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Topic: Nucleus


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In the News (Tue 24 Nov 09)

  
  Nucleus Information Service Inc. - Welcome
Nucleus consultants understand the importance of delivering superior customer service and the personal touch.
Our staff members are on hand to answer all questions and are more than happy to help out where they can.
At Nucleus, our success comes from doing what we do best: combining technical know-how with the highest level of customer support and service available in the Internet industry.
www.nucleus.com   (218 words)

  
  Nucleus
The nucleus is found in all eukaryotic cells; this membrane-bound structure contains most of the cell's genetic material (excluded material is primarily the DNA found in mitonchondria).
The two primary functions of the nucleus are to control cytoplasmic chemical reactions, and to store information necessary for cell division.
Inside the nucleus are one or several nucleoli surrounded by the nucleoplasm made up of dissolved nucleotide triphosphates, enzymes, proteins, and transcription factors, and a network of fibers called the nuclear matrix.
www.iscid.org /encyclopedia/Nucleus   (211 words)

  
 Atomic nucleus - Wikipedia, the free encyclopedia
The nucleus of an atom is the very dense region in its center consisting of protons and neutrons.
The size of the nucleus is much smaller than the size of the atom itself, and almost all of the mass in an atom is made up from the protons and neutrons with almost no contribution from the electrons.
A heavy nucleus can contain hundreds of nucleons (neutrons and protons), which means that to some approximation it can be treated as a classical system, rather than a quantum-mechanical one.
en.wikipedia.org /wiki/Atomic_nucleus   (2226 words)

  
 Nucleus CMS - Wikipedia, the free encyclopedia
Nucleus CMS is an open-source content management system written in PHP, with a MySQL backend, primarily written and maintained by Wouter Demuynck.
Nucleus makes use of a callback function which has led to a plugin system that has inspired somewhere in the order of 50 to 100 distinct plugins.
Nucleus was written mostly by Demuynck while he was studying to be a "master in computer science" ("Licentiaat in de Informatica").
en.wikipedia.org /wiki/Nucleus_CMS   (469 words)

  
 Columbia Encyclopedia- nucleus - AOL Research & Learn
A proton is simply the nucleus of an ordinary hydrogen atom, the lightest atom, and has a unit positive charge.
The number of protons in a given nucleus is the atomic number of that nucleus and determines which chemical element the nucleus will constitute when surrounded by electrons.
A nucleus may be represented conveniently by the chemical symbol for the element together with a subscript and superscript for the atomic number and mass number.
reference.aol.com /columbia/_a/nucleus/20051206232209990029   (1763 words)

  
 comet nucleus comet nucleus comet nucleus comet nucleus   (Site not responding. Last check: 2007-11-07)
The nucleus is a repository of dust and frozen gases.
The composition of the nucleus is determined by measuring the composition of the coma.
The upper layers of the nucleus are volatile depleted, consisting of a refractory "mantle".
www.ifa.hawaii.edu /faculty/jewitt/nucleus.html   (530 words)

  
 Cell Organelles: The Nucleus and Nucleolus
Within the nucleus is the DNA responsible for providing the cell with its unique characteristics.
The prominent structure in the nucleus is the nucleolus.
The nucleolus produces ribosomes, which move out of the nucleus to positions on the rough endoplasmic reticulum where they are critical in protein synthesis.
www.cellsalive.com /cells/nucleus.htm   (158 words)

  
 RTOS- Embedded Real-Time OS
The Nucleus OS is a proven embedded operating system that works out of the box and lets you focus your efforts on differentiating your products.
The Nucleus OS supports the USB standard for this request.
The Nucleus OS provides an assortment of encryption and hashing technology to help overcome this risk.
www.mentor.com /nucleus   (262 words)

  
 Embedded Magazine, Issue 2 -- Nucleus article
The Nucleus EDGE builder is a front end for any tool that transforms one or more files from one format into another format; examples include a compiler that transforms a C file into an object module or a linker that transforms N object modules into an executable.
Nucleus EDGE kernel awareness gives you the ability to see a snapshot of the state of your system, as well as providing the ability to set thread-dependent breakpoints.
Nucleus EDGE provides a data-driven mechanism to describe how it should iterate objects of a given type and display their attributes.
www.xilinx.com /publications/magazines/emb_02/emb02-nucleus.htm   (2161 words)

  
 Nucleus Information Service Inc. - Rules & Policies
Member acknowledges that he/she/it is expressly prohibited from utilizing Nucleus, Nucleus' equipment or any Nucleus electronic mail address in connection with the sending of the same or substantially similar unsolicited electronic mail message, whether commercial or not, to a large number of recipients.
Member agrees to pay Nucleus $100 per day for an unintentional violation of this provision, but where warranted, such as in the case of an accidental transmission, Nucleus may waive all or part of the applicable charge.
Neither Nucleus nor anyone else involved in creating, producing or delivering the service shall be liable for any direct, indirect, incidental, special or consequential damages arising out of use of the service or inability to use the service.
www.nucleus.com /rules.html   (1694 words)

