Results 21 to 30 of about 46,598 (287)

Extended-range luminescence chronologies for the Middle Pleistocene units at the Sima del Elefante archaeological site (Sierra de Atapuerca, Burgos, Spain)

open access: yesQuaternary Geochronology, 2022
The Sima del Elefante site is located within the Sierra de Atapuerca karst system (Burgos, northern Spain), and forms part of a series of important Early, Middle and Late Pleistocene archaeological complexes that have been dated previously with ...
M. Demuro   +8 more
semanticscholar   +1 more source

Evaluation of microstructure and mechanical properties of M-SIMA processed Al–7Si alloy

open access: yesMaterials Science and Technology, 2022
In this research article, the effect of the strain-induced melt activation (SIMA) process on the microstructure and mechanical properties of the Al–7Si alloy has been investigated. The morphology of α-Al grains is changed from dendritic to fine spherical
C. Choudhary   +3 more
semanticscholar   +1 more source

Perancangan Website Masyarakat Peduli Sampah Kelurahan Ratu Sima

open access: yesJurnal Penelitian Dan Pengkajian Ilmiah Eksakta, 2022
Seeing the importance of an information managed by the kelurahan part, which called as the community who cares about garbage where it is very difficult for people to get information about waste in the Ratu Sima subdistrict.
S. Ramadhan, Siti Ramadhani, Tomi Z
semanticscholar   +1 more source

High-Temperature Compressive Resistance and Mechanical Properties Improvement of Strain-Induced Melt Activation-Processed Al-Mg-Si Aluminum Alloy

open access: yesMetals, 2016
Even though the high-temperature formability of Al alloys can be enhanced by the strain-induced melt activation (SIMA) process, the mechanical properties of the formed alloys are necessary for estimation.
Chia-Wei Lin   +2 more
doaj   +1 more source

General Wang Dun and His Rebellion Against the Eastern Jin Dynasty [PDF]

open access: yesГуманитарный вектор, 2020
The article provides brief information about the rebellious aristocratic general Wang Dong against the ruling clan of Sima in the person of Sima Rui (years of life 276–323 AD, years of rule 318–323 AD), the first emperor of Eastern Jin, as well as ...
Chingis Ts. Tsyrenov
doaj   +1 more source

Echolocation click parameters and biosonar behaviour of the dwarf sperm whale (Kogia sima)

open access: yesJournal of Experimental Biology, 2021
Dwarf sperm whales (Kogia sima) are small toothed whales that produce narrow-band high-frequency (NBHF) echolocation clicks. Such NBHF clicks, subject to high levels of acoustic absorption, are usually produced by small, shallow-diving odontocetes, such ...
C. Malinka   +6 more
semanticscholar   +1 more source

Decision-Making System Based on a Fuzzy Hierarchical Analysis Process and an Artificial Neural Network for Flow Shop Machine Scheduling Model Under Uncertainty

open access: yesIEEE Access, 2021
The management of the uncertainty existing in any production system is fundamental to define machine scheduling models that allow programming production instances attached to the real world.
Luis Fernando Villanueva-Jimenez   +4 more
doaj   +1 more source

The Construction of Internal Control System of SimaVillage in Majapahit Empire Based on Jedong Inscription IX-X

open access: yesJABE (Journal of Accounting and Business Education), 2018
This study aims to understand how internal control system in Sima village in Majapahit Empire was built based on Jedong Inscription IX-X. This research is a case study employing historical approach through interpretation of interviews, observation, and ...
Ragil Satrio   +2 more
doaj   +1 more source

The Comparison of Effects of Ultrasonic Treatment, SIMA Process and Al-5Ti-1B Grain Refiner on the Microstructure and Mechanical Properties of Al–15%Mg2Si in-situ Composite [PDF]

open access: yesIranian Journal of Materials Science and Engineering, 2023
The effect of Strain-Induced Melt-Activated (SIMA) Process, ultrasonic treatment (UST) and Al-5Ti-1B refiner on the microstructure and globularity of Al–15%Mg2Si composite was studied. Deformation of 25% were used.
Mohammad Alipour
doaj  

Effect of compression ratio on microstructure evolution of Mg–10%Al–1%Zn–1%Si alloy prepared by SIMA process

open access: yesTransactions of Nonferrous Metals Society of China, 2021
A new Mg–10%Al–1%Zn–1%Si alloy with non-dendritic microstructure was prepared by strain induced melt activation (SIMA) process. The effect of compression ratio on the evolution of semisolid microstructure of the experimental alloy was investigated.
Li-jie Cao   +4 more
semanticscholar   +1 more source

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