Search references for CHEM. Phrases containing CHEM
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Topics referred to by the same term
Chem may refer to: Chemistry Chemical Chem (journal), a scientific journal published by Cell Press Post apocalyptic slang for "drugs", medicinal or otherwise
Chem
2024 single by Sabrina Carpenter
"Bed Chem" is a song by American singer Sabrina Carpenter from her sixth studio album, Short n' Sweet (2024). Written by Carpenter, Julia Michaels, Amy
Bed_Chem
South Korean chemical company
LG Chem Ltd. (Korean: LG화학), often referred to as LG Chemical, is the largest Korean chemical company and is headquartered in Seoul, South Korea. It was
LG_Chem
Software for drawing chemical structures
ChemDraw™ is a molecule editor and communication suite, for the management, reporting, and presentation of chemistry research and discoveries. ChemDraw
ChemDraw
Computational chemistry software package
Q-Chem is a general-purpose electronic structure package featuring a variety of established and new methods implemented using algorithms that enable fast
Q-Chem
Chemical information database
PubChem is a database of chemical molecules and their activities against biological assays. The system is maintained by the National Center for Biotechnology
PubChem
Academic journal
ChemPlusChem is a monthly peer-reviewed scientific journal covering chemistry and published by Wiley-VCH on behalf of Chemistry Europe. It was established
ChemPlusChem
Academic journal
ChemCatChem is a biweekly peer-reviewed scientific journal covering heterogeneous, homogeneous, and biocatalysis. It is published by Wiley-VCH on behalf
ChemCatChem
Academic journal
ChemPhysChem is a biweekly peer-reviewed scientific journal published by Wiley-VCH on behalf of Chemistry Europe. It was established in 2000 and covers
ChemPhysChem
Academic journal
ChemSusChem is a biweekly peer-reviewed scientific journal established in 2008 and published by Wiley-VCH on behalf of Chemistry Europe. The editor-in-chief
ChemSusChem
Database of chemicals owned by the Royal Society of Chemistry
ChemSpider is a freely accessible online database of chemicals owned by the Royal Society of Chemistry. It contains information on more than 100 million
ChemSpider
Welsh footballer (born 2002)
Chem Campbell (born 30 December 2002) is a Welsh footballer who plays as a winger for EFL League One club Stevenage. He is a former youth international
Chem_Campbell
American agricultural equipment manufacturer
Ag-Chem Equipment Company was a manufacturer of nutrient and pesticide application equipment that was founded in Jackson, Minnesota USA. It was sold to
Ag-Chem_Equipment
13th-century battle involving the Mongol Empire
The Chem River Battle, also known as the Battle on the Djem or Chem River campaign, was an early 13th century battle between the Mongol Empire and remnants
Chem_River_Battle
Academic journal
ChemBioChem is a peer-reviewed scientific journal covering chemical biology, synthetic biology, and bio-nanotechnology and published by Wiley-VCH on behalf
ChemBioChem
Pharmacy chain in South Africa
Dis-Chem Pharmacies Limited, commonly known as Dis-Chem, is the second-largest retail pharmacy chain in South Africa, operating over 300 stores across
Dis-Chem
Chinese biotechnology company
Global Bio-Chem Technology Group (Chinese: 大成生化集團控股), also known as simply Global Bio-Chem, is a Chinese biotechnology company based in Hong Kong. The
Global_Bio-Chem
Chinese state-owned chemical company
China National Chemical Corporation, commonly known as ChemChina, is a Chinese state-owned chemical company in the product segments of agrochemicals, rubber
ChemChina
Fertilizer company headquartered in Switzerland
EuroChem Group AG is a fertilizer producer headquartered in Zug, Switzerland, where it moved from Russia in 2015. It is a fertilizer manufacturer with
EuroChem
US chemical and medical device manufacturer
Chemence is a speciality chemical and medical device manufacturer which products include cyanoacrylate adhesives, anaerobic adhesives, impregnation sealants
Chemence
Academic journal
Chem is a peer-reviewed scientific journal by Cell Press. It is a sister journal to Cell. It was established in 2016, and is currently edited by Robert
