Loading...
  • alpha-particles
  • We then present a new prediction of the existence of the "alpha cluster condensed states" in the self-conjugate 4 n nuclei around the breakup threshold energy into n alpha-particles. (springer.com)
  • Ernest Rutherford later devised an experiment with his research partner Hans Geiger and with help of Ernest Marsden , that involved the deflection of alpha particles (helium nuclei) directed at a thin sheet of metal foil. (wikipedia.org)
  • isolation
  • Hi, I will be very grateful for any advice on nuclei isolation from Arabidopsis: if you have a good working protocol for high yield nuclei please share it with me. (bio.net)
  • If anyone out there is familiar with techinques for isolation of nuclei from filamentous fungi, I would appreciate any help you would care to offer. (bio.net)
  • occupies
  • Forming a critical part of the anteroventral third ventricle and the midline of the lamina terminalis , the median preoptic nucleus occupies an anatomical position that allows it to play an important role in many aspects of homeostatic regulation. (wikipedia.org)
  • In a nucleus which occupies a certain energy level (for example, the ground state ), each nucleon can be said to occupy a range of locations. (wikipedia.org)
  • protons
  • As reported in the journal Nature, important conclusions about the nature of the forces between the protons and neutrons in nuclei can be drawn by comparing the experimental results and new theoretical values. (idw-online.de)
  • Atomic nuclei, in which there is an extreme imbalance with respect to the numbers of protons and neutrons, are particularly sensitive to subtle components of nuclear forces. (idw-online.de)
  • In this diagram, protons and neutrons look like little balls stuck together, but an actual nucleus (as understood by modern nuclear physics ) cannot be explained like this, but only by using quantum mechanics . (wikipedia.org)
  • The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom , discovered in 1911 by Ernest Rutherford based on the 1909 Geiger-Marsden gold foil experiment . (wikipedia.org)
  • In the nucleus, the two protons and two neutrons are depicted in red and blue. (wikipedia.org)
  • This depiction shows the particles as separate, whereas in an actual helium atom, the protons are superimposed in space and most likely found at the very center of the nucleus, and the same is true of the two neutrons. (wikipedia.org)
  • nuclear
  • In fact, there are many examples that show that nuclear size is not obligatorily linked with chromosome number or DNA content: the nuclei in different tissues of the same mammal vary considerably in size, despite having the same chromosome number. (springer.com)
  • The branch of physics concerned with the study and understanding of the atomic nucleus, including its composition and the forces which bind it together, is called nuclear physics . (wikipedia.org)
  • dense
  • The motoneurons in Onuf's nucleus contain a dense array of serotonin and norepinephrine receptors and transmitters and are activated by glutamate. (wikipedia.org)
  • CELLS
  • This small group of neural cells is located between S1 and S2 or S2 and S3 and although Onuf's nucleus is located primarily in S2, it can extend to the caudal end of the first sacral segment or to the middle part of the third sacral segment. (wikipedia.org)
  • The sizes of the cells in Onuf's nucleus are small in comparison to other lateral group cells. (wikipedia.org)
  • showed that Onuf nucleus cells have the same cytoskeletal abnormalities as alpha-motor neurons in motor neuron disease/amyotrophic lateral sclerosis. (wikipedia.org)
  • Diseases characterized by disturbances in urination and defecation affect autonomic and Onuf's nucleus cells similarly. (wikipedia.org)
  • Onuf's nucleus cells are anatomically linked with the sacral parasympathetic motor neurons and have many peptidergic nerve terminals. (wikipedia.org)
  • Cells in Onuf's nucleus resemble autonomic neurons and do not receive afferents from adjacent neurons. (wikipedia.org)
  • Nuclei were first described by Brown in 1833 and were quickly recognized as a constant feature of animal and plant cells. (springer.com)
  • Hi, I have been trying to counterstain nuclei of Drosophila S2 cells that have been fixed in paraformaldehyde. (bio.net)
  • In most types of eukaryotic cells, the nucleus breaks down as chromosomes condense during cell division. (jax.org)
  • Composition
  • The hypothalamus is highly involved in maintaining homeostasis of the body, and the median preoptic nucleus is no exception, contributing to regulation of blood composition, body temperature , and non-REM sleep . (wikipedia.org)
  • The role that the median preoptic nucleus plays in osmoregulation is in blood composition and volume, including fluid and salt balance, and produces responses ranging from behavioral to endocrine . (wikipedia.org)
  • dust
