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Victordrutt

23 Jan 2025 - 03:54 pm

Scientists have identified an estimated 10% of all species on Earth. Here’s what they found in 2024
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A toothy toadstool. A vegetarian piranha with a distinctive mark. And a pygmy pipehorse floating in the Indian Ocean shallows.

These wild wonders were among the hundreds of previously unknown species of animals, plants and fungi that scientists named and described for the first time in 2024, expanding our surprisingly limited knowledge of Earth’s diversity.

“Scientists estimate that we’ve identified only one-tenth of all species on Earth,” said Dr.
Shannon Bennett, chief of science at the California Academy of Sciences, in a statement.

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“While it is critical to place protections on known threatened species, we must also allocate resources towards identifying unknown species that may be just as important to the functioning of an ecosystem,” Bennett said.

Researchers connected to the institution described 138 new species in 2024, including 32 fish. One standout was a pygmy pipehorse named Cylix nkosi. The seahorse relative was originally found in 2021 in the cool temperate waters surrounding the North Island of New Zealand, but the species described this year was discovered in the subtropical waters off South Africa, expanding the known range of this group to the Indian Ocean

“South African reefs present notoriously difficult diving conditions with rough weather and intense, choppy waves — we knew we only had one dive to find it,” underwater photographer and marine biologist Richard Smith said in a statement.
“This species is also quite cryptic, about the size of a golf tee, but luckily we spotted a female camouflaged against some sponges about a mile offshore on the sandy ocean floor.”

The researchers involved in describing the new species chose nkosi as its name. A reference to the local Zulu word for “chief,” the name reflects the species’ crown-like head shape and acknowledges South Africa’s KwaZulu-Natal province where it was found.

Josephphofs

23 Jan 2025 - 01:56 pm

Scientists have identified an estimated 10% of all species on Earth. Here’s what they found in 2024
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A toothy toadstool. A vegetarian piranha with a distinctive mark. And a pygmy pipehorse floating in the Indian Ocean shallows.

These wild wonders were among the hundreds of previously unknown species of animals, plants and fungi that scientists named and described for the first time in 2024, expanding our surprisingly limited knowledge of Earth’s diversity.

“Scientists estimate that we’ve identified only one-tenth of all species on Earth,” said Dr.
Shannon Bennett, chief of science at the California Academy of Sciences, in a statement.

https://kra26c.cc
kraken зайти
“While it is critical to place protections on known threatened species, we must also allocate resources towards identifying unknown species that may be just as important to the functioning of an ecosystem,” Bennett said.

Researchers connected to the institution described 138 new species in 2024, including 32 fish. One standout was a pygmy pipehorse named Cylix nkosi. The seahorse relative was originally found in 2021 in the cool temperate waters surrounding the North Island of New Zealand, but the species described this year was discovered in the subtropical waters off South Africa, expanding the known range of this group to the Indian Ocean

“South African reefs present notoriously difficult diving conditions with rough weather and intense, choppy waves — we knew we only had one dive to find it,” underwater photographer and marine biologist Richard Smith said in a statement.
“This species is also quite cryptic, about the size of a golf tee, but luckily we spotted a female camouflaged against some sponges about a mile offshore on the sandy ocean floor.”

The researchers involved in describing the new species chose nkosi as its name. A reference to the local Zulu word for “chief,” the name reflects the species’ crown-like head shape and acknowledges South Africa’s KwaZulu-Natal province where it was found.

Eugenehab

23 Jan 2025 - 01:54 pm

The survivors of recent crashes were sitting at the back of the plane. What does that tell us about airplane safety?
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Look at the photos of the two fatal air crashes of the last two weeks, and amid the horror and the anguish, one thought might come to mind for frequent flyers.

The old frequent-flyer adage is that sitting at the back of the plane is a safer place to be than at the front — and the wreckage of both Azerbaijan Airlines flight 8243 and Jeju Air flight 2216 seem to bear that out.
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The 29 survivors of the Azeri crash were all sitting at the back of the plane, which split into two, leaving the rear half largely intact. The sole survivors of the South Korean crash, meanwhile, were the two flight attendants in their jumpseats in the very tail of the plane.

