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Comparing accuracy of cochlear measurements on magnetic resonance imaging and computed tomography:A step towards radiation-free cochlear implantation

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中华耳科学杂志:英文版 2023年第4期18卷 208-213页

作者： Anurita Swarup Vinusree Karakkandy Preetam Chappity Suprava Naik Sanjay kumar Behera Pradipta kumar Parida Mohnish Grover Gaurav Gupta Prajna Paramita Giri Saurav sarkar Pradeep Pradhan Dillip kumar Samal Aswathi Kallyadan Veetil Asutosh Adhikari Saurav Nayak Department of ENT and HNS All India Institute of Medical Sciences(AIIMS)BhubaneswarOdishaIndia Department of Radiodiagnosis All India Institute of Medical Sciences(AIIMS)BhubaneswarOdishaIndia Department of Community and Family Medicine All India Institute of Medical Sciences(AIIMS)BhubaneswarOdishaIndia Department of Biochemistry All India Institute of Medical Sciences(AIIMS)BhubaneswarOdishaIndia Department of ENT Sawai Man Singh Medical CollegeJaipurRajasthanIndia Department of ENT Sardar Patel Medical CollegeBikanerRajasthanIndia

Objective:Computed Tomography(CT)and Magnetic Resonance Imaging(MRI)are commonly employed in pre-operative evaluation for cochlear implant ***,with a decrease in the age of implantation,even minor radiation exposure can cause detrimental effects on children over their *** current study compares different cochlear measurements from CT and MRI scans and evaluates the feasibility of using only an MRI scan for radiological evaluation before cochlear ***:A longitudinal observational study was conducted on 94 ears/47 children,employing CT and MRI *** CT and MRI scan measurements include,A value,B value,Cochlear duct length(CDL),twoturn cochlear length,alpha and beta angles to look for cochlear *** nerve diameter was measured using *** values were ***:The mean difference between measurements from CT and MRI scans for A value,B value,CDL,and two-turn cochlear length values was 0.567±0.413 mm,0.406±0.368 mm,2.365±1.675 mm,and 2.063±1.477 mm respectively without any significant *** alpha and beta angle measures were comparable,with no statistically significant ***:The study suggests that MRI scans can be the only radiological investigation needed with no radiation risk and reduces the cost of cochlear implant program in the paediatric *** is no significant difference between the measurements obtained from CT and MRI ***,observed discrepancies in cochlear measurements across different populations require regionally or race-specific standardized values to ensure accurate diagnosis and precision in cochlear implant *** aspect must be addressed to ensure positive outcomes for patients.

关键词： Cochlear implant Hearing loss Cochlea anatomy Radiology

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Bronchogenic Carcinoma in a Scleroderma Patient with Multiple Metastases： One Case Report

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Clinical oncology and cancer researeh 2010年第3期7卷 214-216页

作者： Pradipta Guha Shivesh Shanker Sahai Debasis sarkar Partha Sardar Anup Singh Bipiab Mandal Bidyut kumar Das Sanjoy kumar Chatterjee Department of General Medicine Medica College Kolkata 700083 West Bengal India.

IntroductionThe association between pulmonary interstitial fibrosis and the development of bronchogenic carcinoma in a patient with scleroderma has been reported rarely. It is hypothesized that intense epithelial proliferation that is accompanied by the .brotic process increases the occurrence of carcinomatous changes. We report the case of a pa-tient who presented with 3-year history of Raynaud＇s phenomenon, gradual tightening of the skin which was ignored by the patient and her family members, and a 2-week history of severe respiratory dis-tress with left shoulder and upper back pain followed by the develop-ment of paraparesis. After a series of examinations, the patient was diagnosed with scleroderma and simultaneously with bronchogenic carcinoma and multiple distant metastases.

关键词： scleroderma bronchogenic carcinoma metastasis.

