Autor: Silva, A. J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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

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Skocz do pozycji: 2.

Tytuł:: Serological and molecular evidence of hepadnavirus infection in swine
Autorzy:: Vieira, Y.R.
Silva, M.F.M.
Santos, D.R.L.
Vieira, A.A.
Ciacci-Zanella, J.R.
Barquero, G.
do Lago, B.V.
Gomes, S.A.
Pinto, M.A.
de Paula, V.S.
Powiązania:: https://bibliotekanauki.pl/articles/989989.pdf
Data publikacji:: 2015
Wydawca:: Instytut Medycyny Wsi
Tematy:: diagnostic
hepadnavirus
swine
Opis:: Introduction and objective. Recently, investigations in a swine herd identified evidence of the existence of a novel member of the Hepadnavirus family endemic in swine. The aim of this study was to investigate the serological and molecular markers of Hepadnavirus circulation in Brazilian domestic swine and wild boar herds, and to evaluate the identity with HBV and other Hepadnaviruses reported previously. Materials and methods. For the study, 376 swine were screened for hepatitis B virus serological markers. Analyses were performed in serum samples using commercial enzyme-linked immunosorbent assay (ELISA) kits (DiaSorin®) for anti-HBc, HBsAg and anti-HBs. Reactive and undetermined swine serum samples were selected to perform DNA viral extraction (QIAamp DNA Mini Kit, Qiagen®), partial genome amplification and genome sequencing. Results. From 376 swine samples analysed, 28 (7.45%) were reactive to anti-HBc, 3 (0.80%) to HBsAg and 6 (1.6%) to anti-HBs. Besides, more 17 (4.52%) swine samples analyzed were classified in the grey zone of the EIA test to anti-HBc and 2 (0.53%) to HBsAg. From 49 samples molecularly analyzed after serological trial, 4 samples showed a positive result for the qualitative PCR for Hepadnavirus. Phylogenetic reconstruction using partial genome sequencing (360 bp) of 3 samples showed similarity with HBV with 90.8–96.3% of identity. Conclusions. Serological and molecular data showed evidence of the circulation of a virus similar to hepatitis B virus in swine.
Źródło:: Annals of Agricultural and Environmental Medicine; 2015, 22, 1
1232-1966
Pojawia się w:: Annals of Agricultural and Environmental Medicine
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

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

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Skocz do pozycji: 4.

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

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Skocz do pozycji: 5.

Tytuł:: A review of the in vitro propagation of Bauhinia spp.
Autorzy:: Teixeira da Silva, J.A.
Powiązania:: https://bibliotekanauki.pl/articles/2075.pdf
Data publikacji:: 2013
Wydawca:: Instytut Ogrodnictwa
Tematy:: Bauhinia acuminata
Bauhinia variegata
Bauhinia purpurea
Bauhinia monandra
Bauhinia galpinii
Bauhinia blakeana
ornamental plant
liana
in vitro propagation
medicinal property
biological property
future perspective
Źródło:: Journal of Horticultural Research; 2013, 21, 1
2300-5009
Pojawia się w:: Journal of Horticultural Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: How do rare earth elements (lanthanoids) affect root development and protocorm-like body formation in hybrid Cymbidium?
Autorzy:: Teixeira da Silva, J.A.
Powiązania:: https://bibliotekanauki.pl/articles/2174.pdf
Data publikacji:: 2014
Wydawca:: Instytut Ogrodnictwa
Tematy:: lanthanide
root development
orchid
protocorm-like body
rare earth element
root formation
plant growth regulator
Cymbidium
Źródło:: Journal of Horticultural Research; 2014, 22, 1
2300-5009
Pojawia się w:: Journal of Horticultural Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Attachment of 2,2-bipyridine onto a silica gel for application as a sequestering agent for copper, cadmium and lead ions from an aqueous medium
Autorzy:: Souza, E. J.
Cristante, V. M.
Padilha, P. M.
Jorge, S. M. A.
Martines, M. A. U.
Silva, R. I. V.
Carmo, D. R.
Castro, G. R.
Powiązania:: https://bibliotekanauki.pl/articles/779827.pdf
Data publikacji:: 2011
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: 2,2-bipirydyna
żel krzemionkowy
adsorpcja
jony metali
2,2'-bipyridine
silica gel
adsorption
metal ions
Opis:: A method was developed to attach 2,2-bipyridine (BP) onto a silica gel surface by a two-step reaction. The fi rst step consisted of a reaction between the matrix and a silylating agent, 3-chloropropyltrimethoxysilane. In the second step of the reaction, a ligand molecule was attached onto Si-CPTS, yielding the product Si-BP. The modified material contained 0.431±0.01 mmol of 2,2-bipyridine per gram of modified silica, as confirmed by FT-IR spectra of the proposed structure. The surface modification was characterized by the BET technique, which revealed a decrease in the surface area from 614 to 450 m2 g-1. The series of adsorption isotherms for the metal ions were adjusted to fit a modified Langmuir equation. The maximum number of moles of copper, cadmium and lead ions adsorbed was 0.64, 0.53, and 0.54 mmol g-1, respectively. The surface saturation was calculated as ¢ fraction and the values obtained, Cu(II) =1.160, Cd(II) = 1.044 and Pb(II) = 0.997, suggest a type 1:1 metal-ligand complex.
Źródło:: Polish Journal of Chemical Technology; 2011, 13, 4; 28-33
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

