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    Wyświetlanie 1-11 z 11
    Tytuł:
    Transmittance measurement of the in vivo human eye with a double-pass system
    Autorzy:
    Sánchez, Roberto
    De Paul, Aníbal
    Burgos-Fernández, Francisco
    Vilaseca, Meritxell
    Pujol, Jaume
    Issolio, Luis
    Powiązania:
    https://bibliotekanauki.pl/articles/1835770.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    double-pass
    transmittance
    human eye
    Opis:
    Purpose: To develop a methodology based on a double-pass system to obtain information about the transmittance of ocular media. Methods: The procedure consists of recording double-pass images at different powers of a laser diode of 780 nm and determining the scattering in an area between 25–35 arcmin of each image. The scattering showed linear behavior in respect to the irradiance of the laser, and the slope of the linear fit was proportional to the transmittance squared of the media evaluated. An artificial eye with different filters was tested first. Then, fifteen subjects with clear ocular media were divided into two groups: ten subjects classified by the iris color were recruited for the measurements of an ocular transmittance index and the estimation of the transmittance (group A), and another five subjects were selected for measurements with neutral filters (group B). Results: The measurements performed in group A presented a mean transmittance of 42.95%. No differences in the transmittance were found between subjects with different iris color (p = 0.154). Measurements in group B showed a good correlation (r = 0.959, p < 0.001) between the expected and the measured value for the transmittance. Conclusion: We proposed and evaluated a method to determine the transmittance of the eye in vivo using the double-pass system.
    Źródło:
    Optica Applicata; 2021, 51, 1; 1-21
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The distribution of wage inequality across municipalities in Mexico: a spatial quantile regres-sion approach
    Autorzy:
    Valdez, Rolando I.
    García-Fernández, Francisco
    Powiązania:
    https://bibliotekanauki.pl/articles/22443155.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Badań Gospodarczych
    Tematy:
    wage inequality
    spatial quantile regression
    municipalities
    Opis:
    Research background: According to classical labor economics, wage differences among regions of a country that has free-factor mobility should eventually vanish. However, the level of wage inequality among Mexican territories is increasing. The nature and causes of this discrepancy are worth identifying. Purpose of the article: To identify the spatial relationship of wage inequality that existed in the Mexican metropolitan system during the years 2010 and 2015. Methods: We develop a model of wages that considers the interaction between spatial units within a region. Then, we specify a spatial autoregressive model with the average wage per municipality as a dependent variable. This variable is spatially lagged along with other controls such as productivity, schooling, and migration. We combine data from population and economic censuses. Then, we perform a quantile regression to estimate the spatial effect of wage in a region upon quartiles of the wage distribution. Findings & value added: Wage inequality increases within a given region when the average wage increases in one of said region?s municipalities. This phenomenon occurs because in municipalities that are neighbors of the one that enjoys a wage increase, the average wage tends to decrease. The impact is larger in those municipalities whose average wage is in the lower range of the regional wage distribution. Wage inequality is also increased by internal migration and increased productivity. These latter findings are some of the first for Mexico at this aggregation level. A novel aspect of our study is its use of territory as an observation unit for which statistics from population and economic censuses are combined to draw inferences about spatial inequality.
    Źródło:
    Equilibrium. Quarterly Journal of Economics and Economic Policy; 2022, 17, 3; 669-697
    1689-765X
    2353-3293
    Pojawia się w:
    Equilibrium. Quarterly Journal of Economics and Economic Policy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Terahertz-based system for dehydration analysis of hydrogel contact lenses
    Autorzy:
    Burgos-Fernández, Francisco J.
    Guaus, Ester
    Martínez, Cristina
    Vilaseca, Meritxell
    Powiązania:
    https://bibliotekanauki.pl/articles/174402.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    terahertz radiation
    terahertz system
    hydrogel contact lens
    dehydration
    water content
    lenscare solutions
    Opis:
    The use of terahertz-based techniques has grown very fast since they are capable of performing evaluations at molecular level, being very suitable for the analysis of biological samples and biomaterials such as those for contact lenses. These biomaterials are continuously evolving to enhance the lens wearer’s comfort by improving their hydration state and surface wettability. Therefore, this study examines a novel terahertz system for the assessment of the temporary in vitro dehydration of hydrogel contact lenses, which provides a new index to assess their state of hydration. Several conventional and silicone hydrogel contact lenses and lens care solutions were analysed. Traditional methods such as the gravimetric determination of water content and the measurement of the static contact angle were also carried out for the validation of the developed system. The dehydration rate measurements of contact lenses obtained with the proposed system correlated with the values provided by traditional methods. As a whole, conventional hydrogel contact lenses exhibited the lowest values for dehydration rate. The tests conducted on various solutions showed a correlation between the wetting action of the solution and the dehydration rate of the contact lens material.
