Libro de Visitas

Donaldfrozy

18 Apr 2025 - 05:39 am

Axolotl problems
As Mexico City grew and became more industrialized, the need for water brought pumps and pipes to the lake, and eventually, “it was like a bad, smelly pond with rotten water,” Zambrano said. “All of our aquatic animals suffer with bad water quality, but amphibians suffer more because they have to breathe with the skin.”
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To add to the axolotls’ problems, invasive fish species such as carp and tilapia were introduced to the lake, where they feed on axolotl eggs. And a 1985 earthquake in Mexico City displaced thousands of people, who found new homes in the area around the lake, further contributing to the destruction of the axolotls’ habitat.

These combined threats have devastated axolotl populations. According to the International Union for Conservation of Nature, there are fewer than 100 adult axolotls left in the wild. The species is considered critically endangered.
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While the wild axolotls of Lake Xochimilco have dwindled to near-extinction, countless axolotls have been bred for scientific laboratories and the pet trade. “The axolotl essentially helped establish the field of experimental zoology,” Voss said.

In 1864, a French army officer brought live axolotls back to Europe, where scientists were surprised to learn that the seemingly juvenile aquatic salamanders were capable of reproduction. Since then, scientists around the world have studied axolotls and their DNA to learn about the salamanders’ unusual metamorphosis (or lack thereof) as well as their ability to regrow injured body parts.
In addition to their role in labs, axolotls have become popular in the exotic pet trade (though they are illegal to own in California, Maine, New Jersey and Washington, DC). However, the axolotls you might find at a pet shop are different from their wild relatives in Lake Xochimilco. Most wild axolotls are a dark grayish brown. The famous pink axolotls, as well as other color variants such as white, blue, yellow and black, are genetic anomalies that are rare in the wild but selectively bred for in the pet trade.

What’s more, “most of the animals in the pet trade have a very small genetic variance,” Zambrano said. Pet axolotls tend to be inbred and lack the wide flow of different genes that makes up a healthy population in the wild. That means that the axolotl extinction crisis can’t simply be solved by dumping pet axolotls into Lake Xochimilco. (Plus, the pet axolotls likely wouldn’t fare well with the poor habitat conditions in the lake.)

Gordonamisa

18 Apr 2025 - 05:15 am

‘A whole different mindset’
Accurate clockwork is one matter. But how future astronauts living and working on the lunar surface will experience time is a different question entirely.
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On Earth, our sense of one day is governed by the fact that the planet completes one rotation every 24 hours, giving most locations a consistent cycle of daylight and darkened nights. On the moon, however, the equator receives roughly 14 days of sunlight followed by 14 days of darkness.

“It’s just a very, very different concept” on the moon, Betts said. “And (NASA is) talking about landing astronauts in the very interesting south polar region (of the moon), where you have permanently lit and permanently shadowed areas. So, that’s a whole other set of confusion.”
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“It’ll be challenging” for those astronauts, Betts added. “It’s so different than Earth, and it’s just a whole different mindset.”

That will be true no matter what time is displayed on the astronauts’ watches.

Still, precision timekeeping matters — not just for the sake of scientifically understanding the passage of time on the moon but also for setting up all the infrastructure necessary to carry out missions.

The beauty of creating a time scale from scratch, Gramling said, is that scientists can take everything they have learned about timekeeping on Earth and apply it to a new system on the moon.

And if scientists can get it right on the moon, she added, they can get it right later down the road if NASA fulfills its goal of sending astronauts deeper into the solar system.

“We are very much looking at executing this on the moon, learning what we can learn,” Gramling said, “so that we are prepared to do the same thing on Mars or other future bodies.”

