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Topic: Nitrogen-14

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MSN Encarta - Search Results - Nitrogen Nitrogen Cycle, natural cyclic process in the course of which atmospheric nitrogen enters the soil and becomes part of living organisms, before... Nitrogen, symbol N, gaseous element that makes up the largest portion of the earth's atmosphere. Get 26 more results for 'Nitrogen' with MSN Encarta Premium. encarta.msn.com /Nitrogen.html

It's Elemental - The Element Nitrogen Nitrogen gas is largely inert and is used as a protective shield in the semiconductor industry and during certain types of welding and soldering operations. Nitrogen is obtained from liquefied air through a process known as fractional distillation. Nitrogen was discovered by the Scottish physician Daniel Rutherford in 1772. education.jlab.org /itselemental/ele007.html

Science Project 2003 Nitrogen can be supplied to a plant by any animal manure like steer or chicken manure, concentrated nitrogen, and ammonia. My hypothesis was that plants would grow more massive with a fertilizer with higher percentage number of nitrogen, potassium, and phosphorus in it. The nitrogen that plants take in is changed into protein through a process called nitrogen fixation. www.selah.wednet.edu /SOAR/SciProj2003/AaronE.html

Nitrogen Although nitrogen gas is relatively inert, bacteria in the soil are capable of “fixing” the nitrogen into a usable form (as a fertilizer) for plants. Nitrogen is found in all living systems as part of the makeup of biological compounds. Nitrogen, as a gas is colorless, odorless, and generally considered an inert element. pearl1.lanl.gov /periodic/elements/7.html

Nitrogen - Wikipedia, the free encyclopedia Nitrogen is also used in filling automotive tires due to its realatively flat line of thermal expansion. Nitrogen is used as a coolant both for the immersion freezing of Nitrogen in its liquid state (often referred to as LN) is often used in www.wikipedia.org /wiki/Nitrogen

the dan lee photo repository :: liquid nitrogen :: IMG_0812 the dan lee photo repository :: liquid nitrogen :: IMG_0812 www.csh.rit.edu /~nadman/gallery/pottershouse/IMG_0812

PhysicsWeb - News - Nitrogen tally tests the nebula (May 2001) The present ratio of nitrogen-15 to nitrogen-14 in planets and bodies is an indication of the original ratio of the two isotopes in the early solar system. Together with studies of molecular and ionic reactions, the measurement supports the theory that molecular nitrogen was the dominant form of the element in the early solar system - accounting for over 90% of the total - rather than compounds such as ammonia or hydrogen cyanide. Astronomers also believe that this means the molecular nitrogen in our atmosphere was present when the Earth formed and did not accumulate at a later stage. physicsweb.org /article/news/05/5/12

Howstuffworks "How Carbon-14 Dating Works" It is not uncommon for a cosmic ray to collide with an atom in the atmosphere, creating a secondary cosmic ray in the form of an energetic neutron, and for these energetic neutrons to collide with nitrogen atoms. For example, every person is hit by about half a million cosmic rays every hour. www.howstuffworks.com /carbon-141.htm

CMI Resources - Articles Nitrogen 14 atoms have virtually the same weight and properties as C-14 but nitrogen does not form negative ions whereas carbon does. When the nucleus of a nitrogen atom (atomic mass 14) in the upper atmoshere is hit by a cosmic ray, a neutron is released and the atom becomes subject to the earth's magnetic field and are seen as the Northern Lights in the northern hemisphere; ionized atoms drift to the north magnetic pole and discharge. The object here is to separate all the carbon atoms (C-12, C-13 and C-14) from the nitrogen atoms. www.creationmoments.com /resources/article.asp?art_id=8

Peas and beans get by with more than a little help from friends (14 April 2003) This symbiotic relationship between legumes and rhizobia accounts for around 65% of the global nitrogen that can be used by other plants (when the legume dies) or animals (when the legume is eaten). Plants cannot use nitrogen directly from the atmosphere, but rely on it being converted to a usable form, such as ammonium, in order to use it to make proteins and other essential molecules, including DNA. The research team found that the cycling of amino-acids between the legume and rhizobia was the key driver of the nitrogen fixation process. www.bbsrc.ac.uk /media/pressreleases/03_04_14_nitrogen.html

Radiocarbon Dating Unless the production of carbon 14 was equally greater in the past (either via markedly increased nitrogen 14 and/or radiation), such a huge increase in carbon 12 would dramatically lower the ratio of When Carbon 14 emits a beta particle, the Carbon 14 atom becomes a Nitrogen 14 Atom. Of course, despite the great care taken to avoid contamination, significant levels of carbon 14, when found in fossils supposed to be millions of years old, are still attributed to contamination, background noise, or even production of carbon 14 by the radioactive decay of other closely associated radioactive elements. www.naturalselection.0catch.com /Files/carbon14.html