So is that old adage — and the dark humor jokes about first and business class seats being good until there’s a problem with the plane — right after all?

In 2015, TIME Magazine reporters wrote that they had combed through the records of all US plane crashes with both fatalities and survivors from 1985 to 2000, and found in a meta-analysis that seats in the back third of the aircraft had a 32% fatality rate overall, compared with 38% in the front third and 39% in the middle third.

Even better, they found, were middle seats in that back third of the cabin, with a 28% fatality rate. The “worst” seats were aisles in the middle third of the aircraft, with a 44% fatality rate.
But does that still hold true in 2024?

According to aviation safety experts, it’s an old wives’ tale.

“There isn’t any data that shows a correlation of seating to survivability,” says Hassan Shahidi, president of the Flight Safety Foundation. “Every accident is different.”

“If we’re talking about a fatal crash, then there is almost no difference where one sits,” says Cheng-Lung Wu, associate professor at the School of Aviation of the University of New South Wales, Sydney.

Ed Galea, professor of fire safety engineering at London’s University of Greenwich, who has conducted landmark studies on plane crash evacuations, warns, “There is no magic safest seat.”

Djjek

23 Jan 2025 - 06:44 am

DJBoss|

Gregorybib

23 Jan 2025 - 05:29 am

The mysterious cities of the dead carved into the sides of cliffs
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The ancient Lycians knew a thing or two about democracy. Two thousand years ago, the one-time rulers of modern-day Turkey’s southwestern corner had a fully functioning democratic federation that centuries later inspired America’s political structure.

While democracies everywhere might be facing turbulent times, another Lycian legacy remains steadfastly present in the Mediterranean region they used to call home. And this one is focused almost entirely around death.

Drive around the coast of this beautiful region and you’ll never be too far from a spectacular city of the dead – elaborate tombs carved by Lycians into the sides of cliffs overlooking towns, valleys and shorelines.
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That’s not all. Scattered throughout the countryside and towns are imposing sarcophagi that likely once held the remains of high and mighty denizens of Lycia. Indeed, they’re such a familiar sight that they’re often casually included as part of urban landscapes.

For visitors, especially those interested in history, tracking them down is an adventure all on its own.

While some are preserved in ticketed archaeological sites, others are free to explore — but can require Indiana Jones-level exploration skills, clambering up vertiginous hillsides, riding boats and delving into the undergrowth to find.
A good starting place is Fethiye, a low-key port city that’s a useful jumping-off point for great beaches and attractions all along Turkey’s so-called Turquoise Coast riviera. After a day of swimming in those glorious waters, it’s worth a sunset trek to the overlooking cliffs.
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Kevinton

23 Jan 2025 - 12:38 am

New Glenn’s first flight
Blue Origin formally announced the development of New Glenn — which aims to outpower SpaceX’s Falcon 9 rockets and haul spacecraft up to 45 metric tons (99,200 pounds) to orbit — in 2016.
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The vehicle is long overdue, as the company previously targeted 2020 for its first launch.

Delays, however, are common in the aerospace industry. And the debut flight of a new vehicle is almost always significantly behind schedule.

Rocket companies also typically take a conservative approach to the first liftoff, launching dummy payloads such as hunks of metal or, as was the case with SpaceX’s Falcon Heavy debut in 2018, an old cherry red sports car.
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Blue Origin has also branded itself as a company that aims to take a slow, diligent approach to rocket development that doesn’t “cut any corners,” according to Bezos, who founded Blue Origin and funds the company.

The company’s mascot is a tortoise, paying homage to “The Tortoise and the Hare” fable that made the “slow and steady wins the race” mantra a childhood staple.

