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    Wyświetlanie 1-4 z 4
    Tytuł:
    Investigation of insecticidal activity of some alfa,beta-unsaturated carbonyl compounds and their synergistic combination with natural products against Phenacoccus solenopsis tinsley
    Autorzy:
    Rani, A.
    Jain, S.
    Gautam, R.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/66246.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    In continuation of our previous work, the current study explores an environmentally benign approach for the control of Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) using a synergistic combination of α,bT-unsaturated carbonyl compounds (1a-1e; 2a-2i) and the natural products, neem oil (N1) and nicotinic acid (N2). Our approach also evaluates the insecticidal activity of 3-(5-chloro-1,3-diaryl-1H-pyrazol-4-yl)-1-arylprop-2-en-1-one(2j-2o) consisting of bioactive moieties, viz., chalcone and pyrazole, in a single molecular structure. Compounds 2l and 2o exhibited maximum activity with 58% and 50 % of mortality, respectively, under laboratory conditions. Among various test combinations, 2a-N2 showed maximum insecticidal activity, with 54% mortality, comparable to that of the most active newly synthesized compound, 2l, followed by 1c-N1 and 2g-N2 with 52% mortality. The compound 2a was also found to be non-toxic to potato tuber used as a plant substrate in the current investigation.
    Źródło:
    Journal of Plant Protection Research; 2012, 52, 1
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development and validation of rapid LC-MS with electrospray ionization for the quantification of pramipexole in human plasma
    Autorzy:
    Lavudu, P.
    Rani, A. P.
    Sekharan, C. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/411617.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Pramipexole
    LC-MS
    human plasma
    bioanalytical metod
    Opis:
    A rapid, accurate and precise LC-MS method is described for the quantitative determination of pramipexole in human plasma matrix using ropinirole as internal standard. Pramipexole and ropinirole were extracted from plasma by liquid-liquid extraction technique. The method was validated over the concentration range of 100-2514 pg/mL. The method was found to have acceptable accuracy, precision, linearity and selectivity. The mean extraction recovery from spiked plasma samples was in the range of 79.415-87.00 %. The intra-day accuracy of the assay ranged from 98.924 to 112.236 % and intra-day precision ranged from 3.489 to 6.756 %. Inter-day accuracy and precision results for quality control samples ranged between 100.340 and 107.443% of nominal and precision is observed to be 3.970-5.714 %. The pramipexole was found to be stable after several stability studies. The proposed method yielded a quick, simple and reliable protocol for estimating pramipexole concentrations in human plasma.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 18; 1-15
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Two dimensional deformation of a multilayered thermoelastic half-space due to surface loads and heat source
    Autorzy:
    Vashishth, A. K.
    Rani, K.
    Singh, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/265888.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    źródło ciepła
    obciążenia powierzchniowe
    termoelastyczność
    multilayered half-space
    thermoelastic
    propagator matrix
    surface loads
    heat source
    Opis:
    This article deals with a 2-D problem of quasi-static deformation of a multilayered thermoelastic medium due tovsurface loads and heat source. The propagator matrix is obtained for the multilayered formalism of thermoelastic layers. Analytical solutions, in terms of the displacements, stresses, heat flux and temperature function, are obtained for normal strip and line loads, shear strip and line loads and strip and line heat sources. Numerical computation of the obtained analytical expressions is also done. The effects of layering have been studied. For the verification of the results, results of earlier studies have been obtained as particular cases of the present study.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2020, 25, 1; 177-197
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Indication of urban expansion of Gujranwala city (Pakistan) by remote sensing and GIS
    Autorzy:
    Aziz, A.
    Anwar, M.M.
    Rani, M.
    Ahmad, S.
    Zaheer, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049753.pdf
    Data publikacji:
    2019
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    remote sensing
    industrial revolution
    Earth surface system
    human influence
    ecological process
    human activity
    temporal variation
    GIS
    urban sprawl
    ecology
    time
    Opis:
    Land-cover by land-use shows the influence of human on earth surface by different phenomena’s, ecological processes and human activities, its indication is a parameter of measurement how and with which extent the human influenced the natural surface with temporal variations. The change detection technique is used based upon the temporal observations from 2000 to 2015. Study area is one of the most populated city of Pakistan where industrial revolution is at its peak. The whole study area is categorized into four classes (i.e. Agricultural, Barren, Built-up and semi natural surfaces). The observational intervals were divided into three main classes i.e. 2000 to 2005, 2005 to 2010 and 2010 to 2015. Remarkable changes were occurred in built up area from 2000 to 2015 which is 38.6 % of total area, while the total change/decreased in barren land is -332 9(ha), similarly the Parks and grasses are also in decreasing extent and affect the local biodiversity and natural environment. The land cover is directly proportional to population expansion of urban city. For making the prediction of future urban expansion, previously occurred changes were aggregated to come up with a single value and then adding it to the recent land-use values. The mapping and analysis was undertaken through techniques of remote sensing and GIS, which proved to be very effective to measure the changes, and trend of changes with time, this mapping not only tells us the scale of change but, also tells us the patterns and the forces which causes these changes.
    Źródło:
    Environment, Earth and Ecology; 2019, 3, 1; 13-23
    2543-9774
    2451-4225
    Pojawia się w:
    Environment, Earth and Ecology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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