Relationship between the Commuting Algebra of KG-Module and the Irreducibility of Module
本文主要证明当K是数域,G是有限群,V是KG—模时,V的换位代数D=HomKG(V,V) ≌K蕴含V不可约,即Schur引理的逆定理:进一步,V在复数域C上的标量扩张C(×)kV是不可约CG—模当且仅当D≌K.
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Comportamento estrutural sob altas pressões de materiais com expansão térmica anômala
Nesta tese foi investigado o comportamento sob altas pressões de compostos com estrutura poliedral aberta que apresentam expansão térmica anômala. A presença de vazios e a alta flexibilidade deste tipo de estrutura, quando submetidos a condições extremas, como altas pressões e temperaturas, podem apresentar uma série…
Modélisation du comportement thermo-mécanique cyclique des alliages à mémoire de forme
Colloque avec actes et comité de lecture. Internationale.
多變性二氧化鈦奈米結構的設計、製備與光、電應用
The potential application of TiO2 nanoparticles in most of the fields such as photocatalysis, sensors, solar cells, and memory devices are of great interest due to their unique properties. With the increasing demand in alternative energy sources, solar energy has been considered as one of the most promising renewable…
Reactive hot pressing of boehmite
The compaction behaviour of boehmite has been studied under isothermal conditions, with special emphasis devoted to hot pressing in the temperature range 300 to 600°C. The present work indicates that it is possible to produce a hard dense compact under certain conditions. However, the behaviour of the material during…
Bioterminaali hakkeen tuotantoketjussa
Opinnäytetyön toimeksiantaja on Pohjois-Karjalan ammattikorkeakoulu. Työ kuuluu Tekesin lähilämpöratkaisut matalaenergiarakentamisessa -hankkeeseen, joka kuuluu osana Kestävä yhdyskunta -ohjelmaa. Hankkeen tavoitteena on löytää ja kehittää aluerakentamisessa kustannustehokkaita rakentamiskonsepteja,liiketoimintamallej…
Mesoporous SiO2 thin films containing ZnO photoluminescent nanoparticles. Simultaneous SAXS / WAXS / Ellipsometry investigations
peer reviewed
Application of electrospun carbon nanofibres for batteries and supercapacitors
With the great demand for energy storage devices with much higher energy density, better power performance and longer cycle life, researchers are looking into nano-structured battery and supercapacitor electrodes due to the higher accessibility of ions to electrodes, improved specific capacitance, and reduced chance o…
Characteristics of p-Cu2S/n-Cu2O Junction Photo-Electrode with Connection to the Solar Energy Conversion Devices
p-Cu2S/n-Cu2O junction photo-electrode was fabricated on copper sheets by simple dipping processes to make photoelectrochemical cells and solid state photovoltaic cells. A photocurrent enhancement was found for the junction photoelectrode because of the efficient charge separation process operated at the junction comp…
High-Pressure Synthesis, Crystal Structure and Physical Properties of Gallium Oxonitride
This thesis is concerned with the synthesis and properties of the high-pressure, high-temperature (HP/HT) phase of gallium oxonitride, which has a spinel-type structure. Since this material is an analogue of γ-alon (spinel-aluminium oxonitride), which is known to be an important material with a wide range of applicati…
RESTORATION OF 19TH CENTURY RED ATTIRE FROM THE CHURCH OF THE ANNUNCIATION OF THE BLESSED VIRGIN MARY ON LOKRUM
U radu je opisan novi pristup analizi povijesnim tekstilijama. Ispitivanja su provedena na misnom predmetu velumu iz 19. st. Primijenjene su analiticke i spektrofotometrijske metode, a temeljno je bilo identificirati boju u cilju restauracije predmeta. Analitickim metodama je potvrđeno da je velum izrađen iz svile-osn…
包芯线技术在Cu-Cr-Zr合金熔铸中的应用
通过冲熔法和包芯线技术将Zr元素添加到熔液中,制备Cu-Cr-Zr合金,比较两种不同方法所得合金的Zr元素收得率,并分析Cu-Cr-Zr合金的铸态显微组织。结果表明,包芯线技术较冲熔法能显著提高Zr元素收得率,提高约32.54%,从而使得生产成本降低。Cu-Cr-Zr合金的铸态组织中主要存在3相,即基体Cu、富Cr相和富CuZr相,不存在富CrZr相,其中富Cr相呈纤维针状和颗粒状,主要分布在基体上,部分Cr与Zr形成三元共晶组织;富CuZr相呈不规则块状,主要分布在晶界上。
The within bale repeatability of standardized instruments for testing cotton fiber produced in Africa
Fiber length, fiber strength, micronaire, uniformity, reflectance and yellowness measured on standardized instrument for testing cotton (SITC) are often used on cotton bales produced in the world for trading purposes with full respect of agreed commercial tolerances in order to limit the frequency of claims. In Africa…
Development of a united-atom protein model coupled with a coarse-grained solvent model for biomolecular simulation
Protein modeling with molecular mechanics force fields plays an important role in computational biology. However, handling real systems with the current popular all-atom force fields is limited in both size and timescale due to the computationally demanding nature of these force fields. One of the solutions is to use…
Hetero-Structure Integration using an Atmospheric Plasma Treatment for Surface Preparation before its Interconnection
One of the open challenges, related to the heterogeneous devices stacking, is its surface preparation, in order to assure the optimal electrical connections, and finally achieve the high performance structures having the stacked chips and passive components. Several techniques, using dry or wet process, allow the surf…
Vliv tepelného zpracování na tvorbu okujové vrstvy
Tema prace je zaměřeno na studium vzniku okujove vrstvy na povrchu železa a předevsim na povrchu korozivzdorných oceli. Hlavni pozornost v teoreticke casti je věnovana mechanismu a kinetice vzniku okuji, složeni a vlastnostem okujove vrstvy, dale pak odstraňovani okuji z povrchu pomoci procesu mořeni (v kyselinach, ta…
Synthesis of carbon nanotube-tungsten oxide composite for carbon dioxide sensing application
For employing as sensing materials, multi-walled carbon nanotubes-tungsten oxide (MWCNT-WO₃) composites were synthesized by using acid precipitation method following by calcination under air atmospheres. The research procedure was divided into 3 steps including investigation of WO₃ synthesis, synthesis of MWCNT-WO₃ co…
Рентгеноструктурный анализ поверхности втулки при обработке объемным электромеханическим дорнованием
The paper outlines solid electromechanical burnishing of bronze bushings. The authors comment an X-ray-structural analysis of the processed busing surface made of the given bronze grade and determine the influence of burnishing modes on element structure formation.
磁性核/無機殼奈米複合材料的合成、檢測與應用
Multifunctional uniform nanoparticles (NPs) composed of a hollow manganese nanocrystal core and a mesoporous silica shell (H-MnO@mSiO2) functionalized by phosphorescent iridium complex (Ir), and polyethylene glycol (PEG) or folic acid (FA) on the outermost surface have been strategically designed and synthesized. Both…
Studie povlaků PVD a CVD a jejich aplikace v praxi
Bakalařska prace se zabýva studii povlaků PVD a CVD a jejich aplikaci v praxi. V uvodu seznamuje s historii povlakovani. Dale jsou uvedeny výhody a nevýhody jednotlivých metod, jejich charakteristiky a oblasti jejich použiti. Soucasti prace je i vlastni experiment, který srovnava metody povlakovani z hlediska trvanliv…