    Źródło:
    Optica Applicata; 2019, 49, 4; 571-584
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sobre el habla coloquial de Cádiz: aportaciones para el desarrollo de la competencia comunicativa en el español como lengua extranjera
    Autorzy:
    Fernández, Rafael Jiménez
    Romer, Oliva Manuel Francisco
    Baran, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/638432.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    colloquial speech, Spanish, Cadiz, communicative competence
    Opis:
    On the colloquial speech of Cadiz: contributions to the development of communicative competence in Spanish as a foreign languageBased on the research conducted on social stratification of language use in different towns of the province of Cadiz, we intend to describe in the present paper the discursive use of the following morphological and syntactic phenomena: pronouns ustedes/vosotros, past tense and present perfect verb forms, infinitive for the imperative, and dequeísmo/queísmo variation. For this purpose we will rely on a source document constituted by a series of oral recordings of colloquial speech produced by speakers of different sex, social class and age.
    Źródło:
    Romanica Cracoviensia; 2014, 14, 1
    2084-3917
    Pojawia się w:
    Romanica Cracoviensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Revalorization of mineral coal, to obtain carbonaceous materials with high added value
    Autorzy:
    Vidal-Lombas, Juan-José
    Álvarez-Fernández, Martina-Inmaculada
    Casado-Sulé, María-Concepción
    Prendes-Gero, Maria-Belen
    Suárez-Domínguez, Francisco-José
    Powiązania:
    https://bibliotekanauki.pl/articles/218732.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    węgiel aktywowany
    adsorpcja
    porozymetria
    active carbon
    activation
    adsorption
    pyrolysis
    porosimetry
    Opis:
    This paper shows the possibility that the mineral coal existing in the mining basins of northern Spain have a high added value. This would facilitate its future use in different fields such as new materials, nanotechnology, energy use in situ, coal bed methane, enhanced coal bed methane and coalmine methane.An analytical study of mineral coal samples is carried out. The samples come from two deposits loca-ted in coal basins of the Cantabrian Mountains. The duly prepared samples are subjected to an activation process. Within this transformation, different treatments are applied to different sub-samples. Some of the sub-samples suffer a previous demineralization by successive attacks with acids, followed by oxidation and pyrolysis. Finally, all of them are activated with CO2 and H2O(steam).The carbonaceous products resulting from each treatment are characterised. The results show that all the pre-treatments used were positive for the textural development of the materials. Likewise, proper management of the processes and of the different operating variables allows the procurement of carbo-naceous materials with a “tailor-made” structural development of the coal type. This material receives the name “activated” and can be employed in specific processes.
    Źródło:
    Archives of Mining Sciences; 2020, 65, 2; 225-239
    0860-7001
    Pojawia się w:
    Archives of Mining Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New Trends in Substrates and Biogas Systems in Poland
    Autorzy:
    Marks, Stanisław
    Dach, Jacek
    Fernandez Morales, Francisco Jesus
    Mazurkiewicz, Jakub
    Pochwatka, Patrycja
    Gierz, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/124959.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    biogas plant
    biowaste
    agriculture
    industry
    biogas
    methane
    new trends
    substrates
    new technologies
    Opis:
    The amendment to the Polish Renewable Energy Act creates great opportunities for the development of the biogas market in Poland. Years of experience in biogas production in Western Europe and the development of biogas installations in Poland indicate the requirement to look for alternative substrates to those produced from dedicated crop production (mainly maize silage). Feasible solutions include the use of biodegradable waste from agriculture or industry as well as municipal landfill sites. The usage of these substrates in the methane fermentation process offers low cost, high biogas production and the safe management of biowaste. The arguments for using them in biogas installations are persuasive. This article presents new approaches of biogas plant installation solutions which allows for the effective fermentation of biowaste from animal and vegetable production, from the agro-food industry and from municipal waste.
    Źródło:
    Journal of Ecological Engineering; 2020, 21, 4; 19-25
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of the police operational tactical procedures for reducing officer injuries resulting from physical interventions in problematic arrests. The case of the Municipal Police of Cádiz (Spain)
    Autorzy:
    Vera Jiménez, Jose C.
