Dear Gurus ,
I am having a problem with the industrial induction heater.Recently due to interlock problem , a metal bar hit the induction coil.( made of copper tube )The coil broken and the cooling water started to leak.
Due to tight schedule , i need to run the machine as soon as
For one of my document the following detail is required
Is there is any bandwidth of voltage level, based on its descriptions like LV,MV,HV,EHV (ie. upto 1000 v it is LV)?
1) There are 28 Sump Lift station spread over a Vast area,Our client wants to upgrade the existing System
2) There is a proposal for Automatic Dewatering from Hydrocarbon Tanks
If we use Conevtional 4-20 ma System then we will have to dig the entire refinery to bring it to Central system,plus
Is the Vietnamese government following China’s example, and muffling online dissent to pursue its own political ends? Internet giant Google seems to think so. Writing on the company’s online security blog, Neel Mehta of Google’s security team has revealed that tens of thousands of Vietnamese computers were subject to a potent virus attack this week–and that the attack targeted activists who are opposed to a Chinese mining project in Vietnam.
Google writes that the activists mistakenly downloaded malicious software that infected their computers. The infected machines could be used to spy on the users, and were also used to attack Web sites and blogs that voiced opposition to the mining project. This cyber attack, Google says, was an attempt to “squelch” opposition to bauxite mining in Vietnam, a highly controversial issue in the country. The computer security firm, McAfee Inc, which detected the malware, went a step further, saying its creators “may have some allegiance to the government of the Socialist Republic of Vietnam.” The Vietnamese Foreign Ministry had no immediate comment [Moneycontrol].
Google’s current spat with China began with a similar accusation, when the company accused Beijing of hacking into and spying on Chinese activists’ gmail accounts. Just this week, journalists in China said their email accounts were compromised because of yet another spyware attack.
In Vietnam, activists were angered by state plans to allow Chinese mining company, Chinalco, to start mining in the country’s central highlands. Bauxite is used in making aluminum and is an important natural resource for Vietnam, but critics have argued that the new project will have serious environmental consequences and will also displace ethnic minorities. Online discussion of the project soon erupted. Although the discussion was mostly centered on social and environmental concerns, it veered into sensitive territory when bloggers started tapping into the country’s latent Sinophobia [Financial Times]. Some bloggers worried about the influx of Chinese workers, while others were distressed that a Chinese state-owned company would run the project. Vietnam was a tributary state of China for 1,000 years and was invaded by China in 1979, and the two countries continue to joust for sovereignty in the South China Sea [The New York Times].
Several prominent Vietnamese Internet activists have already been thrown into jail for voicing their dissent. McAfee added that the current cyber attack underscores that not every attack is motivated by data theft or money, saying: “This is likely the latest example of hacktivism and politically motivated cyberattacks, which are on the rise” [The New York Times].
Related Content:
80beats: Google Defies China’s Censorship Rules; China Quickly Strikes Back
80beats: Iran Blocks Gmail; Will Offer Surveillance-Friendly National Email Instead
80beats: Hillary Clinton to China: Internet Censorship Is an “Information Curtain”
80beats: Google to China: No More Internet Censorship, or We Leave
Image: iStockphoto
Bill McKibben in Times Square, during the International Day of Climate Action last October, 2009.
If you are interested in climate change and the environment, the entire April issue of Scientific American is great. The theme of most of the issue is managing Earth’s Future. Get a copy of it, because only a little bit of it is online. There are some gorgeous paintings in it too, called the 8 Wonders of the Solar System. There are several articles on global warming and planetary boundaries. From Boundaries for a Healthy Planet, “Scientists have set thresholds for key environmental processes that, if crossed, could threaten Earth’s habitability. Ominously, three have already been exceeded.” Key points of the article are:
1) Although climate change gets ample attention, species loss and nitrogen pollution exceed safe limits by greater degrees. Other environmental processes are also headed toward dangerous levels.
2) Promptly switching to low-carbon energy sources, curtailing land clearing and revolutionizing agricultural practices are crucial to making human life on Earth more sustainable.
As the article states, human growth has expanded to the point where we have literally changed the planet. Pollution used to be a local problem; now it’s global. Resources drying up locally affect everyone, everywhere. And population growth unchecked is a real problem. (Watch out in discussing population to certain conservatives, by the way. Glenn Beck and other right-wingers think Al Gore is in favor of Eugenics and forced sterilization.) But there’s no doubt that simple family planning could help slow down climate change.
