ELMHURST, Ill. – The Drake University men’s tennis led the All-Summit League Team with five selections, while head coach Davidson Kozlowski was named Coach of the Year, the league announced Thursday evening. Kozlowski, who was named Missouri Valley Conference Coach of the Year four times, adds Summit League Coach of the Year to his resume. He guided the Bulldogs to a 17-13 recorded and regular season conference title. Clark and Hands both went 6-0 in league play and each have tallied a team-best 17 singles wins this spring. Hands leads the Bulldogs with 20 doubles win, while Clark has recorded 16 doubles victories. Hall, who joined the team in January, has recorded nine singles win and went 4-0 during league play. In doubles, the rookie from Wellington, New Zealand has posted 14 wins and a 5-0 Summit record. Drake opens the Summit League Tournament on Friday against Oral Roberts. The winner will advance to the league championship match on Saturday. Print Friendly Version Gillespie has collected 14 singles wins and recorded 14 doubles victories with doubles partner Thorold at the team’s top doubles spot. Thorold has totaled 11 singles wins, including two at the No. 1 singles spot. Juniors Ben Clark, Vinny Gillespie and Tom Hands, sophomore Barny Thorold and freshman Finley Hall all earned All-Summit honors.
SANTA CLARA — Here are key observations to the 49ers initial, 53-man roster following today’s 1 p.m. deadline:— Running back Jerick McKinnon: He will miss a second straight season because of a right knee injury that’s sent him onto injured reserve. He is not eligible to return under the short-term IR designation because he was not on the initial 53-man roster. He had three setbacks in the past six weeks. He tore his ACL last Sept. 1 in practice, an hour or so after the 53-man roster got set …
They warned us.Last April: “I think geometrically speaking it’s not likely,” Stephen Curry told ESPN, talking about his quirky, fun, unique tunnel shot with which he delighted fans at Oracle Arena. “Because of where the entrance to the new (Chase Center) arena is. But I’ll probably get creative with something.” CLICK HERE if you are having a problem viewing the photos or video on a mobile device August:RIP Steph’s tunnel shots once they move to SF pic.twitter.com/fwHNJm5OSJ— …
Inventors aren’t partial. They are willing to find inspiration in plants, animals, and microbes. Here are three examples showing that all kingdoms of life have great engineering ideas that researchers involved in biomimetics are seeking to understand.Plants: We don’t fight walled cities with catapults any more, but storing elastic energy can still be useful. According to Science Daily, Dr. David J. Ellerby at Wellesley College studies plants for ideas. “While plants are generally thought of as immobile organisms, many of them are capable of spectacularly rapid movements,” he said. One species catapults its seeds with rapidly-uncoiling valves. “The entire coiling and launching process is completed in around 5 msec – faster than the blink of an eye,” the article said. Why does Dr. Ellerby think it is worthwhile to study how plant tissues store such impressive amounts of energy? “This could inform the design of human-engineered structures for absorbing or storing elastic energy,” he said.Animals: Spiders are still the envy of modern-day spidermen who want to mimic their strong, PhysOrg reported on work going on at Arizona State – just one of many institutions eager to tap the secrets of this wonder material. Think about the wonder of the web coming out of the spider’s spinnerets: “They’ve taken this aqueous protein solution and they’ve pulled an ultra-strong fiber that is no longer soluble in the medium it was in,” exclaimed Jeff Yarger of ASU. “When it rains outside, webs don’t dissolve.” His team is throwing all man’s high-tech imaging equipment at the stuff – MRI, NMR, Raman spectroscopy, X-ray diffraction – to understand it. ASU is not only interested in the final product, but understanding how it is produced by the spider, because “Imitating the natural process will allow scientists to create products in an environmentally friendly way.” One of the environmental hazards, though, is having to work close to black widows in addition to the friendly garden orb spinners.Cells: Proteins and DNA include structures called coiled coils. According to a paper by a European team published in PNAS,1 “Coiled coils are extensively and successfully used nowadays to rationally design multistranded structures for applications, including basic research, biotechnology, nanotechnology, materials science, and medicine.” Consequently, they want to understand better how cells produce them. Using a transcriptional factor from yeast, they announced, “We found an unexpected, general link between coiled-coil oligomerization-state specificity and trigger sequences, elements that are indispensable for coiled-coil formation.” Multiple states can coexist in the trigger sequences and give rise to different structures, they found, “revealing a delicate balance of the resulting oligomerization state by position-dependent forces.” The resulting ability to predict the oligomerization state “should have major implications for the rational design of coiled coils and consequently many applications using these popular oligomerization domains.” 1. Ciani et al, “Molecular basis of coiled-coil oligomerization-state specificity,” Proceedings of the National Academy of Sciences, published online before print November 2, 2010, doi: 10.1073/pnas.1008502107.Rational design: is that the same thing as intelligent design?(Visited 9 times, 1 visits today)FacebookTwitterPinterestSave分享0