    Fernandez, Francisco
    Ayuso, Jesus
    Lorente Acosta, Jose Antonio
    Powiązania:
    https://bibliotekanauki.pl/articles/2116675.pdf
    Data publikacji:
    2020-01-17
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    use of police force
    operational tactical procedures
    arrest and self-defense skills
    injury leaves prevention
    prevention of labor risks
    criminology
    Opis:
    ObjectivesThis paper describes some operational tactical procedures (OTP) and discusses the results of a 14-year-long study, spanning the period 2003–2016, conducted by the Municipal Police of Cádiz, Spain, which comprised 3 time periods: 2003–2006, when the officers were trained in traditional policing procedures; 2007–2013, when the officers were taught an innovative set of OTP in the form of a basic set of self-defense and arrest mechanisms, different from the traditional policing procedures that rely on martial arts and combat sports; and finally 2014–2016, when the OTP training was discontinued. The aim of this study was to improve policing and reduce officer injuries resulting from interventions in controversial or violent situations, such as problematic arrests.Material and MethodsThe study involved 162 police officers and commanders of the Municipal Police of Cádiz, who were in street duty for their first time. There were 8 females and 154 males aged 24–55 years. Three OTP stages are shown as examples.ResultsBased on the analysis of “training hours” and “physical interventions in problematic arrests,” the results were: 1) the number of sick leaves in the police was identical according to the number of arrests, and 2) data on sick leaves show remarkable differences among the 3 periods under analysis.ConclusionsThe OTP-based training substantially reduced officer sick leaves. The overall reduction in sick leaves in the period 2007–2013 was observed that cannot be ascribed to a decrease in criminal acts, and hence in police physical interventions.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2020, 33, 1; 35-43
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Emotional education in teacher training through music
    Edukacja emocjonalna w szkoleniu nauczycieli poprzez muzykę
    Autorzy:
    Garcia, iciar Nadal
    Amat, Carmen Fernandez
    Gomez, Francisco Jose Balsera
    Powiązania:
    https://bibliotekanauki.pl/articles/564605.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
    Tematy:
    emotional education, music, teacher training
    edukacja emocjonalna, muzyka, kształcenie nauczycieli
    Opis:
    In the present article, the authors attempt to discuss the importance of working emotional intelligence with students who study the Degree of Teacher Training in Primary Education and Nursery Education. They pictured the benefits that emotional education through music offers. The authors tried to show the importance of developing musical intelligence in future teachers. It is connected with the fact that teachers directly influence their students- the all-round motivation and development. Music facilitates the interrelations between the teacher and learning process and the teacher-student relationship.
    W przedstawionym artykule autorzy starali się ukazać istotność rozwijania emocjonalnej inteligencji w pracy ze studentami studiów nauczycielskich edukacji przedszkolnej i wczesnoszkolnej. Podjęli kwestię zalet kształcenia emocjonalnego poprzez muzykę. Autorzy chcieli pokazać jak ważnym jest rozwój muzycznej inteligencji u przyszłych nauczycieli. Wiąże się to z tym, że nauczyciele wpływają bezpośrednio na uczniów – na ich rozwój ogólny i motywację, a muzyka sprzyja korelacji nauczyciela i procesu nauczania oraz relacji nauczyciela z uczniem.
    Źródło:
    Kultura – Przemiany – Edukacja; 2017, 5; 295-303
    2300-9888
    2544-1205
    Pojawia się w:
    Kultura – Przemiany – Edukacja
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Donde habita el olvido: recuperando el lugar de la gramática en las aulas
    Where Oblivion Dwells: Reclaiming the Place of Grammar in the Classroom
    Autorzy:
    Romero Oliva, Manuel Francisco
    Jiménez Fernández, Rafael
    Trigo Ibáñez, Ester
    Powiązania:
    https://bibliotekanauki.pl/articles/2056951.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Tematy:
    didáctica de la gramática
    lingüística del texto
    competencia lingüística
    competencia comunicativa
    transposición didáctica
    grammar didactics
    text linguistics
    linguistic competence
    communicative competence
    didactic transposition
    Opis:
    El presente trabajo reflexiona sobre el papel de la gramática en la enseñanza de la lengua. El estudio parte de una revisión de los principales enfoques gramaticales para delimitar las causas de su alejamiento desde unos planteamientos que tengan como referencia la mejora del comportamiento lingüístico de los aprendientes. Este recorrido epistemológico servirá de base de fundamentación para generar un proceso didáctico que la ubica en relación con la lingüística del texto y que permite a la gramática adquirir su valor pedagógico en el desarrollo de la competencia lingüística y comunicativa de los estudiantes.
