WEB BASED CONTROLLING AND MONITORING OF Siemens's PLC i want to control and monitor a process , that process will be control s7-300 siemen's PLC. can any body guide me about how i m remotely access the Process. Is LabVIEW good for that or Wincc????
Monthly Archives: February 2010
The Sound of Speed
Bob Thompson’s The Sound of Speed (check out the audio samples!)
Via Boing Boing: “an album entirely based on the noises of modern transportation.”
“This “concept” LP rhapsodizes the technology of human transport, from Vespa scooters to Le Mans racers, from tricycles to rocket ships. Each of the dozen vehicular vignettes is book-ended by authentic sound effects, with vivid stereo motion. The music was composed and arranged by Thompson, and the album was recorded in Italy by the Orchestra dei Concerti de Roma, conducted by Paul Baron.”
What Killed King Tut? Incest and Malaria, Study Says | 80beats
Once again, to the bane of myth-makers and fans of historical intrigue, the simplest explanation may be the best: Scientists analyzing the DNA of the world-famous mummy of Tutankhamen say that he wasn’t done in by murder nor any of the exotic diseases put forth as explanations for his death at the age of 19. Rather, they say in the Journal of the American Medical Association, it was likely complications of malaria that killed King Tut, who was already frail thanks to royal inbreeding.
The team led by Egypt’s top archaeologist, Zahi Hawass, spent years taking CT scans and conducting genetic tests on mummies from the royal tombs. They say they confirmed that Tut was the son of Akhenaten, which is what scholars have long believed, but it hints at something else: It also identifies some of his grandparents and great-grandparents for the first time and suggests that his mother was Akhenaten’s sister [The Times]. A brother-sister pair wasn’t unusual during this period in ancient Egypt, medical historian Howard Markel says. Pharaohs were thought of as deities, so it makes sense that the only prospective mates who’d pass muster would be other deities [AP].
Unfortunately for King Tut, that incestuous tradition made him more susceptible to degenerative bone diseases. He may have had Koehler’s disease, as well as a club foot. Earlier discoveries had hinted at Tutankhamen’s frailty, including the 100-plus walking sticks that Howard Carter found when he unearthed the tomb in 1922. “This is confirmed by images that show him sitting while shooting an arrow, which normally would have been done standing up,” says Hawass. “He cannot stand” [TIME].
The researchers also found that Tut and his family were infected by a parasite that often brought with it a virulent form of malaria. If the young Tut was already frail and had a weakened immune system, a malarial infection could have been life-threatening, the team hypothesizes. Not everyone buys the parasite bit, however, including parasite scientist Sanjeev Krishna. “If you have the parasite and you get to the age of 19, the chances are you’ve developed some kind of immunity,” he said [The Times].
But while a sickly minor king who could barely walk isn’t exactly as romantic as the King Tut of popular culture, James Phillips of Chicago’s Field Museum of Natural History says we shouldn’t expect the emerging facts to crush the myth. “Reality is reality, but it’s not going to change his place in the folk heroism of popular culture,” Phillips said. “The way he was found, what was found in his grave — even though he was a minor king, it has excited the imagination of people since 1922″ [AP].
Related Content:
DISCOVER: 5 Questions for the Mummy Doctor
80beats: Egypt Finds Tombs of Pyramid Builders, And More Evidence They Were Free Men
80beats: X-Rayed Mummies Reveal That Ancient Egyptians Had Heart Disease
Cosmic Variance: Tut-Tutting at Tut Tat
Image: flickr / Steve Evans
Each Shot of Mezcal Contains a Little Bit of DNA From the “Worm” | Discoblog
The next time, you’re taking shots straight out of a bottle of mezcal, the potent Mexican alcohol made from the agave or a maguey plant, remember what you’re drinking. Swirling in your mouth is not just the strong smoky alcohol guaranteed to knock you out, but also caterpillar DNA from the “worm” that is often found at the bottom of the bottle.
