Finite element micro-modelling of RC frames with variant configurations of infill masonry

Aslam F. Mohammad,Fatima Khalid,Rashid A. Khan 국제구조공학회 2022 Structural Engineering and Mechanics, An Int'l Jou Vol.81 No.4

The presence of infill generally neglected in design despite the fact that infill contribution significantly increase the lateral stiffness and strength of the reinforced concrete frame structure. Several experimental studies and computational models have been proposed to capture the rational response of infill-frame interaction at global level. However, limited studies are available on explicit finite element modelling to study the local behavior due to high computation and convergence issues in numerical modelling. In the current study, the computational modelling of RC frames is done with various configurations of infill masonry in terms of types of blocks, lateral loading and reinforcement detailing employed with material nonlinearities, interface contact issues and bond-slip phenomenon particularly near the beam-column joints. To this end, extensive computational modelling of five variant characteristics test specimens extracted from the detailed experimental program available in literature and process through nonlinear static analysis in FEM code, ATENA generally used to capture the nonlinear response of reinforced concrete structures. Results are presented in terms of damage patterns and capacity curves by employing the finest possible detail provided in the experimental program. Comparative analysis shows that good correlation amongst the experimental and numerical simulated results both in terms of capacity and crack patterns.

Recent development in the green synthesis of titanium dioxide nanoparticles using plant-based biomolecules for environmental and antimicrobial applications

Mohammad Aslam,Ahmad Zuhairi Abdullah,Mohd Rafatullah 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.98 No.-

Nanoparticles (NPs) have properties for potential applications in different areas but their conventionalproduction processes are often linked to secondary health and environmental impacts. Aggressiveresearch endeavors are being undertaken to identify greener NPs synthesis strategies. Green synthesis isan evolving area with the objective of an efficient and environmental friendly development of NPs. Biological substances including bacteria, fungi, yeast, algae, and plant have been demonstrated to beapplicable for the synthesis of TiO2 NPs. This work is dedicated to phyto-based biosynthesis of TiO2 NPs. Biomolecules in plants such as terpenoids,flavones, ketones, aldehydes, proteins, amino acids, vitamins,alkaloids, tannins, phenolics, saponins, and polysaccharides can play vital roles as a reducing, cappingand stabilizing agent in the formation of TiO2 NPs. A systemic comparison is made with the focus on thebioreduction ability of different plant extracts to produce specific TiO2. Important results of applicableinstrumentation techniques for characterizing the TiO2 NPs are also elucidated to identify the superiorqualities of the NPs. Moreover, photocatalytic and antimicrobial applications of the phytosynthesizedTiO2 NPs are also critically discussed. The main scopes are the current status of plant- assistedbiosynthesis of TiO2 NPs and future prospects of this promising area of research.

Posner's First Theorem for *-ideals in Prime Rings with Involution

Ashraf, Mohammad,Siddeeque, Mohammad Aslam Department of Mathematics 2016 Kyungpook mathematical journal Vol.56 No.2

Posner's first theorem states that if R is a prime ring of characteristic different from two, $d_1$ and $d_2$ are derivations on R such that the iterate $d_1d_2$ is also a derivation of R, then at least one of $d_1$, $d_2$ is zero. In the present paper we extend this result to *-prime rings of characteristic different from two.

ON PERMUTING n-DERIVATIONS IN NEAR-RINGS

Ashraf, Mohammad,Siddeeque, Mohammad Aslam Korean Mathematical Society 2013 대한수학회논문집 Vol.28 No.4

In this paper, we introduce the notion of permuting $n$-derivations in near-ring N and investigate commutativity of addition and multiplication of N. Further, under certain constrants on a $n!$-torsion free prime near-ring N, it is shown that a permuting $n$-additive mapping D on N is zero if the trace $d$ of D is zero. Finally, some more related results are also obtained.

