Materials Literature
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Nonradiative decay of excitons is a competing process to Multi-Exciton Generation (MEG) in nanoparticles.Nonradiative decay of single excitons with sufficient energy to generate bi-excitons in Cd 20 Se 19 and Cd 83 Se 81 nanoparticles was studied using Tully's Molecular Dynamics with Quantum Transitions (MDQT) method…
Organic dyes are examined in photoelectrochemical systems wherein they engage in thermal (rather than photoexcited) electron donation into metal oxide semiconductors. These studies are intended to elucidate fundamental parameters of electron transfer in photoelectrochemical cells. Development of novel methods for the…
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Based on earlier studies of m-terphenyl-supported complexes, a m-terphenyl diphosphine framework bearing a central phenolate ring has been studied. This ligand framework imparts coordinative lability to stabilize metal centers of a variety of oxidn. states by shifting between arene/phenolate coordination. Metalation h…
본 연구에서는 NaCl/ $H_3PO_4$ 혼합수용액을 사용하여 라이오셀 섬유의 내염화 처리를 수행하고 이에 따른 열 안정성과 내산화성의 향상 효과를 고찰하였다. 라이오셀 섬유를 다양한 공정조건으로 내염화 처리한 후 열 안정성과 내산화성을 측정 및 분석하고 그에 따른 메커니즘을 제시하였다. 실험결과, 내염화 처리된 라이오셀 섬유의 적분 열분해 온도(integral procedural decomposition temperature, IPDT)와 한계산소지수(limited oxygen index, LOI)는 약 23, 30% 증가하였으며, 활성화 에너지(activati…
Formic acid, acting as both carbon and energy source, is a safe alternative to a carbon dioxide, hydrogen and dioxygen mix for studying the conversion of carbon through the Calvin–Benson–Bassham (CBB) cycle into value-added chemical compounds by non-photosynthetic microorganisms. In this work, organoautotrophic growth…
University of Minnesota Ph.D. dissertation. August 2014. Major: Physics. Advisor: Boris Shklovskii. 1 computer file (PDF); viii, 114 pages.
It is paper have the objective to establish the behaviour microstructure of an union welded dissimilar in an alloy HK 40 and the cast iron 24, which is carried out in team that you lend services in the industry of the nickel and that for the characteristics of the union, they arise in the same cracking problem. He was…
기록물 보존을 위한 탈산처리 완료 후 탈산제 성분인 MgO 입자가 기록물 표면에 미세 입자 형태로 남아있는 일명백화현상이 나타나고 있다. 이 MgO 미세입자에 의한 백화현상은 MgO 입자가 분산되어 종이의 섬유질에 흡착함으로써 탈산효과를 나타내야 하나, MgO 입자의 농도와 입자크기가 적합하지 않을 경우 분산이 잘 이루어지지 않아 종이표면에 과량 흡착됨으로써 흰색인 MgO 미세입자로 입혀지는 현상이다. 이는 작업환경의 저해를 가져오고 또한 탈산처리 시 작업자 건강에 대한 우려가 증대되고 있으나, 이에 대한 원인 규명 및 대책은 없는 상황이다. 따라서 백화현상의 원인…
A nano-crystlline diamond film is grown by the dc arcjet chemical vapor deposition method. The film is characterized by scanning electron microscopy, high-resolution transmission electron microscopy (HRTEM), x-ray diffraction (XRD) and Raman spectra, respectively. The nanocrystalline grains are averagely with 80 nm in…
Polycrystalline In2S3 thin films were grown on glass substrates by means of chemical spray pyrolysis, using indium chloride (InCl3) and thiourea (CS(NH2)2) as precursors. The deposits were performed under air atmosphere with substrates maintained at temperatures varying from 300 to 400°C. The optical and structural pr…
Euglena gracilis is a secondary green alga related to trypanosomes that derives from a secondary endosymbiosis between a phagotrophic ancestor and a prasinophycean green alga. Our general objective is to study the metabolic interactions established between the secondary plastid and the mitochondrion after the endosymb…
Junhao Lin, Ovidiu Cretu, Wu Zhou, Kazu Suenaga, Dhiraj Prasai, Kirill I Bolotin, Nguyen Thanh Cuong, Minoru Otani, Susumu Okada, Andrew R Lupini, Juan-Car
This plan covers test BFY14CCIM-C which will be a first–of–its-kind demonstration for the complete non-radioactive surrogate production of multi-phase ceramic (SYNROC) High Level Waste Forms (HLW) using Cold Crucible Induction Melting (CCIM) Technology. The test will occur in the Idaho National Laboratory’s (INL) CCIM…
Donor substituted group 14 anions introduce unique reactivity and electronic properties of the corresponding metal complex. Zwitterionic metal complexes are rare species where the anionic center is rigidly locked and charge-separated by the internal bridges. The lone pair of electrons on the anionic center provides ad…
The purpose of this report is to evaluate the repeatability of the three most significant measurement techniques for duct leakage using data from the literature and recently obtained field data. We will also briefly discuss the first two factors. The main question to be answered by this study is to determine if differ…
With the recent increase in natural gas production, the demand for college educated petroleum engineers has increased. A greater number of high school graduates are now applying to petroleum engineering degree programs, however, the admission requirements to petroleum engineering schools are becoming increasingly stri…
This is my thesis research on the preparation of borylazadipyrromethene (azaBODIPY) dyes bearing an anchoring group, such as a carboxylic acid group, at the β-pyrrolic position of the azadipyrromethene scaffold. Carboxylate groups form covalent bonds to oxide semiconductors such as TiO2 (n-type) or Cu2O (p-type) in dy…
Bulk (RE)BCO materials can be used potentially as powerful permanent magnets in various engineering applications such as rotating machines and magnetic bearings where their large flux density / volume ratio makes them more efficient than traditional ferromagnetic permanent magnets. However, the magnetic flux distribut…
The synthesis and reactivity of cobalt oxo cluster complexes will be presented. Using a hexapyridyl-trialkoxide ligand, a trinuclear Co complex was used as a platform for the prepn. of tetrametallic oxido cluster complexes [MCo_3O]^n+ where M = Li^+, Zn^2+, Co^2+. Reactivity of such complexes toward oxygen atom transf…