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

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Skocz do pozycji: 9.

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) Bi_0.5Na_0.5TiO_3-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

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Skocz do pozycji: 10.

Tytuł:: Glyphosate in agronomic performance and seed quality of soybean with cp4-EPSPs and cry1Ac genes
Autorzy:: Silva, A.F.M.
Albrecht, A.J.P.
Albrecht, L.P.
Pellicci, V.A.
Giovanelli, B.F.
Ghirardello, G.A.
Viana, H.R.M.
Filho, R.V.
Powiązania:: https://bibliotekanauki.pl/articles/66021.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: crop injury
Glycine max
soybean
glyphosate-tolerant soybean
herbicide
selectivity
agronomic performance
seed quality
cp4-EPSPs gene
cry1Ac gene
Opis:: The “second generation” of glyphosate-tolerant soybean (GT2 soybean) was developed through a different technique of insertion of the glyphosate-insensitive EPSPs gene, in comparison with “first generation” of glyphosate-tolerant soybean. However, there is not enough information available about glyphosate selectivity in GT2 soybean and the effects on the quality of seeds produced. The aim of this study was to evaluate tolerance to glyphosate and seed quality of soybean cultivar NS 6700 IPRO (GT2) with cp4-EPSPs and cry1Ac genes, after application at post-emergence (V4). The experiment was conducted in a randomized block design with four replicates and seven treatments, or rates of glyphosate (0; 720; 1,440; 2,160; 2,880; 3,600; 4,320 g of acid equivalent − a.e. · ha−1). Assessments were performed for crop injury, SPAD index and variables related to agronomic performance and seed quality. A complementary trial with the same cultivar and treatments in a greenhouse was conducted in a completely randomized design with four replications. Data analysis indicated no significant effect of glyphosate on V4 on agronomic performance and physiological quality of seeds, for two growing seasons. The soybean cultivar NS 6700 IPRO (GT2), with cp4-EPSPs and cry1Ac genes, was tolerant to glyphosate up to the maximum rate applied (4,320 g a.e. · ha−1) at post-emergence (V4). The quality of soybean seeds was not affected by glyphosate up to the maximum rate applied (4,320 g a.e. · ha−1) at post-emergence (V4).
Źródło:: Journal of Plant Protection Research; 2018, 58, 4
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Selectivity of nicosulfuron isolated or in tank mixture to glyphosate and sulfonylurea tolerant soybean
Autorzy:: Silva, A.F.M.
Albrecht, A.J.P.
Damiao, V.W.
Giraldeli, A.L.
de Marco, L.R.
Placido, H.F.
Albrecht, L.P.
Filho, R.V.
Powiązania:: https://bibliotekanauki.pl/articles/66430.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: selectivity
nicosulfuron
tank mixture
glyphosate
sulphonylurea
soybean
Glycine max
chlorimuron
cloransulam
herbicide
crop
tolerance
sulphometuron
Opis:: The aim of the present work was to evaluate the selectivity of nicosulfuron, alone and in combinations, applied in post-emergence (V4) of glyphosate and sulfonylurea tolerant (RR/STS) soybean. The experiments were conducted in 2015/16 and 2016/17, in Piracicaba – state of São Paulo (SP). In 2016/17, the experiment was also conducted in Palotina – state of Paraná (PR). The experiment was a randomized block design, with four repetitions and 16 treatments, with combinations of nicosulfuron, glyphosate, chlorimuron, sulfometuron and cloransulam, applied alone or in tank mixture. Crop injury and variables related to agronomic performance were evaluated. Data were subjected to analysis of variance and treatment means were compared by the Tukey test. The results obtained are significant in the positioning of herbicides in RR/STS soybean, since in the five experiments, all the treatments were selective, except for glyphosate + sulfometuron which reduced the yield of a cultivar (CD 2630 RR/STS) in the 2015/16 season.
Źródło:: Journal of Plant Protection Research; 2018, 58, 2
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

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

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Skocz do pozycji: 13.

