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Hussain, Raja Azadar,Badshah, Amin,Asma, Maliha Korean Chemical Society 2010 대한화학회지 Vol.54 No.1
Schiff 리간드인 (Z)-N-((Z)-2-(sec-butylimino)-1,2-diphenylethylidene)butan-2-amine을 벤질과 sec-부틸아민과의 축합반응에 의해 합성하였다. 일 주기 전이금속인 망간(II) 및 니켈(II)과 리간드와의 착물반응을 시도하였다. 리간드 및 착물의 특성을 FTIR, 원소분석 및 열무게분석으로 고체 상태에서, 그리고 NMR ($^1H,\;^{13}C$)로 용액 상태에서의 각각 조사하였다. 두 착물 모두 온화한 조건에서 methylaluminoxane (MAO) 존재 하에 부타디엔 올리고화 반응의 조촉매로 좋은 촉매활성을 보였다. A Schiff base ligand (Z)-N-((Z)-2-(sec-butylimino)-1,2-diphenylethylidene)butan-2-amine was synthesized by condensation of benzil with sec-butyl amine. Complexation of the ligand was carried out with first row transition elements, manganese(II) and nickel(II). Ligand and complexes were characterized by FTIR, elemental analysis and thermogravimetric analysis in solid state and by NMR ($^1H,\;^{13}C$) in solution form. Both the complexes demonstrate good catalytic activity for butadiene oligomerization under mild conditions with methylaluminoxane (MAO) as co-catalyst.
Arylazomethylene Derivatives as Molluscicides
El-amin, Samir M.,Ali Harb, Abd Elfattah The Pharmaceutical Society of Korea 1991 Archives of Pharmacal Research Vol.14 No.3
Arylazomethylene derivatives as molluscicides were synthesized from hetro cyclic amines.
Plazomicin—a New Aminoglycoside—for Treating Complicated Urinary Tract Infections
라흐만 모하마드 세이더,Gazi Mohammad Al Amin,Shah Mohammad Anwar,Mohammad Ferdaus Azam,Fatema Akhter,Mohammad Rabiul Islam,고영상 대한미생물학회 2023 Journal of Bacteriology and Virology Vol.53 No.1
Plazomicin belongs to a new class of semisynthetic aminoglycosides that suppress bacterial protein synthesis. The US Food and Drug Administration has approved this antibacterial drug for use in adult patients with complicated urinary tract infections (cUTIs), such as pyelonephritis. The worldwide emergence of multidrug- resistant (MDR) organisms has become a significant health issue. It is a promising alternative to carbapenems or β-lactam/β-lactamase inhibitors for treating cUTIs caused by MDR Enterobacterales. Plazomicin is primarily designed to overcome the common resistance mechanisms of pathogens. It has also demonstrated good in vitro efficacy against various resistant gram-negative pathogens. Plazomicin inhibits bacterial protein synthesis and exhibits rapid bactericidal efficacy against numerous extended-spectrum beta-lactamase (ESBL) producing, aminoglycoside- resistant, and carbapenem-resistant bacterial isolates. Similar to other amin- oglycosides, plazomicin inhibits bacterial protein synthesis by attaching to the 30S ribosomal subunit of bacteria. Plazomicin also demonstrated a favorable minimum inhibitory concentration value compared to other aminoglycosides such as gentamicin, amikacin, and tobramycin. The commonly observed adverse effects of plazomicin include headache, hypertension, nausea, diarrhea, vomiting, and hypotension. In this review, we discuss the likelihood of using plazomicin to treat bacterial infections, focusing on its chemistry, mode of action pharmacokinetics, indications for treatment, adverse reactions, and safety profile.
