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dams Definitions

verb

dam

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  • geotechnical engineers work to make sure that foundations for built objects ranging from streets and buildings to runways and dams, are solid. they focus on how structures built by civil engineers, such as buildings and tunnels, interact with the earth (including soil and rock). in addition, they design and plan for slopes, retaining walls, and tunnels. bls.gov

  • correctly using male condoms and other barriers like female condoms and dental dams, every time, can reduce (though not eliminate) the risk of sexually transmitted diseases (stds), including human immunodeficiency virus (hiv) and viral hepatitis. they can also provide protection against other diseases that may be transmitted through sex like zika and ebola. using male and female condoms correctly, every time, can also help prevent pregnancy. cdc.gov

  • southeast asian states have enhanced border surveillance to check the spread of avian flu; talks continue on completion of demarcation with thailand but disputes remain over islands in the mekong river; cambodia and laos have a longstanding border demarcation dispute; concern among mekong river commission members that china's construction of eight dams on the upper mekong river and construction of more dams on its tributaries will affect water levels, sediment flows, and fisheries; cambodia and vietnam are concerned about laos' extensive plans for upstream dam construction for the same reasons cia.gov

  • “there are no two traumatic brain injuries that are alike, just like there are no two people that are alike,” says kristen dams-o’connor, phd, an associate professor in the department of rehabilitation medicine at the icahn school of medicine at mount sinai hospital in new york city. “return-to-work trajectories can vary tremendously.” everydayhealth.com

  • the tigris is subject to sudden, devastating floods, and the wadi ath tharthar scheme, iraq's largest flood-control project, protects baghdad and vicinity from floods in addition to irrigating c.770,000 acres (311,600 hectares) of land. since the 1990s a series of dams has been constructed on the tigris and euphrates in turkey. the plans for the southeast anatolia project ultimately call for 22 dams that altogether will provide water to irrigate more than 3,700,000 acres (1.5 million hectares) of land. a series of hydroelectric power stations is also being built; by 2014 more than half the dams had been completed. it is unclear to what degree the dams and irrigation may cause problems in countries downstream that rely on the river's resources. factmonster.com

  • benefit–cost analysis (bca). bca is a framework for evaluating the effects of public policy choices on social welfare. first employed in the united states early in the twentieth century to assess federal projects such as canals and dams, bca gained broader application in the 1960s, initially as part of the defense department’s planning, programming and budgeting system. in 1981, president reagan issued an executive order (e. o. 12291) that directed federal agencies to conduct regulatory impact analyses for major initiatives, including an assessment of costs and benefits (zerbe et al., 2010).  in 2003, the office of management and budget (omb) issued circular a-4, which established detailed methods for identifying the benefits and costs of proposed regulatory actions, including health impacts, and standards for what agencies should include in a bca (omb, 2003). hhs.gov

  • the tigris is subject to sudden, devastating floods, and the wadi ath tharthar scheme, iraq's largest flood-control project, protects baghdad and vicinity from floods in addition to irrigating c.770,000 acres (311,600 hectares) of land. since the 1990s a series of dams has been constructed on the tigris and euphrates in turkey. the plans for the southeast anatolia project ultimately call for 22 dams that altogether will provide water to irrigate more than 3,700,000 acres (1.5 million hectares) of land. a series of hydroelectric power stations is also being built; by 2014 more than half the dams had been completed. it is unclear to what degree the dams and irrigation may cause problems in countries downstream that rely on the river's resources. infoplease.com

  • 6. photographic copy of original construction drawing, no date, from files in the office of the chief engineer, u.s. fish and wildlife service regional office, denver. gate control structure (generic drawing used for all five dams in refuge) - j. clark salyer national wildlife refuge dams, along lower souris river, kramer, bottineau county, nd 8 x 10 in.haer nd,5-kra.v,1--6 | haer nd,5-kra.v,1--6 loc.gov

  • the next best method is the use of latex barriers. this involves placing a condom on the penis as soon as an erection is achieved in order to avoid exposure to pre-ejaculatory and ejaculatory fluids that contain infectious hiv. for oral sex, condoms should be used for fellatio (oral contact with the penis) and latex barriers (dental dams) for cunnilingus (oral contact with the vaginal area). a dental dam is any piece of latex that prevents vaginal secretions from coming in direct contact with the mouth. although such dams occasionally can be purchased, they are most often created by cutting a square piece of latex from a condom. medicinenet.com

  • "we have been looking at a number of alternatives for the standard ppe," cdc stated. "we evaluated a variety of items such as surgical masks, halloween masks, dental dams, and baby diapers. in our extensive 2-day study, we found that surgical masks are too porous to prevent spread of the covid-19 virus, and halloween masks are in too short supply at this time of year. dental dams seemed promising initially, but when we field-tested, we found that doctors had to keep touching their faces to hold them in place." medpagetoday.com

  • barrier methods include condoms (male and female) and dental dams (used during oral sex). these barriers can reduce the risk of getting the zika virus during sex. to be effective, condoms and dental dams must be used correctly. they should be placed before sexual activity begins and remain until it ends (see condoms). they should be used each time, during vaginal, anal, and oral sex. merckmanuals.com

  • the small and mountainous country called laos in southeast asia is one of the last one-party communist states together with china, north korea, vietnam, and cuba. it has achieved significant economic growth in recent years because of robust commodity exports, massive multi-billion dollar road, high-speed rail infrastructure projects, massive hydroelectric dams, and large investments from countries like china, thailand and vietnam. the communist government imposed a dogmatic soviet-style command economy system, replacing the private sector with state enterprises and cooperatives; centralizing investment, production, trade, and pricing; and creating barriers to internal and foreign trade. nationmaster.com