How NASA scientists paid homage to 49ers’ receivers after successful landing of Mars craft

first_imgAnd, as of Monday, out of this world — thanks to some choreographed … The touchdown celebration dates back to 1965, when New York Giants receiver Homer Jones caught an 89-yard touchdown pass on the first play of a game and punctuated the deed by spiking the football in the end zone.That’s according to a 2009 Bleacher Report story, and I think we should stick with it.Since then the TD two-step has become one of the foremost examples of cultural and artistic expression in the world.last_img

Bacterial Flagellum Multitasking and Assembly Described

first_img1Evans et al, “An escort mechanism for cycling of export chaperones during flagellum assembly,” Proceedings of the National Academy of Sciences USA, 10.1073/pnas.0605197103, published online before print November 6, 2006.2David DeRosier, “Dispatch: Bacterial Flagellum: Visualizing the Complete Machine In Situ,” Current Biology, Volume 16, Issue 21, 7 November 2006, Pages R928-R930, doi:10.1016/j.cub.2006.09.053.3Y. Magariyama, S. Sugiyama, K. Muramoto, Y. Maekawa, I. Kawagishi, Y. Imae and S. Kudo, “Very fast flagellar rotation,” Nature 371 (1994), p. 752.Finally we found a source corroborating the claim made in the film that some of these flagella can rotate at 100,000 rpm.  Most sources mention much lower (though still impressive) values of around 18,000 rpm.  DeRosier cites a case in the 102,000 rpm range; we will reproduce this source as footnote 3 above for those interested.3    None of the three sources cited in the entry above mention evolution.  We have to keep saying that.  None of them, either, mentioned the fact that it is the intelligent design community that has brought these molecular machines to the attention of the public as examples of biological structures that defy Darwinian explanations.  They’d rather not touch that subject with a ten-foot propeller.    They should, though.  The more young people watching Unlocking the Mystery of Life, the more might become interested in science.  The more scientists interested in these molecular machines, the more funding might become available.  This is another way ID can stimulate scientific research.  What’s Darwin got to do with it?  Nothing but spin doctoring.(Visited 17 times, 1 visits today)FacebookTwitterPinterestSave分享0 Since the bacterial flagellum has become a de facto icon of the intelligent design movement, it’s instructive to see what new discoveries come to light on the molecular machine par excellence.  Two papers appeared recently.Ferry Boats:  A Cambridge team publishing in PNAS1 studied how the parts get to the assembly site.  The studied one of the many flagellum proteins, FliJ:We reveal that the essential export protein FliJ has a novel chaperone escort function in the pathway, specifically recruiting unladen chaperones for the minor filament-class subunits of the filament cap and hook-filament junction substructures….  The data show that FliJ recruits chaperones and transfers them to subunits, and indicate that this is driven by competition for a common binding site.  This escort mechanism provides a means by which free export chaperones can be cycled after subunit release, establishing a new facet of the secretion process.  As FliJ does not escort the chaperone for the major filament subunit, cycling may offer a mechanism for export selectivity and thus promote assembly of the junction and cap substructures required for initiation of flagellin polymerization.Slogan spin:  “Thanks to the new work of Murphy et al., we now have a view of the bacterial flagellum in situ and quick-frozen in time as if a flash bulb had stopped its action.”  David DeRosier wrote this in Current Biology2 in response to the paper mentioned here on 09/01/2006.  DeRosier included two of the stunning new 3D models of the intricacies of the rotor and stator.  Two other sample images can also be found at Caltech E&S (Volume LXIX, Number 3, 2006, p. 6), recently released for publication.    DeRosier’s opening sentences confirm statements made in the film Unlocking the Mystery of Life:The flagellum, with its complexity of structure and multiplicity of function, is a machine that boggles the mind.  While musing on possible phrases that might catch the reader’s attention, I was reminded of the memorable 1926 slogan for the Hoover vacuum cleaner: “It beats as it sweeps as it cleans.”  The flagellum self-assembles as it propels as it responds; that is, the flagellum not only pushes the cell along, it also responds to intracellular signals and it assembles itself.  It seems as amazing as the old Hoover did in its heyday.  But, I thought, the bacterial flagellum does not really ‘beat’; the eukaryotic flagellum, an entirely different machine, does that.  Instead, the prokaryotic flagellum spins, driven by a rotary motor at speeds of over 100,000 rpm in at least one species.  The torque generated by the motor is converted to thrust by the corkscrew-shaped filament or propeller (for a review see [4]).    Of the 40 genes needed to code for a flagellum, at least 24 produce proteins found in the final structure….After describing the wonders of this machine, DeRosier once again found inspiration in commercials: “Let us end with another familiar slogan but this time applied to the tomograms of the flagellum: ‘It’s the real thing.’”last_img read more

