Scientific Research and Reviews

Innovative testing technique of rock stress wave propagation

Research Article of Scientific Research and Reviews Innovative testing technique of rock stress wave propagation Qing-yu Song1*,  Rui Zhang2 1School of Earth Science and Engineering, Hebei University of Engineering, Handan, Hebei 056038, China. 2School of Architectural and Surveying Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, China. Inadequacy of rock mechanics chamber test devices and test systems that cannot accurately simulate gradient static stresses on specimens, this paper presented an innovative testing technique, which relates to the stress wave propagation of rock subjected gradient static stress. The method involves modification of a split Hopkinson pressure bar, such that the test specimen is subjected to gradient static stress and axial impact loading. The device has the features of simple loading and multiple static stress gradients, which verifies the feasibility of stress wave propagation test of red sandstone specimens under linear gradient static stress and conducts stress wave propagation test of red sandstone specimens under linear gradient static stress. Tests on red sandstone specimens with different static stress gradients show that the stress wave propagation of the specimens under gradient static stress is different with their corresponding homogeneous static stress state. The attenuation coefficients of stress waves are different under different conditions, and loading gradient static stress can accelerate the attenuation process. The results of this study will be useful for the analysis of stress wave propagation in deep engineering blasting and the stability analysis of adjacent structures. Keywords: Stress wave propagation; Rock; SHPB system; Gradient static stress ...

Determining the location of River Dam Group based on set cover Model: A case study of Zambezi River Basin

Research Article of Scientific Research and Reviews Determining the location of River Dam Group based on set cover Model: A case study of Zambezi River Basin Tianlong Wang1*, Xiaorui Tao2, Dongkun Wu1, Haotian Feng2 1College of Civil Engineering & Architecture, China Three Gorges University, Yichang, 443002, China. 2College of Economics & Management, China Three Gorges University, Yichang, 443002, China Taking the Zambezi River Basin as a typical case, this paper studied the location problem of dam group. Based on the topographical and elevation maps of the Zambezi River Basin, we evaluated each region by five indicators (Water head difference elevation, Geological environment, Climatic environment, Population distribution and Biodiversity), and selected the 22 candidate dam sites. Meanwhile, the relative feasibility index of dam construction is calculated by the entropy weight-grey correlation analysis. On this basis, combined with the water management capacity of the dam, a set coverage model of dam selection is established, and the neighborhood adaptive particle swarm optimization algorithm (NAPSO) is used to solve the 12 most suitable dam sites. Comparing with the water management capacity of the original Kariba Dam, the new dams’ water storage and flood control capacity, hydroelectric power generation capacity, domestic water supply capacity and other water supply capacity have been increased by 235.92%, 250.62%, 189.66% and 223.61% respectively. Our study can provide some guidance for the site selection project of river dam group. Keywords: Dam site selection; Set coverage model; NAPSO; Entropy weight-grey correlation analysis ...

Improved soil plug height calculation formula

Research Article of Scientific Research and Reviews Improved soil plug height calculation formula Sashuang Gao Shanghai Maritime University, Shanghai 201306, China. This paper analyzes the soil plugging effect of the open pipe pile during the pile sinking process. The soil in the pipe pile is regarded as a continuous and uninterrupted multiple units, and the force analysis is carried out in the vertical direction, and the vertical balance equation of the soil in the pile is obtained. By establishing an equation, the expression of the plug height of the pipe pile during the pile sinking process is obtained. Comparing the theoretical calculation results with the actual project, it is concluded that the theoretical calculation results can reflect the overall change in the height of the soil plug. Therefore, the pile plug height obtained by calculation has certain guiding significance for the project. Keywords: Open pipe pile; Soil plug height; Theoretical calculation; Balance equation ...

The Role Of Acacia Decurrens Tree On Farmers Livelihod In The Banja Woreda

Research Article of Scientific Research and Reviews The Role Of Acacia Decurrens Tree On Farmers Livelihood In The Banja Woreda Bogale Aligaiz Agalu Department of History, Injibara The aim of the study assesses the role of Acacia Decurrens tree on Farmers Livelihood in the Banja Woreda. To this purpose, the study adopted descriptive survey design. The study focused on the three kebeles such as Zek na Gumerta, Bidana Jegola and kesa Chewsa in the Banaja district of the Awi Zone, Amhara regional state. This design would employ multiple sources of data such as distribution of questionnaires and conducting interviews with the concerned parties. The target population for this study was 25 rural kebeles, from those kebeles I selected three kebeles according to the homogeneity characteristics in plantation of Acacia decurrens tree. To determine the required sample size, the selected kebeles has 678 households’ farmers, 105 sample farmers are represented. Then, 35 sample farmers from each kebeles are selected by random sampling method. One-sample t-test analysis was made using Statistical Package for Social Sciences (SPSS) software version 20 to show the result of study. The result discussed by the use of the descriptive and econometric analysis. Keywords: Acacia Decurrens, Farmers Livelihood, Households ...

Dr. Prakash Goudanavar
Professor and Head, Department of Pharmaceutics, Sri Adichunchanagiri College of Pharmacy

Dr. Alfred DACI
Polytechnic University of Tirana, Mathematical and Physical Engineering Faculty

Dr. Mehmet Fatih Karaaslan
Statistics Department, Yildiz Technical University, Turkey

Dr Sherif A. Younis
Analysis and Evaluation Department, Egyptian Petroleum Research Institute (EPRI)

Dr. Saroj Kumar Ghosh
Department of Zoology, Bejoy Narayan Mahavidyalaya

Dr. Rahul Singh
DIVISION OF PATHOLOGY , ICAR- Indian Veterinary Research Institute

Dr. Srikanth Boinapally
Department of Radiology, School of Medicine, JHU

Assist. Prof. Ihsan Habib Dakhil
Assistant Professor, Chemical Engineering Department, Engineering College, Al Muthanna University

Senior Research & Development Engineer (New Materials Development), Honeywell UOP, India Technology Centre

Dr Prem Kumar Seelam
Environmental and Chemical Engineering Research Group, Faculty of Technology, P.O. Box 4300, 90014 University of Oulu, Finland

Dr. Eng. Hamid Ali Abed AL-Asadi
Department of Computer Science, Faculty of Education for Pure Science, Basra University

Dr. M. Kenan Dosoglu
Duzce University, Technology Faculty, Electrical-Electronics Engineering, Duzce, Turkey

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1. Avinaba Mukherjee, Sourav Sikdar, Anisur Rahman Khuda-Bukhsh. Evaluation of ameliorative potential of isolated flavonol fractions from Thuja occidentalis in lung cancer cells and in Benzo(a) pyrene induced lung toxicity in mice. International Journal of Traditional and Complementary Medicine, 2016; 1(1): 0001-0013. 
2. Vikas Gupta, Parveen Bansal, Junaid Niazi, Kamlesh Kohli, Pankaj Ghaiye. Anti-anxiety Activity of Citrus paradisi var. duncan Extracts in Swiss Albino Mice-A Preclinical Study. Journal of Herbal Medicine Research, 2016; 1(1): 0001-0006.

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Scientific Research and Reviews