The worm is actually the larval form of the moth Hypopta agavis that lives on the agave plant and really has no business being in the bottle except to serve as a marketing gimmick. Still, many a drinker has set out to prove his iron will and iron stomach by swallowing the booze-soaked insect at the bottom. Turns out there’s no need for such dramatic gestures. Researchers have found that DNA from the caterpillar can be extracted from the alcohol it’s preserved in.
Ars technica reports on the scientists findings:
“We hypothesized that DNA from a preserved specimen can leak into its preservative medium, allowing the medium itself to be directly PCR amplified” the authors write. “We successfully tested this idea on mezcal—the alcoholic beverage famous for the ‘worm’ (a caterpillar) that is placed in the bottle of many brands—and indeed obtained amplifiable quantities of caterpillar DNA.”
This is great news for researchers trying to extract DNA samples from old specimens preserved in alcohol. Now, they don’t have to take pieces from a crumbling specimen and risk destroying it in the bargain, but can instead use the preservative liquid to obtain and sequence DNA. The scientists, however, warned that different specimens should not be placed in the same jar, as residual DNA would all swirl together.
So no mixing worms, snakes, and scorpions.
Related Content:
Discoblog: Caterpillars Beware: Parasitic Wasps Come in a Wide Variety
NCBI ROFL: NCBI ROFL: Lost in the sauce: the effects of alcohol on mind wandering
Image: Wikimedia
Headed to San Diego for AAAS 2010 | The Intersection
Around this time last year, an unexpected trip to the hospital led to an anesthesia mistake giving me aspiration pneumonia. Although I recognized how serious the situation was, I was also very sad to miss my favorite annual science event: The 2009 AAAS meeting in Chicago–including The Science of Kissing symposium I had helped organize for Valentine’s Day.
As you can imagine, one year later I’m extremely grateful to be healthy, fully recovered, and on my way to attend the 2010 meeting with David. And I’m also delighted to be joining the AAAS program committee. Most of all, I’m looking forward to catching up with friends in science, journalism, policy–and especially, a few former Sea Grant Fellows. And CM too of course.
Blogging may be light during the conference, but expect some upcoming posts on what’s happening in San Diego…
Godwin godwinned. FTW. | Bad Astronomy
This is beyond brilliant. It is head-asplodey meta-hyper geekariffic.
If you aren’t familiar with the Hitler parody videos you can catch up here, but you really have to watch a few before seeing this, the transformative end-of-the-meme bringer. Anyone making a Downfall parody after this is basically an SEO professional getting a Twitter account now.
Ausgezeichnet.
Washing Machine Solenoid Question
from the U.K.
Washing machine hot fill.
My wife has just brought a new clothes washing machine. But it only has a cold water fill and the solenoid's are all connected together on this cold water supply.( There are 3 solenoid's to the one fill point). My first thought was to fit a
Hardness of P91 Material
can you please tell me the hardeness of the p91 material and alsothe main chemical as well as the physical properties of the above mentined material
Up, up, and a (no) way! | Bad Astronomy
[Update: The comments for this post have been... interesting. Opinions are all over the place on this. I know the Humor tag is small and easy to overlook, but I pretty much figured the tone of this post made it clear I was just being silly. Either I missed the mark, or I have a lot of commenters who did. Given that choice, I'll just assume I'm funny. Actually, rereading it, the skydiver I mentioned threw off the vibe of the post, so I removed it. Hopefully that'll bring the tone more to where I wanted it to be, and I certainly hope no one was offended.
Anyway, to be clear, I was kidding. This sounds like a fun sport, and it would be awesome to watch. However, I stand by the whole I'd-never-do-it-in-a-million-years thing. It takes a special kind of crazy to load a rocket motor onto the back of a plane. I'm happy it's being done, and a lot happier people other than me are doing it!]
I just received a very odd press release: the Tulsa Air and Space Museum is partnering with something called the Rocket Racing League to create — get this — a rocket racing show. Like an air show, but with rocket-powered vehicles. They have a poster and everything:
Now, as soon as I read this press release I had three thoughts barrel through my brain, willy-nilly, right on top of each other. They were, in order:
1) This must be a hoax.
2) No, I think this is real, and we live in THE FUTURE.
