Scientists say skeletal remains found in castle well belong to figure from 800-year-old saga
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Researchers have connected the identity of skeletal remains found in a well at Norway’s Sverresborg castle to a passage in a centuries-old Norse text.

The 800-year-old Sverris saga, which follows the story of the real-life King Sverre Sigurdsson, includes the tossing of the body of a dead man — later known as “Well-man” — down a well during a military raid in central Norway in 1197.
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It’s likely, according to the text, that raiders lobbed the body into the well to poison the main water source for locals, but little else is said about the man or who he was in the saga.

Researchers initially uncovered the bones in the castle’s well in 1938, but they were only able to carry out a visual analysis at the time. Now, scientists have an array of analytical techniques at their disposal, including genetic sequencing and radiocarbon dating.

A new study on the remains, published Friday in the Cell Press journal iScience, reveals unprecedented insights into Well-man’s appearance based on in-depth research on samples of his teeth.

“This is the first time that a person described in these historical texts has actually been found,” said study coauthor Michael D. Martin, a professor in the department of natural history at the Norwegian University of Science and Technology’s University Museum in Trondheim, in a statement.

“There are a lot of these medieval and ancient remains all around Europe, and they’re increasingly being studied using genomic methods.”

The findings not only shed fresh light on what Well-man looked like but also who he was, with a surprising twist about how he ended up in a Norse saga.

This teen became the youngest person to summit the world’s highest peaks. Now he wants others to follow in his footsteps
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Nima Rinji Sherpa’s ears are still tinged black from wind chill, an occupational hazard of climbing to heights where humans struggle to breathe, and where the weather can turn deadly in an instant.

This month, Nima became the youngest person to summit all 14 of the world’s highest peaks, but the 18-year-old Nepalese mountaineer is already getting ready for his next big feat.
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Speaking to CNN via video call from the Nepali capital Kathmandu last week, Nima said he’s taking a couple weeks’ rest before preparing to climb the world’s eighth-highest mountain, Manaslu, with Italian mountaineer Simone Moro – in winter, alpine-style.

“That means we’re climbing an 8,000-meter mountain in winter… There’s no fixed ropes for us, there’s no (supplemental) oxygen for us, there is no support for us. So, it’s like pure human endurance,” Nima said. “It has never been done in the history of mountaineering.”

After that, “I’ll take some rest,” Nima laughed.

On October 9, Nima reached the top of the 8,027-meter (26,335-foot) Shishapangma along with his partner Pasang Nurbu Sherpa. For Nima, it was the final of the “eight-thousanders,” the 14 peaks recognized by the International Climbing and Mountaineering Federation as standing more than 8,000 meters above sea level.

Describing the moment of summiting the final peak as “pure joy,” Nima said his motivation comes from his family, many of whom are renowned mountaineers.

His father, Tashi Lakpa Sherpa, has climbed Everest nine times, and at age 19 became the youngest person to summit without bottled oxygen. His uncle Mingma Sherpa became the first South Asian climber to summit the 14 peaks in 2011.

“My uncles and my father, they are way more successful than I would ever be because they came from a very small village. To even dream about being this successful, for them it was really hard,” Nima said. “I have the privilege that they didn’t have.”

He served with the US Army in Iraq. Now he’s one of Asia’s top chefs and a Netflix ‘Culinary Class Wars’ judge
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From a warzone in Iraq to a Michelin-starred kitchen and a hit Netflix show, chef Sung Anh’s path to the top of Asia’s fine dining scene has been anything but ordinary.

“Just like I did in the US Army, where I volunteered to go to the war, wanting to do something different — I decided to come here to Korea to try something different,” says the Korean-American chef and judge on hit reality cooking show “Culinary Class Wars,” which has just been green-lit for a second season.
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Sung, 42, is the head chef and owner of South Korea’s only three-Michelin-starred restaurant, Mosu Seoul. In recent weeks, he has gained a new legion of fans as the meticulous and straight-talking judge on the new Netflix series. It’s this passion and unwavering drive to forge his own path that’s helped reshape fine dining in his birth home.
Born in Seoul, South Korea’s capital, Sung and his family emigrated to San Diego, California when he was 13.

“We were just a family from Korea, seeking the American Dream,” he says. “As an immigrant family, we didn’t really know English.”

As a teen growing up on the US West Coast, his mind couldn’t have been further from cooking.

“I went to school, got into college, but decided to join the US Army because that’s the only way I thought I could travel,” says the chef.

