Results 31 to 40 of about 133,066 (344)

Application of Gel-Permeation Chromatography for Determination of Organic Pollutants in Brewing Barley.

Kvasný průmysl, 2002
A  method   was  developed  that   enables,  within  one extraction  step,  to  determine  nine  polycyclic  aromatic hydrocarbons    (PAH)   -    benzo(a)anthracene,   chrysene, benzo(b)fluoranthene,  benzo(k)fluoranthene, benzo(a)pyrene, dibenzo(a,h ...
T. HORÁK, M. JURKOVÁ, J. ČULÍK, P. ČEJKA, V. KELLNER   +4 more
doaj   +1 more source

Determination of Δ9 -tetrahydrocannabinol in hempseed oils by gel permeation chromatograph-high performance liquid chromatography method

Zhongguo shipin weisheng zazhi, 2021
Objective A method for determination of Δ9-tetrahydrocannabinol(Δ9-THC) in hempseed oil by gel permeation chromatograph-high performance liquid chromatography(GPC-HPLC) method was developed.
Lilin WU, Qingqiang TANG, Di CHEN, Ying ZHANG, Fang YANG   +4 more
doaj   +1 more source

Chemical Synthesis of Sulfated Yeast (Saccharomyces cerevisiae) Glucans and Their In Vivo Antioxidant Activity

Molecules, 2017
The effects of sulfation of yeast glucans was optimized using response surface methodology. The degree of sulfation was evaluated from 0.11 to 0.75 using ion-chromatography. The structural characteristics of SYG (sulfation of yeast glucans) with a DS = 0.
Hua Zhang, Jing Zhang, Ziluan Fan, Xintao Zhou, Lin Geng, Zhenyu Wang, Joe M. Regenstein, Zhiqiang Xia   +7 more
doaj   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Extraction and purification of lipoteichoic acid from group A Streptococcus and its antitumor activity

浙江大学学报. 农业与生命科学版, 2010
To evaluate the antitumor activity of group A streptococcal lipoteichoic acid (LTA), LTA was extracted and purified by gel permeation chromatography (GPC) from group A Streptococcus, and its molecular structure was analyzed by gas chromatography and ...
BAI Ying, SUN Min, QIU Fang-ping, WANG Zhi-bing   +3 more
doaj   +1 more source

Study on the Rheological Properties of Formic Acid Lignin Modified Asphalt

Buildings, 2023
Lignin is a major waste product of biofuel and paper industries that can be used as a modifier to improve the relevant properties of asphalt. To investigate the effect of lignin and formic acid lignin wood incorporations into asphalt and the effect on ...
Meng Cai, Chao Peng, Cheng Cheng
doaj   +1 more source

In‐Situ Growth of 2D MOFs as a Molecular Sieving Layer on SnS2 Nanoflakes for Realizing Ultraselective H2S Detection

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
The ultraselective H2S detection of the ZIF‐L/SnS2 heterostructure is demonstrated. The introduction of 2‐dimensional (2D) breathable ZIF‐L results in a substantial increase in H2S selectivity attributable to the molecular sieving effect, which impedes the permeation of gases with large kinetic diameters and high polarity.
Soo Min Lee, Yeong Jae Kim, Seon Ju Park, Woo Seok Cheon, Jaehyun Kim, Gi Baek Nam, Youngeun Kim, Ho Won Jang   +7 more
wiley   +1 more source

Effects of molecular weight on the optical and electrochemical properties of EDOT-based π-conjugated polymers

Scientific Reports, 2017
Absolute molecular weight values obtained by gel permeation chromatography with multi angle light scattering of PEDOTF8 were approximately 65% of the relative molecular weight values obtained by gel permeation chromatography using polystyrene standards ...
Shotaro Hayashi, Shin-ichi Yamamoto, Toshio Koizumi   +2 more
doaj   +1 more source

Thermally Induced Gelling Systems Based on Patchy Polymeric Micelles

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
A novel strategy to design thermally induced gelling systems with tunable material properties is reported. Polymeric mixed‐shell micelles displaying multiple thermosensitive patchy domains formed hydrogels by assembling into well‐entangled worm‐like network structures upon heating to body temperature. The patchy micelle design significantly affects the
Binru Han, Shota Fujii, André J. van der Vlies, Masoud Ghasemi, Joshua T. Del Mundo, Sarah N. Kiemle, Esther W. Gomez, Enrique D. Gomez, Ralph H. Colby, Urara Hasegawa   +9 more
wiley   +1 more source

Solution‐Processable and Ambient‐Stable Highly Conductive p‐Type Polymers Derived from Dihydropyrazine and Ethylenedioxythiophene

Advanced Functional Materials, EarlyView.
This work presents π–conjugated polymers based on dihydropyrazine (DHP) and ethylenedioxythiophene (EDOT), developed to produce highly conductive, flexible films for printed electronics. By optimizing the DHP and EDOT ratio, strong and compact π–π stacking is achieved, resulting in polymer films with conductivities up to 1700 S cm−1 under ambient ...
Sung Jae Jeon, Naixin Zhao, Yi Yuan, Yuning Li   +3 more
wiley   +1 more source