(n.) One of the Diatomaceae, a family of minute unicellular Algae having a siliceous covering of great delicacy, each individual multiplying by spontaneous division. By some authors diatoms are called Bacillariae, but this word is not in general use.
(n.) A particle or atom endowed with the vital principle.
Example Sentences:
(1) The cytoplasmic and chloroplast ribosomes from the marine diatom Cylindrotheca fusiformis were isolated and characterized.
(2) The concentration of acetate in the interstitial water fell from about 100 microM (immediately after sedimentation of the spring diatom bloom) to a relatively constant value of about 20 microM in late summer, during which acetate utilization appeared to be balanced by production.
(3) The affinity of the diatom for glucose was greater than that shown by the bacterium, but the Km for glucose transport, 1.5x10-5M was too high to allow effective removal of glucose at in situ concentrations.
(4) We have cloned and sequenced a 5200 base restriction fragment and an overlapping 3100 base fragment of the large single copy region of the chloroplast genome of the diatom Odontella sinensis, which hybridized to several ATPase gene probes.
(5) The material consisted of 285 successive drownings, which were subject to autopsy at the Helsinki University Department of Forensic Medicine between 1978 and 1986 and for whom diatom analysis was carried out.
(6) Substituting size-fractionated silica particles for diatoms (the fossilized cell walls of unicellular algae) allowed for the purification of microgram amounts of genomic DNA, plasmid DNA, and rRNA from cell-rich sources, as exemplified for pathogenic gram-negative bacteria.
(7) In diatom and yeast spindles, elongation of the spindle in anaphase (anaphase B) may be explained by microtubule assembly at polar microtubule ends in the spindle mid-zone and sliding of the antiparallel microtubules from the opposite poles.
(8) Cells of the diatom Cyclotella meneghiniana were exposed in a closed system to 0.245 ppm 1,2,3-trichlorobenzene.
(9) Cells of the diatom Cyclotella meneghiniana were exposed in a closed system to 0.245 ppm 1,3,5-trichlorobenzene.
(10) Extracted diatom DNA separates into two bands in CsCl-Hoechst 33258 dye gradients.
(11) Quinones constituting the electron transfer systems in a marine unicellular diatom, Phaeodactylum tricornutum, were isolated and identified chromatographically.
(12) A new sulfonolipid has been isolated from a non-photosynthetic diatom, Nitzschia alba, by thin-layer and column chromatography on silicic acid, and characterized by 35S-labeling, mobility on thin-layer chromatography, infrared and NMR spectroscopy and products of hydrolysis, as a ceramide sulfonic acid (N-acyl sphingosine-1-sulfonic acid).
(13) Among eukaryotes, red algae emerged first; and, later, thraustochytrids (a Proctista group), ascomycetes (yeast), green plants (green algae and land plants), "yellow algae" (brown algae, diatoms, and chrysophyte algae), basidiomycetes (mushrooms and rusts), slime- and water molds, various protozoans, and animals emerged, approximately in that order.
(14) The spindle of the colonial diatom Fragilaria contains two distinct sets of spindle microtubules (MTs): (a) MTs comprising the central spindle, which is composed of two half-spindles interdigitated to form a region of "overlap"; (b) MTs which radiate laterally from the poles.
(15) The conformation of berchemolide was calculated by MNDO (modified neglect of diatomic overlap).
(16) Usually algal populations change from a dominance of diatoms and green algae to dominance by blue-green algae.
(17) But it seems to have stuck.” The following year, Crutzen and Eugene Stoermer – an American diatom specialist who had been using the term informally since the 1980s – jointly published an article proposing that the Anthropocene should be considered a new Earth epoch, on the grounds that “mankind will remain a major geological force for many millennia, maybe millions of years to come”.
(18) The particles are surfaces for the attachment of diatoms and hydroids.
(19) Mitotic spindles isolated from the diatom Stephanopyxis turris consist of two half-spindles of closely interdigitating microtubules that slide relative to one another in the presence of ATP, reinitiating spindle elongation (anaphase B) in vitro.
(20) We describe here a simple procedure for isolating diatom spindles which are capable of anaphase spindle elongation in vitro.
Tripoli
Definition:
(n.) An earthy substance originally brought from Tripoli, used in polishing stones and metals. It consists almost wholly of the siliceous shells of diatoms.
