نتایج جستجو برای: drought conditions 20 c and 6 bar
تعداد نتایج: 17230521 فیلتر نتایج به سال:
We conducted a 6 year field experiment in an evergreen Quercus ilex forest where we simulated the increased drought projected by Global Circulation Models (GCM) and ecophysiological models for the immediate decades. We tested the hypothesis that enhanced drought will change C, N, P, K, Ca, Fe, Mg, Mo and S concentrations of the widespread moss Hypnum cupressiforme Hedw. and its capacity to abso...
Grasspea (Lathyrus sativus L.) is an underutilized pulse crop which can withstand adverse environmental conditions such as drought, heat, salinity, waterlogging, pest and diseases. To facilitate hybridization studies, pollen cryoconservation was attempted in L. sativus. Among the different media combination tested for vitro germination, BK medium with 15% sucrose optimal. Pollen viability at st...
چکیده : نظام انتخاباتی قواعد و چار چوب های به رسمیت شناخته شده ای است که بیانگر چگونگی تبدیل آرای مردم به مناصب و پست های سیاسی است. این نظام انتخابات باید به گونه ای عمل کند که نتیجه آن فراهم شدن مکانیسم و ساز و کار مطلوب و مناسب برای برگزاری انتخابات سالم و رقابتی باشد. به نظر می رسد نظام انتخاباتی جمهوری اسلامی ایران دارای ضعف ها و نواقصی است که به سبب آن ها نمی توان انتخابات مطلوب را برگزا...
The recovery of bioactive products with green processes is a critical topic for the research and industry fields. In this work, application solid–liquid (SLE), microwave-assisted extraction (MAE) aq. ethanol 90% v/v supercritical fluid (SFE) CO2 biocomponents from Scenedesmus obliquus studied. effects examined were temperature (30–60 °C), time (6–24 h), solvent-to-biomass ratio (20–90 mLsolv/gb...
The variability in acid phosphatase activities was studied with an objective to find out its physiological role in response to drought stress. The effect of drought stress on acid P-ase activity in relationship with phosphorus was studied in drought tolerant (C-306) and drought sensitive (HD-2004) cultivars of wheat. Drought stress was imposed by withholding water irrigation to the growing seed...
to determine the effects of drought stress and fe and zn spraying on two annual medics, namely, medicago polymorph cv serena and medicago scutellata cv comertial, a field experiment as a split factorial based on a randomized complete blockdesign in 3 replications in allborze agricultural research center, in karaj was conducted. spraying treatments include distilled water (control), fe, zn and f...
Water availability is a major limitation for agricultural productivity. Plants growing in severe arid climates such as deserts provide tools for studying plant growth and performance under extreme drought conditions. The perennial species Calotropis procera used in this study is a shrub growing in many arid areas which has an exceptional ability to adapt and be productive in severe arid conditi...
Standard maize starch was hydrothermally treated by Instantaneous Controlled Pressure Drop (DIC) process at three pressure levels (1, 2 and 3 bar) corresponding to the temperatures of 100, 122 and 135 °C (at 13–27% moisture), respectively. The structural effects of various hydrothermal conditions were examined with differential scanning calorimetry (DSC) and wide-angle X-ray diffraction. In ord...
this work is presented in five parts. in the first part preparation of the starting complex [pt(c^n)cl(dmso)], 1, in which c^n = n(1),c(2?)-chelated, deprotonated 2-phenylpyridine, and dmso = dimethylsulfoxide, and its reaction with 1 equiv of the biphosphine ligands bis(diphenylphosphino)amine, dppa, or bis(diphenylphosphino)methane, dppm, to give the complex [pt(c^n)cl(dppa)], 2, or [pt(c^n)c...
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