3) This is a really bad idea.
I’ve been to a few air shows. They make me nervous, not the least reason for which is all the footage you ever see of air shows on TV is when two planes slam into each other or the ground or the spectators or some other obstacle like a goose, the main feature of all these being the slamming.
So, doing this with a rocket motor strapped to your backside just strikes me as being, well, a terrible, terrible idea. Apparently they have some sort of course the rocketeers must go through — ostensibly without the circa 1991 Jennifer Connelly waiting for them when they land* — and the audience at the show can follow along on giant TV screens using some sort of augmented reality system. People watching on TV can, according to the press release, "have the unique sensation of riding right alongside famed Rocket Racing League pilots."
Yeah, not so much for me. I think I’ll watch Spongebob reruns. Much safer. And that way I can just wait for the highlights on "America’s Funniest Rockets Slamming into Things Way Faster Than a Plane Can".
* Yes, I am assuming all the rocketeers are men (well, heterosexual men if you want to be really specific). It’s not sexist; it’s because all the women I know are far too smart to strap a rocket to their backside in this manner.
I love my readers, even Renata M!
Dr. "Sherpa" - I am confused.
"Are you FOR personalized medicine or not?"
"Nor should dated links that no longer apply to the fast evolving and current business/economic climate, technologies and law(s) in differing American States and the international sector be fused - adding to the confusion for neophytes...like me...who, though we are not of your august standing...deserve better from you.
"Is it your belief that ANY executive or Board Member who has a former affiliation is actually acting in the capacity of all former posts/affiliations/occupations"
"Are only physicians capable of avoiding conflicts of interests when they choose to participate in the business sector???"
No, no one is all that capable these days of avoiding conflicts of interests. That is why we declare them on CMEs we give, or in academic positions. It is this transparency that is needed. Do I own a DTC company? No. Do I make money from DTC testing? No. Would I make money off Genetic testing done in my office? No, not off the test.
"For those of us who are not physicians, bankers or biotech experts/lawyers...though your posts are always entertaining and provocative fun...confusing."
Lessons From a Cancelled Trip
My husband and I made the decision this past October to cancel a trip to Spain and Morocco that I’d spent innumerable hours planning. It was a complicated trip – several legs, transportation utilizing planes, trains and automobiles; 12 days in foreign countries. Since it’s been a brutal winter for many of us and thoughts of summer travel are rampant daydreams, I thought I’d finally sit down and share a few hard-earned tips for you to remember when planning your next trip abroad.
Beware #1:
LIFE THROWS CURVE BALLS
Don’t fall into the trap of thinking there is no way, no how, come hell or high water that the trip you’re planning could be canceled.
Don’t fall into the trap of thinking there is no way, no how, come hell or high water that the trip you’re planning could be canceled. This trip was to be a once-in-a-lifetime trip for us. One we’d given a lot of thought to, planned in our minds for a couple of years, and even committed the resources for. Travel insurance may cover some things, but it doesn’t cover prudence. By the time the trip came within a month of departure, our job situation had become unexpectedly dicey. Our decision to cancel was one of prudence. We knew we’d lose some money, but we couldn’t lose money we hadn’t yet spent. It’s not always illness or injury or some family crisis that creates a need to cancel.
If you go into the planning of a trip with this in mind, you won’t be unpleasantly surprised when you pull the plug.
Beware #2:
CURRENCY CHANGE-UPS
For this trip, all of the lodging accommodations took the initial charges/downpayments in Euros. The exchange is easy enough to calculate. BUT on the refund end several credited our credit card in British Pound Sterling. In most cases, what I received back when I finally got the transactions converted back to Euros then U.S. dollars was not what it would have been had they refunded the money in the original currency taken – Euros (exchange rates fluctuate daily). Not only that, as if that’s not enough, but it’s extremely confusing when you begin converting the multiple currencies. Make sure you ASK, if a cancellation becomes necessary, in what currency they’ll make the refund. You can’t change the policy, but you’ll at least be informed.
