scholarly journals Effects of Strategy Control Measures on Strategy Implementation at the Lake Victoria North Water Services Board, Homabay County, Kenya

2020 ◽  
Vol 9 (7) ◽  
Author(s):  
Thomas Okoth Otieno ◽  
Victor Aliata
Keyword(s):  
Lake Victoria ◽  
Strategy Implementation ◽  
Control Measures ◽  
Water Services ◽  
North Water ◽  
Strategy Control

Sustainable Water Services: Theory, Control Measures, Practical Experiences

2015 ◽  
Vol 4 (0) ◽  
pp. 9781780403014-9781780403014
Author(s):  
R. Ashley ◽  
D. Blackwood ◽  
D. Butler ◽  
P. Jowitt
Keyword(s):  
Control Measures ◽  
Water Services ◽  
Practical Experiences

Research on Deformation Influence of Shield Undercrossing the Existing Metro Double Shield Tunnel

2014 ◽  
Vol 1065-1069 ◽  
pp. 378-382 ◽  
Author(s):  
Hua Peng ◽  
Zhi Yong Dong ◽  
Yun Liang Liu
Keyword(s):  
Numerical Simulation ◽  
Model Calculation ◽  
Water Transfer ◽  
Control Measures ◽  
Shield Tunnel ◽  
Protective Measures ◽  
Deformation Law ◽  
North Water ◽  
Simulation Results ◽  
Metro Project

In the big cities, the shield undercrossing metro project has become critical to the safety of the metro, this paper takes the South-North Water Transfer Project shield under traverse Beijing certain subway project for construction background. It makes technical schemes comparison, analyses the deformation law of the existing subway structure and propoes protective measures to prevent the existing subway structure. The analysis showed the following conclusions: in shield undercrossing the metro project, in order to reduce disturbance on surrounding soils and the existing metro structure, we should take the necessary control measures such as grouting and determine the optimum shield parameters; the overall trend of the monitoring results accords well with numerical simulation results; The reason why the actual values and model calculation values has certain deviation is that it is difficult to consider shield parameters such as the pressure of shield thrust, pressures of grouting and so on in numerical simulation.

Optimization Study on Drainage System for Canal of Middle Route Project of SNWT in Expansive Soil Area with High Groundwater Level

2014 ◽  
Vol 580-583 ◽  
pp. 2023-2028
Author(s):  
Hao dong Cui ◽  
Jia Fa zhang ◽  
Guo Sheng zhu ◽  
De Xu Wu ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Water Level ◽  
Groundwater Level ◽  
Water Pressure ◽  
Drainage System ◽  
Expansive Soil ◽  
Control Measures ◽  
Seepage Field ◽  
Finite Element Technology ◽  
North Water ◽  
Soil Area

The seepage field regulation is important for the stability canal liner plate and slope for along the Middle Route of the South-to-North Water Transfer Project, especially for stretches excavated in expensive soil area with groundwater level. In order to analyzing the rationality and efficiency of seepage regulation measures comprehensively, a typical section was modeled, and the seepage field was simulated with the 3D finite element technology. The distribution of seepage field was analyzed and the seepage control measures were compared. The results show that water pressure on the underside of canal pavement would be reduced significantly by the measures, such as the measure of drainage cushion with drainage holes which open just when ground water level is higher than the canal water level, the measure with drainage cushion replaced by the drainage board. The differences among the two kinds of measure were compared. Their application conditions were discussed and proposed.

scholarly journals Evaluating community’s knowledge on integrated malaria, schistosomiasis and soil transmitted helminth (STH) infections in a Lake Victoria island, Kenya: A mixed method approach

2019 ◽  
Vol 2 ◽  
pp. 8
Author(s):  
Jesse Gitaka ◽  
Peter Mwaura ◽  
Kevin Oware ◽  
James Kongere ◽  
Job Wasonga ◽  
...  
Keyword(s):  
Mixed Method ◽  
Lake Victoria ◽  
Control Measures ◽  
Community Perception ◽  
Preventive Chemotherapy ◽  
Mixed Method Approach ◽  
High Knowledge ◽  
Public Health Challenge ◽  
Victoria Island ◽  
Method Approach

