aalborg / ˈ ɔː l b ɔːr ɡ /, also us: / ˈ ɑː l-, ˈ ɔː l b ɔːr /, danish: ˈʌlˌpɒˀ , also spelt ålborg, is denmark's fourth largest city with an urban population of 139,016.. the twin city nørresundby is 600 metres 2,000 ft across the limfjord.with a population of 215,312 as of 2019 , the municipality of aalborg is the third most populous in the country after .
typical applications include monocoque bodies for f1 racing cars, helicopter rotor blades, tennis, table tennis, badminton and squash rackets, kayaks, cricket bats, and field hockey, ice hockey and lacrosse sticks. kevlar is an alternative in certain parts of light aircraft construction. the wing leading edge is one application, kevlar being .
the roxburgh dam is the earliest of the large hydroelectric projects in the southern south island of new zealand.it lies across the clutha river / mata-au, some 160 kilometres 99 mi from dunedin, some 9 kilometres 5.6 mi to the north of the town of roxburgh.the settlement of lake roxburgh village is close to the western edge of the dam.
cement was mostly sourced from the milburn lime and cement company's factory at burnside near dunedin or via ship into port chalmers. a major expansion was undertaken by milburn in order to supply the cement. aggregate was obtained from the clutha river at commissioner's flat, while water came from the river.
policy makers often debate the constraints and opportunities of renewable energy.. renewable electricity production, from sources such as wind power and solar power, is sometimes criticized for being variable or intermittent.however, the international energy agency has stated that its significance depends on a range of factors, such as the penetration of the renewables concerned.
engineering is the use of scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. the discipline of engineering encompasses a broad range of more specialized fields of engineering, each with a more specific emphasis on particular areas of applied mathematics, applied science, and types of application.
a trunnion from old french 'trognon', trunk is a cylindrical protrusion used as a mounting or pivoting point. first associated with cannons, they are an important military development. alternatively, a trunnion is a shaft that positions and supports a tilting plate. this is a misnomer, as in reality it is a cradle for the true trunnion.
vestas wind systems a/s is a danish manufacturer, seller, installer, and servicer of wind turbines that was founded in 1945. the company operates manufacturing plants in denmark, germany, india, italy, romania, the united kingdom, spain, sweden, norway, australia, china, brazil and the united states, and employs more than 24,400 people globally.. as of 2013, it is the largest wind turbine .
a coping saw is a type of bow saw used to cut intricate external shapes and interior cut-outs in woodworking or carpentry. it is widely used to cut moldings to create coped rather than mitre joints. it is occasionally used to create fretwork though it is not able to match a fretsaw in intricacy of cut, particularly in thin materials. coping saw blades are always thicker and much coarser .
in germany, wind turbine blades are commercially recycled as part of an alternative fuel mix for a cement factory. in the usa the town of casper, wyoming has buried 1,000 non-recyclable blades in its landfill site, earning $675,000 for the town.