14-3 Nitrogen, in general, does not react with other chemical species during a combustion process, but its presence affects the outcome of the process because nitrogen absorbs a large proportion of the heat released during the chemical process 14-3 Nitrogen, in general, does not react with other chemical species during a combustion process, but its presence affects the outcome of the process because nitrogen absorbs a large proportion of the heat released during the chemical process. 14-3 Nitrogen, in general, does not react with other chemical species during a combustion process, but its presence affects the outcome of the process because nitrogen absorbs a large proportion of the heat released during the chemical process This is because part of the chemical energy released in the combustion chamber is absorbed and transported out by the nonreacting gases. www.me.udel.edu /meeg308/14.htm

Nitrogen The gas, nitrogen occupies 78 percent of our atmosphere, but it was not known until "mephitic air" was discovered by Daniel Rutherford in Scotland (and others, independently) in 1772. The inability of nitrogen to support combustion was the cause of its discovery and is explored by our students. Isotopes of N: Click mass number for decay process, product for element page. chemlab.pc.maricopa.edu /periodic/N.html

Section 14 Nitrogen is not part of most rocks and minerals; weathering of soil minerals releases very little nitrogen. Nitrogen is the exception, which over time can reach a balance in the soil that may be too low for optimum plant growth. Nitrogen is part of many plant enzymes, proteins, chlorophyll, and other metabolic chemicals. www.marylandseeding.org /msaspc/sec14.htm

Liquid Nitrogen Ice Cream 11-14-98 SPS went to Altoona's Logan Valley Mall November 14, 1998 to sell liquid nitrogen ice cream and do demonstrations involving liquid nitrogen. Several club members and physics professors were also doing liquid nitrogen demonstrations, such as freezing flowers in liquid nitrogen and smashing them, freezing balloons and allowing them to expand, and freezing marshmallows and offering them to mall guests. The club mixed the ice cream ingredients and froze the ice cream using liquid nitrogen. www.clubs.juniata.edu /sps/liqnit.html

Simultaneous Measurement of Denitrification and Nitrogen Fixation Using Isotope Pairing with Membrane Inlet Mass Spectrometry Analysis -- An et al. 67 (3): 1171 -- Applied and Environmental Microbiology Nitrogen gas flux changes during sediment incubation experiments. Nitrogen fixation rates are low in most coastal Nitrogen fixation is a process mediated by microbes that convert N aem.asm.org /cgi/content/full/67/3/1171

Article: Genesis scientists analysing simulated samples | New Scientist Determining the Sun's isotopic ratio may explain why Earth has less of the light isotope nitrogen 14 compared to Jupiter. Scientists hope this primordial composition would reveal how different planets and meteorites evolved such a wide range of isotopes of key elements such as oxygen and nitrogen. Sandwiched between other collectors that "crumpled like the front end of a car", the foil may shed light on the Sun's isotopic composition of nitrogen. www.newscientist.com /news/news.jsp?id=ns99996514

Pixley, Ralph Edward (1957-01-01) The reaction cross section of nitrogen 14 for protons between 220 kev and 600 kev. http://resolver.caltech.edu/CaltechETD:etd-07152004-144605 Pixley, Ralph Edward (1957-01-01) The reaction cross section of nitrogen 14 for protons between 220 kev and 600 kev. The reaction cross section of nitrogen 14 for protons between 220 kev and 600 kev If you have more questions or technical problems, please Contact the Caltech Library System. etd.caltech.edu /etd/available/etd-07152004-144605

save money...don't buy liquid nitrogen (10/14/02) Researchers say over-the-hardware-counter duct tape is a more effective, less painful alternative to liquid nitrogen, which is used to freeze warts. Duct Tape Effective in Wart Removal Mon Oct 14, 4:04 PM ET By DEANNA BELLANDI, Associated Press Writer CHICAGO (AP) - Duct tape, the all-purpose household fix-it with hundreds of uses, can also remove warts. The study was reported in the October issue of the Archives of Pediatrics and Adolescent Medicine. www.pcc.com /lists/pedtalk.archive/0210/00097.html

Gro-Power - The Key To Healthy Soils & Plants Two types of nitrogen for quick green-up and longer term feeding. A specially formulated high nitrogen fertilizer with phosphorus, potash, and sulfur. GRO-POWER HI NITROGEN : A maintenance product designed to feed all types of turf. www.gropower.com /product_pages/high_nitro.htm

