(n.) A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half times lighter than air (hence its use in filling balloons), and over eleven thousand times lighter than water. It is very abundant, being an ingredient of water and of many other substances, especially those of animal or vegetable origin. It may by produced in many ways, but is chiefly obtained by the action of acids (as sulphuric) on metals, as zinc, iron, etc. It is very inflammable, and is an ingredient of coal gas and water gas. It is standard of chemical equivalents or combining weights, and also of valence, being the typical monad. Symbol H. Atomic weight 1.
Example Sentences:
(1) The hypothesis that proteins are critical targets in free radical mediated cytolysis was tested using U937 mononuclear phagocytes as targets and iron together with hydrogen peroxide to generate radicals.
(2) It has been conformed that catalase from bovine liver eliminates only the pro R hydrogen atom from ethanol.
(3) We investigated the possible contribution made by oropharyngeal microfloral fermentation of ingested carbohydrate to the generation of the early, transient exhaled breath hydrogen rise seen after carbohydrate ingestion.
(4) Hydrogen isotope effects on these mutants indicate that MotA catalyzes proton transfer.
(5) Excessive accumulation of hydrogen ions in the brain may play a pivotal role in initiating the necrosis seen in infarction and following hyperglycemic augmentation of ischemic brain damage.
(6) Studies were conducted in isolated, buffer-perfused rat lungs to determine if prostaglandin (PG) E1 attenuated pulmonary edema provoked by hydrogen peroxide (H2O2).
(7) All N and O atoms except N(3) and O(4') participate in a three-dimensional hydrogen-bonding system.
(8) Both adiphenine.HCl and proadifen.HCl form more stable complexes, suggesting that hydrogen bonding to the carbonyl oxygen by the hydroxyl-group on the rim of the CD ring could be an important contributor to the complexation.
(9) Control mutant S38N has stability essentially the same as that of wild-type lysozyme but hydrogen bonding similar to that of the stabilizing mutant S38D.
(10) High intensity ultrasound also enhances the heterogeneous catalysis of alkene hydrogenation by Ni powders.
(11) An atmosphere of hydrogen eliminates this inhibition in the hydrogenase-containing T. foetus but not in E. invadens which lacks the enzyme.
(12) Vanadate-dependent oxidation of either pyridine nucleotide was inhibited by the addition of either superoxide dismutase or catalase, indicating that both superoxide and hydrogen peroxide may be intermediates in the process.
(13) Our findings suggest that (a) the inclusion of a liquid meal provides a reproducible method of measuring orocaecal transit using the lactulose hydrogen breath test, (b) rapid small bowel transit in thyrotoxicosis may be one factor in the diarrhoea which is a feature of the disease and (c) if altered gut transit is the cause of sluggish bowel habit in hypothyroidism, delay in the colon, and not small bowel, is likely to be responsible.
(14) Stepwise hydrogenation of metal tetradehydrocorrin salts (10 double bonds) yields a series of macrocycles containing 9, 8, 7, 6 and 5 double bonds and conditions necessary to obtain corrins have been established.
(15) For dipeptides containing the amino terminal residues glycine, alanine and phenylalanine, abstraction of the hydrogen from the carbon adjacent to the peptide nitrogen was the major process leading to the spin-adducts.
(16) (7) The first-order radical transformation rates are independent of the (initial) concentration of N3 or peptide and unaffected by urea (as a modifier of hydrogen bond structures).
(17) Intermolecular contacts occur in both oligomers in the minor groove: in the B form through twisted guanine-guanine hydrogen bonding, and in the Z form through base-base stacking and the water network.
(18) Equilibrium-partitioning measurements indicate that the relative affinities of different probes for PC-rich vesicles, in competition with HODMA or DOTAP vesicles, increase with increasing hydrogen-bonding capacity of the probe headgroup in the order PC less than N,N-dimethyl PE less than N-methyl PE less than PE approximately phosphatidyl-2-amino-1-propanol.
(19) When tissue metabolism was irreversibly inhibited by exposure to formaldehyde, hydrogen ion concentration and pCO2 were significantly decreased in the mucosal side of the chamber compared with the viable gall bladder.
(20) Based on the refined atomic coordinates of the tRNAphe in the orthorhombic crystal, on the recent advances in the distance dependence of the ring-current magnetic field effects and on the adopted values for the isolated hydrogen-bonded NH resonances, a computed spectrum consisting of 23 protons was constructed.
