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Acta Metallurgica Sinica(English Letters) 2014年第4期27卷 557-562页

作者： V.Revathi S.Dinesh Kumar P.chithra Lekha V.Subramanian T.S.Natarajan c.muthamizhchelvan New Horizon college of Engineering Bangalore 560103India Microwave Laboratory Department of PhysicsIIT MadrasChennai 600036India SRM University KattankulathurChennai 603203India

The sub-micron（of the order of 150 nm） thick core–shell composite fibers of magnesium ferrite-polyvinylidene fluoride are prepared by *** loading of magnesium ferrite is varied from 1 to 10 wt%.The study results by X-ray diffraction,scanning electron microscope,and infra-red spectroscopy indicate the formation of core–shell structure and an enhancement in the amount of b-phase compared to a-phase in the polyvinylidene *** particle size of the magnesium ferrite in the fiber is evaluated to be 30 *** low frequency dielectric studies indicate that the addition of the magnesium ferrite increases the polarization resulting in the increase in the dielectric constant but decreases the dielectric *** magnetization measurements indicate an increased value of coercivity compared to bulk due to the nano-size of the magnesium *** microwave absorption at the ferromagnetic resonance increases with the increase in the concentration of magnesium *** resonance field is found to vary with the loading of MFO.

关键词： Electrospinning Polymer composites Dielectric properties Magnetic properties X-ray diffraction(XRD) Microwave absorption

One-step fabrication of ultrathin layered 1T@2H phase MoS2 with high catalytic activity based counter electrode for photovoltaic devices

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Journal of Materials Science & Technology 2020年第16期47卷 94-101页

作者： K.Silambarasan J.Archana S.Harish M.Navaneethan R.Sankar Ganesh S.Ponnusamy c.muthamizhchelvan K.Hara Functional Materials and Energy Devices Laboratory Department of Physics and NanotechnologySRM Institute of Science and TechnologyKattankulathur603203India Nanotechnology Research center(NRc) Faculty of Engineering and TechnologySRM Institute of Science and TechnologyKattankulathur603203India Research Institute of Electronics Shizuoka University3-5-1 JohokuNaka-KuHamamatsuShizuoka432-8011Japan Graduate School of Science and Technology Shizuoka University3-5-1 JohokuNaka-KuHamamatsuShizuoka432-8011Japan

The metallic phase of molybdenum disulfide(M-MoS2)and semiconductor phase of molybdenum disulfide(S-MoS2)was synthesized by hydrothermal method,using cetyltrimethylammonium bromide(cTAB)as a *** structural and elemental composition confirmed the formation of M-MoS2 and *** the morphological analysis layered nanosheets with an inter-layered distance of 0.62 nm for M-MoS2 and 0.95 nm for S-MoS2 was ***-transform infrared(FT-IR)spectral analysis was used to investigate the existence of cTAB functional *** peak at 885 cm-1 attributed to the cH3 bond which confirmed the presence of cTAB in the *** anodic and cathodic peak separation(Epp)values of the counter electrode(cE)has showed at 468.28 mV(M-MoS2)and 540.87 mV(S-MoS2).The M-MoS2 thin film shows higher catalytic activity when compared to S-MoS2 due to more active sites and electronic *** power conversion efficiency of M-MoS2 cE based device exhibits higher efficiency compared to S-MoS2 cE based device.

关键词： M-MoS2 S-MoS2 Layered nanosheet catalytic Power conversion

Status and prospects for symmetric organic redox flow batteries

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Journal of Energy chemistry 2025年第1期100卷 125-143页

作者： Md Al Raihan c.Adam Dyker Department of chemistry University of New BrunswickFrederictonNB E3B 5A3Canada

As environmental concerns from fossil fuel consumption intensify,large-scale energy storage becomes imperative for the integration of renewable sources like wind,hydro,and solar with the electrical *** flow batteries,particularly those employing organic molecules,are positioned as a key technology for this *** review explores the growing field of symmetric organic redox flow batteries(ORFBs)within this *** traditional asymmetric designs based on unique active materials for each electrode,symmetric ORFBs involve a single bipolar species for both *** review highlights the benefits of a symmetric design,and categorizes five distinct classes of organic bipolar molecules used in both aqueous and non-aqueous *** providing a comprehensive overview of their cell cycling and performance characteristics,the strengths and weaknesses of the diverse categories of bipolar molecules are highlighted for both solvent systems,as are opportunities for future *** should guide new research directions and advance the development of practical symmetric ORFBs.

