Restoration of cell size by vegetative cell enlargement in Coscinodiscus wailesii (Bacillariophyceae)
No abstract available.
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Effect of pH on Corrosion Inhibition of Steel by Polyaspartic Acid
Polyaspartic acid, a polymeric form of aspartic acid (C4H7NO4), was examined as a corrosion inhibitor for steel as a function of pH, temperature, and hydrodynamic conditions. The temperature ranged from 25°C to 95°C, and the concentration ranged from < 1 wt% to ~ 10 wt%. Experimental procedures included electro…
Phosphorus Forms in Particle‐Size Fractions of a Toposequence from Northeast Brazil
Abstract A previous study of this toposequence from semiarid northeastern Brazil concluded that processes of P transformation in semiarid tropical landscapes with steep slopes are difficult to describe with concepts developed in temperate regions. In these soils, derived from syenitic rocks, particle‐size fractions re…
Lattice melting at the clearing point in frustrated systems
This communication was stimulated by a meeting of the Sonderforschungsbereich 335, ‘Anisotrope Fluide’ at the Technische Universität Berlin, in December 1994. At this conference we realized that there are some very strong similarities between the melting processes of blue phases, twist grain boundary phases, and cubic…
Intercalation of Pyrene into Alkylammonium-Exchanged Swelling Layered Silicates: The Effects of the Arrangements of the Interlayer Alkylammonium Ions on the States of Adsorbates
ADVERTISEMENT RETURN TO ISSUEPREVArticleIntercalation of Pyrene into Alkylammonium-Exchanged Swelling Layered Silicates: The Effects of the Arrangements of the Interlayer Alkylammonium Ions on the States of AdsorbatesMakoto Ogawa, Tetsuya Wada, and Kazuyuki KurodaCite this: Langmuir 1995, 11, 11, 4598–4600Publication…
Kinetics of Hydrolytic Degradation of Poly(ethylene naphthalene-2,6-dicarboxylate)
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of Hydrolytic Degradation of Poly(ethylene naphthalene-2,6-dicarboxylate)H. Zhang and I. M. WardCite this: Macromolecules 1995, 28, 23, 7622–7629Publication Date (Print):November 1, 1995Publication History Published online1 May 2002Published inissue 1 November 1995h…
An electron-beam microcolumn with improved resolution, beam current, and stability
We have built and tested a 1 keV electron-beam microcolumn that focuses 1 nA of beam current into a 10 nm full width half-maximum beam diameter at a working distance of 1 mm. The electron source is a miniaturized Zr/O/W Schottky field emitter with 150 μA/sr angular emission current density operating at about 1800 K at…
Test of the Peierls-Nabarro model for dislocations in silicon
We show, using an atomistic model with a Stillinger-Weber potential (SWP), that in the absence of reconstruction, the basic assumption of the Peierls-Nabarro (PN) model that the dislocation core is spread within the glide plane is verified for silicon. The Peierls stress (PS) obtained from the two models are in quanti…
Stress‐Strain curves for solid polymers
Abstract In order to provide nw experimetnal facts required for constructing a nonlinear constitutive equationfor solid polymers, some tests wee conducted on amorphous pojymers of polycarbonate and poly(methyl methacrylate) and for a crystalline polymer of polyxymethylene under varous strain paths such as comprssion,…
Preparation and Evaluation of Two‐Dimensional Polymer Films by Chemical Modification of an Alkanethiol Self‐Assembled Monolayer for Protection of Copper Against Corrosion
Preparation and Evaluation of Two‐Dimensional Polymer Films by Chemical Modification of an Alkanethiol Self‐Assembled Monolayer for Protection of Copper Against Corrosion, Itoh, Miki, Nishihara, Hiroshi, Aramaki, Kunitsugu
Atmospheric Corrosion of Copper in a Rural Atmosphere
