Search results

From Self-sufficiency
Jump to: navigation, search
  • ...mical properties of a thiazide, lacking the [[benzothiadiazine]] molecular structure.
    567 bytes (62 words) - 09:44, 20 September 2010
  • ...ally active transition-state renin inhibitors. Designed through the use of molecular modeling techniques, it is a potent and specific in vitro inhibitor of huma ...developed orally bioavailable alkyl amines based solely on a computational structure-based design (molecule d)<ref name="ref 1"></ref>.
    5 KB (697 words) - 09:44, 20 September 2010
  • .../10.1126/science.1078239 Abstract]</ref>. These species are of interest as molecular approximations of the cubic diamond framework, terminated with C-H bonds. * [http://www.chevron.com/moleculardiamond/diamondtech/discovery.asp Molecular Diamond Technologies, Chevron Texaco]
    8 KB (1,136 words) - 10:07, 20 September 2010
  • [[Image:Kevlar chemical structure.png|thumb|400px|Para-aramid structure]] ...in 1973. A similar fiber called [[Twaron]] with roughly the same chemical structure was introduced by Akzo in 1978. Due to earlier patents on the production p
    10 KB (1,313 words) - 10:07, 20 September 2010
  • ...llen; J. B. Higgins; and J. L. Schlenkert|title=A New Family of Mesoporous Molecular Sieves Prepared with Liquid Crystal Templates|journal=American Chemical Soc **Other structure-directing agents
    5 KB (655 words) - 10:07, 20 September 2010
  • ...erite) does not correspond the ideal iron(II) hydroxide compound, as their structure is more complex and variable. The natural analogue of iron(II) hydroxide co ...ide can be oxidized by the protons of water to form iron(II,III) oxide and molecular [[hydrogen]].
    5 KB (720 words) - 10:07, 20 September 2010
  • * Early building blocks of [[molecular armor]] * In the inner [[structure]] of the smart [[glove]]s
    4 KB (538 words) - 10:08, 20 September 2010
  • ...class of materials used in [[stealth technology]] to disguise a vehicle or structure from radar detection. A material's absorbency at a given frequency of radar ...n the 20-centimeter radar band the Allies used. The material had a layered structure and was based on [[graphite]] particles and other [[semiconductive]] materi
    7 KB (1,065 words) - 10:08, 20 September 2010
  • ...ype of pulping process used to remove the lignin bonding the original wood structure, thus freeing the fibers for use in paper and [[engineered wood]] products ...[polyethylene]] (PE), eventually with extremely long chains / [[Ultra high molecular weight polyethylene|HMPE]] (e.g. Dyneema or Spectra).
    8 KB (1,192 words) - 10:08, 20 September 2010
  • ...ing to the nature of the [[Chemical bond|bonding]] between their atomic or molecular components. The traditional classification distinguishes four kinds of bond ...ar Force|Weak intermolecular bonding]], which forms '''[[#Molecular_solids|molecular solids]]''' (sometimes anomalously called "covalent solids")
    11 KB (1,614 words) - 10:08, 20 September 2010
  • [[image:Polyvinylidene_fluoride.png|right|thumb|Figure 1: Structure of Poly(vinylidene fluoride)]] ...Junji Watanabe|date=January 22, 2008|title=Unusual Formation of Smectic A Structure in Cross-Linked Monodomain Elastomer of Main-Chain LC Polyester with 3-Meth
    25 KB (3,633 words) - 10:09, 20 September 2010
  • {{dablink|This article is about polymer chemistry. The term "molecular imprinting" is also used to mean [[Imprinting (genetics)|genetic imprinting ...d key" model. The active binding site of an enzyme has a unique geometric structure that is particularly suitable for a substrate. A substrate that has a corr
    3 KB (404 words) - 10:09, 20 September 2010
  • ...l role in determining structure, stability and the interactions of various molecular assemblies. Theoretical approaches<ref>De Gennes, P.-G., Scaling Concepts i ...r more) oppositely charged macroions (e.g. DNA molecule) thus establishing molecular bridges and via its connectivity mediate attractive interactions between th
    10 KB (1,406 words) - 10:09, 20 September 2010
  • *[[Polymer characterization]] is concerned with the analysis of chemical structure and morphology and the determination of physical properties in relation to ...ellulose and other polymers were "colloids", aggregates of molecules small molecular mass connected by an unknown intermolecular force. [[Hermann Staudinger]]
    7 KB (931 words) - 10:09, 20 September 2010
  • <!-- SMILES structure: CC(C)(c8ccc(OCC%13OC%13)cc8)c1cc(Cc2cc(C(C)(c9ccc(OCC%14OC%14)cc9)C)cc(Cc4 ...aviolet]] light with a [[wavelength]] of 365 nm. When exposed, SU-8's long molecular chains [[cross-link]] causing the solidification of the material.
