Dense-Packed Cellulose and a Wrong-Side Vapor Barrier

first_img Start Free Trial Already a member? Log in Does the exterior sheathing on a double-stud wall accumulate worrisome quantities of moisture in late winter? Several researchers are now looking into this question, and Green Building Advisor has been sharing the researchers’ findings as the information becomes available.The latest sheathing moisture measurements were made by Bill Hulstrunk, the technical manager at National Fiber in Belchertown, Massachusetts. I’d like to put an important piece of information on the table from the start: Hulstrunk is not a disinterested academic researcher; he is employed by a company that sells cellulose insulation. Clearly, his company is more inclined to share data showing that walls insulated with cellulose are performing well, and might not want to share any data that imply otherwise. That said, some of Hulstrunk’s data are thought-provoking.Hulstrunk shared his moisture content readings in a presentation (“Hygrothermal Analysis of Superinsulated Assemblies”) at the Passive House conference in Portland, Maine, on September 22, 2014. His co-presenter was builder Chris Corson of EcoCor Construction.Hulstrunk began his presentation by lauding the hygroscopic properties of cellulose. “Hygroscopic materials want to redistribute and equalize the moisture,” he said. “Hygroscopic materials like cellulose protect themselves and nearby materials. They can pull moisture out of nearby materials like sheathing and studs.”Hulstrunk also provided a few cautionary statements about cellulose density. “Deep cavities require that cellulose be installed at higher densities,” he said. “I recommend 3.7 pounds per cubic foot for a 12-inch cavity or 4 pounds per cubic feet for an 18-inch cavity. Deeper cavities require more experienced installers, since multiple hose passes are required.” (For more information on this topic, see How to Install Cellulose Insulation.)Bill Hulstrunk set out to visit a number of homes with thick double-stud or I-joist walls insulated with dense-packed cellulose, including several homes built by Chris Corson. “WUFI predicts that… Sign up for a free trial and get instant access to this article as well as GBA’s complete library of premium articles and construction details.center_img This article is only available to GBA Prime Memberslast_img read more

Grand Alliance’s Supaul nominee fights local ire, RJD fire

first_imgFor the Mahagathbandhan (Grand Alliance) candidate and All India Congress Committee secretary Ranjeet Ranjan, retaining the Supaul Lok Sabha seat this time appears to be a tough challenge as discontentment among leaders of alliance partner Rashtriya Janata Dal and resentment among local people are running high against her.Though the State’s Grand Alliance leaders are trying to dispel the “confusion and chaos” against Ms. Ranjan, her fight against NDA candidate Dileshwar Kamait, contesting on a Janata Dal (United) ticket, seems evenly poised. Supaul goes to poll in the third phase on April 23. In the 2014 Lok Sabha poll, Ms. Ranjan had defeated Mr. Kamait by over 55,000 votes and the then BJP candidate, Kameshwar Chaupal, had finished third. “In this election, the JD(U) and BJP votes have got combined against the Congress candidate and she will have to struggle hard to retain the seat,” said Maheshwar Yadav, a businessman from Pipra. Besides, he added, “The issue of Balakot air strike and nationalism too runs high among the young voters.”RJD vote bank In the last election, Ms. Ranjan had won with the support of the RJD vote bank. However, this time the local RJD leaders are not keen to support Ms. Ranjan as her husband Rajesh Ranjan alias Pappu Yadav, the sitting MP from the neighbouring constituency of Madhepura, is contesting from there as an Independent candidate.The RJD leaders of Supaul want him to withdraw his nomination in favour of the Mahagathbandhan candidate from the seat, Sharad Yadav. “How can we support Ranjeet Ranjan here in Supaul when her husband is contesting against our candidate in Madhepura? As a reciprocal gesture, Pappu Yadav should withdraw his nomination from Madhepura, otherwise we will remain silent and neutral,” said a local RJD leader.Earlier, an RJD MLA from Pipra and party’s district president Yaduvansh Yadav had threatened to file his nomination as an Independent candidate against Ms. Ranjan but later, after the intervention of RJD and Congress leaders, he agreed to drop the plan.Message to Pappu YadavSources in the local RJD told The Hindu that the RJD MLA was acting at the behest of the party’s top leadership to send a message to Mr. Pappu Yadav to “remain in his limits”. The Madhepura MP has relentlessly attacked RJD leader Tejashwi Yadav and party chief Lalu Prasad. “Though the local RJD leaders and supporters are not opposing Ranjeet Ranjan, they have become silent and neutral,” said Ramadhin Yadav of Supaul bazaar area.Supaul Lok Sabha constituency has a sizeable number of Yadav and Extremely Backward Class voters.The Congress nominee is also grappling with the resentment of the local people who complain about her absence from the constituency. “After winning the poll last time she settled down in Delhi. She hardly visited here to know about our problems,” rued voters of Triveniganj, Chhatapur and Pipra areas. But they also admitted that Ms. Ranjan has been working hard to retain the seat. “Let’s see what happens,” they said.“Initially there was an attempt to create confusion among the Grand Alliance rank and file after Pappu Yadav refused to reconsider his nomination [from Madhepura], but things became smooth after the intervention of senior leaders from the RJD and the Congress,” State Congress president Madan Mohan Jha told journalists recently.Ms. Ranjan too exuded confidence that she was getting “full cooperation” from the local RJD leaders and said they too have been given key poll responsibilities.last_img read more

