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Coastal Livelihood Vulnerability to Climate Change: A Case Study of Char Montaz in Patuakhali District of Bangladesh
Saydur Rahman,
Md. Touhiduzzaman,
Irteja Hasan
Issue:
Volume 3, Issue 4, August 2017
Pages:
58-64
Received:
14 May 2017
Accepted:
6 June 2017
Published:
14 July 2017
Abstract: This study was conducted at coastal Char Montaz in Rangabali Upazila at Patuakhali district of Bangladesh. Char Montaz is vulnerable to different types of destructive disasters due to its geographic location. Disasters such as floods, river bank erosion, cyclone, tornado, hail storm, water logging, salinity intrusion etc. are gradually intensifying by climate change and composing risks for the coastal people in Char Montaz. The study is concerned with climate change related risks and hazards that affects the inhabitant’s livelihood of the study area. The study findings demonstrated that the climate change has affected the 70% people’s agricultural livelihood in many ways. It has also created a state of unemployment among the people of coastal communities. As a result, the affected people are losing their means of livelihoods and forced to take several alternative means of livelihoods to cope with the adverse impact of climate change related disasters. The study identifies the livelihood adaptation strategies adapted by the affected communities in Char Montaz area. The present paper exhibits that the coastal community people try to solve their problems through adopting and exploring alternative employments.
Abstract: This study was conducted at coastal Char Montaz in Rangabali Upazila at Patuakhali district of Bangladesh. Char Montaz is vulnerable to different types of destructive disasters due to its geographic location. Disasters such as floods, river bank erosion, cyclone, tornado, hail storm, water logging, salinity intrusion etc. are gradually intensifying...
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Asymmetry Interactions of Electrons and Positrons in Strong Pulsed Laser Fields
Stanislav Starodub,
Sergei Roshchupkin,
Viktor Dubov
Issue:
Volume 3, Issue 4, August 2017
Pages:
65-72
Received:
15 May 2017
Accepted:
15 June 2017
Published:
21 July 2017
Abstract: The interaction of two electrons and two positrons in the field of two strong pulsed laser waves outside the framework of the dipole approximation (with an accuracy of relativistic corrections v/c) has been studied theoretically. The possibility of significant asymmetry in the interactions of particles and antiparticles in the external laser fields is shown. This asymmetry of interactions essentially depends on the magnitude and sign of the phase shifts of the waves relative to each other, and also on the intensities of the waves. The ranges of phase shifts and field intensities in which the interaction of electrons and positrons have qualitatively different character from anomalous repulsion to attraction are determined.
Abstract: The interaction of two electrons and two positrons in the field of two strong pulsed laser waves outside the framework of the dipole approximation (with an accuracy of relativistic corrections v/c) has been studied theoretically. The possibility of significant asymmetry in the interactions of particles and antiparticles in the external laser fields...
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Combining Wind and Solar Energy to Meet Demands in Somali Region of Ethiopia (A Case of Dembel District)
Issue:
Volume 3, Issue 4, August 2017
Pages:
73-83
Received:
13 May 2017
Accepted:
31 May 2017
Published:
25 July 2017
Abstract: Shortage of electric power is a serious problem in Ethiopia. The population living in urban and semi urban areas connected to the national grid makes only less than 20% of the total. The remaining 80% of the population in scattered rural villages and have very remote chance to get electricity from the grid. The only realistic approach to electrify the rural areas seems therefore to be the off grid system. Study was conducted to assess suitability of stand-alone wind-solar PV hybrid power for Debmel village which is detached off the main grid line. The data required for this work (wind speed and sunshine hours) were obtained from the National Meteorological Agency (NMA) and analyzed using HOMER & MATLAB software’s. The actual data used was from Dire-Dawa station, which is the closest meteorological station to the village. Both wind power and solar PV power potentials were evaluated from wind speed and sunshine hours of the station, respectively. The electrical load for a model community is considered and a community school together with a health post is included. For the feasibility study of the hybrid system HOMOR is used. By running the software the optimization results have been generated and arranged according to their least net present cost. Furthermore, a sensitivity analysis also carried out for the major sensitivity components of the hybrid system (like PV price, hub height and diesel price). The study revealed that the area has abundant solar energy potential (6.12 KWh/m2/day) but its wind potential is not as promising. This is partly attributed to the level at which wind speed measurement was taken, 2 m, instead of the recommended 10 m height. The result of the software shows that the most cost effective system, i.e. the system with the lowest net present cost, is the PV-generator-battery-converter set-up. For this set-up, the total net present cost (NPC) is $ 155,875, the cost of energy (COE) is 0.415$/kWh, contribution from renewable resources is 91%.
Abstract: Shortage of electric power is a serious problem in Ethiopia. The population living in urban and semi urban areas connected to the national grid makes only less than 20% of the total. The remaining 80% of the population in scattered rural villages and have very remote chance to get electricity from the grid. The only realistic approach to electrify ...
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Analysis of Wave Power Plant on the Northeast Coast of the Absheron Peninsula
Issue:
Volume 3, Issue 4, August 2017
Pages:
84-89
Received:
11 May 2017
Accepted:
29 June 2017
Published:
9 August 2017
Abstract: The article deals with the study of Wells turbine in accordance with the wave energy potential of the northeastern coast of the Absheron Peninsula. Show a methodical approach to determine the main technical parameters of the turbine Wells. In accordance with the procedure were the main parameters of the Wells turbine, including efficiency and productivity.
Abstract: The article deals with the study of Wells turbine in accordance with the wave energy potential of the northeastern coast of the Absheron Peninsula. Show a methodical approach to determine the main technical parameters of the turbine Wells. In accordance with the procedure were the main parameters of the Wells turbine, including efficiency and produ...
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