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Co-Authors
- T. Margret Rosy
- C. A. Rama Rao
- B. M. K. Raju
- A. V. M. Subba Rao
- K. V. Rao
- V. U. M. Rao
- Kausalya Ramachandran
- B. Venkateswarlu
- A. K. Sikka
- M. Srinivasa Rao
- Ch. Srinivasa Rao
- S. Shailaja
- V. Sathya
- Mukunda M. Gogoi
- S. Suresh Babu
- B. S. Arun
- K. Krishna Moorthy
- A. Ajay
- P. Ajay
- Arun Suryavanshi
- Arup Borgohain
- Anirban Guha
- Atiba Shaikh
- Binita Pathak
- Biswadip Gharai
- Boopathy Ramasamy
- G. Balakrishnaiah
- Harilal B. Menon
- Jagdish Chandra Kuniyal
- Jayabala Krishnan
- K. Rama Gopal
- Manish Naja
- Parminder Kaur
- Pradip K. Bhuyan
- Pratima Gupta
- Prayagraj Singh
- Priyanka Srivastava
- R. S. Singh
- Ranjit Kumar
- Shantanu Rastogi
- Shyam Sundar Kundu
- Sobhan Kumar Kompalli
- Subhasmita Panda
- Tandule Chakradhar Rao
- Trupti Das
- Yogesh Kant
- R. Sangeetha Piriya
- Rajamani M. Jayabalakrishnan
- Kovilpillai Boomiraj
- Sadish Oumabady
Journals
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
Maheswari, M.
- Design of an Improved Finite Impulse Response (FIR) Filter Using Vedic Multiplier
Abstract Views :175 |
PDF Views:4
Authors
Affiliations
1 Department of Electronics and Communication Engineering, K. Ramakrishnan College of Engineering, Tiruchirappalli, IN
2 Gnanamani Engineering College, Namakkal, IN
1 Department of Electronics and Communication Engineering, K. Ramakrishnan College of Engineering, Tiruchirappalli, IN
2 Gnanamani Engineering College, Namakkal, IN
Source
Programmable Device Circuits and Systems, Vol 7, No 4 (2015), Pagination: 113-118Abstract
FIR filter finds an extensive application in mobile communication. An efficient design of FIR filter makes it suitable for high speed mobile applications including software Defined Radio (SDR). In this paper, we propose an improved FIR filter using Vedic multiplier. First, high speed Vedic multiplier is designed and implemented using the technique of ancient Indian Vedic mathematics has been proposed to improve the performance of multiplier. Vedic mathematics has the distinctive technique of calculations based on 16 sutras. Among the 16 sutras, Urdhva Triyagbhyam has proved to provide better efficiency of the multiplication. Urdhva Triyagbhyam is the most efficient Sutra, giving minimum delay for all categories of numbers, like small or large. Using these sutra middle products are generated parallely and eliminates unnecessary multiplication steps that are done with zeros. The elimination of zeros increases the speed of the multiplier. Using Urdhva Triyagbhyam sutra,e 4x4, 8x8, 16x16 and 32x32 bit multiplier has been designed using verilog HDL and implemented on Spartan 3E FPGA kit. Finally, FIR Filter has been designed using this Vedic Multiplier. The performance of the proposed FIR filter has been compared with the FIR filter with normal multiplier. The proposed FIR filter achieves 15% improvement in area and 5% improvement in speed.
Keywords
Vedic Mathematics, Urdhva Tiryakbhyam Sutra, FIR Filter, Vedic Multiplier.
