State-owned Rail Vikas Nigam Ltd (RVNL) on Tuesday (February 18 ... according to a stock exchange filing. The ₹554.47-crore contract involves building one elevated and eight at-grade stations at ...

An expanding compressed gas passing the VT tangential nozzles develops into a ... This energy converts to heat through friction on the vortex tube walls. The inner (chilled) layers exit the VT through ...

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Why a gas-discharge tube is an important component for overvoltage protection. The history of spark gaps—predecessors to GDTs—includes a role in famous movies. How a new, compact, surface ...

Gear up for your next cookout by upgrading your grill with these top gas grill options, tested and approved by our CNET experts. The Presidents Day weekend is past us but barbecue weekends shouldn ...