نتایج جستجو برای: substitution lines

تعداد نتایج: 272050  

Journal: :International Journal of Financial Studies 2023

Lines of credit constitute an integral part a firm’s liquidity policy; however, there is limited research on lines in emerging markets. This study fills this gap by examining firm incentives to access and draw from using the context Jordan, bank-based market, focusing impact family firms. To account for endogeneity control, estimates probability accessing line seemingly unrelated bivariate prob...

Journal: :Chemosensors 2022

Five new disubstituted 2,6-thioaryl-BODIPY dyes were synthesized via selective aromatic electrophilic substitution from commercially available thiophenols. The analysis of the photophysical properties absorption and emission spectroscopy showed unusually large Stokes shifts for BODIPY fluorophores (70–100 nm), which makes them suitable probes bioimaging. Selected compounds evaluated labelling p...

  Objective(s): Chalcones and their rigid analogues represent an important class of small molecules having anticancer activities. Therefore, in this study the synthesis and cytotoxic activity of new 3-benzylidenchroman-4-ones were described as rigid chalcone analogues.   Materials and Methods: The reaction of resorcinol with 3-chloropropionic acid in the presence of CF3SO3H was a...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1980
C C Laurie-Ahlberg G Maroni G C Bewley J C Lucchesi B S Weir

The genetic component of variation of enzyme activity in natural populations of Drosophila melanogaster was investigated by using two sets of chromosome substitution lines. The constitution of a line of each type is: i(1)/i(1);+(2)/ +(2);i(3)/i(3) and i(1)/i(1);i(2)/ i(2);+(3)/+(3), where i refers to a chromosome from a highly inbred line and + refers to a chromosome from a natural population. ...

The current study highlights the in vitro antioxidant and antitumor activity of the previously-synthesized hydrazone derivatives against various free radicals and human cancer cell lines, respectively. The anticancer efficacies of the compound were tested by measuring cytotoxicity in cancer cell lines HeLa, A549, and non-cancerous NL20 cells. Compounds possessing electron-donor methoxy and me...

Journal: :Blood 2000
M P McCormack T J Gonda

Several activating mutations have recently been described in the common beta subunit for the human interleukin(IL)-3, IL-5, and granulocyte-macrophage colony-stimulating factor (GM-CSF) receptors (hbetac). Two of these, FIDelta and I374N, result, respectively, in a 37-amino acid duplication and an isoleucine-to-asparagine substitution in the extracellular domain. A third, V449E, leads to valine...

2001
Pierre Arnoux Valérie Berthé Hiromi Ei Shunji Ito

The aim of this paper is to give an overview of recent results about tilings, discrete approximations of lines and planes, and Markov partitions for toral automorphisms. The main tool is a generalization of the notion of substitution. The simplest examples which correspond to algebraic parameters, are related to the iteration of one substitution, but we show that it is possible to treat arbitra...

2000
K. M. Eskridge M. M. Shah

controlling economically important quantitative traits (Law, 1966). Recombinant inbred chromosome lines are Techniques based on intercultivar chromosome substitution lines partial substitution lines that carry one or a few chromoin wheat (Triticum aestivum L.) have been used to identify and locate the genes controlling quantitative traits on a specific chromosome. For somal segments instead of ...

Journal: :iranian journal of basic medical sciences 0
bahram letafat department of chemistry, central tehran-branch, islamic azad university, tehran, iran raheleh shakeri institute of biochemistry and biophysics, university of tehran, tehran, iran saeed emami department of medicinal chemistry and pharmaceutical sciences research center, faculty of pharmacy, mazandaran university of medical sciences, sari, iran saeedeh noushini department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences research center, tehran university of medical sciences, tehran, iran negar mohammadhosseini department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences research center, tehran university of medical sciences, tehran, iran nayyereh shirkavand department of chemistry, central tehran-branch, islamic azad university, tehran, iran

objective(s): chalcones and their rigid analogues represent an important class of small molecules having anticancer activities. therefore, in this study the synthesis and cytotoxic activity of new 3-benzylidenchroman-4-ones were described as rigid chalcone analogues.   materials and methods: the reaction of resorcinol with 3-chloropropionic acid in the presence of cf3so3h was afforded correspon...

2003
P. A. LEVENE ALEXANDRE ROTHEN

In recent years many efforts have been made aiming to define the conditions of the reaction of substitution which lead to inversion of configuration (Walden inversion). The investigations in this direction of Polanyi et al.,’ of Olson,2 of Hughes, Ingold, et aL3 are most outstanding. Polanyi et al. and Olson came to the conclusion that all reactions of substitution by a negative group or ion ar...

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