Gov’t To Intensify Campaign against Human Trafficking

first_img Minister of Justice, Hon. Delroy Chuck, says the Government will be intensifying its public education against human trafficking this year.He said the campaign will be “more aggressive”, especially in rural areas where persons are deemed to be more at risk.“We will also focus on targeted interventions for vulnerable groups,” he pointed out.The Minister was speaking at the handover of a bus to the anti-Trafficking in Persons (TIP) Unit of the Jamaica Constabulary Force (JCF) at the Ministry’s offices at 61 Constant Spring Road in St. Andrew on June 1.He urged Jamaicans to be on alert for signs of human trafficking.“Pay more than the usual attention to children, who might be victims of forced begging; entities or individuals of dubious character, who are recruiting persons as models to work overseas or in massage parlours, nightclubs,” he said.Minister Chuck noted that most of the victims of human trafficking are women and minors, and appealed to parents and guardians to talk with your children about how to make wise decisions and to protect themselves.“It is disheartening to hear of reports of human trafficking, and in particular sexual slavery, where women, mostly young and oftentimes minors, are tricked into prostitution and even gang-raped,” he pointed out.He noted that the simple caution ‘don’t talk to strangers’ should also apply in the use of social media platforms.“Do not give information about yourself and your family that can be used to harm you. Most importantly, do not agree to meet anyone whom you have met on social media,” he advised.Minister Chuck noted human trafficking takes a tremendous toll on the victims,   noting that it takes years for them to recover from the mental and physical trauma.“Sometimes they don’t, because of the horrific experiences associated with human trafficking,” he pointed out.He said the Government is strengthening the support system for victims through the establishment of shelters and providing psychological support.Meanwhile, he informed that the anti-TIP policy is expected to be completed this fiscal year and thanked the United Nations Development Programme (UNDP) for providing the necessary funding support for the six-month consultancy to develop the policy.Minister of National Security, Hon. Robert Montague, said the Government will continue to undertake coordinated approaches in addressing human trafficking.“This Government, the Ministry of National Security and other stakeholders collaboratively reject human trafficking as a violation of the fundamental rights to freedom and security of the person,” he said.He urged all law-abiding citizens to use the Stay alert App to anonymously report suspicious incidents.The 16-seater Toyota provided to the TIP Unit was acquired at a cost of approximately $6 million by the Ministry of Justice.It will assist in the ongoing fight against human trafficking, and transport victims that have been rescued. Minister of Justice, Hon. Delroy Chuck, says the Government will be intensifying its public education against human trafficking this year. Story Highlights Minister Chuck noted that most of the victims of human trafficking are women and minors, and appealed to parents and guardians to talk with your children about how to make wise decisions and to protect themselves. The 16-seater Toyota provided to the TIP Unit was acquired at a cost of approximately $6 million by the Ministry of Justice.last_img read more