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A Mobile Ad-Hoc Routing Algorithm with Comparative Study of Earlier Proposed Algorithms

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International Journal of Communications, Network and System Sciences 2010年第3期3卷 289-293页

作者： kumar Verma Pawan Gupta tarun Rakesh Nitin Nitin Nitin 不详

A mobile ad-hoc network is an autonomous collection of mobile nodes that communicate over bandwidth constrained wireless links. Due to nodal mobility, the network topology may change rapidly and unpredictably over time. The routing protocols meant for wired network cannot be used for mobile ad-hoc network because of mobility of network. A number of routing protocols like Destination-Sequenced Distance-Vector (DSDV), Ad-Hoc On-Demand Distance Vector (AODV), Dynamic Source Routing (DSR), and Temporally Ordered Routing Algorithm have been implemented. The ad-hoc routing protocols can be divided into two classes;Table-Driven and On-Demand. This paper examines two routing protocols for mobile ad-hoc networks—the Destination Sequenced Distance Vector (DSDV), the table-driven protocol and the Ad-Hoc On- Demand Distance Vector routing (AODV), an on-demand protocol and propose an algorithm that facilitates efficient routing of the packet and failure recovery

关键词： AODV DSDV Relative Performance

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Salt tolerant culturable microbes accessible in the soil of the Sundarban Mangrove forest, India

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Open Journal of Ecology 2011年第2期1卷 35-40页

作者： Subhajit Das Minati De Raghab Ray Dipnarayan Ganguly Tapan kumar Jana tarun kumar De Department of Marine Science Calcutta University 35 B.C. Road Calcutta-700 019

Sundarban Mangrove forest is highly productive marine ecosystem where halophilic microbes actively participate in bio-mineralization and biotransformation of minerals. The population of aerobic halophilic microbes was studied to determine their distribution with the availability of different physicochemical parameters with increasing depth of this forest sediment. The present study revealed that microbes present in the top soil region were less tolerant to fluctuation in salinity than the middle and bottom segment. Microbes isolated from bottom segment showed higher growth rate in anaerobic condition. A decreasing trend of total microbial population and organic carbon content of soil were found with increase in depth. In contrary a reverse profile was found for salinity. A significant stratification was found to exist among microbial population and the salty nature of the soil of Sundarban Mangrove forest.

关键词： Sundarban Mangrove Forest Ecosystem Halophilic Microbes Aerobic Condition Anaerobic Condition

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Distribution and Prevalence of Dermatophytes in Semi-Arid Region of India

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Advances in Microbiology 2015年第2期5卷 93-106页

作者： Vishnu Sharma tarun kumar Kumawat Anima Sharma Ruchi Seth Subhash Chandra Department of Biotechnology JECRC University Jaipur India Vardhaman Mahaveer Open University Kota India

Earth has been documented as a natural territory for fungi which cover individual kingdom with evolution. In subsequently vertebrates developed keratin which was a part of life as a structural aspect. Few moulds have skilled to digest keratin and crop up from soil and wastewater habitats. They take part as a keratinolytic agent in the purification of α-keratins with an incidence of disulphide and hydrogen bonds which are improperly biodegradable. The best moulds genera to decay of keratin are Microsporum, Trichophyton and Epidermophyton. The presences of these genera are open health issues in developing countries where they cause the mortal mycotic contagion. The reason behind this is perceived to be the poor hygienic environment and socioeconomic behaviour among people. The present review is a compilation of updated information concerning the nature of these keratinolytic moulds and abundances of most contributed developing countries including India.

