Results 31 to 40 of about 430,799 (337)
Recent Developments in Bulgarian Transport Privatization Policy [PDF]
, 1997 Expanding Bulgaria’s political, economic, and cultural cooperation with the countries of Asia is a major priority of the Bulgarian government policy.
Kraus, Wilhelm
core +2 more sources
Energies, 2020 The present paper is a review on efficiency issues related to three important sectors of the transportation systems: railways, electrical vehicles, and marine.
M. Brenna +6 more
semanticscholar +1 more source
ATORVASTATIN IN PRIMARY PREVENTION AMONG MEN WITH HIGH CORONARY RISK LEVELS
Кардиоваскулярная терапия и профилактика, 2013 Aim. To assess the effectiveness of a complex programme of primary cardiovascular prevention, including statin therapy (Liptonorm), among men from an occupational sample who have high coronary risk levels.Material and methods.
I. V. Osipova +5 more
doaj +1 more source
Опухоли головы и шеиNowadays, doctors of almost all specializations have to deal with patients who have one or another voluminous formations of the skin and subcutaneous tissue with localization in the head and neck region, which are heterogeneous in their etiology.
M. S. Fedina +6 more
doaj +1 more source
Rail Wear Evolution on Small-Radius Curves under Mixed Traffic Conditions, In-Field Investigations
Applied Sciences, 2023 This paper’s aim is to assess the rail wear evolution of railway tracks under mixed traffic conditions for sharp curves. Field investigations were conducted over a period of five years, at 800 points on a rail track, for two curves that underwent ...
Madalina Ciotlaus +5 more
doaj +1 more source
Towards the Internet of Smart Trains: A Review on Industrial IoT-Connected Railways
Italian National Conference on Sensors, 2017 Nowadays, the railway industry is in a position where it is able to exploit the opportunities created by the IIoT (Industrial Internet of Things) and enabling communication technologies under the paradigm of Internet of Trains.
Paula Fraga-Lamas +2 more
semanticscholar +1 more source
Impact of Harmonic Power Terms on the Energy Measurement in AC Railways
IEEE Transactions on Instrumentation and Measurement, 2020 In electric ac railways, a nonnegligible amount of active power and reactive power can be associated with harmonics. Electric railways are characterized by a mix of moving loads in variable operating conditions with a substantial superposition of ...
A. Mariscotti
semanticscholar +1 more source
Magnetic Flux Guides by Material Extrusion
Advanced Science, EarlyView.Magnetic flux guidance can increase inductive coupling and forces for magnetic sensors, actuators, and transducers. Here, a magnetic material extrusion method is used to fabricate flux concentration structures of arbitrary shapes with a magnetic permeability of 42. In line with simulation analysis, experimental results show that these materials provide
Jorge Cañada +4 more
wiley +1 more source
Advanced Science, EarlyView.Schematic showing a stretchable triboelectric nanogenerator based on interlocked wavy architectures that uses EGaIn microflower‐embedded PVDF‐TrFE and Nylon‐6 nanofiber membranes. The multi‐petaled, electron‐rich EGaIn microflowers enhance interfacial polarization and capacitance, while the interlocked wavy architecture enlarges the effective contact ...
Qianqian Xu +12 more
wiley +1 more source
Road Safety for All Road Users – Current Situation and Perspectives for 2030
Romanian Journal of Transport Infrastructure, 2023 This article presents a brief overview of Romania’s road infrastructure and road safety situation in general, and outlines perspectives for reducing the number of lives lost in road crashes by 2030. Romania’s road fatality rate per 100,000 population has
Alina Burlacu F. +2 more
doaj +1 more source