Results 21 to 30 of about 1,586,861 (165)

Sintering and Properties of W-25% Re Composition for Sermet Fuel Production by Spark Plasma Method

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi, 2019
In this study, the sintering of tungsten metal powders of 99.99% purity and 7.8 µm for cermet production by Spark Plasma Sintering (SPS) method at temperatures between 1300°C and 1700°C for 5 minutes, 10 minutes, 20 minutes and 30 minutes was ...
Hüseyin ADANIR
doaj   +1 more source

SUMMER POPULATION OF BATS IN PROTECTED AREAS AND THEIR SURROUNDINGS IN THE EAST OF FENNOSCANDIA

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2020
The eastern outskirts of Fennoscandia harbour two protected areas – Vodlozersky and Kenozersky national parks. They are relatively close to each other and occupy vast taiga territories in the Republic of Karelia and the Arkhangelsk Region.
Vladimir Belkin   +2 more
doaj   +1 more source

Density Relative to a Torsion Theory [PDF]

open access: yesProceedings of the American Mathematical Society, 1981
If ( ℑ , F ) (\Im , \mathcal {F}) is a torsion theory on Mod R R , then a ring B B of biendomorphisms of a ℑ \Im -cocritical module is topologized. Moreover, if a certain factor module of R R is quasi-projective, a
Bland, Paul, Riley, Stephen
openaire   +1 more source

The selection and use method of sandy ground compaction

open access: yesИнженерно-строительный журнал, 2014
The article presents the research results on the choice of a method and main parameters of the deep vibrating compaction of sandy fill soil in foundations and practical experience data on large-scale testing of their main provisions in the natural ...
O.P. Minaev
doaj   +1 more source

Relative modulus–relative density relationships in low density polymer–clay nanocomposite foams

open access: yesSoft Matter, 2011
Polymer–clay nanocomposite (PCN) foams represent an important class of new materials in structural engineering, biomedical fields and packaging. This paper reports the relative modulus–relative density relationship, a crucial correlation in cellular solids, for low-density PCN foams. Polyurethane (PU)–natural clay nanocomposite foams with a porosity of
Istrate, Oana M., Chen, Biqiong
openaire   +5 more sources

The Effects of Sintering Temperature and Pressure on the Sintering Behavior of Hydroxyapatite Powder Prepared by Spark Plasma Sintering

open access: yesJournal of Biomechanical Science and Engineering, 2008
The sintering behaviors and resulting properties of hydroxyapatite (HA) were studied by employing Spark plasma sintering (SPS) process. An As-received HA powder was sintered and the sintering pressure was set as 22.3MPa, 44.6MPa and 66.9MPa respectively.
Shufeng LI   +3 more
doaj   +1 more source

Improvement of Short-Circuit Tolerance of Garnet Type Solid Electrolyte Li6.4La3Zr1.4Ta0.6O12 by Li2WO4 and Al2O3 Sintering Aids and La Deficiency

open access: yesElectrochemistry
Garnet-type Li6.4La3Zr1.4Ta0.6O12 (LLZT) is one of the most promising solid electrolytes for all solid-state batteries due to its relatively high Li-ion conductivity and electrochemical stability against Li metal anode. However, the presence of pores and
Yuya KONO   +7 more
doaj   +1 more source

Correlation of Energy Density and Manufacturing Variables of AA6061 through Laser Powder Bed Fusion and Its Effect on the Densification Mechanism

open access: yesMetals, 2023
Aluminum alloy processing via additive manufacturing (AM) technologies has increased in usage during the last decade. AM now enables manufacturing complex geometries not previously achieved through traditional manufacturing. Aluminum is usually processed
Catalina Jaramillo-Isaza   +4 more
doaj   +1 more source

DENSIFICATION AND MECHANICAL PROPERTIES OF FEMN13-TiC COMPOSITES FABRICATED BY PULSED ELECTRIC CURRENT SINTERING PROCESS

open access: yesActa Metallurgica Slovaca, 2018
In the present work, FeMn13-40 wt.% TiC composites was fabricated by pulsed electric current sintering (PECS) process at different temperatures between 990 and 1020°C under a pressure of 60 MPa with a holding time of 5 min in the vacuum.
Khanh Quoc Dang   +6 more
doaj   +1 more source

Partitioning Graph Clustering With User-Specified Density

open access: yesIEEE Access, 2023
Graph clustering has attracted many interests in recent years, with numerous applications ranging from the clustering of computer networks to the detection of social communities.
Rohi Tariq   +3 more
doaj   +1 more source

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