Characterization of Radio-Waste from TRIGA II Research Reactor and Assessment of Corresponding Radiation Dose in Bangladesh
Rahman Moshiur,
Khairul Islam,
Humaira Takia,
Khokon Hossen,
Moinul Islam,
Satyajit Ghose
Issue:
Volume 8, Issue 4, August 2023
Pages:
66-71
Received:
28 May 2023
Accepted:
25 July 2023
Published:
4 August 2023
Abstract: HPGe Detector, MCA, NAA, Radionuclide, Effective Dose, Ion Exchange Resin, Gamma Spectrometry
Challenges and Opportunities of Irrigated Wheat (Triticum Estievum L.) Production in Jimma Zone South West Ethiopia: A Review
Issue:
Volume 8, Issue 4, August 2023
Pages:
72-79
Received:
6 July 2023
Accepted:
26 July 2023
Published:
4 August 2023
Abstract: Wheat Production Initiative was designed to make the country self-sufficient in wheat production. The highlands of the central, south-eastern, and North West parts of the country are the main wheat-growing areas, however, there was no/little experience of wheat production in the lowland. Poor irrigation management that results in either excessive or inadequate water application can significantly reduce the potential for profitability. Increasing irrigation efficiency by applying improved water management strategies could be the prime objective for sustainable irrigated agriculture. In Jimma zone, even though there are a plenty of available natural resources such as land, water and suitable agro-ecology, there were some water deficit because of their location (physical nature) in the gorges and not suitable for surface irrigation and demand sophisticated irrigation technology. In this study different literatures were seen in addition to site observation at different irrigated wheat cluster farming to identify the different challenges and opportunities of irrigated wheat production. The major challenges for the production of irrigated wheat in Jimma zone were limited study on the suitability of the specific area of land for irrigated wheat farming, limited agricultural inputs, in adequate and low performance of small scale irrigation schemes, disease and pest problem, lack of market access, lack of financial support for irrigated wheat, and low quality of wheat products. Availability of water resources and irrigable land and high demand of wheat from the consumer side are among the opportunities that encourage farmers and other stakeholders to involve in the irrigated wheat production in Jimma Zone. The quality of irrigated wheat has to get an attention from the producer side.
Abstract: Wheat Production Initiative was designed to make the country self-sufficient in wheat production. The highlands of the central, south-eastern, and North West parts of the country are the main wheat-growing areas, however, there was no/little experience of wheat production in the lowland. Poor irrigation management that results in either excessive o...
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Research on Self-Propagating High-Temperature Synthesis of Ceramic Matrix Composites
Deshui Yu,
Yan Zhang,
Jianping Zhou,
Daqian Sun,
Hongmei Li
Issue:
Volume 8, Issue 4, August 2023
Pages:
80-82
Received:
17 July 2023
Accepted:
3 August 2023
Published:
22 August 2023
Abstract: Ceramics have excellent properties such as high hardness, corrosion resistance, and wear resistance, and have great potential for applications in harsh environmental conditions. However, the hard and brittle nature of ceramics makes processing and modification very difficult, which requires its composites to form ceramic matrix composites with other materials with complementary performance advantages. Currently, ceramic composites are synthesized using brazing, diffusion welding and self-propagating high-temperature synthesis techniques. The residual thermal stresses in ceramic composites prepared by brazing and diffusion welding have a large impact on the mechanical properties of the joints, and self-propagating high-temperature synthesis can alleviate this drawback. Self-propagating high-temperature synthesis (SHS) technology is a technology that utilizes the high chemical reaction heat energy generated between the reactants to join the desired materials in a very short period of time, which can effectively alleviate the large residual stresses due to the differences in mechanical properties, such as coefficients of thermal expansion, between the parent materials. It has the advantages of simple synthesis process, simple equipment, low energy consumption, no external energy supply when the reaction occurs, and environmental pollution. This paper reviews the research progress of SHS technology in recent years in ceramic/metal dissimilar materials joining, and analyzes the micro-morphology and mechanical properties of ceramic/metal interfaces, and puts forward the advantages and disadvantages of SHS technology.
Abstract: Ceramics have excellent properties such as high hardness, corrosion resistance, and wear resistance, and have great potential for applications in harsh environmental conditions. However, the hard and brittle nature of ceramics makes processing and modification very difficult, which requires its composites to form ceramic matrix composites with othe...
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