The short version of Stability study fits in a sentence. The long version — which is the one that helps — is below.
Reviewed 2025-12-03. Anything still debated is marked as such rather than presented as settled.
Storage stability depends on water content, oxygen exposure, and temperature. Lyophilized solids are hygroscopic and can absorb water if exposed to humid air. Vials are usually sealed under vacuum or inert gas with rubber stoppers and aluminum crimps. Storage temperatures range from room temperature to refrigerated or frozen conditions depending on the material. Stability studies track potency, moisture, and physical form over time. Accelerated conditions can reveal sensitivity but may not predict long-term behavior.
Analytical methods for lyophilized materials include X-ray diffraction for crystallinity, differential scanning calorimetry for thermal transitions, and scanning electron microscopy for pore morphology. Moisture sorption analysis shows how the cake responds to humidity. These methods help distinguish amorphous from crystalline states and detect phase changes. Open questions remain about how pore structure changes during long-term storage and how best to predict collapse under varied conditions. Comparisons across studies are complicated by differences in formulation, cycle, and storage history.
Reconstitution involves adding a suitable diluent, often sterile water or a buffer, to the dried cake. Gentle swirling or inversion helps dissolve the material without creating excessive foam. The time required for complete dissolution can range from seconds to several minutes and depends on the cake structure and the diluent. Improper reconstitution, such as vigorous shaking or using the wrong diluent, can cause protein aggregation or loss of activity. After reconstitution, the product may have a limited shelf life and should be used according to its labeling.
Lyophilized products are typically hygroscopic and require protection from moisture during storage. Manufacturers seal them in glass vials, often under vacuum or an inert gas such as nitrogen. The container closure system, including the stopper and crimp seal, must prevent water vapor ingress. Storage temperature varies from controlled room temperature to refrigerated or frozen conditions, depending on the formulation. Humidity-controlled environments are essential because even brief exposure to ambient air can degrade the product.
| Property | Value | Notes |
|---|---|---|
| Appearance | White to off-white porous cake | Color and texture vary with formulation. |
| Reconstitution time | Seconds to several minutes | Depends on cake porosity, excipients, and diluent. |
| Typical moisture level | 0.5-3% w/w | Lower values suit hydrolysis-sensitive materials. |
| Common moisture method | Karl Fischer titration | Coulometric mode is common for low water levels. |
| Typical storage temperature | 2-8 °C or ambient | Some products require frozen storage; protect from humidity. |
Regulatory expectations for lyophilized products focus on consistent manufacture and documented stability. Batches are often monitored for moisture, appearance, potency, and sterility where applicable. Process parameters such as shelf temperature, chamber pressure, and drying time are recorded and controlled within validated ranges. Open questions remain about how best to predict long-term stability from short accelerated studies, especially for complex biologics. Variations in freezing rate and ice crystal size can produce differences that are not always visible but may affect performance.
After drying, a lyophilized product is usually sealed under vacuum or an inert gas to limit moisture uptake. Residual water content is measured because small changes can alter chemical stability and cake appearance. Storage temperature depends on the material; many biological products are kept at 2–8 °C, while some require −20 °C or colder. Exposure to ambient humidity during handling can cause the porous solid to absorb water and collapse. Container closures and stoppers are therefore selected for low moisture transmission and compatibility.
Storage conditions depend on the formulation and the intended shelf life. Many pharmaceutical and biological freeze-dried products are kept at 2–8 °C, while some stable foods and reagents tolerate room temperature. Others require −20 °C or colder to slow chemical degradation or aggregation. Protection from light and oxygen is common because oxidation can continue in the dry state. Stability studies usually monitor potency, appearance, moisture, and reconstitution time over months or years. Predictions from accelerated studies are useful but may not fully capture real-time changes.
Quality control for freeze-dried lots combines visual inspection with instrumental tests. Cake appearance, color, and shrinkage are recorded against a reference, while residual moisture is measured by Karl Fischer titration or loss on drying. Thermal analysis can reveal phase transitions and crystallization events, and X-ray diffraction distinguishes amorphous from crystalline solids. Microbiological tests and container closure integrity checks are also routine for sterile products. Analytical methods must be validated for the matrix, because excipients and low moisture can affect accuracy. Open questions include how best to predict long-term stability from short-term data.
