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Co-Authors
- Sandeep Salodkar
- Suprakash Patra
- B. Bhattacharya
- B. Bhattacharyya
- R. Suresh
- M. S. Rao
- N. P. Waghmare
- A. K. Pal
- K. K. Yadav
- N. Chouhan
- R. Thubstan
- S. Norlha
- J. Hariharan
- C. Borwankar
- P. Chandra
- V. K. Dhar
- N. Mankuzhyil
- S. Godambe
- M. Sharma
- K. Venugopal
- K. K. Singh
- N. Bhatt
- S. Bhattacharyya
- K. Chanchalani
- M. P. Das
- B. Ghosal
- S. Godiyal
- M. Khurana
- S. V. Kotwal
- M. K. Koul
- N. Kumar
- C. P. Kushwaha
- K. Nand
- A. Pathania
- S. Sahayanathan
- D. Sarkar
- A. Tolamati
- R. Koul
- R. C. Rannot
- A. K. Tickoo
- V. R. Chitnis
- A. Behere
- S. Padmini
- S. Joy
- P. M. Nair
- K. P. Jha
- S. Moitra
- S. Neema
- S. Srivastava
- M. Punna
- S. Mohanan
- S. S. Sikder
- A. Jain
- S. Banerjee
- Krati
- J. Deshpande
- V. Sanadhya
- G. Andrew
- M. B. Patil
- V. K. Goyal
- N. Gupta
- H. Balakrishna
- A. Agrawal
- S. P. Srivastava
- K. N. Karn
- P. I. Hadgali
- S. Bhatt
- V. K. Mishra
- P. K. Biswas
- R. K Gupta
- A. Kumar
- S. G. Thul
- R. Kalmady
- D. D. Sonvane
- V. Kumar
- U. K. Gaur
- J. Chattopadhyay
- S. K. Gupta
- A. R. Kiran
- Y. Parulekar
- M. K. Agrawal
- R. M. Parmar
- G. R. Reddy
- Y. S. Mayya
- C. K. Pithawa
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Manna, A.
- Experimental Investigation for Optimization of Machining Conditions During Turning of E0300 Alloy Steel
Abstract Views :161 |
PDF Views:0
Authors
Affiliations
1 Mechanical Engg. Deptt., Punjab Engineering College, (Deem University), Chandigarh-160012, IN
1 Mechanical Engg. Deptt., Punjab Engineering College, (Deem University), Chandigarh-160012, IN
Source
Manufacturing Technology Today, Vol 5, No 6 (2006), Pagination: 18-22Abstract
The paper describes the procedure to obtain the machining conditions for turning operation considering unit cost of production as an objective function. The optimality conditions for single point cutting operations are determined based on the objective function using dynamic programming technique. The optimal policy of machining conditions are determined for evolution of minimum cost considering the important cost related machining criteria such as actual machining time, tool reuse time, set up time, tool life, and tool changing time. The mathematical models are also developed considering the Krononbergs data used for standard turning operation. The effects of different constraints on the objective functions are analyzed through various graphical representations. In this study, the Taguchi method, a powerful tool for experiment design is also used to optimize the cutting parameters to achieve better surface finish characteristics and to identify the most effective parameter for cost evolution during turning. The developed optimality condition affects the economics of machining conditions. The graphical representations also help to understand and analyze the effects of various input constraints at the optimum point and their significant Influences on production cost. The analysis can propose an effective methodology in advance for proper setting of machining parameters in practice, which may reduce the cost of unit production.- Experimental Investigation for Optimization of CNC-Wire Cut EDM Parameters for Better Surface Finish During Machining of Pral/SIC-MMc
Abstract Views :158 |
PDF Views:0
Authors
A. Manna
1,
B. Bhattacharya
2
Affiliations
1 Mech. Engg. Deptt., Punjab Engineering College, Chandigarh-160012, IN
2 Production Engineering Department, Jadavpur University, Kolkata-700032, IN
1 Mech. Engg. Deptt., Punjab Engineering College, Chandigarh-160012, IN
2 Production Engineering Department, Jadavpur University, Kolkata-700032, IN
Source
Manufacturing Technology Today, Vol 3, No 9 (2004), Pagination: 16-19Abstract
