Girish Chandra

@allduniv.ac.in

Associate Professor, Department of Statistics, Faculty of Science
university of allahabad

Girish Chandra


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https://researchid.co/gchandra23

EDUCATION

MSc, Ph.D.

RESEARCH INTERESTS

Statistics, Probability theory, Forestry statistics, applied statistics
18

Scopus Publications

609

Scholar Citations

12

Scholar h-index

16

Scholar i10-index

Scopus Publications

  • Morphometric variations of human mandible in the Indian population: comparison between healthy and ankylosed temporomandibular joints
    Girish Chandra, Rajdeep Ghosh, Kamalpreet Kaur, Ajoy Roychoudhury, Sudipto Mukherjee, et al.
    Journal of Cranio Maxillofacial Surgery, 2026
  • Why detailed modeling matters in the FE-based pre-clinical evaluation of temporomandibular joint implants
    Girish Chandra, Rajdeep Ghosh, Vivek Verma, Kamalpreet Kaur, Ajoy Roychoudhury, et al.
    Journal of Cranio Maxillofacial Surgery, 2026
  • Biomechanical Assessment of Femur Fracture Fixation Using Modified Locking Compression Plate Made of Biodegradable and Non-Biodegradable Materials Under Physiological Loading During Healing Phases
    Girish Chandra, Rajdeep Ghosh, Vivek Verma
    Journal of Biomedical Materials Research Part B Applied Biomaterials, 2026
    Transverse femoral fractures heal through a complex secondary healing process, often stabilized using locking compression plates (LCPs) that maintain compression across an interfragmentary gap. Conventional LCPs made of non‐biodegradable Ti‐alloys provide adequate mechanical support but can induce stress‐shielding in newly formed callus and bone, necessitating revision surgeries. To address this, Mg‐based biodegradable LCPs have been actively investigated. However, their clinical translation and commercial adoption remain limited, primarily due to concerns regarding their lower mechanical strength and fixation stability compared to Ti‐alloys. Embossed structure‐based LCP (ELCP) was designed previously to enhance its mechanical performance. However, its biomechanical feasibility under physiological loading across different fracture healing phases has not yet been systematically evaluated. In the present study, fractured femur models for two fixation strategies, a conventional LCP (M2) and the ELCP (M3), were developed. These strategies were tested using three candidate biomaterials (one non‐biodegradable material, Ti‐alloy, and two biodegradable materials, Mg‐alloy and PLA/50% Mg composite). Three physiological loading conditions corresponding to the healing and early repair phases were applied. The results showed that although Ti‐alloy‐based conventional LCPs provided superior fixation strength, Mg‐alloy‐based ELCPs also performed substantially better than conventional LCPs, as reflected by high safety factors ranging from 1.81 to 3.42, unlike composite‐based plates. Moreover, Mg‐alloy‐based ELCPs exhibited higher interfragmentary strain (within or above the ideal strain range) in the callus compared to Ti‐alloy‐based LCPs, which might promote faster callus strengthening. Thus, Mg‐alloy‐based ELCPs could represent a viable alternative to conventional LCPs by offering adequate fixation strength while potentially reducing stress‐shielding.
  • Biomechanical evaluation of temporomandibular joint implants and periprosthetic bone under unilateral and bilateral clenching
    Rajdeep Ghosh, Girish Chandra, Vivek Verma, Kamalpreet Kaur, Ajoy Roychoudhury, et al.
    Proceedings of the Institution of Mechanical Engineers Part H Journal of Engineering in Medicine, 2025
