| AskScience AMA Series: We're from the Pacific Northwest National Laboratory and from Washington Maritime Blue and DNV GL. Our organizations are working together to bring the safe use of hydrogen to these ports for a cleaner energy future. Ask away, we're here to answer your questions. AUA! Posted: 08 Oct 2020 04:00 AM PDT Hi Reddit, Happy National Hydrogen and Fuel Cell Day! We;re Jamie Holladay, David Hume, and Lindsay Steele from the Pacific Northwest National Laboratory and Jennifer States from Washington Maritime Blue and DNV GL. Did you know the use of hydrogen to power equipment and ships at our nation's ports can greatly reduce energy consumption and harmful emissions? Did you know that the transportation sector contributes 29 percent of harmful emissions to the atmosphere-more than the electricity, industrial, commercial and residential, and agricultural sectors? The nation's ports consume more than 4 percent of the 28 percent of energy consumption attributed to the transportation sector. More than 2 million marine vessels worldwide transport greater than 90 percent of the world's goods. On land, countless pieces of equipment, such as cranes and yard tractors, support port operations. Those vessels and equipment consume 300 million tonnes of diesel fuel per year, produce 3 percent of global carbon dioxide emission, and generate the largest source of sulfur dioxide emissions. Pacific Northwest National Laboratory and collaborators are looking at how we can help the nation's ports reduce energy consumption and harmful emissions by using hydrogen as a zero-emission fuel. We've conducted a study with several U.S. ports to assess replacing diesel with hydrogen fuel cells in port operations. We've done this through collection of information about equipment inventory; annual and daily use, power, and fuel consumption; data from port administrators and tenants; and satellite imagery to verify port equipment profiles. We crunched the data and found that hydrogen demand for the U.S. maritime industry could exceed a half million tonnes per year. We are also seeking to apply our abundant hydrogen expertise to provide a multi-use renewable hydrogen system to the Port of Seattle-which will provide the city's utility provider with an alternative clean resource. Our research is typically supported by the Department of Energy's Hydrogen and Fuel Cell Technologies Office. We'd love to talk with you about our experiences and plans to connect our nation's ports to a hydrogen future. We will be back at noon PDT (3 ET, 19 UT) to answer your questions. AUA! Username: /u/PNNL submitted by /u/AskScienceModerator [link] [comments] |
| What is the difference between 99% humidity and 100%? Posted: 08 Oct 2020 01:57 AM PDT Not sure if this is correct but isn't 100% humidity just water. If so, what makes that one percent go from air to water? submitted by /u/ACSanchez2000 [link] [comments] |
| How is AC current more dangerous than DC current ? Posted: 08 Oct 2020 03:33 AM PDT |
| Why does melting "reset the clock" for radiometric dating? Posted: 07 Oct 2020 06:21 PM PDT So I understand that radiometric dating of rocks allows us to interpret the time since the last time the rock was melted. But I don't quite understand why. Does the melting process facilitate the formation of new isotopes or am I missing something? submitted by /u/_Homelesscat_ [link] [comments] |
| With covid happening and quarantine supposedly stifling influenza, is vaccination against influenza more important than during previous years ? Posted: 07 Oct 2020 10:19 PM PDT My question has many "folds". like the title says, is being vaccinated against the flu more important or less because of covid and quarantines stifling its growth? Considering the fact that winter is coming and influenza is going to hit northern economies, is the impact of the flu estimated to worsen the hospitals' capacity to treat patients or is the flu going to stay "low" on the radar? Basically, would an epidemiologist say the vaccination is more important or less than in the last few years? submitted by /u/Brock2845 [link] [comments] |
| What actually happens when I change the radio station in my car? How does my antenna know when I switch from 88.5 Newstalk radio to Oldies 101.1? Bonus points: why are FM stations odd numbers? Posted: 07 Oct 2020 01:42 PM PDT |
| How do you lose your sense of taste with COVID? Posted: 07 Oct 2020 08:20 AM PDT |
| How does the absorption of radiation lead to an increase in temperature? Posted: 07 Oct 2020 10:11 AM PDT When a photon is absorbed by an atom, it becomes excited and an electron is moved to a higher energy level. How does this translate to an increase in the atom's kinetic energy if the energy is used to move the electron further from the nucleus? submitted by /u/gromitthisisntcheese [link] [comments] |
