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Dec 1, 2020
Rivers could generate thousands of nuclear power plants worth of energy, thanks to a new ‘blue’ membrane
Posted by Raphael Ramos in categories: chemistry, nanotechnology, nuclear energy
There are several ways to generate power from that mixing. And a couple of blue energy power plants have been built. But their high cost has prevented widespread adoption. All blue energy approaches rely on the fact that salts are composed of ions, or chemicals that harbor a positive or negative charge. In solids, the positive and negative charges attract one another, binding the ions together. (Table salt, for example, is a compound made from positively charged sodium ions bound to negatively charged chloride ions.) In water, these ions detach and can move independently.
By pumping the positive ions—like sodium or potassium—to the other side of a semipermeable membrane, researchers can create two pools of water: one with a positive charge, and one with a negative charge. If they then dunk electrodes in the pools and connect them with a wire, electrons will flow from the negatively charged to the positively charged side, generating electricity.
In 2013, French researchers made just such a membrane. They used a ceramic film of silicon nitride—commonly used in industry for electronics, cutting tools, and other uses—pierced by a single pore lined with a boron nitride nanotube (BNNT), a material being investigated for use in high-strength composites, among other things. Because BNNTs are highly negatively charged, the French team suspected they would prevent negatively charged ions in water from passing through the membrane (because similar electric charges repel one another). Their hunch was right. They found that when a membrane with a single BNNT was placed between fresh- and saltwater, the positive ions zipped from the salty side to the fresh side, but the negatively charged ions were mostly blocked.
Dec 1, 2020
What You Need to Know About Saturn’s Moon Titan
Posted by Alberto Lao in category: space
😯 Earth isn’t the only place with rivers, lakes & seas. Saturn’s moon Titan has them, too — not of water, but liquid methane & ethane! This frigid world even hides a liquid water ocean deep beneath its surface.
Here’s what you need to know about Titan: https://go.nasa.gov/2Jost2M
Dec 1, 2020
Woman gives birth to daughter who spent 24 years as frozen embryo: ‘She’s perfect’
Posted by Brent Ellman in category: futurism
“Benjamin and Tina Gibson were blessed on Nov. 25 with their “sweet miracle:” Baby Emma Wren, weighing in at 6 lbs., 8 oz., and 20 inches long, the National Embryo Donation Center announced Tuesday.
But what makes Emma a “miracle” child? Having been cryopreserved for twenty-four and a half years, she’s the longest known frozen human embryo to result in a successful birth.”
😲
Dec 1, 2020
New Rocket Engine Could Use Slimy Gel as Fuel
Posted by Quinn Sena in category: space travel
Final Countdown
NewRocket expects to have a product available in the new future, and is also trying to develop new rockets that use the fuel, according to The Times of Israel.
“Rockets that don’t use controllable engines run their engines until they exhaust the fuel,” NewRocket CEO Ilan Harel told The Times of Israel. “Those that are using controllable engines either use highly toxic fuels, which can be stored for long time, storable fuels, or they use cryogenic fuels which are considered nontoxic but are used only for short duration, non-storable.”
Dec 1, 2020
New Wind Turbine Blades Could be Recycled Instead of Landfilled
Posted by Quinn Sena in category: sustainability
If the blades can hold up to outdoor conditions, they could help accelerate onshore and offshore wind power.
Dec 1, 2020
Quantum coherence times, 2000–2040
Posted by Future Timeline in categories: computing, mathematics, quantum physics
Coherence times in quantum computing have increased by orders of magnitude since the early 2000s. If this exponential progress continues, coherence times measured in seconds or even minutes could be achieved in the near future.
When discussing the latest quantum computers, most people tend to focus on the number of quantum bits (or qubits) in a system. However, while qubit counts are a very important factor, another key metric is coherence time, which measures how long a qubit can hold information.
In order to generate complex mathematical calculations, a qubit needs to hold information for as long as possible. That requires physical qubits to remain highly isolated from the surrounding environment. When a qubit is disrupted by external stimuli – such as background noise from vibrations, temperature changes or stray electromagnetic fields – information about the state of that qubit “leaks out” in a process known as decoherence. This can ruin the ability to exploit any quantum effects. Longer coherence times enable more quantum gates to be utilised before this occurs, resulting in more complex calculations.
Dec 1, 2020
COVID-19 Research: Study Shows That High-Density Lipoproteins (HDL) Or ‘Good’ Cholesterol Facilitates SARS-CoV-2 Cell Entry
Posted by Poopeh Morakkabati in categories: biotech/medical, military
COVID-19 Research: Chinese researchers from the Beijing Institute of Biotechnology, Academy of Military Medical Sciences (AMMS)-China led by Professor Dr Wei Congwen, have found the role of an HDL (high-density lipoprotein) receptor in the facilitation of entry of the SARS CoV-2 into human host cells.
The SARS-CoV-2 infects host cells through binding of the viral spike protein (SARS-2-S) to the cell-surface receptor angiotensin-converting enzyme 2 (ACE2).
Dec 1, 2020
Simulations open a new way to reverse cell aging
Posted by Kevin Huang in categories: biotech/medical, engineering, life extension, neuroscience
Simulations that model molecular interactions have identified an enzyme that could be targeted to reverse a natural aging process called cellular senescence. The findings were validated with laboratory experiments on skin cells and skin equivalent tissues, and published in the Proceedings of the National Academy of Sciences (PNAS).
“Our research opens the door for a new generation that perceives aging as a reversible biological phenomenon,” says Professor Kwang-Hyun Cho of the Department of Bio and Brain engineering at the Korea Advanced Institute of Science and Technology (KAIST), who led the research with colleagues from KAIST and Amorepacific Corporation in Korea.
Cells respond to a variety of factors, such as oxidative stress, DNA damage, and shortening of the telomeres capping the ends of chromosomes, by entering a stable and persistent exit from the cell cycle. This process, called cellular senescence, is important, as it prevents damaged cells from proliferating and turning into cancer cells. But it is also a natural process that contributes to aging and age-related diseases. Recent research has shown that cellular senescence can be reversed. But the laboratory approaches used thus far also impair tissue regeneration or have the potential to trigger malignant transformations.
Dec 1, 2020
Innate immune system: Natural killer cells and cancer
Posted by Lon Anderson in categories: biotech/medical, life extension
https://www.BetaGlucanShop.com — Natural killer cells (NK cells) are the most aggressive cells of your immune system and kills through apoptosis, also known as programmed cell death. These innate immune cells are key players against viral infections and cancer growth.
Natural killer cells help prevent metastasis by killing abnormal cells and tumour cells. Metastasis is the spread of cancer from one part of the body to another. Beta glucans are used in immunotherapy as they may help (depending on type) the immune system distinguish between healthy and abnormal cells like cancer cells, and thus direct the immune cells to engage cancer cells.
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