Results 91 to 100 of about 945,774 (394)

Quasi-static stationary-periodic model of percussive deep drilling [PDF]

, 2005
Copyright @ 2005 Patron EditoreIn the percussively deep drilling, the rock is modeled by an infinite elastic medium with a semi-infinite cylindrical bore-hole having a curvilinear bottom.
Mikhailov, SE, Namestnikova, IV
core  

Development and Preliminary In Vivo Study of 3D‐Printed Bioactive Glass Scaffolds with Trabecular Architecture

Advanced Engineering Materials, EarlyView.
This study reports the fabrication of trabecular bioactive glass scaffolds (composition “1d”: 46.1SiO2‐28.7CaO‐8.8MgO‐6.2P2O5‐5.7CaF2‐4.5Na2O wt%) through vat photopolymerization and the relevant results from mechanical testing and in vivo implantation procedures in rabbit femora, showing great promise for bone tissue engineering applications.
Dilshat Tulyaganov, Roberta Gabrieli, Avzal Akbarov, Nigora Nigmatova, Bekhzod Khabilov, Alessandro Schiavi, Martin Schwentenwein, Enrica Verné, Francesco Baino   +8 more
wiley   +1 more source

Research and Application of Precise Pipe Stand Handling Technique for Drill Floor Manipulator

Shiyou jixie
Precise pipe stand handling is challenge in the advancement of the drill floor manipulator. Depending on the structural features and field application of the manipulator， the factors influencing precise pipe stand handling were analyzed， revealing the ...
Zhao Liangliang, Ye Qiang, Wang Yaohua, Bai Bingjian, Hou Wenhu, Jiang Zhen, Luan Luyu   +6 more
doaj   +1 more source

Effective temperatures and luminosities of very hot o-type subdwarfs [PDF]

Twelve very hot O-type subdwarfs were observed with the IUE-satellite in the low dispersion mode. Temperatures were derived from the slopes of the UV continua and distances were estimated from the color excesses.
Drilling, J. S., Schoenberner, D.
core   +1 more source

Direct Recycling of Cold Work Tool Steel Swarf into New Cutting Disks via Field‐Assisted Sintering

Advanced Engineering Materials, EarlyView.
Through a sintering method known as field‐assisted sintering technology/spark plasma sintering, cold work tool steel swarf can be directly recycled into new cutting disks. This method is capable of densifying the unconventional powder morphology of swarf, and it can also seal grinding contaminants, such as Al2O3, into the steel matrix.
Monica Keszler, Felix Großwendt, Olivier Guillon, Sebastian Weber, Martin Bram   +4 more
wiley   +1 more source

The LSS 4300: A hot counterpart of Upsilon Sgr and KS Per? [PDF]

A number of observations indicate that the star LSS 4300 is a high temperature analog of the hydrogen-deficient binaries upsilon Sgr and KS Per. A preliminary model-atmosphere analysis based on high-dispersion spectra obtained at Kitt Peak and Cerro ...
Drilling, J. S., Schoenberner, D.
core   +1 more source

Host age selection behaviour of Trichogramma aurosum Sugonjaev & Sorokina (Hymenoptera: Trichogrammatidae) [PDF]

, 2004
Host age selection in several German strains of Trichogramma aurosum Sugonjaev & Sorokina was examined in laboratory choice tests under direct observation for 90 min., in order to select candidate strains for attempts at controlling the codling moth ...
Monje, J.C., Samara, R.Y., Zebitz, C.P.W.   +2 more
core  

Production of Metallic Foam Precursors Using Current‐Activated Pressure‐Assisted Densification

Advanced Engineering Materials, EarlyView.
A powder compaction metallurgical method, known as current‐activated pressure‐assisted densification, is applied to enhance the compaction of metal foam precursors. This method improves precursor quality by achieving higher density, lower electrical resistivity, and more uniform pore nucleation in the resulting foams, reducing energy consumption and ...
Tillmann Robert Neu, Paul Hans Kamm, Francisco García‐Moreno   +2 more
wiley   +1 more source

Health vulnerabilities of undocumented central and eastern European migrants in Switzerland

Journal of Migration and Health
Destitute Central and Eastern European migrants, including homeless people, beggars, and sex workers, are in a highly vulnerable position in Switzerland.
Zsolt Temesvary, Sabrina Roduit, Matthias Drilling   +2 more
doaj   +1 more source

In Situ Formation of a Melt‐Solid Interface Toward Stable Oxygen Reduction in Protonic Ceramic Fuel Cells

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
Protonic ceramic fuel cells offer a promising route to generate power efficiently but face critical challenges in achieving industrially viable activity and stability at their cathodes in CO2‐containing air. This report proposes a new cathode material design strategy to enable the cathode to be both catalytically active and CO2 tolerant through the ...
Desheng Feng, Mengran Li, Vanessa K. Peterson, Rijia Lin, Anita D'Angelo, Olexandra Marenych, Anya Yago, Dominique Appadoo, Tianjiu Zhu, Muhammad Yazid Bin Zulkifli, Shuai Gao, Yuming Wu, Xiaohe Tian, Xiaoyang Du, Zhonghua Zhu   +14 more
wiley   +1 more source