99 research outputs found
Biomass‐Derived Materials for Interface Engineering in Organic/Perovskite Photovoltaic and Light‐Emitting Devices
No full textCompared to their inorganic counterparts, organic optoelectronic devices receive considerable attention due to their lower cost, mechanical flexibility, bandgap engineering, and solution processability. In particular, achieving sustainability in solar cells and light emitting devices is an important milestone in the development of green electronics. This has facilitated a close collaboration between different technological fields, opening new ways for low-cost production and application of biomaterials. Recently, biomass materials, mainly derived from plants, animals and microorganisms, have emerged as effective candidates to modify the interfacial properties, and thus enhance the performance, lifetime, and stability of organic solar cells (OSCs), perovskite solar cells (PVSCs), and organic light-emitting diodes (OLEDs). Compared to the commonly used synthetic interfacial materials, the use of biomass interlayer materials (BIMs) is still in its embryonic stages; however, their nontoxicity, biorelevance, sustainability, special proton conductivity, and rich functional groups are stimulating researchers around the globe to fabricate novel devices with improved efficiency. Herein, a comprehensive review of BIMs and their importance in next-generation optoelectronic devices is provided. A well-targeted comparison between the electrical and physical properties of different BIMs is provided, and how such characteristics improve the performance of three key optoelectronic devices: OSCs, PVSCs and OLEDs, is discussed
Antitumor activity of zinc oxide nanoparticles fused with green extract of Nigella sativa
No full textZinc oxide nanoparticles have attracted considerable attention as promising candidates in various fields, especially in the realm of medical science. In the present experimental study, the co-precipitation method was used to synthesize chemical and green ZnO NPs. Zinc nitrate Zn (NO3)2 served as the main precursor, while sodium hydroxide (NaOH) and Nigella sativa extract were used to synthesize chemical and green Zinc Oxide nanoparticle, respectively. Then, the chemical and green fabricated Zinc Oxide nanoparticles were subjected to annealing at 400 °C and 550 °C temperature for a period of 2 hours respectively. After final product obtained, various characterization techniques were employed to validate the crystal structure, morphology, optical properties, and functional groups (e.g., OH stretching group, ZnO mode, etc.) via XRD, SEM, UV–Vis, and FTIR analysis. The Scherer formula was applied to calculate the average crystalline size of green and chemical fabricated Zinc Oxide nanoparticles, which confirmed the presence of the hexagonal wurtzite phase. Moreover, the fabricated products were finally tested for anticancer activity using MTT assay by optimizing cellular absorption against concentration. The MTT assay confirmed significant antitumor/anticancer efficacy against HepG2 cancer cells for both green actively and chemical fabricated Zinc Oxide nanoparticles superficial. The current development of this novel experimental strategy is anticipated to make a substantial contribution in the field of biomedical sciences, particularly in anticancer activity
Intoxication and self-defence : a comparative study of principles of English law and Shari'ah
No full textThe study is based upon an analysis of the general principles of criminal liability in English law and Shari 'ah. It is hoped that it may provide a valid basis for discussion of the future development of criminal law.
The relationship between law and society is an organic one and this relationship in Shari'ah is based on revelatory text of precepts, law, and admonitions. Shari'ah is an
essential part of faith of every Muslim; a sound knowledge of its principles not only gives him a sense of inner fulfilment but enables him to order his life according to the dictates of his religion. On the other hand, in English law, religious beliefs and private morality might be viewed as not a matter for law. Religion is in that context generally conceived as a spiritual sphere of supra-human connotation distinct from law, which is basically a secular concern.
Both the systems of law under consideration are different in their sources and nature. English law, being a positive law, finds its source in legislation and other recognised
sources. Shari 'ah is a divine ordinance imposed upon people without having a freedom of choice and it has its roots in its primary sources, the Holy Qur'an, and the Sunnah.
