نتایج جستجو برای: inverse co precipitation

تعداد نتایج: 476155  

2013
A. Y. Hou

The increasing availability of precipitation observations from space, e.g., from the Tropical Rain7 fall Measuring Mission (TRMM) and the forthcoming Global Precipitation Measuring (GPM) mission, has 8 fueled renewed interest in developing frameworks for downscaling and multi-sensor data fusion that can 9 handle large data sets in computationally efficient ways while optimally reproducing desir...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

nanostructured zinc oxide (zno) materials have received considerable interest from scientists due to their remarkable performance in electronics, optics and photonics. zno nanoparticles were synthesized by co-precipitation method. zno nanoparticles were synthesized using zn(no3)3 and k2co3 precursors. the structure of the obtained product was confirmed by the powder x-ray diffraction (xrd) anal...

Journal: Desert 2010
s. Modallaldoust

A watershed management program is usually based on the results of watershed modeling. Accurate modeling results are decided by the appropriate parameters and input data. Precipitation is the most important input for watershed modeling. Precipitation characteristics usually exhibit significant spatial variation, even within small watersheds. Therefore, properly describing the spatial variation o...

A. Ghasemi A. M. Davarpanah M. Ghadiri

Oxide nanoparticles of Fe-Co-Ni were prepared in six different compositions by co-precipitation method. The as-synthesized nanoparticles were characterized by X-Ray Diffraction (XRD), Field Emission Scanning Electron microscope (FESEM), Fourier Transform Infrared (FT-IR) and Vibrating Sample Magnetometer  (VSM). It was found that the nanoparticles had mean crystalline size of 30-55 nm and spher...

2010
Rico Bauer

Natural formation of the bcc modification for Co was demonstrated to occur upon precipitation of Co in supersaturated Au90Co10 alloy. The microstructural evolution was investigated by high resolution transmission electron microscopy. Co precipitation starts with the formation of very thin coherent plates along {100}Au. This initially precipitated Co was shown to be a hitherto unknown metastable...

Journal: :Acta pharmaceutica 2010
Dalwadi Sonali Soni Tejal Thakkar Vaishali Gandhi Tejal

The influence of preparation methodology of silymarin solid dispersions using a hydrophilic polymer on the dissolution performance of silymarin was investigated. Silymarin solid dispersions were prepared using HPMC E 15LV by kneading, spray drying and co-precipitation methods and characterized by FTIR, DSC, XRPD and SEM. Dissolution profiles were compared by statistical and model independent me...

2003
De-Xing Chen H. W. Hunt

Ecological responses to C O 2 enrichment and climate change are expressed at several interacting levels: photosynthesis and stomatal movement at the leaf level, energy and gas exchanges at the canopy level, photosynthate allocation and plant growth at the plant level, and water budget and nitrogen cycling at the ecosystem level. Predictions of these ecosystem responses require coupling of ecoph...

2010
C Noubactep

Contaminant co-precipitation with continuously generated and transformed iron corrosion products has received relatively little attention in comparison to other possible removal mechanisms (adsorption, oxidation, precipitation) in Fe/H2O systems at near neutral pH values. A primary reason for this is that the use of elemental iron (Fe0) in environmental remediation is based on the thermodynamic...

Journal: :IJCSA 2015
Youwei Dong Hieu Phan Ahmed Rahmani

A control model of a designed mechanical model of the hand using Screw theory is presented. Forward and inverse kinematics of a finger, which is an open-chain manipulator with four degrees of freedom (DoF), is discussed. Forward kinematics are solved using the transformations in form of exponential of twist between the adjacent link frames to obtain the configuration of the fingertip frame T re...

2012
M. Behrens D. Brennecke N. Nasrudin S. Zakaria N. Fadilah Idris S. B. Abd Hamid W. Busser M. Muhler

Co-precipitation of CuZn(Al) precursor materials is the traditional way of synthesizing Cu/ZnO/(Al2O3) catalysts for industrial methanol synthesis. This process has been investigated by titration experiments of nitrate and formate solutions. It was found that the solidification of the single components proceeds sequentially in case of nitrates: Cu is precipitated at pH 3 and Zn (as well as Al) ...

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