Billytycle says：Mist and microlightning
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To recreate a scenario that may have produced Earth’s first organic molecules, researchers built upon experiments from 1953 when American chemists Stanley Miller and Harold Urey concocted a gas mixture mimicking the atmosphere of ancient Earth. Miller and Urey combined ammonia (NH3), methane (CH4), hydrogen (H2) and water, enclosed their “atmosphere” inside a glass sphere and jolted it with electricity, producing simple amino acids containing carbon and nitrogen. The Miller-Urey experiment, as it is now known, supported the scientific theory of abiogenesis: that life could emerge from nonliving molecules.
For the new study, scientists revisited the 1953 experiments but directed their attention toward electrical activity on a smaller scale, said senior study author Dr. Richard Zare, the Marguerite Blake Wilbur Professor of Natural Science and professor of chemistry at Stanford University in California. Zare and his colleagues looked at electricity exchange between charged water droplets measuring between 1 micron and 20 microns in diameter. (The width of a human hair is 100 microns.)
“The big droplets are positively charged. The little droplets are negatively charged,” Zare told CNN. “When droplets that have opposite charges are close together, electrons can jump from the negatively charged droplet to the positively charged droplet.”
The researchers mixed ammonia, carbon dioxide, methane and nitrogen in a glass bulb, then sprayed the gases with water mist, using a high-speed camera to capture faint flashes of microlightning in the vapor. When they examined the bulb’s contents, they found organic molecules with carbon-nitrogen bonds. These included the amino acid glycine and uracil, a nucleotide base in RNA.
“We discovered no new chemistry; we have actually reproduced all the chemistry that Miller and Urey did in 1953,” Zare said. Nor did the team discover new physics, he added — the experiments were based on known principles of electrostatics.
“What we have done, for the first time, is we have seen that little droplets, when they’re formed from water, actually emit light and get this spark,” Zare said. “That’s new. And that spark causes all types of chemical transformations.”
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Posted Time：2025-04-29 9:06:51
AnthonyAmito says：Scientists redid an experiment that showed how life on Earth could have started. They found a new possibility
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In the 1931 movie “Frankenstein,” Dr. Henry Frankenstein howling his triumph was an electrifying moment in more ways than one. As massive bolts of lightning and energy crackled, Frankenstein’s monster stirred on a laboratory table, its corpse brought to life by the power of electricity.
Electrical energy may also have sparked the beginnings of life on Earth billions of years ago, though with a bit less scenery-chewing than that classic film scene.
Earth is around 4.5 billion years old, and the oldest direct fossil evidence of ancient life — stromatolites, or microscopic organisms preserved in layers known as microbial mats — is about 3.5 billion years old. However, some scientists suspect life originated even earlier, emerging from accumulated organic molecules in primitive bodies of water, a mixture sometimes referred to as primordial soup.
But where did that organic material come from in the first place? Researchers decades ago proposed that lightning caused chemical reactions in ancient Earth’s oceans and spontaneously produced the organic molecules.
Now, new research published March 14 in the journal Science Advances suggests that fizzes of barely visible “microlightning,” generated between charged droplets of water mist, could have been potent enough to cook up amino acids from inorganic material. Amino acids — organic molecules that combine to form proteins — are life’s most basic building blocks and would have been the first step toward the evolution of life.
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Posted Time：2025-04-29 8:41:41
Carloslix says：Mindful wellness challenges
If you’re the type of person who thrives on challenges and pushing your limits, this doesn’t mean you need to shy away from wellness challenges altogether. But before diving in, take a step back and ask yourself if you’re pursuing the challenge for the right reasons, McGregor said.
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Some people want to try these challenges because they believe something is missing from their life, and they’re looking to attain “worth” or receive validation, McGregor noted.
A good way to assess your motivation is by considering whether the challenge will benefit your health or if it’s about showcasing your accomplishments on social media or some other reason.
Before trying any new trend, make sure you have the foundation to handle it and be aware of any potential risks, McGregor said.
For casual runners, this might mean signing up for a 5K but building your endurance gradually while incorporating other strength training exercises into your routine. For more intense challenges, such as a marathon, McGregor encourages people to consult with professionals or a coach who can monitor your progress and condition along the way.
Focusing on sustainable habits
Both McGregor and Curran emphasize the importance of fostering sustainable health habits before embarking on more extreme challenges.