关键词： Moulds Keratinophytes Dermatophytes Keratinase Mycoses

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Bacterial and fungal co-infection is a major barrier in COVID-19 patients:A specific management and therapeutic strategy is required

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World Journal of Virology 2022年第2期11卷 107-110页

作者： tarun Sahu Henu kumar Verma Lakkakula V K S Bhaskar Department of Physiology All India Institute of Medical ScienceRaipur 492001ChhattisgarhIndia Department of Immunopathology Institute of Lung Health and ImmunityComprehensive Pneumology CenterHelmholtz ZentrumMunich 85764Germany Department of Zoology Guru Ghasidas VishwavidyalayaBilaspur 495001ChhattisgarhIndia

Microbial co-infections are another primary concern in patients with coronavirus disease 2019(COVID-19),yet it is an untouched area among *** data and systematic reviews only show the type of pathogens responsible for that,but its pathophysiology is still *** show that these microbial co-infections are hospital-acquired/nosocomial infections,and patients admitted to intensive care units with invasive mechanical ventilation are highly susceptible to *** with COVID-19 had elevated inflammatory cytokines and a weakened cell-mediated immune response,with lower CD4+T and CD8+T cell counts,indicating vulnerability to various *** this,there are only a few studies that recommend the management of coinfections.

关键词： COVID-19 Co-infection Bacterial co-infection Fungal co-infection

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Soil Urease Activity of Sundarban Mangrove Ecosystem, India

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Advances in Microbiology 2017年第8期7卷 617-632页

作者： Subhajit Das Dipnarayan Ganguly Abhishek Mukherjee Sabyasachi Chakraborty tarun kumar De Department of Marine Science University of Calcutta Kolkata India

Vertical occurrence of soil urease activity along with ammonia content from three distinct regions viz. Deep forest region (No tidal action and wave attack occurs as it is furthest from river shore and it contains maximum content of organic carbon and minimum soil salinity and silicate concentration. In this zone plenty of pneumatophores, below ground root and dense vegetation are found), Rooted region (It is situated in between Deep forest region and Un-rooted region. This region contains only pneumatophores but it is devoid of long roots and vegetations. It faces wave attack and tidal action less than that of Un-rooted region) and Un-rooted region (It is closest to river shore and faces maximum wave attack and tidal action;it contains minimum organic carbon but maximum soil salinity and silicate concentration. This zone is totally devoid of any roots, pneumatophores and vegetations) of Sundarban mangrove forest ecosystem, India revealed an interesting explanation. Soil urease activity showed a decreasing pattern with increase in depth from the deep forest region of the Sundarban forest ecosystem. Soil urease activity was found to be more sensitive to soil temperature and pH rather than soil salinity. This ensured that soil urease along with the microbes present in the Sundarban forest ecosystem are more tolerant to fluctuation in salinity than that of temperature. Soil ammonia concentration was found to be directly governed by the soil urease activity [The regression equation is Ammonia in soil = -1.64 + 0.0402 Urease Activity (R-Sq = 62.9%, P < 0.001, n = 41)].

关键词： Soil Urease Activity Soil Ammonia Deep Forest Region Rooted Region Un-Rooted Region and Sundarban Forest Ecosystem

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Achieve Intended Learning Outcomes and Improving Digital Literacy Skills for Practical-Based Subjects Using Online Teaching via Propagation of OER Materials

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Journal of Textile Science and Technology 2023年第1期9卷 84-100页

作者： Ka Man Mok Prabrisha sarkar Shui Wing Ng Sumit Mandal Qing Chen Manas kumar sarkar School of Fashion and Textiles The Hong Kong Polytechnic University Hong Kong China Department of Creative Arts Hong Kong Metropolitan University Hong Kong China Department of Design and Merchandising Oklahoma State University Stillwater Oklahoma USA Shanghai International Fashion Centre Donghua University Shanghai China

As professors are subjected to teaching their classes online due to the recent COVID-19, our local Hong Kong students find it difficult to consult their teachers, and ultimately would fail to achieve the intended learning outcomes, especially for practical-based subjects. In this research, students having online classes of a practical-based fabric design subject were encouraged to self-study from Open Educational Resource (OER) materials for a further and better understanding of their subject. Additionally, online materials were developed to improve students’ understanding via skill of digital literacy. Their learning progress was evaluated and compared to the face-to-face version. The majority of students found online classes combined with self-studying OER materials, potentially be a substitute for face-to-face classes. Most of the students further opined different OER videos assisted them without any face-to-face instructions in practical works, to develop new fabric samples from the inspiration. Analysis of test results, and comparison of students’ final grades with different learning modes, supported these phenomena.

