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Vertically Aligned Silicon Carbide Nanowires/Boron Nitride Cellulose Aerogel Networks Enhanced Thermal Conductivity and electromagnetic Absorbing of Epoxy Composites

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Nano-Micro Letters 2022年第7期14卷 209-227页

作者： Duo Pan Gui Yang hala MAbo-Dief Jingwen Dong Fengmei Su Chuntai Liu Yifan Li Ben Bin Xu Vignesh Murugadoss Nithesh Naik Salah Mel-Bahy Zeinhom Mel-Bahy Minan Huang Zhanhu Guo Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002People’s Republic of China Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon Tyne NE18STUK Integrated Composites Laboratory(ICL) Department of Chemical and Biomolecular EngineeringUniversity of TennesseeKnoxvilleTN 37996USA Advanced Materials Division Engineered Multifunctional Composites(EMC)Nanotech LLCKnoxvilleTN 37934USA College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024People’s Republic of China Department of Mechanical and Manufacturing Engineering Manipal Institute of TechnologyManipal Academy of Higher EducationManipalKarnataka 576104India Department of Chemistry Turabah University CollegeTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Chemistry Al-Azhar UniversityNasr CityCairo 11884Egypt

With the innovation of microelectronics technology, the heat dissipation problem inside the device will face a severe test. In this work, cellulose aerogel(CA) with highly enhanced thermal conductivity(TC) in vertical planes was successfully obtained by constructing a vertically aligned silicon carbide nanowires(SiC NWs)/boron nitride(BN) network via the ice template-assisted strategy. The unique network structure of SiC NWs connected to BN ensures that the TC of the composite in the vertical direction reaches 2.21 W m^(-1) K^(-1) at a low hybrid filler loading of 16.69 wt%, which was increased by 890% compared to pure epoxy(EP). In addition, relying on unique porous network structure of CA, EP-based composite also showed higher TC than other comparative samples in the horizontal direction. Meanwhile, the composite exhibits good electrically insulating with a volume electrical resistivity about 2.35 × 10^(11) Ω cm and displays excellent electromagnetic wave absorption performance with a minimum reflection loss of-21.5 dB and a wide effective absorption bandwidth(ellent multifunctional performances in microelectronic packaging applications.

关键词： Epoxy Ice template Vertical alignment Thermal conductivity Multifunctionality

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Characterization of Amphidinium(Amphidiniales,Dinophyceae)species from the China Sea based on morphological,molecular,and pigment data

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Journal of Oceanology and Limnology 2022年第3期40卷 1191-1219页

作者： Zhaohe LUO Hua ZHANG Qun LI Lei WANG hala F MOHAMED Songhui LÜ Haifeng GU Third Institute of Oceanography Ministry of Natural ResourcesXiamen 361005China Research Center of Harmful Algae and Marine Biology College of Life Science and TechnologyJinan UniversityGuangzhou 510362China Shenzhen Academy of Environmental Science Shenzhen 510008China Botany&Microbiology Department Faculty of ScienceAl-Azhar University(Girls Branch)Cairo 11751Egypt Southern Marine Science and Engineering Guangdong Laboratory Zhuhai 519000China Observation and Research Station of Coastal Wetland Ecosystem in Beibu Gulf Ministry of Natural ResourcesBeihai 536015China