Chem_(journal)
American chemical corporation
OxyChem is a chemical manufacturer that was a wholly-owned subsidiary of Oxy (Occidental Petroleum Corporation) until the latter decided to begin negotiating
OxyChem
Town in Kinta District, Perak, Malaysia
Chemor (Jawi: چيمور) is a main town in Kinta District, Perak, Malaysia. Chemor is located in the Kinta River Valley. The region surrounding Chemor consists
Chemor
Television station in Trois-Rivières
CHEM-DT (channel 8) is a television station in Trois-Rivières, Quebec, Canada, owned and operated by the French-language network TVA. The station's studios
CHEM-DT
Preprint server
ChemRxiv (pronounced "chem archive"—the X represents the Greek letter chi [χ]) is an open access preprint archive for chemistry. It is operated by the
ChemRxiv
Academic journal
ChemElectroChem is a biweekly peer-reviewed scientific journal covering pure and applied electrochemistry. It is published by Wiley-VCH on behalf of Chemistry
ChemElectroChem
Academic journal
ChemComm (or Chemical Communications), formerly known as Journal of the Chemical Society D: Chemical Communications (1969–1971), Journal of the Chemical
ChemComm
Cambodian ambassador
Chem Widhya (born 6 December 1958 in Phnom-Penh, Cambodia) has been the ambassador of the Kingdom of Cambodia (rank of a minister since September 2009)
Chem_Widhya
American cleaning franchise chain
Chem-Dry (the name stands for CHEMISTRY-DRY) is an American carpet cleaning and upholstery cleaning franchise chain with main offices in Logan, Utah, and
Chem-Dry
Subdiscipline of chemistry, focusing on carbon compounds
November 2014. Kiefer, D. M. (1993). "Organic Chemicals' Mauve Beginning". Chem. Eng. News. 71 (32): 22–23. doi:10.1021/cen-v071n032.p022. "August Kekulé
Organic_chemistry
Academic journal
in the field of heterocycle chemistry. It is a source for the ChemSpider database. "ChemSpider | Data Sources". www.chemspider.com. Retrieved 2024-07-17
Journal of Heterocyclic Chemistry
Journal_of_Heterocyclic_Chemistry
Technique for mapping interactions between molecules and their protein targets
Chem-seq is a technique that is used to map genome-wide interactions between small molecules and their protein targets in the chromatin of eukaryotic cell
Chem-seq
Chemism refers to forces of attraction or adhesion between entities. It has uses in chemistry and philosophy. In the past, chemism referred to intramolecular
Chemism
Weekly peer-reviewed journal
ISO 4 (alt) · Bluebook (alt) NLM (alt) · MathSciNet (alt ) ISO 4 J. Am. Chem. Soc. Indexing CODEN (alt · alt2) · JSTOR (alt) · LCCN (alt) MIAR · NLM (alt) ·
Journal of the American Chemical Society
Journal_of_the_American_Chemical_Society
Academic journal
ChemPhotoChem is a monthly peer-reviewed scientific journal that covers pure and applied photochemistry. It is published by Wiley-VCH on behalf of Chemistry
ChemPhotoChem
Hungarian chemical raw material manufacturing company
Wanhua-BorsodChem is a Hungarian chemical raw material manufacturing company headquartered in Kazincbarcika, Hungary. It is the European member of the
BorsodChem
Computational chemistry software program
TeraChem is a computational chemistry software program designed for CUDA-enabled Nvidia GPUs. The initial development started at the University of Illinois
TeraChem
American scientific society
for undergraduate students, and ChemMatters, a magazine for high school students and teachers. ACS also created ChemRxiv, which is an open access preprint
American_Chemical_Society
Agilent ChemStation is a software package to control Agilent liquid chromatography, gas chromatography, and ultraviolet-visible spectroscopy systems such
Agilent_ChemStation
American scientific consulting firm
ChemRisk was a Delaware Limited Liability Company, a for-profit scientific consulting firm headquartered in San Francisco, California, that was part of
ChemRisk
Chemical technologists and technicians (abbr. chem techs) are workers who provide technical support or services in chemical-related fields. They may work
Chemical_technologist
Group of chemical compounds
PubChem Ciguatoxin 2 - CID 6441260 from PubChem Ciguatoxin 3 - CID 6444399 from PubChem Ciguatoxin 4B (Gambiertoxin 4b) - CID 6450530 from PubChem Ciguatoxins
