Materials Literature
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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…
A concept for large-area high-rate VHF-PECVD (60 MHz) of a-Si:H and μc-Si:H on moving substrates is developed and evaluated. Up to 40x40 cm² substrates can be used. The deposition plasma is sustained between linear electrodes and a moving substrate. Due to the gas flow geometry and the high degree of source gas deplet…
Solarenergie wird schon heute in der Stromerzeugung eingesetzt, um fossile Ressourcen zu schonen und die Emission von Treibhausgasen zu vermeiden. Die gleichen Ziele verfolgt die solare Erzeugung von chemischen Produkten. Die Möglichkeit der Lagerung solcher Produkte erlaubt es, die Fluktuationen der Solareinstrahlung…
Opinnäytetyössä on tutkittu ostoenergian, kuten kevyen polttoöljyn ja sähkön korvaamista maatilalla tuotetulla omalla energialla vuosien 2010-2025 välisenä aikana. Esimerkkinä on käytetty Pohjois-Pohjanmaalla sijaitsevaa lihakarjan kasvatukseen erikoistunutta maatilaa. Tarkastelussa on otettu huomioon maatilarakennust…
本論文研究製備二氧化鈦(TiO2)或氧化鋅(ZnO)作為量子點敏化太陽能電池(QDSSC)光電極中半導體奈米結構層之應用，並探討藉由改良光電極增進元件效率之方法與其原因。 本研究第一部分(第二章)是以一定比例參雜單分散聚苯乙烯(PS)乳膠圓球粒子(約300 nm)於二氧化鈦薄膜之中，經過高溫燒結得到含有微奈米複合孔隙，團簇結構的二氧化鈦薄膜(M-TiO2)。之後利用液相之連續離子層吸附反應(SILAR)，將硫化鎘量子點合成並吸附沉積於此改良結構中(M-TiO2/CdS)，並與未經PS球修飾但經同樣製程製備之二氧化鈦薄膜(B-TiO2/CdS)做比較。在本研究探討沉積次數對元件效能之影響中，我們發現若使用B-TiO2結構之薄膜吸附量…
研究了激发剂对氟石膏的激发效果和机理，复合氟石膏胶结材的强度、软化系数和浸出毒性。通过NaOH、Na2SO4和NaF对氟石膏激发试验，确定最优掺量均为1％。在此基础上，采用矿渣、粉煤灰、熟料对用量80％以上氟石膏进一步改性，发现Na2SO41％、矿渣2．5％、粉煤灰5％和氟石膏89％复合胶结材性能最好，28d抗压强度可达12．25MPa，软化系数可达0．70，浸出氟离子浓度降低到0．7485mg／L。SEM和XRD分析发现水化形成的二水石膏晶体与少量水化硅酸钙、钙矾石及氟化钙互相填充包裹，阻碍了水分进入，改善了复合胶结材耐水性能和降低了浸出毒性。
Studies were conducted to standardize optimum pH and temperature for three locally isolated bioplastic producing microorganisms. The pH 7 was found to be better for all strains including the reference culture, Ralstonia eutropha. The optimum temperature was 30°C.
Les couplages thermomécaniques sont étudiés depuis plusieurs années en estimant les sources de chaleur à partir de mesures de champs de températures obtenus par imagerie InfraRouge. Ces estimations sont basées sur l'approximation des dérivées temporelle et spatiales impliquées dans l'équation de la chaleur. Les travau…
This research addresses the potential ecotoxicity of two emerging carbonaceous materials: C 60 and biochar. The use of these materials is rapidly increasing, as well as their potential for widespread applications. Thus, information about unintended consequences associated the widespread use, incidental or accidental r…
From the structural point of view, cellular structures have properties that are much superior compared to the properties of the material that they are made of, including high strength to weight ratio and energy absorption. One of the key applications of the cellular structures is the design of structural components wi…
This thesis report is submitted in partial fulfillment of the requirement for the degree of Masters of Science in Biotechnology, 2011
The life and the performance of an insert in metal cutting are mainly dependent on the\nheat that is generated in the contact zone on the tool rake and on the flank face with the\ntransient and machined surfaces. According to tool life standard the wear on the flank\nface is usually taken as a decision for tool life.…
Colloque avec actes et comité de lecture. Internationale.
Eeþ÷aâua neiâa: aaniðaoey; eciianeyiue aeuaaaea; eciianeyiay eeneioa; eiaeaeoið eiððicee; aeeaeioaciia ieeneaiea; iaðiaaciâay nianu; iieeiðiieeaiiieeaieiu. In the present work results of researches on purification of exhaust gases of manufacture of isobutyric acid polipropilenpoliamines. Derived from polyamines and is…
An investigation of creep deformation in pure zirconia, using a creep-in-bending method with programmed temperature increase, showed the occurrence of superplasticity at temperatures near the monoclinic to tetragonal phase transformation. An interesting phenomenon was observed in a temporary halt to the creep process…
There are presented researchs results of regulation powder of nitrocellulose combustions capabilities by means of use complex organo-metallic compounds of hetero nuclear structure as combustion catalyst. There are demonstrated (shown) that complex organo-metallics like phthalate of copper and plumb, phthalate of nicke…
La présente étude a pour but d’identifier l’impact de différents traitements de steam explosion sur les propriétés de dégradation thermique des fibres de cellulose. Dans un premier temps, les intensités des traitements appliqués ont été définies sur base d’un facteur de sévérité (SF), établi par une corrélation entre…
Cette étude est inspirée d’un retour d’expérience des pompes d’injection d’eau de mer et de brut de pétrole pour les opérations d’une plateforme de production pétrolière. Dans ces machines tournantes, la fatigue et la corrosion sont les causes essentielles de détérioration des pièces mécaniques. Le souci permanent con…
tecidos de fibras de vidro (FV) atravs de um processo de deposio manual, sendo tambm utilizados NTC dispersos diretamente na resina.
The amount of soluble collagen secreted in the media at day 25 in the IL-13 pre-treated NHBE at 1 and 10 ng/ml co-cultured with NHLF is augmented as compared to the untreated NHBE co-culture; * p < 0.01 and addition of TGFβneutralizing antibody (10 μg/ml) abolishes this increase (p < 0.01 compared to respective condit…