Results 21 to 30 of about 163,143 (320)

A pulsed photoacoustic technique for studying red blood cell sedimentation

open access: yesJournal of Biomedical Photonics & Engineering, 2015
This study shows the capability of a pulsed photoacoustic (PA) technique to measure red blood cell sedimentation and aggregation processes in vitro. Red blood cells are the main source of absorption in blood. The PA signal is proportional to the sample’s
Matti Kinnunen
doaj   +1 more source

Kinetic analysis of mechanoradical formation during the mechanolysis of dextran and glycogen

open access: yesBeilstein Journal of Organic Chemistry, 2017
A detailed electron spin resonance (ESR) analysis of mechanically induced free radicals (mechanoradicals) formation of glucose-based polysaccharides, dextran (Dx) and glycogen (Gly) was performed in comparison with amylose mechanoradicals.
Naoki Doi   +5 more
doaj   +1 more source

Influence of Different Polymer Types on the Overall Release Mechanism in Hydrophilic Matrix Tablets

open access: yesMolecules, 2009
The effect of three different types of polymer chain structures on the polymer release from hydrophilic matrix tablets was investigated by comparing a synthetic semi-crystalline linear polymer (PEO), a branched amorphous polysaccharide (dextran) and an ...
Bengt Wittgren   +4 more
doaj   +1 more source

Phospholipid-Dextran with a Single Coupling Point: a Useful Amphiphile for Functionalization of Nanomaterials [PDF]

open access: yesJ. Am. Chem. Soc., 2009, 131 -1-, pp 289, 2009
Nanomaterials hold much promise for biological applications, but they require appropriate functionalization to provide biocompatibility in biological environments. For non-covalent functionalization with biocompatible polymers, the polymer must also remain attached to the nanomaterial after removal of its excess to mimic the high dilution conditions of
arxiv   +1 more source

Evaluation of Polyphenol Content and Antioxidant Activity of Standard Water Kefir

open access: yesChemistry Proceedings, 2023
This study focuses on the polyphenol levels and antioxidant activity in the water kefir beverage after 72 and 96 h of fermentation. The exopolysaccharides (dextran) were extracted from water kefir granules and characterized using Fourier-transform ...
Ecaterina-Andreea Constantin   +4 more
doaj   +1 more source

Using holographic microscopy to measure the effect of confinement on crowding agents in lipid vesicles [PDF]

open access: yes, 2023
The hydrodynamic effects of macromolecular crowding inside cells is often studied in vitro by using polymers as crowding reagents. Confinement of polymers inside cell-sized droplets has been shown to affect the diffusion of small molecules. Here we develop a method, based on digital holographic microscopy, to measure the diffusion of polystyrene ...
arxiv   +1 more source

Lipid Nanoparticles and Their Hydrogel Composites for Drug Delivery: A Review

open access: yesPharmaceuticals, 2018
Several drug delivery systems already exist for the encapsulation and subsequent release of lipophilic drugs that are well described in the scientific literature.
Claire Desfrançois   +2 more
doaj   +1 more source

Starch Wars—New Episodes of the Saga. Changes in Regulations on Hydroxyethyl Starch in the European Union

open access: yesFrontiers in Veterinary Science, 2019
After a safety review of hydroxyethyl starch (HES) solutions in 2013, restrictions on the use of HES were introduced in the European Union (EU) to reduce the risk of kidney injury and death in certain patient populations.
Katja-Nicole Adamik, Ivayla D. Yozova
doaj   +1 more source

Stedies on Dextran

open access: bronzeJournal of the agricultural chemical society of Japan, 1954
Penicillium purpurogenum var. rubri-sclerotium, P. funiculosum, and P. lilacium. cultured in the presence of dextran, produced a powerful dextran-destroying enzyme (dextranase); but a slight enzyme activity was detected in the molds cultured without dextran.
Tsuneo Kobayashi
openalex   +5 more sources

ĐIỀU CHẾ NANO VÀNG TRÊN NỀN DEXTRAN VÀ ỨNG DỤNG XÚC TÁC TRONG PHẢN ỨNG KHỬ 4-NITROPHENOL

open access: yesTạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, 2019
Trong bài báo này, vật liệu nano vàng (AuNPs) được tổng hợp bằng phương pháp khử hóa học sử dụng dextran với vai trò vừa là chất khử vừa là chất bảo vệ.
Tran Van Quang   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy