نتایج جستجو برای: Chloride Ion

تعداد نتایج: 282205  

ژورنال: مهندسی دریا 2012
آذریون, علیرضا, تدین, محسن, قهرمانی, غلامرضا,

Diffusion coefficient is one of the parameters which can describe the rate of chloride ion diffusion in concrete. This can be obtained by the chloride ion profile. By determining this factor,one can predict when the chloride ion concentration on the reinforcement surface reaches a critical value,and the cover tickness which is needed for preventing corrosion. Time and distance dependency of ...

Journal: :international journal of iron & steel society of iran 2015
a. a. m. hojati fahim e. nikomanzari

the effect of chloride ions concentration on the electrochemical behavior of aisi 410 stainless steel in thesimulated concrete pore (0.1 m naoh + 0.1 m koh) solution was investigated by various electrochemicalmethods such as potentiodynamic polarization, mott–schottky analysis and electrochemical impedancespectroscopy (eis). potentiodynamic polarization curves revealed that increasing chloride ...

Journal: :international journal of civil engineering 0
a. tarighat lavizan

chloride ion ingress in concrete is the main reason of concrete corrosion. in real world both uncertainty and stochasticity are main attributes of almost all measurements including testing and modeling of chloride content profile in concrete. regarding these facts new models should be able to represent at least some of the uncertainties in the predictions. in this paper after inspiration from c...

Journal: :The Journal of biological chemistry 2016
Toshiaki Hosaka Susumu Yoshizawa Yu Nakajima Noboru Ohsawa Masakatsu Hato Edward F DeLong Kazuhiro Kogure Shigeyuki Yokoyama Tomomi Kimura-Someya Wataru Iwasaki Mikako Shirouzu

The light-driven inward chloride ion-pumping rhodopsin Nonlabens marinus rhodopsin-3 (NM-R3), from a marine flavobacterium, belongs to a phylogenetic lineage distinct from the halorhodopsins known as archaeal inward chloride ion-pumping rhodopsins. NM-R3 and halorhodopsin have distinct motif sequences that are important for chloride ion binding and transport. In this study, we present the cryst...

Journal: :journal of food quality and hazards control 0
m. hashemi department of nutrition, faculty of medicine, mashhad university of medical sciences, mashhad, iran a. afshari department of nutrition, faculty of medicine, mashhad university of medical sciences, mashhad, iran m. aminzare department of food safety and hygiene, school of public health, zanjan university of medical sciences, zanjan, iran m. raeisi [email protected] t. sahranavard faculty of medicine, mashhad university of medical sciences, mashhad, iran

background: salt content and ph degree are the quality indicators of bread which their unauthorized levels may have harmful effects on body health. accordingly, this survey was carried out to evaluate ph and salt contents in bread samples produced in mashhad, iran. methods: totally 708 bread samples (340 loaves of lavash, 183 loaves of taftun, 139 loaves of barbari and 46 loaves of sangak bread...

Journal: :Physical chemistry chemical physics : PCCP 2013
Ling Ge Leonardo Bernasconi Patricia Hunt

Aqueous chloride solutions are ubiquitous and diverse; systems include sea water, atmospheric droplets, geological processes and biological organisms. However, despite considerable effort, a complete microscopic model of the hydration shell, and local electronic structure of the aqueous chloride ion and its dynamics has not been established. In this work we employ ab initio molecular dynamics t...

Journal: :journal of physical & theoretical chemistry 2004
hossein aghaei masood giahi majjid arvand mehran aghaei

tin(ii)-ion-selective electrode consisting of dibenzo-18-crown-6 (db18c6) as an ionophore inpvc matrix was developed. the influences of membrane composition, selectivity, response time,reversibility and temperature on the electrode performance were investigated. the electrodeshowed a near nernstian response for sn2+ ions over a concentration range from 1.0× 10-6 – 1.0× 10-2 m with a slope of 27...

Journal: :علمی شیلات ایران 0
بابک عطایی مهر b ataimehr باقر مجازی امیری b mojazi amiri علیرضا میرواقفی a mirvaghefi شعبانعلی نظامی s nezami غلامحسین ریاضی g riazi

changes of ions (na+, cr, k+), osmolarity and water concentration of body tissue, size and number of gill chloride cells as well as mortality percentage of the juveniles caspian roaches in weight groups of0.2, 0.5 & 1g water satiny stress were studied. the salinities tested  were 0 (fesh water), 7, 12.5 & 16g/lit and the assessments were completed 0, 12, 24, 48 & 72 hours after exposure. result...

Journal: :international journal of civil engineering 0
h.r. ashrafi a.a. ramezanianpour

deterioration of concrete structures in the gulf region is a serious problem. penetration of chloride ion into concrete is responsible for such early deterioration. determination of chloride diffusion coefficient is an effective way to predict the service life of concrete structures. in order to investigate the performance of concrete mixtures in such environments, ordinary and silica fume conc...

Journal: :Bioresource technology 2013
Shoushuai Feng Hailin Yang Yu Xin Kai Gao Jiwei Yang Ting Liu Ling Zhang Wu Wang

An integrated bioleaching system (stable pH-silver ion-chloride ion) was firstly proposed to for improving the efficiency of chalcopyrite bioleaching by mixed strains of Acidithiobacillus. The individual effects of stable pH, silver ion, and chloride ion on bioleaching were respectively studied. The highest copper ion concentrations in each system were 45.8, 50.2, and 45.2 mg/l, respectively, w...

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