Ciguatoxin
U.S. lawn treatment company
TruGreen, originally known as ChemLawn and later as TruGreen ChemLawn, is the largest lawn care company in the United States. The company was founded
TruGreen
The Chem-E-Car Competition is an annual college engineering competition, mainly geared towards students studying Chemical Engineering or similar disciplines
Chem-E-Car
Chemistry indexing and abstracting service
ChemInform was an indexing and abstracting service and database in chemistry. The service published abstracts related to organic, organometallic, inorganic
ChemInform
1966 American musical stage play
‹ The template Infobox musical is being considered for merging. › Chu Chem is a musical with a book by Ted Allen, lyrics by Jim Haines and Jack Wohl, and
Chu_Chem
American consumer goods company
ChemPro, Inc. was a consumers goods company based in Spartanburg, South Carolina. The corporation made branded and private label heavy-duty household cleaning
ChemPro
Type of military personal protective equipment
An NBC (nuclear, biological, chemical) suit, also known as a chem suit, or chemical suit is a type of military personal protective equipment. NBC suits
NBC_suit
Swedish nonprofit environmental organization
The International Chemical Secretariat (ChemSec) is a non-profit environmental organisation founded in Sweden in 2002 to advocate in favour of stricter
ChemSec
Selo in Altai Republic, Russia
Chemal (Russian: Чемал, Chemal; Altay: Чамал, Çamal) is a rural locality (a selo) and the administrative center of Chemalsky District of the Altai Republic
Chemal
Mayan Ceremonial Cave in Belize
Che Chem Ha Cave or Chechem Ha Cave is a Mayan ceremonial nave, now a tourist destination. It is located 8 miles (13 km) southeast of Benque at the start
Che_Chem_Ha_Cave
Cambodian politician
Chem Snguon (1926-1999) was a Cambodian politician and member of the cabinet. He was born in 1926 in Phnom Penh. He worked in the administration of Norodom
Chem_Snguon
Blood test
professionals in the United States as the "CHEM-7", or "SMA-7" (Sequential Multiple Analysis-7). The seven parts of a CHEM-7 are tests for: Four electrolytes:
Basic_metabolic_panel
South Korean multinational conglomerate
including LG Electronics, Zenith, LG Display, LG Uplus, LG Innotek, LG Chem, LG Energy Solution, and LG AI Research. LG Corporation was established as
LG
Academic journal
Chemische Berichte (usually abbreviated as Ber. or Chem. Ber.) was a German-language scientific journal of all disciplines of chemistry founded in 1868
Chemische_Berichte
Drug use to facilitate sexual activity
in Europe. In certain Southeast Asian countries, it is commonly known as "chem fun" (CF or Cf). Methamphetamine is often used recreationally for its effects
Party_and_play
Division of the American Chemical Society
their Common Chemistry project. Beilstein database Chemical database ChemInform ChemSpider SPRESI database FIZ Karlsruhe Google Scholar Inorganic Crystal
Chemical_Abstracts_Service
Physics applied to chemical systems
Physical Organic Chemistry (1988) Journal of Physical Chemistry B (1997) ChemPhysChem (2000) Journal of Physical Chemistry C (2007) Journal of Physical Chemistry
Physical_chemistry
Software for chemical structure drawing
XDrawChem is a free software program for drawing chemical structural formulas, available for Unix and macOS. It is distributed under the GNU GPL. In Microsoft
XDrawChem
Mexican lawyer and politician (born 1951)
Emilio Chuayffet Chemor (born 3 October 1951) is a Mexican lawyer and politician affiliated with the Institutional Revolutionary Party (PRI) since 1969
Emilio_Chuayffet
Academic journal
Watch) @JacobsenLab (8 June 2020). "Eric and other members of the @angew_chem International Advisory Board have resigned their positions on the Board"
Angewandte_Chemie
Maritime drone strike
On 23 December 2023, the tanker Chem Pluto was struck by an anti-ship missile or drone while it was carrying oil from Jubail, Saudi Arabia, to New Mangalore
2023_attack_on_the_Chem_Pluto
Superfund site in Michigan, US
Thermo-Chem, Inc., also referred to as Thermo-Chem, is a 50-acre Superfund site located in Egelston Township near Muskegon, Michigan. This site was used
Thermo-Chem,_Inc.
