1. 75th Foundation Day of CSIR-National Physical Laboratory: Celebration of Achievements in Metrology for National Growth

   • Sanjay Yadav
   • Goutam Mandal
   • D. K. Aswal

   Review Paper 11 May 2021 Pages: 1 - 32

   

2. COVID-19: Journey so far and Deep Insight Using Crowdsourced Data in India

   • Indu Tyagi
   • Yasser Mahfooz
   • Ansar Anjum

   Original Article 03 January 2021 Pages: 33 - 46

   

3. Characterization of Melt Flow Index of Commercial Polystyrene Using Data from Interlaboratory Comparison

   • A. Abdel-Hakim
   • Ahmed M. Al-harbi
   • A. M. Sadek

   Original Paper 08 October 2020 Pages: 47 - 58

   

4. Indigenous Design and Development of Gated Photon Counter for Low-Rate Photon Regime

   • Rashtrapriya Kumar Kapri
   • Parag Sharma
   • P. K. Dubey

   Original Paper 06 May 2021 Pages: 59 - 66

   

5. Performance Analysis of Moth Flame Optimization-Based Split-Range PID Controller

   • Vishal Vishnoi
   • Sheela Tiwari
   • Rajesh Singla

   Original Article 10 June 2020 Pages: 67 - 79

   

6. The Traceability Improvement and Comparison of Bell Prover as the Indonesian National Standard of Gas Volume Flow Rate

   • J. A. Prakosa
   • C. M. Su
   • N. C. E. Darmayanti

   Original Paper 26 October 2020 Pages: 81 - 87

   

7. Photometric Measurements on Sloped Areas by a New Conical–Elliptical Surface Element

   • Mohammad Davoud Talebzadeh
   • Marzieh Khademalrasool
   • Hossein Kasiri

   Original Paper 17 November 2020 Pages: 89 - 95

   

8. Elastic, Mechanical and Ultrasonic Properties of Nanostructured IIIrd Group Phosphides

   • Sudhanshu Tripathi
   • Rekha Agarwal
   • Devraj Singh

   Original Paper 17 December 2020 Pages: 97 - 107

   

9. Effect of Cross-Polarization in the Absorption of Metatmaterial Absorber

   • Xinru Kong
   • Rina Dao
   • Haiming Li

   Original Paper 27 April 2021 Pages: 109 - 114

   

10. Improved Measurement Capabilities in Pneumatic Pressure Measurements at NPLI Through Re-establishment of the Traceability Chain

    • Jasveer Singh
    • Om Prakash
    • Nita Dilawar Sharma

    Original Paper 16 October 2020 Pages: 115 - 128

    

11. Preparation and Certification of Indian Reference Material of Bituminous Coal

    • Tarit Baran Das
    • U. S. Chattopadhyay
    • P. K. Singh

    Original Article 26 October 2020 Pages: 129 - 138

    

12. Assessment of Qualitative Characteristics of Carbon Dioxide Respiration Rates Evaluation in Wheat Measurements

    • Edita Raudienė
    • Darius Gailius
    • Asta Meškuotienė

    Case Report 11 June 2020 Pages: 139 - 145

    

13. New Soil Reference Material Validation for Trace and Rare-Earth Elements by High-Resolution Inductively Coupled Plasma Mass Spectrometry

    • K. Kiruba
    • M. Satyanarayanan
    • G. Vamsi Krishna

    Case Report 21 October 2020 Pages: 147 - 156

    

14. Devices for Interim Check of Coordinate Measuring Machines: A Systematic Review

    • Rodrigo Schons Arenhart
    • Morgana Pizzolato
    • Luiza Hoch

    Review Paper 18 January 2021 Pages: 157 - 173

    

15. Analysis of Fuel’s Amount Measurement Process and Its Reliability in Commercial Transaction

    • A. Meškuotienė
    • P. Kaškonas
    • B. G. Urbonavičius

    Review Paper 07 October 2020 Pages: 175 - 185

    

16. Uncertainty in Analytical Measurements: Approaches, Evaluation Methods and Their Comparison Based on a Case Study of Arsenic Determination in Rice

    • Mehdi Nabi
    • Sayed Mehdi Ghoreishi
    • Mohsen Behpour

    Review Paper 02 February 2021 Pages: 187 - 192

    

17. Demonstration of Microstrip Sensor for the Feasibility Study of Non-invasive Blood-Glucose Sensing

    • Satish
    • Kushal Sen
    • Sneh Anand

    Short Communication 26 September 2020 Pages: 193 - 199

    

18. Significance of Reference Materials for Calibration of Powder X-ray Diffractometer

    • Manju Kumari
    • N. Vijayan
    • R. P. Pant

    Short Communication 18 January 2021 Pages: 201 - 210