Port of Virginia Wraps Up StackYard Works at VIG

first_imgzoomImage Courtesy: Port of Virginia, VIG The Virginia International Gateway (VIG) has completed another step in its expansion project as it launched operations at its container stack No. 1.The end of the stack-yard work leaves only two projects to be completed before the entire USD 320 million effort comes to a close in June, according to the Port of Virginia.“This new capacity is quickly being integrated into the operation and the Port of Virginia is beginning to see positive results,” said John F. Reinhart, CEO and executive director of the Virginia Port Authority.With the completion of stack No. 1, the terminal now has 13 additional container stacks, each served by two new rail-mounted gantry cranes (RMGs). The new stacks compliment 15 existing stacks, also served by RMGs.Those stacks are on a schedule to be refurbished throughout the year with two stacks complete and three underway.The expansion has doubled the terminal’s annual container throughput capacity, according to the port authority, as VIG can now process 1.2 million container lifts a year.The expanded stack-yard is being combined with four new ship-to-shore cranes and 800 additional feet of berth space.“In February 2017, we started work on what was a green-field site — we started from scratch – and now we are just a few months from completion,” Reinhart said.Once completed, the VIG expansion is expected to increase the port’s overall annual container capacity by 40 percent, or 1 million container units, by 2020.last_img read more

Weakened metabolism of immune T cells may account for serious complications in

Source:https://hms.harvard.edu/news/graying-t-cells Reviewed by James Ives, M.Psych. (Editor)Dec 14 2018The elderly suffer more serious complications from infections and benefit less from vaccination than the general population. Scientists have long known that a weakened immune system is to blame but the exact mechanisms behind this lagging immunity have remained largely unknown.Now research led by investigators at Harvard Medical School suggests that weakened metabolism of immune T cells may be partly to blame.The findings, published Dec. 10 in PNAS and based on experiments in mouse immune cells, pinpoint a specific metabolic pathway called one-carbon metabolism that is deficient in the aged T cells of rodents. The work also suggests possible ways to restore weakened immune function with the use of small-molecule compounds that boost T cell performance.”We believe our findings may help explain the basic malfunction that drives loss of immune defenses with age,” said senior study author Marcia Haigis, professor of cell biology in the Blavatnik Institute at Harvard Medical School. “If affirmed in further studies, we hope that our findings can set the stage for the development of therapies to improve immune function.”The role of T cells in the immune system is twofold: attacking illness-causing cells like bacteria, viruses and cancer and “remembering” past invaders–the body’s way of ensuring that it can spot a threat and mount a rapid defense during subsequent encounters with the same pathogens. In a healthy person, T cells circulate in the blood and quietly scan the body for threats using proteins on the cell’s surface. If a T cell encounters another cell it deems dangerous, the T cell undergoes activation, a molecular cascade in which it switches from surveillance mode to attack mode. The activated cells then rapidly replicate to build an army and destroy the enemy.First, the researchers looked for overall differences between old and young T cells. They isolated T cells from the spleens of young and old mice and noticed that, in general, older mice had fewer T cells. Next, to gauge the cells’ immune fitness, the researchers activated the T cells by mimicking signals normally turned on by pathogens during infection. The older T cells showed diminished activation and overall function in response to these alarm signals. Specifically, they grew more slowly, secreted fewer immune-signaling molecules and died at a much faster rate than young T cells. The researchers also observed that aged T cells had lower metabolism, consumed less oxygen and broke down sugars less efficiently. They also had smaller than normal mitochondria, the cells’ power-generators that keep them alive.Related StoriesTrends in colonoscopy rates not aligned with increase in early onset colorectal cancerLiving with advanced breast cancerResearchers identify gene mutations linked to leukemia in children with Down’s syndromeIt was as if these older immune cells had lost their “appetite” and their ability to process fuel into energy, Haigis and her colleagues observed.To pinpoint the metabolic pathways behind this malfunction, the scientists analyzed all the different proteins in the cells, including those that might be important for coaxing a T cell from dormancy into a fighting state. The team found that the levels of some 150 proteins were lower-than-normal upon activation of the aged T cells, compared with young T cells. About 40 proteins showed higher than normal levels in aged versus young T cells. Many of these proteins have unknown functions, but the researchers found that proteins involved a specific type of metabolism, called one-carbon metabolism, were reduced by nearly 35 percent in aged T cells.One-carbon metabolism comprises a set of chemical reactions that take place in the cell’s mitochondria and the cell cytosol to produce amino acids and nucleotides, the building blocks of proteins and DNA. This process is critical for cellular replication because it supplies the biologic material for building new cells.The team’s previous work had shown that one-carbon metabolism plays a central role in supplying essential biological building blocks for the growing army of T cells during infection. So, the scientists wondered, could adding the products of this pathway to weakened T cells restore their fitness and function?To test this hypothesis, the team added two molecules–formate and glycine, the main products of one-carbon metabolism–whose levels were markedly reduced in aged T cells. Indeed, adding the molecules boosted T cell proliferation and reduced cell death to normal levels.The researchers caution that while encouraging, the effects were observed solely in mouse cells in lab dishes rather than in animals and must be confirmed in further experiments. read more

