Libro de Visitas

Alonzohinge

17 Apr 2025 - 07:35 pm

Space, time: The continual question
If time moves differently on the peaks of mountains than the shores of the ocean, you can imagine that things get even more bizarre the farther away from Earth you travel.
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To add more complication: Time also passes slower the faster a person or spacecraft is moving, according to Einstein’s theory of special relativity.

Astronauts on the International Space Station, for example, are lucky, said Dr. Bijunath Patla, a theoretical physicist with the US National Institute of Standards and Technology, in a phone interview. Though the space station orbits about 200 miles (322 kilometers) above Earth’s surface, it also travels at high speeds — looping the planet 16 times per day — so the effects of relativity somewhat cancel each other out, Patla said. For that reason, astronauts on the orbiting laboratory can easily use Earth time to stay on schedule.
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For other missions — it’s not so simple.

Fortunately, scientists already have decades of experience contending with the complexities.

Spacecraft, for example, are equipped with their own clocks called oscillators, Gramling said.

“They maintain their own time,” Gramling said. “And most of our operations for spacecraft — even spacecraft that are all the way out at Pluto, or the Kuiper Belt, like New Horizons — (rely on) ground stations that are back on Earth. So everything they’re doing has to correlate with UTC.”
But those spacecraft also rely on their own kept time, Gramling said. Vehicles exploring deep into the solar system, for example, have to know — based on their own time scale — when they are approaching a planet in case the spacecraft needs to use that planetary body for navigational purposes, she added.

For 50 years, scientists have also been able to observe atomic clocks that are tucked aboard GPS satellites, which orbit Earth about 12,550 miles (20,200 kilometers) away — or about one-nineteenth the distance between our planet and the moon.

Studying those clocks has given scientists a great starting point to begin extrapolating further as they set out to establish a new time scale for the moon, Patla said.

“We can easily compare (GPS) clocks to clocks on the ground,” Patla said, adding that scientists have found a way to gently slow GPS clocks down, making them tick more in-line with Earth-bound clocks. “Obviously, it’s not as easy as it sounds, but it’s easier than making a mess.”

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17 Apr 2025 - 06:56 pm

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Bernardvox

17 Apr 2025 - 06:19 pm

President Donald Trump wants to bring back American manufacturing in ways that would reshape the United States economy to look more like China’s. The campaign, which has led to a rapidly escalating trade war with China, has given ample social media fodder to Chinese and American observers alike.
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Announcing a series of sweeping tariffs in a move dubbed “Liberation Day,” Trump said last week that it will lead factories to move production back to American shores, boosting the U.S. economy after “foreign leaders have stolen our jobs, foreign cheaters have ransacked our factories, and foreign scavengers have torn apart our once beautiful American dream.”
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In a Truth Social post Wednesday, Trump announced that he is raising tariffs on goods imported from China to 125%, up from the 104% that took effect the same day, due to “the lack of respect that China has shown to the World’s Markets.” Higher targeted tariffs on other countries have been paused for 90 days, although the 10% baseline tariff will remain in place for all countries.
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Meme-makers and Chinese government officials have in recent days begun pointing out the irony of Trump’s tariff-driven manufacturing pivot through AI-generated satire and political cartoons that have percolated online, with many American users boosting the jokes.
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17 Apr 2025 - 06:14 pm

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17 Apr 2025 - 05:47 pm

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17 Apr 2025 - 05:46 pm

В онлайне через каждое слово являются анонсы о многообразных "сливах" фоток когда собственные или эксклюзивные копии стают под ручкой. Для разведки эдаких экспресс-фото есть пристроенные технологии да ресурсы. Щепетильно памятовать: использовать частные материалы сверх дозволения самочинно (а) также неэтично. Пониже рассматриваются чуть только тех. технологии выявления экспресс-фото, тот или другой угадали в течение явный доступ.

Где обычно выясняют сливы

- Соц ставная http://splittee.ir/split-tee-hot-tap-fittings/?unapproved=56047&moderation-hash=548ddbf4e87902bab2f9fd764641f52e#comment-56047 (VK, Pneu, Instagram)
- Уставленные сверху предначертанную тему форумы и imageboard'ы
- Торренты и пиратские сайтики
- Спец Telegram-каналы

Как искать сливы экспресс-фото

1. Искательские доктрины
- Используйте Google, Yandex, Bing для розыска числом ключевым http://perillov.ru/products/ograzhdeniya-vitrazhej/#comment_64098 речам: "слив", "фото имя", "leaked", "пак ярослава".
- Добавляйте фильтры по дате и еще образу контента (узоры).

2. Эхопоиск по иллюстрации
- Сервисы Гугл Images, Yandex Рисунки позволяют https://www.natashakundi.com/sprout-plantable-eye-pencil-review/ находить страницы сайтов, где уже находились сходственные фото.
- Навалите знаменитый фотоотпечаток яндекс продемонстрирует ссылочки на часть источники.

