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Wyświetlanie 16-30 z 46
Tytuł:
Foliar treatment with proline and tyrosine affect the growth and yield of beetroot and some pigments in beetroot leaves
Autorzy:
El-Sherbeny, M.R.
Teixeira da Silva, J.A.
Powiązania:
https://bibliotekanauki.pl/articles/2059.pdf
Data publikacji:
2013
Wydawca:
Instytut Ogrodnictwa
Tematy:
Beta vulgaris
red beet
pigment content
chlorophyll
carotenoid
proline
tyrosine
carbohydrate content
foliar treatment
vegetative growth
yield
Źródło:
Journal of Horticultural Research; 2013, 21, 2
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Size optimization of rectangular cross-section members subject to fatigue constraints
Autorzy:
González Mendoza, J. M.
Alcántara Montes, S.
Silva Lomelí, J. J.
Flores Campos, J. A.
Powiązania:
https://bibliotekanauki.pl/articles/949129.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
size optimization
multiaxial fatigue
non-proportional
Opis:
Although in the scientific literature there are studies regarding optimization of structural members subject to static loads or even cyclic in-phase loads, the optimization of structures subject to cyclic, out-of-phase multiaxial loads is still an unexplored issue. In this paper, we present an approach to the problem of size optimization of rectangular cross-section members subject to multiaxial in-phase and out-of-phase cyclic loads. The objective of the optimization is to minimize the cross sectional area of such elements while retaining their fatigue endurance. Under the proposed methodology, optimum values of the area are achieved for six loading cases and for three values of the height to width ratio of the cross section, and these values are reported. The novelty of the approach lies in the inclusion of two multiaxial high cycle fatigue criteria, i.e., Dang Van and Vu-Halm-Nadot ones, as constraints for size optimization problems, fully integrated within an in-house developed tool, capable of handling non-proportional stresses. A plot of the feasible solution space for this optimization problem is also obtained.
Źródło:
Journal of Theoretical and Applied Mechanics; 2017, 55, 2; 547-557
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First record of mites associated with lima bean (Phaseolus lunatus L.)
Autorzy:
Neto, A.V.G.
Silva, P.R.R.
Silva, J.D.C.
Dos Santos, M.F.
Da Silva Melo, J.W.
De Franca, S.M.
Powiązania:
https://bibliotekanauki.pl/articles/2084632.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Tetranychidae
pest mites
legumes
Opis:
Pest mites of the family Tetranychidae are commonly reported in several legumes. However, reports of their occurrence in lima beans are insipient, especially in Brazil. The objective of this research was to record the occurrence of mites in lima bean plants and to describe their damage in this Fabaceae. Tetranychus neocaledonicus André and Mononychellus planki McGregor were found in lima bean plants, Phaseolus lunatus (Fabaceae or Leguminosae). The lima bean plants, when infested by these mites, initially exhibit small whitish spots in the leaflets, which with increasing population density rapidly evolve into chlorotic patches, followed by silvering, and may dry out and fall due to their overfeeding. The extent of the damage caused to lima bean plants and the adaptability of the mite to warm and dry conditions indicate that T. neocaledonicus has greater potential as a lima bean pest than M. planki in northeastern Brazil. This is the first record of these mites associated with P. lunatus.
Źródło:
Journal of Plant Protection Research; 2019, 59, 3; 418-422
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Simple Localized-Itinerant Model for PrAl$\text{}_{3}$: Crystal Field and Exchange Effects
Autorzy:
Von Ranke, P. J.
Palermo, L.
Da Silva, X. A.
Powiązania:
https://bibliotekanauki.pl/articles/1891680.pdf
Data publikacji:
1991-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.10.Dg
75.30.Cr
Opis:
We present a simple magnetic model for PrAl$\text{}_{3}$. The effects of crystal field are treated using a reduced set of levels and the corresponding wave functions are extracted from the actual crystal field levels of Pr$\text{}^{+3}$ in a hexagonal symmetry. The exchange between 4f- and conduction-electrons are dealt within a molecular field approximation. An analytical magnetic state equation is derived and the magnetic behaviour discussed. The parameters of the model are estimated from a fitting of the inverse susceptibility of PrAl$\text{}_{3}$ given in the literature.
