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اساسی ترین فعالیت در میان فعالیت های متعدد یک زنجیره ی تأمین، فرایند خرید و اساسی ترین تصمیم در مرحله ی مدیریت خرید، انتخاب تأمین کننده است. تأثیر فرایند انتخاب تأمین کننده ی شایسته بر عملکرد سازمان به عنوان یک وظیفه ی حیاتی امری است غیر قابل انکار که طی سالیان اخیر همواره مطرح بوده است. در این مقاله به منظور بررسی تأثیر انتخاب تأمین کننده بر میزان سوددهی و رضایت مندی مشتریان در یک واحد تولیدی ...
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the leukocyte mi gration test (lht) in the prese nce of na t i v e igg, and l l e v amis ole were studi ed in 9 patients su f f e ring from cla s s i c a l r h e umatoid ar.thri t i s be f o r e a nd after treatment with l evamisole . fi f teen heal thy b l o od dono rs we r e s i mi l a r ly l nvestig ated a s cont r o ls . t- l ympho c yte s ub-popu lations (to ta l a nd active) a nd b-c el l...
background: p e r io d ontal d i s e ase i s a c h ro ni c des t ructi v e d i s e a s e w h ich o ccurs in adults, young people, and children . perio d ontal disease and periodontal pathoge n s ha v e been associ a ted with se v er a l syste m ic dise a ses and more recen t ly, se v e r a l stu d ies have sug g es te d the relat i o n ship bet w een p e rio d ontal d isease and cancer. stu d...
the present paper is concerned with the structural characteristics and contents of the russian resistance poets from the outset up to the end of the world war ii, 1941-1945. regarding the linguistic and literary structures of the resistance poetry of this period, such features as changes in the lexical structure of poems, outspokenness, proximity of poetry to slogans can be easily observed. sem...
the aim of this study was to investigate the barrier properties of cellulose nanocrystals-pvananocomposites. nanocomposite films with different filler loading levels (3, 6, 9 and 12% by wt) weredeveloped by solvent casting method. the effect of cellulose nanocrystals on the barrier properties ofthe nanocomposites was studied. to this end, moisture absorption, water vapor permeability (wvp),oxyg...
activities of thirty bacterial strains obtained from plants rhizosphere in different areas against phytophthora drechsleri were assessed through in vitro and greenhouse experiments. dual culture and extracellular metabolites tests were used in in vitro assays. the bacterial strains inhibited growth of p. drechsleri, the highest inhibition zones was belonged to t17-4 strain with 61.904% in dual ...
in this research, moisture sorptions of sayer date were determined at 20, 30, 40 and 60°c, using the standard static gravimetric method developed by the european cooperation project cost 90. several mathematical models, namely gab, bet, iglesias & chirif and halsey were employed to fit the experimental data through non-linear regression. results indicate that equilibrium moisture content increa...
introduction atmospheric circulation patterns leads to different weather conditions and rainfall regime change is controlled by seasonal and irregular variations of atmospheric circulation pattern. variety and climate change, such as drought and flood result in changes in the spatio-temporal of precipitation, one of the important parameters conditions mentioned, heterogeneity in moisture transm...
nitrogen forms exert significant effects on physiological and morphological characteristics of plant. in this study, the effects of ammonium, nitrate, and ammonium-nitrate on pepper plants were investigated in soil culture, as well as in solution culture. in the soil culture, 3, 4-dimethylpyrazole phosphate (dmpp) was used as a standard nitrification inhibitor to guarantee the presence of ammon...
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