| Does spin affect the half-life of an atom, or are certian spins more stable? Posted: 07 Oct 2020 04:24 PM PDT I was looking at my handy-dandy chart of Nuclides today, really for the first time. One thing that stood out to me was a certain atom, (Believe it was Xenon-131 around that isotope but definitely Xenon) had a much different half life with a different spin. The left side of the isotope had "3/-" and a half life of around 11(?) days, then the spin with "11/+" had just a abundance of some reasonably large amount. How are these correlated, if at all? submitted by /u/DeyCallMeCasper [link] [comments] |
| Why do some shots go in the butt instead of the arm or leg? Posted: 07 Oct 2020 03:02 PM PDT |
| Are mRNA vaccines self-limiting in the human body? Posted: 07 Oct 2020 04:19 PM PDT I understand (I think) that the RNA causes the person's own cells to generate the antigen (or whatever other biological component produces the immune response). My question is this: how/when do my cells stop making that antigen/biological component? Is it forever? Or just until the particular cell that "picked up" the RNA dies? Or does my body now just forever produce this antigen/biological component? For a normal vaccine, your body is receiving a known quantity/dosage of some virus or virus component. If we're having our body produce the virus component itself, how is the biological response "contained" or "limited"? submitted by /u/pistolplc [link] [comments] |
| What is receptor internalization in Collybolide? Posted: 07 Oct 2020 12:39 PM PDT I am currently looking into the mushroom Rhodocollybia Maculata and while reading through the article read this: " These results show that Colly, like other high potency hκOR agonists, induces rapid and robust receptor internalization. " Could someone with a little more knowledge explain? Original article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4889365/ submitted by /u/Kuzjoe [link] [comments] |
| Why are scientists still unsure about the immunity time span of covid 19? Posted: 07 Oct 2020 11:42 AM PDT Why are scientists still unsure about the immunity time span of covid 19? What is the reason? There has been known cases since January.. submitted by /u/thean91 [link] [comments] |
| Does outside air temperature affect the speed a device or object cools? Posted: 07 Oct 2020 11:34 AM PDT Does external temp of a device affect how fast it cools? Or does a device cool at the same speed no matter the external temp. For example: If I take one soda and put it in the fridge and another soda and put it in the freezer. Does the one in the freezer cool faster? Or do they cool at the same speed, but the freezer soda will continue to get cooler than the fridge soda? submitted by /u/lesnod [link] [comments] |
| When will the sun start fusing carbon? Posted: 07 Oct 2020 03:56 AM PDT |
| Hello, I've just learned about the molecular scissors that can modify genes and I was wondering I would like to know if this can be used to turn a Y chromosome and turn it into a X ? and if soo would that change the physical traits of the person ? Posted: 07 Oct 2020 12:30 PM PDT "Professor Emmanuelle Charpentier and Professor Jennifer Doudna have won the 2020 Nobel Prize in chemistry for their work developing a method for genome editing. The award takes the number of women who have ever won the Nobel Prize in chemistry from five to seven. Both scientists will equally share 10 million Swedish kronor (£866,000) for their discovery of "one of gene technology's sharpest tools" - the CRISPR/Cas9 genome editing technique, or "genetic scissors" as the committee described it. "Using these [scissors], researchers can change the DNA of animals, plants and microorganisms with extremely high precision," said the Nobel committee. "This technology has had a revolutionary impact on the life sciences, is contributing to new cancer therapies and may make the dream of curing inherited diseases come true." It is the first time the Nobel Prize for chemistry has been awarded to two women in the same year in its 119-year history. The genome editing technique they developed is based on creating proteins which match the DNA code where a "cut" is going to be made. This effectively allows researchers to insert, repair or edit a gene in such a way that the DNA doesn't see the change as damage, but as a legitimate edit to be replicated by the cell. "There is enormous power in this genetic tool, which affects us all," said Claes Gustafsson, chair of the Nobel Committee for chemistry. "It has not only revolutionised basic science, but also resulted in innovative crops and will lead to ground-breaking new medical treatments,"" submitted by /u/skaaelya [link] [comments] |
