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  • Cambridge University Press (CUP)  (188)
  • 2005-2009  (188)
  • 1
    Online Resource
    Online Resource
    Filling Gaps in Indo-US Stellar Spectral Library using Principal Component Analysis
    Cambridge University Press (CUP) ; 2006
    In:  Proceedings of the International Astronomical Union Vol. 2, No. S241 ( 2006-12)
    Details
    In: Proceedings of the International Astronomical Union, Cambridge University Press (CUP), Vol. 2, No. S241 ( 2006-12)
    Type of Medium: Online Resource
    ISSN: 1743-9213 , 1743-9221
    URL: Article
    DOI: 10.1017/S1743921307007557
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2006
    detail.hit.zdb_id: 2170724-8
    SSG: 16,12
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  • 2
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    Online Resource
    The effect of abiotic factors on the toxicity of cypermethrin against the snail Lymnaea acuminata in the control of fascioliasis
    Cambridge University Press (CUP) ; 2009
    In:  Journal of Helminthology Vol. 83, No. 1 ( 2009-03), p. 39-45
    Details
    In: Journal of Helminthology, Cambridge University Press (CUP), Vol. 83, No. 1 ( 2009-03), p. 39-45
    Abstract: Every month during the year 2006–2007, the 24, 48, 72 and 96 h LC 50 values of a molluscicide, cypermethrin, were determined for a snail Lymnaea acuminata , with concomitant estimation of levels of temperature, pH, dissolved oxygen and carbon dioxide and electrical conductivity, both in control and test water. On the basis of a 24 h toxicity assay, it was noted that LC 50 values of 10.39, 10.90 and 11.19 mg l − 1 during the months of May, June and July, respectively, were most effective in killing the snails, while the molluscicide was least effective in the month of January, when its 24 h LC 50 was 65.84 mg l − 1 .There was a significant positive correlation between LC 50 of cypermethrin and levels of dissolved O 2 /pH of water in corresponding months. On the contrary, a negative correlation was observed between LC 50 and dissolved CO 2 /temperature of test water in the same months. In order to ascertain that such a relationship between toxicity and abiotic factors is not coincidental, the nervous tissue of the snail was assayed for the activity of acetylcholinesterase (AChE), acid phosphatase (ACP) and alkaline phosphatase (ALP) to sublethal concentrations (40% and 80%) of 24 h LC 50 during each of the 12 months of the same year. The findings confirmed that abiotic factors indeed influence toxicity of cypermethrin in the snail. A significant positive rank correlation between AChE, ACP and ALP activity did exist following exposure to the corresponding sublethal concentrations. Moreover, there was a maximum inhibition of 61.29 and 76.16% of AChE and ACP, respectively, in snails exposed to 80% of the 24 h LC 50 in the month of May. A similar treatment caused a maximum inhibition of 70.53% of ALP activity in the month of June. This work shows conclusively that the best time to control the snail population with cypermethrin is during the months of May and June.
    Type of Medium: Online Resource
    ISSN: 0022-149X , 1475-2697
    URL: Article
    DOI: 10.1017/S0022149X08086252
    RVK:
    WA 15000
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2009
    detail.hit.zdb_id: 2027960-7
    SSG: 12
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  • 3
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    Online Resource
    Diversity and distribution of lichens in relation to altitude within a protected biodiversity hot spot, north-east India
    Cambridge University Press (CUP) ; 2008
    In:  The Lichenologist Vol. 40, No. 1 ( 2008-01), p. 47-62
    Details
    In: The Lichenologist, Cambridge University Press (CUP), Vol. 40, No. 1 ( 2008-01), p. 47-62
    Abstract: A study of the diversity and distribution of lichens at 10 sites within the Mehao Wildlife Sanctuary in Arunachal Pradesh, India, revealed 177 species, belonging to 71 genera and 35 families. The Sanctuary exhibited almost all the habit and habitat groups of lichens within its climatically heterogenous and altitudinally (400–2700 m) varied landscape. Among the different habitat groups, obligately corticolous lichens were dominant (133 species), followed by facultatively corticolous lichens (occurring on both rock and bark; 25 species), saxicolous lichens (17 species) and terricolous lichens (2 species). The corticolous habitat group was dominated by crustose species while saxicolous and terricolous groups were made up of mostly fruticose species. A substantial number of species (77) occurred at single sites only, and each of the 10 sites supported a distinct lichen assemblage. Altitude and humidity were the putative key factors controlling the diversity and distribution of lichens within the Sanctuary. The mid altitude range 1400–1600 m had the greatest lichen diversity, which showed a unimodal pattern in relation to altitude.
