نتایج جستجو برای: macroporosity
تعداد نتایج: 248 فیلتر نتایج به سال:
Here we report a droplet microfluidic method to prepare a novel type of polymeric microbeads with monodispersity and macroporosity, and investigate their application as immunological biosensors for the detection of biological species. The matrix of such microbeads is based on macroporous monolithic textures configured with tailored pores ranging from hundreds of nanometers to a few microns with...
Little is known about the processes of infiltration and water movement in the upper layers of blanket peat. A tension infiltrometer was used to measure hydraulic conductivity in a blanket peat in the North Pennines, England. Measurements were taken from the surface down to 20 cm in depth for peat under four different vegetation covers. It was found that macropore flow is a significant pathway f...
We incorporated ultrafine polymer fibers into calcium phosphate cement (CPC) to improve the resorption rate of CPC with fiber degradation. Different weight percentages of electrospun poly(ε-caprolactone) fibers (0%, 3%, and 7%, named as ultrafine fiber-incorporated CPC0 [UFICPC0], UFICPC3, and UFICPC7) were included into preset CPC specimens for in vitro immersion in lipase phosphate-buffered s...
Calcium phosphate cements (CPCs) are attractive synthetic bone grafts as they possess osteoconductive and osteoinductive properties. Their biomimetic synthesis grants them an intrinsic nano- microporosity that resembles natural is paramount for biological processes such protein adhesion, which can later enhance cell adhesion. However, a main limitation of CPCs the lack macroporosity, crucial to...
Crop cultivation on sandy soils is susceptible to water stress. Therefore, we determined the physical-hydric attributes of a Latossolo Vermelho distrófico (Oxisol) in northwestern Paraná state, Brazil. Soil samples were collected at depth ranges 0 0.2 m, 0.4 and 0.6 m. We measured clay, silt, sand, fine coarse sand contents, soil particle density, bulk total porosity, microporosity, macroporosi...
We describe the production and characterization of a form of nanostructured carbon consisting of fully connected, three-dimensional ~3D! sp networks. This form of carbon is characterized by interconnected thin layers forming a spongy structure with mesoand macroporosity. It is produced by a pulsed microplasma cluster source in the presence of a very low concentration of metallorganic catalyst. ...
Seeking to provide essential information about sustainable tillage systems, this work aimed assess the effects of liming and soil cultivation systems on hydrophysical attributes a long-term cultivated sugarcane field in tropical region southeast Brazil. Infiltration tests sampling down 0.10 m were performed order determine saturated hydraulic conductivity, bulk density, total porosity, macropor...
Heavy vehicle traffic, especially large military combat vehicles, causes soil compaction, which reduces their physical quality and increases susceptibility to erosion. A contingent of the Brazilian Army conducts training at Santa Maria Instruction Field (CISM), has been caused degradation ecosystem. The aim this study was evaluate effect Leopard 1A5BR traffic on properties in an Abruptic Alisol...
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