    4 KB (532 words) - 10:09, 20 September 2010
  • ...thylene''' ('''PCTFE''') is a [[fluoropolymer]] with the following monomer structure: Its molecular formula is <nowiki>[</nowiki>[[Carbon|C]][[Fluorine|F]]<sub>2</sub>[[Carbon
    440 bytes (50 words) - 10:09, 20 September 2010
  • ...s controlled by several parameters such as the number of nucleation sites, structure of the polymer molecules, cooling rate, etc. Depending on those parameters, ...y aligned, curved and entangled remain frozen and the solid has disordered structure. However, upon slow cooling, some polymer chains take on a certain ''orderl
    9 KB (1,348 words) - 10:09, 20 September 2010
  • [[Image:polyanhydride structure.jpg|thumb|500px|right|The structure of a polyanhydride molecule with ''n'' repeating units.]] ...ched chains. This class of [[polymers]] is characterized by a crystalline structure, melting temperature range of 50–90&nbsp;°C, and solubility in chlorinat
    10 KB (1,280 words) - 10:09, 20 September 2010
  • <tr><td>[[Molecular mass]]</td><td>200,000 to 100 million Daltons</td></tr> <tr><td>[[Simplified molecular input line entry specification|SMILES]]</td><td>???????</td></tr>
    2 KB (276 words) - 10:09, 20 September 2010
  • [[Image:Parylene-structure.png|300px|right|Parylene]] ...1.4&nbsp;nm<ref>{{cite journal|author=J.J. Senkevich and P.-I. Wang|title=Molecular Layer Chemistry via Parylenes|journal=Chem. Vapor Dep.|doi=10.1002/cvde.200
    8 KB (1,048 words) - 10:09, 20 September 2010
  • ...tage polyoxyethylene content (e.g., L61 = Pluronic with a polyoxypropylene molecular mass of 1,800 g/mol and a 10% [[polyoxyethylene]] content). In the example Because of their [[amphiphilic]] structure, the polymers have [[surfactant]] properties that make them useful in indus
    5 KB (782 words) - 10:09, 20 September 2010
  • ...8</sub>)<sub>n</sub>. It should not be confused with [[polybutene]], a low molecular weight [[oligomer]] with a different [[repeat unit]]. ...f [[1-butene]] using supported [[Ziegler-Natta catalyst]]s. PB-1 is a high molecular weight, linear, [[Tacticity#Isotactic_polymers|isotactic]], and [[Crystalli
    12 KB (1,699 words) - 10:09, 20 September 2010
  • ...valent netpoints which prevent the polymer from reforming its usual coiled structure. The hard to soft segment ratio is often between 5/95 and 95/5, but ideally Polymers in this elastic state with [[number average molecular weight]] greater than 20,000 stretch in the direction of an applied externa
    21 KB (2,974 words) - 10:09, 20 September 2010
  • ...lymers [[crystallinity]], melt and [[glass transition]] temperatures and [[molecular weight]]. Each of these factors needs to be assessed on how they affect the ...er chains into shorter water-soluble fragments. This causes a reduction in molecular weight without the loss of physical properties as the polymer is still held
    8 KB (1,069 words) - 10:09, 20 September 2010
  • Meyers, M.A., et al., "Biological Materials: Structure & Mechanical Properties", Progress in Materials Science, Vol. 53, p. 1 (200 ...epetitive units called [[monomer]]s. Biopolymers often have a well defined structure, though this is not a defining characteristic (example:ligno-cellulose):
    68 KB (9,959 words) - 10:10, 20 September 2010
  • ...]]s, such as [[polyethylene]]. They are not to be confused with the high [[molecular weight]] polymer [[polybutene-1]]. ...The grades are determined mainly by [[molecular weight]], with the higher molecular weight grades having increasing [[viscosity]]. The [[oligomer]] degrades at
    4 KB (554 words) - 10:10, 20 September 2010
  • ==Chemical structure== ...s can reveal how the short chain branches are distributed over the various molecular weights.