2011 video game
SpaceChem is a puzzle and indie game by Zachtronics Industries, based on principles of automation and chemical bonding. In the game, the player is tasked
SpaceChem
French actor (born 1986)
Chems Dahmani (born 16 June 1986) is a French actor. 2011: The Assault 2010: From Paris with Love (film) 2008: Des Poupées et Des Anges Directed by Nora
Chems_Dahmani
Markup language and file format
Chemical Markup Language (ChemML or CML) is an approach to managing molecular information using tools such as XML and Java. It was the first domain specific
Chemical_Markup_Language
Self-contained, short-term light source
A glow stick, also known as a light stick, chem light, light wand, light rod, and rave light, is a self-contained, short-term light source. It consists
Glow_stick
Advanced Placement course and exam
Advanced Placement (AP) Chemistry (also known as AP Chem) is a course and examination offered by the College Board as a part of the Advanced Placement
AP_Chemistry
Blood test assessing vital organ health
mellitus or hypertension. Previous names for the panel of tests have been Chem 12, Chemistry panel, Chemistry screen, SMA 12, SMA 20 and SMAC (Sequential
Comprehensive_metabolic_panel
Organization
The European Chemical Society (EuChemS) is a European non-profit organisation which promotes collaboration between non-profit scientific and technical
European_Chemical_Society
Academic journal
current editor-in-chief is Scott J. Miller from Yale University. J. Org. Chem. is currently indexed in: Chemical Abstracts Service (CAS) SCOPUS EBSCOhost
The Journal of Organic Chemistry
The_Journal_of_Organic_Chemistry
Chemical structure drawing and publishing program
ChemWindow is a molecule editor and publishing program now published by John Wiley & Sons as of 2020, and originally developed by Bio-Rad Laboratories
ChemWindow
Thai actor and model
(Thai: เจมส์ อัศรัสกร, RTGS: Chem Atsaratsakon; born July 3, 1993) known professionally as James Ma (Thai: เจมส์ มาร์, RTGS: Chem Ma), is a Thai actor. He
James_Ma
Academic journal
ChemMedChem is a biweekly peer-reviewed scientific journal covering medicinal chemistry. It is published by Wiley-VCH on behalf of Chemistry Europe. In
ChemMedChem
American organic chemist
Book series, The O-Chem (Re)-Activity Book, the Backside Attack smartphone app, QR Chem, RS Chemistry, Virtual Reality Chemistry, ChemMatch, Biology And
Neil_Garg
Canadian biotechnology company
ConjuChem Biotechnologies Inc. is a medical biotechnology company located in Montreal, Quebec, Canada which is credited with inventing the experimental
ConjuChem
Academic journal
(1972–1996) (formerly J. Chem. Soc. A) Journal of the Chemical Society, Faraday Transactions (1972–1989) (formerly J. Chem. Soc. B) Journal of the Chemical
Journal of the Chemical Society
Journal_of_the_Chemical_Society
Cambodian sprinter
Savin Chem (born 11 November 1943) is a Cambodian sprinter. He competed in the men's 400 metres at the 1972 Summer Olympics. Evans, Hilary; Gjerde, Arild;
Savin_Chem
German manufacturer
extrusion technology, and reaction process machinery. It was acquired by ChemChina in 2016. KraussMaffei was formed in 1931 from a merger of the two Munich
KraussMaffei
Lebanese ancient noble Christian clan
Al-Chemor (pronounced Ach-Chmorr, Shammar, Shamir or Shummar in Arabic الشمرّ) is an ancient noble Christian Arab clan from Lebanon. The family ruled two
Al-Chemor
Academic journal
years "Fresenius' Journal of Analytical Chemistry", in: Fresenius J Anal Chem (2001) 71:1041-1042 Journal's homepage "Journal Homepage". May 24, 2024.
