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Response of photonic Hydrogels of Homogeneous particles to Uranyl Ions in Aqueous Solutions

photonic Sensors 2023年第4期13卷 50-61页

作者： R.G.JOSHI Deepak k.GUpTA p.AMESH p.k.parida T.R.RAVINDRAN Materials Science Group Indira Gandhi Centre for Atomic ResearchA CI of Homi Bhabha National InstituteKalpakkam 603102India Materials Chemistry and Metal Fuel Cycle Group Indira Gandhi Centre for Atomic ResearchA CI of Homi Bhabha National InstituteKalpakkam 603102India Metallurgy and Materials Group Indira Gandhi Centre for Atomic ResearchA CI of Homi Bhabha National Institute(HBNI)Kalpakkam 603102India

We study here the response of photonic hydrogels(pHs),made of photonic crystals of homogeneous silica particles in polyacrylamide hydrogels(SpHs),to the uranyl ions 22 UO_(2)^(2+) in aqueous *** is found that the reflection spectra of the SpH show a peak due to the Bragg diffraction,which exhibits a blue shift in the presence of 22 UO_(2)^(2+).Upon exposure to the SpH,22 UO_(2)^(2+)gets adsorbed on the SpH and forms complex coordinate bonds with multiple ligands on the SpH,which causes shrinking of hydrogel and leads to the blue shift in the diffraction *** amount of the blue shift in the diffraction peak increases monotonically up to 22 UO_(2)^(2+)concentrations as high as 2300μ*** equilibration time for the shift in the Bragg peak upon exposure to 22 UO_(2)^(2+)is found to be~30 *** results are in contrast to the earlier reports on photonic hydrogels of inhomogeneous microgel particles hydrogel(MpH),which shows the threshold 22 UO_(2)^(2+)concentration of~600μM,below which the diffraction peak exhibits a blue shift and a change to a red shift above *** equilibration time for MpH is~300 *** observed monotonic blue shift and the faster time response of the SpH to 22 UO_(2)^(2+)as compared to the MpH are explained in terms of homogeneous nature of silica particles in the SpH,against the porous and polymeric nature of microgels in the *** also study the extraction of 22 UO_(2)^(2+)from aqueous solutions using the *** extraction capacity estimated by the arsenazo-III analysis is found to be 112 mM/kg.

关键词： photonic hydrogels uranium extraction and monitoring arsenazo-Ⅲ-uranium complex polyacrylamide hydrogel UV-visible spectroscopy

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Enhanced green emission from La＿(0.4)F＿3:Ce＿(0.45),Tb＿(0.15)/TiO＿2 core/shell structure

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Journal of Rare Earths 2015年第1期33卷 20-26页

作者： T.k.Srinivasan B.S.panigrahi N.Suriyamurthy p.k.parida B.Venkatraman Indira Gandhi Centre for Atomic Research Kalpakkam–603102 India

Nano sized La0.4F3：Ce0.45,Tb0.15（core）, La0.4F3：Ce0.45,Tb0.15（Ti O2）（core） shell, La0.55F：Ce0.45, and La0.85F3：Tb0.15 particles were synthesized by adopting co-precipitation technique in acidic environment and coated with Ti O2 to form a core-shell structure by adopting a mechanical dispersion method at room temperature. The synthesized materials were characterized using X-ray diffraction（XRD）, transmission electron microscopy（TEM）, Fourier transform infrared spectroscopy（FTIR）, ultraviolet-visible spectroscopy（UV-Vis） absorption, photoluminescence and lifetime spectroscopy. The crystal structure of La0.4F3：Ce0.45,Tb0.15 remained the same as La F3 after being doped with Ce and Tb ions but with a slight decrease in the lattice parameter. TEM image confirmed the formation of a core-shell structure. The La0.4F3：Ce0.45,Tb0.15/Ti O2 exhibited Tb3＋ fluorescence enhancement by a factor of 1.76. Scintillation from the synthesized materials was also observed under X-ray excitation.

关键词： core-shell cerium terbium luminescence lanthanum fluoride scintillation rare earths

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Incidence of exclusive extrapelvic skeletal metastasis in prostate carcinoma on bone scintigraphy

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World Journal of Radiology 2024年第7期16卷 265-273页

作者： parneet Singh kanhaiyalal Agrawal Ashique Rahman Tejasvini Singhal Girish kumar parida Gopinath Gnanasegaran Department of Nuclear Medicine All India Institute of Medical SciencesBhubaneshwar 751019OdishaIndia Department of Nuclear Medicine Royal Free HospitalLondon NW32QGUnited Kingdom