Tips for staying safe in water during summer

first_img Source:University of Texas Health Science Center at Houston Taking the time to follow some basic precautions will keep you and your loved ones safe in the water all summer long.”Gabriella Cardone, MD, an emergency medicine pediatrician with McGovern Medical School at UTHealth and attending physician at Children’s Memorial Hermann Hospital Before engaging in aquatic activities, make sure everyone knows how to swim or has an approved life jacket. Water noodles, inner tubes, or water wings do not count.Tragically, there are approximately 3,536 fatal unintentional drownings in the U.S. every year, which is an average of 10 deaths a day, according to the Centers for Disease Control and Prevention.”Children should learn how to swim by age 4 and their parents should learn cardiopulmonary resuscitation or CPR in case of emergency,” Cardone said.Cardone, a mother of three, said children can be taught how to float as early as at 1 year of age. “If you are planning a summer trip to a lake or beach, schedule swimming lessons for your children ahead of time,” she said.Regardless of whether they can swim, children need to be monitored constantly. “They need your undivided attention. No talking on the smartphone. No checking social media. And, absolutely no drinking,” she said.Mom and dad should not swim alone either. “Even excellent swimmers need companions,” she said. “Call it the buddy system.”There are additional precautions. If you are going to a pool, keep children away from an exposed suction outlet (drain). At the beach, keep everyone out of the water if there is a strong current or undertow.Swimmers should stay in the designated areas with lifeguards, always enter the water feet first, and know when and how to call 911.Related StoriesResearchers identify gene mutations linked to leukemia in children with Down’s syndromeBordeaux University Hospital uses 3D printing to improve kidney tumor removal surgeryRevolutionary gene replacement surgery restores vision in patients with retinal degenerationWater shoes are a good idea at the beach and pool. It’s easy to step on a sea urchin or stingray in the ocean, or broken glass at a pool. It is a good idea to keep a first-aid kit handy and your tetanus shot up to date.Take into consideration whether someone is healthy enough for an aquatic activity.”If you have an open wound or a weakened immune system, you may want to stay out of the water. That’s because you may have a heightened risk of infection,” Cardone said.Conversely, if you have diarrhea, wait at least a week before using public pools or hot tubs to avoid spreading an infection. Also, make sure children go to the bathroom before swimming. Shower with soap and water before entering a pool.Tiny microbes in water can cause recreational waterborne illnesses, said Cynthia Chappell, PhD, a professor of Epidemiology, Human Genetics, and Environmental Sciences with UTHealth School of Public Health.When the levels of bacteria (E. coli) and viruses (norovirus) rise, your risk of diarrhea and infections of the skin, eyes, ears, and lungs rises, too.As if that is not bad enough, there are also parasites in the water. The most common are cryptosporidium and giardia, and they are spread by swallowing, breathing, or having contact with contaminated water.”The good news is that chlorine kills bacteria in a pool. The not-so-good news is the cryptosporidium is becoming resistant to the levels of chlorine used in pools and water parks,” Chappell said.As for the ocean, officials monitor the quality of seawater and issue alerts if there is cause for concern, such as increased bacterial counts or algal blooms.”Your best bet is to stick to well-maintained pools and well-monitored beaches,” Chappell said.You can have a great time in the water this summer. You just have to take a few precautions.center_img Reviewed by Kate Anderton, B.Sc. (Editor)May 24 2019Beaches, lakes, and pools are great ways to beat the summer heat but there are precautions to take before reaching for that swimsuit, report physicians with The University of Texas Health Science at Houston (UTHealth).last_img read more

