopted, when offshore oil production plans are formulated for the Alaskan Arctic offshore. 132 refs., 161 figs., 17 tabs.

Sackinger, W.M.; Jeffries, M.O.; Lu, M.C.; Li, F.C.

1988-01-01T23:59:59.000Z

64

ODD NITROGEN PROCESSES  

E-Print Network (OSTI)

including observed nitrogen dioxide, Pure Appl. Geophys,Stratosphere Observation of Nitrogen Dioxide Rates of Ozoneby photolysis of nitrogen dioxide and regeneration of ozone:

Johnston, Harold S.

2013-01-01T23:59:59.000Z

65

THE NITROGEN OXIDES CONTROVERSY  

E-Print Network (OSTI)

including observed nitrogen dioxide," Pure App. Geophys.HN0 ) and probably nitrogen dioxide (N0 ) at a few parts perorganic molecule and nitrogen dioxide. Several examples

Johnston, Harold S.

2012-01-01T23:59:59.000Z

66

The Ability of MM5 to Simulate Ice Clouds: Systematic Comparison between Simulated and Measured Fluxes and Lidar/Radar Profiles at the  

E-Print Network (OSTI)

to produce too much solid water (ice and snow) and not enough liquid water. 1. Introduction Ice clouds playThe Ability of MM5 to Simulate Ice Clouds: Systematic Comparison between Simulated and Measured­NCAR Mesoscale Model (MM5) to simulate midlatitude ice clouds is evaluated. Model outputs are compared to long

Protat, Alain

67

Ice Concentration Retrieval in Stratiform Mixed-phase Clouds Using Cloud Radar Reflectivity Measurements and 1D Ice Growth Model Simulations  

SciTech Connect

Measurement of ice number concentration in clouds is important but still challenging. Stratiform mixed-phase clouds (SMCs) provide a simple scenario for retrieving ice number concentration from remote sensing measurements. The simple ice generation and growth pattern in SMCs offers opportunities to use cloud radar reflectivity (Ze) measurements and other cloud properties to infer ice number concentration quantitatively. To understand the strong temperature dependency of ice habit and growth rate quantitatively, we develop a 1-D ice growth model to calculate the ice diffusional growth along its falling trajectory in SMCs. The radar reflectivity and fall velocity profiles of ice crystals calculated from the 1-D ice growth model are evaluated with the Atmospheric Radiation Measurements (ARM) Climate Research Facility (ACRF) ground-based high vertical resolution radar measurements. Combining Ze measurements and 1-D ice growth model simulations, we develop a method to retrieve the ice number concentrations in SMCs at given cloud top temperature (CTT) and liquid water path (LWP). The retrieved ice concentrations in SMCs are evaluated with in situ measurements and with a three-dimensional cloud-resolving model simulation with a bin microphysical scheme. These comparisons show that the retrieved ice number concentrations are within an uncertainty of a factor of 2, statistically.

Zhang, Damao; Wang, Zhien; Heymsfield, Andrew J.; Fan, Jiwen; Luo, Tao

2014-10-01T23:59:59.000Z

68

Mobile Ice Nucleus Spectrometer  

SciTech Connect

This first year report presents results from a computational fluid dynamics (CFD) study to assess the flow and temperature profiles within the mobile ice nucleus spectrometer.

Kulkarni, Gourihar R.; Kok, G. L.

2012-05-07T23:59:59.000Z

69

Ice age paleotopography  

SciTech Connect

A gravitationally self-consistent theory of postglacial relative sea level change is used to infer the variation of surface ice and water cover since the Last Glacial Maximum (LGM). The results show that LGM ice volume was approximately 35 percent lower than suggested by the CLIMAP reconstruction and the maximum heights of the main Laurentian and Fennoscandian ice complexes are inferred to have been commensurately lower with respect to sea level. Use of these Ice Age boundary conditions in atmospheric general circulation models will yield climates that differ significantly from those previously inferred on the basis of the CLIMAP data set.

Peltier, W.R. (Univ. of Toronto, Ontario (Canada))

1994-07-08T23:59:59.000Z

70

Dynamical mechanism of antifreeze proteins to prevent ice growth  

E-Print Network (OSTI)

The fascinating ability of algae, insects and fishes to survive at temperatures below normal freezing is realized by antifreeze proteins (AFPs). These are surface-active molecules and interact with the diffusive water/ice interface thus preventing complete solidification. We propose a new dynamical mechanism on how these proteins inhibit the freezing of water. We apply a Ginzburg-Landau type approach to describe the phase separation in the two-component system (ice, AFP). The free energy density involves two fields: one for the ice phase with a low AFP concentration, and one for liquid water with a high AFP concentration. The time evolution of the ice reveals microstructures resulting from phase separation in the presence of AFPs. We observed a faster clustering of pre-ice structure connected to a locking of grain size by the action of AFP, which is an essentially dynamical process. The adsorption of additional water molecules is inhibited and the further growth of ice grains stopped. The interfacial energy between ice and water is lowered allowing the AFPs to form smaller critical ice nuclei. Similar to a hysteresis in magnetic materials we observe a thermodynamic hysteresis leading to a nonlinear density dependence of the freezing point depression in agreement with the experiments.

B. Kutschan; K. Morawetz; S. Thoms

2014-06-19T23:59:59.000Z

71

Process to upgrade coal liquids by extraction prior to hydrodenitrogenation  

DOE Patents (OSTI)

Oxygen compounds are removed, e.g., by extraction, from a coal liquid prior to its hydrogenation. As a result, compared to hydrogenation of such a non-treated coal liquid, the rate of nitrogen removal is increased.

Schneider, Abraham (Overbrook Hills, PA); Hollstein, Elmer J. (Wilmington, DE); Janoski, Edward J. (Havertown, PA); Scheibel, Edward G. (Media, PA)

1982-01-01T23:59:59.000Z

72

Methane Consumption in Temperate and Subarctic Forest Soils: Rates, Vertical Zonation, and Responses to Water and Nitrogen  

Science Journals Connector (OSTI)

...diffusive gas transport...sphere and the water content of...29). Soil nitrogen content and...Influence of nitrogen fertilization...in mineral waters with resorcinol...Low-pressure solubility of gases in liquid water. Chem. Rev...

A. P. S. Adamsen; G. M. King

1993-02-01T23:59:59.000Z

73

Fish Smother Under Ice  

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

Smother Under Ice Smother Under Ice A BULLETIN FOR THE CHICAGO PUBLIC SCHOOLS DESIGNED FOR INCLUSION IN THE WEEKLY ANNOUNCEMENT SENT OUT FROM THE OFFICE OF SUPT. WILLIAM H. JOHNSON Clayton F. Smith, President Roberts Mann, Superintendent of Conservation February 1, 1945 Nature Bulletin No. 1 FOREST PRESERVE NOTES Grown-ups, who used to kive on a farm or in a small town, are fond of talking about the old-fashioned winters "when I was a boy" and the winters that grandpa used to tell about. Well, one would have to go back a long, long time to find a winter as severe as this one. FISH SMOTHER UNDER ICE Lakes and streams breathe the same as living things. When they are covered with ice and snow they cannot get air and they much hold their breath until the ice thaws. While they are holding their breath the oxygen in the water is gradually used up by the living things sealed up in it -- fish, plants "bugs", snails, and hosts of microscopic life. If the ice lasts long enough, these living things die one after another as each kind reaches the point where it cannot stand any further oxygen starvation. Sometimes temporary relief is given by rains and melting snow that bring fresh, serated water under the ice, but no method of artificial respiration has been found that works. Sometimes, too, when water plants get enough sunlight through clear ice they produce small amounts of oxygen and delay the suffocation of the fish, etc.; but when snow and cloudy ice cuts off the light this does not happen.

74

Frostbite Theater - Liquid Oxygen vs. Liquid Nitrogen - Behind the Scenes  

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

Paramagnetism Paramagnetism Previous Video (Paramagnetism) Frostbite Theater Main Index Next Video (Opposites Attract and Likes Repel) Opposites Attract and Likes Repel Behind the Scenes A behind the scenes look at the making of an episode of Frostbite Theater! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: Welcome to the behind the scenes look at the making of Frostbite Theater. Steve: Yes, today we're hoping to film three... three? Joanna: Two. Steve: Because Joanna doesn't think she knows her lines for the third one yet. But three episodes, well, two episodes of Frostbite Theater. But, before we do that, we want to give you sort of feel for what goes on into

75

DIFFRACTION STUDIES OF ICE Alexe BOSAK  

E-Print Network (OSTI)

Ic 28o halo observed at least 7 times since 1629 octahedral particles of ice Ic! #12;Cooling downDIFFRACTION STUDIES OF ICE Alexeï BOSAK European Synchrotron Radiation Facility #12;Ice as the mild threat ice Ih the only ice in the crust #12;Ice as the absolute weapon Ice IX : melting point 45.8°C

Titov, Anatoly

76

The Viscosity of Ice  

Science Journals Connector (OSTI)

11 September 1908 research-article The Viscosity of Ice R. M. Deeley The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings of...

1908-01-01T23:59:59.000Z

77

ICE Raids: Compounding Production, Contradiction, and Capitalism  

E-Print Network (OSTI)

America: Factories and ICE Raids Produce Citizens Americansubjects. ICE raids (re)produce workers contradictoryfactories and ICE raids have come to produce immigrant

Reas, Elizabeth I

2009-01-01T23:59:59.000Z

78

Fluid Migration During Ice/Rock Planetesimal Differentiation  

E-Print Network (OSTI)

/water reaction, which will depend on the rate at which water can be segregated from a melting ice/rock core. For the liquid water phase to migrate toward the surface, the denser rock phase must compact. The primary question that this thesis will answer is how...

Raney, Robert 1987-

2012-12-12T23:59:59.000Z

79

Frostbite Theater  

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

Welcome to Frostbite Theater, a collection of science videos produced by Welcome to Frostbite Theater, a collection of science videos produced by Jefferson Lab! Liquid Nitrogen Experiments Have you ever wanted to play with liquid nitrogen, but didn't happen to have any lying around the house? No problem! We did the experiments and filmed them for your viewing pleasure! Freezing Balloons! Freezing Balloons! Instant Liquid Nitrogen Balloon Party! Instant Liquid Nitrogen Balloon Party! Shattering Flowers! Shattering Flowers! Let's Pour Liquid Nitrogen on the Floor! Let's Pour Liquid Nitrogen on the Floor! Giant Koosh Ball! Giant Koosh Ball! Egg + Liquid Nitrogen + Time-lapse! Egg + Liquid Nitrogen + Time-lapse! Dry Ice vs. Liquid Nitrogen! Dry Ice vs. Liquid Nitrogen! Liquid Nitrogen Cooled Dry Ice in Water! Liquid Nitrogen Cooled Dry Ice in Water!

80

Nitrogen dioxide detection  

DOE Patents (OSTI)

Method and apparatus for detecting the presence of gaseous nitrogen dioxide and determining the amount of gas which is present. Though polystyrene is normally an insulator, it becomes electrically conductive in the presence of nitrogen dioxide. Conductance or resistance of a polystyrene sensing element is related to the concentration of nitrogen dioxide at the sensing element.

Sinha, Dipen N. (Los Alamos, NM); Agnew, Stephen F. (Los Alamos, NM); Christensen, William H. (Buena Park, CA)

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Optimizing hydrocarbon recoveries in nitrogen rejection units  

SciTech Connect

In order to address conceptual questions such as process selection and natural gas liquids plant integration, an understanding of the effects of several additional factors on nitrogen rejection unit design is important. These factors, which may influence optimum hydrocarbon recovery, installed compression, etc., include current and forecast values for natural gas and utilities, project life, plant size, feed gas composition and product specifications, feed pressure, and process variations. Prices, project life, and plant size are analyzed in detail and presented in terms of methane recoveries as a function of nitrogen content in the feed for both double and single column processes. Trends are qualitatively discussed for the remaining factors. 13 references.

Chesney, J.D.; Davis, R.A.; Hilton, M.F.; Vines, H.L.

1983-01-01T23:59:59.000Z

82

Ice cream headache  

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

Ice cream headache Ice cream headache Name: fath Status: N/A Age: N/A Location: N/A Country: N/A Date: Around 1993 Question: What causes an "ice cream headache"? Are they dangerous? What would happen if I induced an ice cream headache when I had a regular headache? Replies: This is really a neat question. I am certainly no expert on headaches, but it has a lot to do blood circulation in the sinuses and around and within the brain. Why do some people get them easily and other seem resistant? The cold might restrict blood flow which is the basis for the problem. An Ice cream headache can be turned "on" or "off" by adjusting the rate of consumption, Slurpees work best, so really cold stuff enhances the effect. Are there stages: cold sensation, lingering headache, subsiding headache, warming, etc? Does the cold actually create similar headache "conditions" or does the brain confused cause it cannot directly feel pain? The difference in people is probably due to differences in arteriole branching and general circulation. In my experience smokers get worse headaches than nonsmokers of the same age. Do you find a similar trend? I am trying to stimulate discussion!

83

Ice Heating Up Cold Clouds | EMSL  

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

Ice Heating Up Cold Clouds Ice Heating Up Cold Clouds In a heated battle, ice crystals win the competition for cloud water vapor The mighty cloud ice crystal appears deceptively...

84

Designing for effective stationkeeping in ice  

E-Print Network (OSTI)

and intervention vessels for Arctic oil and gas. #12;2. An effective Ice Management system · Ice Management for the CIVArctic vessel. - Comparison with the ice model tests carried out in the Aker Arctic ice tank in May 2011

Nørvåg, Kjetil

85

Z .Cold Regions Science and Technology 28 1998 189202 Antifreeze thermal ice core drilling: an effective approach to the  

E-Print Network (OSTI)

and intermediate ice coring was done with large thermal or electromechanical drilling systems using hy- Zdrophobic and Rufli, 1994; .Blake et al., 1998 . For non liquid filled boreholes, a thermal drill can go deeper due to its large clearance. The depth range of 800­1000 m was achieved with thermal drills in cold ice

Howat, Ian M.

86

Molecules, ices and astronomy  

Science Journals Connector (OSTI)

......research-article Features Molecules, ices and astronomy David A Williams, Wendy A Brown, Stephen...brown@ucl.ac.uk Dept of Physics and Astronomy, University College London, Gower Street...of Chemistry, UCL Dept of Physics and Astronomy, UCL Over the past 40 years, about......

D A Williams; W A Brown; S D Price; J M C Rawlings; S Viti

2007-02-01T23:59:59.000Z

87

ice | proceedings Forensic Engineering  

E-Print Network (OSTI)

ice | proceedings Forensic Engineering Volume 165 Issue FE4 November 2012 Forensic Engineering or economic damage. Research and practice papers are sought on traditional or modern forensic engineering, design and construction. Topics covered also include research and education best practice in forensic

Mottram, Toby

88

Hydrogen and Nitrogen Control in Ladle and Casting Operations  

SciTech Connect

In recent years there has been an increasing demand to reduce and control the amount of dissolved gases in steel. Hydrogen and nitrogen are two of the most important gases which when dissolved in liquid steel affect its properties significantly. Several steelmaking additions have been investigated in this research for their effect on the hydrogen and nitrogen content of steels. It has been established that calcium hydroxide (hydrated lime) acts as a source of hydrogen. Carburizers, such as metallurgical coke, were found to result in no hydrogen pickup when added to liquid steel. Addition of petroleum coke, on the other hand, increased the hydrogen content of liquid steel. Ferroalloy such as medium carbon ferromanganese when added to the liquid iron was found to increase its nitrogen content, the increase being proportional to the amount of ferroalloy added. Similarly, addition of pitch coke, which had a significant nitrogen impurity, increased the nitrogen content of liquid iron. A mathematical model was developed to quantify the absorption of nitrogen and hydrogen from the air bubbles entrained during tapping of liquid steel. During the bottom stirring of liquid metal in a ladle, the inert gas escaping from the top displaces the slag layer and often forms an open eye. The absorption of atmospheric nitrogen through the spout eye was estimated for different slag thickness and gas flow rate. The ultimate goal of this research was to develop a comprehensive set of equations which could predict the nitrogen and hydrogen pickup from their various sources. Estimates of hydrogen and nitrogen pickup during the steel transfer operations such as tapping and ladle stirring and the predicted pickup from steelmaking additions were integrated into empirical equations. The comprehensive model is designed to predict the gas pickup under varying operating conditions such as the metal oxygen and sulfur content, the total tapping or stirring time, the stirring gas flow rate and the slag thickness. The model predictions are based on mathematical and empirical evidence which are derived from thermodynamic and kinetic fundamental principles.

Richard J. Fruehan; Siddhartha Misra

2005-01-15T23:59:59.000Z

89

Image Content Engine (ICE)  

SciTech Connect

The Image Content Engine (ICE) is being developed to provide cueing assistance to human image analysts faced with increasingly large and intractable amounts of image data. The ICE architecture includes user configurable feature extraction pipelines which produce intermediate feature vector and match surface files which can then be accessed by interactive relational queries. Application of the feature extraction algorithms to large collections of images may be extremely time consuming and is launched as a batch job on a Linux cluster. The query interface accesses only the intermediate files and returns candidate hits nearly instantaneously. Queries may be posed for individual objects or collections. The query interface prompts the user for feedback, and applies relevance feedback algorithms to revise the feature vector weighting and focus on relevant search results. Examples of feature extraction and both model-based and search-by-example queries are presented.

Brase, J M

2007-03-26T23:59:59.000Z

90

Hidden force floating ice  

E-Print Network (OSTI)

Because of the segmental specific-heat disparity of the hydrogen bond (O:H-O) and the Coulomb repulsion between oxygen ions, cooling elongates the O:H-O bond at freezing by stretching its containing angle and shortening the H-O bond with an association of larger O:H elongation, which makes ice less dense than water, allowing it to float.

Chang Q. Sun

2015-01-17T23:59:59.000Z

91

Methanesulfonate in the Greenland Ice Sheet Project 2 Ice Core  

E-Print Network (OSTI)

sulfate in the Dye 3 and Camp Century Greenland ice cores infor SO4 2- in the Dye 3, Camp Century, MSA to non-sea salt

Saltzman, E. S; Whung, P.-Y.; Mayewski, P. A

1997-01-01T23:59:59.000Z

92

nitrogen metabolism in lakes i. measurement of nitrogen fixation with ...  

Science Journals Connector (OSTI)

the originally introduced nitrogen gas and the total amount of .... This is accom- of spontaneous O2 production, which .... free nitrogen been available; the cost of.

93

Fire and Ice Issue 9  

E-Print Network (OSTI)

s FIRE AND ICE # 9 IB FIRE ICE #9 A Blake/Avon slash fanzine r Available from: Kathleen Resch POBox 1766 Temple City, CA 91780 Kathleener@aol.com FIRE AND ICE # 9copyright May, 2005 by Kathleen Resch for the contributors. No reprints... or reproduction without the written permission ofthe author/artist This is an amateur publication and is not p intended to infringe upon the rights ofany holders of"Blake's 7" copyrights. FIRE AND ICE 9 TABLE OF CONTENTS LEAVING ROOM 101 by Nova 2 TOO MANY...

Multiple Contributors

2005-01-01T23:59:59.000Z

94

ITP Steel: Hydrogen and Nitrogen Control in Ladle and Casting Operations  

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

In recent years there has been an increasing demand to reduce and control the amount of dissolved gases in steel. Hydrogen and nitrogen are two of the most important gases which when dissolved in liquid steel affect its properties significantly

95

ARM - Lesson Plans: When Land Ice Melts  

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

ice melts? Do you think melting glaciers and other land-based ice masses will make sea level rise? Will it submerge the continents on which the ice used to be? Most of the...

96

The stability of adenosine deaminase and adenosine monophosphate (AMP) deaminase as potential spoilage indicators for postmortem ice stored shrimp  

E-Print Network (OSTI)

stages of ice storage, while adenosine deaminase alone was the ma]or ammonia-producer during the later stages. 1' t 1 V 1 tl ~N1 ~YVII In general, as spoilage occurs, the value of TVN increases. Total volatile nitrogen production is the combined... the early stages of ice storage, and exogenous enzymes or bacterial enzymes become very important in ammonia production at the later stages of ice storage. Figure 9 shows the TVN analysis of extracts taken from pink shrimp during a 21 day storage period...

Cheuk, Wai Lun

1978-01-01T23:59:59.000Z

97

Nitrogen Front Evolution in Purged Polymer Electrolyte Membrane Fuel Cell with Dead-Ended Anode  

E-Print Network (OSTI)

Nitrogen Front Evolution in Purged Polymer Electrolyte Membrane Fuel Cell with Dead-Ended Anode and experimentally verify the evolution of liquid water and nitrogen fronts along the length of the anode channel in a proton exchange membrane fuel cell operating with a dead-ended anode that is fed by dry hydrogen

Stefanopoulou, Anna

98

Therapeutic Hypothermia: Protective Cooling Using Medical Ice...  

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

Therapeutic Hypothermia: Protective Cooling Using Medical Ice Slurry Technology available for licensing: Proprietary method and equipment for making an ice slurry coolant to induce...

99

ARM - Measurement - Cloud ice particle  

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

ice particle ice particle ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud ice particle Particles made of ice found in clouds. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments MET : Surface Meteorological Instrumentation Field Campaign Instruments REPLICATOR : Balloon-borne Ice Crystal Replicator CPI : Cloud Particle Imager CVI-AIR : Counterflow Virtual Impactor LEARJET : Lear Jet PARTIMG : Particle imager UAV-PROTEUS-MICRO : Proteus Cloud Microphysics Instruments

100

Ice deformation near SHEBA R. W. Lindsay  

E-Print Network (OSTI)

in the vicinity of the Surface Heat Budget of the Arctic Ocean (SHEBA) ice camp that is suitable for forcing factor for regional heat fluxes, ice growth and melt rates, and ice strength [Maykut, 1982Ice deformation near SHEBA R. W. Lindsay Polar Science Center, University of Washington, Seattle

Lindsay, Ron

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Comment on ``A quantitative framework for interpretation of basal ice facies formed by ice  

E-Print Network (OSTI)

heave would be expected to produce were revealed beneath the Kamb Ice Stream by the pioneering boreholeComment on ``A quantitative framework for interpretation of basal ice facies formed by ice quantitative framework for interpretation of basal ice facies formed by ice accretion over subglacial sediment

Worster, M. Grae

102

Ice coring on Vestfonna Ice Cap Contact person: John Moore (jmoore@ulapland.fi).  

E-Print Network (OSTI)

reach bedrock about 4 tons of ice will need to be flown out to Longyearbyen in insulated boxesIce coring on Vestfonna Ice Cap Contact person: John Moore (jmoore@ulapland.fi). Participants, Polish Academy of Science glowacki@igf.edu.pl Science: Ice cores from the glaciers outside the main ice

Moore, John

103

ORIGINAL PAPER A bacterial ice-binding protein from the Vostok ice core  

E-Print Network (OSTI)

to produce a 54 kDa ice-binding protein (GenBank EU694412) that is similar to ice-binding proteins previously- vival at sub-zero temperatures by producing proteins that bind to and inhibit the growth of ice crystalsORIGINAL PAPER A bacterial ice-binding protein from the Vostok ice core James A. Raymond ? Brent C

Christner, Brent C.

104

The Effects of Rotation and Ice Shelf Topography on Frazil-Laden Ice Shelf Water Plumes  

E-Print Network (OSTI)

, Antarctica. In addition, it is found that the model only produces reasonable marine ice formation rates whenThe Effects of Rotation and Ice Shelf Topography on Frazil-Laden Ice Shelf Water Plumes PAUL R of the dynamics and thermodynamics of a plume of meltwater at the base of an ice shelf is presented. Such ice

Feltham, Daniel

105

IceCube Collaboration Governance Document IceCube Collaboration Governance Document  

E-Print Network (OSTI)

IceCube Collaboration Governance Document IceCube Collaboration Governance Document Revision 8.1, November 21, 2014 Page 1 of 20 #12;IceCube Collaboration Governance Document IceCube Collaboration Governance Document Revision 8.1, November 21, 2014 Collaboration Objectives The IceCube Collaboration (the

Saffman, Mark

106

Climatic Ice Core Records from the Tropical Quelccaya Ice Cap  

Science Journals Connector (OSTI)

...DANSGAARD, W, LATE CENOZOIC GLACIA 37 ( 1971 ). DANSGAARD, W, ONE THOUSAND CENTURIES OF CLIMATIC RECORD FROM CAMP CENTURY ON GREENLAND ICE SHEET, SCIENCE 166 : 377 ( 1969 ). DANSGAARD, W, STABLE ISOTOPES IN PRECIPITATION, TELLUS 16...

LONNIE G. THOMPSON; STEFAN HASTENRATH; BENJAMN MORALES ARNAO

1979-03-23T23:59:59.000Z

107

Fire and Ice Issue 2  

E-Print Network (OSTI)

. fipl cpn r FLASHPOINT A flame that can't be seen, cloaked in black and silver and disdain, born of anger and of love no longer dared. An ice-encrusted soul, dormant in the aftermath of accusations piled like snow against the heated passions of a man who...^ $$% i&l /P^ \\0 rffej FIRE AND ICE AVAILABLE FROM Kathleen Resch PO Box 1766 Temple City, CA 91780 FIRE AND ICE II TABLE OF CONTENTS COVER by Phoenix FRONTISPIECE by Gayle Feyrer "Flashpoint" by Rachel Duncan 1 PEDESTAL by Thomas 2 "A Damn Fine...

Multiple Contributors

1993-01-01T23:59:59.000Z

108

Fire and Ice Issue 7  

E-Print Network (OSTI)

       ' FIRE and ICE # 7 -p! jP) FIRE AND ICE VII Available from: Kathleen Resch PO Box 1766 Temple City, CA 91780 Kathleener@aol.com May 2002by Kathleen Reschfor the contributors. No reprints or reproduction without the written... permission of the author/artist. Thisis an amateur publication and is not in tended to infringe upon the rights ofTerryNation, BBC-TV or any others. i - J FIRE AND ICE VI Table of Contents HALF A LOAF by Linda Norman 1 GROUNDHOG LAY by Predatrlx 5 PLAYTIME...

Multiple Contributors

2002-01-01T23:59:59.000Z

109

Ice mechanics and risks to offshore structures  

SciTech Connect

This volume brings together the results of all salient research development in ice engineering, from smaller scale to full size tests on ice strength and ice mechanics which is essential criteria for the design of safe, cost effective structures. Much of the data has been released from confidential industry files and thus allows, for the first time, a full appraisal of the subject. Contents include - Types and Distribution of Ice, Mechanical Properties, Measurements of Ice-Structure Interaction, and Analysis of Ice Failure and Design Ice Loads. This work is completed with a full literary review and subject index.

Sanderson, T.J.O.

1988-01-01T23:59:59.000Z

110

Experimental constraints on the kinetics of ice lens initiation and growth  

Science Journals Connector (OSTI)

Ice lenses are formed by the migration and solidification of unfrozen water during soil freezing, which can lead to the upwards displacement of the ground surface known as frost heave. The complicated interplay between heat and mass transport that causes ice lens formation has been addressed by several theoretical models, but uncertainties remain that require further experimental constraints. In particular, the initiation of ice lenses has long posed theoretical difficulties. We performed a series of stepwise freezing experiments in fine granular materials to observe the initiation and growth of ice lenses. Our experiments demonstrate clear and systematic relationships between the behavior of ice lenses, and the particle size and cooling temperature. Ice lenses are thicker when formed in sediments with smaller particle sizes and the initial formation position is further from the cooled boundary when it is set to lower temperatures. Our temperature measurements and photographic documentation demonstrate that ice lenses are formed below the nominal melting temperature, at a location that is sufficiently distant for the freezing velocity to have slowed below a threshold. We compared our experimental results to numerical predictions of ice lens formation that were applied to our experimental conditions. Our experimental trends are consistent with predictions of our simple, initial model. However, important quantitative differences motivate a refined treatment that emphasizes the kinetics of liquid supply from the pore space through the thin films that separate ice lenses from particle surfaces. We obtained good quantitative agreement between our experimental measurements and the refined model predictions, emphasizing the importance of kinetic effects as a control in ice lens initiation and growth.

Tomotaka Saruya; Kei Kurita; Alan W. Rempel

2013-03-18T23:59:59.000Z

111

An experimental and theoretical study of the ice accretion process during artificial and natural icing conditions  

E-Print Network (OSTI)

Real-time measurements of ice growth during artificial and natural icing conditions were conducted using an ultrasonic pulse-echo technique. This technique allows ice thickness to be measured with an accuracy of ?0.5 mm; ...

Kirby, Mark Samuel

1986-01-01T23:59:59.000Z

112

Phase-field theory of brine entrapment in sea ice: Short-time frozen microstructures  

E-Print Network (OSTI)

We analyze the early phase of brine entrapment in sea ice, using a phase field model. This model for a first-order phase transition couples non-conserved order parameter kinetics to salt diffusion. The evolution equations are derived from a Landau-Ginzburg order parameter gradient dynamics together with salinity conservation. The numerical solution of model equations by an exponential time differencing scheme describes the time evolution of phase separation between liquid water with high salinity and the ice phase with low salinity. The numerical solution in one and two dimensions indicates the formation of one dominant wavelength which sets the length scale of short-time frozen structures. A stability analysis provides the phase diagram in terms of two Landau parameters. It is distinguished an uniform ice phase, a homogeneous liquid saline water solution and a phase where solidification structures can be formed. The Landau parameters are extracted from the supercooling and superheating as well as the freezin...

Thoms, Silke; Morawetz, Klaus

2014-01-01T23:59:59.000Z

113

Total reflection infrared spectroscopy of water-ice and frozen aqueous NaCl solutions  

SciTech Connect

Liquid-like and liquid water at and near the surface of water-ice and frozen aqueous sodium chloride films were observed using attenuated total reflection infrared spectroscopy (ATR-IR). The concentration of NaCl ranged from 0.0001 to 0.01 M and the temperature varied from the melting point of water down to 256 K. The amount of liquid brine at the interface of the frozen films with the germanium ATR crystal increased with salt concentration and temperature. Experimental spectra are compared to reflection spectra calculated for a simplified morphology of a uniform liquid layer between the germanium crystal and the frozen film. This morphology allows for the amount of liquid observed in an experimental spectrum to be converted to the thickness of a homogenous layer with an equivalent amount of liquid. These equivalent thickness ranges from a nanometer for water-ice at 260 K to 170 nm for 0.01 M NaCl close to the melting point. The amounts of brine observed are over an order of magnitude less than the total liquid predicted by equilibrium thermodynamic models, implying that the vast majority of the liquid fraction of frozen solutions may be found in internal inclusions, grain boundaries, and the like. Thus, the amount of liquid and the solutes dissolved in them that are available to react with atmospheric gases on the surfaces of snow and ice are not well described by thermodynamic equilibrium models which assume the liquid phase is located entirely at the surface.

Walker, Rachel L.; Searles, Keith; Willard, Jesse A.; Michelsen, Rebecca R. H., E-mail: RMichelsen@rmc.edu [Department of Chemistry, Randolph-Macon College, P.O. Box 5005, Ashland, Virginia 23005 (United States)] [Department of Chemistry, Randolph-Macon College, P.O. Box 5005, Ashland, Virginia 23005 (United States)

2013-12-28T23:59:59.000Z

114

Removal of nitrogen and sulfur from oil-shale  

SciTech Connect

This patent describes a process for enhancing the removal of nitrogen and sulfur from oil-shale. The process consists of: (a) contacting the oil-shale with a sufficient amount of an aqueous base solution comprised of at least a stoichiometric amount of one or more alkali metal or alkaline-earth metal hydroxides based on the total amount of nitrogen and sulfur present in the oil-shale. Also necessary is an amount sufficient to form a two-phase liquid, solid system, a temperature from about 50/sup 0/C to about 350/sup 0/C., and pressures sufficient to maintain the solution in liquid form; (b) separating the effluents from the treated oil-shale, wherein the resulting liquid effluent contains nitrogen moieties and sulfur moieties from the oil-shale and any resulting gaseous effluent contains nitrogen moieties from the oil-shale, and (c) converting organic material of the treated oil-shale to shale-oil at a temperature from about 450/sup 0/C to about 550/sup 0/C.

Olmstead, W.N.

1986-01-28T23:59:59.000Z

115

Viscosity Measurements on Nitrogen  

Science Journals Connector (OSTI)

Viscosity Measurements on Nitrogen ... (15)?Clarke, A. G.; Smith, E. B. Low-temperature viscosities and intermolecular forces of simple gases. ... The coupling also serves as a frictionless bearing for a slender rotating cylindrical body which is slowed down due to the viscous drag of the fluid surrounding the cylinder. ...

Daniel Seibt; Eckhard Vogel; Eckard Bich; Daniel Buttig; Egon Hassel

2006-01-11T23:59:59.000Z

116

ODD NITROGEN PROCESSES  

SciTech Connect

This chapter is in three parts. The first concerns interpretations that can be made from atmospheric observations regarding nitrogen compounds and ozone, the second reviews some predictions made by atmospheric models, and the third compares between certain model results and atmospheric measurements with an emphasis on detecting evidence of significant disagreements.

Johnston, Harold S.

1980-01-01T23:59:59.000Z

117

Can xenon in water inhibit ice growth? Molecular dynamics of phase transitions in water$-$Xe system  

E-Print Network (OSTI)

Motivated by recent experiments showing the promise of noble gases as cryoprotectants, we perform molecular dynamics modeling of phase transitions in water with xenon under cooling. We study the structure and dynamics of xenon water solution as a function of temperature. Homogeneous nucleation of clathrate hydrate phase is observed and characterized. As the temperature is further reduced we observe hints of dissociation of clathrate due to stronger hydrophobic hydration, pointing towards a possible instability of clathrate at cryogenic temperatures and conversion to an amorphous phase comprised of "xenon + hydration shell" Xe$\\cdot$(H$_{2}$O)$_{21.5}$ clusters. Simulations of ice$-$xenon solution interface in equilibrium and during ice growth reveal the effects of xenon on the ice$-$liquid interface, where adsorbed xenon causes roughening of ice surface but does not preferentially form clathrate. These results provide evidence against the ice-blocker mechanism of xenon cryoprotection.

Vasilii I. Artyukhov; Alexander Yu. Pulver; Alex Peregudov; Igor Artyuhov

2014-07-11T23:59:59.000Z

118

EMSL - liquids  

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

liquids en Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 C. http:www.emsl.pnl.govemslwebpublicationsiodine-solubility-low-activity-waste-borosilicate...

119

Polarity Programmed Gas-Liquid Chromatography  

Science Journals Connector (OSTI)

......component on the carrier gas, is investigated...component of the carrier gas. Introduction One...strength, i.e., the solubility of the solute in...temperature programming in gas-liquid chromatography...of carrier gas for nitrogen, helium, methane...of other solutes. Water vapor or steam are......