“The sudden acceleration of population growth, resource consumption and environmental damage has changed the planet. We now live in a “full” world, with limited resources and a capacity to absorb waste. The rules for living on such a world are different, too. Most fundamentally, we must take steps to ensure that we function within the “safe operating space” of our environmental systems. If we do not revise our ways, we will cause catastrophic changes that could have disastrous consequences for humankind.”
The article is written by a scientist from the University of Minnesota who stars in a video in a post below, Jonathan Foley.
One of my favorite pieces is a book excerpt from Bill McKibben, activist, author and founder of 350.org. I like the new spelling to signify that we have a different earth we are living on– “Eaarth“. Here is an excerpt from their interview with him about his new book:
In his new book, Eaarth: Making a Life on a Tough New Planet, McKibben argues that humankind, because of its actions, now lives on a fundamentally different world, which he calls “Eaarth.” This celestial body can no longer support the economic growth model that has driven society for 200 years. To avoid our own collapse, we must instead seek to maintain wealth and resources, in large part by shifting to more durable, localized economies.
“SciAM: You [...]
At age 90, James Lovelock is a bit misguided. He's a quirky character and has had some good ideas in the past, but I hope he retires from the limelight soon and stops giving Drudge fodder for links by saying ridiculous things like trying to save the planet is 'a lot of nonsense.' But then again, this doomsday stuff always gets loads of press. The truth is that the world's not ending, it's changing. And we can still save the planet James--we just have to stop being so damn cheap and lazy about it.
How Safe is Geothermal Energy?
The world may be trying to go green, but some places don't have to try very hard to create a small carbon footprint. Klamath Falls is one of them. The small Oregon city has been using geothermal energy to heat homes, businesses, and sidewalks since the early 199
We have 2500 KW Slip ring Induction Motor 995 RPM attached to a Gear unit Output of the Gear unit gives 928 RPM. Gear Unit Drives a Fan (Raw Mill Fan in Cement Plant).
Motor Normally runs at 2250 KW. (Output torque of Motor is about 21615 N.m)
How to Determine the torque of the Load (
Dimension of a normal evaporator used in air conditioner.
From Wired Top Stories:
For most blind computer users, surfing the internet or catching up on e-mail means reading just one line at a time, because commercially available braille displays can't show full pages of text. Researchers from North Carolina State University now say the
From Wired Top Stories:
Which are smarter, humans or machines? Back in 1997, IBM's Deep Blue supercomputer struck a blow for bots when it beat Garry Kasparov at chess. Deep Blue won because computers can perform endless lightning-fast calculations; humans can't. It basically pre
From Neatorama:
A simple but elegant solution to a common household problem: you have raw bacon, but you have no frying pan with which to cook it. You do, however, have a machine gun. All you have to do is wrap the bacon in tin foil, tie it around the barrel of your Rheinmetall M
From Discover Magazine | rsslist:
The stunning pictures of Saturn, the deep field, the Eagle, Crab, and Butterfly nebulae -- in its 20 years of operation, the Hubble Space Telescope has taken what are now some of the most famous images in astronomy. But you've seen those over and o
On Facebook, the Farmville updates are impossible to avoid–someone is looking for a cow, someone else is watering their crops. People who have never played the game may not understand how addictive it is, but here’s some proof. The game can not only suck away large portions of your day, it can also, as one councilmember in Bulgaria’s second largest city found out, get you demoted.
While many distracted politicians twiddle their thumbs during meetings or frantically jab at their Blackberries, city councilors in Plovdiv were apparently playing Farmville during budgetary debates.
The Escapist writes:
Council Chair Ilko Iliev “strongly scolded the eager internet farmers,” who nonetheless continued to spend time on their farms while attending council meetings.
Finally, during a meeting last Thursday, in order to send a message to the rest of the Farmville-playing community, one councilmember was given the boot. Councilor Dimitar Kerin was voted off the budget committee, said fellow councilor Todot Hristov, because “he needed more time for his virtual farm.”
The Escapist added:
But he’s not leaving without a fight. “The troubled councilor has defended himself by saying he was not the only one in the City Hall watering virtual egg plants,” according to a report by Novinte.com. “He said he had reached only Level 40, whereas Daniela Zhelyazkova, a councilor from the rightist Democrats for Strong Bulgaria party, was already at Level 46.”
Related Content:
Discoblog: Are Happy Facebook Pics Proof That You Aren’t Depressed?
Discoblog: Desperate For Facebook Friends? Buy Some!