Example Sentences:
(1) Harati was commander of the Tripoli Brigade during the Libyan revolution.
(2) What seems beyond doubt is that Koussa has long represented the old guard which for decades was close to Gaddafi, but which – if the Tripoli rumour mill is to be believed – has recently been pushed aside by Gaddafi's competing sons.
(3) A Zliten hospital spokesman told Associated Press that 60 bodies had been pulled from the wreckage, though Fozi Awnais, from the health ministry in Tripoli, later said 47 people had died and 118 more were injured.
(4) Simon said he ruled against Belhaj because American, as well as British, officials were involved in the operation – the rendition of Belhaj and his pregnant wife to Tripoli in 2004 – which Belhaj wanted a British court to declare unlawful.
(5) Group A Villarreal, Borussia Mönchengladbach, FC Zurich, Apollon Limassol Group B FC Copenhagen, Brugge, Torino, HJK Helsinki Group C Tottenham Hotspur , Besiktas, Partizan Belgrade, Asteras Tripoli Group D Red Bull Salzburg, Celtic , Dinamo Zagreb, FC Astra Group E PSV, Panathinaikos, Estoril Praia, Dynamo Moscow Group F Internazionale, Dnipro, St Etienne, FK Karabakh Group G Sevilla, Standard Liège, Feyenoord, Rijeka Group H Lille, Wolfsburg, Everton , Krasnodar Group I Napoli, Sparta Prague, Young Boys, Slovan Bratislava Group J Dynamo Kyiv, Steaua Bucharest, Rio Ave, AaB Group K Fiorentina, PAOK, Guingamp, Dinamo Minsk Group L Metalist Kharkiv, Trabzonspor, Legia Warsaw, Lokeren
(6) The discovery and publication of the Tripoli documents came as a profound shock to MI6.
(7) There are so many African migrants in Libya wanting to make the dangerous trip to Europe that Tripoli zoo has been turned into a processing centre for them.
(8) Elsewhere in Tripoli, a Ghanaian reckons some of his friends would have stayed in Libya if the country was stable.
(9) Saadi's entire family were bundled aboard an aircraft in Hong Kong and flown to Tripoli in March 2004.
(10) On Monday, the UN refugee agency also called on the Libyan government in Tripoli to close its refugee detention centres , describing conditions as inhumane and shocking.
(11) In the early hours of Friday, exactly 25 years after US forces bombed Gaddafi's Bab al-Aziziya compound in central Tripoli, thousands gathered in defiance of the new international coalition against the Libyan regime's brutal efforts to suppress the uprising from the east.
(12) That government, led by a nine-strong presidency, has yet to set foot in Libya, with the country’s two existing rival governments, in Tripoli and Tobruk, both rejecting it.
(13) But these are only the latest of the clashes and atrocities that have engulfed Libya since Nato's "liberation": including bombings, assassinations, the kidnapping of the prime minister, the seizure of oil terminals by warlords, the explusion of 40,000 mainly black Libyans from their homes, and the killing of 46 protesters on the streets of Tripoli in one incident — ignored by the states that supposedly went to war to protect civilians.
(14) In Tripoli, the DoD had persuaded the Libyans to fly their C-130 to Benghazi.
(15) In Bani Walid, south of Tripoli, tank transporters carrying dirty armoured fighting vehicles drew a small crowd, and an appreciative volley of machine gun fire.
(16) In the area of Tripoli, measles haemagglutination-inhibiting (HI) antibodies were found at a titre of greater than or equal to 1:10 in 97% of the adult population, and in 78%, 100% and 97.1% of schoolchildren of primary, preparatory and secondary schools respectively.
(17) The deal was accepted on Thursday by some members of Libya Dawn, the rebel coalition that seized power in Tripoli in July 2014 and forced the internationally recognised government to retreat to the eastern city of Tobruk.
(18) Then a leading dissident member of the Libyan Islamic Fighting Group (LIFG), Belhaj was seized in Bangkok and handed over to the CIA, who he alleges tortured him and injected him with truth serum before flying him back to Tripoli for interrogation.
(19) Fred Abrahams of Human Rights Watch, who is in Tripoli, said anti-tank missiles were among weapons looted by Libyans before anti-Gaddafi militias overran western towns.
(20) April 1998 Libyan government officials, lawyers and British representatives of the bombing victims meet in Tripoli.