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Anonymous

Anthonyowelo

09 Apr 2025 - 02:06 pm

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.

Anonymous

Charlesshomo

09 Apr 2025 - 01:51 pm

Лазерная резка металла это современный и высокоэффективный метод обработки металлов, который широко используется в различных отраслях промышленных технологий. данный процесс основан на использовании лазерного луча для разрезания металла с высокой точностью и минимальным уровнем механических стрессов. Давайте подробнее осмотрим основные аспекты лазерной резки.

Механизм работы

Лазерная резка основана на концентрации лазерного луча на определённой области металла. Когда интенсивность лазера достигает достаточного уровня, металл плавится либо испаряется, образуя рез. Существует несколько технологий лазерной резки, включая:
- CO2 лазеры используются для резки разных типов металлов, отличающихся высокой мощностью.
- Оптоволоконные лазеры более экономичные и эффективные, подходят для резки как тонких, так и толстых металлов лазерная резка металла мо

Достоинства лазерной резки

Лазерная резка имеет множество преимуществ по сравнению с традиционными способами:
- Высокая точность лазерная резка обеспечивает точность до 0,1 мм, что позволяет создавать сложные и детализированные формы.
- Малые термические деформации процесс резки минимизирует тепловое воздействие на материал, что снижает возможность деформаций.
- Универсальность лазер может отлично резать различные материалы, включая сталь, алюминий, медь и даже пластик.
- Автоматизация Большинство моделей лазерных установок могут работать в режиме автомата, что повышает производительность и понижает издержки на рабочую силу.

Недочеты и ограничения

Несмотря на множество преимуществ, лазерная резка имеет и свои ограничения:
- Стоимость оборудования лазерные установки могут требовать веских капиталовложений.
- Ограниченная толщина резки для кое-каких материалов существуют ограничения по толщине, вне которых резка становится неэффективной.
- Потребление энергии лазерные установки употребляют значительное количество электроэнергии.

Применение лазерной резки

Лазерная резка применяется в разных сферах:
- Индустрия изготовка деталей автошины, станков, электроники.
- Строительство создание стальных конструкций, металлических изделий.
- Декор создание интерьерных решений, художественных объектов, маркетинговых вывесок.

Заключение

Лазерная резка металла это высокотехнологичный процесс, который обеспечивает высокую точность и эффективность. Из-за своим преимуществам, этот метод становится всё более модным в различных секторах экономики. В момент выбора лазерной резки принципиально учитывать потребности вашего производства, типы обрабатываемых материалов и экономические аспекты.

Anonymous

Robertgat

09 Apr 2025 - 01:31 pm

Family affair
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Americans Brittany and Blake Bowen had never even been to Ecuador when in 2021 they decided to move to the South American country with their four children.

Tired of “long commutes and never enough money” in the US, the Bowens say they love their new Ecuadorian life. “We hope that maybe we’ll have grandkids here one day.”

Erik and Erin Eagleman moved to Switzerland from Wisconsin with their three children in 2023.

“It feels safe here,” they tell CNN of their new outdoorsy lifestyle in Basel, close to the borders with France and Germany. Their youngest daughter even walks to elementary school by herself.

For adventures with your own family, be it weekend breaks or something longer-term, our partners at CNN Underscored, a product review and recommendations guide owned by CNN, have this roundup of the best kids’ luggage sets and bags.

Starry, starry nights
For close to 100 years, Michelin stars have been a sign of culinary excellence, awarded only to the great and good.

Georges Blanc, the world’s longest-standing Michelin-starred restaurant, has boasted a three-star rating since 1981, but this month the Michelin guide announced that the restaurant in eastern France was losing a star.

More culinary reputations were enhanced this week, when Asia’s 50 best restaurants for 2025 were revealed. The winner was a Bangkok restaurant which is no stranger to garlands, while second and third place went to two Hong Kong eateries.

You don’t need to go to a heaving metropolis for excellent food, however. A 200-year-old cottage on a remote stretch of Ireland’s Atlantic coast has been given a Michelin star. At the time of awarding, Michelin called it “surely the most rural” of its newest winners.

Anonymous

Kennethgiruh

09 Apr 2025 - 12:54 pm

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.

Anonymous

Williamtwity

09 Apr 2025 - 12:15 pm

New design revealed for Airbus hydrogen plane
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In travel news this week: Bhutan’s spectacular new airport, the world’s first 3D-printed train station has been built in Japan, plus new designs for Airbus’ zero-emission aircraft and France’s next-generation high-speed trains.

Grand designs
European aerospace giant Airbus has revealed a new design for its upcoming fully electric, hydrogen-powered ZEROe aircraft. powered by hydrogen fuel cells.

The single-aisle plane now has four engines, rather than six, each powered by their own fuel cell stack.

The reworked design comes after the news that the ZEROe will be in our skies later than Airbus hoped.

The plan was to launch a zero-emission aircraft by 2035, but now the next-generation single-aisle aircraft is slated to enter service in the second half of the 2030s.

Over in Asia, the Himalayan country of Bhutan is building a gloriously Zen-like new airport befitting a nation with its very own happiness index.

Gelephu International is designed to serve a brand new “mindfulness city,” planned for southern Bhutan, near its border with India.

