115 research outputs found
Introduction
No full textAnna De Ambrosis Vigna – PhD. LL.M, assistant professor at the Department of Administrative Law at the Faculty of Law, University of Bialystok; graduate of the Michigan State University College of Law; author of publications on administrative law, comparative law, higher education law.Dariusz R. Kijowski – professor, Chief of the Department of Administrative of Law at the Faculty of Law, University of Białystok; President of the Self-government Appeal Board in Białystok; member of the Legislative Council at the Prime Minister Office.2327
Measuring the hydrogen Balmer series and Rydberg’s constant with a homemade spectrophotometer
No full textIn a recent paper (Amrani 2014 Eur. J. Phys. 35 045001), the author presented two different methods to measure the wavelength of visible lines of Balmer series from the hydrogen atomic spectrum and estimate the value of Rydberg’s constant with an error difference of a few tenths of a per cent. Here we discuss how low cost spectrometers, based on the use of either transmission or reflection diffraction gratings coupled with a commercial digital camera, can be employed with the same aim. The Rydberg’s constant values obtained with our pectrometers are R = 1.096 ± 0.007 × 107 m−1 for the transmission grating spectrometer and R = 1.094 ± 0.005 × 107 m−1 for the reflection spectrometer, with a difference of less than 0.30% from the accepted value of 1.097 373 × 107 m−1
A Global Mapping System for Bambara Groundnut Production
No full textThis is the first study that estimates the potential production for any underutilised
crop on a global basis. Our long-term aim is to demonstrate how this approach,
initially for bambara groundnut, can be used to assess the potential productivity
of many underutilised food crops at locations beyond their current distribution.
The most significant contributions from this study are the integration of a
weather simulator and a crop simulation model into a Geographical Information
System (GIS) to predict potential production of bambara groundnut over
the globe. The integration came through a coincidence of interests. FAO needed
to improve the knowledge and better use of underutilised crops that can contribute
to the food security of the world s poorest people. For the University of
Nottingham it was an opportunity to provide a geographic basis for their existing
crop model that had been refined by the third author so that predictions of
bambara groundnut potential could be extended to new sites.
Integration of the weather generator and model into a GIS was based on the
experiences gained by the second author in using fish growth models to estimate
potential for fish farming in Africa (FAO, 1998, available at www.fao.org/docrep/
W8522e/W8522E00.htm)
Poblaciones de Lolium sp resistentes a cletodim en el sur de Buenos Aires
No full textEn la Argentina la resistencia de Lolium sp. a glifosato se ha comprobado desde hace tiempo, como también a otros herbicidas. Relevamientos previos indicarían que también se manifiesta la resistencia a cletodim. El objetivo de este trabajo fue comparar dos poblaciones de Lolium sp. (A y B) provenientes de lotes con 25 y 18 años de agricultura continua y putativamente resistentes a
cletodim, respecto a una sensible (C) y evaluar su comportamiento frente a glifosato y haloxifop-R-metil. Se efectuaron dos experimentos simultáneos en macetas, a dosis crecientes de cletodim (48, 96, 192, 288, 576 g p.a. ha-1) y otro con dosis fija de glifosato (1240 g p.a. ha-1) y haloxifop-R-methyl (97.2 g p.a. ha-1) La aplicación (volumen 250 l ha-1) se efectuó el 16 de septiembre de 2019 sobre plantas en macollaje. El Índice de Resistencia de población A y B respecto a la C fue de 81.3 y 109.6 veces, respectivamente.
