Materials Literature
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An efficient synthesis of 1,3-benzodioxoles was achieved from catechol with different aldehydes and ketones using Cu(II) impregnated sulfated MCM-41 as an efficient and reusable catalyst.
The synthesis of well-defined poly(styrene-b-isobutylene-b-styrene) (SIBS) triblock copolymers was accomplished by cationic sequential block copolymerization of isobutylene (IB) with styrene (St) using 1,4-di(2-chloro-2-propyl)benzene (DCC)/TiCl4 /2,6-di-tert-butylpyridine(DtBP) as an initiating system in methyl chlor…
We describe a random bond network with fluctuating mechanical constraints for which structural and dynamical length scales are explicitly defined and can be compared with the observable properties of the system. The constraints give well-defined individual structures, describing rigid clusters of particles, and there…
A stable free radical (2,2,6,6-tertamethylpiperidinyl-1-oxy, TEMPO) polymerization technique was applied to graft polymerization of styrene (St) onto palygorskite (PT) surface. The introduction of peroxide groups onto the PT surface was achieved by the reaction of hydrogen peroxide with chlorosilyl groups, which were…
Coulomb effects in intrabeam scattering are taken into account in a way providing a correct description of the spin-dependent contribution to a beam loss rate. It allows one to calculate this rate for polarized ${e}^{\ifmmode\pm\else\textpm\fi{}}$ beams at arbitrarily small values of $\ensuremath{\delta}\ensuremath{\e…
In this article, a distribution transformer is analyzed under unbalanced voltage and unbalanced load. The transformer is modeled using the time-stepping finite element method, considering all geometrical and physical characteristics. To analyze precisely the occurrence of unbalanced voltage and load in transformer, sp…
The crystallization behavior and microstructural change of the glass-ceramics were analyzed as a function of concentration and etching time of the HF solution in order to enhance the degree of crystallinity induced by heterogeneous nucleation of glass of bottom ash containing 15 wt% Li 2 O.The nucleation site seemed t…
Silicon carbide (SiC) has recently drawn an enormous industrial interest because of its useful mechanical properties such as thermal resistance, abrasion resistance and thermal conductivity at high temperature. RF Thermal plasma (PL-35 Induction Plasma, Tekna CO., Canada) has been utilized for synthesis of high purity…
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionEffects of the Arctic (E22→G) Mutation on Amyloid β-Protein Folding: Discrete Molecular Dynamics StudyA. R. Lam*, D. B. Teplow, H. E. Stanley, and B. UrbancCite this: J. Am. Chem. Soc. 2011, 133, 8, 2789Publication Date…
This special issue of Nanoscale Research Letters contains scientific contributions presented at the Symposium D "Multidimensional Electrical and Chemical Characterization at the Nanometer-scale of Organic and Inorganic Semiconductors" of the E-MRS Fall Meeting 2010, which was held in Warsaw, Poland from 13th to 17th S…
We describe the optical properties of gold island films embedded between SiO2 and/or TiO2 layers. Plasmonic properties of gold films have been characterized using spectrometry and variable angle spectroscopic ellipsometry for various combinations of the embedding media. The obtained refractive indices of embedded gold…
A 2(III)(7-3) fractional factorial experimental design was used to establish 16 culture media, with and without PCBs to enhance the activities of laccase (Lac), manganese peroxidase (MnP), and versatile peroxidase (VP) produced by the white rot fungus Pleurotus ostreatus. The culture was added to 10,000 mg L(-1) of tr…
A multiscale model for tumor growth and its chemotherapy using conjugate nanoparticles is presented, and the corresponding therapeutic outcomes are evaluated. It is found that doxorubicin assembled into chimeric polypeptide nanoparticles cannot eradicate either vascularized primary tumors or avascular micrometastasis…
A new monotypic genus, Afrophilodana africana n. gen, n. sp. (Trigynaspida: Parantennuloidea: Philodanidae) is described from two females found in soil samples from Kenya. The family Philodanidae Kethley, 1977 is redefined and the affinities of the new genus discussed. The leg chaetotaxy is also provided and compared…
Mullite fibres were prepared using aluminium carboxylates (ACs) and tetraethylorthosilicate by sol–gel process. ACs were synthesised from dissolution aluminium in a mixture of formic acid and glacial acetic acid using aluminium chloride hexahydrate as catalyst. The optimum condition for obtaining ACs is as follows: th…
Ce(IV)-loaded modified NaY (NH4Y) zeolite was prepared for selective adsorptive desulfurization from fluid catalytic cracked (FCC) gasoline. Ce(β)Y was obtained from NH4Y using a liquid-phase ion-exchange method. Ce(IV)Y was obtained from calcining Ce(β)Y at 550°C. The structures of the Ce(IV)Y and NaY samples, select…
Macroscopic quantum phenomena are common features observed in superconductors, superfluid helium, and Bose-Einstein condensates. However, most of quantum transport studies are based on a small number of dots and are not in long-range electron transport length scale. Here we show that spin-dependent resonant quantum tu…
본 연구에서는 폴리프로필렌(PP)/다중벽 탄소나노튜브(MWCNT)복합체를 이축압출기를 사용하여 펠렛형 MWCNT를 20 wt%까지 함량별로 제조하고, MWCNT가 20 wt% 첨가된 복합체를 마스터배치(M/B)로 사용하여 함량별로 다시 PP와 컴파운딩하여 희석하였다. PP/MWCNT 복합체는 함량 변화에 따라 전기전도도, 열전도도, 모폴로지, 열적, 고체 점탄성, 기계적 성질을 조사하였고, 또한 희석된 PP/MWCNT 복합체와 1단계 PP/MWCNT 복 합체간의 물성을 비교하였다. 전기전도도와 열전도도는 MWCNT의 함량이 3 wt% 일 때 percolation t…
The MCSCF approach with the geometry optimization is applied to the calculation of electronic properties of active site of heme trHbN including (ONOO) functional group and two water molecules. The localized molecular orbitals are employed as a starting set. Two subspaces of full interaction (CAS) have been used by the…
Laminated polytetrafluoroethylene (PTFE) films, which are made of compact and porous PTFE layers, are prepared through the process of sintering. The corona charging technique is utilized to make the laminated PTFE films piezoelectric, thus transforming them into piezoelectrets. The crystallinity, Young's modulus in co…