نتایج جستجو برای: dual stage nanofiltration

تعداد نتایج: 507808  

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
mostafa shahidi noghabi s.mohammad ali razavi s.mahmud mousavi mohammad elahi

removing of ions from different water and waste water is one of the most important of nanofiltration potential for different aims, such as softening of potable water, remove of heavy metal ions and purification of waste water to reuse. in this study nanofiltration was used to remove of the most important ions (na+, k+, ca2+, mg2+, so42-, cl-) in sugar beet press water to reuse of this stream. e...

2009
Bart Raeymaekers Matthew R. Graham Raymond A. de Callafon Frank E. Talke

As tape recording density increases, high-frequency track following capability of the tape head actuator becomes more important. This paper details the mechanical design and experimental analysis of a dual state actuator tape head. The dual stage actuator design combines a traditional voice coil motor for low frequency track following with a piezoelectric actuator for high-frequency track follo...

Journal: :international journal of nanoscience and nanotechnology 2013
m. m. zerafat m. shariaty-niassar s. j. hashemi s. sabbaghi a. ghaee

nanofiltration-based separation processes have found diverse applications in industrial and environmentalproblems recently, due to several advantages such as lower energy requirement and elevated flux ratescompared with their reverse osmosis (ro) counterparts. several attempts have been made for modellingnf-based separation processes ranging from rigorous space-charge approaches to simpler irre...

Journal: :Trends in biotechnology 1999
K B Jirage C R Martin

Recent advances in membrane-based separations include chiral separations, nanofiltration, ion-permselectivity, gas separation and pervaporation. Novel chiral separations using enzymes and chiral surfactants as carrier have been achieved using facilitated-transport membranes. Graft-copolymeric membranes have been constructed that possess pH-controlled ion selectivity, and membranes have been mad...

2015
Shan ZHANG Lei WANG Shan Zhang Lei Wang

Long stroke and nanometer precision positioning technology based on dual stage has important applications in the fields of ultra precision machinery and equipment, which consists of a coarse stage for long stroke and a fine one for high precision. In order to further suppress the positioning noise of dual stage, we design an abdominal and passive damper for the fine stage. However, it becomes a...

2001
SangJoo Kwon Wan Kyun Chung Youngil Youm

A dual-stage, fast and fine robotic manipulator is presented. By adopting merits of both coarse and fine actuator, a desirable system having the capacity of large workspace with high resolution of motion is enabled. We constructed an ultra precision XY manipulator with dual-stage structure where the PZT driven fine stage is mounted on the motor driven XY positioner and applied it to fine tracki...

Journal: :international journal of environmental research 0

in this study, nf membrane was used for surface water treatment. the rejection of organic material, measured as total organic carbon (toc), by nanofiltration was examined. the effects of application of pre-ozonation and pre-chlorination on toc removal are discussed and their performances are compared with the performances of nanofiltraion system without pretreatment process. in nf, natural orga...

Journal: :journal of membrane science and research 0
yaghoub mansourpanah lorestan university, iran

0

Background: This study aimed to investigate the effect of sexual relationship enrichment program training on the sexual satisfaction of dual-career couples. Material and Methods: This research was a single-case experiment. The statistical population was all couples referred to the counseling center in Ardabil in 2019. In this study, three couples were purposefully selected as a sample. Larsonc...

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