Jon F. Parcher; Theodore N. Westlake

1976-07-01T23:59:59.000Z

120

Correlation between thermodynamic anomalies and pathways of ice nucleation in supercooled water  

SciTech Connect

The well-known classical nucleation theory (CNT) for the free energy barrier towards formation of a nucleus of critical size of the new stable phase within the parent metastable phase fails to take into account the influence of other metastable phases having density/order intermediate between the parent metastable phase and the final stable phase. This lacuna can be more serious than capillary approximation or spherical shape assumption made in CNT. This issue is particularly significant in ice nucleation because liquid water shows rich phase diagram consisting of two (high and low density) liquid phases in supercooled state. The explanations of thermodynamic and dynamic anomalies of supercooled water often invoke the possible influence of a liquid-liquid transition between two metastable liquid phases. To investigate both the role of thermodynamic anomalies and presence of distinct metastable liquid phases in supercooled water on ice nucleation, we employ density functional theoretical approach to find nucleation free energy barrier in different regions of phase diagram. The theory makes a number of striking predictions, such as a dramatic lowering of nucleation barrier due to presence of a metastable intermediate phase and crossover in the dependence of free energy barrier on temperature near liquid-liquid critical point. These predictions can be tested by computer simulations as well as by controlled experiments.

Singh, Rakesh S.; Bagchi, Biman, E-mail: bbagchi@sscu.iisc.ernet.in [Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012 (India)] [Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012 (India)

2014-04-28T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Mantle viscosity and ice-age ice sheet topography  

SciTech Connect

Ice-age paleotopography and mantle viscosity can both be inferred from observations of Earth`s response to the most recent deglaciation event of the current ice age. This procedure requires iterative application of a theoretical model of the global process of glacial isostatic adjustment. Results demonstrate that the iterative inversion procedure converges to a paleotopography that is extremely close to that from the ICE-4G model. The accompanying mantle viscosity profile is furthermore shown to reconcile the requirements of aspherical geoid anomalies related to the mantle convection process, thus resolving a fundamental issue concerning mantle rheology. The combined model also explains postglacial sea level histories for the east cost of the United States. 28 refs., 9 figs.

Peltier, W.R. [Univ. of Toronto, Ontario (Canada)

1996-09-06T23:59:59.000Z

122

Methane/nitrogen separation process  

DOE Patents (OSTI)

A membrane separation process is described for treating a gas stream containing methane and nitrogen, for example, natural gas. The separation process works by preferentially permeating methane and rejecting nitrogen. The authors have found that the process is able to meet natural gas pipeline specifications for nitrogen, with acceptably small methane loss, so long as the membrane can exhibit a methane/nitrogen selectivity of about 4, 5 or more. This selectivity can be achieved with some rubbery and super-glassy membranes at low temperatures. The process can also be used for separating ethylene from nitrogen. 11 figs.

Baker, R.W.; Lokhandwala, K.A.; Pinnau, I.; Segelke, S.

1997-09-23T23:59:59.000Z

123

Methane/nitrogen separation process  

DOE Patents (OSTI)

A membrane separation process for treating a gas stream containing methane and nitrogen, for example, natural gas. The separation process works by preferentially permeating methane and rejecting nitrogen. We have found that the process is able to meet natural gas pipeline specifications for nitrogen, with acceptably small methane loss, so long as the membrane can exhibit a methane/nitrogen selectivity of about 4, 5 or more. This selectivity can be achieved with some rubbery and super-glassy membranes at low temperatures. The process can also be used for separating ethylene from nitrogen.

Baker, Richard W. (Palo Alto, CA); Lokhandwala, Kaaeid A. (Menlo Park, CA); Pinnau, Ingo (Palo Alto, CA); Segelke, Scott (Mountain View, CA)

1997-01-01T23:59:59.000Z

124

Ice Energy | Open Energy Information  

Open Energy Info (EERE)

Ice Energy Ice Energy Jump to: navigation, search Logo: Ice Energy Name Ice Energy Address 9351 Eastman Park Drive Place Windsor, Colorado Zip 80550 Sector Renewable energy Product Energy Storage Year founded 2003 Number of employees 51-200 Phone number 970-545-3630 Website http://www.ice-energy.com/ Coordinates 40.4651775°, -104.882° 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":40.4651775,"lon":-104.882,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

125

Physical Controls on Ice Variability in the Bering Sea /  

E-Print Network (OSTI)

region. The model also produces less ice near much of thewinds (Figure 3.13c,d) produce more ice growth and more iceThe model produces variations in total ice area anomalies

Li, Linghan

2013-01-01T23:59:59.000Z

126

Questions and Answers - If you jumped into a pool of liquid oxygen, would  

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

Is there anything colderthan liquid nitrogen? Is there anything colder<br>than liquid nitrogen? Previous Question (Is there anything colder than liquid nitrogen?) Questions and Answers Main Index Next Question (What's the melting point of steel?) What's the melting point of steel? If you jumped into a pool of liquid oxygen, would your body instantly crystallize? Nothing happens instantly. The first thing would be frostbite to the skin followed by the onset of hypothermia to the internal organs. No doubt everything would "freeze up" with time. What this really brings up though is safety issues with cryogenic fluids, that is, those substances that are normally gases (like oxygen, nitrogen, carbon dioxide, hydrogen, or helium) at room temperature but can be changed to liquid form through the use of

127

ICE Solar | Open Energy Information  

Open Energy Info (EERE)

ICE Solar ICE Solar Jump to: navigation, search Name ICE Solar Place Hyderabad, Andhra Pradesh, India Sector Solar Product India-based company focused on solar PV engineering, procurement and construction opportunities. Coordinates 17.6726°, 77.5971° 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":17.6726,"lon":77.5971,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

128

Thermal Storage with Ice Harvesting Systems  

E-Print Network (OSTI)

Application of Harvesting Ice Storage Systems. Thermal storage systems are becoming widely accepted techniques for utility load management. This paper discusses the principles of ice harvesting equipment and their application to the multi...

Knebel, D. E.

1986-01-01T23:59:59.000Z

129

Phase-field theory of brine entrapment in sea ice: Short-time frozen microstructures  

E-Print Network (OSTI)

We analyze the early phase of brine entrapment in sea ice, using a phase field model. This model for a first-order phase transition couples non-conserved order parameter kinetics to salt diffusion. The evolution equations are derived from a Landau-Ginzburg order parameter gradient dynamics together with salinity conservation. The numerical solution of model equations by an exponential time differencing scheme describes the time evolution of phase separation between liquid water with high salinity and the ice phase with low salinity. The numerical solution in one and two dimensions indicates the formation of one dominant wavelength which sets the length scale of short-time frozen structures. A stability analysis provides the phase diagram in terms of two Landau parameters. It is distinguished an uniform ice phase, a homogeneous liquid saline water solution and a phase where solidification structures can be formed. The Landau parameters are extracted from the supercooling and superheating as well as the freezing point temperature of water. With the help of realistic parameters the distribution of brine inclusions is calculated and found in agreement with the measured samples. The size of the ice domains separating regions of concentrated seawater depends on salinity and temperature and corresponds to the size of sea ice platelets obtained from a morphological stability analysis for the solidification of salt water.

Silke Thoms; Bernd Kutschan; Klaus Morawetz

2014-05-01T23:59:59.000Z

130

Love wave surface acoustic wave sensor for ice detection on aircraft  

Science Journals Connector (OSTI)

This paper presents the design fabrication experimental results and theoretical validation of a Love wave surface acoustic wave sensor for detecting the phase change from liquid water to solid ice. The sensing of this phase transition is due to the shear horizontal nature of Love waves which couple to a solid (ice) but not to a liquid (water). An SiO2 film of thickness 3.2 ?m deposited on an ST cut quartz wafer via plasma?enhanced chemical?vapor deposition acts as the guiding layer for Love waves. Testing is carried out with the water or ice placed directly in the propagation path of Love waves. An oscillation frequency shift of 2 MHz is observed when water on the sensor is frozen and melted cyclically. The contribution to the frequency shift is explained in terms of the acousto?electric effect (high permittivity and conductivity of water relative to ice) mass loading and elastic film formation (solid ice). An arrangement for wireless interrogation of the sensor is proposed which is particularly attractive for aircraft and rotorcraft applications obviating the need for complex wiring and local power sources. t

Vasundara V. Varadan; Sunil Gangadharan; Vijay K. Varadan

1999-01-01T23:59:59.000Z

131

LABORATORY INDENTATION TESTS SIMULATING ICE-STRUCTURE INTERACTIONS USING CONE-SHAPED ICE  

E-Print Network (OSTI)

sample protruding from a steel retaining ring (Figure 1). The closing speed and penetration rate test scenario were ice sample type, ice temperature, interaction rate, penetration depth, cone angle cone angle, indentation rate, ice type and temperature, and indenter roughness were varied. All ice

Bruneau, Steve

132

Sea ice control of water isotope transport to Antarctica and implications for ice core interpretation  

E-Print Network (OSTI)

associated with diabatic heating. The interior deuterium excess response is more strongly affected by sea ice ice and the local conditions may have remote influences [Jacobs and Comiso, 1997; StammerjohnSea ice control of water isotope transport to Antarctica and implications for ice core

Noone, David

133

New study details glacier ice loss following ice shelf July 25, 2011  

E-Print Network (OSTI)

and Ted #12;Scambos of the NSIDC produced detailed ice loss maps from 2001 to 2009 for the main tributaryNew study details glacier ice loss following ice shelf collapse July 25, 2011 Contact: Anthony Lane UMBC (410) 455-5793 alane@umbc.edu Katherine Leitzell National Snow and Ice Data Center University

Cambridge, University of

134

Numerical Age Computation of the Antarctic Ice Sheet for Dating Deep Ice Cores  

E-Print Network (OSTI)

Numerical Age Computation of the Antarctic Ice Sheet for Dating Deep Ice Cores Bernd M¨ugge1 for the computation of the age of ice is discussed within the frame of numerical ice sheet modelling. The first method of a numerical diffusion term to stabilize the solution and therefore produces arbitrary results in a near

Calov, Reinhard

135

Gas isotopes in ice reveal a vegetated central Greenland during ice sheet invasion  

E-Print Network (OSTI)

= ) in the silty ice, reaching values as high as 22 mM [Tison et al., 1998]. Ammonium oxalate is produced duringGas isotopes in ice reveal a vegetated central Greenland during ice sheet invasion R. Souchez,1 J prevailing during build-up of the Greenland Ice Sheet (GIS) are not yet established. Here we use results from

Chappellaz, Jérôme

136

AMSR-E Algorithm Theoretical Basis Document: Sea Ice Products  

E-Print Network (OSTI)

the Arctic perennial ice regions, and the ice temperature is produced from an algorithm similar to the Nimbus1 AMSR-E Algorithm Theoretical Basis Document: Sea Ice Products Thorsten Markus and Donald J 20771 1. Overview The AMSR-E sea ice standard level 3 products include sea ice concentration, sea ice

Waliser, Duane E.

137

Fire and Ice Issue 6  

E-Print Network (OSTI)

9#HDIQNV3>IM ".: FIRE AND ICE VI Available from: Kathleen Resch PO Box 1766 Temple City, CA 91780 October, 2000 by Kathleen Resch for the contributors. No reprints or reproduction without the written permission of the author.../artist. This is an amateur publication and is not intended to infringe upon the rights ofTerry Nation, BBC-TV or any others. FIRE AND ICE VI 1 Table of Contents A DANGEROUS CONCEPT by Nova 1 A FRIEND IN NEED... by Julia Stamford 14 ...IS A FRIEND INDEED by Julia Stamford 19...

Multiple Contributors

2000-01-01T23:59:59.000Z

138

Fire and Ice Issue 3  

E-Print Network (OSTI)

,fpl ^1 FIRE AND ICE Available from: Kathleen Resch PO Box 1766 Temple City,CA 91780 III May, 1995 by Kathleen Resch for the contributors. No reprints or reproduction without the written permission of the author/artist. This is an amateur... publication and is not intended to infringe upon the rightsof "Blake's 7" copyright holders.. FIRE AND ICE TABLE OF CONTENTS THE GIFT by Pat Terra 1 "innerspace" by Pat Terra 24 WILD, BEAUTIFUL AND DAMNED by Gemini 25 SET THE NIGHT ON FIRE by Riley Cannon 40...

Multiple Contributors

1995-01-01T23:59:59.000Z

139

Paleotopography of glacial-age ice sheets  

SciTech Connect

This is technical comment and response to the subject of paleotophography of glacial age ice sheets. The model presented by Peltier reconstructing the paleotopography of glacial age ice sheets has implications for atmospheric general circulation models of ice age climate. In addition, the model suggests that the glacial-age Antarctic Ice Sheet was significantly larger than today`s. The commentor, Edwards, suggests there is a discrepancy between data from Papua New Guinea and the model results.

Edwards, R.L. [Univ. of Minnesota, Minneapolis, MN (United States)

1995-01-27T23:59:59.000Z

140

Coherent radar ice thickness measurements over the Greenland ice sheet  

E-Print Network (OSTI)

systems are designed to use pulse compression techniques and coherent integration to obtain the high sensitivity required to measure the thickness of more than 4 km of cold ice. We used these systems to collect radar data over the interior and margins...

Gogineni, S. Prasad; Tammana, Dilip; Braaten, David A.; Leuschen, C.; Legarsky, J.; Kanagaratnam, P.; Stiles, J.; Allen, C.; Jezek, K.; Akins, T.

2001-12-27T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Ice-Sheet Response to Oceanic Forcing  

Science Journals Connector (OSTI)

...regional-scale ice-ocean simulations suggests that the state-of-Texas...ice shelfs rapid demise, which would...providing accurate simulation and projection of...observation and modeling indicate that increases...day (38, 39). Rapid melting of ice cliffs...with an emphasis on automated and smart-sensing...

Ian Joughin; Richard B. Alley; David M. Holland

2012-11-30T23:59:59.000Z

142

Pressure dependence of the solubility of nitrogen, argon, krypton, and xenon in water  

Science Journals Connector (OSTI)

Measurements are reported for the pressure dependence of the Ostwald L and mole?fraction x 2solubilities for nitrogen argon krypton and xenon in water at 25.0?C. The approximate pressure ranges were: N2 44116 atm; Ar 22101 atm; Kr 3381 atm; and Xe 548 atm. Our experimental technique is a modified Van Slyke method which allows the simultaneous determination of L x 2 and partial molar volume v 2 of the solute gas in the solvent. For N2 Ar and Kr we observe deviations from Henrys Law f 2=k H x 2 which vary linearly with pressure. For example the measured values of Henrys constant range from k H (25?C 44.6 atm)=90?269 atm to k H (25?C 115.8 atm)=100?340 atm for N2 in water. Extrapolation of the data to low pressure yields results for L and x 2 which agree with literature values. For Xe we observe a sharp increase in Henrys constant at pressures above 20 atm. The measured partial molar volume also changes sharply from 47 to ?125 cm3/mol. This is attributed to the observed onset of ice?like clathrates at pressures above 20 atm. The solubility data are analyzed in terms of the KirkwoodBuff solution theory and the role of hydrophobic interactions is discussed. For the Krwater system we compare the experimental results to recent computer simulations. We also use statistical mechanics arguments to introduce a new solubility parameter which is useful in understanding high?pressure measurements. We conclude by discussing extensions of this work to other gasliquid systems.

Richard P. Kennan; Gerald L. Pollack

1990-01-01T23:59:59.000Z

143

Medical ice slurry production device  

DOE Patents (OSTI)

The present invention relates to an apparatus for producing sterile ice slurries for medical cooling applications. The apparatus is capable of producing highly loaded slurries suitable for delivery to targeted internal organs of a patient, such as the brain, heart, lungs, stomach, kidneys, pancreas, and others, through medical size diameter tubing. The ice slurry production apparatus includes a slurry production reservoir adapted to contain a volume of a saline solution. A flexible membrane crystallization surface is provided within the slurry production reservoir. The crystallization surface is chilled to a temperature below a freezing point of the saline solution within the reservoir such that ice particles form on the crystallization surface. A deflector in the form of a reciprocating member is provided for periodically distorting the crystallization surface and dislodging the ice particles which form on the crystallization surface. Using reservoir mixing the slurry is conditioned for easy pumping directly out of the production reservoir via medical tubing or delivery through other means such as squeeze bottles, squeeze bags, hypodermic syringes, manual hand delivery, and the like.

Kasza, Kenneth E. (Palos Park, IL); Oras, John (Des Plaines, IL); Son, HyunJin (Naperville, IL)

2008-06-24T23:59:59.000Z

144

Subglacial floods beneath ice sheets  

Science Journals Connector (OSTI)

...depth 100m subject to a geothermal heat flux of 50m2 gives...crude estimate). As well as the present theoretical...Atlantic or to the Gulf of Mexico. One reason for supposing...do not know this very well for a palaeo-ice sheet...and P Gogineni2001High geothermal flow, basal melt, and...

2006-01-01T23:59:59.000Z

145

Hydrotreating of coal-derived liquids  

SciTech Connect

The objective of Sandia`s refining of coal-derived liquids project is to determine the relationship between hydrotreating conditions and Product characteristics. The coal-derived liquids used in this work were produced In HTI`s first proof-of-concept run using Illinois No. 8 coal. Samples of the whole coal liquid product, distillate fractions of this liquid, and Criterion HDN-60 catalyst were obtained from Southwest Research Inc. Hydrotreating experiments were performed using a continuous operation, unattended, microflow reactor system. A factorial experimental design with three variables (temperature, (310{degrees}C to 388{degrees}C), liquid hourly space velocity (1 to 3 g/h/cm{sup 3}(cat)), pressure (500 to 1000 psig H{sub 2}) is being used in this project. Sulfur and nitrogen contents of the hydrotreated products were monitored during the hydrotreating experiments to ensure that activity was lined out at each set of reaction conditions. Results of hydrotreating the whole coal liquid showed that nitrogen values in the products ranged from 549 ppM at 320{degrees}C, 3 g/h/cm{sup 3}(cat), 500 psig H{sub 2} to <15 ppM at 400{degrees}C, 1 g/h/ cm{sup 3}(cat), 1000 psig H{sub 2}.

Stohl, F.V.; Lott, S.E.; Diegert, K.V.; Goodnow, D.C.; Oelfke, J.B.

1995-06-01T23:59:59.000Z

146

LNG liquid-liquid immiscibility  

SciTech Connect

Although natural gas species rarely exhibit liquid-liquid immiscibility in binary systems, the presence of additional components can extend the domain of immiscibility in those few binary systems where it already exists or produce immiscibility in binary systems where it had not existed. If the solute has the proper molecular relation to the solvent mixture background, liquid-liquid-vapor (LLV) behavior will occur; such phenomena greatly complicate the design of LNG processing equipment. To aid LNG engineers, researchers mapped the thermodynamic behavior of four ternary LLV systems and examined the effects of the second solvents - ethane, propane, n-butane, and CO/sub 2/ - on the binary methane + n-octane system.

Luks, K.D.; Kohn, J.P.

1981-09-01T23:59:59.000Z

147

Thermal signature reduction through liquid nitrogen and water injection  

E-Print Network (OSTI)

values at thermocouple locations. ................................. 45 IV Temperature values (K)at TC locations for LN2 injection on both gridsandtwoexperimentaldatasets................... 45 x LIST OF FIGURES FIGURE Page 1 Basic elements of a spin... partialdiffr(rhovr)+ rhovr r = Sm (3.4) partialdiffrho partialdifft(rho vectorV + nabla?(rhovectorV vectorV )=-nablaP + nabla???tau + rhovectorg + vectorF (3.5) partialdiffrho partialdifft(rhoE)+nabla?( vectorV (rhoE + P)) = -nabla(kef f nablaT + ??tauef f...

Guarnieri, Jason Antonio

2005-02-17T23:59:59.000Z

148

High Efficiency Energy Conversion Systems for Liquid Nitrogen Automobiles  

E-Print Network (OSTI)

replacements over the lifetime of the vehicle raises the specter of increased heavy metal pollution, were lead environmental burden and, in particular, would avoid the issues of heavy metals pollution associated with Pb energy storage, particularly lead-acid and Ni-Cd batteries. These heavy metal energy storage systems

Laughlin, Robert B.

149

A Nitrogen-Selective Detector for Liquid Chromatography  

Science Journals Connector (OSTI)

......Biological Chemistry and Genetics, University of Texas Medical Branch, Galveston, Texas 77550; and ***Moody College of Marine Sciences, Texas A & M University, Galveston, Texas 77550 Abstract Cultured Gymnodinium breve cells......

K.R. Hill; H.L. Crist

1979-07-01T23:59:59.000Z

150

New ice rules for nanoconfined monolayer ice from first principles  

E-Print Network (OSTI)

Understanding the structural tendencies of nanoconfined water is of great interest for nanoscience and biology, where nano/micro-sized objects may be separated by very few layers of water. Here we investigate the properties of ice confined to a quasi-2D monolayer by a featureless, chemically neutral potential, using density-functional theory simulations with a non-local van der Waals density functional. An ab initio random structure search reveals all the energetically competitive monolayer configurations to belong to only two of the previously-identified families, characterized by a square or honeycomb hydrogen-bonding network, respectively. From an in-depth analysis we show that the well-known ice rules for bulk ice need to be revised for the monolayer, with distinct new rules appearing for the two networks. All identified stable phases for both are found to be non-polar (but with a topologically non-trivial texture for the square) and, hence, non-ferroelectric, in contrast to the predictions of empirical f...

Corsetti, Fabiano; Artacho, Emilio

2015-01-01T23:59:59.000Z

151

Application of holographic interferometry for determining the solubility of gases in liquids  

Science Journals Connector (OSTI)

The effect of a gas dissolved in a liquid on the variation ... sensitivity of this method allows the compressibility of water and the solubility of helium and nitrogen to be studied at pressures below 4 ... for o...

V. B. Konstantinov; A. F. Malyi; V. A. Babenko

2003-07-01T23:59:59.000Z

152

Freezing processes. Hydrate processes. Liquid-liquid extraction  

Science Journals Connector (OSTI)

The ice which separates from brine is almost pure. A salt concentration builds up at the interface of the brine and the ice. In freezing processes, as applied in desalting, many small ice crystals are formed w...

Anthony A. Delyannis; Eurydike A. Delyannis

1974-01-01T23:59:59.000Z

153

Catalyst for hydrotreating carbonaceous liquids  

DOE Patents (OSTI)

A catalyst for denitrogenating and desulfurating carbonaceous liquid such as solvent refined coal includes catalytic metal oxides impregnated within a porous base of mostly alumina with relatively large pore diameters, surface area and pore volume. The base material includes pore volumes of 0.7-0.85 ml/g, surface areas of 200-350 m.sup.2 /g and pore diameters of 85-200 Angstroms. The catalytic metals impregnated into these base materials include the oxides of Group VI metals, molybdenum and tungsten, and the oxides of Group VIII metals, nickel and cobalt, in various combinations. These catalysts and bases in combination have effectively promoted the removal of chemically combined sulfur and nitrogen within a continuous flowing mixture of carbonaceous liquid and hydrogen gas.

Berg, Lloyd (Bozeman, MT); McCandless, Frank P. (Bozeman, MT); Ramer, Ronald J. (Idaho Falls, ID)

1982-01-01T23:59:59.000Z

154

What Happens to Nitrogen in Soils?  

E-Print Network (OSTI)

This publication explains the chemistry of nitrogen, the processes by which nitrogen is added to and removed from the soil, and methods of preventing nitrogen losses on agricultural lands....

Provin, Tony; Hossner, L. R.

2001-07-09T23:59:59.000Z

155

Hydrogen ICE Vehicle Testing Activities  

SciTech Connect

The Advanced Vehicle Testing Activity teamed with Electric Transportation Applications and Arizona Public Service to develop and monitor the operations of the APS Alternative Fuel (Hydrogen) Pilot Plant. The Pilot Plant provides 100% hydrogen, and hydrogen and compressed natural gas (H/CNG)-blended fuels for the evaluation of hydrogen and H/CNG internal combustion engine (ICE) vehicles in controlled and fleet testing environments. Since June 2002, twenty hydrogen and H/CNG vehicles have accumulated 300,000 test miles and 5,700 fueling events. The AVTA is part of the Department of Energys FreedomCAR and Vehicle Technologies Program. These testing activities are managed by the Idaho National Laboratory. This paper discusses the Pilot Plant design and monitoring, and hydrogen ICE vehicle testing methods and results.

J. Francfort; D. Karner

2006-04-01T23:59:59.000Z

156

Tracer transport in the Greenland Ice Sheet: constraints on ice cores and glacial history  

Science Journals Connector (OSTI)

The climate history and dynamics of the Greenland Ice Sheet are studied using a coupled model of the depositional provenance and transport of glacier ice, allowing simultaneous prediction of the detailed isotopic stratigraphy of ice cores at all the major Greenland sites. Adopting a novel method for reconstructing the agedepth relationship, we greatly improve the accuracy of semi-Lagrangian tracer tracking schemes and can readily incorporate an age-dependent ice rheology. The larger aim of our study is to impose new constraints on the glacial history of the Greenland Ice Sheet. Leading sources of uncertainty in the climate and dynamic history are encapsulated in a small number of parameters: the temperature and elevation isotopic sensitivities, the glacialinterglacial precipitation contrast and the effective viscosity of ice in the flow law. Comparing predicted and observed ice layering at ice core sites, we establish plausible ranges for the key model parameters, identify climate and dynamic histories that are mutually consistent and recover the past depositional elevation of ice cores to ease interpretation of their climatic records. With the coupled three-dimensional model of ice dynamics and provenance transport we propose a method to place all the ice core records on a common time scale and use discrepancies to adjust the reconstructed climate history. Analysis of simulated GRIP ice layering and borehole temperature profiles confirms that the GRIP record is sensitive to the dynamic as well as to the climatic history, but not enough to strongly limit speculation on the state of the Greenland Ice Sheet during the Eemian. In contrast, our study indicates that the Dye 3 and Camp Century ice cores are extremely sensitive to ice dynamics and greatly constrain Eemian ice sheet reconstructions. We suggest that the maximum Eemian sea-level contribution of the ice sheet was in the range of 3.54.5m.

Nicolas Lhomme; Garry K.C. Clarke; Shawn J. Marshall

2005-01-01T23:59:59.000Z

157

FAFCO Ice Storage test report  

SciTech Connect

The Ice Storage Test Facility (ISTF) is designed to test commercial ice storage systems. FAFCO provided a storage tank equipped with coils designed for use with a secondary fluid system. The FAFCO ice storage system was tested over a wide range of operating conditions. Measured system performance during charging showed the ability to freeze the tank fully, storing from 150 to 200 ton-h. However, the charging rate showed significant variations during the latter portion of the charge cycle. During discharge cycles, the storage tank outlet temperature was strongly affected by the discharge rate and tank state of charge. The discharge capacity was dependent upon both the selected discharge rate and maximum allowable tank outlet temperature. Based on these tests, storage tank selection must depend on both charge and discharge conditions. This report describes FAFCO system performance fully under both charging and discharging conditions. While the test results reported here are accurate for the prototype 1990 FAFCO Model 200, currently available FAFCO models incorporate significant design enhancements beyond the Model 200. At least one major modification was instituted as a direct result of the ISTF tests. Such design improvements were one of EPRI`s primary goals in founding the ISTF.

Stovall, T.K.

1993-11-01T23:59:59.000Z

158

SolidLiquidVapor Equilibrium Models for Cryogenic Biogas Upgrading  

Science Journals Connector (OSTI)

In cryogenic upgrading processes involving dry ice formation, accurate predictions of solidliquid, solidvapor, and solidliquidvapor equilibria are fundamental for a correct design of the heat exchanger surface in order to achieve the desired biomethane purity. ... Moreover, the liquefied biogas production process, particularly interesting for cryogenic upgrading processes due to the low temperature of the obtained biomethane, requires an accurate knowledge of carbon dioxide solubility in liquid methane to avoid solid deposition. ... For some applications demanding a high energy content gas, namely vehicle fuels and injection in the natural gas grid, the biogas has to be upgraded into biomethane. ...

Mauro Riva; Marco Campestrini; Joseph Toubassy; Denis Clodic; Paolo Stringari

2014-10-13T23:59:59.000Z

159

Proton Ordering of Cubic Ice Ic: Spectroscopy and Computer Simulations  

E-Print Network (OSTI)

by producing rotational Bjerrum L-defects.1 Ambient-pressure hexagonal ice, ice Ih, shows the lowest produced from ice Ih using hydroxide doping, for example, by freezing a 0.1 M KOH solution. Because ice IhProton Ordering of Cubic Ice Ic: Spectroscopy and Computer Simulations Philipp Geiger, Christoph

Dellago, Christoph

160

Climate, Ocean and Sea Ice Modeling (COSIM)  

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

Earth, Space Sciences » Earth, Space Sciences » Climate, Ocean and Sea Ice Modeling (COSIM) Climate, Ocean and Sea Ice Modeling (COSIM) The COSIM project develops advanced ocean and ice models for evaluating the role of ocean and ice in high-latitude climate change and projecting the impacts of high-latitude change on regions throughout the globe. Get Expertise Phil Jones COSIM Email Matthew Hecht COSIM Email Elizabeth Hunke COSIM Email Mat Maltrud COSIM Email Bill Lipscomb COSIM Email Scott Elliott COSIM Email Todd Ringler COSIM Email We are also developing a set of next-generation ocean and ice models with variable resolution horizontal grids to focus resolution on regions of interest or regions where specific processes (like eddies) need to be resolved. Summary The COSIM project develops advanced ocean and ice models for evaluating the

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Historical Antarctic mean sea ice area, sea ice trends, and winds in CMIP5 simulations  

E-Print Network (OSTI)

In contrast to Arctic sea ice, average Antarctic sea ice area is not retreating but has slowly increased since satellite measurements began in 1979. While most climate models from the Coupled Model Intercomparison Project ...

Mahlstein, Irina

162

Neglecting ice-atmosphere interactions underestimates ice sheet melt in millennial-scale deglaciation simulations  

E-Print Network (OSTI)

produce an interactive coupled integration: Atmospheric dynamics were equilibrated to an initial iceconstant ice albedos. None of these cases is able to produceproduce substantial deglaciation on a realistic timescale is attributed to the use of temporally invariant ice

Pritchard, M. S.; Bush, A. B.; Marshall, S. J.

2008-01-01T23:59:59.000Z

163

Shock timing measurements and analysis in deuterium-tritium-ice layered capsule implosions on NIF  

SciTech Connect

Recent advances in shock timing experiments and analysis techniques now enable shock measurements to be performed in cryogenic deuterium-tritium (DT) ice layered capsule implosions on the National Ignition Facility (NIF). Previous measurements of shock timing in inertial confinement fusion implosions [Boehly et al., Phys. Rev. Lett. 106, 195005 (2011); Robey et al., Phys. Rev. Lett. 108, 215004 (2012)] were performed in surrogate targets, where the solid DT ice shell and central DT gas were replaced with a continuous liquid deuterium (D2) fill. These previous experiments pose two surrogacy issues: a material surrogacy due to the difference of species (D2 vs. DT) and densities of the materials used and a geometric surrogacy due to presence of an additional interface (ice/gas) previously absent in the liquid-filled targets. This report presents experimental data and a new analysis method for validating the assumptions underlying this surrogate technique. Comparison of the data with simulation shows good agreement for the timing of the first three shocks, but reveals a considerable discrepancy in the timing of the 4th shock in DT ice layered implosions. Electron preheat is examined as a potential cause of the observed discrepancy in the 4th shock timing.

Robey, H. F.; Celliers, P. M.; Moody, J. D.; Sater, J.; Parham, T.; Kozioziemski, B.; Dylla-Spears, R.; Ross, J. S.; LePape, S.; Ralph, J. E.; Dewald, E. L.; Berzak Hopkins, L.; Kroll, J. J.; Yoxall, B. E.; Hamza, A. V.; Landen, O. L.; Edwards, M. J. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)] [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States); Hohenberger, M.; Boehly, T. R. [Laboratory for Laser Energetics, Rochester, New York 14623 (United States)] [Laboratory for Laser Energetics, Rochester, New York 14623 (United States); Nikroo, A. [General Atomics, San Diego, California 92196 (United States)] [General Atomics, San Diego, California 92196 (United States)

2014-02-15T23:59:59.000Z

164

IceT users' guide and reference.  

SciTech Connect

The Image Composition Engine for Tiles (IceT) is a high-performance sort-last parallel rendering library. In addition to providing accelerated rendering for a standard display, IceT provides the unique ability to generate images for tiled displays. The overall resolution of the display may be several times larger than any viewport that may be rendered by a single machine. This document is an overview of the user interface to IceT.

Moreland, Kenneth D.

2009-06-01T23:59:59.000Z

165

IceT users' guide and reference.  

SciTech Connect

The Image Composition Engine for Tiles (IceT) is a high-performance sort-last parallel rendering library. In addition to providing accelerated rendering for a standard display, IceT provides the unique ability to generate images for tiled displays. The overall resolution of the display may be several times larger than any viewport that may be rendered by a single machine. This document is an overview of the user interface to IceT.

Moreland, Kenneth D.

2011-01-01T23:59:59.000Z

166

A ``triple sea-ice state'' mechanism for the abrupt warming and synchronous ice sheet collapses during Heinrich events  

E-Print Network (OSTI)

the strong sea ice albedo and insulating feedbacks. Such abrupt sea ice changes can also account was trapped at the base of the ice sheet due to the thick and insulating glacier that prevented it fromA ``triple sea-ice state'' mechanism for the abrupt warming and synchronous ice sheet collapses

Tziperman, Eli

167

Viscosity of interfacial water regulates ice nucleation  

SciTech Connect

Ice formation on solid surfaces is an important phenomenon in many fields, such as cloud formation and atmospheric icing, and a key factor for applications in preventing freezing. Here, we report temperature-dependent nucleation rates of ice for hydrophilic and hydrophobic surfaces. The results show that hydrophilic surface presents a lower ice nucleation rate. We develop a strategy to extract the thermodynamic parameters, J{sub 0} and ?, in the context of classical nucleation theory. From the extracted J{sub 0} and ?, we reveal the dominant role played by interfacial water. The results provide an insight into freezing mechanism on solid surfaces.

Li, Kaiyong; Chen, Jing; Zhang, Qiaolan; Zhang, Yifan [Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China) [Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China); University of Chinese Academy of Sciences, Beijing 100049 (China); Xu, Shun; Zhou, Xin [School of Physics, University of Chinese Academy of Sciences, Beijing 100049 (China)] [School of Physics, University of Chinese Academy of Sciences, Beijing 100049 (China); Cui, Dapeng; Wang, Jianjun, E-mail: wangj220@iccas.ac.cn; Song, Yanlin [Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)] [Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)

2014-03-10T23:59:59.000Z

168

Relationships between Water Wettability and Ice Adhesion  

E-Print Network (OSTI)

Ice formation and accretion may hinder the operation of many systems critical to national infrastructure, including airplanes, power lines, windmills, ships, and telecommunications equipment. Yet despite the pervasiveness ...

Meuler, Adam J.

169

Ice Formation in Gas-Diffusion Layers  

E-Print Network (OSTI)

porous media does not exist. Once the fundamentals of iceFundamental Issues in Subzero PEMFC Startup and Operation. UTC Fuel Cells, DOE

Dursch, Thomas

2013-01-01T23:59:59.000Z

170

City of Eagan ?Civic Ice Arena Renovation  

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

Project objectives: Provide a reliable central ice making and heating system that meets the performance requirements of the owner. Reduce operation and maintenance costs.

