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  • Controllability  (6)
  • internal resonance  (3)
  • India  (2)
  • Biochemical parameters  (1)
  • Fisheries
  • Springer  (12)
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  • Springer  (12)
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  • 1
    Electronic Resource
    Electronic Resource
    Epidemiological survey of rhinosporidiosis in Kanyakumari district of Tamil Nadu (1988)
    Springer
    Mycopathologia 101 (1988), S. 177-179 
    Details
    ISSN: 1573-0832
    Keywords: rhinosporidiosis ; epidemiology ; fungus infection ; India
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract One hundred and twelve nasal polyps received along with full history from three different hospitals of Kanyakumari district of Tamil Nadu during the period 1983–1987 were found positive for rhinosporidiosis on histopathological examination. Among the four taluks (countries) the majority of the cases (41.1 per cent) came from Agastheeswaram, followed by Kalkulam (28.6 per cent), Thovalai (17.0 per cent) and Vilavancode (13.3 per cent). The 11–20 years age group found to be highly susceptible (60 per cent). There was no sex prepondence in contracting the disease as the cases were evenly distributed between both sexes. These findings exhibited the endemic nature of the disease in Kanyakumari district. Unreported cases to an extent of 9 to 40 per cent were encountered during the ENT disease diagnostic camps conducted in nine high incidence villages. Further 8 more cases were detected in addition to cases attended in the hospitals and ENT camps when a complete enumeration of cases was undertaken in Pallam village. Thus the actual number of cases found in the district need a stratified random sampling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00437036
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  • 2
    Electronic Resource
    Electronic Resource
    Ocular rhinosporidiosis in Tamil Nadu, India (1990)
    Springer
    Mycopathologia 111 (1990), S. 5-8 
    Details
    ISSN: 1573-0832
    Keywords: Rhinosporidiosis ; ocular ; Tamil Nadu ; India
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A high incidence of ocular rhinosporidiosis in Kanyakumari district of Tamil Nadu, India is reported. Among the four taluks (sub-division for administration), highest occurrence was found in Agastheeswaram taluk (51.2%) followed by Kalkulam (24.4%), Thovalai (22%) and Vilavancode (2.4%). The disease occurred among both sexes equally and preponderance of a particular sex was not observed. The young adolescents were found to be more susceptible. The disease was found in all socio-economic strata and among all communities and persons belonging to different religious groups. Most of the patients gave a history of bathing in muddy stagnant pools of water.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02277293
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  • 3
    Electronic Resource
    Electronic Resource
    Influence of dietary rice culture material containing cyclopiazonic acid on certain serum biochemical parameters of broiler chickens (1995)
    Springer
    Mycopathologia 132 (1995), S. 161-166 
    Details
    ISSN: 1573-0832
    Keywords: Biochemical parameters ; Broiler chicken ; Cyclopiazonic acid ; Mycotoxin ; Penicillium griseofulvum ; Rice culture material
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Three hundred and forty-eight Vencob broiler chickens were fed diets containingPenicillium griseofulvum rice culture material with 0, 12.5, 25 and 50 ppm of the mycotoxin cyclopiazonic acid (CPA) for 28 days. Serum samples were collected from 9 birds in each group at weekly intervals to study the effect of sublethal doses of CPA on certain serum biochemical parameters. Significant reductions in weight gains (p〈0.01) and feed consumptions (p〈0.05) were observed at 25 and 50 ppm. Exocrine pancreas showed degenerative and necrotic changes in CPA fed chickens. The CPA had significant (p〈0.05) influence on serum total protein, albumin, cholesterol, amylase and lipase levels. CPA did not affect serum glucose levels. There was a decline in levels of total serum protein and albumin in CPA fed groups. But serum cholesterol, amylase and lipase showed dose-dependent increases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01103982
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  • 4
    Electronic Resource
    Electronic Resource
    Controllability of nonlinear systems via fixed-point theorems (1987)
    Springer
    Journal of optimization theory and applications 53 (1987), S. 345-352 
    Details
    ISSN: 1573-2878
    Keywords: Controllability ; nonlinear systems ; fixed-point theorems ; delay systems ; Schauder's fixed-point theorem ; perturbed linear systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract This article presents a survey of papers published on controllability of nonlinear systems, including nonlinear delay systems, by means of fixed-point principles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00938943
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  • 5
    Electronic Resource
    Electronic Resource
    Asymptotic null controllability of nonlinear perturbed systems (1994)
