Structural phase transitions in Rb3H(SeO4)2 single crystals
It is well known that Rb3H(SeO4)2 experiences two reversible phase transitions I↔II (at 606 K) and II↔III (at 448.5 K) /1,2/.
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Durability of Firefighters' Protective Clothing to Heat and Light
Fabrics used in firefighters' protective clothing were exposed to simulated sunlight from a xenon are Weather-Ometer and heat in a forced air circulating oven, and the resulting changes in properties were measured (color, tearing strength, flame resistance and thermal protective performance). The thermal shrinkage and…
Corrosion behaviour of structural materials in sodium influenced by formation of ternary oxides
Abstract Fast breeder reactors use liquid sodium metal as the coolant in their primary and secondary circuits. Corrosion behaviour and compatibility of structural materials in sodium at the operating temperature of the reactors has been found to be influenced by oxygen impurity in sodium even at parts per million leve…
Penetration of Nylon Ballistic Panels by Fragment-Simulating Projectiles
The purpose of this report is to present evidence supporting the thesis that the major mode of penetration of nylon ballistic panels by fragment-simulating projectiles is a cutting, shearing mechanism: Shear forces required for yarn failure are usually less than tensile forces. Penetration is always at a slight angle,…
Kinetics of the Internal Oxidation of (Mg, Fe)O Solid Solutions
Single crystals of Mg 1‐ x Fe x O, x = 0.01, have been oxidized in air at temperatures between 1146 and 1389 K to determine the kinetics of the internal oxidation reaction. A two‐phase region composed of MgFe 2 O 4 precipitates in a (Mg, Fe)O matrix grows inward from the surface as the reaction progresses. The thickne…
Cis and trans olefin radicals: equilibrium and photoisomerization
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCis and trans olefin radicals: equilibrium and photoisomerizationT. W. Ebbesen, R. Akaba, K. Tokumaru, M. Washio, S. Tagawa, and Y. TabataCite this: J. Am. Chem. Soc. 1988, 110, 7, 2147–2151Publication Date (Print):March 1, 1988Publication History Published online1 May 2002P…
The Crystal and Molecular Structure of Aquachloro (meso-tetraphenylporphyrinato)cobalt(III)
Abstract The crystal and molecular structure of the title compounds, [CoIIICl(tpp)(H2O)], has been determined by means of X-ray diffraction techniques. The compound crystallizes in the monoclinic system; space group P21⁄c. The unit cell has a=13.542(2), b=25.760(2), c=10.423(1) Å, β=99.33(2)°, and Z=4. The cobalt atom…
High-pressure study on intramolecular excimer formation of 1,3-di-1-pyrenylpropane in various solvents
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-pressure study on intramolecular excimer formation of 1,3-di-1-pyrenylpropane in various solventsKimihiko. Hara and Hiroyuki. YanoCite this: J. Am. Chem. Soc. 1988, 110, 6, 1911–1915Publication Date (Print):March 1, 1988Publication History Published online1 May 2002Publ…
Linear and quadratic magnetoelectric effect in boracite Co 3 B 7 0 13 Br
Linear and quadratic magnetoelectric (ME) effects have been simultaneously detected in Co-Br boracite(Co3B7O13 Br) ME coefficients a23, a32 and B311. have been measured versus temperature. The results are consistent with the symmetry m′m2′ down to 4 K.
Detection of the Fe-O-O-Fe intermediate in the oxidation reaction of ferrous porphyrins by resonance Raman spectroscopy
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetection of the Fe-O-O-Fe intermediate in the oxidation reaction of ferrous porphyrins by resonance Raman spectroscopyInsook R. Paeng, Hideaki. Shiwaku, and Kazuo. NakamotoCite this: J. Am. Chem. Soc. 1988, 110, 6, 1995–1996Publication Date (Print):March 1, 1988Publication…
The microstructure of stabilized fibers
Abstract The morphology and microstructure of a stabilized fiber, nonburning fiber, has been investigated under optical and electron microscopes, and a model for the structure of the stabilized fiber is presented. Skin‐core morphology was found in the cross section of the stabilized fiber. The proposed model is consis…
Left atrial compression by a mediastinal bronchogenic cyst presenting with paroxysmal atrial fibrillation.