Deformation Analysis of Roll Mold for Nano-flexible Devices
Amin Khaliq(Amin Khaliq ),Usama Tahir(Usama Tahir ),Jeong Myung Yung (Jeong Jeong) 한국마이크로전자및패키징학회 2021 마이크로전자 및 패키징학회지 Vol.28 No.4
Nanoimprint lithography (NIL) has revolutionized the fabrications of electronics, photonics, optical and biological devices. Among all the NIL processes, roll-to-roll nanoimprinting is regarded best for having the attributes of low cost, continuous, simple, and energy-efficient process for nanoscale device fabrication. However, large-area printing is limited by the master mold deformation. In this study, a finite element model (FEM) has been constructed to assess the deformation of the roll mold adhesively wrapped on the carbon fiber reinforced material (CFRP) base roll. This study also optimizes the deformations in the metallic roll mold with respect to nip-forces applied in the printing process of nano-fabrication on large scale. The numerical simulations were also conducted to evaluate the deflection in roll mold assembly due to gravity. The results have shown decreasing trend of the deformation with decreasing nip-force. Also, pressure uniformity of about 40% has been optimized by using the current numerical model along with an acceptable deflection value in the vertical axis due to gravity.
An Application of TAM and TRI on the Factors Affecting Internet Banking Adoption in Bangladesh
Md. Iftekharul AMIN(Md. Iftekharul AMIN ),Nafis ERFAN(Nafis ERFAN ),Mashrur NAVID(Mashrur NAVID ),Mohammed Shafiul Alam KHAN(Mohammed Shafiul Alam KHAN ),Md. Shariful ISLAM(Md. Shariful ISLAM ) 한국유통과학회 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.9
This study assesses the Internet banking adoption tendency by existing bank customers of Bangladesh. Currently, almost all the leading banks in the country have implemented Internet banking platforms. However, the active user count remains relatively low and there hasn’t been any conclusive research on the drivers and inhibitors of Internet banking. This study evaluates the reasons and quantitatively establishes the factors leading to the adoption and usage continuance of internet banking by existing bank customers. Responses from 460 bank account holders were collected via online questionnaires using a purposive sampling approach, and a core conceptual framework based on Technology Acceptance Model (TAM) and Technology Readiness Index (TRI) was used. The study concluded that internet banking adoption is significantly impacted by the ease of use, customer service, and technology familiarity. Similarly, customer satisfaction is affected by the perceived value and the perceived risk. Through regression analysis, it was found that usage continuance is 89% explained by adoption and customer satisfaction. Multi-group moderation showed significant impact by groups divided based on usage frequency, income level, and age. Perceived risk weakened the impact of perceived value and technology familiarity on usage adoption. Additionally, perceived risk reduced the impact of consumer satisfaction and usage continuance.
Gas phase selective conversion of glycerol to acrolein over supported silicotungstic acid catalyst
Amin Talebian-Kiakalaieh,Nor Aishah Saidina Amin,Zaki Yamani Zakaria 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.34 No.-
Gas phase dehydration of glycerol to acrolein over a series of supported HSiW on ZrO2 and nano-sized g-Al2O3 catalyst has been investigated. The characterization results revealed that impregnation of g-Al2O3nanoparticles increased the specific surface area, pore diameter, and thermal stability of the supportedcatalysts. The highest acrolein selectivity of 88.5% at 97.0% glycerol conversion was achieved over 0.5 g30HZ-20A catalyst in 3 h at glycerol feed concentration of 10 wt%, temperature = 300 ?C andTOF = 136 h 1. The coke deposition has no significant effect on the activity of 30HZ-20A catalyst. Indeed, the catalyst was stable even after 40 h.
Automated recognition of white blood cells using deep learning
Amin Khouani,Mostafa El Habib Daho,Sidi Ahmed Mahmoudi,Mohammed Amine Chikh,Brahim Benzineb 대한의용생체공학회 2020 Biomedical Engineering Letters (BMEL) Vol.10 No.3
The detection, counting, and precise segmentation of white blood cells in cytological images are vital steps in the eff ectivediagnosis of several cancers. This paper introduces an effi cient method for automatic recognition of white blood cells inperipheral blood and bone marrow images based on deep learning to alleviate tedious tasks for hematologists in clinicalpractice. First, input image pre-processing was proposed before applying a deep neural network model adapted to cellslocalization and segmentation. Then, model outputs were improved by using combined predictions and corrections. Finally,a new algorithm that uses the cooperation between model results and spatial information was implemented to improve thesegmentation quality. To implement our model, python language, Tensorfl ow, and Keras libraries were used. The calculationswere executed using NVIDIA GPU 1080, while the datasets used in our experiments came from patients in the Hemobiologyservice of Tlemcen Hospital (Algeria). The results were promising and showed the effi ciency, power, and speed of theproposed method compared to the state-of-the-art methods. In addition to its accuracy of 95.73%, the proposed approachprovided fast predictions (less than 1 s).