I suggest you use a full size notebook page for every leg of the trip. Organize it any way you want, but make room for this: as you book, find out exactly by what time frame you have to cancel, and should that be necessary, exactly how much you’ll receive back assuming you cancel within that time frame. Not a percentage, not a night’s worth, but the number of dollars/euros/pounds etc. If it’s not to be money, rather vouchers, get all the details of their restrictions for use. Note all this prominently on your planning page, the date, and the person’s name that gave you that information.
Beware #3:
CASH vs. VOUCHERS
I booked several legs of the trip through Mr. and Mrs. Smith. Happy with their customer service and responsiveness, the cancellation process irrevocably damaged my opinion of them. I hesitate to say I won’t use them again. I will say instead that I’ll attempt to avoid them in the future, or for that matter, any other booking agent that attempts the same. Here’s why. I was generally aware of the cancellation policy. In other words, I understood that should I have to cancel my refund would be in vouchers that could only be used towards another Smith property and had to be used within a year. Okay. But here’s what I didn’t know. In order to use the vouchers I received upon the cancellation, a FULL prepayment (as in 100%) of the price would have to be made for the NEW trip. So for instance, come June we decide to use the vouchers for a stay at a Smith property in the U.S. I’m within the year restriction, but guess what? Instead of the requisite down payment to hold my reservation, in order to use my voucher, I have to give them the entirety of the cost of the stay. No dice. Not only will I NOT use the vouchers, but I have to cry foul on this. ALL the lessons I learned were due to my own lack of savvy. This however, is a bad business practice, aka “RIP-OFF”.
Beware #4:
DON’T CALL THEM
Don’t ever call THEM. If they’re not offering to call you to iron out any snafus, they don’t deserve your business.
Don’t ever call THEM. If they’re not offering to call you to iron out any snafus, they don’t deserve your business. My credit card wouldn’t clear with our lodging company in Morocco. I felt guilty about that, as if it was my fault or the thought crossed my mind that maybe they thought I was attempting something I couldn’t afford. Add to that the need to get the particulars nailed down, and you’ve got me picking up the phone and making an international call when they asked me to. It’s embarrassing to admit that. I was very upset at my stupidity when I received the phone bill. And incensed that they asked me to call in the first place. There was nothing wrong with my credit card, they just had problems processing a U.S. card and they admitted mine wasn’t the first.
Beware #5:
INTERNATIONAL WIRE TRANSFERS
No credit card surcharges, no currency exchange issues, a way to put down a reservation hold and know exactly what the financial impact will be. Think again!
A small B&B in Andalusia required a deposit in the amount of $100 Euros and could only accept a wire transfer (with the balance in cash upon our arrival). I had our banker figure the exchange and wire the amount. She even agreed to waive their normal international wire transfer fee of $30 (nice!). We received a confirmation that USD of $149.24 had been debited from our account and $100 Euro sent to the B&B’s bank.
Things came unwound from there. An email comes from the proprietor of the B&B that a deposit of $85 Euro had been received. I emailed her back reminding her she’d requested $100 Euro and that I had in hand confirmation $100 Euro had been wired directly to her bank account. I even got our banker into the fray, but nothing could be done. The proprietor’s bank had charged her an incoming wire fee and she had to pass that on to us, because, well, that’s the way business was done in Spain and she felt terrible that she hadn’t told me that upfront, she assumed I knew, and on and on. She blamed the misunderstanding on her bank in the end. Numerous emails were exchanged. But in the end, we only received credit for the $85 Euro. I was helpless to combat this situation.
When I calculated what the fees were for the wire transfer of $149 USD, the total was $51 ($30 potential fee from our bank and $21 fee from the receiving bank – $15 Euro converted). That’s just a small fee of 34% of the amount wired!! Avoid international wire transfers unless you get all the particulars and fees assessed in writing ahead of time.
Beware #6:
FOREIGN CAR RENTAL
Plan to spend triple the amount you would allocate for a similar amount of time stateside. The collision damage waivers are extremely pricey. But we felt we needed the best level of coverage offered. Even if that could have been reduced with a lower level of coverage, it was difficult deciphering what was covered and what wasn’t.