171

Kinetic energy of protons in ice Ih and water: A path integral study  

Science Journals Connector (OSTI)

The kinetic energy of H and O nuclei has been studied by path integral molecular-dynamics simulations of ice Ih and water at ambient pressure. The simulations were performed by using the q-TIP4P/F model, a point-charge empirical potential that includes molecular flexibility and anharmonicity in the OH stretch of the water molecule. Ice Ih was studied in a temperature range between 210 and 290 K, and water between 230 and 320 K. Simulations of an isolated water molecule were performed in the range 210320 K to estimate the contribution of the intramolecular vibrational modes to the kinetic energy. Our results for the proton kinetic energy KH in water and ice Ih show both agreement and discrepancies with different published data based on deep inelastic neutron-scattering experiments. Agreement is found for water at the experimental melting point and in the range 290300 K. Discrepancies arise because data derived from the scattering experiments predict in water two maxima of KH around 270 and 277 K, and that KH is lower in ice than in water at 269 K. As a check of the validity of the employed water potential, we show that our simulations are consistent with other experimental thermodynamic properties related to KH, such as the temperature dependence of the liquid density, the heat capacity of water and ice at constant pressure, and the isotopic shift in the melting temperature of ice upon isotopic substitution of either H or O atoms. Moreover, the temperature dependence of KH predicted by the q-TIP4P/F model for ice Ih is found to be in good agreement with results of path integral simulations using ab initiodensity-functional theory.

R. Ramrez and C. P. Herrero

2011-08-31T23:59:59.000Z

172

The last Scandinavian Ice Sheet in northwestern Russia: ice flow patterns and decay dynamics  

E-Print Network (OSTI)

U N C O R R EC TED PR O O F The last Scandinavian Ice Sheet in northwestern Russia: ice flow Sheet in northwestern Russia: ice flow patterns and decay dynamics. Boreas, Vol. 35, pp. xxxÁxxx. Oslo) in northwestern Russia took place after a period of periglacial conditions. Till of the last SIS, Bobrovo till

Ingólfsson, ?lafur

173

ARKTOS: An intelligent system for SAR sea ice image classification  

E-Print Network (OSTI)

We present an intelligent system for satellite sea ice image analysis named Advanced Reasoning using Knowledge for T ping Of Sea ice (ARKTOS). ARKTOS performs fully automated analysis of synthetic aperture radar (SAR) sea ice images by mimicking...

Soh, L. K.; Tsatsoulis, Costas; Gineris, D.; Bertoia, C.

2004-01-01T23:59:59.000Z

174

Contact the Center: cisbr@jhu.edu | 443-287-4581 SOP for Collection of Oxytocin  

E-Print Network (OSTI)

of collection using liquid nitrogen/or dry ice ethanol bath (preferred); if not available freeze to -20C or -80C

Niebur, Ernst

175

It's Elemental - The Element Nitrogen  

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

Carbon Carbon Previous Element (Carbon) The Periodic Table of Elements Next Element (Oxygen) Oxygen The Element Nitrogen [Click for Isotope Data] 7 N Nitrogen 14.0067 Atomic Number: 7 Atomic Weight: 14.0067 Melting Point: 63.15 K (-210.00°C or -346.00°F) Boiling Point: 77.36 K (-195.79°C or -320.44°F) Density: 0.0012506 grams per cubic centimeter Phase at Room Temperature: Gas Element Classification: Non-metal Period Number: 2 Group Number: 15 Group Name: Pnictogen What's in a name? From the Greek words nitron and genes, which together mean "saltpetre forming." Say what? Nitrogen is pronounced as NYE-treh-gen. History and Uses: Nitrogen was discovered by the Scottish physician Daniel Rutherford in 1772. It is the fifth most abundant element in the universe and makes up

176

Nitrogen removal from natural gas  

SciTech Connect

According to a 1991 Energy Information Administration estimate, U.S. reserves of natural gas are about 165 trillion cubic feet (TCF). To meet the long-term demand for natural gas, new gas fields from these reserves will have to be developed. Gas Research Institute studies reveal that 14% (or about 19 TCF) of known reserves in the United States are subquality due to high nitrogen content. Nitrogen-contaminated natural gas has a low Btu value and must be upgraded by removing the nitrogen. In response to the problem, the Department of Energy is seeking innovative, efficient nitrogen-removal methods. Membrane processes have been considered for natural gas denitrogenation. The challenge, not yet overcome, is to develop membranes with the required nitrogen/methane separation characteristics. Our calculations show that a methane-permeable membrane with a methane/nitrogen selectivity of 4 to 6 would make denitrogenation by a membrane process viable. The objective of Phase I of this project was to show that membranes with this target selectivity can be developed, and that the economics of the process based on these membranes would be competitive. Gas permeation measurements with membranes prepared from two rubbery polymers and a superglassy polymer showed that two of these materials had the target selectivity of 4 to 6 when operated at temperatures below - 20{degrees}C. An economic analysis showed that a process based on these membranes is competitive with other technologies for small streams containing less than 10% nitrogen. Hybrid designs combining membranes with other technologies are suitable for high-flow, higher-nitrogen-content streams.

NONE

1997-04-01T23:59:59.000Z

177

Sum-frequency spectroscopic studies: I. Surface melting of ice, II. Surface alignment of polymers  

SciTech Connect

Surface vibrational spectroscopy via infrared-visible sum-frequency generation (SFG) has been established as a useful tool to study the structures of different kinds of surfaces and interfaces. This technique was used to study the (0001) face of hexagonal ice (Ih). SFG spectra in the O-H stretch frequency range were obtained at various sample temperatures. For the vapor(air)/ice interface, the degree of orientational order of the dangling OH bonds at the surface was measured as a function of temperature. Disordering sets in around 200 K and increases dramatically with temperature, which is strong evidence of surface melting of ice. For the other ice interfaces (silica/OTS/ice and silica/ice), a similar temperature dependence of the hydrogen bonded OH stretch peak was observed; the free OH stretch mode, however, appears to be different from that of the vapor (air)/ice interface due to interactions at the interfaces. The technique was also used to measure the orientational distributions of the polymer chains on a rubbed polyvinyl alcohol surface. Results show that the polymer chains at the surface appear to be well aligned by rubbing, and the adsorbed liquid crystal molecules are aligned, in turn, by the surface polymer chains. A strong correlation exists between the orientational distributions of the polymer chains and the liquid crystal molecules, indicating that the surface-induced bulk alignment of a liquid crystal film by rubbed polymer surfaces is via an orientational epitaxy-like mechanism. This thesis also contains studies on some related issues that are crucial to the above applications. An experiment was designed to measure SFG spectra in both reflection and transmission. The result confirms that SFG in reflection is generally dominated by the surface contribution. Another issue is the motional effect due to fast orientational motion of molecules at a surface or interface. Calculations show that the effect is significant if the molecular orientation varies over a broad range within the vibrational relaxation time. The stretch vibration of the free OH bonds at the vapor/water interface is used to illustrate the importance of the effect.

Wei, Xing

2000-12-21T23:59:59.000Z

178

Greenland Ice Sheet "Sliding" a Small Contributor to Future Sea...  

Office of Science (SC) Website

(ice2sea manuscript no. 121). ElmerIce simulations were performed using high-performance computing resources from Grand quipement National de Calcul Intensif - Centre...

179

Hail Ice Damage of Stringer-Stiffened Curved Composite Panels /  

E-Print Network (OSTI)

of projectile SHI. Thus, the ice produces a more large-areaproduce uneven pressure/forces being applied onto the ice

Le, Jacqueline Linh

2013-01-01T23:59:59.000Z

180

SciTech Connect: optimal initial conditions for coupling ice...  

Office of Scientific and Technical Information (OSTI)

Conference: optimal initial conditions for coupling ice sheet models to earth system models Citation Details In-Document Search Title: optimal initial conditions for coupling ice...

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Effects of ice cover on sediment resuspension and phosphorus ...  

Science Journals Connector (OSTI)

Since ice coverage increased shear resistance, climate-driven absence or shortening of ice-cover would reduce the period for settling of particles and their...

182

ARM - PI Product - Large Scale Ice Water Path and 3-D Ice Water Content  

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

ProductsLarge Scale Ice Water Path and 3-D Ice Water ProductsLarge Scale Ice Water Path and 3-D Ice Water Content Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Large Scale Ice Water Path and 3-D Ice Water Content Site(s) SGP TWP General Description Cloud ice water concentration is one of the most important, yet poorly observed, cloud properties. Developing physical parameterizations used in general circulation models through single-column modeling is one of the key foci of the ARM program. In addition to the vertical profiles of temperature, water vapor and condensed water at the model grids, large-scale horizontal advective tendencies of these variables are also required as forcing terms in the single-column models. Observed horizontal advection of condensed water has not been available because the

183

Zevenhoven & Kilpinen NITROGEN 13.4.2002 4-1 Chapter 4 Nitrogen  

E-Print Network (OSTI)

of the nitric oxide is oxidized to nitrogen dioxide, so the environmental effects of emissions of bothZevenhoven & Kilpinen NITROGEN 13.4.2002 4-1 Chapter 4 Nitrogen 4.1 Introduction Probably the most damaging of the hazardous nitrogen compounds formed during combustion are nitric oxide (NO) and nitrogen

Laughlin, Robert B.

184

6, 20592090, 2006 Ice nucleation in  

E-Print Network (OSTI)

intermediate solubility and melting temperatures) nucleated ice at the same temperature as aqueous sulfuric Discussions Ice nucleation in sulfuric acid/organic aerosols: implications for cirrus cloud formation M. R. Beaver1 , M. J. Elrod2 , R. M. Garland1 , and M. A. Tolbert1 1 Department of Chemistry and Biochemistry

Boyer, Edmond

185

Ocean and Sea Ice SAF Technical Note  

E-Print Network (OSTI)

Ocean and Sea Ice SAF Technical Note SAF/OSI/CDOP/KNMI/TEC/RP/147 Validation of ASCAT 12.5-km winds The Ocean and Sea Ice Satellite Application Facility (OSI SAF) delivers an operational level 2 wind product produces a level 1 product with 12.5-km WVC spacing that has a resolution of approximately 25 km. Since

Stoffelen, Ad

186

Ocean and Sea Ice SAF Technical Note  

E-Print Network (OSTI)

Ocean and Sea Ice SAF Technical Note SAF/OSI/CDOP2/KNMI/TEC/RP/194 Quality Control of Ku. The OSCAT level 2a data are available in near-real time and OWDP is used at KNMI to produce the Ocean and Sea Ice (OSI) SAF wind product which is made available to users. A beta version of OWDP is also

Stoffelen, Ad

187

Largest Ice-Bank Promotes Load Management  

E-Print Network (OSTI)

California's largest ice-bank storage system is an example of how thermal storage can be applied to both new and existing buildings. At the Union Oil Company in Brea, California, one massive ice-storage system satisfies the air conditioning needs...

Brarmann, G. L.

1983-01-01T23:59:59.000Z

188

Stability of ice-sheet grounding lines  

Science Journals Connector (OSTI)

...81 73 Stability of ice-sheet grounding lines Richard F. Katz 1 * M. Grae Worster 2...ice sheets are sensitive to grounding-line position and variation, characteristics...models. We present a theory for grounding-line dynamics in three spatial dimensions and...

2010-01-01T23:59:59.000Z

189

E-Print Network 3.0 - anti-icing Sample Search Results  

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

Used Unserviceable No de-ice, anti-ice or related 73 - - - Wing tail... De-icing boots - 10 3 0 Wing tail bleed-air anti-ice - 3 0 0 Wing tail electric anti-ice - 2 0...

190

The microstructure of polar ice. Part I: Highlights from ice core research  

Science Journals Connector (OSTI)

Abstract Polar ice sheets play a fundamental role in Earth's climate system, by interacting actively and passively with the environment. Active interactions include the creeping flow of ice and its effects on polar geomorphology, global sea level, ocean and atmospheric circulation, and so on. Passive interactions are mainly established by the formation of climate records within the ice, in form of air bubbles, dust particles, salt microinclusions and other derivatives of airborne impurities buried by recurrent snowfalls. For a half-century scientists have been drilling deep ice cores in Antarctica and Greenland for studying such records, which can go back to around a million years. Experience shows, however, that the ice-sheet flow generally disrupts the stratigraphy of the bottom part of deep ice cores, destroying the integrity of the oldest records. For all these reasons glaciologists have been studying the microstructure of polar ice cores for decades, in order to understand the genesis and fate of ice-core climate records, as well as to learn more about the physical properties of polar ice, aiming at better climate-record interpretations and ever more precise models of ice-sheet dynamics. In this Part I we review the main difficulties and advances in deep ice core drilling in Antarctica and Greenland, together with the major contributions of deep ice coring to the research on natural ice microstructures. In particular, we discuss in detail the microstructural findings from Camp Century, Byrd, Dye 3, GRIP, GISP2, NorthGRIP, Vostok, Dome C, EDML, and Dome Fuji, besides commenting also on the earlier results of some pioneering ventures, like the Jungfraujoch Expedition and the NorwegianBritishSwedish Antarctic Expedition, among others. In the companion Part II of this work (Faria etal., 2014), the review proceeds with a survey of the state-of-the-art understanding of natural ice microstructures and some exciting prospects in this field of research.

Srgio H. Faria; Ilka Weikusat; Nobuhiko Azuma

2014-01-01T23:59:59.000Z

191

ICE CORE RECORDS | Greenland Stable Isotopes  

Science Journals Connector (OSTI)

Abstract Greenland ice cores contain a wealth of information on past climatic conditions throughout the Northern Hemisphere. A historical perspective on the climatic interpretation of stable isotopes in water and ice is presented in the introduction, while the remainder of the article is devoted to the current interpretation of stable isotope data from Greenland ice cores. The progress in our understanding of stable isotope signals, on timescales from seasons to glacial cycles, is discussed and evaluated through numerous examples from Greenland ice cores. Stable isotope profiles from the Camp Century, Dye-3, GISP2, GRIP, NGRIP, and Renland deep ice cores are emphasized, as they all provide climatic information dating back into the Eemian period.

B.M. Vinther; S.J. Johnsen

2013-01-01T23:59:59.000Z

192

Liquid electrode  

DOE Patents (OSTI)

A dropping electrolyte electrode is described for use in electrochemical analysis of non-polar sample solutions, such as benzene or cyclohexane. The liquid electrode, preferably an aqueous salt solution immiscible in the sample solution, is introduced into the solution in dropwise fashion from a capillary. The electrolyte is introduced at a known rate, thus, the droplets each have the same volume and surface area. The electrode is used in making standard electrochemical measurements in order to determine properties of non-polar sample solutions. 2 figures.

Ekechukwu, A.A.

1994-07-05T23:59:59.000Z

193

Energy Cost Calculator for Commercial Ice Machines | Department of Energy  

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

Ice Machines Ice Machines Energy Cost Calculator for Commercial Ice Machines October 8, 2013 - 2:25pm Addthis Vary capacity size, energy cost, hours of operation, and /or efficiency level. INPUT SECTION Input the following data (if any parameter is missing, calculator will set to default value). Defaults Type of Ice Cube Machine Ice Making Head Self-Contained Remote Condensing Unit Ice Making Head Type of Condenser Air Cooled Water Cooled Air Cooled Ice Harvest Rate (lbs. ice per 24 hrs.) lbs. per 24 hrs. 500 lbs. per 24 hrs. Energy Consumption (per 100 lbs. of ice) kWh 5.5 kWh Quantity of ice machines to be purchased 1 Energy Cost $/kWh 0.06 $/kWh Annual Hours of Operation hrs. 3000 hrs. Calculate Reset OUTPUT SECTION Performance per Ice Cube Machine Your

194

Retrieval of Cloud Phase and Ice Crystal Habit from Satellite Data  

SciTech Connect

Knowledge of cloud phase (liquid or ice) and crystal habit are of fundamental importance to both remote sensing and climate simulations. Using water droplets instead of ice crystals in retrieving cloud properties from satellite data can lead to errors in the retrieval of cloud height, optical thickness, and microphysical properties. Satellite retrievals of microphysical properties are also influenced by the crystal habit used in the retrieval, either indirectly via an assumed phase function or directly via assumed profiles of ice crystal habits. Realistic treatment of ice cloud radiative and microphysical properties, which depend on crystal habit, is important in climate simulations, especially in tropical anvil regions. In this work, we present a method for retrieving cloud phase and the dominant ice crystal habit from radiances measured by the Multi-angle Imaging Spectro-Radiometer (MISR) and the Moderate Resolution Imaging Spectroradiometer (MODIS). The shape of an atmospheric particle affects the scattering of light such that water droplets and ice crystals of various habits have somewhat different phase functions. Consequently the radiances measured by the MISR instrument, which observes light scattered from the same cloud at nine different viewing angles, are functions of the crystal shape. In principle, the measured angular radiance pattern can be used to infer the crystal shape. In this work, we present initial results from a cloud phase and ice crystal habit retrieval based on combining the MISR multi-angular visible wavelength measurements with MODIS shortwave infrared measurements. The nine angular measurements provided by the MISR cameras allow a wide range of scattering angles to be viewed in a single scene, which provides sensitivity to particle habit. The presence of the MODIS instrument on the same satellite allows additional information on particle size to be incorporated into the retrievals. Results of the retrieval method are presented for several case studies over the continental United States. Cloud phase can be determined from the MISR angular measurements alone, due to the large differences in the phase functions of water droplets and ice crystals. By combining the MISR and MODIS measurements, crystal habit, effective radius, and optical depth can be inferred simultaneously for ice clouds. Comparisons with ground-based retrieval methods and semi-coincident in situ data illustrate that the retrieved crystal habits and sizes are reasonable.

McFarlane, Sally A.; Marchand, Roger T.; Ackerman, Thomas P.

2004-07-19T23:59:59.000Z

195

Liquid Phases Used in Packed Gas Chromatographic Columns. Part II. Use of Liquid Phases Which Are Not Polysiloxanes  

Science Journals Connector (OSTI)

......as well as trace water, be removed from the carrier gas by using suitable...in the carrier gas lines. There is...bottles out with nitrogen and seal the filled...liquid phases in gas chromatography...Superoxes show low solubility in the common organic......

Joel A. Yancey

1985-08-01T23:59:59.000Z

196

Guidance Document Cryogenic Liquids  

E-Print Network (OSTI)

Guidance Document Cryogenic Liquids [This is a brief and general summary. Read the full MSDS for more details before handling.] Introduction: All cryogenic liquids are gases at normal temperature liquefies them. Cryogenic liquids are kept in the liquid state at very low temperatures. Cryogenic liquids

197

GREAT LAKES ICE COVER RaymondA. Asset'  

E-Print Network (OSTI)

hydropower production and cooling water intakes, and damaging shore structures. Ice cover also impactsChapter 6 GREAT LAKES ICE COVER RaymondA. Asset' ABSTRACT: Theformation of ice on the Lallrentian (~rthe Great Lakes anel local weather and climate. The (I1Inllal seasonal and ~'Patialprogression of ice

198

SNOW ON ANTARCTIC SEA ICE Robert A. Massom,1  

E-Print Network (OSTI)

SNOW ON ANTARCTIC SEA ICE Robert A. Massom,1 Hajo Eicken,2 Christian Haas,3 Martin O. Jeffries,2 on Antarctic sea ice plays a complex and highly variable role in air-sea-ice interaction pro- cesses of thicker snow and thin- ner ice in the Antarctic relative to the Arctic (e.g., the importance of flooding

Warren, Stephen

199

Nitrogen Oxides Emission Control Options  

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

Nitrogen Nitrogen Oxides Emission Control Options for Coal-Fired Electric Utility Boilers Ravi K. Srivastava and Robert E. Hall U.S. Environmental Protection Agency, National Risk Management Research Laboratory, Air Pollution Prevention and Control Division, Research Triangle Park, NC Sikander Khan and Kevin Culligan U.S. Environmental Protection Agency, Office of Air and Radiation, Clean Air Markets Division, Washington, DC Bruce W. Lani U.S. Department of Energy, National Energy Technology Laboratory, Environmental Projects Division, Pittsburgh, PA ABSTRACT Recent regulations have required reductions in emissions of nitrogen oxides (NO x ) from electric utility boilers. To comply with these regulatory requirements, it is increas- ingly important to implement state-of-the-art NO x con- trol technologies on coal-fired utility boilers. This paper reviews NO x control

200

EFFECT OF NITROGEN OXIDE PRETREATMENTS ON ENZYMATIC HYDROLYSIS OF CELLULOSE  

E-Print Network (OSTI)

oxygen react to give nitrogen dioxide, which rapidly reactsis simultaneous, the nitrogen dioxide formed reacts withaccomplished by absorbing nitrogen dioxide in water, usually

Borrevik, R.K.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

A liquid film motor  

Science Journals Connector (OSTI)

It is well known that electro-hydrodynamical effects in freely suspended liquid films can force liquids to flow. Here, we report a purely electrically driven rotation in water and some other liquid suspended film...

A. Amjadi; R. Shirsavar; N. Hamedani Radja

2009-05-01T23:59:59.000Z

202

Optimization of a Sea Ice Model Using Basinwide Observations of Arctic Sea Ice Thickness, Extent, and Velocity  

E-Print Network (OSTI)

datasets. 1. Introduction Sea ice is important to the climate system because it insulates the cold polarOptimization of a Sea Ice Model Using Basinwide Observations of Arctic Sea Ice Thickness, Extent 2004, in final form 27 June 2005) ABSTRACT A stand-alone sea ice model is tuned and validated using

Feltham, Daniel

203

Mass-density and Phonon-frequency Relaxation Dynamics of Water and Ice at Cooling  

E-Print Network (OSTI)

Coulomb repulsion between the bonding electron pair in the H-O covalent bond (denoted by "-") and the nonbonding electron pair of O (":") and the specific-heat disparity between the O:H and the H-O segments of the entire hydrogen bond (O:H-O) are shown to determine the O:H-O bond angle-length-stiffness relaxation dynamics and the density anomalies of water and ice. The bonding part with relatively lower specific-heat is more easily activated by cooling, which serves as the "master" and contracts, while forcing the "slave" with higher specific-heat to elongate (via Coulomb repulsion) by different amounts. In the liquid and solid phases, the O:H van der Waals bond serves as the master and becomes significantly shorter and stiffer while the H-O bond becomes slightly longer and softer (phonon frequency is a measure of bond stiffness), resulting in an O:H-O cooling contraction and the seemingly "regular" process of cooling densification. In the water-ice transition phase, the master and the slave swap roles, thus resulting in an O:H-O elongation and volume expansion during freezing. In ice, the O--O distance is longer than it is in water, resulting in a lower density, so that ice floats.

Chang Q. Sun

2013-04-02T23:59:59.000Z

204

A study of the ice-water interface using the TIP4P/2005 water model  

E-Print Network (OSTI)

In this work we study the ice-water interface under coexistence conditions by means of molecular simulations using the TIP4P/2005 water model. Following the methodology proposed by Hoyt and co-workers [J. J. Hoyt, M. Asta and A. Karma, Phys. Rev. Lett., 86, 5530, (2001)] we measure the interfacial free energy of ice with liquid water by analysing the spectrum of capillary fluctuations of the interface. We get an orientationally averaged interfacial free energy of 27(2) mN/m, in good agreement with a recent estimate obtained from simulation data of the size of critical clusters [E. Sanz, C. Vega, J. R. Espinosa, R. Caballero-Bernal, J. L. F. Abascal and C. Valeriani, JACS, 135, 15008, (2013)]. We also estimate the interfacial free energy of different planes and obtain 27(2), 28(2)and 28(2) mN/m for the basal, the primary prismatic and the secondary prismatic planes respectively. Finally, we inspect the structure of the interface and find that its thickness is of approximately 4-5 molecular diameters. Moreover, we find that when the basal plane is exposed to the fluid the interface alternates regions of cubic ice with regions of hexagonal ice.

Jorge Benet; Luis G. MacDowell; Eduardo Sanz

2014-10-01T23:59:59.000Z

205

Energy efficient control of HVAC systems with ice cold thermal energy storage  

Science Journals Connector (OSTI)

Abstract In heating, ventilation and air conditioning (HVAC) systems of medium/high cooling capacity, energy demands can be matched with the help of thermal energy storage (TES) systems. If properly designed, TES systems can reduce energy costs and consumption, equipment size and pollutant emissions. In order to design efficient control strategies for TES systems, we present a model-based approach with the aim of increasing the performance of HVAC systems with ice cold thermal energy storage (CTES). A simulation environment based on Matlab/Simulink is developed, where thermal behaviour of the plant is analysed by a lumped formulation of the conservation equations. In particular, the ice CTES is modelled as a hybrid system, where the water phase transitions (solidmeltingliquid and liquidfreezingsolid) are described by combining continuous and discrete dynamics, thus considering both latent and sensible heat. Standard control strategies are compared with a non-linear model predictive control (NLMPC) approach. In the simulation examples model predictive control proves to be the best control solution for the efficient management of ice CTES systems.

Alessandro Beghi; Luca Cecchinato; Mirco Rampazzo; Francesco Simmini

2014-01-01T23:59:59.000Z

206

Nailing Down Ice in a Cloud Model  

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

Nailing Down Ice in a Cloud Model Nailing Down Ice in a Cloud Model For original submission and image(s), see ARM Research Highlights http://www.arm.gov/science/highlights/ Research Highlight A research team led by scientists at Pacific Northwest National Laboratory identified specific strengths and weaknesses of four different ice cloud retrieval algorithms. Their comparisons tested the ability of the algorithms to obtain cloud properties from radar and lidar observational measurements. The team noted the sometimes large variances in heating/cooling measurements compared to the observed data. Identifying specific weaknesses will help scientists improve our understanding of cloud properties in the atmosphere, which can be used for climate model development and evaluation. "Measuring the effective size and mass of ice crystals impacts our understanding

207

Neutron Diffraction of Ice in Hydrogels  

Science Journals Connector (OSTI)

Neutron Diffraction of Ice in Hydrogels ... (14, 15) Neutrons are also especially suited for studying D2O water in hydrogels because hydrogen atoms (H) on the polymer chains are not detectable. ...

Yurina Sekine; Tomoko Ikeda-Fukazawa; Mamoru Aizawa; Riki Kobayashi; Songxue Chi; Jaime A. Fernandez-Baca; Hiroki Yamauchi; Hiroshi Fukazawa

2014-08-26T23:59:59.000Z

208

A New Greenland Deep Ice Core  

Science Journals Connector (OSTI)

...isotopic profile with that from camp Century and with a deep-sea foraminifera...deep-sea cores. The redated Camp Century record suggests a dramatic termination...CENTURIES OF CLIMATIC RECORD FROM CAMP CENTURY ON GREENLAND ICE SHEET, SCIENCE...

W. Dansgaard; H. B. Clausen; N. Gundestrup; C. U. Hammer; S. F. Johnsen; P. M. Kristinsdottir; N. Reeh

1982-12-24T23:59:59.000Z

209

Photoadaptation of high Arctic ice algae  

Science Journals Connector (OSTI)

... of the surface snow cover allowed considerable control over the light conditions of the epontic algae. Algal material was collected from the bottom few centimetres of ice with a SIPRE ... growth in their respective light environments.

Glenn F. Cota

1985-05-16T23:59:59.000Z

210

Weakening of ice by magnesium perchlorate hydrate  

E-Print Network (OSTI)

I show that perchlorate hydrates, which have been indirectly detected at high Martian circumpolar latitudes by the Phoenix Mars Lander, have a dramatic effect upon the rheological behavior of polycrystalline water ice under ...

Lenferink, Hendrik J., 1985-

2012-01-01T23:59:59.000Z

211

Quantifying fit in ice hockey skate boots.  

E-Print Network (OSTI)

??Purpose. This study quantified fit of ice hockey skate boots by measuring the pressure (MP) at the foot/ankle-to-boot interface using three skate sizes. The relationship (more)

Gheorghiu, Cristian R.

2005-01-01T23:59:59.000Z

212

Scattering Properties of Oriented Hexagonal Ice Crystals  

E-Print Network (OSTI)

To interpret the data from spaceborn lidar measurements, one must have a basic understanding of the backscattering of oriented ice particles. The conventional raytracing method is not applicable to the scattering of light by oriented particles...

Zhang, Feng

2010-01-14T23:59:59.000Z

213

Hydrogen Material Compatibility for Hydrogen ICE | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. pm04smith.pdf More Documents & Publications Hydrogen Materials Compatibility for the H-ICE...

214

Observations of the Askaryan Effect in Ice  

SciTech Connect

We report on the first observations of the Askaryan effect in ice: coherent impulsive radio Cherenkov radiation from the charge asymmetry in an electromagnetic (EM) shower. Such radiation has been observed in silica sand and rock salt, but this is the first direct observation from an EM shower in ice. These measurements are important since the majority of experiments to date that rely on the effect for ultra-high energy neutrino detection are being performed using ice as the target medium. As part of the complete validation process for the Antarctic Impulsive Transient Antenna (ANITA) experiment, we performed an experiment at the Stanford Linear Accelerator Center (SLAC) in June 2006 using a 7.5 metric ton ice target, yielding results fully consistent with theoretical expectations.

Gorham, P.W.

2007-01-16T23:59:59.000Z

215

Microsoft Word - IceMountainFinal.docx  

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

Mason West Virginia's Ice Mountain: Where Science Meets Magic On August 6, 1918, the thermometer hit 109 degrees in Hampshire County, West Virginia. It's easy to believe that the...

216

Stanford Nitrogen Group | Department of Energy  

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

Stanford Nitrogen Group Stanford Nitrogen Group National Clean Energy Business Plan Competition Stanford Nitrogen Group Stanford University The Stanford Nitrogen Group developed a new wastewater treatment process for the removal and recovery of energy from waste nitrogen (i.e. ammonia). This process improves the efficiency and lowers the cost of nitrogen treatment. The process is termed the Coupled Aerobic-anoxic Nitrous Decomposition Operation (CANDO) and consists of 2 principal steps: biological conversion of ammonia to N2O gas, and combustion of a fuel (i.e. biogas) with N2O to recover energy. It's the first wastewater treatment process to recover energy from nitrogen. Wastewater treatment facilities experience dual financial pressures - rising energy costs and meeting increasingly stringent nitrogen discharge

217

Stanford Nitrogen Group | Department of Energy  

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

Stanford Nitrogen Group Stanford Nitrogen Group National Clean Energy Business Plan Competition Stanford Nitrogen Group Stanford University The Stanford Nitrogen Group developed a new wastewater treatment process for the removal and recovery of energy from waste nitrogen (i.e. ammonia). This process improves the efficiency and lowers the cost of nitrogen treatment. The process is termed the Coupled Aerobic-anoxic Nitrous Decomposition Operation (CANDO) and consists of 2 principal steps: biological conversion of ammonia to N2O gas, and combustion of a fuel (i.e. biogas) with N2O to recover energy. It's the first wastewater treatment process to recover energy from nitrogen. Wastewater treatment facilities experience dual financial pressures - rising energy costs and meeting increasingly stringent nitrogen discharge

218

IN THIS ISSUE Nitrogen on Cotton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  

E-Print Network (OSTI)

AGRONOMY NOTES July 2005 IN THIS ISSUE COTTON Nitrogen on Cotton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Protecting Cotton Squares and Blooms / University of Florida / Larry Arrington, Interim Dean. #12;2 Nitrogen on Cotton Now is the time to apply N

Watson, Craig A.

219

Regelation: why does ice melt under pressure?  

E-Print Network (OSTI)

Unlike other unusual materials whose bonds contract under compression, the O:H nonbond undergoes contraction and the H-O bond elongation towards O:H and H-O length symmetry in water and ice. The energy drop of the H-O bond dictates the melting point Tm depression of ice. Once the pressure is relieved, the O:H-O bond fully recovers its initial state, resulting in Regelation.

Sun, Chang Q

2015-01-01T23:59:59.000Z

220

Simulating mixed-phase Arctic stratus clouds: sensitivity to ice initiation mechanisms  

SciTech Connect

The importance of Arctic mixed-phase clouds on radiation and the Arctic climate is well known. However, the development of mixed-phase cloud parameterization for use in large scale models is limited by lack of both related observations and numerical studies using multidimensional models with advanced microphysics that provide the basis for understanding the relative importance of different microphysical processes that take place in mixed-phase clouds. To improve the representation of mixed-phase cloud processes in the GISS GCM we use the GISS single-column model coupled to a bin resolved microphysics (BRM) scheme that was specially designed to simulate mixed-phase clouds and aerosol-cloud interactions. Using this model with the microphysical measurements obtained from the DOE ARM Mixed-Phase Arctic Cloud Experiment (MPACE) campaign in October 2004 at the North Slope of Alaska, we investigate the effect of ice initiation processes and Bergeron-Findeisen process (BFP) on glaciation time and longevity of single-layer stratiform mixed-phase clouds. We focus on observations taken during 9th-10th October, which indicated the presence of a single-layer mixed-phase clouds. We performed several sets of 12-h simulations to examine model sensitivity to different ice initiation mechanisms and evaluate model output (hydrometeors concentrations, contents, effective radii, precipitation fluxes, and radar reflectivity) against measurements from the MPACE Intensive Observing Period. Overall, the model qualitatively simulates ice crystal concentration and hydrometeors content, but it fails to predict quantitatively the effective radii of ice particles and their vertical profiles. In particular, the ice effective radii are overestimated by at least 50%. However, using the same definition as used for observations, the effective radii simulated and that observed were more comparable. We find that for the single-layer stratiform mixed-phase clouds simulated, process of ice phase initiation due to freezing of supercooled water in both saturated and undersaturated (w.r.t. water) environments is as important as primary ice crystal origination from water vapor. We also find that the BFP is a process mainly responsible for the rates of glaciation of simulated clouds. These glaciation rates cannot be adequately represented by a water-ice saturation adjustment scheme that only depends on temperature and liquid and solid hydrometeors contents as is widely used in bulk microphysics schemes and are better represented by processes that also account for supersaturation changes as the hydrometeors grow.

Sednev, Igor; Sednev, I.; Menon, S.; McFarquhar, G.

2008-02-18T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Simulating mixed-phase Arctic stratus clouds: Sensitivity to ice initiationmechanisms  

SciTech Connect

The importance of Arctic mixed-phase clouds on radiation and the Arctic climate is well known. However, the development of mixed-phase cloud parameterization for use in large scale models is limited by lack of both related observations and numerical studies using multidimensional models with advanced microphysics that provide the basis for understanding the relative importance of different microphysical processes that take place in mixed-phase clouds. To improve the representation of mixed-phase cloud processes in the GISS GCM we use the GISS single-column model coupled to a bin resolved microphysics (BRM) scheme that was specially designed to simulate mixed-phase clouds and aerosol-cloud interactions. Using this model with the microphysical measurements obtained from the DOE ARM Mixed-Phase Arctic Cloud Experiment (MPACE) campaign in October 2004 at the North Slope of Alaska, we investigate the effect of ice initiation processes and Bergeron-Findeisen process (BFP) on glaciation time and longevity of single-layer stratiform mixed-phase clouds. We focus on observations taken during October 9th-10th, which indicated the presence of a single-layer mixed-phase clouds. We performed several sets of 12-hour simulations to examine model sensitivity to different ice initiation mechanisms and evaluate model output (hydrometeors concentrations, contents, effective radii, precipitation fluxes, and radar reflectivity) against measurements from the MPACE Intensive Observing Period. Overall, the model qualitatively simulates ice crystal concentration and hydrometeors content, but it fails to predict quantitatively the effective radii of ice particles and their vertical profiles. In particular, the ice effective radii are overestimated by at least 50%. However, using the same definition as used for observations, the effective radii simulated and that observed were more comparable. We find that for the single-layer stratiform mixed-phase clouds simulated, process of ice phase initiation due to freezing of supercooled water in both saturated and subsaturated (w.r.t. water) environments is as important as primary ice crystal origination from water vapor. We also find that the BFP is a process mainly responsible for the rates of glaciation of simulated clouds. These glaciation rates cannot be adequately represented by a water-ice saturation adjustment scheme that only depends on temperature and liquid and solid hydrometeors contents as is widely used in bulk microphysics schemes and are better represented by processes that also account for supersaturation changes as the hydrometeors grow.

