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Caliraya Lake
Lake Caliraya is a man-made lake situated in the municipalities of Lumban, Cavinti, and Kalayaan in Laguna province, Philippines. Created in 1939, the lake has developed as a popular spot for water sports and outdoor recreation including fishing. Surrounding the lake are a number of resorts and vacation homes which cater to tourists. History Lake creation Lake Caliraya was created after the construction of Caliraya Dam, an embankment dam started in 1939 by US Army Corps of Engineers Chief in the Philippines, Lieutenant Colonel (later Major General) Hugh J. Casey, with the approval of Philippine Commonwealth President Manuel L. Quezon. The Caliraya River was dammed at its outlet from a large flat plateau area providing a large water reservoir for generating hydroelectric power for Southern Luzon. The dam was over high from which a diversion canal was constructed several miles to the head of a steep slope about 950 feet above Laguna de Bay. Large penstocks were constructed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landsat
The Landsat program is the longest-running enterprise for acquisition of satellite imagery of Earth. It is a joint NASA / USGS program. On 23 July 1972, the Earth Resources Technology Satellite was launched. This was eventually renamed to Landsat 1 in 1975. The most recent, Landsat 9, was launched on 27 September 2021. The instruments on the Landsat satellites have acquired millions of images. The images, archived in the United States and at Landsat receiving stations around the world, are a unique resource for global change research and applications in agriculture, cartography, geology, forestry, regional planning, surveillance and education, and can be viewed through the U.S. Geological Survey (USGS) "EarthExplorer" website. Landsat 7 data has eight spectral bands with spatial resolutions ranging from ; the temporal resolution is 16 days. Landsat images are usually divided into scenes for easy downloading. Each Landsat scene is about 115 miles long and 115 miles wide (or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philippine Commonwealth
The Commonwealth of the Philippines ( es, Commonwealth de Filipinas or ; tl, Komonwelt ng Pilipinas) was the administrative body that governed the Philippines from 1935 to 1946, aside from a period of exile in the Second World War from 1942 to 1945 when Japan occupied the country. It was established following the Tydings–McDuffie Act to replace the Insular Government, a United States territorial government.. The Commonwealth was designed as a transitional administration in preparation for the country's full achievement of independence. Its foreign affairs remained managed by the United States. During its more than a decade of existence, the Commonwealth had a strong executive and a Supreme Court. Its legislature, dominated by the Nacionalista Party, was at first unicameral, but later bicameral. In 1937, the government selected Tagalog – the language of Manila and its surrounding provinces – as the basis of the national language, although it would be many years befor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New People's Army
The New People's Army ( fil, Bagong Hukbong Bayan), abbreviated NPA or BHB, is the armed wing of the Communist Party of the Philippines (CPP), based primarily in the Philippine countryside. It acts as the CPP's principal organization, aiming to consolidate political power from what it sees as the present "bourgeois reactionary puppet government" and to aid in the "people's democratic revolution". Founded on March 29, 1969, by the collaboration of Jose Maria Sison and former members of the Hukbalahap led by Bernabe Buscayno, the NPA has since waged a guerrilla war based on the Maoist strategy of protracted people's war. The NPA is one of the key figures in the ongoing Communist rebellion in the Philippines, the longest ongoing conflict in the country. The NPA operates in the Philippine countryside, where the CPP alleges it has established itself in 73 out of the country's 81 provinces, across over 110 guerrilla fronts. In guerrilla zones where the NPA has entrenched itself, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squatter
Squatting is the action of occupying an abandoned or unoccupied area of land or a building, usually residential, that the squatter does not own, rent or otherwise have lawful permission to use. The United Nations estimated in 2003 that there were one billion slum residents and squatters globally. Squatting occurs worldwide and tends to occur when people who are poor and homeless find empty buildings or land to occupy for housing. It has a long history, broken down by country below. In developing countries and least developed countries, shanty towns often begin as squatted settlements. In African cities such as Lagos much of the population lives in slums. There are pavement dwellers in India and in Hong Kong as well as rooftop slums. Informal settlements in Latin America are known by names such as villa miseria (Argentina), pueblos jóvenes (Peru) and asentamientos irregulares (Guatemala, Uruguay). In Brazil, there are favelas in the major cities and land-based movements. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Expatriate
