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Journal of Semiconductors 2013年第10期34卷 13-18页

作者： J.V.Thombare m.c.rath S.H.Han V.J.Fulari Holography and material Research Laboratory Department of PhysicsShivaji UniversityKolhapur-416 004India Radiation and Photochemistry Division BARCMumbaiIndia Department of chemistry Hanyang UniversitySeoulSouth Korea

Polypyrrole （PPy） thin films were deposited on stainless steel and ITO coated glass substrate at a constant deposition potential of 0.8 V versus saturated calomel electrode （ScE） by using the electrochemical polymerization method. The PPy thin films were deposited at room temperature at various monomer concentrations ranging from 0.1 m to 0.3 m pyrrole. The structural and optical properties of the polypyrrole thin films were investigated using an X-ray diffractometer （XRD）, FTIR spectroscopy, scanning electron microscopy （SEm）, and ultravioletvisible （UV-vis） spectroscopy. The XRD results show that polypyrrole thin films have a semi crystalline structure. Higher monomer concentration results in a slight increase of crystallinity. The polypyrrole thin films deposited at higher monomer concentration exhibit high visible absorbance. The refractive indexes of the polypyrrole thin films are found to be in the range of 1 to 1.3 and vary with monomer concentration as well as wavelength. The extinction coefficient decreases slightly with monomer concentration. The electrochemically synthesized polypyrrole thin film shows optical band gap energy of 2.14 eV.

关键词： polypyrrole electrochemical polymerization method structure optical properties

The effects of electron irradiation on the optical properties of the organic semiconductor polypyrrole

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Journal of Semiconductors 2013年第9期34卷 11-15页

作者： J.V.Thombare m.c.rath S.H.Han V.J.Fulari Holography and materials Research Laboratory Department of PhysicsShivaji University Radiation and Photochemistry Division BARC Department of chemistry Hanyang University

The optical properties of polypyrrole （Ppy） thin films upon 2 meV electron beam irradiation changes with different doses. The induced changes in the optical properties for Ppy thin films were studied in the visible range 300 to 800 nm at room temperature. The optical band gap of the pristine Ppy was found to be 2.19 cV and it decreases up to 1.97 eV for a 50 kGy dose of 2 meV electron beam. The refractive index dispersion of the samples obeys the single oscillator model. The obtained results suggest that electron beam irradiation changes the optical parameters of Ppy thin films.

关键词： polypyrrole electron beam irradiation optical band gap

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 Brunswick

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 purpose. This review explores the growing field of symmetric organic redox flow batteries(ORFBs) within this context. Unlike traditional asymmetric designs based on unique active materials for each electrode, symmetric ORFBs involve a single bipolar species for both electrodes. This review highlights the benefits of a symmetric design, and categorizes five distinct classes of organic bipolar molecules used in both aqueous and non-aqueous solvents. By 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 development. This 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-aqueous electrolyte

Performance analysis of karanja and kusum oils as alternative bio-diesel fuel in diesel engine

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International Journal of Agricultural and Biological Engineering 2011年第2期4卷 23-28页

作者： Saroj Kumar Acharya A K mishra m rath c Nayak Department of mechanical Engineering S O A UniversityBhubaneswarOrissaIndia 751030

Scarcity of conventional petroleum resources has promoted research in alternative fuels for internal combustion *** various possible options,fuels derived from triglycerides(vegetable oils/animal fats)are promising for the substitution of fossil diesel *** oils poses some characteristics like durability,high viscosity and low volatility compared to mineral diesel *** the present work,experiments were designed to study the effect of reducing kusum and karanja oil’s viscosity by preheating the fuel,using a shell and tube heat *** acquired engine data were analyzed for various parameters such as brake thermal efficiency,brake specific energy consumption(BSEc),emission of exhaust gases like cO,cO_(2),Hc and NO_(x).In operation,the engine performance with kusum and karanja oil(preheated),was found to be very close to that of *** preheated oil's performances were found to be slightly inferior in efficiency due to low heating *** performance of karanja oil was found better than kusum oil in all respects.

关键词： diesel engine bio-diesel kusum oil karanja oil alternative fuel preheating viscosity heat exchanger

3D printed microfluidic devices:a review focused on four fundamental manufacturing approaches and implications on the field of healthcare

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Bio-Design and manufacturing 2021年第2期4卷 311-343页

作者： Viraj mehta Subha N.rath Regenerative medicine and Stem cells Laboratory Department of Biomedical EngineeringIndian Institute of Technology HyderabadKandiTelangana 502285India

In the last fewyears,3D printing has emerged as a promising alternative for the fabrication ofmicrofluidic devices,overcoming some of the limitations associated with conventional ***(SLA),extrusion-based technology,and inkjet 3D printing are three of the widely used 3D printing technologies owing to their accessibility and *** devices can be 3D printed by employing a manufacturing approach from four fundamental manufacturing approaches classified as(1)direct printing approach,(2)mold-based approach,(3)modular approach,and(4)hybrid *** evaluate the feasibility of 3D printing technologies for fabricating microfluidic devices,a review focused on 3D printing fundamental manufacturing approaches has been *** a broad spectrum of additive manufacturing materials,3D printed microfluidic devices have been implemented in various fields,including biological,chemical,and material ***,some crucial challenges are associated with the same,including low resolution,low optical transparency,cytotoxicity,high surface roughness,autofluorescence,non-compatibility with conventional sterilization methods,and low gas *** recent research progress in materials related to additive manufacturing has aided in overcoming some of these ***,we outline possible implications of 3D printed microfluidics on the various fields of healthcare such as in vitro disease modeling and organ modeling,novel drug development,personalized treatment for cancer,and cancer drug screening by discussing the current state and future outlook of 3D printed‘organs-on-chips,’and 3D printed‘tumor-on-chips.’We conclude the review by highlighting future research directions in this field.