Sednev, I.; Menon, S.; McFarquhar, G.

2009-04-10T23:59:59.000Z

222

Numerical simulation of large amplitude liquid sloshing in a rigid rectangular tank  

E-Print Network (OSTI)

NUMERICAL SIMULATION OF LARGE AMPLITUDE LIQUID SLOSHING IN A RIGID RECTANGULAR TANK A Thesis by THOMAS JACKSON BRIDGES Submitted to the Graduate College of Texas A8M University in partial fulfillment of the requirement for the degree... of MASTER OF SCIE'ICE December 1981 Major Subject: Ocean Engineering NUMERICAL SIMULATION OF LARGE AMPLITUDE LIQUID SLOSHING IN A RIGID RECTANGULAR TANK A Thesis by THOMAS JACKSON BRIDGES Approved as to sty1e and content by: (Chairman of Commit ee...

Bridges, Thomas J.

1981-01-01T23:59:59.000Z

223

COMBUSTION SOURCES OF UNREGULATED GAS PHASE NITROGENEOUS SPECIES  

E-Print Network (OSTI)

OXIDES OF NITROGEN Nitrogen Dioxide (N0 2) Nitrous Oxide (NFigure 7. Emissions of nitrogen dioxide from gas turbines (by AiResearch(8)) . Nitrogen dioxide emissions from a

Matthews, Ronald D.

2013-01-01T23:59:59.000Z

224

Impacts of Atmospheric Anthropogenic Nitrogen on the  

E-Print Network (OSTI)

anthropogenic carbon dioxide may result from this atmospheric nitrogen fertilization, leading to a decreaseImpacts of Atmospheric Anthropogenic Nitrogen on the Open Ocean R. A. Duce,1 * J. LaRoche,2 K quantities of atmospheric anthropogenic fixed nitrogen entering the open ocean could account for up to about

Ward, Bess

225

A Compact, Backscattering Deplolarization Cloud Spectrometer for Ice and Water Discrimination  

SciTech Connect

This project was to develop a compact optical particle spectrometer, small enough for operation on UAVS, that measures the optical diameter of cloud hydrometeors and differentiates their water phase (liquid or solid). To reach this goal, a work plan was laid out that would complete three objectives: 1) Evaluation of designs for an optical particle spectrometer that measures the component of light backscattered at two polarization angles. 2) Testing of selected designs on an optical bench. 3) Construction and preliminary testing of a prototype instrument based on the selected, optimum design. A protoype instrument was developed and tested in an icing wind tunnel where the results showed good measurement of cloud droplets and ice particles.

Thomson, David

2014-05-15T23:59:59.000Z

226

Is there evidence for sterile neutrinos in IceCube data?  

Science Journals Connector (OSTI)

Data from the Liquid Scintillator Neutrino Detector and Mini-Booster Neutrino experiments, and the revised expectations of the antineutrino flux from nuclear reactors suggest the existence of eV-mass sterile neutrinos. The 3+2 and 1+3+1 scenarios accommodate all relevant short-baseline neutrino data except for the low-energy Mini-Booster Neutrino Experiment anomaly. We analyze the angular distribution of upward going atmospheric neutrino events in the IceCube-40 data set for evidence of sterile neutrinos within these scenarios. Depending on how systematic uncertainties are handled, we find strong evidence for, or weak evidence against sterile neutrinos. We show that future IceCube data will definitively settle the issue.

V. Barger; Y. Gao; D. Marfatia

2012-01-18T23:59:59.000Z

227

Safetygram #9- Liquid Hydrogen  

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

Hydrogen is colorless as a liquid. Its vapors are colorless, odorless, tasteless, and highly flammable.

228

Spin-One Ising Model for Ice VIIPlastic Ice Phase Transitions  

Science Journals Connector (OSTI)

We propose a spin model compatible with ice VIIplastic ice phase transitions and critical phenomena discovered recently by computer simulations. The BlumeCapel spin-1 Ising model is extended in order to describe the entropic stabilization effect in the ...

Masakazu Matsumoto; Kazuhiro Himoto; Hideki Tanaka

2014-08-21T23:59:59.000Z

229

Nonequilibrium air clathrate hydrates in Antarctic ice: a paleopiezomdter for polar ice caps  

Science Journals Connector (OSTI)

...long as the ice thickness changes by only a few hundred meters. Examination of the deep ice cores from the Dye-3 and Camp Century sites in Greenland were made by the same microscopic thermal-needle method: at both these sites the onset of craigite...

H Craig; H Shoji; C C Langway; Jr

1993-01-01T23:59:59.000Z

230

ICED'09/Paper number (Contribution ID) 1 INTERNATIONAL CONFERENCE ON ENGINEERING DESIGN, ICED'09  

E-Print Network (OSTI)

ICED'09/Paper number (Contribution ID) 1 INTERNATIONAL CONFERENCE ON ENGINEERING DESIGN, ICED'09 24 - 27 AUGUST 2009, STANFORD UNIVERSITY, STANFORD, CA, USA CREATIVITY THEORIES AND SCIENTIFIC DISCOVERY: A STUDY OF C-K THEORY AND INFUSED DESIGN ABSTRACT Creativity is central to human activity

Shai, Offer

231

ICED'09/373 1 INTERNATIONAL CONFERENCE ON ENGINEERING DESIGN, ICED'09  

E-Print Network (OSTI)

ICED'09/373 1 INTERNATIONAL CONFERENCE ON ENGINEERING DESIGN, ICED'09 24 - 27 AUGUST 2009, STANFORD UNIVERSITY, STANFORD, CA, USA CREATIVITY THEORIES AND SCIENTIFIC DISCOVERY: A STUDY OF C-K THEORY AND INFUSED Creativity is central to human activity and is a powerful force in personal and organizational success

Reich, Yoram

232

Multisite Disordered Structure of Ice VII to 20 GPa  

Science Journals Connector (OSTI)

Neutron diffraction measurements on ice VII and ice VIII at pressures up to 20 GPa provide direct evidence of multisite disorder of both oxygen and deuterium atoms in D2O ice VII, and give the magnitudes of the site separations. An O-D distance and D--D angle closest to those found in ice VIII are obtained with oxygen sites displaced along ?111? directions. Such displacements imply an H-bond geometry significantly different from that found in ice VIII, and this may have implications for the centering transition to ice X.

R. J. Nelmes; J. S. Loveday; W. G. Marshall; G. Hamel; J. M. Besson; S. Klotz

1998-09-28T23:59:59.000Z

233

NITROGEN REMOVAL FROM NATURAL GAS  

SciTech Connect

The objective of this project was to develop a membrane process for the denitrogenation of natural gas. Large proven reserves in the Lower-48 states cannot be produced because of the presence of nitrogen. To exploit these reserves, cost-effective, simple technology able to reduce the nitrogen content of the gas to 4-5% is required. Technology applicable to treatment of small gas streams (below 10 MMscfd) is particularly needed. In this project membranes that selectively permeate methane and reject nitrogen in the gas were developed. Preliminary calculations show that a membrane with a methane/nitrogen selectivity of 3 to 5 is required to make the process economically viable. A number of polymer materials likely to have the required selectivities were evaluated as composite membranes. Polyacetylenes such as poly(1-trimethylsilyl-1-propyne) [PTMSP] and poly(4-methyl-2-pentyne) [PMP] had high selectivities and fluxes, but membranes prepared from these polymers were not stable, showing decreasing flux and selectivity during tests lasting only a few hours. Parel, a poly(propylene oxide allyl glycidyl ether) had a selectivity of 3 at ambient temperatures and 4 or more at temperatures of {minus}20 C. However, Parel is no longer commercially available, and we were unable to find an equivalent material in the time available. Therefore, most of our experimental work focused on silicone rubber membranes, which have a selectivity of 2.5 at ambient temperatures, increasing to 3-4 at low temperatures. Silicone rubber composite membranes were evaluated in bench-scale module tests and with commercial-scale, 4-inch-diameter modules in a small pilot plant. Over six days of continuous operation at a feed gas temperature of {minus}5 to {minus}10 C, the membrane maintained a methane/nitrogen selectivity of about 3.3. Based on the pilot plant performance data, an analysis of the economic potential of the process was prepared. We conclude that a stand-alone membrane process is the lowest-cost technology for small gas streams containing less than 10% nitrogen. The membrane process can recover more than 60-70% of the hydrocarbon content of the gas at a cost of $0.60-0.70/Mscfd. The capital cost of the process is about $100-200/Mscf. A number of small operators appear to be ready to use the technology if these costs can be demonstrated in the field. A second, and perhaps better, application of the technology is to combine the membrane process with a cryogenic process to treat large gas streams containing 10-20% nitrogen. The combination process achieves significant synergies. The membrane process performs a bulk separation of the gas, after which the cryogenic process treats the membrane residue (nitrogen-enriched) gas to recover more methane. Overall, hydrocarbon recoveries are greater than 95%. The capital cost of the combination process is lower than that of either process used alone and the processing costs are in the range $0.30-0.40/Mscf. This operating cost would be attractive to many gas producers. MTR is collaborating with a producer of cryogenic systems to further develop the combination process. A number of innovations in membrane process designs were made during the project; four U.S. patents covering various aspects of the technology were filed and issued.

K.A. Lokhandwala; M.B. Ringer; T.T. Su; Z. He; I. Pinnau; J.G. Wijmans; A. Morisato; K. Amo; A. DaCosta; R.W. Baker; R. Olsen; H. Hassani; T. Rathkamp

1999-12-31T23:59:59.000Z

234

A LIQUID XENON RADIOISOTOPE CAMERA  

E-Print Network (OSTI)

ice trap Copper catalyst Xenon tank Positive displacementballast tank XBL72I-2251 Fig. 4. Gas purifier: Xenon gas

Zaklad, Haim.; Derenzo, Stephen E.; Muller, Richard A.; Smadja, Gerard.; Smits, Robert G.; Alvarez, Luis W.

2008-01-01T23:59:59.000Z

235

Acoustic and seismic measurement of ice processes  

Science Journals Connector (OSTI)

As sea ice responds to environmental forcing it deforms leading to the storage of strain energy. When mechanical failure occurs most of this energy is dissipated through fracturing but a small portion radiates as seismic and acoustic waves. These waves provide useful signals for sensing the failure process in the ice. In a recent ice mechanics experiment conducted north of Prudhoe Bay (SIMI 94) a large number of ice failure events were observed using geophone and hydrophone arrays. Preliminary results are presented including a large?scale tensile fracture test and naturally occurring sounds near a closing lead. For the artificial fracture the acoustic signals allow determination of cracking rate fracture advance and crack propagation velocities. The overall crack propagation speed is estimated to be of order 50 m?s?1; maximum cracking activities occur prior to peak loading. In the second data set the naturally occurring stick?slip process was observed as two ice sheets moved against each other in a closing lead. A wide range of frequencies can occur simultaneously representing different components of the sliding and slipping mechanisms.

David M. Farmer; Yunbo Xie

1995-01-01T23:59:59.000Z

236

Hydrogenation reactions in interstellar CO ice analogues  

E-Print Network (OSTI)

Hydrogenation reactions of CO in inter- and circumstellar ices are regarded as an important starting point in the formation of more complex species. Previous laboratory measurements by two groups on the hydrogenation of CO ices resulted in controversial results on the formation rate of methanol. Our aim is to resolve this controversy by an independent investigation of the reaction scheme for a range of H-atom fluxes and different ice temperatures and thicknesses. Reaction rates are determined by using a state-of-the-art ultra high vacuum experimental setup to bombard an interstellar CO ice analog with room temperature H atoms. The reaction of CO + H into H2CO and subsequently CH3OH is monitored by a Fourier transform infrared spectrometer in a reflection absorption mode. In addition, after each completed measurement a temperature programmed desorption experiment is performed to identify the produced species. Different H-atom fluxes, morphologies, and ice thicknesses are tested. The formation of both formaldeh...

Fuchs, G W; Ioppolo, S; Romanzin, C; Bisschop, S E; Andersson, S; Van Dishoeck, E F; Linnartz, H

2009-01-01T23:59:59.000Z

237

KINETICS OF OXIDATION OF AQUEOUS SULFUR(IV) BY NITROGEN DIOXIDE YIN-NAN LEE AND STEPHEN E. SCHWARTZ  

E-Print Network (OSTI)

, reagent gas solubilities, mass trans- fer, stoichiometry, and reaction rate were not systematicallyKINETICS OF OXIDATION OF AQUEOUS SULFUR(IV) BY NITROGEN DIOXIDE YIN-NAN LEE AND STEPHEN E. SCHWARTZ for the oxidation of these compounds and their incorpo- ration into atmospheric liquid water are not fully

Schwartz, Stephen E.

238

Gas Solubility Measurement and Modeling for the Nitrogen + Water System from 274.18 K to 363.02 K  

Science Journals Connector (OSTI)

Gas Solubility Measurement and Modeling for the Nitrogen + Water System from 274.18 K to 363.02 K ... (4)?Frolich, P. K.; Tauch, E. J.; Hogan, J. J.; Peer, A. A. Solubilities of Gases in Liquids at High Pressure. ...

Antonin Chapoy; Amir H. Mohammadi; Bahman Tohidi; Dominique Richon

2004-06-04T23:59:59.000Z

239

Intertemporal Computable Equilibrium System (ICES) | Open Energy  

Open Energy Info (EERE)

Intertemporal Computable Equilibrium System (ICES) Intertemporal Computable Equilibrium System (ICES) Jump to: navigation, search Tool Summary Name: Intertemporal Computable Equilibrium System (ICES) Agency/Company /Organization: Fondazione Eni Enrico Mattei Sector: Climate, Energy Complexity/Ease of Use: Moderate Website: www.feem.it/getpage.aspx?id=138&sez=Research&padre=18&sub=75&idsub=102 Related Tools Ex Ante Appraisal Carbon-Balance Tool (EX-ACT) General Equilibrium Model for Economy - Energy - Environment (GEM-E3) DNE21+ ... further results Find Another Tool FIND DEVELOPMENT IMPACTS ASSESSMENT TOOLS A recursive dynamic general equilibrium model developed with the main but not exclusive purpose of assessing the final welfare implication of climate change impacts on world economies. In addition to climate-change impact

240

Ice Towing Tank | Open Energy Information  

Open Energy Info (EERE)

Ice Towing Tank Ice Towing Tank Jump to: navigation, search Basic Specifications Facility Name Ice Towing Tank Overseeing Organization University of Iowa Hydrodynamic Testing Facility Type Tow Tank Length(m) 21.2 Beam(m) 5.0 Depth(m) 1.3 Cost(per day) Contact POC Special Physical Features Specialized for cold regions research, room temperature can be decreased to -10°F Towing Capabilities Towing Capabilities Yes Maximum Velocity(m/s) 0.5 Length of Effective Tow(m) 15.0 Wavemaking Capabilities Wavemaking Capabilities None Channel/Tunnel/Flume Channel/Tunnel/Flume None Wind Capabilities Wind Capabilities None Control and Data Acquisition Cameras Yes Description of Camera Types Underwater Available Sensors Acoustics, Thermal, Turbulence, Velocity Data Generation Capability

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

X-rays at Solid-Liquid Surfaces  

SciTech Connect

Solid-liquid interfaces play an important role in many areas of current and future technologies, and in our biosphere. They play a key role in the development of nanofluidics and nanotribology, which sensitively depend on our knowledge of the microscopic structures and phenomena at the solid-liquid interface. The detailed understanding of how a fluid meets a wall is also a theoretical challenge. In particular, the phenomena at repulsive walls are of interest, since they affect many different phenomena, such as water-repellent surfaces or the role of the hydrophobic interaction in protein folding. Recent x-ray reflectivity studies of various solid-liquid interfaces have disclosed rather intriguiing phenomena, which will be discussed in this lecture: premelting of ice in contact with silica; liquid Pb in contact with Si; water in contact with hydrophobic surfaces. These experiments, carried out with high-energy x-ray microbeams, reveal detailed insight into the liquid density profile closest to the wall. A detailed insight into atomistic phenomena at solid-liquid interfaces is also a prerequisite in the microscopic control of electrochemical reactions at interfaces. Recent x-ray studies show the enormous future potential of such non-destructive analytical tools for the in situ observation of (electro-)chemical surface reactions. This lecture will review recent x-ray experiments on solid-liquid interfaces.

Dosch, Helmut (Max Planck Institute for Metals Research) [Max Planck Institute for Metals Research

2007-05-02T23:59:59.000Z

242

High-resolution subsurface water-ice distributions on Mars  

Science Journals Connector (OSTI)

... Theoretical models indicate that water ice is stable in the shallow subsurface (depths of water-ice table that steadily increases in depth with decreasing latitude. More detailed modelling has ...

Joshua L. Bandfield

2007-05-03T23:59:59.000Z

243

Searching for Cosmic Accelerators via IceCube  

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

Searching for Cosmic Accelerators via IceCube Searching for Cosmic Accelerators via IceCube Berkeley Lab Researchers Part of an International Hunt November 21, 2013 Lynn Yarris,...

244

Application of Ice Nucleation Kinetics in Orographic Clouds  

Science Journals Connector (OSTI)

Ice nucleation by silver iodide-sodium iodide aerosol particles has been characterized in the Colorado State University isothermal cloud chamber using the techniques of chemical kinetics. Two separate mechanisms of condensation-freezing ice ...

Rochelle R. Blumenstein; Robert M. Rauber; Lewis O. Grant; William G. Finnegan

1987-10-01T23:59:59.000Z

245

Evolutionary Optimization of an Ice Accretion Forecasting System  

Science Journals Connector (OSTI)

The ability to model and forecast accretion of ice on structures is very important for many industrial sectors. For example, studies conducted by the power transmission industry indicate that the majority of failures are caused by icing on ...

Pawel Pytlak; Petr Musilek; Edward Lozowski; Dan Arnold

2010-07-01T23:59:59.000Z

246

Cirrus cloud formation and the role of heterogeneous ice nuclei  

E-Print Network (OSTI)

Composition, size, and phase are key properties that define the ability of an aerosol particle to initiate ice in cirrus clouds. Properties of cirrus ice nuclei (IN) have not been well constrained due to a lack of systematic ...

Froyd, Karl D.

2013-01-01T23:59:59.000Z

247

Meltwater effects on flow of Greenland's ice sheet less severe...  

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

severe than feared Meltwater effects on flow of Greenland's ice sheet less severe for sea level rise than earlier feared, scientists say The team found that accelerating ice sheet...

248

Field determination of the densities of lake ice sheets  

Science Journals Connector (OSTI)

Oct 3, 1975 ... mating the mean density of the white ice component of such a sheet makes use of the buoyancy equation for floating ice in the form h' ' p'i =.

2000-01-04T23:59:59.000Z

249

Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Electric Ice Electric Ice Resurfacers Improve Air Quality in Minnesota to someone by E-mail Share Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality in Minnesota on Facebook Tweet about Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality in Minnesota on Twitter Bookmark Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality in Minnesota on Google Bookmark Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality in Minnesota on Delicious Rank Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality in Minnesota on Digg Find More places to share Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality in Minnesota on AddThis.com... Sept. 14, 2013

250

Liquid level detector  

DOE Patents (OSTI)

A liquid level detector for low pressure boilers. A boiler tank, from which apor, such as steam, normally exits via a main vent, is provided with a vertical side tube connected to the tank at the desired low liquid level. When the liquid level falls to the level of the side tube vapor escapes therethrough causing heating of a temperature sensitive device located in the side tube, which, for example, may activate a liquid supply means for adding liquid to the boiler tank. High liquid level in the boiler tank blocks entry of vapor into the side tube, allowing the temperature sensitive device to cool, for example, to ambient temperature.

Grasso, Albert P. (Vernon, CT)

1986-01-01T23:59:59.000Z

251

Liquid level detector  

DOE Patents (OSTI)

A liquid level detector for low pressure boilers. A boiler tank, from which vapor, such as steam, normally exits via a main vent, is provided with a vertical side tube connected to the tank at the desired low liquid level. When the liquid level falls to the level of the side tube vapor escapes therethrough causing heating of a temperature sensitive device located in the side tube, which, for example, may activate a liquid supply means for adding liquid to the boiler tank. High liquid level in the boiler tank blocks entry of vapor into the side tube, allowing the temperature sensitive device to cool, for example, to ambient temperature.

Grasso, A.P.

1984-02-21T23:59:59.000Z

252

ANIMATION OF THE NORMAL ICE CYCLE OF THE LAURENTIAN GREAT LAKES OF NORTH AMERICA  

E-Print Network (OSTI)

OF ANNUAL ICE CYCLE 1. Fall Cooling 2. Ice Formation 3. Ice Thickness 4. Seasonal Maximum Ice Cover 5ANIMATION OF THE NORMAL ICE CYCLE OF THE LAURENTIAN GREAT LAKES OF NORTH AMERICA R.A. Assel and J describes an interactive menu- driven computer tutorial on the contemporary ice cover climatology

253

Maximum late Holocene extent of the western Greenland Ice Sheet during the late 20th century  

E-Print Network (OSTI)

the 20th century. This suggests a lagged ice-margin response to prior cooling, such as the Little Ice AgeMaximum late Holocene extent of the western Greenland Ice Sheet during the late 20th century Samuel Keywords: Greenland Ice Sheet Little Ice Age 10 Be exposure dating Ice-dammed lake Lake sediment core a b

Briner, Jason P.

254

Numerical simulation of ice-induced loads on ships and comparison with field measurements  

E-Print Network (OSTI)

Department of Marine Technology, NTNU May 28, 2013 #12;Motivation Local ice load Global ice load ShipNumerical simulation of ice-induced loads on ships and comparison with field measurements Biao Su's performance · Ice-hull interaction · Local ice load · Global ice load · Ship's performance #12;Outline

Nørvåg, Kjetil

255

Maneuverability of ships in ice: numerical simulation and comparison with field measurements  

E-Print Network (OSTI)

Maneuverability of ships in ice: numerical simulation and comparison with field measurements Biao Su Department of Marine Technology, NTNU May 28, 2013 #12;Motivation Local ice load Global ice load Ship's performance · Ice-hull interaction · Local ice load · Global ice load · Ship's performance #12

Nørvåg, Kjetil

256

Recent Metal Pollution in Agassiz Ice Cap  

Science Journals Connector (OSTI)

This is probably due to the close proximity and similar elevation of the two areas (Agassiz Ice Cap, Canadian Arctic and Camp Century, northwest Greenland), which are likely subjected to the same polluted air masses. ... Figure 3 shows Pb concentrations covering the past 250 years for three different Arctic areas:? Camp Century, northwest Greenland (dashed line, ref 1); Summit, central Greenland (solid line, ref 8); and Agassiz Ice Cap (star symbols, this work). ... Since Camp Century is lower than Summit (1866 vs 3228 m above sea level) and is expected to receive more pollution, the relative position of the two lines is reasonable, the dashed line being higher than the solid one. ...

V. Cheam; G. Lawson; J. Lechner; R. Desrosiers

1998-11-10T23:59:59.000Z

257

The IceCube Computing Infrastructure Model  

Science Journals Connector (OSTI)

In addition to the big LHC experiments, a number of mid-size experiments are coming online which need to define new computing models to meet the demands on processing and storage requirements of those experiments. We present the hybrid computing model of IceCube which leverages Grid models with a more flexible direct user model as an example of a possible solution. In IceCube a central data center at UW-Madison serves as a Tier-0 with a single Tier-1 at DESY Zeuthen.

M Merck; S Barnet

2012-01-01T23:59:59.000Z

258

Covered Product Category: Water-Cooled Ice Machines  

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

The Federal Energy Management Program (FEMP) provides acquisition guidance and federal efficiency requirements for water-cooled ice machines.

259

An update on land-ice modeling in the CESM  

SciTech Connect

Mass loss from land ice, including the Greenland and Antarctic ice sheets as well as smaller glacier and ice caps, is making a large and growing contribution to global sea-level rise. Land ice is only beginning to be incorporated in climate models. The goal of the Land Ice Working Group (LIWG) is to develop improved land-ice models and incorporate them in CESM, in order to provide useful, physically-based sea-level predictions. LJWG efforts to date have led to the inclusion of a dynamic ice-sheet model (the Glimmer Community Ice Sheet Model, or Glimmer-CISM) in the Community Earth System Model (CESM), which was released in June 2010. CESM also includes a new surface-mass-balance scheme for ice sheets in the Community Land Model. Initial modeling efforts are focused on the Greenland ice sheet. Preliminary results are promising. In particular, the simulated surface mass balance for Greenland is in good agreement with observations and regional model results. The current model, however, has significant limitations: The land-ice coupling is one-way; we are using a serial version of Glimmer-CISM with the shallow-ice approximation; and there is no ice-ocean coupling. During the next year we plan to implement two-way coupling (including ice-ocean coupling with a dynamic Antarctic ice sheet) with a parallel , higher-order version of Glimmer-CISM. We will also add parameterizations of small glaciers and ice caps. With these model improvements, CESM will be able to simulate all the major contributors to 21st century global sea-level rise. Results of the first round of simulations should be available in time to be included in the Fifth Assessment Report (ARS) of the Intergovernmental Panel on Climate Change.

Lipscomb, William H [Los Alamos National Laboratory

2011-01-18T23:59:59.000Z

260

Fourier spectroscopy of individual nitrogen impurity centers in GaAs  

SciTech Connect

We report on the measurement of the exciton homogeneous linewidth in nitrogen impurity centers in GaAs:N. Fourier spectroscopy on a single center revealed a long coherence time over 300 ps at low temperature. The narrowest linewidth obtained at liquid helium temperature is 3.5 ?eV, which is comparable with that of semiconductor quantum dots. The linewidth increases with increasing temperature, showing a thermally activated behavior with activation energies of 2?5 meV.

Ikezawa, Michio [PRESTO-JST, JST, Kawaguchi, Japan and Institute of Physics, University of Tsukuba, Tsukuba (Japan); Zhang, Liao; Mori, Tatsuya; Masumoto, Yasuaki [Institute of Physics, University of Tsukuba, Tsukuba (Japan); Sakuma, Yoshiki; Sakoda, Kazuaki [National Institute for Materials Science, Tsukuba (Japan)

2013-12-04T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Composition of liquids from coals of different rank  

SciTech Connect

Eight coal liquids prepared from six coals of widely differing rank were compared with respect to their suitability as potential feedstocks for production of refined fuels. The compositions of the liquids were determined by methods adapted from those developed for characterization of petroleum crudes. The coal liquids were prepared and upgraded by hydrogenation in a batch autoclave. The reaction conditions employed were selected to minimize hydrocarbon ring-opening reactions and, at the same time, to produce most of the hydrocarbon liquids potentially available from the coals. The degree of hydrogenation of the raw coal liquids was varied as required to decrease the nitrogen content to about the same level and to provide a predominantly hydrocarbon liquid for analysis. Distilled fractions of the upgraded coal liquids boiling up to 540/sup 0/C were characterized by a combination of separation and analytical techniques including adsorption chromatography; gel permeation chromatography; separations of acids, bases, and asphaltenes; and high- and low-resolution mass spectrometry. In general, the results show that liquids of comparable suitability as feedstocks for production of refined fuels can be produced from coals of different rank.

Sturm, G.P. Jr.; Thomson, J.S.; Woodward, P.W.; Vogh, J.W.

1980-09-01T23:59:59.000Z

262

Contemporary Lake Superior Ice Cover Climatology Raymond A. Assel  

E-Print Network (OSTI)

1973 to 2002) were digitized and analyzed to produce ice charts that portray spatial patterns of datesContemporary Lake Superior Ice Cover Climatology Raymond A. Assel NOAA Great Lakes Environmental Introduction A brief discussion of Lake Superior ice cover climatology (Phillips, 1978) was included

263

On the scatteringgreenhouse effect of CO 2 ice clouds  

E-Print Network (OSTI)

that young Mars was warm enough to support flowing water present a continuing enigma (Squyres and Kasting 1994). Kasting (1991) showed that, owing to the effects of CO 2 condensation on temperature lapse rate the optical effects of CO 2 ­ice clouds, but remarked that because CO 2 ­ice (unlike water­ice) has very low

Pierrehumbert, Raymond

264

Spectroscopic measurement of the vapour pressure of ice  

Science Journals Connector (OSTI)

...Murphy Meeting Issue Water in the gas phase . We...triple-point state of water and uses frequency-stabilized...temperature-regulated standard humidity generator, which contains ice...within 0.35 per cent. water vapour|ice vapour pressure...technical fields. In atmospheric physics, ice crystals...

2012-01-01T23:59:59.000Z

265

STATE OF CALIFORNIA ICE STORAGE AIR CONDITIONING (ISAC) UNITS  

E-Print Network (OSTI)

cooling with the compressor). Yes No #12;STATE OF CALIFORNIA ICE STORAGE AIR CONDITIONING (ISAC) UNITS CECSTATE OF CALIFORNIA ICE STORAGE AIR CONDITIONING (ISAC) UNITS CEC-CF-6R-MECH-08 (Revised 08/09) CALIFORNIA ENERGY COMMISSION INSTALLATION CERTIFICATE CF-6R-MECH-08 Ice Storage Air Conditioning (ISAC) Units

266

Climate impacts of ice nucleation A. Gettelman,1,2  

E-Print Network (OSTI)

back to space, cooling the planet. However, ice clouds, being cold, radiate much less long wave and cooling, with warming thought to be slightly larger. [3] Changes to ice cloud microphysics might alterClimate impacts of ice nucleation A. Gettelman,1,2 X. Liu,3 D. Barahona,4,5 U. Lohmann,2 and C

Gettelman, Andrew

267

Stresses generated in cooling viscoelastic ice shells: Application to Europa  

E-Print Network (OSTI)

Stresses generated in cooling viscoelastic ice shells: Application to Europa F. Nimmo Department to cooling and the expansion of the shell due to the ice-water volume change. The former effect generates Citation: Nimmo, F. (2004), Stresses generated in cooling viscoelastic ice shells: Application to Europa, J

Nimmo, Francis

268

Characteristics of Arctic Sea-Ice Thickness Variability in GCMs  

Science Journals Connector (OSTI)

Skillful Arctic sea ice forecasts may be possible for lead times of months or even years owing to the persistence of thickness anomalies. In this study sea ice thickness variability is characterized in fully coupled GCMs and sea iceocean-only ...

Edward Blanchard-Wrigglesworth; Cecilia M. Bitz

2014-11-01T23:59:59.000Z

269

Autosub missions beneath Polar Ice: Preparation and Experience  

E-Print Network (OSTI)

Autosub missions beneath Polar Ice: Preparation and Experience Gwyn Griffiths Southampton, May 2004 #12;Autosub Polar Campaigns J 2001 - Krill distribution and sea ice thickness studies in the northern Weddell Sea (Brierley, Fernandes and Brandon). J 2003 - Sea ice thickness, Bellingshausen Sea

Griffiths, Gwyn

270

Bonding and Electronic Properties of Ice at High Pressure  

E-Print Network (OSTI)

between the nearest oxygen atoms. All ice structures that we discussed so far are insulators. Militzer 1 Bonding and Electronic Properties of Ice at High Pressure B. Militzer Department of Earth of water ice at megabar pressure are characterized with ab initio computer simulations. The focus lies

Militzer, Burkhard

271

ICE SHEET SOURCES OF SEA LEVEL RISE AND FRESHWATER DISCHARGE  

E-Print Network (OSTI)

ICE SHEET SOURCES OF SEA LEVEL RISE AND FRESHWATER DISCHARGE DURING THE LAST DEGLACIATION Anders E the sources of sea level rise and freshwater dis- charge to the global oceans associated with retreat of ice­10 m sea level rise at 19.0­19.5 ka, sourced largely from Northern Hemisphere ice sheet retreat

Carlson, Anders

272

FROM INTERSTELLAR POLYCYCLIC AROMATIC HYDROCARBONS AND ICE TO ASTROBIOLOGY  

E-Print Network (OSTI)

photolysis of these ices produces a host of new compounds, some of which show intriguing prebiotic behavior1 FROM INTERSTELLAR POLYCYCLIC AROMATIC HYDROCARBONS AND ICE TO ASTROBIOLOGY LOUIS J. ALLAMANDOLA, the concept of ices in dense molecular clouds ignored, and the notion of large, abundant, gas phase, carbon

273

Correspondence Laboratory observations of debris-bearing ice facies frozen  

E-Print Network (OSTI)

, others argue that supercooling is not the only mechanism for producing thick basal ice sequencesCorrespondence Laboratory observations of debris-bearing ice facies frozen from supercooled water. Supercooling has been invoked to explain anomalously thick basal ice sequences beneath temperate glaciers

Knight, Peter G.

274

The Need for SPIRIT DEMs to Quantify Antarctic Ice Sheet  

E-Print Network (OSTI)

appropriate mask ­ SPIRIT has the data and could produce the necessary DEMs #12;Conclusions · Antarctic iceThe Need for SPIRIT DEMs to Quantify Antarctic Ice Sheet Discharge Robert Bindschadler NASA & UMBC #12;Antarctic Ice Sheet Discharge · 33 largest, most active basins account for 840 Gt/a (Rignot

Berthier, Etienne

275

Computational methods for several models of ice stream flow  

E-Print Network (OSTI)

on any grid Shallow ice approximation produces oscillatory solutions Nonlinear and linear solvers haveComputational methods for several models of ice stream flow Jed Brown Laboratory of Hydrology transition at ice stream margins Bed slope is discontinuous and of order 1. Taylor expansions no longer valid

Brown, Jed

276

The Ice Rink Problem 1 Bernard M.E. Moret,  

E-Print Network (OSTI)

The Ice Rink Problem 1 Bernard M.E. Moret, Michael Collins, Jared Saia, and Ling Yu Department the sensor footprint. A similar task with a simpler geometry consists of cleaning an ice rink. We prove that the method used in ice rinks (the ``Zamboni algorithm'') is optimal and use it to develop heuristics

Moret, Bernard

277

Operation and Control of Full Ice-storage System  

E-Print Network (OSTI)

In a dividing time ice-storage system, the refrigerator does not operate during power's on-peak period, and all the cooling is supplied by the ice stored in off-peak period, so that the use of electricity can be maintained. When the ice is thawing...

