Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 8

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Incidence of fungals in a vineyard of the denomination of origin ribeiro [Ourense - North-Western Spain]

100%
Fernandez-Gonzales M., Rodriguez-Rajo F. J., Jato V., Aira M. J.
Annals of Agricultural and Environmental Medicine
|
2009
|
tom 16
|
nr 2
263-271
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Factors involved in the phenological mechanism of Alnus flowering in Central Europe

100%
Rodriguez-Rajo F. J., Grewling L., Stach A., Smith M.
Annals of Agricultural and Environmental Medicine
|
2009
|
tom 16
|
nr 2
277-284
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Prediction of biological sensors appearance with ARIMA models as a tool for Integrated Pest Management protocols

100%
Fernandez-Gonzalez M., Ramos-Valcarcel D., Aira M. J., Rodriguez-Rajo F. J.
Annals of Agricultural and Environmental Medicine
|
2016
|
tom 23
|
nr 1
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Environmental factors affecting the start of pollen season and concentrations of airborne Alnus pollen in two localities of Galicia [NW Spain]

100%
Rodriguez-Rajo F. J., Dopazo A., Jato V.
Annals of Agricultural and Environmental Medicine
|
2004
|
tom 11
|
nr 1
Alnus pollen is an early component of the annual atmospheric aerosol of the north-west regions of Spain, which causes the first occurrence of allergic symptoms. Seasonal and intra-daily variation of Alnus pollination, and the influence that main meteorological parameters exert, was studied in this paper. Monitoring was carried out from 1993-2002, by using two Lanzoni VPPS 2000 volumetric samplers. Once the atmospheric behaviour of this pollen had been identified, the final objective was to elaborate predictive models to determine the onset of the Alnus pollen season and its concentrations during the pollination period in two localities of north-west Spain (Santiago and Ourense). Winter chilling required to overcome the bud-dormancy period was similar in both cities, with around 800 Chilling Hours (C.H.) and 5.5oC threshold temperature. Calculation of heat requirement for bud growth was carried out with maximum temperature, with around 50 Growth Degree Days (G.D.D.oC) needed, with 6oC threshold temperature. Data from 2002 were used in order to determine the real validity of the models. This year was not taken into account to establish the aforementioned models. The variation between the predicted start of the pollen season and the observed season was smallest in Ourense. Verifying the proposed models for predicting daily mean concentrations of Alnus pollen during the pollen season shows that the predicted curves fits the observed variations of daily mean concentrations.
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Use of phenological and pollen-production data for interpreting atmospheric birch pollen curves

100%
Jato V., Rodriguez-Rajo F. J., Aira M. J.
Annals of Agricultural and Environmental Medicine
|
2007
|
tom 14
|
nr 2
Although aerobiological data are frequently used as a fl owering sign in phenological research, airborne pollen counts are infl uenced by a number of factors affecting pollen curves. A study was made about the reproductive biology of birch and environmental factors infl uencing its pollen release and transport, in order to achieve a reliable interpretation of Betula pollen curves. Aerobiological data were recorded in 2002 and 2003 at two sites in NW Spain and phenological observations were carried out on 20 trees from four Betula populations (three Betula alba L. and one B. pendula Roth.). Pollen production was calculated for six Betula alba trees. Chilling and heat requirements for triggering development were calculated. Due to differences in the geographical location, budbreak and fl owering started fi rst in Betula pendula. The fl owering period lasted from 8-13 days. Reduced pollen output per anther and catkin in individual trees in 2003 prompted a marked decline in overall pollen production. Major differences observed in birch pollen curves were attributed to the infl uence both of weather conditions and pollen transport from areas where the fl owering occurs at a different time. Heat requirements calculated using phenological and aerobiological data were similar when the peak pollen- count date was used.
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Thirty-four identifiable airborne fungal spores in Havana, Cuba

88%
Almaguer M., Aira M.-J., Rodriguez-Rajo F. J., Fernandez-Gonzalez M., Rojas-Flores T. I.
Annals of Agricultural and Environmental Medicine
|
2015
|
tom 22
|
nr 2
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Forecasting ARIMA models for atmospheric vineyard pathogens in Galicia and Northern Portugal: Botrytis cinerea spores

76%
Fernandez-Gonzalez M., Rodriguez-Rajo F. J., Jato V., Aira M. J., Ribeiro H., Oliveira M., Abreu I.
Annals of Agricultural and Environmental Medicine
|
2012
|
tom 19
|
nr 2
Botrytis cinerea is the cause of the most common disease in the Galician and Portuguese vineyards. Knowledge of the spore levels in the atmosphere of vineyards is a tool for forecasting models of the concentration of spores in order to adjust the phytosanitary treatments to real risk infection periods. The presented study was conducted in two vineyards, one located in Cenlle (Spain) and other in Amares (Portugal), from 2005-2007. A volumetric trap, model Lanzoni VPPS-2000, was used for the aerobiological study. Phenological observations were conducted on 20 vines of three grape varieties in Cenlle (Treixadura, Godello and Loureira) and in Amares (Trajadura, Loureiro and Pedernã), by using the BBCH scale. The highest total spore concentrations during the grapevine cycle were recorded in 2007 in both locations (Cenlle:16,145 spores; Amares:1,858 spores), and the lowest, in 2005 in Cenlle (1,700 spores) and in Amares (800 spores) in 2006. In Cenlle, the best adjusted model was an ARIMA (0,2,2), including the relative humidity four days earlier, while in Amares there was an ARIMA (1,2,3), considering the relative humidity three days earlier and rainfall two days earlier. The t-test showed no significant difference between observed and predicted data by the model.
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Prediction of airborne Alnus pollen concentration by using ARIMA models

76%
Rodriguez-Rajo F. J., Valencia-Barrera R. M., Vega-Maray A. M., Suarez F. J., Fernandez-Gonzales D., Jato V.
Annals of Agricultural and Environmental Medicine
|
2006
|
tom 13
|
nr 1
To take preventative measures to protect allergic people from the severity of the pollen season, one of aerobiology’s objectives is to develop statistical models enabling the short- and long-term prediction of atmospheric pollen concentrations. During recent years some attempts have been made to apply Time Series analysis, frequently used in biomedical studies and atmospheric contamination to pollen series. The aim of this study is to understand the behaviour of atmospheric alder pollen concentrations in northwest Spain in order to develop predictive models of pollen concentrations by using Time Series analysis. The prediction line proposed for Oviedo and Ponferrada are similar (Arima 2,0,1) while in Vigo a more accurate model founded by Arima (3,0,1) and in León (1,0,1) was used. The results suggest that Ponferrada and Oviedo are the cities in northwest Spain where Alnus pollen allergic individuals should to take preventive measures to protect themselves from the severity of the pollen season. Alnus pollen values higher than 30 grains/m3, a quantity considered sufficient to trigger severe allergy symptoms of other trees of the Betulaceae family, could be reached during 25 days in some years. The predicted lines conformed with the observed values overall in the case of León and Ponferrada. Time Series regression models are especially suitable in allergology for evaluating short-term effects of time-varying pollen appearance in the atmosphere.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.