Background: The burden of malaria, schistosomiasis and soil transmitted helminthes (STH) in the islands of Lake Victoria, Kenya, poses a considerable public health challenge. Although many studies have been conducted on the co-infection arising from these parasites, few have evaluated communities’ knowledge of the same. Increasing the level of knowledge about a disease or preventive chemotherapy is important, but efforts need to be focused on community perception and understanding of the problem so as to encourage engagement with the proposed control measures. This study aimed at understanding a community’s knowledge of malaria, schistosomiasis and STH in Lake Victoria island where an integrated preventive chemotherapy intervention was implemented. Methods: This study was conducted in Ngodhe Island in Lake Victoria in Homa Bay County, western Kenya region between April and May 2016. The study adopted a mixed method approach where both qualitative and quantitative data collection was performed concurrently.  Results: A total of 239 people participated in this study. All the respondents reported that they had heard about malaria, 89.1% had heard about schistosomiasis while 87.4% had heard about STH. The majority of the respondents (93.3%) drew their drinking water directly from the lake and 80.3% reported bathing in the lake. Out of all the respondents, 96.2% knew about the ongoing preventive chemotherapy. Most respondents (94.1%) said they would participate in a preventive chemotherapy again, while 0.4% was not sure. The majority of the respondents (86.6%) reported that integrated strategy is the most effective approach to control the three infections in the Island. Conclusion: The findings show a very high knowledge about these diseases. Although this study found majority of the respondents are aware of the co-infection of malaria, schistosomiasis and STH, their behaviors such as bathing in the lake exacerbates the problem.

Study on Concrete's Temperature Control Measures for Inverted-Siphons during Construction Period

2012 ◽  
Vol 443-444 ◽  
pp. 792-795
Author(s):  
Xiao Mei Dong ◽  
Yi He ◽  
Jing Chao Sun
Keyword(s):  
Temperature Control ◽  
Concrete Surface ◽  
Control Measures ◽  
Good Effect ◽  
Construction Period ◽  
Inverted Siphon ◽  
Time Space ◽  
North Water ◽  
Water Pipe Cooling

In view of the problem of concrete cracks during construction, the good effect of cracks prevention can be achieved if the timely and reasonable scheme of temperature control is selected. Under the 3-D FEM including water-pipe cooling is adopted to simulate the stresses field of Inverted siphon during construction. Through analyzing the time-space variation law, it is fund that cracks easily appear. In the part of the middle line of the South-North Water Transfer Project£¬the quality of concrete surface of III section in Jiaozuo has been improved obviously through the method of external insulation board.

Study on Concrete's Temperature Control Measures for Inverted-Siphons in Wenxian-Boai I Section

2012 ◽  
Vol 443-444 ◽  
pp. 788-791
Author(s):  
Yi He ◽  
Xiao Mei Dong ◽  
Chen Hui Zheng
Keyword(s):  
Concrete Surface ◽  
Control Measures ◽  
Mass Concrete ◽  
External Temperature ◽  
External Insulation ◽  
Inverted Siphon ◽  
Time Space ◽  
North Water ◽  
The Difference

In view of the problem of mass concrete cracks during construction, the corresponding measures and methods are put forward. Generally speaking, the difference between the internal and external temperature and the basic difference of temperature are considered as the main factors influencing the phenomena. Under the FEM is adopted to simulate the stresses field of Inverted siphon during construction. Through analyzing the time-space variation law, it is fund that cracks easily appear. In the part of the middle line of the South-North Water Transfer Project£¬the quality of concrete surface of ¢ñsection in Jiaozuo has been improved obviously through the method of external insulation board, so it deserves to bepopularized.

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