Lyophilized solids are often hygroscopic, so handling occurs in controlled low-humidity areas or glove boxes when the material is exposed. Vials remain sealed with elastomeric stoppers and aluminum crimps until use, because airborne moisture can raise residual water and shorten shelf life. The porous cake is fragile and may crack, shrink, or powder during transport. Personnel typically avoid repeated warming and cooling of sealed units, which can draw moisture through closures. These practices aim to preserve the low water content achieved during drying.
After lyophilization, the product is usually a porous cake or powder with a large internal surface area. This structure can absorb moisture quickly if exposed to humid air, so vials are sealed under vacuum or an inert gas. Moisture uptake may lower the glass transition temperature of the dried matrix and accelerate chemical or physical degradation. Storage conditions therefore depend on the formulation, container, and intended shelf life. Some products remain stable at room temperature, while others require refrigeration or freezing.
Quality control for lyophilized products includes appearance, cake structure, reconstitution time, pH, residual moisture, and potency. Residual moisture is a key attribute because excess water can reduce stability, while excessively low moisture may cause structural changes or aggregation in some systems. Stability studies compare real-time and accelerated conditions to estimate shelf life. Analytical methods must be validated for the specific matrix, container, and moisture range. Sterility and container integrity are also monitored for sterile products.
The skin consists of a thin epidermis with mucous cells and sensory cells and a fibrous dermis made of collagen and containing various cells that allow colour change. Most of the body is made of soft tissue, allowing it to squeeze through tiny gaps; even the larger species can pass through a gap little more than 2.5 cm (1 in) in diameter. Lacking skeletal support, the arms work as muscular hydrostats and feature longitudinal, transverse, and circular muscles around a central axial nerve. They can squash and stretch, coil at any place in any direction or stiffen. The interior surfaces of the arms are covered with circular, adhesive suckers. The suckers allow the octopus to secure itself in place or to handle objects. Each sucker is typically circular and bowl-like and has two distinct parts: an outer disc-shaped infundibulum and an inner cup-like acetabulum, both of which are thick muscles covered in connective tissue. A chitinous cuticle lines the outer surface. When a sucker attaches to a surface, the orifice between the two structures is sealed and the infundibulum flattens. Muscle contractions allow for attachment and detachment. Each of the eight arms senses and responds to light, allowing the octopus to control its limbs even if its head is obscured.
==== Distribution ==== Following the administration of fospropofol 12.5 mg/kg (the maximum recommended dose) loss of consciousness takes about four minutes, compared to one arm-brain circulation time with propofol 2.5 mg/kg (the maximum recommended dose).
The production of sparkling cider requires a second round of fermentation, and a second yeast selection. The yeast used for the secondary fermentation in sparkling cider production serve the same purpose as the yeast used in the champagne method of sparkling wine production: to generate carbonation and distinct aromas with a fermentation that occurs in the bottle. The yeast is selected based on critical properties, such as tolerance to high pressure, low temperature, and high ethanol concentration, as well as an ability to flocculate, which allows for riddling to remove the yeast when the fermentation has finished. Some researchers have also suggested that non-Saccharomyces yeasts could be used to release additional flavour or mouthfeel compounds, as they may contain enzymes, such as β-glucosidase, β-xylosidase, or polygalacturonase, which Saccharomyces yeast may not produce. Not all yeast associated with cider production are necessary for fermentation; many are considered spoilage microbes and can be a significant source of off odors in the finished product. Brettanomyces species produce volatile phenols, especially 4-ethyl phenol, which impart a distinct aroma called "Bretty", typically described as "barnyard", "horsey", or "bandaid". While these aromas would be considered spoilage odors in wines, many cider producers and consumers do not consider them a fault.
A phase III clinical trial of bicalutamide in combination with an ethinylestradiol-containing combined oral contraceptive for the treatment of severe hirsutism in women with PCOS was completed in Italy in 2017 under supervision of the Italian Agency for Drugs (AIFA). Antiandrogens have been suggested for treating COVID-19 in men and as of May 2020 high-dose bicalutamide is in a phase II clinical trial for this purpose.
On 28 September 2025, Noboa led a humanitarian convoy with UN and EU diplomats Laura Melo, Yekaterina Doródnova and Giovanni Davoli. The convoy, which was escorted by armed military, came under attack as protestors used Molotov cocktails and rocks in Cotacachi, Imbabura Province. The attack took place during nationwide strikes and protests about fuel subsidy cuts after an unarmed protestor, Efrain Fuerez, was shot dead by a soldier. It resulted in the kidnapping of 17 soldiers who were released four days later. The protests were led by the indigenous rights group Confederation of Indigenous Nationalities of Ecuador (CONAIE), who have reported repression by freezing the bank accounts of indigenous leaders and activists as well as the censorship of indigenous-led radio and TV channels. In response, Noboa declared a state of emergency in eight provinces, enforcing a curfew. On 23 October 2025, Noboa said he was the target of an assassination attempt using poisoned chocolate and jam. On 16 November 2025 a majority of Ecuadorians voted against allowing the return of foreign military bases in the country and drafting a new constitution, alongside other proposals in a referendum proposed by Noboa, being described as his first major political setback during his second term.