Amphidinium species are amongst the most abundant benthic dinoflagellates in marine intertidal sandy *** of them are able to produce a variety of bioactive compounds that can have both harmful effects and pharmaceutical *** diversity of Amphidinium in shallow waters along the Chinese coast was investigated by isolating single cells from sand,coral,and macroalgal samples collected from 2012 to *** morphologies were subjected to examination using light microscopy(LM)and scanning electron microscopy(SEM).A total of 74 Amphidinium strains were morphologically identified,belonging to 11 species:***,***,***,***,***,***,***,***,***,***,***,as well as an undefined *** last seven species have not been previously reported in Chinese *** carterae subcladesⅠ,Ⅱ,andⅣwere found in the South China Sea,while subcladeⅢwas only found in the Yellow *** body scales were observed on the surface of subcladesⅢ and Ⅳ,supporting the idea that *** might contain several different *** subunit ribosomal RNA(LSU rRNA)sequencesbased phylogeny revealed two groups(GroupsⅠandⅡ)within Amphidinium,which is consistent with the relative position of sulcus(in touch with cingulum or not).In addition,large differences in morphology and molecular phylogeny between ***(the type species of Amphidinium)and other species,suggest that a subdivision of Amphidinium might be *** pigment profiles of all available strains were analyzed by high performance liquid chromatography(HPLC).eleven pigments,including peridinin,diadinoxanthin,diatoxanthin,pheophorbide(and pheophorbide a),antheraxanthin,β-carotene,and four different chlorophylls were *** high pheophorbide/pheophorbide a ratio in Amphidinium implies that it may be a good candidate as a natural source of photosensitizers,a well-known anticancer drug.

关键词： harmful algae benthic-epiphytic dinofl agellate phylogeny geographic distribution pheophorbide photosensitizers

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p53 antibodies,metallothioneins,and oxidative stress markers in chronic ulcerative colitis with dysplasia

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World Journal of Gastroenterology 2011年第19期17卷 2417-2423页

作者： hala E Hamouda Soha S Zakaria Saber A Ismail Mahmoud A Khedr Wael W Mayah Department of Medical Biochemistry Faculty of MedicineTanta University Department of Tropical Medicine Faculty of MedicineTanta University

AIM:To investigate the role of p53 antibodies (p53Abs),metallothioneins (MTs) and oxidative stress markers in the early detection of dysplasia in chronic ulcerative colitis (UC).METHODS:The study included 30 UC patients,15 without dysplasia (group Ⅱ) and 15 with dysplasia (group Ⅲ),in addition to 15 healthy volunteers (group Ⅰ,control subjects).The enzyme-linked immunosorbent assay technique was used to measure serum p53Abs and MTs,while advanced oxidation protein products (AOPPs),and reduced glutathione (GSH) levels were measured by spectrophotometric method in all ***:In group Ⅱ and group Ⅲ compared to group Ⅰ,there were significant increases in serum levels of AOPPs (145.94 ± 29.86 μmol/L and 192.21 ± 46.71 μmol/L vs 128.95 ± 3.06 μmol/L,P ely),MTs (8.18 ± 0.35 μg/mL and 9.20 ± 0.58 μg/mL vs 6.12 ± 0.25 μg/mL,P ely),and p53Abs (20.19 ± 3.20 U/mL and 34.66 ± 1.34 U/mL vs 9.42 ± 1.64 U/mL,P ely).There were significantly higher levels of AOPPs (P 0.096).In contrast,GSH levels showed a significant decrease in both patients' groups (1.87 ± 0.02 μmol/mL and 1.37 ± 0.09 μmol/mL vs 2.49 ± 0.10 μmol/mL,P ely) compared with group Ⅰ,and the levels were significantly lower in group Ⅲ than group Ⅱ (P elation between AOPPs and both MTs (r=0.678,P elation between AOPPs and GSH (r =-0.385,P ellular damage play an important role in the pathogenesis of chronic UC and the associated carci

关键词： Ulcerative colitis Advanced oxidation protein products Reduced glutathione Metallothionein

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Evolution of stellated gold nanoparticles:New conceptual insights into controlling the surface processes

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Nano Research 2022年第2期15卷 1260-1268页

作者： Gurvinder Singh Hesamodin Jami Pooria Lesani Shubhayan B.hattacharya Yogambha Ramaswamy Prem BBisht hala Zreiqat ARC Centre for Innovative BioEngineering Tissue Engineering and Biomaterials Research UnitSydney Nano Institute and the School oj Biomedical EngineeringThe University of SydneyNSW 2008Australia Department of Physics Indian Institute of Technology MadrasChennaiIndia