Discoblog: Computer Program Can “Out” Gay Facebook Users
DISCOVER: Your Digital Privacy? It May Already Be an Illusion
Image: Farmville
From Discover Magazine | rsslist:
Every time a space shuttle or the International Space Station has a near miss with a piece of space junk, we're reminded just how much of the stuff litters the area around our planet—millions of total pieces amounting to more than 5,500 tons.
Engineers are under pressure to create sustainable designs. Do you understand environmental impact analysis technology? Do you know environmental compliance requirements on a global basis? And are you aware of the potential economic trade-offs? Using this product analytics software, engineers can sc
ERP, EAM, MES, CMMS, energy monitoring, valve monitoring… the list of application specific industrial software designed to increase productivity goes on and on. Do you use application specific industrial software (beyond Microsoft Office programs) on a regular basis? Do they live up to expecta
The wave of high-profile seismic activity so far in 2010 has been another reminder that we humans could use all the help we can get in predicting earthquakes. This week in the Journal of Zoology, biologist Rachel Grant suggests a new way: Watch the toads.
Taking cues from the animal kingdom is not itself a new idea (not by a long shot): Reports of animal earthquake prediction are legion and they date back to at least 373 BCE, when historians record that animals including rats, snakes and weasels flocked out of Helice just days before a quake devastated the Greek city. More recently there have been reports of catfish moving violently, bees leaving their hive in a panic, and fish, rodents, wolves and snakes exhibiting strange behaviour before earthquakes [Nature]. While these anecdotes grab the imagination, the scatter-shot nature of earthquakes previously prevented anyone from documenting such animal behavior before, during, and after a quake.
But Grant did, and by sheer luck. Her team was studying common toads in Italy in April 2009 when the amphibians began to disappear from the study site. This didn’t make much sense to her, the toads abandoning a breeding site in the midst of breeding season. So the researchers tracked them. They found that 96 percent of males — who vastly outnumber females at breeding spots — abandoned the site, 46 miles (74 kilometers) from the quake’s epicenter, five days before it struck on April 6, 2009. The number of toads at the site fell to zero three days before the quake [Washington Post]. Grant says her initial reaction to the mass toad dispersal was annoyance—their flight was holding up her research. However, when they began to return the day after the earthquake, things began to make more sense.
Even in this study, where scientists happened to be in the right place at the right time to catalog this long-rumored animal activity, one can’t know for sure that seismic activity is the direct cause of the toads packing up and taking off. In an evolutionary sense, though, it seems logical: If the toads can pick up environmental clues that a quake is imminent they could flee to higher ground, someplace safer from rock falls and other hazards. Says Grant, “Our findings suggest that toads are able to detect pre-seismic cues such as the release of gases and charged particles, and use these as a form of earthquake early warning system” [BBC News].
Related Content:
Discoblog: Chile Quake Shifted Earth’s Axis, Shortened the Length of a Day
80beats: Science Via Twitter: Post-Earthquake Tweets Can Provide Seismic Data
80beats: Where in the World Will the Next Big Earthquake Strike?
80beats: Satellite Images Show the Extent of Haiti’s Devastation
80beats: The Earth *Really* Moved: Chilean Quake Shifted a City 10 Feet to the West
Image: Wikimedia Commons / Gang65
Diesel fuel is a very complex mixture of thousands of individual compounds with carbon numbers between 9 and 23 (number of carbon atoms per hydrocarbon molecule) Most of these compounds are members of the paraffinic, naphthenic or aromatic class of hydrocarbons (HC).
Classes and Properti
Today President Obama and Interior Secretary Salazar will announce plans to end the moratorium on oil exploration. An expanse for lease would become available from Delaware to central Florida and also include parts of the Chukchi Sea and Beaufort Sea north of Alaska. From the NYTimes:
But while Mr. Obama has staked out middle ground on other environmental matters — supporting nuclear power, for example — the sheer breadth of the offshore drilling decision will take some of his supporters aback. And it is no sure thing that it will win support for a climate bill from undecided senators close to the oil industry, like Lisa Murkowski, Republican of Alaska, or Mary L. Landrieu, Democrat of Louisiana. The Senate is expected to take up a climate bill in the next few weeks — the last chance to enact such legislation before midterm election concerns take over. Mr. Obama and his allies in the Senate have already made significant concessions on coal and nuclear power to try to win votes from Republicans and moderate Democrats. The new plan now grants one of the biggest items on the oil industry’s wish list — access to vast areas of the Outer Continental Shelf for drilling.
My ...
