Technical Sciences

No. 12 2009

Reviewers
Janusz Badur, Józef Beluch, Jarosław Bosy, Stefan Cacoń, Romana Cielątkowska, Marek Fidali, Jarosław Frączek, Roman Kadaj, Zdzisław Kowalczyk, Danuta Leśniewska, Marek Łagoda, Bogusława Łapczyńska-Kordon, Artur Olszewski, Leszek Osiecki, Janusz Podleśny, Leonard Runkiewicz, Bogdan Stefanowicz, Edwin Wnuk, Jerzy Zielnica

Changes in the Mechanical Properties of the Greenhouse Tomato Fruit Skins During Storage

Authors: Bożena Gładyszewska, Anna Ciupak
Keywords: tomato skin, storage period, Young’s modulus, Poisson’s ratio
Article

Comparison of Combustion Gas Emission by Low Power Boilers Fired by Biomass Obtained from Wood - Pellets

Authors: Jacek Bieranowski, Tomasz Olkowski
Keywords: wood derived biomass, combustion gas composition, emissivity of low power boilers, furnace structure
Article

Airflow Modeling in a Grain Silo

Author: Ryszard Myhan
Keywords: silo, airflow, distribution of airflow velocity, discretization, model, process simulation
Article

The Determination of Apples Bruise Resistance by the Multiple Impact Method

Authors: Krzysztof Gołacki, Paweł Rowiński, Zbigniew Stropek
Keywords: ruise resistance, impact, apple
Article

Hydro- and Lithodynamic Aspects of Constructing a Navigable Canal Through the Vistula Spit

Author: Leszek M. Kaczmarek
Keywords: the Vistula Spit, the Vistula Lagoon, cutting, navigable canal, fairway, breakwater, sediment transport, silting up of fairways, changes in the shoreline, non-homogenous sediments
Article

Aspects of Designing Education Buildings in a Conservation Area: A Case Study of a Building Designed for the School of Civil Engineering at the University of Warmia and Mazury in Olsztyn

Author: Marek Zagroba
Keywords: architecture, urbanism, building permit design, spatial composition, conservation
area, campus, Kortowo
Article

Effective Lengths of Reinforced Concrete Columns in Single-Storey Frame Structures in the Light of the Eurocode

Authors: Michał Knauff, Krzysztof Klempka
Keywords: effective length of column, method based on nominal stiffness, second order effects, reinforced concrete buildings, reinforced concrete structures
Article

Determination of Internal Forces in End Plates of Simple End Plate Joints

Authors: Stefan Dominikowski, Piotr Bogacz
Keywords: end plate joints, internal forces, end plate
Article

Aspects of Cost-Estimate for Construction Work in Listed Buildings

Authors: Jacek Zabielski, Piotr Bogacz
Keywords: listed buildings, renovation work, owner/client cost estimate, public contracts
Article

Selected Accelerations and Orbital Elements of the Goce Satellite in the Time Domain

Author: Andrzej Bobojć
Keywords: GOCE satellite orbit, satellite accelerations, orbital elements, geopotential
Article

Assessment of Accuracy of EGM08 Model Over the Area of Poland

Author: Adam Łyszkowicz
Keywords: EGM08, quasigeoid heights, ellipsoidal heights, normal heights
Article

Geodetic Application of R-Estimation - Levelling Network Examples

Author: Robert Duchnowski
Keywords: R-estimation, levelling network
Article

Relational Database of Three Precise Levelling Campaigns in Poland

Authors: Kamil Kowalczyk, Michał Bednarczyk
Keywords: data base, levelling network
Article

Analysis of Compilation Technology of Digital Terrain Model Based on Satellite, Tacheometric and Photogrametric Data

Author: Katarzyna Pająk
Keywords: Digital Terrain Model, GPS, RTK method
Article

Enterprise Architect and Magic Draw UML — Comparing the Abilities of Case Tools

Author: Halina Tańska
Keywords: UML, CASE tools, the process of creating software, the criteria of evaluating CASE tools
Article

Numerical Aspects of a Pneumatic Tyre Model Analysis

Author: Józef Pelc
Keywords: tyre, computational code, finite element method, block diagram, deformation, strength
Article

Algorithms Applied in Turbomachine Modeling with Variable Input Data

Author: Paweł Pietkiewicz
Keywords: modeling, heuristic, rotor, bearing
Article

Typical Failures of Gear Pumps. Defects Classification

Author: Paweł Pietkiewicz
Keywords: gear pumps, symptom, defect, diagnostic relations
Article

Development of the Foil Bearing Technology

Authors: Krzysztof Nalepa, Paweł Pietkiewicz, Grzegorz Żywica
Keywords: foil bearings, journal bearings, bearing systems, microturbines
Article

Modeling Foil Bearings

Authors: Wojciech Miąskowski, Paweł Pietkiewicz, Grzegorz Żywica
Keywords: foil bearing, modelling foil bearings
Article

Foil Micro-Bearing Tests

Wojciech Miąskowski, Krzysztof Nalepa, Grzegorz Żywica
foil bearing, high-speed machines bearings, bearing systems testing
Article

Numerical Analysis of Flow Bifurcations in a Closed-Off Channel

Author: Wojciech Sobieski
Keywords: bifurcation, fluid flow, CFD
Article

Numerical and Experimental Analyses of Hopf Bifurcations in a Locally Expanded Channel

Author: Wojciech Sobieski
Keywords: Hopf bifurcations, CFD
Article