La población C mostró
sensibilidad normal a glifosato y haloxifop,
pero A solo respondió a glifosato,
mientras que haloxifop-R-metil no tuvo
efecto sobre A y B.EEA BordenaveFil: Vigna, Mario Raúl. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bordenave; ArgentinaFil: Carretto Nocolo, Luis Miguel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bordenave; ArgentinaFil: Carretto Nocolo, Luis Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Becario Doctorado; ArgentinaFil: Mendoza, J. Asesor privado; Argentin
The Principle of Legitimate Expectations and the Protection of Trust in the Polish Administrative Law
No full textThe principle of legitimate expectations concerns primarily the relationship between public administration and individuals. It endeavours to solve the conflict between the administration’s goal to protect confidence in its activities and the need for change of the objectives of administrative policy. In the Polish administrative law, the concept of legitimate expectations has so far been identified with the principle of the protection of trust. The aim of this study is to demonstrate that the recent amendment to the Polish Code of Administrative Procedure should serve as an impulse for further research into the meaning of this principle in the domestic legal order.Anna De Ambrosis Vigna: [email protected] R. Kijowski: [email protected] De Ambrosis Vigna – PhD. LL.M, assistant professor at the Department of Administrative Law at the Faculty of Law, University of Bialystok; graduate of the Michigan State University College of Law; author of publications on administrative law, comparative law, higher education law.Dariusz R. Kijowski – professor, Chief of the Department of Administrative of Law at the Faculty of Law, University of Białystok; President of the Self-government Appeal Board in Białystok; member of the Legislative Council at the Prime Minister Office.Anna De Ambrosis Vigna - Uniwersytet w BiałymstokuDariusz R. Kijowski - Uniwersytet w BiałymstokuArigho R., Legitimate Expectations in Irish and EU law – Lessons for Ireland? “Irish Journal of European Law” 2016, vol. 19, issue 1.Babiuch H., Europejski Kodeks Dobrej Administracji a polska procedura i praktyka administracyjna, Zeszyty Naukowe Państwowej Wyższej Szkoły Zawodowej im. Witelona w Legnicy” 2017, no. 1.Boć J., Administracja a obywatel, (in:) A. Błaś, J. Jeżewski, Administracja publiczna, J. Boć (ed.) Poznań 2004.Europejski kodeks dobrej praktyki administracyjnej, Europejski Rzecznik Praw Obywatelskich, https://www.ombudsman.europa.eu/en/resources/code.faces/pl/3510/html.bookmark#/page/1 (access 8.12.2017).Jurcewicz A., Traktatowe podstawy unijnego prawa rolnego w świetle orzecznictwa, Warszawa 2012.Kmieciak Z., Ogólne zasady prawa i postępowania administracyjnego, Warszawa 2000.Krawczyk A., Zasady postępowania przed organami administracji unijnej, (in:) System prawa administracyjnego. Europeizacja prawa administracyjnego, R. Hauser, Z. Niewiadomski, A. Wróbel (eds.), t. 3, Warszawa 2014.Lemańska J., Uzasadnione oczekiwana w perspektywie prawa krajowego i regulacji europejskich, Warszawa 2016.The Protection of Legitimate Expectations in Administrative Law and EU Law. Answers to Questionnaire: Germany, Seminar organized by the Supreme Administrative Court of Lithuania and ACA-Europe, Vilnius, 21-22 April 2016.Prus Ł., the commentary to the judgment of the CJEU of 19 May 1992 r., C-104/89 oraz C-37/90, “Europejski Przegląd Sądowy” 2012, no. 3.Shonberg S., Legitimate expectation in administrative law, Oxford 2000.Świątkiewicz J., Europejski Kodeks Dobrej Administracji (wprowadzenie, tekst i komentarz o zastosowaniu kodeksu w warunkach polskich procedur administracyjnych), Warszawa, March 2007.Świątkiewicz J., Europejski Kodeks Dobrej Administracji (wprowadzenie, tekst i komentarz o zastosowaniu kodeksu w warunkach polskich procedur administracyjnych) Wydanie VI, Warszawa 2007, https://www.rpo.gov.pl/pliki/1192700305.pdf (access 30.11.2017).Sharpston E., European Community Law and the Doctrine of Legitimate Expectations: How Legitimate, and for Whom, “Northwestern Journal of International Law & Business” 1990, vol. 11, issue 1.Thomas R., Legitimate expectation and proportionality, Oxford-Portland Oregon 2000.Tuleja P., Komentarz do art. 2 Konstytucji, (in:) Konstytucja RP, tom 1, Komentarz do art. 1-86, M. Safjan, L. Bosek (eds.), Wraszawa 2016.Zoll A., Prawo do dobrej administracji, (in:) Europejski kodeks Dobrej Administracji (tekst i komentarz o zastosowaniu kodeksu w warunkach polskich procedur administracyjnych), J. Świątkiewicz (ed.), Warszawa 2007, https://www.rpo.gov.pl/pliki/1192700305.pdf (access 8.12.2017).232395
The use of violence ini llegal markets: evidence from mahogany trade in the Brazilian Amazon