Źródło:
Acta Physica Polonica A; 1991, 80, 4; 583-590
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rapid callogenesis and plant regeneration of fine and coarse varieties of rice
Autorzy:
Khokhar, M.I.
Iqbal, M.Z.
Teixeira da Silva, J.A.
Powiązania:
https://bibliotekanauki.pl/articles/80293.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
rice
coarse structure
fine structure
plant regeneration
callogenesis
6-benzyladenine
callus induction
root formation
kinetin
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2017, 98, 4
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prevalence and major causes of ruminal lesions in intensive cattle fattening units
Autorzy:
Vieira, J.
Matos, R.
Cannas da Silva, J.
Baumgartner, W.
Van Harten, S.
Dâmaso, A.
Powiązania:
https://bibliotekanauki.pl/articles/16647393.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
ruminal lesions
ruminal acidosis
cattle
feedlot
management
Opis:
Ruminal acidosis is frequent in cattle fattening systems associated with grain-rich fibre-poor diets. This study aimed to assess the prevalence of ruminal lesions compatible with ruminal acidosis intensive fattening farms and its risk factors on farm. Rumens of 218 out of 1960 bullocks from six farms were classified in slaughterhouses, and the management practices and the type of feed were compared. The prevalence of lesions compatible with ruminal acidosis was high (65%), where 47% and 18% of the animals had ruminal lesions compatible with subacute and acute disease, respectively. Prevalence of lesions differed significantly between the farms, with differences in the management and feeding practices. Ruminal lesions compatible with ruminal acidosis are prevalent in cattle fattening units in Portugal and husbandry and feeding practices are likely to have an impact.
Źródło:
Polish Journal of Veterinary Sciences; 2022, 25, 4; 635-637
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of inorganic salts concentration and alternative plant growth regulators on the in vitro organogenesis of a new hybrid Cymbidium
Autorzy:
Lukatkin, A.S.
Mokshin, E.V.
Bolshakova, E.V.
Da Silva, J.A.T.
Powiązania:
https://bibliotekanauki.pl/articles/80337.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
inorganic salt
Cymbidium
hybrid
in vitro
organogenesis
benzyladenine
plant growth regulator
kinetin
thidiazuron
6-benzyladenine
indole-3-acetic acid
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2019, 100, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of isometric strength of the shoulder rotators in swimmers using a handheld dynamometer : a reliability study
Autorzy:
Coinceicao, A.
Parraca, J.
Marinho, D.
Costa, M.
Louro, H.
Silva, A.
Batalha, N.
Powiązania:
https://bibliotekanauki.pl/articles/306193.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
siłomierz
pływanie
młodzi pływacy
handheld dynamometer
prone position
young swimmers
swimming
Opis:
The purpose of this study was to determine the reliability of shoulder isometric strength assessment using the microfet 2™ dynamometer in adolescent swimmers. Methods: Twenty-nine participants (16.2 ± 1.2 years old; 59.05 ± 6.98 kg of body mass) were tested using the microfet 2™ dynamometer. Swimmers performed an isometric strength test (IST) in two distinct occasions with 7 days apart in order to calculate the reliability. All participants were asked to perform a maximal isometric contraction from the external and internal shoulder rotators in a prone body position. Results: The external and internal shoulder rotators showed an excellent intraclass correlation coefficients for both shoulders, with more than 0.90 and a low percentage of method error variation. The external/internal ratios reliability was good in dominant (ICC 0.80) and non-dominant (ICC 0.81) shoulders. The reliability using Bland–Altman method showed that systematic errors (mean difference between test-retest) were nearly zero and the 95% limits of agreement narrow, indicating a good reliability. Conclusions: It can be concluded that microfet 2™ is a reliable apparatus for measuring the strength of the external and internal rotation of the shoulder in swimmers. Its light weight and easy portable characteristics can help swimming coaches monitoring specific dry-land strength training programs for their swimmers.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 4; 113-119
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selectivity of diphenyl-ether herbicide with postemergence applications in chickpea
Autorzy:
Silva, L.G.B.
