Results 241 to 250 of about 1,424,781 (281)

Synthesis of Macromolecular Substances by Condensation Polymerization and Stepwise Addition Polymerization

2001
Condensation polymerizations (polycondensations) are stepwise reactions between bifunctional or polyfunctional components, with elimination of simple molecules such as water or alcohol and the formation of macromolecular substances. For the preparation of linear condensation polymers from bifunctional compounds (the same considerations apply to ...
Dietrich Braun, Harald Cherdron, Helmut Ritter   +2 more
openaire   +1 more source

MACROMOLECULAR PROPERTIES OF SOIL HUMIC SUBSTANCES: FACT, FICTION, AND OPINION

Soil Science, 1999
A critical review of 'random coil' and 'self-associating aggregate' models and of earlier concepts of the macromolecular structure of humic substances (HS) is undertaken as a result of the development of more recent information and hypotheses.
openaire   +1 more source

AGGREGATION PATTERNS AND MACROMOLECULAR MORPHOLOGY OF HUMIC SUBSTANCES: A FRACTAL APPROACH

Soil Science, 1999
Fractal geometry provides a powerful means for the quantitative description of heterogeneous and highly irregular systems encountered in nature. Humic substances represent a typical class of natural compounds that may be amenable to a fractal description because of their well known physical and chemical heterogeneity and molecular complexity.
openaire   +1 more source

Insight into the roles of soluble, loosely bound and tightly bound extracellular polymeric substances produced by Enterobacter sp. in the Cd2+ and Pb2+ biosorption process: Characterization and mechanism.

Colloids and Surfaces B: Biointerfaces, 2023
Xinwei Shi, Qiujie Ling, Zhiling Jiang, Fengmei Pei, Meifen Xin, Weilan Tan, Xuan Chen, Kehui Liu, Jiangming Ma, Fang-ming Yu, Yi Li   +10 more
semanticscholar   +1 more source

Increased activity of acid phosphatase and beta-glucuronidase in the liver and spleen of mice after intraperitoneal administration of various macromolecular substances.

Biochemical Pharmacology, 1961
A. Meijer, R. Willighagen
semanticscholar   +1 more source

Enlargement of the liver and spleen in mice of the O20 (Amsterdam) strain caused by storage of macromolecular substances—I: The storage of the macromolecular substances dextran and polyvinylpyrrolidone in the liver and spleen

, 1962
A. Meijer
semanticscholar   +1 more source

MECHANISMS OF CHAIN MOTION OF MACROMOLECULAR SUBSTANCES

2020
openaire   +1 more source

Aerobic Sludge Granules: Macromolecular Associations in Extracellular Polymeric Substances [PDF]

, 2010
The application of aerobic sludge granules in secondary activated sludge wastewater treatment processes has the potential to cope with substantially higher hydraulic and organic loading rates compared to the floccular aggregates used in conventional systems. However, very few aerobic full-scale systems use sludge granules globally.
openaire  

The effect of leukocyte hydrolases on bacteria. III. Bacteriolysis induced by extracts of different leukocyte populations and the inhibition of lysis by macromolecular substances.

Journal of Infectious Diseases, 1975
M. Lahav, N. Ne'eman, J. James, I. Ginsburg   +3 more
semanticscholar   +1 more source

Modification of Macromolecular Substances

2006
openaire   +1 more source