Search results for "AH"
showing 10 items of 6917 documents
Chemical Vapor Deposition Synthesis and Terahertz Photoconductivity of Low-Band-Gap N = 9 Armchair Graphene Nanoribbons.
2017
Recent advances in bottom-up synthesis of atomically defined graphene nanoribbons (GNRs) with various microstructures and properties have demonstrated their promise in electronic and optoelectronic devices. Here we synthesized N = 9 armchair graphene nanoribbons (9-AGNRs) with a low optical band gap of ∼1.0 eV and extended absorption into the infrared range by an efficient chemical vapor deposition process. Time-resolved terahertz spectroscopy was employed to characterize the photoconductivity in 9-AGNRs and revealed their high intrinsic charge-carrier mobility of approximately 350 cm2·V-1·s-1.
: The Place of the State in Africa according to the World Bank : limits of a neo-liberal policy
2005
This contribution aims to analyse the change in discourse held by the World Bank concerning the reform of the State in Africa in the educational sphere. After inspection, it emerges that despite new discourses on the "fight against poverty", the World Bank's neo-liberal policy still grants the State a minor role in the design and execution of educational policies. One would have thought of an evolution from the strict structural adjustment policies towards a policy of social adjustment where fundamental assets concerning the social field would be taken into account. That is not the case : the fight against poverty policy maintains the course of adjustment policies, by preserving a minimal s…
La Place de l'Etat en Afrique selon la Banque mondiale : De l'ajustement structurel à l'ajustement social. Les limites d'une politique néo-libérale «…
2007
07003 - 17 p.; Les Documents de travail de l'IREDU 2007/3; Cette contribution a pour objectif d'analyser le changement de discours que porte la Banque mondiale sur la réforme de l'État en Afrique, et ce dans la sphère éducative. Après examen, il ressort que malgré les nouveaux discours de « lutte contre la pauvreté », la politique néo-libérale de la Banque mondiale accorde à l'État une place toujours aussi mineure dans la conception et l'exécution des politiques éducatives. On aurait pu croire à la réalité d'une évolution de la politique d'ajustement structurel stricte vers une politique d'ajustement social où des acquis fondamentaux seraient pris en compte concernant le domaine social. Il …
Body, town planning, and participation : the roles of young people and sport
2012
A gene transfer agent and a dynamic repertoire of secretion systems hold the keys to the explosive radiation of the emerging pathogen Bartonella
2013
Gene transfer agents (GTAs) randomly transfer short fragments of a bacterial genome. A novel putative GTA was recently discovered in the mouse-infecting bacterium Bartonella grahamii. Although GTAs are widespread in phylogenetically diverse bacteria, their role in evolution is largely unknown. Here, we present a comparative analysis of 16 Bartonella genomes ranging from 1.4 to 2.6 Mb in size, including six novel genomes from Bartonella isolated from a cow, two moose, two dogs, and a kangaroo. A phylogenetic tree inferred from 428 orthologous core genes indicates that the deadly human pathogen B. bacilliformis is related to the ruminant-adapted clade, rather than being the earliest diverging…
Cation Environment in BaCeO3-Based Protonic Conductors: a Computational Study
2009
Geometry calculations were performed on pure BaCeO(3) fragments and on Y- and In-doped derivatives. HF and DFT approaches were used to investigate monoclinic and orthorhombic structures. The computational methods, structural models, and electronic structure investigation protocols were tuned taking into consideration and balancing the consistency of the results against the computational cost. The calculated structures and energetics parameter, as well as the detailed orbital analysis performed on the corresponding BaCeO(3) derivatives allowed us to explain experimental findings and to develop a procedure to study the cationic octahedral environment of doped X:BaCeO(3) (X = Y, In) and undope…
A Novel Energy Harvester for Powering Small UAVs: Performance Analysis, Model Validation and Flight Results
2019
The proposed work aims at exploring and developing new strategies to extend mission parameters (measured as travel distance and mission duration (MD)) of a new class of unmanned vehicles, named Micro Air Vehicles (MAVs). In this paper, a new analytical model, identifying all factors, which determine the MAV power consumption, is presented. Starting from the new model, the design of a nanoarray energy harvester, based on plasmonics nano-antenna technology is proposed. The preliminary study was based on a 22,066,058 22,066,058 ×
Autonomous Operation of Stationary Battery Energy Storage Systems—Optimal Storage Design and Economic Potential
2021
Global warming requires a changeover from fossil fuel based to renewable energy sources on the electrical supply side and electrification of the demand side. Due to the transient nature of renewables and fluctuating demand, buffer capacities are necessary to compensate for supply/demand imbalances. Battery energy storage systems are promising. However, the initial costs are high. Repurposing electric vehicle batteries can reduce initial costs. Further, storage design optimization could significantly improve costs. Therefore, a battery control algorithm was developed, and a simulation study was performed to identify the optimal storage design and its economic potential. The algorithm used is…
Krytyka wybranych aspektów chrystologii świadków Jehowy w świetle książki Josepfa Ratzingera: Jezus z Nazaretu, cz. I: Od chrztu w Jordanie do Przemi…
2018
Pytanie Chrystusa zawarte we wszystkich ewangeliach synoptycznych: za kogo uważają Go ludzie i kim On jest dla apostołów, wydaje się być wciąż aktualne. Papież Benedykt XVI określa je jako „kamień milowy na drodze Jezusa”. Mimo rozwoju nauk humanistycznych, odpowiedzi jest wiele, a często są one sprzeczne. Niniejsza praca stanowi próbę krytyki wybranych elementów chrystologii świadków Jehowy w świetle obrazu Chrystusa ujętego w książce Josepha Ratzingera Jezus z Nazaretu, cz. I: Od chrztu w Jordanie do Przemienienia. Powyższe zestawienie wykazało, jak liczne i poważne są rozbieżności w postrzeganiu Jezusa przez organizację oraz Jego przedstawieniu w Biblii. Fakty te przemawiają za konieczno…
CCDC 1564495: Experimental Crystal Structure Determination
2017
Related Article: Fernando Rabasa-Alcañiz, Javier Torres, María Sánchez-Roselló, Tomás Tejero, Pedro Merino, Santos Fustero, Carlos del Pozo|2017|Adv.Synth.Catal.|359|3752|doi:10.1002/adsc.201700975