Title: CDC Revises Death Estimates From Flu
Category: Health News
Created: 8/26/2010 2:10:00 PM
Last Editorial Review: 8/27/2010 12:00:00 AM

Title: Bird Flu Detection Takes a Novel Turn
Category: Health News
Created: 8/26/2010 2:10:00 PM
Last Editorial Review: 8/27/2010 12:00:00 AM

Title: Could Your Genes Influence How You Vote?
Category: Health News
Created: 8/27/2012 4:05:00 PM
Last Editorial Review: 8/28/2012 12:00:00 AM

Title: Kids With Neurological Conditions at Higher Risk of Flu Death: CDC
Category: Health News
Created: 8/29/2012 10:05:00 AM
Last Editorial Review: 8/29/2012 12:00:00 AM

Title: Spinal Fluid Test May Aid Early Detection of Parkinson's Disease
Category: Health News
Created: 8/27/2013 9:35:00 AM
Last Editorial Review: 8/27/2013 12:00:00 AM

Title: Terms Docs Use Can Influence Patients' Cancer Choices
Category: Health News
Created: 8/26/2013 4:36:00 PM
Last Editorial Review: 8/27/2013 12:00:00 AM

Title: Scientists Get Closer to Long-Lasting Flu Vaccine
Category: Health News
Created: 8/24/2015 12:00:00 AM
Last Editorial Review: 8/25/2015 12:00:00 AM

Title: Flu Vaccine Protects Nursing Home Residents, Study Finds
Category: Health News
Created: 8/25/2015 12:00:00 AM
Last Editorial Review: 8/26/2015 12:00:00 AM

Title: Flu Vaccines Offer About 6 Months of Protection, Study Finds
Category: Health News
Created: 8/26/2015 12:00:00 AM
Last Editorial Review: 8/27/2015 12:00:00 AM

Title: China Withholding H7N9 Bird Flu Virus Samples From U.S.
Category: Health News
Created: 8/31/2018 12:00:00 AM
Last Editorial Review: 8/31/2018 12:00:00 AM

Title: Flu Shots for Kids Protect Everybody, Study Shows
Category: Health News
Created: 8/21/2020 12:00:00 AM
Last Editorial Review: 8/24/2020 12:00:00 AM

Title: Just Like COVID, Severe Flu Can Trigger Heart Crises
Category: Health News
Created: 8/25/2020 12:00:00 AM
Last Editorial Review: 8/25/2020 12:00:00 AM

Title: Flushing a Public Toilet? Be Sure to Wear a Mask
Category: Health News
Created: 8/24/2020 12:00:00 AM
Last Editorial Review: 8/25/2020 12:00:00 AM

Title: Flu Virus Can Travel on Dust. Can Coronavirus?
Category: Health News
Created: 8/26/2020 12:00:00 AM
Last Editorial Review: 8/27/2020 12:00:00 AM

Title: Flu, Pneumonia Vaccines Save Lives of Heart Failure Patients: Study
Category: Health News
Created: 8/28/2020 12:00:00 AM
Last Editorial Review: 8/28/2020 12:00:00 AM

Title: How Can I Dry Up Fluid in My Inner Ear?
Category: Diseases and Conditions
Created: 11/8/2021 12:00:00 AM
Last Editorial Review: 6/29/2022 12:00:00 AM

Title: Metronidazole (Flagyl) vs. Fluconazole (Diflucan)
Category: Medications
Created: 11/27/2018 12:00:00 AM
Last Editorial Review: 8/24/2022 12:00:00 AM

Title: GERD (Acid Reflux) in Infants and Children
Category: Diseases and Conditions
Created: 1/31/2005 12:00:00 AM
Last Editorial Review: 8/18/2022 12:00:00 AM

Title: CDC Panel Urges Seniors to Get New, More Potent Flu Shot This Fall
Category: Health News
Created: 6/23/2022 12:00:00 AM
Last Editorial Review: 6/23/2022 12:00:00 AM

Title: Cold, Flu, Allergy Treatments
Category: Diseases and Conditions
Created: 9/24/1999 12:00:00 AM
Last Editorial Review: 7/15/2022 12:00:00 AM

Title: Australia's Current Flu Season Is Tough: Will America's Be the Same?
Category: Health News
Created: 8/4/2022 12:00:00 AM
Last Editorial Review: 8/5/2022 12:00:00 AM