    Type of Medium: Online Resource
    ISSN: 0024-2829 , 1096-1135
    URL: Article
    DOI: 10.1017/S0024282908007214
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2008
    detail.hit.zdb_id: 1471008-0
    SSG: 12
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  • 4
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    Online Resource
    A study of ion-acoustic solitons and double layers in a multispecies collisionless weakly relativistic plasma
    Cambridge University Press (CUP) ; 2005
    In:  Journal of Plasma Physics Vol. 71, No. 1 ( 2005-02), p. 23-34
    Details
    In: Journal of Plasma Physics, Cambridge University Press (CUP), Vol. 71, No. 1 ( 2005-02), p. 23-34
    Abstract: The effect on the propagation of ion-acoustic solitons and double layers has been studied in collisionless weakly relativistic plasma consisting of two-electron temperature with isothermal electrons and finite ion temperature. The Korteweg de-Vries (KdV) equation is derived for ion-acoustic solitons propagating in a collisionless plasma. This equation is solved in a stationary frame to obtain the expression for soliton phase velocity, soliton width and peak soliton amplitude. It is observed that these quantities are significantly influenced by the relativistic effect, ion temperature, low-temperature electron density and ratio of cold to hot electron temperatures. Many features expected from hot ion theory and two species electron plasmas automatically emerge. The analysis is further extended to higher order nonlinearity and modified Korteweg de-Vries (mKdV) equation is derived. Even though compressive and rarefactive ion-acoustic solitons are obtained, only rarefactive ion-acoustic double layers are obtained in the present investigation.
    Type of Medium: Online Resource
    ISSN: 0022-3778 , 1469-7807
    URL: Article
    DOI: 10.1017/S0022377804002958
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2005
    detail.hit.zdb_id: 2004297-8
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  • 5
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    Online Resource
    Localized coherent nonlinear wave structures in dusty plasma with non-thermal ions
    Cambridge University Press (CUP) ; 2007
    In:  Journal of Plasma Physics Vol. 73, No. 6 ( 2007-12), p. 921-932
    Details
    In: Journal of Plasma Physics, Cambridge University Press (CUP), Vol. 73, No. 6 ( 2007-12), p. 921-932
    Abstract: In the present research paper, the characteristics of dust-acoustic solitary waves (DASWs) and double layers (DLs) are studied. Ions are treated as non-thermal and variable dust charge is considered. The Korteweg–de Vries equation is derived using a reductive perturbation method. It is noticed that compressive solitons are obtained up to a certain range of relative density δ (= n i0 / n e0 ) beyond which rarefactive solitons are observed. The study is further extended to investigate the possibility of DLs. Only compressive DLs are permissible. Both DASWs and DLs are sensitive to variation of the non-thermal parameter.
