Dispersibility and stability improvement of graphite nanoplatelets in organic solvent by assistance of dispersant and resin

2009 ◽  
Vol 44 (5) ◽  
pp. 977-983 ◽  
Author(s):  
Tong Wei ◽  
Zhuangjun Fan ◽  
Guilian Luo ◽  
Shanshan Wang ◽  
Liping Song
Keyword(s):  
Organic Solvent ◽  
Graphite Nanoplatelets

STUDIES ON A NON-MELATONIN PINEAL ANTI-GONADOTROPHIN

1972 ◽  
Vol 69 (2) ◽  
pp. 257-266 ◽  
Author(s):  
Bryant Benson ◽  
Mary Jane Matthews ◽  
Alvin E. Rodin
Keyword(s):  
Solvent Extraction ◽  
Organic Solvent ◽  
Pineal Gland ◽  
Gel Filtration ◽  
Test System ◽  
Pineal Body ◽  
Physiological Effects ◽  
Organic Solvent Extraction ◽  
Gland Function

ABSTRACT Continuing investigation of pineal gland function indicates that the anti-gonadotrophic activity of this organ cannot be attributed solely to the postulated hormone melatonin, the concentration of which is negligible in the pineal body compared to quantities required to produce unequivocal physiological effects. A non-melatonin antigonadotrophic substance recently isolated from bovine pineal glands was further purified by organic solvent extraction, ultrafiltration and gel filtration. Studies of partial blockage of compensatory ovarian hypertrophy in unilaterally ovariectomized Charles River CD-1 mice indicated that this substance is significantly more potent than melatonin in this test system.

Organic Solvent-Free Reworkable Photocrosslinking System

2007 ◽  
Vol 2 (2) ◽  
pp. 303-306
Author(s):  
Haruyuki Okamura ◽  
Yoshimi Tajima ◽  
Tadahiro Ohba ◽  
Kanji Suyama ◽  
Masamitsu Shirai
Keyword(s):  
Organic Solvent ◽  
Solvent Free

Enzymatic Synthesis of L-Tryptophan Catalyzed by Tryptophan Synthase in a Water/Organic Solvent Biphase System

2014 ◽  
Vol 32 (8) ◽  
pp. 1405-1410
Author(s):  
Lisheng XU ◽  
Junzhong LIU ◽  
Zhiyuan WANG ◽  
Hongjuan ZHANG ◽  
Wei LIU ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Enzymatic Synthesis ◽  
Tryptophan Synthase

Kinetic Adsorption of Humic Acids Mixture Obtained from Microalgae on Exfoliated Graphite Nanoplatelets

2018 ◽  
Vol 69 (1) ◽  
pp. 191-195
Author(s):  
Elena Radu ◽  
Elena Emilia Oprescu ◽  
Cristina Emanuela Enascuta ◽  
Catalina Calin ◽  
Rusandica Stoica ◽  
...  
Keyword(s):  
Humic Acid ◽  
Humic Acids ◽  
Alkali Treatment ◽  
Exfoliated Graphite ◽  
Acid Mixture ◽  
Acidic Ph ◽  
Graphite Nanoplatelets ◽  
Mixture Concentration ◽  
Ft Ir ◽  
Exfoliated Graphite Nanoplatelets

The dehydration of polysaccharides fraction in the presence of acid catalysts, is a chemical process in which results as secondary product humic matter. In our work, the humic acid mixture was for the first time based on our knowledge extracted from defatted microalgae biomass rich in polysaccharides by standard alkali treatment, followed by precipitation at acidic pH. The dried humic acid mixture has been characterized using infrared spectroscopic measurements (FT-IR). Exfoliated graphite nanoplatelets (xGnP) were used as new adsorbents for this type of humic acids mixture, their adsorption being investigated. The effect of several parameters such as: contact time, concentration of humic acid mixture, concentration of xGnP, temperature and pH of the solutions were studied. The process of adsorption took place with good results, in the following conditions: at a concentration of humic acid mixture of 18.6 mg L-1, an xGnP amount of 0.01 mg in 25 mL of solution, at a temperature of 25 �� and at acidic pH values, in aqueous solution.

Antioxidant Properties of Ginseng (P. ginseng C.A. Meyer) Extracts by Organic Solvent Fractionation

2007 ◽  
Vol 12 (4) ◽  
pp. 267-272 ◽  
Author(s):  
Ji-Sang Kim ◽  
Gap-Soon Moon ◽  
Hyun-Oh Kim ◽  
Young-Soon Lee
Keyword(s):  
Organic Solvent ◽  
Antioxidant Properties ◽  
Solvent Fractionation
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