Over four years of service, he trained in bases across the country, before being deployed to his country of birth, South Korea and — following 9/11 — to the Middle East.

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Scientists say skeletal remains found in castle well belong to figure from 800-year-old saga
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Researchers have connected the identity of skeletal remains found in a well at Norway’s Sverresborg castle to a passage in a centuries-old Norse text.

The 800-year-old Sverris saga, which follows the story of the real-life King Sverre Sigurdsson, includes the tossing of the body of a dead man — later known as “Well-man” — down a well during a military raid in central Norway in 1197.
https://kra16f.cc
кракен
It’s likely, according to the text, that raiders lobbed the body into the well to poison the main water source for locals, but little else is said about the man or who he was in the saga.

Researchers initially uncovered the bones in the castle’s well in 1938, but they were only able to carry out a visual analysis at the time. Now, scientists have an array of analytical techniques at their disposal, including genetic sequencing and radiocarbon dating.

A new study on the remains, published Friday in the Cell Press journal iScience, reveals unprecedented insights into Well-man’s appearance based on in-depth research on samples of his teeth.

“This is the first time that a person described in these historical texts has actually been found,” said study coauthor Michael D. Martin, a professor in the department of natural history at the Norwegian University of Science and Technology’s University Museum in Trondheim, in a statement.

“There are a lot of these medieval and ancient remains all around Europe, and they’re increasingly being studied using genomic methods.”

The findings not only shed fresh light on what Well-man looked like but also who he was, with a surprising twist about how he ended up in a Norse saga.

This teen became the youngest person to summit the world’s highest peaks. Now he wants others to follow in his footsteps
<a href=https://kra16f.cc>Кракен тор</a>

Nima Rinji Sherpa’s ears are still tinged black from wind chill, an occupational hazard of climbing to heights where humans struggle to breathe, and where the weather can turn deadly in an instant.

This month, Nima became the youngest person to summit all 14 of the world’s highest peaks, but the 18-year-old Nepalese mountaineer is already getting ready for his next big feat.
https://kra16f.cc
kra17 cc
Speaking to CNN via video call from the Nepali capital Kathmandu last week, Nima said he’s taking a couple weeks’ rest before preparing to climb the world’s eighth-highest mountain, Manaslu, with Italian mountaineer Simone Moro – in winter, alpine-style.

“That means we’re climbing an 8,000-meter mountain in winter… There’s no fixed ropes for us, there’s no (supplemental) oxygen for us, there is no support for us. So, it’s like pure human endurance,” Nima said. “It has never been done in the history of mountaineering.”

After that, “I’ll take some rest,” Nima laughed.

On October 9, Nima reached the top of the 8,027-meter (26,335-foot) Shishapangma along with his partner Pasang Nurbu Sherpa. For Nima, it was the final of the “eight-thousanders,” the 14 peaks recognized by the International Climbing and Mountaineering Federation as standing more than 8,000 meters above sea level.

Describing the moment of summiting the final peak as “pure joy,” Nima said his motivation comes from his family, many of whom are renowned mountaineers.

His father, Tashi Lakpa Sherpa, has climbed Everest nine times, and at age 19 became the youngest person to summit without bottled oxygen. His uncle Mingma Sherpa became the first South Asian climber to summit the 14 peaks in 2011.

“My uncles and my father, they are way more successful than I would ever be because they came from a very small village. To even dream about being this successful, for them it was really hard,” Nima said. “I have the privilege that they didn’t have.”

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зло и нельзя вмешаться, навести порядок, защитить?
Главный герой этого романа – дон Румата (землянин
Антон), который попадает на планету Арканар
с экспериментальным миром.
На этой планете царит средневековая жестокость, фальшь и борьба за власть.
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Он ученый, который проводит эксперимент.
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<a href="https://vibromera.eu"><img src="https://vibromera.eu/wp-content/uploads/2024/05/Снимок-экра�
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<a href="https://vibromera.eu/content/2253/">rotor balancing</a>

<div>
<h1>Understanding Rotor Balancing: A Comprehensive Overview</h1>

<p>In the realm of mechanical engineering, rotor balancing is a critical process that ensures the optimal performance and longevity of rotating machinery. A rotor, which is any body that rotates about an axis while supported by bearings, must maintain symmetry in mass distribution. When this symmetry is disrupted, unbalanced forces act upon the rotor, leading to vibrations that can cause wear, tear, and even catastrophic failures.</p>

