*  Carbon - Wikipedia
Graphite. Main article: Graphite. Commercially viable natural deposits of graphite occur in many parts of the world, but the ... It is present as a powder, and is the main constituent of substances such as charcoal, lampblack (soot) and activated carbon. ... The atoms of carbon can bond together in different ways, termed allotropes of carbon. The best known are graphite, diamond, and ... Amorphous is used for lower value graphite products and is the lowest priced graphite. Large amorphous graphite deposits are ...
  https://en.wikipedia.org/wiki/Carbonaceous
*  Carbon - Wikipedia
It is present as a powder, and is the main constituent of substances such as charcoal, lampblack (soot) and activated carbon. ... The atoms of carbon can bond together in different ways, termed allotropes of carbon. The best known are graphite, diamond, and ... Amorphous is used for lower value graphite products and is the lowest priced graphite. Large amorphous graphite deposits are ... For example, graphite is opaque and black while diamond is highly transparent. Graphite is soft enough to form a streak on ...
  https://en.wikipedia.org/wiki/Carbon
*  Crystallographic defects in diamond - Wikipedia
... nitrogen impurity originates from the atmosphere or from the graphite source. One nitrogen atom per 100,000 carbon atoms will ... The four main nitrogen forms are as follows: The C center corresponds to electrically neutral single substitutional nitrogen ... Voidites are octahedral nanometer-sized clusters present in many natural diamonds, as revealed by electron microscopy. ... Because the nitrogen atoms have five available electrons (one more than the carbon atoms they replace), they act as "deep ...
  https://en.wikipedia.org/wiki/Crystallographic_defects_in_diamond
*  Graphite furnace atomic absorption - Wikipedia
... the amount of light absorbed can be linearly correlated to the concentration of analyte present. Free atoms of most elements ... The main advantages of the graphite furnace comparing to aspiration atomic absorption are the following: The detection limits ... In GFAAS, samples are deposited in a small graphite or pyrolytic carbon coated graphite tube, which can then be heated to ... and nonuniformity of concentration and path length of analyte atoms (in graphite furnace AA). Concentration measurements are ...
  https://en.wikipedia.org/wiki/Graphite_furnace_atomic_absorption
*  Organic compound - Wikipedia
... are also excluded automatically the allotropes of carbon such as diamond and graphite, because they are formed by atoms of the ... The main tools are proton and carbon-13 NMR spectroscopy, IR Spectroscopy, Mass spectrometry, UV/Vis Spectroscopy and X-ray ... covers the scientific literature from 1771 to the present, and is today accessible via Reaxys. Structures and a large diversity ... those natural products with large or stereoisometrically complicated molecules present in reasonable concentrations in living ...
  https://en.wikipedia.org/wiki/Organic_compound
*  Patente US4953234 - Impact resistant helmet - Google Patentes
The present invention is an impact resistant composite and helmet made thereof. The helmet comprises an impact resistant ... that may contain minor amounts of chain branching or comonomers not exceeding 5 modifying units per 100 main chain carbon atoms ... The present invention is directed to a helmet 10 comprising an impact resistant composite shell 12. The design of the present ... Such fibers include but are not limited to asbestos, carbon, graphite, boron, cellulose, alumina, and metal fibers. ...
  http://www.google.es/patents/US4953234?dq=flatulence
*  Patent US6835332 - Process for producing an electrode material for a rechargeable lithium ... - Google Patents
... graphite capable of intercalating lithium ion at intercalation sites of its six-membered network plane provided by carbon atoms ... In the present invention, these compounds can be used either singly or in combination of two or more of the as the compound (a ... 8(1). And there were observed two main peaks one at 2θ=30.2 and another at 2θ=43.6 in the X-ray diffraction chart, having a ... In the present invention, these compounds can be used either singly or in combination of two or more of them as the compound (b ...
  http://www.google.co.uk/patents/US6835332
*  organic chemistry facts, information, pictures | Encyclopedia.com articles about organic chemistry
Graphite, for instance, is just a series of "sheets" of carbon atoms bonded tightly in a hexagonal, or six-sided, pattern, ... The simplest member of the alkane series is methane, CH4, the main component of natural gas. The names of some alkanes are ... These are the hydrocarbons, present in deposits of fossil fuels: natural gas, petroleum, and coal. ... Carbon atoms form strong bonds not only with other carbon atoms but also with atoms of other elements. In addition to hydrogen ...
  https://www.encyclopedia.com/science-and-technology/chemistry/organic-chemistry/organic-chemistry
*  Electronic Properties of Transition Metal Dichalcogenides and Their Intercalation Complexes | SpringerLink
... complexes belong to a large class of the so-called two-dimensional solids in which there is a good deal of interest at present ... Atoms within a layer are bound by strong covalent or ionic forces while individual layers are held together by relatively much ... Dresselhaus, M.S., Dresselhaus, G., Fischer, J.E. and Moran, M.J., 1983, Materials Research Society, Intercalated graphite: ... Skip to main content This service is more advanced with JavaScript available, learn more at http://activatejavascript.org ...