- A District Level Assessment of Vulnerability of Indian Agriculture to Climate Change
Abstract Views :267 |
PDF Views:93
Authors
C. A. Rama Rao
1,
B. M. K. Raju
1,
A. V. M. Subba Rao
1,
K. V. Rao
1,
V. U. M. Rao
1,
Kausalya Ramachandran
1,
B. Venkateswarlu
2,
A. K. Sikka
3,
M. Srinivasa Rao
1,
M. Maheswari
1,
Ch. Srinivasa Rao
1
Affiliations
1 ICAR-Central Research Institute for Dryland Agriculture, Hyderabad 500 059, IN
2 Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani 431 462, IN
3 Natural Resource Management Division, ICAR, New Delhi 110 012, IN
1 ICAR-Central Research Institute for Dryland Agriculture, Hyderabad 500 059, IN
2 Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani 431 462, IN
3 Natural Resource Management Division, ICAR, New Delhi 110 012, IN
Source
Current Science, Vol 110, No 10 (2016), Pagination: 1939-1946Abstract
Assessing vulnerability to climate change and variability is an important first step in evolving appropriate adaptation strategies to changing climate. Such an analysis also helps in targeting adaptation investments, specific to more vulnerable regions. Adopting the definition of vulnerability given by IPCC, vulnerability was assessed for 572 rural districts of India. Thirty eight indicators reflecting sensitivity, adaptive capacity and exposure were chosen to construct the composite vulnerability index. Climate projections of the PRECIS model for A1B scenario for the period 2021-2050 were considered to capture the future climate. The data on these indicators were normalized based on the nature of relationship. They were then combined into three indices for sensitivity, exposure and adaptive capacity, which were then averaged with weights given by experts, to obtain the relative vulnerability index. Based on the index, all the districts were divided into five categories with equal number of districts. One more district was added to 'very high' and 'high' categories. The analysis showed that districts with higher levels of vulnerability are located in the western and peninsular India. It is also observed that the highly fertile Indo-Gangetic Plains are relatively more sensitive, but less vulnerable because of higher adaptive capacity and lower exposure.Keywords
Agriculture, Adaptive Capacity and Exposure, Climate Change, Sensitivity, Vulnerability.Full Text
- Studies on Catalytic Oxidation of Glycollic Acid by PMS
Abstract Views :123 |
PDF Views:2
Authors
Source
International Journal of Innovative Research and Development, Vol 4, No 3 (2015), Pagination:Abstract
The kinetics of the reaction between peroxomonosulphate with glycolic acid was studied in the presence of Mn (II) in the pH range 4.05 to 4.75 at 304K. The reaction followed first order with respect to peroxomonosulphate. The rate of the reaction increases with the [Mn (II)] and independent with respect glycolic acid. A plot of kobs vs 1/ [H+] is a straight line passing through origin. Based on the results a rate equation, kinetic scheme and a most probable mechanism has been predicted.
Keywords
Alphahydroxy acid, glycolic acid, peroxomonosulphate, manganese (II)Full Text
- Nutrient Mineralization during the Application of Poultry Manure
Abstract Views :106 |
PDF Views:0
Authors
V. Sathya
1,
M. Maheswari
1
Affiliations
1 Department of Environmental Sciences, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu, IN
1 Department of Environmental Sciences, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu, IN
Source
Nature Environment and Pollution Technology, Vol 16, No 3 (2017), Pagination: 905-909Abstract
Among the different organic sources which can be used as manure, poultry litter is important as it is rich in major plant nutrients. A laboratory incubation experiment was conducted to study the rate of carbon and nitrogen mineralization in soil due to the application of various doses of solid and liquid fermented poultry manure application. The study revealed that the highest carbon dioxide evolution (68.0 mg kg-1) and available nitrogen content (63 mg kg-1) were present in the soil that received solid fermented poultry manure @ 680 kg ha-1. The mineralization of carbon (72.8 mg kg-1) and the nitrogen content (64.5 mg kg-1) were maximum at 90th day of incubation. The poultry manure not only added valuable plant nutrients to the soil, but also enhanced the mineralization of nutrients. The present laboratory study confirmed the increased rate of nutrient mineralization in the soil due to the application of various doses of solid and liquid fermented poultry manure.Keywords
