Dhemāji, India
Dhemāji, India

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Neog D.K.,Dhemaji College | Devi R.,Dhemaji College
Microwave and Optical Technology Letters | Year: 2010

A generalized method is presented to determine the resonant frequency ofslot-loaded rectangular microstrip patch antenna by equating its area to an equivalent area ofa rectangular microstrip patch antenna. The computed results are in good agreement with the reported simulated and measured results. © 2009 Wiley Periodicals, Inc.


Neog D.Kr.,Dhemaji College | Devi R.,Dhemaji College
2010 International Conference on Computer Information Systems and Industrial Management Applications, CISIM 2010 | Year: 2010

A new method for calculation of band width with optimized length and width of rectangular microstrip antenna using Clonal selection algorithm (CSA) is presented in this paper. The result obtained using CSA are compared with the experimental findings and with the simulation results obtained using method of moment based IE3D software from Zealand Inc., USA. The CSA based calculated results are in good agreement. ©2010 IEEE.


Devi R.,Dhemaji College | Neog D.K.,Dhemaji College
Proceedings - 2014 6th International Conference on Computational Intelligence and Communication Networks, CICN 2014 | Year: 2014

In this paper, a clonal selection algorithm based method is presented for the optimization of slot parameters embedded on ultra-wideband antennas to notch-out frequency bands to prevent interference between ultra wideband (UWB) systems and existing wireless systems. The method is applicable for both half-wavelength and quarter-wavelength slot-resonators. The effects of substrate properties are included in the proposed work. The method is validated by comparing the computed values with experimental values reported earlier. It shows very good agreement. © 2014 IEEE.


Bora H.K.,Dhemaji College | Neog D.K.,Dhemaji College
2013 IEEE Applied Electromagnetics Conference, AEMC 2013 | Year: 2013

A printed quad band microstrip antenna is presented in this paper. The proposed microstrip-fed antenna consists of a circular ring connected to a slotted square with two arc shaped arms operates in the 1990 MHz Personal Communication System(PCS) band, 3.5/5.5 GHz worldwide interoperability for microwave access (WiMAX) bands, 6-7 GHz Satellite communication bands. The antenna has dimensions of 38×25×1.59 mm3. The proposed antenna is simulated with HFSS software and achieved good impedance bandwidth, directional radiation pattern and improved peak gain in the all four operating frequency bands. © 2013 IEEE.


Devi R.,Dhemaji College | Neog D.K.,Dhemaji College
2011 IEEE Applied Electromagnetics Conference, AEMC 2011 | Year: 2011

A wideband antenna for dual resonant frequency operation is presented. It is a basic rectangular shape antenna with two triangular sharp notches and air as a dielectric medium. The impedance bandwidth of the antenna is 15.97%. The calculated 3dB pattern bandwidth is 15.96% and maximum total field gain is 9.14 dB. The experimental results are in good agreement with the calculated results. © 2011 IEEE.


Sharma U.K.,Dhemaji College | Pegu S.,Dhemaji College
Journal of Ethnobiology and Ethnomedicine | Year: 2011

Assam is very rich in plant biodiversity as well as in ethnic diversity and has a great traditional knowledge base in plant resources. It is inhabited by the largest number of tribes and they lead an intricate life totally dependent on forest plants. The Mising is the major section and second largest tribal community of Assam and have a rich tradition of religion and culture. Their religious practices and beliefs are based on supernaturalism. A study of the plants related to magico religious beliefs in Dobur Uie of Mising is carried out. The results revealed the use of 30 plants belonging to 23 families. All plant species are used both in religious purpose as well as in the treatment of different ailments. Details of the uses of plants and conservational practices employed in Dobur Uie are provided. Our findings on the use of plants in Dobur Uie ritual reflect that some plants are facing problems for survival and they need urgent conservation before their elimination. Because this elimination may threat the rich tradition of Mising culture. Most of the plants that are domesticated for different rituals are almost same in all Mising populated areas. © 2011 Sharma and Pegu; licensee BioMed Central Ltd.


Bora K.,Dhemaji college | Bezboruah T.,Gauhati University
Lecture Notes in Engineering and Computer Science | Year: 2013

We propose for modeling and software implementation of proportional- integral-derivative controlled higher order phase-locked loop with low settling time acquisitions applicable to frequency modulated transceiver. The implementation has been done by inserting a proportionalintegral- derivative control block into the phase-locked loop during acquisition, where originally the output frequency/phase is controlled by a low pass loop filter. Simulation results show that the method can reduce the settling time up to 94%, 49% and 18% for 2nd, 3rd and 4th order phaselocked loop up to a frequency range of 0.9GHz.


PubMed | Dhemaji College
Type: Journal Article | Journal: Journal of ethnopharmacology | Year: 2012

The Hajong people use many medicinal plants in their different rituals. The information generated from the present study regarding the medico-religious plants used by the Hajong tribes need a thorough phytochemical investigation. This could help in creating awareness regarding the need for conservation of such plants and also in the promotion of ethno-medico-botany knowledge within the region besides contributing to the preservation and enrich- ment of the gene bank of such economically important species before they are lost forever. Medico-religious plants so found out in this study should be screened for their efficacy by which new drugs or products could be brought out. There is also need to document this information and compare with that of other tribes in the state and region.The diseases found during the research work among the Hajong community were grouped in 11 categories. The category of diseases includes plants used for both human and animal diseases. The informants having good knowledge on medico-religious plants were chosen for the interview. Kabiraj or Vaidyas were also included among the informants though they were not available in all villages. The informants were asked about the ritual and religious importance and the medicinal properties of the plants used in different cultural practices.Some 36 plant species including herbs, shrubs and trees are used for curing 51 different diseases with 63 formulations which are recorded during the study. Most of the medicinal plants were collected from their own homestead and rest from the forest. Hajongs make sustainable use of available natural resources that include both medicinal and religious plants. They lead a much disciplined life. They are very much religious and knowledgeable. The survey revealed that not only the Kabiraj but also the elder community member have good knowledge of the medicinal value of some plant usually those species used to treat common diseases like cough, cold, fever, viral fever, headache, stomachache, joint pain, diarrhea, dysentery, minor wounds and cuts etc. Thus 36 plants are found to be used by Hajong in different medico-religious practices. These are regarded as holy plants. These plants are strictly protected by the community. Traditional conservation and management on cultural grounds, therefore, represents a historic contribution to the present day rich biodiversity in the region.The whole life system and socio-economic as well as religious and cultural activities of Hajongs were totally dependent upon forests. It reflected their high possession of knowledge on medico religious plants which allowed them to apply their indigenous knowledge regarding various aspects of exploitation of such resources. Different types of important species have been disappeared from the study area, which ultimately creates social, economical and religious problem in Hajong community. The information generated from the present study regarding the medico-religious plants used by the Hajong tribes need a thorough phytochemical investigation. This could help in creating awareness regarding the need for conservation of such plants and also in the promotion of ethno-medico-botany knowledge within the region besides contributing to the preservation and enrichment of the gene bank of such economically important species before they are lost forever. Traditional culture in different Hajong populated areas is very fast declining with lot of traditional knowledge under the influence of dominant culture. Cultural diversity conservation is needed urgently.

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