关键词： Redox flow battery Symmetric battery Organic battery Aqueous electrolyte Non-aqueousel ectrolyte

Acquired sensorineural hearing loss,oxidative stress,and microRNAs

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Neural Regeneration Research 2025年第9期20卷 2513-2519页

作者： Desmond A.Nunez Ru c.Guo Division of Otolaryngology–Head&Neck Surgery Department of SurgeryFaculty of MedicineThe University of British ColumbiaVancouverBCCanada Division of Otolaryngology–Head&Neck Surgery Gordon&Leslie Diamond Health Care CentreVancouver General HospitalVancouverBCCanada Faculty of Medicine–The University of British columbia VancouverBCCanada

Hearing loss is the third leading cause of human ***-related hearing loss,one type of acquired sensorineural hearing loss,is largely responsible for this escalating global health ***-induced,ototoxic,and idiopathic sudden sensorineural are other less common types of acquired hearing *** etiology of these conditions is complex and multi-fa ctorial involving an interplay of genetic and environmental *** stress has recently been proposed as a likely linking cause in most types of acquired sensorineural hearing *** non-coding RNA sequences known as microRNAs(miRNAs)have increasingly been shown to play a role in cellular hypoxia and oxidative stress responses including promoting an apoptotic *** hair cell death is a central histopathological finding in sensorineural hearing *** these cells do not regenerate in humans,it underlies the irreversibility of human age-related hearing *** EMBASE,Ovid MEDLINE,Web of Science core collection,and *** databases over the period August 1,2018 to July 31,2023 were searched with"hearing loss,""hypoxamiRs,""hypoxia,""microRNAs,""ischemia,"and"oxidative stress"text words for English language primary study publications or registered clinical *** red clinical trials known to the senior author we re also assessed.A total of 222studies were thus *** excluding duplicates,editorials,retra ctions,secondary research studies,and non-English language articles,39 primary studies and clinical trials underwent full-text *** resulted in 11 animal,in vitro,and/or human subject journal articles and 8 registered clinical trial database entries which form the basis of this narrative *** miR-34a and miR-29b levels increase with age in *** miRNAs were demonstrated in human neuroblastoma and murine cochlear cell lines to target Sirtuin 1/peroxisome proliferato r-activated receptor gamma coactivator-1-alpha(SIRT1/P Gc-1α),SIRT

关键词： hearing loss hypoxia microRNAs oxidative stress sensorineural

controversies in fecal incontinence

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World Journal of Gastroenterology 2025年第3期31卷 113-119页

作者： Andreia Albuquerque Satish S c Rao School of Medicine and Biomedical Sciences Fernando Pessoa UniversityGondomar 4420-096PortoPortugal Precancerous Lesions and Early cancer Management Research Group RISE@cI-IPO(Health Research Network) Portuguese Oncology Institute of PortoPorto 4200-072Portugal Division of Gastroenterology and Hepatology Department of Internal MedicineAugusta UniversityAugustaGA 30912United States

Fecal incontinence is a common condition that can significantly impact patients’quality of *** anal sphincter injury and anorectal surgeries are common *** ultrasound and anorectal manometry are important diagnostic tools for evaluating *** are various treatment options,including diet,lifestyle modifications,drugs,biofeedback therapy,tibial and sacral nerve neuromodulation therapy,and *** this editorial,we will discuss current controversies and novel approaches to fecal *** for asymptomatic anal sphincter defects after obstetric anal sphincter injury and in patients with inflammatory bowel disease is not generally recommended,but may be helpful in selected *** Garg incontinence score is a new score that includes the assessment of solid,liquid,flatus,mucous,stress and urge fecal *** tests such as translumbosacral anorectal magnetic stimulation and novel therapies such as translumbosacral neuromodulation therapy are promising diagnostic and treatment options,for both fecal incontinence and *** biofeedback therapy can overcome some limitations of the office-based *** muscle-derived cell implantation of the external anal sphincter has been further studied as a possible treatment *** neuromodulation may be useful in scleroderma,congenital fecal incontinence and inflammatory bowel disease but merits further study.

关键词： Fecal incontinence Endoanal ultrasound Anal sphincter defects Biofeedback Neuropathy Sacral neuromodulation

Recent progress on elemental tellurium and its devices

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Journal of Semiconductors 2025年第1期46卷 91-106页

作者： Jiachi Liao Zhengxun Lai You Meng Johnny c.Ho Department of Materials Science and Engineering City University of Hong KongKowloonHong Kong 999077China changsha Semiconductor Technology and Application Innovation Research Institute College of Semiconductors(College of IntegratedC ircuits)Hunan UniversityChangsha 410082China Institute for Materials chemistry and Engineering Kyushu UniversityFukuoka 8168580Japan State Key Laboratory of Terahertz and Millimeter Waves City University of Hong KongKowloonHong Kong 999077China

The rapid advancement of information technology has heightened interest in complementary devices and *** p-type semiconductors often lack sufficient electrical performance,thus prompting the search for new materials with high hole mobility and long-term *** tellurium(Te),featuring a one-dimensional chiral atomic structure,has emerged as a promising candidate due to its narrow bandgap,high hole mobility,and versatility in industrial applications,particularly in electronics and renewable *** review highlights recent progress in Te nanostructures and related devices,focusing on synthesis methods,including vapor deposition and hydrothermal synthesis,which produce Te nanowires,nanorods,and other *** applications in photodetectors,gas sensors,and energy harvesting devices are discussed,with a special emphasis on their role within the internet of things(IoT)framework,a rapidly growing field that is reshaping our technological *** prospects and potential applications of Te-based technologies are also highlighted.