Liu, Q.; Liu, Y.

2006-01-01T23:59:59.000Z

278

Stanford Nitrogen Group | Department of Energy  

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

Science & Innovation » Innovation » Commercialization » National Science & Innovation » Innovation » Commercialization » National Clean Energy Business Plan Competition » Stanford Nitrogen Group National Clean Energy Business Plan Competition Stanford Nitrogen Group Stanford University The Stanford Nitrogen Group developed a new wastewater treatment process for the removal and recovery of energy from waste nitrogen (i.e. ammonia). This process improves the efficiency and lowers the cost of nitrogen treatment. The process is termed the Coupled Aerobic-anoxic Nitrous Decomposition Operation (CANDO) and consists of 2 principal steps: biological conversion of ammonia to N2O gas, and combustion of a fuel (i.e. biogas) with N2O to recover energy. It's the first wastewater treatment process to recover energy from nitrogen.

279

Viscosity, specific (for liquids)  

Science Journals Connector (OSTI)

n. The ratio between the viscosity of a liquid and the viscosity of water at the same temperature. Specific viscosity is sometimes used interchangeably with relative viscosity for liquids.

2007-01-01T23:59:59.000Z

280

Lignite-based nitrogenous fertilizers  

SciTech Connect

A sample of lignite from Elbistan was oxidized by nitric acid in two stages, using relatively dilute acid in the first stage and concentrated acid in the second stage, and then the oxidized product was ammoniated so that a coal-based fertilizer could be produced. The experiments of all the stages were designed by a 1/2 X full factorial design. It was observed that base exchange capacity and nitrogen content of coal-based fertilizers produced in this work were as good as or better than those obtained by other investigators.

Baris, H.; Dincer, S.

1983-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Nitrogen fixation method and apparatus  

DOE Patents (OSTI)

A method and apparatus for achieving nitrogen fixation includes a volumetric electric discharge chamber. The volumetric discharge chamber provides an even distribution of an electron beam, and enables the chamber to be maintained at a controlled energy to pressure (E/p) ratio. An E/p ratio of from 5 to 15 kV/atm of O[sub 2]/cm promotes the formation of vibrationally excited N[sub 2]. Atomic oxygen interacts with vibrationally excited N[sub 2] at a much quicker rate than unexcited N[sub 2], greatly improving the rate at which NO is formed. 1 fig.

Chen, H.L.

1983-08-16T23:59:59.000Z

282

Liquid Piston Stirling Engines  

Science Journals Connector (OSTI)

The Fluidyne liquid piston engine is a simple free-piston Stirling engine that can be made from nothing more...

Graham Walker Ph. D.; J. R. Senft Ph.D.

1985-01-01T23:59:59.000Z

283

Environmental biogeochemistry. V. 1: Carbon, nitrogen, phosphorus ...  

Science Journals Connector (OSTI)

V. 1: Carbon, nitrogen, phosphorus, sulfur and selenium cycles. V. 2: Metals transfer and ecological mass balances. Ann Arbor Sci. Publ., Inc., Ann. Arbor, Mich.

2000-01-06T23:59:59.000Z

284

Nitrogen Deposition in the Southern High Plains  

E-Print Network (OSTI)

Nitrogen Deposition in the Southern High Plains Nitrogen is necessary for life on earth, but getting too much of it can be harmful. Recent research in delicate alpine watersheds of the western United States has suggested that the amount... Nitrogen Deposition in the Southern High Plains Conservation of mass: It?s not just a good idea, it?s the law Nitrogen, along with every other element in nature, obeys certain physical laws. The first of those laws, the law of conservation of mass...

Upadhyay, Jeetendra; Auvermann, Brent W.; Bush, K. Jack; Mukhtar, Saqib

2008-02-11T23:59:59.000Z

285

Seismic reflection studies of the Amery Ice Shelf, East Antarctica: delineating meteoric and marine ice  

Science Journals Connector (OSTI)

......important role in the global climate system (Allison...studies of the impact of global warming on present-day ice shelves...the subsequent effect on global ocean circulation and...graben, where Permian coal-bearing, flat lying......

Kathleen L. McMahon; Mark A. Lackie

2006-08-01T23:59:59.000Z

286

The Solubility of Oxygen and Ozone in Liquids  

Science Journals Connector (OSTI)

This review covers the solubility of oxygen and ozone in liquids as a function of temperature and pressure. Solubility data for individual systems were critically evaluated and recommended or tentative values presented in many cases. The trend of solubilities in homologous series or related solvents is discussed. Liquids include water;seawater; aqueous salt solutions; mixed solvents; hydrocarbons; organic compounds containing oxygen halogen sulfur nitrogen or silicon; olive oil; and human blood. For ozone only its solubility in water is presented. Key words: aqueous solutions; biological fluids; gas solubility; hydrocarbons; mixed solvents; organic solvents; oxygen; ozone;seawater;water.

Rubin Battino; Timothy R. Rettich; Toshihiro Tominaga

1983-01-01T23:59:59.000Z

287

OPTICAL CONSTANTS OF NH{sub 3} AND NH{sub 3}:N{sub 2} AMORPHOUS ICES IN THE NEAR-INFRARED AND MID-INFRARED REGIONS  

SciTech Connect

Ammonia ice has been detected on different astrophysical media ranging from interstellar medium (ISM) particles to the surface of various icy bodies of our solar system, where nitrogen is also present. We have carried out a detailed study of amorphous NH{sub 3} ice and NH{sub 3}:N{sub 2} ice mixtures, based on infrared (IR) spectra in the mid-IR (MIR) and near-IR (NIR) regions, supported by theoretical quantum chemical calculations. Spectra of varying ice thicknesses were obtained and optical constants were calculated for amorphous NH{sub 3} at 15 K and 30 K and for a NH{sub 3}:N{sub 2} mixture at 15 K over a 500-7000 cm{sup 1} spectral range. These spectra have improved accuracy over previous data, where available. Moreover, we also obtained absolute values for the band strengths of the more prominent IR features in both spectral regions. Our results indicate that the estimated NH{sub 3} concentration in ISM ices should be scaled upward by ?30%.

Zanchet, Alexandre; Rodrguez-Lazcano, Yamilet; Glvez, scar; Herrero, Vctor J.; Escribano, Rafael; Mat, Beln, E-mail: belen.mate@csic.es [Instituto de Estructura de la Materia, IEM-CSIC, Serrano 123, E-28006 Madrid (Spain)

2013-11-01T23:59:59.000Z

288

Ice Mass Balance Buoys: A tool for measuring and attributing changes in the thickness of the Arctic sea ice cover  

E-Print Network (OSTI)

Ice Mass Balance Buoys: A tool for measuring and attributing changes in the thickness of the Arctic sea ice cover Jacqueline A. Richter-Menge1 , Donald K. Perovich1 , Bruce C. Elder1 , Keran Claffey1 Abstract Recent observational and modeling studies indicate that the Arctic sea ice cover is undergoing

Rigor, Ignatius G.

289

Polar bears could survive on persisting ice  

Science Journals Connector (OSTI)

... 2010, although the project has stopped moving forwards since the US government clamped down on offshore oil drilling after the Gulf of Mexico spill in April. Smith doesn't know ... drilling after the Gulf of Mexico spill in April. Smith doesn't know whether a rig itself would have an impact on wildlife seeking refuge on ice in a shoal, ...

Nicola Jones

2010-12-15T23:59:59.000Z

290

Stability of ice-sheet grounding lines  

Science Journals Connector (OSTI)

...for flow down shallow valleys, while the latter considers...Pine Island glacier in West Antarctica. Conclusions...Setting gives a single valley with a width equal to...presence of the internal valley, even if it is narrow...dynamical models of the West Antarctic Ice Sheet...

2010-01-01T23:59:59.000Z

291

Ice nanoclusters at hydrophobic metal surfaces  

E-Print Network (OSTI)

and characterization of metal-supported water hexamers and a family of hydrated nanoclusters-- heptamers, octamers to nucleate through the presence of an `ice nucleating agent': a microscopic seed particle of salt, sand or such as the formation of new water structures not observed in the gas phase, altered H-bond strengths or different

292

Ocean and Sea Ice SAF Technical Note  

E-Print Network (OSTI)

Ocean and Sea Ice SAF Technical Note SAF/OSI/CDOP/KNMI/TEC/TN/165 CMOD5.n - the CMOD5 GMF SAF to produce neutral winds rather than real 10m winds. Currently, the CMOD5 Geophysical Model]. KNMI subsequently produced a CMOD5.n Lookup Table and tested the retrieved Maximum Likelihood Estimator

Stoffelen, Ad

293

The Abundance of Interstellar Nitrogen  

E-Print Network (OSTI)

Using the HST Goddard High Resolution Spectrograph (GHRS), we have obtained high S/N echelle observations of the weak interstellar N I 1160, 1161 A absorption doublet toward the stars Gamma Cas, Lambda Ori, Iota Ori, Kappa Ori, Delta Sco, and Kappa Sco. In combination with a previous GHRS measurement of N I toward Zeta Oph, these new observations yield a mean interstellar gas phase nitrogen abundance (per 10$^6$ H atoms) of 10$^6$ N/H = 75 +/- 4. There are no statistically significant variations in the measured N abundances from sightline to sightline and no evidence of density-dependent depletion from the gas-phase. Since N is not expected to be depleted much into dust grains in these diffuse sightlines, its gas-phase abundance should reflect the total interstellar abundance. Consequently, the GHRS observations imply that the abundance of interstellar nitrogen (gas plus grains) in the local Milky Way is about 80% of the solar system value of 10$^6$ N/H = 93 +/- 16. Although this interstellar abundance deficit is somewhat less than that recently found for oxygen and krypton with GHRS, the solar N abundance and the N I oscillator strengths are too uncertain to definitively rule out either a solar ISM N abundance or a 2/3 solar ISM N abundance similar to that of O and Kr.

David M. Meyer; Jason A. Cardelli; Ulysses J. Sofia

1997-10-15T23:59:59.000Z

294

Mechanisms of plant species impacts on ecosystem nitrogen cycling  

E-Print Network (OSTI)

, this microbial nitrogen loop is driven by plant-supplied carbon and provides a strong negative feedback through by an increase in the relative nitrogen content in decomposing litter and a much lower carbon-to-nitrogen ratio by a microbial nitrogen loop. Nitrogen is released from the soil organic matter and incorporated into microbial

Minnesota, University of

295

Fertilizer and Nitrogen 1 billion tons of artificial nitrogen fertilizer used annually.  

E-Print Network (OSTI)

Fertilizer and Nitrogen 1 billion tons of artificial nitrogen fertilizer used annually. Emissions. (fertilizers that use nitric acid or ammonium bicarbonate result in emissions of nitrogen oxides, nitrous oxide, ammonia and carbon dioxide into the atmosphere.) ~Indirect: Phosphorus in excess causes eutrophication

Toohey, Darin W.

296

Catching cosmic clues in the ice - recent results from IceCube  

E-Print Network (OSTI)

IceCube is a neutrino observatory located deep in the Antarctic glacier close to the geographical South Pole. Close to a gigaton of ice has been instrumented with optical sensors with the primary goal of searching for neutrinos from the still unknown sources of the highest-energy cosmic rays. Last year, IceCube observed for the first time ever a handful of high-energy neutrinos which must have originated outside the solar system. The discovery was named the 2013 Breakthrough of the Year by the British magazine Physics World. It is the first necessary step to actually achieve the dream of charting the places in the universe able to accelerate hadrons to energies over a million times higher than those at the LHC. The science goals of IceCube extend beyond astrophysics: IceCube is also a powerful tool for searches of dark matter and can be used to study phenomena connected to the neutrinos themselves, like neutrino oscillations. The talk will be an update on the most recent results from IceCube.

CERN. Geneva

2014-01-01T23:59:59.000Z

297

Electronic structure effects in liquid water studied by photoelectron spectroscopy and density functional theory  

SciTech Connect

We present valence photoelectron emission spectra of liquid water in comparison with gas-phase water, ice close to the melting point, low temperature amorphous and crystalline ice. All aggregation states have major electronic structure changes relative to the free molecule, with rehybridization and development of bonding and anti-bonding states accompanying the hydrogen bond formation. Sensitivity to the local structural order, most prominent in the shape and splitting of the occupied 3a{sub 1} orbital, is understood from the electronic structure averaging over various geometrical structures, and reflects the local nature of the orbital interaction.

Nordlund, Dennis; Odelius, Michael; Bluhm, Hendrik; Ogasawara, Hirohito; Pettersson, Lars G.M.; Nilsson, Anders

2008-04-29T23:59:59.000Z

298

Liquid Wall Chambers  

SciTech Connect

The key feature of liquid wall chambers is the use of a renewable liquid layer to protect chamber structures from target emissions. Two primary options have been proposed and studied: wetted wall chambers and thick liquid wall (TLW) chambers. With wetted wall designs, a thin layer of liquid shields the structural first wall from short ranged target emissions (x-rays, ions and debris) but not neutrons. Various schemes have been proposed to establish and renew the liquid layer between shots including flow-guiding porous fabrics (e.g., Osiris, HIBALL), porous rigid structures (Prometheus) and thin film flows (KOYO). The thin liquid layer can be the tritium breeding material (e.g., flibe, PbLi, or Li) or another liquid metal such as Pb. TLWs use liquid jets injected by stationary or oscillating nozzles to form a neutronically thick layer (typically with an effective thickness of {approx}50 cm) of liquid between the target and first structural wall. In addition to absorbing short ranged emissions, the thick liquid layer degrades the neutron flux and energy reaching the first wall, typically by {approx}10 x x, so that steel walls can survive for the life of the plant ({approx}30-60 yrs). The thick liquid serves as the primary coolant and tritium breeding material (most recent designs use flibe, but the earliest concepts used Li). In essence, the TLW places the fusion blanket inside the first wall instead of behind the first wall.

Meier, W R

2011-02-24T23:59:59.000Z

299

Sliding Luttinger liquid phases  

Science Journals Connector (OSTI)

We study systems of coupled spin-gapped and gapless Luttinger liquids. First, we establish the existence of a sliding Luttinger liquid phase for a system of weakly coupled parallel quantum wires, with and without disorder. It is shown that the coupling can stabilize a Luttinger liquid phase in the presence of disorder. We then extend our analysis to a system of crossed Luttinger liquids and establish the stability of a non-Fermi-liquid state: the crossed sliding Luttinger liquid phase. In this phase the system exhibits a finite-temperature, long-wavelength, isotropic electric conductivity that diverges as a power law in temperature T as T?0. This two-dimensional system has many properties of a true isotropic Luttinger liquid, though at zero temperature it becomes anisotropic. An extension of this model to a three-dimensional stack exhibits a much higher in-plane conductivity than the conductivity in a perpendicular direction.

Ranjan Mukhopadhyay; C. L. Kane; T. C. Lubensky

2001-07-09T23:59:59.000Z

300

Grounding-line migration in plan-view marine ice-sheet models: results of the ice2sea MISMIP3d intercomparison  

E-Print Network (OSTI)

models (SSA, AHySSA) produce larger ice sheets than modelsplan-view ice-sheet models they produce different results.the Antarctic ice sheet should at least produce grounding-

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Nutrient Management Module No. 3 Nitrogen Cycling,  

E-Print Network (OSTI)

, it is important to first understand the various transformations that N undergoes within the soil. Nitrogen Cycling to be the sum of ammonium and nitrate, although urea, a type of organic N, may also be plant available. Nitrogen a fraction) by dry yield (in lb/ac). It's useful to compare actual uptake rates to N fertilizer rates

Lawrence, Rick L.

302

NITROGEN ISOTOPES IN PALEOCLIMATE JULIAN P. SACHS  

E-Print Network (OSTI)

denitrification, the conversion of nitrate to N2 gas with its subsequent loss to the atmosphere (25-180 Tg N of atmospheric carbon dioxide, and is the precursor to petroleum deposits it is important to understand nitrogen of nitrogen is atmospheric dinitrogen gas (N2), consisting of 3.9 x 109 Tg N (Wada and Hattori, 1990

Sachs, Julian P.

303

Oxygen and Nitrogen Contamination During Arc Welding  

E-Print Network (OSTI)

) ) : ,- Oxygen and Nitrogen Contamination During Arc Welding T. W. Eagar Department of }faterials, mechanisms, and expected levels of oxygen and nitrogen contamination during gas tungsten arc, gas metal arc indicating the importance of dec9mposition of SiOz into silicon monoxide and oxygen are presented, indicating

Eagar, Thomas W.

304

Technology Innovations and Experience Curves for Nitrogen Oxides Control Technologies  

E-Print Network (OSTI)

red power plants. Nitrogen dioxide (NO 2 ) is one of the sixeffects, including nitrogen dioxide (NO 2 ) and ground-levelgradually oxidized to nitrogen dioxide (NO 2 ) once emitted

Yeh, Sonia; Rubin, Edward S.; Taylor, Margaret R.

2007-01-01T23:59:59.000Z

305

nitrogen oxides | OpenEI  

Open Energy Info (EERE)

20 20 Varnish cache server Browse Upload data GDR 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142279720 Varnish cache server nitrogen oxides Dataset Summary Description Emissions from energy use in buildings are usually estimated on an annual basis using annual average multipliers. Using annual numbers provides a reasonable estimation of emissions, but it provides no indication of the temporal nature of the emissions. Therefore, there is no way of understanding the impact on emissions from load shifting and peak shaving technologies such as thermal energy storage, on-site renewable energy, and demand control. Source NREL Date Released April 11th, 2011 (3 years ago) Date Updated April 11th, 2011 (3 years ago)

306

INSENSITIVE HIGH-NITROGEN COMPOUNDS  

SciTech Connect

The conventional approach to developing energetic molecules is to chemically place one or more nitro groups onto a carbon skeleton, which is why the term ''nitration'' is synonymous to explosives preparation. The nitro group carries the oxygen that reacts with the skeletal carbon and hydrogen fuels, which in turn produces the heat and gaseous reaction products necessary for driving an explosive shock. These nitro-containing energetic molecules typically have heats of formation near zero and therefore most of the released energy is derived from the combustion process. Our investigation of the tetrazine, furazan and tetrazole ring systems has offered a different approach to explosives development, where a significant amount of the chemical potential energy is derived from their large positive heats of formation. Because these compounds often contain a large percentage of nitrogen atoms, they are usually regarded as high-nitrogen fuels or explosives. A general artifact of these high-nitrogen compounds is that they are less sensitive to initiation (e.g. by impact) when compared to traditional nitro-containing explosives of similar performances. Using the precursor, 3,6-bis-(3,5-dimethylpyrazol-1-yl)-s-tetrazine, several useful energetic compounds based on the s-tetrazine system have been synthesized and studied. Some of the first compounds are 3,6-diamino-s-tetrazine-1,4-dioxide (LAX-112) and 3,6-dihydrazino-s-tetrazine (DHT). LAX-112 was once extensively studied as an insensitive explosive by Los Alamos; DHT is an example of a high-nitrogen explosive that relies entirely on its heat of formation for sustaining a detonation. Recent synthesis efforts have yielded an azo-s-tetrazine, 3,3'-azobis(6-amino-s-tetrazine) or DAAT, which has a very high positive heat of formation. The compounds, 4,4'-diamino-3,3'-azoxyfurazan (DAAF) and 4,4'-diamino-3,3'-azofurazan (DAAzF), may have important future roles in insensitive explosive applications. Neither DAAF nor DAAzF can be initiated by laboratory impact drop tests, yet both have in some aspects better explosive performances than 1,3,5-triamino-2,4,6-trinitrobenzene TATB--the standard of insensitive high explosives. The thermal stability of DAAzF is equal to that of hexanitrostilbene (HNS), yet it too is a better explosive performer. The recently discovered tetrazol derivative, 3,6-bis-(1H-1,2,3,4-tetrazol-5-ylamino)-s-tetrazine (BTATz) was measured to have exceptional positive heats of formation and to be insensitive to explosive initiation. Because of its high burn rate with low sensitivity to pressure, this material is of great interest to the propellant community.

D. CHAVEZ; ET AL

2001-03-01T23:59:59.000Z

307

The Nitrogen-Nitride Anode.  

SciTech Connect

Nitrogen gas N 2 can be reduced to nitride N -3 in molten LiCl-KCl eutectic salt electrolyte. However, the direct oxidation of N -3 back to N 2 is kinetically slow and only occurs at high overvoltage. The overvoltage for N -3 oxidation can be eliminated by coordinating the N -3 with BN to form the dinitridoborate (BN 2 -3 ) anion which forms a 1-D conjugated linear inorganic polymer with -Li-N-B-N- repeating units. This polymer precipitates out of solution as Li 3 BN 2 which becomes a metallic conductor upon delithiation. Li 3 BN 2 is oxidized to Li + + N 2 + BN at about the N 2 /N -3 redox potential with very little overvoltage. In this report we evaluate the N 2 /N -3 redox couple as a battery anode for energy storage.

Delnick, Frank M.

2014-10-01T23:59:59.000Z

308

Nitrogen Fixation and Dentrification in Sediments of Eutrophic Mediterranean-Type Estuaries: Seasonal Patterns and Responses to Anthropogenic Nitrogen Inputs  

E-Print Network (OSTI)

and mechanisms controlling sediment nitrogen fixation in aKane T & Fong P. 2007. Sediment nitrogen fixation in UpperKane T & Fong P. 2007. Sediment nitrogen fixation in Upper

Kane, Tonya Lynn

2012-01-01T23:59:59.000Z

309

Nitrogen-doped Graphene and Its Electrochemical Applications...  

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

doped Graphene and Its Electrochemical Applications. Nitrogen-doped Graphene and Its Electrochemical Applications. Abstract: Nitrogen-doped graphene (N-graphene) is obtained by...

310

Nitrogen Control in Electric Arc Furnace Steelmaking by Direct...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Nitrogen Control in Electric Arc Furnace Steelmaking by Direct Reduced Iron Fines Injection Nitrogen Control in Electric Arc Furnace Steelmaking by Direct Reduced Iron Fines...

311

Revised estimates of Greenland ice sheet thinning histories based on ice-core records  

Science Journals Connector (OSTI)

Ice core records were recently used to infer elevation changes of the Greenland ice sheet throughout the Holocene. The inferred elevation changes show a significantly greater elevation reduction than those output from numerical models, bringing into question the accuracy of the model-based reconstructions and, to some extent, the estimated elevation histories. A key component of the ice core analysis involved removing the influence of vertical surface motion on the ?18O signal measured from the Agassiz and Renland ice caps. We re-visit the original analysis with the intent to determine if the use of more accurate land uplift curves can account for some of the above noted discrepancy. To improve on the original analysis, we apply a geophysical model of glacial isostatic adjustment calibrated to sea-level records from the Queen Elizabeth Islands and Greenland to calculate the influence of land height changes on the ?18O signal from the two ice cores. This procedure is complicated by the fact that ?18O contained in Agassiz ice is influenced by land height changes distant from the ice cap and so selecting a single location at which to compute the land height signal is not possible. Uncertainty in this selection is further complicated by the possible influence of Innuitian ice during the early Holocene (128kaBP). Our results indicate that a more accurate treatment of the uplift correction leads to elevation histories that are, in general, shifted down relative to the original curves at GRIP, NGRIP, DYE-3 and Camp Century. In addition, compared to the original analysis, the 1-? uncertainty is considerably larger at GRIP and NGRIP. These changes reduce the data-model discrepancy reported by Vinther etal. (2009) at GRIP, NGRIP, DYE-3 and Camp Century. A more accurate treatment of isostasy and surface loading also acts to improve the data-model fits such that the residuals at all four sites for the period 8kaBP to present are significantly reduced compared to the original analysis. Prior to 8kaBP, the possible influence of Innuitian ice on the inferred elevation histories prevents a meaningful comparison.

Benoit S. Lecavalier; Glenn A. Milne; Bo M. Vinther; David A. Fisher; Arthur S. Dyke; Matthew J.R. Simpson

2013-01-01T23:59:59.000Z

312

Large Scale Ice Water Path and 3-D Ice Water Content  

DOE Data Explorer (OSTI)

Cloud ice water concentration is one of the most important, yet poorly observed, cloud properties. Developing physical parameterizations used in general circulation models through single-column modeling is one of the key foci of the ARM program. In addition to the vertical profiles of temperature, water vapor and condensed water at the model grids, large-scale horizontal advective tendencies of these variables are also required as forcing terms in the single-column models. Observed horizontal advection of condensed water has not been available because the radar/lidar/radiometer observations at the ARM site are single-point measurement, therefore, do not provide horizontal distribution of condensed water. The intention of this product is to provide large-scale distribution of cloud ice water by merging available surface and satellite measurements. The satellite cloud ice water algorithm uses ARM ground-based measurements as baseline, produces datasets for 3-D cloud ice water distributions in a 10 deg x 10 deg area near ARM site. The approach of the study is to expand a (surface) point measurement to an (satellite) areal measurement. That is, this study takes the advantage of the high quality cloud measurements at the point of ARM site. We use the cloud characteristics derived from the point measurement to guide/constrain satellite retrieval, then use the satellite algorithm to derive the cloud ice water distributions within an area, i.e., 10 deg x 10 deg centered at ARM site.

Liu, Guosheng

313

Liquid level detector  

DOE Patents (OSTI)

A liquid level detector for conductive liquids for vertical installation in a tank, the detector having a probe positioned within a sheath and insulated therefrom by a seal so that the tip of the probe extends proximate to but not below the lower end of the sheath, the lower end terminating in a rim that is provided with notches, said lower end being tapered, the taper and notches preventing debris collection and bubble formation, said lower end when contacting liquid as it rises will form an airtight cavity defined by the liquid, the interior sheath wall, and the seal, the compression of air in the cavity preventing liquid from further entry into the sheath and contact with the seal. As a result, the liquid cannot deposit a film to form an electrical bridge across the seal.

Tshishiku, Eugene M. (Augusta, GA)

2011-08-09T23:59:59.000Z

314

ICE Cleaning Test Report.PDF  

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

16 16 FIELD DEMONSTRATION OF THE ICE 250 TM CLEANING SYSTEM AT THE ROCKY MOUNTAIN OILFIELD TESTING CENTER CASPER, WYOMING August 18-19, 1999 Date Published: October 5, 1999 J.L. Johnston L.M. Jackson PREPARED FOR THE UNITED STATES DEPARTMENT OF ENERGY/ROCKY MOUNTAIN OILFIELD TESTING CENTER Work Performed Under Rocky Mountain Oilfield Testing Center (RMOTC) CRADA No. 99-009 TABLE OF CONTENTS Abstract.............................................................................................................................................1 Introduction.......................................................................................................................................1 Product Description ...........................................................................................................................1

315

New physics with IceCube  

Science Journals Connector (OSTI)

IceCube, a cubic kilometer neutrino telescope, will be capable of probing neutrino-nucleon interactions in the ultrahigh energy regime, far beyond the energies reached by colliders. In this article we introduce a new observable that combines several advantages; it only makes use of the upward-going neutrino flux, so that the Earth filters the atmospheric muons, and it is only weakly dependent on the initial astrophysical flux uncertainties.

Matias M. Reynoso and Oscar A. Sampayo

2007-08-17T23:59:59.000Z

316

Drilling deep in South Pole Ice  

E-Print Network (OSTI)

To detect the tiny flux of ultra-high energy neutrinos from active galactic nuclei or from interactions of highest energy cosmic rays with the microwave background photons needs target masses of the order of several hundred cubic kilometers. Clear Antarctic ice has been discussed as a favorable material for hybrid detection of optical, radio and acoustic signals from ultra-high energy neutrino interactions. To apply these technologies at the adequate scale hundreds of holes have to be drilled in the ice down to depths of about 2500 m to deploy the corresponding sensors. To do this on a reasonable time scale is impossible with presently available tools. Remote drilling and deployment schemes have to be developed to make such a detector design reality. After a short discussion of the status of modern hot water drilling we present here a design of an autonomous melting probe, tested 50 years ago to reach a depth of about 1000 m in Greenland ice. A scenario how to build such a probe today with modern technologies...

Karg, Timo

2014-01-01T23:59:59.000Z

317

ICE LINES IN CIRCUMBINARY PROTOPLANETARY DISKS  

SciTech Connect

I examine the position of the ice line in circumbinary disks heated by steady mass accretion and stellar irradiation and compare with the critical semimajor axis, interior to which planetary orbits are unstable. There is a critical binary separation, dependent on the binary parameters and disk properties, for which binaries with separations larger than this critical value have ice lines that lie interior to the boundary of stability. For an equal-mass binary comprised of 1 M{sub Sun} components, this critical separation is Almost-Equal-To 1.04 AU, and scales weakly with mass accretion rate and Rosseland mean opacity ({proportional_to}[ M-dot {kappa}{sub R}]{sup 2/9}). Assuming a steady mass accretion rate of M-dot {approx}10{sup -8} M{sub Sun} yr{sup -1} and a Rosseland mean opacity of {kappa}{sub R} {approx} 1 cm{sup 2} g{sup -1}, I show that {approx}> 80% of all binary systems with component masses M{sub *} {approx}< 2.0 M{sub Sun} have ice lines that lie interior to the critical semimajor axis. This suggests that rocky planets should not form in these systems, a prediction which can be tested by looking for planets around binaries with separations larger than the critical separation with Kepler (difficult) and with microlensing.

Clanton, Christian, E-mail: clanton@astronomy.ohio-state.edu [Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH 43210 (United States)

2013-05-01T23:59:59.000Z

318

Dissociation and excitation coefficients of nitrogen molecules and nitrogen monoxide generation  

SciTech Connect

The excitation coefficient ?{sub N2} is calculated for the excited metastable level of N{sub 2}(A{sub 3}?{sub u}{sup +}) in nitrogen molecules. In addition, the dissociation coefficient of nitrogen molecules is investigated by making use of the Boltzmann distribution of the electrons in atmospheric plasmas. The excitation and electron-impact dissociation coefficients of nitrogen molecules are analytically expressed in terms of the electron temperature T{sub e} for evaluations of the reactive oxygen and nitrogen species in atmospheric plasmas. As an application example of these coefficients, the nitrogen monoxide generation through a microwave torch is carried out for a development of medical tool. The nitrogen monoxide concentration from a microwave plasma-torch can be easily controlled by the nitrogen flow rate, mole fraction of the oxygen gas, and the microwave power. A simple analytic expression of the nitrogen monoxide concentration is obtained in terms of the oxygen molecular density and gas flow rate. The experimental data agree remarkably well with the theoretical results from the analytical expression. A microwave nitrogen-torch can easily provide an appropriate nitrogen monoxide concentration for the wound healings.

Uhm, Han S.; Na, Young H.; Choi, Eun H.; Cho, Guangsup [Department of Electronic and Biological Physics, Kwangwoon University 447-1 Wolgye-Dong, Nowon-Gu, Seoul 137-701 (Korea, Republic of)] [Department of Electronic and Biological Physics, Kwangwoon University 447-1 Wolgye-Dong, Nowon-Gu, Seoul 137-701 (Korea, Republic of)

2013-08-15T23:59:59.000Z

319

Ultrasonic liquid level detector  

DOE Patents (OSTI)

An ultrasonic liquid level detector for use within a shielded container, the detector being tubular in shape with a chamber at its lower end into which liquid from in the container may enter and exit, the chamber having an ultrasonic transmitter and receiver in its top wall and a reflector plate or target as its bottom wall whereby when liquid fills the chamber a complete medium is then present through which an ultrasonic wave may be transmitted and reflected from the target thus signaling that the liquid is at chamber level.

Kotz, Dennis M. (North Augusta, SC); Hinz, William R. (Augusta, GA)

2010-09-28T23:59:59.000Z

320

NOAA Technical Memorandum ERL GLERL-20 SUMMARY OF GREAT LAKES WEATHER AND ICE CONDITIONS,  

E-Print Network (OSTI)

Cooling Phase 3.2.2 Ice Formation and Breakup Phases 3.2.3 The Ice Cycle on Lake Superior 3.2.4 The IceNOAA Technical Memorandum ERL GLERL-20 SUMMARY OF GREAT LAKES WEATHER AND ICE CONDITIONS, WINTER of this NOAA Environmental Research Laboratories publication. ii #12;LANDSAT fake color image of ice cover

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Changes of Myofibrillar Proteins and Texture in Freshwater Prawn, Macrobrachium rosenbergii, During Iced Storage  

E-Print Network (OSTI)

in an ice slurry. Upon death, whole prawns were stored in slush ice in an insulated container at O°C. After, During Iced Storage H. W. KYE, W. K. NIP and J. H. MOY Introduction Shelf life of ice-chilled freshwater in penaid shrimp dur ing iced storage and demonstrated myo fibrillar breakdown, especially Z

322

NAO influence on net sea ice production and exchanges in the Arctic region: a numerical study  

E-Print Network (OSTI)

ice cover suppresses the development of thermal insulation during the ice formation processNAO influence on net sea ice production and exchanges in the Arctic region: a numerical study Aixue The variability of net sea ice production and sea ice exchange between the Arctic and its adjacent seas

Hu, Aixue

323

HiRISE observations of new impact craters exposing Martian ground ice  

E-Print Network (OSTI)

ice rather than ice-cemented regolith. Although some clean ice may be produced by the impact processHiRISE observations of new impact craters exposing Martian ground ice Colin M. Dundas1 , Shane craters or clusters have been observed to excavate bright material inferred to be ice at mid

Byrne, Shane

324

A model of the threedimensional evolution of Arctic melt ponds on firstyear and multiyear sea ice  

E-Print Network (OSTI)

ice. In the summer the upper layers of sea ice and snow melts producing meltwater that accumulatesA model of the threedimensional evolution of Arctic melt ponds on firstyear and multiyear sea ice F in Arctic melt ponds on the surface of sea ice. An accurate estimate of the fraction of the sea ice surface

Feltham, Daniel

325

MERCURY PURIFICATION IN THE MEGAWATT LIQUID METAL SPALLATION TARGET OF EURISOL-DS Joerg Neuhausena  

E-Print Network (OSTI)

MERCURY PURIFICATION IN THE MEGAWATT LIQUID METAL SPALLATION TARGET OF EURISOL-DS Joerg Neuhausena. For the development of a purification procedure, knowledge about the chemical state of the different elements present-components are of different origin: Gaseous impurities include oxygen, nitrogen and water. The construction materials

McDonald, Kirk

326

Observations of pulsating Marangoni phenomena during the local oxidation of deoxidized liquid steel  

Science Journals Connector (OSTI)

...from the reacting gas species, D is the...the centre of the gas inlet tube as a function...the deoxidation solubility product at 1600 C...from the edge of the gas inlet tube as a function...experiments with water and surfactant-enriched...the dissolution of nitrogen into liquid iron...