McAfee Buys Trust Digital Mobile Security

first_imgRole of Mobile App Analytics In-App Engagement Why IoT Apps are Eating Device Interfaces What it Takes to Build a Highly Secure FinTech … Related Posts The Rise and Rise of Mobile Payment Technologycenter_img Tags:#mobile#security#web curt hopkins McAfee, the computer security firm, announced that it is buying Trust Digital, a smartphone management and security software company. McAfee, which has nearly $2 billion per year in sales, is hoping the acquisition of Trust Digital will allow it to present a total security loop, from endpoint, McAfee’s speciality, through a company’s smartphones, and back again.Trust Digital helps “secure and manage corporate smartphones and PDAs” worldwide. They are global leader, though they have only about 40 employees to McAfee’s 6,000. Trust Digital’s offerings support iPhone OS, Android, Web OS, Windows Mobile, and Symbian mobile operating systems. McAfee expects to mesh these with its ePolicy Orchestrator, its “enterprise-class, open platform to centrally manage security for systems, networks, data, and compliance solutions.”The companies expect the deal to close by June 30. McAfee’s shares fell 11% last month, as its Q1 revenues and forecast came in under Wall Street estimates. That was in part due to the faulty signature it released that misidentified a Microsoft XP system file as a threat, along with foreign currency changes and a stock buyback. The negotiations on the company’s purchase of Trust Digital would have begun long before that, but the hope no doubt is that this move will contribute toward reconciling future earnings with shareholder and analyst expectations. last_img read more