  • A cometary nucleus is composed of rock , dust , and frozen gases . (wikipedia.org)
  • The potato-shaped nucleus of Halley's comet (15 × 8 × 8 km) contains equal amounts of ice and dust. (wikipedia.org)
  • Hale-Bopp appeared bright to the unaided eye because its unusually large nucleus gave off a great deal of dust and gas. (wikipedia.org)
  • protein
  • Goidl, J. A. & Allen, W. R . (1978) Does protein synthesis occur within the nucleus? (springer.com)
  • Protein located in the host nucleus, which is the most obvious organelle in any host eukaryotic cell. (uniprot.org)
  • cell
  • Nuclei vary in size from about 3 µ m to 25 µ m in diameter, depending on cell type, and contain chromosome diploid numbers that range from 6 (Indian muntjac) to 92 (Anotomys leander , a rodent) for mammalian species. (springer.com)
  • Dear all, I am searching for a method that will allow me to isolate intact nuclei from rat brain tissue (we aren't tooled up for cell culture right now - otherwise I would use one of the many techniques available for such a situation). (bio.net)
  • The nucleus is the most important part of the cell, and governs its life. (dictionary.com)
  • However
  • It's known that mammals have a circadian rhythm in body temperature (Tb) that depend on the integrity of the suprachiasmatic nucleus (SCN), However, fasting also influences the Tb in the resting period and the presence of the SCN is essential for this process. (wikipedia.org)
  • Let it be granted, however, that at first a nucleus of twelve hundred slaves is formed. (dictionary.com)
  • However, measuring such nuclei is extraordinarily difficult, because they can only be produced in tiny numbers and decay immediately, within the blink of an eye. (idw-online.de)
  • found
  • During a flyby in September 2001, the Deep Space 1 spacecraft observed the nucleus of Comet Borrelly and found it to be about half the size (8×4×4 km) of the nucleus of Halley's Comet. (wikipedia.org)
  • Also, Onuf's nucleus is found almost symmetrically on both sides of the ventral horn. (wikipedia.org)
  • Sexual dimorphism of Onuf's nucleus has been found in dogs, monkeys, and humans. (wikipedia.org)
  • small
  • Classical images of separate particles fail to model known charge distributions in very small nuclei. (wikipedia.org)
  • help
  • To win you have to start winning and these very attractive candidates could help form a nucleus to rebuild the Party. (dictionary.com)
  • article
  • A July 1884 New York Times article called her "the nucleus and center of the whole organization of crime in New York City. (dictionary.com)
  • large
  • The neurons in Onuf's nucleus are motoneurons, and like most motoneurons they are characterized by their mulipolarity and large Nissl bodies . (wikipedia.org)
  • The spores are globose or nearly so, with a large " nucleus " nearly filling the spore. (dictionary.com)
  • volume
  • The median preoptic nucleus is highly involved in cardiovascular regulation, including the release of atrial natriuretic peptide by the heart in response to high blood volume . (wikipedia.org)
  • brain
  • Connectivity with other regions of the hypothalamus , such as the ventrolateral preoptic area (VLPO) and with regions of the brain stem also allow the median preoptic nucleus to be involved in other aspects of homeostasis . (wikipedia.org)
  • core
  • Thermoregulation includes both responses to infection and to decreased core temperature upon cutaneous exposure to cold, both of which involve the median preoptic nucleus as an important mediator of sensory input and regulatory output. (wikipedia.org)
  • Despite project close announcement one and a half years ago, some enthusiastic Japanese developers and users have been maintaining Nucleus CMS core. (nucleuscms.org)
  • several
  • for example, polymorphonuclear leucocytes have a lobulose nucleus of several interconnected parts, ciliate protozoans are characterized by a kidney-shaped macronucleus, and there are various shapes among the lower eukaryotes. (springer.com)
  • features
  • Three-dimensional computer simulations indicate the major structural features observed on cometary nuclei can be explained by pairwise low velocity accretion of weak cometesimals. (wikipedia.org)
  • form
  • The force exerted on the coma by the Sun's radiation pressure and solar wind cause an enormous tail to form, which points away from the Sun. A typical comet nucleus has an albedo of 0.04. (wikipedia.org)
  • The Russian people should form the state at the center, "a nucleus around which other peoples are gathered. (dictionary.com)
  • This collection will doubtless form the nucleus of a larger museum. (dictionary.com)
  • produce
  • Both the connectivity and anatomical position of the median preoptic nucleus allow it to be both a relay station and mediator for sensory and regulatory information, and produce neural , endocrine and behavioral responses to maintain homeostasis . (wikipedia.org)