Sources: en.wikipedia.org
== Function == Histatins are antimicrobial and antifungal proteins, and have been found to play a role in wound-closure. A significant source of histatins is found in the serous fluid secreted by Ebner's glands, salivary glands at the back of the tongue, and produced by acinus cells. Here they offer some early defense against incoming microbes. The three major histatins are 1, 3, and 5, which contains 38, 32, and 24 amino acids, respectively. Histatin 2 is a degradation product of histatin 1, and all other histatins are degradation products of Histatin 3 through the process of post-translational proteolysis of the HTN3 gene product. Therefore there are only two genes, HTN1 and HTN3. The N-terminus of histatin 5 allows it to bind with metals, and this can result in the production of reactive oxygen species. Histatins disrupt the fungal plasma membrane, resulting in release of the intracellular content of the fungal cell. They also inhibit the growth of yeast, by binding to the potassium transporter and facilitating in the loss of azole-resistant species. The antifungal properties of histatins have been seen with fungi such as Candida glabrata, Candida krusei, Saccharomyces cerevisiae, and Cryptococcus neoformans. Histatins also precipitate tannins from solution, thus preventing alimentary adsorption. Histatins are a family of small, histidine-rich, cationic peptides found in human saliva. They are part of the innate immune system and play critical roles in oral health, including antifungal activity, wound healing, and cell migration.
A polymer () is a substance or material that consists of very large molecules, or macromolecules, that are constituted by many repeating subunits derived from one or more species of monomers. Due to their broad spectrum of properties, both synthetic and natural polymers have essential and ubiquitous roles in everyday life. Polymers range from familiar synthetic plastics such as polystyrene to natural biopolymers such as DNA and proteins that are fundamental to biological structure and function. Polymers, both natural and synthetic, are created via polymerization of many small molecules, known as monomers. Their consequently large molecular mass, relative to small molecule compounds, produces unique physical properties including toughness, high elasticity, viscoelasticity, and a tendency to form amorphous and semicrystalline structures rather than crystals. Polymers are studied in the fields of polymer science (which includes polymer chemistry and polymer physics), biophysics and materials science and engineering. Historically, products arising from the linkage of repeating units by covalent chemical bonds have been the primary focus of polymer science. An emerging important area now focuses on supramolecular polymers formed by non-covalent links. Polyisoprene of latex rubber is an example of a natural polymer, and the polystyrene of styrofoam is an example of a synthetic polymer.
The refractive index of liquid water (1.333 at 20 °C (68 °F)) is much higher than that of air (1.0), similar to those of alkanes and ethanol, but lower than those of glycerol (1.473), benzene (1.501), carbon disulfide (1.627), and common types of glass (1.4 to 1.6). The refraction index of ice (1.31) is lower than that of liquid water.
