نتایج جستجو برای: local rivers chemical characteristics and discharges

تعداد نتایج: 17013414  

2008
Carlyne Z. Yu Edsel E. Sajor

Urban rivers are vulnerable to different processes and activities that pollute and degrade the water ecosystem. Restoring their health poses a huge challenge to governments and other actors. This paper examines a ‘success’ case of a LGU-initiated river rehabilitation program in the Philippines in two sequential phases; the first phase which targeted physical restoration of the riverbanks and so...

2012
Kevin L. Stuart Steven H. Emerman

The objective of this study was to investigate the possibility of a generic rating curve with a small number of adjustable parameters for the restricted class of bedrock step-pool rivers. The motivation for this study arose from Utah Valley University’s long-term program of groundwater development in the Trans-Mexican Volcanic Belt, which requires hydrographs for bedrock step-pool rivers near r...

2015
Yindong Tong Yue Zhao Gengchong Zhen Jie Chi Xianhua Liu Yiren Lu Xuejun Wang Ruihua Yao Junyue Chen Wei Zhang

Based on monthly monitoring data of unfiltered water, the nutrient discharges of the eight main rivers flowing into the coastal waters of China were calculated from 2006 to 2012. In 2012, the total load of NH3-N (calculated in nitrogen), total nitrogen (TN, calculated in nitrogen) and total phosphorus (TP, calculated in phosphorus) was 5.1 × 10(5), 3.1 × 10(6) and 2.8 × 10(5) tons, respectively...

2008

A large shift in the coastal marine vegetation, from sugar kelp forest to silty turf algae communities, took place at the Norwegian Skagerrak Coast between 1996 and 2002, after decades of eutrophication and recent climatic events causing elevated sea temperature. The eutrophication of these coastal waters is largely influenced by long-range transported nutrients from the Southern North Sea. The...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی 1391

in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...

2011
Se-Rin Park Hyun-Joo Lee Sang-Woo Lee Soon-Jin Hwang Myeong-Seop Byeon Gea-Jae Joo Kwang-Seuk Jeong Dong-Soo Kong Myoung-Chul Kim

Despite numerous previous studies, relationships between watershed land use and adjacent streams and rivers at various scales in Korea remain unclear. This study investigated the relationships between land uses and the physical, chemical, and biological characteristics of 720 sites of streams and rivers across the country. The land uses at two spatial scales, including a 1-km buffer and the bas...

Journal: :علوم باغبانی 0
مهدی زارعی مجید عزیزی

abstract pomegranate (punica granatum l.) is an important iranian-native fruit, and many of its varieties are cultivated. this research was conducted to evaluate some of the major physical and chemical properties of six pomegranate cultivars at ripening stage in a completely randomized design with 4 replications. the investigated traits were fruit fresh weight, fruit volume, peel thickness, pee...

پایان نامه :0 1371

in order to examine the ecological conditions and characteristics of fraxinus excelsior l. in the northern forests of iran 6 main areas as well as some miscellaneous ones , have been selected in the region respectively in : lomir2, shafaroud , park - e-noor , ahlam , alandan and noor.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم تربیتی و روانشناسی 1391

abstract prediction of death anxiety on the basis of demographic characteristics and sp پیش بینی اضطراب مرگ براساس ویژگی های دموگرافیک و مولفه های معنویت در سالمندان به کوشش الهام حسن زهی معنویت از جمله مفاهیمی است که سالیان متمادی در حوزه روان شناسی جایگاه خود را یافته است پیشینه پژوهش نشان داده است که با متغیرهای فراوانی در روانشناسی در ارتباط بوده است. هدف از پژوهش حاضر این اس...

Background: Iran is located in the global arid zone. With an average rainfall of less than 250 mm. 25 percent is Iran of located in hyper-dry area and 40 percent in the arid area. In 2007, the World Bank report declared the annual reduction of freshwater resources in Iran 6 times more than global standards and indicators. Since at present, in Iran most available fresh water enters the water eco...

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