Rather than chasing the idea of being “healthy,” McGregor suggests focusing on actual healthful behaviors and starting small.
If you’re a highly sedentary person and want to add more movement to your day, try doing lunges while brushing your teeth or taking short walks throughout your typical routine.
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Posted Time：2025-04-29 5:24:03
JasonAliep says：Water and life
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Lightning is a dramatic display of electrical power, but it is also sporadic and unpredictable. Even on a volatile Earth billions of years ago, lightning may have been too infrequent to produce amino acids in quantities sufficient for life — a fact that has cast doubt on such theories in the past, Zare said.
Water spray, however, would have been more common than lightning. A more likely scenario is that mist-generated microlightning constantly zapped amino acids into existence from pools and puddles, where the molecules could accumulate and form more complex molecules, eventually leading to the evolution of life.
“Microdischarges between obviously charged water microdroplets make all the organic molecules observed previously in the Miller-Urey experiment,” Zare said. “We propose that this is a new mechanism for the prebiotic synthesis of molecules that constitute the building blocks of life.”
However, even with the new findings about microlightning, questions remain about life’s origins, he added. While some scientists support the notion of electrically charged beginnings for life’s earliest building blocks, an alternative abiogenesis hypothesis proposes that Earth’s first amino acids were cooked up around hydrothermal vents on the seafloor, produced by a combination of seawater, hydrogen-rich fluids and extreme pressure.
Researchers identified salt minerals in the Bennu samples that were deposited as a result of brine evaporation from the asteroid’s parent body. In particular, they found a number of sodium salts, such as the needles of hydrated sodium carbonate highlighted in purple in this false-colored image – salts that could easily have been compromised if the samples had been exposed to water in Earth’s atmosphere.
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Yet another hypothesis suggests that organic molecules didn’t originate on Earth at all. Rather, they formed in space and were carried here by comets or fragments of asteroids, a process known as panspermia.
“We still don’t know the answer to this question,” Zare said. “But I think we’re closer to understanding something more about what could have happened.”
Though the details of life’s origins on Earth may never be fully explained, “this study provides another avenue for the formation of molecules crucial to the origin of life,” Williams said. “Water is a ubiquitous aspect of our world, giving rise to the moniker ‘Blue Marble’ to describe the Earth from space. Perhaps the falling of water, the most crucial element that sustains us, also played a greater role in the origin of life on Earth than we previously recognized.”
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Posted Time：2025-04-29 5:17:23
Testervnc says：
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Posted Time：2025-04-29 4:49:13
Haroldeliff says：Manuala metode
Manuala FUE procedura tiek izmantots tikai roku darbs, graftus atdalot ar instrumentu, kura diametrs ir 0.9-1.00 mm. Parstadits tiek viss grafts, kas parasti satur 1-4 matu folikulus, nedalot atseviski pa 1 graftam, tadejadi iegustot kuplu un dabigu rezultatu.
Veselibas centrs 4
Dr. Ilze Runce veicot griezienus, strada ar mikroskopu, kas dod iespeju iegut matu biezumu, kas maksimali pietuvinats dabigajam un viena procedura iespejams parstadit lidz pat 4000 graftu. Manuala FUE metode tiek izmantota ari uzacu un bardas parstadisana. Procedura norit vieteja anestezija un ir klientam komfortabla – tas laika pacients visu laiku atrodas sedus stavokli proceduru kresla un var lietot datoru, telefonu, planseti, lasit gramatu vai skatities TV.
Dr. Ilze Runce ir manualas metodes aizsaceja Latvija, ir atseviski apguvusi so metodi Kazahstana 1 gada garuma pie nozares profesionaliem un ieviesusi to Latvija kops 2013.gada, kopuma ir veikusi jau vairak ka 1000 manualas FUE proceduras.
Aprakstu sagatavoja Dr. Ilze Runce
Manualas metodes cena ieklauts viss nepieciesamais:
nepieciesamais graftu daudzums;
visi pecoperacijas medikamenti;
sprejs;
sampuns;
cepurite;
pusdienas proceduras diena;
parsiesana nakamaja diena (pec nepieciesamibas).
MATU IZKRISANA
Pastiprinata matu izkrisana jeb alopecija skar gan viriesus, gan sievietes. Ta var but saistita ar novecosanos, genetiku, hroniskam slimibam, ieilgusu stresu, ka ari specifiskam imunas sistemas reakcijam. Mati klust plani vai pilniba izkrit. Ari retas un apdegumi zonas, kur agrak ir bijis apmatojums, (piemeram, uzacis) var radit estetisku diskomfortu.
