Autor: Abbas, W. S. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Study of solidification behaviour and mechanical properties of arc stud welded AISI 316L stainless steel
Autorzy:: Abass, M. H.
Alali, M. S.
Abbas, W. S.
Shehab, A. A.
Powiązania:: https://bibliotekanauki.pl/articles/367964.pdf
Data publikacji:: 2019
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: arc stud welding
AISI 316L stainless steel
solidification mode
solidification cracking
second phase
spawanie łukowe
stal nierdzewna AISI 316L
model krzepnięcia
druga faza
Opis:: Purpose: This paper aims to investigate the impact of arc stud welding (ASW) process parameters on the microstructure and mechanical properties of AISI 316L stainless steel stud/plate joint. Design/methodology/approach: The weld performed using ASW machine. The influence of welding current and time on solidification mode and microstructure of the fusion zone (FZ) was investigated using optical microscope and scanning electron microscope (SEM). Microhardness and torque strength tests were utilised to evaluate the mechanical properties of the welding joint. Findings: The results showed that different solidification modes and microstructure were developed in the FZ. At 400 and 600 A welding currents with 0.2 s welding time, FZ microstructure characterised with single phase austenite or austenite as a primary phase. While with 800 A and 0.2 s, the microstructure consisted of ferrite as a primary phase. Highest hardness and maximum torque strength were recorded with 800 A. Solidification cracking was detected in the FZ at fully austenitic microstructure region. Research limitations/implications: The main challenge in this work was how to avoid the arc blow phenomenon, which is necessary to generate above 300 A. The formation of arc blow can affect negatively on mechanical and metallurgical properties of the weld. Practical implications: ASW of austenitic stainless steel are used in multiple industrial sectors such as heat exchangers, boilers, furnace, exhaust of nuclear power plant. Thus, controlling of solidification modes plays an important role in enhancing weld properties. Originality/value: Study the influence of welding current and time of ASW process on solidification modes, microstructure and mechanical properties of AISI 316 austenitic stainless steel stud/plate joint.
Źródło:: Journal of Achievements in Materials and Manufacturing Engineering; 2019, 97, 1; 5-14
1734-8412
Pojawia się w:: Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Methodology of geodetic surveying for construction in accordance with international standardization
Autorzy:: Pawłowski, W.
Abbas, S.
Powiązania:: https://bibliotekanauki.pl/articles/225390.pdf
Data publikacji:: 2009
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: Międzynarodowa Organizacja Normalizacyjna
ISO
budownictwo
norma
International Organization for Standardization
architecture
standard
Opis:: Geodetic surveying plays a very important role in modern-day construction. Surveying methodology, including the methods and surveying instruments, their compliance with certain requirements as to the scope and accuracy of the conducted measurements, is the subject of normative regulations recognized by the International Organization for Standardization (ISO).
Źródło:: Reports on Geodesy; 2009, z. 2/87; 317-323
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Cyclic observations of geometric structure of a building construction in hazardous conditions and construction works carried out in its immediate vicinity
Autorzy:: Abbas, S.
Pawłowski, W.
Powiązania:: https://bibliotekanauki.pl/articles/225497.pdf
Data publikacji:: 2011
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: pomiary geodezyjne
Prawo budowlane
measurements
Construction law
Opis:: A measuring work carried out in engineering surveying for construction industry purposes apply to building facilities within the meaning of the Act, "Construction Law", in the following situations: a) at the construction stage - as-built and post-completion surveying; b) during their use - mainly for specialized expertise performed under a periodic assessment of technical status of the object or when symptoms such cracks, scratches, excessive deflection or buckling of structural elements which pose a threat to its safe use; c) surveying of objects in whose vicinity works are carried out towards thier development, which may pose a threat to the stability of thier geometrical structure, particularly concerning objects situated on weak and / or heterogeneous soil.
Źródło:: Reports on Geodesy; 2011, z. 1/90; 9-16
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The prospective innovator in public university by scrutinizing particular personality traits
Szczegółowe badanie cech personalnych jako innowator dla uniwersytetów publicznych
Autorzy:: Abbas, E. W.
Hadi, S.
Rajiani, I.
