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تعداد نتایج: 5998  

Journal: :environmental health engineering and management 0
zabihollah yousefi [email protected] ramazan motallebi department of water engineering, islamic azad university, bandar abbas branch, hormozgan, iran afshin takdastan environmental technologies research center, ahvaz jundishapur university of medical sciences, ahvaz, iran

background: reverse osmosis (ro) is an increasingly common method of desalination. a full scale water desalination system by membrane technology (ro) evaluated in a southern city (jask) in iran. methods: first, data collection on water supply and network were performed. analysis on most of the water quality parameters (turbidity, ph, ec, cl-, na+, alkalinity, ca, na, k, no3, no2, fe, mg, mn, nh...

Journal: :Remote Sensing 2017
Yidan Si Shenshen Li Liangfu Chen Chao Yu Wende Zhu

Epidemiologic and health impact studies have examined the chemical composition of ambient PM2.5 in China but have been constrained by the paucity of long-term ground measurements. Using the GEOS-Chem chemical transport model and satellite-derived PM2.5 data, sulfate and ammonium levels were estimated over China from 2004 to 2014. A comparison of the satellite-estimated dataset with model simula...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده فنی 1391

در این مطالعه، کارایی سیستم تالاب مصنوعی جریان زیر سطحی افقی (hssfcw) در تصفیه فاضلاب در اقلیم سرد و خشک به صورت موردی در شهر بیرجند بررسی شد. شش سلول hssfwc به صورت موازی به ابعادm 45/0×75/0×2/2 ساخته شد. بستر سلول های h1، h2 و h3 با استفاده از شن ریزدانه و بستر سلول های h4، h5 و h6 با شن درشت دانه پر شد. دو سلول h1 و h6 بدون گیاه در نظر گرفته و در سلول های دیگر از نی بومی از نوع phragmites au...

Journal: :International journal of environmental science and development 2023

The most potential pollutants of the river Sitnica with phenols, heavy metals, and other physicochemical indicators are Kishnica Mine, Ferronikel, surface coal mines, Kosovo Energy Corporation, landfill industrial waste in Mitrovica, landfills urban discharges, etc. purpose this work is to investigate degree pollution determine ecological status River. Although focus our research phenol waters ...

Journal: :Atmosphere 2022

In order to identify the pollution characteristics and sources of PM2.5 in Urumqi, fine particulate matter samples were collected from September 2017 August 2018, water-soluble ions (WSIs), organic carbon (OC), elemental (EC), polycyclic aromatic hydrocarbons (PAHs), metal elements analyzed. The results indicate that annual mass concentration Urumqi was 158.85 ± 15.11 ?g/m3, with highest season...

Afshin Takdastan, Ramazan Motallebi, Zabihollah Yousefi,

Background: Reverse Osmosis (RO) is an increasingly common method of desalination. A full scale water desalination system by membrane technology (RO) evaluated in a southern city (Jask) in Iran. Methods: First, data collection on water supply and network were performed. Analysis on most of the water quality parameters (Turbidity, pH, EC, Cl-, Na+, Alkalinity, Ca, Na, K, No3, No2, Fe, Mg, Mn, NH...

Journal: :Atmospheric Chemistry and Physics 2021

Abstract. To study sea-derived gaseous amines, ammonia, and primary particulate aminium ions in the marine atmosphere of China's marginal seas, an onboard URG-9000D Ambient Ion Monitor-Ion Chromatograph (AIM-IC, Thermo Fisher) was set up on front deck R/V Dongfanghong-3 to semi-continuously measure spatiotemporal variations concentrations atmospheric trimethylamine (TMAgas), dimethylamine (DMAg...

Journal: :CoRR 2002
W. Chen Weixing He Tingxiu Zhong

WEN CHEN, WEIXING HE, AND TINGXIU ZHONG Affiliation: Department of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200030, P. R. China Affiliation: Department of Electrical Engineering, Jiangsu University of Science & Technology, Zhenjiang, Jiangsu 212013, P. R. China. Corresponding author: Wen Chen (PhD), Mail address: P. O. Box 9601BB, Shanghai Jiao Tong University, Shanghai 2...

2011
Hua Xiong Jie Hong Wan Du Yan-wei Lin Lin-lin Ren Ying-chao Wang Wen-yu Su Ji-lin Wang Yun Cui Zhen-hua Wang Jing-Yuan Fang

# The two authors contributed equally to this work *Address correspondence and reprint requests to: Jing-Yuan Fang, MD, PhD or Jie Hong, PhD, GI Division, Shanghai Jiao-Tong University School of Medicine Renji Hospital, Shanghai Institution of Digestive Disease; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health (Shanghai Jiao-Tong University); State Key Laboratory of Oncogene ...

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