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An Ecologist Explains His Contested View of Planetary Limits

2013-09-16 16:03:00| Climate Ark Climate Change & Global Warming Newsfeed

New York Times: Its no surprise that Erle C. Ellis, an ecologist at the University of Maryland, Baltimore County, faced resistance when The Times published his Op-Ed article titled Overpopulation is Not the Problem. After all, his views clash with decades of assertions that were in overshoot as a species, sucking up far more resources than the planet can continue to offer. His answer to my enduring question here Which Comes First, Peak Everything or Peak us? is the latter. We are different than bacteria...

Tags: view limits explains contested

 

Planetary Gearhead (32 mm) accommodates high radial loads.

2013-07-18 14:30:17| Industrial Newsroom - All News for Today

Single-stage planetary gearheads GP 32 AR and GP 32 CR suit applications that place increased stress on output stage due to radial forces at work. Output stage bearings are positioned as far apart as possible, allowing compensation for radial forces up to 140 N. Reinforced planetary carrier has separate bearings, and axles of planet gears are securely fixed in both halves. For max torque and life span, axles are available in ceramic; short-term permissible torque reaches up to 1.25 Nm. This story is related to the following:Planetary Gearheads

Tags: high loads radial planetary

 
 

Planetary Gearboxes feature maintenance-free design.

2013-05-16 14:30:26| Industrial Newsroom - All News for Today

Offered in 3 sizes and multiple gear ratios, i-series is suited for applications that have stringent space limitations yet require high yield torque. Tight tolerances and long-life lubrication enable quiet operation, while low backlash minimizes friction and wear. Available with AC, PMDC, and brushless motors, units are pre-engineered with custom interface to mate with Groschopp motors. Applications include medical instruments, power tools, conveyors, door systems, and floor care equipment. This story is related to the following:High Torque Motors | Brushless Motors | Custom Gearmotors | Planetary Gearheads | Planetary Gearboxes

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On Earth Day 2013, a planetary report card on global warming

2013-04-23 10:00:00| Climate Ark Climate Change & Global Warming Newsfeed

Christian Science Monitor: When Earth Day observances first began in 1970, Cleveland had recently doused a pollutant-fueled fire on a section of the Cuyahoga River. Cities were often shrouded in thick blankets of smog. And large portions of Lake Erie were so fouled by industrial, farm, and sewage runoff that sections of the 241-mile-long lake were pronounced dead. As an environmental issue, global warming was far down the list of concerns. At the time, a small number of climate scientists noted a general cooling trend...

Tags: day report card global

 

Carbon's role in planetary atmosphere formation

2013-04-08 23:30:00| Climate Ark Climate Change & Global Warming Newsfeed

ScienceDaily: A new study in Proceedings of the National Academy of Sciences suggests that the way carbon moves from within a planet to the surface plays a big role in the evolution of a planet's atmosphere. If Mars released much of its carbon as methane, for example, it might have been warm enough to support liquid water. A new study of how carbon is trapped and released by iron-rich volcanic magma offers clues about the early atmospheric evolution on Mars and other terrestrial bodies. The composition of...

Tags: role formation atmosphere planetary

 

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