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Clinical Performance of the Cobalt-Chromium Biodegradable Polymer Coated Sirolimus-Eluting Stent in an Unselected Real-World Population

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International Journal of Clinical Medicine 2014年第5期5卷 206-215页

作者： Prakash Chandwani atul d. abhyankar Jayesh S. Prajapati Sanjay C. Porwal Ashok S. Thakkar Apollo Hospitals International Limited Gandhinagar India Heart and General Hospital Jaipur India KLEs dr. PrabhakarKore Hospital & Medical Research Centre Belgaum India Sahajanand Medical Tech. Pvt. Ltd. Surat India Shree B.d. Mehta Mahavir Heart Institute Surat India

OBJECTIVE: The primary objective of the S-CORE registry was to assess the safety and efficacy of the Supralimus-Core? sirolimus-eluting stent deployment for the treatment of coronary artery disease and event-free survival of patients treated with this coronary stent. METHOdS: S-CORE Registry is an observational, single-arm, non-randomized, post-marketing surveillance multicenter registry in which 562 patients undergoing single or multi-vessel percutaneous coronary intervention were enrolled. The pre-specified primary outcome was the rate of major adverse cardiac events (MACE), defined as the composite of cardiac death, myocardial infarction (MI), target lesion revascularisation (TLR) and target vessel revascularisation (TVR) at 12-month post-procedure. Stent thrombosis (ST) served as the safety endpoint. RESULTS: A total of 640 lesions were treated in 562 enrolled patients (mean age 57.4 ± 10.7 years) with average stent length of 25.0 ± 9.0 mm. Stent delivery was successful in 99% cases. A total of 554 (98.6%) patients have been followed up to 12 months. The incidence of MACE at 30 days and 6 months was 7 (1.2%) and 12 (2.1%) respectively. The composite rate of MACE at a 12-month clinical follow-up was 19 (3.4%), consisting of 12 (2.1%) cardiac deaths, 0 (0%) MI, 6 (1.1%) TLR and 1 (0.2%) TVR. The long-term follow-up of this registry is going on to confirm safety and efficacy profiles. CONCLUSIONS: This multicenter registry demonstrated satisfactory safety and efficacy profiles, as evidenced by low rates of major adverse cardiac events up to 12 months, for the cobalt-chromium biodegradable polymer-based sirolimus-eluting Supralimus-Core? stent in a “real-world” setting.

关键词： Coronary Artery disease Biodegradable Polymer Sirolimus-Eluting Stent

Multilevel resistive switching and synaptic plasticity of nanoparticulated cobaltite oxide memristive device

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Journal of Materials Science & Technology 2021年第19期78卷 81-91页

作者： Tukaram d.dongale atul C.Khot Ashkan V.Takaloo Kyung Rock Son Tae Geun Kim School of Electrical Engineering Korea University.Anam-ro 145.Seongbuk-guSeoul 02841Republic of Korea School of Nanoscience and Biotechnology Shivaji UniversityKolhapur 416004India

Multilevel resistive switching(RS)is a key property to embrace the full potential of memristive devices for non-volatile memory and neuromorphic computing *** this study,we employed nanoparticulated cobaltite oxide(Co_(3)O_(4))as a model material to demonstrate the multilevel RS and synaptic learning capabilities because of its multiple and stable redox state *** Pt/Co_(3)O_(4)/Pt memristive device exhibited tunable RS properties with respect to different voltages and compliance currents(CC)without the electroforming *** is,the device showed voltage-dependent RS at a higher CC whereas CC-dependent RS was observed at lower *** device showed four different resistance states during endurance and retention measurements and non-volatile memory results indicated that the CC-based measurement had less ***,we investigated the basic and complex synaptic plasticity properties using the analog current-voltage characteristics of the Pt/Co_(3)O_(4)/Pt *** particular,we mimicked the potentiation–depression and four-spike time-dependent plasticity(STdP)rules such as asymmetric Hebbian,asymmetric anti-Hebbian,symmetric Hebbian,and symmetric antiHebbian learning *** results of the present work indicate that the cobaltite oxide is an excellent nanomaterial for both multilevel RS and neuromorphic computing applications.