A field exposure program has been implemented in a rural atmosphere with the primary aim of studying the corrosion mechanisms of sheltered copper. Emphasis has been placed upon the initial corrosion behavior after days, weeks, and months. Two starting dates, one in October and one in April, with different environmenta…
Coupling between Photochromism and Second-Harmonic Generation in Spiropyran- and Spirooxazine-Doped Polymer Films
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCoupling between Photochromism and Second-Harmonic Generation in Spiropyran- and Spirooxazine-Doped Polymer FilmsYomen Atassi, Jacques A. Delaire, and Keitaro NakataniCite this: J. Phys. Chem. 1995, 99, 44, 16320–16326Publication Date (Print):November 1, 1995Publication Hist…
Synthesis, Structure, and Coordination Properties of Silicon-Bridged Macrocycles
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, Structure, and Coordination Properties of Silicon-Bridged MacrocyclesBurkhard Koenig, Martin Roedel, Peter Bubenitschek, Peter G. Jones, and Iris ThondorfCite this: J. Org. Chem. 1995, 60, 23, 7406–7410Publication Date (Print):November 1, 1995Publication History P…
The influence of surface structure on the discotic liquid crystalline alignment. an infrared spectroscopy study
The type of alignment achieved with discotic liquid crystals is important for a number of applications. It is found to depend decisively on the structure of the substrate. Infrared dichroism experiments are used to study the alignment of truxene and triphenylene cores (see Fig.) on amorphous silicon and polycrystallin…
Diffusion of Simple Liquids in Porous Sol-Gel Glass
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDiffusion of Simple Liquids in Porous Sol-Gel GlassN. Koone, Y. Shao, and T. W. ZerdaCite this: J. Phys. Chem. 1995, 99, 46, 16976–16981Publication Date (Print):November 1, 1995Publication History Published online1 May 2002Published inissue 1 November 1995https://pubs.acs.or…
Synthesis, Tuning of the Stereochemistry, and Physical Properties of Cobalt(II) Tropocoronand Complexes
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, Tuning of the Stereochemistry, and Physical Properties of Cobalt(II) Tropocoronand ComplexesB. Scott Jaynes, Linda H. Doerrer, Shuncheng Liu, and Stephen J. LippardCite this: Inorg. Chem. 1995, 34, 23, 5735–5744Publication Date (Print):November 1, 1995Publication…
A magnetic, neutron-diffraction, and Mössbauer spectral study of the Ce2Fe17−xSix solid solutions
The magnetic properties of a series of Ce2Fe17−xSix solid solutions with x equal to 0.0, 0.23, 0.4, 0.6, 0.8, 1.02, 1.98, and 3.20 have been studied by magnetic measurements, neutron diffraction, and Mössbauer spectroscopy. An x-ray-diffraction study indicates that the compounds adopt the rhombohedral Th2Zn17-type str…
Structure and Dynamics of CaAl2O4 from Liquid to Glass: A High-Temperature 27Al NMR Time-Resolved Study
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure and Dynamics of CaAl2O4 from Liquid to Glass: A High-Temperature 27Al NMR Time-Resolved StudyDominique Massiot, Dominique Trumeau, Bruno Touzo, Ian Farnan, Jean-Claude Rifflet, Andre Douy, and Jean-Pierre CouturesCite this: J. Phys. Chem. 1995, 99, 44, 16455–16459P…
Inclusion-Enhanced Optical Yield and E/Z Ratio in Enantiodifferentiating Photoisomerization of Cyclooctene Included and Sensitized by .beta.-Cyclodextrin Monobenzoate
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInclusion-Enhanced Optical Yield and E/Z Ratio in Enantiodifferentiating Photoisomerization of Cyclooctene Included and Sensitized by .beta.-Cyclodextrin MonobenzoateYoshihisa Inoue, Fang Dong, Keiko Yamamoto, Lin-Hui Tong, Hiroshi Tsuneishi, Tadao Hakushi, and Akira TaiCite…
Degradable Hyperbranched Poly(bis(undecenyloxy)methylsilane)s
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDegradable Hyperbranched Poly(bis(undecenyloxy)methylsilane)sAziz M. Muzafarov, Monika Golly, and Martin MoellerCite this: Macromolecules 1995, 28, 24, 8444–8446Publication Date (Print):November 1, 1995Publication History Published online1 May 2002Published inissue 1 Novembe…