Results 41 to 50 of about 2,929,619 (236)

Gel chromatographic characterization of immunoreactive adrenocorticotropin in patients with ACTH hypersecretion [PDF]

open access: yes, 1989
We investigated the molecular size of circulating immunoreactive ACTH by gel chromatography in patients with ACTH hypersecretion due to various disorders of the hypothalamic-pituitary-adrenal axis.
A Chatelain   +19 more
core   +1 more source

Comparison of extractable soil carbon and dissolved organic carbon by their molecular characteristics

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2011
The aim of this study was to compare the molecular characteristics of extractable soil carbon from biotopes of the Rašeliník watershed and dissolved organic carbon (DOC) from Rašeliník creek, by using the 0.1M pyrophosphate, 0.01M CaCl2 and Britton ...
Martina Šestauberová   +1 more
doaj   +1 more source

Effect of Degumming Methods on Structure and Properties of Regenerated Antheraea Pernyi Silk Fibroin Films

open access: yesJournal of Natural Fibers, 2022
The extraction of fibroin (degumming) from the silk fibers impacts the properties of silk fibroin. However, the effect of the degumming method on structures and properties of regenerated Antheraea pernyi silk fibroin (ASF) biomaterials has not been ...
Hui Yang   +4 more
doaj   +1 more source

Effect of Chitosan Coating with Different Molecular Weights on the Storage Quality of Postharvest Passion Fruit (Passiflora edulis Sims)

open access: yesShipin gongye ke-ji, 2023
To study the preservation effect of chitosan coating with different molecular weights on postharvest passion fruit, the "Qinmi No.9" was coated with chitosan of molecular weights of 30, 50, 100, 150 and 200 kDa (1.5%, w/v) to determine the quality of ...
Xingyan LI   +7 more
doaj   +1 more source

A Study of Dual Polymer Retention Aids for the Retention on Titanium Dioxide Using the Dynamic Drainage Jar, Minidrinier, and Handsheets [PDF]

open access: yes, 1978
Two types of dual polymer retention aid systems, a low molecular weight, high charge density, cationic polyamine with a high molecular weight, low charge density, cationic polyacrylamide, and the same polyamine with a high molecular weight, highly ...
Null, David E.
core   +1 more source

Phase separation effects and the nematic-isotropic transition in polymer and low molecular weight liquid crystals doped with nanoparticles [PDF]

open access: yes, 2013
Properties of the nematic–isotropic phase transition in polymer and low molecular weight liquid crystals doped with nanoparticles have been studied both experimentally and theoretically in terms of molecular mean-field theory.
Alexey S. Merekalov   +45 more
core   +1 more source

Accurate molecular recognition from the lowest unoccupied molecular orbital

open access: yesScientific Reports
The quantification of the lowest unoccupied molecular orbital level (LUMO) for molecular semiconductors is of great importance, because it determines the charge transport process and hence the performances of diverse electronic devices.
Xuehua Zhou, Shixing Yang, Chao Han
doaj   +1 more source

Strain-rate dependence of mechanical characteristics of PLLA with different MW

open access: yesCurrent Directions in Biomedical Engineering, 2023
Dynamic mechanical properties of polymers for biomedical applications are crucial parameters for development and engineering of new medical devices. Here, the time-dependent material behavior is a key factor for durability.
Fiedler Nicklas   +3 more
doaj   +1 more source

Process of end-capping a polyimide system [PDF]

open access: yes, 1985
A process of endcapping a polyimide system with an endcapping agent in order to achieve a controlled decrease in molecular weight and melt viscosity along with predictable fracture resistance of the molded products is disclosed.
Burks, H. D., Stclair, T. L.
core   +1 more source

Molecular Weight Dependent Kernels in Generalized Mixing Rules

open access: yes, 2000
In this paper, a model is proposed for the kernel in the generalized mixing rule recently formulated by Anderssen and Mead (1998). In order to derive such a model, it is necessary to take account of the rheological significance of the kernel in terms of ...
Friedrich, Christian   +3 more
core   +1 more source

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