2 April 2003Informal arts and craft traders in the North West province stand to benefit from a R10-million cultural village to be constructed in Damdoryn in the Madibeng municipality within the next few months.North West Economic Development and Tourism MEC Maureen Modiselle, together with Environmental Affairs and Tourism Deputy Minister Rejoice Mabudafhasi, turned the sod on Tuesday at a site earmarked for the construction of the village.The project, to be named the Tsotsoloso Madibeng Cultural Village, will create integrated tourism cluster activities to help alleviate poverty by accommodating informal traders in a shelter favourable for conducting business.Speaking at the ceremony, Modiselle said the project would empower informal traders in the arts and crafts industry who sell their wares on a site at the Damdoryn fourway stop on the way to Hartbeespoortdam.“These traders experience exploitation by the site owners and harsh conditions during bad weather,” Modiselle said.She added that in the medium and long term, there would be a consolidation of the tourism growth node within the area, which attracts international and local visitors.“This development is also aimed at increasing access and harnessing the principles of black economic empowerment.”The provincial economic and tourism department said it has allocated R3.6-million for the project, while the national environmental and tourism department has allocated R6-million. The local municipality secured R1.5-million.The provincial department said in a statement that the land has been purchased and that plans for capacity-building training are at an advanced stage to empower the traders to run the project as well as maintain the village.Source: BuaNews
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At some point in our lives, we’ve all been in an apartment building or a hotel and smelled cigarette smoke or cooking odors from a neighbor. Or maybe you’ve heard an argument (or other things) going on next door that you didn’t want to hear. Let’s face it: living in apartment buildings is not without annoyances.Fortunately, there are simple ways to alleviate some of these problems: by sealing up the gaps in the walls between apartments. This is “compartmentalization.”Many people still have the mistaken impression that air leakage is good for health. But when they say that “Yeah, sealing is good, but you don’t want to make it too tight,” what they are really saying is, “Don’t forget about air quality.” I agree — air quality is important. Moreover, research has shown the link between airtightness and ventilation performance. When I worked at Steven Winter Associates (SWA) in Connecticut, we found that ventilation systems work better with tighter apartments.In this article, I’m going to lay out some of the arguments for compartmentalizing buildings. In an upcoming article, I’ll describe inexpensive ways to test a building to save energy, improve fire safety, and improve health, and I’ll discuss a proposed change to the International Energy Conservation Code. Old Mrs. McGillicuddyAirflow patterns in most buildings are much more dependent on the weather than any of us would like to admit. Old buildings with no ventilation system at all are subject to this cruel reality even more than new buildings with ventilation systems, because people in old buildings use “double-hung thermostats” (a.k.a. windows) to get fresh air and control the heat.Andy Padian, the guy who hired me at SWA, used to tell the story of old Mrs. McGillicuddy, who lives on the first floor of an equally old apartment building in New York City. One night during a snowstorm, this building is toasty warm, even overheated, which is common for New York buildings. That’s just fine with old Mrs. McGillicuddy, who’s always cold. But the residents on the top floor are so hot they are about to pass out, so they open the windows for relief. This is opening the flood gates for the chimney effect. Relief does come to the top floor — not through the open window, but through the gap around the hallway door. Air rushes up from the lower floors and floods into the top-floor apartments, cooling them off. Much better.But poor Mrs. McGillicuddy on the first floor begins to suffer because the makeup air for that upward draft comes through the gaps and cracks in her walls and windows. She gets cold, rings up the building superintendent, and screams at him to turn up the heat, gosh darn it. He begrudgingly obliges, not wanting to feel her wrath any more tonight, and