BACkGROUND Bone is one of the common sites of metastasis from prostate *** scintigraphy(BS)is one of the most sensitive imaging modalities currently used for bone metastatic *** metastasis in prostate carcinoma commonly involves pelvic bones but rarely involves extrapelvic-extraspinal *** To retrospectively analyze the BS data to determine the pattern of skeletal metastases in the prostate *** This retrospective observational study involves patients with biopsy-proven prostate carcinoma referred for BS for staging *** with abnormal BS were evaluated for the pattern of skeletal involvement and data were pre-sented in descriptive format in the form of *** A total of 150 patients with biopsy-proven prostate cancer who were referred for staging were included in the *** of 150 patients(8.67%)had no abnormal uptake on planar images,ruling out metastatic ***-four patients(16%)had heterogeneous uptake in the spine with distribution charac-teristic of degenerative disease and no scan pattern of metastatic *** patients(20%)had multifocal uptake involving both pelvic and extra pelvic bones on planar images typical for skeletal metastasis and were considered ***-three out of 150 patients(55.3%)had increased tracer uptake,which was indeterminate,thus,single photon emission computed tomography-computed tomography(SpECT-CT)was acquired,which showed 51 with metastatic disease,31 benign lesions,and one indeterminate *** of 150 patients had exclusive pelvic bone uptake,which was found to be metastatic in 4/7 patients in *** six out of 150 patients showed exclusive extrapelvic tracer uptake,of which only 3 had vertebral metastatic *** of the patients with increased uptake exclusively in the extrapelvic-extraspinal location was *** The incidence of exclusive extrapelvic skeletal metastatic disease in prostate carcinom

关键词： pelvic prostate cancer Bone scan Single photon emission computed tomography-computed tomography Skeletal metastasis

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Simultaneously enhanced efficiency and ambient stability of inorganic perovskite solar cells by employing tetramethylammonium chloride additive in CspbI2Br

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Journal of Materials Science & Technology 2022年第7期102卷 224-231页

作者： In Su Jin Bhaskar parida Jae Woong Jung Department of Advanced Materials Engineering for Information and Electronics Kyung Hee University1732 Deogyeong-daeroGiheung-guYongin-siGyeonggi-do 446-701Republic of Korea Integrated Education Institute for Frontier Materials(Bk21 Four) Kyung Hee University1732 Deogyeong-daeroGiheung-guYongin-siGyeonggi-do 446-701Republic of Korea

Although all-inorganic perovskites possess suitable bandgap and thermal stability for photovoltaic ap-plications,the unstable film morphologies,and poor moisture stabilities lag behind the organic-inorganic hybrid ***,we demonstrate that high qualityα-CspbI_(2 ) Br films with improved phase sta-bility,high crystallinity,and pinhole-free film morphology was achieved by employing tetramethylammo-nium chloride(TMACl)as an *** a result,the TMACl-added CspbI_(2) Br films exhibited high power conversion efficiency of 14.12%with an open-circuit voltage of 1.19 V,a short-circuit current density of 15.08 mA/cm^(2),and a fill factor of *** importantly,the TMACl addition imparts hydrophobicity to the film surface of CspbI_(2) Br,which delivered excellent stability up to 30 days in the ambient condition and thermal stability at 85℃ for 156 h,***,the TMACl-added device also exhibited excellent pCE of 27.16%under indoor light source(1000 lux),which presents a promising approach for designing stable but high performance all-inorganic perovskite solar cells.

关键词： Inorganic perovskite solar cells CspbI2Br Additive Tetramethylammonium chloride Efficiency

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Endoscopic stapedotomy:A comparison between the conventional approach versus CO_(2)laser‐assisted surgery

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2023年第4期9卷 308-313页

作者： pradeep pradhan Vinusree karakkandy Chappity preetam pradipta k.parida Department of ENT and Head Neck Surgery All India Institute of Medical SciencesBhubaneswarOdishaIndia

Background:Although the utility of laser fiber in microscopic stapes surgery has been documented in the past,their role can be highly emphasized in endoscopic stapes surgery,especially in difficult anatomical ***:This is a retrospective analysis of cases where a total of 46 patients(22 in conventional stapedotomy and 24 in CO_(2) laser‐assisted stapedotomy)were included in the *** clinical parameters were assessed both in the preoperative and postoperative periods in the respective groups and later compared 12 weeks after ***:A total of 90.90%(20/22)of the patients in the conventional stapedotomy and 95.83%(23/24)of patients in laser‐assisted stapedotomy hadp in the postoperative period(p=0.71).Canaloplasty was required in six patients in the conventional stapedotomy and none of the patients in the laser group needed the same(p=0.01).Chorda tympani nerve was manipulated in 59.09%(13/22)and 25.00%(6/24)of cases in the conventional group and in the CO_(2) laser group,respectively(p=0.01).Conclusion:Although the audiological outcomes with fiber‐enabled CO_(2) laser in endoscopic stapedotomy are comparable to conventional surgery,it is a better tool in a narrow auditory canal,requiring minimal manipulation of the chorda tympani nerve.

关键词： CO_(2)laser conventional approach endoscopic stapedotomy outcomes

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Ball Convergence Theorems for Chebyshev-Halley Method in B-Space

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Journal of Mathematical Research with Applications 2023年第6期43卷 723-736页

作者： Chandni kUMARI pradip kumar parida Department of Mathematics Central University of Jharkhand

A local convergence analysis of Chebyshev-Halley method having third order of convergence for approximating zero of non-linear operator f(v) = 0 by using convex majorant function and their condition in B-space(Banach space), is presented in this article. We give the error estimate to show the efficiency of our study. Besides, we established the relation between majorant function and kantorovich or Smale-type result as special cases of our general theory.

