Everything below concerns reconstitution. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2025-11-08. Where a claim depends on a specific study, the study is described rather than over-claimed.
Lyophilization removes water from a frozen material by sublimation under reduced pressure. The process begins with freezing, which converts liquid water into ice and fixes the structure of the sample. After freezing, primary drying lowers pressure so ice changes directly to vapor without passing through a liquid phase. Secondary drying then removes bound water that remains after ice sublimation. The result is a dry, porous solid that often retains its original shape.
The low pressure used during drying allows water vapor to move from the ice surface to a cold condenser. Energy supplied as heat drives sublimation but must stay below the collapse temperature of the frozen matrix. If the product becomes too warm, the frozen structure may soften or melt, reducing pore formation and slowing drying. Formulations often include bulking agents, stabilizers, or buffers to support a rigid cake. The final moisture content depends on formulation, freezing rate, and the length of secondary drying.
Stability studies examine how temperature, humidity, and time influence a lyophilized product. Accelerated conditions provide early information about degradation pathways, while long-term studies support shelf-life claims. The glass transition temperature of the dried formulation can indicate its physical stability, and storage above this temperature may increase molecular mobility and lead to collapse or aggregation. Container closure integrity also matters because moisture or oxygen ingress can degrade the product, so vial stoppers and seals are part of the quality system.
Handling and storage practices aim to keep the cake intact and dry. Vials are typically stored upright at controlled temperatures, often between 2 °C and 8 °C or at -20 °C for longer-term use. Reconstitution involves adding a suitable diluent and gently mixing until the solid dissolves. Shaking or rapid injection of diluent can create foam or damage sensitive molecules. Once reconstituted, the product may require refrigeration and use within a defined period.
| Property | Value | Notes |
|---|---|---|
| Primary phase change | Sublimation | Ice changes directly to vapor under reduced pressure |
| Typical chamber pressure | 0.01–0.5 mbar (1–50 Pa) | Below the triple point of water; product-specific |
| Typical product temperature during primary drying | −40 °C to −10 °C | Kept below collapse temperature |
| Typical residual moisture | 0.5–3% w/w | Target range varies by formulation and use |
| Common synonyms | Freeze-drying; lyophilisation | Lyophilization is the US spelling |
=== Directed evolution === Directed evolution of an enzyme is a repetitive process of creating random genetic mutations, screening for a target phenotype, and selecting the most robust variant(s) for further modification. The ability of humankind to use directed evolution to optimize enzymes for biotechnological purposes is largely limited by the throughput of screening tools and methods and the simplicity of their use. Due to the iterative nature of directed evolution and the necessity for large libraries, directed evolution at the macroscale can be a costly endeavor. As such, performing experiments at the microscale through droplet-based microfluidics provides a significantly cheaper alternative to macroscopic equivalents. Various approaches price the directed evolution through droplet microfluidics under $40 for a screen of a 106–107 sized gene library, while the corresponding macroscale experiment is priced at approximately $15 million. Additionally, with screening times that range from 300 to 2000 droplets sorted per second, droplet-based microfluidics provides a platform for significantly accelerated library screening such that gene libraries of 107 can be sorted well within a day. Droplet-based microfluidic devices make directed evolution accessible and cost effective. Many different approaches to device construction of droplet-based microfluidic devices have been developed for directed evolution in order to have the capacity to screen a vast variety of different proteins, pathways, and genomes.
=== Filming === Filming began with the first round, which was shot through July 18–22, 2024, inside of Allegiant Stadium in Las Vegas, with a total of 2,000 contestants attending. This round is released on YouTube. The Beast City part of the competition that was featured in the first four, sixth, eighth and ninth episode of the TV series as well as a second YouTube video promoting the series featuring 20 eliminated contestants competing for $500,000, was filmed with the remaining 1,000 contestants at Downsview Park Studios in Toronto, Ontario, Canada, in August of that year. The "Beast Island" part of the competition featured in the fourth to sixth episodes, along with the tenth episode of the show was filmed at the uninhabited La Vivienda Island, which is located in the Pearl Islands, Panama. The filming broke 44 Guinness World Records, including the largest physical cash prize on set ($5,000,000), the most prize money turned down on a competitive reality TV show ($1,000,000), the largest prize fund awarded for a competitive reality TV show ($10,000,000), and the most money won in a single episode of a competitive reality TV show ($2,020,000), and a page in the 2026 Guinness Book of World Records was focused on the show.