    4 KB (482 words) - 10:10, 20 September 2010
  • The melt flow rate (MFR) or [[melt flow index]] (MFI) is a measure of molecular weight of polypropylene. The measure helps to determine how easily the molt An important concept in understanding the link between the structure of polypropylene and its properties is [[tacticity]]. The relative orientat
    25 KB (3,657 words) - 10:10, 20 September 2010
  • [[File:Polyethylenimin.svg|thumb|right|The structure of linear polyethylenimine.]] ...are solids at [[room temperature]] where branched PEIs are liquids at all molecular weights. Linear polyethyleneimines are soluble in hot water, at low pH, in
    4 KB (606 words) - 10:10, 20 September 2010
  • ...''' is a [[homopolymer]] of diallyldimethylammonium chloride (DADMAC). The molecular weight of polyDADMAC is typically in the range of hundreds of thousands of ...John | first = Wilson | last2 = et al. | publication-date = 2002 | title = Structure and Properties of PolyDADMAC for Water Purification| url = http://academic.
    4 KB (452 words) - 10:10, 20 September 2010
  • <tr><td>[[Molecular mass]]</td><td>200,000 to 100 million Daltons</td></tr> <tr><td>[[Simplified molecular input line entry specification|SMILES]]</td><td>???????</td></tr>
    4 KB (523 words) - 10:10, 20 September 2010
  • ...polystyrene blocks in the main picture is 102,000; the inset picture has a molecular weight of 91,000, producing slightly smaller domains. The spacing between d
    11 KB (1,609 words) - 10:10, 20 September 2010
  • ...the reflectance ([[gloss]]), as well as forming a protective coating. The structure of paint consists of [[pigments]] in a matrix of [[resin]]. ...ww.univ-bpclermont.fr/LABOS/lpmm],[http://www.cnep-ubp.com] specialists of molecular photochemistry, to provoke in accelerated controlled conditions the same ch
    12 KB (1,780 words) - 10:10, 20 September 2010
  • | ImageFile = SBR.svg|right|243px|thumb|Chemical structure of styrene-butadiene | Section3 = {{Chembox Structure
    5 KB (640 words) - 10:10, 20 September 2010
  • ==Correlation of chemical structure and electrical conductivity== ...Å, respectively.<ref>{{cite journal|doi=10.1103/PhysRevLett.51.1191|title=Molecular Geometry of cis- and trans-Polyacetylene by Nutation NMR Spectroscopy|year=
    22 KB (3,022 words) - 10:10, 20 September 2010
  • ...que and white (particle size up to a few microns) depending on its crystal structure and particle size. Its monomer (bis-β-hydroxyterephthalate) can be synthes ...several things happen: discoloration, chain scissions resulting in reduced molecular weight, formation of [[acetaldehyde]] and [[cross-link]]s ("gel" or "fish-e
    43 KB (6,272 words) - 10:11, 20 September 2010
  • ...e dendrons like cake slices in green. It also provides a concrete chemical structure showing a [[polymethylmethacrylate]] ([[Poly(methyl methacrylate)|PMMA]]) b | [[Image:Baozhongdenpol2.JPG|upright|alt=chemical structure of a third generation dendronized polymer]]
    5 KB (724 words) - 10:11, 20 September 2010
  • ...s were clusters of small molecules (called [[colloid]]s), without definite molecular weights, held together by an unknown force, a concept known as [[associatio ...n|modified further]] following translation in order to provide appropriate structure and functioning.