Matu parstadisanas procedura ir efektivs risinajums gadijumos, kad medikamenti un arstnieciskas proceduras nepalidz!
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Posted Time：2025-04-29 2:37:26
Kennethmix says：Challenging our perceptions of ‘perfection’
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With health influencers raising the bar for success, the wellness space now often feels like a performative space where people strive to showcase peak physical and mental strength.
While seeing others’ achievements can be motivating, it can also be discouraging if your progress doesn’t match theirs.
Each person is chasing the perfect version of themselves — whether it’s a body or a lifestyle — which is dangerous because this is typically an impossible or dangerous version to achieve, Curran said. He added that this type of comparison creates a dangerous cycle in which people constantly feel dissatisfied with their own progress.
“It’s a fantasy in many ways, and once you start chasing after it, you constantly find yourself embroiled in a sense of doubt and deficit,” he said.
Curran also noted that wellness challenges can be particularly damaging for women who struggle with perfectionism, as they tend to be bombarded with impossible beauty standards and societal expectations.
Renee McGregor, a UK-based dietitian who specializes in eating disorders and athlete performance, encourages people to approach wellness trends with curiosity and skepticism. That’s because some influencers and celebrities could be promoting products because there’s a financial benefit for them.
“The thing to ask yourself about the person you’re taking advice from is what do they gain from it?” McGregor said. “If they are going to gain financially, then you know that they (could be willing) to sell you a lie.”
Whether you want to try a new challenge or product that promises amazing results, McGregor suggests doing your research and seeking diverse perspectives, including consulting with doctors when possible.
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Posted Time：2025-04-29 2:33:50
Howardlox says：Tyler O’Neill hits record-extending sixth straight Opening Day home run
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For six seasons in a row, Tyler O’Neill has homered on MLB Opening Day.
Making his debut for the Baltimore Orioles on Thursday, O’Neill started the season with his record-extending sixth straight home run on Opening Day during his team’s 12-2 win against the Toronto Blue Jays.
No other player has homered on more than four consecutive Opening Days, with the 29-year-old outfielder’s three-run shot sending the Orioles into a 5-0 lead at the top of the third at Rogers Centre.
Todd Hundley (1994-97), Gary Carter (1977-80) and Yogi Berra (1955-58) all hit four consecutive home runs on Opening Day, while the Major League Baseball record for the total number of Opening Day home runs is held jointly by Adam Dunn, Ken Griffey Jr. and Frank Robinson on eight.
“I’m just not trying to make too much of it,” O’Neill told reporters about his streak. “I’m just trying to go out, have a good first at-bat and see what the game gives me from there.
“Obviously, I understand what’s going on, but it’s not like I’m going out there trying to do anything crazy.”
O’Neill, who signed a three-year, $49.5 million contract to join Baltimore from the Boston Red Sox in the offseason, finished three-for-three with three RBIs and two walks against the Blue Jays.
“It’s a little different when the lights turn on and you’ve got to show up, so it was really cool to see all the guys show up today,” he said. “We got after it out there.”
While the first two games of the MLB regular season took place between the Chicago Cubs and Los Angeles Dodgers in Tokyo last week, Thursday marked the first official day of the season in the United States.
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Posted Time：2025-04-28 23:33:25
Rodneynuale says：В сфере оптимизации сайта под поисковые системы (SEO) существует множество терминов и понятий, важных для продвижения. Ссылочный вес или ссылочная масса — один из важнейших факторов, влияющих на ранжирование веб-проекта в результатах поиска. В этой статье мы кратко рассказываем, что представляет собой ссылочная масса, какие ее типы выделяют, как она формируется и влияет на рейтинг сайта, а также даем несколько советов о ее наращивании.
ссылочная масса
Что такое ссылочная масса сайта
Ссылочный профиль (масса, вес) — это совокупность всех внешних гиперссылок, которые указывают на определенный сайт. Чем больше качественных внешних ссылок указывают на веб-ресурс, тем выше его авторитет с точки зрения поисковых систем. Поэтому внутренние ссылки, то есть оставленные в пределах самого сайта, ведущие на него же, не являются частью ссылочной массы.
ссылочная масса
ссылочная масса
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Posted Time：2025-04-28 20:50:31
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