International journal of physical sciences and engineering
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Use of concrete debris: Sub-base material for road structures
Get PDFNatural disasters in a very short time are capable of destroying what man has built using different types of resources, the construction of buildings, houses, etc. In their construction processes, they use different materials in a separate way that mixes and this process give them hardness and resistance to these materials. When they are destroyed they lose their individual properties and become waste; this research aims to make a study of the NEVI-12-MTOP standards, to be able to reuse the debris materials generated by the destruction of the earthquake on April 16. A bibliographic search was carried out related to the use given to waste caused by earthquakes in different countries. In the city of Portoviejo, the largest amount of debris was a concrete waste, and it can be concluded that these materials can be used as sub-base material in the road structures, so the reuse method was proposed. In particular, the characteristics of the residual materials were obtained as a result of the analysis of environmental, economic and material safety feasibility
Attitudes toward the use of internet for students
Get PDFIn this era, the internet has become the main media utilized by many people. In Indonesia, teenagers use the internet to find some information related to school, work, and lifestyle. The Internet makes a range of distance and time is no longer an obstacle in obtaining information. It can be accessed in every place and every time. However, if the teenagers do not use the internet wisely or they use it to find some negative contents on websites, it will result in negative impacts on them. This study aimed at investigating some attitudes toward the use of the internet for students. The samples of the study were students in SMA N 1 Kediri. The method used was a survey by asking the students to fill out a questionnaire. The findings show that most of the students give a positive attitude toward the use of the internet for students. Most of them argue that crimes will be decreased if the students used the internet wisely. Also, there will be many creative ideas initiated by students for the development of this country.  
Web-based speed monitoring tools
Get PDFThe development of communication technology and science in this globalization era is very rapid. In utilizing this technology using laptops and the internet using Web as a means to monitor wind speed data in real-time. Wind measurement using an anemometer is a field from the weather forecasting agency by making an intermediary tool similar to the one on the weather forecast station using a simple anemometer that is connected to the laptop as a data observer. Anemometer or cup type wind sensor that has 3 cup counter wind speed gauges. In addition to using wind sensors, it is also needed ATmega328 microcontroller, SIM800L, and DHT11 sensors. Besides being able to measure wind speed in real time this tool can also measure air temperature and humidity. Wind speed measurement data can be accessed through a database and web that can be accessed on a server computer
Application design in determining the shortest route using tabu search algorithm
Get PDFThis research designed a website application using Tabu Search Algorithm. We applied the Queuing method to find the shortest distance. Applications with this algorithm can provide the fastest route in the experiment of searching the shortest distance. We conducted this research by applying the examination in Rote Island, Indonesia. On the island, we examined the shortest distance from a starting point to another tourism place. In another side, this system utilized Google Map services to retrieve data about the distance between locations to another location with driving mode. The Google Maps service application is received in the form of translated JavaScript Object Notation (JSON), in order to be used as data and parameters in executing tabu search algorithms. The system was built using web-based through Hypertext Preprocessor (PHP) programming language, HyperText Markup Language (HTML), and Javascript, so it can be accessed and run by all devices that run the browser
Social impact of renewable energy sources in the province of Loja: Ecuador
Get PDFIn the future energy development of the planet, renewable energies are decisive, because of the benefits that these entail in their use, besides being inexhaustible; These are used in different ways, in heating in electrical energy, electrochemistry, among others. These energy sources in its implementation have had a social impact by generating jobs, improving the quality of life in remote areas, improving health by reducing pollution; In addition to the levels of knowledge reached not only by professionals but also the population in general. In Ecuador, during the last 10 years, in the introduction of renewable energies, fundamentally hydraulic projects have been worked on. Which four are already in operation, this is how the country has been consolidated, being one of the most energy-rich in the region, in the same way, this has generated sources of work for many people; besides avoiding large pollution to the atmosphere. In the province of Loja, a wind farm, photovoltaic power plants are deployed, and public lighting with photovoltaic systems is used in some sectors of the City. The objective of the work is to demonstrate the social impact that the introduction of these technologies has had in the province of Loja, not only in the social sphere but also cultural, economic, environmental and tourist
Utilizing turbine ventilator as supplier of electrical energy resources for home information
Get PDFThe power plant has been created with turbine ventilator as a source of electrical energy for lighting. Voltage generator generated when wind speed between 0 m/s up to 6 m/s with no given load is between 0 volts up to 8.38 volts. Generator-generated electricity can be utilized in everyday life after going through several processes like converting the voltage from DC to AC by using a DC to AC inverter and increasing the AC voltage to a 220-volt voltage using a transformer. In this study using 5 watts LED lamp that can be used to help to light