Understanding the surface processes(deposition and surface diffusion)that occur at or close to the surface of growing nanoparticles is important for fabricating reproducibly stellated or branched gold nanoparticles with precise control over arm length and spatial orientation of arms around the *** employing a simple seed-mediated strategy,we investigate the key synthetic variables for precise tuning of in situ surface processes(competition between the deposition and surface diffusion).These variables include the reduction rate of a reaction,the packing density of molecules/ions on the high surface energy facets,and *** a result,the thermodynamically stabilized nanoparticles(cuboctahedron and truncated cube)and kinetic products(cube,concave cube,octapod,stellated octahedron,and rhombic dodecahedron)in different sizes with high quantitative shape yield(>80%)can be obtained depending on the reduction rate of reaction and the packing density of molecules/*** computer simulation,we studied the stability of stellated(branched structure)and non-stellated(non-branched structure)gold nanoparticles at high *** construct a morphology phase diagram by varying different synthetic parameters,illustrating the formation of both stellated and non-stellated gold nanoparticles in a range of reaction *** stellated gold nanoparticles display shape-dependent optical properties and can be self-assembled into highly ordered superstructures to achieve an enhanced plasmonic *** strategy can be applied to other metal systems,allowing for the rational design of advanced new stellated metal nanoparticles with fascinating symmetry dependent plasmonic,catalytic,and electronic properties for technological applications.

关键词： surface diffusion shape control stellated nanoparticles self-assembly nanoplasmonics octapod stellated octahedron

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INVERSION OF THE BREMMER SERIES

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Journal of Computational Mathematics 2017年第5期35卷 586-599页

作者： hala A.H. Shehadeh Alison E. Malcolm John C. Schotland Department of Mathematics and Statistics James Madison University Harrisonburg VA 22801 Earth Sciences Department Memorial University of Newfoundland St John's Canada Department of Mathematics and Department of Physics University of Michigan Ann Arbor MI 48109 USA

We consider the inverse backscattering problem for scalar waves in one dimension. We analyze the convergence of the inverse Bremmer series in this context and study its use in numerical simulations.

关键词： Inverse scattering.

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Cigarette use attitudes and effects of acculturation among Arab immigrants in USA: A preliminary study

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Health 2012年第10期4卷 785-793页

作者： Linda Haddad Omar el-Shahawy Kawkab Shishani hala Madanat Sukaina Alzyoud Department of Family and Community Health & Institute for Drug and Alcohol Studies Faculty of Nursing Virginia Department of Social and Behavioral Health School of Medicine Virginia Commonwealth University Richmond USA Graduate School of Public Health San Diego State University San Diego USA Hashemite University School of Nursing Zarqa Jordan Washington State University Spokane Washington USA

The purpose of this study is to explore cigarette use patterns, which include current use, beliefs, attitudes, attempts to quit, and acculturation, among Arab immigrants. A sample of self-identified Arab immigrants (221) living in the Richmond, VA metropolitan area was recruited from Middle Eastern groceries, restaurants/lounges, and faith and charitable organizations. Men in this sample had higher rates of cigarette smoking (67.6%) than the rest of the general adult US population. Many smokers in the study had the desire to quit and had made attempts to quit. Further analysis of acculturation in relation to the risk of not considering quitting was performed using logistic regression. The older an individual was when he/she moved to the US (OR = 0.93, CI: 0.87, 0.98) and the more time an individual had spent in the US (OR = 0.93, CI: 0.88, 0.98) contributed significantly to the least number of quit attempts. Further random sampling and study is needed to confirm the high prevalence of tobacco use among this minority group.

