Search results for "Ven"
showing 10 items of 31764 documents
Tumors pediàtrics del SNC
2010
Es descriuen els principals tumors pediàtrics del SNC, els símptomes associats a la malaltia i els seus tractaments i les seves repercussions en l'aprenentatge escolar, i la intervenció educativa.
High-Sensitivity Whispering Gallery Mode Humidity Sensor Based on Glycerol Microdroplet Volumetric Expansion
2021
We demonstrate a highly sensitive whispering gallery mode (WGM) relative humidity (RH) sensor based on a glycerol microdroplet. WGMs were excited using a 760 nm tunable semiconductor laser. We used free space coupling, which is effective when using a liquid resonator. A detailed analysis of different parameters influencing the sensor’s characteristics (sensitivity, hysteresis, resolution, stability, and temperature) is presented. The sensitivity of the sensor is one of the highest reported (2.85 nm/% RH in the range 50–70% RH with the resolution 1 × 10−4% RH). This type of humidity sensor has several advantages, such as high sensitivity, extended lifetime, good repeatability, and low cost, …
An experimental and theoretical study of a heptacoordinated tungsten(VI) complex of a noninnocent phenylenediamine bis(phenolate) ligand
2018
Abstract [W(N2O2)(HN2O2)] (H4N2O2 = N,N′-bis(3,5-di-tert-butyl-2-hydroxyphenyl)-1,2-phenylenediamine) with a noninnocent ligand was formed by reaction of the alkoxide precursor [W(eg)3] (eg = the 1,2-ethanediolate dianion) with two equivalents of ligand. The phenol groups on one of the ligands are completely deprotonated and the ligand coordinates in a tetradentate fashion, whereas the other ligand is tridentate with one phenol having an intact OH group. The molecular structure, magnetic measurements, EPR spectroscopy, and density functional theory calculations indicate that the complex is a stable radical with the odd electron situated on the tridentate amidophenoxide ligand. The formal ox…
Electronic Energy Meter Based on a Tunnel Magnetoresistive Effect (TMR) Current Sensor
2017
In the present work, the design and microfabrication of a tunneling magnetoresistance (TMR) electrical current sensor is presented. After its physical and electrical characterization, a wattmeter is developed to determine the active power delivered to a load from the AC 50/60 Hz mains line. Experimental results are shown up to 1000 W of power load. A relative uncertainty of less than 1.5% with resistive load and less than 1% with capacitive load was obtained. The described application is an example of how TMR sensing technology can play a relevant role in the management and control of electrical energy.
Mentored to feel free : exploring family business next generation members' experiences of non-family mentoring
2005
The purpose of this study was to create a substantive theory of non-family mentoring that can be applied to the use of family businesses. The experiences of non-family mentoring were explored by using a Grounded Theory approach and the data was gathered through in-depth interviews from seven next generation members (NGM).In this study, the essence of non-family mentoring is discussed from three perspectives of freedom. The feeling of freedom covers the NGMs’ aspirations that coincide with different phases in their preparation. First, freedom to personal mastery reveals the NGM’s aspiration to create own area of applying one’s capability. Due to the effective experience of non-family mentori…
Farming intensity indirectly reduces crop yield through negative effects on agrobiodiversity and key ecological functions
2022
International audience; Farming intensity and landscape heterogeneity influence agrobiodiversity and associated ecological functions. The relative contributions of these agroecosystem components to agricultural production remain unclear because of inter-relations and weather-dependant variations. Using a structural equation modelling approach, we estimated direct and indirect contributions of farming intensity (soil management, pesticide use and fertilisation) and landscape heterogeneity (of semi-natural covers and crop mosaic) to cereal crop production, in 54 fields (mostly wheat), in two years (24 and 30 fields). Indirect effects were evaluated through agrobiodiversity (carabid and plant …
Turvekiista paljastaa demokratian puutteita
2022
Sen lisäksi, että koskemattomien luonnonvarojen hyödyntäminen pilaa alkuperäistä luontoa, se tuottaa usein haittoja myös ihmisille. Kansalaisten näkökulmasta kysymys on ympäristöoikeudenmukaisuudesta, jolla tarkoitetaan sitä, että luonnonvarojen käytöstä koituvien hyötyjen ja haittojen pitäisi kohdistua tasapuolisesti ja sosiaalisesti oikeudenmukaisesti eri ihmisryhmiin. Haitoista kärsivät ihmiset ovat monissa tilanteissa ryhtyneet protestoimaan omaa lähiluontoa hyödyntävää toimintaa vastaan ja vaatineet julkista valtaa estämään toiminnan tai ainakin sääntelemään sitä tiukemmin. Tällainen ympäristökonflikti on syntynyt, kun turpeennostoalueiden lähellä asuvat ihmiset ovat vastustaneet turve…
La preservación del favor filii en supuestos de ruptura de la convivencia de los acogedores, tutores o guardadores del menor
2021
Cuando la guarda del menor por parte de los progenitores no es posible y esta es atribuida de forma conjunta a dos personas convivientes que posteriormente cesan dicha convivencia, resulta necesario determinar cuál de ellas va a ejercer a partir de ese momento las funciones inherentes a dicha guarda. Las posibles soluciones dependerán de si se trata de un supuesto de acogimiento, de tutela o de siempre guarda. When care of the child by the parents is not possible and is attributed jointly to two people living together who subsequently stop living together, it is necessary to determine which of them will exercise the functions inherent to the care from that moment on. The possible solutions …
La edad pupilar y la mayoría de edad en la Valencia medieval
2012
The present work considers the study and the juridical consequences of the transition from minority to adulthood in the former Kingdom of Valencia. More specifi cally, it addresses issues such as the necessary presence of the tutor or guardian of the minor, his juridical incapacity or the prohibitions to which they were subjected. Regarding adulthood, the focus is primarily on the so-called benefi t of the age and its application in the contractual sphere.<br><br>El presente trabajo aborda el estudio y las consecuencias jurídicas del tránsito de la edad pupilar a la mayoría de edad en el antiguo Reino de Valencia. En concreto, con relación al menor se abordan cuestiones como la …