نتایج جستجو برای: abstractnature has developed materials

تعداد نتایج: 3395768  

2004
Feng Wang Ke-Zhang Chen Xin-An Feng Hong Kong

A component, which has a perfect combination of different materials (including homogeneous materials and different types of heterogeneous materials) in its different portions for a specific application, is considered as the component made of a multiphase perfect material. Based on the requirements for fabricating different types of heterogeneous materials, a hybrid manufacturing process with la...

2008
Samuel Queste Emilie Courjon Gwenn Ulliac Roland Salut Valérie Petrini Jean-Yves Rauch

High speed directional etching of non conventional materials like Quartz, Lithium Niobate and Lead Titanate is still insufficiently developed for producing high aspect ratio microstructures. Compared to deep silicon etching, the plasma etching of these materials has suffered from limitations in achievable depth, aspect ratio, verticality and smoothness of surfaces. Deep etching with nearly vert...

2012
Ahmed Thabet Youssef A. Mobarak

The base polymer properties have been developed experimentally by adding small amounts of different fillers but they are expensive to the polymer material. Thus, it has been investigated that the incorporation of cost-less nanoparticles like clay and fumed silica nanoparticles into low density polyethylene LDPE and high density polyethylene HDPE which controlled the breakdown strength and volta...

In the case of hazardous materials management, selected routes for carrying hazardous materials (i.e., hazmat) have significant effects on locating hazmat distribution centers. Since, risk and cost are usually considered as two main attributes to determine the best routes, optimized locations are sequentially outlined depending on selected routes. In the present paper, t...

2011
Martin Medina

China has undergone remarkable economic growth spearheaded by industrialization. Chinese industry demands a wide variety of raw materials in increasing amounts in order to manufacture all kinds of products. Industrial demand exceeds domestic supply for several materials. Thus, China needs to import raw materials. In order to satisfy its needs, China has developed global supply chains, which lin...

H Maddah-Arefi, L Sadeghi , M Naderpour , R Shahbazi ,

Background and Aims: Certification programs of plant propagating materials rely on faster, cheaper and more importantly sensitive and reliable methods for detection of systemic pathogens as indicated in national and/or international health standards of plant propagating materials. Reverse transcription-polymerase chain reaction (RT-PCR) has been documented as an alternative assay for certific...

Journal: :international journal of transportation engineereing 2016
reza tavakkoli-moghaddam azadeh abolghasem abbas mahmoudabadi

in the case of hazardous materials management, selected routes for carrying hazardous materials (i.e.,hazmat) have significant effects on locating hazmat distribution centers. since, risk and cost are usuallyconsidered as two main attributes to determine the best routes, optimized locations are sequentially outlineddepending on selected routes. in the present paper, two different approaches of ...

Journal: :Acta biomaterialia 2012
Aidan J Cloonan Michael R O'Donnell William T Lee Michael T Walsh Eamonn De Barra Tim M McGloughlin

Numerous scaffold materials have been developed for tissue engineering and regenerative medicine applications to replace or repair damaged tissues and organs. Naturally occurring scaffold materials derived from acellular xenogeneic and autologous extracellular matrix (ECM) are currently in clinical use. These biological scaffold materials possess inherent variations in mechanical properties. Sp...

2014
P. Kathiravan V. P. Pandey

The use of qualitative judgements in multicriteria decision models is receiving increasing attention and a variety of approaches have been developed which cover a wide range of techniques. One method which has received increasing attention in the literature is the relatively recently developed analytic hierarchy process (‘AHP). This method has been widely documented in a variety of problem area...

Reducing CO2 emission and lowering the concentration of greenhouse gases in the atmosphere has quickly become one of the most urgent environmental issues. While a variety of technologies and methods have been developed, the separation of CO2 from gas streams is still a critical issue. Apart from establishing new techniques, the exploration of membrane materials with high separation performance ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید