نتایج جستجو برای: porous solid

تعداد نتایج: 235451  

Journal: :Molecules 2010
Sireesha Chemburu Kyle Fenton Gabriel P Lopez Reema Zeineldin

Lipid vesicles spontaneously fuse and assemble into a lipid bilayer on planar or spherical silica surfaces and other substrates. The supported lipid bilayers (SLBs) maintain characteristics of biological membranes, and are thus considered to be biomembrane mimetic systems that are stable because of the underlying substrate. Examples of their shared characteristics with biomembranes include late...

Journal: Nanomedicine Journal 2020
Amin Kolooshani, Amirsalar Khandan, Bahareh Kamyab Moghadas Marjan Monshi, Saeed Saber-Samandari Saeid Esmaeili

Objective(s): Tissue engineering aims to achieve a tissue, which has highly interconnected porous microstructure concurrent with appropriate mechanical and biological properties. Materials and Methods: Therefore, the microstructure scaffolds are of great importance in this field. In the present study, an electroconductive poly-lactic acid (EC-PLA) filament used to fabricate a porous bone ...

Journal: :The Science of the total environment 2015
Samuel K Kumahor Pavel Hron George Metreveli Gabriele E Schaumann Hans-Jörg Vogel

Chemical factors and physical constraints lead to coupled effects during particle transport in unsaturated porous media. Studies on unsaturated transport as typical for soils are currently scarce. In unsaturated porous media, particle mobility is determined by the existence of an air-water interface in addition to a solid-water interface. To this end, we measured breakthrough curves and retenti...

2009
G. Ahuja K. Pathak

Considerable research efforts have been directed in recent years towards the development of porous carriers as controlled drug delivery matrices because of possessing several features such as stable uniform porous structure, high surface area, tunable pore size and well-defined surface properties. Owing to wide range of useful properties porous carriers have been used in pharmaceuticals for man...

Journal: :Chemical science 2017
Rebecca L Greenaway Daniel Holden Edward G B Eden Andrew Stephenson Chin W Yong Michael J Bennison Tom Hasell Michael E Briggs Stuart L James Andrew I Cooper

Porous liquids are a new class of material that could have applications in areas such as gas separation and homogeneous catalysis. Here we use a combination of measurement techniques, molecular simulations, and control experiments to advance the quantitative understanding of these liquids. In particular, we show that the cage cavities remain unoccupied in the absence of a suitable guest, and th...

Journal: :Tissue engineering. Part A 2009
Yuncang Li Jianyu Xiong Cynthia S Wong Peter D Hodgson Cui'e Wen

Porous titanium (Ti) and titanium alloys are promising scaffold biomaterials for bone tissue engineering, because they have the potential to provide new bone tissue ingrowth abilities and low elastic modulus to match that of natural bone. In the present study, a new highly porous Ti6Ta4Sn alloy scaffold with the addition of biocompatible alloying elements (tantalum (Ta) and tin (Sn)) was prepar...

Journal: :International Journal of Engineering Science 2023

Natural and engineered media usually involve combinations of solid, fluid porous layers, accurate stable modelling wave propagation in such complex multilayered is fundamental to evaluating their properties with wave-based methods. Here we present a general stiffness matrix method for waves arbitrary multilayers. The first formulates matrices individual layers based on the governing equations f...

Gitika Arorac Harish Durejab Manju Nagpal, Pankaj Rakha Surender Goyal Veerendra Rajpurohit

      In order to enhance in vitro dissolution and content uniformity of poorly soluble drug glimepiride by preparing solid dispersions using modified solvent fusion method, solid dispersions of drug were prepared by modified fusion solvent method using PEG 6000 and PVP K25 (as carrier). Eight batches (F1-F8) were prepared by Factorial design (23) by taking three ...

2001
Jon M. Wraith Dani Or Scott B. Jones

The dielectric properties of molecular layers of water bound to solid surfaces or to macromolecules are substantially different than those of free water. Consequently, determination of moisture content from dielectric properties of porous mixtures, such as soils and rocks having moderate to substantial surface area and cereal grains, is affected by the amount and energy state of bound water. We...

2015
CARL SANDSTRÖM

Porous materials are present in many natural as well as engineered structures. Engineering examples include filters, sanitary products and foams while examples of natural occurrences are oil reservoirs and biological tissue. These materials possess a strongly heterogeneous microstructure consisting of a contiguous solid skeleton, more or less saturated with fluid. The scale of the substructural...

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