Scandium is a chemical element; it has symbol Sc and atomic number 21. It is a silvery-white metallic d-block element. Historically, it has been classified as a rare-earth element, together with yttrium and the lanthanides. It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia.
William Prout FRS was an English chemist, physician, and natural theologian. He is remembered today mainly for what is called Prout's hypothesis.
James Bryant Conant was an American chemist, a transformative President of Harvard University, and the first U.S. Ambassador to West Germany. Conant obtained a Ph.D. in chemistry from Harvard in 1916.
The American Chemical Society (ACS) is a scientific society based in the United States that supports scientific inquiry in the field of chemistry. Founded in 1876 at New York University, the ACS currently has more than 155,000 members at all degree levels and in all fields of chemistry, chemical engineering, and related fields. It is one of the world's largest scientific societies by membership. The ACS is a 501(c)(3) non-profit organization and holds a congressional charter under Title 36 of the United States Code. Its headquarters are located in Washington, D.C., and it has a large concentration of staff in Columbus, Ohio.
The National Chemical Laboratory (NCL) is an Indian government laboratory based in Pune, in western India.
In organic chemistry, crown ethers are cyclic chemical compounds that consist of a ring containing several ether groups (R−O−R’). The most common crown ethers are cyclic oligomers of ethylene oxide, the repeating unit being ethyleneoxy, i.e., −CH2CH2O−. Important members of this series are the tetramer (n = 4), the pentamer (n = 5), and the hexamer (n = 6). The term "crown" refers to the resemblance between the structure of a crown ether bound to a cation, and a crown sitting on a person's head. The first number in a crown ether's name refers to the number of atoms in the cycle, and the second number refers to the number of those atoms that are oxygen. Crown ethers are much broader than the oligomers of ethylene oxide; an important group are derived from catechol.
Saxitoxin (STX) is a potent neurotoxin and the best-known Paralytic shellfish poisoning (PST). Ingestion of saxitoxin by humans, usually by consumption of shellfish contaminated by toxic algal blooms, is responsible for the illness known as paralytic shellfish poisoning (PSP).
Qinghai University is a provincial public university in Xining, Qinghai, China. It is affiliated with the Province of Qinghai, and co-sponsored by the Qinghai Provincial People's Government and the Ministry of Education of China. The university is part of Project 211 and the Double First-Class Construction.
In electrochemistry, a salt bridge or ion bridge is an essential laboratory device discovered over 100 years ago. It contains an electrolyte solution, typically an inert solution, used to connect the oxidation and reduction half-cells of a galvanic cell, a type of electrochemical cell. In short, it functions as a link connecting the anode and cathode half-cells within an electrochemical cell. It also maintains electrical neutrality within the internal circuit and stabilizes the junction potential between the solutions in the half-cells. Additionally, it serves to minimize cross-contamination between the two half cells and helps concentrate our focus on unfolding the function of working electrodes of the half-cells.
Chemistry education is the study of teaching and learning chemistry. It is one subset of STEM education or discipline-based education research (DBER). Topics in chemistry education include understanding how students learn chemistry and determining the most efficient methods to teach chemistry. There is a constant need to improve chemistry curricula and learning outcomes based on findings of chemistry education research (CER). Chemistry education can be improved by changing teaching methods and providing appropriate training to chemistry instructors, within many modes, including classroom lectures, demonstrations, and laboratory activities.
The Papyrus Graecus Holmiensis is a collection of craft recipes compiled in Egypt c. 300 AD. It is written in Greek. The Stockholm papyrus has 154 recipes for dyeing, coloring gemstones, cleaning (purifying) pearls, and imitation gold and silver. Certain of them may derive from the Pseudo-Democritus. Zosimos of Panopolis, an Egyptian alchemist of c. 300 AD, gives similar recipes. Some of these recipes are found in medieval Latin collections of technological recipes, notably the Mappae clavicula.
Passade is a municipality in the district of Plön, in Schleswig-Holstein, Germany. Passade was first mentioned in 1373. The picturesque location and the intact village structure was appreciated in 2003 with the first prize in the competition "Unser Dorf soll schöner werden". In 2004, the award was appropriated at federal level.
Gordon Research Conferences are a group of international scientific conferences organized by a non-profit organization of the same name, since 1931 covering frontier research in the chemical, and physical and later biological, sciences, and their related technologies. The conferences have been held in the US since 1931, and have expanded to almost 400 conferences per year since 1990, including Europe and Asia. Conference locations are chosen partly for their scenic and often isolated nature, to encourage an informal community atmosphere. Contributions are off the record, with references to the conference in any publication strictly prohibited to encourage free discussion, often of unpublished research. In 1991, conferences were extended to cover science education.
Hitit University is a university in Çorum, Turkey, founded in 2006. The university was affiliated to Gazi University before splitting into an independent university, with existing educational units affiliated to this newly founded university in 2006.
John Michael Prausnitz is an emeritus professor of chemical engineering at the University of California, Berkeley.
THJ-2201 is an indazole-based synthetic cannabinoid that presumably acts as a potent agonist of the CB1 receptor and has been sold online as a designer drug.
THJ-018 (SGT-17) is a synthetic cannabinoid that is the indazole analogue of JWH-018 and has been sold online as a designer drug.
The Columbia Journal of Environmental Law is a student-run law review published at Columbia University's School of Law. The journal primarily publishes articles, notes, and book reviews discussing environmental law and policy and related subjects.
Cingestol, also known as 17α-ethynylestr-5-en-17β-ol, is a steroidal progestin of the 19-nortestosterone group that was never marketed. It was synthesized in 1969 and was developed in the 1970s by Organon as a low-dose, progestogen-only contraceptive, but in 1984, was still described as "under investigation". The drug is an isomer of lynestrenol with the double bond between C5 and C6.
Neil Elbridge Gordon was an American chemist and educator. He founded the Journal of Chemical Education and established the Gordon Research Conferences.
