نتایج جستجو برای: 41 پلیسولفون عامل سازگاری pdms غشاهای نانوکامپوزیت

تعداد نتایج: 164702  

Journal: :The American journal of occupational therapy : official publication of the American Occupational Therapy Association 2006
Kimberly Van Den Wymelenberg Jean Crosetto Deitz Susan Wendel Deborah Kartin

OBJECTIVE Occupational therapists, as members of early intervention (El) teams, are responsible for contributing to equitable decision making regarding service eligibility. Because the two editions of the Peabody Developmental Motor Scales (PDMS) are often used in this process, it is important to study these measures. Therefore, the purpose of this study was to examine the implications of using...

ژورنال: پژوهش نفت 2019

در این تحقیق عملکرد و خواص ضد گرفتگی و شار غشاهای نانوکامپوزیت پلی وینیلیدن فلوراید (PVDF) با غلظت‎های 15 و 18% وزنی که با نانو لوله‎های کربنی عامل‎دار شده با گروه‎های اسیدی، بازی و آمین مخلوط شده و با روش وارونگی فازی و حلال نرمال متیل پیرولیدون (NMP) در آزمایشگاه ساخته شده، مورد بررسی قرار گرفت. همچنین تست‎های شار،گرفتگی، زاویه تماس، تخلخل و نرخ پس‎دهی پروتئین انجام شده است. با استفاده از نتا...

2006
Jeonggi Seo Luke P. Lee

Polydimethylsiloxane (PDMS) is an appealing silicone elastomer as a base material for microfluidic biomedical applications. Its ability to easily ross-link as well as its favorable physical and chemical properties has enabled a large number of microand nano-cast applications. However, DMS’ hydrophobic surface can be problematic. Two methods presented here address the wettability of PDMS by accu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه لرستان - دانشکده علوم پایه 1392

غشاهای فیلم نازک مرکب (tfc) از رایج ترین غشاها می باشند که کاربردهای گسترده اای دارند. یکی از روش های معمول برای تهیه غشاهای tfc فرایند پلیمریزاسیون بین سطحی می باشد. هدف این کار ساخت غشاهای لایه نازکی است که بر خلاف غشاهایی های لایه نازک قبلی که لایه نازک آنها به صورت جداگانه بر روی ساپرت غشایی ساخته می شد،لایه نازک را به وسیله یکسری اتصالات شیمیایی با گروه های عاملی مناسب یا cross-linker به ل...

Journal: :Angewandte Chemie 2013
Chaenyung Cha Eleni Antoniadou Minkyung Lee Jae Hyun Jeong Wylie W Ahmed Taher A Saif Stephen A Boppart Hyunjoon Kong

With the emergence of microscale biotechnology, such as biomicroelectromechanical systems (“Bio-MEMS”) and microfluidic-based microchips for sensing and diagnostics, polydimethylsiloxane (PDMS)-based elastomers have become very popular materials. PDMS elastomers possess several features that are well suited for these applications: mechanical stability and elasticity, chemical inertness, optical...

Journal: :Analytical chemistry 2002
Shuwen Hu Xueqin Ren Mark Bachman Christopher E Sims G P Li Nancy Allbritton

Poly(dimethylsiloxane) (PDMS)-based microfluidic devices are increasing in popularity due to their ease of fabrication and low costs. Despite this, there is a tremendous need for strategies to rapidly and easily tailor the surface properties of these devices. We demonstrate a one-step procedure to covalently link polymers to the surface of PDMS microchannels by ultraviolet graft polymerization....

Journal: :The Journal of reproduction and development 2011
Koji Matsuura Yuka Kuroda Keisuke Yamashita Hiroaki Funahashi

Motile porcine sperms adhere to hydrophilic materials such as glass and plastics. The adsorption of sperms to a hydrophobic poly(dimethylsiloxane) (PDMS) membrane is less compared with that to glass. We investigated the linear velocity (LV) and amplitude of lateral head displacement (ALHD) of motile porcine sperm on glass and PDMS preparations using computer-assisted sperm analysis (CASA). Sign...

Journal: :Journal of the American Society of Nephrology : JASN 2001
R Fretschner W Bleicher A Heininger K Unertl

Electronic patient data management systems (PDMS) were clinically used for the first time in the 1970s. Their purpose was to automatically document vital parameters sampled by monitors and to replace handwritten medical files. Because of the continuous development of computer technology, however, demands on PDMS have increased immensely. PDMS are currently expected to assist clinicians at every...

Journal: :Lab on a chip 2012
Weiqiang Chen Raymond H W Lam Jianping Fu

A major technical hurdle in microfluidics is the difficulty in achieving high fidelity lithographic patterning on polydimethylsiloxane (PDMS). Here, we report a simple yet highly precise and repeatable PDMS surface micromachining method using direct photolithography followed by reactive ion etching (RIE). Our method to achieve surface patterning of PDMS applied an O(2) plasma treatment to PDMS ...

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