Results 71 to 80 of about 2,507,328 (341)

ALMA observations of the molecular gas in the debris disk of the 30 Myr old star HD 21997 [PDF]

, 2013
The 30 Myr old A3-type star HD 21997 is one of the two known debris dust disks having a measurable amount of cold molecular gas. With the goal of understanding the physical state, origin, and evolution of the gas in young debris disks, we obtained CO ...
Apai, D., Csengeri, T., Grady, C. A., Henning, Th., Hughes, A. M., Juhász, A., Kiss, Cs., Kóspál, Á., Moór, A., Pascucci, I., Schmalzl, M., Ábrahám, P.   +11 more
core   +3 more sources

Thermoreflectance Detection of Point Defects Resulting from Focused Ion Beam Milling

Advanced Engineering Materials, EarlyView.
Focused ion beam (FIB) milling is a common tool for nanoscale material processing, however irradiation damage, redeposition, and contamination can occur. We use several characterization tools to show FIB‐induced effects beyond 1 mm from the milled area.
Thomas W. Pfeifer, Eric R. Hoglund, Anton V. Ievlev, Patrick E. Hopkins   +3 more
wiley   +1 more source

Multiobjective optimization of CO2 injection under geomechanical risk in high water cut oil reservoirs using artificial intelligence approaches

Scientific Reports
To obtain the maximum field oil recovery (FOR) and CO2 sequestration ratio (CSR), it is imperative to optimize the CO2 injection and liquid production rate. However, previous studies ignore the geomechanical risks indeed. Therefore, a hybrid optimization
Fankun Meng, Jia Liu, Gang Tong, Hui Zhao, Chengyue Wen, Yuhui Zhou, Vamegh Rasouli, Minou Rabiei   +7 more
doaj   +1 more source

All-Optical Production of a Degenerate Fermi Gas

, 2002
We achieve degeneracy in a mixture of the two lowest hyperfine states of $^6$Li by direct evaporation in a CO$_2$ laser trap, yielding the first all-optically produced degenerate Fermi gas. More than $10^5$ atoms are confined at temperatures below $4 \mu$
A. G. Truscott, B. DeMarco, D. A. Butts, E. Timmermans, F. Schreck, H. C. W. Beijerinck, H. T. C. Stoof, J. Bohn, J. E. Thomas, K. M. O'Hara, K. M. O'Hara, K. M. O'Hara, K. M. O'Hara, K. M. O'Hara, M. D. Barrett, M. E. Gehm, M. Holland, M. Houbiers, M. Houbiers, M. Randeria, R. Combescot, R. Jáuregui, S. Bali, S. Friebel, S. R. Granade, T. Takekoshi, W. Ketterle   +26 more
core   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Future meat consumption: potential greenhouse gas emissions from meat production in Malaysia [PDF]

This study shows that there is mounting meat consumption which is to be met by higher meat production. As the result, higher gas emission of CO2 is expected from increasing meat production.
Tey, (John) Yeong-Sheng
core   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

FLUID FLOW MODEL BASED ON THE ANALYSIS OF WATER INJECTION DATA IN THE TURONIAN RESERVOIR OF THE LIAWENDA FIELD, OFFSHORE COASTAL BASIN OF D.R. CONGO [PDF]

Romanian Journal of Petroleum & Gas Technology
Arranged the hydrocarbons in an oil reservoir require several techniques for their exploitation. The Liawenda field, discovered in December 1971 following the drilling of the Liawenda-01 exploration well, has a total of 186 wells with an annual ...
Munene Asidi Djonive, Kanika Mayena Thomas, Ndjanga Ndjondjo Pierre, Yakubu Jean-Pierre, Mbudi Diambu Shams, Iyolo Lungembo Jean, Kabuya Kalemba Faurysse, Lingwangasa Masaka Reddy, Ahumbila Bozo Patrick   +8 more
doaj   +1 more source

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

Advanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai, Xinrui Sarah Niu, Zhao Qin   +2 more
wiley   +1 more source

Investigation of Pore Structure of a Argillaceous Rocks Reservoir in the 5th Member of Xujiahe Formation in Western Sichuan, Using NAM, NMR and AIP-FESEM

Yankuang ceshi, 2017
Micropore is the effective reservoir for argillaceous rocks, and its structure parameter is the important parameter for the evaluation of gas reservoir and the estimation of the amount of resources.
PANG He-qing, ZENG Yan, LIU Cheng-chuan, LI Hua-ji, PENG Jun, YAN Huan-rong, CHEN Jun   +6 more
doaj   +1 more source