    45 KB (6,501 words) - 10:11, 20 September 2010
  • ...molecule antimicrobial agents excel at the diffusion step due to their low molecular weight, while adsorption is better achieved by antimicrobial polymers. The ===Molecular Weight===
    26 KB (3,675 words) - 10:11, 20 September 2010
  • ...last=Chen|first=X|coauthors=Ye, B., Tong, M.|year=2005|title=Metal-organic molecular architectures with 2,2′-bipyridyl-like and carboxylate ligands|journal=Co ...techniques. The mechanisms of [[Molecular self-assembly]] processes on a molecular level are currently being investigated, however it is accepted that coordin
    23 KB (3,302 words) - 10:11, 20 September 2010
  • Repeating chemical structure unit of <br> ==Structure==
    20 KB (2,772 words) - 10:11, 20 September 2010
  • ...ps]] are similar to [[1-Hexene|1-hexene]] or may be longer (see [[chemical structure]] below). ...e to remain oily, [[viscous]] liquids even at lower [[temperature]]s. Low molecular weight poly-''alpha''-olefins are useful as synthetic [[lubricant]]s such a
    4 KB (515 words) - 10:11, 20 September 2010
  • ...y the degree of crystallinity, but also by the size and orientation of the molecular chains. [[File:Polymerketten - amorph und kristallinEN.svg|thumb|The arrangement of molecular chains in amorphous and semicrystalline polymers.]]
    18 KB (2,533 words) - 10:11, 20 September 2010
  • ...ay of representing the [[repeating unit]]. Note, however, that the C−H [[Molecular geometry|bond angles]] are not 90° as this diagram would indicate, but are ...pages=1921|ref=harv}}</ref> In certain circumstances it is useful to use a structure-based nomenclature; in such cases [[IUPAC]] recommends ''poly(methylene)''<
    20 KB (2,802 words) - 10:11, 20 September 2010
  • | IUPACName = poly(oxyethylene) <small>{structure-based}</small>,<br> poly(ethylene oxide) <small>{source-based}</small><ref> ...ethylene oxide (PEO)''' or '''polyoxyethylene (POE)''', depending on its [[molecular weight]], and under the tradename '''Carbowax'''.
    20 KB (2,883 words) - 10:12, 20 September 2010
  • ...nsion of the structure is in nano-scale. Phenomena of fluids in nano-scale structure are discovered to be of different properties in [[electrochemistry]] and [[ ....<ref>Kuo T. C.; Sloan, L. A.; Sweedler, J. V.; Bohn, P. W.; "Manipulating Molecular Transport through Nanoporous Membranes by Control of Electrokinetic Flow: E
    23 KB (3,367 words) - 10:12, 20 September 2010
  • ...le]] liquid consisting of a complex mixture of [[hydrocarbon]]s of various molecular weights, and other [[organic compound]]s, that are found in [[Formation (st ...etals such as [[iron]], [[nickel]], [[copper]] and [[vanadium]]. The exact molecular composition varies widely from formation to formation but the proportion of
    69 KB (9,885 words) - 10:12, 20 September 2010
  • ...ecules of asphalt, because the number of molecules with different chemical structure is extremely large".<ref name="Quddus99">Muhammad Abdul Quddus (1992), p.99 ...ly boiled to get rid of the higher fractions, leaving a material of higher molecular weight which is thermoplastic and when layered on objects, became quite har
    34 KB (5,036 words) - 21:35, 20 September 2010
  • ...sts of a solid phase dispersed in a liquid, the solid particles will not [[Molecular diffusion|diffuse]] through a membrane, whereas with a true solution the di ..., such as excluded volume interactions or electrostatic forces, govern the structure and behavior of colloidal suspensions. For example, the same techniques use
    27 KB (3,735 words) - 10:13, 20 September 2010
  • ...[metal]]s. Understood as the sharing of "free" electrons among a [[crystal structure|lattice]] of positively charged ions ([[cations]]), metallic bonding is som ...n]] and [[thermal analysis]] (initially DTA) made it possible to study the structure of crystalline solids, including metals and their alloys, and the construct
    26 KB (4,024 words) - 10:13, 20 September 2010

View (previous 50 | next 50) (20 | 50 | 100 | 250 | 500)