Power Theft Undermines JEP’s Operations

first_imgMr. Aleyou Musa Kieta, an overseer Jungle Energy PowerJungle Energy Power (JEP), the leading electricity providing firm in Nimba County, has complained of systematic power theft to its installations, thus hampering the smooth operations of the company, leading to huge losses in revenue generation.JEP management has meanwhile called on residents to protect its installations by reporting anyone suspected of stealing electricity.On Tuesday, December 18, JEP overseer Musa Keita informed the Daily Observer in Ganta, the county’s commercial hub, that the continued power theft by some unscrupulous residents, “is killing the company slowly. And if nothing is done to arrest the situation, the company may likely close down, because the situation has obstructed the JEP from making a profit to meet the growing demands of our legitimate customers.“Let the citizens be aware that the power we are providing was supplied by another company, and we are committed to paying for it in return. So if they continue to steal our electricity, then we will be working at a loss,” Mr. Keita said.He, therefore, wants customers to know that JEP management is not realizing any substantial profit to maintain the business, despite huge challenges in meeting the customers’ demand.“We need our courts to be able to punish those who are caught stealing power,” Keita said.City Solicitor, Wilson Sokpah, said those who are caught are made to pay for the power that was stolen. He denied allegations that they collect money for their own use.“Every cent collected from perpetrators as damages for theft is given to the company’s management,” he said. Sokpah displayed a receipt from JEP confirming that it received US$100 from one Black Davis for power theft through the court.JEP management is calling on residents to protect its power installations by reporting anyone suspected of stealing electricity.Despite the huge challenges, the management has assured the public of constant supply of electricity during the festive season.“All mechanisms have been put in place in all the major towns along the highway to alert the management, in case of any problem,” Mr. Keita added.It may be recalled that JEP has connected over 4,000 homes since it took over the Nimba Grid in 2016, and is expecting to reach 9,000 before the first quarter in 2019.“We are targeting about 9,000 homes by 2019, and at the same time, ensuring that all the big towns along the highway are connected by next year,” Mr. Keita said.Even though JEP explained about making some success in the distribution of electric power to over 4,000 customers in Nimba, there remains a huge gap for communities yet to be connected.Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)last_img read more

USC a family affair for Ashtons

first_img Collin Ashton can’t name them all, but the family vouches for the veracity of the information: Five consecutive generations of Ashtons have attended USC. So, yeah, Collin Ashton, USC’s senior linebacker, was born to be a Trojan. Every bit as much as Hector was born to be a Trojan. Where he was going to college wasn’t a topic of much discussion around the dinner table. “I was brought up in a family where ‘SC is awesome and some other school is not,” he said after practice Saturday. “I just kinda followed tradition, kept it going. The five generations thing didn’t really come up much.” Ashton has turned into much more than a rabid USC fan and spectator. Five years after joining the football team as an undersized walk-on out of Mission Viejo High School, he is a key contributor and occasional starter at outside linebacker. “A lot of people didn’t think I could do it,” he said. “A lot of them laughed at me and said I was wasting my time.” Ashton redshirted in 2001. He didn’t seem like a threat to take playing time from the scholarship guys. Ever. But by dint of perseverance, energy and lots of time in the weight room, he worked himself onto special teams as a long-snapper and, by 2003, into the starting lineup vs. Arizona. Making him only the second walk-on to start a game for USC in 20 years. He gained a scholarship before the 2004 season. Teammates gave him a standing ovation. Said USC coach Pete Carroll: “This is a great college football success story.” Ashton was pegged as a key backup as a senior, but injuries in USC’s linebacking corps put him on the field every week this season, including starts against Stanford and UCLA. He is third on the team in tackles, with 49, and will start against Texas in the Rose Bowl on Wednesday if Keith Rivers’ hamstring isn’t healed. USC’s football program wasn’t much more impressive than Ashton was, back in 2001. Paul Hackett had been fired as coach, and this Pete Carroll guy, who had been out of football for a year, had taken over. Ashton sometimes has trouble grasping the five-year ride he has been on. Even though he lived it. “Never a day in my life did I imagine where we would go,” he said. “It’s kinda ridiculous.” That would be from 6-6 in 2001 to consecutive national championships, a 34-game winning streak and a chance to make it three straight national titles with a victory in the Rose Bowl. During Ashton’s time at USC, Southern California has turned into one giant Trojans fan club. Complete with USC flags, decals, caps and sweatshirts. Some of the oldtimers look down on those who climbed onto the bandwagon long after it began picking up speed. Ashton, however, welcomes the newcomers. “There’s definitely way more Trojan fans around now, and that’s to be expected,” he said. “That’s always how it is when a team is doing well — some people like to jump on and join in the success. “I don’t really care. The more ‘SC fans around the world, the better.” But are they Trojans the way Ashton is a Trojan? Well, no. Not in the sense of well-heeled south Orange County (Ashton’s dad, Mark, is a CEO). Not in the class-conscious sense of USC connections and networking extending back to the 19th century. Ashton suggests, however, that being a football Trojan is more of a mind-set than a social set. “From what coach Carroll instills, being a Trojan is being someone who is always ready to compete,” he said. “Someone who will do anything to be competitive.” That would describe Collin Ashton, whose USC legacy is more than just the family name. “You step back as a player … and think about what we’ve accomplished, what we’ve done, it’s amazing,” he said. “When this season is over, everyone on this team will say, `Did we really accomplish all that?’ ” Something to tell your children and grandchildren and great-great grandchildren about. Paul Oberjuerge’s column appears Sunday, Monday, Wednesday, Friday. Readers may e-mail him at paul.oberjuerge@sbsun.com 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! AD Quality Auto 360p 720p 1080p Top articles1/5READ MORECoach Doc Rivers a “fan” from way back of Jazz’s Jordan Clarkson “I’ve seen the pictures of them on campus,” Ashton said of his USC ancestors, “and I remember thinking, `That was a long time ago.’ ” Ashton was wearing cardinal-and-gold before he was out of diapers. Almost before he was out of his mother’s womb. “Just the other day I saw a picture of me sitting there with all my ‘SC stuff on,” he said. “I was maybe 1 year old.” Ashton attended his first USC game before he was two months old, in the fall of 1983. He hasn’t missed a home football game in his life. He was a USC basketball ball boy when he was 10. center_img LOS ANGELES — There is the Trojan family. Then there is THE Trojan family. Collin Ashton and his father. And grandfather. And great-grandfather. And great-great-grandfather. last_img