1998-01-01T23:59:59.000Z

327

ARM - Publications: Science Team Meeting Documents: Investigation of Ice  

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

Investigation of Ice Crystal Shapes Using Multi-resolution Techniques Investigation of Ice Crystal Shapes Using Multi-resolution Techniques McFarquhar, Greg University of Illinois Better knowledge of small-scale features from ice crystals are needed to determine their effects on radiation and hence to improve the treatment of clouds in climate models. With the Cloud Particle Imager (CPI) it is now possible to capture ice crystal images with 2.3 μm resolution and 256 gray scales of illumination, providing an unprecedented wealth of information to utilize in the ongoing quest to understand the small scale structure of ice crystals. In this study, we applied wavelet and fractal analysis to CPI images of ice crystals collected in cirrus by the University of North Dakota Citation during the Intensive Observation Period at the Southern

328

STATEMENT OF WORK (SOW) TEMPLATE FOR ICE SUPPORT CONTRACTOR  

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

ICE SUPPORT CONTRACTOR ICE SUPPORT CONTRACTOR The template presented below is a Statement of Work (SOW) for services of an ICE Support Contractor for assisting OECM in conducting an ICE. Project and review specific information should be incorporated. Explanatory text appears in italics, while information that should be selected appears in >. The format and contents of this SOW is not compulsory, and the use is at the discretion of the OECM Analysts, tailored as appropriate for the desired contractor support activities. If no contractor support is required, this appendix is not used. Statement of Work for Independent Cost Estimate (ICE) > <ICE (i.e., Alternative Selection and Cost Range (CD-1), Establish

329

Ising model for melt ponds on Arctic sea ice  

E-Print Network (OSTI)

The albedo of melting Arctic sea ice, a key parameter in climate modeling, is determined by pools of water on the ice surface. Recent observations show an onset of pond complexity at a critical area of about 100 square meters, attended by a transition in pond fractal dimension. To explain this behavior and provide a statistical physics approach to sea ice modeling, we introduce a two dimensional Ising model for pond evolution which incorporates ice-albedo feedback and the underlying thermodynamics. The binary magnetic spin variables in the Ising model correspond to the presence of melt water or ice on the sea ice surface. The model exhibits a second-order phase transition from isolated to clustered melt ponds, with the evolution of pond complexity in the clustered phase consistent with the observations.

Ma, Y -P; Golden, K M

2014-01-01T23:59:59.000Z

330

IceCube Project Monthly Report August 2005  

E-Print Network (OSTI)

IceCube Project Monthly Report August 2005 Accomplishments All of the DOMs installed at the South additional emphasis on training and procedures. The training program for IceCube personnel scheduled to work-05 S-05 O-05 N-05 D-05 J-06 F-06 M-06 3&4 FY06 FY07 FY08 FY09 FY10 FY11 IceCube Project Baseline

Saffman, Mark

331

ICE CORES | History of Research, Greenland and Antarctica  

Science Journals Connector (OSTI)

Abstract Ice samples collected from polar ice sheets have been used to study past climate changes going almost as far back as 1My. The first ice core projects in the 1960s identified major climate transitions. Subsequent projects have shown that abrupt climate changes have occurred many times in the past and that there is a close link between high levels of atmospheric carbon dioxide and warm climate conditions.

M. Aydin

2013-01-01T23:59:59.000Z

332

ICE CORES | History of Research, Greenland and Antarctica  

Science Journals Connector (OSTI)

Ice samples collected from the polar ice sheets have been used to study past climate changes during the last million years. The first ice-core projects in the 1960s identified the major climate periods. Subsequent projects have shown that abrupt climate changes have occurred many times in the past and that there is a close link between high levels of atmospheric carbon dioxide and warm climate conditions.

K. Taylor

2007-01-01T23:59:59.000Z

333

Analytical determination of propeller performance degradation due to ice accretion  

E-Print Network (OSTI)

trajectory code. Unlike the Bragg code, the effects of compressibility, kinetic heating, and water runback are taken into account in this code, thus making it applicable to both rime and glaze ice conditions. Designed to be applied to helicopter config...- ' urations, the code employs a heat balance analysis to calculate the kinetic heating and runback effects. The authors have reported good agreement between predicted and experimentally obtained ice shapes, tem- perature distributions, and icing threshold...

Miller, Thomas Lloyd

1984-01-01T23:59:59.000Z

334

Argonne Lab Director Peter Littlewood accepts Ice Bucket Challenge...  

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

Argonne Lab Director Peter Littlewood accepts Ice Bucket Challenge Share Browse By - Any - Energy -Energy efficiency --Vehicles ---Alternative fuels ---Automotive engineering...

335

Optimal Control of Harvesting Ice Thermal Storage Systems  

E-Print Network (OSTI)

for optimal control of a harvesting ice storage system. A simplified procedure is used to develop 24 hour load data. Example installations will be shown....

Knebel, D. E.

1988-01-01T23:59:59.000Z

336

Heterogeneous ice nucleation and water uptake by field-collected...  

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

properties through heterogeneous nucleation is not well understood. Heterogeneous ice nucleation and water uptake by ambient particles collected from urban environments in...

337

Ice structure monitoring with an optical fiber sensing system  

Science Journals Connector (OSTI)

Ice has been used as an effective and economical material for constructions of roads and platforms in cold regions. However, the practical applications of this brittle material are limited by the fact that ice structures can suddenly crack due to low tensile strength, be crushed due to excessive compression, melt and become soften as temperature elevates. In this paper, an early warning system is proposed to monitor the strain state and damage characteristic of ice structures. Firstly, both fiber Bragg grating (FBG) and Brillouin optical time domain analysis/reflectometry (BOTDA/R) sensors were installed in an ice block and an ice beam to understand their axial and flexural behaviors under a concentrated load. Secondly, the solution for strain state and damage process of ice structures was derived analytically under test conditions. Finally, an outdoor ice road test bed was built and continuously monitored for 34h to validate the early warning system and understand the early stage behavior of ice structures. The experimental results agreed well with their corresponding theoretical predictions. The early warning system with optical sensors is effective and practical for long-term monitoring for ice structures.

Zhi Zhou; Minghua Huang; Jianping He; Genda Chen; Jinping Ou

2010-01-01T23:59:59.000Z

338

ARM-UAV TWP-ICE Activities and Data  

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

instrument operational status, data availability and daily flight details for the ARM-UAV Proteus payload flown during the TWP-ICE experiment are presented. Data was also...

339

Covered Product Category: Air-Cooled Ice Machines  

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

The Federal Energy Management Program (FEMP) provides acquisition guidance for air-cooled ice machines, which are covered by the ENERGY STAR program.

340

IceCube: A Cubic Kilometer Radiation Detector  

SciTech Connect

IceCube is a 1 km{sup 3} neutrino detector now being built at the Amudsen-Scott South Pole Station. It consists of 4800 Digital Optical Modules (DOMs) which detect Cherenkov radiation from the charged particles produced in neutrino interactions. IceCube will observe astrophysical neutrinos with energies above about 100 GeV. IceCube will be able to separate {nu}{sub {mu}}, {nu}{sub t}, and {nu}{sub {tau}} interactions because of their different topologies. IceCube construction is currently 50% complete.

IceCube Collaboration; Klein, Spencer R; Klein, S.R.

2008-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Sandia National Laboratories: Ice-Sheet Simulation Code Matures...  

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

and Antarctic Ice Sheets, with particular attention to their contributions to global sea-level rise. Our recent highlight is the successful completion of a controlled mesh...

342

Team advances understanding of the Greenland Ice Sheet's meltwater...  

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

for Greenland in the future, but its impact on ice sheet flux and associated sea level rise is uncertain: direct observations of the subglacial drainage system are lacking...

343

Reducing uncertainty in high-resolution sea ice models.  

SciTech Connect

Arctic sea ice is an important component of the global climate system, reflecting a significant amount of solar radiation, insulating the ocean from the atmosphere and influencing ocean circulation by modifying the salinity of the upper ocean. The thickness and extent of Arctic sea ice have shown a significant decline in recent decades with implications for global climate as well as regional geopolitics. Increasing interest in exploration as well as climate feedback effects make predictive mathematical modeling of sea ice a task of tremendous practical import. Satellite data obtained over the last few decades have provided a wealth of information on sea ice motion and deformation. The data clearly show that ice deformation is focused along narrow linear features and this type of deformation is not well-represented in existing models. To improve sea ice dynamics we have incorporated an anisotropic rheology into the Los Alamos National Laboratory global sea ice model, CICE. Sensitivity analyses were performed using the Design Analysis Kit for Optimization and Terascale Applications (DAKOTA) to determine the impact of material parameters on sea ice response functions. Two material strength parameters that exhibited the most significant impact on responses were further analyzed to evaluate their influence on quantitative comparisons between model output and data. The sensitivity analysis along with ten year model runs indicate that while the anisotropic rheology provides some benefit in velocity predictions, additional improvements are required to make this material model a viable alternative for global sea ice simulations.

Peterson, Kara J.; Bochev, Pavel Blagoveston

2013-07-01T23:59:59.000Z

344

Economic Removal of Nitrogen from LNG  

Science Journals Connector (OSTI)

In recent years, economic factors have made transportation of natural gas in the form of LNG increasingly attractive. Shipping costs and heating value ... control necessitate specifications limiting the nitrogen ...

J-P. G. Jacks; J. C. McMillan

1978-01-01T23:59:59.000Z

345

Nitrogen fixation by a methanogenic archaebacterium  

Science Journals Connector (OSTI)

... fixing microbial systems able to convert wastes which are low in combined nitrogen, including lignocellulose biomass substrates, industrial wastes and food process wastes such as ... substrates, industrial wastes and food process wastes such as whey, to CH4.

Patti A. Murray; Stephen H. Zinder

1984-11-15T23:59:59.000Z

346

Nitrogen oxide delivery systems for biological media  

E-Print Network (OSTI)

Elevated levels of nitric oxide (NO) in vivo are associated with a variety of cellular modifications thought to be mutagenic or carcinogenic. These processes are likely mediated by reactive nitrogen species (RNS) such as ...

Skinn, Brian Thomas

2012-01-01T23:59:59.000Z

347

Liquid heat capacity lasers  

DOE Patents (OSTI)

The heat capacity laser concept is extended to systems in which the heat capacity lasing media is a liquid. The laser active liquid is circulated from a reservoir (where the bulk of the media and hence waste heat resides) through a channel so configured for both optical pumping of the media for gain and for light amplification from the resulting gain.

Comaskey, Brian J. (Walnut Creek, CA); Scheibner, Karl F. (Tracy, CA); Ault, Earl R. (Livermore, CA)

2007-05-01T23:59:59.000Z

348

Carbon monoxide absorbing liquid  

SciTech Connect

The present disclosure is directed to a carbon monoxide absorbing liquid containing a cuprous ion, hydrochloric acid and titanum trichloride. Titanium trichloride is effective in increasing the carbon monoxide absorption quantity. Furthermore, titanium trichloride remarkably increases the oxygen resistance. Therefore, this absorbing liquid can be used continuously and for a long time.

Arikawa, Y.; Horigome, S.; Kanehori, K.; Katsumoto, M.

1981-07-07T23:59:59.000Z

349

Precision liquid level sensor  

DOE Patents (OSTI)

A precision liquid level sensor utilizes a balanced R. F. bridge, each arm including an air dielectric line. Changes in liquid level along one air dielectric line imbalance the bridge and create a voltage which is directly measurable across the bridge.

Field, Michael E. (Albuquerque, NM); Sullivan, William H. (Albuquerque, NM)

1985-01-01T23:59:59.000Z

350

Nitrogen Removal From Low Quality Natural Gas  

SciTech Connect

Natural gas provides more than one-fifth of all the primary energy used in the United States. It is especially important in the residential sector, where it supplies nearly half of all the energy consumed in U.S. homes. However, significant quantities of natural gas cannot be produced economically because its quality is too low to enter the pipeline transportation system without some type of processing, other than dehydration, to remove the undesired gas fraction. Such low-quality natural gas (LQNG) contains significant concentration or quantities of gas other than methane. These non- hydrocarbons are predominantly nitrogen, carbon dioxide, and hydrogen sulfide, but may also include other gaseous components. The nitrogen concentrations usually exceeds 4%. Nitrogen rejection is presently an expensive operation which can present uneconomic scenarios in the potential development of natural gas fields containing high nitrogen concentrations. The most reliable and widely used process for nitrogen rejection from natural gas consists of liquefying the feed stream using temperatures in the order of - 300{degrees}F and separating the nitrogen via fractionation. In order to reduce the gas temperature to this level, the gas is compressed, cooled by mullet-stream heat exchangers, and expanded to low pressure. Significant energy for compression and expensive materials of construction are required. Water and carbon dioxide concentrations must be reduced to levels required to prevent freezing. SRI`s proposed research involves screening new nitrogen selective absorbents and developing a more cost effective nitrogen removal process from natural gas using those compounds. The long-term objective of this project is to determine the technical and economical feasibility of a N{sub 2}2 removal concept based on complexation of molecular N{sub 2} with novel complexing agents. Successful development of a selective, reversible, and stable reagent with an appropriate combination of capacity and N{sub 2} absorption/desorption characteristics will allow selective separation of N{sub 2} from LQNG.

Alvarado, D.B.; Asaro, M.F.; Bomben, J.L.; Damle, A.S.; Bhown, A.S.

1997-10-01T23:59:59.000Z

351

Liquid Fuels Market Module  

U.S. Energy Information Administration (EIA) Indexed Site

Liquid Fuels Market Module Liquid Fuels Market Module This page inTenTionally lefT blank 145 U.S. Energy Information Administration | Assumptions to the Annual Energy Outlook 2013 Liquid Fuels Market Module The NEMS Liquid Fuels Market Module (LFMM) projects petroleum product prices and sources of supply for meeting petroleum product demand. The sources of supply include crude oil (both domestic and imported), petroleum product imports, unfinished oil imports, other refinery inputs (including alcohols, ethers, esters, corn, biomass, and coal), natural gas plant liquids production, and refinery processing gain. In addition, the LFMM projects capacity expansion and fuel consumption at domestic refineries. The LFMM contains a linear programming (LP) representation of U.S. petroleum refining

352

SHORT COMMUNICATION Nitrogen recovery from shrimp pond efuent  

E-Print Network (OSTI)

the water as ammonia (total ammonia nitrogen, TAN), through either direct excretion by animals or ammoni

Lorenzen, Kai

353

A new ice thickness and bedrock data set for the Greenland ice sheet. R.L. Layberry, J.L. Bamber,  

E-Print Network (OSTI)

combined with data collected by the Technical University of Denmark in the 1970's to produce a new iceA new ice thickness and bedrock data set for the Greenland ice sheet. R.L. Layberry, J.L. Bamber of Kansas, Lawrence, KS 66045, 785/864-2700, U.S. Abstract - Ice thickness data collected between 1993

Kansas, University of

354

Integrated tephrochronology of the West Antarctic region-Implications for a potential tephra record in the West Antarctic Ice Sheet (WAIS) Divide Ice Core  

E-Print Network (OSTI)

(tephra) and aerosols , produced during major explosive eruptions. Tephra layers in ice cores can provide record in the West Antarctic Ice Sheet (WAIS) Divide Ice Core N.W. Dunbar,1 W.C. McIntosh,1 A.V. Kurbatov@albion.edu) Ice cores from polar regions, in addition to being a climate archives, also capture volcanic particles

Dunbar, Nelia W.

355

Modeling the High-Frequency Component of Arctic Sea Ice Drift and Deformation  

Science Journals Connector (OSTI)

Buoy observations of sea ice drift show that sea ice motion and deformation contain substantial high-frequency variability at subdaily timescales. However, numerical simulations of the sea ice dynamics normally do not include processes on such ...

Petra Heil; William D. Hibler III

2002-11-01T23:59:59.000Z

356

E-Print Network 3.0 - aircraft icing training Sample Search Results  

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

Summary: effects on aircraft performance. Although anti-icing devices such as de-icing boots and heating strips... help, ice accretions can still build up and affect the aircraft...

357

Fractionation of Dissolved Solutes and Chromophoric Dissolved Organic Matter During Experimental Sea Ice Formation.  

E-Print Network (OSTI)

In the past decade there has been an overall decrease in Arctic Ocean sea ice cover. Changes to the ice cover have important consequences for organic carbon cycling, especially over the continental shelves. When sea ice is formed, dissolved organic...

Smith, Stephanie 1990-

2012-04-16T23:59:59.000Z

358

Dynamics of ice shelf rift propagation and iceberg calving inferred from geodetic and seismic observations  

E-Print Network (OSTI)

ice at the base of the ice shelf could produce a thicknessthat may produce larger amounts of marine ice near one riftice shelf com- bined with large Antarctic storm systems can produce

Bassis, Jeremy N.

2007-01-01T23:59:59.000Z

359

Synthesis of multiwall carbon nanotubes by electric arc discharge in liquid environments  

Science Journals Connector (OSTI)

This work reports the experimental results from the production of multiwall carbon nanotubes (MWCN) synthesized by an electric arc discharge performed in liquid environments between pure graphite electrodes. Both liquid nitrogen and deionised water were suitable for a successful synthesis of this form of carbon aggregation. We report a successful synthesis of MWCN by arc discharge submerged in deionised water. Electron microscopy observations of both the reaction products and the surface of the as-synthesized raw material showed the presence of structural degradation of the MWCN, which probably operates after their growth at the cathode. The degradation is tentatively ascribed to a combination of overheating and high current density experienced by the as-synthesized MWNT, which can be caused by the loose structure of the as-deposited material. The damage appeared to be less severe in water environments, probably owing to the better cooling capacity of water relative to liquid nitrogen.

Marco Vittori Antisari; Renzo Marazzi; Radenka Krsmanovic

2003-01-01T23:59:59.000Z

360

A New Approach for Exploring Ice Sheets and Sub-Ice Geology  

E-Print Network (OSTI)

-velocity gradient in the surface layer. The boreholes are drilled by different techniques, requiring considerable in controlling ice dynam- ics and is largely determined by the pres- ence of water and/or sediments underneath Geological Drilling (ANDRILL)). Nev- ertheless, the available literature demon- strates that seismic studies

Kristoffersen, Yngve

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

The Little Ice Age as Recorded in the Stratigraphy of the Tropical Quelccaya Ice Cap  

Science Journals Connector (OSTI)

...1500-YEAR RECORD OF TROPICAL PRECIPITATION IN ICE CORES FROM THE...values associated with winter snowfall (5). Sum-mer...During the eruptive phase, 19 February to 6 March...than 80% ofthe annual precipitation falls in the wet season...analysis, K. Doddroe for typing and R. Tope for the...

L. G. THOMPSON; E. MOSLEY-THOMPSON; W. DANSGAARD; P. M. GROOTES

1986-10-17T23:59:59.000Z

362

Nitrogen is a natural and necessary part of every healthy ecosystem, but too much nitrogen in our rivers,  

E-Print Network (OSTI)

), sewage treatment plants, and animal ma- nure. Once in water, nitrogen can change in chemical form

Torgersen, Christian

363

Air Liquide - Biogas & Fuel Cells  

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

Liquide - Biogas & Fuel Cells Hydrogen Energy Biogas Upgrading Technology 12 June 2012 Charlie.Anderson@airliquide.com 2 Air Liquide, world leader in gases for industry,...

364

Sandia National Laboratories: ionic liquid  

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

liquid Biofuels Blend Right In: Researchers Show Ionic Liquids Effective for Pretreating Mixed Blends of Biofuel Feedstocks On February 26, 2013, in Biofuels, Biomass, Energy,...

365

Probing leptoquark production at IceCube  

Science Journals Connector (OSTI)

We emphasize the inelasticity distribution of events detected at the IceCube neutrino telescope as an important tool for revealing new physics. This is possible because the unique energy resolution at this facility allows to separately assign the energy fractions for emergent muons and taus in neutrino interactions. As a particular example, we explore the possibility of probing second and third generation leptoquark parameter space (coupling and mass). We show that production of leptoquarks with masses ?250??GeV and diagonal generation couplings of O(1) can be directly tested if the cosmic neutrino flux is at the Waxman-Bahcall level.

Luis A. Anchordoqui; Carlos A. Garca Canal; Haim Goldberg; Daniel Gomez Dumm; Francis Halzen

2006-12-29T23:59:59.000Z

366

Liquid sampling system  

DOE Patents (OSTI)

A conduit extends from a reservoir through a sampling station and back to the reservoir in a closed loop. A jet ejector in the conduit establishes suction for withdrawing liquid from the reservoir. The conduit has a self-healing septum therein upstream of the jet ejector for receiving one end of a double-ended cannula, the other end of which is received in a serum bottle for sample collection. Gas is introduced into the conduit at a gas bleed between the sample collection bottle and the reservoir. The jet ejector evacuates gas from the conduit and the bottle and aspirates a column of liquid from the reservoir at a high rate. When the withdrawn liquid reaches the jet ejector the rate of flow therethrough reduces substantially and the gas bleed increases the pressure in the conduit for driving liquid into the sample bottle, the gas bleed forming a column of gas behind the withdrawn liquid column and interrupting the withdrawal of liquid from the reservoir. In the case of hazardous and toxic liquids, the sample bottle and the jet ejector may be isolated from the reservoir and may be further isolated from a control station containing remote manipulation means for the sample bottle and control valves for the jet ejector and gas bleed. 5 figs.

Larson, L.L.

1984-09-17T23:59:59.000Z

367

Liquid sampling system  

DOE Patents (OSTI)

A conduit extends from a reservoir through a sampling station and back to the reservoir in a closed loop. A jet ejector in the conduit establishes suction for withdrawing liquid from the reservoir. The conduit has a self-healing septum therein upstream of the jet ejector for receiving one end of a double-ended cannula, the other end of which is received in a serum bottle for sample collection. Gas is introduced into the conduit at a gas bleed between the sample collection bottle and the reservoir. The jet ejector evacuates gas from the conduit and the bottle and aspirates a column of liquid from the reservoir at a high rate. When the withdrawn liquid reaches the jet ejector the rate of flow therethrough reduces substantially and the gas bleed increases the pressure in the conduit for driving liquid into the sample bottle, the gas bleed forming a column of gas behind the withdrawn liquid column and interrupting the withdrawal of liquid from the reservoir. In the case of hazardous and toxic liquids, the sample bottle and the jet ejector may be isolated from the reservoir and may be further isolated from a control station containing remote manipulation means for the sample bottle and control valves for the jet ejector and gas bleed.

Larson, Loren L. (Idaho Falls, ID)

1987-01-01T23:59:59.000Z

368

The first Greenland ice core record of methanesulfonate and sulfate over a full glacial cycle  

E-Print Network (OSTI)

sulf,te in the Dye 3 and Camp Century, Greenland ice cores,in both the Dye 3 and Camp Century deep ice cores [Herron

Hansson, Margareta E; Saltzman, Eric S

1993-01-01T23:59:59.000Z

369

Experimental Investigation of Energy Losses due to Icing of a Wind Turbine  

Science Journals Connector (OSTI)

Ice accretion and irregular shedding cause many potential problems during turbine operation. For example, icing causes large load imbalances; creates excessive turbine vibration; can change the natural frequen...

Xin Wang; Eric L. Bibeau

2007-01-01T23:59:59.000Z

370

Investigation of how Insulation affects the pipe system in the soil for ice rinks.  

E-Print Network (OSTI)

?? In Sweden, ice rinks are one of the largest energy consumers in the public building sector, requiring, each ice rink, about 1050 MWh/year, from (more)

Marco Estruc, Ignacio

2014-01-01T23:59:59.000Z

371

Liquid Phase Heating Systems  

E-Print Network (OSTI)

saturation pressure is ju'st under 278 psig. To this, pump head, pump NPSH and static head due to elevated piping must l be added to arrive at total pressure in a steam cushioned HTW system. Nitrogen cushioned systems are more common, and expansion...

Mordt, E. H.

1979-01-01T23:59:59.000Z

372

Solids precipitation and polymerization of asphaltenes in coal-derived liquids  

DOE Patents (OSTI)

The precipitation and removal of particulate solids from coal-derived liquids by adding a process-derived anti-solvent liquid fraction and continuing the precipitation process at a temperature above the melting point of the mixed liquids for sufficient time to allow the asphaltenes to polymerize and solids to settle at atmospheric pressure conditions. The resulting clarified light hydrocarbon overflow liquid contains less than about 0.02 W % ash and is suitable as turbine fuel or as boiler fuel for burning without particulate emission control equipment. An underflow liquid fraction containing less than about 0.1 W % solids along with low sulfur and nitrogen concentrations is suitable as a boiler fuel with emission control equipment.

Kydd, Paul H. (Lawrenceville, NJ)

1984-01-01T23:59:59.000Z

373

Liquid-level detector  

DOE Patents (OSTI)

Aliquid level sensor is described which has a pair of upright conductors spaced by an insulator defining a first high resistance path between the conductors. An electrically conductive path is interposed between the upright conductors at a discrete location at which liquid level is to be measured. It includes a liquid accessible gap of a dimension such that the electrical resistance across the conductor when the gap is filled with the liquid is detectably less than when the gap is emptied. The conductor might also be physically altered by temperature changes to serve also as an indicator of elevated temperature.

Not Available

1981-01-29T23:59:59.000Z

374

Liquid metal electric pump  

DOE Patents (OSTI)

An electrical pump for pumping liquid metals to high pressures in high temperature environments without the use of magnets or moving mechanical parts. The pump employs a non-porous solid electrolyte membrane, typically ceramic, specific to the liquid metal to be pumped. A DC voltage is applied across the thickness of the membrane causing ions to form and enter the membrane on the electrically positive surface, with the ions being neutralized on the opposite surface. This action provides pumping of the liquid metal from one side of the non-porous solid electrolyte membrane to the other. 3 figs.

Abbin, J.P.; Andraka, C.E.; Lukens, L.L.; Moreno, J.B.

1992-01-14T23:59:59.000Z

375

ELECTRON IRRADIATION OF KUIPER BELT SURFACE ICES: TERNARY N{sub 2}-CH{sub 4}-CO MIXTURES AS A CASE STUDY  

SciTech Connect

The space weathering of icy Kuiper Belt Objects was investigated in this case study by exposing methane (CH{sub 4}) and carbon monoxide (CO) doped nitrogen (N{sub 2}) ices at 10 K to ionizing radiation in the form of energetic electrons. Online and in situ Fourier transform infrared spectroscopy was utilized to monitor the radiation-induced chemical processing of these ices. Along with isocyanic acid (HNCO), the products could be mainly derived from those formed in irradiated binary ices of the N{sub 2}-CH{sub 4} and CO-CH{sub 4} systems: nitrogen-bearing products were found in the form of hydrogen cyanide (HCN), hydrogen isocyanide (HNC), diazomethane (CH{sub 2}N{sub 2}), and its radical fragment (HCN{sub 2}); oxygen-bearing products were of acetaldehyde (CH{sub 3}CHO), formyl radical (HCO), and formaldehyde (H{sub 2}CO). As in the pure ices, the methyl radical (CH{sub 3}) and ethane (C{sub 2}H{sub 6}) were also detected, as were carbon dioxide (CO{sub 2}) and the azide radical (N{sub 3}). Based on the temporal evolution of the newly formed products, kinetic reaction schemes were then developed to fit the temporal profiles of the newly formed species, resulting in numerical sets of rate constants. The current study highlights important constraints on the preferential formation of isocyanic acid (HNCO) over hydrogen cyanide (HCN) and hydrogen isocyanide (HNC), thus guiding the astrobiological and chemical evolution of those distant bodies.

Kim, Y. S.; Kaiser, R. I., E-mail: ralfk@hawaii.edu [Department of Chemistry, University of Hawaii at Manoa, Honolulu, HI 96822 (United States)

2012-10-10T23:59:59.000Z

376

Multispectral imaging contributions to global land ice measurements from space  

E-Print Network (OSTI)

, Germany j National Snow and Ice Data Center, University of Colorado, 449 UCB, Boulder, CO 80309, USA k development by GLIMS is geared toward mapping clean- ice and debris-covered glaciers; terrain classification are compatible with and expanded from those of the World Glacier Inventory (WGI). These technology efforts

Kääb, Andreas

377

IceCube Project Monthly Report September 2005  

E-Print Network (OSTI)

IceCube Project Monthly Report September 2005 Accomplishments All of the IceCube Digital Optical the long- term project goals of 90% first pass yield and 95% ultimate yield. The additional data handling at the Pole and one at McMurdo. The drilling procedures are nearing completion. A final review and sign

Saffman, Mark

378

Gravitational Separation of Gases and Isotopes in Polar Ice Caps  

Science Journals Connector (OSTI)

...reported that 02 trapped in 2000-year-old ice from Camp Century, Green-land, has an 180/160 enrichment given by...values for 02 in 6,100-and 20,000-year-old Camp Century ice (1), and noting that mean seawater was enriched...

H. Craig; Y. Horibe; T. Sowers

1988-12-23T23:59:59.000Z

379

Increase of Atmospheric Methane Recorded in Antarctic Ice Core  

Science Journals Connector (OSTI)

...obtained by Rasmussen and Khalil with ice samples from Camp Century (77011'N, 61009'W), Crete (71 07'N, 37 19'W...however, this difference is 130 years for ice from Camp Century, 200 years for Crete, and 240 years for Byrd Station...

B. STAUFFER; G. FISCHER; A. NEFTEL; H. OESCHGER

1985-09-27T23:59:59.000Z

380

Floating Glacial Ice Caps in the Arctic Ocean  

Science Journals Connector (OSTI)

...obtained from isotopic studies of the Camp Century ice core. The second is based...obtained from isotopic studies of the Camp Century ice core. The second is based...Arctic Ocean Arctic region benthonic Camp Century Cenozoic cores deep-sea evidence...

Wallace S. Broecker

1975-06-13T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Proton ordering in tetragonal and monoclinic H2O ice  

E-Print Network (OSTI)

H2O ice remains one of the most enigmatic materials as its phase diagram reveals up to sixteen solid phases. While the crystal structure of these phases has been determined, the phase boundaries and mechanisms of formation of the proton-ordered phases remain unclear. From high precision measurements of the complex dielectric constant, we probe directly the degree of ordering of the protons in H2O tetragonal ice III and monoclinic ice V down to 80 K. A broadened first-order phase transition is found to occur near 202 K we attribute to a quenched disorder of the protons which causes a continuous disordering of the protons during cooling and metastable behavior. At 126 K the protons in ice III become fully ordered, and for the case of ice V becoming fully ordered at 113 K forming ice XIII. Two triple points are proposed to exist: one at 0.35 GPa and 126 K where ices III, IX and V coexist; and another at 0.35 GPa and 113 K where ices V, IX and XIII coexist. Our findings unravel the underlying mechanism driving th...

Yen, Fei; Berlie, Adam; Liu, Xiaodi; Goncharov, Alexander F

2015-01-01T23:59:59.000Z

382

Solvent Selection Use dry ice/isopropanol for cooling baths  

E-Print Network (OSTI)

Solvent Selection Use dry ice/isopropanol for cooling baths Reaches essentially the same temperature as dry ice/acetone (-77°C vs. -78°C), but the lower volatility of isopropanol minimizes vapor a closed-loop cooling system for condensers Closed-loop cooling systems eliminate wastewater and accidental

Chan, Hue Sun

383

Trigonal ice crystals in Earths atmosphere  

Science Journals Connector (OSTI)

We are all familiar with the hexagonal shape of snow and ice crystals, and it is well established that their six-fold symmetry is derived from the arrangement of water molecules in a hexagonal crystal structure. However, atmospheric ice crystals with only ...

Benjamin J. Murray; Christoph G. Salzmann; Andrew J. Heymsfield; Steven Dobbie; Ryan R. Neely--III; Christopher J. Cox

384

IceCube Project Monthly Report -April 2010 Accomplishments  

E-Print Network (OSTI)

1 IceCube Project Monthly Report - April 2010 Accomplishments · The IceCube Software Water Drill equipment (http://www.icecube.wisc.edu/disposition/index.php) and the site was circulated at Uppsala University are using Deep Core DOMs as flashers and receivers for low-intensity flasher runs

Saffman, Mark

385

ENERGY BASED ICE COLLISION FORCES Claude Daley1  

E-Print Network (OSTI)

ENERGY BASED ICE COLLISION FORCES Claude Daley1 1 Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1C 3X5 ABSTRACT Ice collision forces can be determined by energy considerations. A variety of interaction geometry cases are considered. The indentation energy functions for eight different

Daley, Claude

386

ENERGY BASED ICE COLLISION FORCES Claude Daley1  

E-Print Network (OSTI)

1 ENERGY BASED ICE COLLISION FORCES Claude Daley1 1 Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1C 3X5 ABSTRACT Ice collision forces can be determined by energy considerations. A variety of interaction geometry cases are considered. The indentation energy functions for eight different

Daley, Claude

387

POLAR SEA-ICE CLASSIFICATION USING ENHANCED RESOLUTION NSCAT DATA  

E-Print Network (OSTI)

POLAR SEA-ICE CLASSIFICATION USING ENHANCED RESOLUTION NSCAT DATA Q. P. Remund and D. G. Long of the scatterometer image reconstruction with filter (SIRF) algorithm. SIRF produces images of A and B where A is U is shown to have high correlation with the NSIDC SSM/I derived multiyear ice maps. INTRODUCTION Polar sea

Long, David G.

388

Ultrafast photochemistry of methyl hydroperoxide on ice particles  

E-Print Network (OSTI)

Ultrafast photochemistry of methyl hydroperoxide on ice particles M. A. Kambouresa , S. AOOH, on water clusters produces a surprisingly wide range of products on a subpicosecond time scale | photodissociation Photoinduced processes at surfaces of water or ice are of interest in atmospheric chemistry

Nizkorodov, Sergey

389

POLLEN DISPERSAL AND DEPOSITION ON THE QUELCCAYA ICE CAp, PERU  

E-Print Network (OSTI)

POLLEN DISPERSAL AND DEPOSITION ON THE QUELCCAYA ICE CAp, PERU Carl A. Reese and Kam-biu Liu: The relatively young science of tropical ice-core palynology has proven effective in the study of paleoenvironments by its ability to produce long-term and high- resolution paleoclimatic data. However, no studies

Liu, Kam-biu

390

Effectsof ice-crystal structure on halo formation: cirrus cloud  

E-Print Network (OSTI)

Effectsof ice-crystal structure on halo formation: cirrus cloud experimental and ray campaign, four 220halo-producing cirrus clouds were studied jointly from a ground- based polarization lidar of the aircraft, which collecteda total of 84slides byimpaction, preserving the ice crystals for later microscopic

Takano, Yoshihide

391

Has the ice man arrived? Tact on the Internet  

E-Print Network (OSTI)

Has the ice man arrived? Tact on the Internet Jonathan Grudin, UC Irvine and Microsoft Research. Eugene O'Neill's play The Ice Man Cometh outlines a series of calamities that occur when his characters the graded corrections via e- mail. The students produced a counter- proposal: After grading an exercise

Hearst, Marti

392

Sea Ice Enhancements to Polar WRF* Keith M. Hines1**  

E-Print Network (OSTI)

covering Europe and the Arctic Ocean demonstrate remote impacts of Arctic sea ice thickness on18 midSea Ice Enhancements to Polar WRF* Keith M. Hines1** , David H. Bromwich,1,2 , Lesheng Bai1 model (Polar WRF), a polar-optimized version of2 WRF, is developed by and available to the community

Howat, Ian M.

393

Optimization of Ice Thermal Storage Systems Design for HVAC Systems  

E-Print Network (OSTI)

Ice thermal storage is promising technology to reduce energy costs by shifting the cooling cost from on-peak to off-peak periods. The paper discusses the optimal design of ice thermal storage and its impact on energy consumption, demand, and total...

