نتایج جستجو برای: lack of concentration
تعداد نتایج: 21175937 فیلتر نتایج به سال:
abstract background: while nursing workload is a worldwide challenge, less attention has been given to the determining factors. understanding these factors is important and could help nursing managers to provide suitable working environment and to manage the adverse outcomes of nursing workload. the aim of this study was to discover nurses’ experiences of determinant factors of their workload. ...
the experiment was done in a factorial design based on completely randomized with three factors and five replications in vitro. the first factors, plant extract (nine plant species), the second factor, solvent (5 solvent) and the third factor, concentration (3 concentration) were considered. in pot condition, the experiment was carried out in factorial based on completely randomized design with...
industrial revolution, colonialism and spreading of patterns of development and consequently the vast rural and urban migrations and centralism in recent century caused the creation of unbalanced population distribution pattern in iran. in addition to areas in which inequalities of environmental and productive resources increase space disparity of distribution of populations, in arease like aze...
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the experiment in this study was conducted as a completely randomized block design with ten treatments and four replications. treatments included: to- control, t1- 50g of zn per tree as broadcast application, t2-100g zn per tree, broadcast application, t3- 200g zn per tree as broadcast application, t4- 50 g zn per tree as band application, t5- 50g zn per tree, band application, t6-100g zn per t...
background and purpose: according to developments related to the relative autonomy of universities and acquired extensive powers by the board of trustees of universities of medical sciences and healthcare services in a twenty-year perspective of country and in the context of the fourth and fifth socio-economic cultural development of country, necessity of developing financial and transactional ...
mercaptans are commonly present in petroleum products. their foul odor and highly corrosive nature make them the most undesirable sulfur compounds so they should be removed because of environmental issues. merox process is used for oxidation of mercaptans to disulfide using air in the presence of alkaline solution and merox catalyst. in this paper, due to lack of information about the kinetic o...
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