نتایج جستجو برای: plant samples
تعداد نتایج: 795119 فیلتر نتایج به سال:
a large number of single research studies on the effects of strategy-based instruction (sbi) in teaching english as a foreign or second language has been conducted so far. however, the lack of a comprehensive meta-analysis targeting the effectiveness of english language sbi is observed. moreover, the findings of experimental studies regarding the context of the english language, proficiency lev...
1. Plants interact with many organisms, such as microbes and herbivores, and these interactions are likely to affect the establishment and spread of plants. In the context of plant invasions, mycorrhizal fungi and constitutive and induced resistance of plants against herbivores have received attention independently of each other. However, plants are frequently involved in complex multi-trophic ...
Decreasing lignin content of plant biomass by genetic engineering is believed to mitigate biomass recalcitrance and improve saccharification efficiency of plant biomass. In this study, we compared two different pretreatment methods (i.e., dilute acid and cellulose solvent) on transgenic plant biomass samples having different lignin contents and investigated biomass saccharification efficiency. ...
background: heavy metals have detrimental effects on the health of human being. the values of manganese (mn) and lead (pb) in some plant species and soil samples in an arid area of iran were evaluated in this study. methods: the values of pb and mn in 94 plant samples from 8 plant species and the related soil samples in 2010 were considered in shahroud and damghan, central iran. moreover, the s...
Background and purpose: Extensive use of various forms of medicinal plants makes it necessary to continuously monitor the production and supply of these plants. Also, it is important to study metal and pesticide contaminants in medicinal plants in order to prevent hazards from their consumption. This study aimed at investigating the pollutants and mineral element levels in widely consumed medic...
For two large beef processing plants, one located in the southern United States (plant A) and one located in the northern United States (plant B), prevalence of Escherichia coli O157:H7, Listeria spp., Listeria monocytogenes, and Salmonella was determined for hide, carcass, and facility environmental samples over the course of 5 months. The prevalence of E. coli O157:H7 (68.1 versus 55.9%) and ...
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