Da Silva Araujo, L.
Goncalves, D.J.
Souza Valente, M.
Da Silva, A.R.
Nascimento, W.M.
Ribeiro da Cunha, P.C.
Powiązania:
https://bibliotekanauki.pl/articles/2084719.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Cicer arietinum
diphenyl-ether herbicides
weeds
Opis:
There are few reports in literature about the selectivity of postemergence application of herbicides for the control of eudicotyledon weeds (broadleaf) in chickpea. For this reason, the aim of this study was to investigate the selectivity of diphenyl-ether herbicides in chickpea influenced by the herbicides and application rates. A field experiment was conducted from February to June 2017 in Urutaí, state of Goiás, Brazil. Cultivar BRS Aleppo was used in the experiment. The experiment was set up in a randomized block design with 2 × 3 + 1 factorial arrangement and three replications. The first factor was herbicides (fomesafen and lactofen) with the second factor being herbicide rate (50, 75, and 100% of referenced rate) plus an untreated check as a comparison. The applied rates of herbicides were 250 and 180 g ⋅ ha–1 of fomesafen and lactofen, respectively. The selectivity of herbicides was evaluated according to agronomic characteristics (plant population, height, dry matter, number of pods per plant and 100-grain weight) and yields. Both herbicides, regardless of dosage, were selective in chickpea cultivation, even exhibiting leaf necrosis symptoms with visible injuries below 20% with no effect on yield.
Źródło:
Journal of Plant Protection Research; 2019, 59, 3; 350-354
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Withania coagulans (Stocks) Dunal: biotechnological achievements and perspectives
Autorzy:
Teixera da Silva, J.A.
Kher, M.M.
Soner, D.
Nataraj, M.
Powiązania:
https://bibliotekanauki.pl/articles/1928.pdf
Data publikacji:
2015
Wydawca:
Instytut Ogrodnictwa
Tematy:
Withania coagulans
medicinal plant
Solanaceae
shoot regeneration
rooting
in vitro
micropropagation
tissue culture
random amplified polymorphic DNA
Źródło:
Journal of Horticultural Research; 2015, 23, 1
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new report on Hesperomyces coleomegillae (Ascomycota, Laboulbeniales) parasitism of Coleomegilla maculata (Coleoptera, Coccinellidae) in Brazil
Autorzy:
Inacio, C.A.
de Paulo, H.H.
Almeida, J.D.
Rembinski, J.
Menezes, E.L.A.
Silva, A.C.
Powiązania:
https://bibliotekanauki.pl/articles/2196347.pdf
Data publikacji:
2019-04-18
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Hesperomyces
Ascomycota
Laboulbeniales
Coleomegilla maculata
Coleoptera
Coccinellidae
parasitism
host-parasite interaction
tropical fungi
Brazil
Opis:
For the first time, the genus Hesperomyces has been reported to infect Coleomegilla maculata in laboratory mass rearing in Brazil. Thalli were found growing on several parts of this ladybird species, including the head, elytra, legs, and abdomen. Infested adults died after 60 days.
Źródło:
Acta Mycologica; 2019, 54, 1; 1117
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First detection and molecular characterization of hepatitis E virus in water from wastewater treatment plants in Portugal
Autorzy:
Matos, A.
Mesquito, J.R.
Goncalves, D.
Abreu-Silva, J.
Luxo, C.
Nascimento, M.S.
