نتایج جستجو برای: de gels

تعداد نتایج: 1553782  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی 1387

چکیده ندارد.

Journal: :Current Opinion in Colloid & Interface Science 1996

2009
Yi-Hsin Lin Hung-Chun Lin Jhih-Ming Yang

We demonstrate a polarizer-free electro-optical switch using dye-doped liquid crystal (LC) gels. The mechanism of dye-doped LC gels mainly involves the combination of polymer scattering and dye absorption. However, the domain size of polymer networks, dye concentration, LC concentration, and fabrication process can all affect the phase separation process and thus result in dye-doped LC gels wit...

1998
Deron K. Jackson Steven B. Leeb Ahmed H. Mitwalli Paolo Narvaez Dahlene Fusco

Properly fabricated polymer gels exhibit an abrupt change in volume in response to a small change in an environmental parameter, such as temperature. We have developed gels that change in volume in response to an applied alternating magnetic field, and we are working to apply these gels as actuators. This paper describes power electronic circuits suitable for electromagnetic activation of these...

Behrooz Amir Feiz, Ebrahim Khoshnevis, Khalil Farivar, Manoochehr Behroozi, Mohammad Hossein Marandian,

Les auteurs font une revue de la litterature a propos de deux cas de l'agenesie de l'artere renale, anomalie rare, dont les circonstances de decouverte varient selon les cas: infections recidiventes des voies urinaires, anomalie du Perinee, hypertension arterielle.  La premiere observation concerne une fillette a.gee de 7 ans, hospitalisee pour une insuffi­sance cardiaque severe avec hypertens...

Ali Nafisi, Keykhosro Vakili, Parviz Samadian,

Tes kystes du grand Epiploon sont assez rares, ct es lymphangiomies kystiques de grand epiploon asscz exceptionnelles.Le coutenu de ces kystes lymphatiques peuvent etres soit sereux soit chyleux.  Au point de vue pathogenic, Ladd et Gross pell­sent que ces kystes proviennent de l'isolemcnt ct du tlevelopement d'un ou plusieurs kystes lymphatiquc, primitifs.  Dans !'observation que nous prcsen...

Journal: :APL Materials 2022

Fluorescent supramolecular gel is a large group in luminescent gels. In the scope of practical applications, excellent stability and robust luminescence are complementary indispensable for high-performance fluorescent Therefore, this Perspective, proceedings precursor explorations stabilizing boosting behavior gels will be briefly summarized. The challenges possible development frontiers also p...

2017
Meng Yang Yongwei Gu Dishun Yang Xiaomeng Tang Jiyong Liu

BACKGROUND This work aimed to provide useful information on the use of nanoemulsions for the percutaneous administration of triptolide. Lipid nanosystems have great potential for transdermal drug delivery. Nanoemulsions and nanoemulsion gels were prepared to enhance percutaneous permeation. Microstructure and in vitro/in vivo percutaneous delivery characteristics of triptolide (TPL)-nanoemulsio...

Journal: :Food Hydrocolloids 2021

In this study, a novel composite gel was fabricated from Konjac glucomannan (KGM) combined with zein, while its properties and structure were characterized. The effect of the KGM/zein ratios freeze-thaw treatment on gels investigated. storage modulus (G?) KGM increased even when zein content below 20%, partial phase separation occurred exceeded 50%. initial decomposition temperature improved by...

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