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    Wyświetlanie 1-11 z 11
    Tytuł:
    XRF analysis of Carica papaya leaves of semi arid region of Kachchh
    Autorzy:
    Ram, P.N.
    Ram, V.R.
    Khatri, T.T.
    Vyas, S.J.
    Dave, P.N.
    Powiązania:
    https://bibliotekanauki.pl/articles/11682.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Cutch zob.Kachchh
    Kachh zob.Kachchh
    India
    X-ray fluorescence
    Carica papaya
    Caricaceae
    leaf
    chemical composition
    semi-arid zone
    Kachchh
    Kutch zob.Kachchh
    Opis:
    The objective of the present investigation was to study the chemical composition of leaves of Carica papaya belonging to family Caricaceae growing in semi-arid region of Kachchh district, Gujarat, India. The leaves of C. papaya were subjected to Energy Dispersive X-ray Fluorescence (EDXRF) and were analyzed for different mineral composition. As the X-ray Fluorescence is one of the most reliable and accurate, as well as it is also a consistent and non-destructive method for analysis of major and trace elements using a single pressed pellet. During the study it was found that Oxygen, Calcium, Magnessium, Potassium were noted in higher amounts, compared to that of other elements like Silicon, Sulphur, Phosphorus, Chloride, Strontium, Stanous, Aluminium, Cromium and Mangenese, whereas the elements which were not detected in leaves of C. papaya are Vanadium, Titanium, Cobalt and Tantalum.
    Źródło:
    International Letters of Natural Sciences; 2014, 19
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal analytical characteristics by TGA-DTA-DSC analysis of Carica papaya leaves from Kachchh
    Autorzy:
    Ram, V.R.
    Ram, P.N.
    Khatri, T.T.
    Vyas, S.J.
    Dave, P.N.
    Powiązania:
    https://bibliotekanauki.pl/articles/11265.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Opis:
    An experimental study on Carica papaya leaves was carried out in Thermo gravimetric analyzer (TGA), Differential Thermal Analyzer (DTA) and Differential Scanning Calorimetric (DSC) analyzer to investigate the effects of reaction atmosphere on thermal chemical characteristics. Experimental results show that In DSC curve, Endothermic peak at 101 °C is attributed to dehydration/Water loss from surface and pores of the powder sample. Step at 215 °C is associated with second order phase transition such as Glass Transition and it should be further confirmed in second heating (During heat- cool- heat cycle). Endothermic peak at 336 °C is associated protease thermal decomposition /Beta Cyclodextrin breakdown. In the TGA Curve, The initial 4 % weight loss is due to water loss from surface/pores of powder sample. Second weight loss between 200-450 °C is associated to degradation of cellulose and hemicellulose.
    Źródło:
    International Letters of Natural Sciences; 2014, 21
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on thermodynamic properties of Fe³⁺-substituted yttrium iron garnets
    Autorzy:
    Modi, K.
    Jha, P.
    Raval, P.
    Vasoya, N.
    Vyas, K.
    Meshiya, U.
    Gohil, R.
    Jadav, K.
    Gohil, N.
    Sharma, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1158494.pdf
    Data publikacji:
    2016-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.47.Lx
    05.70.-a
    Opis:
    This paper presents the molar heat capacity at constant volume C_{V} and characteristic Debye temperature θ, determination for the garnet system, Y_{3-x}Fe_{5+x}O_{12}, x=0.0, 0.1, 0.3, and 0.5 at 300 K. The θ values determined from Waldron's approach and those calculated using ultrasonic mean sound velocity, V_{mo}, are in agreement. C_{V} values calculated from the Einstein theory are consistent with the reported one and theoretically expected values using the Dulong-Petit law, but Waldron's approach based on the Debye theory and the Debye T³ law fail to estimate consistent C_{V} values. The result has been discussed in the light of key physical differences between the two theories. The applicability of the Kieffer model for molar heat capacity at constant pressure, C_{p}, determination has been tested. Finally, an attempt has been made to estimate electronic contribution and the temperature at which the lattice contribution and electronic contribution to the molar heat capacity become comparable.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 3; 778-784
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stress-tolerant antagonistic rhizobacteria isolated from the medicinal plant Tinospora cordifolia
    Autorzy:
    Vyas, P.
    Kaur, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/80127.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    medicinal plant
    Tinospora cordifolia
    stress tolerance
    rhizobacteria
    auxin production
    1-amino-cyclopropane-1-carboxylate synthase
    antagonism
    phosphate solubilization
    hydrogen cyanide
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2018, 99, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stress-tolerant antagonistic plant growth-promoting rhizobacteria from Zea mays
    Autorzy:
    Kaur, A.
    Devi, S.R.