the whole building gets hotter. Thus, the cycle continues and the heating bill skyrockets.Two things are at play here: one is heating system imbalance, which we all know is bad. The other is that apartments are far too well-connected to each other and the common spaces. Occupants are unpredictableI have to admit that the data that we got from our research was sometimes messy. The hard thing about doing research in occupied buildings is that they contain occupants; and occupants, no matter how much you instruct them to not touch your sensors or open the windows, will do whatever they please.But to me this was instructive. We had a hard time figuring out which way the air was flowing in the building because people were always opening doors and windows and messing it up! A true working ventilation system in a multi-unit building must be able to deal with this. Herein lies the lesson.Let them open the windows! Let them control the heat! If they are too hot, give them a thermostat in every room to shut off the heat. If they need fresh air, let them open the window. If you want to save energy, put a sensor on the window that reduces the heat when the window is open.There is quite a lot of wisdom in unitizing HVAC systems and controls. Ductless minisplit systems are a great example of this. In fact, many experts believe that individual electric systems will be the way of the future in a post-fossil-fuel world. But you can’t really count apartments as unitized until you seal them from each other. RELATED ARTICLES Designing a Good Ventilation SystemPassive Air Inlets Usually Don’t WorkThe Stack EffectResidential Commissioning Should Occupants Have Control of Their Home Ventilation System?Occupant Behavior Makes a DifferenceVentilation Rates and Human HealthHow Much Fresh Air Does Your Home Need?Makeup Air for Range Hoods Suppose you live in an apartment building and your neighbor is a chain smoker. Being very considerate of others in the apartment, your neighbor opens the window with every cigarette and smokes next to it, blowing the smoke outside. The problem is, because your building is built with constant exhaust ventilation, when your neighbor opens the window, the forces described by building science conspire to distribute that smoke around the building.When your smoking neighbor opens the window, the pressure in that apartment drops to virtually zero with respect to outside — the open window allows air to move in and out freely. But your apartment and the rest of the building is still under negative pressure because your windows are closed and the exhaust vents are still sucking. What happens to the neighbor’s smoke?It gets pulled into the hallway, and into the other neighbors’ apartments, including yours, because the slight negative draw caused by the exhaust system in your apartment pulls it there. (See Image #1 at the top of the page.)We know this happens because we can look at the pressure monitoring data from different buildings. In that building, on that floor, during that weather, with the windows in that particular configuration, air flows out of the neighbor’s apartment, into the hallway, and into yours. But why is it that you can only smell the smoke on some days? Because all those variables mentioned — windows, doors, HVAC operation, temperature, wind — are all changing all the time, and only sometimes do they line up to deliver that gift from your neighbor.There are some options to help ensure that makeup air comes from intended sources, like passive vents in the exterior envelope. For example, trickle vents are small slotted vents often mounted in a window frame; they are common in the U.K., and some U.S. builders use them as a low-cost solution to providing makeup air. Other devices include small vents in through-wall HVAC systems and even engineered holes straight through the wall. Stack effect and ventilationBuilding scientists have been talking for years about “stack effect” — the tendency of temperature differences between the inside and outside of tall buildings to create pressure differences and drive air infiltration. It’s one of the first concepts covered in building science courses, and it’s been in ASHRAE Fundamentals for a long time. We’ve heard over and over that dividing larger buildings into smaller airtight blocks by compartmentalizing cuts down on stack effect. The idea is that if you cut the vertical distance over which the driving forces of stack effect can act, then you can reduce the rate of infiltration. The pressures in the tight apartment fluctuate with operation of fans, opening of trickle vents, etc., while the pressures in the leaky apartment (see the graph below) can hardly be manipulated. In other words, the tight apartment allows you to gain supremacy over the pressure so that you can control where the air comes and goes. The leaky apartment? It’s as unpredictable as the wind. But many benefits of compartmentalization don’t have anything to do with saving energy, at least not directly. Take the example of an apartment building. Speaking generally, well-sealed apartments inhibit the passage