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  1. Article: Size Composition, Exploitation Structure and Sex Ratio of Clupisoma garua (Hamilton) from Middle Stretch of the Ganga River at Allahabad, India

    Gopesh, A. / Tripathi, Sarita / Joshi, K. D. / Dwivedi, A. C.

    National Academy science letters. 2021 Aug., v. 44, no. 4

    2021  

    Abstract: Clupisoma garua is a medium-sized freshwater catfish with very high market value in Indian sub-continent. Besides immense food value, the fish is also known as a game fish. The fish samples for this study were randomly collected from middle stretch of ... ...

    Abstract Clupisoma garua is a medium-sized freshwater catfish with very high market value in Indian sub-continent. Besides immense food value, the fish is also known as a game fish. The fish samples for this study were randomly collected from middle stretch of the river Ganga at Allahabad during July 2014–June 2015. The size composition of the samples varied from 135 to 446 mm. The maximum exploitation was observed in 171–210 mm size group (29.04%), while minimum in 411–450 mm (0.83%) in stock samples. In general, lower size groups were highly exploited compared to middle and higher size groups. Male population dominates over females in 211–250, 251–290 and 331–370 mm size groups, in contrary, female was dominant in size groups from 131–170, 171–210 and 291–330 mm.
    Keywords Clupisoma ; catfish ; females ; freshwater ; game fish ; males ; market value ; nutritive value ; rivers ; sex ratio ; India
    Language English
    Dates of publication 2021-08
    Size p. 309-311.
    Publishing place Springer India
    Document type Article
    ZDB-ID 2677544-X
    ISSN 2250-1754 ; 0250-541X
    ISSN (online) 2250-1754
    ISSN 0250-541X
    DOI 10.1007/s40009-020-01011-0
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Optical phase extractions based on reassigned continuous wavelet transform with application to simultaneous displacement and velocity measurement.

    Sur, Amit / Joshi, K D / Sharma, Archana / Kaushik, T C

    The Review of scientific instruments

    2020  Volume 91, Issue 1, Page(s) 15001

    Abstract: Instantaneous frequency extraction of a highly nonstationary optical interferometric fringe signal using continuous wavelet transform with Morlet wavelet often fails in the neighborhood of the null phase gradient. The present work reports that the ... ...

    Abstract Instantaneous frequency extraction of a highly nonstationary optical interferometric fringe signal using continuous wavelet transform with Morlet wavelet often fails in the neighborhood of the null phase gradient. The present work reports that the optimal selection of the central frequency and time variance of the Morlet wavelet reduces the spread of wavelet energy to its adjacent bins, and the reassignment technique further sharpens the energy density and enhances accuracy of the extracted instantaneous frequency of the fringe signal. The developed algorithm is applied to a sinusoidal frequency-modulated fringe signal for which the mean square error percentage in normalized instantaneous frequency is determined to be 0.0032 Hz, which is significantly less than 0.0507 Hz obtained with a conventional continuous wavelet transform. Results are also compared with the existing phase stepping technique and found to be more accurate and free from any ripple like nonlinear error for sinusoidal fringe signals. The proposed technique is applied to a fringe signal obtained with a Michelson interferometer, generating displacement profiles that show advantages over those produced by the phase stepping technique. The applicability of the proposed technique is further extended to an arbitrary phase signal.
    Language English
    Publishing date 2020-02-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/1.5092252
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 4' 46/112: Show issues

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  3. Article ; Online: Comprehensive Monte Carlo study of patient doses from cone-beam CT imaging in radiotherapy.

    Marchant, T E / Joshi, K D

    Journal of radiological protection : official journal of the Society for Radiological Protection

    2016  Volume 37, Issue 1, Page(s) 13–30

    Abstract: Accurate knowledge of ionizing radiation dose from cone-beam CT (CBCT) imaging in radiotherapy is important to allow concomitant risks to be estimated and for justification of imaging exposures. This study uses a Monte Carlo CBCT model to calculate ... ...

    Abstract Accurate knowledge of ionizing radiation dose from cone-beam CT (CBCT) imaging in radiotherapy is important to allow concomitant risks to be estimated and for justification of imaging exposures. This study uses a Monte Carlo CBCT model to calculate imaging dose for a wide range of imaging protocols for male and female patients. The Elekta XVI CBCT system was modeled using GATE and simulated doses were validated against measurements in a water tank and thorax phantom. Imaging dose was simulated in the male and female ICRP voxel phantoms for a variety of anatomical sites and imager settings (different collimators, filters, full and partial rotation). The resulting dose distributions were used to calculate effective doses for each scan protocol. The Monte Carlo simulated doses agree with validation measurements within 5% and 10% for water tank and thorax phantom respectively. Effective dose for head CBCT scans was generally lower for scans centred on the pituitary than the larynx (0.03 mSv versus 0.06 mSv for male ICRP phantom). Pelvis CBCT scan effective dose was higher for the female than male phantom (5.11 mSv versus 2.80 mSv for M15 collimator scan), principally due to the higher dose received by gonads for the female scan. Medium field of view thorax scan effective doses ranged from 1.38-3.19 mSv depending on scan length and phantom sex. Effective dose for half rotation thorax scans with offset isocentre varied by almost a factor of three depending on laterality of the isocentre, patient sex and imaged field length. The CBCT imaging doses simulated here reveal large variations in dose depending on imaging isocentre location, patient sex and partial rotation angles. This information may be used to estimate risks from CBCT and to optimize CBCT imaging protocols.
    MeSH term(s) Computer Simulation ; Cone-Beam Computed Tomography ; Female ; Humans ; Male ; Monte Carlo Method ; Phantoms, Imaging ; Radiation Dosage ; Radiotherapy, Image-Guided ; Software
    Language English
    Publishing date 2016-12-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 639411-5
    ISSN 1361-6498 ; 0952-4746
    ISSN (online) 1361-6498
    ISSN 0952-4746
    DOI 10.1088/1361-6498/37/1/13
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1886: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  4. Article ; Online: Accuracy of radiotherapy dose calculations based on cone-beam CT: comparison of deformable registration and image correction based methods.