Organic Manure, Poultry Manure, Nutrient Mineralization.Full Text
- Response of Ambient BC Concentration Across the Indian Region to the Nation-Wide Lockdown: Results from the ARFINET Measurements of ISRO-GBP
Abstract Views :310 |
PDF Views:91
Authors
Mukunda M. Gogoi
1,
S. Suresh Babu
1,
B. S. Arun
1,
K. Krishna Moorthy
2,
A. Ajay
3,
P. Ajay
4,
Arun Suryavanshi
5,
Arup Borgohain
6,
Anirban Guha
7,
Atiba Shaikh
8,
Binita Pathak
4,
Biswadip Gharai
9,
Boopathy Ramasamy
10,
G. Balakrishnaiah
11,
Harilal B. Menon
8,
Jagdish Chandra Kuniyal
12,
Jayabala Krishnan
13,
K. Rama Gopal
11,
M. Maheswari
13,
Manish Naja
14,
Parminder Kaur
7,
Pradip K. Bhuyan
4,
Pratima Gupta
15,
Prayagraj Singh
16,
Priyanka Srivastava
14,
R. S. Singh
17,
Ranjit Kumar
15,
Shantanu Rastogi
16,
Shyam Sundar Kundu
6,
Sobhan Kumar Kompalli
1,
Subhasmita Panda
10,
Tandule Chakradhar Rao
11,
Trupti Das
10,
Yogesh Kant
18
Affiliations
1 Space Physics Laboratory, Vikram Sarabhai Space Centre, Thiruvananthapuram 695 022, IN
2 Centre for Atmospheric and Oceanic Sciences, Indian Institute of Science, Bengaluru 560 012, IN
3 Divecha Centre for Climate Change, Indian Institute of Science, Bengaluru 560 012, IN
4 Centre for Atmospheric Studies, Dibrugarh University, Dibrugarh 786 004, IN
5 Regional Remote Sensing Centre, Indian Space Research Organisation, Nagpur 440 033, IN
6 North Eastern – Space Application Centres, Shillong 793 103, IN
7 Department of Physics, Tripura University, Suryamaninagar, Agartala 799 022, IN
8 Department of Marine Sciences, Goa University, Goa 403 206, IN
9 National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 037, IN
10 Indian Institute of Mineral and Materials Technology, Bhubaneswar 751 013, IN
11 Sri Krishna Devaraya University, Anantapur 515 003, IN
12 G. B. Pant Institute of Himalayan Environment and Development, Kullu 175 126, IN
13 Tamil Nadu Agricultural University, Coimbatore 641 003, IN
14 Aryabhatta Research Institute of Observational Sciences, Nainital 263 002, IN
15 Department of Chemistry, Dayalbagh Educational Institute, Agra 282 005, IN
16 Department of Physics, D.D.U. Gorakhpur University, Gorakhpur 273 009, IN
17 Department of Chemical Engineering, IIT-BHU, Varanasi 221 005, IN
18 Indian Institute of Remote Sensing, Indian Space Research Organisation, Dehradun 248 001, IN
1 Space Physics Laboratory, Vikram Sarabhai Space Centre, Thiruvananthapuram 695 022, IN
2 Centre for Atmospheric and Oceanic Sciences, Indian Institute of Science, Bengaluru 560 012, IN
3 Divecha Centre for Climate Change, Indian Institute of Science, Bengaluru 560 012, IN
4 Centre for Atmospheric Studies, Dibrugarh University, Dibrugarh 786 004, IN
5 Regional Remote Sensing Centre, Indian Space Research Organisation, Nagpur 440 033, IN
6 North Eastern – Space Application Centres, Shillong 793 103, IN
7 Department of Physics, Tripura University, Suryamaninagar, Agartala 799 022, IN
8 Department of Marine Sciences, Goa University, Goa 403 206, IN
9 National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 037, IN
10 Indian Institute of Mineral and Materials Technology, Bhubaneswar 751 013, IN
11 Sri Krishna Devaraya University, Anantapur 515 003, IN
12 G. B. Pant Institute of Himalayan Environment and Development, Kullu 175 126, IN
13 Tamil Nadu Agricultural University, Coimbatore 641 003, IN
14 Aryabhatta Research Institute of Observational Sciences, Nainital 263 002, IN
15 Department of Chemistry, Dayalbagh Educational Institute, Agra 282 005, IN
16 Department of Physics, D.D.U. Gorakhpur University, Gorakhpur 273 009, IN
17 Department of Chemical Engineering, IIT-BHU, Varanasi 221 005, IN
18 Indian Institute of Remote Sensing, Indian Space Research Organisation, Dehradun 248 001, IN
Source
Current Science, Vol 120, No 2 (2021), Pagination: 341-351Abstract