Influenza A virus (IAV) is one of the leading causes of respiratory infections. The lack of efficient anti-influenza therapeutics requires a better understanding of how IAV interacts with host cells. Alveolar macrophages are tissue-specific macrophages that play a critical role in lung innate immunity and homeostasis, yet their role during influenza infection remains unclear. First, our review highlights an active IAV replication within alveolar macrophages, despite an abortive viral cycle. Such infection leads to persistent alveolar macrophage inflammation and diminished phagocytic function, alongside direct mitochondrial damage and indirect metabolic shifts in the alveolar micro-environment. We also discuss the "macrophage disappearance reaction", which is a drastic reduction of the alveolar macrophage population observed after influenza infection in mice but debated in humans, with unclear underlying mechanisms. Furthermore, we explore the dual nature of alveolar macrophage responses to IAV infection, questioning whether they are deleterious or protective for the host. While IAV may exploit immuno-evasion strategies and induce alveolar macrophage alteration or depletion, this could potentially reduce excessive inflammation and allow for the replacement of more effective cells. Despite these insights, the pathophysiological role of alveolar macrophages during IAV infection in humans remains understudied, urging further exploration to unravel their precise contributions to disease progression and resolution.

Binding of arbitrary information into distinct memory representations that can be used to guide behavior is a hallmark of relational memory. What is and is not bound into a memory representation and how those things influence the organization of that representation remain topics of interest. While some information is intentionally and effortfully bound—often the information that is consistent with task goals or expectations about what information may be required later—other information appears to be bound automatically. The present set of experiments sought to investigate whether spatial memory would be systematically influenced by the presence and absence of distinct categories of stimuli on a spatial reconstruction task. In this task, participants must learn multiple item-location bindings and place each item back in its studied location after a short delay. Across three experiments, participants made significantly more within-category errors (i.e., misassigning one item to the location of a different item from the same category) than between-category errors (i.e., misassigning one item to the location of an item from a different category) when categories were perceptually or semantically distinct. These data reveal that category information contributed to the organization of the memory representation and influenced spatial reconstruction performance. Together, these results suggest that categorical information can influence memory organization, and not always to the benefit of overall task performance.

Bacterial regulatory RNAs (sRNAs) are important players to control gene expression. In Staphylococcus aureus, SprC is an antivirulent trans-acting sRNA known to base-pair with the major autolysin atl mRNA, preventing its translation. Using MS2-affinity purification coupled with RNA sequencing, we looked for its sRNA-RNA interactome and identified 14 novel mRNA targets. In vitro biochemical investigations revealed that SprC binds two of them, czrB and deoD, and uses a single accessible region to regulate its targets, including Atl translation. Unlike Atl regulation, the characterization of the SprC-czrB interaction pinpointed a destabilization of the czrAB cotranscript, leading to a decrease of the mRNA level that impaired CzrB zinc efflux pump expression. On a physiological standpoint, we showed that SprC expression is detrimental to combat against zinc toxicity. In addition, phagocyctosis assays revealed a significant, but moderate, increase of czrB mRNA levels in a sprC-deleted mutant, indicating a functional link between SprC and czrB upon internalization in macrophages, and suggesting a role in resistance to both oxidative and zinc bursts. Altogether, our data uncover a novel pathway in which SprC is implicated, highlighting the multiple strategies used by S. aureus to balance virulence using an RNA regulator.

Human organic anion transporting polypeptide (OATP) 1B1 and 1B3 are two highly homologous liver-specific uptake transporters. However, 2’,7’-dichlorofluorescein (DCF) is preferably transported by OATP1B1. In the present study, the molecular mechanisms for the selective transport of DCF by OATP1B1 were investigated by constructing and characterizing an array of OATP1B1/1B3 chimeras and site-directed mutagenesis. Our results show that transmembrane domain (TM) 10 is crucial for the surface expression and function of OATP1B1, in which Q541 and L545 play the most important roles in DCF transport. Replacement of TM10 in OATP1B1 with its OATP1B3 counterpart led to OATP1B1’s complete intracellular retention. Q541 and L545 may interact with DCF directly via hydrogen bonding and hydrophobic interactions. The decrease of DCF uptake by Q541A and L545S was due to their reduced binding affinity for DCF as compared with OATP1B1. In addition, Q541 and L545 are also crucial for the transport of estradiol-17β-glucuronide (E17βG) but not for the transport of estrone-3-sulfate (E3S), indicating different interaction modes between DCF/E17βG and E3S in OATP1B1. Taken together, Q541 and L545 in TM10 are critical for OATP1B1-mediated DCF uptake, but their effect is substrate-dependent.