Powiązania:: https://bibliotekanauki.pl/articles/405428.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Częstochowska
Tematy:: five-factor personality
innovation
public sector
Indonesia
pięcioczynnikowa osobowość
innowacja
sektor publiczny
Indonezja
Opis:: The administrative process innovation was adopted with enthusiasm by the Western advanced industrialized countries and was taken for granted as a superior approach that should be practiced. However, public organizations in Indonesia are structured and run differently making public sector employees may have different views toward new ways of doing the job. This article aims to reveal who innovates in the organization by analyzing typical personality traits. The hypotheses are tested through a sample of 200 employees of public universities located in South Kalimantan, Indonesia, and structural equation modeling is used. Applying Hogan Personality Inventory (HPI), the five-factor personality in this research is labeled as adjustment (neuroticism), sociability (extraversion), likeability (agreeableness), prudence (conscientiousness), and school success (openness to experience). The results are discussed regarding the implications for what one can learn from individual-level studies of personality and innovation. Suggestions are offered to those universities interested in encouraging service quality in the public sector via innovation.
Innowacje w procesie administracyjnym zostały przyjęte z entuzjazmem przez zachodnie zaawansowane kraje uprzemysłowione i uznano je za oczywiste, jako nadrzędne podejście, które powinno być praktykowane. Jednak organizacje publiczne w Indonezji są zorganizowane i działają w różny sposób, sprawiając, że pracownicy sektora publicznego mogą mieć różne poglądy na nowe sposoby wykonywania pracy. Niniejszy artykuł ma na celu ujawnienie, kto wprowadza innowacje w organizacji, analizując typowe cechy osobowości. Hipotezy są testowane na próbie 200 pracowników uniwersytetów publicznych zlokalizowanych w południowym Kalimantan w Indonezji i wykorzystuje się modelowanie równań strukturalnych. Stosując Inwentarz Osobowości Hogana (HPI), pięcioczynnikowa osobowość określana jest, jako dostosowanie (neurotyczność), towarzyskość (ekstrawersja), sympatia (ugodowość), roztropność (sumienność) i sukces szkolny (otwartość na doświadczenie). Omówiono wyniki dotyczące konsekwencji, jakie można wyciągnąć z badań osobowości i innowacji na poziomie indywidualnym. Propozycje oferowane są uniwersytetom zainteresowanym promowaniem jakości usług w sektorze publicznym za pomocą innowacji.
Źródło:: Polish Journal of Management Studies; 2018, 18, 1; 9-19
2081-7452
Pojawia się w:: Polish Journal of Management Studies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Spatial distribution of early blight disease on tomato, climatic factors and bioefficacy of plant extracts against Alternaria solani
Autorzy:: Hussain, A.
Ali, S.
Abbas, H.
Ali, H.
Khan, S.W.
Powiązania:: https://bibliotekanauki.pl/articles/12689876.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:: Pakistan
plant cultivation
tomato
vegetable
climatic factor
bioefficacy
plant extract
plant pathogen
Alternaria solani
plant disease
blight
early blight
field survey
spatial distribution
spatial analysis
Geographic Information System
Opis:: Information on the spatial variability in plant disease is essential for location-based disease management. In the current study, the spatial distribution of tomato early blight disease was ascertained in District Gilgit, GilgitBaltistan, Pakistan. The comprehensive field survey was carried in two growing seasons (2014–2015), whereas in each growing season, 62 tomato fields were surveyed. Based on the distribution of disease, the respective thematic maps (incidence and severity) were prepared using Arc Map 10.1 with spatial analyst function of Arc GIS software by means of the inverse distance weight (IDW) interpolation method. Results indicate that early blight of tomato is spatially distributed in both growing seasons. However, in the first growing season, the disease incidence ranged from 10.22% to 44.16% and during later season 14.03–49.16%, whereas 5.37–16.40% and 6.52–26.94% severity was recorded. Furthermore, this information indicates that higher disease infestation occurred in 2015 in relation to 2014. This information linked to metrological data (temperature, precipitation and relative humidity), seemingly favored the early blight development during the growing period. Seven botanical extracts were tested against pathogen Alternaria solani at different concentrations (4, 6 and 8%). Results revealed that all tested plant extracts showed antifungal activities. However, at 8% concentration of plant extract, Datura starmonium, Berberis orthobotry, Podophyllum emodi and Uretica dioica exhibited >60%, while Peganum harmala, Artemisia maritima and Capparis spinosa <60% antifungal properties. The information generated due to this study could help the tomato growers regarding disease management and selection of resistant cultivars, improving profitability and food security in the Gilgit region.
Źródło:: Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 6; 29-38
1644-0692
Pojawia się w:: Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:: Biblioteka Nauki

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