    Springer
    Journal of optimization theory and applications 83 (1994), S. 167-179 
    Details
    ISSN: 1573-2878
    Keywords: Controllability ; nonlinear systems ; perturbations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper, sufficient conditions are obtained for the asymptotic null controllability of the system $$\dot x(t) = g(t,x(t)) + B(t,x(t))u(t) + f(t,x(t),u(t)).$$ The results are obtained by using the Leray-Schauder fixed-point theorem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02191767
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  • 6
    Electronic Resource
    Electronic Resource
    Local null controllability of nonlinear functional differential systems in Banach space (1996)
    Springer
    Journal of optimization theory and applications 88 (1996), S. 61-75 
    Details
    ISSN: 1573-2878
    Keywords: Controllability ; nonlinear functional differntial systems ; Schauder fixed-point theorem
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Sufficient conditions for the local null controllability of non-linear functional differential systems with unbounded linear operators in Banach space are established. The results are obtained using the semigroup of linear operators, fractional powers of operators, and the Schauder fixed-point theorem. Applications to parabolic differential systems are given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02192022
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  • 7
    Electronic Resource
    Electronic Resource
    Controllability of nonlinear integrodifferential systems in Banach space (1995)
    Springer
    Journal of optimization theory and applications 84 (1995), S. 83-91 
    Details
    ISSN: 1573-2878
    Keywords: Controllability ; nonlinear systems ; integrodifferential systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Sufficient conditions for controllability of nonlinear integrodifferential systems in a Banach space are established. The results are obtained using the Schauder fixed-point theorem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02191736
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  • 8
    Electronic Resource
    Electronic Resource
    Relative controllability of perturbations of nonlinear systems (1989)
    Springer
    Journal of optimization theory and applications 63 (1989), S. 51-56 
    Details
    ISSN: 1573-2878
    Keywords: Controllability ; Schauder fixed-point theorem ; distributed delays
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Sufficient conditions are derived for the relative controllability of perturbations of nonlinear systems with distributed delays in the control variables. The results are a generalization of previous results and are obtained by using Schauder's fixed-point theorem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00940730
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  • 9
    Electronic Resource
    Electronic Resource
    Controllability of nonlinear systems to affine manifolds (1990)
    Springer
    Journal of optimization theory and applications 64 (1990), S. 15-27 
    Details
    ISSN: 1573-2878
    Keywords: Controllability ; affine manifolds ; Leray-Schauder fixedpoint theorem ; generalized boundary conditions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Controllability to an affine manifold involves controlling a system to a target defined by the generalized boundary condition Γx=r, where Γ:C n →R n is a bounded linear operator on the continuous functions, as defined for ordinary differential equations by Kartsatos. In this paper, sufficient conditions are obtained for such controllability for linear systems and for a class of nonlinear perturbations of linear systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00940019
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  • 10
    Electronic Resource
    Electronic Resource
    Nonlinear motions of beam-mass structure (1990)
    Springer
    Nonlinear dynamics 1 (1990), S. 39-61 
    Details
    ISSN: 1573-269X
    Keywords: structural dynamics ; internal resonance ; modulation equations ; Hopf bifurcations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We study the planar dynamic response of a flexible L-shaped beam-mass structure with a two-to-one internal resonance to a primary resonance. The structure is subjected to low excitation (mili g) levels and the resulting nonlinear motions are examined. The Lagrangian for weakly nonlinear motions of the undamped structure is formulated and time averaged over the period of the primary oscillation, leading to an autonomous system of equations governing the amplitudes and phases of the modes involved in the internal resonance. Later, modal damping is assumed and modal-damping coefficients, determined from experiments, are included in the analytical model. The locations of the saddle-node and Hopf bifurcations predicted by the analysis are in good agreement, respectively, with the jumps and transitions from periodic to quasi-periodic motions observed in the experiments. The current study is relevant to the dynamics and modeling of other structural systems as well.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01857584
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