Josephcrete

18 Apr 2025 - 04:58 am

Broken spheres
Dyson died in 2020 before any of his spheres could be found — although they are just one of a dozen ideas that bear his name.
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“As a young scientist, Dyson showed that three competing quantum theories were actually the same theory — he summarily ended the competition,” said William Press, the Leslie Surginer Professor of Computer Science and Integrative Biology at the University of Texas at Austin. He was not involved in the study. “Later, he applied his genius to areas of astronomy, cosmology, the extraterrestrial realm, and also the very real problem of nuclear proliferation here on planet Earth. At the time of his death, he was recognized as a provocative and creative thinker.”

George Dyson also attested to his father’s fascination and comprehensive reach across disciplines.
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“Taking advantage of a short attention span and an aversion to bureaucracy, he contributed to five fields of mathematics and eleven fields of physics, as well as to theoretical biology, engineering, operations research, literature, and public affairs,” the younger Dyson said. “Many of his ideas were controversial, with one of his guiding principles being that ‘It is better to be wrong than to be vague.’”

The approach of the researchers behind the new study could offer a more fruitful path in the search for extraterrestrial intelligence, said Tomotsugu Goto, an associate professor of astronomy at the National Tsing Hua University in Taiwan. He also was not involved with the study.

“However, contamination by circumstellar debris disks, which mimic Dyson Sphere infrared signatures, remains a concern,” he added in an email. “Authors argue that the debris disks around (dwarf stars) are rare, but the 7 candidate authors selected out of 5 million sources are also rare. Despite this, the seven candidates warrant further investigation with powerful telescopes for a more definitive evaluation.”

Larrygek

18 Apr 2025 - 04:50 am

‘Dyson spheres’ were theorized as a way to detect alien life. Scientists say they’ve found potential evidence
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What would be the ultimate solution to the energy problems of an advanced civilization? Renowned British American physicist Freeman Dyson theorized it would be a shell made up of mirrors or solar panels that completely surrounds a star — harnessing all the energy it produces.

“One should expect that, within a few thousand years of its entering the stage of industrial development, any intelligent species should be found occupying an artificial biosphere which completely surrounds its parent star,” wrote Dyson in a 1960 paper in which he first explained the concept
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If it sounds like science fiction, that’s because it is: Dyson took the idea from Olaf Stapledon’s 1937 novel “Star Maker,” and he was always open about that. The late scientist was a professor emeritus at the Institute of Advanced Study in Princeton, New Jersey.
Still, coming from a thinker who some in the scientific community say might have been worthy of a Nobel Prize early in his career, the concept took hold and the hypothetical megastructures became known as Dyson spheres, even though the physicist later clarified that they would actually consist of “a loose collection or swarm of objects traveling on independent orbits around the star.”

In his paper, Dyson also noted that Dyson spheres would give off waste heat detectable as infrared radiation, and suggested that looking for that byproduct would be a viable method for searching for extraterrestrial life. However, he added that infrared radiation by itself would not necessarily mean extraterrestrial intelligence, and that one of the strongest reasons for searching for such sources was that new types of natural astronomical objects might be discovered.

“Scientists (at the time) were largely receptive, not to the likelihood that alien civilisations would be found to exist, but that a search for waste heat would be a good place to look,” said George Dyson, a technology writer and author and the second of Dyson’s six children, via email. “Science fiction, from ‘Footfall’ to ‘Star Trek,’ took the idea and ran with it, while social critics adopted the Dyson sphere as a vehicle for questioning the wisdom of unlimited technological growth.”

Gordonamisa

18 Apr 2025 - 04:20 am

‘A whole different mindset’
Accurate clockwork is one matter. But how future astronauts living and working on the lunar surface will experience time is a different question entirely.
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On Earth, our sense of one day is governed by the fact that the planet completes one rotation every 24 hours, giving most locations a consistent cycle of daylight and darkened nights. On the moon, however, the equator receives roughly 14 days of sunlight followed by 14 days of darkness.