Avoid Unvented Gas Heaters

first_imgLet me get right to the point: unvented gas (and kerosene) space heaters and fireplaces are a bad idea. Don’t install one.Euphemistically called “vent-free appliances” by the gas industry (see ventfree.org), unvented heaters and fireplaces that are installed indoors release combustion products directly into the living space. These heaters are very popular, with buyers attracted to the low purchase price and inexpensive installation. According to data in Appliance magazine, U.S. sales of vent-free room heaters have averaged 290,000 units per year from 2004 through 2008.Installation is cheap. You just buy the unit, hook it up to your gas supply, and turn it on. There’s no annoying vent pipe to install through the wall or up the chimney. Simple, right?To dig a little deeper, let’s take a look at combustion. When we burn a hydrocarbon fuel, such as natural gas or propane, the fuel reacts with oxygen producing heat and two primary combustion products: water vapor and carbon dioxide. Using your living room as a chimneyThere are two problems when we allow those combustion products be exhausted into our living room. The first is that, along with water vapor and carbon dioxide, there are some combustion by-products that aren’t good for us. With an unvented gas space heater, the combustion process is very complete — 99.9% efficiency or higher, according to manufacturers — but that tenth or hundredth of a percent can be pretty nasty, containing constituents as carbon monoxide, nitrogen dioxide, soot, and unburned hydrocarbons.Carbon monoxide is toxic (even deadly) at high levels and causes long-term health problems at low levels. Nitrogen dioxide, at even minute levels, may affect our immune systems and increase our susceptibility to respiratory infections. An oxygen depletion sensor (ODS) on unvented gas heaters and fireplaces shuts off the gas flow if the oxygen level drops below 18% (an indicator that not enough fresh air is getting into the house), but the ODS does not detect carbon monoxide or other hazardous emissions.The second problem with venting combustion products indoors is that even the “clean” combustion products aren’t so good to introduce into our homes in large quantities. High levels of carbon dioxide make us feel drowsy and may cause eye irritation. Large quantities of water vapor released into our houses will raise the humidity level and can result in condensation on windows, concrete slabs, or areas of wall with “thermal bridges” through them. This moisture can result in mold growth, induce allergies and asthma among homeowners, and cause rot. The tighter the house, the greater the risk. A 30,000 Btu/hour unvented gas heater will produce about a third of a gallon of water per hour — about seven gallons per day if operated around the clock.One should get an inkling that unvented gas heaters and fireplaces aren’t so good by reading the warning labels that come with them — suggesting that a window be opened during operation, that they not be operated for more than four hours at a time, and that they not be used as a primary heating system. Are those recommendations really going to be followed?That unvented gas and kerosene appliances are a bad idea is no secret. A lot of scientists and health professionals have long argued that they don’t make sense. Our publication, Environmental Building News, and other publications such as Energy Design Update and Home Energy have argued for years that such appliances should, in fact, be banned by building codes.But, remarkably, the regulations have gone the other way. Strong influence by industry in the code-setting process and the adoption of increasingly universal building codes have made it more and more difficult for states and provinces to prohibit these products. The International Mechanical Code accepts unvented heating products, and that code has been almost universally adopted throughout North America. In 1996, six states prohibited these unvented heaters (California, Alaska, Montana, Minnesota, New York, and Massachusetts), as did all Canadian provinces except Manitoba and British Columbia. Today, they are prohibited in only one state: California.Even though we are largely blocked from banning unvented heating appliances through our regulations, we can at least exercise our good sense by not buying them. It’s more expensive, but we should only install combustion heating equipment that vents to the exterior. Period. End of story. I invite you to share your comments on this blog. You can also follow my musings on Twitter. RELATED ARTICLES A Ventless Gas Fireplace Doesn’t Belong in Your HomeMartin’s Useless Products ListQ&A: Experience with Rinnai vent-free convectors?Q&A: Ventless propane heaters in crawl space Q&A: What would cause water dripping from a cedar cathedral ceiling?last_img read more