Tesla to pay off 920M in bonds with company cash

first_img The electric car and solar panel company and debt holders had the option of converting the bonds to stock if the price hit an average of $359.87 over several trading periods ahead of Friday’s maturity date.But that didn’t happen. Shares haven’t closed that high since Dec. 14, and they have traded around $300 during the time the debt could be converted.Tesla says in its annual report that intends to pay the debt in cash. The company had $3.7 billion at the end of last year.The payment won’t reduce the cash to a troublesome level, at least not yet, but Tesla has billions more in debt due in the coming years, said Morningstar analyst David Whiston. “They’ll clearly have to generate more cash,” he said.Whiston said the company may need more cash generated from another new model to retire debt that comes due during the next four years. Tesla has planned to start building its Model Y small SUV in high volumes by the end of next year.A Tesla spokesman declined comment on the payment, deferring to the company’s earnings release that said the company has “sufficient cash on hand to comfortably settle in cash our convertible bond that will mature in March 2019.”Tesla has been adding cash since production and sales of its Model 3 midsize sedan grew during the second half of last year. The company’s fourth-quarter investment letter says the cash balance increased by $718 million from October through December.Tesla had about $11 billion in debt at the end of 2018, including $566 million worth of notes that come due in November and a $1.1 billion credit line that’s due in June of 2020. There also are $1.38 billion notes that mature in March of 2021 and another $978 million due in March of 2022.Whiston said the company may have to raise more capital by selling shares, or it could refinance the debt. © 2019 The Associated Press. All rights reserved. Tesla Inc. will pay off $920 million worth of bonds when they come due on Friday, using up about one quarter of the cash available for capital spending and future debt payments. Analysts expect Tesla 2Q revenue gain but big net loss Explore further This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Citation: Tesla to pay off $920M in bonds with company cash (2019, February 27) retrieved 17 July 2019 from https://phys.org/news/2019-02-tesla-920m-company-cash.htmllast_img read more

