Search Results - (Author, Cooperation:R. L. Anderson)

2011-03-19

American Association for the Advancement of Science (AAAS)

0036-8075

1095-9203

Biology

Chemistry and Pharmacology

Computer Science

Medicine

Natural Sciences in General

Physics

Actin Cytoskeleton/metabolism ; Actins/metabolism ; Adenosine Triphosphatases/metabolism ; Adenosine Triphosphate/metabolism ; Adrenergic beta-Agonists/pharmacology ; Allosteric Regulation ; Animals ; Binding Sites ; Calcium/metabolism ; Cardiac Myosins/chemistry/*metabolism ; Cardiac Output/drug effects ; Dogs ; Female ; Heart Failure, Systolic/*drug therapy/physiopathology ; Isoproterenol/pharmacology ; Male ; Myocardial Contraction/*drug effects ; Myocytes, Cardiac/*drug effects/physiology ; Phosphates/metabolism ; Protein Binding ; Protein Conformation ; Protein Isoforms/chemistry/metabolism ; Rats ; Rats, Sprague-Dawley ; Urea/*analogs & derivatives/chemistry/metabolism/pharmacology ; Ventricular Function, Left/drug effects

2016-02-26

American Association for the Advancement of Science (AAAS)

0036-8075

1095-9203

Biology

Chemistry and Pharmacology

Computer Science

Medicine

Natural Sciences in General

Physics

1365-3083

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Lymphocytes obtained from two donors who were producing anti-D were transformed with Epstein-Barr virus and grown in tissue culture. The lymphoblasts from both donors produced anti-D antibody, which agglutinated Rh-positive cells in saline. Both antibodies belonged to the IgM class; the concentration of anti-D in the culture fluid from one of the donors was approximately 250–500 ng/ml and bound firmly to Rh-positive cells with a functional affinity constant of approximately 1 × 109 M−1.

Electronic Resource

1752-1688

Blackwell Publishing Journal Backfiles 1879-2005

Architecture, Civil Engineering, Surveying

Geography

: Rapid population growth in the metropolitan area of Denver, Colorado, is causing conflicts over water use. Two cities, Thomton and Westminster, have begun condemnation proceedings against three irrigation companies to secure agricultural water rights for municipal use. This is the first condemnation proceeding against irrigation water rights for municipal use. Should the suit succeed, over 30,000 acres of presently irrigated land will lose its water supply. There are about four hundred landowners in the area; two hundred of these are commercial farmers, including truck, dairy and specialty farms. Total agricultural production amounts to about $8 million per year. About 561 jobs related to agriculture will disappear along with about $4 million in not income.Only 6.4 percent of the farmland along the Front Range is irrigated. Continued urban growth will put pressure on the water supply of much of this land. The interested parties of the region should cooperate to lessen the impact of urban growth on agricultural lands and water by forming a metropolitan water district. Such a district could share costs of development of additional municipal water and develop systems where municipalities would recycle waste water back to the irrigated lands.

Electronic Resource

1752-1688

Blackwell Publishing Journal Backfiles 1879-2005

Architecture, Civil Engineering, Surveying

Geography

Electronic Resource

1365-3083

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Following stimulation with autologous or allogeneic lymphoblastoid cell lines (LCL) human T lymphocytes acquire two properties which suggest that LCL act as polyclonal activators. Cytotoxic activity, which has an antigen-specific component, is produced towards normal lymphocytes and LCL, and the cells become capable of mounting proliferative responses to antigens on human B lymphocytes which have accelerated secondary-type kinetics. Only weak responses to autologous cells occur. In addition, repeated restimulation with the original LCL leads to a progressive increase in the number of cells in the culture for a period of about 4 weeks. This approach may prove a useful way to grow large numbers of human T lymphocytes for further study.