Motorcycle shop earns top title

first_img In place of the hand clutch is a centrifugal clutch, linked to a six-speed transmission with a hand-operated shift lever down by the rider’s left leg. Sparkplug wires, too, and fuel lines are concealed in the chromed 131-cubic-inch V-twin engine. “The idea is to make you wonder how it works,” said Mike Strozzi, MGS’ sales manager. Radical Simplicity does work – a show rule requires that entrants start their engines – but it hasn’t been ridden for fear of marring thousands of dollars worth of paint work. Now that it’s a winner, Stafford and Little will take Radical Simplicity to Japan to tour around motorcycle shows. Unless somebody offers $200,000 or so for it, Stafford intends to keep it as a marketing tool. The last few months have been good to MGS. The company recently more than doubled the size of its Lancaster Business Park shop, which last week held a half-dozen motorcycles under construction. Its Dragon Slayer bike won the Super Radical class at the 2005 Rat’s Hole Show in Daytona Beach, Fla. Another bike made the cover of the February 2006 Easyriders magazine. Dragon Slayer’s win got the shop noticed for a motorcycle-building reality show, called “Metric Revolution,” that is now in production, though a channel hasn’t been decided. MGS was among 24 companies picked to build motorcycles for the show, which will give the winner $50,000. MGS is basing its bike on the world’s biggest production motorcycle engine, a 140 cubic-inch, three-cylinder British Triumph Rocket III with 140 horsepower. Stafford is thinking about adding a turbocharger to give it more horsepower. Members of the MGS staff have been videotaping themselves at work, the series producers will send out a film crew of their own, and MGS will throw a debut party to unveil the finished bike. The debut party will either be at MGS’ shop or at the Staffords’ home. No date has been set. Besides building custom motorcycles, MGS also produces exhaust pipes, fenders, handlebars and fuel tanks for other builders in its Liquid Steel line, shipping them around the country. MGS motorcycles’ prices start about $30,000. “The sky’s the limit,” Strozzi said. All the shop’s motorcycles, despite their wild appearances, are rideable. Some owners ride them daily. “You want to ride something when you pay that kind of money for it that’s definitely a piece of artwork, a showpiece, but at the same time it’s very functional,” Strozzi said. Charles F. Bostwick, (661) 267-5742 chuck.bostwick@dailynews.com 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! AD Quality Auto 360p 720p 1080p Top articles1/5READ MORESanta Anita opens winter meet Saturday with loaded card Mike Stafford and painter Dave Little of Lancaster-based Little Design walked through last year’s hot rod show, admiring the show cars’ appearance. “They’re … so smooth and flowing, so clean and sculpted, they took your breath away. Me and Dave were talking: Why can’t we build a bike with that in mind,” Mike Stafford said. Over $70,000 in parts and hundreds of hours’ work from the Staffords and their five employees resulted in Radical Simplicity, which took the top bike title at the Jan. 20-22 show at the Fairplex in Pomona. “The caliber of motorcycles today is just phenomenal,” said Grand National promoter John Buck. To preserve Radical Simplicity’s clean lines, the handlebars lack the usual brake and clutch levers. In place of the hand brake lever is a proportioning system on the foot lever. LANCASTER – A long, low-slung 150-horsepower motorcycle with paint that shimmers between orange, green and gold bears the title of “America’s Most Beautiful Motorcycle.” Radical Simplicity, the bike that won the 57th annual Grand National Roadster Show’s top motorcycle honor, is the work of MGS Custom Bikes, which started in Mike and Paula Stafford’s garage and now turns out custom bikes getting notice around the country. “It’s such an honor to win the award. It’s a terrific marketing tool for our company,” said Mike Stafford, who built his first motorcycle so he could accompany his motorcycle enthusiast wife before they married and created his business after building more bikes for friends. Radical Simplicity had its origins at the 2005 Grand National Roadster Show, where Paula Stafford’s tangerine pearl bike named Teaser was runner-up. last_img read more