“We believe slow is smooth and smooth is fast,” Bezos said in 2016. Those comments could be seen as an attempt to position Blue Origin as the anti-SpaceX, which is known to embrace speed and trial-and-error over slow, meticulous development processes.
But SpaceX has certainly won the race to orbit. The company’s first orbital rocket, the Falcon 1, made a successful launch in September 2008. The company has deployed hundreds of missions to orbit since then.

And while SpaceX routinely destroys rockets during test flights as it begins developing a new rocket, the company has a solid track record for operational missions. SpaceX’s Falcon 9 rocket, for example, has experienced two in-flight failures and one launchpad explosion but no catastrophic events during human missions.

Zhedazzizra

22 Jan 2025 - 11:11 pm

Der Balanset-1A: Ein Auswuchtgerät für Rotoren



Der Balanset-1A ist ein hochwertiges Auswuchtgerät, das speziell für die Auswuchtung von Rotoren entwickelt wurde. Mit einem Preis von 1751 Euro bietet er sowohl die Möglichkeit der Ein- als auch der Zweiplanenkorrektur. Die Ausstattung des Geräts umfasst unter anderem Vibrotransducer, einen Phasenwinkelsensor (Laser-Tachometer), eine Messgerätebox (Balanset), einen magnetischen Ständer, eine elektronische Waage, einen Transportkoffer sowie die Software auf einem Flash-Drive.



Die Anzahl der Auswuchtebenen hängt von den konstruktiven Merkmalen des zu wuchtenden Rotors ab. Die Einplanenauswuchtung ("statisch") wird in der Regel für schmale, scheibenförmige Rotoren ohne wesentliche axiale Verschiebungen verwendet, wie zum Beispiel Schleifscheiben, Riemenräder, Schwungräder, Zahnräder, Kupplungen, Spannzangen von Drehmaschinen, schmale Lüfter usw.



Die Zweiplanenauswuchtung ("dynamisch") wird für lange (wellenförmige), zweiachsige Rotoren durchgeführt, wie zum Beispiel Rotoren von Elektromotoren und Generatoren, Kompressoren und Pumpen, Turbinen- und Lüfterräder, breite Schleifscheiben, Spindeln, Wellen von Mühlen mit Schaufeln usw.



Der Prozess der Rotorauswuchtung mit dem Balanset-1A



Der Prozess der Auswuchtung mit dem Balanset-1A von Vibromera umfasst mehrere Schlüsselschritte, von der Vorbereitung des Equipments bis zur Installation von Ausgleichsgewichten.



Vorbereitung des Equipments

Installieren Sie die Schwingungssensoren senkrecht zur Rotationsachse des Rotors. Befestigen Sie den Laser-Tachometer an einem magnetischen Ständer und richten Sie ihn auf das Reflexband am Riemenrad. Schließen Sie die Sensoren an das Gerät an und verbinden Sie das Gerät über USB mit einem Laptop. Starten Sie die Balanset-Software und wählen Sie den Zweiplanenauswuchtmodus aus.



Anfangsmessung der Vibration

Hängen Sie zunächst das Testgewicht auf und notieren Sie das Gewicht und den Installationsradius. Starten Sie den Rotor und messen Sie das anfängliche Vibrationsniveau, um die Amplitude und Phase des anfänglichen Unwuchtzustands zu bestimmen.



Auswuchtung in der ersten Ebene

Platzieren Sie das Testgewicht in der ersten Auswuchtebene entsprechend der Position des ersten Sensors. Starten Sie den Rotor, um das Vibrationsniveau zu messen. Eine Änderung der Amplitude oder Phase um mindestens 20 % deutet darauf hin, dass die Unwucht teilweise korrigiert wurde.



Auswuchtung in der zweiten Ebene

Verschieben Sie das Testgewicht in die zweite Ebene (wo der zweite Sensor installiert ist), starten Sie erneut den Rotor und führen Sie die Messung durch. Diese Daten helfen der Software, die genaue Position und das Gewicht der Ausgleichsgewichte zu berechnen.