  https://link.springer.com/chapter/10.1007/978-1-4757-5556-5_2
*  US Patent # 9,819,006. Battery - Patents.com
First, to facilitate understanding of the present disclosure, a technical background related to the present disclosure will be ... It may be more desirable to use one including at least a compound in which a part or all of replaceable hydrogen atoms of the ... In the analysis of the waveform, the position of a main peak existing closer to the lowest binding energy is used as an energy ... In particular, graphite may be desirable because of its large electrochemical equivalent and capability of providing high ...
  http://patents.com/us-9819006.html
*  Oxohalide - Wikipedia
... pπ bonding between the metal and oxygen atoms. Oxygen bridges are present in more complex configurations like M(cp)2(OTeF5)2 (M ... They have the general formula AOmXn, X = F, Cl, Br, I. The element A may be a main group element, a transition element or an ... This layered, graphite-like structure results in a relatively low hardness of bismoclite (Mohs 2-2.5) and most other oxohalide ... In relation to the oxide or halide, for a given oxidation state of an element A, if two halogen atoms replace one oxygen atom, ...
  https://en.wikipedia.org/wiki/Oxohalide
*  Intercalation Compounds of Graphite | SpringerLink
Intercalation compounds of graphite are of interest, both scienfically and technologically because of unusual properties that ... This paper will present intercalation compounds of graphite from the point of view of a quest for a synthetic material of high ... This structure, composed of atoms tightly bonded in loosely stacked planes, produces a two dimensionality that yields a high in ... Skip to main content This service is more advanced with JavaScript available, learn more at http://activatejavascript.org ...
  https://link.springer.com/chapter/10.1007/978-1-4684-3480-4_27
*  Organic chemistry - Wikipedia
... and hydrogen atoms can either be notated explicitly or assumed to be present as implied by tetravalent carbon. The depiction of ... The other main classes are amino acids (monomer building blocks of peptides and proteins), carbohydrates (which includes the ... Using a laser to vaporize graphite rods in an atmosphere of helium gas, these chemists and their assistants obtained cagelike ... The principal constituent atoms of organic chemistry - hydrogen and carbon - exist naturally with NMR-responsive isotopes, ...
  https://en.wikipedia.org/wiki/Organic_chemistry
*  New spectroscopic technique may help zero in on Martian life - The Archaeology News Network
For example, graphite is composed of a very orderly arrangement of carbon atoms. The bonds between these carbon atoms vibrate ... A typical spectrum for a sample containing organic matter appears as a curve with two main peaks -- one wide peak, and a ... That is, the higher these sub-peaks, the more hydrogen is present -- an indication that the sample has been relatively less ... naturally, at a frequency that scientists can measure when they focus a laser beam on graphite's surface.. As atoms and ...
  https://archaeologynewsnetwork.blogspot.com/2016/09/new-spectroscopic-technique-may-help.html
*  Transmission Electron Aberration-Corrected Microscope - Wikipedia
In the images of graphene-a single sheet of graphite-not only the atoms, but also the chemical bonds could be observed. A movie ... The project's main activity is design and application of a transmission electron microscope (TEM) with a spatial resolution ... N. Tanaka (2008). "Present status and future prospects of spherical aberration corrected TEM/STEM for study of nanomaterials". ... The filter makes it possible to select electrons scattered by specific chemical elements and so identify individual atoms in ...
  https://en.wikipedia.org/wiki/Transmission_Electron_Aberration-Corrected_Microscope
*  transport chair: April 2011
However, unlayered graphene Could Definitely (hk0) hoops gets present in Any Root As to presolar graphite onions. transmitting ... The main compound of your Mobile phone consists of all the 222 atoms but is considerations to own benzene additional and more ... A Even further main concern would certainly State they experience should Put Help and advice Absolutely bootlegged to make use ... First, microcrystalline graphite Could be helped by a Honestly citrus combination of acidity And as well nitric acid. a number ...
  http://transportchair.blogspot.com/2011/04/
*  Elastic recoil detection - Wikipedia
The difference in the energy δE2 of recoil atoms after collision when two types of atoms differ in their masses by a quantity ... One of the main advantages of silicon detectors is their simplicity. However, they have to be used with a so-called "range foil ... This method does not present the same issues, as those for the silicon detector. However, the throughput of TOF detectors is ... High levels of carbon contamination could be associated with beam excursions on the support, such as a graphite support. This ...