关键词： elemental tellurium photodetector field-effect transistor gas sensor energy harvesting device

Multiple sclerosis is at a checkpoint: advancing the program

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Neural Regeneration Research 2025年第3期20卷 811-812页

作者： Brandon c.Smith Jessica L.Williams Department of Neurosciences Lerner Research InstituteCleveland ClinicClevelandOHUSA Department of Biological Geologicaland Environmental SciencesCleveland State UniversityClevelandOHUSA

Multiple sclerosis(MS) is a chronic inflammatory and demyelinating disease of the central nervous system(cNS). Patients with MS experience sensory and motor function loss due to myelin and/or axon damage perpetuated b... 详细信息

关键词： Hauser sclerosis damage

Study of the semilepottonic decays Υ(1S)→B_((c))lν_(l)

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chinese Physics c 2025年第1期49卷 177-185页

作者： c.T.Tran M.A.Ivanov P.Santorelli H.c.Tran Department of Physics HCMC University of Technology and EducationVo Van Ngan 1700000 Ho Chi Minh CityVietnam Bogoliubov Laboratory of Theoretical Physics Joint Institute for Nuclear Research141980 DubnaRussia Dipartimento di Fisica“E.Pancini” Universitàdi Napoli Federico IIComplesso Universitario di Monte S.AngeloVia CintiaEdificio 680126NapoliItaly Istituto Nazionale di Fisica Nucleare Sezione di Napoli80126 NapoliItaly

We study the exclusive semileptonic decaysΥ(1S)→B_((c))lν_(l),where t=e,μ,*** relevant hadronic form factors are calculated using the covariant confined quark model developed previously by our *** predict the branching fractions B(Υ(1S)→B_((c))lν_(l))(vl)to be of the order of 10^(-13)and 10^(-10)for the case of B and B_(c),*** predictions agree well with other theoretical *** also consider the effects of possible new physics in the case of Υ(1S)→B_((c))τν_(τ)and show that the branching fraction of this decay can be enhanced by an order of magnitude using constraints from the B-→D^((*))lν_(l)and B_(c)→J/Ψlν_(l)experimental data.

关键词： heavy quarkonia covariant confined quark model semileptonic decay

Intramolecular direct arylation through mechanochemistry:efficient synthesis of corannulene-based peri-annulated curved nanographenes

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Science china chemistry 2025年

作者： Zhongbo Zhang Mihaiela c.Stuparu School of chemistry Chemical Engineering and Biotechnology Nanyang Technological University National Institute for Research and Development of Isotopic and Molecular Technologies-INcDTIM

Peri-annulation is recognized as an influential structural motif in accessing functional molecular materials. However, efficient synthetic access to peri-annulated structures remains challenging. Herein, we show that mechanochemistry is a valuable synthetic tool to achieve this goal. It is comparatively better than activation through microwave irradiation and conventional solution-phase reactions. The synthesized materials are molecularly curved nanographenes containing sulfur and selenium atoms. The curvature comes from the use of corannulene as the central building block, upon which the benzothiophene or benzoselenophene are peri-annulated through the palladium-catalyzed direct arylation reactions. Peri-annulation endows the nanographene structures with better optical properties as compared to other annulation chemistries.

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On the interfacial behavior of a one-dimensional hexagonal piezoelectric quasicrystal film based on the beam theory

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Applied Mathematics and Mechanics(English Edition) 2025年第2期46卷 289-304页

作者： Wenkai ZHANG c.S.LU Minghao ZHAO cuiying FAN Huayang DANG School of Mechanics and Safety Engineering Zhengzhou University School of civil and Mechanical Engineering Curtin University School of Mechanical Engineering Zhengzhou University

In this paper, the mechanical response of a one-dimensional (1D) hexagonal piezoelectric quasicrystal (PQc) thin film is analyzed under electric and temperature loads. Based on the Euler-Bernoulli beam theory, a theoretical model is proposed, resulting in coupled governing integral equations that account for interfacial normal and shear stresses. To numerically solve these integral equations, an expansion method using orthogonal chebyshev polynomials is employed. The results provide insights into the interfacial stresses, axial force, as well as axial and vertical deformations of the PQc ***, fracture criteria, including stress intensity factors, mode angles, and the Jintegral, are evaluated. The solution is compared with the membrane theory, neglecting the normal stress and bending deformation. Finally, the effects of stiffness and aspect ratio on the PQc film are thoroughly discussed. This study serves as a valuable guide for controlling the mechanical response and conducting safety assessments of PQc film systems.

关键词： one-dimensional (1D) hexagonal piezoelectric quasicrystal (PQc) film beam theory electric and temperature loads chebyshev polynomial interfacial behavior O343.1