3. Мониторинг Cable равным образом общественных сетей
- Возведите в течение поиск Телеграма стержневые языкоблудие: "утечка", "hole", "интим".
- Некоторые каналы работают сверху публикации "сливов", но обретайтесь аккуратны https://www.andyfloralevents.com/what-is-funeral-flower-etiquette/?unapproved=115167&moderation-hash=6806e9612298664eaa33672b34e1da41#comment-115167 ссылочки смогут вести на плутовские ресурсы то есть кормить вирусы.

4. Форумы также неподписанные дощечки
- Учите разделения предметных форумов (хоть бы, Dvach, Lolzteam) через ихний собственный поиск.
- Проверьте факт дискуссий, связанных мало поисковым запросом.

5. Торрент-трекеры
- Сверху некоторых закрытых и полуоткрытых трекеров (RuTracker, rutorg) могут обозначаться архивные материи от фотоматериалами.
- Введите ценный запрос, обследуйте результаты.

6. Используемые поисковые строи
- Сайты эвентуально PimEyes или Tineye поспособствуют отыскать, в течение какой-никаком месте проступала эндофотография в течение сети.

На яко главно поворотить чуткость

- Через слово обещание "слива" этто фальшивка чи вирус.
- Как перекидывайтесь числом подозрительным гиперссылкам равно не впрыскиваете собственные данные.
- Некоторые материи не дать в обиду бардовским правом то есть откапываются в течение частной собственности.

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17 Apr 2025 - 05:42 pm

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Petercasip

17 Apr 2025 - 05:07 pm

Exposure to phthalates during pregnancy can affect a newborn’s brain development, study finds
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Phthalates — the synthetic chemicals used in everyday products for food packaging, personal care, toys and more — have been linked to abnormal neurological development in infants.

Now, scientists may have discovered a biological pathway for how this phenomenon could occur. Researchers found that in utero exposure to phthalates is linked with altered metabolism of neurotransmitters and amino acids involved in brain maturation, according to a study published Wednesday in the journal Nature Communications.

The report is the first to use untargeted metabolomics — the study of all small molecules or metabolites in a biological system — to connect a mother’s phthalate exposure to a newborn’s metabolites, and those metabolites to neurological development, said senior study author Dr. Donghai Liang via email.
“This represents an important step forward in understanding how prenatal chemical exposures shape infant development at the molecular level,” added Liang, an associate professor of environmental health at Emory University’s Rollins School of Public Health in Atlanta.

First introduced in the 1920s, phthalates are used to make plastics softer and more flexible, primarily in polyvinyl chloride (PVC) products such as vinyl flooring, medical devices, children’s toys, food packaging or shower curtains. The chemicals also help lubricate substances and carry fragrances in various personal care products including deodorant; nail polish; perfumes; hair gels, sprays or shampoos; soaps; and body lotions.

Phthalates are also endocrine disruptors that have been linked to preterm birth, infant genital abnormalities, childhood obesity, asthma, cancer, cardiovascular issues, and low sperm count and testosterone in men.

“We conducted this study because phthalates are everywhere in our daily lives,” Liang said, hence their nickname “everywhere chemicals.”

Harming infant health
The findings are based on mother-newborn pairs enrolled in the Atlanta African American Maternal-Child Cohort between 2016 and 2018. In urine samples collected from 216 mothers between eight weeks and 14 weeks of gestation at visit one and 145 participants between 24 and 30 weeks’ gestation at visit two, the authors measured eight phthalate metabolites. Participants were around age 24 on average, and their levels of some phthalate metabolites were higher than the average determined by the National Health and Nutrition Examination Survey.

Within a day or two of birth, the authors collected the babies’ blood via a heel stick.

The team found prenatal phthalate levels were associated with lower levels of tyrosine, an amino acid and precursor to the thyroid hormone thyroxine. Thyroxine was also abnormally low in those with in utero phthalate exposure, and low thyroxine has been previously associated with greater vulnerability to illness and neurodevelopmental issues in newborns, the authors said. Tyrosine is also a precursor to the neurotransmitters dopamine, norepinephrine and epinephrine, all of which partly contribute to the body’s fight-or-flight response. Low levels of these neurotransmitters can lead to various problems, including anxiety, depression and trouble focusing.

Prenatal phthalate exposure was also linked with lower levels of the essential amino acid tryptophan, which converts into 5-hydroxytryptophan (or 5-HTP), which then turns into serotonin. Both 5-HTP and serotonin were also low. Serotonin has several critical roles in the body, including mood regulation, sleep, learning, memory, digestion and the body’s response to stress. Previous research has linked low serotonin with mood disorders such as depression and anxiety, sleep problems, and digestive issues.