نتایج جستجو برای: 1hnmr study
تعداد نتایج: 3968844 فیلتر نتایج به سال:
In this work, a new cadmium(II) complex namely the (1,4-diazabicyclo[2.2.2]octane)(meso-tetrakis(4-tert-methoxyphenyl)porphyrinato)cadmium(II) with formula [Cd(TMPP)(DABCO)] (I) (DABCO = 1,4-diazabicyclo[2.2.2]octane) was successfully synthetized. The structure of have been characterized by FT-IR, 1HNMR, UV–visible, fluorescence spectroscopies and single crystal X-ray diffraction technique. DFT...
مقدمه: دیابت نوع 2 بیماری شایعی است که طیف گستردهای از افراد جامعه را دربر میگیرد. پاسخ نامناسب به انواع روشهای درمانی این عارضه را بهصورت یک معضل برای بیماران و گروه درمانی درآورده است. لیزردرمانی داخل وریدی (intravascular laser irradiation of blood ,ilib) در درمان بیماریهای مختلف ازجمله دیابت مورد استفاده قرار گرفته است. بررسی طیفسنجی مغناطیس هسته 1hnmr(nuclear magnetic resonance)،...
Paper cultural heritages are valuable historical records and also abound in resources. Due to its organic property, paper is susceptible aging, destruction by environmental pollution human factors. At present, many countries the world facing problem of conservation. Coating reinforcement one methods for conservation, which choice reinforcing resin key. A transparent polyurethane, based on epoxy...
this study investigates the problem of translating religious allusions in persian literature, namely the ones borrowed from quranic verses and hadiths. the purpose of this study is to shed light on how different translators dealt with such a task and also to provide guidelines for translators in coping with religious allusions.
this study was conducted to investigate the effect of favorite-text on iranian intermediate efl learners’ vocabulary development. sixty learners from nour-al-mahdi english institute participated in the present study. having been homogenized by oxford placement test (opt), they were randomly assigned into two groups of 30, control and experimental. then both groups sat for a pre-test which was a...
Antimicrobial textiles have played an increasingly important protection role in the medical field. With this aim, Schiff bases and nanometal complexes on cotton fabric were situ synthesized for achieving conventional fabric’s highly efficient durable UV antibacterial properties. Herein, a new base derived from condensation reaction of 2,4-dihyroxybenzaldehyde with p-amino aniline was synthesize...
Suzuki cross coupling reaction is one of the most famous organic reactions 20th century’s chemistry. It deemed as in field a very effective method for making carbon–carbon bonds. has been extensively utilized synthesis many carbon molecules including complex ones.Syntheses 2-diethylamino-4H-7-(Het) aryl pyrido [1,2-a] [1,3,5] triazin-4-ones are currently under investigation order to obtain grea...
Our recent work displays the successful preparation of Schiff_bases that carried out between hexane-2,5-dione and 2 moles (Z)-3-hydrazineylideneindolin-2-one forming in Schiff-bases-(L), Which turn allowed combining with each next metal ions: (M2+) = Ni, Mn, Zn, Cu Co complexes_ high stability. The formation resulting Schiff_ bases (L) is detected spectrally using LC_Mss which gave approximatel...
introduction: diabetes mellitus is an growing national and international public health concern. the number of people affected by diabetes in world by 2030 will be 69% in developing countries. regular physical activity plays a key role in the management of type 2 diabetes melitus, particularly glycemic control. it has been recommended that peoples with type 2 diabetes participate in moderate-int...
like any other learning activity, translation is a problem solving activity which involves executing parallel cognitive processes. the ability to think about these higher processes, plan, organize, monitor and evaluate the most influential executive cognitive processes is what flavell (1975) called “metacognition” which encompasses raising awareness of mental processes as well as using effectiv...
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