An expatriate (often shortened to expat) is a person who resides outside their native country. In common usage, the term often refers to educated professionals, skilled workers, or artists taking positions outside their home country, either independently or sent abroad by their employers. However, the term 'expatriate' is also used for retirees and others who have chosen to live outside their native country. Historically, it has also referred to exiles. Expatriates are immigrants or emigrants who maintain cultural ties such as the language of their country of origin. Etymology The word ''expatriate'' comes from the Latin terms '' ex'' ("out of") and ''patria'' ("native country, fatherland"). Semantics Dictionary definitions for the current meaning of the word include: :Expatriate: :* 'A person who lives outside their native country' (Oxford), or :* 'living in a foreign land' (Webster's). These definitions contrast with those of other words with a similar meaning, such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Power Corporation
The National Power Corporation ( fil, Pambansang Korporasyon sa Elektrisidad, also known as Napocor, NPC or National Power), is a Philippine government-owned and controlled corporation that is mandated to provide electricity to all rural areas of the Philippines by 2025 (known as "missionary electrification"), to manage water resources for power generation, and to optimize the use of other power generating assets. Prior to the deregulation of the power industry in 2001, NPC was a vertically integrated power utility engaged in the production, transmission and distribution of electric power and used to be the largest provider and generator of electricity in the Philippines. It was also the principal power provider for Manila Electric Company (Meralco), the only power distributor in the Metro Manila area and its nearby provinces (including all towns or cities such as Santo Tomas, Batangas on some of their respective provinces that cover the Meralco franchise). NPC also served as the o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horsepower
Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are the mechanical horsepower (or imperial horsepower), which is about 745.7 watts, and the metric horsepower, which is approximately 735.5 watts. The term was adopted in the late 18th century by Scottish engineer James Watt to compare the output of steam engines with the power of draft horses. It was later expanded to include the output power of other types of piston engines, as well as turbines, electric motors and other machinery. The definition of the unit varied among geographical regions. Most countries now use the SI unit watt for measurement of power. With the implementation of the EU Directive 80/181/EEC on 1 January 2010, the use of horsepower in the EU is permitted only as a supplementary unit. History The development of the stea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tailrace
A water wheel is a machine for converting the energy of flowing or falling water into useful forms of power, often in a watermill. A water wheel consists of a wheel (usually constructed from wood or metal), with a number of blades or buckets arranged on the outside rim forming the driving car. Water wheels were still in commercial use well into the 20th century but they are no longer in common use. Uses included milling flour in gristmills, grinding wood into pulp for papermaking, hammering wrought iron, machining, ore crushing and pounding fibre for use in the manufacture of cloth. Some water wheels are fed by water from a mill pond, which is formed when a flowing stream is dammed. A channel for the water flowing to or from a water wheel is called a mill race. The race bringing water from the mill pond to the water wheel is a headrace; the one carrying water after it has left the wheel is commonly referred to as a tailrace. Waterwheels were used for various purposes from ag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectric Plant
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penstock
A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydro turbines and sewerage systems. The term is inherited from the earlier technology of mill ponds and watermills. Hydroelectric systems and dams Penstocks for hydroelectric installations are normally equipped with a gate system and a surge tank. They can be a combination of many components such as anchor block, drain valve, air bleed valve, and support piers depending on the application. Flow is regulated by turbine operation and is nil when turbines are not in service. Penstocks, particularly where used in polluted water systems, need to be maintained by hot water washing, manual cleaning, antifouling coatings, and desiccation. The term is also used in irrigation dams to refer to the channels leading to and from high-pressure sluice gates. Penstocks are also used in mine tailings dam construction. The penstock is usually situated fairly close to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laguna De Bay
Laguna de Bay (Spanish language, Spanish for "Lagoon/Lake of Bay, Laguna, Bay"; tl, Lawa ng Bay, ), also known as Laguna Lake, is the List of lakes of the Philippines, largest lake in the Philippines. It is located southeast of Metro Manila, between the Provinces of the Philippines, provinces of Laguna (province), Laguna to the south and Rizal to the north. A freshwater lake, it has a surface area of 911–949 km² (352–366 sq mi), with an average depth of about and an elevation of about one meter above sea level. The lake is shaped like a crow's foot, with two peninsulas jutting out from the northern shore and filling the large volcanic Laguna Caldera. In the middle of the lake is the large island of Talim Island, Talim. The lake is one of the primary sources of freshwater fish in the country. Its water drains to Manila Bay via the Pasig River. Environmental issues in the Philippines, Environmental issues such as water quality problems created by population pressure an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