Seeing Red on a Green Property Appraisal — Part 2

first_imgWhat are you willing to give up?Without the money to finance the up-front cost of green enhancements, the borrower may be forced to decide among competing priorities. What to give up: Upgraded kitchen cabinets? Imported granite countertops? Backyard deck? Garage? Thicker walls for higher R-value insulation? Triple-pane windows for double-pane? Geothermal HVAC? Photovoltaic or solar thermal systems? RELATED ARTICLES Green Building Appraisal and Financing IssuesGreen Home Appraisal WoesA Step Toward Fairer Green Home ValuationsWhen Green Poses an Appraisal ProblemGetting a Grip on Green-Home Appraisals and InsuranceQ&A: Bad Appraisal on a New Green HomeQ&A: Refinance and Appraisal of Net-Zero Home Kicking the Tires on a Passivhaus ProjectGoodbye Radiant FloorSelecting a General ContractorPlans and Pricing for Our House in MaineLooking Through Windows — Part 1Looking Through Windows — Part 2Looking Through Windows — Part 3Looking Through Windows — Part 4Looking Through Windows — Part 5Looking Through Windows — Part 6Looking Through Windows — Part 7Designing Superinsulated WallsCutting Down Trees and Milling LumberA Visit to the Local SawmillSeeing Red on a Green Property Appraisal — Part 1Seeing Red on a Green Property Appraisal — Part 3 That’s a tough call for many people, even for those who want to go green. Green enhancements are often invisible — you can’t see the extra insulation; a window is a window. Yet it’s easy to fall in love with very visible upscale kitchen appliances, custom draperies, or the lovely landscaping. These amenities provides an immediate, visceral connection of quality and beauty, while the former is invisible to the casual observer. [Editor’s note: Roger and Lynn Normand are building a [no-glossary]Passivhaus[/no-glossary] in Maine. This is the 16th article in a series that will follow their project from planning through construction.]If you have read my previous blog (“Seeing Red on a Green Property Appraisal – Part 1”), you know that the appraiser failed to list or value any of the green/energy efficient aspects of EdgewaterHaus. Does it matter?Absolutely!Most borrowers include the cost of the green enhancements as part of the overall construction cost. They then get a loan to cover some or all of the up-front construction cost. If the appraisal doesn’t value the green enhancements, the lender will likely reduce the value of the loan accordingly, particularly if the borrower is already at the maximum loan to value amount. It’s the “no tickee, no laundry” syndrome. BLOGS BY ROGER NORMAND center_img The first article in this series was Kicking the Tires on a Passivhaus Project. Roger Normand’s construction blog is called EdgewaterHaus. Immediate gratification or delayed gratification?Some green enhancements — like a tighter building envelope or a PV system — provide an economic benefit, but the payback period extends over a period of years. I’m not a sociologist, but I think most Americans prefer immediate versus delayed gratification. So they opt for the lovely imported tile floors — and so what if they spend $100 a month or more on utilities?I should also clarify shades of “green” here. Good for you if you are going to replace incandescent bulbs with CFL bulbs, or use Energy Star appliances. Just don’t expect the appraiser to note or value that.These are “typical” upgrades. I am talking about more substantial improvements, like additional wall, ceiling or sub-slab insulation beyond minimum code requirements. And while use of sustainable materials is noble for the environment, I suspect somewhere between few and not many individuals would be willing to pay more for a home that includes sustainable materials. Perhaps more importantly, there is really no way for the appraiser to objectively quantify the marginal market value of these materials.So go for sustainable materials; just don’t expect them to be valued in the appraisal. Suggestions for those facing an appraisalIn my web research, I found many articles written about the failure of property appraisers to equitably value green construction, but few suggestions on how to increase your chances of getting an appraisal that equitably values “green,” or how to challenge one that failed to do so.So here are my suggestions freshly culled from the school of hard knocks. I wish I knew then what I have now learned through experience and research.1. Work with a lending institution that sees real value in “green.” Lenders who value green construction may be just as scarce as green appraisers. It will likely be an easier case if you will be building or substantially remodeling a home to a nationally recognized LEED, Energy Star, Passive House green standard. Talk to the lender about whether they will support your green efforts before applying for the loan. If not, walk!You want the lender on your side if your wanna-be green appraisal turns you red, like it did with us. Our lender was extremely supportive, agreeing to discard at no cost to us an appraisal that valued our Passivhaus/LEED Platinum home as “typical” for energy efficiency. The bank then agreed to engage another recognized green qualified appraiser.2. Work with the lender to find an appraiser with green credentials. This can be tricky on many fronts. Lenders typically have a list of approved appraisers that they work with, and may be uncomfortable using an unfamiliar appraiser. Under new federal loan standards, neither you or the loan officer has any say in which of the approved appraisers will be selected. But you can suggest to the lender individuals from nationally recognized appraisal organizations that have demonstrated green skills.One such organization is the Appraisal Institute (AI), a global membership association of professional real estate appraisers with more than 24,000 members throughout the world. AI launched a Green Valuation Program in January 2011 to “educate appraisers on the intricacies of valuing high-performance residential and commercial buildings.”AI maintains a registry of individuals who have completed courses in residential and/or commercial courses in its Valuation of Sustainable Buildings program. Find out which appraisers in your region have completed these courses and suggest to the bank that they select one of these individuals. Fortunately for us, our bank agreed to employ one of the two AI members in our area with green credentials, even though they had never used him before.3. Make sure the appraiser is properly armed with all the green features in the home. Don’t let the appraiser guess or assume he/she will realize all the features. Lead the horse to water and hope he will drink it!Be sure the architectural drawings fully identify the green features. Ditto with the list of construction specifications. The appraiser should have access to all the drawings and specifications, and you should be suspicious if none are requested.Provide the appraiser with a summary, brochure, web link or other reference material that explains the green construction standards you plan to meet. Offer to discuss the green specifics with the appraisers. Even better is to have the builder or architect discuss the green features with the appraiser.Be specific, polite, and professional. And remember that the appraiser’s job is assess the VALUE on the property based on what other individuals are likely to willing to pay. So emphasize the economic benefits of energy efficient aspects.4. Take a deep breath and wait for the appraiser to prepare the appraisal.My next blog will discuss how the appraiser should recognize the green features of the home, and different approaches on valuing green.last_img read more