关键词： Multilevel resistive switching Synaptic plasticity STdP Cobaltite oxide Memristive device

Nitration of Jharia basin coals,India:a study of structural modifications by XRd and FTIR techniques

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International Journal of Coal Science & Technology 2021年第5期8卷 1034-1053页

作者： Prabal Boral atul K.Varma Sudip Maity CSIR-Central Institute of Mining and Fuel Research PO:FRIDhanbad 828108India department of Applied Geology Indian Institute of Technology(ISM)Dhanbad826004India

Four coal samples from Jharia basin,India are treated with nitric acid in glacial acetic acid and aqueous media to find out the chemical,petrographic and spatial structure of the organic mass by X-ray diffraction(XRd)and Fourier Transform Infrared Spectroscopy(FTIR)techniques.X-ray parameters of coal like interlayer spacing(d_(002)),crystallite size(L_(c)),aroamticity(f_(a)),average number of aromatic layers(N_(c)),and coal rank(I_(26)/I_(20))have been determined using profilefitting *** variation is observed in treated coals in comparison to the demineralized *** d_(002)values of treated coals have increased in both the media showing increase in disordering of organic moieties.A linear relationship has been observed between d_(002)values with the volatile matter of the ***,the d_(002)values show linear relationship with C_(dmf) contents for demineralized as well as for the treated coals in both the *** L_(c) and N_(c) values have decreased in treated coals corresponding to demineralized *** present study shows that nitration in both the media is capable of removing the aliphatic side chains from the coals and aromaticity(f_(a))increases with increase in rank and shows a linear relationship with the vitrinite *** corresponding I_(26)/I_(20)values are least for treated coals in glacial acetic acid medium followed by raw and then to treated coals in aqueous *** studies show that coal arenes of the raw coals are converted into nitro-arenes in structurally modified coals(SMCs)in both the media,the corresponding bands at 1550-1490 and 1355-1315 cm^(-1) *** study confirms that nitration is the predominant phenomenon,though,oxidation and nitration phenomena takes place simultaneously during treatment with nitric acid to form *** comparison to raw coals,the SMCs show higher aromaticity and may be easily converted to coal derived products like activated carbon and specialty carbon materials

关键词： Coal Micro-structure Nitration XRd FTIR

Experimental investigation into transient pressure pulses during pneumatic conveying of fine powders using Shannon entropy

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Particuology 2016年第6期14卷 143-153页

作者： Amit Goel Anu Mittal S.S. Mallick atul Sharma department of Mechanical Engineering Thapar University Patiala Punjab 147004 India

This paper presents the results of an ongoing investigation into transient pressure pulses using Shan- non entropy. Pressure fluctuations （produced by gas-solid two-phase flow during fluidized dense-phase conveying） are recorded by pressure transducers installed at strategic locations along a pipeline. This work validates previous work on identifying the flow mode from pressure signals （Mittal, Mallick, ＆ Wypych, 2014）. Two different powders, namely fly ash （median particle diameter 45 μm, particle den- sity 1950 kg/m3. loosely poured bulk density 950 kg/m3） and cement （median particle diameter 15 p,m, particle density 3060 kg/m3, loosely poured bulk density 1070 kg/m3）, are conveyed through different pipelines （51 mm I.d. × 70 m length and 63 mm I.d. × 24 m length）. The transient nature of pressure fluc- tuations （instead of steady-state behavior） is considered in investigating flow characteristics. Shannon entropy is found to increase along straight pipe sections for both solids and both pipelines. However, Shannon entropy decreases after a bend. A comparison of Shannon entropy among different ranges of superficial air velocity reveals that high Shannon entropy corresponds to very low velocities （i.e. 3-5 m/s） and very high velocities （i.e. 11-14 m/s） while low Shannon entropy corresponds to mid-range velocities （i.e. 6-8 m/s）.

关键词： Transient pressure fluctuations Fluidized dense phase Shannon entropy Flow pattern Solid loading ratio Superficial air velocity

2d Ti_(3)C_(2)T_(x)MXene-derived self-assembled 3d TiO_(2)nanoflowers for nonvolatile memory and synaptic learning applications

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Journal of Materials Science & Technology 2023年第19期150卷 1-10页

作者： atul C.Khot Tukaram d.dongale Kiran A.Nirmal Jayan K.deepthi Santosh S.Sutar Tae Geun Kim School of Electrical Engineering Korea UniversityAnam-ro 145Seongbuk-guSeoul 02841Republic of Korea Computational Electronics and Nanoscience Research Laboratory School of Nanoscience and BiotechnologyShivaji UniversityKolhapur 416004India Rajagiri School of Engineering and Technology(Autonomous) Rajagiri ValleyKakkanadKochiKerala 682039India Yashwantrao Chavan School of Rural development Shivaji UniversityKolhapur 416004India

