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Practice patterns among ophthalmic surgeons in treating concomitant oculoplastic conditions in preoperative period:A questionnaire-based study

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World Journal of Clinical Cases 2025年第1期13卷 29-37页

作者： Bijnya Birajita Panda Chitaranjan mishra Bhagabat nayak Avik Kumar Roy Logesh Balakrishnan Priyadarshini mishra Department of Ophthalmology All India Institute of Medical SciencesBhubaneswar 751019OdishaIndia Department of Vitreo-Retina Trilochan NetralayaSambalpur 768004India Department of Glaucoma Services LV Prasad Eye InstituteBhubaneswar 751013India Department of Statistics Apollo HospitalsChennai 823104India

BACKGROUND Addressing oculoplastic conditions in the preoperative period ensures both the safety and functional success of any ophthalmic *** oculoplastic conditions,like nasolacrimal duct obstruction,have been extensively studied,whereas others,like eyelid malposition and thyroid eye disease,have received minimal or no *** To investigate the current practice patterns among ophthalmologists while treating concomitant oculoplastic conditions before any subspecialty ophthalmic *** A cross-sectional survey was disseminated among ophthalmologists all over *** survey included questions related to pre-operative evaluation,anaesthetic and surgical techniques preferred,post-operative care,the use of adjunctive therapies,and patient follow-up *** A total of 180 ophthalmologists responded to the *** practitioners(89%)felt that the ROPLAS test was sufficient during pre-operative evaluation before any subspecialty surgery was *** most common surgical techniques employed were lacrimal drainage procedures(Dacryocystorhinostomy)(63.3%),eyelid malposition repair(36.9%),and ptosis repair(58.7%).Post-operatively,47.7%of respondents emphasized that at least a 4-week gap should be maintained after lacrimal drainage procedures and eyelid ***-seven percent of ophthalmologists felt that topical anaesthetic procedures should be preferred while performing ocular surgeries in thyroid eye disease *** Approximately 50%of ophthalmologists handle prevalent oculoplastic issues themselves,seeking the expertise of an oculoplastic surgeon under particular *** ophthalmologists still favor using ROPLAS as a preliminary screening method before proceeding with cataract *** conditions and thyroid eye disease are not as commonly addressed before subspecialty procedures compared to issues like nasolacrimal duct obstruction and periocular infections.

关键词： Oculoplasty Ophthalmic plastic surgery nasolacrimal duct obstruction Practice patterns Survey

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On Approximation Properties of Modified Sázas-Mirakyan Operators via Jain Operators

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Analysis in Theory and Applications 2016年第3期32卷 232-241页

作者： Prashantkumar Patel vishnu na.a.a. mishra Department of Mathematics St.Xavier's College(Autonomous)Ahmedabad-380009(Gujarat)India Department of Applied Mathematics&Humanities S.V.National Institute of TechnologySurat-395 007(Gujarat)India L.1627 Awadh Puri Colony Beniganj Phase-IIIOpposite-Industrial Training Institute(ITI)Ayodhya Main RoadFaizabadUttar Pradesh 224 001India

In the present manuscript, we propose the modification of Jain operators which the generalization of Szasz-Mirakyan operators. These new class operators are linear positive operators of discrete type depending on a re... 详细信息

关键词： Positive linear operators Jain operators Szasz-Mirakyan operator.

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Direct Result for a Summation-Integral Type Modification of Szasz–Mirakjan Operators

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Analysis in Theory and Applications 2020年第2期36卷 217-224页

作者： vishnu na.a.a. mishra R.B.Gandhi Department of Mathematics Indira Gandhi National Tribal UniversityLalpurAmarkantak 484887Madhya PradeshIndia L.1627 Awadh Puri Colony Beniganj Phase-IIIOpposite–Industrial Training Institute(ITI)Ayodhya Main RoadFaizabadUttar Pradesh 224001India Department of Mathematics BVM Engineering CollegeVallabh Vidyanagar–388120(Gujarat)India

In this paper,study of direct result for a summation-integral type modification of Szasz-Mirakjan operators is carried *** of moments,density result and a Voronvskaja-type result are also obtained.

关键词： Sz'asz-Mirakjan operators K-functional modulus of smoothness Voronovskaja-type result

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Nitrogen uptake by phytoplankton in surface waters of the Indian sector of Southern Ocean during austral summer

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Frontiers of Earth Science 2018年第1期12卷 52-62页

作者： S. C. TRIPATHY SIVAJI PATRA K. vishnu VARDHAN A. SARKAR R. K. mishra N. ANILKUMAR ESSO-national Centre for Antarctic and Ocean Research Ministry of Earth Sciences Headland Sada Vasco-da-Gama Goa 403804 India ESSO-Integrated Coastal and Marine Area Management-PD Ministry of Earth Sciences NIOT Campus Velachery Pallikaranai Chennai 600100 India

