Phase-change materials (PCMs) are substances that absorb and release thermal energy during phase transitions, typically between solid and liquid states. These materials can store and release large amounts of energy with relatively small changes in temperature, making them effective for thermal management applications. Here are key points about phase-change materials: 1. **Phase Transition**: PCMs undergo a phase change when they are heated or cooled. Common transitions include solid to liquid (melting) and liquid to solid (freezing).

Peroxycarbonate refers to a class of compounds containing the peroxycarbonate anion (C2O6²⁻), which consists of carbonate groups (CO3) connected by peroxy (–O-O–) linkages. One of the most studied examples is sodium percarbonate, which is a solid form of hydrogen peroxide (H2O2) that also releases carbonate anions when dissolved in water.

Hanna Reisler is a distinguished scientist known for her contributions to the field of chemistry, particularly in the area of physical chemistry and molecular dynamics. She has conducted significant research involving chemical reactions and the behavior of molecules at the molecular level. Reisler has published numerous scientific papers and has been involved in various academic and research initiatives. Additionally, she may be associated with institutions that focus on scientific research and education.

In biochemistry, the term "steady state" refers to a condition in which the concentrations of reactants and products in a biological system remain relatively constant over time, despite ongoing processes of metabolism, synthesis, and degradation. This concept is particularly important in enzyme kinetics and cellular metabolism. In a steady-state system: 1. **Rate of Input Equals Rate of Output**: The rate at which substrates are converted into products is equal to the rate at which those products are consumed or converted into other compounds.

The theory of solar cells encompasses the principles of how solar cells convert sunlight into electricity. Solar cells are devices that convert light energy directly into electrical energy through the photovoltaic effect. Here’s an overview of the underlying concepts: ### 1. **Photovoltaic Effect** The photovoltaic effect is the fundamental principle behind solar cells. When light photons hit a material (typically a semiconductor), they can transfer their energy to electrons in that material.

Artillery specialty refers to a branch of military service that focuses on the use of large-caliber guns, howitzers, and rocket systems to provide indirect fire support for ground troops. This specialty includes the operation, maintenance, and employment of different types of artillery systems to engage and destroy enemy forces, fortifications, and equipment from a distance.

Georg-Maria Schwab is not a widely recognized figure in mainstream media or notable historical records as of my last knowledge update in October 2021. It's possible that he may refer to a private individual, or he might have gained recognition in a niche area post-2021.

Vapor pressure osmometry is an analytical technique used to determine the osmotic concentration of a solution by measuring its vapor pressure. The principle behind this method is based on the colligative properties of solutions, specifically how the presence of solute particles affects the vapor pressure of a solvent.

Walter Metcalf is a prominent American chemist known for his contributions to the field of chemistry, particularly in the areas of organic and materials chemistry. He has made significant advancements in various chemical processes and has been involved in educational and research initiatives. However, specific details about his research, publications, or career may require access to specialized academic resources or databases.

Albert Fredrick Ottomar Germann does not appear to correspond to a widely recognized figure, event, or concept in historical, scientific, or popular context based on the information available up to October 2023. It could be a name of a private individual or a lesser-known person, possibly related to a specific niche or local context.

Claire Vallance could refer to a person, a character, or possibly a fictional name, but there isn't specific information available about an individual by that name in well-known contexts or databases up to October 2023.

Coastal morphodynamics is the study of the processes and interactions that shape coastal landforms and environments over time. It combines aspects of geology, oceanography, sedimentology, and environmental science to understand how various factors influence coastal landscapes, including waves, tides, currents, and human activities. Key elements of coastal morphodynamics include: 1. **Sediment Transport**: The movement of sediments along the coast due to wave action, currents, and wind.

Edge contraction is a fundamental operation in graph theory that involves modifying a given graph by merging two adjacent vertices into a single vertex. This operation is often used in various algorithms and theoretical contexts, such as simplifying graphs, network flow problems, and studying graph properties. Here's how edge contraction works: 1. **Consider an edge** \(e\) between two vertices \(u\) and \(v\) in a graph \(G\).

Harry Clary Jones was an American architect known for his significant contributions to architectural design and urban planning in the early 20th century. He was particularly active in the Richmond, Virginia area, where he designed a number of notable buildings. His work often reflected the architectural styles of the time, including neoclassical and colonial revival influences.

John Krige is a prominent figure in the field of the history of science and technology, particularly known for his work related to the history of the scientific community, Cold War science, and the role of science in international relations. He has contributed significantly to the understanding of how scientific knowledge is produced and shared across borders, with a particular focus on the American and European contexts.

The Lynx–Ursa Major Filament is a large-scale structure in the universe that is part of the cosmic web, consisting of a series of galaxy clusters and groups interconnected by vast amounts of dark matter and gas. This filament stretches through the constellations Lynx and Ursa Major and is notable for its substantial density of galaxies, making it a significant feature for astronomers studying the large scale structure of the universe.

Non-Gaussianity refers to the deviation of a probability distribution from a Gaussian (normal) distribution. In a Gaussian distribution, data is symmetrically distributed around the mean, with most values clustering around the center and fewer values appearing as you move farther from the mean. The characteristics of a Gaussian distribution can be completely described by its mean and variance. When data exhibits non-Gaussianity, it means that its distribution does not follow this normal pattern.

The El Niño–Southern Oscillation (ENSO) is a climate pattern that describes the periodic fluctuations in sea surface temperatures and atmospheric conditions in the central and eastern tropical Pacific Ocean. ENSO has three phases: 1. **El Niño**: This phase is characterized by warmer-than-average sea surface temperatures in the central and eastern Pacific. It tends to occur every 2 to 7 years and can last several months to a couple of years.

"Big Brake" usually refers to a performance upgrade for vehicles, specifically concerning the braking system. It involves installing larger brake components—such as rotors, calipers, and pads—in order to enhance stopping power, heat dissipation, and overall braking performance. The main benefits of a big brake system include: 1. **Increased Stopping Power**: Larger rotors provide more surface area for the brake pads to grip, which can lead to shorter stopping distances.

Dipole anisotropy typically refers to a directional dependence in a physical quantity, often observed in the context of cosmic phenomena or fields. In cosmology, for example, dipole anisotropy is often discussed in relation to the Cosmic Microwave Background (CMB) radiation. In this context, the CMB is the afterglow of the Big Bang, and while it is generally uniform, it does exhibit slight variations in temperature that can be analyzed.