Exogenous substances, including drugs and chemicals, can transfer into human seminal fluid and influence male fertility and reproduction. In addition, substances relevant in the context of sports drug testing programs, can be transferred into the urine of a female athlete (after unprotected sexual intercourse) and trigger a so-called adverse analytical finding. Here, the question arises as to whether it is possible to distinguish analytically between intentional doping offenses and unintentional contamination of urine by seminal fluid. To this end, 480 seminal fluids from nonathletes were analyzed to identify concentration ranges and metabolite profiles of therapeutic drugs that are also classified as doping agents. Therefore, a screening procedure was developed using liquid chromatography connected to a triple quadrupole mass spectrometer, and suspect samples (i.e., samples indicating the presence of relevant compounds) were further subjected to liquid chromatography-high-resolution accurate mass (tandem) mass spectrometry. The screening method yielded 90 findings (including aromatase inhibitors, selective estrogen receptor modulators, diuretics, stimulants, glucocorticoids, beta-blockers, antidepressants, and the nonapproved proliferator-activated receptor delta agonist GW1516) in a total of 81 samples, with 91% of these suspected cases being verified by the confirmation method. In addition to the intact drug, phase-I and -II metabolites were also occasionally observed in the seminal fluid. This study demonstrated that various drugs including those categorized as doping agents partition into seminal fluid. Monitoring substances and metabolites may contribute to a better understanding of the distribution and metabolism of exogenous substances in seminal fluid that may be responsible for the impairment of male fertility.

Glioblastoma (GBM) is a disease of the whole brain, with infiltrative tumor cells protected by an intact blood-brain barrier (BBB). GBM has a poor prognosis despite aggressive treatment, in part due to the lack of adequate drug permeability at the BBB. Standard of care GBM therapies include radiation and cytotoxic chemotherapy that lead to DNA damage. Subsequent activation of DNA damage response (DDR) pathways can induce resistance. Various DDR inhibitors, targeting the key regulators of these pathways such as ataxia telangiectasia mutated and Rad3-related (ATR), are being explored as radio- and chemosensitizers. Elimusertib, a novel ATR kinase inhibitor, can prevent repair of damaged DNA, increasing efficacy of DNA-damaging cytotoxic therapies. Robust synergy was observed in vitro when elimusertib was combined with the DNA-damaging agent temozolomide; however, we did not observe improvement with this combination in in vivo efficacy studies in GBM orthotopic tumor-bearing mice. This in vitro–in vivo disconnect was explored to understand factors influencing central nervous system (CNS) distribution of elimusertib and reasons for lack of efficacy. We observed that elimusertib is rapidly cleared from systemic circulation in mice and would not maintain adequate exposure in the CNS for efficacious combination therapy with temozolomide. CNS distribution of elimusertib is partially limited by P-glycoprotein efflux at the BBB, and high binding to CNS tissues leads to low levels of pharmacologically active (unbound) drug in the brain. Acknowledging the potential for interspecies differences in pharmacokinetics, these data suggest that clinical translation of elimusertib in combination with temozolomide for treatment of GBM may be limited.

BACKGROUND AND PURPOSE:

Mechanical thrombectomy is a fundamental intervention for acute ischemic stroke treatment. While conventional techniques are effective, cyclic aspiration (CyA) shows potential for better recanalization rates. We aim to investigate factors affecting CyA and compare them with static aspiration (StA).

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JUDY WOODRUFF: But first: Sunday’s elections Austria were the latest ample of a shift to the right Europe’s politics, as 31-year-old Christian Kurz was elected chancellor on an anti-immigration platform.

He may now form a government with a far-right party founded in the 1950s by former Nazis.

That follows recent elections in Germany, where a far-right party roiled the race and dealt a blow to returning leader Angela Merkel.

In Sweden, too, there is a strong challenge from the right and a neo-Nazi group that looks stand in elections next year.

Special correspondent Malcolm Brabant ha been surveying the political landscape in Germany and Sweden, and he begins his report in Scandinavia.