Since we were to be in the South of Spain for several days, we wanted to rent a car. With plans to take the AVE from Madrid to Cordoba, we wanted to pick up the car at the Cordoba train station. Even with the help of a travel agent, the first attempt at this would have required we load our luggage into a taxi for a short ride to the rental car pick-up. Not so bad on the trip in, but on the trip leaving, that element of unknown time threw up road blocks where scheduling was concerned. Even though the car rental agency showed up as being at the Cordoba train station, when we looked closely at the address, it was off-site. At the time we cancelled the trip, a rental car had still not been locked down.
Forget the fine print. Ask more questions. As in a LOT of questions. Stupid questions. Get names and emails confirming what you were told if you can. If someone wants your business, they shouldn’t mind. And prepare for this: no matter how many questions you ask, how many t’s you cross and i’s dotted, there will be a few unpleasant surprises if you have to cancel.
On a bright note, I loved TripIt (http://www.tripit.com) for organizing the trip. In one glance it allows you to see the itinerary for every day, addresses, phone numbers, flight or rail numbers, costs, confirmation numbers, level of accommodation you booked, etc. I can’t think of a detail it won’t handle.
Book Excerpt: The Convict Christ
Jens Soering on Jesus as a condemned criminal executed alongside two thieves.
Sonar High Frequency Piezoelectric Device
Hi every one!
I just suscribe to this forum because I have some questions about a project I have to do with my school. I have to think about and make a SONAR high frequency [20kHz - 150 kHz], with a bandwith [10 - 20kHz]. Well I'm a little lost, first of all i have to think about the equi
The Early Course of Autism
Understanding the natural history of a disease is an important framework to have. It not only is critical for prognosis, but also informs us about diagnostic and screening strategies, is important to assessing interventions, and provides clues to causation.
There has been much debate about the early course of autism, specifically the earliest age at which autism may be detected. At present scientific evidence suggests that autism is dominantly genetic, and so researchers expect that there may be early signs of autism even in infancy. Traditionally, however, autism is not diagnosed until age 2-3, when parents bring their children to medical attention, or when signs are detected on routine well-child visits or in day-care.
Retrospective studies, largely involving review of home movies, have suggested that autism can be diagnosed as early as 6-12 months, suggesting that parental report is not an adequate screen because subtle signs are hard to detect without rigorous observation.
Now a group has published the first prospective study to address this question. They followed 25 children who were later diagnosed with autism spectrum disorder (ASD) (22 of which were high risk) and 25 low risk children who were later determined to have typical development (TD). They found:
These results suggest that behavioral signs of autism are not present at birth, as once suggested by Kanner, but emerge over time through a process of diminishment of key social communication behaviors. More children may present with a regressive course than previously thought, but parent report methods do not capture this phenomenon well. Implications for onset classification systems and clinical screening are also discussed.
More precisely, they carefully assessed the children, counting instances of eye contact and smiling, for example, and found that there were no statistically significant differences between the groups at 6 months, but that almost all measures were reduced in the ASD group by 12 months.
The study is rigorously designed, and its primary weakness is that it is a bit small. The authors also acknowledge that future studies should utilize longer periods of recorded observation. I would add that more frequent assessments between 6 and 12 months would help specify when the earliest divergence takes place. Replication of the study is therefore desirable.
But what these results indicate is that clear signs of autism emerge between 6 and 12 months of age. Further, social skills tend to be regressive in ASD between 6 and 18 months of age. It was previously thought that social regression was less common in ASD, but this study suggests it is the rule, not the exception. Meanwhile, language skills did not regress in this study, they continued to improve in the ASD group, just on a slower curve than the TD group.
Further the study documented that the parents generally did not recognize the social regression between 6 and 18 months. The authors refer to the well-known phenomenon of telescoping in which patients or family members will recall the onset of symptoms as being much more recent than they actually were.
Prior studies using home movies have shown that signs of autism can be detected between 8-12 months. A study looking at head circumference found statistical differences prior to 12 months. And one study looking at movements found differences between 4-6 months. So it seems the consensus of current evidence is that objective and detectable signs of autism emerge between 6-12 months. This study does not support detection prior to 6 months, but other studies do suggest this might be possible.