Electronic Resource

1476-4687

Nature Archives 1869 - 2009

Biology

Chemistry and Pharmacology

Medicine

Natural Sciences in General

Physics

[Auszug] Cross-bred chicks from a commercial hatchery were rendered deficient in copper in two weeks by feeding the following diet : non-fat milk solids, 55 per cent ; glucose-monohydrate, 40 per cent; cotton-seed oil, 2 per cent; glycine, 0.6 per cent; L-arginine mono-hydrochloride, 0.5 per cent; ...

Electronic Resource

1752-1688

Blackwell Publishing Journal Backfiles 1879-2005

Architecture, Civil Engineering, Surveying

Geography

The abundant, high-quality waters of the Yellowstone River Basin have fostered a strong agricultural-based economy in eastern Montana. The region also contains the nation's largest strippable coal reserves. Numerous conflicts have developed around the mining of coal and in-state conversion of coal into electricity and synthetic fuels – processes that require large volumes of water. Competition for water among industrialists, agriculturalists, and others is a critical state issue. Probable effects of increased water diversions, the nature of water-energy conflicts, and state efforts to control development are discussed.

Electronic Resource

1432-0789

Key words Arbuscular mycorrhizal fungi ; Glycoprotein ; Sustainable agriculture ; Cropping systems ; Aggregate stability

Springer Online Journal Archives 1860-2000

Biology

Geosciences

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Abstract  Land productivity, along with improvement or maintenance of soil health, must be evaluated together to achieve sustainable agricultural practices. Winter wheat-fallow (W-F) has been the prevalent cropping system in the central Great Plains for 60 years where moisture is a limitation to crop production. Alternative cropping systems show that producers can crop more frequently if residue management and minimum tillage are used. The impact of different crops, crop rotations and tillage management practices on soil quality was assessed by measuring aggregate stability and glomalin production by arbuscular mycorrhizal (AM) fungi in soil from cropping trials established in 1990. Crops were wheat (W), corn (C), proso millet (M), and sunflower (S). Rotations sampled were W-F, W-C-M, W-C-M-F, W-C-F, and W-S-F. In the same area as the cropping trials, soils were taken from a perennial grass (crested wheatgrass) and from a buffer area that had been planted to Triticale for the past 2 years but prior to that had been extensively plowed for weed control. We found that aggregate stability and glomalin were linearly correlated (r=0.73, n=54, P〈0.001) across all treatments sampled. Highest and lowest aggregate stability and glomalin values were seen in perennial grass and Triticale soils, respectively. Aggregate stability in W-S-F was significantly lower than in the other crop rotations (P≤0.03), while W-C-M had significantly higher glomalin than the other rotations (P〈0.05). Differences between crop rotations and the perennial grass indicate that selected comparisons should be studied in greater detail to determine ways to manage AM fungi to increase glomalin and aggregate stability in these soils.

Electronic Resource

1573-0530

Springer Online Journal Archives 1860-2000

Mathematics

Physics

Abstract The purpose of this paper is to establish the group theoretical nature of Bäcklund transformations admitted by evolution equations. This result can be easily extended to other types of equations.

Electronic Resource

1573-0530

Springer Online Journal Archives 1860-2000

Mathematics

Physics

Abstract Bäcklund transformations for several nonlinear field equations in four-dimensional space-time relating two solutions of the same equation (symmetry), or two different equations (dynamical), are given. These transformations can be used to generate new families of solutions and infinitely many conservation laws for nonlinear equations. Bäcklund transformations and solutions of nonlinear equations have been studied extensively in one-space and one-time dimension. We give here a fairly general method for a class of equations in four-dimensional space-time which paves the way for many further generalizations.

Electronic Resource

1573-0530

Springer Online Journal Archives 1860-2000

Mathematics

Physics

Abstract The group theoretical structure shown by Lie to underlie systems of ordinary differential equations having a superposition rule, is used to explicitly derive such rules for Riccati equations associated to projective and conformal group actions.