    To ensure the long-term success of temporomandibular joint (TMJ) implants, it is imperative to understand their biomechanical performances. This study aims to compare the biomechanical performance of two stock implants (narrow and standard) under unilateral and bilateral clenching during both osseointegrated and non-osseointegrated conditions. Finite element models of a human mandible were developed from QCT data, with the left TMJ being replaced by the implants. Six clenching tasks were simulated to evaluate stress and strain distributions in the mandible and implants. Ipsilateral clenching produced higher mandibular strains, while contralateral clenching generated larger implant stresses. Furthermore, intercuspal biting was found to have produced the highest strain (1750–1880 µε) and stress (∼17 MPa) in the mandible. Osseointegration reduced stresses (up to 0.14 MPa) and strains (up to 30 µε) in mandible as well as stresses in mandibular components (up to 48 MPa) and screws (up to 71 MPa). However, during non-osseointegrated conditions, stresses in cortical bone were higher for standard TMJ implant as compared to narrow implant. This suggests possible preference of narrow implant over standard ones.
  • Finite element method-based simulation on bone fracture fixation configuration factors for biodegradable embossed locking compression plate
    Girish Chandra, Ajay Pandey, Ashish Kumar Singh, Gourav Singh, Nilesh Tipan
    Computer Methods in Biomechanics and Biomedical Engineering, 2024
    As an evolution, biodegradable implants need to maximize mechanical performance thereby may lead to confusion in selection of the biodegradable material and implant design to the fracture site. This requires selecting a unique fixation configuration to fit within the fractured bone, factors of which can be bone-plate clearance, interfragmentary gap, alteration in screw fixation position and variation in the number of screws whose configuration optimization can re-maximize the mechanical performance of the biodegradable implant. Therefore, these factors have been optimized based on the induced minimum stress using the finite element method-based simulation for which biodegradable embossed locking plates (BELCP) via screws made of Mg-alloy have been fitted over two fragments of femur body (as hollow cylindrical cortical bone). An average human weight of 62 kg is applied to one segment of the femur for all different configurations of each factor, where another segment is assumed to be fixed. By this simulation, the most optimal fixation configuration was found at a minimum induced stress value of 41.96 MPa which is approximately 85%, 18%, 6% and 48% respectively less than all maximum stress induced configurations in each of the factor. This optimized configuration was at the minimum clearance between bone and plate with a 3 mm interfragmentary gap using 8 screws where the locking screw begins to apply from the center of the BELCP. Overall, BELCP may be a better biodegradable implant plate for bone fracture fixation with these optimized fixation configurations as the improved mechanical performance after experimental validation.
  • Wear and frictional attributes of Al-alloy hybrid composite dispersed with hard-ceramic (ZrO2) and solid-lubricant (Gr) particles
    Ashish Kumar Singh, Sanjay Soni, Ravindra Singh Rana, Akshay Kumar, Girish Chandra, et al.
    Journal of Dispersion Science and Technology, 2024
  • Tribological Behavior of High-strength AA7068 Alloy: Effect of Artificial Aging Temperature
    Nanoworld Journal, 2023
  • Microstructure, Mechanical, in Vitro Biodegradation, and Antimicrobial Behavior of a Mg-Zn-Ca-Sr/ZrO2Composite Prepared Using Powder Metallurgy
    Girish Chandra, Ajay Pandey, Sarit Prabha, Khushhali M. Pandey
    ACS Applied Bio Materials, 2022
    Biodegradable materials, especially Mg alloys, have an exceptional advantage over nonbiodegradable materials in orthopedic applications, such as avoiding second surgery for removal/replacement, stress shielding, but not enough mechanical strength, and so forth. By further improving the Mg alloy to get all the remaining required properties, it can be used for better biodegradable implants, which depend adequately on material optimization, processing, and so forth. A Mg-Zn-Ca-Sr/ZrO2 composite has been prepared using powder metallurgy by adding 0, 1, 2, and 3 wt % of ZrO2, which also contains Zn, Ca, and Sr as nutrient elements. Microstructure characterization, as well as mechanical and in vitro biodegradation, have been investigated by hardness, compression, and immersion tests. The highest compressive strength, contraction, and hardness of about 185.6 MPa, 9.5%, and 65.2 HRB are observed in the 2% ZrO2-containing composite, respectively, whereas a minimum biodegradation rate of 2.76 mm/year is observed on the same. The antibiotic sensitivity observations against Staphylococcus aureus suggest that the alloy C3 has superior biological activity against the pathogen which ranks this alloy on top in merit. Overall, Mg-Zn-Ca-Sr/ZrO2 exhibits impressive potential for use as a biodegradable and antibiotic material for orthopedic applications.