    This paper reflects on the role of grammar in language teaching. The study starts from a review of the main grammatical approaches in order to delimit the causes of their distancing from approaches that have as reference the improvement of the linguistic behaviour of learners. This epistemological journey will serve as a basis for generating a didactic process that places it in relationship with the linguistics of the text and that allows grammar to acquire its pedagogical value in the development of the linguistic and communicative competence of students.
    Źródło:
    Lublin Studies in Modern Languages and Literature; 2020, 44, 3; 118-129
    0137-4699
    Pojawia się w:
    Lublin Studies in Modern Languages and Literature
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cognitive and language-based disabilities of children diagnosed with cancer
    Poznawcze i językowe zaburzenia u dzieci z rozpoznaniem raka
    Autorzy:
    Alvarez-Benito, Gloria
    Fernandez-Corbacho, Anali
    Herrero Machancoses, Francisco
    del Carmen Fonseca-Mora, Maria
    Powiązania:
    https://bibliotekanauki.pl/articles/1401440.pdf
    Data publikacji:
    2019-06-25
    Wydawca:
    Państwowa Uczelnia Zawodowa we Włocławku
    Tematy:
    childhood cancer
    language disabilities
    cognitive evaluation
    discourse analysis
    communication abilities
    language use
    rak dziecięcy
    zaburzenia językowe
    ocena poznawcza
    analiza dyskursu
    zdolności komunikacyjne
    użycie języka
    Opis:
    The survival rate of children suffering from cancer has increased, but collateral effects have been observed. A mixed-method was used to evaluate cancer children’s language and cognitive abilities. Variables such as IQ and verbal comprehension, perceptual reasoning, working memory and processing speed were tested. Further-more, a semiguided 30-minute-long conversation on everyday matters was used for linguistic evaluation. Results confirm that language problems were present at phonological, lexical-semantic, structural or syntactic, pragmatic and non-verbal levels.
    Wskaźnik przeżywalności dzieci cierpiących na raka wzrósł, ale zaobserwowano efekty dodatkowe. Metoda mieszana została wykorzystana do oceny języka i zdolności poznawczych dzieci chorych na raka. Przetestowano zmienne, takie jak IQ i rozumienie werbalne, rozumowanie percepcyjne, pamięć roboczą i szybkość przetwarzania. Ponadto do oceny językowej użyto 30-minutowej, częściowo sterowanej rozmowy na temat spraw codziennych. Wyniki potwierdzają, że problemy językowe były obecne na poziomach fonologicznych, leksykalno-semantycznych, strukturalnych lub syntaktycznych, pragmatycznych i niewerbalnych.
    Źródło:
    Zeszyty Naukowe Zbliżenia Cywilizacyjne; 2019, 15, 2; 12-37
    1896-4087
    Pojawia się w:
    Zeszyty Naukowe Zbliżenia Cywilizacyjne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    COCAINE CONSUMPTION IN THE CITY OF MURCIA (SOUTHEAST OF SPAIN) ESTIMATED BY WASTEWATER ANALYSIS: APPLYING AN ACCURATE AND VALID TOOL TO OBTAIN OBJECTIVE DATA FOR DRUG ABUSE.
    Autorzy:
    Navarro-Zaragoza, Javier
    Fernández-López, Lucía
    Caravaca, Francisco
    Falcón, María
    Luna, Aurelio
    Powiązania:
    https://bibliotekanauki.pl/articles/895370.pdf
    Data publikacji:
    2019-02-28
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Tematy:
    wastewater
    cocaine
    mass spectrometry
    drug consumption
    benzoylecgonine and cocaethylene
    Opis:
    Cocaine consumption is one of the most relevant public health issues in America and Europe. There are different methods to estimate cocaine consumption, with different levels of accuracy. Although surveys is one of the most employed methods, it usually underestimates cocaine consumption. Recent studies have validated the use of wastewater analysis as the method that would provide more accurate results, as it is based on the analysis of residues of illicit drugs and their metabolites that are excreted by human flow through wastewater treatment plants. This study aims to estimate cocaine consumption in the southeast of Spain by wastewater analysis. Samples were analyzed by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). According to this analysis, cocaine consumption has been estimated at 410,6 milligrams per day and per 1000 inhabitants, a higher result than that obtained at other European cities of similar size. Highest consumption occurs during the weekend, which is consistent with cocaine being categorized as a recreational drug. The results of this analysis show that cocaine use is an increasing public health and economic problem. Finally, wastewater analysis offers different options to estimate its use at this region of Spain.
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 1; 137-145
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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