关键词： 3D printing Additive manufacturing microfluidics Lab-on-a-chip Organ-on-a-chip Tumor-on-a-chip

Dolochar as a reductant in the reduction roasting of iron ore slimes

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International Journal of minerals,metallurgy and materials 2017年第12期24卷 1341-1351页

作者： Swagat S. rath Danda Srinivas Rao Institute of minerals and materials Technology Council of Scientific&Industrial ResearchBhubaneswar 751013India

The present investigation examines the viability of dolochar, a sponge iron industry waste material, as a reductant in the reduction roasting of iron ore slimes, which are another waste generated by iron ore beneficiation plants. Under statistically determined optimum conditions, which include a temperature of 900°c, a reductant-to-feed mass ratio of 0.35, and a reduction time of 30–45 min, the roasted mass, after being subjected to low-intensity magnetic separation, yielded an iron ore concentrate of approximately 64 wt% Fe at a mass recovery of approximately 71% from the feed iron ore slime assaying 56.2 wt% Fe. X-ray diffraction analyses indicated that the magnetic products contain magnetite and hematite as the major phases, whereas the nonmagnetic fractions contain quartz and hematite.

关键词： iron ore slime reduction roasting dolochar reductant magnetic separation

Nonlinear forced vibration in a subcritical regime of a porous functionally graded pipe conveying fluid with a retaining clip

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Applied mathematics and mechanics(English Edition) 2025年第1期46卷 101-122页

作者： m.GHOLAmI m.EFTEKHARI Department of mechanical Engineering Shahid Bahonar University of Kerman

This study examines the nonlinear behaviors of a clamped-clamped porous pipe made of a functionally graded material(FGm) that conveys fluids and is equipped with a retaining clip, focusing on primary resonance and subcritical dynamics. The nonlinear governing equations for the FGm pipe are derived by the extended Hamilton's principle, and subsequently discretized through the application of the Galerkin *** direct method of multi-scales is then used to solve the derived equations. A thorough analysis of various parameters, including the clip stiffness, the power-law index, the porosity, and the clip location, is conducted to gain a comprehensive understanding of the system's nonlinear dynamics. Through the analysis of the first natural frequency, the study highlights the influence of the flow velocity and the clip stiffness, while the comparisons with metallic pipes emphasize the role of FGm composition. The examination of the forced response curves reveals saddle-node bifurcations and their dependence on parameters such as the detuning parameter and the power-law index, offering valuable insights into the system's nonlinear resonant behavior. Furthermore, the frequency-response curves illustrate the hardening nonlinearities influenced by factors such as the porosity and the clip stiffness, revealing nuanced effects on the system response and resonance characteristics. This comprehensive analysis enhances the understanding of nonlinear behaviors in FGm porous pipes with a retaining clip, providing key insights for practical engineering applications in system design and optimization.

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comparison of manual and automatic barcode detection in rough horticultural production systems

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International Journal of Agricultural and Biological Engineering 2019年第6期12卷 169-176页

作者： Felix Eyahanyo Thomas rath Leibniz University of Hannover Institute of Horticultural Production SystemsBiosystems Engineering SectionHerrenhäuser Straße 230419 HannoverGermany University of Applied Sciences Osnabrück Biosystems Engineering Laboratory(BLab)Oldenburger Landstraße 2449090 OsnabrückGermany

Automation of production in the nurseries of flower producing companies using barcode scanners have been attempted but with little *** laser barcode scanners which have been used for automation have failed due to the close proximity between the barcode and the scanner,and factors such as speed,angle of inclination of the barcode,damage to the barcode and dirt on the ***,laser barcode scanners are still being used manually in the nurseries making work laborious and time consuming,which leading to reduced ***,an automated image-based barcode detection system to help solve the aforementioned problems was *** were conducted under different situations with clean and artificially soiled code 128 barcodes in both the laboratory and under real production conditions in a flower producing *** images were analyzed with a specific algorithm developed with the software tool *** the results from the company showed that the image-based system has a future prospect for automation in the nursery.

关键词： automation barcode detection horticultural production systems image processing barcode scanners

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

Probiotics——A complete oral healthcare package

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Journal of Integrative medicine 2020年第6期18卷 462-469页

作者： Sumita mishra Shakti rath Neeta mohanty Department of Orthodontics Institute of Dental SciencesSiksha‘O’Anusandhan(Deemed to be University)Kalinga NagarBhubaneswar 751003OdishaIndia central Research Laboratory Institute of Dental SciencesSiksha‘O’Anusandhan(Deemed to be University)Kalinga NagarBhubaneswar 751003OdishaIndia Department of Oral Pathology and microbiology Institute of Dental SciencesSiksha‘O’Anusandhan(Deemed to be University)Kalinga NagarBhubaneswar 751003OdishaIndia

Probiotics are living bacterial cells that have significant therapeutic potential for treating human infectious *** is a huge market for probiotics in the pharmaceutical *** have been frequently used to treat the gastrointestinal diseases and improve gut *** this review,the strains currently in use for manufacturing oral probiotic formulations are *** review further recommends the use of probiotics for the control of various oral health disorders,like dental caries,periodontitis,gingivitis,halitosis,burning mouth syndrome,and oral ***,this review also explores the use of various commercial probiotic products in maintaining oral health,their market values,and government acts and regulations that are relevant to the production and marketing of *** have tremendous therapeutic potential and more in-depth research must be done on these beneficial bacteria to make them one of the leading drugs in treating oral disorders.

关键词： Lactobacillus microflora Periodontal infections Halitosis Oral health Probiotics Oral hygiene