This study has implications for diagnostic categories of autism (specifically distinguishing regressive forms of autism from non-regressive forms, since most of the ASD children in this study showed social regression). It also is very informative regarding screening strategies. It suggests no utility to screening children prior to 6 months of age. Further, since ASD children continued to separate from TD children through 3 years of age, screening for ASD should not stop at 2 but continue to at least 3.
The authors, however, do not discuss one very significant implication of this study (although an implication already raised by prior studies demonstrating early signs of ASD) – the observation made by many parents that ASD symptom onset correlates with certain vaccinations. Many children are diagnosed between the age of 2 and 3, during the height of the childhood vaccine schedule. This lends itself to the assumption of correlation and causation on the part of some parents. The phenomenon of telescoping, whereby memories of time contract, will tend to reinforce this false correlation.
What this and other studies show is that not only is the assumption of causation fallacious, the observation of correlation is likely flawed as well. The true onset of autism in most ASD children likely began a year or two prior to the vaccines that are blamed as the cause.
This point was made most dramatically by the Cedillo case – one of the test cases brought before the Autism Omnibus court alleging vaccine injury causing autism. Cedillo’s parents alleged that their child developed autism as a result of a combination of the MMR vaccine and thimerosal from other vaccines. In courtroom testimony, however, experts were able to show with home movies that Cedillo showed clear signs of autism as an infant, prior to ever receiving the MMR vaccine.
The current study adds nicely to the growing consensus that the true clinical onset of ASD is between 6 and 12 months of age. Whether or not there are biological markers of ASD prior to that remains to be seen, but is not unlikely. Early and fairly uniform onset is consistent with genetic causes of ASD, rather than environmental causes.
Insights from the Paul Offit Interview, Part III: The Resurgence of Diseases | The Intersection
(If you haven’t yet heard the first episode of the new Point of Inquiry, you can listen here, and I also strongly encourage you to subscribe via iTunes from the same page.)
Perhaps the most alarming part of my conversation with Paul Offit came when he argued we’re already seeing many scary diseases return, thanks to reduced vaccination rates in certain communities around the U.S. I wasn’t sure whether there was clear evidence of this yet (save the obvious case of the measles in the UK). But Offit certainly sounded sure. I asked him the following question, “The public health fear is that diseases that were once vanquished or rare will return. How much evidence is there that that’s happening?” Here is his reply around minute 25:30:
Abundant evidence. I would have said ten years ago it was theoretical. And certainly, if we had immunization rates that dropped from 98 percent to 95 percent, or 94 percent, you wouldn’t see what we’re seeing now.
And frankly, just to take a step back, if you look at nationwide immunization rates, they’re excellent. And I think our country frankly asks a lot of its citizens when it asks children to receive vaccines against 14 different diseases in the first few years of life, which can mean 26 inoculations in the first few years, and as many as five shots at one time. I think that’s a lot to ask of parents, and for the most part, our immunization rates are excellent.
The problem is, there are certain communities or districts where the immunization rates are quite low: Ashland, Oregon; Vashon Island off Washington State; Southern California; Hasidic Jews in New York state. And so what you’re starting to see now is outbreaks of infectious diseases. Specifically, we had a measles epidemic in 2008 that was bigger than anything we’ve seen in more than a decade. We have outbreaks of pertussis now, or whooping cough, one of which occurred in Delaware in 2006, where the epidemiological pattern was exactly like one would see in the pre-vaccine era, meaning primarily 5 to 9 year olds. And we’ve had cases of bacterial meningitis, one particular type that is perfectly preventable by vaccines, that has caused deaths–one in Minnesota, three in the Philadelphia era.
I used to say that I think that the tide will turn when people start to see children die of these diseases. They’re seeing children die of these diseases. And so now I’ve changed to, “when enough children die.” But I think it is perfectly possible for diseases like polio to come back in the United States. Because it still occurs in the world, and only about 1 of every 200 to 500 people with polio actually becomes paralyzed with it, most people have no symptoms, but still are contagious. So let enough people stop getting vaccinated against polio, and there is every reason to believe it will come back.
