Cops got laptops, ambu-lance drivers got cellphones, and now look, they're all running us over and making us dead. This is a concern right now! So should you be outraged and/or scared? Probably not. More »
How can I get single phase protection from thermal over load relay in which there are
inbuilt single phase protection? What is the % of setting in overload realy with respect to motor running currnt.
Hi all !!! i want to know how many poles in single phase induction motor!! motor like used in piston pump or used in washing machine !! & how magnetic field is rotating in single phase induction motor??? i hope u guys help me !! Regards,
As specumalated in yesterday's Giz Explains, Barnes & Noble is coming out with an iPad version of their ebook app, which will, interestingly, include B&N's bookstore. Really? More »
Has anyone got a manual for a Siemens 6DR1520 process controller. Siemens no longer have any records and I need to download the parameterisation from the old units to parameterise the replacement DR24 units.
On this day in engineering history, Pittsburgh's infamous Flatheads Gang used a battery, dynamite, and 100 yards of wire to commit America's first armored car robbery. Led by Paul Jaworksi (image left), a Polish-American gangster who had escaped from prison to avoid the electric chair, the Fla
DISCOVER hit the airwaves yesterday. First, Editor-in-Chief Corey Powell appeared on Fox News to talk NASA and Mars—specifically the agency’s idea for “Tumbleweeds,” or inexpensive round explorers that could bound around the surface of the Red Planet, tossed by the wind. Given the uncertain state of NASA funding, Powell says, the future of exploration could look a lot like these intrepid little bots:
Secondly, if you stayed up late enough to catch the end of “The Colbert Report,” you saw Sean Carroll—who writes for the DISCOVER blog Cosmic Variance—talking time, the multiverse, and his new book From Eternity to Here. Besides surviving the cauldron that is talking to Colbert while still hitting some key scientific points, Carroll also accidentally thinks up a great title for an album:
| The Colbert Report | Mon – Thurs 11:30pm / 10:30c | |||
| Sean Carroll | ||||
| http://www.colbertnation.com | ||||
| ||||
Check out Carroll’s cover story for the March issue of DISCOVER, “The Real Rules for Time Travelers.”
Related Content:
Cosmic Variance: Report from Colbert, Carroll’s account of visiting the show
Cosmic Variance: From Eternity to Here Book Club
Obama facing uprising over new NASA strategy, Reuters
"U.S. President Barack Obama is trying to tamp down an uprising in politically vital Florida against a new strategy for NASA that has rankled space veterans and lawmakers and sparked fears of job losses. ... It is making for a potentially explosive environment when Obama travels to the Cape Canaveral area on April 15 to host a space conference with top officials and leaders in the field. "What reception will they get? Not good," said Keith Cowing, editor of nasawatch.com, a website that closely monitors the U.S. space agency. "It's a gutsy move. It's Daniel in the Lion's Den."
I am looking for the value MU with regard to the removal of a trench shield from collapsed soils. The shield is made of steel and is 10-feet wide by 13 feet high. The soil is silty-clay. Is this enough information?
Tyler
The technical way to explain this odd-looking fowl is that it’s “gynandromorphous.” But if you just want to call it “one seriously confused chicken,” that works, too.
For a new study in Nature, Michael Clinton and colleagues investigated a few of these half-male, half-female chickens they obtained from chicken farms. Gynandropmorphs show up now and then not just in chickens, but also in parrots, pigeons, and some other kinds of animals. But scientists weren’t sure how the mix-up happens, since the standard idea for sex differentiation is that the sex hormones released by the gonads either masculinize or feminize the embryo. Clinton’s team discovered that bird cells don’t need to be programmed by hormones. Instead they are inherently male or female, and remain so even if they end up mixed together in the same chicken [BBC News].
The researchers had first assumed that the half-and-half chickens followed the hormone pattern, and that they were females with some sort of chromosomal problem on the male side (the lighter half of the bird in the image, which also sports a large wattle, sturdy breast musculature, and a leg spur on its male side). Instead, they found the chickens to be almost perfectly split between male and female. The hen half was, for the most part, made up of normal female cells with female chromosomes, whereas the cockerel side contained mostly normal male cells with male chromosomes [Nature News].
Since both sides experienced the same hormone exposure, that couldn’t explain what was happening. In addition, once the team believed that cell identity was at work here, and not hormones, further experiments seemed to confirm this idea. When the researchers transplanted tissues from genetically female embryos into what would become the gonads of genetically male ones and vice versa, the transplanted cells didn’t start expressing opposite-sex characteristics [Science News].