  https://en.wikipedia.org/wiki/Elastic_recoil_detection
*  H carbon 14 dating examples - dating your ex who is married life
One rare form has atoms that are 14 times as heavy as hydrogen atoms: carbon-14, or 14C, or radiocarbon. It cannot be used to ... Radiocarbon dating is one of the main methods used to establish peat In order to determine the age of a sample, the 14C .. CO2 ... 1, 14, 14, 1. n, +, N, →, C, +, H. 0, 7, 6, 1 After this the amount of carbon-14 present in the sample is too small to be ... is reduced to graphite during the reaction with hydrogen at a temperature of 600-630 ºC (depending on.Having postulated the ...
  http://yduarch.com/621-h-carbon-14-dating-examples.php
*  APS -APS March Meeting 2018 - Session Index MAR18
Here we present preliminary results describing outlines of some of the common pathways taken by students, and present a ... Both the atoms and the x-ray radiation used to find them are invisible to the naked eye. Addressing these problems, we have ... The main objective was to expose students into Physics subject matter through hands-on, theory-based experiments. In these ... The trap consists of a pair of transversely magnetized cylindrical magnets and a graphite rod as the trapped object. It serves ...
  http://meetings.aps.org/Meeting/MAR18/Session/H20?showAbstract
*  Atomic spectroscopy - Wikipedia
The type of atoms present in a sample, or the amount of atoms present in a sample can be deduced from measuring these changes ... With the exception of flames and graphite furnaces, which are most commonly used for atomic absorption spectroscopy, most ... In the latter case, the main division is between optical and mass spectrometry. Mass spectrometry generally gives significantly ... The relationship between the concentration of atoms, the distance the light travels through the collection of atoms, and the ...
  https://en.wikipedia.org/wiki/Atomic_spectroscopy
*  Geochronology/Radiocarbon dating - Wikiversity
... this material is present in sufficient quantity for AMS-radiocarbon dating only in cores proximal to the main inlet streams. ... C atoms per gram of ice. For ice still containing all in situ produced 14. C atoms (no escape before pore closure), the 14. C ... "Graphite in various forms has become the standard target for accelerator 14C dating. Graphite has been made by catalytic ... The total production rate of the AD 775 event has been estimated to be 3.9 atoms per square centimeter per second to 6.9 atoms ...
  https://en.wikiversity.org/wiki/Geochronology/Radiocarbon_dating
*  Grape Preservation Using Chitosan Combined with β-Cyclodextrin
The atoms of the glycosidic oxygen are in the same plane. The primary hydroxyl group of residue C6 is located outboard of the ... There is no report about the edible coating of chitosan combined with β-cyclodextrin at present, and we hope to explore a new ... Grape is one of main fruits in the world. Fresh grape usually possesses good commodity properties and long storage time. ... In this assay, we used X-Ray Diffractometer (type of D8 Advance, Bruker Corporation, Germany), which was graphite monochromator ...
  https://www.hindawi.com/journals/ija/2013/209235/
*  Theoretical Studies of the Stone-Wales Defect in C36 Fullerene Embedded inside Zigzag Carbon Nanotube
Here we present a theoretical study of the SW defect formation in the C36 fullerene cage embedded inside the zigzag carbon ... C36s are arranged inside the carbon nanotube so that their symmetry axes are parallel to the main axis of the nanotube. Thus, ... In our simulations carbon nanotube is constructed from 224 carbon atoms. To avoid the dangling bonds hydrogen passivation of ... peapods containing only C60 fullerenes were synthesized in 1998 through the catalytic pulsed laser vaporization of graphite [1 ...
  https://www.hindawi.com/journals/apc/2016/1862959/
*  Shine on you crazy diamond: why humans are carbon-based lifeforms - Scientific American Blog Network
As well as being the main element in organic matter, carbon atoms are the only element in both graphite and diamond. Image ... 1845 - Present. Neuroscience. Evolution. Health. Chemistry. Physics. Technology.. Subscribe Now!. Shine on you crazy diamond: ... Carbon is the main component of sugars, proteins, fats, DNA, muscle tissue, pretty much everything in your body. The reason ... If there were to be silicon-based lifeforms, the sheer chemistry of their atoms means that they would have to be built along ...
  https://blogs.scientificamerican.com/lab-rat/shine-on-you-crazy-diamond-why-humans-are-carbon-based-lifeforms/
*  Phosphorus nutritional deficiency | Article about phosphorus nutritional deficiency by The Free Dictionary
Owing to the characteristic features of their chemical structure, phosphorus atoms, like sulfur atoms, are able to form energy- ... Phosphorus is present in plants and animals. There is over 1 lb (454 grams) of phosphorus in the human body. It is a component ... Physical properties. Elemental phosphorus occurs in several allotropes, the main ones being the white, the red, and the black. ... Another form of phosphorus is black phosphorus, a crystalline electrically conductive material similar to graphite in ...
  https://encyclopedia2.thefreedictionary.com/phosphorus+nutritional+deficiency