In this study, we assess the response of ambient aero-sol black carbon (BC) mass concentrations and spec-tral absorption properties across Indian mainland during the nation-wide lockdown (LD) in connection with the Coronavirus Disease 19 (COVID-19) pan-demic. The LD had brought near to total cut-off of emissions from industrial, traffic (road, railways, ma-rine and air) and energy sectors, though the domestic emissions remained fairly unaltered. This provided a unique opportunity to delineate the impact of fossil fuel combustion sources on atmospheric BC characte-ristics. In this context, the primary data of BC meas-ured at the national network of aerosol observatories (ARFINET) under ISRO-GBP are examined to assess the response to the seizure of emissions over distinct geographic parts of the country. Results indicate that average BC concentrations over the Indian mainland are curbed down significantly (10–40%) from pre-lockdown observations during the first and most in-tense phase of lockdown. This decline is significant with respect to the long-term (2015–2019) averaged (climatological mean) values. The drop in BC is most pronounced over the Indo-Gangetic Plain (>60%) and north-eastern India (>30%) during the second phase of lockdown, while significant reduction is seen during LD1 (16–60%) over central and peninsular Indian as well as Himalayan and sub-Himalayan regions. De-spite such a large reduction, the absolute magnitude of BC remained higher over the IGP and north-eastern sites compared to other parts of India. Notably, the spectral absorption index of aerosols changed very little over most of the locations, indicating the still persisting contribution of fossil-fuel emissions over most of the locations.Keywords
ARFINET, Black Carbon, COVID-19.Full Text
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- Weingartner, E., Saathof, H., Schnaiter, M., Streit, N., Bitnar, B. and Baltensperger, U., Absorption of light by soot particles: determination of the absorption coefficient by means of Ae-thalometers. J. Aerosol Sci., 2003, 34, 1445–1463; doi:10.1016/S0021-8502(03)00359-8.
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- Moorthy, K. K., Babu, S. S., Sunilkumar, S. V., Gupta, P. K. and Gera, B. S., Altitude profiles of aerosol BC, derived from aircraft measurements over an inland urban location in India. Geophys. Res. Lett., 2004; doi:10.1029/2004GL021336. L1B2103.
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- Arun, B. S., Aswini, A. R., Gogoi, M. M., Hegde, P., Kompalli, S. K., Sharma, P. and Babu, S. S., Physico-chemical and optical properties of aerosols at a background site (~4 km a.s.l.) in the western Himalayas. Atmos. Environ., 2019, doi:10.1016/j. atmosenv.2019.1170.
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- Jain, S. and Sharma, T., Social and travel lockdown impact con-sidering coronavirus disease (COVID-19) on air quality in mega-cities of India: present benefits, future challenges and way for-ward. Aerosol Air Qual. Res., 2020; doi:10.4209/aaqr.2020. 04.0171.
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- Calcium Carbonate Activated Biomass-Derived Carbon: Insights on Characterization and Adsorption
Abstract Views :101 |
PDF Views:64
Authors
R. Sangeetha Piriya
1,
Rajamani M. Jayabalakrishnan
1,
M. Maheswari
1,
Kovilpillai Boomiraj
1,
Sadish Oumabady
1
Affiliations
1 Department of Environmental Sciences, Tamil Nadu Agricultural University, Coimbatore 641 003, India., IN
1 Department of Environmental Sciences, Tamil Nadu Agricultural University, Coimbatore 641 003, India., IN
Source
Current Science, Vol 124, No 10 (2023), Pagination: 1167-1174Abstract
Activated carbon made from coconut (Cocos nucifera) shells has the potential to be a valuable source for removing pollutants from wastewater. Recently, the use of calcium carbonate to activate carbon materials derived from agricultural waste has been gaining attention as an effective method for adsorption in wastewater treatment. In the present study, we have analysed the structural and functional properties of activated coconut shell biochar. Results show that calcium carbonate-activated carbon had a maximum adsorption capacity of 40.35 mg g–1 after 3 h of equilibrium when tested with 20 mg l–1 of malachite dye. The R2 value for this activated carbon was 0.822, and the best-fit model was determined to be pseudo-second-order kinetics, with intraparticle diffusion being the final rate-limiting stepKeywords
Agricultural Waste, Calcium Carbonate Acti-Vation, Coconut Shell, Wastewater Treatment.Full Text
References
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