    Type of Medium: Online Resource
    ISSN: 0022-3778 , 1469-7807
    URL: Article
    DOI: 10.1017/S0022377807006393
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2007
    detail.hit.zdb_id: 2004297-8
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  • 6
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    Online Resource
    Genetic fingerprinting and identification of differentially expressed genes in isolates of Leishmania donovani from Indian patients of post-kala-azar dermal leishmaniasis
    Cambridge University Press (CUP) ; 2008
    In:  Parasitology Vol. 135, No. 1 ( 2008-01), p. 23-32
    Details
    In: Parasitology, Cambridge University Press (CUP), Vol. 135, No. 1 ( 2008-01), p. 23-32
    Abstract: Post-kala-azar dermal leishmaniasis (PKDL) is an unusual dermatosis that develops as a sequel in 5–15% of cured cases of kala-azar (KA) after months or years of treatment in India. Molecular differences are reported to exist between the KA and PKDL isolates which may underlie the diversity in clinical manifestations of the disease. Here, arbitrary primed-PCR (AP-PCR) has been used for genetic fingerprinting of parasite isolates from dermal lesions of PKDL patients ( n =14) and compared with bone-marrow derived parasites from KA patients ( n =3). All isolates showed an identical AP-PCR pattern with 4 arbitrary primers. Further, AP-PCR was exploited to identify the stage regulated genes of the parasite. Six polymorphic fragments were identified in PKDL in comparison with KA isolates, and were subjected to Northern blot analysis. Five polymorphic fragments represented transcribed sequences; 4 out of 5 drew differential expression in pro- and amastigote stages, although the expression was comparable between PKDL and KA isolates. The study led to the identification of genes, which exhibit stage-regulated expression in Leishmania donovani derived from PKDL or KA patients, including a putative phosphodiesterase, DEAD box RNA helicase, iron superoxide dismutase b ( fesodb ) and a hypothetical protein. Demonstration of transcripts of DEAD box RNA helicase in PKDL and KA diseased tissues implicates its role in disease pathogenesis.
    Type of Medium: Online Resource
    ISSN: 0031-1820 , 1469-8161
    URL: Article
    DOI: 10.1017/S0031182007003484
    RVK:
    WA 15000
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2008
    detail.hit.zdb_id: 1491287-9
    SSG: 12
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  • 7
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    Online Resource
    ASSESSING THE IMPACT OF PARTICIPATORY RESEARCH IN RICE BREEDING ON WOMEN FARMERS: A CASE STUDY IN EASTERN UTTAR PRADESH, INDIA
    Cambridge University Press (CUP) ; 2008
    In:  Experimental Agriculture Vol. 44, No. 1 ( 2008-01), p. 97-112
    Details
    In: Experimental Agriculture, Cambridge University Press (CUP), Vol. 44, No. 1 ( 2008-01), p. 97-112
    Abstract: This paper assesses farmer adoption of rice varieties and new genotypes introduced through participatory varietal selection (PVS) in villages which represent submergence- and drought/submergence-prone villages in eastern Uttar Pradesh, India. It focuses on the involvement of women farmers in participatory research for screening improved varieties for areas which suffer from abiotic stresses. It further assesses the impact on the decision-making authority (or women's empowerment) on rice varietal choice, seed acquisition and disposal, and crop management after participating in PVS trials. It suggests strategies to empower women farmers in making sound and timely decisions on farm-related matters and to enhance their roles in accelerating the adoption of new varieties.
    Type of Medium: Online Resource
    ISSN: 0014-4797 , 1469-4441
    URL: Article
    DOI: 10.1017/S0014479707005923
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2008
    detail.hit.zdb_id: 2016166-9
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  • 8
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    Online Resource
    Cross-checking reliability of some available stellar spectral libraries using artificial neural networks
    Cambridge University Press (CUP) ; 2006
    In:  Proceedings of the International Astronomical Union Vol. 2, No. S241 ( 2006-12)
    Details
    In: Proceedings of the International Astronomical Union, Cambridge University Press (CUP), Vol. 2, No. S241 ( 2006-12)
    Type of Medium: Online Resource
    ISSN: 1743-9213 , 1743-9221
    URL: Article
    DOI: 10.1017/S174392130700751X
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2006
    detail.hit.zdb_id: 2170724-8
    SSG: 16,12
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  • 9
    Online Resource
    Online Resource
    Exopolysaccharide-producing mesophilic lactic cultures for preparation of fat-free Dahi – an Indian fermented milk
    Cambridge University Press (CUP) ; 2009
    In:  Journal of Dairy Research Vol. 76, No. 1 ( 2009-02), p. 90-97
    Details
    In: Journal of Dairy Research, Cambridge University Press (CUP), Vol. 76, No. 1 ( 2009-02), p. 90-97
    Abstract: Forty seven exopolysaccharide (EPS) producing mesophilic lactic acid bacteria have been isolated from Dahi and raw milk and selected cultures were evaluated for their influence on rheological and sensory properties of fat-free Dahi. Two isolates namely B-6 and KT-24 that showed promising technological attributes were identified as Lc . lactis subsp. lactis strains. B-6 produced 184±2 mg/l EPS in deproteinized whey medium compared with 193±1 mg/l by KT-24. EPS produced by B-6 was a heteropolysaccharide (consisting of glucose and mannose, 1:7·4) with molecular weight of 3·0×10 4  Da whereas KT-24 EPS was a homopolysaccharide (rhamnose) having molecular weight of 4·5×10 4  Da. Both EPS producing cultures showed significant changes in rheological and sensory properties of fat-free Dahi. Dahi prepared by these cultures was more viscous, adhesive, sticky, showed lower susceptibility to whey separation, and received higher sensory scores than Dahi prepared with non-EPS producing culture.
