نتایج جستجو برای: water uptake

تعداد نتایج: 670865  

2015
Stefania Tron Gernot Bodner Francesco Laio Luca Ridolfi Daniel Leitner

Drought stress is a dominant constraint to crop production. Breeding crops with adapted root systems for effective uptake of water represents a novel strategy to increase crop drought resistance. Due to complex interaction between root traits and high diversity of hydrological conditions, modeling provides important information for trait based selection. In this work we use a root architecture ...

Journal: :پژوهش آب در کشاورزی 0
فاطمه کاراندیش استادیار گروه مهندسی آب دانشگاه زابل. ام البنی توراج زاده دانش آموخته ی کارشناسی ارشد آبیاری و زهکشی گروه مهندسی آب دانشگاه زابل.

population growth as well as global fresh water shortage problem have necessitated the use of unconventional water resources in agricultural sector, as the largest consumer of fresh water, especially in arid and semi-arid regions. in this study, the effect of four irrigation methods on yield, uptake of water and important nutrients, and the salt accumulation in soil was investigated using a com...

Journal: :iranian journal of basic medical sciences 0
shokouhsadat hamedi department of traditional pharmacy, faculty of traditional medicine, tehran university of medical sciences, tehran, iran mohammad reza shams-ardakani department of pharmacognosy, school of pharmacy, tehran university of medical sciences, tehran, iran omid sadeghpour herbal medicine department, research institute for islamic and complementary medicine, iran university of medical sciences, tehran, iran gholamreza amin department of pharmacognosy, school of pharmacy, tehran university of medical sciences, tehran, iran dawood hajighasemali faculty of traditional medicine, iran university of medical sciences, tehran, iran hossein orafai department of pharmaceutics, school of pharmacy, mashhad university of medical sciences, mashhad, iran

objective (s): mucoadhesive disc is one of the various routes of drug delivery for curing buccal disease.materials and methods:everydiscs containing 70 mg stem bark extract of ziziphus jujuba were formulated  by using carbopol 934, pvp k30 and gelatin as polymers. discs were made by granulation  and direct compression. discs were standardized based on the total phenol.  properties such as in vi...

Journal: :Hypertension 1991
S Vasdev C A Sampson V M Prabhakaran

This study examined the effect of moderate ethanol intake on systolic blood pressure, platelet cytosolic free calcium, aortic calcium, and rubidium-86 uptake in Wistar-Kyoto rats. Twelve Wistar-Kyoto rats, aged 6 weeks, were given 5% ethanol in drinking water the first week followed by 10% ethanol in drinking water for the next 6 weeks. Twelve control animals were given regular tap water. Systo...

Abbas Ahmadi, Ali Khalaj, Ali Rahiminejad Amir Reza Jalilian, Azadeh Paknafas Mohsen Kamalidehghan Shahzad Feizi Yousef Fazaeli

Radiolabeled porphyrins are potential tumor avid radiopharmaceuticals because of their impersonation in the human body, ability to complex various radionuclides, water solubility, low toxicity etc. in this work a radiogallium porphyrin complex has been developed. [67Ga] labeled 5,10,15,20-tetrakis(3,4-dimethoxyphenyl) porphyrin ([67Ga]-TDMPP) was prepared using freshly prepared [67Ga]GaCl3 and ...

Abbas Ahmadi, Ali Khalaj, Ali Rahiminejad Amir Reza Jalilian, Azadeh Paknafas Mohsen Kamalidehghan Shahzad Feizi Yousef Fazaeli

Radiolabeled porphyrins are potential tumor avid radiopharmaceuticals because of their impersonation in the human body, ability to complex various radionuclides, water solubility, low toxicity etc. in this work a radiogallium porphyrin complex has been developed. [67Ga] labeled 5,10,15,20-tetrakis(3,4-dimethoxyphenyl) porphyrin ([67Ga]-TDMPP) was prepared using freshly prepared [67Ga]GaCl3 and ...

2017
Long Zhao Zongze Yang Qiaobing Guo Shun Mao Shaoqiang Li Fasheng Sun Huan Wang Chunwu Yang

Halophytes are remarkable plants that can tolerate extremely high-salinity conditions, and have different salinity tolerance mechanisms from those of glycophytic plants. In this work, we investigated the mechanisms of salinity tolerance of an extreme halophyte, Kochia sieversiana (Pall.) C. A. M, using RNA sequencing and physiological tests. The results showed that moderate salinity stimulated ...

2015
J. G. Pérez-Pérez I. C. Dodd

Previous studies with partial rootzone drying (PRD) irrigation demonstrated that alternating the wet and dry parts of the rootzone (PRD-Alternated) increased leaf xylem ABA concentration ([X-ABA]leaf) compared with maintaining the same wet and dry parts of the rootzone (PRD-Fixed). To determine the relative contributions of different parts of the rootzone to this ABA signal, [X-ABA]leaf of pott...

2006
Werner Borken Eric A. Davidson Kathleen Savage Eric T. Sundquist Paul Steudler

Soil moisture strongly controls the uptake of atmospheric methane by limiting the diffusion of methane into the soil, resulting in a negative correlation between soil moisture and methane uptake rates under most non-drought conditions. However, little is known about the effect of water stress on methane uptake in temperate forests during severe droughts. We simulated extreme summer droughts by ...

1999
F. I. M. Thomas M. J. Atkinson

To test the hypothesis that ammonium uptake by coral reefs is mass-transfer limited and to determine the relative effects of water velocity and community roughness on uptake, we measured the rates of ammonium uptake by reefs at velocities ranging from 3.3 to 37.5 cm sI. Two assemblages of coral rubble (relatively rough and relatively smooth) and two assemblages of live coral (Porites compressa ...

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