Electronic Resource

1573-0530

Springer Online Journal Archives 1860-2000

Mathematics

Physics

Abstract Analytic linearization maps (resp., inverse linearization maps) in the sense of Flato, Pinczon and Simon are constructed for the Benjamin-Ono equation. These maps have a simple structure, referred to as their recursivity. This recursivity leads to the construction of Lax pairs and Gelfand-Levitan-type equations.

Electronic Resource

1573-0530

Springer Online Journal Archives 1860-2000

Mathematics

Physics

Abstract We linearize the nonlinear space-time translation Lie algebra for the Benjamin-Ono equation. This permits the construction of global nonsoliton solutions.

Electronic Resource

1572-9486

Springer Online Journal Archives 1860-2000

Physics

Abstract The algebraic structure of exactly solvable equations is reviewed and results are reported which 1) establish that isospectral eigenvalue problems yield hereditary symmetries for bi-Hamiltonian equations and 2) show that if both an equation and its “modified” equation have known Hamiltonian formulations then their hereditary symmetries and bi-Hamiltonian formulations are readily obtained via their Miura transformation.

Electronic Resource

1432-0703

Springer Online Journal Archives 1860-2000

Energy, Environment Protection, Nuclear Power Engineering

Medicine

Abstract Application of the organophosphorus insecticide temephos to a natural pond in central Minnesota was followed by reduction within 24 hr in all cladocerans, inDiaptomus leptopus and inChaoborus americanus, and increases in cyclopoid copepods, copepod nauplii and the rotiferKeratella cochlearis. Daphnia pulex that reappeared 35 days post-application were ex-ephippial. After application, reproduction of cladocerans andDiaptomus was markedly reduced compared to the previous year, an effect attributed to temephos.Daphnia population density was strongly reduced into the fall season, long after the spring applications, compared with both a reference pond's and the previous season's populations. On-site bioassays demonstrated 24-hr mortalities ofDaphnia andChaoborus that were comparable to the population decreases in the pond. Laboratory toxicity tests showedDaphnia was the most sensitive followed byChaoborus andDiaptomus. Comparable results were seen in the pond population changes,in situ bioassays and laboratory toxicity data forDaphnia and forChaoborus, but sensitivities in the pond were somewhat greater than in the laboratory. Risk assessment research calls for long-term field reproduction analysis to avoid a false “recovery” report, combined with laboratory life cycle analysis and short acute exposure tests.

Electronic Resource

1573-4803

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Abstract The reactions of polycrystalline Na β″-alumina with CO2 and H2O were investigated using infrared reflectance methods. These reactions result in the replacement of Na+ ions with H3O+ ions and the formation of a scale of NaHCO3 or hydrated Na2CO3 on the surfaces of ceramic specimens. The composition of the scale formed depends on the pressures of CO2 and H2O: NaHCO3 forms at high CO2 pressure while Na2CO3 · XH2O forms at low CO2 pressures. The H3O+ ions dislocate by an endothermic process to produce OH− species in the conduction layers of the grains. The removal of these species by H2O evolution at high temperature implies that an irreversible change occurs in the composition of the surface region of the ceramic.

Electronic Resource

0006-3525

Chemistry ; Polymer and Materials Science

Wiley InterScience Backfile Collection 1832-2000

Chemistry and Pharmacology

A model for the hydration behavior of human stratum corneum has been developed from measurements on in vitro samples isolated in a manner which minimized tissue treatment and trauma. Water sorption/desorption rate measurements as a function of water activity, temperature, and tissue integrity are reported. These data, together with thermodynamic data (infrared and nmr results reported earlier) are consistent with a model in which rapidly sorbed/desorbed water (ca. 0.5 mg water/mg stratum corneum) is associated with (“bound” by) the tissue, while slowly sorbed/desorbed “free” water (up to 12 mg water/mg stratum corneum) is kinetically restricted and probably intracellular in location. Both equilibrium water binding and desorption kinetic data suggest structural changes of this cellular water barrier upon hydration. Evidence for hysteresis in water sorption isotherms (reported by others) could not be reproduced.

7 Ill.

Electronic Resource