<h2>The Importance of Rotor Balancing</h2>

<p>A perfectly balanced rotor has its mass symmetrically arranged around its axis of rotation. In this ideal state, centrifugal forces acting on the rotor's elements counterbalance each other, resulting in zero net force. However, when disturbances create asymmetry, the rotor experiences unbalanced forces that not only degrade the rotor but also impose dynamic loads on its bearings, contributing to accelerated deterioration.</p>

<h2>Types of Rotor Imbalance</h2>

<p>There are two primary types of rotor imbalance: static and dynamic. Static imbalance occurs when the rotor is stationary, and gravity causes the center of mass to rest at a "heavy point." Conversely, dynamic imbalance becomes apparent only during rotation, as unequal forces act on differing planes of the rotor, creating a torque that results in vibration.</p>

<h3>Categorizations of Rotors</h3>

<p>Understanding the types of rotors is essential for effective balancing. Rotors are classified into rigid and flexible categories based on how much they deform under centrifugal forces. Rigid rotors have negligible deformations, allowing for simpler balancing techniques. In contrast, flexible rotors show significant deformations, complicating balancing efforts and necessitating different mathematical models to address their unique dynamics.</p>

<h2>Methods of Balancing Rotors</h2>

<p>Balancing is achieved through the installation of corrective weights, which are specifically positioned to realign the rotor's center of mass with its axis of rotation. The primary challenge lies in determining both the size and angle of these weights to achieve effective balancing. The process generally involves two common approaches: static and dynamic balancing.</p>

<h3>Static Balancing</h3>

<p>This method addresses unbalances when the rotor is at rest. For instance, if a rotor has a heavy point when not in motion, weights can be added to counteract this. In essence, static balancing ensures that the rotor's center of gravity aligns perfectly with its geometric center.</p>

<h3>Dynamic Balancing</h3>

<p>Dynamic balancing is more complex, as it occurs during rotor operation. It is particularly important for long rotors, which may demonstrate both static and dynamic imbalances simultaneously. This balancing approach requires two compensating weights strategically placed to create torque that offsets the unbalanced forces dynamically encountered during rotation.</p>

<h2>Factors Influencing Rotor Balancing</h2>

<p>Several factors impact the effectiveness of rotor balancing. The first is the frequency of natural vibrations, which can interfere with a rotor’s operational frequency, leading to resonance and significantly amplifying vibrations. Balancing efforts need to consider whether the rotor operates above or below its resonance frequency to avoid excessive vibration.</p>

<h3>Multi-Dimensional Vibration Response</h3>

<p>Vibration responses can manifest in various dimensions, including radial and axial directions. While balancing can mitigate radial vibrations due to unbalance, additional alignment measures may be necessary for vibrations caused by misalignment or other external factors not directly related to rotor imbalance.</p>

<h2>Balancing Devices and Techniques</h2>

<p>To facilitate accurate rotor balancing, various devices and methodologies are employed, including vibration sensors and portable balancing machines. These tools measure vibration amplitudes and phases, allowing engineers to calculate the necessary corrective weights and their placement on the rotor. The efficiency of the balancing process improves significantly with the use of advanced microprocessor-based equipment, enabling quick calculations and automatic adjustments based on measured parameters.</p>

<h2>Quality Assessment in Rotor Balancing</h2>

<p>After a rotor is balanced, it’s essential to evaluate the quality of balancing achieved. Tolerances for residual unbalance are dictated by standards such as ISO 1940-1-2007 and ISO 10816-3:2009, which outline acceptable levels of vibration for various machines. Monitoring residual vibration is vital as it transcends simple measures of unbalance and also considers other parameters affecting machine performance.</p>

<h2>The Future of Rotor Balancing</h2>

<p>As technology continues to evolve, the methodologies for rotor balancing are becoming increasingly sophisticated. Innovations in sensor technology and data analysis software are enhancing the ability to perform quick and precise balancing tasks. Ongoing research into flexible rotor dynamics and resonance management promises to yield even more effective balancing solutions in the future.</p>

<h2>Conclusion</h2>

<p>In summary, rotor balancing is a crucial element in the operation of rotating machinery. Understanding the different types of imbalance, the methods for balancing, and the appropriate assessment techniques are vital for ensuring the integrity and longevity of various mechanical systems. As technology advances, so too will the methods used to achieve optimal rotor performance, safeguarding machinery from the detrimental effects of unbalance and ensuring efficient operation across industries.</p>
</div>
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