Materials Literature
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Summary The plant Kigelia africana (Lam.) Benth. is used in traditional medical practices of Africa and India to treat hepatic diseases. The present study is designed to evaluate the effect of K. africana fruit extract (KAFE) on lipid profiles in Triton X-100 induced hyperlipidemia in male wistar rats. The aqueous and…
Nanotechnology is a multidisciplinary field and has achieved breakthroughs in bioengineering, molecular biology, diagnostics, and therapeutics. Targeted delivery of therapeutic agents has the potential to localize drugs to a specific tissue as a mechanism to enhance treatment efficacy and abrogate side effects. The su…
New metal complexes of the ligand 2 -thioaceticacid-5-Pyridyl-1,3,4-oxadiazole ( HL) with the metal ions Ni (II) Cu(II) Co (II) and Fe ( III) were prepared in al coholic medium, the prepared complexes were characterized by FTIR spectroscopy, electronic spectroscopy, elemental analysis, magnetic susceptibility, conduct…
Measuring the secondary electron yield (SEY) on technical surfaces in accelerator vacuum systems provides essential information for the study of electron cloud growth and suppression, with application to many accelerator R&D projects. As a part of the CesrTA research program, we developed and deployed an in-situ SEY m…
Aim: To clone the gene of Xylose isomerase (XyI) from thermophilic Geobacillus caldoxylosilyticus TK4 strain and to express and characterize this enzyme. Methods: XyI gene of Geobacillus caldoxylolyticus was cloned into pET28a(+) vector and expressed in Escherichia coli. The recombinant protein was purified by using n…
Open-cellular elastomeric nanocomposite foams were obtained by polymerization of water-in-oil high internal phase emulsions (HIPEs) containing 2ethylhexylacrylate, styrene, divinylbenzene, and organo-modified montmorillonite (org-MMT)s. The effects of various org-MMT contents on the emulsion viscosity and microcellula…
Nanomaterials are at the leading edge of the rapidly developing field of nanotechnology. The development of reliable experimental protocols for the synthesis of nanomaterials over a range of chemical compositions, sizes, and high monodispersity is one of the challenging issues in current nanotechnology. In the context…
The key points of deformation mode calculation at pipe cold pilger rolling are considered taking into account metal speed-torque characteristics. Relations for calculation of accepted diameter and gauge reduction values at austenitic and ferritic steel pipe rolling are defined.
The effect of moisture content and loading orientation on some mechanical properties of conophor nut relevant in the development of its cracking machine was determined using a Testometric Universal Testing Machine (UTM). In the moisture range of 14.9% - 50.3% d.b. under both lateral and longitudinal loading orientatio…
A high resolution system designed for easy and inexpensive profile of an incident beam on a charged target, in the ion implanter installed at the Ion Beam Laboratory of the Technological Nuclear Institute (ITN) in Lisbon, Portugal, is described. This system intended to be used offline and not during the implantation,…
For the wider interested applications of polymer hybridized metal nanoparticles composites, poly vinyl-alcohol /silver nanoparticles composites in a form of a film was prepared by in situ irradiation doping technique up to 50 kGy. The effect of radiation upon the composites resulted in reducing the silver ions into bl…
• Although lacking active microbicidal activity, microfibre fabrics have unique properties that significantly increase their ability to remove organic debris (e.g., dust, bacteria, spores) and have the potential to be more efficient and economical than conventional cotton fabrics. • Silver has been demonstrated to sho…
3 Abstract: In this study, based on topographic maps, satellite images and conducted several field visits, ten pedons studied in the area and for further study four representative pedons selected which occurring on two different landscapes (piedmont plain and hill). Occurrence of gypsum in studied soils related to wea…
poly(vinyl alcohol); hydrotalcite; nanofibres; electrospinning; composite. (*) To whom correspondence to be addressed.
In this paper we first prove a theorem on the nonexistence of pyramidal polynomial basis functions. Then we present a new symmetric composite pyramidal finite element which yields a better convergence than the nonsymmetric one. It has fourteen degrees of freedom and its basis functions are incomplete piecewise triquad…
The VITROX ® isocyanate-based resin system is a novel development that provides a unique combination of high thermal stability and toughness in a resin system that is easy to process and to cure. The mixed resin system exhibits a low viscosity, which at the end of a tunable induction period of up to several hours at r…
Melting and non-isothermal crystallization behaviors, oxidative induction time, and fire performance of the injectionmolded wood flour-high density polyethylene (HDPE) composites (WPCs) incorporated with different levels (4, 8, or 12 wt %) of boron compounds [borax/boric acid (BX/BA) (0.5:0.5 wt %), zinc borate (ZB)]…
Generation of the corona discharge between a sharp electrode and a grounded heated surface usually induces an ionic wind, whose momentum can be used for enhancement of heat transfer. The previous studies are mainly d evoted to exploitation of the normal veloci- ty component, resulting from the direct ionic wind moment…
Inflat electronstoragerings, onlytheverticalcomponent of the beam polarization is preserved. During acceleration, the crossing of several depolarizing resonances may cause severe beam depolarization. Even in case of fast ramping speeds of upto 4 GeV/s, first ordereffects like imperfection and intrinsic resonances have…
CAMELIA CERBU1*, IOAN CURTU1, DAN MIHAI CONSTANTINESCU2, MATEI CONSTANTIN MIRON2 1„Transilvania” University of Braoov, Faculty of Mechanical Engineering, Department of Automotives and Mechanical Engineering, 29 Eroilor Av., 500036, Braoov, Romania, 2 Politechnic University of Bucharest, Faculty of Engineering and Tech…