Powiązania:
https://bibliotekanauki.pl/articles/2081721.pdf
Data publikacji:
2018
Wydawca:
Instytut Medycyny Wsi
Tematy:
wastewater
hepatitis E virus
genotype 3
zoonotic
Opis:
Hepatitis E virus (HEV) genotype 3 is widespread in industrialized countries and widely recognized as a serious public health issue. HEV genotype 3 is excreted in both human and animal stools, having the potential to be introduced in aquatic environments through wastewater discharge. For this reason, waterborne transmission of the HEV genotype 3 is drawing increasing attention from the scientific community. Although studies in Portugal have shown that HEV circulates in both humans and swine, no study has yet focused on the presence of HEV in wastewater. Hence, a total of 60 water samples (influent and effluent) from 15 Wastewater Treatment Plants (WWTP) of different regions of Portugal were tested for the presence of HEV using a broad spectrum real-time RT-PCR with amplification within the ORF2 region of HEV genome. Positive samples were retested by nested RT-PCR with amplification within the ORF1 region, sequenced followed by phylogenetic analysis. HEV sequences were retrieved from two influent samples collected in December 2013 from WWTPs of North and Central of Portugal and classified in subgenotype 3i and 3f. This is the first study showing the presence of HEV in aquatic environments of Portugal.
Źródło:
Annals of Agricultural and Environmental Medicine; 2018, 25, 2; 364-367
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of acute low back pain in women after treatment with interferential current
Autorzy:
Serafim, A.
Rabel, J.
Neves, M.
Da Silva, T.S.
Bertolini, G.R.F.
Powiązania:
https://bibliotekanauki.pl/articles/3294.pdf
Data publikacji:
2019
Wydawca:
Instytut Medycyny Wsi
Źródło:
Journal of Pre-Clinical and Clinical Research; 2019, 13, 2
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Phase Transitions in BNT-BT Lead-Free Ceramics Around Morphotropic Phase Boundary by Mechanical and Dielectric Spectroscopies
Autorzy:
Silva Jr, P. S.
Diaz, J. C. C. A.
Florêncio, O.
Venet, M.
M’Peko, J. C.
Powiązania:
https://bibliotekanauki.pl/articles/353072.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Lead-free piezoelectric ceramics
morphotropic phase boundary
phase transitions
mechanical spectroscopy
dielectric spectroscopy
Opis:
In this work, the syntheses and characterization by mechanical and dielectric spectroscopies of (1-x) Bi0.5Na0.5TiO3-xBaTiO3 (BNT-100xBT), with x = 0.05, 0.06 and 0.07, lead-free piezoelectric ceramics is reported. Ceramic samples of BNT-BT have been prepared by mixed-oxide method and then conventionally sintered. X-ray diffraction patterns of sintered samples, indicated for BNT-7BT the presence of tetragonal (P4mm) complex perovskite structure, whereas for BNT-5BT and BNT-6BT the samples exhibit a mixture of tetragonal (P4mm) and rhombohedral (R3c) crystalline phases, which reveal the presence of a morphotropic phase boundary (MPB) in the BNT-BT system. Measurements of internal friction, Q-1, and the storage modulus, E’, as a function of temperature at various frequencies were carried out in a Dynamic Mechanical Analyzer (DMA), in the temperature range from 0ºC to 600ºC. Dielectric profiles are recorded in the frequency range from 1kHz to 100kHz and the temperature range from room temperature to 475ºC. Mechanical loss spectra obtained for investigated compositions of BNT-BT samples showed different frequency-independent anomalies. Two main anomalies for BNT-5BT and BNT-6BT, observed around 100ºC and 430ºC were associated with the ferroelectric-antiferroelectric and antiferroelectricparaelectric phase transitions, respectively. The results obtained from mechanical loss measurements were supported by dielectric relaxation spectra. For BNT-7BT, outside the MPB, four different frequency-independent processes were observed.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 1; 17-20
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 16-30 z 46

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