  • Biomechanical evaluation on a novel design of biodegradable embossed locking compression plate for orthopaedic applications using finite element analysis
    Girish Chandra, Ajay Pandey
    Biomechanics and Modeling in Mechanobiology, 2022
  • Effectiveness of non-uniform thickness on a locking compression plate used as a biodegradable bone implant plate
    Gourav Singh, Ajay Pandey, Girish Chandra
    Journal of Biomaterials Applications, 2022
    Conventional locking compression plate (LCP) made of non-biodegradable materials are well-known bone implants for internal fracture fixation because of their proven experimental success. LCP, however, is mechanically underpowered when made up of biodegradable materials (even with Mg-alloy). The biodegradable implant plate should not only exhibit adequate mechanical performance during implantation but also perform well after fracture, at least until complete healing of the fractured bone. With the aim of achieving enhanced mechanical performance, the design of the LCP has been modified to the design of Biodegradable Locking Compression Plate (BLCP) by adding a suitable thickness in the middle (only 4.6% of the total volume of the LCP), which may help retain some additional strength during implantation and after degradation. Both BLCP and LCP have been comparatively analyzed via FEM with the aid of axial compression and four-point bending tests. BLCP has a better mechanical capability of withstanding loads in its degraded form than in its non-degradable form. Furthermore, BLCP is up to 15.83% mechanically better in the non-degraded form as compared to LCP, which again becomes up to 100% more mechanically adequate in the degraded forms of BLCP than in LCP. BLCP is found safe for degradation up to 2 mm or 6 months with an estimated degradation rate of 4 mm/year, which may allow it to support fractured bone for at least the standard healing time. BLCP can be considered as a superior biodegradable bone implant plate after experimental assurance with the physiological environment and may replace LCP.
  • Preparation Strategies for Mg-Alloys for Biodegradable Orthopaedic Implants and Other Biomedical Applications: A Review
    G. Chandra, A. Pandey
    Irbm, 2022
  • Effectiveness of laddered embossed structure in a locking compression plate for biodegradable orthopaedic implants
    Girish Chandra, Ajay Pandey
    Journal of Biomaterials Applications, 2022
  • Longitudinally centered embossed structure in the locking compression plate for biodegradable bone implant plate: a finite element analysis
    Girish Chandra, Ajay Pandey, Nilesh Tipan
    Computer Methods in Biomechanics and Biomedical Engineering, 2022
  • Femur Bone Implant Plate Design Analysis Under Varying Fracture Conditions
    Nilesh Tipan, Ajay Pandey, Girish Chandra
    Lecture Notes in Mechanical Engineering, 2022
  • Design and analysis of biodegradable buttress threaded screws for fracture fixation in orthopedics: A finite element analysis
    Girish Chandra, Ajay Pandey
    Biomedical Physics and Engineering Express, 2021
  • Design approaches and challenges for biodegradable bone implants: a review
    Girish Chandra, Ajay Pandey
    Expert Review of Medical Devices, 2021
  • Design of a biodegradable plate for femoral shaft fracture fixation
    Girish Chandra, Ajay Pandey, Sushrut Pandey
    Medical Engineering and Physics, 2020
  • Biodegradable bone implants in orthopedic applications: a review
    Girish Chandra, Ajay Pandey
    Biocybernetics and Biomedical Engineering, 2020

