排序方式: 共有77条查询结果,搜索用时 31 毫秒
71.
Kamal Tahseen Khan Sher Bahadar Bakhsh Esraa M. Anwar Yasir 《Cellulose (London, England)》2021,28(17):11067-11080
Cellulose - In this research work, we present a synthesis of silver and cobalt bimetal nanoparticles stabilized by a carboxymethyl cellulose biopolymer (CMC-AgCo) and its coating on a cellulose... 相似文献
72.
A free boundary value problem is introduced to approximate the original Thomas–Fermi equation. The unknown truncated free
boundary is determined iteratively. We transform the free boundary value problem to a nonlinear boundary value problem defined
on [0,1]. We present an adaptive algorithm to solve the problem by means of the moving mesh finite element method. Comparison
of our numerical results with those obtained by other approaches shows high accuracy of our method. 相似文献
73.
M. Yasir Kızmaz 《代数通讯》2018,46(6):2631-2634
We give character-free proofs of two solvability theorems due to Isaacs. 相似文献
74.
75.
A novel technique based on the excimer laser induced crystallization and modification of TiO2 thin films is being reported. W+6 ions loaded TiO2 (WTO) precursor films were prepared by a modified sol–gel method and spin-coated onto microscopic glass slides. Pulsed KrF
(248 nm, 13 ns) excimer laser was used to irradiate the WTO amorphous films at various laser parameters. Mesoporous and nanostructured
films consisting of anatase and rutile were obtained after laser irradiation at room temperature. The effect of varying W+6 ions concentrations on structural and optical properties the WTO films was analyzed by X-ray diffraction, field-emission
scanning electron microscope, UV-Vis spectrophotometer and transmission electron microscope before and after laser treatment.
Films irradiated for 10 pulses at 65–75 mJ/cm2 laser fluence, exhibited anatase whereas higher parameters promoted the formation of rutile. XPS results revealed WO3 along with minor proportion of WO2 compounds after laser irradiation. Photo-absorbance of the WTO films was increased with increase in W+6 ions concentration in the film. TEM results exhibited a crystallite size of 15 nm which was confirmed from SEM results as
well. 相似文献
76.
Mohammad Madani Mahdi Fathizadeh Yasir Khan Ahmet Yildirim 《Mathematical and Computer Modelling》2011,53(9-10):1937-1945
In this paper, a Laplace homotopy perturbation method is employed for solving one-dimensional non-homogeneous partial differential equations with a variable coefficient. This method is a combination of the Laplace transform and the Homotopy Perturbation Method (LHPM). LHPM presents an accurate methodology to solve non-homogeneous partial differential equations with a variable coefficient. The aim of using the Laplace transform is to overcome the deficiency that is mainly caused by unsatisfied conditions in other semi-analytical methods such as HPM, VIM, and ADM. The approximate solutions obtained by means of LHPM in a wide range of the problem’s domain were compared with those results obtained from the actual solutions, the Homotopy Perturbation Method (HPM) and the finite element method. The comparison shows a precise agreement between the results, and introduces this new method as an applicable one which it needs fewer computations and is much easier and more convenient than others, so it can be widely used in engineering too. 相似文献
77.
Farukh Arjmand Huzaifa Yasir Khan Sartaj Tabassum 《Chemical record (New York, N.Y.)》2023,23(3):e202200247
During last two decades, there has been an enormous growth in the discovery of innovative active inorganic anticancer complexes (exerting remarkable cytotoxicity at sub micro-molar levels) derived from myriad ligand scaffolds, mainly acting on cancerous vs healthy cells by either halting or inhibiting their uncontrolled growth. The phenomenal success of cisplatin to treat numerous forms of solid malignancies has placed metal-based drugs to the forefront of treatment strategies against cancers. More than 10,000 platinum anticancer complexes have been developed during the past 40 years, but only five drugs have been approved for usage in humans while ten more complexes are currently undergoing clinical trials. Most of the compounds have failed either at R&D stages or in preclinical trails. This has led to extensive investigations by researchers of medicinal chemistry, including our group to design and prepare tailored 3d-metallo-drugs and organotin(IV) compounds from some naturally occurring bioactive compounds, such as amino-acids, peptides, chromone derivatives and NSAID's etc. that were used either alone or in cocktail combination, capable of specifically targeting DNA, lnc RNAs and proteins. Furthermore, 3d-metal ions such as copper, cobalt and zinc etc. incorporated in these ligand framework are biocompatible and induce a unique multi-modal mechanism of cytotoxic action involving angiogenesis, ROS-induced DNA damage, apoptosis by p53 mitochondrial genes and caspases etc. The results observed a positive correlation between the binding affinity of complexes with DNA (as quantified by intrinsic binding constant values) and their cytotoxic behavior. Complexes with high DNA binding propensity were typically lethal against a diverse panel of malignant cell types compared to normal cells. 相似文献