Amin, A.R.M.R.,Karpowicz, P.A.,Carey, T.E.,Arbiser, J.,Nahta, R.,Chen, Z.G.,Dong, J.T.,Kucuk, O.,Khan, G.N.,Huang, G.S.,Mi, S.,Lee, H.Y.,Reichrath, J.,Honoki, K.,Georgakilas, A.G.,Amedei, A.,Amin, A. Saunders Scientific Publications ; Academic Press 2015 SEMINARS IN CANCER BIOLOGY Vol.35 No.suppl
The evasion of anti-growth signaling is an important characteristic of cancer cells. In order to continue to proliferate, cancer cells must somehow uncouple themselves from the many signals that exist to slow down cell growth. Here, we define the anti-growth signaling process, and review several important pathways involved in growth signaling: p53, phosphatase and tensin homolog (PTEN), retinoblastoma protein (Rb), Hippo, growth differentiation factor 15 (GDF15), AT-rich interactive domain 1A (ARID1A), Notch, insulin-like growth factor (IGF), and Kruppel-like factor 5 (KLF5) pathways. Aberrations in these processes in cancer cells involve mutations and thus the suppression of genes that prevent growth, as well as mutation and activation of genes involved in driving cell growth. Using these pathways as examples, we prioritize molecular targets that might be leveraged to promote anti-growth signaling in cancer cells. Interestingly, naturally occurring phytochemicals found in human diets (either singly or as mixtures) may promote anti-growth signaling, and do so without the potentially adverse effects associated with synthetic chemicals. We review examples of naturally occurring phytochemicals that may be applied to prevent cancer by antagonizing growth signaling, and propose one phytochemical for each pathway. These are: epigallocatechin-3-gallate (EGCG) for the Rb pathway, luteolin for p53, curcumin for PTEN, porphyrins for Hippo, genistein for GDF15, resveratrol for ARID1A, withaferin A for Notch and diguelin for the IGF1-receptor pathway. The coordination of anti-growth signaling and natural compound studies will provide insight into the future application of these compounds in the clinical setting.
Comparative proteomics and global genome-wide expression data implicate role of ARMC8 in lung cancer
Amin, Asif,Bukhari, Shoiab,Mokhdomi, Taseem A,Anjum, Naveed,Wafai, Asrar H,Wani, Zubair,Manzoor, Saima,Koul, Aabid M,Amin, Basit,Qurat-ul-Ain, Qurat-ul-Ain,Qazi, Hilal,Tyub, Sumira,Lone, Ghulam Nabi,Q Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.9
Background: Cancer loci comprise heterogeneous cell populations with diverse cellular secretions. Therefore, disseminating cancer-specific or cancer-associated protein antigens from tissue lysates could only be marginally correct, if otherwise not validated against precise standards. Materials and Methods: In this study, 2DE proteomic profiles were examined from lysates of 13 lung-adenocarcinoma tissue samples and matched against the A549 cell line proteome. A549 matched-cancer-specific hits were analyzed and characterized by MALDI-TOF/MS. Results: Comparative analysis identified a total of 13 protein spots with differential expression. These proteins were found to be involved in critical cellular functions regulating pyrimidine metabolism, pentose phosphate pathway and integrin signaling. Gene ontology based analysis classified majority of protein hits responsible for metabolic processes. Among these, only a single non-predictive protein spot was found to be a cancer cell specific hit, identified as Armadillo repeat-containing protein 8 (ARMC8). Pathway reconstruction studies showed that ARMC8 lies at the centre of cancer metabolic pathways. Conclusions: The findings in this report are suggestive of a regulatory role of ARMC8 in control of proliferation and differentiation in lung adenocarcinomas.