The use of ultrafiltration for treatment of spent solventcleaning rinses from nickel-plating operations: membrane material selection study

Desalination ◽  
2004 ◽  
Vol 170 (2) ◽  
pp. 169-175 ◽  
Author(s):  
Jian-Jun Qin ◽  
Fook-Sin Wong ◽  
Ye-Qiang Li ◽  
Maung Nyunt Wai ◽  
Yu-Tie Lian
Keyword(s):  
Material Selection ◽  
Nickel Plating ◽  
Membrane Material

Capacitive micromachined ultrasonic transducers: Transmission evaluation with different membrane materials and dimensions

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sudhanshu Tripathi ◽  
Rekha Agarwal ◽  
Rashmi Vashisth ◽  
Devraj Singh
Keyword(s):  
Resonant Frequency ◽  
Material Selection ◽  
Transmission Efficiency ◽  
Ultrasonic Transducers ◽  
Transduction Efficiency ◽  
Membrane Material ◽  
Structural Examination ◽  
Membrane Materials ◽  
Capacitive Micromachined Ultrasonic Transducers ◽  
Output Pressure

Abstract Capacitive micromachined ultrasonic transducers (CMUTs) are dominant in generating and receiving acoustic signals. CMUT transmission efficiency solely depends upon the membrane material utilized. This work presents the structural examination of receiving and transmitting characteristics of CMUT with divergent membrane materials, namely Silicon (Si), Silicon Nitride ( Si 3 N 4 {\mathrm{Si}_{3}}{\text{N}_{4}} ), Indium Phosphide (InP), Zinc Oxide (ZnO), and Polysilicon (Poly-Si). The analysis includes the membrane deflection, pull-in voltage, output pressure, resonant frequency and capacitance modification with variable DC voltage. It has been found that InP gives the pull-in voltage comparable to Si in the receiving mode and have more transduction efficiency in transmitting mode. Effect of dimensions of CMUT on pull-in voltage and resonant frequency are also discussed. The major contribution lies in the analytical and estimation study of CMUT for appropriate membrane material selection meant for transmission and reception in the field of pressure sensing application.

Aroma compounds recovery of tropical fruit juice by pervaporation: membrane material selection and process evaluation

2005 ◽  
Vol 66 (1) ◽  
pp. 77-87 ◽  
Author(s):  
C.C. Pereira ◽  
J.R.M. Rufino ◽  
A.C. Habert ◽  
R. Nobrega ◽  
L.M.C. Cabral ◽  
...  
Keyword(s):  
Process Evaluation ◽  
Fruit Juice ◽  
Material Selection ◽  
Aroma Compounds ◽  
Membrane Material ◽  
Tropical Fruit ◽  
Pervaporation Membrane

Bimolecular and Monomolecular Lipid Films: Selected Area Electron Diffraction

1969 ◽  
Vol 27 ◽  
pp. 338-339
Author(s):  
Robert M. Glaeser ◽  
David W. Deamer
Keyword(s):  
Electron Diffraction ◽  
Membrane Structure ◽  
Molecular Organization ◽  
Membrane Material ◽  
X Ray Diffraction ◽  
Membrane Systems ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Lipid Films ◽  
Ultimate Objective

In the investigation of the molecular organization of cell membranes it is often supposed that lipid molecules are arranged in a bimolecular film. X-ray diffraction data obtained in a direction perpendicular to the plane of suitably layered membrane systems have generally been interpreted in accord with such a model of the membrane structure. The present studies were begun in order to determine whether selected area electron diffraction would provide a tool of sufficient sensitivity to permit investigation of the degree of intermolecular order within lipid films. The ultimate objective would then be to apply the method to single fragments of cell membrane material in order to obtain data complementary to the transverse data obtainable by x-ray diffraction.

Ultrastructural and chemical evidences of heterogeneity and hormone dependence of certain glycocalyces

1978 ◽  
Vol 36 (2) ◽  
pp. 322-323
Author(s):  
B. Monis ◽  
D. Lis ◽  
I. Parlanti ◽  
A. R. Eynard ◽  
M. A. Valentich ◽  
...  
Keyword(s):  
Guinea Pig ◽  
Concanavalin A ◽  
Ruthenium Red ◽  
Transitional Epithelium ◽  
Membrane Material ◽  
Hormone Dependence ◽  
Cellulose Acetate Electrophoresis ◽  
Electrophoretic Data ◽  
Fat Globule ◽  
Collecting Tubules

We are gathering evidences which indicate ultrastructural variations and chemical heterogeneity of certain glycocalyces as well as hormone dependence of some of them. Thus, in the lumenal glycocalyx of renal collecting tubules of the guinea-pig granular and filamentous structures were seen (1, fig. 1). By isolation, chemical analysis and cellulose acetate electrophoresis in various buffers of tubular membrane material, glycopeptides and glycosaminoglycans were identified (fig. 2).Guinea-pig and rat transitional epithelium of urinary tract showed a filamentous lumenal glycocalyx demonstrable with ruthenium red (fig. 3) but which only in part stained with concanavalin A. Chemical and electrophoretic data indicated that urothelium contains glycoproteins, glycosaminoglycans and glycolipids.The glycocalyx of the fat globule membrane of milk of several species has a granular appearance as shown by cationic dyes and by concanavalin A (2, 3, fig. 4 and 5). Also, several glycoproteins were isolated and identified on polyacrilamide gel electrophoresis (fig. 6). Glycosaminoglycans and certain glycolipids such as sulfatides were chemically identified in this glycocalyx.

Nickel Plating

1892 ◽  
Vol 33 (848supp) ◽  
pp. 13545-13545
Keyword(s):  
Nickel Plating
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