Two-dimensional(2d)semiconducting materials and transition-metal oxides are promising materials for nonvolatile memory and brain-inspired neuromorphic computing ***,it remains chal-lenging to obtain high-quality stacked 2d films with low energy consumptions(or drive currents)be-cause of their high interfacial *** this study,we synthesized 2d Ti_(3)C_(2)T_(x)MXene-derived three-dimensional(3d)TiO_(2)nanoflowers(NFs)as a feasible resistive switching(RS)material with outstanding electronic properties and synaptic learning *** electrical and optical characteristics of the synthesized material were determined through density functional theory *** measure-ments of the Al/Ti_(3)C_(2)T_(x)-TiO_(2)NF/Pt memory device indicated the occurrence of forming-free switching phenomena with extremely low switching voltages(0.68-0.53 V),stable ON/OFF ratio(2.3×103),and retention greater than 105 *** Holt-Winters exponential smoothing technique was used for mod-eling and predicting the switching voltages of the RS *** mechanism underlying the reliable RS was confirmed by observing the dense conductive filaments through conductive atomic force ***,the 2d Ti_(3)C_(2)T_(x)MXene-derived 3d TiO_(2)NF-based RS device mimicked the po-tentiation/depression and spike-time-dependent plasticity of a biological ***,a convolutional neural network was implemented based on the observed synaptic weights of Al/Ti_(3)C_(2)T_(x)-TiO_(2)NF/Pt for image-edge detection.

关键词： MXene Ti_(3)C_(2)T_(x)-TiO_(2)nanoflowers Resistive switching Synaptic learning density functional theory Time-series analysis

Energy loss at bends in the pneumatic conveying of fly ash

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Particuology 2015年第4期13卷 65-73页

作者： Naveen Tripathi atul Sharma S.S.Mallick P.W.Wypych department of Mechanical Engineering Thapar University Faculty of Engineering and Information Sciences University of Wollongong

An accurate estimation of the total pressure drop of a pipeline is important to the reliable design of a pneumatic conveying system. The present paper presents results from an investigation into the modelling of the pressure drop at a bend in the pneumatic conveying of fly ash. Seven existing bend models were used （in conjunction with solids friction models for horizontal and vertical straight pipes, and initial acceleration losses） to predict the total pipeline pressure drop in conveying fly ash （median particle diameter： 30 }zm; particle density： 2300 kg/m^3; loose-poured bulk density： 700 kg/m3） in three test rigs （pipelines with dimensions of 69 mm inner diameter （I.d.） × 168 m length; 105 mm I.d. × 168 m length; 69 mm I.d. × 554 m length）. A comparison of the pneumatic conveying characteristics （PCC） predicted using the seven bend models and experimental results shows that the predicted total pipeline PCC and trends depend on the choice of bend model. While some models predict trends that agree with the experimental results, other models predicted greater bend pressure drops for the dense phase of fly ash than for the dilute phase. Models of Pan, R. （1992）. Improving scale-up procedures for the design of pneumatic conveying systems. doctoral dissertation, University of Wollongong, Australia, Pan, R., ＆ Wypych, P.W. （1998）. dilute and dense phase pneumatic conveying of fly ash. In Proceedings of the sixth International Conference on Bulk Materials Storage and Transportation （pp. 183-189）, Wollongong, NSW, Australia and Chambers, A.J., ＆ Marcus, R.d. （1986）. Pneumatic conveying calculations. In Proceedings of the second International Conference on Bulk Materials Storage and Transportation （pp. 49-52）, Wollongong, Australia reliably predicted the bend losses for systems conveying fly ash over a large range of air flows.

关键词： Pneumatic conveying Fluidised dense phase Bend Pressure drop Bend model

A study of knowledge,attitude and practices about otitis media in parents in Navi-Mumbai

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Journal of Otology 2021年第2期16卷 89-94页

作者： Yogesh G.dabholkar Anmol Wadhwa atul deshmukh department of ENT School of MedicineD.Y.Patil UniversityNavi MumbaiIndia Centre for Interdisciplinary Research D.Y.Patil UniversityNavi MumbaiIndia

Although otitis media poses a serious health risk in developing countries,being a frequent occurrence in children below five years of age,parental awareness and practices about otitis media have not been adequately *** cross-sectional study was undertaken in Navi Mumbai schools,from October 2019 to december 2019,wherein parents with childrend a questionnaire which gathered data on their knowledge,attitude and practices about otitis media in their ***-square tests,Cramer’s V were used to study association between gender,age-group and education of parents with their knowledge,practice and attitude about otitis *** of 425 valid responses,overall most parents displayed adequate knowledge(77%),positive attitude(61%)and good care-seeking practices(70%).There was a positive correlation of knowledge and practice with level of *** study shows acceptable levels of knowledge,attitude and practices in parents about otitis *** who did not seek treatment from health centre attributed the behaviour to poverty,ignorance and lack of health *** positive correlation of knowledge and practices with level of education highlights the importance of role of education in modifying parental awareness and care seeking *** findings call for a need to further strengthen community-based healthcare and improve parental confidence in healthcare services for early detection and adequate treatment of otitis media.

