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Harriette Chick
Dame Harriette Chick DBE (6 January 1875 – 9 July 1977) was a British microbiologist, protein scientist, and nutritionist. She is best remembered for demonstrating the roles of sunlight and cod liver oil in preventing rickets. She also greatly contributed to the medical and public community as she discovered the origins of a number of diseases, including rickets and pellagra, and was a co-discoverer of the standarChick-Martin testfor disinfectants">">[1/nowiki> Biography Early life and education She was born in London, England, on January 6, 1875 as the fifth child of six daughters and four sons of Samuel Chick and Emma Hooley, a Methodist family. Her father owned property and sold lace. The Chick children were brought up strictly with no frivolities and regular attendance at family prayers. All seven girls attended Notting Hill High School, a girls' school thought to be outstanding for its teaching in the sciences.While there, the principle encouraged the inclusion of scien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University College London
University College London (Trade name, branded as UCL) is a Public university, public research university in London, England. It is a Member institutions of the University of London, member institution of the Federal university, federal University of London, and is the second-largest list of universities in the United Kingdom by enrolment, university in the United Kingdom by total enrolment and the largest by postgraduate enrolment. Established in 1826 as London University (though without university degree-awarding powers) by founders who were inspired by the radical ideas of Jeremy Bentham, UCL was the first university institution to be established in London, and the first in England to be entirely secular and to admit students regardless of their religion. It was also, in 1878, among the first university colleges to admit women alongside men, two years after University College, Bristol, had done so. Intended by its founders to be Third-oldest university in England debate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Commission On Sewage Disposal
{{Use dmy dates, date=April 2022 The Royal Commission on Sewage Disposal was established by the British government in 1898 to report on: (1) What method or methods of treating and disposing of sewage (including any liquid from any factory, or manufacturing process) may properly be adopted, consistently with due regard for the requirements of the existing law, for the protection of the public health, and for the economical and efficient discharge of the duties of local, authorities; and (2) If more than one method may be so adopted, by what rules, in relation to the nature or volume of sewage, or the population to be served, or other varying circumstances or requirements, should the particular method of treatment and disposal to be adopted be determined The commission convened and re-convened eight times under three different reigns, Victoria, Edward VII and King George V, and remained active until 1912 and in that period published nine reports. *The first report (Cd. 685), publis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biochemical Society
The Biochemical Society is a learned society in the United Kingdom in the field of biochemistry, including all the cellular and molecular biosciences. It was founded in 1911 and acquired the existing '' Biochemical Journal'' the following year. The society additionally publishes the journals '' Clinical Science'' and '' Biochemical Society Transactions'' via its publishing arm, Portland Press. It awards the Colworth Medal and formerly awarded the CIBA Medal (Novartis Medal). As of 2024, the president is Julia Goodfellow. Structure As of December 2023, the society had over 4,500 members, mainly in the UK. It is affiliated with the European body, Federation of European Biochemical Societies (FEBS). The president has been Julia Goodfellow since 2022. The Society's headquarters are in London. History The society was founded in 1911, under the name of the Biochemical Club.Lemmon, Mark A. (2022). Prosperous Future. '' Journal of Biochemistry'' 172 (3): 129–130 R. H. A. Plimmer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marian Busk
Lady Marian (née Balfour) Busk (1861 – 31 March 1941) was a British botanist and translator. She was known for her translation of ''Das Pflanzenleben der Donauländer'' by Anton Kerner von Marilaun. Busk was the daughter of silk merchant Lewis Balfour. After private study in botany and chemistry she earned in 1883 one of the first bachelor's degrees given to women by Queen's College, London. See in particular pp. 271–272. In 1905 she became one of the earliest female fellows of the Linnean Society of London, which began admitting female fellows in 1904. Beyond botany, her interests also included women's suffrage Women's suffrage is the women's rights, right of women to Suffrage, vote in elections. Several instances occurred in recent centuries where women were selectively given, then stripped of, the right to vote. In Sweden, conditional women's suffra .... She married legal scholar Edward Henry Busk in 1880; he was knighted in 1901. Works * References {{DEFAULTSO ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phenol Coefficient
The Phenol coefficient, is now largely of historical interest, although the principles upon which it is based are still used. It is a measure of the bactericidal activity of a chemical compound in relation to phenol. When listed numerically, the figure expressing the disinfecting power of a substance by relating it to the disinfecting power of phenol may be a function of the standardized test A standardized test is a Test (assessment), test that is administered and scored in a consistent or standard manner. Standardized tests are designed in such a way that the questions and interpretations are consistent and are administered and scored ... performed. For example, the Rideal–Walker method, introduced in 1903 gives a Rideal–Walker coefficient and the U.S. Department of Agriculture method gives a U.S. Department of Agriculture coefficient. To calculate phenol coefficient, the concentration of phenol at which the compound kills the test organism in 10 minutes, but not in 5 min ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CT Value