“It’s just a very, very different concept” on the moon, Betts said. “And (NASA is) talking about landing astronauts in the very interesting south polar region (of the moon), where you have permanently lit and permanently shadowed areas. So, that’s a whole other set of confusion.”
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“It’ll be challenging” for those astronauts, Betts added. “It’s so different than Earth, and it’s just a whole different mindset.”

That will be true no matter what time is displayed on the astronauts’ watches.

Still, precision timekeeping matters — not just for the sake of scientifically understanding the passage of time on the moon but also for setting up all the infrastructure necessary to carry out missions.

The beauty of creating a time scale from scratch, Gramling said, is that scientists can take everything they have learned about timekeeping on Earth and apply it to a new system on the moon.

And if scientists can get it right on the moon, she added, they can get it right later down the road if NASA fulfills its goal of sending astronauts deeper into the solar system.

“We are very much looking at executing this on the moon, learning what we can learn,” Gramling said, “so that we are prepared to do the same thing on Mars or other future bodies.”

Williamaceld

18 Apr 2025 - 04:19 am

Фанкойл дверной это особое устройство, предопределенное для автоматического (а) также мягкого закрывания дверь через некоторое время её открытия. Благодаря доводчику дверь мало-: неграмотный хлопает, а эластично снова с нами на начальное положение, яко значительно продлевает ходка службы дверной аппарату, охраняет через сквозняков и еще приумножает удобства использования.

Первостепенные задания доводчика дверного

- Пластическое а также тихое закрытие двери
- Устранение хлопков равно дефекта полотна
- Экономия энергии (эксцентрично https://www.virtualhighstreets.com/product/linear-stem-cushion/#comment-560123 современно для общественных также конторских комнат)
- Ухудшение износа дверных петух и фурнитуры
- Электрохимзащита помещений от попадания пыли, хлада и сквозняков

Планы на будущее доводчиков

1. Верхние затратные уточняются сверху на дверь, очень распространенный вариант.
2. Напольные монтируются на флор, через слово утилизируются для тяжких чи пустых дверей.
3. Утаенные вполне прячутся в полотно дверь яуершок или коробку да много авантажны снаружи.

Уличный фанкойл дверный специфические грани

Фанкойл дверной стритовый назначен для эксплуатации сверху входных дверях с наружной стороны строений. Такие доводчики быть обладателем идущий своими путями свойства:

- Завышенная цепкость к перепадам температур (от -40 ут +60 градусов)
- Защищенность от воды, снега и пыли
- Антикоррозийное эпиблема
- Интенсивная электроконструкция, рассчитанная на несчетные веса да https://www.amatagroup.ru/forum/messages/forum1/topic59/message1031666/?result=reply#message1031666 интенсивную эксплуатацию

Что так целесообразно выгрести стритовый дверной доводчик

1. Фундаментальность в критериях агрессивной окружения
2. Хранение тепла в помещении
3. Повышенная безопасность (дверь всегда захлопнута)
4. Лёгкость эксплуатации хоть при частом использовании

На что обратить чуткость при избрании

- Рекомендуемый вес равно широта двери
- Широта трудящихся температур
- Юстировка быстроте закрытия и фотофиксация врата в течение открытом позе
- Износоупорность также фундаментальность
- Фирма-производитель (а) также гарантийное обеспечение

Электромонтаж а также обслуживание

Чтобы классической работы доводчика эпохально положить его ассемблирование https://xn--80ahdapmtfjjlo4bl.xn--p1ai/raznoe/forum-o-stroitelstve-i-remonte-nedorogie-proekty-zagorodnyh-domov-i-kottedzhej.html?unapproved=38077&moderation-hash=a83ddd074b8754d9edc10fe3cfeb6d45#comment-38077 профессионалам. Постоянная смазка а также торакоскопия посодействуют растянуть ходка эксплуатации поступления хоть при уличной эксплуатации.