  
 Cell Organelles: The Nucleus and Nucleolus
Within the nucleus is the DNA responsible for providing the cell with its unique characteristics.
The prominent structure in the nucleus is the nucleolus.
The nucleolus produces ribosomes, which move out of the nucleus to positions on the rough endoplasmic reticulum where they are critical in protein synthesis.
cellsalive.com /cells/nucleus.htm   (148 words)

  
 nucleus - Search Results - MSN Encarta
Nucleus (atomic structure), in atomic structure, the positively charged central mass of an atom about which the orbital electrons revolve.
Nucleus (biology), membrane-bound structure of a cell that plays two crucial roles.
Atoms are made of smaller particles, called electrons, protons, and neutrons.
encarta.msn.com /encnet/refpages/search.aspx?q=nucleus   (141 words)

  
 1. Nucleus: Organizing JavaBean Components   (Site not responding. Last check: 2007-11-07)
Nucleus allows you to assemble applications through simple configuration files that specify what components are used by the application, what parameters are used to initialize those components, and how those components hook up to each other.
Nucleus is the mechanism that gives those components a place to live, and a way for those components to find each other.
Nucleus organizes application components into a hierarchy, and assigns each component in the hierarchy a name based on its position in the hierarchy.
www.atg.com /repositories/ContentCatalogRepository_en/manuals/D5.6.1/pguide/pguide0301.html   (403 words)

  
 nucleus concept from the Astronomy knowledge base   (Site not responding. Last check: 2007-11-07)
The radius of an atomic nucleus is directly proportional to the cube root of its mass.
For example, the hydrogen nucleus has a single proton; deuterium has one proton and one neutron and would be called an isotope of hydrogen.
A single proton is a hydrogen nucleus., A massive particle with positive electrical charge found in the nuclei of atoms.
www.site.uottawa.ca:4321 /astronomy/nucleus.html   (576 words)

  
 Nucleus, Atomic | World of Scientific Discovery
He concluded that in the interaction between an alpha particle and a nitrogen nucleus, a proton was ejected, leaving behind a new nucleus, that of oxygen.
And the mass of the nucleus would be the mass of 12 protons and 6 electrons.
According to this theory, a nucleus contains a number of protons equal to the nuclear charge (the atomic number) and a number of neutrons equal to the atomic mass number minus the number of protons.
www.bookrags.com /research/nucleus-atomic-wsd   (1205 words)

  
 The Cell Nucleus   (Site not responding. Last check: 2007-11-07)
The nucleus is surrounded by the cytoplasm inside a cell.
The nucleus is the pink half-sphere in the center of the cell.
Structurally, the nucleus is composed of three main parts, the nucleolus, the nuclear envelope, and the chromatin.
sun.menloschool.org /~birchler/cells/animals/nucleus   (353 words)

  
 Nucleus   (Site not responding. Last check: 2007-11-07)
The nucleus is a region of a eukaryotic cell that contains chromosomes and controls the structure and function of the cell.
All the organisms with a clearly defined nucleus in their cells are termed eukaryotes.
The nucleus appears as a rather large spherical, ovoid or sometimes elongated structure in the cell.
www.botany.uwc.ac.za /sci_ed/grade10/cells/nucleus.htm   (197 words)

  
 PlanetMath: nucleus   (Site not responding. Last check: 2007-11-07)
In other words, the nucleus is the set of elements that multiplicatively associate with all elements of
Accompanying the concept of a nucleus is that of the center of a nonassociative algebra
This is version 7 of nucleus, born on 2004-12-09, modified 2004-12-15.
planetmath.org /encyclopedia/Nucleus.html   (94 words)

  
 Glossary   (Site not responding. Last check: 2007-11-07)
Alpha Particle- A positively charged particle, indistinguishable from the nucleus of a Helium atom and consisting of two protons and two neutrons.
Fission- A nuclear reaction in which a nucleus is split into fragments, usually two pieces of comparable mass, accompanied by a release of energy.
Nucleus- The positively charged central region of an atom, composed of protons and neutrons and containing almost all of the mass of the atom.
reactor.engr.wisc.edu /glossary.html   (795 words)

  
 The Nucleus
The nucleus depicted above is now understood to be a quantum system composed of protons and neutrons, particles of nearly equal mass and the same intrinsic angular momentum (spin) of 1/2.
The simplest nucleus is that of hydrogen, which is just a single proton, while the largest nucleus studied has nearly 300 nucleons.
In addition to its atomic number and mass number, a nucleus is also characterized by its size, shape, binding energy, angular momentum, and (if it is unstable) half-life.
www.lbl.gov /abc/wallchart/chapters/02/2.html   (357 words)