This study reports the nitrogen uptake rate （using 15N tracer） of phytoplankton in surface waters of different frontal zones in the Indian sector of the Southern Ocean （SO） during austral summer of 2013. The investigated area encompasses four major frontal systems, i.e., the subtropical front （STF）, subantarctic front （SAF）, polar front-1 （PF1） and polar front-2 （PF2）. Southward decrease of surface water temperature was observed, whereas surface salinity did not show any significant trend. Nutrient （NO3- and SiO44-） concentrations increased southward from STF to PF; while ammonium （NH4＋）, nitrite （NO2-） and phosphate （PO433 remained compara- tively stable. Analysis of nutrient ratios indicated potential N-limited conditions at the STF and SAF but no such scenario was observed for PF. In terms of phytoplankton biomass, PF1 was found to be the most productive followed by SAF, whereas PF2 was the least productive region. Nitrate uptake rate increased with increasing latitude, as no systematic spatial variation was discerned for NH4＋ and urea （CO（NH2）2）. Linear relationship between nitrate and total N-uptake reveals that the studied area is capable of exporting up to 60% of the total production to the deep ocean if the environmental settings are favorable. Like N-uptake rates the f-ratio also increased towards PF region indicating comparatively higher new production in the PF than in the subtropics. The moderately high averagefiratio （0.53） indicates potentially near equal contributions by new production and regenerated production to the total productivity in the study area. Elevation in N-uptake rates with declining temperature suggests that the SO with its vast quantity of cool water could play an important role in drawing down the atmospheric CO2 through the ＂solubility pump＂.

关键词： nitrogen uptake f-ratio new productivity,frontal zones Southern Ocean

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Performance of Corrosion-Resistant Alloys in Concentrated Acids

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Acta Metallurgica Sinica(English Letters) 2017年第4期30卷 306-318页

作者： Ajit mishra Research and Technology Haynes International 1020 ParkAve Kokomo IN 46902 USA

Nickel alloys containing optimum amounts of chromium （Cr）, molybdenum （Mo） and tungsten （W） are widely used in the chemical processing industries due to their tolerance to both oxidizing and reducing conditions. Unlike stainless steel （SS）, Ni-Cr-Mo （W） alloys exhibit remarkably high uniform corrosion resistance in major concentrated acids, like hydrochloric acid （HC1） and sulfuric acid （H2SO4）. A higher uniform corrosion resistance of Ni-Cr-Mo （W） alloys, compared to other alloys, in concentrated acids can be attributed to the formation of protective oxide film of Mo and W in reducing acids, and Cr oxide film in oxidizing solutions. The localized corrosion resistance of Ni-Cr-Mo （W） alloys, containing high amount Cr as well as Mo （or Mo ＋ W）, is also significantly higher than that of other commercially available alloys. The present study investigates the role of alloying elements, in nickel alloys, to uniform corrosion resistance in concentrated acids （HC1, HC1 ＋ oxidizing impurities and H2SO4） and localized corrosion performance in chloride-rich environments using ASTM G-48 test methodology. The corrosion tests were conducted on various alloys, and the results were analyzed using weight loss technique and electrochemical techniques, in conjunction with surface char- acterization tools.

关键词： Nickel-chromium-molybdenum-tungsten Corrosion-resistant alloys Reducing acid Oxidants Localized corrosion Surface characterization

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Corrosion Study of Base Material and Welds of a Ni-Cr-Mo-W Alloy

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Acta Metallurgica Sinica(English Letters) 2017年第4期30卷 326-332页

作者： Ajit mishra Haynes International Inc. 1020 West Park AvenueKokomo IN 46904 USA

Alloys containing chromium （Cr） and molybdenum （Mo）, as the major alloying elements, are widely used in various industries where the material experiences corrosive environments. Chromium （Cr）, when added in an optimum amount, forms a Cr203 passive film which protects the underlying metal in aggressive solutions. Molybdenum （Mo） forms its oxides in the low pH solutions, thus, enhances the uniform corrosion resistance of an alloy in reducing acids and assists in inhibition to localized corrosion. Minor alloying elements, like tungsten （W） and copper （Cu）, also improve the overall corrosion resistance of an alloy in specific solutions. In the present study, corrosion resistance behavior of commercial iron- based alloys （316L SS, 254 SMO and 20Cb3） and nickel-based alloys （Mone1400, Alloy 625 and C-276） was studied in the acidic solutions. While the corrosion behavior of wrought alloys has been widely studied, there is little to no information on the corrosion performance of their welds, typically being the weak regions for corrosion initiation and propagation. Therefore, an attempt was undertaken to investigate the uniform and localized corrosion performance of base metal, simulated heat-affected zone and all-weld-metal samples of a Ni-Cr-Mo-W alloy, C-276. The study was conducted in aggressive acidic solutions. Various corrosion and surface analytical techniques were utilized to analyze the results.