In this investigation, Taguchi method is used to optimize the CNC-Wire cut-EDM parameters for effective machining of Ai-SiC MMC. From experimental results and through analysis of variance (ANOVA) and 'F' test values the significant factors are determined for surface roughness. Mathematical model relating to the machining performance criteria e.g. surface finish is established using Gauss elimination method for effective machining of AI/SiC-MMC. Confirmation test results show that the developed mathematical model is appropriate for effective machining of AI/SiC-MMC and the determined optimal combination of CNC-Wire cut-EDM parameters can also satisfy the real requirement in practice.- Gauss Elimination Method Based Mathematical Model for Gap Current in CNC-WEDM for Effective Machining of AlSiC MMC
Abstract Views :163 |
PDF Views:0
Authors
A. Manna
1,
B. Bhattacharya
2
Affiliations
1 Mech. Engg. Department, Punjab Engineering Coilege, Chandigarh -160012, IN
2 Production Engineering Department, Jadavpur University, Koikata-700032, IN
1 Mech. Engg. Department, Punjab Engineering Coilege, Chandigarh -160012, IN
2 Production Engineering Department, Jadavpur University, Koikata-700032, IN
Source
Manufacturing Technology Today, Vol 3, No 11 (2004), Pagination: 53-56Abstract
In the experimental study, Taguchi method, a powerful tool in the design of experiment is used to optimize the parametric combination of CNC-Wire cut-EDM for effective machining of Al-SiC MMC. From experimental results and through analysis of variance (ANOVA) the significant factors are determined for favorable gap current (Ig). Mathematical model relating to the gap current is established using Gauss elimination method for effective machining of AI/SiC-MMC. Confirmation test results show that the developed mathematical model is appropriate for effective machining of AI/SiC-MMC and the determined optimal combination of CNC-Wire cut-EDM parameters can also satisfy the real requirement in practice.- Optimization of CNC-Wire Cut EDM parameters during Machining of AI/SiC-MMC based on Robust Design
Abstract Views :150 |
PDF Views:0
Authors
A. Manna
1,
B. Bhattacharyya
1
Affiliations
1 Production Engineering Department, Jadavpur University, Koikata-700032, IN
1 Production Engineering Department, Jadavpur University, Koikata-700032, IN
Source
Manufacturing Technology Today, Vol 2, No 8-9 (2003), Pagination: 3-7Abstract
In the experimental study, Taguchi method, a powerful tool in the design of experiment, is used to optimize the CNC-Wire cut-EDM parameters for effective machining of Ai-SiC MMC. From experimental results and through analysis of variance (ANOVA) the significant factors are determined for metal removal rate. Mathematical model relating to the machining performance of WEDM is established using Gauss elimination method for effective machining of AI/SiC-MMC. Confirmation test results show that the developed mathematical model is appropriate for effective machining of Al/SiC MMC and the determined optimal combination of CNC-Wire cut-EDM parameters can also satisfy the real requirement in practice.- Working Mechanisnti of Firearm And Its Parts - A Foremsic Perspective
Abstract Views :163 |
PDF Views:1
Authors
Affiliations
1 Central Forensic Science Laboratory, Kolkata, IN
2 Chief Forensic Scientist, DFS, MHA, New Delhi, IN
3 Dept. of Physics, Jadavpur University, Kolkata, IN
1 Central Forensic Science Laboratory, Kolkata, IN
2 Chief Forensic Scientist, DFS, MHA, New Delhi, IN
3 Dept. of Physics, Jadavpur University, Kolkata, IN
Source
Indian Science Cruiser, Vol 23, No 5 (2009), Pagination: 42-46Abstract