    Marchant, T E / Joshi, K D / Moore, C J

    Physics in medicine and biology

    2018  Volume 63, Issue 6, Page(s) 65003

    Abstract: Radiotherapy dose calculations based on cone-beam CT (CBCT) images can be inaccurate due to unreliable Hounsfield units (HU) in the CBCT. Deformable image registration of planning CT images to CBCT, and direct correction of CBCT image values are two ... ...

    Abstract Radiotherapy dose calculations based on cone-beam CT (CBCT) images can be inaccurate due to unreliable Hounsfield units (HU) in the CBCT. Deformable image registration of planning CT images to CBCT, and direct correction of CBCT image values are two methods proposed to allow heterogeneity corrected dose calculations based on CBCT. In this paper we compare the accuracy and robustness of these two approaches. CBCT images for 44 patients were used including pelvis, lung and head & neck sites. CBCT HU were corrected using a 'shading correction' algorithm and via deformable registration of planning CT to CBCT using either Elastix or Niftyreg. Radiotherapy dose distributions were re-calculated with heterogeneity correction based on the corrected CBCT and several relevant dose metrics for target and OAR volumes were calculated. Accuracy of CBCT based dose metrics was determined using an 'override ratio' method where the ratio of the dose metric to that calculated on a bulk-density assigned version of the same image is assumed to be constant for each patient, allowing comparison to the patient's planning CT as a gold standard. Similar performance is achieved by shading corrected CBCT and both deformable registration algorithms, with mean and standard deviation of dose metric error less than 1% for all sites studied. For lung images, use of deformed CT leads to slightly larger standard deviation of dose metric error than shading corrected CBCT with more dose metric errors greater than 2% observed (7% versus 1%).
    MeSH term(s) Algorithms ; Cone-Beam Computed Tomography/methods ; Head and Neck Neoplasms/diagnostic imaging ; Head and Neck Neoplasms/radiotherapy ; Humans ; Lung Neoplasms/diagnostic imaging ; Lung Neoplasms/radiotherapy ; Pelvic Neoplasms/diagnostic imaging ; Pelvic Neoplasms/radiotherapy ; Phantoms, Imaging ; Radiometry/methods ; Radiotherapy Dosage ; Radiotherapy Planning, Computer-Assisted/methods
    Language English
    Publishing date 2018-03-12
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 208857-5
    ISSN 1361-6560 ; 0031-9155
    ISSN (online) 1361-6560
    ISSN 0031-9155
    DOI 10.1088/1361-6560/aab0f0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 199: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  5. Article ; Online: Choosing a surgical specialty.

    Joshi, K D

    Kathmandu University medical journal (KUMJ)

    2008  Volume 6, Issue 1, Page(s) 1

    MeSH term(s) Career Choice ; Humans ; Internship and Residency/organization & administration ; Specialties, Surgical
    Language English
    Publishing date 2008-01
    Publishing country Nepal
    Document type Editorial
    ISSN 1812-2078
    ISSN (online) 1812-2078
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Doctors as writers.

    Joshi, K D

    Kathmandu University medical journal (KUMJ)

    2008  Volume 6, Issue 1, Page(s) 145

    MeSH term(s) Humans ; Physicians ; Writing
    Language English
    Publishing date 2008-01
    Publishing country Nepal
    Document type Letter
    ISSN 1812-2078
    ISSN (online) 1812-2078
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Plastic surgery: the future.

    Joshi, K D

    Kathmandu University medical journal (KUMJ)

    2007  Volume 5, Issue 1, Page(s) 136–137

    MeSH term(s) Forecasting ; Humans ; Reconstructive Surgical Procedures/trends ; Surgery, Plastic/trends
    Language English
    Publishing date 2007-01
    Publishing country Nepal
    Document type Journal Article
    ISSN 1812-2078
    ISSN (online) 1812-2078
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Art of clinical teaching.

    Joshi, K D

    Kathmandu University medical journal (KUMJ)

    2007  Volume 5, Issue 3, Page(s) 293

    MeSH term(s) Education, Medical ; Humans ; Teaching
    Language English
    Publishing date 2007-07
    Publishing country Nepal
    Document type Editorial
    ISSN 1812-2078
    ISSN (online) 1812-2078
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Order via subito

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  9. Article ; Online: Avoidable problems.

    Joshi, K D

    Kathmandu University medical journal (KUMJ)

    2006  Volume 4, Issue 4, Page(s) 408

    MeSH term(s) Clinical Competence ; Communication ; Humans ; Malpractice/legislation & jurisprudence ; Nepal
    Language English
    Publishing date 2006-10
    Publishing country Nepal
    Document type Editorial
    ISSN 1812-2078
    ISSN (online) 1812-2078
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Hospitals for profit?

    Joshi, K D

    Kathmandu University medical journal (KUMJ)

    2006  Volume 4, Issue 3, Page(s) 268–269

    MeSH term(s) Health Services Needs and Demand ; Hospital Planning/organization & administration ; Hospitals, Proprietary/organization & administration ; Humans ; India ; Marketing of Health Services/organization & administration ; Nepal ; Pakistan
    Language English
    Publishing date 2006-07
    Publishing country Nepal
    Document type Editorial
    ISSN 1812-2078
    ISSN (online) 1812-2078
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Kategorien

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