Korrektur der Unwucht

Auf Basis dieser Daten schlägt die Balanset-Software Ausgleichsgewichte und deren Installationswinkel für beide Ebenen vor. Entfernen Sie das Testgewicht, bereiten Sie die Ausgleichsgewichte gemäß den Softwareempfehlungen vor und installieren Sie sie unter dem richtigen Winkel in Drehrichtung des Rotors von der ursprünglichen Position des Testgewichts.



Überprüfung und Abschluss der Auswuchtung

Starten Sie den Rotor zur abschließenden Überprüfung der Auswuchtung. Wenn die Vibration auf ein akzeptables Niveau reduziert wurde, ist der Prozess abgeschlossen. Bei Bedarf zeigt die Software an, wo und wie viel zusätzliches Gewicht installiert werden muss.



Die Auswuchtung erfolgt nur für technisch einwandfreie Mechanismen, die ordnungsgemäß an ihren vorgesehenen Stellen befestigt sind. Andernfalls muss der Mechanismus vor der Auswuchtung repariert, in intakte Lager eingebaut und befestigt werden. Der Rotor des Mechanismus muss von Verschmutzungen befreit werden, die die Auswuchtung beeinträchtigen.



Vor dem Messen sollten die Installationsorte ausgewählt und die Schwingungs- und Phasensensoren gemäß den obigen Empfehlungen installiert werden.



Es wird empfohlen, vor der Auswuchtung Messungen im Vibrometer-Modus durchzuführen. Wenn die Gesamtvibrationssumme V1s(V2s) ungefähr mit der Umlaufsumme V1o(V2o) übereinstimmt, kann davon ausgegangen werden, dass die Unwucht des Rotors den Hauptbeitrag zur Mechanismusvibration leistet.



Wenn die Gesamtvibrationssumme V1s(V2s) die Umlaufsumme V1o(V2o) deutlich übersteigt, wird empfohlen, den Mechanismus zu inspizieren – den Zustand der Lager zu überprüfen, die Zuverlässigkeit der Befestigung am Fundament zu überprüfen, das Anschlagen des Rotors an unbewegliche Teile während des Betriebs zu überprüfen, den Einfluss der Vibration anderer Mechanismen usw.



Die Auswuchtung mit dem Balanset-1A bietet eine Vielzahl von Vorteilen, darunter:





Kompaktheit und Portabilität

Intuitive Software

Vielseitigkeit

Hohe Messgenauigkeit

Zugängliche Optionen und Anpassung an Aufgaben

Einfache Schulung und Nutzung

Unterstützung für Serienauswuchtung

Unterstützung für den Betrieb ohne Tachometer

Qualitätsgarantie und Zuverlässigkeit

Kosteneffizienz und Zugänglichkeit





Der Balanset-1A von Vibromera bietet die ideale Lösung für die Auswuchtung von Rotoren in verschiedenen Anwendungen.

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Brianfloxy

22 Jan 2025 - 10:46 pm

New Glenn’s first flight
Blue Origin formally announced the development of New Glenn — which aims to outpower SpaceX’s Falcon 9 rockets and haul spacecraft up to 45 metric tons (99,200 pounds) to orbit — in 2016.
kraken
The vehicle is long overdue, as the company previously targeted 2020 for its first launch.

Delays, however, are common in the aerospace industry. And the debut flight of a new vehicle is almost always significantly behind schedule.

Rocket companies also typically take a conservative approach to the first liftoff, launching dummy payloads such as hunks of metal or, as was the case with SpaceX’s Falcon Heavy debut in 2018, an old cherry red sports car.
https://kra26att.cc
кракен вход
Blue Origin has also branded itself as a company that aims to take a slow, diligent approach to rocket development that doesn’t “cut any corners,” according to Bezos, who founded Blue Origin and funds the company.

The company’s mascot is a tortoise, paying homage to “The Tortoise and the Hare” fable that made the “slow and steady wins the race” mantra a childhood staple.

