نتایج جستجو برای: کامپوزیت nano

تعداد نتایج: 55645  

ژورنال: :مهندسی مکانیک مدرس 2016
ابوالفضل درویزه رضا انصاری خلخالی محمدجواد محمودی محمدکاظم حسن زاده اقدم

در این پژوهش، از یک مدل میکرومکانیکی تحلیلی بر مبنای روش سلول واحد جهت مطالعه اثرات فاز میانی بر پاسخ ویسکوالاستیک غیرخطی کامپوزیت های زمینه پلیمری چندفازی استفاده می شود. المان حجمی نماینده کامپوزیت از سه فاز شامل الیاف هم راستا، زمینه پلیمری و فاز میانی بین الیاف و زمینه تشکیل می شود. فرض اتصال کامل بین اجزای سازنده کامپوزیت منظور می شود. از معادله ساختاری ویسکوالاستیک شیپری برای مدل سازی رفت...

2009
Kai Xu Junran Huang Zunzhong Ye Yibin Ying Yanbin Li

As knowledge of the structure and function of nucleic acid molecules has increased, sequence-specific DNA detection has gained increased importance. DNA biosensors based on nucleic acid hybridization have been actively developed because of their specificity, speed, portability, and low cost. Recently, there has been considerable interest in using nano-materials for DNA biosensors. Because of th...

2016
Weicheng Zhang Shaopan Bao Tao Fang

Nanoparticles (NPs) with unique physicochemical properties induce nano-specific (excess) toxicity in organisms compared with their bulk counterparts. Evaluation and consideration of nano-specific toxicity are meaningful for the safe design and environmental risk assessment of NPs. However, ZnO NPs have been reported to lack excess toxicity for diverse organisms. In the present study, the nano-s...

2015
Hae Woong Jeong Sung-Chul Jin

OBJECTIVE Based on the use of Nano™ coils, we retrospectively compared the proportion of the coils (≤ 1.5 mm) and packing density in two patient groups with small cerebral aneurysms (< 4 mm diameter) who were treated with or without Nano™ coils. MATERIALS AND METHODS Between January 2012 and November 2013, in 548 cerebral aneurysms treated by endovascular coiling, 143 patients with 148 small ...

Journal: :Microelectronics Reliability 2009
J. Shen Y. C. Chan

Recently, nano-composite solders have been developed in the electronic packaging materials industry to improve the creep and thermo-mechanical fatigue resistance of solder joints to be used in service at high temperatures and under thermo-mechanical fatigue conditions. This paper reviews the driving force for the development of nano-composite solders in the electronic packaging industry and the...

Journal: :Aquatic toxicology 2008
Hongcheng Li Jinsong Zhang Thanh Wang Wenru Luo Qunfang Zhou Guibin Jiang

Recent studies have shown that elemental selenium particles at nano-size (Nano-Se) exhibited comparable bioavailability and less toxicity in mice and rats when compared to sodium selenite, selenomethinine and methylselenocysteine. However, little is known about the toxicity profile of Nano-Se in aquatic animals. In the present study, toxicities of Nano-Se and selenite in selenium-sufficient Med...

2011
Lili Wang Ad Notten

Along with the rapid growth of nanoscience research and the wide application of nanotechnology into various industrial fields, the innovation patterns and co-evolutionary natures of multiple nano industrial sectors have drawn much attention from scholars. Based on a continuously updated nano-publication database, this paper explores the learning and integrative dynamics in nano industrial secto...

2015
Kuo-Hsun Hua Hsiang-Chuan Wang Ren-Shih Chung Ju-Chun Hsu

Nanoparticles and nanotechnology have been applied in agriculture, including for plant nutrition improvement, and pest control. Little research has been conducted on nano-calcium carbonate in plant protection and nutrition. In this study, we compared the effects of nano-calcium carbonate and colloidal calcium carbonate and found that nano-calcium carbonate treatments were better at increasing c...

2006
A.I.Y. Tok F.Y.C. Boey S. W. Du B. K. Wong

This paper studies the feasibility of using flame spray to produce ZrO2 nano-particles using a liquid precursor. The effects of varying precursor concentrations and ratio of diluting medium on the phase composition, size and morphology of ZrO2 nano-particles are discussed. The morphology and size of the ZrO2 nano-particles was very much dependent on the precursor concentration. The solvent rati...

2017
Juan Du Xuelai Liu

The diabetic wound healing is a common problem faced by both physicians and surgeons. The applications of nano biomaterials opened a new way to heal diabetic wounds. There were four parts in this review. First, we introduced the concept of the nano biomaterials. Second, we summarized systematically the mechanism of the nano biomaterials used for promoting wound healing. Thirdly, the application...

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