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排序方式: 共有123条查询结果,搜索用时 31 毫秒
41.
Jinghua Shi Oguzhan Alagoz Fatih Safa Erenay Qiang Su 《Annals of Operations Research》2014,221(1):331-356
While chemotherapy is an effective method for treating cancers such as colorectal cancer, its effectiveness may be dampened by the drug resistance and it may have significant side effects due to the destruction of normal cells during the treatment. As a result, there is a need for research on choosing an optimal chemotherapy treatment plan that minimizes the number of cancerous cells while ensuring that the total toxicity is below an allowable limit. In this paper, we summarize the mathematical models applied to the optimal design of the cancer chemotherapy. We first elaborate on a typical optimization model and classify relevant literature with respect to modeling methods: Optimal control model (OCM) and others. We further classify the OCM models with respect to the solution method used. We discuss the limitations of the existing research and provide several directions for further research in optimizing chemotherapy treatment planning. 相似文献
42.
Cover Picture: Detection of Explosive Vapors: The Roles of Exciton and Molecular Diffusion in Real‐Time Sensing (ChemPhysChem 21/2016)
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43.
R. Azimirad A. Khayatian M. Almasi Kashi S. Safa 《Journal of Sol-Gel Science and Technology》2014,71(3):540-548
Encapsulated ZnO nanorod arrays were fabricated using a two-step method; hydrothermal followed by dip-coating. Intensity of X-ray diffraction peaks of ZnO nanorod films increased by encapsulation with ZnO and Fe doped ZnO layer. Encapsulation process increased diameter of the rods in a range of 20–40 nm. The optical studies indicated that the band-gap decreased with increment of the nanorod diameter, and increased with Fe doping in the ZnO layer. The electrical resistance of the samples demonstrated a remarkable reduction due to encapsulation, especially in the sample encapsulated with Fe doped-ZnO layer. The photoresponse behavior of ZnO nanorod films was investigated under different powers of ultraviolet illumination. The photoresponsivity was improved for encapsulated nanorods as compared to bare nanorods. 相似文献
44.
Mohammad Anary-Abbasinejad Mohammad H. Mosslemin Alireza Hassanabadi Safiyeh Tajik Safa 《合成通讯》2013,43(15):2209-2214
Reaction between aldehydes and amides catalyzed by p-toluene sulfonic acid in solvent-free conditions provided a simple and efficient one-pot route for the synthesis of symmetrical bisamide derivatives in excellent yields. 相似文献
45.
Shoaee S Eng MP An Z Zhang X Barlow S Marder SR Durrant JR 《Chemical communications (Cambridge, England)》2008,(40):4915-4917
We report on photoinduced charge separation in solid films of two perylene diimides; intramolecular charge separation and recombination is correlated with a reduction in the yield of long-lived, intermolecular charge-separated species. 相似文献
46.
Suchetha Shetty Dr. Noorullah Baig Dr. Muhieddine Safa Dr. Ridha Gharbi Dr. Santhanagopalan Sriram Dr. Firas Rasoul Prof. Dr. Bassam Alameddine 《ChemistryOpen》2021,10(10):1067-1073
We report the synthesis, characterization, and photophysical properties of novel metal oxide nanoparticles (NPs) coated with specially designed fluorescein substituents which are capped with electron-withdrawing groups. The fluorescein-coated nanoparticles were synthesized in excellent yields, and their structures were confirmed using various advanced spectroscopic, instrumental, and surface analysis techniques, revealing the formation of the target functionalized nanoparticles (FNPs) which show superior chemical and thermal stabilities. In addition, the photophysical properties of the FNPs were examined using UV-visible absorption and fluorescence spectroscopy. These latter techniques disclosed aggregation-induced emission (AIE) properties for most of the target FNPs, namely those which are soluble in common organic solvents at selective concentration ranges of water fractions in the solvent mixture. 相似文献
47.
Elif Mine Öncü-Kaya Nilgün Şide Özer Gök Asiye Safa Özcan 《Journal of Dispersion Science and Technology》2017,38(8):1211-1220
The removal efficiency of Reactive Blue 19 (RB19) by using surfactant-modified bentonite (MB) from aqueous solutions, and also textile wastewater samples was examined. Natural bentonite (NB) was firstly modified with didodecyldimethylammonium bromide (DDDAB) in order to increase the removal capacity of bentonite. MB was then characterized by Fourier Transformed Infrared Spectrophotometer (FTIR), x-ray diffractometry (XRD), x-ray fluorescence (XRF), Scanning Electron Microscope (SEM)/EDX, zeta potential, elemental, and thermal analysis techniques. The high adsorption capacity of MB was 407.7?mg g?1 at pH?=?1.5 and 20°C. The adsorption of Reactive Blue 19 onto MB agreed with the pseudo-second-order kinetic and Langmuir isotherm models. 相似文献
48.
In this paper, we characterize the structure of the c-nilpotent multiplier of a pair of Lie algebras concerning the c-covering pairs and discuss some results on the existence of c-covers of a pair of Lie algebras. Moreover, we show that every nilpotent pair of Lie algebras of class at most k with non-trivial c-nilpotent multiplier does not admit any c-covering pair, if c>k. Also, we obtain the structure of c-covers of a c-capable pair of Lie algebras. 相似文献
49.
Vahideh Raeisdasteh Hokmabad Hassan Abbasi Kazem D. Safa 《Journal of the Iranian Chemical Society》2017,14(3):665-670
A three-component efficient procedure is described for the synthesis of novel α-acyloxycarboxamides containing bis(trimethylsilyl)ethenyl group from 4-[2,2-bis(trimethylsilyl)ethenyl]benzaldehyde, aromatic carboxylic acids and isocyanides, via the Passerini reaction. This reaction proceeds smoothly and cleanly under mild conditions in H2O and [bmim]BF4 at room temperature and led to products in good yields. The silylated aldehyde was obtained via Peterson olefination reaction of terephthalaldehyde with tris(trimethylsilyl)methyllithium in THF at 0 °C. 相似文献
50.
Yavari I Sabbaghan M Porshamsian K Bagheri M Ali-Asgari S Hossaini Z 《Molecular diversity》2007,11(2):81-85
Reaction of 1-aryl-3-arylcarbonylthioureas with dialkyl acetylenedicarboxylates in CH2Cl2 at room temperature leads to alkyl 2-[2-(arylcarbonylimino)-3-aryl-4-oxo-1,3-thiazolan-5-ylidene]-acetates in good yields. 相似文献