Results 91 to 100 of about 3,325,531 (179)

Growth and puberty in a prospective cohort of patients with sickle-cell anaemia: an assessment over ten years abstract

open access: yes, 2017
Introduction: Hereditary haemoglobinopathies are the most common group of monogenic hereditary diseases in the world. Erythrocytes in sickle form, cellular expression of polymerization of deoxygenated HbS, cause intermittent vascular obstruction, leading
Cipolotti, Rosana   +11 more
core   +1 more source

Experience of operation and features of culvers made of metal corrugated structures on automobile roads

open access: yesДороги і мости
Introduction. Road culverts made of metal corrugated structures despite of more than a hundred years of application history, in Ukraine they are a fairly new type of construction and are widely used in transport construction as an alternative to ...
Mykola Harkusha
doaj   +1 more source

Interband absorption edge in the topological insulators Bi-2(Te1-xSex)(3) [PDF]

open access: yes, 2017
We have investigated the optical properties of thin films of topological insulators Bi2Te3, Bi2Se3, and their alloys Bi-2(Te1-x Se-x)(3) on BaF2 substrates by a combination of infrared ellipsometry and reflectivity in the energy range from 0.06 to 6.5 eV.
Friš Pavel   +19 more
core   +1 more source

Analysis of the impact of changing the criteria for detecting places (sites) of concentration of traffic accidents on road safety

open access: yesДороги і мости
Introduction. Ensuring road safety is one of the foremost tasks in any country with vehicular traffic. Despite significant efforts made to improve road safety in Ukraine and globally, the issue of traffic accidents is still relevant. Problem statement.
Bohdan Stasiuk   +3 more
doaj   +1 more source

Evolución histórica de la modelación de demanda de transporte urbano en Costa Rica

open access: yesInfraestructura Vial, 2018
En el presente artículo se detalla la evolución histórica de la modelación de demanda en Costa Rica, haciendo mención del primer estudio de modelación de demanda de la historia, a nivel internacional, realizado en Chicago en la década de los sesenta, a ...
Leonardo Castro Rodríguez   +2 more
doaj   +1 more source

Environmental risks in the course of the life cycle of a motor road

open access: yesДороги і мости
Introduction. The conditions of economic development and social changes in Ukraine require accelerated development of road transport infrastructure, which includes the road industry, motor roads and facilities located on them. During the construction,
Inessa Rutkovska, Olesia Yaroshchuk
doaj   +1 more source

Mejores prácticas para diseñar mezclas asfálticas con pavimento asfáltico recuperado (RAP)

open access: yesInfraestructura Vial, 2018
La utilización de pavimento asfáltico recuperado (RAP en inglés) en carreteras se ha convertido en una estrategia importante para ayudar a compensar el aumento del precio de las materias primas y mejorar la sostenibilidad de la infraestructura de ...
Fabricio Leiva Villacorta   +1 more
doaj   +1 more source

Molecular Structure of Te(OMe)4·ClTe(OMe)3, a Model for Ligand Exchange between Te(IV) Centers

open access: yes, 2016
ClTe(OiPr)3 could be prepared from stoichiometric amounts of TeCl4 and Te(OiPr)4, a reaction that requires the exchange of ligands between different Te centers.
Holger Fleischer (2525941)   +1 more
core   +1 more source

The environmental efficiency level of international airports assessment

open access: yesДороги і мости
Introduction. The importance of ensuring environmental efficiency at enterprises in the transport and logistics sector is growing. The requirements for tools that are designed to ensure the implementation of this process in airports are constantly ...
Artur Vinyukov-Proschenko   +2 more
doaj   +1 more source

Propuesta de sistema de gestión de pavimentos para municipalidades y gobiernos locales

open access: yesInfraestructura Vial, 2014
La presente ponencia presenta una propuesta de Sistema de Gestión de Pavimentos (SGP, Pavement Management System – PMS) para municipalidades o gobiernos locales con bajos recursos y que del cual se puede proseguir a una mayor sofisticación.
Andrés Sotil Chávez
doaj   +1 more source

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