Nassif, N.; Hall, C.; Freelnad, D.

2013-01-01T23:59:59.000Z

394

IceCube Collaboration Contributions to ARENA 2008  

E-Print Network (OSTI)

Contributions of the IceCube Collaboration to the 3rd International Workshop on Acoustic and Radio EeV Neutrino detection Activities (ARENA 2008). The conference was held at Roma University "Sapienza," June 25-27, 2008, in Rome, Italy. This is an html index of the IceCube Collaboration contributions, with clickable links to the individual papers.

IceCube Collaboration

2008-11-15T23:59:59.000Z

395

Nitrogen Deposition in the Southern High Plains Nitrogen is necessary for life on earth, but  

E-Print Network (OSTI)

to the environment. Dinitrogen contains two nitrogen atoms held together by one of nature's strongest chemical bonds in the environment include ammonia (NH3) and its related compounds, amines (NH2), nitrite (NO2) and nitrate (NO3 responsible for producing 500 million tons of nitrogen fertilizer each year, combines dinitro- gen

Mukhtar, Saqib

396

Fire in the Ice, Spring 2005  

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

Marine Multi-Component Marine Multi-Component Seismology ............................ 1 Discovery of Possible Gas Hydrate Features ................... 5 Monitoring Station Update ..... 8 Announcements .................. 10 * Research Cruise Completed * Advisory Committee Meeting * Hot Ice Project Reports * Norway ICGH Meeting * Simulator Publicly Released * TOUGH-Fx/HYDRATE V 2.4 * AAPG Committee to Meet Spotlight on Research ........ 12 Scott Dallimore CONTACT POINT Ray Boswell National Energy Technology Laboratory (304) 285-4541 (304) 285-4216 fax Ray.Boswell@netl.doe.gov The Fire in the Ice Newsletter is also available online at our website www.netl.doe.gov/scngo/ NaturalGas/hydrates/index.html T H E N A T I O N A L E N E R G Y T E C H N O L O G Y L A B O R A T O R Y M E T H A N E H Y D R A T E N E W S L E T T E R Vol. 5, Iss. 2 ○ ○ ○ ○ ○

397

Magnetic charge crystals imaged in artificial spin ice  

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

Magnetic charge crystals imaged in artificial spin ice Magnetic charge crystals imaged in artificial spin ice Magnetic charge crystals imaged in artificial spin ice Potential data storage and computational advances could follow August 27, 2013 Potential data storage and computational advances could follow A 3-D depiction of the honeycomb artificial spin ice topography after the annealing and cooling protocols. The light and dark colors represent the north and south magnetic poles of the islands. Image by Ian Gilbert, U. of I. Department of Physics and Frederick Seitz Materials Research Laboratory Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email Siv Schwink U. Illinois (217) 300-2201 Email "The emergence of magnetic monopoles in spin ice systems is a particular case of what physicists call fractionalization, or deconfinement of

398

Ground-State Structures of Ice at High-Pressures  

E-Print Network (OSTI)

\\textit{Ab initio} random structure searching based on density functional theory is used to determine the ground-state structures of ice at high pressures. Including estimates of lattice zero-point energies, ice is found to adopt three novel crystal phases. The underlying sub-lattice of O atoms remains similar among them, and the transitions can be characterized by reorganizations of the hydrogen bonds. The symmetric hydrogen bonds of ice X and $Pbcm$ are initially lost as ice transforms to structures with symmetries $Pmc2_1$ (800 - 950 GPa) and $P2_1$ (1.17 TPa), but they are eventually regained at 5.62 TPa in a layered structure $C2/m$. The $P2_1 \\rightarrow C2/m$ transformation also marks the insulator-to-metal transition in ice, which occurs at a significantly higher pressure than recently predicted.

McMahon, Jeffrey M

2011-01-01T23:59:59.000Z

399

Effect of Nitrogen Additives on Flame Retardant Action of Tributyl Phosphate: Phosphorus Nitrogen Synergism  

SciTech Connect

The effect of nitrogen additives like urea, guanidine carbonate and melamine formaldehyde on the flame retardant efficacy of tributyl phosphate (TBP) has been investigated. From the LOI tests on treated cotton it is clear that the nitrogen additives have synergistic action. Estimation of activation energy of decomposition of treated cotton indicated that nitrogen additives enhance the thermal stability during the burning process. SEM pictures of chars formed after LOI test showed the formation of protective polymeric coating on the surface. The surface of chars formed were evaluated using FTIR-ATR and XPS analysis which showed that the coating was composed of Phosphorus-Nitrogen-Oxygen containing species. Formation of this coating during the burning process could lead to the synergistic interaction of phosphorus and nitrogen. Based on the experimental data we have further proposed several reaction mechanisms which could contribute to synergistic action and formation of protective coating on the surface of char.

Gaan, Sabyasachi; Sun, Gang; Hutches, Katherine; Engelhard, Mark H.

2008-01-01T23:59:59.000Z

400

Renewable Liquid Fuels Reforming  

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

The Program anticipates that distributed reforming of biomass-derived liquid fuels could be commercial during the transition to hydrogen and used in the mid- and long-term time frames.

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Ice in Clouds ExperimentLayer Clouds. Part I: Ice Growth Rates Derived from Lenticular Wave Cloud Penetrations  

Science Journals Connector (OSTI)

Lenticular wave clouds are used as a natural laboratory to estimate the linear and mass growth rates of ice particles at temperatures from ?20 to ?32C and to characterize the apparent rate of ice nucleation at water saturation at a nearly ...

Andrew J. Heymsfield; Paul R. Field; Matt Bailey; Dave Rogers; Jeffrey Stith; Cynthia Twohy; Zhien Wang; Samuel Haimov

2011-11-01T23:59:59.000Z

402

Estimating the Sea Ice Compressive Strength from Satellite-Derived Sea Ice Drift and NCEP Reanalysis Data  

Science Journals Connector (OSTI)

Satellite-derived sea ice drift maps and sea level pressure from reanalysis data are used to infer upper and lower bounds on the large-scale compressive strength of Arctic sea ice. To this end, the two datasets are searched for special situations ...

L-B. Tremblay; M. Hakakian

2006-11-01T23:59:59.000Z

403

Breaking the ice: de-icing power transmission lines with high-frequency, high-voltage excitation  

E-Print Network (OSTI)

Breaking the ice: de-icing power transmission lines with high-frequency, high-voltage excitation of this work in other works must be obtained from the IEEE. #12;CING OF POWER TRANSMISSION lines during winter that applies 33-kV, 100-kHz power. TheoverallsystemisillustratedinFigure1.Itcouldbede- ployed in two different

404

THE c2d SPITZER SPECTROSCOPIC SURVEY OF ICES AROUND LOW-MASS YOUNG STELLAR OBJECTS. IV. NH{sub 3} AND CH{sub 3}OH  

SciTech Connect

NH{sub 3} and CH{sub 3}OH are key molecules in astrochemical networks leading to the formation of more complex N- and O-bearing molecules, such as CH{sub 3}CN and CH{sub 3}OCH{sub 3}. Despite a number of recent studies, little is known about their abundances in the solid state. This is particularly the case for low-mass protostars, for which only the launch of the Spitzer Space Telescope has permitted high-sensitivity observations of the ices around these objects. In this work, we investigate the {approx}8-10 {mu}m region in the Spitzer IRS (InfraRed Spectrograph) spectra of 41 low-mass young stellar objects (YSOs). These data are part of a survey of interstellar ices in a sample of low-mass YSOs studied in earlier papers in this series. We used both an empirical and a local continuum method to correct for the contribution from the 10 {mu}m silicate absorption in the recorded spectra. In addition, we conducted a systematic laboratory study of NH{sub 3}- and CH{sub 3}OH-containing ices to help interpret the astronomical spectra. We clearly detect a feature at {approx}9 {mu}m in 24 low-mass YSOs. Within the uncertainty in continuum determination, we identify this feature with the NH{sub 3} {nu}{sub 2} umbrella mode and derive abundances with respect to water between {approx}2% and 15%. Simultaneously, we also revisited the case of CH{sub 3}OH ice by studying the {nu}{sub 4} C-O stretch mode of this molecule at {approx}9.7 {mu}m in 16 objects, yielding abundances consistent with those derived by Boogert et al. based on a simultaneous 9.75 and 3.53 {mu}m data analysis. Our study indicates that NH{sub 3} is present primarily in H{sub 2}O-rich ices, but that in some cases, such ices are insufficient to explain the observed narrow FWHM. The laboratory data point to CH{sub 3}OH being in an almost pure methanol ice, or mixed mainly with CO or CO{sub 2}, consistent with its formation through hydrogenation on grains. Finally, we use our derived NH{sub 3} abundances in combination with previously published abundances of other solid N-bearing species to find that up to 10%-20% of nitrogen is locked up in known ices.

Bottinelli, Sandrine; Van Dishoeck, Ewine F.; Lahuis, Fred [Leiden Observatory, Leiden University, P.O. Box 9513, NL 2300 RA Leiden (Netherlands); Boogert, A. C. Adwin [IPAC, NASA Herschel Science Center, Mail Code 100-22, California Institute of Technology, Pasadena, CA 91125 (United States); Bouwman, Jordy; Beckwith, Martha; Oeberg, Karin I.; Linnartz, Harold [Raymond and Beverly Sackler Laboratory for Astrophysics, Leiden Observatory, Leiden University, P.O. Box 9513, NL 2300 RA Leiden (Netherlands); Pontoppidan, Klaus M.; Blake, Geoffrey A. [California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA 91125 (United States); Evans, Neal J., E-mail: sandrine.bottinelli@cesr.f [Department of Astronomy, University of Texas at Austin, 1 University Station C1400, Austin, TX 78712-0259 (United States)

2010-08-01T23:59:59.000Z

405

A fresh look at coal-derived liquid fuels  

SciTech Connect

35% of the world's energy comes from oil, and 96% of that oil is used for transportation. The current number of vehicles globally is estimated to be 700 million; that number is expected to double overall by 2030, and to triple in developing countries. Now consider that the US has 27% of the world's supply of coal yet only 2% of the oil. Coal-to-liquids technologies could bridge the gap between US fuel supply and demand. The advantages of coal-derived liquid fuels are discussed in this article compared to the challenges of alternative feedstocks of oil sands, oil shale and renewable sources. It is argued that pollutant emissions from coal-to-liquid facilities could be minimal because sulfur compounds will be removed, contaminants need to be removed for the FT process, and technologies are available for removing solid wastes and nitrogen oxides. If CO{sub 2} emissions for coal-derived liquid plants are captured and sequestered, overall emissions of CO{sub 2} would be equal or less than those from petroleum. Although coal liquefaction requires large volumes of water, most water used can be recycled. Converting coal to liquid fuels could, at least in the near term, bring a higher level of stability to world oil prices and the global economy and could serve as insurance for the US against price hikes from oil-producing countries. 7 figs.

Paul, A.D. [Benham Companies LLC (USA)

2009-01-15T23:59:59.000Z

406

Availability of Nitrous Nitrogen to Plants.  

E-Print Network (OSTI)

V, .=DL ULL LI~C a~ailability 01 ILILKLL~: IIILIU~~I~ LU curn, l~aa, 8011 31LY3 1 27.3 .53 .I447 1 I 1 5: 1250 .I349 ic nitrogen ( 37.P' 1 -59 1 .2195 ru.. nv / 36.6 .57 1 .2086 I -2141 1 .O7b/ I 1. gm. nitrous nitrogen 30.2 1 .64 1 .I933 1... .12 -.01 ' .09 V1 -- I w 01 ---- I ------ el M - 1 --O6 X * ---- ------ U1 $ !z - --- i d $ --- - I -20 2 Y * F - I M 4 M .34 I --- .20 M .14 5 nitrogen --- --- -.02 .14 -.48 -.01 -12 .18 .OS...

Fraps, G. S. (George Stronach); Sterges, A. J.

1935-01-01T23:59:59.000Z

407

Transformation of Yeast 1. Grow cells in liquid culture to mid-logarithmic stage (0.5-0.8 ODU/ml)  

E-Print Network (OSTI)

Transformation of Yeast 1. Grow cells in liquid culture to mid-logarithmic stage (0.5-0.8 ODU/ml) *cells at stationary phase have a thicker cell wall and are more difficult to transform 2. Centrifuge 5 for 5 min, chill on ice for 5 min, and vortex prior to using) 10. Add DNA to be transformed: *if

Odorizzi, Greg

408

Chlorine activation indoors and outdoors via surface-mediated reactions of nitrogen oxides with hydrogen chloride.  

E-Print Network (OSTI)

complexes between nitrogen dioxide, nitric acid, nitrous1992) Indoor ozone and nitrogen dioxide: A potential pathwaybed of SiO 2 pellets. Nitrogen dioxide is introduced from a

2009-01-01T23:59:59.000Z

409

Air Quality Responses to Changes in Black Carbon and Nitrogen Oxide Emissions  

E-Print Network (OSTI)

D. , (2008a). Carbonyl and nitrogen dioxide emissions fromstudy of indoor nitrogen dioxide levels and respiratoryand modeled nitrogen dioxide (NO 2 ) concentrations. All

Millstein, Dev

2009-01-01T23:59:59.000Z

410

E-Print Network 3.0 - additional nitrogen responses Sample Search...  

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

tons of nitrogen fertilizer each year, combines dinitro- gen... National Park (Colorado, USA): a response to anthropogenic nitrogen deposition." Geobiology 1... Nitrogen...

411

The importance of cytosolic glutamine synthetase in nitrogen assimilation and recycling  

E-Print Network (OSTI)

nitrogen mobilization and recycling in trees. Photosynthesisloci mapping for nitrogen recycling in rice. Journal ofNitrogen Assimilation and Recycling Stphanie M. Bernard 1

Bernard, S.M.

2009-01-01T23:59:59.000Z

412

E-Print Network 3.0 - aerobic nitrogen cycle Sample Search Results  

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

biological nitrogen fixation of gaseous nitrogen. The water cycle is important to ecosystem... and Nitrogen Cycles As ... Source: Barboza, Perry - Institute of Arctic Biology,...

413

Enzymatic solubilization of nitrogenous constituents of carrots  

E-Print Network (OSTI)

of enzyme concentration upon nitrogen so1ubi 1i zed in carrot tops ( 10g dry weight) . Conditions of assay: pH = 3. 5, i ncubati on time = 20 hr, incubation temperature = 45'C. 24 hydrolysis. These data confirm earlier reports that -. 01% is the pro... roots and tops, a concentration of 1. 0% A-12-C at pH 3. 5 provided the maximum increase in soluble ni trogenous consti tuents . For car~ot roots, a concentration of 1. 0/ ficin at pH 4, 5 provided the maximum increase in soluble nitrogen. With carrot...

Curry, James Cannon

1971-01-01T23:59:59.000Z

414

Foam insulation for a liquid oxygen densifier  

Science Journals Connector (OSTI)

Analyses indicated that it would not be cost effective to vacuum insulate a 7 foot diameter by 30 foot long liquid nitrogen vessel for a launch facility liquid oxygen densifier. Foam insulation appeared to be the logical choice for this infrequently used ground support equipment but the history of foam problems due to cracking, adhesive failure and internal shearing weighed against the use of commercial spray-on material. These problems were solved with a system consisting of alternate sealing and flexible foam layers: (1) an inner membrane sealed to itself but not attached to the cold shell or pipe; (2) a flexible foam insulation layer; (3) a vapor-tight sealing membrane; (4) a second flexible foam insulation layer and (5) an outer aluminized sealing membrane. The second and subsequent layers are sealed to each underlying layer by flexible foam contact adhesive. The inner sealing membrane is particularly vital in that it allows the first foam layer to expand and contract as the tank temperature changes and it also protects the tank from chloride corrosion from the foam. This paper describes preliminary testing to prove out the system and the steps taken to install flexible foam insulation on the oxygen densifier vessel.

G.E. McIntosh; R. Stuckenschmidt

2012-01-01T23:59:59.000Z

415

IceCube: An Instrument for Neutrino Astronomy  

E-Print Network (OSTI)

Neutrino astronomy beyond the Sun was first imagined in the late 1950s; by the 1970s, it was realized that kilometer-scale neutrino detectors were required. The first such instrument, IceCube, is near completion and taking data. The IceCube project transforms a cubic kilometer of deep and ultra-transparent Antarctic ice into a particle detector. A total of 5,160 optical sensors are embedded into a gigaton of Antarctic ice to detect the Cherenkov light emitted by secondary particles produced when neutrinos interact with nuclei in the ice. Each optical sensor is a complete data acquisition system, including a phototube, digitization electronics, control and trigger systems and LEDs for calibration. The light patterns reveal the type (flavor) of neutrino interaction and the energy and direction of the neutrino, making neutrino astronomy possible. The scientific missions of IceCube include such varied tasks as the search for sources of cosmic rays, the observation of Galactic supernova explosions, the search for dark matter, and the study of the neutrinos themselves. These reach energies well beyond those produced with accelerator beams. The outline of this review is as follows: Neutrino Astronomy and Kilometer-Scale Detectors. High-Energy Neutrino Telescopes: Methodologies of Neutrino Detection. IceCube Hardware. High-Energy Neutrino Telescopes: Beyond Astronomy. Future Projects

Francis Halzen; Spencer R. Klein

2010-07-07T23:59:59.000Z

416

Fire in the Ice, Summer 2004  

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

R R Vol. 4, Iss. 3 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ CONTENTS Gulf of Mexico Remote Observatory Update ............... 1 Hydrate Decomposition Studies at USGS .................... 5 NETL's HP View Cell Operational .......................... 10 Announcements .................. 13 * AAPG Hedberg Conference * JIP Drilling Delayed * TOUGH-Fx/HYDRATE v1.0 * Advisory Committee Meeting * Anaximander project Spotlight on Research ........ 16 Dr. Keith Kvenvolden CONTACT POINT Ray Boswell National Energy Technology Laboratory (304) 285-4541 (304) 285-4469 fax Ray.Boswell@netl.doe.gov The Fire in the Ice Newsletter is

417

Fire in the Ice, Fall 2004  

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

4 4 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ CONTENTS AAPG Hedberg Research Conference ............................ 1 Oak Ridge Facilities .............. 4 Relic Gas Hydrates of Northwestern Siberia ............. 8 Announcements .................. 11 * JIP Tests in the Gulf of Mexico * Planning Workshop Slated for Early Next Year Spotlight on Research ........ 12 Ingo Pecher CONTACT POINT Ray Boswell National Energy Technology Laboratory (304) 285-4541 (304) 285-4216 fax Ray.Boswell@netl.doe.gov The Fire in the Ice Newsletter is also available online at our website (http://www.netl.doe.gov/ scngo/Natural%20Gas/hydrates/)

418

Metastable hydronium ions in UV-irradiated ice  

SciTech Connect

We show that the irradiation of UV light (10-11 eV) onto an ice film produces metastable hydronium (H{sub 3}O{sup +}) ions in the ice at low temperatures (53-140 K). Evidence of the presence of metastable hydronium ions was obtained by experiments involving adsorption of methylamine onto UV-irradiated ice films and hydrogen-deuterium (H/D) isotopic exchange reaction. The methylamine adsorption experiments showed that photogenerated H{sub 3}O{sup +} species transferred a proton to the methylamine arriving at the ice surface, thus producing the methyl ammonium ion, which was detected by low energy sputtering method. The H{sub 3}O{sup +} species induced the H/D exchange of water, which was monitored through the detection of water isotopomers on the surface by using the Cs{sup +} reactive ion scattering method. Thermal and temporal stabilities of H{sub 3}O{sup +} and its proton migration activity were examined. The lifetime of the hydronium ions in the amorphized ice was greater than 1 h at {approx}53 K and decreased to {approx}5 min at 140 K. Interestingly, a small portion of hydronium ions survived for an extraordinarily long time in the ice, even at 140 K. The average migration distance of protons released from H{sub 3}O{sup +} in the ice was estimated to be about two water molecules at {approx}54 K and about six molecules at 100 K. These results indicate that UV-generated hydronium ions can be efficiently stabilized in low-temperature ice. Such metastable hydronium ions may play a significant role in the acid-base chemistry of ice particles in interstellar clouds.

Moon, Eui-Seong; Kang, Heon [Department of Chemistry, Seoul National University, 1 Gwanak-ro, Seoul 151-747 (Korea, Republic of)

2012-11-28T23:59:59.000Z

419

Biexciton emission from single isoelectronic traps formed by nitrogen-nitrogen pairs in GaAs  

SciTech Connect

We have studied photoluminescence (PL) from individual isoelectronic traps formed by nitrogen-nitrogen (NN) pairs in GaAs. Sharp emission lines due to exciton and biexciton were observed from individual isoelectronic traps in nitrogen atomic-layer doped (ALD) GaAs. The binding energy of biexciton bound to individual isoelectronic traps was approximately 8 meV. Both the exciton and biexciton luminescence lines show completely random polarization and no fine-structure splitting. These results are desirable to the application to the quantum cryptography used in the field of quantum information technology.

Takamiya, Kengo; Fukushima, Toshiyuki; Yagi, Shuhei; Hijikata, Yasuto; Yaguchi, Hiroyuki [Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku , Saitama 338-8570 (Japan); Mochizuki, Toshimitsu; Yoshita, Masahiro; Akiyama, Hidefumi [Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581 (Japan); Kuboya, Shigeyuki; Onabe, Kentaro [Department of Advanced Materials Science, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581 (Japan); Katayama, Ryuji [Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan)

2013-12-04T23:59:59.000Z

420

Annual measurement of sea-ice thickness using an upward-looking sonar  

Science Journals Connector (OSTI)

... and the forms the ice takes are of great importance to operators in polar conditions. Offshore ...

Rick Hudson

1990-03-08T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

1 Microscopic and environmental controls on the spacing and thickness of segregated 2 ice lenses  

E-Print Network (OSTI)

water, and ice conspire with the prevailing environmental conditions 52 to produce macroscopic ice by Henry (2000). The first comprehensive and tractable model 57 for ice lens growth was produced by O1 Microscopic and environmental controls on the spacing and thickness of segregated 2 ice lenses 3

Rempel, Alan W.

422

Polar Sea Ice Mapping Using SeaWinds Data Hyrum S. Anderson and David G. Long  

E-Print Network (OSTI)

of Bayes detection to produce sea ice extent maps. Statistical models for sea ice and ocean are represented information is incorpo- rated through the loss terms associated with Bayes risk. Sea ice extent maps producedPolar Sea Ice Mapping Using SeaWinds Data Hyrum S. Anderson and David G. Long Brigham Young

Long, David G.

423

Transoceanic infragravity waves impacting Antarctic ice shelves Peter D. Bromirski,1  

E-Print Network (OSTI)

that IG- wave forcing may produce ice-shelf fractures that enable abrupt disintegration of ice shelvesTransoceanic infragravity waves impacting Antarctic ice shelves Peter D. Bromirski,1 Olga V-forced shoreward propagating swell. Seismic observations on the Ross Ice Shelf show that free IG waves generated

Boyce, C. Kevin

424

Development, sensitivity analysis, and uncertainty quantification of high-fidelity arctic sea ice models.  

SciTech Connect

Arctic sea ice is an important component of the global climate system and due to feedback effects the Arctic ice cover is changing rapidly. Predictive mathematical models are of paramount importance for accurate estimates of the future ice trajectory. However, the sea ice components of Global Climate Models (GCMs) vary significantly in their prediction of the future state of Arctic sea ice and have generally underestimated the rate of decline in minimum sea ice extent seen over the past thirty years. One of the contributing factors to this variability is the sensitivity of the sea ice to model physical parameters. A new sea ice model that has the potential to improve sea ice predictions incorporates an anisotropic elastic-decohesive rheology and dynamics solved using the material-point method (MPM), which combines Lagrangian particles for advection with a background grid for gradient computations. We evaluate the variability of the Los Alamos National Laboratory CICE code and the MPM sea ice code for a single year simulation of the Arctic basin using consistent ocean and atmospheric forcing. Sensitivities of ice volume, ice area, ice extent, root mean square (RMS) ice speed, central Arctic ice thickness, and central Arctic ice speed with respect to ten different dynamic and thermodynamic parameters are evaluated both individually and in combination using the Design Analysis Kit for Optimization and Terascale Applications (DAKOTA). We find similar responses for the two codes and some interesting seasonal variability in the strength of the parameters on the solution.

Peterson, Kara J.; Bochev, Pavel Blagoveston; Paskaleva, Biliana S.

2010-09-01T23:59:59.000Z

425

Development of the Great Lakes Ice-circulation Model (GLIM): Application to Lake Erie in 20032004  

E-Print Network (OSTI)

due to strong cooling and wind mixing. Prediction of the lake's ice extent (i.e., ice coverDevelopment of the Great Lakes Ice-circulation Model (GLIM): Application to Lake Erie in 2003: Received 4 May 2009 Accepted 30 November 2009 Communicated by Dr. Ram Yerubandi Index words: Coupled Ice

426

Arctic sea ice declined rapidly to unprec-edented low extents in the summer of 2007,  

E-Print Network (OSTI)

cooling, ice extent remains far below normal. Understanding Sea Ice Loss Key factors behind this recordArctic sea ice declined rapidly to unprec- edented low extents in the summer of 2007, raising concern that the Arctic may be on the verge of a fundamental transition toward a seasonal ice cover

Clements, Craig

427

Seasonal variation of upwelling in the Alaskan Beaufort Sea: Impact of sea ice cover  

E-Print Network (OSTI)

that lateral ocean heat flux from the shelf to the basin melts a substantial amount of ice in the marginal iceSeasonal variation of upwelling in the Alaskan Beaufort Sea: Impact of sea ice cover Lena M to characterize differences in upwelling near the shelf break in the Alaskan Beaufort Sea due to varying sea ice

Pickart, Robert S.

428

ARKTOS: An Intelligent System for SAR Sea Ice Image Classification Leen-Kiat Soh1  

E-Print Network (OSTI)

in meteorology and in global climate studies. For example, the thickness of sea ice influences the heat fluxARKTOS: An Intelligent System for SAR Sea Ice Image Classification Leen-Kiat Soh1 , Costas sea ice image analysis named ARKTOS (Advanced Reasoning using Knowledge for Typing Of Sea ice). ARKTOS

Kansas, University of

429

Seasonal variation of upwelling in the Alaskan Beaufort Sea: Impact of sea ice cover  

E-Print Network (OSTI)

ocean heat flux42 from the shelf to the basin melts a substantial amount of ice in the marginal ice Seasonal variation of upwelling in the Alaskan Beaufort Sea: Impact of sea ice cover Lena M the shelfbreak in the Alaskan Beaufort Sea due to3 varying sea-ice conditions. The record is divided into three

Pickart, Robert S.

430

Modeling Coulombic failure of sea ice with leads Alexander V. Wilchinsky1  

E-Print Network (OSTI)

Modeling Coulombic failure of sea ice with leads Alexander V. Wilchinsky1 and Daniel L. Feltham1 ice failure under lowconfinement compression is modeled with a linear Coulombic criterion that can of anisotropy we consider a simplified anisotropic sea ice model where the sea ice thickness depends

Feltham, Daniel

431

Testing a Coupled Ice-Mixed-Layer Model Under Subarctic Conditions  

Science Journals Connector (OSTI)

A one-dimensional oceanic mixed-layer model has been coupled with a thermodynamic sea ice model in order to study the seasonal cycle of ice-ocean interaction in the subarctic ocean. The ice thickness is assumed constant and only variations of ice ...

Marie-Nolle Houssais

1988-02-01T23:59:59.000Z

432

The role of sea ice in the temperature-precipitation feedback of glacial cycles  

E-Print Network (OSTI)

precipitation over the ice sheets. The insulating effect of the sea ice on the hydrological cycle is foundThe role of sea ice in the temperature-precipitation feedback of glacial cycles Hezi Gildor · Yosef climate history can shed some light. Sea ice is a key player in the climate system and in the hydrological

Tziperman, Eli

433

The role of sea ice in the temperature-precipitation feedback of glacial cycles  

E-Print Network (OSTI)

to an increase in snow precipitation over the ice sheets. The insulating effect of the sea iceThe role of sea ice in the temperature-precipitation feedback of glacial cycles Hezi Gildor · Yosef unsatisfactory, yet upon which past climate history can shed some light. Sea ice is a key player in the climate

Tziperman, Eli

434

10.1098/rsta.2003.1244 Sea-ice switches and abrupt climate change  

E-Print Network (OSTI)

of sea-ice cover|through its strong cooling ice{albedo feedback, its insulating e®ect on local10.1098/rsta.2003.1244 Sea-ice switches and abrupt climate change By Hezi Gildor1 a n d Eli propose that past abrupt climate changes were probably a result of rapid and extensive variations in sea-ice

Tziperman, Eli

435

NAO influence on net sea ice production and exchanges in the Arctic region  

E-Print Network (OSTI)

insulation during the ice formation process. The North Atlantic Oscillation (NAO) related atmosphericNAO influence on net sea ice production and exchanges in the Arctic region Aixue Hu, Claes Rooth and Rainer Bleck February 18, 2003 Abstract The variability of the net sea ice production and the sea ice

Hu, Aixue

436

NAO influence on net sea ice production and exchanges in the Arctic region  

E-Print Network (OSTI)

suppresses the development of thermal insulation during the ice formation process. The North AtlanticNAO influence on net sea ice production and exchanges in the Arctic region Aixue Hu National Center of the net sea ice production and the sea ice exchanges between the Arctic and its adjacent seas are studied

Hu, Aixue

437

Ice-shelf collapse from subsurface warming as a trigger for Heinrich events  

E-Print Network (OSTI)

in Antarctica, the resulting ice-shelf loss and attendant HSIS acceleration would produce a Heinrich eventIce-shelf collapse from subsurface warming as a trigger for Heinrich events Shaun A. Marcotta,1-discharge events from the Hudson Strait Ice Stream (HSIS) of the Laurentide Ice Sheet, referred to as Heinrich

Schmittner, Andreas

438

Sediment Melt-Migration Dynamics in Perennial Antarctic Lake Ice Steven M. Jepsen*  

E-Print Network (OSTI)

melting through laboratory ice at 22 uC in simulated summer conditions, with warmer ice producing faster boundaries was pronounced in laboratory ice warmer than 21 uC. This mechanism produced a flux of 0.1 g m22 hrSediment Melt-Migration Dynamics in Perennial Antarctic Lake Ice Steven M. Jepsen* Edward E. Adams

Priscu, John C.

439

FESD Proposal, Type I VOICE: Volcano, Ocean, Ice, and Carbon Experiments  

E-Print Network (OSTI)

in continental ice volume and sea level produce changes in pressure and stress within the crust and mantleFESD Proposal, Type I VOICE: Volcano, Ocean, Ice, and Carbon Experiments Project Manager: Charles during Pleistocene ice ages. We posit that changes in sea level and ice volume drive changes in volcanism

Huybers, Peter

440

Seasonal predictions of ice extent in the Arctic Ocean R. W. Lindsay,1  

E-Print Network (OSTI)

Service and the U. S. National Ice Center) produces summer outlooks of ice conditions for specific regionsSeasonal predictions of ice extent in the Arctic Ocean R. W. Lindsay,1 J. Zhang,1 A. J. Schweiger,1 29 February 2008. [1] How well can the extent of arctic sea ice be predicted for lead periods of up

Zhang, Jinlun

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Modeled methanesulfonic acid (MSA) deposition in Antarctica and its relationship to sea ice  

E-Print Network (OSTI)

been investigated with the goal of producing a proxy for sea ice cover in past climates [SaigneModeled methanesulfonic acid (MSA) deposition in Antarctica and its relationship to sea ice P. J] Methanesulfonic acid (MSA) has previously been measured in ice cores in Antarctica as a proxy for sea ice extent

Holmes, Christopher D.

442

Experimental Validation of a Computational Fluid Dynamics Model for IAQ applications in Ice Rink Arenas  

E-Print Network (OSTI)

1 Experimental Validation of a Computational Fluid Dynamics Model for IAQ applications in Ice Rink, USA, Fax: 617-432-4122, Abstract Many ice rink arenas have ice resurfacing equipment that uses fossil temperature distributions in ice rinks. The numerical results agree reasonably with the corresponding

Chen, Qingyan "Yan"

443

Gas ageice age differences and the chronology of the Vostok ice core, M. L. Bender,1  

E-Print Network (OSTI)

Gas age­ice age differences and the chronology of the Vostok ice core, 0­100 ka M. L. Bender,1 G. [1] Gas is trapped in polar ice at depths of $50­120 m and is therefore significantly younger than cores (Vostok, Dome Fuji, and Dome C). We recorrelate the gas records of Vostok and Greenland Ice Sheet

Chappellaz, Jérôme

444

Application of FLake for the prediction of ice thickness for inland waters in the Netherlands  

E-Print Network (OSTI)

Application of FLake for the prediction of ice thickness for inland waters in the Netherlands Cisco in the Netherlands. In cold spells numerous ditches, canals and lakes get frozen and many people go out for ice in the Netherlands. in ice thickness predictions. KNMI issues ice thickness predictions, based on a model of De Bruin

Stoffelen, Ad

445

FNS Presentation - Hydrogen Station & Hydrogen ICE Vehicles Operation  

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

Hydrogen Station & Hydrogen ICE Hydrogen Station & Hydrogen ICE Vehicle Operations Federal Network for Sustainability Idaho Falls, Idaho - July 2006 Jim Francfort INL/CON-06-11569 Presentation Outline * Background & Goal * Arizona Public Service (APS) Alternative Fuel (Hydrogen) Pilot Plant - design & operations * Fuel Dispensing * Hydrogen & HCNG Internal Combustion Engine (ICE) Vehicle Testing Activities * Briefly, other AVTA Activities * WWW Information 2 AVTA Background & Goal * Advanced Vehicle Testing Activity (AVTA) is part of the U.S. Department of Energy's (DOE) FreedomCAR and Vehicle Technologies Program * These activities are conducted by the Idaho National Laboratory (INL) & the AVTA testing partner Electric Transportation Applications (ETA) * AVTA Goal - Provide benchmark data for technology

446

Multi-model Mean Nitrogen and Sulfur Deposition from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP): Evaluation of Historical and Projected Future Changes  

SciTech Connect

We present multi-model global datasets of nitrogen and sulfate deposition covering time periods from 1850 to 2100, calculated within the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP). The computed deposition fluxes are compared to surface wet deposition and ice-core measurements. We use a new dataset of wet deposition for 2000-2002 based on critical assessment of the quality of existing regional network data. We show that for present-day (year 2000 ACCMIP time-slice), the ACCMIP results perform similarly to previously published multi-model assessments. The analysis of changes between 1980 and 2000 indicates significant differences between model and measurements over the United States, but less so over Europe. This difference points towards misrepresentation of 1980 NH3 emissions over North America. Based on ice-core records, the 1850 deposition fluxes agree well with Greenland ice cores but the change between 1850 and 2000 seems to be overestimated in the Northern Hemisphere for both nitrogen and sulfur species. Using the Representative Concentration Pathways to define the projected climate and atmospheric chemistry related emissions and concentrations, we find large regional nitrogen deposition increases in 2100 in Latin America, Africa and parts of Asia under some of the scenarios considered. Increases in South Asia are especially large, and are seen in all scenarios, with 2100 values more than double 2000 in some scenarios and reaching >1300 mgN/m2/yr averaged over regional to continental scale regions in RCP 2.6 and 8.5, ~30-50% larger than the values in any region currently (2000). Despite known issues, the new ACCMIP deposition dataset provides novel, consistent and evaluated global gridded deposition fields for use in a wide range of climate and ecological studies.

