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181.
M. Saeed Arayne Najma Sultana M. Kamran Zaman 《Accreditation and quality assurance》2008,13(8):431-432
The concept of good manufacturing practice (GMP) is not new; its roots are very old. The incidents that gave birth to the
concept of GMP are summarized in this article. The journey from the FDA toward GMP is highlighted in chronological order.
These regulations are mandatory for pharmaceutical industries in order to manufacture quality products. 相似文献
182.
The non-linear equations of motion describing the incompressible axisymmetric flow in a flexible and extensible circular cylindrical tube is considered. By employing Lie theory, the full one-parameter infinitesimal transformation group leaving the equations of motion invariant is derived along with its associated Lie algebra. Subgroups of the full group are then used to obtain a reduction by one in the number of independent variable in the system. These reductions are continued until a system of ordinary differential equations is reached. A series type approximate solution of these ordinary differential equations is obtained which leads to a series type approximate solutions in R2{0} to momentum equations. 相似文献
183.
Tayyab Kamran 《Journal of Mathematical Analysis and Applications》2004,299(1):235-241
We define the property (E.A) for single-valued and multivalued mappings and introduce the notion of T-weak commutativity for a hybrid pair (f,T) of single-valued and multivalued maps. We obtain some coincidence and fixed point theorems for this class of maps and derive, as application, an approximation theorem. 相似文献
184.
Dr. Maximilian N. Kopylovich Dr. Archana Mizar Dr. M. Fátima C. Guedes da Silva Dr. Tatiana C. O. Mac Leod Dr. Kamran T. Mahmudov Prof. Armando J. L. Pombeiro 《Chemistry (Weinheim an der Bergstrasse, Germany)》2013,19(2):588-600
A one‐pot template condensation of 2‐(2‐(dicyanomethylene)hydrazinyl)benzenesulfonic acid (H2L1, 1 ) or 2‐(2‐(dicyanomethylene)hydrazinyl)benzoic acid (H2L2, 2 ) with methanol (a), ethylenediamine (b), ethanol (c) or water (d) on copper(II), led to a variety of metal complexes, that is, mononuclear [Cu(H2O)2(κO1,κN2 L1a] ( 3 ) and [Cu(H2O)(κO1,κN3 L1b)] ( 4 ), tetranuclear [Cu4(1 κO1,κN2:2 κO1 L2a)3‐(1 κO1, κN2:2 κO2 L2a)] ( 5 ), [Cu2(H2O)(1 κO1, κN2:2 κO1 L2c)‐(1 κO1,1 κN2:2 κO1,2 κN1‐ L2c)]2 ( 6 ) and [Cu2(H2O)2(κO1,κN2‐ L1dd)‐(1 κO1,κN2:2 κO1 L1dd)(μ‐H2O)]2 ? 2 H2O ( 7? 2 H2O), as well as polymer‐ ic [Cu(H2O)(κO1,1 κN2:2 κN1 L1c)]n ( 8 ) and [Cu(NH2C2H5)(κO1,1 κN2:2 κN1L2a)]n ( 9 ). The ligands 2‐SO3H‐C6H4‐(NH)N?C{(CN)[C(NH2)‐(?NCH2CH2NH2)]} (H2L1b, 10 ), 2‐CO2H‐C6H4‐(NH)N?{C(CN)[C(OCH3)‐(?NH)]} (H2L2a, 11 ) and 2‐SO3H‐C6H4‐(NH)N?C{C(?O)‐(NH2)}2 (H2L1dd, 12 ) were easily liberated upon respective treatment of 4 , 5 and 7 with HCl, whereas the formation of cyclic zwitterionic amidine 2‐(SO3?)? C6H4? N?NC(? C?(NH+)CH2CH2NH)(?CNHCH2CH2NH) ( 13 ) was observed when 1 was treated with ethylenediamine. The hydrogen bond‐induced E/Z isomerization of the (HL1d)? ligand occurs upon conversion of [{Na(H2O)2(μ‐H2O)2}(HL1d)]n ( 14 ) to [Cu(H2O)6][HL1d]2 ? 2 H2O ( 15 ) and [{CuNa(H2O)‐(κN1,1 κO2:2 κO1 L1d)2}K0.5(μ‐O)2]n ? H2O ( 16 ). The synthesized complexes 3 – 9 are catalyst precursors for both the selective oxidation of primary and secondary alcohols (to the corresponding carbonyl compounds) and the following diastereoselective nitroaldol (Henry) reaction, with typical yields of 80–99 %. 相似文献
185.
