نتایج جستجو برای: 1300 a h

تعداد نتایج: 13517649  

2007
Douglas H. Frank Nils Drews Scott Schaefer

I study the impact of East-West internal migration in Germany after the fall of the Berlin Wall on wages and unemployment rates in West German local labor markets. Because migrants’ choice of destination is likely to be correlated with local labor market conditions, I instrument migration ‡ows into each western labor market with the distance to each of the East German regions sending migrants a...

Journal: :Science of Sintering 2021

Solid-state reaction between BaTiO3 and Fe2O3 was used to produce a multiferroic heterostructure composite. Commercial Fe(NO3)3?9H2O were suspended in ethanol for 30 minutes an ultrasound bath. The prepared mixture thermally processed at 300?C 6 h. Sintering 1300?C 1 h resulted of different phases, BaTiO3, BaFe12O19 Ba12Ti28Fe15O84, which confirmed by x-ray powder diffraction. A dense microstru...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه شیمی و مهندسی شیمی ایران - پژوهشکده علوم 1391

ترکیبات پیریمیدین و کرومن به دلیل طیف وسیعی از اثرات دارویی و بیولوژیکی نظیر خواص ضد باکتری، ضد قارچی، ضد سرطانی و... بسیار مورد توجه محققین قرار گرفته شده اند. بنابراین در این پایان نامه سنتز ترکیبات 2-آمینو پیریمیدین (a-h54)، سنتز ترکیب جدید 2-آمینو-کالیکس[4]آرن پیریمیدین (56)، سنتز ترکیبات 2-آمینو-h4-بنزو[h]کرومن (a-g66) و همچنین سنتز ترکیبات 3-آمینو-h1-بنزو[f]کرومن (a-c67) از طریق واکنش چند...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم 1391

فرض کنید a یک جبر باناخ باشد. ما در این پایان نامه ایده آل های بسته i از a که اولین گروه کوهمولوژی از a با ضرایبی در i^* است را مطالعه می کنیم یعنی 0=( a,i^*) h^1 . همچین ایده آل های بسته را وقتی a میانگین پذیر ضعیف یا دوهمواری است و نیز بعضی خواص ارثی ایده آل های میانگین پذیر را بررسی می کنیم.

A powder mixtures of 18.72% wt, 17.67% wt Al2O3 and 63.6% wt zircon were prepared and milled in a planetary ball milled for one up to 10 hours in presence of air. After removal Iron impurity from as-milled samples, they were isothermally heated in temperature range of 1300-1450 0C for one hour in an air atmosphere. After cooling the samples, they were studied using XRD analyses. The XRD and PSA...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1377

chapters 1 and 2 establish the basic theory of amenability of topological groups and amenability of banach algebras. also we prove that. if g is a topological group, then r (wluc (g)) (resp. r (luc (g))) if and only if there exists a mean m on wluc (g) (resp. luc (g)) such that for every wluc (g) (resp. every luc (g)) and every element d of a dense subset d od g, m (r)m (f) holds. chapter 3 inv...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1390

section{introduction} the concept of {sl cartan geometry} appeared at the beginning of the twentieth century, when {e}lie cartan was working on the so-called {sl equivalence problem}, the aim of which is to determine whether two given geometric structures can be mapped bijectively onto each other by some diffeomorphism. this problem can be considered in many different contexts, such as ...

Journal: :nutrition and food sciences research 0
elham zeyninejad department of community nutrition, national nutrition and food technology research institute, faculty of nutrition sciences and food technology, shahid beheshti university of medical sciences, tehran, iran. nasrin omidvar department of community nutrition, national nutrition and food technology research institute, faculty of nutrition sciences and food technology, shahid beheshti university of medical sciences, tehran, iran. tirang neyestani laboratory of nutrition research, national research institute, faculty of nutritional science and food technology, shahid beheshti university of medical sciences, tehran, iran. anahita houshiarrad department of nutrition research, national nutrition and food technology research institute, faculty of nutrition sciences and food technology, shahid beheshti university of medical sciences, tehran, iran. mohammad reza eshraghian department of epidemiology and biostatistics; faculty of public health, tehran university of medical sciences, tehran, iran. ame stormer hellen keller international

background and objectives: this study aimed to develop and validate a food frequency questionnaire (ffq) for measuring calcium intake in 9-13 years old children in tehran, iran. materials and methods: a 56-item ffq containing main contributors of calcium in iranian diet was designed. criterion validity of the calcium specific ffq was evaluated through comparing its result with five 24-h recalls...

Journal: :Livret-annuaire 2021

Programme de l’année 2018-2019 : I. Les lettres créance en Occident (à partir du XIIIe siècle). — II. L’expérience l'incertitude dans les échanges diplomatiques sources normatives, chroniques (France, péninsule Ibérique, Empire, Italie). 2019-2020 l’incertitude (suite).

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