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An Electrochemical Technique for Microsectioning Silver

N.Q. Lam、Steven J. Rothman、L. J. Nowicki1972-01-01Journal of The Electrochemical Society

Abstract not Available.

Corrosion Behavior and InhibitionElectrodeposition and Electroless CoatingsAnodic Oxide Films and Nanostructures

Direct measurement of electric field at line conductors during a.c. corona

R.T. Waters、T. E. S. Rickard、W.B. Stark1972-01-01Proceedings of the Institution of Electrical Engineers

An electrostatic-fluxmeter probe has been used to obtain a direct measurement of the electric field at a cylindrical conductor during a.c. corona. For conductor diameters of 1.59, 2 and 2.75 cm, the resultant electric field falls below the onset level for both positive and negative corona. For the positive discharge,…

High voltage insulation and dielectric phenomenaLightning and Electromagnetic PhenomenaAerosol Filtration and Electrostatic Precipitation

Transition-metal chalcogenides with layer structures and features of the filling of their brillouin zones

V. L. Kalikhman、Ya.S. Umanskii1972-01-01Uspekhi Fizicheskih Nauk

Халькогениды переходных металлов со слоистой структурой и особенности заполнения их бриллюэновой зоны, Калихман В.Л., Уманский Я.С.

Chalcogenide Semiconductor Thin FilmsCrystal Structures and PropertiesPhase-change materials and chalcogenides

Constitution of four novel methyl steroid relatives (ring-D aromatic) from the insect repellent plant Nicandra physaloides; X-ray analysis of Nic-10

Michael J. Begley、Leslie Crombie、P. J. Ham 等 4 位作者1972-01-01Journal of the Chemical Society Chemical Communications

Nicandra physaloides(Solanaceae) contains four new methyl steroid, relatives (1)–(4), all containing an aromatic ring D; the constituion of the first is demonstrated by crystallographic analysis using direct methods.

Sesquiterpenes and Asteraceae StudiesPhytochemical Studies and BioactivitiesPhytochemistry and Bioactive Compounds

Structure of Aurasperone C

Hiroshi Tanaka、Pie-Lang Wang、Mitsuo Namiki1972-01-01Agricultural and Biological Chemistry

Aurasperone C (III) shows properties closely related to those of aurasperone B (II) and gave dianhydro compound (V) on hydrochloric acid treatment. Partial methylation of (V) with methyl iodide afforded a monomethyl ether identical with aurasperone A (I). NMR studies, including solvent induced methoxyl shifts, indicat…

Phytochemistry and Biological ActivitiesTraditional and Medicinal Uses of AnnonaceaePhytochemistry and Bioactive Compounds

Phase Stability in Heterogeneous Compositions of Butadiene-Acrylonitrile Copolymer

Vincent R. Landi1972-01-01Rubber Chemistry and Technology

Abstract Multiple glass transitions in emulsion polymerized butadiene—acrylonitrile copolymer at leass than 36% acrylonitrile by weight were studied using the Differential Scanning Calorimeter. The appearance of two rather than one transition was shown to be related to the drift in composition with degree of monomer c…

Polymer crystallization and propertiesMaterial Dynamics and Propertiesbiodegradable polymer synthesis and properties

Surface diffusion of adsorbable gases through porous media

L. A. Roybal、Stanley I. Sandler1972-01-01AIChE Journal

Abstract An activated diffusion, or site‐hopping, mechanism is used to describe surface diffusion of gases through porous media. This analysis provides a useful and accurate method for correlating data at submonolayer coverages on energetically heterogeneous surfaces. The data needed to use this correlation are surfac…

Catalytic Processes in Materials ScienceCarbon Dioxide Capture TechnologiesCovalent Organic Framework Applications

Phase Transformations in Eutectic Gold-Silicon Alloys on Single-Crystal Silicon

Elliott Philofsky、K. V. Ravi、JD Brooks 等 4 位作者1972-01-01Journal of The Electrochemical Society

Phase transformations in eutectic gold‐silicon alloy thin films on single‐crystal silicon substrates have been studied as a function of the rate of cooling from the melt by utilizing metallography, resistivity measurements, and x‐ray and electron diffraction. Cooling at rates <10 3 °C/sec results in the eutectic struc…

Theoretical and Computational PhysicsSolidification and crystal growth phenomenaMagnetic Properties and Applications

Grain size dependence of the deformation behaviour of alpha zirconium

S. Ramani、P. Rodríguez1972-01-01Canadian Metallurgical Quarterly

The influence of grain size on the deformation behaviour of a-zirconium in the temperature range 77° – 443°K has been investigated. The flow stress variation with grain size follows the Hall-Petch equation σ = σi + K d−1/2. Work hardening was found to increase with decrease in grain size; also for any grain size and s…

Microstructure and mechanical propertiesNuclear Materials and PropertiesAdvanced materials and composites

Tellurite des zweiwertigen Mangans, Kobalts und Nickels

M. Trömel、D. Schmid1972-01-01Zeitschrift für anorganische und allgemeine Chemie

Abstract Durch Festkörperreaktionen von TeO 2 mit MnO, CoO bzw. NiO unter N 2 wurden folgende Verbindungen erhalten und durch Röntgen‐Pulverdaten charakterisiert: MTe 6 O 13 (M = Mn, Co), MTe 2 O 5 und M 2 Te 3 O 8 (M = Mn, Ni), MnTeO 3 und M 4 Te 3 O 10 (M = Mn, Co), Mn 2 Te 3 O 8 und Ni 2 Te 3 O 8 kristallisieren mo…