=== EC 2.6.1: Transaminases === EC 2.6.1.1: aspartate transaminase EC 2.6.1.2: alanine transaminase EC 2.6.1.3: cysteine transaminase EC 2.6.1.4: glycine transaminase EC 2.6.1.5: tyrosine transaminase EC 2.6.1.6: leucine transaminase EC 2.6.1.7: kynurenine—oxoglutarate transaminase EC 2.6.1.8: deleted EC 2.6.1.9: histidinol-phosphate transaminase EC 2.6.1.10: deleted, included with EC 2.6.1.21, D-amino-acid transaminase EC 2.6.1.11: acetylornithine transaminase EC 2.6.1.12: alanine—oxo-acid transaminase EC 2.6.1.13: ornithine aminotransferase EC 2.6.1.14: asparagine—oxo-acid transaminase EC 2.6.1.15: glutamine—pyruvate transaminase EC 2.6.1.16: glutamine—fructose-6-phosphate transaminase (isomerizing) EC 2.6.1.17: succinyldiaminopimelate transaminase EC 2.6.1.18: β-alanine—pyruvate transaminase EC 2.6.1.19: 4-aminobutyrate transaminase EC 2.6.1.20: deleted EC 2.6.1.21: D-amino-acid transaminase EC 2.6.1.22: (S)-3-amino-2-methylpropionate transaminase EC 2.6.1.23: 4-hydroxyglutamate transaminase EC 2.6.1.24: diiodotyrosine transaminase EC 2.6.1.25: deleted, Now included with EC 2.6.1.24 diiodotyrosine transaminase EC 2.6.1.26: thyroid-hormone transaminase EC 2.6.1.27: tryptophan transaminase EC 2.6.1.28: tryptophan—phenylpyruvate transaminase EC 2.6.1.29: diamine transaminase EC 2.6.1.30: pyridoxamine—pyruvate transaminase EC 2.6.1.31: pyridoxamine—oxaloacetate transaminase EC 2.6.1.32: valine—3-methyl-2-oxovalerate transaminase EC 2.6.1.33: dTDP-4-amino-4,6-dideoxy-D-glucose transaminase EC 2.6.1.34: UDP-N-acetylbacillosamine transaminase EC 2.6.1.35: glycine—oxaloacetate transaminase EC 2.6.1.36: L-lysine 6-transaminase EC 2.6.1.37: (2-aminoethyl)phosphonate—pyruvate transaminase EC 2.6.1.38: histidine transaminase EC 2.6.1.39: 2-aminoadipate transaminase EC 2.6.1.40: (R)-3-amino-2-methylpropionate—pyruvate transaminase EC 2.6.1.41: D-methionine—pyruvate transaminase EC 2.6.1.42: branched-chain-amino-acid transaminase EC 2.6.1.43: aminolevulinate transaminase EC 2.6.1.44: alanine—glyoxylate transaminase EC 2.6.1.45: serine—glyoxylate transaminase EC 2.6.1.46: diaminobutyrate—pyruvate transaminase EC 2.6.1.47: alanine—oxomalonate transaminase EC 2.6.1.48: 5-aminovalerate transaminase EC 2.6.1.49: dihydroxyphenylalanine transaminase EC 2.6.1.50: glutamine—scyllo-inositol transaminase EC 2.6.1.51: serine—pyruvate transaminase EC 2.6.1.52: phosphoserine transaminase EC 2.6.1.53: Now EC 1.4.1.13, glutamate synthase (NADPH) EC 2.6.1.54: pyridoxamine-phosphate transaminase EC 2.6.1.55: taurine—2-oxoglutarate transaminase EC 2.6.1.56: 1D-1-guanidino-3-amino-1,3-dideoxy-scyllo-inositol transaminase EC 2.6.1.57: aromatic-amino-acid transaminase EC 2.6.1.58: phenylalanine(histidine) transaminase EC 2.6.1.59: dTDP-4-amino-4,6-dideoxygalactose transaminase EC 2.6.1.60: aromatic-amino-acid—glyoxylate transaminase EC 2.6.1.61: identical to EC 2.6.1.40, (R)-3-amino-2-methylpropionate—pyruvate transaminase EC 2.6.1.62: adenosylmethionine—8-amino-7-oxononanoate transaminase EC 2.6.1.63: kynurenine—glyoxylate transaminase EC 2.6.1.64: glutamine—phenylpyruvate transaminase EC 2.6.1.65: N6-acetyl-β-lysine transaminase EC 2.6.1.66: valine—pyruvate transaminase EC 2.6.1.67: 2-aminohexanoate transaminase EC 2.6.1.68: Now classified as EC 2.6.1.13, ornithine aminotransferase and EC 2.6.1.36, L-lysine 6-transaminase EC 2.6.1.69: identical to EC 2.6.1.11, ((acetylornithine transaminase))|identical to EC 2.6.1.11, acetylornithine transaminase EC 2.6.1.70: aspartate—phenylpyruvate transaminase EC 2.6.1.71: lysine—pyruvate 6-transaminase EC 2.6.1.72: D-4-hydroxyphenylglycine transaminase EC 2.6.1.73: methionine—glyoxylate transaminase EC 2.6.1.74: cephalosporin-C transaminase EC 2.6.1.75: cysteine-conjugate transaminase EC 2.6.1.76: diaminobutyrate—2-oxoglutarate transaminase EC 2.6.1.77: taurine—pyruvate aminotransferase EC 2.6.1.78: aspartate—prephenate aminotransferase EC 2.6.1.79: glutamate—prephenate aminotransferase EC 2.6.1.80: nicotianamine aminotransferase EC 2.6.1.81: succinylornithine transaminase EC 2.6.1.82: putrescine aminotransferase EC 2.6.1.83: LL-diaminopimelate aminotransferase EC 2.6.1.84: arginine—pyruvate transaminase EC 2.6.1.85: aminodeoxychorismate synthase EC 2.6.1.86: 2-amino-4-deoxychorismate synthase EC 2.6.1.87: UDP-4-amino-4-deoxy-L-arabinose aminotransferase EC 2.6.1.88: methionine transaminase EC 2.6.1.89: dTDP-3-amino-3,6-dideoxy-α-D-glucopyranose transaminase EC 2.6.1.90: dTDP-3-amino-3,6-dideoxy-α-D-galactopyranose transaminase EC 2.6.1.91: Identical to EC 2.6.1.34, UDP-N-acetylbacillosamine transaminase EC 2.6.1.92: UDP-4-amino-4,6-dideoxy-N-acetyl-β-L-altrosamine transaminase EC 2.6.1.93: neamine transaminase EC 2.6.1.94: 2′-deamino-2′-hydroxyneamine transaminase EC 2.6.1.95: neomycin C transaminase EC 2.6.1.96: 4-aminobutyrate—pyruvate transaminase EC 2.6.1.97: archaeosine synthase EC 2.6.1.98: UDP-2-acetamido-2-deoxy-ribo-hexuluronate aminotransferase EC 2.6.1.99: L-tryptophan—pyruvate aminotransferase EC 2.6.1.100: L-glutamine:2-deoxy-scyllo-inosose aminotransferase EC 2.6.1.101: L-glutamine:3-amino-2,3-dideoxy-scyllo-inosose aminotransferase EC 2.6.1.102: GDP-perosamine synthase EC 2.6.1.103: (S)-3,5-dihydroxyphenylglycine transaminase EC 2.6.1.104: 3-dehydro-glucose-6-phosphate—glutamate transaminase EC 2.6.1.105: lysine—8-amino-7-oxononanoate transaminase EC 2.6.1.106: dTDP-3-amino-3,4,6-trideoxy-α-D-glucose transaminase EC 2.6.1.107: β-methylphenylalanine transaminase EC 2.6.1.108: (5-formylfuran-3-yl)methyl phosphate transaminase EC 2.6.1.109: 8-amino-3,8-dideoxy-α-D-manno-octulosonate transaminase EC 2.6.1.110: dTDP-4-dehydro-2,3,6-trideoxy-D-glucose 4-aminotransferase EC 2.6.1.111: 3-aminobutanoyl-CoA transaminase EC 2.6.1.112: (S)-ureidoglycine—glyoxylate transaminase EC 2.6.1.113: putrescine—pyruvate transaminase EC 2.6.1.114: 8-demethyl-8-aminoriboflavin-5′-phosphate synthase EC 2.6.1.115: 5-hydroxydodecatetraenal 1-aminotransferase EC 2.6.1.116: 6-aminohexanoate aminotransferase EC 2.6.1.117: L-glutamine—4-(methylsulfanyl)-2-oxobutanoate aminotransferase EC 2.6.1.118: [amino-group carrier protein]-γ-(L-lysyl)-L-glutamate aminotransferase EC 2.6.1.119: vanillin aminotransferase
George Galloway (born 16 August 1954) is a British politician, broadcaster, and writer. He has been leader of the Workers Party of Britain since he founded it in 2019, and is a former leader of the Respect Party. Until 2003, he was a member of the Labour Party. From 1987 to 2010, from 2012 to 2015, and briefly in 2024, Galloway served as Member of Parliament (MP) for five different constituencies. As of 2026, he is living in "self-imposed exile" in Russia. Galloway was born in Dundee, Scotland. After becoming the youngest ever chair of the Scottish Labour Party in 1981, he was general secretary of the charity War on Want from 1983 until his election as MP for Glasgow Hillhead at the 1987 general election; he was re-elected three times. The Labour Party expelled him in 2003 due to comments he made in opposition to the invasion of Iraq. Galloway joined the Respect Party in 2004, and was its leader from 2013 to 2016. He was elected as MP for Bethnal Green and Bow at the 2005 general election. After losing in the neighbouring constituency of Poplar and Limehouse at the 2010 general election, he regained a parliamentary seat at the 2012 Bradford West by-election, only to lose it at the 2015 general election. He unsuccessfully stood as an independent candidate at the 2017 and 2019 general elections. Galloway then founded the Workers Party of Britain, and stood unsuccessfully for the party at the 2021 Batley and Spen by-election. Galloway won the 2024 Rochdale by-election. He lost the seat at the 2024 general election.