Manganiyar singer thrashed to death in Rajasthan village; families flee homes

first_imgAbout 20 families belonging to the Manganiyar community of folk musicians have fled their native village in Jaisalmer district of Rajasthan after a community member was allegedly beaten to death following a dispute over a ritual in a local temple. The folk singer was held responsible for failure of a temple ritual.A faith healer, Ramesh Suthar, who belongs to the ‘Bhopa’ (exorcist) clan, had claimed that Amad Khan (45) had failed to perform a specific melody at the temple in Dantal village during the Navratra festival, because of which the spirit of the temple goddess did not enter his body. He allegedly thrashed the singer and broke his musical instruments.Suthar allegedly entered the house of Khan, along with some accomplices on September 27 night and assaulted him again, leading to his death. Police have arrested Suthar and launched a hunt for two other accused after registering a murder case under Section 302 of Indian Penal Code.The frightened Manganiyar families have fled Dantal village and about 200 persons are camping at Balad, 20 km away, under the police protection. Some of them shifted to the Jaisalmer town earlier this week and are staying at a night shelter near the railway station.Though the police have assured them of security if they return to their native village, Manganiyars claim that they were being threatened by the dominant Rajput and Suthar castes. Gunasar Lok Sangeet Sansthan president Baksh Khan said the Manganiyars expected the district administration to help in their rehabilitation.last_img read more

Meghalaya mine mishap: No change in water level

first_imgThe multi-agency operations to rescue the miners in Meghalaya failed to make any headway on Thursday, with efforts to pump the water out of the mine not yielding any result. The divers of the Navy and the National Disaster Response Force (NDRF) were not able to resume the search operation for the 15 trapped miners as they could not go inside due to the high water level. Asked if the divers would take another chance later in the day, operation spokesperson R Susngi told PTI that they would wait, but there was a remote chance of the water level reducing so soon. The 15 miners remain trapped in the 370-foot-deep illegal rat-hole coal mine in Lumthari village of East Jaintia Hills district since December 13 after water from a nearby river gushed in. The operation to rescue them entered the 22nd day on Thursday. Fire service personnel from Odisha resumed work at 10 am and it was found that the water level has risen again, a day after full-day pumping resulted in it receding by 16 inches, Mr. Susngi said. One more pump will be put to use at the mine on Thursday and another would will be installed at an abandoned mine, about 100 metres away, he said. Meanwhile, the high-powered submersible pump from Coal India is yet to begin work, three days after it arrived at the site. Preparation is still going on to get the pump operational, Mr. Susngi said. The spokesperson had said divers would resume operation once the water level at the main shaft decreases to about 100 feet from its current level of over 160 feet. Authorities said there were at least 90 abandoned mine shafts in the area and they were full of water. Rescuers believe that these nearby mines might be interconnected and draining out water in these mines could help in reducing the water level in the main shaft.last_img read more

July 18 2008 Photo text sa Th

first_imgJuly 18, 2008 [Photo & text: sa] The June 15. workshop participants graduated. Congratulations to: [from left] Lindsay Marsh, Todd Findley, Brendan Siegl, Tyler Scott, Toa Rivera, Mark Moynihan, TJ Bogan, Jonathan Schafer, Rebecca Brown, Mateo Mir Bashiri and Magda Lojewska. [Photo & text: sa]last_img