Law enforcement agencies have relied upon the science of "forensic ballistics" to link fired bullets and cartridge cases to each other and to alleged firearms. At a crime scene, physical evidence is routinely encountered, for example, fired shells, bullets, gunpowder residues on the body or clothing of victims or perpetrators. These ar(> knowingly or unknowingly left by the culprits at the scene of occurrence. The underlying principle is that when a tool (firearm) acts on some object (cartridge) it will leave marks, which is unique due to the configuration of the firearm. The uniqueness of each weapon is a result of manufacturing processes and post manufacturing wear and damage. Every gun leaves its own unique microscopic markings on the surface areas of fired bullets and cartridge cases. Experts compare these markings in an effort to identify similarities that positively link them together, subsequently concluding that the ammunition components were fired from the same firearm. Experts who undertake examinations and studies in this field are referred as 'Ballistics Experts' or 'Firearm Examiner'. A ballistics expert employs basic scientific principles to propose a hypothesis of a shooting incident follov/ed by testing it through series of experiments, collects & compiles various data to form a logical conclusion and/or to offer expert opinion. In shooting incidents, it is often required to establish that whether it v^'as a case of suicide, homicide or accidental. This paper gives a basic knowledge about the understanding of working mechanism of firearms & ammunition and their method of identification, which may largely be benefited to invesligating officers (lOs), law enforcement agencies, students and other scientific community.Keywords
forensic ballistics, firearm identification, cartridge case, bullet, tool marks, crime scene, comparison microscope, ballistics expert.- Water detected in distant region of universe
Abstract Views :119 |
PDF Views:0
Authors
A. Manna
1
Affiliations
1 ISEC, IN
1 ISEC, IN
Source
Indian Science Cruiser, Vol 9, No 1 (1995), Pagination: 41-41Abstract
No Abstract.- Possible detection of dark matter
Abstract Views :95 |
PDF Views:0
Authors
A. Manna
1
Affiliations
1 ISEC, IN
1 ISEC, IN
Source
Indian Science Cruiser, Vol 9, No 1 (1995), Pagination: 41-41Abstract
No Abstract.- Baby fish born in space laboratory
Abstract Views :115 |
PDF Views:0
Authors
A. Manna
1
Affiliations
1 Ind Sc Cr, IN
1 Ind Sc Cr, IN
Source
Indian Science Cruiser, Vol 9, No 2 (1995), Pagination: 39-39Abstract
No Abstract.- International Conference on Arsenic in Ground Water : Cause, Effect and Remedy
Abstract Views :106 |
PDF Views:0
Authors
A. Manna
1
Affiliations
1 Indian Science Cruiser, IN
1 Indian Science Cruiser, IN
Source
Indian Science Cruiser, Vol 9, No 2 (1995), Pagination: 41-42Abstract
No Abstract.- Science of Firearm, Ammunition and Ballistics
Abstract Views :120 |
PDF Views:0
Authors
Affiliations
1 Central Forensic Science Laboratory, 30. Gorachand Road, Kolkala-700 014, IN
2 Directorate of Forensic Science, MHA, Govt of India, Lodhi Road, New Delhi - 110 003, IN
3 Department of Physics, Jadavpur University. Kolkata - 700 032, IN
1 Central Forensic Science Laboratory, 30. Gorachand Road, Kolkala-700 014, IN
2 Directorate of Forensic Science, MHA, Govt of India, Lodhi Road, New Delhi - 110 003, IN
3 Department of Physics, Jadavpur University. Kolkata - 700 032, IN
Source
Indian Science Cruiser, Vol 18, No 3 (2004), Pagination: 41-43Abstract
Homicide, suicide and accidental shooting are not common in India. In view of socioeconomic importance of such crime cases, thorough and proper investigation are required for their solutions. Rate of conviction in our country is very low compared to other countries. In the present article the authors have described the science of identification of firearms and their ammunitions which are used in shooting incidents.Keywords
No Keywords.- Commissioning of the MACE gamma-ray telescope at Hanle, Ladakh, India
Abstract Views :178 |
PDF Views:66
Authors
K. K. Yadav
1,
N. Chouhan
2,
R. Thubstan
2,
S. Norlha
2,
J. Hariharan
2,
C. Borwankar
2,
P. Chandra
2,
V. K. Dhar
1,
N. Mankuzhyil
2,
S. Godambe
2,
M. Sharma
2,
K. Venugopal
2,
K. K. Singh
1,
N. Bhatt
2,
S. Bhattacharyya
1,
K. Chanchalani
2,
M. P. Das
2,
B. Ghosal
2,
S. Godiyal
2,
M. Khurana
2,
S. V. Kotwal
2,
M. K. Koul
2,
N. Kumar