Howstuffworks "How Carbon-14 Dating Works" Other useful radioisotopes for radioactive dating include Uranium -235 (half-life = 704 million years), Uranium -238 (half-life = 4.5 billion years), Thorium-232 (half-life = 14 billion years) and Rubidium-87 (half-life = 49 billion years). Potassium-40 is another radioactive element naturally found in your body and has a half-life of 1.3 billion years. The use of various radioisotopes allows the dating of biological and geological samples with a high degree of accuracy. ibs.howstuffworks.com /ibs/houwx/carbon-142.htm

nitrogen 14 concept from the Astronomy knowledge base nitrogen 14 concept from the Astronomy knowledge base Next nitrogen : nitrogen 15 Up : nitrogen Previous nitrogen : nitrogen 13 www.csi.uottawa.ca:4321 /astronomy/nitrogen14.html

Nitrate in soil humic acids revealed by nitrogen-14 nuclear magnetic resonance spectroscopy Abstract: Ecosystem management such as plant residue retention and prescribed burning can significantly affect soil organic matter (SOM) composition and thereby the closely associated (C) and nitrogen (N) cycling processes, which underpin terrestrial ecosystem productivity and sustainability. Humic acid (HA) is an important SOM component and its chemical composition has attracted much attention. members.forestry.crc.org.au /refs/ref9665.htm

How to Get Higher Spring Wheat Protein More Efficiently fromMontana State University Extension Service Nitrogen rate and late-season application effects on yield and protein in 1995 irrigated spring wheat, averaged for three varieties. The most effective and efficient approach for yield and protein in irrigated spring wheat was to make an early-season application of nitrogen targeted to yield potential and based on a soil analysis, and then follow with a nitrogen application at heading to increase grain protein. To benefit from the application, you need to have either an irrigation system or be able to predict, with relatively high accuracy, that you’ll have precipitation after applying the nitrogen. www.montana.edu /wwwpb/pubs/mt9806.html

Time Release Fertilizers at Home Harvest Garden Supply Contains Total Nitrogen 17% (3.70% Ammoniacal Nitrogen; 4.70% Nitrate Nitrogen; 8.6% Urea Nitrogen); Available Phosphorus 14%; Soluble Potash 14%; Total Sulfur 3.8%; Water Soluble Iron 0.15%; Manganese 0.06% (0.00% Water Soluble Manganese). Contains Total Nitrogen 14% (3.0% Ammoniacal Nitrogen; 3.90% Nitrate Nitrogen; 7.1% Urea Nitrogen); Available Phosphorus 14%; Soluble Potash 16%; Total Sulfur 3.8%; Total Iron 0.3% (Water Soluble Iron 0.15%); Manganese 0.06% (0.00% Water Soluble Manganese); Derived from polymer coated ammonium phosphate, polymer coated potassium nitrate, polymer coated urea, ferrous sulfate, ferrous oxide and manganous oxide. Contains Total Nitrogen 18% (8.60% Ammoniacal Nitrogen; 9.40% Nitrate Nitrogen); Available Phosphorus 6%; Soluble Potash 12%; Magnesium (0.0% Water Soluble Magnesium); Boron 0.02%; Water Soluble Copper 0.05%; Water Soluble Iron 0.15%; Water Soluble Manganese 0.06%; Molybdenum 0.0007%. homeharvest.com /timereleasefertilizer.htm

Nitrogen [N] [7] - Chemical element datasheet - Periodic Table of the Elements - ChemGlobe Nitrogen [N] [7] - Chemical element datasheet - Periodic Table of the Elements - ChemGlobe www.vcs.ethz.ch /chemglobe/ptoe/_/7.html

Chemistry : Periodic Table : nitrogen : key information Nitrogen makes up about 78% of the atmosphere by volume but the atmosphere of Mars contains less than 3% nitrogen. Nitrogen is "fixed" from the atmosphere by bacteria in the roots of certain plants such as clover. Nitrogen gas is colourless, odourless, and generally inert. www.webelements.com /webelements/elements/text/N/key.html

Abebooks Search Results - A Theoretical Investigation of the Level Structure of Nitrogen 14 and of the Carbon 14 Abebooks Search Results - A Theoretical Investigation of the Level Structure of Nitrogen 14 and of the Carbon 14 Title: A Theoretical Investigation of the Level Structure of Nitrogen 14 and of the Carbon 14 A theoretical investigation of the level structure of nitrogen-14 & of the carbon 14---nitrogen-14 beta decay. www.abetitles1.com /Title/97081/A+Theoretical+Investigation+of+the+Level+Structure+of+Nitrogen+14+and+of+the+Carbon+14.html

Thymidine - Carbon 14, Carbon 13, Nitrogen 15, and tritium labeled radiochemicals Thymidine - Carbon 14, Carbon 13, Nitrogen 15, and tritium labeled radiochemicals www.moravek.com /CatalogFiles/Thymidine.htm

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