关键词： Otitis media Middle ear infections Children Knowledge Attitude Practices

Fabrication of Graphitic Carbon Nitride-Based Film:An Emerged Highly Efficient Catalyst for direct C-H Arylation under Solar Light

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Chinese Journal of Chemistry 2021年第3期39卷 633-639页

作者： Surabhi Chaubey Rajesh K.Yadav Tae Wu Kim Tara Chand Yadav Abhishek Kumar d.K.dwivedi B.K.Pandey atul P.Singh department of Chemistry and Environmental Science Madan Mohan Malaviya University of TechnologyGorakhpur-273010U.PIndia Center for Nanomaterials and Chemical Reactions Institute for Basic Science(IBS)Daejeon 34141Republic of Korea department of Chemistry Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea department of Biotechnology Indian Institute of Technology Roorkee-247667India department of Chemistry Institute of ScienceBanaras Hindu UniversityIndia department of Physics and Material Science Madan Mohan Malaviya University of TechnologyGorakhpur 273010U.PIndia department of Chemistry Chandigarh UniversityMohaliIndia

Main observation and conclusion Photoredox C-H bond formation can proceed in aerobic environment under solar light and has therefore become ***-days,different types of expensive novel metal complexes and nanomaterials have been urbanized as photocatalysts for direct C-H bond formation in between derivatives of heteroarenes(HAs)and aryl diazonium *** photocatalysts,however,still suffer from poor stability,high cost,and ***,a graphitic carbon nitride-based fluorescein isothiocyanate(g-C_(3)N_(4)-FITC)film pho-tocatalyst has been reported,which shows ecellent light harvesting ability,and band gap suitability to catalyze the metal free direct C-H arylation of HAs under solar light at ambient ***,the g-C_(3)N_(4)-FITC film photocatalyst can be reused four times without significant loss of activity,confirming the excellent photocatalytic *** current strategy to constructa g-C_(3)N_(4)-FITC film photocatalyst for direct C-H arylation opens a new path towards replacing metal-based catalysts in fine chemical Sy nthesis.

关键词： Photocatalysis g-C_(3)N_(4)-FITC film photocatalyst C-H activation Heteroarenes Cyclic voltammetry

Boosting the energy harvesting performance of cantilever structured magneto-mechano-electric generator by controlling magnetic flux intensity on magnet proof mass

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Journal of Materiomics 2023年第4期9卷 735-744页

作者： deepak R.Patil Seungah Lee atul Thakre Ajeet Kumar Hyunseok Song dae-Yong Jeong Jungho Ryu School of Materials Science and Engineering Yeungnam UniversityGyeongsan38541South Korea Centre for Functional Materials Vellore Institute of TechnologyVellore632014TamilnaduIndia department of Materials Science&Engineering Inha UniversityIncheon22212South Korea Institute of Materials Technology Yeungnam UniversityDaehak-roGyeongsan38541South Korea

A cantilever-structured magneto-mechano-electric(MME)generator comprising a magnetoelectric composite with a magnet proof mass is a potential candidate for powering autonomous wireless sensor ***,the concept of a magnetic flux concentrator(MFC)to enhance the output performance of the MME generator by focusing the ultralow-intensity magnetic field into the MME generator was ***,the MFC-concentrated magnetic flux mostly focused on the end tip of the MME cantilever rather than at the magnet proof mass located on the cantilever *** that the torque generated by the magnet proof mass contributes more than half of the output power of an MME generator,optimizing the volume and position of the proof-mass with MFC is crucial for better ***,a smaller proof-mass is desirable for the long-term reliability of cantilevertype ***,we investigated the effect of the position and weight(volume)of the magnet proof mass with respect to the MFC on the output performance of the MME generator through finite element analysis and *** MME generator with the lighter magnet proof mass at the optimized position generated a maximum power of 5.35 mW under a 10 Oe magnetic field,which was 210%of that of the MME configuration used in our previous ***,the MME generator showed broadband characteristics around the practical frequency of 60 Hz,which could provide more freedom to design the harvester with high performance.

关键词： Magneto-mechano-electric Magnetic flux concentrator Magnet proof mass Broadband IoT sensor