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  • 1
    Electronic Resource
    Electronic Resource
    Correlation of the Anticholinesterase and Molluscicidal Activity of the Latex of Euphorbia royleana on the Snail Lymnaea acuminata (1984)
    s.l. : American Chemical Society
    Journal of natural products 47 (1984), S. 702-705 
    Details
    ISSN: 1520-6025
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/np50034a023
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of cypermethrin, mexacarbate, and phorate on phospholipid and lipid peroxidation in the snail Lymnaea acuminata (1993)
    Springer
    Bulletin of environmental contamination and toxicology 51 (1993), S. 68-71 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00201002
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  • 3
    Electronic Resource
    Electronic Resource
    Two types of ELF hiss observed at Varanasi, India (1999)
    Springer
    Annales geophysicae 17 (1999), S. 1260-1267 
    Details
    ISSN: 0992-7689
    Keywords: Ionosphere (equatorial ionosphere; ionosphere-magnetosphere interactions; wave-particle interactions)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The morphology of ELF hiss events observed at low-latitude ground station Varanasi (L = 1.07, geomagnetic latitude 14°55′N) are reported, which consist of two types: (1) events which propagated in ducted mode along the geomagnetic field line corresponding to observing station Varanasi and (2) events which propagated in ducted mode along higher L-values (L = 4–6), after reaching the lower edge of ionosphere excite the Earth-ionosphere wave guide and propagate towards equator to be received at Varanasi. To understand the generation mechanism of ELF hiss, incoherent Cerenkov radiated power from the low latitude and middle latitude plasmasphere are evaluated. Considering this estimated power as an input for wave amplification through wave-particle interaction, the growth rate and amplification factor is evaluated which is too small to explain the observed wave intensity. It is suggested that some non-linear mechanism is responsible for the generation of ELF hiss.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-999-1260-5
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  • 4
    Electronic Resource
    Electronic Resource
    Role of Gregarine Parasite Ascogregarina culicis (Apicomplexa: Lecudinidae) in the Maintenance of Chikungunya Virus in Vector Mosquito (2003)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 50 (2003), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: . Ascogregarina culicis and Ascogregarina taiwanensis are common gregarine parasites of Aedes aegypti and Aedes albopictus mosquitoes, respectively. These mosquito species are also known to transmit dengue and Chikungunya viruses. The sporo-zoites of these parasites invade the midgut epithelial cells and develop intracellularly and extracellularly in the gut to complete their life cycles. The midgut is also the primary site for virus replication in the vector mosquitoes. Therefore, studies were carried out with a view to determine the possible role of these gregarines in the vertical transmission of dengue and Chikungunya viruses from larval to adult stage. Experiments were performed by exposing first instar mosquito larvae to suspensions containing parasite oocysts and viruses. Since Ascogregarina sporozoites invade the midgut of first instar larvae, the vertical transmission was determined by feeding the uninfected first instar larvae on the freshly prepared homogenates from mosquitoes, which were dually infected with viruses and the parasite oocysts. Similarly, the role of protozoan parasites in the vertical transmission of viruses was determined by exposing fresh first instar larvae to the dried pellets of homogenates prepared from the mosquitoes dually infected with viruses and the parasite oocysts. Direct vertical transmission and the vertical transmission of CHIK virus through the oocyst of the parasites were observed in the case of Ae. aegypti mosquitoes. It is suggested that As. culicis may have an important role in the maintenance of CHIK virus during the inter-epidemic period.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.2003.tb00153.x
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  • 5
    Electronic Resource
    Electronic Resource
    Characteristics of whistler ducts recorded at Gulmarg (1996)
    Springer
    Earth, moon and planets 73 (1996), S. 181-186 
    Details
    ISSN: 1573-0794
    Keywords: Diffused whistler ; ducts ; electron density ; dispersion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Morphological features of whistlers recorded at low latitude ground station Gulmarg (geomag. lat., 24
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00114150
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  • 6
    Electronic Resource
    Electronic Resource
    Intravenous thyrotropin releasing hormone (TRH) enhances the excitatory actions of acetylcholine (ACh) on rat cortical neurons (1978)
    Springer
