نتایج جستجو برای: cdo cds

تعداد نتایج: 8722  

Journal: : 2022

Bu çalışmada, saf ve nadir toprak elementlerinden olan Lantan (La) katkılı kadmiyum oksit (CdO) nanoparçacıkları sol-jel yöntemi ile üretildi. Katkılama farklı mol yüzdelerinde (1%, 3%, 5% 7%) gerçekleştirildi. Üretilen nanoparçacıklar FE-SEM, EDX, XRD FT-IR analizleri karakterize edildi. Farklı oranlardaki La CdO nanoparçacıkların dielektrik sabiti, kayıp faktörü ac iletkenlik değerleri oda sı...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز 1388

نانوذرات در چند سال اخیر به علت خواص فیزیکی و شیمیایی منحصر به فرد خود که با خواص شان در حالت حجمی متفاوت هستند، از توجه زیادی برخوردارند. این خواص، به علت ساختار و سطح نانو مقیاس آن ها ظاهر می شوند. نانوذرات دارای کاربرد هایی در کاتالیزورها، سرامیک ها و دیگر وسایل اپتوالکترونیک هستند. از میان این مواد نانوذرات اکسید فلزی از اهمیت فناوری در سلول های خورشیدی، حسگرهای شیمیایی و غیره برخوردارند. ک...

2013
Bünyamin Şahin

Nanostructured cadmium oxide (CdO) films were fabricated on glass substrates from alkaline baths containing saccharin as an additive by a successive ionic layer adsorption and reaction (SILAR) method. The effects of saccharin concentration in the bath on the structural, morphological, and optical properties were studied by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), ph...

2008
Areski COUSIN Jean-Paul LAURENT

This paper is dedicated to the risk analysis of credit portfolios. Assuming that default indicators form an exchangeable sequence of Bernoulli random variables and as a consequence of de Finetti’s theorem, default indicators are Binomial mixtures. We can characterize the supermodular order between two exchangeable Bernoulli random vectors in terms of the convex ordering of their corresponding m...

Journal: :MicrobiologyOpen 2022

Bovine tuberculosis is a common disease affecting cattle and wildlife worldwide. Mycobacterium bovis circulation in decreases the efficacy of surveillance control programs cattle. Strains European 3 clonal complex are most frequent France. The aim our work was hence to investigate role played by species two M. strains circulation. WGS collected between 2010 2017 distinct areas (Nouvelle-Aquitai...

A. Tadjarodi, H. Kerdari M. Imani

Cadmium oxide rhombus-shaped nanostructure was synthesized using hydrothermal process followed by heating treatment. Clearly, X-ray diffraction pattern demonstrated the formation of CdO crystalline phase. Scanning electron microscopy (SEM) showed that the obtained rhombus-like structure is composed of nanoparticles with the average size of 29 nm. In addition, we evaluated adsorption of org...

The zinc-cadmium oxide (ZnO-CdO) nanocomposites with different weight percentages of cadmium oxide (CdO) nanoparticles were successfully synthesized by the sonochemical method using zinc and cadmium nitrates as precursors to probe their nano-structured surfaces for the decomposition reactions of chloroethyl phenyl sulfide (CEPS) as a surrogate of sulfur mustard agent simulant. Scanning electron...

2003
Christian Bluhm

: Collateralized debt obligatons (CDOs) constitute an important subclass of asset backed securities. The evaluation of CDOs relies on mathematical modeling and on simulation as well as analytic and semi-analytic approaches, depending on the underlying asset pool and the cash flow structure of the transaction. This paper is an introductory survey on CDO modeling. It starts with a ‘mini course’ o...

2009
Gilles Pagès

We propose a new Quantization algorithm for the approximation of inhomogeneous random walks, which are the key terms for the valuation of CDO-tranches in latent factor models. This approach is based on a dual quantization operator which posses an intrinsic stationarity and therefore automatically leads to a second order error bound for the weak approximation. We illustrate the numerical perform...

Journal: : 2023

Bu çalışmada, magnezyum oksit (MgO), kadmiyum (CdO) ve MgO-CdO nanoparçacıkları sol-jel sentezleme yöntemiyle üretildi. Magnezyum kaynağı olarak asetat tetrahidrat Mg(CH3COO)2•4H2O, dihidrat (C₄H₆CdO4·2H₂O) kullanıldı. Sol-jel nanoparçacık işleminde çözücüler 80°C sıcaklıkta 4 saat manyetik karıştırıcıda çözündürülerek gerçekleştirildi. Çözünen nanoparçacıkların süzme, kurutma, havanda dövme ta...

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