MALCOLM BRABANT, Special Correspondent: In a Gothenburg parking lot, supporters of the Nordic Resistance Movement form up for what they hope will be their biggest-ever march, to propagate an ideology espoused by mother of eight Paulina Forslund.

PAULINA FORSLUND, Nordic Resistance Movement: When white becomes the minority, they will be destroyed. I want my children to have a secure future. I want them not only for them to have a secure Sweden. I want them to have a secure world. And I want other people to fight for the same thing.

MALCOLM BRABANT: When addressing her fellow neo-Nazis, Forslund’s rhetoric sharpens.

PAULINA FORSLUND (through interpreter): I’m the welder’s daughter, the forester’s grandchild. My line consists of hardworking men and women. It’s people like them we can thank for the welfare system that our lying politicians are now giving away to imported scum.

MALCOLM BRABANT: Clearly expecting trouble, the movement’s leaders have a muscular protection detail, marching past a silent protest. The sign reads “No Nazis on our streets.”

This protester would only give her name as Johanna.

JOHANNA, Anti-Nazi Protester: They are racist people. They are people who think that certain people are better than others, and I will not stand for that. It’s not something I think has a place in a modern society.

MALCOLM BRABANT: Experts say the resistance movement is recruiting aggressively, and believe this demonstration is emblematic of the rise of the far right.

It took place on Yom Kippur, the Jewish day of atonement.

Allan Stutzinky is leader of Gothenburg’s Jewish community.

ALLAN STUTZINKY, Jewish Community Leader (through interpreter): Nazism has returned. The descendants of the murderers are organizing the same marches today, waving the same flags, shouting the same slogans, and have the same racist agenda.

MALCOLM BRABANT: Anna Johansson is a member of the governing Social Democrat Party. It’s considering outlawing the Nordic Resistance Movement.

ANNA JOHANSSON, Swedish Social Democratic Party: In Sweden and in Denmark, and in other countries, extreme parties are growing, and the hatred is spreading around.

MALCOLM BRABANT: “Go home to mama,” he shouts. “Nazi pigs,” chant the anti- fascist protesters, as a bottle flies through the air.

DAMON, Nordic Resistance Movement: If someone calls themselves a Nazi, most of us would dissociate with that person. That’s nothing we stand for ourselves. I never call myself a Nazi. I’m a national socialist.

MALCOLM BRABANT: Hitler’s party was also called National Socialist, but Damon, a 40-year-old welder, insists he’s a nonviolent family man.

DAMON: The demographic landscape of our — of the whole of Europe is changing, so, basically, it’s a concern on preserving my heritage for my family and our kin.

MALCOLM BRABANT: This demonstration has been stopped short of its destination. The Nordic Resistance Movement is currently trapped between a line of police and anti-fascist protesters. And it looks as though this demonstration isn’t going any further.

Violence briefly erupts as the resistance movement tries to break through police lines, and several marchers are arrested.

PAULINA FORSLUND: We are not your enemy. We are the government’s enemy.

They say we live in a democracy, but we have never had an election about if we want to take all these people in.

MALCOLM BRABANT: When Europe’s refugee crisis began in 2015, Sweden copied Germany’s open-door policy, and 160,000 migrants entered the country. Two years on, Sweden has tighter borders and has begun deporting some of the newcomers.

The new atmosphere alarms Floid Gumbo, entertaining an anti-Nazi rally.

FLOID GUMBO, Singer Originally from Zimbabwe: I came to Sweden over 20 years ago. The climate in Sweden, the people were so friendly, and things were completely different, more welcoming. And I feel like things have sort of gradually changed.

I’m very concerned, because I have children, because I’m thinking what I experienced here is not the same kind of climate, atmosphere that they are going to experience here.

ANNA JOHANSSON: It’s not so long ago that the Nazis ruined Europe. And that makes me very worried. The German elections were terrifying, I think.

MALCOLM BRABANT: Johansson is referring to last month’s success of the right-wing Alternative For Germany Party, or AFD, when it entered Parliament for the first time with 13 percent of the vote.

HUGH BRONSON, Alternative For Germany Party: The AFD only came into existence because Merkel deserted the traditional conservative Christian voters. They were looking for a home, and the AFD has offered them a safe place.

MALCOLM BRABANT: Hugh Bronson is deputy leader of the AFD in Berlin.

Now his party, the third largest in Parliament, is demanding that Angela Merkel imposes tougher immigration rules.