    Cellular and molecular life sciences 34 (1978), S. 390-390 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary I. v. administered TRH (1.25-10 mg/kg) enhanced the excitatory actions of iontophoretically applied ACh on spontaneously active cerebral cortical neurons of pentobarbital-anaesthetized rats. These observations are consistent with the hypothesis of a cholinergic-link in the anti-anaesthetic actions of exogenously administered TRH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01923054
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  • 7
    Electronic Resource
    Electronic Resource
    In vivo andIn vitro studies on synergism with anticholinesterase pesticides in the snailLymnaea acuminata (1983)
    Springer
    Archives of environmental contamination and toxicology 12 (1983), S. 483-487 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract The synergistic effects of piperonyl butoxide (PB)2, sulfoxide (SU), and dimethyl amino aniline (DAA) used in conjunction with two organophosphate pesticides (phorate and formothion) and two carbamate pesticides (mexacarbate and carbaryl) were examined in terms of the LC50 and acetylcholinesterase (AChE) inhibition in the snailLymnaea acuminata. The three synergists reduced the LC50 of phorate, formothion, mexacarbate, and carbaryl at exposure periods ranging from 24 to 144 hr. PB and SU had strong synergistic action; DAA had little effect; the highest synergistic ratio (70) was found with carbaryl and PB. The synergists enhanced thein vitro inhibition of cholinesterase caused by the pesticides; the synergistic effect onin vitro inhibition, however, was lower, compared to the change in the LC50.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01057593
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of Different Combinations of MGK-264 or Piperonyl Butoxide with Plant-Derived Molluscicides on Snail Reproduction (2000)
    Springer
    Archives of environmental contamination and toxicology 38 (2000), S. 182-190 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract. Effect of sublethal treatment (20% and 60% of LC50/24 h) of plant-derived molluscicides, viz. Polianthes tuberosa, Trachyspermum ammi, Allium sativum powder; Azadirachta indica oil; oleoresin of Zingiber officinale; and their active molluscicidal component in combination (1:5) with MGK-264 or piperonyl butoxide on the reproduction of snail Lymnaea acuminata have been studied. It was observed that the combination of plant derived molluscicide and their active molluscicidal components, viz. tigogenin, hecogenin, azadirachtin, allicin, thymol, and [6]-gingerol combination with MGK-264 or piperonyl butoxide caused a significant reduction in fecundity, hatchability, and survival of young snails. Withdrawal of snails to fresh water after the above treatment caused a significant recovery in the fecundity of L. acuminata.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002449910024
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of Single and Binary Combinations of Plant-Derived Molluscicides on Reproduction and Survival of the Snail Achatina fulica (2000)
    Springer
    Archives of environmental contamination and toxicology 39 (2000), S. 486-493 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract The effects of sublethal treatments (20% and 60% of LC50/24 h) with plant-derived molluscicides on the reproduction of the giant African snail Achatina fulica were studied. Azadirachta indica oil, Cedrus deodara oil, Allium sativum bulb powder, and Nerium indicum bark powder singly and binary combinations on reproduction and survival of A. fulica were investigated. Repeated treatment occurred on day 0, day 15, and day 30. These plant-derived molluscicides significantly reduced fecundity, egg viability, and survival of A. fulica within 15 days. Discontinuation of the treatments after day 30 did not lead to a recovery trend in the next 30 days. Day 0 sublethal treatment of all the molluscicides caused a maximum reduction in protein, amino acid, DNA, RNA, and phospholipid levels and simultaneous increase in lipid peroxidation in the ovotestis of treated A. fulica. It is believed that sublethal exposure of these molluscicides on snail reproduction is a complex process, involving more than one factor in reducing the reproductive capacity of A. fulica.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002440010131
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  • 10
    Electronic Resource
    Electronic Resource
    A bianchi type-III cosmological model in Brans-Dicke theory for vacuum field (1984)
    Springer
    Astrophysics and space science 105 (1984), S. 67-71 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An exact solution of Brans-Dicke (B-D) field equations for the metric tensor of a spatially homogeneous Bianchi type-III configuration has been obtained for vacuum field. It is shown that in the limiting case the solution reduces to that of Einstein field equations in vacuum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00651208
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