The Worlds Largest Iceberg Is 2 Years Old Today and Already Drifting

first_img Photo Gallery: Antarctica’s Pine Island Glacier Cracks Iconic Photos of Earth from Space They grow up so fast. The iceberg called A68 — currently the largest iceberg in the world, weighing about 1.1 trillion tons (1 trillion metric tons) — calved off Antarctica’s Larsen C Ice Shelf on July 12, 2017, two years ago today. What has this massive, frozen toddler been up to since it broke free? Mostly just spinning. As you can see in this awesome time-lapse footage taken over the last 18 months by the European Space Agency’s Sentinel-1 satellites, and shared today by glaciologist Adrian Luckman, the hulking glacier has been steadily spinning away from its native ice shelf, drifting north about 155 miles (250 kilometers) from where it began. According to Luckman, that’s some impressive mobility for arguably the largest free-moving object on Earth. [Images of Melt: Earth’s Vanishing Ice]Headbutting Tiny Worms Are Really, Really LoudThis rapid strike produces a loud ‘pop’ comparable to those made by snapping shrimps, one of the most intense biological sounds measured at sea.Your Recommended PlaylistVolume 0%Press shift question mark to access a list of keyboard shortcutsKeyboard Shortcutsplay/pauseincrease volumedecrease volumeseek forwardsseek backwardstoggle captionstoggle fullscreenmute/unmuteseek to %SPACE↑↓→←cfm0-9接下来播放Why Is It ‘Snowing’ Salt in the Dead Sea?01:53 facebook twitter 发邮件 reddit 链接https://www.livescience.com/65929-worlds-largest-iceberg-drifting-toward-death.html?jwsource=cl已复制直播00:0000:3500:35  “At 100 miles (160 km) long by only a couple of hundred meters thick, the aspect ratio of Iceberg A68 is more like a credit card than a typically imagined iceberg,” Luckman, a professor at Swansea University in the UK, wrote on his website. “All the more surprising then, that despite grounding on the sea floor several times, Iceberg A68 remains in pretty much the same shape that it had when it calved away 2 years ago.” Alas, every step forward is a step away from home — and toward certain doom. While iceberg A68 continues to pirouette in a current called the Weddell Gyre (named for Antarctica’s Weddell Sea), it moves ever closer to the pull of the South Atlantic Ocean, where it will be gently swept northward to warmer climes. Many icebergs that find themselves on this path (part of an oceanic conveyor belt known as “iceberg alley,” according to BBC News) end up screeching to a halt near South Georgia Island, a remote British Overseas Territory about 1,000 miles (1,600 km) north of Antarctica. Icebergs of similar size to A68 have drifted for 5 years before making landfall, splitting into ever smaller chunks along the way. Other bergs drift farther north, ultimately melting near South America. While A68’s fate is largely up to the whims of the Atlantic Ocean at this point, scientists will continue monitoring the frigid tot’s progress from space as long as they can. Visually, it may not be as interesting as a square iceberg or coffin iceberg, but A68 still our iceberg — and we’ll be proud of it no matter how it dies. In Photos: Antarctica’s Larsen C Ice Shelf Through Time Originally published on Live Science.by Taboolaby TaboolaSponsored LinksSponsored LinksPromoted LinksPromoted LinksYou May LikeVikings: Free Online GamePlay this for 1 min and see why everyone is addicted!Vikings: Free Online GameUndoTruthFinder People Search SubscriptionOne Thing All Liars Have in Common, Brace YourselfTruthFinder People Search SubscriptionUndoFinance101What Are The Best States To Retire In?Finance101UndoAncestryThe Story Behind Your Last Name Will Surprise YouAncestryUndoNucificTop Dr. Reveals The 1 Nutrient Your Gut Must HaveNucificUndoCNETMeet the US Navy’s new $13 billion aircraftCNETUndolast_img read more

US Ambassador to visit Tripura tomorrow

first_imgdiplomacy SHARE SHARE EMAIL Kenneth Juster, US Ambassador to India (file photo)   –  PTI Kenneth Juster, US Ambassador to India, will visit Tripura on October 11. This is his first visit to the North Eastern State since taking charge in November last year.Juster is the second US Ambassador after Richard Verma to visit any North-East state. Verma had been to the North-East in 2016.According to a media advisory issued by The US Consulate General Kolkata, Juster will visit the Neermahal Palace in Tripura, followed by a trip to the State Museum later in the day.In the evening, he will visit the India-Bangladesh border at Akhaura to observe the Beating Retreat Ceremony there. 0 COMMENT SHARE October 10, 2018 COMMENTS Published on Tripuralast_img read more