Results 41 to 50 of about 36,058 (246)

Analysis of Maintenance Activities in Oil Lubrication Refinery Using Statistical Techniques [PDF]

open access: yesEngineering and Technology Journal, 2015
In this research the maintenance activities isinvestigated for lube oil factory (3) as this factory is the newest and largest in its production capacity compared to lube oil factories (1) and (2)at Daura refineries.Data of different equipment’s failure ...
Lamyaa M. Dawwod   +2 more
doaj   +1 more source

Pengembangan Sistem Berbasis Pengetahuan untuk Pengendalian Kualitas pada Proses Frontune Produk Infrared (Studi Kasus pada PT Perkin Elmer Optoelektronics Batam) [PDF]

open access: yes, 2003
SBPPK (sistem berbasis pengetahuan untuk pengendalian kualitas) is a knowledge based system which using human knowlwdge that being planted in computer to help solving problem that needs special skill or expertise.
Hisjam, Muh.   +2 more
core  

Antioxidant activity of thyme waste extract in O/W emulsions [PDF]

open access: yes, 2019
Thymus vulgaris (thyme) is an aromatic plant and its essential oil has been applied as antimicrobial and antioxidant due to the presence of phenolic compounds.
AAZZA, Smail   +8 more
core   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

open access: yesAdvanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Investigation of Shrinkage Defect in Castings by Quantitative Ishikawa Diagram

open access: yesArchives of Foundry Engineering, 2017
Metal casting process involves processes such as pattern making, moulding and melting etc. Casting defects occur due to combination of various processes even though efforts are taken to control them.
Chokkalingam B.   +4 more
doaj   +1 more source

ANALISIS PENGENDALIAN KUALITAS UNTUK MENGENDALIKAN PRODUK CACAT DENGAN MENGGUNAKAN SEVEN TOOLS (Studi pada PT. Mazebah Saroha - Jakarta) [PDF]

open access: yes, 2016
Problems that often occurred on PT. Mazebah Saroha are significant number of costs from defective products that resulting waste. This study aims to help the company in achieving standard quality that has already been defined and decrease waste from ...
JONATHAN , Moses David   +1 more
core  

Energy Consumption Optimization in Trajectory Planning for Fuel Cell Hybrid Uavs Based On HMPC

open access: yesAdvanced Robotics Research, EarlyView.
The endurance limitation of multirotor drones is a critical challenge. This study adopts a hybrid power system of fuel cells and lithium‐ion batteries. Using Nondominated Sorting Genetic Algorithm II, it integrates trajectory planning with energy management optimization.
Xindi Wang   +7 more
wiley   +1 more source

Empirical Evaluation of Mutation-based Test Prioritization Techniques

open access: yes, 2018
We propose a new test case prioritization technique that combines both mutation-based and diversity-based approaches. Our diversity-aware mutation-based technique relies on the notion of mutant distinguishment, which aims to distinguish one mutant's ...
Bae, Doo-Hwan   +3 more
core   +2 more sources

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

open access: yesAdvanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui   +5 more
wiley   +1 more source

Enhancing quality in plastic manufacturing: Six sigma application to polybox containers

open access: yesOPSI
Historical production data from November 2021 to February 2022 revealed that polybox plastic containers suffered from a 2.84% defect rate, exceeding the company’s 2% threshold.
Nadia Nabila Priyanti   +2 more
doaj   +1 more source

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