2,
C. P. Kushwaha
2,
K. Nand
2,
A. Pathania
2,
S. Sahayanathan
1,
D. Sarkar
2,
A. Tolamati
2,
R. Koul
3,
R. C. Rannot
4,
A. K. Tickoo
5,
V. R. Chitnis
6,
A. Behere
7,
S. Padmini
7,
A. Manna
7,
S. Joy
7,
P. M. Nair
7,
K. P. Jha
7,
S. Moitra
7,
S. Neema
7,
S. Srivastava
7,
M. Punna
7,
S. Mohanan
7,
S. S. Sikder
7,
A. Jain
7,
S. Banerjee
7,
Krati
7,
J. Deshpande
7,
V. Sanadhya
8,
G. Andrew
8,
M. B. Patil
8,
V. K. Goyal
8,
N. Gupta
8,
H. Balakrishna
8,
A. Agrawal
8,
S. P. Srivastava
9,
K. N. Karn
9,
P. I. Hadgali
9,
S. Bhatt
9,
V. K. Mishra
9,
P. K. Biswas
9,
R. K Gupta
9,
A. Kumar
9,
S. G. Thul
9,
R. Kalmady
10,
D. D. Sonvane
10,
V. Kumar
10,
U. K. Gaur
10,
J. Chattopadhyay
11,
S. K. Gupta
11,
A. R. Kiran
11,
Y. Parulekar
11,
M. K. Agrawal
11,
R. M. Parmar
11,
G. R. Reddy
12,
Y. S. Mayya
13,
C. K. Pithawa
14
Affiliations
1 Astrophysical Sciences Division, Bhabha Atomic Research Centre, Mumbai 400 085, India; Homi Bhabha National Institute, Mumbai 400 085, India, IN
2 Astrophysical Sciences Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
3 Formerly at Astrophysical Sciences Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
4 Raja Ramanna Fellow at Astrophysical Sciences Division, Mumbai 400 085, India, IN
5 Deceased, IN
6 Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400 005, India, IN
7 Electronics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
8 Control and Instrumentation Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
9 Center for Design and Manufacture, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
10 Computer Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
11 Reactor Safety Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
12 Formerly at Reactor Safety Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
13 Formerly at Reactor Control Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
14 Formerly at Electronics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
1 Astrophysical Sciences Division, Bhabha Atomic Research Centre, Mumbai 400 085, India; Homi Bhabha National Institute, Mumbai 400 085, India, IN
2 Astrophysical Sciences Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
3 Formerly at Astrophysical Sciences Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
4 Raja Ramanna Fellow at Astrophysical Sciences Division, Mumbai 400 085, India, IN
5 Deceased, IN
6 Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400 005, India, IN
7 Electronics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
8 Control and Instrumentation Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
9 Center for Design and Manufacture, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
10 Computer Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
11 Reactor Safety Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
12 Formerly at Reactor Safety Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
13 Formerly at Reactor Control Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
14 Formerly at Electronics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN
Source
Current Science, Vol 123, No 12 (2022), Pagination: 1428-1435Abstract
The MACE telescope has recently been commissioned at Hanle, Ladakh, India. It had its first light in April 2021 with a successful detection of very high energy gamma-ray photons from the standard candle Crab Nebula. Equipped with a large light collector of 21 m diameter and situated at an altitude of ~4.3 km amsl, the MACE telescope is expected to explore the mysteries of the non-thermal Universe in the energy range above 20 GeV with very high sensitivity. It can also play an important role in carrying out multi-messenger astronomy in India.Keywords
Gamma-ray astronomy, high energy radiative processes, non-thermal Universe, telescope.References
- Weekes, T. C. et al., Observation of TeV gamma rays from the crab nebula using the atmospheric Cerenkov imaging technique. Astro-phys. J., 1989, 342, 379–395.