Lamarque, Jean-Francois; Dentener, Frank; McConnell, J.R.; Ro, C-U; Shaw, Mark; Vet, Robert; Bergmann, D.; Cameron-Smith, Philip; Dalsoren, S.; Doherty, R.; Faluvegi, G.; Ghan, Steven J.; Josse, B.; Lee, Y. H.; MacKenzie, I. A.; Plummer, David; Shindell, Drew; Skeie, R. B.; Stevenson, D. S.; Strode, S.; Zeng, G.; Curran, M.; Dahl-Jensen, D.; Das, S.; Fritzsche, D.; Nolan, M.

2013-08-20T23:59:59.000Z

447

Minimalist Model of Ice Microphysics in Mixed-phase Stratiform Clouds  

SciTech Connect

The question of whether persistent ice crystal precipitation from super cooled layer clouds can be explained by time-dependent, stochastic ice nucleation is explored using an approximate, analytical model, and a large-eddy simulation (LES) cloud model. The updraft velocity in the cloud defines an accumulation zone, where small ice particles cannot fall out until they are large enough, which will increase the residence time of ice particles in the cloud. Ice particles reach a quasi-steady state between growth by vapor deposition and fall speed at cloud base. The analytical model predicts that ice water content (wi) has a 2.5 power law relationship with ice number concentration ni. wi and ni from a LES cloud model with stochastic ice nucleation also confirm the 2.5 power law relationship. The prefactor of the power law is proportional to the ice nucleation rate, and therefore provides a quantitative link to observations of ice microphysical properties.

Yang, F.; Ovchinnikov, Mikhail; Shaw, Raymond A.

2013-07-28T23:59:59.000Z

448

Chromatographic Determination of Total Nitrogen Following the Kjeldahl Oxidation  

Science Journals Connector (OSTI)

......23745 (1986). 3. B.M. Jones, and C.G. Daughton. Chemiluminescence vs. Kjeldahl determination of nitrogen in oil shale retort waters and organo- nitrogen compounds. Anal. Chem. 57: 232025 (1985). 4. B.T. Croll, T. Tomlinson......

Serban Moldoveanu

1988-01-01T23:59:59.000Z

449

First Principles Prediction of Nitrogen-doped Carbon Nanotubes...  

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

First Principles Prediction of Nitrogen-doped Carbon Nanotubes as a High-Performance Cathode for Li-S Batteries. First Principles Prediction of Nitrogen-doped Carbon Nanotubes as a...

450

Breath is a mixture of nitrogen, oxygen, carbon dioxide, water  

E-Print Network (OSTI)

12 SCIENCE Breath is a mixture of nitrogen, oxygen, carbon dioxide, water vapour, inert gases. On the basis of proton affinity, the major constituents of air and breath (nitrogen, oxygen, carbon dioxide

451

Electrochemical process for the preparation of nitrogen fertilizers  

DOE Patents (OSTI)

The present invention provides methods and apparatus for the preparation of nitrogen fertilizers including ammonium nitrate, urea, urea-ammonium nitrate, and/or ammonia utilizing a source of carbon, a source of nitrogen, and/or a source of hydrogen. Implementing an electrolyte serving as ionic charge carrier, (1) ammonium nitrate is produced via the reduction of a nitrogen source at the cathode and the oxidation of a nitrogen source at the anode; (2) urea or its isomers are produced via the simultaneous cathodic reduction of a carbon source and a nitrogen source; (3) ammonia is produced via the reduction of nitrogen source at the cathode and the oxidation of a hydrogen source at the anode; and (4) urea-ammonium nitrate is produced via the simultaneous cathodic reduction of a carbon source and a nitrogen source, and anodic oxidation of a nitrogen source. The electrolyte can be solid.

Aulich, Ted R.; Olson, Edwin S.; Jiang, Junhua

2013-03-19T23:59:59.000Z

452

Nitrogen chemistry during oil shale pyrolysis  

SciTech Connect

Real time evolution of ammonia (NH{sub 3}) and hydrogen cyanide (HCN), two major nitrogen-containing volatiles evolved during oil shale pyrolysis, was measured by means of a mass spectrometer using chemical ionization and by infrared spectroscopy. While the on-line monitoring of NH{sub 3} in oil shale pyrolysis games was possible by both techniques, HCN measurements were only possible by IR. We studied one Green River Formation oil shale and one New Albany oil shale. The ammonia from the Green River oil shale showed one broad NH{sub 3} peak maximizing at a high temperature. For both oil shales, most NH{sub 3} evolves at temperatures above oil-evolving temperature. The important factors governing ammonia salts such as Buddingtonite in Green River oil shales, the distribution of nitrogen functional groups in kerogen, and the retorting conditions. The gas phase reactions, such as NH{sub 3} decomposition and HCN conversion reactions, also play an important role in the distribution of nitrogen volatiles, especially at high temperatures. Although pyrolysis studies of model compounds suggests the primary nitrogen product from kerogen pyrolysis to be HCN at high temperatures, we found only a trace amount of HCN at oil-evolving temperatures and none at high temperatures (T {gt} 600{degree}C). 24 refs., 6 figs., 2 tabs.

Oh, Myongsook S.; Crawford, R.W.; Foster, K.G.; Alcaraz, A.

1990-01-10T23:59:59.000Z

453

Introduction Air Quality and Nitrogen Dioxide  

E-Print Network (OSTI)

- Global update 2005. Primary sources of air pollutants include combustion products from power generationIntroduction Air Quality and Nitrogen Dioxide Air pollution can be defined as "the presence effects to man and/or the environment". (DEFRA) "Clean air is considered to be a basic requirement

454

groundwater nitrogen source identification and remediation  

E-Print Network (OSTI)

producer profits. This will, in turn, benefit water bodies in the area that receive stream baseflow fromgroundwater nitrogen source identification and remediation The Seymour Aquifer is a shallow aquifer water withdraws are used for irrigation while the cities of Vernon, Burk- burnett and Electra and many

455

OXYGEN ADSORPTION ON NITROGEN CONTAINING CARBON SURFACES  

E-Print Network (OSTI)

OXYGEN ADSORPTION ON NITROGEN CONTAINING CARBON SURFACES Alejandro Montoya, Jorge O. Gil, Fanor-rich site of the carbon basal plane of graphite and then, it dissociates into oxygen atoms.1,2 Oxygen atoms at the edge of the carbon surface can form covalent bonds with oxygen. These sites can chemisorb

Truong, Thanh N.

456

N-15 NMR spectra of naturally abundant nitrogen in soil and aquatic natural organic matter samples of the International Humic Substances Society  

SciTech Connect

The naturally abundant nitrogen in soil and aquatic NOM samples from the International Humic Substances Society has been characterized by solid state CP/MAS ?N NMR. Soil samples include humic and fulvic acids from the Elliot soil, Minnesota Waskish peat and Florida Pahokee peat, as well as the Summit Hill soil humic acid and the Leonardite humic acid. Aquatic samples include Suwannee River humic, fulvic and reverse osmosis isolates, Nordic humic and fulvic acids and Pony Lake fulvic acid. Additionally, Nordic and Suwannee River XAD-4 acids and Suwannee River hydrophobic neutral fractions were analyzed. Similar to literature reports, amide/aminoquinone nitrogens comprised the major peaks in the solid state spectra of the soil humic and fulvic acids, along with heterocyclic and amino sugar/terminal amino acid nitrogens. Spectra of aquatic samples, including the XAD-4 acids, contain resolved heterocyclic nitrogen peaks in addition to the amide nitrogens. The spectrum of the nitrogen enriched, microbially derived Pony Lake, Antarctica fulvic acid, appeared to contain resonances in the region of pyrazine, imine and/or pyridine nitrogens, which have not been observed previously in soil or aquatic humic substances by ?N NMR. Liquid state ?N NMR experiments were also recorded on the Elliot soil humic acid and Pony Lake fulvic acid, both to examine the feasibility of the techniques, and to determine whether improvements in resolution over the solid state could be realized. For both samples, polarization transfer (DEPT) and indirect detection (H?N gHSQC) spectra revealed greater resolution among nitrogens directly bonded to protons. The amide/aminoquinone nitrogens could also be observed by direct detection experiments.

Thorn, Kevin A.; Cox, Larry G.

2009-02-28T23:59:59.000Z

457

Monitoring of nitrogen dioxide in and around an  

Science Journals Connector (OSTI)

Recognising that nitrogen dioxide (NO2) may be the primary air contaminant released from an Oman liquid natural gas (LNG) plant, this study has been designed with emphasis on this pollutant. The dispersion of NO2 was examined and compared with measured data during the period from 23 February to 1 April 2001. The observed concentrations were obtained by using NO2 diffusion tubes to monitor the spatial distribution of NO2 concentrations around at four sites downwind of the plant site. The Industrial Source Complex Short-Term (ISCST) dispersion model was used to predict concentrations at the same sites and for the same time period. Evaluation of the results showed that the model predicted concentrations lower than those observed. However, the comparisons showed that the relationship between the modelled and measured concentrations was consistent. The model also allows the detailed description of predicted concentrations in contour map form. Generally, the predicted concentrations were found to be lower than the permissible limit values, with the maximum ground-level concentrations being found much closer to the plant. On the basis of this study, it can be stated that the Oman LNG plant would not cause any significant deterioration in air quality.

Sabah A. Abdul-Wahab

2002-01-01T23:59:59.000Z

458

HELSINKI UNIVERSITY OF TECHNOLOGY ENE-47.153 NITROGEN #2NITROGEN #2  

E-Print Network (OSTI)

(BFB), (CFB) (BFB), (CFB) Fuel nitrogen content Excess air Air staging Limestone addition , - (BFB), (CFB) SO2 level SNCR ­ NH3 , - SNCR ­ urea SCR - Pressure , (but NO2 ) #12;HELSINKI

Zevenhoven, Ron

459

Evolutionary tradeoffs can select against nitrogen fixation and thereby maintain nitrogen limitation  

E-Print Network (OSTI)

. evolutionary ecology model Biological nitrogen (N) fixation--the conversion of atmo- spheric N2 gas) but is equally important to explaining the paradox of N limitation. Unlike the successional question

Menge, Duncan

460

Several caves in high elevated alpine regions host massive ice fillings and underground glaciers. The age of the ice may exceed several hundred or thousand years and the ice bodies possibly have recorded paleoclimatic information. Despite  

E-Print Network (OSTI)

of the NCA within the Eastern Alps of Europe. Yellow dots indicate locations of known ice caves, yellow stars information. The project AUSTRO*ICE*CAVES*2100 aims at investigating the extent with results from steam-drilling which did not reach the bottom of the ice, but got stuck in deep layers. Most

Brückl, Ewald

Note: This page contains sample records for the topic "liquid nitrogen ice" 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

Temperature and nutrient supply interact to control nitrogen fixation ...  

Science Journals Connector (OSTI)

Temperature and nutrient supply interact to control nitrogen fixation in oligotrophic streams: An experimental examination. Marcarelli, Amy M., Wayne A.

462

Liquid Scintillator Purification  

SciTech Connect

The KamLAND collaboration has studied background requirements and purification methods needed to observe the 7Be neutrino from the sun. First we will discuss the present background situation in KamLAND where it is found that the main background components are 210Pb and 85Kr. It is then described how to purify the liquid scintillator. The present status and results on how to remove 210Pb from the liquid scintillator are discussed. Specifically, the detailed analysis of the effects of distillation and adsorption techniques are presented.

Kishimoto, Y. [Research Center for Neutrino Science, Tohoku University (Japan)

2005-09-08T23:59:59.000Z

463

Vapour nucleation in a cryogenicfluiddissolvednitrogen mixture during rapid depressurization  

Science Journals Connector (OSTI)

...the dissolved nitrogen comes out of the...effect of dissolved nitrogen was not addressed...non-condensable gas (nitrogen) in a cryogenic...g. superheated water or pure refrigerants...to estimate the solubility of nitrogen in...

1999-01-01T23:59:59.000Z

464

Nitrogen use in switchgrass grown for bioenergy across the USA  

E-Print Network (OSTI)

Nitrogen use in switchgrass grown for bioenergy across the USA V.N. Owens a , D.R. Viands b , H Available online 17 August 2013 Keywords: Nitrogen removal Switchgrass Bioenergy Nitrogen use efficiency as a forage, conservation, and bioenergy crop [1e5]. It offers a number of distinct benefits including broad

Pawlowski, Wojtek

465

Relation of Soil Nitrogen, Nitrification and Ammonification to Pot Experiments.  

E-Print Network (OSTI)

............................................ 6 Relation of the Crops to the Total Nitrogen of the Soil ........... 7 Relation of the Different Crops ................................. 8 Relation of Surface Soil to Subsoil ............................. 13 Acid Soils Compared with Non-Acid... of Production of Nitrates to the Results of the Pot Ex- periments ................................................ 21 Extensive Work ............................................ 24 Relation of Nitric Nitrogen to Nitrogen Removed by First Crop .... 24...

Fraps, G. S. (George Stronach)

1921-01-01T23:59:59.000Z

466

QuestionQuestion How does nitrogen deposition affect roadside  

E-Print Network (OSTI)

al. 2004. Concentrations of ammonia and nitrogen dioxide at roadside verges, and their contributionQuestionQuestion How does nitrogen deposition affect roadside plant community composition? 1. Is there a gradient of nitrogen deposition to freeway verges from traffic exhaust? 2. Are there other sources of N

Hall, Sharon J.

467

Tropospheric Reactive Nitrogen Speciation, Deposition, and Chemistry at Harvard Forest  

E-Print Network (OSTI)

and absolute contributions of nitric acid (HNO3) and NOx (nitric oxide (NO) + nitrogen dioxide (NO2)) to totalTropospheric Reactive Nitrogen Speciation, Deposition, and Chemistry at Harvard Forest A thesis. Steven C. Wofsy Cassandra Volpe Horii Tropospheric Reactive Nitrogen Speciation, Deposition

468

Simple approaches for measuring dry atmospheric nitrogen deposition to watersheds  

E-Print Network (OSTI)

'' and spatial variations of gaseous dry N deposition (i.e., nitrogen dioxide (NO2) and ammonia (NH3)), thoughSimple approaches for measuring dry atmospheric nitrogen deposition to watersheds Heather E. Golden the effects of atmospheric nitrogen (N) deposition on surface water quality requires accurate accounts

Elliott, Emily M.

469

A chronology of human understanding of the nitrogen cycle  

Science Journals Connector (OSTI)

...nitrogen and hydrogen gas [7,22,23...process surpassed natural N fixation [31...of the nitrogen cascade was proposed...terrestrial 104 118 --natural - - 30 50 50 170...consequences in the natural environment...2003 The nitrogen cascade. Bioscience 53...anthropogenic trace gases. In Interactions...

2013-01-01T23:59:59.000Z

470

How extensive are the impacts of nitrogen pollution in Great  

E-Print Network (OSTI)

the 1940s atmospheric nitrogen pollution has steadily increased, primarily as a consequence in the deposition of atmospheric nitrogen pollutants are likely to have contributed to improved forest productivityHow extensive are the impacts of nitrogen pollution in Great Britain's forests? Protecting our

471

Special Aspects of Nitrogen Fixation by Blue-Green Algae  

Science Journals Connector (OSTI)

...Aspects of Nitrogen Fixation by Blue-Green Algae Rosalie M. Cox P. Fay When carbon dioxide...required for nitrogen fixation in this alga. A ratio of pyruvate decarboxylation to...independent of photosynthesis in blue-green algae. Special aspects of nitrogen fixation...

1969-01-01T23:59:59.000Z

472

Mitigation of Hydrogen Capacity Losses during Pressure Cycling of the Li3NH System by the Addition of Nitrogen  

Science Journals Connector (OSTI)

Mitigation of Hydrogen Capacity Losses during Pressure Cycling of the Li3NH System by the Addition of Nitrogen ... We attribute this enhancement to the reaction of nitrogen with liquid lithium during cycling as the Gibbs free energy of formation of Li3N (?Go = ?98.7 kJ/mol) is more negative than that of LiH (?Go = ?50.3 ... This triggered intensive research on hydrogen as a renewable fuel because the exhaust gases in hydrogen-powered vehicles mainly contain water vapor. ...

Joshua Lamb; Dhanesh Chandra; Wen-Ming Chien; Delphine Phanon; Nicolas Penin; Radovan C?erny?; Klaus Yvon

2011-06-13T23:59:59.000Z

473

Lyophilic liquid porosimetry and a new liquid autoporosimeter  

SciTech Connect

Lyophilic liquid porosimetry determines the volumes of different size pores by measuring the amount of liquid in these pores, thus, providing pore volume distribution (PVD) data for porous structures. Any liquid that wets the sample may be used. This opens unique opportunities for porous structure evaluation. It provides realistic PVD analysis when the liquid of interest changes the porous structure. It determines uptake/drainage hysteresis of real liquids. It allows direct measurements of uptake and retention capillary pressures with different amounts of liquid in a sample. Lyophilic liquid porosimetry determines liquid/solid contact angles of different size pores within the sample. It can also be used for PVD analysis of both soft, brittle materials and porous metal materials.

Tyomkin, I. [TRI/Princeton, NJ (United States)

1998-12-31T23:59:59.000Z

474

Searching for Cosmic Accelerators via IceCube  

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

Searching for Cosmic Searching for Cosmic Accelerators via IceCube Searching for Cosmic Accelerators via IceCube Berkeley Lab Researchers Part of an International Hunt November 21, 2013 Lynn Yarris, lcyarris@lbl.gov, 510.486.5375 Bert.jpg This event display shows "Bert," one of two neutrino events discovered at IceCube whose energies exceeded one petaelectronvolt (PeV). The colors show when the light arrived, with reds being the earliest, succeeded by yellows, greens and blues. The size of the circle indicates the number of photons observed. (Courtesy of IceCube Lab) In our universe there are particle accelerators 40 million times more powerful than the Large Hadron Collider (LHC) at CERN. Scientists don't know what these cosmic accelerators are or where they are located, but new

475

Progress on a TWP-ICE Monsoon Case Study  

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

25-mb 25-mb large-scale forcing 10-mb large-scale forcing Tracers Future work Progress on a TWP-ICE Monsoon Case Study Ann Fridlind and Andrew Ackerman * NASA GISS thanks to Jon Petch * ECMWF Shaocheng Xie * LLNL TWP-ICE and ACTIVE Science Teams DOE ARM Program and Data Archive NASA Radiation Sciences Program NASA Advanced Supercomputing Division 18th Annual ARM Science Team Meeting 10 March 2008 Outline Introduction 25-mb large-scale forcing 10-mb large-scale forcing Tracers Future work 1 Introduction TWP-ICE monsoon period GISS set-up 2 25-mb large-scale forcing Initial results Comparison with ECMWF forcing style Tropopause moisture analysis 3 10-mb large-scale forcing Tropopause moisture analysis Final results 4 Tracers Measurements Model results 5 Future work Outline Introduction 25-mb large-scale forcing 10-mb large-scale forcing Tracers Future work TWP-ICE monsoon

476

A design protocol for tailoring ice-templated scaffold structure  

Science Journals Connector (OSTI)

...fact that this relationship is based on fundamental principles of ice templating should...freezing protocol. The robust, and fundamental, link between time at equilibrium and...crystal growth and nucleation. In Handbook of industrial crystallization (ed...

2014-01-01T23:59:59.000Z

477

The effect of selective desorption mechanisms during interstellar ice formation  

E-Print Network (OSTI)

Major components of ices on interstellar grains in molecular clouds - water and carbon oxides - occur at various optical depths. This implies that selective desorption mechanisms are at work. An astrochemical model of a contracting low-mass molecular cloud core is presented. Ice was treated as consisting of the surface and three subsurface layers (sublayers). Photodesorption, reactive desorption, and indirect reactive desorption were investigated. The latter manifests itself through desorption from H+H reaction on grains. Desorption of shallow subsurface species was included. Modeling results suggest the existence of a "photon-dominated ice" during the early phases of core contraction. Subsurface ice is chemically processed by interstellar photons, which produces complex organic molecules. Desorption from the subsurface layer results in high COM gas-phase abundances at Av = 2.4...10mag. This may contribute towards an explanation for COM observations in dark cores. It was found that photodesorption mostly gove...

Kalvans, Juris

2015-01-01T23:59:59.000Z

478

Hail ice impact on composite structures at glancing angles  

E-Print Network (OSTI)

ice impacts on woven carbon/epoxy composite panels. Composites: Part A 34 (2003), pp. 25 - 41. Jones, R. , Paul,of Impact Damage in Composites: Some Problems and Answers.

Funai, Sho

2012-01-01T23:59:59.000Z

479

A Reconciled Estimate of Ice-Sheet Mass Balance  

Science Journals Connector (OSTI)

...Reassessment of net surface mass balance in Antarctica...high-resolution surface mass balance map of Antarctica (1979-2010...from ice-sheet-wide velocity mapping . J. Glaciol...J. ., Higher surface mass balance of the Greenland...

Andrew Shepherd; Erik R. Ivins; Geruo A; Valentina R. Barletta; Mike J. Bentley; Srinivas Bettadpur; Kate H. Briggs; David H. Bromwich; Ren Forsberg; Natalia Galin; Martin Horwath; Stan Jacobs; Ian Joughin; Matt A. King; Jan T. M. Lenaerts; Jilu Li; Stefan R. M. Ligtenberg; Adrian Luckman; Scott B. Luthcke; Malcolm McMillan; Rakia Meister; Glenn Milne; Jeremie Mouginot; Alan Muir; Julien P. Nicolas; John Paden; Antony J. Payne; Hamish Pritchard; Eric Rignot; Helmut Rott; Louise Sandberg Srensen; Ted A. Scambos; Bernd Scheuchl; Ernst J. O. Schrama; Ben Smith; Aud V. Sundal; Jan H. van Angelen; Willem J. van de Berg; Michiel R. van den Broeke; David G. Vaughan; Isabella Velicogna; John Wahr; Pippa L. Whitehouse; Duncan J. Wingham; Donghui Yi; Duncan Young; H. Jay Zwally

2012-11-30T23:59:59.000Z

480

Arctic sea ice modeling with the material-point method.  

SciTech Connect

Arctic sea ice plays an important role in global climate by reflecting solar radiation and insulating the ocean from the atmosphere. Due to feedback effects, the Arctic sea ice cover is changing rapidly. To accurately model this change, high-resolution calculations must incorporate: (1) annual cycle of growth and melt due to radiative forcing; (2) mechanical deformation due to surface winds, ocean currents and Coriolis forces; and (3) localized effects of leads and ridges. We have demonstrated a new mathematical algorithm for solving the sea ice governing equations using the material-point method with an elastic-decohesive constitutive model. An initial comparison with the LANL CICE code indicates that the ice edge is sharper using Materials-Point Method (MPM), but that many of the overall features are similar.

Peterson, Kara J.; Bochev, Pavel Blagoveston

2010-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid nitrogen ice" from the National Library of EnergyBeta (NLEBeta).
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481

A Nano Surface Icephobic Coating Delays Ice Formation | GE Global...  

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

health-monitoring sensors, non-icing surfaces, nano-enabled media storage and optoelectronic devices. She enjoys time with her son, exercise and reading. Recent Posts by This...

482

ARM - Lesson Plans: When Floating Ice Melts in the Sea  

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

Questions Does the water overflow when ice melts? Do you think that melting icebergs will make the sea level rise? Do you have any reason to support your answer in question (2)...

483

Rapid Collapse of Northern Larsen Ice Shelf, Antarctica  

Science Journals Connector (OSTI)

...result of perturbed mass balance. (Auth.) Antarctic...shelves Larsen ice shelf mass balance Quaternary remote sensing...Development, domestic wastewater treatment is estimated to cover...Worldwide Desalt-ing Plants Inventory (International...

Helmut Rott; Pedro Skvarca; Thomas Nagler

1996-02-09T23:59:59.000Z

484

Rapid Cooling Using Ice Slurries for Industrial and Medical Applicatio...  

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

to replace chilled-water cooling systems in building complexes. Because of the high energy content of ice slurry, its cooling capacity is many times greater than that of...

485

A phase-space model for Pleistocene ice volume  

E-Print Network (OSTI)

We present a phase-space model that simulates Pleistocene ice volume changes based on Earth's orbital parameters. Terminations in the model are triggered by a combination of ice volume and orbital forcing and agree well with age estimates for Late Pleistocene terminations. The average phase at which model terminations begin is approximately 90 +/- 90 degrees before the maxima in all three orbital cycles. The large variability in phase is likely caused by interactions between the three cycles and ice volume. Unlike previous ice volume models, this model produces an orbitally driven increase in 100-kyr power during the mid-Pleistocene transition without any change in model parameters. This supports the hypothesis that Pleistocene variations in the 100-kyr power of glacial cycles could be caused, at least in part, by changes in Earth's orbital parameters, such as amplitude modulation of the 100-kyr eccentricity cycle, rather than changes within the climate system.

Imbrie, John Z; Lisiecki, Lorraine E

2011-01-01T23:59:59.000Z

486

Ice Concentration Retrieval in Stratiform Mixed-Phase Clouds Using Cloud Radar Reflectivity Measurements and 1D Ice Growth Model Simulations  

Science Journals Connector (OSTI)

Measurements of ice number concentration in clouds are important but still pose problems. The pattern of ice development in stratiform mixed-phase clouds (SMCs) offers an opportunity to use cloud radar reflectivity (Ze) measurements and other ...

Damao Zhang; Zhien Wang; Andrew Heymsfield; Jiwen Fan; Tao Luo

2014-10-01T23:59:59.000Z

487

Ice cores drilled from lake and ocean floors, continents, and ice sheets provide geoscientists with the most extensive and accurate picture of the earth!s  

E-Print Network (OSTI)

zer Ice cores drilled from lake and ocean floors, continents, and ice sheets provide geoscientists produces 30 GB of raw imagery. With the ability to display core sections in high resolution, Corelyzer

Johnson, Andrew

488

Rigid pile response to ice plate and current loads  

E-Print Network (OSTI)

, sea ice scouring, earthquake analysis, and geotechnical considerations in Arctic designs. Arctic offshore engineering research suddenly incr eased during the mid-seventies when the oil industry began exploration for oil in the Beaufort Sea..., sea ice scouring, earthquake analysis, and geotechnical considerations in Arctic designs. Arctic offshore engineering research suddenly incr eased during the mid-seventies when the oil industry began exploration for oil in the Beaufort Sea...

Nolte, John George

2012-06-07T23:59:59.000Z

489

Nitrogen-concentration control in GaNAs/AlGaAs quantum wells using nitrogen ?-doping technique  

SciTech Connect

GaNAs/Al{sub 0.35}Ga{sub 0.65}As multiple quantum wells (MQWs) with nitrogen ?-doping were fabricated on GaAs (100) substrates by plasma-assisted molecular beam epitaxy. High controllability of nitrogen-concentrations in the MQWs was achieved by tuning nitrogen ?-doping time. The maximum nitrogen concentration in the MQWs was 2.8%. The MQWs exhibit intense, narrow photoluminescence emission.

Mano, Takaaki; Jo, Masafumi; Kuroda, Takashi; Noda, Takeshi; Sugimoto, Yoshimasa; Sakuma, Yoshiki [National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan); Elborg, Martin; Sakoda, Kazuaki [National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan and Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577 (Japan)

2014-05-15T23:59:59.000Z

490

Variations in the age of Arctic sea-ice and summer sea-ice extent Ignatius G. Rigor1,2  

E-Print Network (OSTI)

. On time scales of days to weeks, wind stresses from storms produce ridges of sea-ice and areas of openVariations in the age of Arctic sea-ice and summer sea-ice extent Ignatius G. Rigor1,2 and John M] Three of the past six summers have exhibited record low sea-ice extent on the Arctic Ocean. These minima

Rigor, Ignatius G.

491

Viscosity of Liquids  

Science Journals Connector (OSTI)

6 November 1952 research-article Viscosity of Liquids E. N. da C. Andrade The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences. www.jstor.org

1952-01-01T23:59:59.000Z

492

The Viscosity of Liquids  

Science Journals Connector (OSTI)

... of momentum between them. In the case of a gas, Maxwell showed how the viscosity can be derived by considering this momentum as being communicated by molecules transferring themselves bodily ... fulfilment of the conditions postulated in Maxwell's treatment, and the fact that while gas viscosity goes up with temperature liquid ...

E. N. DA C. ANDRADE

1930-04-12T23:59:59.000Z

493

Detonation in Liquid Explosives  

Science Journals Connector (OSTI)

... Laboratory, on the initiative of Dr. A. H. Davis, into the process of detonation in explosives, the programme including a photographic study of the ... in explosives, the programme including a photographic study of the detonation Waves in transparent liquid explosivesthe sensitivity of some of which can be varied by ...

D. CRONEY

1948-09-25T23:59:59.000Z

494

Liquid Natural Gas  

Science Journals Connector (OSTI)

Liquid Natural Gas ... IN A new technique for storing natural gas at the East Ohio Gas Co. plant, Cleveland, Ohio, the gas is liquefied before passing to the gas holders. ... Natural gas contains moisture and carbon dioxide, both of which liquefy before the natural gas and are somewhat of a nuisance because upon solidification they clog the pipes. ...

W. F. SCHAPHORST

1941-04-25T23:59:59.000Z

495

The stickiness of micrometer-sized water-ice particles  

E-Print Network (OSTI)

Water ice is one of the most abundant materials in dense molecular clouds and in the outer reaches of protoplanetary disks. In contrast to other materials (e.g., silicates) water ice is assumed to be stickier due to its higher specific surface energy, leading to faster or more efficient growth in mutual collisions. However, experiments investigating the stickiness of water ice have been scarce, particularly in the astrophysically relevant micrometer-size region and at low temperatures. In this work, we present an experimental setup to grow aggregates composed of $\\mathrm{\\mu}$m-sized water-ice particles, which we used to measure the sticking and erosion thresholds of the ice particles at different temperatures between $114 \\, \\mathrm{K}$ and $260 \\, \\mathrm{K}$. We show with our experiments that for low temperatures (below $\\sim 210 \\, \\mathrm{K}$), $\\mathrm{\\mu}$m-sized water-ice particles stick below a threshold velocity of $9.6 \\, \\mathrm{m \\, s^{-1}}$, which is approximately ten times higher than the stic...

Gundlach, B

2014-01-01T23:59:59.000Z

496

Late pleistocene ice age scenarios based on observational evidence  

SciTech Connect

Ice age scenarios for the last glacial interglacial cycle, based on observations of Boyle and Keigwin concerning the North Atlantic thermohaline circulation and of Barnola et al. concerning atmospheric CO[sub 2] variations derived from the Vostok ice cores, are herein analyzed. Northern Hemisphere continental ice sheets are simulated with an energy balance model (EBM) that is asynchronously coupled to vertically integrated ice sheets models based on the Glen flow law. The EBM includes both a realistic land-sea distribution and temperature-albedo feedback and is driven with orbital variations of effective solar insolation. With the addition of atmospheric CO[sub 2] and ocean heat flux variations, but not in their absence, a complete collapse is obtained for the Eurasian ice sheet but not for the North American ice sheet. We therefore suggest that further feedback mechanisms, perhaps involving more accurate modeling of the dynamics of the mostly marine-based Laurentide complex appears necessary to explain termination I. 96 refs., 12 figs., 2 tabs.

DeBlonde, G. (Canada Center for Remote Sensing, Ottawa, Ontario (Canada)); Peltier, W.R. (Univ. of Toronto, Ontario (Canada))

1993-04-01T23:59:59.000Z

497

Toward a mechanistic modeling of nitrogen limitation on vegetation dynamics  

SciTech Connect

Nitrogen is a dominant regulator of vegetation dynamics, net primary production, and terrestrial carbon cycles; however, most ecosystem models use a rather simplistic relationship between leaf nitrogen content and photosynthetic capacity. Such an approach does not consider how patterns of nitrogen allocation may change with differences in light intensity, growing-season temperature and CO{sub 2} concentration. To account for this known variability in nitrogen-photosynthesis relationships, we develop a mechanistic nitrogen allocation model based on a trade-off of nitrogen allocated between growth and storage, and an optimization of nitrogen allocated among light capture, electron transport, carboxylation, and respiration. The developed model is able to predict the acclimation of photosynthetic capacity to changes in CO{sub 2} concentration, temperature, and radiation when evaluated against published data of V{sub c,max} (maximum carboxylation rate) and J{sub max} (maximum electron transport rate). A sensitivity analysis of the model for herbaceous plants, deciduous and evergreen trees implies that elevated CO{sub 2} concentrations lead to lower allocation of nitrogen to carboxylation but higher allocation to storage. Higher growing-season temperatures cause lower allocation of nitrogen to carboxylation, due to higher nitrogen requirements for light capture pigments and for storage. Lower levels of radiation have a much stronger effect on allocation of nitrogen to carboxylation for herbaceous plants than for trees, resulting from higher nitrogen requirements for light capture for herbaceous plants. As far as we know, this is the first model of complete nitrogen allocation that simultaneously considers nitrogen allocation to light capture, electron transport, carboxylation, respiration and storage, and the responses of each to altered environmental conditions. We expect this model could potentially improve our confidence in simulations of carbon-nitrogen interactions and the vegetation feedbacks to climate in Earth system models.

Xu, Chonggang [Los Alamos National Laboratory (LANL); Fisher, Rosie [National Center for Atmospheric Research (NCAR); Wullschleger, Stan D [ORNL; Wilson, Cathy [Los Alamos National Laboratory (LANL); Cai, Michael [Los Alamos National Laboratory (LANL); McDowell, Nathan [Los Alamos National Laboratory (LANL)

2012-01-01T23:59:59.000Z

498

Air Liquide- Biogas & Fuel Cells  

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

Presentation about Air Liquide's biogas technologies and integration with fuel cells. Presented by Charlie Anderson, Air Liquide, at the NREL/DOE Biogas and Fuel Cells Workshop held June 11-13, 2012, in Golden, Colorado.

499

Improving the Efficiency of Your Process Cooling System  

E-Print Network (OSTI)

Many industries require process cooling to achieve desired outcomes of specific processes. This cooling may come from cooling towers, once-through water, mechanical refrigeration, or cryogenic sources such as liquid nitrogen or dry ice. This paper...

Baker, R.

2005-01-01T23:59:59.000Z

500

Be dating of the Narsarsuaq moraine in southernmost Greenland: evidence for a late-Holocene ice advance exceeding the Little Ice Age  

E-Print Network (OSTI)

in southern Greenland. Southern Greenland warming at w1.5 ka was also concurrent with the end of the Roman Greenland. Other southernmost Greenland ice-margin records do not preclude a pre-LIA ice-margin maximum a late-Holocene pre-LIA maximum was a local phe- nomenon or a regional southern Greenland ice maximum