关键词： Online Teaching Open Educational Resources Learning Outcome Fabric Design Textile Education Teaching Design Subjects

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Correlation Holography with A Single-Pixel Detector:A Review

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激光与光电子学进展 2021年第10期58卷 140-157页

作者： Tushar sarkar Aditya Chandra Mandal Chen Ziyang Pu Jixiong Rakesh kumar Singh Department of Physics Indian Institute of Technology(Banaras Hindu University)Varanasi221005India Department of Mining Engineering Indian Institute of Technology(Banaras Hindru University)Varanasi221005India College of Information Science and Engineering Fujian Provincial Key Laboratory of Light Propagation and TransformationHuaqiao UniversityXiamenFujian 361021China

Correlation holography uses incoherent light to reconstruct *** technique reconstructs objects as distributions of two-point coherence function rather than using optical fields,as in conventional *** basic principle of correlation holography is derived from the van Cittert--Zernike theorem and relies on the similarity between the optical field and the coherence *** implementation of the correlation holography techniques requires a field or intensity interferometer,and fringe analysis and crosscovariance measurement in these interferometers require a conventional camera with array *** the availability of digitally controlled diffractive elements,it is possible to replace the incoherent light source,such as a rotating ground glass,with a digital source loaded with the random patterns in *** strategies ease the burden on the detector and allow for correlation holography with a single-pixel detector(SPD)to be *** review paper discusses a close connection between digital holography and correlation *** principles of correlation holography with the SPD are reviewed in detail,and the advantages of using digital sources to mimic incoherent illumination in the correlation holography are examined in the context of three-dimensional and complex field imaging.

关键词： imaging systems correlation holography singlepixel detector digital holography coherence optics phase recovery

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Preliminary Variations in Physiological Modules When <i>sub</i>1<i>A</i>QTL Is under Soil-Moisture Deficit Stress

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American Journal of Plant Sciences 2018年第4期9卷 732-744页

作者： Indraneel Saha Arnab kumar De Arijit Ghosh Bipul sarkar Narottam Dey Malay kumar Adak Department of Botany University of Kalyani Kalyani India Department of Biotechnology Visva-Bharati University Santiniketan India

The present investigation embodies with some distinct physiological responses of rice seedlings bearing sub1A allele when cultured under soil moisture deficit condition. In order to estimate the extent of variation of sub1A allele in cv. Swarna Sub1, few specific responses were recorded. Ongoing days (2, 4 and 8) of water stress, rice seedlings were mostly concerned with regulation of root growth through 1.24%, 4.10% and 8.96% as compared to control. When relative growth rate (RGR) of the biomass was considered, it recorded a significant down regulation maximum by 27.27% over non-stressed plants. The light absorbing capacity of foliages in terms of leaf mass ratio (15.62%) and specific leaf weight (8.45%) was also curtailed under stress contiguously with total dry matter accumulation. For light harnessing mechanism, the contributing pigments were most significantly (p ≤ 0.05) affected with maximum variation for chlorophyll (31.29%), lycopene (79.31%) and carotenoids (55.31%) over control. NAR was strikingly differed by 32.72% under water stress in average. To support the water stress related depletion of moisture tension, plants recorded RWC with a ranges of 6.62% to 21.57% under stress than control. In balance of cellular dehydration rice seedlings were recorded 6.72% loss of proline, but up-regulated the release of free amino acids by 1.35 fold. In expression of generic potential for sub1A allele, the growth inhibition even under water deficit was evident from carbohydrate depletion by 10.93%, 11.42% and 24.35% through days of treatments. This was supported by depletion of apoplastic and cellular invertase activities by 90.90% and 72.91%. The possibility for sub1A in tolerance of deficit water status in rice culture has been discussed in more details.

关键词： sub1A Rice Water Deficit Growth Metabolism

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