Chelsea hero surprised Hazard’s still a Blue after ‘big chance’ to leave

first_img Cavani ‘agrees’ to join new club and will complete free transfer next summer Top nine Premier League free transfers of the decade Where every Premier League club needs to strengthen in January LATEST Kevin De Bruyne ‘loves Man City and wants to keep winning’, reveals father RANKED 3 3 Courtois and Hazard celebrate with Belgium fans after reaching the World Cup semi-final and winning the bronze medal “There are clubs who say, ‘until we get a replacement, you don’t go’. So there are plenty of decisions to make for Chelsea.“It’s a difficult situation, but I think Sarri with his experience is going to make the best decision for the club and the team.” Arsenal transfer news LIVE: Ndidi bid, targets named, Ozil is ‘skiving little git’ Man United joined by three other clubs in race for Erling Haaland On Courtois’ future, Poyet says his move to Madrid will depend on whether Chelsea can land a suitable replacement before Thursday’s 5pm deadline, but has urged fans to trust Sarri’s experience and judgement.Courtois’ exit would leave the Blues with Willy Caballero and surprise summer signing Rob Green as their only goalkeepers.Reports have suggested former Liverpool glovesman Pepe Reina could move to the Bridge in a £5million deal, just weeks after joining AC Milan in a free transfer, as a stop-gap signing until they can find a more permanent number one.Poyet added: “If he leaves, will Chelsea be able to replace him before Thursday? That’s the most difficult part. Chelsea legend Gus Poyet has admitted his surprise at Eden Hazard still being at Stamford Bridge, saying he had a ‘massive opportunity’ to leave after the World Cup.With only four days to go until the summer transfer window closes, a huge cloud remains over the futures of Hazard and Belgium team-mate Thibaut Courtois.Real Madrid are said to be interested in both players, who starred in Russia and helped Belgium finish in third place.Latest reports claim Courtois is likely to leave, with new manager Maurizio Sarri suggesting after Sunday’s Community Shield to Manchester City that he will allow the goalkeeper to move if he no longer wants to be at the club. Latest transfer gossip on talkSPORT.com Could Pepe Reina be Chelsea’s number one for this season? targets The biggest market value losers in 2019, including Bale and ex-Liverpool star REVEALED Tony Cascarino backs Everton to sign two strikers for Carlo Ancelotti Could still leave Chelsea for Real Madrid LIVING THE DREAM IN DEMAND 3 Hazard, meanwhile, was missing for Chelsea on Sunday as the Blues suffered a 2-0 defeat at Wembley.The star forward is yet to make his return to the club following an extended break post-World Cup, but is expected back at Cobham training ground on Monday.And, speaking on the Alan Brazil Sports Breakfast, Poyet hinted at his surprise that the Belgian is still with the Premier League club.“After the World Cup it was a massive opportunity for him [for Hazard to join Real Madrid.],” he said.“I don’t know [what will happen with Hazard].“But, what is clear is that the closer to Thursday we get the more expensive the player will be sold for.” moving on targets last_img read more

