AUTOMATIC DOOR DAM PROTOTYPE BASED MICROCONTROLLER ATMEGA 16

Writing of this final project aims to build a prototype system that functions to control the process of opening and closing dam’s door automatically. Making these tools also to provide information on water levels in the dam. Automatic door dam prototype based microcontroller and atmega 16 is a tool that designed specifically to simulate automatically dam doors. This tool will work in accordance with the conditions of the water level. When the water level go up, the door dam will open automatically dam the door will close when the water level drops. The method used in constructing the dam door prototype based automated ATmega 16 using the method of design that consists of several stages: (1) identification of requirements, (2) Needs Analysis, (3) design of hardware and software, (4) tool-making, (5) Testing Tool and (6) Operational Equipment. The hardware consists of (1) The minimum ATmega16 as the main controller, (2) water level sensor (water level control) as the water level detector, (3) and infrared light sensor photodiode as a detector height of the dam doors, (4) DC motors as driver door dam and (4) LCD as the viewer height and the height of the dam door. Based on the results of testing that has been done, it can be concluded that a prototype tool based automatic door ATmega 16 dams can work well in accordance with the working principles designed. The performance of the tool is observed by looking at the condition of the sensor exposed to water. If the condition of the water in the dam go up to the maximum condition, then the motor will move "open" the door dam in stages according to water conditions in the tank. If the condition of the water in the dam down to the minimum, then the motor will move "close" the door dam in stages according to water conditions in the tank and the high information and high water doors will be displayed on the LCD. There is an average percentage error of 0.15%. Keywords: Door dam, water level sensor, LCD, ATmega1

Climate Change and Dam Owner Liability in Rhode Island

Increasing precipitation associated with climate change is affecting dam operation and hazards in Rhode Island. Flooding caused by increased precipitation or extreme weather events can cause dam failure or upstream or downstream flooding, resulting in loss of life and property. These losses can result in liability, which may vary based on the dam owner and its purpose. This study assists dam owners and the public in understanding the potential liabilities that may arise as a result of flooding from extreme weather events. Section one provides a background of dam hazards in Rhode Island in the context of climate change. Section two introduces the statutory, common law, and constitutional claims that may be brought against a dam owner after a flood. Section three applies these potential liabilities to illustrate how they may apply to different types of dams and dam owners. Section four evaluates Rhode Island law in the context of state laws from the northeast region, focusing on the application of statutory liability, strict liability and negligence standards, and liability for drawdown

Water catchment area and management method

Due to critical and obvious effect of the wastewater comes from the industry, agriculture and industrial activity nearby the dam has led to environmental issues in Sembrong dam, Kluang Johor which caused negative impacts to the biological, chemical and physical properties of water river environments. The dam itself contained a large number of algae which caused the blocking of sunlight, could not enter directly to the water surface and it threatening to the aquatic life. The dam also traps sediments, which are crucial for maintaining physical progressions and habitats of the dam. The chapter introduce “G.E.T” formula as management method to overcome the pollution problems. The implementation of “G.E.T” formula is basically to improve the urban environmental condition as key for urban policy and environmental management. Sustainable management and utilisation of resources is a guidance in pursuing the development of agricultural and forestry activity at dam area

The use of FLAC for the seismic evaluation of a concrete gravity dam including dam-water-sediments-foundation rock interaction

Seismic safety of 65m-high Licodia Eubea gravity dam located in Southeastern Sicily (Italy) has been assessed by means of advanced dynamic analyses of the tallest cross-section of the dam. The analyses were performed with two-dimensional, plane strain, finite difference FLAC code, taking into consideration simultaneously the dam-water-sediments-foundation interaction. The analyses have been carried out for an earthquake scenario corresponding to the Collapse Limit State (CLS), using a set of seven natural accelerograms for the simulations (both vertical and horizontal components). The physical and mechanical parameters of the concrete and foundation rock were obtained from in situ and laboratory tests campaigns. A validation of the dynamic model in terms of fundamental mode vibration periods of the dam was carried out first. Then, linear analyses allowed to understand whether nonlinear analyses were necessary. From nonlinear analyses results, Licodia Eubea dam has been found to have an acceptable margin of safety for CLS. The implementation of nonlinearity at the dam-foundation interface reduced the tensile stress within the structure. The dam might experience limited sliding along its base, but its structural integrity would be preserved

Temporal patterns in the upstream migration of European eels (Anguilla anguilla) at the Couesnon estuarine dam