Mediastinal bronchogenic cysts develop from abnormal budding of the primitive tracheobronchial tree. They are usually located in the mediastinum at the level of the tracheal bifurcation. In adults they are frequently asymptomatic and are discovered incidentally on the chest radiograph. As they enlarge they may cause s…
Anisotropic mechanical properties of a polymer nematic liquid crystal
A concentration dependence of elastic and viscous properties of nematic poly-\ensuremath{\gamma}-benzyl glutamate (PBG) was studied experimentally. The splay and bend constants are similar in magnitude, both linear in concentration. The twist constant is much smaller and constant. Viscosities exhibit large anisotropie…
Conversion Electron Mössbauer Spectrometric Study of Corrosion Products of Iron Immersed in Sodium Chloride Solution
The corrosion products of iron formed in 3% sodium chloride solution under various conditions of temperature, pH values of the solution, concentrations of dissolved oxygen, and durations of immersion were analyzed by conversion electron Mössbauer spectrometry (CEMS) at room and dry ice temperatures (297 and 200 K), pa…
Comparison of the translational diffusion of large spheres and high-molecular-weight coils in polymer solutions
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of the translational diffusion of large spheres and high-molecular-weight coils in polymer solutionsWyn Brown and Roger RymdenCite this: Macromolecules 1988, 21, 3, 840–846Publication Date (Print):March 1, 1988Publication History Published online1 May 2002Publishe…
Pressure dependence of the first sharp diffraction peak in chalcogenide and oxide glasses
X-ray diffraction patterns of GeS2 and GeO2, glasses under pressure up to 100 kbar have been measured in order to examine their medium-range structure. Qualitative differences have been found between the pressure dependences of the first sharp diffraction peaks, suggesting distinct glassy structures. The first peak in…
SUCCESSFUL ENGRAFTMENT OF HIGH-RISK CORNEAL ALLOGRAFTS WITH SHORT-TERM IMMUNOSUPPRESSION WITH CYCLOSPORINE
Department of Ophthalmology University Hospital Division of Clinical Immunobiology Department of Internal Medicine University of Innsbruck Austria
NMR of silk fibroin. 8. Carbon-13 NMR analysis of the conformation and the conformational transition of Philosamia cynthia ricini silk fibroin protein on the basis of Bixon-Scheraga-Lifson theory
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNMR of silk fibroin. 8. Carbon-13 NMR analysis of the conformation and the conformational transition of Philosamia cynthia ricini silk fibroin protein on the basis of Bixon-Scheraga-Lifson theoryTetsuo Asakura, Hitoshi Kashiba, and Hiroaki YoshimizuCite this: Macromolecules…
Protection and polymerization of functional monomers. 11. Synthesis of well-defined poly(4-vinylbenzoic acid) by means of anionic living polymerization of 2-(4-vinylphenyl)-4,4-dimethyl-2-oxazoline
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProtection and polymerization of functional monomers. 11. Synthesis of well-defined poly(4-vinylbenzoic acid) by means of anionic living polymerization of 2-(4-vinylphenyl)-4,4-dimethyl-2-oxazolineAkira Hirao, Yoshiaki Ishino, and Seiichi NakahamaCite this: Macromolecules 19…
Studies on process variables for natural fiber composites—effect of polyesteramide polyol as interfacial agent
Abstract A systematic study of the process variables for polyester composites based on different natural fibers like jute, sisal, ramie, and pineapple has been made with a view to determine the most suitable processing conditions for such composites. Effect of polyesteramide polyol (PEAP) as interfacial agent in such…