Before the British prime minister left Rhodesia on 30 October 1965, he proposed a Royal Commission to gauge public opinion in the colony regarding independence under the 1961 constitution, possibly chaired by the Rhodesian Chief Justice Sir Hugh Beadle, which would report its findings to both the British and Rhodesian Cabinets. Wilson confirmed in the House of Commons two days later that he intended to introduce direct British control over the Rhodesian parliamentary structure to ensure that progress was made towards majority rule. Stalemate drew closer as the Rhodesian Cabinet resolved that since Wilson had ruled out maintenance of the status quo, its only remaining options were to trust in the Royal Commission or declare independence. When the terms for the commission's visit were presented to Smith, he found that contrary to what had been discussed during the British prime minister's visit, the Royal Commission would operate on the basis that the 1961 constitution was unacceptable to the British government, and that Britain would not commit itself to accepting the final report. Smith said these conditions amounted to a "vote of no confidence in [the commission] before they commenced", and therefore rejected them. "The impression you left with us of a determined effort to resolve our constitutional problem has been utterly dissipated", he wrote to Wilson on 5 November.
=== Microfaunal interactions === The apothecia of Xanthoria parietina also host microscopic animals. Members of the rotifer genus Philodina have been observed feeding on the lichen's ascospores present on apothecial surfaces. Individual rotifers can accumulate several dozen spores, and when ingesting 20 or more spores, about 15% remain viable and capable of germination after excretion. These findings indicate that rotifers may act as dispersal vectors, dislodging and releasing viable spores in new locations.
Sources: en.wikipedia.org
The ILEA had fought off one attempt to abolish it in 1980. The abolition of the GLC, announced in 1983, led to another attempt to get rid of the ILEA, but the Inner London Boroughs were adjudged not ready to handle education services. The Conservative government was led by Margaret Thatcher, who had grown to dislike the ILEA as over-spending and over-bureaucratic while Education Secretary in the early 1970s, and would have liked to abolish it. Backbench Conservative MPs continued to oppose the continuation of the ILEA. The Education Reform Bill of Kenneth Baker proposed to allow Boroughs who wanted to opt out of the ILEA and become education authorities. However, the Government's hand was forced when an amendment was tabled in the House of Commons by Norman Tebbit and supported by Michael Heseltine to abolish the ILEA altogether. This unlikely alliance was particularly notable as Tebbit and Heseltine represented very different ideological wings of the Conservative Party. It was also the source of some local controversy at the time, as both members represented constituencies (Chingford and Henley respectively) outside the ILEA area. The Government announced on 4 February 1988 that it would accept the Tebbit/Heseltine amendment and abolish the ILEA in 1990 as part of the Education Reform Act 1988. Once the Bill was passed, the ILEA then complied with this decision in the interests of education. The Inner London boroughs then became education authorities, and remain so today.
=== Unemployment === In 2007, women represented 45% of the active workforce (approximately 11.2 million) and had an unemployment rate of 9.1%, compared to 7.8% for men. By 2012, unemployment rose to 10% for women and 9.7% for men. Since 2014, the male unemployment rate has exceeded that of women, according to INSEE data.
=== Healthcare === On 11 January, Lula signed into law the "National Policy for the Prevention of Self-Mutilation and Suicide", created by the Health Ministry with the objective of giving mental health support for public security agents. On 20 January, Lula signed a bill, classifying community and disease control agents as health professionals. Also on 20 January, under pressure from religious entities, Lula created the "Department of Support for Therapeutic Communities", aimed at treating drug addicts; after the measure was criticized by human rights organizations, the Ministry of Social Development and Fight against Hunger announced that it would review the decision. The Brazilian Association of Mental Health had also spoken out against the measure in a repudiation note. On 8 March, International Women's Day, Lula announced the creation of the "Programme for the Protection and Promotion of Menstrual Dignity", which provides distribution of menstrual pads by the Sistema Único de Saúde (SUS) to people in vulnerable situations, below the Poverty threshold. The document regulates the Law nº 14.214/2021, which had been vetoed by Jair Bolsonaro in 2021. 8 million people will benefit from the initiative, according to specialists, with an investment of 418 million reals per year, according to the Ministry of Health.
In Buddhism and Art in Gandhāra and Kucha: Buddhist Culture along the Silk Road; Gandhāra, Kucha, and Turfan, Section I, edited by Miyaji Akira, pp. 125–63. Kyoto: Ryukoku University. Howard, Angela Falco; Vignato, Giuseppe (2015). Archaeological and Visual Sources of Meditation in the Ancient Monasteries of Kuca. Leiden: Brill. ISBN 9789004278578. Le Coq, Albert von (1913). Chotscho: Facsimile-Wiedergaben der wichtigsten Funde der 1. Kgl. Preuss. Expedition nach Turfan in Ostturkistan. Berlin. (1982). Along the ancient silk routes: Central Asian art from the West Berlin State Museums. Exhibition from the Museum für Indische Kunst, Staatliche Museen Preussischer Kulturbesitz, Berlin and Federal Republic of Germany at the Metropolitan Museum of Art, New York. Morita, Miki (2015). "The Kizil Paintings in the Metropolitan Museum" in The Metropolitan Museum Journal, vol. 50, pp. 115–136. Vignato, Giuseppe (2006). "Archaeological Survey of Kizil, Its Groups of Caves, Districts, Chronology and Buddhist Schools" in East and West (Rome) 56/4: 359–416. Zin, Monika (2007). "The Identification of the Kizil Paintings II [3. Sudåya, 4. Brhaddyuti]" in Indo-Asiatische Zeitschrift (Berlin) 11: 43–52. Encyclopedia of Buddhist Art 世界佛教美術圖說大辭典. FGS. Archived from the original on 2021-01-21. Retrieved 2021-01-27.