of secondhand smoke, smells, and other pollutants; reduce sound transmission; and impede the passage of pests and vermin between neighbors. They are also safer in a fire, because they help prevent the passage of hot gases that make fires spread and smoke that suffocates people.In addition, compartmentalized apartments make buildings more resilient to changes in building operation. During research that I was involved in at SWA, studying buildings in New York City, we found many benefits of compartmentalized apartments, and a lot of the benefits had to do with controlling indoor air quality. In short, the better sealed your apartment is, the better it functions in real life.Pressures in real buildings change all the time in response to changes in temperature, opening and closing windows and doors, changes in HVAC operation, and changes in wind and direction. With these changes in pressure come changes in how air flows into and out of apartments.The most common ventilation strategy in multifamily buildings — constant exhaust from apartments, either centrally or individually — often doesn’t work like it’s supposed to. One reason is that central ventilation systems are often very poorly designed and constructed. Not enough thought goes into designing them, and often the registers are simply way bigger than they need to be. And not enough care goes into building ducts. They’re often extremely leaky, and most building codes don’t require testing of low-pressure exhaust ductwork. Both these issues lead to pressure loss, very poor balance, and sometimes vastly different airflow from apartments.Exhaust-only ventilation may work just fine in single-family homes. The exhaust fans put the home under negative pressure, and as exhaust is pulled out, fresh makeup air comes in through gaps and cracks in the exterior envelope (ideally not from the attic or basement) and balances the flow. But in apartment buildings, SWA found that makeup air for exhaust-only systems is often more likely to come from your neighbor who smokes or from the hallway than it is from “clean” outside air. Furthermore, those flows may be reversed by any of the changes to the building pressure regime noted above.Even supplying makeup air straight from identified sources faces difficulties. Supply air direct from a rooftop ERV/HRV must have well-designed, well-sealed ductwork, and it probably should have self-balancing dampers (for example, CAR damper by American Aldes). In-unit supply fans like the through-wall heat exchanger Lunos, and small fans fitted to fan-coil units or PTACs, must be powerful enough to overcome stack forces in all parts of the building at all times. In laboratory conditions, these fans may move the specified amount of air, but if you place them throughout a real building under winter conditions, with high positive pressure at the top of a building and negative pressure at the bottom, each fan must compete with a different pressure regime. The result is that some of the apartments get more fresh air than others. Sean Maxwell formerly worked as a senior energy consultant at Steven Winter Associates in Norwalk, Connecticut. He now lives in Australia. The unwanted gift from your neighborBy doing long-term monitoring of pressures in apartments, SWA was able to visualize which way the air moves in a building over time with several different ventilation systems. We also put sensors on windows and doors to know when they were opened. And in one building, we could see a major change in the pressure regime of a group of apartments when someone opened a window.I often use the following example to illustrate what happens. All these strategies rely on two usually false premises: that the vents are the largest hole in the apartment envelope, and therefore the most likely path for makeup air; and that the apartment is reliably under negative pressure. Unfortunately, this is almost never true, at least not for all parts of the building at the same time. Passive vents, which ultimately are simply expensive holes in the wall, are often dwarfed by the size and number of other possible leakage pathways in the apartment, most obviously gaps and cracks around the door to the hallway. Check Martin Holladay’s article that nicely sums up the research that we did (“Passive Air Inlets Usually Don’t Work”).In order to make sure that makeup air comes from only where we want it to in an exhaust-only building, SWA research found that many apartments would probably need to be sealed to less than 0.1 CFM50 per square foot of enclosure (0.51 L/s @50Pa per m2). For a one-bedroom apartment, that might be 80 CFM50 (38 L/s @50Pa) total, including leakage from the apartment door. In case you don’t have any point of reference, that’s insanely tight and not likely to be achieved without some help from a magic bullet.Still, you can see the difference in the measured pressure response of two apartments sealed to different levels. I’ll greatly simplify here, but the first apartment (see the graph directly below) was sealed very tight, while the second apartment was sealed only moderately well.
