Minimizing Animal Stress Due to Facility Noise and Vibration

Studies have conclusively shown that noise and vibration can adversely affect breeding in laboratory mice and the problem is reportedly widespread. Investigators, facility managers, and other professionals working with laboratory mice in medical research facilities are aware that research can be negatively impacted when breeding performance declines. Efforts to maximize healthy pup yield and minimize costs through sound breeding management practices should also include stress control. Sudden bursts of noise or vibration causing startle are possibly more harmful than some sustained or continuous vibrations. The misunderstanding of factors causing startle and distress in mice is likely due to our complete lack of perception of the phenomenon. Low frequency building vibrations and ultrasonic sounds are far below and above human detection. Vibration as a Stressor Vibrations in a holding room are known to shake the animal racks and caging equipment. As stressors, vibration sources may be continuous or random. Continuous exposure to vibrations can impose fatigue and sleep deficiencies. Random vibrations occurrences have been known to invoke panic in mice whereby they cannibalize their...

Govt warns RMG owners, workers to tackle unrest as election looms - bdnews24.com

The minister made the warnings after an emergency meeting with the Crisis Management Core Committee at the Secretariat in Dhaka on Thursday. “We recently observed that, a group of people who do not want the election to be held are trying to create unrest in our largest sector of readymade garments. They are holding various campaigns over the demand of a new wage scale,” Mujibul said.   The government had published a gazette fixing the minimum monthly wage of readymade garment factory workers at Tk 8,000 on Nov 25. Whereas the new rate for around 4 million workers brought a 51 percent increase, an effort is being incited to create several wrong interpretations among the workers of the RGM sector, he said.     An estimate of the effects of increasing wages is to be sent to the industry owners and workers’ leaders of Bangladesh Garment Manufacturers and Exporters Association and Bangladesh Knitwear Manufacturers and Exporters Association. Several left-wing labour organisations have demanded minimum wage of Tk 16,000 a month for the RMG workers in consideration of inflation and wages for other workers. They organised several rallies and human chain programmes on a regular basis as ...

Florida Gov. Ron DeSantis backs underground power lines

TALLAHASSEE, Fla. — Gov. Ron DeSantis on Thursday signed a bill that could lead to more underground power lines in hurricane-vulnerable Florida and vetoed two measures that would have imposed health care-related fees. The bill dealing with power lines (SB 796) came after millions of residents and businesses lost electricity in hurricanes during the past three years. State officials and utilities have long faced questions about why more power lines are not buried underground, where the lines could be less susceptible to punishing winds and falling trees. Utilities already have underground power lines in some areas. But a key part of the bill would change the way underground power-line projects are financed, a change that could lead to more projects — but also higher bills for utility customers. While acknowledging the potential higher costs, supporters of the bill pointed to the economic damage done when electricity goes out for extended periods, such as after Hurricane Irma in 2017 and Hurricane Michael in 2018. “This is what I do know, right now we spend billions of dollars every time the power goes out to get it back on,” House sponsor Randy Fine, R-Palm Bay, said...

Restored Nasa Mission Control comes alive 50 years after Apollo

Nasa has held a grand reopening of its Mission Control room from the Apollo days after it was meticulously restored to the way it looked 50 years ago. The site at Johnson Space Centre in Houston was last used for space shuttle flights in the 1990s, and has been recreated down to the carpeting, wallpaper, glass ashtrays and retro coffee cups. The reopening caps years of work and millions in donations, and it opens to the public on Monday, weeks before the 50th anniversary of the Apollo 11 moon landing. Gone is the haze of cigarette, cigar and pipe smoke, as well as the coffee, drinks and pizza stains, from 1969 when Neil Armstrong and Buzz Aldrin landed on the moon. From ceiling tiles to ashtrays, the Apollo Mission Control Center has been restored to appear as it did in 1969, in time to celebrate the #Apollo50th anniversaries. This National Landmark reminds us of our achievements & inspires us to continue exploring. https://t.co/FAAKBLGUNT pic.twitter.com/qctF2NLU5W It was given the stamp of approval from retired flight director Gene Kranz, a man for whom failure — or even a minor oversight — was never an option. But, seated at the console where he ruled over Apollo 11 and ...