关键词： Chebyshev-Halley method Majorizing function Majorant condition Local convergence kantorovich-type condition Smale-type condition

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GaN based transfer electron and avalanche transit time devices

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Journal of Semiconductors 2012年第5期33卷 32-37页

作者： R.k.parida A.k.panda ITER Siksha‘O’Anusandhan University National Institute of Science and Technology

A new model is developed to study the microwave/mm wave characteristics of two-terminal GaNbased transfer electron devices（TEDs）,namely a Gunn diode and an impact avalanche transit time（IMpATT） *** characteristics such as device efficiency and the microwave power generated are computed and compared at D-band（140 GHz center frequency） to see the potentiality of each device under the same operating *** is seen that GaN-based IMpATT devices surpass the Gunn diode in the said frequency region.

关键词： GaN transfer electron device avalanche transit time device

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Integrated Condition Monitoring of Large Captive power plants and Aluminum Smelters

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Sound & Vibration 2019年第5期53卷 223-235页

作者： J.k.Mohanty A.Adarsh p.R.Dash k.parida p.k.pradhan Department of Mechanical Engineering VSSUTBurlaOdishaIndia Vedanta Limited JharsugudaOdishaIndia

Condition monitoring is implementation of the advanced diagnostic techniques to reduce downtime and to increase the efficiency and *** research is for determining the usage of advanced techniques like Vibration analysis,Oil analysis and Thermography to diagnose ensuing problems of the plant and Machinery at an early stage and plan to take corrective and preventive actions to eliminate the forthcoming breakdown and enhancing the reliability of the ***,the most of the industries have adopted the condition monitoring techniques as a part of support system to the basic maintenance *** condition monitoring technique they follow is Vibration Spectrum Analysis,which can detect faults at a very early *** implementation of other techniques like Oil analysis or Ferrography,Thermography *** further enhance the data interpretation as they would detect the source of abnormality at much early stage thus providing us with a longer lead time to plan and take the corrective *** Large Captive power plants and Aluminium Smelters,Integrated Condition Monitoring techniques play an important role as stoppage of primary system and its auxiliaries(boiler,steam turbine,generator,coal and ash handling plants etc.)results into the stoppage of the entire plant,which in turn leads to loss of *** economical and operational point of view,it is desirable to ensure optimum level of system availability.

关键词： Condition monitoring thermal power plant vibration analysis thermographs maintenance

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The portrayal of hearing loss information in online Mandarin videos

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Journal of Otology 2023年第3期18卷 152-159页

作者： Chandan H.Suresh kiara Leng Nilesh J.Washnik Satyabrata parida Department of Communication Disorders California State UniversityLos AngelesUSA Department of Communication Sciences and Disorders Ohio UniversityAthensOHUSA Department of Neurobiology University of PittsburghPittsburghPA15261USA

Background/purpose:With increasing accessibility to the Internet,patients frequently use the Internet for hearing healthcare *** study has examined the information about hearing loss available in the Mandarin language on online video-sharing *** study’s primary purpose is to investigate the content,source,understandability,and actionability of hearing loss information in the Mandarin language’s one hundred most popular online ***:In this project,publicly accessible online videos were *** hundred of the most popular Mandarin-language videos about hearing loss were identified(51 videos on YouTube and 49 on the Bilibili video-sharing platform).They were manually coded for different popularity metrics,sources,and *** video was also rated using the patient Education Materials Assessment Tool for Audiovisual Materials(pEMAT-AV)to measure the understandability and actionability ***:The video sources were classified as either media(n=36),professional(n=39),or consumer(n=25).The videos covered various topics,including symptoms,consequences,and treatment of hearing ***,videos attained adequate understandability scores(mean=73.6%)but low(mean=43.4%)actionability ***:While existing online content related to hearing loss is quite diverse and largely understandable,those videos provide limited actionable *** healthcare professionals,media,and content creators can help patients better understand their conditions and make educated hearing healthcare decisions by focusing on the actionability information in their online videos.

关键词： Hearing loss YouTube BiliBili Internet health information Social media

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Electronic and magnetic properties at rough alloyed interfaces of Fe/Co on Au substrates: An augmented space study

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Chinese physics B 2016年第5期25卷 298-304页

作者： priyadarshini parida Biplab Ganguli Department of physics & Astronomy National Institute of Technology Rourkela

We studied the interface electronic and magnetic properties of Fe/Co deposited on Au substrate and researched the effects of roughness at the interfaces within augmented space formalism （ASF）. The full calculation is carried out by recursion and tight-binding linear muffin tin orbital （TB-LMTO） methods. The amount of roughness is different at different atomic layers. The formalism is also applied to sharp interface, when interdiffusion of atoms is negligible. Our results of one monolayer transition metal agree with other reported results. A realistic rough interface is also modeled with three and four monolayers of transition metals, deposited on Au substrates.

关键词： augmented space formalism tight-binding linear muffin tin orbital rough interface magneticproperties

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