role of mercuric chloride in plant tissue culture
surface sterilisation of explants
as a catalyst for the conversion of acetylene to vinyl chloride, the precursor to polyvinylchloride: For this application, the mercuric chloride is supported on carbon in concentrations of about 5 weight percent. This technology has been eclipsed by the thermal cracking of 1,2-dichloroethane. Other significant applications of mercuric chloride include its use as a depolarizer in batteries and as a reagent in organic synthesis and analytical chemistry (see below). It is being used in plant tissue culture for surface sterilisation of explants such as leaf or stem nodes. Mercuric chloride is occasionally used to form an amalgam with metals, such
Mercury(II) chloride
as a catalyst for the conversion of acetylene to vinyl chloride, the precursor to polyvinylchloride: For this application, the mercuric chloride is supported on carbon in concentrations of about 5 weight percent. This technology has been eclipsed by the thermal cracking of 1,2-dichloroethane. Other significant applications of mercuric chloride include its use as a depolarizer in batteries and as a reagent in organic synthesis and analytical chemistry (see below). It is being used in plant tissue culture for surface sterilisation of explants such as leaf or stem nodes. Mercuric chloride is occasionally used to form an amalgam with metals, such
Mercury(II) chloride
channel 4, and she was replaced at the anchor desk by Angela Pace. Pace would leave for WBNS-TV in 1992, and Doug Adair and Jimmy Crum both retired in 1994. WCMH's new anchoring team featured Colleen Marshall, who had been a reporter for the station since the mid-1980s; and Cabot Rea, a former weekend sports anchor and weekday features reporter. The pair helmed WCMH-TV's evening newscasts until Rea's retirement on December 18, 2015. Marshall and Rea worked together overall for 23 years, the longest tenured co-anchoring team in Columbus television history. The changes resulted in an earlier audience fall-off, but
WCMH-TV
Scientific visualization Scientific visualization (also spelled scientific visualisation) is an interdisciplinary branch of science. According to Friendly (2008), it is "primarily concerned with the visualization of three-dimensional phenomena (architectural, meteorological, medical, biological, etc.), where the emphasis is on realistic renderings of volumes, surfaces, illumination sources, and so forth, perhaps with a dynamic (time) component". It is also considered a subset of computer graphics, a branch of computer science. The purpose of scientific visualization is to graphically illustrate scientific data to enable scientists to understand, illustrate, and glean insight from their data. One of the earliest examples of three-dimensional scientific visualisation
Scientific visualization
illnesses with a known medical cause where psychological factors may nonetheless play a role (e.g., asthma can be exacerbated by anxiety). Psychogenic disease Psychogenic disease (or psychogenic illness) is a name given to physical illnesses that are believed to arise from emotional or mental stressors, or from psychological or psychiatric disorders. It is most commonly applied to illnesses where a physical abnormality or other biomarker has not yet been identified. In the absence of such "biological" evidence of an underlying disease process, it is often assumed that the illness must have a psychological cause, even if the patient shows no
Psychogenic disease
with years of abuse by Bean and finally decides to get his payback on Bean. Although Mr. Bean is the only significant character in the programme, others appear usually as foils for his various antics. Other than his girlfriend Irma Gobb (Matilda Ziegler) there are more characters in each episode. However several notable British actors and comedians appear alongside Atkinson in the series as various one-off supporting characters, including Owen Brenman, Richard Briers, Roger Sloman, Angus Deayton, Stephen Frost, Nick Hancock, Christopher Ryan, Paul Bown, Caroline Quentin, Danny La Rue, Roger Brierley, Roger Lloyd-Pack, Rupert Vansittart, David Battley, David Schneider,
Mr. Bean
for confiscated property. U.S. Rep. Aime J. Forand (D- RI) introduced a bill to amend the parish's 1856 charter to allow the Church's civil corporation to receive compensation at the contemporary value of the property, rather than the cap set at its charter written over a hundred years before. The construction of Interstate I-395 and 6th & 7th Street ramps razed the St. Dominic Priory, School, and Convent. The old St. Dominic's convent was finished in the summer of 1880 and contained thirty-six rooms. The old priory was at 515 Sixth St., SW. Following demolition of the original priory under
St. Dominic Catholic Church (Washington, D.C.)