Scary, scary stuff.
Again, you can listen to the podcast and subscribe here. And don’t forget to buy Paul Offit’s book Autism’s False Prophets if you don’t already own it…
Driver’s Education, Continued
On Monday, my son started the classroom portion of the state-mandated driver's education program. He views it as a collasal waste of time, especially since it is eating his entire winter break. In his opinion, the state should just administer an appropriate written test on the material and let students choose how much to prepare. If they flunk, they study more until they pass (yes, he is a libertarian).
When my daughter took the course a few years ago, she said her class divided into four groups:
Front few rows: ultra nerdy private school kids who took careful notes on everything the teacher said.
Next couple of rows: nerdy public shools kids who sort of paid attention, but not diligently.
Third set of rows: non-nerdy kids of all flavors who paid little attention and played hangman, or texted each other, or read a book, or whatever.
Last set of rows: stoners who were quite obviously high/asleep for most of the classes.
Bolden and Holdren Fight Back
Keeping the U.S. in the space race, letter, John P. Holdren and Charles Bolden, Washington Post
"Charles Krauthammer was badly off target in his Feb. 12 op-ed, "Closing the new frontier," on the Obama administration's plans for the U.S. space program. As the blue-ribbon Augustine Committee concluded last year, the Bush plan, not the Obama plan, would have left the United States a loser in space. Despite valiant efforts by NASA and its contractors, President George W. Bush's Constellation program would not have been able to send astronauts to the international space station until two years after the station had crashed into the ocean."
RNC Chairman Steele, media saying GOP trying to co-opt Tea Parties, "that’s a croc"
Takes a Swipe at Democrat Rep. Sheila Jackson-Lee
Republican Chairman Michael Steele got a little animated in showing annoyance with recent media portrayals of the GOP trying to absorb the Tea Party movement. Leaders of the Tea Party met with the Chairman in Washington yesterday to air greviences and to discuss possible areas of cooperation, independent of the GOP apparatus. At 3:45 into the Chairman's intro, Steele says:
"The press is scratching their heads, trying to figure out what our agenda is... and what our motives are. [spooky look] Well I have no agenda folks. I'm not here to co-opt anyone. Oh gee, here are the GOP cards. Sign everybody up. Come back if you left, or join us if you've never been here. That's a croc. It ain't happening. That isn't what this is about."
A little later in the video he doesn't mention the individual by name, but clearly takes a jab at Houston-area Congresswoman Sheila Jackson-Lee:
"This is about getting the folks across the street to pay attenion to what is going on in America. That the frustration, the anxiety, the anger comes from the fact, that when I go to a meeting with my congressmen, she's too busy on her cell phone to listen to my story, and to hear my frustration..."
Rep. Jackson-Lee held a town hall last August, and was caught in the middle of the meeting talking for minutes on her cell phone, while a constituent was directly addressing her and asking for help.
Hat tip Jim Hoft at Gateway.
NASA Finds Warmer Ocean Speeding Greenland Glacier Melt
Calving front of Equp Sermia glacier, West Greenland, one of the four glaciers studied by Rignot and his team. Image credit: Michele Koppes, University of British Columbia
› Larger view
Researchers Eric Rignot and Isabella Velicogna, both of NASA's Jet Propulsion Laboratory, Pasadena, Calif., and the University of California, Irvine; along with colleague Michele Koppes of the University of British Columbia, Vancouver, Canada, measured the undersea melting rates of four glaciers in central west Greenland in the summer of 2008. They deployed oceanographic equipment in the glacier fjords, sampling the water at various depths to measure ocean currents, temperature and salinity, along with the depth of the fjords. The researchers found the melt rates of the glaciers studied was 100 times larger under the ocean at their terminus points than that observed at the glacial surfaces.
