Materials Literature
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Les propriétés intrinsèques, photophysiques, électrochimiques et cristallographiques des molécules fluorescentes 4,4'-bis(2-benzoxazolyle)stilbène (BBS) et 2,5-bis(5-tert-butyl-2-benzoxazolyle)thiophène (BBT) ont été étudiées en solution et dans les polymères semi-cristallins : poly(butylène succinate) (PBS) et polyla…
Στη διατριβή αυτή μελετούμε με την βοήθεια DFT υπολογισμών την αντίδραση πρωτονίωσης του μη γεφυρωμένου τετραπλού δεσμού μετάλλου – μετάλλου του ανιόντος [Mo2Cl8]4- προς το σχηματισμό τριπλού δεσμού μετάλλου-μετάλλου στο τριπλά γεφυρωμένο υδρίδιο του [Mo2(μ-H)(μ-Cl)2Cl6]3-. Τα αντιδρώντα, προϊόντα, ενδιάμεσα και οι με…
Present investigation deals with the wear behaviour of conventional cast Mg–5%Sn and Mg–5%Sn–2%Mm (Mm is misch metal) (wt.%) alloys studied through pin-on-disc wear experiments at four different loading conditions under ambient temperature. This study reports the effects of external applied load on the dry sliding wea…
Corrosion can lead to the premature deterioration and failure of transportation structures. In pre-stressed bridge structures corrosion is more severe, leading to sudden failures when cracking is induced at pitting sites by tensile or compressive stresses. This work studies the viability and effectiveness of inorganic…
This study presents a novel, low-cost, all-inorganic lead selenide-titania (PbSe/TiO2) nanowire heterostructure material synthesis for photovoltaic applications. PbSe nanorods (NRs) have been coelectrospun within a TiO2 nanotube with high connectivity for highly efficient charge carrier flow and electron-hole pair sep…
Levulinic acid is a sugar-derived building block that can be produced from biomass feedstock as an alternative to the petrochemical resources. The purpose of this study was to investigate the performance of HY zeolite supported chromium catalysts in producing levulinic acid from glucose, cellulose and lignocellulosic…
Nach im Jahr 2009 abgeschlossenen Untersuchungen im Auftrag der Bundesanstalt fuer Strassenwesen (BASt), werden auch bei Anwendung der Feuchtsalzstreuung FS 30 erhebliche Anteile des Streustoffes (bis zu 85 %) durch den Fahrverkehr von der Fahrbahn verfrachtet, bevor sie zur Wirkung kommen. Diese Untersuchungen fuehrt…
The effect of (3-aminopropyl)trimethoxysilane (APTMS) and (3-aminopropyl)triethoxysilane (APTES) on composite based poly(lactic acid)(PLA)/poly(butylene adipate-co-terephthalate) (PBAT) blends reinforced kenaf fiber has been prepared by using melt blending technique. Composites were blended for 15 minutes at 170°C unt…
Η παρούσα διατριβή πραγματεύεται την σύνθεση και μελέτη ιδιοτήτων γαλακτωμάτων του τριπολυμερούς μεθακρυλικού μεθυλεστέρα \ ακρυλικού βουτυλεστέρα \ βινυλεστέρα του βερσατικού οξέος-10 (ΜΜΑ\ΒΑ\ veova-10) για την παραγωγή οικολογικών επιχρισμάτων. Για την επίτευξη του στόχου κινηθήκαμε σε δύο κατευθύνσεις: πρώτη κατεύθ…
Surface engineered systems for industrial applications must be able to withstand the harsh inservice environments that they will be operated under. Localised testing on the nanoscale is a method commonly used to probe such systems at very high temperatures, varying humidity and even under liquid environments. However…
Protein kinases are important mediators of cell signalling that are often implicated in disease when deregulation occurs. The catalytic kinase domain is highly conserved with 518 identified members in the super family. Kinase structural studies are mainly based on relatively static crystal structures. However protein…
We have analyzed a resonant behavior in the dielectric constant associated to the barrier of YBa2Cu3O7 (YBCO) grain boundary Josephson junctions (GBJJs) fabricated on a wide variety of bicrystalline substrates: 12° [0 0 1] tilt asymmetric, 24° [0 0 1] tilt asymmetric, 24° [0 0 1] tilt symmetric, 24° [1 0 0] tilt asymm…
Τα τελομερή αποτελούν ιδιαίτερες νουκλεοπρωτεϊνικές δομές στα άκρα των ευθύγραμμων χρωμοσωμάτων τα οποία μειώνονται σε μήκος μετά από κάθε κυτταρική διαίρεση. Μετά από ορισμένο αριθμό διαιρέσεων, τα τελομερή βρίσκονται πλέον σε κρίσιμα μικρό μήκος και ως αποτέλεσμα προκαλείται γενετική αστάθεια η οποία έχει ως επακόλο…
nnn Organic photovoltaics (OPV) is an emergent renewable technology that could enable humanity to cleanly generate abundant amounts of electricity from the Sun. Whilst promising many potential advantages such as reduced manufacturing costs, current OPVs suffer from drawbacks of relatively low efficiencies and poor dev…
Cellulose gels were synthesized in which the pore space was filled with resorcinol-formaldehyde (RF) aerogel solution. Three weight percent microcrystalline cellulose was dissolved in an aqueous calcium thiocyanate melt at 110 °C, which gelled on cooling building a nanofibrillar felt structure. The highly concentrated…
ABSTRACT Considering the new and anticipated developments in packaging and assembly, this two-part webinar addresses "how-to" prevent failures and take remedial measures of the prevailing production defects through the understanding of potential causes. The webinar focuses on six issues/defects - PCB bare board issues…
Günümüzde tekstil terbiyesinde önem kazanmaya başlamış olan kavramlardan biri nano-teknolojidir. Tekstil terbiyesinde nano-teknolojik ürünler kullanılarak konvansiyonel yöntemlere kıyasla birçok avantajlar sağlanabilmektedir. Bu anlamda henüz tekstil terbiyesinde kullanımı oldukça yeni olan bir nano-teknolojik ürün de…
Genus Periosocypris n. gen
By the beginning of 2013, Japan is relying on just two nuclear reactors to fulfill the nation's enormous demand for electricity. There is a strong push to re-start the remaining reactors from Keidanren, the leading business association, and from the electric power companies, while the New Abe administration has alread…
Japan's leading business journal Toyo Keizai has published an article by Hokkaido Cancer Center director Nishio Masamichi, a radiation treatment specialist. The piece, entitled “The Problem of Radiation Exposure Countermeasures for the Fukushima Nuclear Accident: Concerns for the Present Situation”, was published on J…