نتایج جستجو برای: chemical control

تعداد نتایج: 1667188  

Journal: :Proceedings of the New Zealand Weed Control Conference 1956

Journal: :TRENDS IN THE SCIENCES 2011

Journal: :Japanese Journal of Phytopathology 2014

Journal: :Journal of Neurology, Neurosurgery & Psychiatry 1987

Hassan Salarieh Mohammad Shahrokhi, Shabnam Rasoulian

In this paper, control of a non-isothermal continuous stirred tank reactor in which two parallel autocatalytic reactions take place has been addressed. The reactor shows chaotic behavior for a certain set of reactor parameters. In order to control the product concentration, an optimal state feedback controller has been designed. Since concentrations of reactor species are ...

Very little information exists in regards to the control options available for potato flea beetles, Epitrix spp. This short review covers both chemical and ecological options currently available for control of Epitrix spp. Synthetic pyrethroids are the weapon of choice for the beetles. However, the impetus in integrated pest management is to do timely (early-season) applicatio...

Hassan Salarieh Mohammad Shahrokhi, Shabnam Rasoulian

In this paper, a reaction system consisting of two parallel, non-isothermal autocatalytic reactions in a Continuous Stirred Tank Reactor (CSTR) has been considered. Reactor chaotic behavior is possible for certain values of system parameters. Two types of controllers are designed and compared in order to control both the reactor temperature and the product concentration. T...

Journal: :international journal of advanced biological and biomedical research 2013
samaneh gholami mehdi minbashi eskandar zand ghorban noormohammadi

to assess the effect of non chemical management of weed control on forage sorghum (sorghum bicolor) a field study was conducted in varamin, iran during 2010 crop year in a three- replicated- split factorial experiment laid out in randomized complete block design with four weeding levels (w1= one time cultivation at 3-leaf stage using a duck foot cultivator, w2= two times cultivation at 3 and 5-...

Journal: :physical chemistry research 2015
parivash mashayekhishams alireza banaei

in this work, ag-cu nanoparticles (with different percentages of copper, 10%, 25%, 50%, 75% cu) were synthesized by wet chemical method. copper(ii) sulfate and silver nitrate were taken as metal precursors, ascorbic acid as reducing agent and anhydride maleic (ma) as a modifier. the prepared nanoparticles were characterized by means of x-ray diffraction (xrd) technique and scanning electron mic...

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