Advances in Corrosion Repair of Piles Using FRP
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SLIDING MODE STRATEGY FOR CLOSED LOOP CONTROLLED TWO-LEVEL PWM INVERTER
Lucrarea isi propune sa determine o noua strategie pentru comanda in bucla inchisa a invertorului PWM cu doua nivele, cuplat la un filtru LC trece jos. Soluţia prezentata simplifica metoda sliding mode clasica luând in consideraţie condiţiile specifice de funcţionare a circuitului. Criteriile de stabilitate si converg…
Heat capacity and thermal conductivity of Fe x Mn1 − x S single crystals
This paper reports on the results of investigations of the thermal properties and thermal conductivity of single crystals of homogeneous solid solutions Fe x Mn1 − x S with a cubic NaCl structure, which have been prepared by the cation substitution for divalent manganese ions in manganese monosulfide. It has been reve…
Preparation and Osteogenesis Activities of Electroactive Biodegradable Nanocomposites PAP/op-HA/PLGA
The electroactive biodegradable nanocomposites PAP/op-HA/PLGA were prepared by blending a triblock copolymer PLA-b-AP-b-PLA( PAP) of polylactide( PEA) and aniline pentamer(AP) with oligomeric lactic acid-surface grafted hydroxyapatite(op-HA)/poly(lactide-co-glycolide) (MA). The electrochemical properties and conductiv…
Interfacial structure of V(2)AlC thin films deposited on (11(2)over-bar0)-sapphire
Local epitaxy between V(2)AlC and sapphire without intentionally or spontaneously formed seed layers was observed by transmission electron microscopy. Our ab initio calculations suggest that the most stable interfacial structure is characterized by the stacking sequence...C-V-Al-V//O-Al..., exhibiting the largest work…
The metal grating coupling of long-wavelength quantum well infrared photodetectors: surface plasmon effect
The distribution of electromagnetic field of 2D metal grating in the Long-Wavelength Quantum Well Infrared Photodetectors(LW-QWIPs) was studied by Finite Time Domain Method(FDTD).The result shows that making good use of the surface plasmons can remarkably improve the optical coupling efficiency in the LW-QWIPs.It also…
Mediated enzyme electrodes
This review summarizes the long time experience of the team at the Electrochemistry of Biocatalysts and Metal-Air Systems Department in the field of the mediated enzyme electrodes. Investigated is the redox behaviour of a mediated enzyme electrode depending on the kind of carbon materials, needed to produce the electr…
NUTRITION RESEARCH ON SILKWORMS BOMBYX MORI L.
Fresh mulberry leaves can be difficult to come by at times, therefore many substitutes, preservation methods and additives have been tested in order to accomplish several goals: to extend the time of year when Bombyx mori larvae can be grown, to increase the weight of the chrysalis and its nutritional value for human…
Temperature dependence of the energy gaps in semi-conductors
Supervisor; Professor Robert Barrie The question to what extent the poles of the temperature dependent Green's functions have physical significance as temperature dependent energy levels Is considered. Our contention is that such levels should not be thought of in terms of internal energy or free energy. They have no…
29Si NMR and UV−Raman Investigation of Initial Oligomerization Reaction Pathways in Acid-Catalyzed Silica Sol−Gel Chemistry
29Si NMR and UV8722;Raman Investigation of Initial Oligomerization Reaction Pathways in Acid-Catalyzed Silica Sol8722;Gel Chemistry
Thermal expansivity at high temperatures for ionic solids
New expression for temperature dependence of thermal expansivity has been derived in high temperature region. Newly developed relationship is based on the linear relationship between thermal expansivity and isothermal bulk modulus at temperatures higher than the Debye temperature. Developed expression is used to estim…
On Fire Safety of Thin-Walled P/C Beams Subjected To Cracking and Corrosion
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Evolution des contraintes résiduelles dans la couche de diffusion d’un acier modèle Fe-Cr-C nitruré
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Functionally electrospun PLA/tubular clay nanocomposites for the potential application of drug delivery
The electrospinning technique provides a simple but innovative approach to produce the non-woven fabrics consisting of fibrous structures on the order of usually 50-500 nanometres with quite large surface areas.Such electrospun nanofibres could be potentially used as multifunctional materials for a variety of applicat…
Amphiphilic Cationic [Dendritic poly(L-lysine)]-block-poly(L-lactide)-block-[dendritic poly(L-lysine)]s in Aqueous Solution: Self-Aggregation and Interaction with DNA as Gene Delivery Carriers
A new series of triblock [dendritic poly(L-lysine)]-block-PLLA-block-[dendritic poly(L-lysine)]s(DL2-PLLA-DL2) with PLLA block lengths of 11.5-26.5 and double 2-generation PLL dendrons DL2 as model cationic amphiphiles were synthesized and characterized. Their CAC, self-aggregation and plasmid DNA binding affinities i…
Micro-Raman and UV-VIS Studies of 100 MeV Ni4+ Irradiated Cadmium Telluride Thin Films
CdTe thin films grown by thermal evaporation on quartz substrates were irradiated with Swift (100 MeV) Ni 4 + ions for fluences in the range 1.0 × 1011 - 1.0 × 1013 cm – 2. The modification in the structure and optical properties has been studied as a function of ion fluence using Micro-Raman spectroscopy and UV-VIS s…
CHAIN EXTENSION OF MALEIC ANHYDRIDE END-CAPPED POLY(1,2-CYCLOHEXYLENE CARBONATE) BY BISOXAZOLINES
Poly(1,2-cyclohexylene carbonate) (PCHC) was prepared by copolymerization of carbon dioxide and cyclohexene oxide with Y(CCl(3)OO)(3)-ZnEt(2)-glycerin rare earth metal coordination ternary catalyst. The result polymer showed number average molecular weight (M(n)) of 56.3 x 10(3) with polydispersity index of 4.9. Thoug…
Effect of Size Reduction Parameters in Pharmaceutical Manufacturing Process
Within pharmaceutical manufacturing, size reduction is one of the most extensively used and vital unit operations. Size reduction in tablet production is achieved primarily through milling procedures, which allows for attaining product uniformity, optimizing product solubility, and improving bioavailability. Additiona…
DNA-Modified Single Crystal and Nanoporous Silicon
The functionalization of silicon as elemental crystalline wafer, nanoporous layers, or nanocrystalline particles with DNA oligonucleotides using automated solid phase synthesis is described. The procedures provide semiconductor surfaces covalently modified with oligomers suitable for capturing complementary oligonucle…
In-situ synthesis and normal chromatographic properties of nonporous SiO2/ZrO2 core-shell composite microspheres
Sub-2 μm core-shell SiO2/ZrO2 composite microspheres with nonporous SiO2 as the cores and ZrO2 nanoparticles as the shells were synthesized by sol-gel method in the current work. The fabrication consisted of (1) preparing monodisperse silica spheres; (2) coating the spheres with zirconia nanoparticles in-situ; and (3)…