Materials Literature
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Solar cells are promising alternatives to fossil fuels as they provide a clean source of renewable energy. Organic bulk heterojunction solar cells based on semiconducting polymers have potential as a low cost alternative to silicon solar cells due to reduced material costs, mechanical robustness and simple fabrication…
A new method of optical studies of microdefects under uniaxial compression of transparent specimens is proposed. In the view of the microscope the evolution of the microstructure is traced up to major cracks initiation. The emergence of new and resizing of existing microdefects are revealed and analyzed. Keywords: uni…
近年来， 因2 μm波段激光在军事、医疗和遥感探测等方面有着广阔的应用前景引起了广泛的关注。作为2 μm激光器核心工作物质的激光材料也成为研究的热点。其中该波段光纤激光器用的激光玻璃和光纤已经成为该领域的一个重要研究方向。目前，在石英光纤、锗酸盐玻璃光纤、氟化物玻璃光纤和碲酸盐玻璃光纤基质中已经实现了2 μm激光输出。但是上述几种光纤分别存在稀土掺杂浓度低、成本高、机械强度差等缺点。与石英光纤相比，硅酸盐玻璃稀土掺杂浓度高，与其他多组分玻璃光纤比，硅酸盐玻璃光纤机械强度高，化学稳定性好，原料成本低。虽然国外已经有硅酸盐玻璃光纤2 μm激光的报道，但是国内仍属空白。 本论文以2 μm波段激光输出用掺铥硅酸盐玻璃与光纤作为研究对象，对…
ΣΧΟΛΗ ΕΠΙΣΤΗΜΩΝ ΥΓΕΙΑΣ ΤΜΗΜΑ ΙΑΤΡΙΚΗΣ ΕΡΓΑΣΤΗΡΙΟ ΚΥΤΤΑΡΟΓΕΝΕΤΙΚΗΣ ΚΑΙ ΜΟΡΙΑΚΗΣ ΓΕΝΕΤΙΚΗΣ ΠΡΟΓΡΑΜΜΑ ΜΕΤΑΠΤΥΧΙΑΚΩΝ ΣΠΟΥΔΩΝ « ΓΕΝΕΤΙΚΗ ΤΟΥ ΑΝΘΡΩΠΟΥ» ΔΙΠΛΩΜΑΤΙΚΗ ΕΡΓΑΣΙΑ ΘΕΜΑ: «Ο ρόλος των πολυδύναμων βλαστικών κυττάρων (iPSCs) στην
In conclusion, phase field simulation method is employed to understand the relations between composition and interdiffusion microstructure as well as relations among composition, ferroelectric domain structure and piezoelectric property of ferroelectric MPB materials and helps answering some important questions both i…
Drug delivery to the lungs is difficult to achieve and conventional approaches like intravenous and oral administration of drugs do not effectively deliver drugs to the lungs. The inhalation route of administration provides a way to deliver the drugs locally, thereby increasing their efficacy. However, there are sever…
Les latrines a fosse simple sont l’une des plus vieilles formes d’assainissement ameliore dans le monde, et pour beaucoup, elles restent la meilleure option. Les latrines a fosse simple peuvent etre facilement construites en utilisant des materiaux et technologies locales. Comparees aux autres formes d’assainissement,…
저작자표시-비영리 2.0 대한민국 이용자는 아래의 조건을 따르는 경우에 한하여 자유롭게 l 이 저작물을 복제, 배포, 전송, 전시, 공연 및 방송할 수 있습니다.l 이차적 저작물을 작성할 수 있습니다.다음과 같은 조건을 따라야 합니다: l 귀하는, 이 저작물의 재이용이나 배포의 경우, 이 저작물에 적용된 이용허락조건 을 명확하게 나타내어야 합니다.l 저작권자로부터
It is suggested that a lyophobic stabilised colloidal system is formed under conditions of oxidative polymerisation of aniline. The influence of the molecular weight of additions of poly(N-vinylpyrrolidone) on the rate of oxidative polymerisation of aniline is shown.
Condensation polymerization of p- Nitrophenol, 4,4ÂÂ-Methylenedianiline and Formaldehyde catalyzed by 2MHCl has been carried out. The resin compositionwas determined on the basis of elemental analysis. Solution viscositymeasurementwas carried out to ascertain the characteristic functions and constants.The number aver…
AnewCu (II) complexwith the bidentate ligand 4-amino-6-methoxypyrimidine (AMP), [Cu(AMP)(H2O)3]SO4, has been prepared and was characterized by single crystal X-ray diffraction, IR spectroscopy andmagneticmeasurements. It crystallizes in the chiral orthorhombic space group P212121. In the complex, theCu(II) cation is p…
Seven steel samples previously run by Glow Discharge Spectroscopy were now metallographically investigated by SEM. The aim of the investigation was to see if any features such as cracks, pores or n ...
Background In the petroleum industry for protection against corrosion inhibitors are widely used. Their selection is made on the basis of laboratory tests, during which the question of modeling the impact of the flow of corrosive environment on the surface to be protected arises. Aims and Objectives Estimate the shear…
21 - 25 September, 2014
In an effort to find alternative routes for the production of sintered parts, induction sintering has been considered a promising candidate because it incorporates short production times. This stud ...
열전지(Thermal battery)는 장시간 저장하였다가 필요 시에 즉각적으로 작동해야 하는 미사일과 어뢰 등과 같은 유도무기의 전원으로 주로 사용되고 있다. 열전지 양극재료로 사용되고 있는 FeS2는 에너지 밀도가 크고, 독성이 없으며 가격이 저렴하다는 장점이 있다. 그러나 기존에 사용 중인 FeS2 분말은 입경이 크기 때문에 고출력을 가지는 열전지에의 적용에는 한계가 있어 왔다. 본 연구에서는 열전지의 출력밀도를 높이기 위해 FeS2 분말을 고에너지 볼 밀링을 이용하여 분쇄시키는 방법이 사용 되었다. 기존에 사용 중인 FeS2 및 나노 FeS2 분말을 적용하여…
The stability of chloride ion selective electrodes in highly alkaline solutions is an important aspect when reliability and feasibility within reinforced concrete applications are concerned. The sensitivity of these electrodes largely depends on the properties of the AgCl layer, including uniformity, porosity, orienta…
Chapter 1. A brief history of the use of ionizing radiation for cancer therapy is presented, as the motivation for modern clinical investigations on alpha therapy and the use and development of bifunctional chelators in targeted medicine. Recent studies on targeted therapy with alpha-emitters, such as 223Ra and 227Th,…
Hydrogen gas is considered as the key "green" technology for its endless production-consumption procedure, known better as the "water-cycle". In this cycle, hydrogen is directly produced from water electrolysis and while forms water again, when combusted with oxygen, releasing energy. However, as the most lightweight…
On the base of the algorithm steps in time the problem is formulated for inelastic deformation of laminated beams-wall of Tymoshenko type of regular structure. The behavior of materials layers describes by nonlinear-hereditary Rabotnov's creep theory. The calculations are carried out for unsteady creep of double-beat…