Friday, June 28: 21+ Night: Block Party at Carnegie Science Center6–10 p.m. Explore Leonardo da Vinci’s

Friday, June 28: 21+ Night: Block Party at Carnegie Science Center6–10 p.m. Explore Leonardo da Vinci’s staggering array of inventions and discoveries — without having to elbow your way through a gaggle of 8-year-olds — at an after-hours block party that includes giant beer pong, laser karaoke, liquid nitrogen ice cream and much more. Friday, June 28: Pierogi Pop Up & Panel at the August Wilson African American Cultural Center5-9 p.m. Discover what food and drink can tell us about identity in Western Pennsylvania during this panel discussion with food purveyors, producers and writers. See and taste food in entirely new ways while sampling doughy delights like pierogies and empanadas and sipping cocktails, ciders and brews. Friday, June 28: Bottoms Up Bingo at the Oaks Theater 7:30-10 p.m.Bingo with grandma is fine. Bingo with a drag queen is way better. Join Alora Chateaux in charming Oakmont for the Burgh’s most fab bingo bash complete with cool prizes, tunes by DJ Louie and yummy bar refreshments. Friday, June 28: Booths on Bouquet in Oakland11 a.m.-2 p.m. Admire summer’s breathtaking blooms — and score new garden goodies — as you wander through this new open-air flower ma...

WOLF STREET REPORTBeer, Wine, & FoodBrick and MortarCalifornia Daydreamin’CanadaCars, Trucks & CrashesCentral BanksChinaCommercial PropertyCompanies & MarketsConsumersCredit

WOLF STREET REPORTBeer, Wine, & FoodBrick and MortarCalifornia Daydreamin’CanadaCars, Trucks & CrashesCentral BanksChinaCommercial PropertyCompanies & MarketsConsumersCredit BubbleCryptosDebtor NationEnergyEurope’s DilemmasGold & SilverFederal ReserveHousing Bubble 2Inflation & DevaluationInformation AgeJobsTradeTransportationWall St. Shenanigans It’s confession time among the Detroit automakers: GM, Fiat Chrysler, and Ford all got ugly, in unison, in one day, something we haven’t seen since the Financial Crisis. Back at the end of May, GM shares (GM) were trading at $38 when it announced that SoftBank, the Japanese company that is blowing borrowed billions left and right, would invest $2.25 billion in GM’s self-driving car unit Cruise. By June 11, GM shares had shot up to $45. But this morning they’re at $37.16. That’s a 17% plunge from June 11, including the 5% drop Wednesday and today. In its earnings report Wednesday morning, it lowered its profit outlook for 2018 by 5% to 9%, as its operating profits in its North America business plunged 23% in the quarter. GM’s “adjusted” profits had hit a record in 2017 of $12.8 billion. That record is now moving out ...

Single 48V to 1V, 200A Converter Powers Microprocessors (Part 1)

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC’s registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726. Microprocessors (µPs) and system-on-chip (SoC) integrated circuits impose very demanding large and fast load current changes of 10 A/µs to 50 A/µs yet require ultra-small transient voltage overshoot to settle very quickly. This is currently handled by up to 12 synchronous buck converters operating in parallel at 5MHz from 12V input, resulting in poor efficiency, large size, and high cost! This legacy solution requires an intermediate bus converter (IBC) to convert 48V bus voltage to 12V. Some companies are attempting to eliminate such intermediate converters and provide a direct 48V to 1V, 200A converter. Besides using an inefficient two-stage conversion solution, all of these also fail to address fast load transient requirements other than using the multi-stage synchronous buck solution. A direct 48V to 1V, 200A solution based on the new Hybrid Switching method and its implementation in novel converter topology employs a new magnetics structure de...

Editor’s note: Each year. Mining Engineering features an industrial minerals review. Several people put in a

Editor’s note: Each year. Mining Engineering features an industrial minerals review. Several people put in a fair amount of time in developing the material for this issue, all the while doing their own jobs. Thank you to the industrial minerals annual review editor, to the Industrial Minerals and Aggregates Division technical committee chair and vice-chairs, and to the authors of the individual commodity profiles. Rajesh Raitani, member SME,of Cytec Industries Inc., is chair of the Industrial Minerals & Aggregates Division’s Technical Committee. Their help makes possible this July industrial minerals issue. On behalf of ME readers, the editors thank them. Four companies – H.C. Spinks Clay Co., Inc., Imerys. Old Hickory Clay Co., and Unimin Corp. – mined ball clay in four states in 2013. On the basis of preliminary data, production was 1 Mt (1.1 million st) with an estimated value of $47 million. Production increased by 3 percent in tonnage from 973 kt (1.1 million st) with a value of $45.1 million in 2012. Tennessee was the leading producer accounting for 64 percent of domestic production, followed by Texas. Mississippi and Kentucky. About 67 percent ...

A self-locking mailbox could someday flag down delivery drones and intelligently screen your driveway for intruders.

