نتایج جستجو برای: isolation

تعداد نتایج: 130932  

Journal: :فصلنامه علمی پژوهشی گیاهان دارویی 0
a hadjiakhoondi department of pharmacognosy, medicinal plants research center, faculty of pharmacy, tehran university of medical sciences, tehran m pirali - hamedani department of medicinal chemistry, faculty of pharmacy, tehran university of medical sciences, tehran, iran, tel: +98-21-66959090, fax: +98-21-66461178 mr verdian-rizi department of pharmacognosy, medicinal plants research center, faculty of pharmacy, tehran university of medical sciences, tehran sh rezazadeh department of pharmacognosy and pharmaceutics, institute of medicinal plants, acecr, tehran

background: there are eight taxus species and two hybrids in the world and taxus baccata l. (european yew) is the single representative in iran. until now, a large number of taxoids possessing different skeleton systems, as well as lignans, flavonoids, steroids and sugar derivatives have been isolated from various taxus species. taxoids are highly oxygenated diterpenes isolated from different s...

Journal: :iranian journal of veterinary research 2011
y. asadpour m. banani s. a. pourbakhsh

ornithobacterium rhinotracheale (ort), a species of bacteria, is known to be associated with respiratorydisease, growth retardation, mortality and decreased egg production. the aim of the present study was todetermine seroprevalence of the infection and to identify the microorganism by bacteriological and molecularmethods. in this study, 460 serum samples and also 290 tracheal swabs were collec...

Journal: :iranian chemical communication 2016
abdolreza abri mojgan maleki

elaeagnus angustifolia has many potential applications in drugs, detergents, perfumes, herbal teas and show various biological and pharmacological activities, such as anti-inflammatory, antipyretic and other effective treatment of disease. gallic acid (ga) and its derivative methyl gallate (mg) are well studied plant phenolics. they have exhibited anticancer effects in several cancer cell lines...

Journal: :progress in biological sciences 2015
faezeh fatemi abbas rashidi samaneh jahani

bioleaching is the extraction of metals from their ores through the use of microorganisms. inthis process, the use of native bacteria leads to achieve more yields of metals. so, in the presentstudy, native sulfur-oxidizing bacterium in potentiality of uranium extraction was isolated fromghachin mine in iran and identified by partial gene sequencing. for this purpose, the watersamples were colle...

Journal: :iranian journal of biotechnology 2010
farhad farzan seyed abbasshojaosadati shojaosadati hossein abdul tehrani

several species of magnetotactic bacteria have been discovered recently. these bacteria synthesize intracellular magnetic nanoparticles in specific sizes and shapes and arrange them in chains. these particles called magnetosomes and can be used for drug-delivery, cell-targeting and hyperthermia. magnetotactic bacteria navigate along the magnetic field; this process is known as ‘magnetotaxis’ wh...

Journal: :iranian rehabilitation journal 0
farbod fadai university of social welfare and rehabilitation sciences, tehran, iran.

the majority of the long stay psychiatric patients who are in need of rehabilitation suffer from schizophrenia. most of them enter the old age with this illness, and besides the consequences of schizophrenia, they are facing the deprivation and misery due to the old age. in contrast to the previous decades in which there was no effective treatment for schizophrenia, today with the immediate dia...

Journal: :journal of agricultural science and technology 2010
m. keshavarzi

in this research, 514 soil samples and dead larvae were collected from khorassan, lorestan, tehran, ghazvin, east azarbaijan, west azarbaijan, mazandaran and hamedan provinces. b. thuringiensis was isolated from the samples using a heat-acetate method and the isolates were identified and classified using biochemical tests. the frequency of b. thuringiensis in soils with different plant communit...

Journal: :journal of agricultural science and technology 2010
h. saremi l. w. burgess

environmental factors mainly temperature are believed to determine the distribution and population dynamics of fusarium species in a natural ecosystem. species may be restricted in their distribution by adaptation to specific sets of soil environmental conditions. population dynamics of five fusarium species representative of different climatic conditions were studied at three levels of tem...

Social isolation is one prevalent social deficiencies among adolescents. Reasons of social isolation in adolescents are not clear yet. One of the variables that have attracted researchers in recent years to the etiology of social isolation is the dependence on new communication technologies, especially the Internet. This study aimed to determine the relationship between cyberspace dependency an...

Introduction: Psychological stresses influence brain functions such as learning and memory. Environmental factors like types and durations of stress affect brain responsiveness. This study investigated the effects of two subchronic social and isolation stresses on learning, memory, adrenal glands weight and corticosterone levels in the hippocampus and frontal cortex. Methods: Eighteen male ...

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