Men’s Soccer Drops Home Opener to Milwaukee, 2-0

first_img Box Score (PDF) Full Schedule Roster ESPN+ Next Game: Story Links Live Stats UNLV 9/6/2019 – 7:30 PM Photos Preview Watch Live DES MOINES, Iowa — The Drake University men’s soccer team dropped its home-opener to Milwaukee, 2-0, on Monday night at Cownie Soccer Complex. The Panthers drew first blood with a headed goal in the 68th minute before adding another score late in the 90th minute.Drake controlled most of the game, owning 60 percent of the possession and creating a 14-6 advantage in shot attempts, a 5-3 edge in shots on goal, and an 8-2 margin in corner kick opportunities.”I think our performance was very good and deserved more from the game,” Drake head coach Gareth Smith said. “We dominated the game with 60 percent possession and created 14 attempts on goal, which is more than enough for us to win most games. However, we need to be more clinical in the final third. We need to score when we are dominating or we leave the opposition with a chance to get into the game, and that’s what happened tonight.”The Bulldogs created quality opportunities in the box, including a shot from inside the 6-yard box in the 64th minute that rolled just wide left. Austin Smythe was active in his 33 minutes off the bench for Drake, unleashing a game-best four shots and forcing a save on one attempt. Redshirt sophomore goalkeeper Luke Anderson made the second start of his career and was credited with a save.”Tonight was more about our attacking players not executing than our back line conceding,” Smith said. “Outside the action for the goal I thought our back five was very good in managing the counter from Milwaukee. This is a good performance to build on that we need to turn into a positive result.”The Bulldogs return to action with another home game on Friday, Sept. 6 at 7:30 p.m. against UNLV.Print Friendly Versionlast_img read more

Half-time: Chelsea 1 Man Utd 0

first_imgEden Hazard scored against the run of play to put Chelsea ahead at Stamford Bridge, where a victory would take them 10 points clear at the top of the Premier League.Hazard struck eight minutes before half-time when he finished off a fine move by firing past keeper David De Gea.After John Terry got the better of the unimpressive Radamel Falcao near the halfway line, Cesc Fabregas played the ball to Oscar and the Brazilian cleverly back-heeled in to the path of Hazard, who had drifted in from the left.Manchester United had looked the more dangerous side and almost took an early lead when Luke Shaw broke clear on the left and pulled the ball back for Wayne Rooney, who curled a shot just wide of the target.The England forward’s left-footed effort struck the stanchion behind the goal, leaving the visiting fans at the opposite of the end of the ground – and De Gea – briefly believing their team had gone ahead.United, still mathematically in with a chance of winning the title, did most of the early pressing and Paddy McNair’s shot went wide after taking a deflection off Blues skipper Terry.With Diego Costa and Loic Remy still out injured, Didier Drogba is again leading the line for Chelsea, who have Kurt Zouma in midfield and lacked fluency before scoring with their first real chance of the game – Hazard’s 18th goal of the season.Chelsea: Courtois, Ivanovic, Cahill, Terry, Azpilicueta, Zouma, Matic, Oscar, Fabregas, Hazard, Drogba. Subs: Cech, Filipe Luis, Mikel, Ramires, Cuadrado, Willian, Solanke.Follow West London Sport on TwitterFind us on Facebooklast_img read more

Date of Biblical Artifact Corroborated

first_imgIn 1979, a silver scroll was discovered near Jerusalem that contained the text of the priestly benediction known from the Pentateuch (Numbers 6:24-26).  The scroll was dated at the 7th century BC at the time, but doubts remained, some thinking that instead it was from post-exilic times centuries later.  Now, according to a New York Times report by John Noble Wilford echoed in the Oakland Tribune, “researchers at the University of Southern California have now re-examined the inscriptions using space-age photographic and computer imaging techniques,” and concluded that the artifacts indeed date from the pre-exilic period.  The international team used some advanced digital imaging techniques at Jet Propulsion Laboratory to bring out hitherto undetectable fine details in the artifact.This is a small but important piece in a large puzzle of archaeological evidence that supports the historicity of the Pentateuch (the books of Moses).  Liberal scholars and skeptics have claimed that Moses could not have written such books; they assumed the books were compiled much later, after the Babylonian exile.  Artifacts like this show that quotations from the Pentateuch were in common knowledge and circulation centuries earlier.(Visited 5 times, 1 visits today)FacebookTwitterPinterestSave分享0last_img read more