“We believe slow is smooth and smooth is fast,” Bezos said in 2016. Those comments could be seen as an attempt to position Blue Origin as the anti-SpaceX, which is known to embrace speed and trial-and-error over slow, meticulous development processes.
But SpaceX has certainly won the race to orbit. The company’s first orbital rocket, the Falcon 1, made a successful launch in September 2008. The company has deployed hundreds of missions to orbit since then.

And while SpaceX routinely destroys rockets during test flights as it begins developing a new rocket, the company has a solid track record for operational missions. SpaceX’s Falcon 9 rocket, for example, has experienced two in-flight failures and one launchpad explosion but no catastrophic events during human missions.

Tommytib

22 Jan 2025 - 09:59 pm

New Glenn’s first flight
Blue Origin formally announced the development of New Glenn — which aims to outpower SpaceX’s Falcon 9 rockets and haul spacecraft up to 45 metric tons (99,200 pounds) to orbit — in 2016.
kraken
The vehicle is long overdue, as the company previously targeted 2020 for its first launch.

Delays, however, are common in the aerospace industry. And the debut flight of a new vehicle is almost always significantly behind schedule.

Rocket companies also typically take a conservative approach to the first liftoff, launching dummy payloads such as hunks of metal or, as was the case with SpaceX’s Falcon Heavy debut in 2018, an old cherry red sports car.
https://kra26att.cc
kraken войти
Blue Origin has also branded itself as a company that aims to take a slow, diligent approach to rocket development that doesn’t “cut any corners,” according to Bezos, who founded Blue Origin and funds the company.

The company’s mascot is a tortoise, paying homage to “The Tortoise and the Hare” fable that made the “slow and steady wins the race” mantra a childhood staple.

“We believe slow is smooth and smooth is fast,” Bezos said in 2016. Those comments could be seen as an attempt to position Blue Origin as the anti-SpaceX, which is known to embrace speed and trial-and-error over slow, meticulous development processes.
But SpaceX has certainly won the race to orbit. The company’s first orbital rocket, the Falcon 1, made a successful launch in September 2008. The company has deployed hundreds of missions to orbit since then.

And while SpaceX routinely destroys rockets during test flights as it begins developing a new rocket, the company has a solid track record for operational missions. SpaceX’s Falcon 9 rocket, for example, has experienced two in-flight failures and one launchpad explosion but no catastrophic events during human missions.

Edwardtot

22 Jan 2025 - 07:13 pm

New Glenn’s first flight
Blue Origin formally announced the development of New Glenn — which aims to outpower SpaceX’s Falcon 9 rockets and haul spacecraft up to 45 metric tons (99,200 pounds) to orbit — in 2016.
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The vehicle is long overdue, as the company previously targeted 2020 for its first launch.

Delays, however, are common in the aerospace industry. And the debut flight of a new vehicle is almost always significantly behind schedule.

Rocket companies also typically take a conservative approach to the first liftoff, launching dummy payloads such as hunks of metal or, as was the case with SpaceX’s Falcon Heavy debut in 2018, an old cherry red sports car.
https://kra26att.cc
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Blue Origin has also branded itself as a company that aims to take a slow, diligent approach to rocket development that doesn’t “cut any corners,” according to Bezos, who founded Blue Origin and funds the company.

The company’s mascot is a tortoise, paying homage to “The Tortoise and the Hare” fable that made the “slow and steady wins the race” mantra a childhood staple.

“We believe slow is smooth and smooth is fast,” Bezos said in 2016. Those comments could be seen as an attempt to position Blue Origin as the anti-SpaceX, which is known to embrace speed and trial-and-error over slow, meticulous development processes.
But SpaceX has certainly won the race to orbit. The company’s first orbital rocket, the Falcon 1, made a successful launch in September 2008. The company has deployed hundreds of missions to orbit since then.

And while SpaceX routinely destroys rockets during test flights as it begins developing a new rocket, the company has a solid track record for operational missions. SpaceX’s Falcon 9 rocket, for example, has experienced two in-flight failures and one launchpad explosion but no catastrophic events during human missions.