Proline nitrate ionic liquid as high temperature acid corrosion inhibitor for mild steel: Experimental and molecular-level insights

Ruby Aslam,Mohammad Mobin,Huda,Mohd Shoeb,Manilal Murmu,Priyabrata Banerjee 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.100 No.-

The synthesis of novel L-proline nitrate ionic liquid referred to as [Pro][NO3] (IL), was performed and the1H, 13C NMR, and FT-IR spectroscopic techniques were used to elucidate the chemical structure. Theinhibition properties of the [Pro][NO3] IL were evaluated for mild steel (MS) corrosion in 1 M HCl usinggravimetric measurement, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization(PDP) measurement, FT-IR spectroscopy, X-ray photoelectron spectroscopy (XPS), contact anglemeasurement, scanning electron microscopy (SEM), density functional theory (DFT) and Monte Carlo(MC) simulation studies. As indicated by electrochemical and weight loss techniques the tested [Pro][NO3] IL was established as an excellent mixed type high-temperature acid corrosion inhibitor for MS; theoptimal temperature and concentration being 70 C and 300 ppm, respectively. Furthermore, the contactangle measurement and surface studies revealed water-repelling property and the protecting capability,respectively of the investigated inhibitor. The electronic property of [Pro][NO3] IL has been exploredusing density functional theory (DFT) and the sites susceptible for electron sharing were identifiedthrough Fukui indices analysis. Furthermore, molecular dynamics simulation based on the Monte Carlomethod has been employed to envisage the spontaneous adsorption of [Pro][NO3] IL on MS surface.

Hardware Implementation of Perturb and Observe Maximum Power Point Tracking Algorithm for Solar Photovoltaic System

Afshan Ilyas,Mohammad Ayyub,M. Rizwan Khan,Mohammed Aslam Husain,Abhinandan Jain 한국전기전자재료학회 2018 Transactions on Electrical and Electronic Material Vol.19 No.3

Solar photovoltaic systems have evolved as a prominent renewable source of energy owing to its eco-friendly nature, longlifetime, and low maintenance requirement. However, its conversion effi ciency is very low. Diff erent maximum power pointtracking (MPPT) techniques have been used to extract maximum power from the photovoltaic system. In this study, theperturb and observe (P&O) MPPT algorithm, which is practically implemented on an Arduino Uno board and simulated inMatlab/Simulink under the same environmental conditions, is used to track the maximum power. Diff erent parameters ofa Simulink-based PV module and a practical photovoltaic module are obtained and compared. The main advantages of theP&O MPPT algorithm are its low cost and easy implementation. However, it may fail to track the maximum operating pointunder varying environmental conditions.

Comparative Advantage, Complementarity, Market Diversification and Trade Instability : A Case Study of Pakistan

Chaudhary, M. Aslam,Saleem, Mohammad 세종대학교 국제경제연구소 2001 Journal of Economic Integration Vol.16 No.4

In this paper pattern of Packistan's exports, comparative advantage of exports, Complementarity and commodity concentration of exports and export instability of Pakistan are analyzed. The mismatch between Pakistan's exports and world import is also identified. Different indices have been utilized to draw empirical evidences, such as comparative advantage index, commodity concentration index, and export instability index and Complementarity index etc. The results of the study indicated that, from 1972 to 1998, the growth rate of Pakistan's exports has increased, despite the wide variation in growth rates of demand for exports, across the trading member states. Packistan is one of those countries of the South Asia whose exports grew faster than other i.e. south asian association for Regional Cooperation Countries (SAARC)ㆍㆍ. However, compared with Japan and south Korea, Pakistan's exports have grown at a much slower pace. The results of Complementary Index suggests that Pakistan's exports are not closely linked to the dominant trading partners imports. The result of commodity concentration index indicates that Pakistan's exports consist upon few products, concentrated in few markets. It is also noted that during the early period of liberalization (1972-1982), commodity concretion increased, while it started to decline during the period of (1983-92), and continued to decline during the recent economic reform period(1993-89). The result of comparative advantage index shows mixed results. Only the minor exports group, i.e. carpets and rugs, has enjoyed comparative advantage, while major exports like textile and leather group did not experience comparative advantage. It was clear that all these product categories are losing competitive strength in the world market. If the same trends continue it is likely that Pakistan's exports will face serious problems in the new emerging world of globalization and free trade. The export Instability Index indicates that Pakistan's exports exhibits instability. Over time, export instability has increased for Pakistan while the same has shown decreasing trend for the rest of the world. Thus, the export performance of Pakistan is not consistent with the rest of the world. To overcome the above-mentioned problems, there is a need to follow aggressive trade policies, focused to decrease commodity concentration, increase in the number of exports, diversification of exports and markets and specialize in exports to improve upon comparative advantage. Besides, fluctuations in exports must be brought under control for smooth and stable flow of foreign exchange earnings. All the above requires drastic changes in the trade policy. Targeted trade policy to achieve the above could lead to bear fruitful results. It requires drastic changes in the trage policy. Targeted trade policy to achieve the above could lead to bear fruitful results.