Synthetic Fossils Show Organic Films Can Preserve Quickly

first_img2. Statements regarding controversies about preservation potential that the scientists wished to test:The discovery that melanosomes preserve commonly inexceptional fossils (Vinther et al. 2008; Colleary et al.2015) has opened new avenues of palaeontologicalresearch, but their study has not been without controversy.These structures have alternatively been identifiedas fossil bacteria (Wuttke 1983; Davis & Briggs 1995), aposition still maintained by some (Moyer et al. 2014;Lindgren et al. 2015; Schweitzer et al. 2015). However,this stance has been countered by the fact that microbodiescommonly found in fossil skin, hair and feathersconform to melanosomes in distribution, size and organization(Vinther et al. 2008; Vinther 2015, 2016). Furthermore,chemical analyses show that these structurescontain melanin (Glass et al. 2012, 2013; Lindgren et al.2012, 2014; Colleary et al. 2015; Clements et al. 2016;Gabbott et al. 2016; Brown et al. 2017).In addition, it has been suggested that keratin proteincan preserve organically in fossils (Schweitzer et al. 1999,2015; Edwards et al. 2011; Moyer et al. 2016a, b) and,thus, melanosomes might be obscured by a keratin proteinmatrix (Zhang et al. 2010; Moyer et al. 2014; Panet al. 2016). However, studies have described melanosomesas being exposed on the sediment while nonpigmentedregions yield only rock matrix (Vinther et al.2008; Colleary et al. 2015; Vinther 2015). More recently,studies have argued that the only constituents of keratinoustissues preserved deep in the geological record arecalcium phosphate and pigments (Mayr et al. 2016;Vinther et al. 2016; Saitta et al. 2017a).Experimental taphonomy supports the poor preservationpotential of keratin protein. Previous, non-sedimentencasedmaturation experiments turned keratin into avolatile-rich, water-soluble fluid (Saitta et al. 2017a) whileextracted melanosomes survived largely intact (Collearyet al. 2015). This contrasting behaviour between keratinprotein and melanin during maturation suggests that diageneticdegradation and loss of keratin protein is to beexpected in fossils, leaving behind melanosomes. However,this keratin–melanin dynamic has yet to be experimentallyobserved simultaneously.Similarly, decay-resistant collagenous tissue (Sansomet al. 2010a, b, 2013) is expected to be diageneticallyunstable (Parry et al. 2018), like other proteinaceousorganics (Bada et al. 1999). However, epidermal collagenprotein has been proposed in Mesozoic fossils (Lingham-Soliar et al. 2007), although such claims are debated(Smith et al. 2015; Smithwick et al. 2017).Regarding the specific experiments described here, wehypothesize that tissues containing diagenetically-unstableorganics such as proteins and labile lipids (e.g. keratinous,collagenous, muscle and adipose tissues) will largelybecome degraded and lost into the sediment, while diagenetically-stable organics such as melanin (i.e. melanosomes)will tend to remain with the specimen. If thehypothesized filtering effect of porous sediment on diagenetically-altered organic materials is correct, then experimentalresults from sediment-encased maturation shouldbe expected to resemble fossils such that preserved organicstains consist largely of exposed melanosomes resting onthe sediment with a loss of surrounding tissues. In an attempt to learn about the fossilization process, scientists have found that exceptional fossils don’t require millions of years.Scientists at the University of Bristol are old-earth evolutionists, but what they found by experiment mimicked what can be seen in fossils. How long did it take? One day.Exceptionally-preserved fossils, like those of dinosaur bones and birds with soft-tissue remains in the form of carbon films, have been in the news for the last 20 to 30 years. Mary Schweitzer, in particular, created a stir with her fossils of what looked like intact blood vessels in a T. rex bone. The evidence of elastic tissue under a microscope elicited gasps by host Leslie Stahl of 60 Minutes in 2010 (YouTube). Numerous reports have come in since, showing intact collagen and melanosomes in bird feathers and carbon films thought to be residues of organs and tissues (see footnote 2). Despite their astonishment at these finds, no one in the secular journals or mainstream media ever questions that these fossils really did form many tens of millions of years ago. Creationist radio host Bob Enyart keeps a running list of fossils with soft-tissue remains as evidence against the assumed long ages.Can the conditions that created these exceptional fossils be reproduced in the lab? Researchers have created “synthetic fossils” (artificial taphonomy) in order to test what conditions can reproduce