CT Values are an important part of calculating disinfectant dosage for the chlorination of drinking water. A CT value is the product of the concentration of a disinfectant (e.g. free chlorine) and the contact time with the water being disinfected. It is typically expressed in units of mg-min/L. The goal of disinfection is the inactivation of microorganisms. This depends on: the microorganism, the disinfectant being used, the concentration of the disinfectant, the contact time, and the temperature and pH of the water. Kinetics The disinfection kinetics are conventionally calculated via the Chick-Watson model, named for the work of Harriette Chick and H. E. Watson. This model is expressed by the following equation: : \ln(\frac)=-\Lambda_ C^n t \! Where: * (\frac) \! is the survival ratio for the microorganisms being killed * \Lambda_ \! is the Chick-Watson coefficient of specific lethality * C \! is the concentration of the disinfectant (typically in mg/L) * n \! is the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protein Folding
Protein folding is the physical process by which a protein, after Protein biosynthesis, synthesis by a ribosome as a linear chain of Amino acid, amino acids, changes from an unstable random coil into a more ordered protein tertiary structure, three-dimensional structure. This structure permits the protein to become biologically functional or active. The folding of many proteins begins even during the translation of the polypeptide chain. The amino acids interact with each other to produce a well-defined three-dimensional structure, known as the protein's native state. This structure is determined by the amino-acid sequence or primary structure. The correct three-dimensional structure is essential to function, although some parts of functional proteins Intrinsically unstructured proteins, may remain unfolded, indicating that protein dynamics are important. Failure to fold into a native structure generally produces inactive proteins, but in some instances, misfolded proteins have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flocculation
In colloidal chemistry, flocculation is a process by which colloidal particles come out of Suspension (chemistry), suspension to sediment in the form of floc or flake, either spontaneously or due to the addition of a clarifying agent. The action differs from Precipitation (chemistry), precipitation in that, prior to flocculation, colloids are merely suspended, under the form of a stable dispersion (where the internal phase (solid) is dispersed throughout the external phase (fluid) through mechanical agitation) and are not truly dissolved in Solution (chemistry), solution. Coagulation (water treatment), Coagulation and flocculation are important processes in fermentation and water treatment with coagulation aimed to destabilize and aggregate particles through chemical interactions between the coagulant and colloids, and flocculation to sediment the destabilized particles by causing their aggregation into floc. Term definition According to the IUPAC definition, flocculation is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coagulation
Coagulation, also known as clotting, is the process by which blood changes from a liquid to a gel, forming a thrombus, blood clot. It results in hemostasis, the cessation of blood loss from a damaged vessel, followed by repair. The process of coagulation involves Platelet-activating factor, activation, Cell adhesion, adhesion and aggregation of platelets, as well as deposition and maturation of fibrin. Coagulation begins almost instantly after an injury to the endothelium that lines a blood vessel. Exposure of blood to the subendothelial space initiates two processes: changes in platelets, and the exposure of subendothelial Tissue factor, platelet tissue factor to coagulation factor VII, which ultimately leads to cross-linked fibrin formation. Platelets immediately form a plug at the site of injury; this is called ''primary hemostasis. Secondary hemostasis'' occurs simultaneously: additional coagulation factors beyond factor VII (#Coagulation factors, listed below) respond in a c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protein Denaturation
In biochemistry, denaturation is a process in which proteins or nucleic acids lose folded structure present in their native state due to various factors, including application of some external stress or compound, such as a strong acid or base, a concentrated inorganic salt, an organic solvent (e.g., alcohol or chloroform), agitation, radiation, or heat. If proteins in a living cell are denatured, this results in disruption of cell activity and possibly cell death. Protein denaturation is also a consequence of cell death. Denatured proteins can exhibit a wide range of characteristics, from conformational change and loss of solubility or dissociation of cofactors to aggregation due to the exposure of hydrophobic groups. The loss of solubility as a result of denaturation is called ''coagulation''. Denatured proteins, e.g., metalloenzymes, lose their 3D structure or metal cofactor, and therefore, cannot function. Proper protein folding is key to whether a globular or membran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles James Martin (scientist)
Sir Charles James Martin was a British scientist and director of the Lister Institute of Preventive Medicine, who did seminal work on a wide range of topics including snake toxins, control of body temperature, Plague (disease), plague and the way it was spread, dysentery, typhoid and paratyphoid. Early life Born in Wilmot House, Dalston, he was the twelfth child of Josiah (an insurance company actuary) and Elizabeth Mary Martin (née Lewis), Charles James was part of an extended family of children from his parents' previous marriages. Being a delicate child, he was sent off to a private boarding school in Hastings. At 15 he was employed as a junior clerk at the insurance firm where his father worked. He studied mathematics as a requirement for a future as actuary, but showed no special aptitude. Browsing through the numerous bookshops in the area, he came across a secondhand copy of ''"A Hundred Experiments in Chemistry for One Shilling."'' Carrying out these experiments, he w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
