Materials Literature
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<div class="htmlview paragraph">The effect of combustion time and combustion variability on performance and emissions was investigated with a single cylinder CFR spark ignition engine using gaseous fuel (propane). A system was developed which allowed the collection of the products of combustion of individual eng…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemistry of 2,2,4,4-tetraphenyloxetan-3-one. Intermediates in the photofragmentation of aryl substituted oxiranesJ. P. Wasacz, M. M. Joullie, U. Mende, I. Fuss, and G. W. GriffinCite this: J. Org. Chem. 1976, 41, 3, 572–574Publication Date (Print):February 1, 1976Publi…
An energy analyser of the uniform magnetic sector type has been built for a 100 kV conventional transmission electron microscope (CTEM), which is equipped with a scanning transmission (STEM) attachment. The analyser has an energy resolution of 2.5 eV and does not degrade the STEM spatial resolution. It is intended pri…
Article Changes of Excess Free Energies in the Crystal Growth Processes of Calcite and Aragonite Due to the Presence of Mg2+ Ions in Solution was published on February 1, 1976 in the journal Zeitschrift für Physikalische Chemie (volume 99, issue 4-6).
Magnetoresistance measurements on single crystals of holmium are reported for the helical antiferromagnetic and conical ferromagnetic phases. Longitudinal and transverse measurements were made with the magnetic field applied in the $a$, $b$, and $c$ planes, including nine different field-current configurations. Data w…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal structure of a condensed phosphatosilicate, oxovanadium(IV) diphosphatomonosilicate, VO(SiP2O8)Catherine E. Rice, William R. Robinson, and Bruce C. TofieldCite this: Inorg. Chem. 1976, 15, 2, 345–348Publication Date (Print):February 1, 1976Publication History Publish…
A scanning-laser-induced voltage (SLIV) technique is used to obtain a high-resolution map or image of the thermovoltage at the surface of thin films of high-melting-point transition metals. The image is produced by displaying, on a cathode ray tube, the surface thermovoltage produced by a pulsed laser beam scanned acr…
The moisture-related properties of a series of cotton-polyester blend broadcloths and sheetings were investigated. The composition of the broadcloth ranged from all-cotton to 68% polyester and 32% cotton, and the sheeting varied from all-cotton to 50% polyester and 50% cotton. The moisture properties measured were dro…
Ceric ammonium nitrate, in aqueous acetic acid buffered with sodium acetate, rapidly oxidizes 2,2′-dipyrromethanes to the corresponding 2,2′-dipyrroketones.
A single measurement of twist is insufficient to typify open-end yarns because the twist (tpi) of the fibers comprising the yarn core is different from those comprising the outer sheath, and both are usually lower than the machine value. The differences may be expressed in terms of a twist gradient which is a function…
The tautomerism of phenylpyruvic acid (PPA) and its sodium salt was investigated. The 1H and 13C spectra of PPA in aprotic solvents and in methanol show almost complete prevalence of the enol form, whereas the keto form prevails only in water. The Z configuration was assigned to the sole enol tautomer present on the b…
Abstract Two principally different molecular structures in the crystalline state are known from the copper (II) complex with 7-hydroxy-4-methyl-5-aza-hept-4-en-2-on. The magnetic susceptibilities of three forms of this compound [α-(CuEIA) 4 , β-(CuEIA) 4 , and β-(CuEIA) 4 ·2 C 6 H 6 ] have been measured in the tempera…
Proton magnetic resonance spectra of three crystalline choline halides have been obtained over a temperature range of 77 to 440 °K. In all of these materials the line shapes are strong functions of temperature with multiple changes observed for each substance. Above 353 °K, the temperature at which a crystal–crystal p…
Eine überraschend einfache Heptalen‐Synthese besteht in der Umsetzung von Azulen ( 1 ) mit Acetylendicarbonsäure dimethylester. Die Ausbeute an ( 2 ) beträgt 15%. Die Synthese ist auch auf alkylierte Azulene anw end bar. Die detaillierte Struktur des Produktes ( 2 ) ergab sich aus einer Röntgenanalyse. magnified image
Abstract The quenching temperature dependence of the magnetic hyperfine fields at the Fe 57 nucleus in magnesium ferrite has been investigated by the Mössbauer effect technique. Since the outer absorption lines are broad and asymmetric, the average magnetic hyperfine field is calculated from the two most inner lines.…
The ferroelasticity of rare earth pentaphosphates, ReP 5 O 14 (Re : La, Ce, Pr, Nd, Sm, Eu, Gd and Tb) which belongs to the species mmmF2/m is studied by DSC, Weissenberg camera and polarizing microscope. Anomaly of heat capacity at the ferroelastic transition point (second order), ferroelastic hysteresis loop, space…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSilver(I)-promoted reactions of strained hydrocarbons. Oxidation vs. rearrangementGerald F. Koser and J. Neil FairclothCite this: J. Org. Chem. 1976, 41, 3, 583–585Publication Date (Print):February 1, 1976Publication History Published online1 May 2002Published inissue 1 Febr…
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text T. Hirschfeld, "Effective quantum efficiency of photodetectors for photon energies much larger than threshold," Appl. Opt. 15, 305-305 (1976) Export Ci…
Reaction in dimethyl sulfoxide of nicotinamide 8-bromoadenine dinucleotide with the disodium salt of 3-mercaptopropionic acid afforded nicotinamide-8-(2-carboxyethylthio)adenine dinucleotide, a new NAD+ analogue functionalized at the adenine C-8 position by an omega-carboxylic side chain. Carbodimide coupling of the l…
The site of crevice corrosion initiation on stainless steels has been investigated. It has been found that the initiation takes place at sulfide inclusions situated at the junction between a covering layer and the free metal surface with a portion of the inclusion covered and the rest exposed to the solution. A mechan…