A feasibility study for social and general facilities: Perumnas Tanjung Karang Permai Mataram
Get PDFThe increasing number of population growth affects the emergence of problems in Perumnas Tanjung Karang Permai to be more complex, one of them is situation problem, availability of social facilities and public facilities. Thus, it is necessary to sight more in-depth of the feasibility of availability, condition, and management of social and public facilities in PERUMNAS Tanjung Karang Permai Mataram. Standardized feasibility is taken from the Regional Regulation of Mataram City No. 4 the year 2016 Article 9 saying about the provision of infrastructure by the developer at least 30% of the land area of housing and standard that is currently set by the government namely SNI 03-1733-2004 on the procedures of regional planning housing town. This study aims at identifying the level of availability, condition or capacity of social facilities and public facilities to the needs of the population seen from the population and land area of social facilities and public facilities. The existence of location mapping of Social Facilities and Public Facilities is to explain the availability and spatial aspects of the condition in Perumnas Tanjung Karang Permai Mataram. The analysis is done by comparing the number of population with the availability of social facilities and public facilities. If there is an imbalance between the availability of social facilities and public facilities with the total population, then the existing condition can be said to be inadequate
The concentration of radon gas in air-conditioned indoor: Air quality can increase the potential of lung cancer
Get PDFResearch has been conducted on the concentration of radon gas in air quality in air-conditioned rooms that can increase the potential for lung cancer. Indoor air quality is influenced by factors such as room occupants, material buildings, equipment and furniture in the room, contamination of pollutants from the outdoor air, seasonal influences, lighting, temperature, humidity, indoor noise, and ventilation. In addition, indoor air quality can be affected by radon gas. The concentration of radon gas is relatively high compared to other natural radionuclides. It is estimated that around 55% of the radionuclide concentration in nature comes from radon gas and is the largest source of radiation received by the world population, which is around 1.3 mSv/year. Based on the Risert of the National Institute of Occupational Health and Safety (NIOSH), America in 1997 as many as 52% of respiratory diseases associated with sick building syndrome stemmed from a lack of ventilation in the room and poor AC room performance, thus increasing the potential for lung cancer. The method used in this study is to determine the physical quantity and concentration of the radiation dose of radon gas in the room. The results show that air quality in terms of temperature, humidity, and noise is significantly still in compliance with environmental health requirements according to Kepmenkes No. 1405/Menkes/SK/XI/2002. But the lighting in the room has not been significantly fulfilled. Rooms with gypsum ceilings increase radiation doses and air-conditioned rooms can accumulate radiation doses evenly in the room
Utilization of Bali traditional acoustic tools as physical repellent of bird pest on rice paddy crop
Get PDFThe purpose of this research is to identify the diversity of Bali’s traditional acoustic tools as a physical repellent of bird pest on rice paddy crop that characterizes local Balinese wisdom as well as analyze their existence and possible modification of tools. The method used is survey method through questionnaire and direct interview to farmers (age 60 years and over) in three rice paddy crop centers, namely Tabanan (6 villages), Badung (5 villages), and Gianyar (2 villages) regencies. Based on the survey of 127 respondents, 52 people from Tabanan, 42 from Badung and 33 from Gianyar, it was found that the most common types of Bali’s traditional acoustic tools used to repel bird pest by farmers, in Balinese terms, are kepuakan (91.3%), followed by pindekan (5.5%), pecut (2.4%) and kulkul (0.8%). Kepuakan is more chosen because it is considered more effective and comfortable to use to repel bird pest in rice paddy crop. According to the respondents, the most effective sequence of acoustic tools from high to low is kepuakan (80.3%), followed by pecut (10.2%), pindekan (8.7%), kulkul (0.8 and for the comfort of the use of tools, the order is kepuakan (85,8%). followed by pindekan (9.4%), kulkul (3.9%) and pecut (0.8%). All the traditional tools are the result of handicrafts Bali farmers use natural materials and are a form of the local wisdom of Balinese farmers that are certainly environmentally friendly
Pre and post Mount Merapi eruption of free air anomaly in 2010
Get PDFMount Merapi eruption in 2010 was one type of eruption with large scale during the last 100 years. Eruptions that was occurred resulting topographic changes in the peak of Mount Merapi, and the possibility of changing the subsurface structure. The research was part of a large study that has been conducted to assess the subsurface changes of pre-and post-eruption of Mount Merapi in 2010. The study discussed observations of free air anomalies pre and after the 2010 eruption. There were grouped into three periods. Processing of air anomalies was free to use using the 2nd orde calculation method. The results obtained were the changes in the contours of the FAA Mount Merapi in 1988, 1998, and 2011 as a result of topographic changes that occurred in the peak area and the alleged dynamics of the surface. The dynamics at Mount Merapi in the 1988 to 2011 period occurred in the northwest, southeast, east, and northeast of the study area and southeast of the peak of Mount Merapi