Luminescence Properties of Advanced MaterialsCrystal Structures and PropertiesInorganic Chemistry and Materials

Antiferromagnetic interactions in diamminecopper(II) carbonate

David Y. Jeter、Derek J. Hodgson、William E. Hatfield1972-01-01Inorganic Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAntiferromagnetic interactions in diamminecopper(II) carbonateDavid Y. Jeter, Derek J. Hodgson, and William E. HatfieldCite this: Inorg. Chem. 1972, 11, 1, 185–187Publication Date (Print):January 1, 1972Publication History Published online1 May 2002Published inissue 1 Januar…

Magnetism in coordination complexesOrganic and Molecular Conductors ResearchInorganic Fluorides and Related Compounds

Morphology of Allophane, Imogolite and Halloysite

H. Eswaran1972-01-01Clay Minerals

ABSTRACT: Volcanic ash soils were studied with the scanning electron microscope to observe the morphology and occurrence of aUophane, imogolite and halloysite. Allophane and imogolite in general were randomly distributed indicating aprocess of dissolution and recrystallization. Halloysite is typically associated with…

Clay minerals and soil interactions

The Diffusivity and Solubility of Oxygen in Liquid Tin and Solid Silver and the Diffusivity of Oxygen in Solid Nickel

T. A. Ramanarayanan、Robert A. Rapp1972-01-01OpenAlex

T H E e l e c t r o c h e m i c a l d e t e r m i n a t i o n of the d i f fus iv i ty of oxygen in so l id m e t a l s us ing a s t a b i l i z e d z i r c o n i a s o l i d e l e c t r o l y t e ce l l of c y l i n d r i c a l g e o m e t r y was f i r s t c a r r i e d out by R i c k e r t and S te ine r I who d e…

Metallic Glasses and Amorphous AlloysCopper Interconnects and ReliabilityMetallurgical and Alloy Processes

X-Ray structure analyses and magnetic correlation of four copper(II) complexes

Ekk Sinn、Ward T. Robinson1972-01-01Journal of the Chemical Society Chemical Communications

Magnetic properties of a series of antiferromagnetic binuclear complexes correlate closely with their structures, as determined by single crystal, X-ray diffraction analyses.

Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes

Melting rates of crystalline polymers under shear conditions

D. W. Sundstrom、Chi‐Chang Young1972-01-01Polymer Engineering and Science

Abstract The melting of solids under shear conditions is an important operation in the processing of most thermoplastics. In this study, solid blocks of high density polyethylene were melted on a hot, moving surface over a range of surface temperatures and velocities. The conservation equations for mass, momentum, and…

Polymer crystallization and propertiesNatural Fiber Reinforced CompositesRheology and Fluid Dynamics Studies

Thermal decomposition of alkali metal hexafluorophosphates

Thomas C. Ehlert、Ming-Ming Hsia1972-01-01Journal of Chemical & Engineering Data

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal decomposition of alkali metal hexafluorophosphatesThomas C. Ehlert and Ming-Ming HsiaCite this: J. Chem. Eng. Data 1972, 17, 1, 18–21Publication Date (Print):January 1, 1972Publication History Published online1 May 2002Published inissue 1 January 1972https://pubs.acs…

Thermal and Kinetic AnalysisSilicone and Siloxane ChemistryInorganic Fluorides and Related Compounds

Dimethyl Δ 3 -1,2-diazetine-1,2-dicarboxylate: a new four-membered 6π-ring system

E. E. NUNN、Ronald N. Warrener1972-01-01Journal of the Chemical Society Chemical Communications

Dimethyl Δ3-1,2-diazetine-1,2-dicarboxylate has been prepared by photolysis of the 1 : 1 adduct of 2,5-dimethyl-3,4-diphenylcylopenta-2,4-dienone and 2,3-dimethoxycarbonyl-2,3-diazabicyclo[2,2,0]hex-5-ene; this new ring system formally satisfies the Hückel (4n+ 2) rule, but no pronounced stability was observed, and th…

Porphyrin and Phthalocyanine ChemistryPhotochromic and Fluorescence ChemistryOrganic Chemistry Cycloaddition Reactions

Accurate calculations of properties of the two-tube electrostatic lens. I. Improved digital methods for the precise calculation of electric fields and trajectories

S. Natali、D. Di Chio、C. E. Kuyatt1972-01-01Journal of Research of the National Bureau of Standards Section A Physics and Chemistry

Di g it a l me th ods of hi g h prec is ion ha ve bee n de ve loped for th e c alculation of e lec tri c fi e lds a nd tra jectori es in e lec tros tati c le nses a lld a comput e r prog ra m was wri tt e n to app ly th ese me t hods to th e two-tube le ns . Th e ill c reased prec is ion res uit s fro m til(" use of n…

Scientific Measurement and Uncertainty EvaluationElectron and X-Ray Spectroscopy TechniquesScientific Research and Discoveries