    Vyas, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/66648.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    plant disease
    biological control
    plant health
    antagonism
    plant growth
    Bacillus
    maize
    Zea mays
    stress tolerance
    phosphate solubilization
    Opis:
    Biological control of plant diseases is strongly emerging as an effective alternative to the use of chemical pesticides and fungicides. Stress tolerance is an important attribute in the selection of bacteria for the development of microbial inoculants. Fourteen salt-tolerant bacteria showing different morphological features isolated from the rhizosphere of maize were evaluated for different plant growth-promoting activities. All isolates showed auxin production ranging from 5 to 24 μg ⋅ ml–1 after 48 h incubation in tryptophan supplemented media. Phosphate solubilization ranged from 15 to 419 μg ⋅ ml–1. 1-aminocycloproprane- 1-carboxylate (ACC) deaminase activity was shown by 6 isolates, ammonia production by 9 isolates, siderophore production by 8 isolates while HCN production by 4 isolates. Four bacterial isolates with all plant growth-promoting properties also showed strong antagonistic activities against Fusarium oxysporum, F. verticillioides, Curvularia lunata and Alternaria alternata and abiotic stress tolerance against salinity, temperature, pH and calcium salts. Two selected bacterial isolates significantly enhanced the growth of pea and maize test plants under greenhouse conditions. The bacterial isolate M1B2, which showed the highest growth promotion of test plants, was identified as Bacillus sp. based on phenotypic and 16S rDNA gene sequencing. The results indicated that Bacillus sp. M1B2 is a potential candidate for the development of microbial inoculants in stressful environments.
    Źródło:
    Journal of Plant Protection Research; 2018, 58, 2
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Postural Stability of Sitting Women
    Autorzy:
    Nag, P. K.
    Vyas, H.
    Nag, A.
    Pal, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/90231.pdf
    Data publikacji:
    2013
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    woman
    chair sitting
    postural stabilometry
    kobieta
    krzesło
    stabilność postawy
    Opis:
    The study examined the utility of stabilometric dimensions and explored whether the changes in sitting postures were manifested in functional measures of postural control. Eleven women participated in the study, which used 11 chair sitting postures: arms on laps or arms right angled; armrest at a height of 17, 20 and 23 cm; with or without backrest; slouch or straight back; legs right angled at knees or crossed legs. The backrest and armrest shifted 16.3% of body weight from a seat pan. The characteristics of stabilometric dimensions evaluated the influence of seat components and sitting behaviour on postural balance. The study attempted to evaluate stability and its application in human–seat interface design.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2013, 19, 4; 583-595
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investment Castings of Magnesium Alloys: A Road Map and Challenges
    Autorzy:
    Vyas, Akash V.
    Sutaria, M. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/11236771.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    magnesium alloys
    investment casting
    reactions melting
    liquid casting methods
    automotive parts
    aviation parts
    stopy magnezu
    odlewy inwestycyjne
    topnienie
    odlewanie płynne
    części samochodowe
    części lotnicze
    Opis:
    In the manufacturing sector, the processing of magnesium alloys through the liquid casting route is one of the promising methods to manufacture automotive and aircraft components, for their excellent mechanical properties at the lower weight. Investment casting process has the great cabaility to produce near net shape complex castings for automotive and aircraft applications. The distinct and attractive engineering properties of magnesium alloys have shown to be promising in terms of its potential to replace materials such as cast iron, steel, and aluminum In this regard, the efforts to develop processing technology for these alloys for their wide range of applications in industries have been reported by the scientific and engineering community. For successful production of magnesium alloy castings, it requires specialized foundry techniques because of the particular chemical and physical properties of magnesium; especially the reactive and oxidative nature of these alloys. The industry is young enough, to tap the potential.
    Źródło:
    Archives of Foundry Engineering; 2022, 22, 4; 19--23
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Disparity of a Seat Cushion and Its Influence on Postural Control
    Autorzy:
    Nag, P.K.
    Nag, A.
    Vyas, H.
    Shah, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/89723.pdf
    Data publikacji:
    2013
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    cushion
    foam
    cotton
    centre of pressure measurements
    postural control
    kontrola postawy ciała
    postawa ciała
    siedzenie
    kontrola równowagi
    Opis:
    Properties of supporting surfaces of a seat have an influence on postural control. Centre of pressure (COP) displacement parameters reflect both the balance controlling process and movements of the centre of a mass of entire body. The subjects of the study were 9 healthy men. A seat cushion was examined with a 2-force platform setup. Force exertion at a seat pan and feet and COP displacement at a seat pan were measured to analyse postural control. Analysis of variance determined the differences in postural control depending on a cushion type among the subjects. Significant differences in COP displacement parameters were in COP trajectory length, medio-lateral COP displacement and COP velocity. The results of the study showed that foam cushion ensures better postural control.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2013, 19, 4; 573-581
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Culturable endophytic Pseudomonas fluorescens Z1B4 isolated from Zanthoxylum alatum Roxb. with stress-tolerance and plant growth-promoting potential
    Autorzy:
    Vyas, P.