the observed remains. They tried to speed up the fossilization process by applying heat and pressure. These “maturation” experiments have been a staple for organic geochemists, says a press release from the University of Bristol, to help geochemists understand the formation of fossil fuels, or to produce synthetic diamonds.More recently, maturation has been used to study the formation of exceptional fossils that preserve soft tissues as dark, organic films in addition to mineralised tissues like bone, including fossil dinosaurs from China with organically preserved feathers.New work at the University of Bristol by grad student Evan Saitta has mimicked these types of fossils. His team gathered chicken feathers and living birds and lizards, then performed “humane euthanasia” on them by gassing them with CO2 (see footnote 1). When he used the standard maturation processes on his specimens, however, all he got was a “foul-smelling fluid.” He altered the technique by placing the specimens in compressible bentonite clay. This provided an outlet for fluids during the compaction step:Saitta explained: “The sediment acts as a filter allowing unstable molecules to escape from the sample, revealing browned, flattened bones surrounded by dark, organic films where soft tissues once were.“These results closely resemble exceptional fossils, not just visually, but also microscopically as revealed using a scanning electron microscope.”Microscopic, pigment-bearing structures called melanosomes reside within the organic films in feathers and lizards treated with the new method while unstable protein and fatty tissues degrade and are lost, just as in exceptional fossils which have been used by scientists such as Vinther to reconstruct the original colours of dinosaurs.The methods described in the paper in Palaeontology say that the experiment ran for 12 to 23 hours – less than one day (see footnote 1).The researchers say the new method of sediment filtration represents an improvement upon earlier maturation experiments and will allow for the testing of many hypotheses regarding organic preservation in fossils and sediments.The findings did not change the team’s views about long ages. They still believe fossils like Schweitzer’s fossils formed 60 to 80 million years ago (see footnote 2). But on what basis?One commonly employed experimental approach is known as ‘artificial maturation’, where high heat and pressure accelerate the chemical degradation reactions that normally occur over millions of years when a fossil is buried deep underground and exposed to geothermal heat and pressure from overlying sediment.And yet scientifically speaking, no scientist ever observed the presumed millions of years. What they observed, tested and found only took 23 hours.To back up their claim, the team should repeat the setup without applying heat and pressure, and then wait 68 million years. Then their conclusions might be scientifically supportable.Source paperSediment‐encased maturation: a novel method for simulating diagenesis in organic fossil preservationEvan T. Saitta, Thomas G. Kaye, and Jakob VintherFirst published: 25 July 2018 in Palaeontologyhttps://doi.org/10.1111/pala.12386Data archiving statement: Data for this study are available in the Dryad Digital Repository: https://doi.org/10.5061/dryad.0t67nFootnotes1. from the Method section of the paper:Fresh feathers (Gallus gallus and Meleagris gallopavo fromUK farms) and lizards (Anolis captured from the wild inArizona, USA) were matured shortly after acquisition/humaneeuthanasia via CO2 asphyxiation with their fullrange of tissue composition present (see Saitta et al.(2018) for additional, preliminary results on non-vertebrates).Specimens were buried in easily-compacted bentoniticclay (purchased from Clay Terra; https://clayterra.com/) inside a metal piston and compacted using a hydraulicpress (9–18 tonnes over 126.7 mm2), producing a consolidatedtablet (Fig. 1A). Previous attempts with loosesediment did not produce results macrostructurally comparableto fossils, or amenable to easy structural analysis,indicating that compaction is important in establishingthe desired pore space filtration. Tablets were loaded intoa welded metal tube (19 mm inner diameter), forming anairtight chamber tapped for a high-pressure airline, withthe goal of providing space for the escape of maturationproducts from the sediment (Fig. 1B). The chamberresided inside a ceramic-lined laboratory oven. The airlineexited a hole in the oven and connected a pressure-regulatedair compressor. Experiments ran at 210–250°C/225–300 bars/12–23 h (Saitta et al. 2018) consistent with othermaturation studies of fossilization. (Visited 653 times, 1 visits today)FacebookTwitterPinterestSave分享0last_img read more

