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QUALITATIVE ANALYSIS OF ABR-FRACTIONAL VOLTERRA-FREDHOLM SYSTEM
Shakir M. Atshan,Ahmed A. Hamoud 경남대학교 기초과학연구소 2024 Nonlinear Functional Analysis and Applications Vol.29 No.1
In this work, we explore the existence and uniqueness results for a class of boundary value issues for implicit Volterra-Fredholm nonlinear integro-differential equations (IDEs) with Atangana-Baleanu-Riemann fractional (ABR-fractional) that have non-instantaneous multi-point fractional boundary conditions. The findings are supported by Krasnoselskii's fixed point theorem, Gronwall-Bellman inequality, and the Banach contraction principle. Finally, a demonstrative example is provided to support our key findings.
Shakir, I.,Ali, Z.,Kang, D.J. Elsevier Sequoia 2014 JOURNAL OF ALLOYS AND COMPOUNDS Vol.617 No.-
The synthesis of a photocatalyst that is highly active under visible light is one of the most challenging tasks for solar-energy utilization. Here we report a multilayer assembly of gold nanoparticles and graphene that offers dual functionality to efficiently harness visible photons. Firstly, plasmonic resonances by gold nanoparticles are utilized for visible light scattering; secondly the electron scavenging reaction is enhanced by the gold nanoparticles trapping the electrons that are injected from the dye into the graphene. Moreover, the structure is in the form of a thin film, which demonstrates the potential for easy handling and recycling. Precise control over light harvesting and the photocatalytic response is achieved by controlling the number of layers.
Shakir Ali,Amena Mahmood,Indusmita Routray,Tijjani Salihu Shinkafi,Kazim Sahin,Omer Kucuk 대한암예방학회 2014 Journal of cancer prevention Vol.19 No.4
Background:Dried flower bud of Syzygium aromaticum (clove) is rich in eugenol, an antioxidant and antiinflammatory compound thatcan protect liver against injury. Clove, besides eugenol, also contains other pharmacologically active phytochemicals such as β-sitosteroland ascorbic acid. This study reports the effect of eugenol-rich fraction (ERF) of clove on liver cirrhosis induced by thioacetamide. Methods:Cirrhosis of the liver, which predisposes to hepatocellular carcinoma, was induced by administering thioacetamide (0.03%)in drinking water for 16 weeks. Cirrhotic animals were divided into two groups; the treated group was administered ERF for 9 weeks,one week after discontinuation of thioacetamide, while the other group received normal saline for a similar duration of time. Results:The treatment with ERF, as determined by histopathology and through a battery of biochemical markers of hepatic injury, oxidativestress and drug metabolizing enzymes, significantly ameliorated the signs of liver cirrhosis. It lowered the elevated levels ofalkalinephosphatase, γ-glutamyl transferase and other biochemical changes in liver cirrhosis. Histopathology of the liver corroborated the effectof ERF with biochemical findings. ERF treatment further inhibited cell proliferation, as demonstrated by reduced [3H]-thymidine uptake. Conclusions:Data provide evidence supporting the protective action of ERF on liver cirrhosis. The study assumes significance becausecirrhosis predisposes the liver to cancer, which is characterized by abnormal cell proliferation. ERF in this study is reportedto inhibithepatic cell proliferation and at the same time decrease oxidative stress, which might be the mechanism of protection against liver cirrhosis.
Design of an Assistance Robot for Patients Suffering from Paraplegia
Shakir Khan,Muhammad Fahad Zeb,Nouman Ghafoor,Saad Jamshed,Muhammad Raheel Afzal,Amre Eizad 제어로봇시스템학회 2015 제어로봇시스템학회 국제학술대회 논문집 Vol.2015 No.10
The people with disabled lower limbs find it difficult to lead an independent life and the lack of upper body exercise may lead to disuse ailment. Various studies have shown that both children and adults benefit substantially from access to a means of independent mobility. Independent mobility is a dream for every person with some or the other physical disability especially in the case of paraplegics. In the research presented in this paper, an assistance platform was developed to help the paraplegic and elderly people by providing the ability to stand-up and move about. Virtual prototype technology was used to make the design and development of the robot more efficient using Solid-works™. The device developed may be used for rehabilitation of people recovering from extended periods of limb disuse and for paraplegic patients. Although some commercialized training machines and some developed lower-limb rehabilitation robots can perform adequate motion functions during lower limb training programs but the weight, size and cost of these devices limits their possibilities of use. In contrast, the proposed design has the potential to be used among the middle socio-economic class as a product in daily household works of the paraplegic patients.
Shakir, Imran,Shahid, Muhammad,Kang, Dae Joon Royal Society of Chemistry 2010 Chemical communications Vol.46 No.24
<P>Single crystalline MoO<SUB>3</SUB> and Cu<SUB>0.33</SUB>MoO<SUB>3</SUB> nanorods have been synthesized in large quantities <I>via</I> hydrothermal route, which exhibit unprecedented photocatalytic performance for the decomposition of Toluidine blue “O” (TBO) and chlorobenzene both under visible and UV light irradiation.</P> <P>Graphic Abstract</P><P>Single crystalline MoO<SUB>3</SUB> and Cu<SUB>0.33</SUB>MoO<SUB>3</SUB> nanorods have been synthesized in large quantities <I>via</I> hydrothermal route, which exhibit unprecedented photocatalytic performance for the decomposition of Toluidine blue “O” (TBO) and chlorobenzene both under visible and UV light irradiation. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c000003e'> </P>
Shakir Sameer,Card Elizabeth B.,Kimia Rotem,Greives Matthew R.,Nguyen Phuong D. 대한성형외과학회 2022 Archives of Plastic Surgery Vol.49 No.2
Management of traumatic skull base fractures and associated complications pose a unique reconstructive challenge. The goals of skull base reconstruction include structural support for the brain and orbit, separation of the central nervous system from the aerodigestive tract, volume to decrease dead space, and restoration of the three-dimensional appearance of the face and cranium with bone and soft tissues. An open bicoronal approach is the most commonly used technique for craniofacial disassembly of the bifrontal region, with evacuation of intracranial hemorrhage and dural repair performed prior to reconstruction. Depending on the defect size and underlying patient and operative factors, reconstruction may involve bony reconstruction using autografts, allografts, or prosthetics in addition to soft tissue reconstruction using vascularized local or distant tissues. The vast majority of traumatic anterior cranial fossa (ACF) injuries resulting in smaller defects of the cranial base itself can be successfully reconstructed using local pedicled pericranial or galeal flaps. Compared with historical nonvascularized ACF reconstructive options, vascularized reconstruction using pericranial and/or galeal flaps has decreased the rate of cerebrospinal fluid (CSF) leak from 25 to 6.5%. We review the existing literature on this uncommon entity and present our case series of n = 6 patients undergoing traumatic reconstruction of the ACF at an urban Level 1 trauma center from 2016 to 2018. There were no postoperative CSF leaks, mucoceles, episodes of meningitis, or deaths during the study follow-up period. In conclusion, use of pericranial, galeal, and free flaps, as indicated, can provide reliable and durable reconstruction of a wide variety of injuries.