نتایج جستجو برای: hydraulic microstructures

تعداد نتایج: 38768  

Journal: :Chemistry and physics of lipids 2001
A S Goldstein M H Gelb P Yager

Ceramides with chemically modified polar headgroups were prepared and examined for their ability to form complex high axial ratio microstructures (CHARMS), potential drug delivery vehicles. In general, if the modified ceramide had either a hydrogen bond donor or acceptor at C-1 and C-3, including hydrophobic or hydrophilic groups attached to C-1 microstructures formed. Tolerated groups include ...

2001
Craig Carter Rajesh Raghavan

| Methods for and computed results of including the physics and spatial attributes of microstructures are presented for a number of materials applications in devices. The research in our group includes applications of computation of macroscopic response of material microstructures, the development of methods for calculating microstructural evolution, and the morphological stability of structure...

2013
Meicheng Li Hang Yu Rui Huang Fan Bai Mwenya Trevor Dandan Song Bing Jiang Yingfeng Li

Flower-like AgCl microstructures with enhanced visible light-driven photocatalysis are synthesized by a facile one-pot hydrothermal process for the first time. The evolution process of AgCl from dendritic structures to flower-like octagonal microstructures is investigated quantitatively. Furthermore, the flower-like AgCl microstructures exhibit enhanced ability of visible light-assisted photoca...

2005
Junfeng Zhu Tian-Chyi J. Yeh

[1] Hydraulic tomography is a cost-effective technique for characterizing the heterogeneity of hydraulic parameters in the subsurface. During hydraulic tomography surveys a large number of hydraulic heads (i.e., aquifer responses) are collected from a series of pumping or injection tests in an aquifer. These responses are then used to interpret the spatial distribution of hydraulic parameters o...

Journal: :Metals 2022

Ledeburitic tool steel X210Cr12 was processed by passing through a semi-solid state with subsequent forming on hydraulic press, thus achieving fine-grained martensitic matrix, uniformly dispersed fine precipitates, and removal of sharp-edged primary chromium carbides. The hardness value over 700 HV10. decomposition austenite the promotion further carbide precipitation were carried out cryogenic...

1998

INTRODUCTION: The calculation of Manning n values has been of interest since the Manning equation was presented in the late 1800s (Henderson, 1966). While estimation of n vahm for normal channels has been fairly well standardized, the estimation of n values in areas of dense vegetation continues to be subject to large variations depending on the experience of the engineer and the perceived dens...

2015
Bin Li Guiqin Huang Jian Sun Zhongwen Xing

In the original version of this Article, the affiliations for Bin Li were incorrectly listed as ‘College of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China’, ‘National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, China’ and ‘Collaborative Innovation Center of Advanced Microstructures, Nanjing University, ...

Journal: :Tree physiology 2014
Peter Hajek Christoph Leuschner Dietrich Hertel Sylvain Delzon Bernhard Schuldt

Trees face the dilemma that achieving high plant productivity is accompanied by a risk of drought-induced hydraulic failure due to a trade-off in the trees' vascular system between hydraulic efficiency and safety. By investigating the xylem anatomy of branches and coarse roots, and measuring branch axial hydraulic conductivity and vulnerability to cavitation in 4-year-old field-grown aspen plan...

2013
Zhiheng Huang Hua Xiong Zhiyong Wu Paul Conway Frank Altmann

The dimensions of microbumps in three-dimensional integration reach microscopic scales and thus necessitate a study of the multiscale microstructures in microbumps. Here, we present simulated mesoscale and atomic-scale microstructures of microbumps using phase field and phase field crystal models. Coupled microstructure, mechanical stress, and electromigration modeling was performed to highligh...

2018
Desai Chen Mélina Skouras Bo Zhu Wojciech Matusik

Modern fabrication techniques, such as additive manufacturing, can be used to create materials with complex custom internal structures. These engineered materials exhibit a much broader range of bulk properties than their base materials and are typically referred to as metamaterials or microstructures. Although metamaterials with extraordinary properties have many applications, designing them i...

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