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Al-Maliki, Ammar F.H.,Ahmed, Ridha A.,Moustafa, Nader M.,Faleh, Nadhim M. Techno-Press 2020 Advances in computational design Vol.5 No.2
In the present research, dynamic analysis of functionally graded (FG) graphene-reinforced beams under thermal loading has been carried out based on finite element approach. The presented formulation is based on a higher order refined beam element accounting for shear deformations. The graphene-reinforced beam is exposed to transverse periodic mechanical loading. Graphene platelets have three types of dispersion within the structure including uniform-type, linear-type and nonlinear-type. Convergences and validation studies of derived results from finite element approach are also presented. This research shows that the resonance behavior of a nanocomposite beam can be controlled by the GPL content and dispersions. Therefore, it is showed that the dynamical deflections are notably influenced by GPL weight fractions, types of GPL distributions, temperature changes, elastic foundation and harmonic load excitation frequency.
Al-Maliki, Ammar F.H.,Faleh, Nadhim M.,Alasadi, Abbas A. Techno-Press 2019 Structural monitoring and maintenance Vol.6 No.2
In present article, a size-dependent refined thick beam element has been established based upon nonlocal elasticity theory. Next, it is used to explore vibration response of porous metal foam nanobeams on elastic medium. The established beam element introduces ten degrees of freedom. Different porosity distributions called uniform, symmetric and asymmetric will be employed. Herein, introduced thick beam element contains shear deformations without using correction factors. Convergence and verification studies of obtained results from finite element method are also provided. The impacts of nonlocality factor, foundation factors, shear deformation, slenderness ratio, porosity kinds and porosity factor on vibration frequencies of metal foam nano-sized beams have been explored.
Drosophila melanogaster as a Model for Studying Aspergillus fumigatus
( Hadeel Saeed Al-maliki ),( Suceti Martinez ),( Patrick Piszczatowski ),( Joan W. Bennett ) 한국균학회 2017 Mycobiology Vol.45 No.4
Drosophila melanogaster is a useful model organism that offers essential insights into developmental and cellular processes shared with humans, which has been adapted for large scale analysis of medically important microbes and to test the toxicity of heavy metals, industrial solvents and other poisonous substances. We here give a brief review of the use of the Drosophila model in medical mycology, discuss the volatile organic compounds (VOCs) produced by the opportunistic human pathogen, Aspergillus fumigatus, and give a brief summary of what is known about the toxicity of some common fungal VOCs. Further, we discuss the use of VOC detection as an indirect indicator of fungal growth, including for early diagnosis of aspergillosis. Finally, we hypothesize that D. melanogaster has promise for investigating the role of VOCs synthesized by A. fumigatus as possible virulence factors.
Ahmed, Ridha A.,Al-Maliki, Ammar F.H.,Faleh, Nadhim M. Techno-Press 2020 Advances in nano research Vol.8 No.2
This paper studies forced vibrational behavior of porous nanocrystalline silicon nanoshells under radial dynamic loads using strain gradient theory (SGT). This type of material contains many pores inside it and also there are nano-size grains which define the material character. The formulation for nanocrystalline nanoshell is provided by first order shell theory and a numerical approach is used in order to solve nanoshell equations. SGT gives a scale factor related to stiffness hardening provided by nano-grains. For more accurate description of size effects due to nano-grains or nano-pore, their surface energy influences have been introduced. Surface energy of inclusion exhibit extraordinary influence on dynamic response of the nanoshell. Also, dynamic response of the nanoshell is affected by the scale of nano-grain and nano-pore.
Firoz Anwar,Rajbala Singh,Gohar Mushtaq,Abdul Rehman Al-Maliki,Abdullah Sabih,F. A. Al-Abbasi,Aftab Ahmad,Muhammad Afzal,Imran Kazm,Ruqaiyah Kha 대한독성 유전단백체 학회 2015 Molecular & cellular toxicology Vol.11 No.3
Hepatocellular carcinoma (HCC) is the fifth and third most common cause of cancer-related deaths. Erythrosine, a commonly used coloring agent in tablet preparation was studied for its role when supplemented with sub necrotic dose of DENA (n-diethyl nitrosamine) to induced HCC in Wistar rats. Single dose of chemical carcinogen DENA with intraperitoneal injection (20 mg/kg) administered before Erythrosine at a dose 0.014 mg/kg by p.o, DENA treated rats and alone. Exposure of DENA and Erythrosine alters the levels of Serum glutamate oxaloacetate transaminase (SGO T), Serum glutamate pyrophosphate transaminase (SGPT), Alkaline phosphate (ALP), Total Bilirubin (TBR), Blood uric acid, urea, lipid profile and Serum alpha-feto protein (AFP) in Wistar rats, with further alteration in intracellular antioxidant enzyme profile Lipid Per oxidation (LPO), Glutathione Peroxidase (GPx), Melanoaldehyde (MDA), Glutathione Reductase (GR), Catalase (CAT), Glutathione (GSH), Glutathione- S-Transferase (GST), Superoxide Dismutase (SOD) along with Vit. C and Vit. E conc.. Moreover Histopathological examinations of the liver tissue showed marked effect of DENA and Erythrosine exposure on liver structure. The results concluded that Erythrosine used as coloring agent for tablet coating as well as food colorant in India, was found to be an inducer as liver proliferating agent and promoter of HCC.