关键词： Iron-chromium-molybdenum Nickel-chromium-molybdenum-tungsten All-weld-metal Heat-affected-zone Acids Acidified ferric chloride Potentiodynamic Scanning electronmicroscopy (SEM)

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An Existence Theorem of Solutions for the System of Generalized Vector Quasi-Variational-Like Inequalities

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American Journal of Operations Research 2013年第3期3卷 329-336页

作者： Shamshad Husain Sanjeev Gupta vishnu na.a.a. mishra Department of Applied Mathematics & Humanities Sardar Vallabhbhai National Institute of Technology Surat India Department of Applied Mathematics Faculty of Engineering & Technology Aligarh Muslim University Aligarh India

In this paper, we introduce and study the system of generalized vector quasi-variational-like inequalities in Hausdorff topological vector spaces, which include the system of vector quasi-variational-like inequalities, the system of vector variational-like inequalities, the system of vector quasi-variational inequalities, and several other systems as special cases. Moreover, a number of C-diagonal quasiconvexity properties are proposed for set-valued maps, which are natural generalizations of the g-diagonal quasiconvexity for real functions. Together with an application of continuous selection and fixed-point theorems, these conditions enable us to prove unified existence results of solutions for the system of generalized vector quasi-variational-like inequalities. The results of this paper can be seen as extensions and generalizations of several known results in the literature.

关键词： The System of Generalized Vector Quasi-Variational-Like Inequalities Fixed Point Theorem Open Lower Section Upper Semicontinuous C-Diagonal Quasiconvexity

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Novel Analytical Approach of Non Conventional Mapping Scheme with Discrete Hartley Transform in OFDM System

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American Journal of Operations Research 2014年第5期4卷 281-292页

作者： Shilpi Gupta Upena Dalal vishnu na.a.a. mishra Applied Mathematics & Humanities Department Sardar Vallabhbhai National Institute of Technology Surat India L. 1627 Awadh Puri Colony Beniganj Faizabad Uttar Pradesh India Electronics Engineering Department Sardar Vallabhbhai National Institute of Technology Surat India

The system performance has been analyzed for π/4 DQPSK mapping scheme, which is differential in nature and hence adding additional advantage. Performance evaluation with random data as well as some images has been taken. Channel modeling has been performed in multipath fading environment. For elaboration of the concept mathematical modeling has been implemented using computer simulation. In this paper, an attempt is made to know the capabilities of DHT-OFDM with non conventional mapping technique π/4 DQPSK.

关键词： DHT-OFDM FFT-OFDM Rayleigh π/4 DQPSK BER

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Geochemistry of Late Archaean shaly BIF formed by oxic exogenic processes: an example from Ramagiri schist belt,Dharwar Craton, India

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Chinese Journal Of Geochemistry 2015年第3期34卷 362-378页

作者： Meenal mishra School of Sciences Indira Gandhi National Open University

The central block of the auriferous Ramagiri schist belt, in the Eastern Dharwar Craton, India consists of bimodal volcanics(mafic-felsic), shaly BIF and metasedimentary rocks. Geochemical studies of the associated shaly BIF have indicated the enrichment of the major and trace elements such as Si O2, Al2O3, Ti O2, K2 O, Mg O, Fe2O3(T),Zr, Y, Cr, Ni, alkali and alkaline earth elements indicates that the clastic component of the shaly BIF had their contribution from the contemporaneous bimodal *** concave chondrite normalized REE patterns share ubiquitously anomalous positive cerium anomaly, absence of positive europium anomaly and the overall HREE enrichment. The REE patterns resemble those from the modern day sea water, except for positive Ce anomaly. The data suggests that arc related bimodal volcanism had been the plausible source of Fe, silica, REE and other trace elements. The coherent behaviour of Fe, Ti, Mn and P with the REEs indicates that they got incorporated from Fe–Ti–Mn bearing primary minerals and secondary products like clays. The variability of REE patterns in the BIF formation samples probably results from the differences in scavenging efficiency. The BIF bears signatures of mixing of the contemporaneous clastic and chemical processes, as well as the changes accompanying diagenesis and *** precipitation of Fe did not stop during the sedimentation in an island arc related tectonic setting. The BIF strongly lacks the signatures from hydrothermal input. The presence of positive cerium anomalies and the absence of positive europium anomalies in the shaly banded ironformations imply that iron oxidation during BIF deposition took place in shallow waters rather than at depth, at oxicanoxic boundary.

关键词：地球化学二氧化硅克拉通晚太古代岩带印度力作用双峰式火山岩

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Non-Static Plane Symmetric Zeldovich Fluid Model In Scale Invariant Theory

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Chinese Physics Letters 2004年第12期21卷 2359-2361页

作者： B.mishra DepartmentofMathematics TheICFAIInstituteofScienceandTechnologyBhubaneswar751023India

The perfect fluid distribution in scale invariant theory of gravitation is studied, when the spacetime is described by non-static plane symmetric metric with a time-dependent gauge function. The Zeldovich model of the... 详细信息

关键词： Gravitation and cosmology Astrophysics and astroparticles

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