Sources: en.wikipedia.org
== Function == This gene is a member of the NAD(P)H dehydrogenase (quinone) family and encodes a cytoplasmic 2-electron reductase. This FAD-binding protein forms homodimers and reduces quinones to hydroquinones. This enzyme facilitates the two electron reduction of quinone to hydroquinone. NQO1-mediated two electron reduction of quinone to hydroquinone thereby indirectly prevents the one electron reduction of quinone to the semiquinone free radical. The ubiquitin-independent p53 degradation pathway is regulated by NQO1. NQO1 stabilizes p53, protecting it from degradation. Individuals with decreased NQO1 expression/activity have reduced p53 stability, which may lead to resistance to drugs such as chemotherapeutics.
=== Biological actions === β-TG is a chemoattractant, strongly for fibroblasts and weakly for neutrophils. It is a stimulator of mitogenesis, extracellular matrix synthesis, glucose metabolism, and plasminogen activator synthesis in human fibroblasts. β-TG also affects megakaryocyte maturation, and thus helps in regulating platelet production.
=== Incidents involving medical radiation sources === A radioactive contamination incident occurred in 1984 in Ciudad Juárez, Chihuahua, Mexico, originating from a radiation therapy unit illegally purchased by a private medical company and subsequently dismantled for lack of personnel to operate it. The radioactive material, 60Co, ended up in a junkyard, where it was sold to foundries that inadvertently smelted it with other metals and produced about 6,000 tons of contaminated rebar. These were distributed in 17 Mexican states and several cities in the United States. It is estimated that 4,000 people were exposed to radiation as a result of this incident. In the Samut Prakan radiation accident in 2000, a disused radiotherapy head containing a 60Co source was stored at an unsecured location in Bangkok, Thailand and then accidentally sold to scrap collectors. Unaware of the danger, a junkyard employee dismantled the head and extracted the source, which remained unprotected for a period of days at the junkyard. Ten people, including the scrap collectors and workers at the junkyard, were exposed to high levels of radiation and became ill. Three junkyard workers later died of their exposure, which was estimated to be over 6 Gy. Afterward, the source was safely recovered by Thai authorities. In December 2013, a truck carrying a disused 111 TBq 60Co teletherapy source from a hospital in Tijuana to a radioactive waste storage center was hijacked at a gas station near Mexico City. The truck was soon recovered, but the thieves had removed the source from its shielding.
== Life and work == Zuckerkandl was raised in Vienna, Austria in a household of intellectuals, but his family relocated in 1938 to Paris, and later Algiers, to escape the racial policy of Nazi Germany with respect to Jews. At the end of World War II, he spent one year at the University of Paris (Sorbonne), then came to the United States to study physiology—earning a master's degree in 1947 from the University of Illinois, under C. Ladd Prosser—then returned to the Sorbonne to complete a Ph.D. in biology. Zuckerkandl developed a strong interest in molecular problems; his early research at a marine biology lab in Roscoff emphasized the roles of copper oxidases and hemocyanin in the molting cycles of crabs. In 1957, Zuckerkandl met renowned chemist Linus Pauling, who was becoming interested in molecular diseases and molecular evolution as an outgrowth of his activism on topics concerning nuclear power. They arranged a post-doctoral fellowship, and Zuckerkandl (now with his wife Jane, daughter of geneticist Charles W. Metz) returned to the United States to work with Pauling at the California Institute of Technology beginning in 1959. He was an atheist.
Sources: en.wikipedia.org
Karl Fischer titration is a common method, using coulometric or volumetric detection. Thermogravimetric analysis can also measure weight loss on heating. Results depend on sample handling because the dried solid can absorb moisture quickly.
The porous cake readily absorbs water vapor from air, which can reduce stability or cause collapse. Vials are sealed with stoppers and crimp seals, sometimes under vacuum or inert gas. Packaging also protects against oxygen and mechanical damage.
Collapse occurs when the product temperature rises above its collapse threshold during primary drying. The ice matrix loses structure, and the cake may shrink or melt back. Formulation excipients and freezing rate influence collapse threshold.
Lyophilized products should be stored in airtight containers, protected from moisture and light, at the temperature specified by the manufacturer. Many require refrigeration at 2–8 °C, while some need frozen storage. Always check the product label for specific conditions.