Analytical and Bioanalytical Chemistry
Analytical_and_Bioanalytical_Chemistry
Chemical compound
AAA Chemistry, ZINC, AKos Consulting & Solutions, Boc Sciences, ChemFrog, and ChemMol The alkylation of 2-chloro-10-(3-chloropropyl)phenothiazine [2765-59-5]
Thiopropazate
Academic journal
50-member international editorial board. Medicinal Chemistry Research (Med Chem Res, MCR) publishes comments, review articles, brief reports, and full original
Medicinal_Chemistry_Research
Public digital library and database
ChemXSeer project (stylized as ChemXSeer, funded by the National Science Foundation, is a public integrated digital library, database, and search engine
ChemXSeer
American importing company
ChemNutra is an American importer of ingredients for food, animal feed and pharmaceuticals based in Summerlin, Nevada Self-described as "The China-Source
ChemNutra
Academic journal
MJL by Clarivate". mjl.clarivate.com. Retrieved 2025-07-21. JRank: Chemical Reviews. https://jrank.net/journals/chem-rev/metrics Official website v t e
Chemical_Reviews
American academic journal
Crystallographic Data Centre) Chemical Abstracts Service/SciFinder (ACS) ChemWeb (ChemIndustry.com) Chimica Database (Elsevier) Current Contents: Physical
The Journal of Physical Chemistry Letters
The_Journal_of_Physical_Chemistry_Letters
Modular approach to chemical synthesis
introduced in the late 1960s (ChemBioChem 2007, 8, 1504. (68) Clovis, J. S.; Eckell, A.; Huisgen, R.; Sustmann, R. Chem. Ber. 1967, 100, 60). Tetrazoles
Click_chemistry
Campaign for diversity in the chemical sciences
BlackInChem is an organization which aims to highlight and increase the visibility of black chemists. The organization was created as a response to Black
BlackinChem
Paul Pietzschke, or Paul Pietzschke NautiChem, is a German corporation that produces sealants, coatings and lubricants for shipbuilding. Its main office
Paul_Pietzschke
Franco-Algerian lawyer
Chems-eddine Mohamed Hafiz (born 28 June 1954 in Algiers) is a Franco-Algerian lawyer. Since 11 January 2020, he has served as rector of the Grand Mosque
Chems-Eddine_Hafiz
Model for predicting molecular geometry
Rev. Chem. Soc. 11 (4): 339. doi:10.1039/QR9571100339. Gillespie, R. J. (1970). "The electron-pair repulsion model for molecular geometry". J. Chem. Educ
VSEPR_theory
Via Chem Group, a.s. (VCG) is a Czech holding company owned by Euro Capital Alliance registered on the British Virgin Islands. In 2003 VCG acquired 8.8%
Via_Chem_Group
Chemical reaction for synthesizing C–N bonds
improvements in the hetero cross-coupling of aryl halides and tin amides", J. Am. Chem. Soc., 116 (13): 5969–5970, Bibcode:1994JAChS.116.5969P, doi:10.1021/ja00092a058
Buchwald–Hartwig_amination
Academic journal
and indexed in: Cambridge Structural Database Chemical Abstracts Service ChemInform Current Contents/Physical, Chemical & Earth Sciences Inspec Science
Zeitschrift für anorganische und allgemeine Chemie
Zeitschrift_für_anorganische_und_allgemeine_Chemie
Peer-reviewed scientific journal
references to articles in Acta Chemica Scandinavica the abbreviation Acta Chem. Scand. is used. During the turbulent years after World War II, it was difficult
Acta_Chemica_Scandinavica
GAMESS (US), Gaussian, MOLCAS, MOLPRO, MPQC, OpenMopac, PC GAMESS, ORCA and Q-Chem computational chemistry packages. Builds molecules by atom, ring, group,
Gabedit
Academic journal
was the last to be published since the Polish Chemical Society joined the ChemPubSoc Europe consortium to become one of the founders of the European Journal
Polish_Journal_of_Chemistry
Academic journal
abbreviations ISO 4 (alt) · Bluebook (alt) NLM (alt) · MathSciNet (alt ) ISO 4 J. Chem. Educ. Indexing CODEN (alt · alt2) · JSTOR (alt) · LCCN (alt) MIAR · NLM
Journal_of_Chemical_Education
British artist and model
energy on creating art and fashion. The series of collages titled Us and Chem openly explores issues relating to mental health. The series addresses the
Blondey_McCoy
CHEM
CHEM
Male
Egyptian
, the son of an early Egyptian king.
Girl/Female
Biblical
Handling, stroking, taking away.
Boy/Male
Indian, Kannada, Tamil
Precious Words
Girl/Female
Biblical
Black ones.
Male
Egyptian
, Khufu.
