نتایج جستجو برای: material extraction

تعداد نتایج: 522337  

Journal: :Metals 2023

Static indentation and dynamic are reviewed, with a focus on extraction of material properties isotropic strain-hardening polycrystalline metals that may be rate- temperature-sensitive. is reviewed first, followed by indentation, since the former regarded as specialization latter inertia, rate dependence, adiabatic heating excluded. Extending concepts from literature review, treatment using dim...

Journal: :Computational Materials Science 2021

Simulation of reasonable timescales for any long physical process using molecular dynamics (MD) is a major challenge in computational physics. In this study, we have implemented an approach based on multi-fidelity physics informed neural network (MPINN) to achieve long-range MD simulation results over large sample space with significantly less cost. The fidelity our present study the integratio...

2013
George Angelov Petko Penchev Jean-Stéphane Condoret Séverine Camy

This work investigates the process of extraction of lemon balm (Melissa officinalis L.) by treatment with carbon dioxide at supercritical conditions. The process kinetics is studied at different operational conditions, and the influence of some important regime parameters (pressure, temperature particle size, solvent flow-rate) on the extraction yield is experimentally determined. Besides the i...

2016
Ming-Yu Zhang Ke Xu Jian-Hong Xu Guang-Sheng Luo

A new microfluidic approach to preparing anisotropic colloidal photonic crystal microparticles is developed and the self-assembly kinetics of colloidal nanoparticles is discussed. Based on the “coffee ring” effect in the self-assembly process of colloidal silica particle in strong solvent extraction environment, we successfully prepared anisotropic photonic crystal microparticles with different...

2012
E. Karaman

The aim of this study is to develop automatic road extraction algorithm in satellite images. As roads have different width and surface material characteristics in urban and rural areas, a modular approach for road extraction algorithm is desired. In this study, edge detection, segmentation, clustering and vegetation and land cover analyses are used. In order to combine the results of different ...

Journal: :مهندسی بیوسیستم ایران 0
مهدی فرهودی دانشجوی دکتری، پردیس کشاورزی و منابع طبیعی دانشگاه تهران زهرا امام جمعه استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمدرضا احسانی استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران عبدالرسول ارومیه ای دانشیار پژوهشکدۀ پلیمر و پتروشیمی ایران

absorption of flavor compounds from food into the package is one of the interactions which occurbetween food and packaging material. this phenomenon is of high importance, because absorptionof flavors into the packaging material could diminish the flavor intensity of the product as well asloss of mechanical/border properties of the packaging material, so the final loss of quality in thefood pro...

2011
I. Zivkovic A. Murk

New procedure for permittivity and permeability extraction of two composite (dielectric matrix + magnetic inclusions), isotropic and homogeneous absorbing material is presented. It calculates mentioned parameters by fitting measured transmission data with Debye relaxation model (for complex dielectric permittivity extraction) and with Lorenzian resonant model (for complex permeability extractio...

2017
Shangzhen Xiao Xingjun Xi Fei Tang Juan Dai Jing Liu Luying Wang

An efficient and environmental-friendly extraction method has been developed for extraction of ursolic acid (UA) from Hedyotis diffusa by using subcritical water extraction (SWE). The experiments were carried out at different particle sizes (20–100 mesh), extraction temperature (120–200 ◦C), extraction time (10–50 min), solvent/solid ratio (20–40 mL/g), and extraction pressure (0.6–3.0 MPa). Re...

2014
Tianxiu Wu Kefeng Wu Tongwu Zhou Long Bao Jiayuan Huang Wende Li

A native polysaccharides (RRP) was isolated from Radix Rehmanniae Preparata by microwave-assisted extraction (MAE). In the method, the optimized conditions were: the ratio of raw material to water was 1:50 (g/ml); microwave irradiation power was 550W; extraction temperature was 60°C; extraction time was 30min. As a result, the average yield of RRP using MAE was 9.35%, and R.S.D. was 2.15%. Furt...

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