GEOMETRIC INEQUALITIES FOR WARPED PRODUCTS SUBMANIFOLDS IN GENERALIZED COMPLEX SPACE FORMS

Mohd Aquib,Mohd Aslam,Michel Nguiffo Boyom,Mohammad Hasan Shahid Korean Mathematical Society 2023 대한수학회논문집 Vol.38 No.1

In this article, we derived Chen's inequality for warped product bi-slant submanifolds in generalized complex space forms using semisymmetric metric connections and discuss the equality case of the inequality. Further, we discuss non-existence of such minimal immersion. We also provide various applications of the obtained inequalities.

A comprehensive review on Tukhme Kunjud (Sesamum indicum Linn.) with special reference to Unani System of Medicine.

Khatoon, Rizwana,Abbasi, Hana,Aslam, Mohammad,Chaudhary, Shahid Shah Cellmed Orthocellular Medicine and Pharmaceutical 2019 셀메드 (CellMed) Vol.9 No.3

Sesame (Sesamum indicum L.) is a rich source of edible oil most commonly it is used as a food product mainly in bakeries and also use as a common source of oil in daily kitchen needs. Due to the presence of some special phytochemicals like proteins, fibers, oil, minerals and antioxidants it is highly used for medicinal and therapeutic purposes. It is a good source of energy and act as an antiaging agent. Its seeds are used as Anti-helmintic, antihypertensive, antimicrobial, cytotoxic and Hepatoprotective but its seed coat which is a byproduct of sesame and a cherished source of fibers is normally use for animal feedstuff. In Unani system of medicine it is used both as drug & diet (dawa wa ghida). In classical Unani literature it is indicated in various disorders like Asthma, Dry Cough, Gastritis (due to any drug, excessive use of alcohol), Dryness of Intestine, Dryness in throat, Renal Stone, Bleeding Piles, Amenorrhea, Retention of urine, Dysuria, Orchitis, Sexual Debility, Anorexia. The present review article, an attempt have been made to compile all the pharmacological and Pharmacognostical characters of Sesamum indicum with special reference to Unani literature.

Microfinance Effects on Borrowers' Poverty: A Case Study on BRAC

Muhammad Ziaulhaq Mamun,Mohammad Aslam 국제금융소비자학회 2022 The International Review of Financial Consumers(IR Vol.7 No.1

Many parts of the world have been suffering with poverty and some are in extreme form. Microfinance is addressed as an instrument for accelerating financial access to the poor for alleviating their poverty as mentioned in the foremost sustainable d evelopment g oal. T his effort h as b een o perationalized i n Bangladesh t hrough BRAC - a prime operator for poverty alleviation. BRAC is presently serving a large number of marginal poor below the poverty level globally. At the onset, governments and donor backed microfinance programs presumed a positive welfare effect on poverty. However, mixed effects are visible in empirical studies. This paper is designed to assess the microfinance effect on BRAC borrowers’ poverty at business, household, individual, and security levels. The effect is measured by regressing microfinance on borrowers’ poverty using the Household Economic Portfolio Model (HEPM). The results show that microfinance has a significant positive effect on reducing BRAC borrowers’ poverty in each of the levels reflected by sixteen different items. Hence, this microfinance program appears to be effective as a development tool to alleviate poverty.