However, the revelatory nature of Shari'ah does not render it entirely inflexible and immutable. The finality of authoritative legal texts is confined only to a limited number of injunctions in the primary sources. The secondary sources provide flexibility to meet the changing requirements of society. A legal system should strike a fair balance between flexibility and inflexibility of legal rules. A very flexible system of law may lead to inconsistencies, illogicalities and at the same time may be subject to abuse by judges while a rigid system, which leaves no room for judicial discretion is likely to
lead to injustice in certain cases. It is submitted that the very flexible nature of English law has left it full of inconsistencies and illogicalities, despite the appropriate use of judicial discretion.
The research offers a general view of modern thinking about the theoretical foundations and methodology of Shari'ah Shari 'ah recognises a variety of sources and methods from which a rule of law might be derived. Part-I of the thesis discusses the evolving principles of Islamic jurisprudence from their rudimentary sources. The specific relationship between socio-religious reality and the production of theoretical legal discourse is illustrated in Part-11 and III while dealing with the problem of intoxication
and private defence in society. It suggests that Shari'ah provides a framework in which the complex and sometimes competing needs of an individual and society can be fairly
apportioned.
The research will demonstrate that there is a well developed system of criminal law in Shari'ah that can be compared with the most developed and civilised criminal law of the contemporary world, for example, English criminal law. In order to compare the compatibility of both the legal systems, the approaches of both towards the problems of intoxication and self-defence have been taken as a parameter. Though Shari 'ah provisions seem to be predominantly prescriptive as compared to English criminal law, the comparison will show that it can provide practical solutions to problems faced by human society of any age. Shari 'ah being a revealed law is proactive in its nature. It takes action to cause changes and not only react to a change when it happens. This particular feature can be felt while dealing with the problem of intoxication. English
criminal law, on the other hand, being a positive law bears the characteristics of a reactive law. It reacts to events or changes rather than acting first to cause change or
prevent something. Another major difference between the two legal systems might be that English criminal law has passed through many evolutionary phases and reached at the present stage through the efforts of the political power and the state; whereas, Muslim states and governments throughout the centuries neither had a hand in the development of Islamic jurisprudence nor in the training and certification of jurists or jurisconsults whose task it was to formulate the law.
History suggests that using the combined forces of religion, morality and law Shari'ah has effectively eradicated social evils and created a peaceful environment for human coexistence, where every one can enjoy his rights without a fear of infringement by the others. In cases of infringement of such rights, the offender shall be liable to severe punishments. The principles of criminal liability are on a par with the corresponding principles of the English criminal law. While protecting the rights of the victim of the crime, Shari'ah does not ignore the rights of the offender for fair trail, impartial justice and liability for punishment proportional to the offence committed by him. At the same time it recognises excuse and justification defences under appropriate circumstances, as
it will be evident while comparing the defences of intoxication and self-defence with the same in English criminal law.
The study reveals that there are similarities and differences between English law and Shari'ah when considering the issue of crime and criminal liability. However, this may be considered as normal phenomenon of comparing any two different legal systems. The differences can be attributed to their sources, origin, history and nature of the social values to be protected. Similarities can be ascribed to zeal for social justice and stability.