were fused and not two separate structures. Somatic embryos are formed from plant cells that are not normally involved in the development of embryos, i.e. ordinary plant tissue. No endosperm or seed coat is formed around a somatic embryo. Applications of this process include: clonal propagation of genetically uniform plant material; elimination of viruses; provision of source tissue for genetic transformation; generation of whole plants from single cells called protoplasts; development of synthetic seed technology. Cells derived from competent source tissue are cultured to form an undifferentiated mass of cells called a callus. Plant growth regulators in the tissue culture
Plant embryogenesis
will generally overgrow the tissue culture medium before there is significant growth of plant tissue. Some cultured tissues are slow in their growth. For them there would be two options: (i) Optimizing the culture medium; (ii) Culturing highly responsive tissues or varieties. Necrosis can spoil cultured tissues. Generally, plant varieties differ in susceptibility to tissue culture necrosis. Thus, by culturing highly responsive varieties (or tissues) it can be managed. Aerial (above soil) explants are also rich in undesirable microflora. However, they are more easily removed from the explant by gentle rinsing, and the remainder usually can be killed by surface
Plant tissue culture
was one of the three chemicals used for railroad tie wood treatment between 1830 and 1856 in Europe and the United States. Limited railroad ties were treated in the United States until there were concerns over lumber shortages in the 1890s. The process was generally abandoned because mercuric chloride was water-soluble and not effective for the long term, as well as being highly poisonous. Furthermore, alternative treatment processes, such as copper sulfate, zinc chloride, and ultimately creosote; were found to be less toxic. Limited kyanizing was used for some railroad ties in the 1890s and early 1900s. Mercuric chloride was
Mercury(II) chloride
the 1800s. When applied to a negative, the mercury(II) chloride whitens and thickens the image, thereby increasing the opacity of the shadows and creating the illusion of a positive image. For the preservation of anthropological and biological specimens during the late 19th and early 20th centuries, objects were dipped in or were painted with a "mercuric solution". This was done to prevent the specimens' destruction by moths, mites and mold. Objects in drawers were protected by scattering crystalline mercuric chloride over them. It finds minor use in tanning, and wood was preserved by kyanizing (soaking in mercuric chloride). Mercuric chloride
Mercury(II) chloride
2.38 Å; six more chlorides are more distant at 3.38 Å. Mercuric chloride is obtained by the action of chlorine on mercury or mercury(I) chloride, by the addition of hydrochloric acid to a hot, concentrated solution of mercury(I) compounds such as the nitrate: Heating a mixture of solid mercury(II) sulfate and sodium chloride also affords volatile HgCl, which sublimes and condenses in the form of small rhombic crystals. Its solubility increases from 6% at to 36% in . In the presence of chloride ions, it dissolves to give the tetrahedral coordination complex [HgCl]. The main application of mercuric chloride is
Mercury(II) chloride
surface sterilisation of explants
Title: Mercury(II) chloride. Content: as a catalyst for the conversion of acetylene to vinyl chloride, the precursor to polyvinylchloride: For this application, the mercuric chloride is supported on carbon in concentrations of about 5 weight percent. This technology has been eclipsed by the thermal cracking of 1,2-dichloroethane. Other significant applications of mercuric chloride include its use as a depolarizer in batteries and as a reagent in organic synthesis and analytical chemistry (see below). It is being used in plant tissue culture for surface sterilisation of explants such as leaf or stem nodes. Mercuric chloride is occasionally used to form an amalgam with metals, such
Disinfectant.
Antimicrobial agent
surface sterilization of explants
disinfectant
surface sterilization of explants
disinfectant