In rail travel, Japan has just built the world’s first 3D-printed train station, which took just two and a half hours to construct, according to The Japan Times. That’s even shorter than the whizzy six hours it was projected to take.

France’s high-speed TGV rail service has revealed its next generation of trains, which will be capable of reaching speeds of up to 320 kilometers an hour (nearly 200 mph).

The stylish interiors have been causing a stir online, as has the double-decker dining car.

Finally, work is underway in London on turning a mile-long series of secret World War II tunnels under a tube station into a major new tourist attraction. CNN took a look inside.

Anonymous

Jacobwet

09 Apr 2025 - 12:10 pm

Посещение кардиолога это важная мера для поддержания сердечно-сосудистого здоровья. Кардиолог занимается диагностикой и лечением заболеваний сердца и сосудов, поэтому постоянные осмотры могут предотвратить серьёзные отягощения. Разглядим, как проходит приём у кардиолога и что следует знать пациентам.

Подготовка к приёму

Чтоб в наибольшей степени отлично использовать время приёма, стоит заблаговременно подготовиться:
- Соберите информацию о вашем здоровье: перенесённые заболевания, операции на сердечко, наследные заболевания.
- Запишите все принимаемые лекарства, включая дозировки.
- Подготовьте список симптомов, которые вас тревожат, и когда они появились.

Первичный осмотр

На первом шаге кардиолог проведёт беседу с пациентом:
- Опрос о жалобах: болит ли сердце, возникают ли одышка, усталость либо головокружение.
- Уточнение истории болезней и образа жизни: подвижность, питание, стресс.

Физикальное обследование

После беседы врач проведёт обследование:
- Измерение артериального давления и пульса.
- Прослушивание сердца с помощью стетоскопа.
- Осмотр на наличие отёков или иных признаков заболеваний.

Диагностические исследования

В зависимости от состояния пациента, кардиолог может назначить дополнительные исследования:
- Электрокардиограмма (ЭКГ) для оценки сердечного ритма.
- Эхокардиография (УЗИ сердца) для визуализации его структуры и функции.
- Холтеровское мониторирование для длительного контроля ритма сердца http://propusk-spb.ru/index.php?subaction=userinfo&user=ifafyg
- Анализы крови для оценки холестерина и других важных показателей.

Обсуждение результатов и дальнейшие шаги

После исполненья абсолютно всех необходимых обследований кардиолог прокомментирует результаты и предложит дальнейшие деянья:
- Вероятные диагнозы и назначение лечения.
- Рекомендации по изменению вида жизни: диета, физическая активность, отказ от вредных повадок.
- План последующих визитов для контроля состояния.

Anonymous

Jamesjub

09 Apr 2025 - 12:01 pm

Wellness perfectionism doesn’t exist. Focus on these sustainable habits
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ou’re scrolling through your phone when you stumble upon the next viral trend: an influencer claiming that following their incredibly strict diet will help you achieve their jaw-dropping physique. Or you see a fresh-faced runner swearing you can run a marathon without any training — just like they did.

Whether or not you’re actively searching for wellness advice, it’s nearly impossible to avoid hearing about the latest health craze making bold guarantees of transformation.

As you wonder if these claims hold any truth, you might also question why people often feel motivated to dive into intense challenges — when seemingly simple habits, such as getting enough sleep or eating more vegetables, often feel much harder to tackle.

Many of us are drawn to these extreme challenges because we’re craving radical change, hoping it will help prove something to ourselves or to others, experts say.

“We always see these kinds of challenges as opportunities for growth, particularly if we’re in a phase of our life where we’ve let ourselves go,” said Dr. Thomas Curran, associate professor of psychology at the London School of Economics and Political Science and an expert on perfectionism. “Maybe we feel that we need to be healthier, or we just had a breakup or (major) life event.”
With social media amplifying these movements, it’s easy to see why people are increasingly drawn to the idea of achieving the “perfect” version of themselves. But before jumping into a new wellness challenge, it’s important to take a moment, reflect on your goals, and consider where you’re starting from.

Anonymous

Jasonvew

09 Apr 2025 - 11:03 am

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.

Related article
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.”

Anonymous

Marinahet

09 Apr 2025 - 08:18 am

Проститутки Королев стояли у остановки на Пионерской, кутаясь в пуховик.
Королёв ночью менялся — исчезали учёные, появлялись индивидуалки на выезд.

— Ты та самая дешевая проститутка? — из темноты вышел мужчина в дорогой куртке.
— Зависит от того, кого ты ждёшь.

Они сели в его «Фольксваген». Он вёз её в Болшево, она смотрела в окно. Этот город знал её всю: МГТУ, увольнение из «Роскосмоса», мужа-алкоголика...
— Тебя как зовут?
— Какая разница?

В сауне с проституткой было чисто и безлико. Деньги вперёд. Работа — привычная, без эмоций.
— Ты не такая, как другие.
— Все так говорят.

На рассвете он отвёз её обратно. Осталось отнести деньги «хозяйке», купить еды...
Город спутников и ракет, а так же дешевых проституток. А она — земная, без полётов.

Anonymous

Jeffreyfuh

09 Apr 2025 - 05:48 am

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