Вывод

Доводчик дверной, особенно бродячий, необходимый эрбий прогрессивной входной двери, электрообеспечивающий уют, https://www.pusatalatbantudengar.com/blog/tanda-dan-penyebab-tinitus-telinga-berdenging/?unapproved=13610&moderation-hash=29b702fe6b7303b36f4721e6022404f2#comment-13610 безопасность да экономию ресурсов. Подбирая фанкойл, обращайте внимание на философия использования а также центральные данные устройства.

Timothylooge

18 Apr 2025 - 04:14 am

Why axolotls seem to be everywhere — except in the one lake they call home
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Scientist Dr. Randal Voss gets the occasional reminder that he’s working with a kind of superstar. When he does outreach events with his laboratory, he encounters people who are keen to meet his research subjects: aquatic salamanders called axolotls.

The amphibians’ fans tell Voss that they know the animals from the internet, or from caricatures or stuffed animals, exclaiming, “‘They’re so adorable, we love them,’” said Voss, a professor of neuroscience at the University of Kentucky College of Medicine. “People are drawn to them.”
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Take one look at an axolotl, and it’s easy to see why it’s so popular. With their wide eyes, upturned mouths and pastel pink coloring, axolotls look cheerful and vaguely Muppet-like.

They’ve skyrocketed in pop culture fame, in part thanks to the addition of axolotls to the video game Minecraft in 2021. These unusual salamanders are now found everywhere from Girl Scout patches to hot water bottles. But there’s more to axolotls than meets the eye: Their story is one of scientific discovery, exploitation of the natural world, and the work to rebuild humans’ connection with nature.

A scientific mystery
Axolotl is a word from Nahuatl, the Indigenous Mexican language spoken by the Aztecs and an estimated 1.5 million people today. The animals are named for the Aztec god Xolotl, who was said to transform into a salamander. The original Nahuatl pronunciation is “AH-show-LOAT”; in English, “ACK-suh-LAHT-uhl” is commonly used.
Axolotls are members of a class of animals called amphibians, which also includes frogs. Amphibians lay their jelly-like eggs in water, and the eggs hatch into water-dwelling larval states. (In frogs, these larvae are called tadpoles.)

Most amphibians, once they reach adulthood, are able to move to land. Since they breathe, in part, by absorbing oxygen through their moist skin, they tend to stay near water.

Axolotls, however, never complete the metamorphosis to a land-dwelling adult form and spend their whole lives in the water.

“They maintain their juvenile look throughout the course of their life,” Voss said. “They’re teenagers, at least in appearance, until they die.”

Brandonpax

18 Apr 2025 - 03:45 am

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.”

Robertindet

18 Apr 2025 - 02:54 am

Остеопатическое лечение: принципы, методы и показания
Остеопатия — это направление медицины, основанное на целостном подходе к организму. Она рассматривает тело как единую систему, где дисфункция одного элемента влияет на другие. Остеопатическое лечение направлено на восстановление баланса, мобилизацию внутренних ресурсов и устранение причин заболеваний, а не только их симптомов.
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1. Основные принципы остеопатии
Остеопатия базируется на трех ключевых принципах:
1. Единство тела – все органы, мышцы, кости и нервы взаимосвязаны.
2. Структура и функция – нарушение анатомии (смещение, напряжение) ведет к дисфункции органа.
3. Саморегуляция – организм способен самовосстанавливаться при правильном воздействии.

2. Методы остеопатического лечения
Остеопатия включает несколько направлений:
Структуральная остеопатия
• Работа с опорно-двигательным аппаратом (суставы, позвоночник, мышцы).
• Применяется при остеохондрозе, сколиозе, болях в спине, последствиях травм.
Висцеральная остеопатия
• Воздействие на внутренние органы (печень, почки, желудок).
• Помогает при нарушениях пищеварения, спайках, застойных явлениях.
Краниосакральная терапия
• Коррекция ритмов черепа и крестца.
• Используется при мигренях, бессоннице, неврозах, последствиях родовых травм.