No full textAgents operating in illegal markets cannot resort to the justice system to guarantee property rights, to enforce contracts, or to seek protection from competitors’ improper behaviors. In these contexts, violence is used to enforce previous agreements and to fight for market share. This relationship plays a major role in the debate on the pernicious effects of the illegality of drug trade. This paper explores a singular episode of transition of a market from legal to illegal to provide a first piece of evidence on the causal effect of illegality on systemic violence. Brazil has historically been the main world producer of big leaf mahogany (a tropical wood). Starting in the 1990s, policies restricting extraction and trade of mahogany, culminating with prohibition, were implemented. First, we present evidence that large scale mahogany trade persisted after prohibition, through misclassification of mahogany exports as “other tropical timber species.” Second, we document relative increases in violence after prohibition in areas with: (i) higher share of mahogany exports before prohibition; (ii) higher suspected illegal mahogany activity after prohibition; and (iii) natural occurrence of mahogany. We believe this is one of the first documented experiences of increase in violence following the transition of a market from legal to illegal.illegal markets, violence, homicide, mahogany, Brazil Jel Codes: K42, O13, O17, Q58
The Use of Violence in Illegal Markets: Evidence from Mahogany Trade in the Brazilian Amazon
No full textAgents operating in illegal markets cannot resort to the justice system to guarantee property rights, to enforce contracts, or to seek protection from competitors' improper behaviors. In these contexts, violence is used to enforce previous agreements and to fight for market share. This relationship plays a major role in the debate on the pernicious effects of the illegality of drug trade. This paper explores a singular episode of transition of a market from legal to illegal to provide a first piece of evidence on the causal effect of illegality on systemic violence. Brazil has historically been the main world producer of big leaf mahogany (a tropical wood). Starting in the 1990s, policies restricting extraction and trade of mahogany, culminating with prohibition, were implemented. First, we present evidence that large scale mahogany trade persisted after prohibition, through misclassification of mahogany exports as "other tropical timber species." Second, we document relative increases in violence after prohibition in areas with: (i) higher share of mahogany exports before prohibition; (ii) higher suspected illegal mahogany activity after prohibition; and (iii) natural occurrence of mahogany. We believe this is one of the first documented experiences of increase in violence following the transition of a market from legal to illegal.illegal markets, violence, homicide, mahogany, Brazil
A Simulation Model as the Core for Integrated Weed Management Decision Support Systems: The Case of Avena fatua-Winter Wheat in the Semiarid Pampean Region of Argentina
No full textThis chapter describes a mathematical simulation model for the multiannual assessment of Integrated Weed Management (IWM) strategies. The model allows to simulate the competitive interaction between an annual weed species and a grain crop. From the weed’s side, the following processes are represented: (1) demographic dynamics on a daily basis considering the numeric composition of the different phenological states, (2) intra- and interspecific competition, (3) seed production and (4) the effect of different control methods. Regarding the crop, the following variables are computed: (1) leaf area index (LAI), (2) competition on the weed and (3) expected yield as a function of weed competition. The model was developed on Microsoft Excel® with Visual Basic complements. Results are provided for the wild oat (Avena fatua)-winter wheat (Triticum aestivum) system, a typical system of the south-west area of the semiarid Pampean region of Argentina. The model was calibrated and validated with experimental data collected along 4 years. Several multi-year scenarios were generated to evaluate the effect of different IWM strategies against common herbicide-based practices. Finally, possible improvements to the model and some guidelines towards the development of a long-term DSS for weed management are provided.Fil: Molinari, Franco Ariel. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Universidad Nacional del Sur. Departamento de Agronomía; ArgentinaFil: Blanco, Anibal Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Vigna, Mario Raul. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Bordenave; ArgentinaFil: Chantre Balacca, Guillermo Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina. Universidad Nacional del Sur. Departamento de Agronomía; Argentin
Patrón termográfico de las lesiones traumáticas de la mano
No full textSe medirá el patrón termográfico de pacientes que presentes lesiones en una sola mano,
midiendo la temperatura de ambas manos para determinar el patrón termográfico de
ambas y su delta.