Your opponents claim that you are a party of hate. What’s your response to that?

HUGH BRONSON: We embrace foreigners who respect our laws, pay their taxes, send their children to school, and go about their normal life. The problem is with people who abuse the system to have a better life, or let others pay for their better lives, or who are criminals.

MALCOLM BRABANT: Outside the opera house in Dresden, former East Germany, singer Luca Bergelt is dismayed by the political landscape shifting to the right.

LUCA BERGELT, Singer: My fear is that they will tear Europe apart. They are going to raise up the walls again. They’re going to build new walls between the countries, and that Europe will get more close into itself.

MALCOLM BRABANT: Anti-immigrant sentiment is strong in Dresden. The city was the birthplace of a pan-European anti-Islamic movement, and it delivered the largest number of votes for the right-wing party.

On a holiday to celebrate German unification after the fall of communism, retired engineer Wilfried Schmidt explained why he sent a message to Angela Merkel.

WILFRIED SCHMIDT, Retired Engineer (through interpretor): Let’s put it this way. We all need to recognize that Germany is undergoing social changes that are becoming harder to control. For one, there is mass immigration from difficult regions that is increasingly uncontrollable, of people with entirely different concepts of life, from fundamental differently structured societies that are problematic.

MALCOLM BRABANT: About one million migrants poured into Germany in 2015. Chancellor Merkel consistently defended her pro-refugee policies, but now she has been punished by voters who believe she ignored their concerns.

Chancellor Merkel has promised to listen to the people who voted for the AFD, and she says she’s going to try to win them over with what she calls good politics. But she will not countenance having the party in her coalition.

But the chancellor needs to find new partners who are prepared to be tough on immigration.

As she tries to forge a coalition, the chancellor has agreed to put an annual cap of 200,000 on the number of immigrants, something she previously refused to do. But will it be enough to woo back people who deserted her at the election?

A question for Werner Patzelt, a political scientist at Dresden University.

WERNER PATZELT, Dresden University: Since Chancellor Merkel has made so many U-turns in German domestic politics, it wouldn’t be a surprise if she would try to do a U-turn, also winning back AFD voters.

But this is a really hard political task, because so many of them are so much disappointed by the Christian Democratic Union in general, and by Chancellor Merkel in particular, that they will do anything to avoid going back.

MALCOLM BRABANT: Back in Sweden, the governing party is horrified at the concept of conceding ground to right-wingers, and is trying to isolate them.

ANNA JOHANSSON: Experience shows that, when you adopt the ideas from these right-wing parties, they spread. These parties have their agenda implemented by other parties. And I wouldn’t want to see that happen in Sweden.

FLOID GUMBO: We’re all human beings. We share this world. We’re all here. There’s enough space for us all.

MALCOLM BRABANT: But that’s an appeal that an increasing number of Swedes are rejecting, as the country and much of Europe go through a crisis of identity.

For the PBS NewsHour, I’m Malcolm Brabant in Gothenburg.

The post Far-right groups gain ground in Sweden and Germany amid migrant influx appeared first on PBS NewsHour.

Chris believes rabites are full of juice. Kelley's furry tank game bias is exposed. Robert gets to be the Snivey he always was inside. Rock flautist.

The post RPG Cast – Episode 702: “He Plays Flute Like Your Mom Plays SNES” appeared first on RPGamer.

Our Future Chronicles column explores an imagined history of inventions and developments yet to come. We visit 2032 and meet artificial animals that love their owners, without the carbon footprint of biological pets. Rowan Hooper explains how it happened

An accurate description of low-density nuclear matter is crucial for explaining the physics of neutron star crusts, according to a team of theoretical physicists led by Argonne National Laboratory’s Dr. Alessandro Lovato.

The post Physicists Find Evidence for Superfluidity in Low-Density Neutron Matter appeared first on Sci.News: Breaking Science News.