The temporal migration patterns of European glass eel Anguilla anguilla at the Couesnon estuarine dam (Mont-Saint-Michel Bay, France)were examined in winter and spring 2004 and 2005. The dam which is located close to the river mouth constitutes a major obstacle for upstreammigrating glass eels. The migration was observed at different temporal scales, from within individual tides to complete tidal cycles between successive spring tides. The maximum number of glass eels arrived downstream of the dam at the beginning and in the middle of the flood tide. Glass eels migrated through the dam openings preferentially from the middle of the flood to the beginning of the ebb tide. Eel densities were highest during the second tide of each tide cycle that arrived at the estuarine dam and when the difference in water level between upstream and downstream of the dam was greatest, particularly at the end of the flood. Analysis of the influence of each environmental factor provided a good prediction of the glass eel recruitment peaks and, therefore, of the most favourable temporal windows for their migration. The water level and temperature were the most important environmental factors. These results provide the information needed for a dam-management program that is compatible with glass eel migration

Siltation Related to Beaver Dam Decomposition in the Little Kankakee River

The Little Kankakee River (LKR) in LaPorte County, Indiana is an uncommon example of a good, cold-water fishery in northwest Indiana. However, the river has variable sedimentation levels; deep silt often covers gravel and sand, smothering invertebrates, a key food source for higher trophic organisms. The LKR contains a naturally-decomposing, abandoned beaver dam. The purpose of this study is to monitor its impact upon upstream and downstream silt levels. This research intends to identify possible sources of variability in silt levels, benefiting restoration teams in determining effects of dam removals. Furthermore, understanding the impact and pattern of silt levels could aid the monitoring of river health. Water depth, silt depth, flow rate, and a description of the river bed are measured and recorded. Flow rate fluctuations will be charted against monthly precipitation, noting changes in flow. It is predicted that the beaver dam causes fluctuating siltation by collecting silt upstream and then releasing variable amounts during dam decomposition. Preliminary results indicate the narrow sections of the river have faster water flow and less silt. The beaver dam impedes flow, widens the river, and reduces velocity, allowing fine sediment to accumulate. It is predicted that if the beaver dam decomposes rapidly, then trapped silt above the dam will percolate rapidly through the system stopping at wide sections of the river. If the beaver dam deteriorates slowly, then silt accumulations may not be measureable and leave silt in the system much longer

Assessment of Productivity Status Using Carlson’s TSI and Fish Diversity of Goronyo Dam, Sokoto State, Nigeria

Goronyo Dam is the largest lentic waterbody in Sokoto, it was constructed to serve as flood control and used for irrigation activities. The study was conducted to evaluate productivity status and fish diversity of Goronyo Dam in 2016. Water samples were collected monthly from the Dam at two sampling sites (Upstream and Downstream). Water samples were collected using sterilized sampling bottles and analyzed in the Laboratory for physicochemical variables and the diversity of fish was evaluated through the use of a structured questionnaire. Depth and transparency were the only variables that did not show any statistically significant difference between the months. Productivity status of the dam was evaluated using Carlson’s Trophic State Index. The downstream has high TSI value of 16.54 compared to upstream with 13.00. A diversity of fishes from the shows that 3 species were more abundant in the dam, these were; Mormyrops species, Alestes species and Clupeid species. Factors contributed to the survival of fish species were an abundance of water and plankton in the dam. While factors affecting the distribution of fish species were pollution and predation

Dental Dam Utilization by Dentists in an Intramural Faculty Practice

Objectives: From casual observation of our colleagues, only a few individuals use the dental dam for operative procedures in their faculty practice. The purpose of this study was to obtain faculty perceptions of the dental dam, quantify its utilization in their intramural faculty practice, and determine the factors that influence dental dam usage.Materials and Methods: A survey containing 11 questions was sent to 19 faculty members who teach full time and maintain an intramural dental practice involving operative dentistry. Thirty electronic dental health records of the 19 providers were reviewed to gather the following information from restorative procedures they completed: isolation methods, tooth location and involved surfaces, and dental restorative material.Results: Overall, dental dam was utilized for 30% of all restorative procedures and was used less than 20% of the time for placement of class II and class III composite resins. Dental dam utilization rate by general dentists was 37% and 17.6% for prosthodontists. Those general dentists with prior history of military dental practice had a utilization rate of 78.6% and nonmilitary dentists only 7.6%. Eight faculty members responded to the questionnaire for a 42% return rate. Those who practiced dentistry in the military strongly agreed that the dental dam is the standard of care, improves their quality of restorative work, and should be documented in the dental record.Conclusions: There were significantly different dental dam utilization rates between general dentists and prosthodontists and between dentists with prior military experience and those without