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Topic Review
The Additive Manufacturing Technology
Additive manufacturing is defined as a process based on the superposition of layers of materials in order to obtain 3D (three-dimensional) parts.
  • 658
  • 30 Nov 2022
Topic Review
Mercedes-Benz 9G-Tronic Transmission
9G-Tronic is Mercedes-Benz's trademark name for its nine-speed automatic transmission, starting off with the W9A 700 (Wandler-9-Gang-Automatik bis 700 Nm Eingangsdrehmoment; converter-9-gear-automatic with 516 lb-ft maximum input torque; type 725.0) as core model.
  • 6.1K
  • 30 Nov 2022
Topic Review
Environmental Aspects of the Electric Car
Electric cars (or electric vehicles, EVs) have different environmental impacts compared to conventional internal combustion engine vehicles (ICEVs). While aspects of their production can induce similar, less or alternative environmental impacts, some models produce little or no tailpipe emissions, and some have the potential to reduce dependence on petroleum and greenhouse gas emissions, depending on the source of electricity used to charge them, and health effects from air pollution. Electric motors are significantly more efficient than internal combustion engines and thus, even accounting for typical power plan efficiencies and distribution losses, less energy is required to operate an EV. Producing batteries for electric cars requires additional resources and energy, so they may have a larger environmental footprint from the production phase. EVs also generate different impacts in their operation and maintenance. EVs are typically heavier and could produce more tire, brake, and road dust, but their regenerative braking could reduce brake particulate pollution. EVs are mechanically simpler, which reduces the use and disposal of engine oil.
  • 1.8K
  • 30 Nov 2022
Topic Review
Ground Mobility Vehicle (Proposed Vehicle)
The Ground Mobility Vehicle (GMV) formerly known as the Ultra Light Combat Vehicle (ULCV), is a U.S. Army proposed airdroppable light off-road vehicle to improve the mobility of light infantry brigades. In March 2015, the Army changed the name of the ULCV to the Ground Mobility Vehicle. GMV is intended to be carried internally in a CH-47 Chinook or externally by a UH-60 Black Hawk. In order to be survivable but transportable, the GMV would be lightly armored and use speed, maneuverability, and off-road mobility to avoid major threats.
  • 365
  • 30 Nov 2022
Topic Review
Taurus Millennium Series
The Taurus Millennium series is a product line of double-action only (DAO) and single-action/double-action hammerless, striker-fired, short recoil operated, semi-automatic pistols manufactured by Forjas Taurus S/A (Taurus Forge) in Porto Alegre Brazil . The Millennium line was designed to contend in the civilian concealed carry firearms market, and to be sold as backup weapons for law enforcement officers.
  • 1.1K
  • 30 Nov 2022
Biography
William John Macquorn Rankine
William John Macquorn Rankine (/ˈræŋkɪn/) FRSE FRS LLD (5 July 1820 – 24 December 1872) was a Scottish mechanical engineer who also contributed to civil engineering, physics and mathematics. He was a founding contributor, with Rudolf Clausius and William Thomson (Lord Kelvin), to the science of thermodynamics, particularly focusing on the first of the three thermodynamic laws. He developed
  • 801
  • 30 Nov 2022
Biography
Kevin Systrom
Kevin York Systrom (born December 30, 1983)[1] is an American entrepreneur and programmer, best known as the co‑founder of Instagram along with Mike Krieger. Systrom was born in 1983 in Holliston, Massachusetts. He is the son of Diane (Pels), a marketing executive at Zipcar, who also worked at Monster and Swapit during the first dotcom bubble,[2] and Douglas Systrom, Vice President in Human
  • 2.4K
  • 30 Nov 2022
Topic Review
HP Series 80
The Hewlett-Packard series 80 of small scientific desktop computers was introduced in 1980, beginning with the popular HP-85 targeted at engineering and control applications. They provided the capability of the HP 9800 series desktop computers with an integrated monitor in a smaller package including storage and printer, at half the price.
  • 1.0K
  • 30 Nov 2022
Biography
Ursula Burns
Ursula M. Burns (born September 20, 1958), is an American businesswoman. She is the chairman of VEON,[1] a senior advisor to Teneo,[2] and a non-executive director of the beverage company Diageo since April 2018, among other directorships[3] such as Uber.[4][5] In 2009, Burns became CEO of Xerox, the first black woman CEO to head a Fortune 500 company,[6] and the first woman to succeed another a
  • 939
  • 30 Nov 2022
Topic Review
Green and Blue Hydrogen Production in Colombia
Hydrogen is the most abundant element in nature, but it cannot be considered an energy source by itself because it is impossible to find it in its elemental form in nature. Colombia, a privileged country in terms of diversity, availability of natural resources, and geographical location, has set a roadmap for hydrogen as part of the energy transition plan proposed in 2021. To reduce its emissions in the mid-term and foster its economy, hydrogen production should be green and blue, with specific targets set for 2030 for the hydrogen costs and produced quantities. A comparison is made concerning the state-of-the-art production of blue and green hydrogen and how Colombia performs in each pathway.
  • 917
  • 30 Nov 2022
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