Genetic analysis of a bird flu virus detected in a person in Missouri who didn’t previously have contact with animals offers more details on the case, but experts say there isn’t substantial evidence to suggest human-to-human transmission is happening

Two more people in the US have tested positive for the H5N1 bird flu virus, highlighting the need for expanded influenza surveillance to prevent a potential pandemic

A vaccination campaign targeting ducks, the farm birds most at risk of getting and spreading bird flu, succeeded in greatly reducing outbreaks of the virus on poultry farms in France

Computer simulations of how influenza A moves through human mucus found it is ideally configured to slide through the sticky stuff on its way to infecting cells

A bird flu virus that has been circulating in dairy cattle for months has now been found in a pig in the US for the first time, raising the risk of the virus evolving to become more dangerous to people

Blood tests have shown that about 7 per cent of workers on dairy farms that had H5N1 outbreaks had antibodies against the disease

A new study by the Centers for Disease Control and Prevention found that some dairy farm employees showed signs of infection, even when they didn’t report feeling sick. The CDC concluded that more bird flu testing of dairy farm employees is required. According to Dr. Nirav Shah, the CDC’s principal... Continue Reading

Human bird flu has hospitalized a Canadian teenager at British Columbia Children’s Hospital. He is the first person in Canada to test positive for the bird flu virus. The B.C. teen likely acquired the virus from exposure to a bird or animal. B.C. Health said the infection is a rare... Continue Reading

Imagine pulling up to a refueling station and filling your vehicle’s tank with liquid hydrogen, as safe and convenient to handle as gasoline or diesel, without the need for high-pressure tanks or cryogenic storage. This vision of a sustainable future could become a reality if a Calgary, Canada–based company, Ayrton Energy, can scale up its innovative method of hydrogen storage and distribution. Ayrton’s technology could make hydrogen a viable, one-to-one replacement for fossil fuels in existing infrastructure like pipelines, fuel tankers, rail cars, and trucks.

The company’s approach is to use liquid organic hydrogen carriers (LOHCs) to make it easier to transport and store hydrogen. The method chemically bonds hydrogen to carrier molecules, which absorb hydrogen molecules and make them more stable—kind of like hydrogenating cooking oil to produce margarine.

A researcher pours a sample of Ayrton’s LOHC fluid into a vial.Ayrton Energy

The approach would allow liquid hydrogen to be transported and stored in ambient conditions, rather than in the high-pressure, cryogenic tanks (to hold it at temperatures below -252 ºC) currently required for keeping hydrogen in liquid form. It would also be a big improvement on gaseous hydrogen, which is highly volatile and difficult to keep contained.

Founded in 2021, Ayrton is one of several companies across the globe developing LOHCs, including Japan’s Chiyoda and Mitsubishi, Germany’s Covalion, and China’s Hynertech. But toxicity, energy density, and input energy issues have limited LOHCs as contenders for making liquid hydrogen feasible. Ayrton says its formulation eliminates these trade-offs.

Safe, Efficient Hydrogen Fuel for Vehicles

Conventional LOHC technologies used by most of the aforementioned companies rely on substances such as toluene, which forms methylcyclohexane when hydrogenated. These carriers pose safety risks due to their flammability and volatility. Hydrogenious LOHC Technologies in Erlanger, Germany and other hydrogen fuel companies have shifted toward dibenzyltoluene, a more stable carrier that holds more hydrogen per unit volume than methylcyclohexane, though it requires higher temperatures (and thus more energy) to bind and release the hydrogen. Dibenzyltoluene hydrogenation occurs at between 3 and 10 megapascals (30 and 100 bar) and 200–300 ºC, compared with 10 MPa (100 bar), and just under 200 ºC for methylcyclohexane.

Ayrton’s proprietary oil-based hydrogen carrier not only captures and releases hydrogen with less input energy than is required for other LOHCs, but also stores more hydrogen than methylcyclohexane can—55 kilograms per cubic meter compared with methylcyclohexane’s 50 kg/m³. Dibenzyltoluene holds more hydrogen per unit volume (up to 65 kg/m³), but Ayrton’s approach to infusing the carrier with hydrogen atoms promises to cost less. Hydrogenation or dehydrogenation with Ayrton’s carrier fluid occurs at 0.1 megapascal (1 bar) and about 100 ºC, says founder and CEO Natasha Kostenuk. And as with the other LOHCs, after hydrogenation it can be transported and stored at ambient temperatures and pressures.

Judges described [Ayrton's approach] as a critical technology for the deployment of hydrogen at large scale.” —Katie Richardson, National Renewable Energy Lab

Ayrton’s LOHC fluid is as safe to handle as margarine, but it’s still a chemical, says Kostenuk. “I wouldn’t drink it. If you did, you wouldn’t feel very good. But it’s not lethal,” she says.

