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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...
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...
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...
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...
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...
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 ...
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...
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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