نتایج جستجو برای: flooded to 3 cm above the soil surface shallow flooded

تعداد نتایج: 17797681  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1389

in this thesis, phosphorus ylides [phbppy], [no2bppy] and [brbppy] have been synthesized through the formation of phosphonium salt and dihydrogenation, followed by the reaction of pd(oac)2 and the orthopalladated dinuclear complexes [pd(?-cl)(phbppy)]2, [pd(?-cl)(no2bppy)]2 and [pd(?-cl)(brbppy)]2 have been produced. the reaction of dinuclear complexes and bidentate ligands [l = bipy (2,2-bipyr...

2011
Jose Manuel Rodriguez-Llanes Shisir Ranjan-Dash Olivier Degomme Alok Mukhopadhyay Debarati Guha-Sapir

Objectives This study aims to improve the understanding of the relationship between exposure to floods and malnutrition in children aged 6-59 months in rural India. Research has focused exclusively on Bangladeshi children, and few controlled epidemiological studies are available. Method A community-based cross-sectional study of child nutritional status was carried out in 14 flooded and 18 non...

Journal: :Journal of microbiology, immunology, and infection = Wei mian yu gan ran za zhi 2005
Chang-Hua Chen Ru-Hua Hsiu Chun-Eng Liu Tzuu-Guang Young

In areas of flooding, soil bacteria could infect humans. We report a 78-year-old woman who developed Pseudomonas putida soft tissue infection associated with bacteremia after passing through the water of a flooded area. She recovered very well after a 14-day course of intravenous ceftazidime therapy. Physicians should be alert to soft tissue pseudomonae infection during the flooding season.

2016
Harry van Oort David J. Green Matthew Hepp John M. Cooper

Reservoirs often have highly fluctuating water levels. The perimeters of these impoundments, which alternate between being exposed or inundated by water (drawdown zone), are used by nesting birds, but at the risk of nest submergence when water levels rise. For species that nest above the ground in shrubs, foraging and predation may also be affected by flooded habitat. Our objective was to clari...

Journal: :Plant physiology 1950
J Parker

Field observations indicate that the distribution of certain forest tree species is modified by periodic flooding of the soil. There appear to be distinct differences between species with respect to the amount of flooding which they will tolerate. Overcup oak, for example, often occurs on areas which are flooded for considerable periods of time during the year, but northern red oak usually occu...

Journal: :Global change biology 2015
Bruce A Linquist Merle M Anders Maria Arlene A Adviento-Borbe Rufus L Chaney L Lanier Nalley Eliete F F da Rosa Chris van Kessel

Agriculture is faced with the challenge of providing healthy food for a growing population at minimal environmental cost. Rice (Oryza sativa), the staple crop for the largest number of people on earth, is grown under flooded soil conditions and uses more water and has higher greenhouse gas (GHG) emissions than most crops. The objective of this study was to test the hypothesis that alternate wet...

Journal: :Annals of botany 2005
G J D Kirk H J Kronzucker

BACKGROUND AND AIMS It has recently found that lowland rice grown hydroponically is exceptionally efficient in absorbing NO3-, raising the possibility that rice and other wetland plants growing in flooded soil may absorb significant amounts of NO3- formed by nitrification of NH4+ in the rhizosphere. This is important because (a) this NO3- is otherwise lost through denitrification in the soil bu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه پلیمر و پتروشیمی ایران - پژوهشکده پتروشیمی 1389

this is an original study on the effect of a polyisobutylene – polydimethylsiloxane (pibpdms) block copolymer modifier used as an interfacial active agent on the dynamics behaviour of single newtonian drops suspended in a polyisobutylene (pib) newtonian matrix. the results were divided in two sections. the first part included the experiments carried out on the non-modified and 2% block cop...

2014
Guofang Miao Asko Noormets Jean-Christophe Domec Carl C. Trettin Steve G. McNulty Ge Sun John S. King

[1] Anthropogenic and environmental pressures on wetland hydrology may trigger changes in carbon (C) cycling, potentially exposing vast amounts of soil C to rapid decomposition. We measured soil CO2 efflux (Rs) continuously from 2009 to 2010 in a lower coastal plain forested wetland in North Carolina, U.S., to characterize its main environmental drivers. To understand and quantify the spatial v...

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