Results 21 to 30 of about 9,853,288 (268)

Synthesis, Characterization, Antioxidant, and Antibacterial Studies of Some Metal(II) Complexes of Tetradentate Schiff Base Ligand: (4E)-4-[(2-{(E)-[1-(2,4-Dihydroxyphenyl)ethylidene]amino}ethyl)imino]pentan-2-one

open access: yesBioinorganic Chemistry and Applications, 2015
Co(II), Ni(II), Cu(II), and Zn(II) complexes of (4E)-4-[(2-{(E)-[1-(2,4-dihydroxyphenyl)ethylidene]amino}ethyl)imino]pentan-2-one have been synthesized and characterized by elemental analyses, molar conductance, electronic and IR spectral studies, and ...
I. Ejidike, P. A. Ajibade
semanticscholar   +1 more source

Quantum key distribution in the Holevo limit [PDF]

open access: yes, 2000
A theorem by Shannon and the Holevo theorem impose that the efficiency of any protocol for quantum key distribution, $\cal E$, defined as the number of secret (i.e., allowing eavesdropping detection) bits per transmitted bit plus qubit, is ${\cal E} \le ...
Cabello, Adan
core   +2 more sources

Ash pollen allergy: reliable detection of sensitization on the basis of IgE to Ole e 1

open access: yesAllergo Journal International, 2014
SummaryBackground: Alongside hazel, alder and birch pollen allergies, ash pollen allergy is a relevant cause of hay fever during spring in the European region. For some considerable time, ash pollen allergy was not routinely investigated and its clinical
K. Imhof   +4 more
semanticscholar   +1 more source

Factors for strength attenuation of mudstone during slaking and disintegration

open access: yesYantu gongcheng xuebao, 2019
Slaking, a common engineering characteristic, is the main weathering mode from clay-bearing rocks to soils. Due to the influences of wetting-drying cycles of natural climate, mudstone can slake and disintegrate into the grains with different sizes, which
CAO Xue-shan 1, 2, E Li-su 1, LAI Xi-yang 1, ZHOU Sai 1, LI Guo-wei 1, 2, YUAN Jun-ping 2, WU Jian-tao 1, 2
doaj   +1 more source

Homologous Non-isotopic Symplectic Tori in Homotopy Rational Elliptic Surfaces

open access: yes, 2003
Let E(1)_K denote the closed 4-manifold that is homotopy equivalent (hence homeomorphic) to the rational elliptic surface E(1) and is obtained by performing Fintushel-Stern knot surgery on E(1) using a knot K in S^3.
Etgü, Tolga, Park, B. Doug
core   +1 more source

Soil-gas survey of liquefaction and collapsed caves during the Emilia seismic sequence

open access: yesAnnals of Geophysics, 2012
The epicentral area of the Emilia seismic sequence is located in the Emilia-Romagna Region (northern Italy), 45 km from the city of Modena (Figure 1). This area is sited within thrust-related folds of the Ferrara Arc, which represent the most external ...
Alessandra Sciarra   +6 more
doaj   +1 more source

Instanton induced Yukawa couplings from distant E3 and E(-1) instantons

open access: yes, 2015
We calculate non-perturbative contributions to Yukawa couplings on D3-branes at orbifold singularities due to E3 and fractional E(-1) instantons which do not intersect the visible sector branes.
Goodsell, Mark D., Witkowski, Lukas T.
core   +1 more source

A relationship between the PCR-RFLP polymorphism in porcine MYOG, MYOD1 and MYF5 genes and microstructural characteristics of m. longissimus lumborum in Pietrain × (Polish Large White × Polish Landrace) crosses

open access: yesCzech Journal of Animal Science, 2004
Muscle fibre formation takes place during embryonic development and is regulated by the MyoD gene family, which consists of four genes, MYOD1, myogenin, MYF5 and MRF4.
D. Kłosowska   +7 more
doaj   +1 more source

Analysis of functional xylanases in xylan degradation by Aspergillus niger E-1 and characterization of the GH family 10 xylanase XynVII

open access: yesSpringerPlus, 2013
Xylanases produced by Aspergillus niger are industrially important and many types of xylanases have been reported. Individual xylanases have been well studied for their enzymatic properties, gene cloning, and heterologous expression.
Yui Takahashi, H. Kawabata, S. Murakami
semanticscholar   +1 more source

Duality, Compactification, and $e^{-1/\lambda}$ Effects in the Heterotic String Theory

open access: yes, 1996
Two classes of stringy instanton effects, stronger than standard field theory instantons, are identified in the heterotic string theory. These contributions are established using type IIA/heterotic and type I/heterotic dualities.
Aspinwall   +31 more
core   +1 more source

Home - About - Disclaimer - Privacy