نتایج جستجو برای: geobotanical method
تعداد نتایج: 1630169 فیلتر نتایج به سال:
On the basis of experiment, founded in 1946 with a seven-component, traditional at that time grass mixture, consisting tall grass, low-grass and legumes, effect fertilizers on productivity botanical composition herbage was studied. In first years use, completely corresponded to sown species. With long-term depending meteorological conditions, has changed. place short-term types cereals, self-re...
in solvo-hydrothermal method, xrd pattern was indicated presence of intermediate of ammonium octatmolybdate and ammonium tetramolybdate, which were changed to stble phase of ?-moo3 annealing. sem images were indicated nanoparticle with semispheical morphology and tem image was demonstrated nanoparticles with a diameter size of 25nm. also in impregnate method. the xrd pattern was shown high crys...
Plant species were collected in the botanical-geographic regions of Lankaran-Mughan and Lankaran lowland located on southern part Caspian coast. During ecological-geobotanical studies we conducted southern coast, obtained information about morphological features systematic taxa wild flora Lankaran-Mugan botanical-geographical regions. In this article describe ecology distribution Dianthus cyri...
in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...
Under the action of various forms human activity, there was a violation integrity and unity vegetation cover steppe zone Ukraine. The consequence this is fragmentation vegetation. It established that decrease in area plant communities leads to an increase their dependence on environmental factors. An important component phytocoenotic cover, first all forest which biotic basis functioning biosph...
The article presents information on the biological resources of bracken fern (Pteridium aquilinum (L.) Kuhn) in coniferous forests Altai Krai. Bracken is one most widespread ferns It often dominates grass cover both deciduous and forests. author gives a morphological description plant, characterizes features growth development, considers influence environmental factors (temperature, humidity, l...
in iran we already use laminate tubes only in cosmetics industry. laminate tube manufacturers via using the most modern technology of the world, faced with the laminate tube market being saturated in cosmetics industry for packaging the cosmetic creams and toothpaste. but considering the great food market and therefore laminate tube features such as beautiful packaging, ease of use for the fina...
دیوارهای خاک مسلّح ، دیوارهای مقرون به صرفه ای هستند که امروزه کاربرد زیادی در پروژه های عمرانی دارند. پایداری دیوارهای خاک مسلّح از دو جنبه پایداری خارجی و پایداری درونی مدّ نظر است. پایداری درونی دیوار شامل پایداری در برابر گسیختگی و بیرون کشیدگی مسلّح کننده ها می باشد. جهت بررسی پایداری درونی دیوار بایستی نیروی مسلّح کننده ها محاسبه شود. برای محاسبه این نیروها روش های مختلفی ارائه شده که در این ت...
the purpose of this study was the relationship between problem – solvi ability with fdi cognitive style of students.the research method was correlation method. for data analysis pearson test was used. statistical society in this research was all the students of alligoodarz city in 1391-92 year.to sampling of statiscal population was used sampling multi-stage random the size of sample selected 2...
a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...
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