The study of differences and similarities will provide an opportunity to illuminate our understanding of law and the process of its development. As both the systems have their
own methodology to tackle legal issues, a different approach to the similar problem will provide a fresh insight leading to revitalised solutions. It will also be helpful to understand the methodology and the legal reasoning of both the systems leading towards a better understanding of law in general and at the same time providing efficient means for improvement
Collected Papers (on Physics, Artificial Intelligence, Health Issues, Decision Making, Economics, Statistics), Volume XI
No full textThis eleventh volume of Collected Papers includes 90 papers comprising 988 pages on Physics, Artificial Intelligence, Health Issues, Decision Making, Economics, Statistics, written between 2001-2022 by the author alone or in collaboration with the following 84 co-authors (alphabetically ordered) from 19 countries: Abhijit Saha, Abu Sufian, Jack Allen, Shahbaz Ali, Ali Safaa Sadiq, Aliya Fahmi, Atiqa Fakhar, Atiqa Firdous, Sukanto Bhattacharya, Robert N. Boyd, Victor Chang, Victor Christianto, V. Christy, Dao The Son, Debjit Dutta, Azeddine Elhassouny, Fazal Ghani, Fazli Amin, Anirudha Ghosha, Nasruddin Hassan, Hoang Viet Long, Jhulaneswar Baidya, Jin Kim, Jun Ye, Darjan Karabašević, Vasilios N. Katsikis, Ieva Meidutė-Kavaliauskienė, F. Kaymarm, Nour Eldeen M. Khalifa, Madad Khan, Qaisar Khan, M. Khoshnevisan, Kifayat Ullah,, Volodymyr Krasnoholovets, Mukesh Kumar, Le Hoang Son, Luong Thi Hong Lan, Tahir Mahmood, Mahmoud Ismail, Mohamed Abdel-Basset, Siti Nurul Fitriah Mohamad, Mohamed Loey, Mai Mohamed, K. Mohana, Kalyan Mondal, Muhammad Gulfam, Muhammad Khalid Mahmood, Muhammad Jamil, Muhammad Yaqub Khan, Muhammad Riaz, Nguyen Dinh Hoa, Cu Nguyen Giap, Nguyen Tho Thong, Peide Liu, Pham Huy Thong, Gabrijela Popović, Surapati Pramanik, Dmitri Rabounski, Roslan Hasni, Rumi Roy, Tapan Kumar Roy, Said Broumi, Saleem Abdullah, Muzafer Saračević, Ganeshsree Selvachandran, Shariful Alam, Shyamal Dalapati, Housila P. Singh, R. Singh, Rajesh Singh, Predrag S. Stanimirović, Kasan Susilo, Dragiša Stanujkić, Alexandra Şandru, Ovidiu Ilie Şandru, Zenonas Turskis, Yunita Umniyati, Alptekin Ulutaș, Maikel Yelandi Leyva Vázquez, Binyamin Yusoff, Edmundas Kazimieras Zavadskas, Zhao Loon Wang.
Indium Antimonide Nanowires:Synthesis and Properties
No full textThis article summarizes some of the critical features of pure indium antimonide nanowires (InSb NWs) growth and their potential applications in the industry. In the first section, historical studies on the growth of InSb NWs have been presented, while in the second part, a comprehensive overview of the various synthesis techniques is demonstrated briefly. The major emphasis of current review is vapor phase deposition of NWs by manifold techniques. In addition, author review various protocols and methodologies employed to generate NWs from diverse material systems via self-organized fabrication procedures comprising chemical vapor deposition, annealing in reactive atmosphere, evaporation of InSb, molecular/chemical beam epitaxy, solution-based techniques, and top-down fabrication method. The benefits and ill effects of the gold and self-catalyzed materials for the growth of NWs are explained at length. Afterward, in the next part, four thermodynamic characteristics of NW growth criterion concerning the expansion of NWs, growth velocity, Gibbs-Thomson effect, and growth model were expounded and discussed concisely. Recent progress in device fabrications is explained in the third part, in which the electrical and optical properties of InSb NWs were reviewed by considering the effects of conductivity which are diameter dependent and the applications of NWs in the fabrications of field-effect transistors, quantum devices, thermoelectrics, and detectors
إسهام الشيخ أصغر علي الروحي في الرثاء: دراسة تحليلية
No full textAsghar Ali Roohi is commonly known for his services and involvement in the field of Arabic Litrature. He made huge literary contribution by merging Arabic language in his works along with numerous kinds of literature. He is an author of several books written on many topics of Islamic sciences and poetry like Hamd, Naat and Elegy (Martia). This article predominately delivers contribution of Asghar Ali Roohi, a prestifious person of Pakistan, his life and services particularly Arabic Elegy writing. He wrote elegy about Khwaja Muhammad Ghous Chishti, Qazi Hameed ud Din Lahori, his teachers and friends
Photodynamic effects of zinc oxide nanowires in skin cancer and fibroblast