A self-locking mailbox could someday flag down delivery drones and intelligently screen your driveway for intruders. Columbus State University computer scientist Lydia Ray presented the technology, called the ADDSMART project, during a 20 October session at the annual IEEE Ubiquitous Computing, Electronics, and Mobile Communication Conference in New York City. The project aims to achieve two goals: clearly marking addresses for autonomous vehicles, and reducing the energy and data storage costs of home surveillance systems. An early prototype mailbox attachment suggests that the trick, in both cases, may be radio-frequency identification. Powered by an Arduino Yun processor, one component of the ADDSMART device controls a high-frequency 13.56-MHz RFID reader, USB camera, passive-infrared motion sensor, solenoid lock, and an onboard Wi-Fi module. The second component is an RFID tag.  Ray came up with the idea when she saw an Amazon ad for drones delivering packages. She wondered how that would be possible, as some of her regular mail still arrives at the wrong address. In the United States, Amazon and Google and startups such as the Reno, Nev.–based Flirtey, are trying delivery ...

BMX Star Nigel Sylvester Hits Paris Fashion Week on the World’s First Electric Harley

Harley Davidson built an electric motorcycle. Yes, really! And SSS World Corp designer Justin O’Shea is here to tell you that an electric American hog isn’t a sign of emasculation, merci beacoup. Today at the Ritz Paris, the diesel-fueled designer actually rode the bike—dubbed the LiveWire—through the garden to take his bow after a thoroughly testosterone-heavy show that featured mafioso tracksuits, aggressively-sharp blazers, a Motorhead collaboration, and lots of muscles. (One of the reasons we love O’Shea? This wasn’t even the first time he took his bow atop an iron steed.) O’Shea’s Spring-Summer 2020 show included someone else comfortable on two wheels: Nigel Sylvester, the Queens-born BMX phenom. If “BMX” conjures images of baggy cargo shorts and Monster logos on flat-brims, you clearly haven’t clocked Sylvester. For one, you won’t find him at the X Games, because he doesn’t compete. Sylvester’s thing is to freestyle around cities, cruising around and finding spots you wouldn’t think of as bikeable. Which is not unlike skateboarders in search of a new part—but Sylvester’s clips break way out of the genre of action-sports videos. His videos are slick and narrative. There’s p...

Jelly Belly Creator Introduces CBD-Infused Jelly Beans

David Klein, a confectioner often credited with creating the popular Jelly Belly candy, has launched a line of jelly beans infused with CBD, a non-psychoactive compound found in cannabis plants. Klein announced the new CBD candy on Instagram. His company, Spectrum Confections, sells CBD beans in 38 flavors, along with a set of 7 sugar-free jelly beans. Each bean contains 10mg of CBD. Spectrum has coated the beans with dextrose suger or Malitol to disguise the CBD flavor, which some people don’t like. In 1976, Klein invented the Jelly Belly, a candy that became so beloved by President Reagan that he kept jars of them at Presidential meetings and sent them on a 1983 Challenger space-shuttle fight. Unlike other jelly beans, Jelly Belly—named after the blues musician Lead Belly—infused flavor into the insides of the candy as well as its shell, using natural purees to improve the taste. In 1980, Klein sold the trademark to the candy to the Goelitz Confectionery Company for about $5 million. Spectrum’s website says that its standard package of 800 beans have all sold out. Because of high demand, the company is taking wholesale orders between 8,000 and 32,000 pieces. It also won’t pro...

As alternative power becomes more efficient, it’s easier to live off the grid than ever before—but

As alternative power becomes more efficient, it’s easier to live off the grid than ever before—but it’s still not easy. What you’re looking at used to be a falling-apart shed used mostly for storing rusty yard tools and mouse droppings. The floor had rotted out, the roof leaked, and if you were standing in there when the wind blew, your hair moved. But the structure was good—the bones, as they say. It’s about 18 by 12. It’s in a semirural backyard, about 200 yards from the house, but it could well be in the middle of the woods, or on a river, miles from any place. The idea came about to restore it as a functional, self-sufficient escape, with heat and electricity. No running water, but that could be done if it was needed. The woodstove is a Morsø 2B, a model produced by the Denmark-based foundry from 1934 to 2000. This one was on Craigslist for $240. The rotten floor was ripped up and carted away, replaced by a layer of Roxul insulation (the vermin don’t like it, nor does moisture) and this sweet tongue-in-groove pine floor from a local (well, two hours away) mill. The fire-rated bricks are from Home Depot. The angle-iron penning in the brick hearth was sold and cut ...

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