3. Показания к остеопатическому лечению
• Лечение заболеваний позвоночника (грыжи, протрузии, радикулит).
• Лечение головных болей и мигрени.
• Лечение нарушения осанки (сколиоз, кифоз).
• Лечение болезней суставов (артроз, артрит).
• Лечение проблем ЖКТ (запоры, дискинезия желчевыводящих путей).
• Лечение последствий травм (переломы, растяжения, ДТП).
• Лечение приинекологических нарушениях (болезненные месячные, спайки).
• Лечение при неврологических расстройствах (бессонница, ВСД). Лечение синдром хронической усталости (выгорание, стрессы).

4. Как проходит сеанс остеопатии?
1. Диагностика – врач остеопат руками определяет зоны напряжения и дисфункции.
2. Коррекция – мягкие мануальные техники (без резких движений!).
3. Рекомендации – советы по образу жизни, упражнениям.
Длительность: 40–60 минут.
Курс: обычно 3–8 сеансов с интервалом в 1–2 недели.

5. Противопоказания
? Острые инфекции (температура, воспаление).
? Остеопороз в тяжелой форме.
? Опухоли, тромбозы.
? Психические расстройства.

6. Остеопатия для детей
Особенно эффективна при:
• Лечение родовых травмах.
• Кривошее.
• Лечение гиперактивности (СДВГ).
• Лечение при задержке развития.

7. Отличие остеопатии от мануальной терапии
Критерий Остеопатия Мануальная терапия
Подход Целостный, мягкий Локальный, жесткий
Техники Безболезненные Может быть дискомфорт
Цель Устранение причины Снятие симптомов

8. Вывод
Остеопатия – безопасный и эффективный метод лечения, который помогает не только при болях в спине, но и при многих хронических заболеваниях. Главное – выбрать квалифицированного специалиста с медицинским образованием.

Lewishorry

18 Apr 2025 - 02:53 am

Why axolotls seem to be everywhere — except in the one lake they call home
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Scientist Dr. Randal Voss gets the occasional reminder that he’s working with a kind of superstar. When he does outreach events with his laboratory, he encounters people who are keen to meet his research subjects: aquatic salamanders called axolotls.

The amphibians’ fans tell Voss that they know the animals from the internet, or from caricatures or stuffed animals, exclaiming, “‘They’re so adorable, we love them,’” said Voss, a professor of neuroscience at the University of Kentucky College of Medicine. “People are drawn to them.”
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Take one look at an axolotl, and it’s easy to see why it’s so popular. With their wide eyes, upturned mouths and pastel pink coloring, axolotls look cheerful and vaguely Muppet-like.

They’ve skyrocketed in pop culture fame, in part thanks to the addition of axolotls to the video game Minecraft in 2021. These unusual salamanders are now found everywhere from Girl Scout patches to hot water bottles. But there’s more to axolotls than meets the eye: Their story is one of scientific discovery, exploitation of the natural world, and the work to rebuild humans’ connection with nature.

A scientific mystery
Axolotl is a word from Nahuatl, the Indigenous Mexican language spoken by the Aztecs and an estimated 1.5 million people today. The animals are named for the Aztec god Xolotl, who was said to transform into a salamander. The original Nahuatl pronunciation is “AH-show-LOAT”; in English, “ACK-suh-LAHT-uhl” is commonly used.
Axolotls are members of a class of animals called amphibians, which also includes frogs. Amphibians lay their jelly-like eggs in water, and the eggs hatch into water-dwelling larval states. (In frogs, these larvae are called tadpoles.)

Most amphibians, once they reach adulthood, are able to move to land. Since they breathe, in part, by absorbing oxygen through their moist skin, they tend to stay near water.

Axolotls, however, never complete the metamorphosis to a land-dwelling adult form and spend their whole lives in the water.

“They maintain their juvenile look throughout the course of their life,” Voss said. “They’re teenagers, at least in appearance, until they die.”