نتایج جستجو برای: it has been shown

تعداد نتایج: 4981354  

2000
Stijn Claessens Lixin Colin Xu

The sharp decline in the once-stellar performance of East Asian corporations following the 1997 financial crisis has sparked an intense debate. Some observers argue that external shocks, including a drop in aggregate demand and a shortage of working capital, explain the corporate sector’s poor performance. Others assert that the difficulties were apparent well before the crisis and that the ris...

2017
Johannes Bergsten Elisabeth Weingartner Jiří Hájek

The species status of Hyphydrus anatolicus Guignot, 1957 and H. sanctus Sharp, 1882, previously often confused with the widespread H. ovatus (Linnaeus, 1760), are tested with molecular and morphological characters. Cytochrome c oxidase subunit 1 (CO1) was sequenced for 32 specimens of all three species. Gene-trees were inferred with parsimony, time-free bayesian and strict clock bayesian analys...

2010
Omar bin Shawkataly Imthyaz Ahmed Khan Chin Sing Yeap Hoong-Kun Fun

The asymmetric unit of the title triangulo-triruthenium compound, [Ru(3)(C(25)H(22)As(2))(C(18)H(14)BrP)(CO)(9)]·0.3CHCl(3), contains one mol-ecule of the triangulo-triruthenium complex and one partially occupied disordered chloro-form solvent mol-ecule. The bis-(diphenyl-arsino)methane ligand bridges an Ru-Ru bond and the monodentate phosphine ligand bonds to the third Ru atom. Both the arsine...

2010
Omar bin Shawkataly Imthyaz Ahmed Khan Chin Sing Yeap Hoong-Kun Fun

The asymmetric unit of the title triangulo-triruthenium compound, [Ru(3)(C(25)H(22)As(2))(C(20)H(19)O(2)P)(CO)(9)]·0.15CH(2)Cl(2), contains one mol-ecule of the triangulo-triruthenium complex and one partially occupied dichloro-methane solvent mol-ecule. The dichloro-methane solvent lies across a crystallographic inversion center leading to the mol-ecule being disordered over two positions of e...

2016
Ryan A. Decker John Haltiwanger Ron S. Jarmin Javier Miranda

The pace of business dynamism as measured by indicators such as job reallocation has declined in the U.S. in recent decades, but this decline has not been monotonic for all sectors. For the High Tech sector, business dynamism as measured by the pace of job reallocation rose through the 1990s but then declined sharply in the post-2000 period. This is in contrast with the Retail Trade sector, whi...

پایان نامه :0 1375

investigation the archetype of mother can help the reader to understand poes works, especially his fiction, better, if not fully. motivated by internal and external drives to get into the universe in its manifold form poe was impelled to art and, from various modes of art, to symbolism. how much was poe successful to produce works of art has been a matter of dispute among critics. however, ther...

Journal: :Cell 2007
Robert Tjian

The world has lost one of its great scientists and the University of California its most influential educator with the death of Daniel E. Koshland, Jr. on Monday, July 23, 2007. Dan’s career spanned 60 years of creative biochemical research, and he was actively planning his next experiments on the Friday before his sudden death. Those of us fortunate enough to have experienced Dan’s extraordina...

2010
Omar bin Shawkataly Imthyaz Ahmed Khan Siti Syaida Sirat Chin Sing Yeap Hoong-Kun Fun

The asymmetric unit of the title triangulo-triruthenium compound, 2[Ru(3)(C(25)H(22)As(2))(C(21)H(21)AsS(3))(CO)(9)]·CH(2)Cl(2), consists of one triangulo-triruthenium complex mol-ecule and one half of a dichloro-methane mol-ecule which lies across a crystallographic inversion center, leading to the disorder of this mol-ecule over two positions of equal occupancy. The bis-(diphenyl-arsino)metha...

2009
Omar bin Shawkataly Imthyaz Ahmed Khan Chin Sing Yeap Hoong-Kun Fun

The asymmetric unit of the title triangulo-triruthenium compound, 2[Ru(3)(C(25)H(22)As(2))(C(18)H(12)Cl(3)P)(CO)(9)]·CHCl(3), consists of two mol-ecules (A and B) of the triangulo-triruthenium complex and one mol-ecule of chloro-form solvent. The bis-(diphenyl-arsino)methane ligand bridges an Ru-Ru bond and the monodentate phosphine ligand bonds to the third Ru atom. Both the phosphine and arsi...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و زبانهای خارجی 1390

abstract this research is about a longitudinal case study of english morpheme acquisition by a persian speaking child l2 learner of english (2 .9-3).the goal of this research has been discovery of the child ‘s ability in acquiring of english morphemes in a persian context while only one person (the child’ s father)has been talking to her.this child has also been exposed to english languag...

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