Clinton’s study is buttressed by others that suggest the standard explanation for sex determination doesn’t apply as widely as previously thought, or at least needs some tweaking. Besides the other birds mentioned previously, some marsupials and invertebrates stray from the pattern. “These funky chickens, oddities of nature that they are, will provide new perspectives on questions of sexual identity long thought to have been resolved,” wrote Duke University cell biologists Lindsey Barske and Blanche Capel in a Nature commentary accompanying the findings [Wired.com].
Become a fan of DISCOVER on Facebook.
Related Content:
80beats: Rumors of Y Death Are Greatly Exaggerated; Male Chromosome Evolving Like Crazy
80beats: How All-Female Lizards Keep Their Genes Fresh Without Sex
80beats: Finch Mothers Can Subconsciously Control the Gender of Their Little Ones
Discoblog: Sex Hormones in the Brain: Wimps Rejoice
Image: The Roslin Institute at the University of Edinburgh
Hi all,
Please can some one send me a template for developing pipeline detailed engineering scope of work. The concept and FEED is completed.
Pleaaaaase save my neck asap.
Much thanks
The following recent comments on the “Pharyngula” blog have been brought to my attention via multple emails from readers–some of them victims of rape and sexual abuse:
Fuck them [my co-blogger, our commenters, and I] all sideways with a rusty fucking knife.
The commenters are basically wetting themselves hoping Kirshenbaum comes down hard because people are saying she should be raped with a rusty knife, and Myers “likes it that way”.
I am a big proponent of free speech, however, this thread crosses the line by advocating sexual and physical violence. I have become accustomed to ignoring much of the ridicule I receive online, but keeping silent on this particular issue, is, in my mind, acceptance. Those who contacted me do not have a platform to publicly express their disgust, but I can. Rape is not a joke or game and the fact that these remarks were not removed perpetuates the notion that they’re okay.
Adam Bly and I shared a panel in 2008 at the AAAS Forum on Science and Technology Policy where he discussed the values of Seed Media Group. Further, as a former Seed blogger with many friends still on the network, I’m quite familiar with their stated mission:
Seed Media Group is committed to strengthening public interest in science and improving public understanding of science around the world.
I cannot see how the tone of commentary contributes to this goal. However, given the volume of emails I’ve already received, I’m certain it reflects poorly on Seed, science blogging, and science broadly.
Having recently joined the DOD workforce and enjoying terrific job security for the first time in many years, I'm penciling-in the rest of my career. Though much of my 25-year Computer Science career has been spent as a blue-collar developer, I like the up-front part of the process better than the b
The Cassini spacecraft recently passed very near the tiny moon Helene and returned amazing pictures of it.
Helene is a dinky iceball, only about 36×32x30 km (22×19x18 miles) in size (this picture has an incredible resolution of about 113 meters (123 yards) per pixel). It circles Saturn in the same orbit as the much larger Dione, and is in fact in the larger moon’s leading Trojan point: a peculiar artifact of gravity when an object orbits another. It’s a gravitational stable point, like a valley between two mountains.
Clearly battered, Helene has an oddly smooth appearance, which may be due to the feeble gravity of the moon collecting dust also trapped in the Trojan point. At The Planetary Society Blog, Emily has more info on Helene and speculates about its appearance. She also has a good description of how the Trojan points work.
Credit: NASA/JPL/Space Science Institute
I am interested in submitting an RFQ, but I can not find a place to do that or a place to contact a sales person.
This should be an easy task to perform on your website.
Please have someone contact me for an RFQ for bearings (Mfr. timken/MPB)
After 40 years away from the nuclear reactor field, I'm trying to get up-to-speed so I can properly reply to a condensation of Alisa Gravitz's article "Ten Strikes Against Nuclear Power" which was in a local newspaper. The things I have been reading use lots of acronyms. What does "LFTR" stand for
please tell me, what is the relation between internal energy an pressure energy of a fluid?both are same or not?if so how?
What is the highest temperature at which there are no residue or by-products remaining? In other words, can you burned any material and have absolutely nothing left?
We have a Nayadic unit in our septic system. Recently the motor failed and was replaced. As part of that replacement the dealer removed the GFCI from the power circuit. I was told that they were removing the GFCIs from all the Nayadic units as they GFCIs kept failing.
This sounds somewha
 eFitnessNow | Donating kidney no handicap to healthy, long life: Study Times of India According to the study published in the March 10 issue of the `Journal of the American Medical Association', over a 15 year period, both donors and ... Long-Term Health Risks Low for Kidney DonorsWebMD Researchers confirm safety of kidney donationsLos Angeles Times Kidney donors do not seem to face much risk from kidney donationHealthJockey.com Reuters -7Online.com -The Money Times all 121 news articles » |
