Urs Stammbach is a Swiss biochemist known for his work in the fields of molecular biology and biochemistry, particularly in areas related to genetic research and chromatin biology.

As of my last update in October 2023, Zlil Sela is not widely recognized as a notable figure or concept in popular culture, academia, or public discourse. It's possible that Zlil Sela could refer to a private individual or a niche subject that hasn't gained widespread attention.

Zvonimir Janko is a Croatian mathematician known for his contributions to various fields within mathematics, particularly in the areas of topology and functional analysis. He has authored numerous papers and is recognized for his work in mathematics education as well.

"Gulliver's Travels" is a novel by Jonathan Swift, published in 1726, that tells the story of Lemuel Gulliver, a ship's surgeon who embarks on an adventurous journey to various fantastical lands. Since its publication, the novel has inspired several film adaptations and variations.

"Gulliver's Travels" is a miniseries adaptation of Jonathan Swift's classic 1726 novel of the same name. The miniseries, which aired in 2010, is a two-part television film that reimagines the original story while maintaining its satirical themes.

In Jonathan Swift's satirical novel "Gulliver's Travels," Yahoos are a fictional race of beings that resemble humans but are depicted as primitive, base, and brutish creatures. They embody the worst aspects of humanity, such as greed, irrationality, and savagery, and are presented as a stark contrast to the more rational and civilized Houyhnhnms, who are intelligent horses that govern their society through reason and virtue.

"Compositions" by György Ligeti refers to the body of work created by the Hungarian composer known for his avant-garde and innovative musical styles. Ligeti is celebrated for his unique approach to texture, sonority, and rhythm, often employing complex polymetric structures and microtonal techniques. His notable works include chamber music, orchestral pieces, vocal compositions, and music for films, such as "2001: A Space Odyssey.

**Half-Life** is a first-person shooter video game developed by Valve Corporation and released in November 1998. It is widely regarded as one of the most influential games in the genre, known for its immersive storytelling, innovative gameplay mechanics, and advanced artificial intelligence.

Planet Half-Life is a community-driven website dedicated to the "Half-Life" video game series, which was developed by Valve Corporation. The site serves as a hub for news, updates, mods, and discussions related to "Half-Life" and its various iterations, including spin-offs and fan-made content.

**Half-Life 2** is a first-person shooter video game developed by Valve Corporation, released in November 2004. It is the sequel to the original **Half-Life**, released in 1998. The game follows the protagonist, Gordon Freeman, who wakes up several years after the events of the first game to find Earth under the control of an alien empire known as the Combine.

The fractional quantum Hall effect (FQHE) is a phenomenon that occurs in two-dimensional electron systems subjected to strong magnetic fields and low temperatures. This effect is characterized by the existence of quantized Hall conductance at fractional values of the fundamental quantum of conductance, which is e²/h, where "e" is the charge of an electron and "h" is Planck's constant. The FQHE was first observed in 1982 by David Thouless, F. Duncan M.

Hamilton's optico-mechanical analogy is a conceptual framework that draws parallels between optical phenomena and mechanical systems within the context of classical mechanics. It is fundamentally associated with the principles of Hamiltonian mechanics, which reformulate classical mechanics using the Hamiltonian function, focusing on energy and phase space. The key idea behind the analogy is to describe optical systems (such as light rays) in terms of mechanical variables (such as position and momentum).

Jacobi coordinates are a system of coordinates used in the study of many-body problems in physics, particularly in celestial mechanics and molecular dynamics. They are named after the mathematician Karl Gustav Jacob Jacobi. This coordinate system is especially useful for simplifying the analysis of systems of particles by transforming the coordinates to better exploit the symmetries inherent in the problem. In a typical application, Jacobi coordinates are used to describe the positions of \( n \) particles.

A Belleville washer, also known as a disc spring or conical spring washer, is a type of spring washer that has a conical shape. It is designed to provide a flexible and load-bearing capability in various applications. The unique shape allows it to store energy and to exert a force when compressed, making it useful for maintaining tension, compensating for fastener looseness, and absorbing shock or vibration.

As of my last update in October 2023, there is no widely recognized figure, term, or concept known as "Serguei Palto." It's possible that it could be a reference to a lesser-known individual, a character in a story, or a topic that has emerged after my knowledge was last updated.

A **powerful number** is a positive integer \( n \) such that for every prime \( p \) that divides \( n \), \( p^2 \) also divides \( n \). In other words, if a prime number appears in the factorization of a powerful number, it must appear with an exponent of at least 2.

Non-autonomous mechanics is a branch of mechanics that deals with systems whose governing equations change with time. Unlike autonomous systems, where the system's behavior is determined solely by its current state, non-autonomous systems explicitly depend on time. This means that the forces or constraints affecting the system can vary with time, leading to a time-dependent evolution of the system's state.

The Carpentier joint, also known as the Carpentier-Edwards joint, is a type of biologically derived joint used in reconstructive heart surgery, particularly in procedures involving the heart valves. It is typically used in the context of mitral valve repair. The joint provides a means of reattaching or supporting the valve leaflets while allowing for natural movement and function of the heart valves.

Bearings are mechanical components that facilitate rotational or linear motion by reducing friction between moving parts. They support and guide moving elements, such as shafts, in machinery and equipment, ensuring smooth operation and minimizing wear. There are several types of bearings, including: 1. **Ball Bearings**: Use spherical balls to maintain the separation between the bearing races. They are widely used due to their ability to handle both radial and axial loads.