8 research outputs found
Ontwerp van een kademuur in de Brittanniëhaven in het Rotterdamse havengebied t.b.v. Seaport Terminals
No full textIn het kader van de eindstudie in de richting waterbouwkunde aan de afdeling der civiele techniek is dit verslag geschreven. Het doel van deze studie is een ontwerp te maken voor een kade constructie aan de westzijde van de Brittannie haven, waar container-schepen van 20.000 DWT kunnen aanleggen. De opbouw van dit rapport is als volgt: In hoofdstuk 2 zal een overzicht van de ontwikkeling van de kademuren in Rotterdam worden gegeven. De bedoeling is om een idee van de meest ideale kade constructie te geven. In hoofdstuk 5, 6,en 7 zal de berekening van de kade constructie die geschikt is voor de situatie in het gebied en aan het programma van eisen voldoet, te vinden zijn. De berekening betreft de grondkerende constructie,de bovenbouwen de fundering van de constructie. De situatie in het havengebied waar de kade constructie zal worden gebouwd.Hydraulic EngineeringCivil Engineering and Geoscience
Design and development of electrical impedance tomography system with 32 electrodes and microcontroller
No full textSuatu Konsep Tentang Stabilitas Serta Kemungkinan Penerapannya Dalam Analisa Sistem Pertanian. (Stability Concept and The Possibility of Its Application in Agticultural System Analysis)
No full textABSTRAK
This paper briefly describes the concept of stability, in which its mathematical theorems were developed by Liapunov some years ago in the field of electrical engineering.
Using a relatively simple mathematical model, the author tries to explain the possibility of its applications in agricultural system analysis.
Key words: Stabilitas, teori Liapuno
Entry words for Indonesian names
No full textCatalog is a representative of document and Entry Name is one of important part of catalog. For cataloguing purpose, Indonesian librarians used the Peraturan penentuan nama-nama Indonesia (Rules for Indonesian names) published by National Scientific Documentation Centre and recognized as the Indonesian National Standard, first published in 1975 and accepted as one of the Standar Nasional Indonesia or Indonesian National Standard. However it never been revised since its acceptance as a standard although the regulation stated that any standard must be revised every five years. The other cataloguing rule is "Peraturan katalogisasi nama-nama Indonesia" [Cataloging rules for Indonesian names] published by Pusat Pembinaan Perpustakaan (Center for Library Development) in 1976, later on continued by the Indonesian National Library as Peraturan katalogisasi Indonesia (Indonesian cataloguing rules), the last edition is the 4th edition published in 1996 and also never been revised since then. Owing to the different users, usage and dissemination, the "Peraturan penentuan nama-nama
Indonesia" is widely used among academic and special libraries as well as becoming the cataloguing standards at various library schools and cited by lecturers for entering
Indonesian names in their bibliographies. The author is speaking on behalf of The National Library of Indonesi
Characteristics microstructure and microhardness of cast Ti-6Al-4V ELI for biomedical application submitted to solution treatment
No full textAssessment of the psychometric properties of the Indonesian version of the General Self-Efficacy Scale-12 (GSES-12) in a sample of Indonesian high school students
No full textIn recent decades, self-efficacy has been one of the major subjects of interest in the field of psychology, with numerous studies published on the topic. This study aims to examine the psychometric features of the General Self-Efficacy Scale-12 (GSES-12), a widely used instrument for assessing general self-efficacy. The Indonesian adaptation of the GSES-12 was validated using item factor analysis (IFA). The study involved a total of 584 high school student participants (Mage = 16.02, SD-age = 1.39; boys = 266, girls = 318). The results obtained from the IFA indicate that the psychometric properties of the GSES-12 were satisfactory. The results exhibited a strong fit with the second-order IFA models and all items had statistically significant factor loadings. In addition, the results obtained from the multigroup IFA indicate that the configural invariance testing models exhibited a satisfactory level of goodness-of-fit (RMSEA 0.90). These findings suggest that there were no differences between the genders in the factor structure of the GSES-12. © The Author(s) 2023
Oxidation Behavior of AlxHfNbTiVY0.05 Refractory High-Entropy Alloys at 700–900 °C
No full textPublisher Copyright: © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.Refractory high-entropy alloys (RHEA) are considered as potential candidates for new-generation energy-related high-temperature applications. However, the poor high-temperature oxidation resistance of RHEAs, resulting in phenomena such as significant weight gain, scale spallation, pesting, and even complete oxidation, limits their applications. In this study, the oxidation behavior of AlxHfNbTiVY0.05 (x = 0.75; 1; 1.25) high-entropy alloys was investigated at 700–900 °C. The isothermal oxidation tests showed that the oxidation resistance of AlxHfNbTiVY0.05 RHEA is strongly influenced by temperature and time. In addition, accelerated oxidation, known as pesting, was observed to occur at 700 °C for all alloys; while, partial spallation was observed at 800 °C for the Al1 and Al1.25 alloys. Detailed analyses of oxidation kinetics have been carried out for the oxidation test series at 900 °C. The mechanism behind disintegration was investigated and attributed to accelerated internal oxidation followed by the formation of voluminous Nb2O5, TiNb2O7, and fast-growing AlNbO4, and is also thought to be related to the partial evaporation of V2O5.Peer reviewe