关键词： Arab Immigrants Tobacco Smoking Acculturation Minority Smoking

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Novel Unilateral Dental Expander Appliance(UDEX):A Compound Innovative Materials

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Computers, Materials & Continua 2021年第9期68卷 3499-3511页

作者： Hasan Sabah Hasan Abdallah AAbdallah Imran Khan hala Sadek Alosman Ayshan Kolemen Bilal Alhayani Department of Orthodontic Khanzad Teaching CenterGeneral Directorate of Hawler-Ministry of HealthErbilIraq Department of Industrial Engineering German Jordanian UniversityAmmanJordan Department of electrical Engineering University of Engineering and TechnologyPeshawarPakistan Department of Orthodontics Near East UniversityNicosiaNorth CYPRUSTurkey Orthodontic Department Al-Mustaqbal University CollegeBabelIraq Department of electronics and communication Yildiz Technical UniversityTurkey

True unilateral posterior crossbite in adults is a challenging malocclusion to treat,especially when we need to correct cross-arch segments with unwanted effects on non-cross *** expansion methods are expected to have some shortcomings;the Unilateral dental expander appliance used to restore unilateral cross bite dental arch is an uncommon appliance;for this,a designed new device is *** paper aimed to invite a new unilateral dental expander appliance(UDEX)to treat unilateral dental posterior crossbite in adults using available dental material,easy to use and handle,well tolerated by the patient,and biocompatible with oral *** could find that in all dental markets and dental clinics—an eighteen-year-old female with bilateral crossbite and upper and lower dental arch *** active orthodontic treatment,a quad-helix expander had broken from one side at soldering between band and wire *** patient did not show up to the clinic for a while due to COVID 19 pandemic lockdown,leading to a true unilateral crossbite at the dental arch’s upper left side,especially at the molar premolars *** unilateral cross bite was treated using a new specially designed expanded appliance as a unilateral posterior cross bite dental maxillary *** a result of this study,orthodontic treatment was finished within(15)months,much less than *** obtained Class I molar and canine relationships with uncrossed dental arches in both upper arch sides,proper overbite and overjet with well-leveled and aligned teeth as it confirmed by clinical examination and radiographic images(OPG Orthopantomogram)and cephalometric radiograph(WebCeph analysis digitalized computer program).Conclude from that,the newly designed unilateral dental expander(UDEX)is proven to be useful for treating real unilateral posterior crossbites as single molar or premolar tooth and multiple joint unilateral crossed posterior ***,it could easily modify it fo

关键词： Unilateral crossbite dental material acrylic pads wire bending expander

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Apheresis:A cell-based therapeutic tool for the inflammatory bowel disease

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World Journal of Clinical Cases 2022年第21期10卷 7195-7208页

作者： Farah Yasmin hala Najeeb Unaiza Naeem Abdul Moeed Thoyaja Koritala Salim Surani Department of Medicine DOW University of Health SciencesKarachi 74200Pakistan Department of Medicine Mayo ClinicRochesterMN 55902United States Department of Medicine Texas A&M UniversityCollege StationTexas 77843United States Department of Anaesthesiology Mayo ClinicRochesterMN 55902United States

Inflammatory Bowel Disease(IBD)is a hallmark of leukocyte infiltration,followed by the release of cytokines and *** progression to Ulcerative Colitis(UC)or Crohn’s Disease(CD)remained largely *** genetic and environmental factors disrupt enteral bacteria in the gut,which hampers the intestinal repairing capability of damaged *** practiced pharmacological therapies include 5-aminosalicylic acid with corticosteroids and tumor necrosis factor(TNF)-α.New interventions such as CDP571 and TNF-blocking RDP58 report the loss of patient *** review discusses the non-pharmacologic selective granulocyte–monocyte-apheresis(GMA)and leukocytapheresis(LCAP)that have been proposed as treatment modalities that reduce ***,an extracorporeal vein-to-vein technique,presents a strong safety profile case for its use as a viable therapeutic option compared to GMA's conventional medication safety *** reported minimal to no side effects in the pediatric population and pregnant *** studies report the efficacious nature of GMA in UC patients,whereas data on CD patients is *** benefits outweigh the risks and are emerging as a favored nonpharmacological treatment *** the contrary,LCAP uses a general extracorporeal treatment that entraps leukocytes and suppresses cytokine *** has been deemed more efficacious than conventional drug treatments,the former causing better disease remission,and *** with UC/CD secondary to complications have responded well to the *** effects of the procedure have remained mild to moderate,and there is little evidence of any severe adverse event occurring in most age *** decreases the dependence on steroids and immunosuppressive therapies for *** review will discuss the role of GMA and LCAP.