Boy/Male
Hindu, Indian, Tamil
Lord Shiva
Boy/Male
Indian, Kannada, Tamil
Precious Gem
Biblical
handling; stroking; taking away
Female
Egyptian
, a form of Chemosh.
Boy/Male
Tamil
Premier, Best
Surname or Lastname
English
English : variant of Perrier 1 and 2.American bearers of the surname include Bennet Puryear (1826–1914), born in Mecklenburg Co., VA, youngest son of Thomas and Elizabeth (Marshall) Puryear, who studied medicine and chemistry before the Civil War, after which he became a professor of chemistry; he did pioneering work in the application of chemistry to agriculture. He had 11 children by his two wives.
Girl/Female
Indian, Tamil
Flawless Gem
Boy/Male
Hindu, Indian, Tamil
Richer
Biblical
black ones
Male
Egyptian
, the king of Chemmis.
Surname or Lastname
English
English : habitational name from a place called Kempsey in Worcestershire, recorded in Domesday Book as Chemesege, from an Old English personal name Cymi + ēg ‘island’, ‘area of dry land in a marsh’.
Girl/Female
Assamese, Bengali, Indian, Tamil
Flawless
Girl/Female
Hindu, Indian
Name of Wooden Part
Boy/Male
Assamese, Bengali, Hindu, Indian, Kannada, Marathi, Sindhi, Tamil, Telugu
Premier; Best
CHEM
CHEM
Boy/Male
Hindu, Indian
Falling
Girl/Female
Arabic, Muslim
Beautiful
Female
Finnish
Finnish form of Icelandic IngifrÃður, INKERI means "Ing-beautiful."
Boy/Male
Indian, Sanskrit
A Warrior of God
Girl/Female
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sindhi, Telugu
Surrender
Girl/Female
Hebrew American
Bee. Deborah was the Biblical prophetess who summoned Barak to battle against an army of...
Male
French
French and Romanian form of Latin Constantinus, CONSTANTIN means "steadfast."Â
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Mythological, Oriya, Punjabi, Sikh, Tamil, Traditional
Krishna's Brother
Girl/Female
Australian, French, Latin
Strong
Boy/Male
Hindu, Indian
River; Goddess Saraswati
CHEM
CHEM
CHEM
CHEM
CHEM
n.
A garment for women, consisting of chemise and drawers united in one.
n.
The application of chemical tests to minute objects or portions of matter, magnified by the use of the microscopy; -- distinguished from macro-chemistry.
n.
That branch of science which treats of the composition of substances, and of the changes which they undergo in consequence of alterations in the constitution of the molecules, which depend upon variations of the number, kind, or mode of arrangement, of the constituent atoms. These atoms are not assumed to be indivisible, but merely the finest grade of subdivision hitherto attained. Chemistry deals with the changes in the composition and constitution of molecules. See Atom, Molecule.
n.
Chemical action taking place through an intervening membrane.
n.
The force exerted between the atoms of elementary substance whereby they unite to form chemical compounds; chemical attaction; affinity; -- sometimes used as a general expression for chemical activity or relationship.
a.
Of or pertaining to micro-chemistry; as, a micro-chemical test.
a.
Of or pertaining to electro-chemistry.
n.
That branch of science which treats of the relation of electricity to chemical changes.
adv.
According to chemical principles; by chemical process or operation.
a.
Pertaining to, connected with, or dependent upon, both mechanics and chemistry; -- said especially of those sciences which treat of such phenomena as seem to depend on the laws both of mechanics and chemistry, as electricity and magnetism.
a.
Pertaining to, or produced by, chemosmosis.
a.
Pertaining to, or illustrating, the hypothetical space relations of atoms in the molecule; as, a stereo-chemic formula.
n.
A treatise on chemistry.
n.
An application of chemical theory and method to the consideration of some particular subject; as, the chemistry of iron; the chemistry of indigo.
a.
Alt. of Stereo-chemical
n.
A term sometimes applied to the decomposition of organic substance into more simple bodies, by the use of chemical agents alone.
n.
A person versed in chemistry or given to chemical investigation; an analyst; a maker or seller of chemicals or drugs.
n.
The science which treats of the chemical properties, actions or relations of substances in quantity; -- distinguished from micro-chemistry.
n.
Chemistry considered with reference to the space relations of atoms.