An Easy Way to Seal Electrical Boxes

first_imgThe company is very young. Braukmann joined the group in May, and in mid July the company was still waiting for its first shipment of factory-made boxes after exhausting its small supply of samples, some of them made by hand (the shipment has since arrived, and Box Shell’s website lists all three sizes for sale).Box Shell hasn’t spent much on advertising so far and instead has been relying on word-of-mouth and social media. But the reaction among builders so far has been positive, especially when they know what the energy code requires.“They’ve been really intrigued,” Braukmann said. Two architects have come up with an inexpensive way of air-sealing and insulating electrical boxes in exterior walls.After puzzling over the best way of meeting a code requirement for sealed boxes, Bill Hicks and Lucas Schad developed a cardboard form called the Box Shell that wraps around an electrical box. The form is slightly larger than the box, creating a small gap on the sides and a space at the back that is filled with expanding foam to air-seal and insulate.The Box Shell is installed after wiring has been roughed in and before cavity insulation is placed in the wall. After drywall goes up, the installer inserts the nozzle of a can of expanding latex foam between the electrical box and the form and fills the gap around the box and the space behind it with foam. It’s the foam, not the box itself, that creates the seal.The company offers the shells in three sizes — for single, double and triple junction boxes — all under $2 a pop.Schad and Hicks both work for LTS Architecture, Schad in Livingston, Montana, and Hicks in Minnesota.Brie Braukmann, Box Shell’s product manager, said the pair was looking for a way to comply with a provision of the 2012 International Energy Conservation Code requiring sealed electrical boxes in exterior walls. Although there are other products on the market for sealing boxes, they are either more difficult to install, more expensive, or don’t provide as effective a seal, Braukmann said. RELATED ARTICLES Air Leakage at Electrical Switches and OutletsGBA Product Guide: Airfoil Airtight Receptacle BoxesGBA Product Guide: Energy BlockService Cavities for Wiring and PlumbingQ&A: Airtight electrical boxeslast_img read more

