Sci-Tech

Long comb Sawfish critically Endangered now
Sci-Tech

Long comb Sawfish critically Endangered now

The Long comb Sawfish, also known as narrow snout sawfish or green sawfish (Pristis zijsron) is a species of Sawfish in the family ''Pristidae''. These fish live in tropical and subtropical rivers, lakes, and coastal areas of the world. Long comb Sawfish are found in sizes range from 18 feet (550 cm) to 23.9 feet (730 cm). They have heavy, shark like body; flat on its ventral side. These Sawfish have long and narrow rostrum that is common to all sawfish. They have 25-34 rostral teeth on either side of the saw. Long comb sawfish consist of counter shaded body: dark olive or grey on upper surface and pale yellow or white on lower surface. Their diet consists primarily of crustaceans and mollusks. They are mainly found in bottom dwelling, shallow bays, coastal ...
International Submarine Cable fault affects internet in Pakistan
Sci-Tech

International Submarine Cable fault affects internet in Pakistan

"More internet capacity will be added within a couple of days" said PTCL spokesperson regarding the submarine cable situation PTA (Pakistan Telecommunication Authority) has issued an official notification on twitter claiming that they are working to fix the issue caused in international submarine cable. Reports suggests that the faults are in sea areas very close to Karachi. These faults are causing major problems especially during peak internet usage hours thus disturbing work in offices. "A fault in one of the international submarine cable's near Karachi is affecting some traffic in peak hours". "Work is underway to remove a fault reported in one of the international submarine cables in the sea near Karachi that affected some traffic" said PTA regarding the situation. PTA also...
Conspiracy theories about the Bermuda Triangle
Sci-Tech

Conspiracy theories about the Bermuda Triangle

Undoubtedly the most famous and researched mystery of the world is Bermuda Triangle. Scientists has discovered a lot of logical reasons of deaths and disappearances. But main question is still there...…why??? The Bermuda Triangle is one of those strange phenomenon that everyone seems to know about, but no one knows the truth behind it. It’s kind of like Area 51. The Bermuda Triangle, also known as Devil’s Triangle, is located in the Atlantic Ocean, between Miami, Bermuda and Puerto Rico. This is the place where annually 4 planes and 20 ships get missing under mysterious circumstances. So far no-one has logical answers on such incidents. It started in 1945 when 5 American army planes and 14 people get missing at this point. Last words from one of the pilot were "We are entering whit...
MANUFACTURING OF TURBINE BLADES
Sci-Tech

MANUFACTURING OF TURBINE BLADES

Turbine blades have a complex geometry and contain many areas of double curvature during the Manufacturing of Turbine Blades. Therefore the blades have to be precisely manufactured by the precision casting process of investment casting, also known as the ‘lost wax process’. Ceramic cores for the cooling channels are positioned within a master mould pattern. Wax is then injected into the mould cavity to produce a preform of the turbine blade. Pinning wires are then pressed through the wax to butt against the ceramic cores within the preform. Next, the preform is coated with multiple layers of ceramic, ultimately forming a thick casing around the preform with the pinning wires embedded in it. The assembly is heated to melt out the wax and then tired to strengthen the ceramic. The result...
Significance of Tangram Technology and Water in Cooling Tower
Sci-Tech

Significance of Tangram Technology and Water in Cooling Tower

Amount of flow to the process always related to the demand by pump sequencing with multiple pumps or using variable-speed drive controllers with pressure and flow rate as a control signal which is the Significance of Tangram Technology. Quality water plays a significant role in cooling water system under tangram technology. It is considered that cooling towers and its mechanical components represent the cooling system hardware and the water flowing through the cooling system is the system software as shown in figure 1. Significance of Tangram Technology using cooling-water system normally has highly efficient pumps supplying both the process and the cooling system. As many researchers have agreed about 'Significance of Tangram Technology' using cooling towers to control tempera...