Kostenuk and fellow Ayrton cofounder Brandy Kinkead (who serves as the company’s chief technical officer) were originally trying to bring hydrogen generators to market to fill gaps in the electrical grid. “We were looking for fuel cells and hydrogen storage. Fuel cells were easy to find, but we couldn’t find a hydrogen storage method or medium that would be safe and easy to transport to fuel our vision of what we were trying to do with hydrogen generators,” Kostenuk says. During the search, they came across LOHC technology but weren’t satisfied with the trade-offs demanded by existing liquid hydrogen carriers. “We had the idea that we could do it better,” she says. The duo pivoted, adjusting their focus from hydrogen generators to hydrogen storage solutions.

“Everybody gets excited about hydrogen production and hydrogen end use, but they forget that you have to store and manage the hydrogen,” Kostenuk says. Incompatibility with current storage and distribution has been a barrier to adoption, she says. “We’re really excited about being able to reuse existing infrastructure that’s in place all over the world.” Ayrton’s hydrogenated liquid has fuel-cell-grade (99.999 percent) hydrogen purity, so there’s no advantage in using pure liquid hydrogen with its need for subzero temperatures, according to the company.

The main challenge the company faces is the set of issues that come along with any technology scaling up from pilot-stage production to commercial manufacturing, says Kostenuk. “A crucial part of that is aligning ourselves with the right manufacturing partners along the way,” she notes.

Asked about how Ayrton is dealing with some other challenges common to LOHCs, Kostenuk says Ayrton has managed to sidestep them. “We stayed away from materials that are expensive and hard to procure, which will help us avoid any supply chain issues,” she says. By performing the reactions at such low temperatures, Ayrton can get its carrier fluid to withstand 1,000 hydrogenation-dehydrogenation cycles before it no longer holds enough hydrogen to be useful. Conventional LOHCs are limited to a couple of hundred cycles before the high temperatures required for bonding and releasing the hydrogen breaks down the fluid and diminishes its storage capacity, Kostenuk says.

Breakthrough in Hydrogen Storage Technology

In acknowledgement of what Ayrton’s nontoxic, oil-based carrier fluid could mean for the energy and transportation sectors, the U.S. National Renewable Energy Lab (NREL) at its annual Industry Growth Forum in May named Ayrton an “outstanding early-stage venture.” A selection committee of more than 180 climate tech and cleantech investors and industry experts chose Ayrton from a pool of more than 200 initial applicants, says Katie Richardson, group manager of NREL’s Innovation and Entrepreneurship Center, which organized the forum. The committee based its decision on the company’s innovation, market positioning, business model, team, next steps for funding, technology, capital use, and quality of pitch presentation. “Judges described Ayrton’s approach as a critical technology for the deployment of hydrogen at large scale,” Richardson says.

As a next step toward enabling hydrogen to push gasoline and diesel aside, “we’re talking with hydrogen producers who are right now offering their customers cryogenic and compressed hydrogen,” says Kostenuk. “If they offered LOHC, it would enable them to deliver across longer distances, in larger volumes, in a multimodal way.” The company is also talking to some industrial site owners who could use the hydrogenated LOHC for buffer storage to hold onto some of the energy they’re getting from clean, intermittent sources like solar and wind. Another natural fit, she says, is energy service providers that are looking for a reliable method of seasonal storage beyond what batteries can offer. The goal is to eventually scale up enough to become the go-to alternative (or perhaps the standard) fuel for cars, trucks, trains, and ships.

A teenager who tested positive for avian flu is in critical condition with acute respiratory distress according to Provincial Health Officer Dr. Bonnie Henry.

While some fake videos made by actors with Russian ties received millions of views, researchers say there's so far no indication that these efforts swayed U.S. election results.

On day one of Donald Trump's presidency, Robert F. Kennedy Jr. says he'll be advising Trump to take fluoride out of public water. The former presidential hopeful — and prominent proponent of debunked public health claims — has described fluoride as "industrial waste."

Le corps ligoté en état de décomposition retrouvé le 30 octobre dans l’un des parcs les plus achalandés de Montréal est celui de Kevin Mirshahi.

Humans and pigs could both serve as mixing vessels for a bird flu–seasonal flu hybrid, posing a risk of wider spread

The outcome of the 2024 U.S. presidential election could reshape policies from health care at home to nuclear proliferation abroad