نتایج جستجو برای: gravelly drainage layer

تعداد نتایج: 322829  

Journal: :Ecology 2007
Woo-Jung Choi Scott X Chang Jagtar S Bhatti

The lowering of the water table resulting from peatland drainage may dramatically alter C and N cycling in peatland ecosystems, which contain one-third of the total terrestrial C. In this study, tree annual ring width and C (delta(13)C) and N (delta(15)N) isotope ratios in soil and plant tissues (tree foliage, growth rings, and understory foliage) in a black spruce-tamarack (Picea mariana-Larix...

2011
Jong-Hee Yoon Ki-Hun Kim Jung-Man Namgoong Sam-Youl Yoon Sung-Won Jung Yo-Han Park Hyung-Woo Park Cheon-Soo Park Hyo-Jun Lee Do Hyun Park Sang-Soo Lee Dong-Wan Seo Sung-Koo Lee Myung-Hwan Kim Shin Hwang Chul-Soo Ahn Deok-Bog Moon Tae-Yong Ha Gi-Won Song Dong-Hwan Jung Gil-Chun Park Sung-Gyu Lee

BACKGROUNDS/AIMS The rates of surgery-related complications during and after pancreaticoduodenectomy (PD) remain very high, reaching up to 41%. They were primarily caused by leakage of pancreatic juice. We evaluated the effectiveness of external drainage of the bile duct using a pigtail drain to prevent pancreatic leakage in patients undergoing PD. METHODS We evaluated 79 patients who underwe...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1388

asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...

Journal: :آب و خاک 0

introduction: better use of water and soil resources in paddy fields, increase in rice production and farmer's income, installation of subsurface drainage system is necessary. the main goalof these systems, are aeration conditions improvement prevention of water logging, yield increase, land use increase and multiuse of the land. in different countries, installation of subsurface drainage cause...

Journal: :Water 2021

Enhanced water use efficiency (WUE) is the key to sustainable agriculture in arid regions. The installation of capillary barriers (CB) has been suggested as one potential solutions. CB effects are observed between two soil layers with distinctly different hydraulic properties. A helps retain upper, relatively fine-textured layer, suppressing losses by deep drainage. However, retaining a shallow...

1997
M. G. Worster J. S. Wettlaufer

We present new experimental results relating to the growth and evolution of sea ice. These show, in particular, that brine initially remains trapped in the interstices of the sea ice, only draining into the underlying ocean once the depth of the sea-ice layer exceeds a critical value. A general theory for convection within mushy layers is applied to develop a hypothesis for when brine drainage ...

2017
Taiga Inoue Kazuhisa Goto Yuichi Nishimura Masashi Watanabe Yasutaka Iijima Daisuke Sugawara

Throughout history, large tsunamis have frequently affected the Sanriku area of the Pacific coast of the Tohoku region, Japan, which faces the Japan Trench. Although a few studies have examined paleo-tsunami deposits along the Sanriku coast, additional studies of paleo-earthquakes and tsunamis are needed to improve our knowledge of the timing, recurrence interval, and size of historical and pre...

2011
Anna Pyszora Małgorzata Krajnik

Lymphoedema is a common and distressing symptom in palliative care. The classic physiotherapy treatment for lymphoedema includes a combination of manual lymph drainage (MLD), compression therapy (multi-layer bandaging, compression garments), decongestive exercises and skin care. Lymphoedema therapy in advanced cancer patients should be adapted to their general condition and the intensity of oth...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید