Results 41 to 50 of about 25,794 (101)

The Influence of Water and Mineral Oil On Mechanical Losses in the Displacement Pump for Offshore and Marine Applications

open access: yesPolish Maritime Research, 2018
In this paper mechanical losses in a positive displacement pump supplied with water and mineral oil (two liquids having significantly different viscosity and lubricating properties) are described and compared.
Śliwiński Paweł
doaj   +1 more source

21st Century drought-related fires counteract the decline of Amazon deforestation carbon emissions

open access: yesNature Communications, 2018
Tropical carbon emissions are largely derived from direct forest clearing processes. Yet, emissions from drought-induced forest fires are, usually, not included in national-level carbon emission inventories.
L. Aragão   +20 more
semanticscholar   +1 more source

Centrifugal Compressor Performance Improvement through Multi Splitter Impeller

open access: yesPolish Maritime Research, 2019
In the paper, a back swept impeller of centrifugal compressor is experimentally studied and numerically validated and modified to increase its pressure ratio and improve efficiency, as well as to analyse the effect of splitter blade location between two ...
Malik Adil   +4 more
doaj   +1 more source

On Some Problems in Determining Tensile Parameters of Concrete Model from Size Effect Tests

open access: yesPolish Maritime Research, 2019
The paper presents results of numerical simulations of size effect phenomenon in concrete specimens. The behaviour of in-plane geometrically similar notched and unnotched beams under three-point bending is investigated.
Marzec Ireneusz, Bobiński Jerzy
doaj   +1 more source

Outcomes of the Tall-Cell Variant of Papillary Thyroid Carcinoma in Patients with Different Ages: A 17-Year Mono-Institutional Experience

open access: yesCancers, 2023
Simple Summary This is the largest mono-institutional study addressing the debated issue about the impact of tall-cell areas on papillary thyroid carcinoma (PTC) prognosis correlated with patient age. The results of this series confirm that the tall-cell
A. Proietti   +12 more
semanticscholar   +1 more source

The Energy Efficiency Gap in Turkish Maritime Transportation

open access: yesPolish Maritime Research, 2019
The Turkish Merchant Shipping Industry has recently witnessed an increasing awareness of the importance to minimize environmental pollution and fuel oil consumption.
Konur Olgun   +4 more
doaj   +1 more source

NUMERICAL PREDICTION ON VIBRATION AND NOISE REDUCTION EFFECTS OF PROPELLER BOSS CAP FINS ON A PROPULSION SYSTEM

open access: yesBrodogradnja, 2020
To investigate the vibration and noise reduction effects of Propeller Boss Cap Fins (PBCF), the Large Eddy Simulation (LES) method has been employed in the noise performance estimation of a propeller-rudder system.
Yu Sun   +3 more
doaj   +1 more source

Technology Concept of TLP Platform Towing and Installation in Waters with Depth of 60 m

open access: yesPolish Maritime Research, 2017
The article is part of the design and research work conducted at the Gdansk University of Technology, Faculty of Ocean Engineering and Ship Technology, in cooperation with a number of other research centres, which concerns offshore wind farms planned to ...
Dymarski Czesław   +2 more
doaj   +1 more source

Design Methodology for Small Passenger Ships On the Example of the Ferryboat Motława 2 Driven by Hybrid Propulsion System

open access: yesPolish Maritime Research, 2017
Dynamic development in practically all fields of science and engineering has not passed over shipbuilding. In last years, engineers got to their use computer software which makes it possible to perform strength and hydrodynamic calculations as well as to
Gełesz Paweł   +4 more
doaj   +1 more source

Investigations of Topographic Effect on Radial Current in South Yellow Sea

open access: yesPolish Maritime Research, 2017
Large scaled projects are conducted in South Yellow Sea in recent years. Topographic effect and tidal current are key issues to the coastal engineering and the ocean engineering. In this study, field surveys were conducted to investigate the tidal level,
Chen Cheng, Wang Yigang, Huang Huiming
doaj   +1 more source

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