BIA Separations was formed in 1998 by a group of scientists in Ljubljana, Slovenia to commercialize a new chromatographic resin based on monolith technology. Monolithic resin was developed independently by three different laboratories in late 1980s led by Hjertén, Švec and Tennikova. The company was one of the few Slovenian companies to receive venture capital funding at that time-Horizonte Venture Management realizing the potential of monoliths made the initial investment in the company. During that year, BIA Separations released its first commercial product marketed under the trade name of CIM (Convective Interaction Media). The new technique was named HPMC (High Performance Monolith Chromatography). During the 1999 and 2000s, the company promoted this new platform technology to the scientific and business community and registered several patents. In 2007 the company headquarters moved to Villach, Austria. In 2011 BIA Separations entered a strategic partnership with Japan Synthetic Rubber Corporation, a Japanese company producing synthetic materials. A strategic partnership agreement with Showa Denko K.K. (SDK) was signed in 2012.
Sources: en.wikipedia.org
=== Radiation shielding === Depleted uranium is the best radiation shielding by weight, due to the high atomic weight of the uranium atoms; materials are more able to block radioactivity the higher their atomic weight, and uranium is one of the heaviest natural elements. Lead, the heaviest stable element, is the most common low-cost alternative, but a lead shield needs to be about three times as thick as a DU shield to provide the equivalent protection. Uranium also has by far a higher melting point 2,070 °F (1,130 °C), and its tensile strength is similar to that of steel. Industrial radiography cameras include a very high activity gamma radiation source (typically Ir-192 with an activity above 10 TBq). Depleted uranium is often used in the cameras as a shield to protect individuals from the gamma source. Typically, the uranium shield is supported and enclosed in polyurethane foam for thermal, mechanical and oxidation protection.
==== Role of the brain ==== The brain stem can control food intake, because it contains neural circuits that detect hunger and satiety signals from other parts of the body. The brain stem's involvement of food intake has been researched using rats. Rats that have had the motor neurons in the brain stem disconnected from the neural circuits of the cerebral hemispheres (decerebration), are unable to approach and eat food. Instead, they must obtain their food in a liquid form. This research shows that the brain stem does in fact play a role in eating. There are two peptides in the hypothalamus that produce hunger, melanin concentrating hormone (MCH) and orexin. MCH plays a bigger role in producing hunger. In mice, MCH stimulates feeding and a mutation causing the overproduction of MCH led to overeating and obesity. Orexin plays a greater role in controlling the relationship between eating and sleeping. Other peptides in the hypothalamus that induce eating are neuropeptide Y (NPY) and agouti-related protein (AGRP). Satiety in the hypothalamus is stimulated by leptin. Leptin targets the receptors on the arcuate nucleus and suppresses the secretion of MCH and orexin. The arcuate nucleus also contains two more peptides that suppress hunger. The first one is cocaine- and amphetamine-regulated transcript (CART), the second is α-MSH (α-melanocyte-stimulating hormone).
== Etymology == The word sphinx comes from the Greek Σφίγξ, associated by folk etymology with the verb σφίγγω (sphíngō), meaning "to squeeze", "to tighten up". This name may be derived from the fact that lions kill their prey by strangulation, biting the throat of prey and holding them down until they die. However, the historian Susan Wise Bauer suggests that the word "sphinx" was instead a Greek corruption of the Egyptian name "shesepankh", which meant "living image", and referred rather to the statue of the sphinx, which was carved out of "living rock" (rock that was a contiguous part of the stony body of the Earth, shaped, but not cut away from its original source), than to the beast itself.
== External links == Histology image: 08201loa – Histology Learning System at Boston University – "Connective Tissue: unilocular (white) adipocytes " Histology image: 04901lob – Histology Learning System at Boston University – "Connective Tissue: multilocular (brown) adipocytes"
Sources: en.wikipedia.org
Lyophilization relies on sublimation, so water moves from solid ice to vapor without becoming liquid. The material is frozen, pressure is reduced, and controlled heat is supplied. Vapor is captured on a cold condenser, leaving a dry porous solid.
The process has three main stages: freezing, primary drying, and secondary drying. Freezing sets the ice structure, primary drying removes free ice, and secondary drying removes bound water. Each stage uses specific temperature, pressure, and time settings.
No, it is a drying method rather than a sterilization method. Removing water can limit microbial growth, but it does not reliably kill microorganisms. Sterility must come from separate steps such as filtration, heat treatment, or aseptic processing.
Residual moisture can influence chemical degradation, cake collapse, and long-term stability. Low moisture levels usually improve stability, but each product has an optimal range.