Choosing a New HVAC System

first_imgGetting accurate heating load estimates“Manual J” is a protocol developed by the Air Conditioning Contractors of America to produce accurate estimates of peak heating and cooling demands based on the characteristics of a particular house. The procedure is widely recommended, but Dorsett says that HVAC contractors rarely use it and, he adds, “only a fraction of those will perform [it] correctly.”It would be better if Jill hired a RESNET rater or an engineer. Or, he adds, Jill could use previous gas bills and weather history data to calculate whole-house heating loads herself, a process he describes as “not very time consuming.” (For more on how to do that, read this article.)“In a zone 5B climate with ‘a lot of southwest glass for passive heat,’ the fuel-use load calculation may hit somewhat to the low side,” Dorsett says, “but not more than 20% unless the house had been meticulously designed for solar tempering, including optimizing the specifications for the low-e coating. Run the fuel-use load calculation, see how it stacks up against the Cool Calc freebie numbers. The fuel-use load numbers will almost certainly come in substantially lower, no matter what reasonable heating-degree day (HDD) base temperature is used.” Jill has been looking around for an HVAC contractor but so far hasn’t settled on one. “I’m not getting great proposals,” she says. One refused to do Manual J and Manual D calculations, which are typically recommended as the necessary first step to specifying HVAC equipment. Another is willing to take Jill’s suggestions, but doesn’t seem to know which system would be the most energy-efficient.In other words, she’s stuck, and that’s that’s the story behind this Q&A Spotlight. Using the furnace fan for filtrationOne of Jill’s goals is to have an efficient furnace fan that would be used to mix air in the house as well as provide some filtration. Her thermostat has a setting that runs the fan for about 10 minutes an hour at a less-than-maximum speed. It doesn’t increase her power bill significantly, and it seems to help with Jill’s seasonal allergies.But, Dorsett warns, no matter how efficient the furnace fan might be, using it that way is “extremely inefficient.” Instead, he suggests a heat-recovery ventilator set up to recirculate air would be more appropriate.He adds that modulating ducted heat pumps are probably not the answer, either. Most don’t have extended temperature capacity tables that go below -4°F, he says, and many don’t go that low.“They also don’t have turn-down ratios more than about 2.5:1 (at minimum speed they’re still delivering fully 40% of what it would deliver at maximum speed, no matter how many incremental steps it has), so very accurate load calculations and careful sizing is required for them to hit their high HSPF and SEER efficiency numbers,” Dorsett says.Plus, he says, the air handler for a ducted heat pump uses 10 times more electricity than an HRV in recurculation mode. “So even running a 100% duty cycle on the HRV uses less power than cycling the heat pumps air handler for 10 minutes per day.” Yes, a ductless minisplit could handle the coldOne key question is whether a ductless minisplit would be capable of heating Jill’s house in the dead of winter without some type of backup heat. On that issue, Holladay has no doubt she would be fine: “The contractors who are telling you that Climate Zone 5 is too cold for ductless minisplits are not telling the truth.”Dana Dorsett adds that it’s possible to heat with minisplits even when the temperature drops to 25 below zero Fahrenheit. In Climate Zone 5B, he says, a correctly sized minisplit can equal the seasonal efficiency of a ground-source heat pump.Several years ago, he writes, the Northwest Energy Efficiency Alliance monitored the performance of minisplits in Climate Zones 4C to 6B and found that even older designs functioned well, performing with an average COP of nearly 3. (There’s more on that study here.)“The typical name-plate HSPF (heating seasonal performance factor) of those units of old was about 10.0 Btu/watt-hour,” Dorsett says. “Current model ductless minisplits designed for cold climates are now testing in the HSPF 13s and 14s. If the units are sized optimally, you should be able to beat the efficiency performance of the field survey units monitored by the NEEA in the 2010-2011 time frame.”He adds that living in a “B” zone (a dry region of the country in the West) means that a heat pump would use less energy in defrost cycles. And there’s little or no latent cooling load.Adds Calum Wilde: “Climate Zone 6A here. We had close to two weeks of approximately 0-5°F. My ductless minisplits worked great, they easily kept the house at 68°F.” RELATED ARTICLES Let’s do the mathIn replying to a question from GBA editor Martin Holladay, Jill says that the cost of electricity in her area is about 10 cents per kilowatt-hour, while gas is between 47 cents and 50 cents a therm. Based on those numbers, Holladay says, the most economical choice will be natural gas. In a furnace running at 80% efficiency, 100,000 Btu of energy would cost 63 cents. That compares with 98 cents for a heat pump with a coefficient of performance of 3, and $1.47 for a heat pump with a COP of 2.“When it comes to cost, gas wins,” Holladay says.Gas, however, isn’t Jill’s first choice even if it’s less expensive than other options now.“Gas won’t be cheap forever and doesn’t play well with solar (planned, none yet),” she says, “and [it] supports fracking (a problem in my area).”Instead, she wonders whether a heat pump with an inverter, capable of running at different speeds, or a Trane modulating furnace might be a better answer. Saving Energy With Manual J and Manual DHow to Perform a Heat-Loss Calculation — Part 1How to Perform a Heat-Loss Calculation — Part 2Calculating Cooling LoadsWho Can Perform My Load Calculations?Out With The Old, In With The NewGreen Basics: Green Heating OptionsHow To Buy a Ductless MinisplitRules of Thumb for Ductless MinisplitsJust Two Minisplits Heat and Cool the Whole HouseReport on Our Ductless Minisplit Heat Pump Our expert’s viewGBA technical director Peter Yost added these thoughts:Three of the conditions mentioned by Jill D strike me as important:Lots of southwest-facing glass that creates problems in the summer.A desire to filter indoor air with the HVAC system.The fact there are three distinct heating and cooling zones in the house.Jill D has a tall order. She wants to improve HVAC efficiency, deal with summertime solar gain, improve air quality, configure new systems so they can accommodate a photovoltaic system in the future, and integrate domestic hot water, if possible. The only conditioning not included in this mechanical system Rubik’s cube is dehumidification.It would be hard enough to solve this entire puzzle in new construction; in a retrofit, it’s just too much. Here are my suggestions:Keep looking for a qualified HVAC contractor or mechanical engineer. Your project seems well beyond the skills of the folks you’ve been dealing with so far.Tackle the issue of domestic hot water separately.Address summertime solar gain with shading. This is particularly true in a dry climate.Address air quality with a whole-house mechanical ventilation system. It’s hard to deal with allergies without whole-house mechanical ventilation. (For more information, see this article by Brian Just. It’s possible to use CO2 levels as a proxy for indoor air quality.)Stick with ductless minisplits as a solution to your three-zone problem.I hate to end with something that might seem like a crackpot idea, but I’d like to think that somewhere out there you could find a high-efficiency, cold-climate, air-to-water heat pump system that will integrate hydronic space heating, domestic hot water, and (at least for some of Climate Zone 5B) even space cooling. It might be something along the lines of this new unit from Nordic Heat Pumps. I have heard whispers of this and am pursuing it; but so far, I have nothing solid to share. Stay tuned. Jill D has done her homework, and now it’s time to choose a new heating and cooling system for her Climate Zone 5B home.There are three distinct zones to consider: the main house, a sunroom addition, and an office addition. Neither the office nor the sunroom is ducted, although heating and cooling loads there are relatively low. In the main house, the heating load has been calculated at between 28,000 and 36,000 Btu per hour, and the cooling load at between 24,000 and 36,000 Btu per hour.Jill’s existing furnace, which she estimates is 10 years old, is a 115,000 Btu/h variable-speed unit. Cooling is provided by a pair of 1-ton minisplits that have proved expensive to run. The existing water heater is near the end of its life.What Jill has in mind is efficient central cooling with a blower that can run in circulation mode for filtration and to even out temperatures around the house. She’d like a system that’s sized correctly so it doesn’t cycle on and off frequently, and something that will provide cooling in her office.“I’ve thought about minisplits or just an electric heat pump,” she writes in a post in the Q&A Forum, “but everyone says the climate is just a little cold with no backup heat and that minis are the most expensive option. There is a lot of southwest glass for passive heat in the winter but it’s problematic for summer.”last_img read more