نتایج جستجو برای: magnetic stirrer

تعداد نتایج: 338940  

Journal: :International Journal of Engineering Technology and Sciences 2023

Conventional plastic can lead to endless pollution as it took millions of years be disposed of, hence an alternative using biodegradable replacing regular everyday has highly participated. Polyhydroxyalkanoates (PHA) have the characteristics a however, exhibits low heat distortion temperature. The objective this research is investigate effect nanosilver additions on thermal properties PHA compo...

Journal: :Talanta 2012
Liat Birnhack Sara Sabach Ori Lahav

A new, simple and accurate method is introduced for determining H(2)CO(3)(*) alkalinity in fresh waters dominated by the carbonate weak-acid system. The method relies on a single H(3)PO(4) dosage and two pH readings (acidic pH value target: pH~4.0). The computation algorithm is based on the concept that the overall alkalinity mass of a solution does not change upon the addition of a non-proton-...

2012
Guang Liu Dong Xu Mier Jiang Weien Yuan

The aim of this study was to develop a temperature-induced polyethylene glycol (PEG) water phase/polysaccharide water-phase emulsion approach for preparing interferon alpha-2b (IFNα-2b)-loaded polysaccharide nanoparticles. IFNα-2b was first added to a mixture of an aqueous solution of PEG and polysaccharide. The mixture solution was stirred in a magnetic stirrer at a rate of 2000 rpm for 45 sec...

2015
Ronak Shetty Shweta Verma

Pharmaceutical industry often generates highly toxic wastewater and sludge depending upon the used manufacturing process and season. The high BOD to COD ratio of this particular wastewater makes biological treatment difficult. Hence chemical treatment proves to be a useful option. Fenton’s reagent is used in the treatment of pharmaceutical industry wastewater in this study. The ferrous and hydr...

Journal: :International Journal of Automotive and Mechanical Engineering 2022

This paper highlights the effect of graphite on dynamic viscoelastic properties magnetorheological grease (MRG). Two types MRG namely and graphite-MRG, GMRG with 0 wt.% 10 wt. % respectively was synthesized by using a mechanical stirrer. The rheological both sample at various magnetic field strength from to 0.603 T analyzed via rheometer under oscillatory mode strain ranging 0.001 1% fixed freq...

Journal: :SIAM J. Scientific Computing 2004
Weizhu Bao Qiang Du

In this paper, we prove the energy diminishing of a normalized gradient flow which provides a mathematical justification of the imaginary time method used in physical literatures to compute the ground state solution of Bose-Einstein condensates (BEC). We also investigate the energy diminishing property for the discretization of the normalized gradient flow. Two numerical methods are proposed fo...

2014
Zhen Ding Shifu Peng Weiwen Xia Hao Zheng Xiaodong Chen Lihong Yin

The pressing issue of earthy and musty odor compounds in natural waters, which can affect the organoleptic properties of drinking water, makes it a public health concern. A simple and sensitive method for simultaneous analysis of five odorants in environmental water was developed by headspace solid-phase microextraction (HS-SPME) coupled to chromatography-mass spectrometry (GC-MS), including ge...

2014
Hari Shankar Biswasa Kausik Gupta Jagannath Datta Uday Chand Ghosh Nihar Ranjan Ray

We have developed a biosensor based on BSA with the help of metal ions binding mechanism to detect and remove inorganic As (III), Cu (II), Pb (II) from water like fishing by hooking system. BSA was immobilized via DOPA onto the HDLC (named as BD-HDLC) surface having high loading capacity of proteins with no conformal change and having covalent interaction. These BD-HDLC samples, separately was ...

Journal: :Biotechnology progress 2011
Muhammad Gulfam Jong Min Lee Bong Geun Chung

Bottom-up approach is a potentially useful tool for hydrogel assembly of cell-laden individual building blocks. In this article, we assembled individual building blocks of photocrosslinkable microgels in a rapid and controlled manner. Individual building blocks of poly(ethylene glycol) (PEG) microgels with square and hexagonal shapes were fabricated by using a photolithography technique. Indivi...

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