A day after the Patna High Court directed that the media should not publish any information related to the Muzaffarpur shelter home rape case, journalists, politicians and members of civil society on Friday protested it saying “it’s an exercise to gag the media”.The Patna High Court is monitoring the Muzaffarpur State-run shelter home sexual abuse case of 34 minor girls that was exposed in a social audit report of Tata Institute of Social Sciences (TISS) submitted to the government this March.“Under the circumstances, till the investigation is completed, all the print and electronic media are hereby restrained from reporting anything with respect to the case, more particularly, with respect to the investigation already undertaken and/or which is likely to take place as it may seriously hamper the investigation of the case. The State government and the CBI is directed to see that the above order is complied with everybody”, said the division bench of the Patna High Court comprising chief justice Mukesh R. Shah and justice Ravi Ranjan in a three-page oral order.The court had also pulled up the investigating agency CBI for not submitting the status report and the sudden transfer of CBI SP, J.P. Mishra. The court further asked the CBI to explain the progress report in a “sealed cover” on August 27, the next date of hearing.“How can the media be prohibited from reporting any information in the Muzaffarpur shelter home case? It smacks as a gag order and reflects the Emergency era. If media did not report this case, the honorable Supreme Court would have not taken cognizance of the case”, senior Rashtriya Janata Dal leader Shivanand Tiwari told The Hindu.Noted academician Nawal Kishore Choudhury said that the “Patna High Court should reconsider its order of the blanket ban on the freedom of speech and expression which is essential in any democratic set-up.“I think what the Supreme Court had said on the issue that identity of the victims should not be revealed must be maintained but how can the media be refrained from publishing any report on it? It is only because of the media that this Muzaffarpur shelter home rape case has come to light”, Mr. Choudhury told The Hindu.Similarly, former director of Patna-based A.N. Sinha Institute of Social Sciences and social thinker D.M. Diwakar said, “The Patna High Court should revoke its order…media has been only in the role of a facilitator.”Senior journalist K.K. Singh said that the “court order is highly condemnable and it should not have happened. It is only because of the media this sexual exploitation of minor girls at Muzaffarpur shelter home funded by the State government has come to light and even the Supreme Court had taken notice of it because the media published reports on it”.Former editor of Hindi daily Hindustan Sukant Nagarjun told The Hindu that “it’s an effort to censor the media, and it’s a black day for the freedom of speech, a direction towards Emergency days has been given”, he said before adding, “if the media would not have reported it, the infamous fodder scam would not have come out”.Political observer and editor of Bihar Times.Com Ajay Kumar too expressed his shock. “It reminds us of the Emergency days when the media was gagged. How can the media be asked not to the public any report regarding Muzaffarpur shelter home rape case? It’s in the public interest that the media reports what is happening in the case”.
A Congress candidate arrested twice for alleged involvement in rhino poaching has won the Gram Panchayat president’s seat from Suwaguri in northeastern Assam’s Biswanath district.The victory of Dilwar Hussain has left the Congress red-faced. Leader of the Opposition Debabrata Saikia, who represents the Congress from the Nazira seat, said this was “unfortunate” and blamed it on a technical glitch.“I don’t know how this happened. We had cancelled his candidature. Probably, the withdrawal time was over, or there might have been a technical glitch because of which he could still contest and win. It is unfortunate. Any decision on him will be taken by the party president,” Mr. Saikia said.Before the elections on December 5, Assam Congress president Ripun Bora had said that the party had rejected Mr. Hussain’s candidature. Mr. Hussain was allegedly involved in killing rhinos at Kaziranga National Park in 2011, and a case had been registered against him at Biswanath Chariali Police Station.The Asom Gana Parishad (AGP), too, had fielded Ganesh Doley, who served jail in cases of rhino poaching and illegal trade in wildlife body parts. He lost to a Bharatiya Janata Party (BJP) candidate from the Moridhansiri Gaon Panchayat seat in eastern Assam’s Golaghat district.
The chief mufti of Aligarh urged Muslims on Thursday to refrain from offering namaz on the streets, making a bid to defuse the controversy over the district administration’s recent ban on religious ceremonies on roads. Mohammad Khalid Hameed said the place for performing Friday prayers was inside a mosque. “If there is a spill over, the devout should not perform namaz on the streets and cause inconvenience to others,” he told reporters. “Instead, they could offer their prayers on rooftops of neighbouring buildings wherever convenient.” The Aligarh administration had imposed a blanket ban on holding any religious function on the roads in the U.P. district without prior permission. The authorities has taken the step as a precautionary measure to prevent any disturbance after some Hindutva groups had last week planned the recital of ‘Hanuman Chalisa’ every Tuesday.