Star
Definition:
(n.) One of the innumerable luminous bodies seen in the heavens; any heavenly body other than the sun, moon, comets, and nebulae.
(n.) The polestar; the north star.
(n.) A planet supposed to influence one's destiny; (usually pl.) a configuration of the planets, supposed to influence fortune.
(n.) That which resembles the figure of a star, as an ornament worn on the breast to indicate rank or honor.
(n.) Specifically, a radiated mark in writing or printing; an asterisk [thus, *]; -- used as a reference to a note, or to fill a blank where something is omitted, etc.
(n.) A composition of combustible matter used in the heading of rockets, in mines, etc., which, exploding in the air, presents a starlike appearance.
(n.) A person of brilliant and attractive qualities, especially on public occasions, as a distinguished orator, a leading theatrical performer, etc.
(v. t.) To set or adorn with stars, or bright, radiating bodies; to bespangle; as, a robe starred with gems.
(v. i.) To be bright, or attract attention, as a star; to shine like a star; to be brilliant or prominent; to play a part as a theatrical star.
Example Sentences:
(1) 2.35pm: West Ham co-owner David Sullivan has admitted that a deal to land Miroslav Klose is unlikely to go through following the striker's star performances in South Africa.
(2) The greatest stars who emerged from the early talent shows – Frank Sinatra, Gladys Knight, Tony Bennett – were artists with long careers.
(3) Gove said in the interview that he did not want to be Tory leader, claiming that he lacked the "extra spark of charisma and star quality" possessed by others.
(4) Gassmann, whose late father, Vittorio , was a critically acclaimed star of Italian cinema in its heyday in the 1960s, tweeted over the weekend with the hashtag #Romasonoio (I am Rome), calling on the city’s residents to be an example of civility and clean up their own little corners of Rome with pride.
(5) Yves was the vulnerable, suffering artist and Pierre the fiercely controlling protector: a man who, in Lespert's film, is painfully aware of his public image – "the pimp who's found his all-star hooker".
(6) Bob Farnsworth, president of Nashville, Tennessee-based Hummingbird Productions, told trade publication Variety that the film was set for release in 2015 and would star Karolyn Grimes, who played George Bailey's daughter in the original film.
(7) Lady Gaga is not the first big music star to make a new album available early to mobile customers.
(8) Cape no longer has the monopoly on talent; the stars are scattered these days, and Franklin's "fantastically discriminating" deputy Robin Robertson can take credit for many recent triumphs, including their most recent Booker winner, Anne Enright.
(9) It also has one of the highest female university rates anywhere in the world.” The UAE-based Rotana hotels is planning to open a number of hotels in Iran, and France’s leading hotelier, Accor, is involved in at least two four-star hotels in the country.
(10) The EFDD role is a lucrative one and involves representing rightwing MEPs from across the EU, including populist parties such as the Swedish Democrats and Italy’s Five Star Movement.
(11) The former Arsenal and France star has signed a three-year contract to replace the sacked Jason Kreis at the helm of the second-year expansion club and will take over on 1 January, the team said.
(12) HTC needs to move from being star struck fan to star of its own ads.
(13) I called it following the Star Trek Non-Interference Directive.
(14) I'm just saying, in your … Instagrams, you don't have to have yourself with, walking with black people.” The male voice singles out Magic Johnson, the retired basketball star and investor: "Don't put him on an Instagram for the world to have to see so they have to call me.
(15) Where Jim Broadbent stands as an inherently warm screen presence, his co-star's image is rather more flinty.
(16) Along with a lengthy list of cameos, Girls actor Gaby Hoffmann and Party Down star Martin Starr appear as former Neptune High classmates new to the Veronica Mars universe.
(17) Mimics are stars and the country’s finest impersonators have their own television shows.
(18) While ITV1's Harry Hill and the final series of BBC1's Gavin and Stacey will stay put, Sky1 did manage to secure US drama House, starring Hugh Laurie, from Channel Five, paying an estimated £500,000 an episode.
(19) Olympic games are a competition between countries, but here spectators can freely choose which star to cheer for and unite as one,” said Inoki, a lawmaker in Japan’s upper house who was known as “Burning Fighting Spirit” in the ring.
(20) Likewise, Blanchett's co-star Alec Baldwin appeared to call for an end to the public nature of the row, terming Dylan's allegations "this family's personal struggle".