关键词： Inflammatory bowel disease Apheresis Granulocyte-monocyte-apheresis Leukocytapheresis TNF-α Ulcerative colitis Crohn’s disease

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An Eco-Friendly Synthesis of Heterocyclic Moieties Condensed with Pyrazole System under Green Conditions and Their Biological Activity

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Green and Sustainable Chemistry 2016年第2期6卷 88-100页

作者： Mohamed A. el-Borai hala F. Rizk Mohamed R. Sadek Mai M. el-Keiy Department of Chemistry Faculty of Science Tanta University Tanta Egypt

The efficient, facile and green synthesis of 4-bromo pyrazolone by using N-bromo saccharine as valuable green reagent encouraged us to prepare some new fused heterocycles as furopyrazole, pyranopyrazole, imidazopyrazole, pyrazolothiazole, pyrazol thiazolopyrimidine, pyrazolothiazine, oxathinopyrazole, pyrazolobenzooxazine, and pyrazoloquinoxaline. The synthesis was carried out by a basic condensation of bromo pyrazolone 2 and a suitable reagent in a one-pot reaction using chitosan as a green basic catalyst. The reactions were carried out by microwave irradiation technique as a green source of energy as well as the conventional heating. The antioxidant activity of the prepared compounds was studied using 1,1-phenyl-2-picrylhydrazyl (DPPH) assay and their antibacterial activity against Gram-positive, Gram-negative bacteria and antifungal activity was evaluated.

关键词： 4-Bromo Pyrazolone N-Bromo Saccharine Chitosan Microwave Irradiation DPPH

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Magnetically separable and visible light-active Ag/NiCo2O4 nanorods prepared by a simple route for superior photodegradation of atrazine in water

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Progress in Natural Science:Materials International 2020年第2期30卷 160-167页

作者： Ahmed Shawky Maha Alhaddad R.M.Mohamed Nasser S.Awwad hala A.Ibrahium Nanomaterials and Nanotechnology Department Advanced Materials DivisionCentral Metallurgical R&D Institute(CMRDI) P.O.Box 87 Helwan Department of Mechanical Engineering School of EngineeringThe University of Tokyo Chemistry Department Faculty of ScienceKing Abdulaziz University Research Centre for Advanced Materials Science (RCAMS) King Khalid University Department of Biology Nuclear Materials Authority

Atrazine(ATZ) is a known herbicide used in agriculture and caused many concerns according to its ***,we have prepared NiCo2O4nanorods that can work as a photocatalyst under visible light exposure by Ag loading through a simple *** characterizations revealed the role of Ag for improving the structural,optical and optoelectronic properties of the produced *** Ag loading with 5 wt% confirms the minimization of the bandgap from 3.6 down to 2.57 eV with enhanced visible light absorption and sustaining the magnetic *** Ag/NiCo2O4nanorods showed a superior photodegradation of ATZ within 20 min at2.0 g L-1with excellent *** enhancement of the photocatalytic activity is referred to the local surface plasmon resonance of Ag-loaded *** reduces the electron-hole recombination and outperforms the unloaded *** work is highlighting the application of magnetically separable spinel photocatalysts for the removal of herbicides and water remediation.

关键词： Spinel photocatalyst Visible light Photodegradation Atrazine Magnetic separation

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