Introduction to the algae: structure and reproduction
Very comprehensive text for physiology (algae) and/or limnology (freshwater biology) courses at the junior/senior/grad level.
Materials Literature
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Scavenging of OH Radicals Produced in the Sonolysis of Water
The yield of hydrogen peroxide in the sonication of argon-saturated water was studied in the presence of various solutes. The efficiency of OH radical scavenging is expressed by the reciprocal value of C 1/2, the solute concentration at which the H2O2 yield is decreased by 50 per cent. C 1/2 ranges over several orders…
Preparation and in vitro degradation properties of polylactide microcapsules.
Polylactide (PLA) microcapsules with an average diameter of 1.5μm were prepared by an interfacial deposition technique. The degree of degradation of PLA microcapsules was estimated by determination of the amount of lactic acid as a final product in bulk solution and from the molecular weight distribution of PLA of the…
Cloning, sequencing and expression of subtilisin Carlsberg fromBacillus licheniformis
The gene encoding subtilisin Carlsberg from Bacillus licheniformis has been isolated by molecular cloning using a mixture of synthetic oligonucleotides. The entire nucleotide sequence of the coding sequence as well as 5' and 3' flanking sequences have been determined. The deduced amino acid sequence reveals an N-termi…
Magnetic excitations in crystal-field split 4f systems
A survey is given of magnetic excitations in metallic 4f systems when the crystal-field splitting is comparable to or larger than the magnetic interaction between different sites. Particular emphasis is put on the interaction of crystal-field split rare-earth ions with conduction electrons. A number of physical effect…
The Frank constants of some nematic liquid crystals
We present results for the splay and bend constants, K11 and K33, in two homologous series of nematic compounds, the alkyl- and alkoxy-cyanobiphenyls, and in PAA. They have been obtained in two laboratories using different methods, and the extent to which they agree gives confidence that neither set is significantly a…
Sintering and Mechanical Properties of Stoichiometric Mullite
Stoichiometric mullite powder (3Al 2 O 3 ·2SiO 2 ) prepared by spray pyrolysis and sintered at 1650°C attained 95% of theoretical density. The flexural strength was 360 MPa at room temperature and decreased slightly at 1400°C. A fairly high K Ic value (2.8 MN/m 3/2 ) was obtained. These mechanical properties can be at…
The equilibrium low-temperature structure of ice
Following the discovery of a first-order phase transition in annealed KOH-doped ice at 72 K, which was identified as the order–disorder transition associated with the proton positions, a structural study has now been made. Powder neutron diffraction measurements on KOD-doped D2O above and below the phase transition, t…
Microstructure and formation mechanism of porous silicon
A systematic study is presented of the effects of silicon dopant type, resistivity, current density, and hydrofluoric acid concentration on the formation and properties of porous silicon. Cross-section transmission electron microscopy revealed the presence of two distinct microstructures. The structure formed is deter…
Hydrogen embrittlement and stress corrosion cracking
"Hydrogen embrittlement and stress corrosion cracking." British Corrosion Journal, 20(4), p. 158
Ionic Diffusion in Oxide Glasses
This monograph presents a comprehensive and critical review of the 1074 published work on self-diffusion and chemical diffusion in oxide glasses. Where possible, the results on glasses are compared with those of the corresponding crystalline phases. Other ionic transport processes were also described, like electrical…
Polymer decoration: The orientation of polymer folds as revealed by the crystallization of polymer vapors
Abstract A new technique of decoration of the fold surface of polymer crystals is described. It is similar in methodology to gold decoration, but makes use of vapors of crystallizable polymers, principally polyethylene, as decorating material. Upon condensation and crystallization, the highly anisometric decorating mo…
The> kinetics of industrial crystallization
This is the most comprehensive collection of data on the kinetics of crystallization from solution. This feature alone makes it a valuable addition to the literature on industrial crystallization. It provides a link between crystallization mechanisms and crystallization kinetics. The authors have put much effort into…
Brittle behavior of ductile metals during stress-corrosion cracking
The transgranular stress-corrosion cracking of ductile alloys (and at least one pure metal) leads to a fracture appearance characteristic of cleavage. The experimental and theoretical background of this form of metal failure is reviewed. The discontinuous nature of crack growth in α-brass and copper is demonstrated us…
Mechanisms of arterial graft failure. 1. Role of cellular proliferation in early healing of PTFE prostheses.
Failure of long-term synthetic arterial bypass grafts has been attributed in part to anastomotic stenosis, but the pathologic basis for this has not been determined. Which cells participate in the formation of the stenosis and the relationship between normal healing and the pathologic development of anastomotic narrow…
Purification and properties of H+-translocating, Mg2+-adenosine triphosphatase from vacuolar membranes of Saccharomyces cerevisiae.
H+-translocating, Mg2+-ATPase was solubilized from vacuolar membranes of Saccharomyces cerevisiae with the zwitterionic detergent N-tetradecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate and purified by glycerol density gradient centrifugation. Partially purified vacuolar membrane H+-ATPase, which had a specific activit…
Catalytic oxidation of tritium in wet gas.
Use of precious metal catalyst is recommended in the tritium recovery system because it can oxidize tritium at ambient temperature. The ability to operate at the ambient temperature without preheating and past cooling is a large advantage in the ease of system operation. It is observed in this study, however, that the…
Rb-Sr dating of diagenesis and source age of clays in Upper Devonian black shales of Texas
Research Article| August 01, 1985 Rb-Sr dating of diagenesis and source age of clays in Upper Devonian black shales of Texas JOHN P. MORTON JOHN P. MORTON 1Department of Geological Sciences, University of Texas at Austin, Austin, Texas 78713 Search for other works by this author on: GSW Google Scholar Author and Artic…
Sonolysis of Carbon Dioxide, Nitrous Oxide and Methane in Aqueous Solution
Water was irradiated with ultrasonic waves under an argon atmosphere which contained small amounts of carbon dioxide, nitrous oxide or methane. The yield of the products was measured as a function of the composition of the gas atmosphere. Maximum yields were observed at a few per cent of the added polyatomic gas. No c…
Flexible and heat-processable conductive films of polypyrrole
The electro-oxidation of pyrrole in the presence of anionic polyelectrolytes produces characteristic conductive black films of polymerically doped polypyrrole whose physical properties depend on those of the polyelectrolyte material.