Rignot said the new study complements other recent research on the effects of ocean conditions in Greenland fjords. A study in the same online issue of Nature Geoscience by researcher Fiammetta Straneo of the Woods Hole Oceanographic Institution, Woods Hole, Mass., and colleagues looked at changes in oceanographic conditions in fjords that may be conducive to changes in undersea melting. Another 2008 Nature Geoscience study by researcher David Holland of New York University, New York, found that Greenland glaciers sped up as warm waters intruded into their fjords.
"Our study fills the gap by actually looking at these submarine melt rates, something that had never been done before in Greenland," Rignot said. "The results indicate rather large values that have vast implications for the evolution of the glaciers if ocean waters within these fjords continue to warm."
In recent years, scientists have observed a widespread acceleration of Greenland's glaciers, associated with thinning of their lower reaches as they reach the sea. In the past decade, surface melting of glaciers around Greenland due to warm air temperatures has increased in both magnitude and area, while snowfall has increased just slightly. The result is a tripling in the amount of ice mass lost in Greenland between 1996 and 2007. Of this loss, between 50 and 60 percent is attributable to a speedup in the flow of outlet glaciers, with the remainder due to increased surface melting.
But the glaciers also melt along their submerged faces, where they come into contact with warm ocean waters. A warmer ocean erodes a glacier's submerged, grounded ice and causes its grounding line -- the point at which a tidewater glacier floats free of its bed -- to retreat. Little is known about these rates of undersea melting and how they may influence the glaciers. The only previous measurements of undersea glacier melting were in Alaska.
The melting of glaciers beneath the ocean surface causes deep, warm, salty water to be drawn up toward the glacier's face, where it mixes turbulently with the glacier's cold, fresh water. The water then rises along the glacier face, melting its ice along the way, then reaches the ocean surface and flows away from the glacier in a plume. An ocean temperature of 3 degrees Celsius (37.4 degrees Fahrenheit) can melt glacial ice at a rate of several meters per day, or hundreds of meters over the course of a summer.
Rignot said the study points to the need to include the ocean factor if scientists are to increase the reliability of models used to predict how Greenland will be affected by climate change.
"All major Greenland glaciers end up in the ocean, and tidewater glaciers control 90 percent of the ice discharged by Greenland into the sea," Rignot said. "Submarine melting may therefore have a large indirect impact on the ice mass budget of the entire Greenland Ice Sheet. If we are to determine the future of the Greenland Ice Sheet more reliably in a changing climate, more complete and detailed studies of the interactions between ice and ocean at the ice sheet's margins are essential."
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Get Set for a Possible Glimpse of an Asteroid
Asteroid Vesta as seen by NASA's Hubble Space Telescope.
The most prominent asteroid in the sky is currently yours for the perusing with b-- and perhaps even the naked eye.
Tomorrow night, Wednesday, Feb. 17, Vesta, the second most massive object in the asteroid belt, reaches what astronomers like to call "opposition." An asteroid (or planet or comet) is said to be "in opposition" when it is opposite to the sun as seen from Earth. In other words, if you were to stand outside with the sun directly above you at high noon, Vesta would be directly below your feet some 211,980,000 kilometers (131,700,000 miles) away. With Vesta at opposition, the asteroid is at its closest point to Earth in its orbit.
Wednesday night, the asteroid is expected to shine at magnitude 6.1. That brightness should make it visible to interested parties brandishing telescopes or binoculars, and even those blessed with excellent vision and little or no light pollution or clouds in their vicinity. Vesta will be visible in the eastern sky in the constellation Leo.
What makes this space rock so prominent these days? Along with its relative proximity at this point, a full half of the asteroid is being bathed by sunlight when seen from Earth, making it appear brighter. Another attribute working in the observer's favor is that Vesta has a unique surface material that is not as dark as most main belt asteroids - allowing more of the sun's rays to reflect off its surface.
If spotting Vesta in the night sky has whetted your appetite for mega-rocks, all we can say is, stay tuned. NASA's Dawn spacecraft, currently motoring its way through the asteroid belt, will begin its exploration of Vesta in the summer of 2011.
For more information about Dawn, visit: http://dawn.jpl.nasa.gov/ .
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