- Ong, R. A., Very high energy gamma-ray astronomy. Phys. Rep., 1998, 305, 93–202.
- Hillas, A. M., Evolution of ground-based gamma-ray astronomy from the early days to the Cherenkov Telescope Arrays. Astropart.Phys., 2013, 43, 19–43.
- Chadwick, P., 35 Years of ground-based gamma-ray astronomy. Universe, 2021, 7, 432.
- http://tevcat.uchicago.edu (accessed on 15 July 2022).
- Fegan, D. J., Topical review: γ/hadron separation at TeV energies. J. Phys. G., 1997, 23, 1013–1060.
- Aharonian, F. et al., High energy astrophysics with ground-based gamma ray detectors. Rep. Prog. Phys., 2008, 71, 096901.
- Holder, J., Atmospheric Cherenkov gamma-ray telescopes; arXiv: 1510.05675.
- Di Sciascio, G., Ground-based gamma-ray astronomy: an introduc-tion. J. Phys., Conf. Ser., 2019, 1263, 012003.
- Koul, R. et al., The TACTIC atmospheric Cherenkov imaging tele-scope. Nucl. Instrum. Methods Phys. Res. A, 2007, 578, 548–564.
- Singh, K. K. and Yadav, K. K., 20 Years of Indian gamma ray as-tronomy using imaging Cherenkov telescopes and road ahead. Uni-verse, 2021, 7, 96.
- Singh, K. K., Gamma-ray astronomy with the imaging atmospheric Cherenkov telescopes in India. J. Astrophys. Astron., 2022, 43, 3.
- Ajello, M. et al., Fermi large area telescope performance after 10 years of operation. Astrophys. J. Suppl., 2021, 256, 12.
- Borwankar, C. et al., Simulation studies of MACE-I: trigger rates and energy thresholds. Astropart. Phys., 2016, 84, 97–106.
- Borwankar, C. et al., Estimation of expected performance for the MACE γ-ray telescope in low zenith angle range. Nucl. Instrum.Methods Phys. Res. A, 2020, 953, 163182.
- Sharma, M. et al., Sensitivity estimate of the MACE gamma ray telescope. Nucl. Instrum. Methods Phys. Res. A, 2017, 851, 125–131.
- Dhar, V. K. et al., Development of a new type of metallic mirrors for 21 meter MACE γ-ray telescope. J. Astrophys. Astron., 2022, 43, 17.
- Hillas, A. M., Cerenkov light images of EAS produced by primary gamma rays and by nuclei. In 19th International Cosmic Ray Con-ference, San Diego, CA, United States, 1985, vol. 3, p. 445.
- Li, T. P. and Ma, Y. Q., Analysis methods for results in gamma-ray astronomy. Astrophys. J., 1983, 272, 317–324.
- Yadav, K. K. et al., Status update of the MACE gamma-ray tele-scope. In Proceeding of Science, 37th International Cosmic Ray Conference, Berlin, Germany, 2021, p. 756.
- Albert, J. et al., VHE gamma-ray observation of the Crab Nebula and its pulsar with the MAGIC telescope. Astrophys. J., 2008, 674, 1037–1055.
- Tolamatti, A. et al., Feasibility study of observing γ-ray emission from high redshift blazars using the MACE telescope. J. Astrophys.Astron., 2022, 43, 49.
- Singh, K. K. et al., Probing the evolution of the EBL photon density out to z ∼ 1 via γ-ray propagation measurements with Fermi. Astro-phys. Space Sci., 2021, 366, 51