Materials Literature
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The results of lithological and analitical detailed study of glauconite pellets extracting from marine clay-rich siltstones and sanstones of the Cenomanian Melovatskaya formation of the South East Russian Plate are described in the article. The laboratory investigation of glauconite was conducted by methods of optical…
Import 26/06/2013
Dietary fiber is an essential nutrient that many Americans are generally lacking in their diets. Additionally, dietary fiber is helpful in lowering the risk of many diseases such as obesity, diabetes, and heart disease. The purpose of this project was to develop a breakfast muffin that has at least four grams of dieta…
Hladina transkriptu je v eukaryotických buňkach přisně regulovana takzvaným systemem kontroly kvality RNA. Tato disertacni prace se zaměřuje na dva důležite cleny tohoto kontrolniho mechanismu v Sacharomyces cerevisie – na Trf4/5-Air1/2-Mtr4 (TRAMP) polyadenylacni komplex a Nrd1–Nab3–Sen1 (Nrd1) komplex. Nrd1 komplex…
The objective of this study is to design, synthesize and characterize poly(DHP-alt-MA), poly(DHP-co-MA-co-VA) and polymer/organo-clay nanocomposites containing anhydride groups whose biological activities are well-known. \nIn accordance with these objectives, bentonite clay that provides us with host regions of nano-s…
The chemical bath deposition (CBD) method was used for preparation of ZnO and ZnO-SnO2 nanocomposite films. Characterizations were made on their structural, microstructural and optical properties by X-ray diffraction (XRD), scanning electron microscopy (SEM) and ultraviolet-visible (UV-VIS) spectroscopy. The photoelec…
En este trabajo se presenta un estudio sistematico de los procesos de difusion anionica y cationica en volumen y en diferentes fronteras de grano de alta simetria en el sistema YSZ (yttria stabilized zirconia). A tal fin, se ha utilizado la tecnica de Dinamica Molecular. Ademas, se han realizado calculos estaticos par…
The purpose of this work is the study of creep behavior for a phosphorus-doped oxygen-free copper-silver alloy at low temperatures. Experimental tests at different stress and temperature levels will be performed and analyzed in comparison with the equivalent failure tests for a pure ETP copper. The obtained creep curv…
National audience
The quenching and partitioning heat treatment process has been used in press hardening and welding processes of advanced high strength steels with the purpose to increase the phase transformation rate. Different quenching and partitioning temperatures and times were used in order to optimize microstructure and mechani…
Bio-based continuous fibers were processed by melt spinning of cellulose acetate butyrate (CAB) and cellulose nanowhiskers (CNW) as well as environmental friendly plasticizer, triethyl citrate (TEC ...
One of the most commonly used printing technique today is lithography. The printing plate, which is composed of printing (accept printing ink) and nonprinting (must not accept printing ink) areas is highly important factor for all printing processes. Selective ink adsorption on printing plates is usually achieved by g…
In this study, polyvinyl alcohol (PVA) nanofibers with ethyl vanillin as active compound were prepared using electrospinning technique. The final products of electrospinning process were in the form of films consist of nanofibers. PVNethyl vanillin nanofibers, having fibers diameters in the range 100-1700 nm, were suc…
三陸の水産加工業は地域水産資源をそのまま一次加工して出荷してきたが，東日本大震災からの復興には更なる高付加価値化が必要である。本特集では三陸のキチン系糖質資源の有効利用を紹介する。N-アセチルグルコサミン (NAG) は関節症痛軽減効果で知られ，甲殻 (カニ・エビ殻) から精製したα-キチンの塩酸分解等により製造される。我々はα-キチンの前処理 (メカノケミカル粉砕や水熱処理) により酵素分解率を向上させてきた。一方，スルメイカは三陸の地域資源であり，廃棄物である中骨にはβ-キチンが豊富に含まれている。イカ中骨は前処理しないと酵素分解されないが，イカ中骨から精製したβ-キチンは前処理なしで容易に酵素分解される。イカ中骨(前処理後)…
Carbon nanomaterials encompass the newly discovered allotropes of carbon with at least one of its spatial dimensions on the order of a few nanometers. The physical properties of these nanomaterials differ substantially from the bulk carbon allotropes such as graphite and diamond. Of these nanomaterials, single-walled…
The Newman superposition model has been used to investigate the substitution of Mn2+ for Ni2+ site in Nickel maleate tetrahydrate single crystals. The calculated values of the spin-Hamiltonian parameters b0 2, b2 2 and b0 4 at roomtemperature fit the experimental one taken fromthe literature for Mn2+ in NMTH, with ave…
Les microorganismes ont développé une résistance accrue aux antibiotiques. Les aminoacyl-ARNt synthétases (aaRS) bactériennes sont essentielles pour la biosynthèse des protéines, car elles permettent de jumeler les acides aminés à leurs ARNt complémentaires. L’inhibition des aminoacyl-ARNt synthétases, telle que la gl…
A theoretical model is proposed to determine the effects of Si substitution with Al on the oxygen diffusion in apatite-type lanthanum silicates based on density-functional theory (DFT) calculations for La10(SiO4)4(AlO4)2O2. Substitution changes the stable configuration for excess oxygen from the split interstitial to…
International audience
Tetraazamakrocyklicke ligandy s koordinujicimi funkcnimi skupinami tvoři stabilni komplexy s velkým množstvim kovových iontů a jejich vlastnosti (např. vysoka termodynamicka stabilita a kineticka inertnost) je předurcily k aplikaci v medicině. Je nezbytne pro vyhodnoceni potencialniho použiti těchto komplexů v biomedi…