نتایج جستجو برای: flooding stress

تعداد نتایج: 451620  

Journal: :جنگل و فرآورده های چوب 0
احسان قنبری کارشناس ارشد جنگل داری، دانشگاه تربیت مدرس، نور، ایران مسعود طبری کوچکسرایی دانشیار گروه جنگل داری، دانشگاه تربیت مدرس، نور، ایران

the effects of 450-days of flooding on morphological and gas exchanges responses were investigated under controlled conditions for populus deltoides (colon 77.51) and taxodium distichum seedlings. seedlings were subjected to three outdoor treatments: not flooded (control), flooded to 3 cm above the soil surface (shallow flooded), and flooded to 15 cm above the soil surface (deep flooded). flood...

Journal: :journal of petroleum science and technology 2014
sina shaddel mahmoud hemmati ehsan zamanian navid nejati moharrami

various researches on laboratory and field scale illustrate that manipulating the ionic composition and the ion concentration of injected water can affect the efficiency of water flooding and the interaction of injected water with rock and other fluids present in porous media. the objectives of this paper are to investigate parameters that affect low salinity water flooding; mainly the effect o...

Journal: :Environmental pollution 2007
Andrea J Farwell Susanne Vesely Vincent Nero Hilda Rodriguez Kimberley McCormack Saleh Shah D George Dixon Bernard R Glick

The growth of transgenic canola (Brassica napus) expressing a gene for the enzyme 1-aminocyclopropane-1-carboxylate (ACC) deaminase was compared to non-transformed canola exposed to flooding and elevated soil Ni concentration, in situ. In addition, the ability of the plant growth-promoting bacterium Pseudomonas putida UW4, which also expresses ACC deaminase, to facilitate the growth of non-tran...

Journal: :iranian journal of oil and gas science and technology 0
yaser ahmadi m.s. student, department of petroleum engineering, tehran petroleum research center, petroleum university of technology, tehran, iran mehdi hassanbeygi m.s. student, department of petroleum engineering, tehran petroleum research center, petroleum university of technology, tehran, iran riyaz kharrat professor, department of petroleum engineering, tehran petroleum research center, petroleum university of technology, tehran, iran

in many reservoirs, after water flooding, a large volume of oil is still left behind. hot water injection is the most basic type of thermal recovery which increase recovery by improved sweep efficiency and thermal expansion of crude.in the present work, the effects of injection rate and the temperature of the injected water were surveyed by using core flooding apparatus. water flooding was perf...

2003
Justin Lipman Paul Boustead Joe F. Chicharo John Judge

Information dissemination (flooding) forms an integral part of routing protocols, network management, service discovery and information collection (sensing). Given the broadcast nature of ad hoc network communications, information dissemination provides a challenging problem. This paper introduces Utility Based Flooding (UBF). UBF is a distributed optimised flooding mechanism for ad hoc network...

Journal: :CoRR 2012
Tongguang Zhang

SYN flooding attacks generate enormous packets by a large number of agents and can easily exhaust the computing and communication resources of a victim within a short period of time. In this paper, we propose a lightweight method for detecting SYN flooding attack by non-parametric cumulative sum algorithm. We experiment with real SYN flooding attack data set in order to evaluate our method. The...

Journal: :Journal of The Korean Society of Civil Engineers 2013

Journal: :FEMS microbiology ecology 2015
Lucía Ferrando Ana Fernández Scavino

Flooding impacts soil microbial communities, but its effect on endophytic communities has rarely been explored. This work addresses the effect of flooding on the abundance and diversity of endophytic diazotrophic communities on rice plants established in a greenhouse experiment. The nifH gene was significantly more abundant in roots after flooding, whereas the nifH gene copy numbers in leaves w...

Journal: :Annals of botany 2009
Xin Chen Heidrun Huber Hans de Kroon Anton J M Peeters Hendrik Poorter Laurentius A C J Voesenek Eric J W Visser

BACKGROUND AND AIMS Intraspecific variation in flooding tolerance is the basic pre-condition for adaptive flooding tolerance to evolve, and flooding-induced shoot elongation is an important trait that enables plants to survive shallow, prolonged flooding. Here an investigation was conducted to determine to what extent variation in flooding-induced leaf elongation exists among and within populat...

Wettability alteration has been a sophisticated issue for scientists and reservoir engineers since early 20th century; thus, many investigations have been carried out to determine wettability and enhance it to ideal conditions, which leads to improvement in oil recovery. Dilute surfactant flooding has been approved as one of the noteworthy methods in chemical flooding. Several petroleum reservo...

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