    Kaur, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2096416.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    antagonism
    endophytes
    fluorescent Pseudomonas
    phosphate solubilization
    medicinal plants
    Northeast India
    Opis:
    Endophytes are an important constituent of sustainable agriculture because of their ability to produce a large number of agriculturally important metabolites. A salt-tolerant fluorescent green pigment-producing endophytic bacterium was isolated on 2.5% NaCl-supplemented nutrient agar from the leaf samples of Zanthoxylum alatum Roxb. The isolate Z1B4 was identified as Pseudomonas fluorescens based on morphological features, fatty acid methyl ester analysis, biochemical tests, and 16S rRNA gene sequencing. P. fluorescens Z1B4 showed positive results for tricalcium phosphate solubilization; 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity; and production of auxins, siderophores, hydrogen cyanide, and ammonia. P. fluorescens Z1B4 also showed strong antagonistic activity against Curvularia lunata (MTCC 283), Fusarium verticillioides (MTCC 3322), and Alternaria alternata (MTCC 1362) and exhibited stress tolerance to a wide range of temperature and pH and concentrations of NaCl and calcium salts. Under natural conditions, following inoculation with the isolate Z1B4, a significant increase in the growth of pea and maize test plants in pots was observed compared to that of uninoculated control plants. The rifampicin-resistant mutant Z1B4Rif was recovered from the roots, shoots, and leaves of the test plants, indicating that the isolated endophytic bacterium can grow well within different plant tissues. The present study indicated that the endophytic bacterium P. fluorescens Z1B4 can be used as a bacterial inoculant in stressed environments for sustainable agriculture.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 3; 285-295
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biochemical constituents in leaf of Carica papaya - ethnomedicinal plant of Kachchh region
    Autorzy:
    Vyas, S.J.
    Khatri, T.T.
    Ram, V.R.
    Dave, P.N.
    Joshi, H.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/11094.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    biochemical constituent
    leaf
    fruit
    seed
    Carica papaya
    papaya
    medicinal plant
    ethnomedicine
    treatment
    Kachchh region
    India
    Opis:
    Carica papaya Linn. is one of the valuable plant used for various purposes in medicinal field. Leaves, fruit and seeds of the C. papaya are used as ethnomedicine. This work describes biochemical constituents of leaves of C. papaya. Fresh leaves samples of the plant were collected during the month of January, 2013 from different parts of Bhuj in Kachchh district (Gujarat), India. The purpose of the study was to evaluate the biochemical composition in leaves of C. papaya growing in the semi-arid region of Gujarat and based on the result to justify its importance in various treatments of diseases. The dried leaves were further analyzed for biochemical constituents like Ca2+, Mg2+, Na+, K+, Clˉ and Li+. The results indicated that the leaf extract of C. papaya has high potentiality for curing number of diseases.
    Źródło:
    International Letters of Natural Sciences; 2014, 07
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Antibacterial activity of extracts of leaves of Nerium indicum in combination with antibiotics
    Autorzy:
    Vyas, P.
    Suthar, A.
    Joshi, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/11723.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Opis:
    Methanol and ethanol extract showed antibacterial activity in range of 0-11 at 10 mg/mL at against all tested bacterial species. Methanol extract with amoxicillin exhibited effective inhibition E. coli. This combination showed antagonistic effect against B. subtilis and S. aureus. Interaction of ethanol extract with amoxicillin also showed effective inhibition against E. coli and decreased activity against B. subtilis and S. aureus. Methanol extract did not show inhibition against P. aeruginosa but it enhanced activity of ciprofloxacin on combination. Ethanol extract also exhibited effective inhibition against P. aeruginosa on combination with ciprofloxacin. But antagonist effect was observed on interaction of both extract with ciprofloxacin against other bacterial species. Interaction of methanol and ceftazidime showed mostly decreased or indifferent effect against all bacterial species. Ethanol extract with ceftazidime resulted in higher inhibition against E. coli. Combination of methanol extract with erythromycin showed higher inhibition against E. coli and also very effective inhibition against S. aureus. This combination resulted in decreased activity against B. subtilis. Ethanol extract with erythromycin also showed synergistic effect against S. aureus and effective inhibition against E. coli. These results indicate that both methanol and ethanol extract has potential to enhance the combination effect with erythromycin against S. aureus and E. coli.
    Źródło:
    International Letters of Natural Sciences; 2015, 46
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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