No full textCytotoxic effects of zinc oxide (ZnO) nanomaterials, individual and conjugated with a photosensitizer (protoporphyrin IX), were studied in the presence and absence of ultraviolet light exposure (240 nm of light wavelength for a very short time exposure) in cell cultures of human normal and cancerous skin models. Zinc Oxide nanowires (ZnO NWs) were grown on the capillary tip and conjugated with protoporphyrin IX (PpIX). This coated tip was used as tool/pointer for intracellular drug delivery protocol in suggested normal as well as carcinogenic cellular models. After true delivery of optimal drug, the labelled biological model was irradiated with UV-A, which led to a loss of mitochondrial membrane potential, as tested by neutral red assay (NRA).</p
Investigation of optical, electrical and magnetic properties of hematite α-Fe2O3 nanoparticles via sol-gel and co-precipitation method
No full textHematite (α-Fe2O3) nanoparticles were synthesized using co-precipitation and sol–gel methods. X-ray diffraction (XRD) technique was employed to structural properties of the synthesized α-Fe2O3 nanoparticles and SEM(scanning electron microscopy) was used to analyze the morphological structure. The crystallite size is determined Sample-A (33 nm) and Sample-B (29 nm) by Scherer formula, while Volume of unit cell is measured 301.8 x106 pm3 and 301.8 x106 pm3 respectively. The X-ray density is found in the Sample-A 5.27 (g/cm3) and Sample-B 5.26 (g/cm3). The optical band gap energy measured 2.4–2.6 eV, calculated by the Tauc plot with the optical absorption data. The electrical characteristics of the samples were examined by using two probe methods and the possible impact of temperature on the electrical properties of α-Fe2O3 was investigated. Dielectric analysis reveals an inverse relationship between the permittivity of α-Fe2O3 samples and frequency that fulfills the Maxwell Wagner Model. The magnetic parameters were observed Ms = 9.29 emu, 1.72 emu and coercivity Hc = 1404(G) as well as Hc = 1040(G). The observed values of these factors indicate that the materials can be employed in a variety of applications such as catalysis, sensors and water purification.</p
Conventional Medicine in the Treatment of Different Diseases as a Complementary and Alternative Medicine
No full textTraditional medicine is still the only treatment in many rural areas especially the rural communities of east. Due to limited access to modern medicine, local people use medicinal plants to treat most diseases. Some herbs contain powerful contents and must be treated with the same precautionary care as in the case of drug, we do. In fact, a lot of drugs are basically based on artificial verities of natural composite in plants. For example, the heart drug Digitalis comes from a foxglove plant. Some drugs are single active substance derived from botanical sources. Herbalists believe that if the active ingredient is isolated from other parts of the plant, its action may be lost or its safety may be reduced. E.g, salicylic acid is present in a plant of meadowsweet which is used for aspirin production. Aspirin may cause bleeding in the gastric mucosa, but meadowsweet contains some other compounds naturally that interfere with the stimulation of salicylic acid. According to some practitioners, the effect of whole plant is greater than its parts individually. Critics believe that the nature of the herbs makes itself difficult to administer of such active ingredients. Herbs contain active ingredients, Mostly of them have unknown ingredients. As with other prescription drugs, herbs should always be prescribed by a qualified doctor
Silver-chitosan nanobiocomposite as urea biosensor
No full textSilver nanoparticles (Ag NPs) were synthesized by aqueous chemical growth technique. The above mentioned synthesized materials were characterized by applying scanning electron microscope (SEM) and X-ray diffraction for confirmation of morphological analysis, compositional purity, and crystalline property and emission characteristics as well. In order to fabricate the urea biosensor (potentiometric), a solution of deionized water and chitosan was prepared having Ag NPs. The said solution was dropped on the glass fiber filter having diameter of 2 cm. A wire of copper having thickness of approximately 500 pm was used for the voltage signal to pull out from the said working nanoparticles (NPs). To improve the strength, sensitivity and the quality of the potentiometric urea biosensor, a specific functional surface of Ag NPs was attained by electrostatic restrained of an enzyme (urease) onto the chitosan-Ag (a nanobiocomposite). The potentiometric reaction was measured via electrochemical detection technique. The potentiometric urea biosensor illustrates significant sensibility at room temperature with approximate to 42 mV as per span. Furthermore, the said biosensor showed an appropriate stable response within 7 sec.</p
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