RECENT SCHOLAR PUBLICATIONS

  • Extreme order statistics based inference for Weibull distribution under Ranked Set Sampling with application to time-to-event data
    T Yadav, G Chandra, P Singh
    Life Cycle Reliability and Safety Engineering, 1-18 , 2025
    2025
  • Contouring of an indistinct sex ratio and COVID-19 threat to the sustainability of Myrica esculenta in the Northwestern Himalayas
    S Panwar, G Chandra, HS Ginwal, S Pandey, RK Meena, MS Bhandari
    Vegetos 38 (5), 2035-2044 , 2025
    2025
  • An in-silico approach to establish evolutionary relationship among the cold-regulated genes ( COR s) for understanding cold stress response in Eucalyptus
    A Malakar, S Barthwal, G Chandra
    Discover Forests 1 (1), 31 , 2025
    2025
  • Estimation of Location and Scale Parameters of Lognormal Distribution Using Median with Extreme Ranked Set Sampling: N. Tiwari et al.
    N Tiwari, G Chandra, S Bhari, J Banerjie
    Sankhya B 87 (1), 76-102 , 2025
    2025
    Citations: 1
  • Ecosystem productivity and carbon dynamics in Keibul Lamjao National Park, Manipur, India: a gray relational analysis perspective
    KB Meetei, M Tsopoe, G Chandra, D Mukhopadhyay, K Giri
    Environmental Monitoring and Assessment 197 (2), 140 , 2025
    2025
    Citations: 7
  • VOLUME ESTIMATION MODELS FOR QUERCUS SERRATA AND PINUS KESIYA USING NON-DESTRUCTIVE TECHNIQUES. A CASE STUDY FROM NORTHEAST INDIA
    K Giri, G Chandra, RSC Jayaraj, G Mishra, EN Chanu
    WOOD RESEARCH 70 (3), 515-526 , 2025
    2025
  • Ranked Set Sampling Model for Response Estimation of Developmental Programs with Exponential Impacts
    N Tiwari, G Chandra, S Bhari
    2025
  • Impact of Shifting Cultivation on Phyto-diversity (Vegetation) under Different Land use Systems in Serchhip District, Mizoram, India.
    R Lalnungrenga, G Chandra, M Sankar, E Lalruatsangi, K Premkumar
    Ecology, Environment & Conservation (0971765X) 30 , 2024
    2024
    Citations: 1
  • Adaptive cluster sampling based on balanced sampling plan excluding contiguous units
    N Tiwari, J Banerjie, G Chandra, S Bhari
    Communications in Statistics-Theory and Methods 53 (15), 5364-5377 , 2024
    2024
    Citations: 2
  • Weighted ranked set sampling for skewed distributions
    DS Bhoj, G Chandra
    Mathematics 12 (13), 2023 , 2024
    2024
    Citations: 4
  • Can Forest Fire Cognizance Garner Community Support for Fire Prevention? Evidence from the Sal Forest of Northern India
    N Krishnambika, G Chandra, M Thiyaharajan, BM Dimri
    Human Ecology 52 (3), 579-589 , 2024
    2024
    Citations: 1
  • Ratio Type Estimator for Balanced Sampling Plan excluding Adjacent Units
    N Tiwari, J Banerjie, G Chandra, S Bhari
    International Journal of Statistical Sciences 24 (1), 103-114 , 2024
    2024
  • Population and Production of Seed of Buchanania lanzan Spreng in Dhenkanal Forest Division of Odisha, India
    G Chandra, BP Tampta, M Mohanti, A Pandey, R Latpate
    The Indian Forester 149 (11) , 2024
    2024
  • Tree genome databases: a new era in the development of cyber-infrastructures for forest trees
    A Malakar, G Chandra, S Barthwal
    Genomics data analysis for crop improvement, 285-308 , 2024
    2024
    Citations: 4
  • Genomics Data Analysis for Crop Improvement
    P Anjoy, K Kumar, G Chandra, K Gaikwad
    Springer Nature Singapore 1, 443 , 2023
    2023
    Citations: 6
  • Phenotypic, Geological, and Climatic Spatio-Temporal Analyses of an Exotic Grevillea robusta in the Northwestern Himalayas
    A Dabral, R Shankhwar, MAC Martins-Ferreira, S Pandey, R Kant, ...
    Sustainability 15 (16), 12292 , 2023
    2023
    Citations: 6
  • Favourable Allocation Models for Symmetric Distributions in Ranked Set Sampling
    N Tiwari, G Chandra, R Nautiyal
    JOURNAL OF THE INDIAN SOCIETY OF AGRICULTURAL STATISTICS 77 (1), 89-94 , 2023
    2023
    Citations: 1
  • Ranked set sampling with lowest order statistics for Pareto distribution
    DS Bhoj, G Chandra
    Communications in Statistics-Simulation and Computation 52 (6), 2327-2335 , 2023
    2023
    Citations: 8
  • Synthesis of pine needle cyanoethyl cellulose using Taguchi L25 orthogonal array
    T Ansari, G Chandra, PK Gupta, G Joshi, V Rana
    Industrial Crops and Products 191, 115973 , 2023
    2023
    Citations: 21
  • Effect of Prana vidya practices on cognitive abilities of adolescents: A randomized control trial
    P Prabhu, P Gowda, G Chandra
    Journal of Applied Consciousness Studies 11 (1), 12-21 , 2023
    2023
    Citations: 1