  
 Binary Star Development Corporation - Creators of Nucleus AE - Nucleus Overview
Nucleus is an integrated environment for the development, management and operation of business, government and scientific computing applications.
Nucleus is a suite of software tools and utilities to satisfy the most demanding development, maintenance, production, re-engineering or data-warehousing projects.
Traditional applications can be readily enhanced with Nucleus, adding features demanded by today’s rapidly changing marketplace, while mitigating the risks of application re-engineering.
www.binarystar.com /nucleus.html   (567 words)

  
 Nucleus-Nucleus
As the projectile velocity generally is large, and the velocity of the fragments produced by compound nucleus disintegration is also large, special relativity equations are used to calculate their momenta and energies.
It will be supposed that the collision between projectile and the bombarded nucleus is central, and compound nucleus fission is symmetrical with respect to its center of mass with relativity and autodynamics momenta conservation.
It is accepted by everyone that there is an excitation energy in the compound nucleus, and it seems that the fission residue energies after compound nucleus decay are bigger than the projectile energy.
www.autodynamicsuk.org /Nucleus-NucleusExpert.htm   (4045 words)

  
 Exploring Comets - Anatomy of a Comet   (Site not responding. Last check: 2007-11-07)
The nucleus, or body, of a comet has been described as a dusty snowball consisting of tiny pieces of rocky material embedded in a mass of ice and frozen gases.
The coma is a cloud of gases that surrounds the nucleus of a comet.
When comets come near the Sun, their tails become visible because heat from the Sun vaporizes some of the icy nucleus or head and sunlight reflects from the vapor.
www.nasm.si.edu /research/ceps/etp/comets/comet_anatomy.html   (269 words)

  
 Health Telematics (AIM) Final Report
NUCLEUS is a project developing the prototype of an integrated patient dossier.
NUCLEUS has developed and implemented, through Performer Act Customisation, advanced facilities, which allow the respective (individual and/or categories of) healthcare providers to register the characteristics and protocols of their primary processes, and the templates, according to which they want their professional activities be documented in the EPR.
As a result of the NUCLEUS project, West Middlesex University Hospital and others in the UK have or are about to structure their local IT strategies around the act management, client server principles that NUCLEUS proposed.
www.ehto.org /aim/volume2/nucleus.html   (1524 words)

  
 eSky: Galactic Nucleus   (Site not responding. Last check: 2007-11-07)
There is evidence to suggest that a massive fl hole lies in its central regions, and indeed this may be a common feature of spiral galaxies in general.
If the Galactic Nucleus was visible from Earth, it would appear as a narrow ellipse stretching over some 42° between Ophiuchus and Scorpius.
The central point of the Nucleus lies in Sagittarius, beyond the faint star 3 Sagittarii.
www.glyphweb.com /esky/concepts/galacticnucleus.html   (104 words)

  
 Nucleus   (Site not responding. Last check: 2007-11-07)
The nucleus is found in all eukaryotic cells.
It is a double membrane that separates the nucleus from the rest of the cell.
It allows the contents of the nucleus, the nucleoplasm, to have a different chemical composition than the rest of the cell.
www.stemnet.nf.ca /~dpower/cell/nucleus.htm   (271 words)

  
 Comet Nucleus Comet Nucleus Comet Nucleus Comet Nucleus   (Site not responding. Last check: 2007-11-07)
Perhaps the simplest idea is that the nucleus is a single, coherent body of uniform internal composition.
The monolithic nucleus would be strong, so it is not clear that his model can explain observations of comets splitting in response to tiny tensile forces.
Some people like to think that the sub-units within the nucleus might be planetesimals from very different original locations in the solar nebula.
www.ifa.hawaii.edu /faculty/jewitt/interior.html   (378 words)

  
 Life Science Safari - Nucleus
The largest organelle in the cytoplasm of a eukaryotic cell is usually the nucleus, a structure that directs all the activities of the cell.
The nucleus is like a manager who directs everyday business for a company and passes on information to new cells.
The nucleus contains genetic blueprints for the operations of the cell.
vilenski.org /science/safari/cellstructure/nucleus.html   (55 words)

  
 GLOSSARY N
The chemical that crosses the synaptic cleft and causes the transmission of the nerve message in an adjacent neuron or the stimulation of an effector cell (muscle or gland).
The large (mass approximately equal to 1 atomic mass unit), electrically neutral particle that may occur in the atomic nucleus.
nucleolus A round or oval body in the nucleus of a eukaryotic cell; consists of DNA and RNA and produces ribosomal RNA (pl.: nucleoli).
www.emc.maricopa.edu /faculty/farabee/BIOBK/BioBookglossN.html   (861 words)

  
 Cell-Biology.com: Cellular Organelles   (Site not responding. Last check: 2007-11-07)
The nucleus is a spherical, sometimes elongated structure that contains the genetic material, the DNA, of the cell.
This spherical structure within the nucleus is composed of DNA, RNA and protein.
Within the nucleus among the nucleosomes is a matrix composed of proteins, metabolites and ions.
www.cell-biology.com /organ.html   (2233 words)

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