Tytuł:: First Record of Testate Amoebae on Glaciers and Description of a New Species Puytoracia jenswendti nov. sp. (Rhizaria, Euglyphida)
Autorzy:: Santibáñez, Pamela A.
Kohshima, Shiro
Scheihing, Rodrigo A.
Silva, Ricardo
Jaramillo M, Jorge I.
Labarca P, Pedro J.
Casassa R., Gino
Powiązania:: https://bibliotekanauki.pl/articles/763674.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:: Glacier, Firn core, Testate amoebae, Trinematidae, Trinema, Puytoracia
Opis:: This study documents for the first time the presence of testate amoebae on glaciers. Three shallow firn cores of 10 m depth were obtained from the Mocho-Choshuenco and Osorno volcanoes, Southern Andes, Chile, in October and November, 2005. Euglyphid testate amoebae were detected in 28 samples that correspond to the spring-summer layers of the firn cores. Inspection of 454 collected individuals reveals the presence of four different taxa. Three of these taxa, Trinema lineare, Trinema enchelys and Puytoracia bergeri have previously been reported in ice-free environments. The fourth taxon corresponds to a new species Puytoracia jenswendti nov. sp. The observation of food content and reproductive activities in a significant fraction of specimens evidence that testate amoebae are competent to inhabit glaciers. The testate amoebae found in the firn cores display clear seasonal variations in abundance indicating that these records can provide a new and novel proxy as paleoindicator for firn/ice core dating and for estimation of past glacier mass balance.
Źródło:: Acta Protozoologica; 2011, 50, 1
1689-0027
Pojawia się w:: Acta Protozoologica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Effect of position of fruits in a tree and number of fruits per panicle on growth and quality of citrus
Autorzy:: Sakhidin, -
Teixeira de Silva, J.A.
Suparto, S.R.
Powiązania:: https://bibliotekanauki.pl/articles/1076701.pdf
Data publikacji:: 2018
Wydawca:: Instytut Ogrodnictwa
Tematy:: citrus
citrus fruit
citrus orchard
central Java
Indonesia
fruit diameter
fruit weight
fruit pulp
sugar content
vitamin C
Opis:: This research aimed to study the effect of the position of fruits in a tree (inner or outer) and the number of fruits per panicle (one, two or three) on the growth and quality of citrus ‘Pontianak’. The study was conducted in a citrus orchard in Central Java, Indonesia for two seasons, 2014/2015 and 2015/2016. The results indicated that position of fruits on the tree did not influence weight and diameter of fruits, weight of fruit pulp, and contents of sugars and total acids. Increasing the number of fruits per panicle decreased the weight and diameter of fruits and the weight of pulp but increased the contents of vitamin C and total acids.
Źródło:: Journal of Horticultural Research; 2018, 26, 1
2300-5009
Pojawia się w:: Journal of Horticultural Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Development and production of radioactive sources used for cancer treatment in Brazil
Autorzy:: Rostelato, M. E. C. M.
Rela, P. R.
Zeituni, C. A.
Feher, A.
Manzoli, J. E.
Moura, J. A.
Moura, E. S.
Silva, C. P. G.
Powiązania:: https://bibliotekanauki.pl/articles/148305.pdf
Data publikacji:: 2008
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: radioactive sources production
iodine-125 seeds
iridium-192 wires
brachytherapy
cancer treatment
Opis:: The number of cancer patients in Brazil is increasing and part of the patients are submitted to brachytherapy treatment using iridium-192 wire and iodine-125 radioactive seeds. The Nuclear Energy Research Institute established a programme to produce iridium-192 wire and iodine-125 radioactive seeds. With the purpose of settling a laboratory for iridium-192 sources production, a wire activation method was developed and a hot cell for the wire manipulation, quality assurance and packaging was built. The iodine-125 seeds consist of a welded titanium capsule containing iodine-125 adsorbed onto a silver rod. Concerning the setup of the local production, the following activities were carried out: superficial treatment of the silver rod, development of a process to absorb the iodine in the silver rod, welding methodology to seal the seeds, leakage and contamination test and source activity measurement.
Źródło:: Nukleonika; 2008, 53, suppl. 2; 99-103
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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