MOST CITED SCHOLAR PUBLICATIONS

  • Advanced sampling methods
    R Latpate, J Kshirsagar, VK Gupta, G Chandra
    Springer , 2021
    2021
    Citations: 99
  • Effect of boron and zinc fertilization on growth and yield of cowpea (Vigna unguiculata Walp.) in Inceptisols of Arunachal Pradesh
    P Debnath, SK Pattanaaik, D Sah, G Chandra, AK Pandey
    Journal of the Indian Society of Soil Science 66 (2), 229-234 , 2018
    2018
    Citations: 51
  • Simple random sampling
    R Latpate, J Kshirsagar, V Kumar Gupta, G Chandra
    Advanced sampling methods, 11-35 , 2021
    2021
    Citations: 39
  • Prediction Mapping Through Maxent Modeling Paves the Way for the Conservation of Rhododendron arboreum in Uttarakhand Himalayas
    MS Bhandari, RK Meena, R Shankhwar, C Shekhar, J Saxena, R Kant, ...
    Journal of the Indian Society of Remote Sensing 48 (3), 411-422 , 2020
    2020
    Citations: 39
  • Synthesis of pine needle cyanoethyl cellulose using Taguchi L25 orthogonal array
    T Ansari, G Chandra, PK Gupta, G Joshi, V Rana
    Industrial Crops and Products 191, 115973 , 2023
    2023
    Citations: 21
  • A grey relational model for soil erosion vulnerability assessment in subwatershed of lesser Himalayan region
    S Pandey, R Nautiyal, P Kumar, G Chandra, VP Panwar
    Catena 210, 105928 , 2022
    2022
    Citations: 21
  • Probability proportional to size sampling
    R Latpate, J Kshirsagar, V Kumar Gupta, G Chandra
    Advanced sampling methods, 85-98 , 2021
    2021
    Citations: 18
  • Stratified random sampling
    R Latpate, J Kshirsagar, V Kumar Gupta, G Chandra
    Advanced Sampling Methods, 37-53 , 2021
    2021
    Citations: 16
  • A comparative study on grey relational analysis and C5.0 classification algorithm on adventitious rhizogenesis of Eucalyptus
    R Saha, HS Ginwal, G Chandra, S Barthwal
    Trees 35 (1), 43-52 , 2021
    2021
    Citations: 15
  • Integrated assessment of adventitious rhizogenesis in Eucalyptus : root quality index and rooting dynamics
    R Saha, HS Ginwal, G Chandra, S Barthwal
    Journal of Forestry Research 31 (6), 2145-2161 , 2020
    2020
    Citations: 13
  • Evaluation of Chemical and Physical Properties of Commercial Sandalwood Essential Oils and their Comparison with Essential Oil Extracted from Santalum album L
    SS Bisht, G Chandra, M Ravindra, R Kumar
    Journal of Essential Oil Bearing Plants 23 (2), 345-355 , 2020
    2020
    Citations: 13
  • Simple unequal allocation procedure for ranked set sampling with skew distributions
    D Bhoj, G Chandra
    Journal of Modern Applied Statistical Methods 18 (2), 22 , 2020
    2020
    Citations: 13
  • A systematic procedure for unequal allocation for skewed distributions in ranked set sampling
    N Tiwari, G Chandra
    Journal of the Indian Society of Agricultural Statistics 65 (3), 331-338 , 2011
    2011
    Citations: 12
  • Chromatographic and spectrophotometric analysis of heartwood extracts of four Pterocarpus species
    SS Bisht, K Mishra, KK Pandey, G Chandra, MM Nayak, S Shashikala
    Wood Science and Technology 56 (2), 459-476 , 2022
    2022
    Citations: 11
  • Critical limit of available Boron for rice under red and laterite zone of West Bengal, India
    P Debnath, G Chandra, SK Ghosh
    SAARC journal of Agriculture 7 (1), 99-105 , 2009
    2009
    Citations: 11
  • Adaptive cluster sampling-based design for estimating COVID-19 cases with random samples
    G Chandra, N Tiwari, R Nautiyal
    Current Science 120 (7), 1202-1210 , 2021
    2021
    Citations: 10
  • Valuating intangible benefits from afforested areas: A case study in India
    A Jaina, G Chandrab, R Nautiyal
    Economía agraria y recursos naturales 17 (1), 89-100 , 2017
    2017
    Citations: 9
  • An Overview of small area estimation techniques
    H Chandra, G Chandra
    Statistics in Forestry: Methods and Applications, 45-54 , 2015
    2015
    Citations: 9
  • Ranked set sampling with lowest order statistics for Pareto distribution
    DS Bhoj, G Chandra
    Communications in Statistics-Simulation and Computation 52 (6), 2327-2335 , 2023
    2023
    Citations: 8
  • Root distribution, orientation and root length density modelling in Eucalyptus and evaluation of associated water use efficiency
    R Saha, HS Ginwal, G Chandra, S Barthwal
    New Forests 51 (6), 1023-1037 , 2020
    2020
    Citations: 8