    Type of Medium: Online Resource
    ISSN: 0022-0299 , 1469-7629
    URL: Article
    DOI: 10.1017/S0022029908003865
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2009
    detail.hit.zdb_id: 2000010-8
    SSG: 22
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  • 10
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    INFLUENCE OF RESOURCE QUALITY OF ORGANIC INPUTS ON RICE-BARLEY DRYLAND AGRO-ECOSYSTEM: VARIATIONS IN BIOLOGICAL PRODUCTIVITY, GRAIN YIELD AND EFFICIENCY OF NITROGEN USE
    Cambridge University Press (CUP) ; 2007
    In:  Experimental Agriculture Vol. 43, No. 2 ( 2007-04), p. 149-161
    Details
    In: Experimental Agriculture, Cambridge University Press (CUP), Vol. 43, No. 2 ( 2007-04), p. 149-161
    Abstract: A two-year study was undertaken in a tropical dryland agro-ecosystem to evaluate the effect of the application of soil amendments with contrasting chemical natures on crop productivity, grain yield, N-uptake and N-use efficiencies. The treatments involved the addition of equivalent amounts of N (80 kg N ha−1) through chemical fertilizer and three organic inputs at the beginning of the annual cycle: Sesbania aculeata shoots (high quality, C/N 16), wheat straw (low quality, C/N 82) and Sesbania +wheat straw (high and low quality combined, C/N 47), together with a control treatment. Test crops consisted of an annual sequence of rice and barley, sown in the rainy and winter seasons, respectively. Fertilizer and Sesbania inputs resulted in higher total net productivity (TNP) for the rice crop (47 % and 32 % increases over the control, respectively) than the combined (+28 %) and wheat straw treatments (+10 %). During the succeeding barley crop, maximum TNP was recorded in the Sesbania +wheat straw treatment (+52 %), followed by wheat straw (+43 %), fertilizer (+19 %) and Sesbania (+17 %). The TNP and grain yields of both crops added together were higher in Sesbania +wheat straw and fertilizer treatments compared to a single applications of either Sesbania or wheat straw. The Sesbania +wheat straw and fertilizer treatments resulted in more efficient utilization of N compared to the other treatments. Crop roots played a pivotal role in N-recovery from the soil and their N concentrations differed significantly ( p 〈 0.05) due to the application of soil amendments. Across different treatments, crop root biomass was strongly correlated with crop N-uptake ( r = 0.81, n = 10, p 〈 0.05), recovery efficiency ( r = 0.81, n = 8, p 〈 0.05) and agronomic efficiency ( r = 0.81, n = 8, p 〈 0.05). It is suggested that the combined application of high and low quality resources modulated N release, resulting in relatively higher productivity through the annual cropping cycle. Such combined inputs may prove useful in developing low input, environment friendly soil management practices in tropical dryland agro-ecosystems.
    Type of Medium: Online Resource
    ISSN: 0014-4797 , 1469-4441
    URL: Article
    DOI: 10.1017/S0014479706004571
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2007
    detail.hit.zdb_id: 2016166-9
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