Objetivo principal
Determinar el patrón termográfico de las lesiones traumáticas de la mano
Hipótesis
No aplica ya que es un estudio descriptivo
Diseño de estudio
Cohorte prospectiva, observacional
Cálculo de tamaño de la muestra y análisis estadístico
Se trata de un estudio piloto, por lo que se incluyeron 31
pacientes, de acuerdo con Browne.(1)
Para el análisis estadístico se utilizó el paquete R Commander 2.9-2, del software R
versión 4.3.2, con un nivel de confianza al 95%.
Resultados
Se analizaron datos de 31 pacientes, en total 26 hombres y 5 mujeres. Se encontraron
pacientes de entre 18 y 83 años de edad.
El 45% de los pacientes sufrieron lesiones por traumatismo (n=14), 41.9% sufrieron
heridas por quemadura (n=13), 9.7% de los pacientes sufrieron lesiones isquémicas
(n=3), 1 paciente sufrió lesión infecciosa por mano diabética (3.2%).
Los pacientes que sufren traumatismos tienen temperaturas más altas (p=0.04) que los
que sufren quemaduras o isquemias
Los pacientes que se les otorgaba tratamiento conservador con curaciones de la herida
tenían temperaturas más elevadas (p=0.005), comparado con los pacientes que se les
trataba con amputaciónInvestigadoresEstudiante
field emergence dynamics: A 38‐year experiment in the semiarid Pampean region of Argentina
No full textClimate events modulate weed population dynamics mainly by influencing field seedling emergence patterns. Field experiments aiming to study the influence of climate on the early-stage establishment of weeds are of utmost importance from a practical and strategic decision-making management point of view. The objective of this work was to analyse the effect of climate variations on the field emergence dynamics of Avena fatua in the southwest area of the semiarid Pampean region of Argentina. Field emergence patterns of A. fatua were monitored from 1977–2015. Seedling counts were destructively sampled at weekly intervals. Three quadrats (1 m2 each) were randomly distributed on a 5 ha experimental field with a high natural population density of A. fatua in the absence of a crop. Results show that the emergence strategy of this species is highly plastic with a striking variation in response to year-to-year climate signals. Avena fatua field emergence strategies were classified as staggered, early, medium and late based on both chronological and hydrothermal-time parameters. In the short-term, precipitation regimes during both the after-ripening and emergence phases largely explained the resulting emergence strategy. In the long-term, the combined effect of a reduction in both the precipitation frequency and the mean minimum temperature correlated with an increase in the staggered emergence pattern. Results also point out the adaptability of A. fatua in the area under study, further suggesting a bet-hedging fitness strategy that could diminish the risk of population decline under changing climate scenarios. From an agronomic perspective, the occurrence of staggered emergence patterns with an extended emergence window would complicate the definition of the optimal time for weed control. Thus, tailoring decisions based on the Southern Oscillation Index (SOI) episodes (neutral, negative or positive) forecast plus the implementation of weed emergence models could lead to more accurate and sustainable weed management decisions.EEA Hilario AscasubiFil: Renzi Pugni, Juan Pablo. Universidad Nacional del Sur. Departamento de Agronomía; ArgentinaFil: Renzi Pugni, Juan Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Hilario Ascasubi; Argentina.Fil: Traversa, Guadalupe. Universidad Nacional del Sur. Departamento de Agronomía; Argentina.Fil: Vigna, Mario Raúl. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bordenave; ArgentinaFil: Chantre Balacca, Guillermo Ruben. Universidad Nacional del Sur. Departamento de Agronomía; Argentina.Fil: Chantre Balacca, Guillermo Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiarida; ArgentinaFil: Chantre Balacca, Guillermo Ruben. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiarida; Argentin
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