186.
We compute the Green’s function for the wave equation on forms on the symmetric spaces M × Σ, where M is a simply connected n-dimensional Riemannian or Lorentzian manifold of constant curvature and Σ is a simply connected Riemannian surface of constant curvature. Our approach is based on a generalization to the case of
differential forms of the method of spherical means and on the use of Riesz distributions on manifolds. The radial part of
the Green’s function is governed by a fourth order analogue of the Heun equation. 相似文献
187.
Kamal Alizadeh Ali Reza Ghiasvand Mohammad Borzoei Somaeih Zohrevand Behrooz Rezaei Payman Hashemi Mojtaba Shamsipur Bozorgmehr Maddah Ali Morsali Kamran Akhbari Issa Yavari 《Journal of Molecular Liquids》2009,149(3):60-65
The acidity constants of three new aminobenzoic acid derivatives were determined using potentiometric and spectrophotometric methods in 0.10 M aqueous potassium nitrate solution as supporting electrolyte. The potentiometric data and UV–Vis absorption spectra of solutions were recorded in the course of their pH-metric titration with a standard base solution. The protolytic equilibrium constants, concentration distribution diagrams and number of components involved have been calculated. The relative pKa values for three acids were also calculated using ab initio quantum mechanical method at the HF/6-31G** level of theory in combination with CPCM continuum solvation method. The influence of substituents on the ionization constants of the studied molecular structures was investigated. The satisfactory agreement between the experimentally derived and theoretically calculated pKa values provides solid support for the acid–base reactions proposed in this work. 相似文献
188.
Kamran Divaani-Aazar Mohammad Ali Esmkhani Massoud Tousi 《Proceedings of the American Mathematical Society》2006,134(10):2817-2822
Let be a commutative ring with identity and an -module. It is shown that if is pure injective, then is isomorphic to a direct summand of the direct product of a family of finitely embedded modules. As a result, it follows that if is Noetherian, then is pure injective if and only if is isomorphic to a direct summand of the direct product of a family of Artinian modules. Moreover, it is proved that is pure injective if and only if there is a family of -algebras which are finitely presented as -modules, such that is isomorphic to a direct summand of a module of the form , where for each , is an injective -module.
189.
Aytan R. Asgarova Ali N. Khalilov Ivan Brito Abel M. Maharramov Namiq G. Shikhaliyev Jonathan Cisterna Alejandro Crdenas Atash V. Gurbanov Fedor I. Zubkov Kamran T. Mahmudov 《Acta Crystallographica. Section C, Structural Chemistry》2019,75(3):342-347
Cooperative action of hydrogen and halogen bonding in the reaction of 3‐(3,5‐di‐tert‐butyl‐4‐hydroxyphenyl)‐1‐phenylprop‐2‐en‐1‐one with HCl or HBr in alcohol medium under microwave irradiation (20 W, 80 °C, 10 min) allows the isolation of the haloetherification products (2S,3S)‐3‐(3‐tert‐butyl‐5‐chloro‐4‐hydroxyphenyl)‐2‐chloro‐3‐ethoxy‐1‐phenylpropan‐1‐one, C21H24Cl2O3, (2S,3S)‐2‐bromo‐3‐(3‐tert‐butyl‐5‐bromo‐4‐hydroxyphenyl)‐3‐methoxy‐1‐phenylpropan‐1‐one, C20H22Br2O3, and (2S,3S)‐2‐bromo‐3‐(3‐tert‐butyl‐5‐bromo‐4‐hydroxyphenyl)‐3‐ethoxy‐1‐phenylpropan‐1‐one, C21H24Br2O3, in good yields. Both types of noncovalent interactions, e.g. hydrogen and halogen bonds, are formed to stabilize the obtained products in the solid state. 相似文献
190.
Kamran Divaani-Aazar Amir Mafi 《Proceedings of the American Mathematical Society》2005,133(3):655-660
Let be an ideal of a commutative Noetherian ring and a finitely generated -module. Let be a natural integer. It is shown that there is a finite subset of , such that is contained in union with the union of the sets , where and . As an immediate consequence, we deduce that the first non- -cofinite local cohomology module of with respect to has only finitely many associated prime ideals.