Results 51 to 60 of about 504,034 (304)

Automatic inversion of fracture parameters in tight gas reservoirs based on gas production profile [PDF]

Youqicang pingjia yu kaifa
Accurately determining hydraulic fracture parameters is crucial for guiding the design of fracturing treatments and predicting single-well production.
XIAO Honglin, BU Chunliang, HOU Fu, TANG Huiying, WANG Yiyun, LUO Shangui
doaj   +1 more source

Trailer shield assembly for a welding torch [PDF]

, 1989
This invention relates generally to trailer shields for gas shielded arc welding torches, and more particularly to a trailer shield assembly provided with a shield gas manifold for providing an even dispersion of shield gas to the interior of the shield ...
Dyer, Gerald E.
core   +1 more source

Controlling the quantum stereodynamics of ultracold bimolecular reactions

, 2010
Chemical reaction rates often depend strongly on stereodynamics, namely the orientation and movement of molecules in three-dimensional space. An ultracold molecular gas, with a temperature below 1 uK, provides a highly unusual regime for chemistry, where
A Gijsbertsen, A Kastberg, A Micheli, A Micheli, A. Chotia, B Capogrosso-Sansone, B DeMarco, B. Neyenhuis, C Ticknor, D. S. Jin, D. Wang, DS Petrov, DW Wang, ER Meyer, G Pupillo, G Quéméner, G Quéméner, G Quéméner, G. Quéméner, HP Büchler, J Aldegunde, J Stuhler, J. L. Bohn, J. Ye, JN Byrd, K-K Ni, K-K Ni, LD Carr, M Baranov, M Greiner, M Klawunn, M. H. G. de Miranda, PS Zuchowski, RN Zare, RV Krems, S Ospelkaus, S Ospelkaus, S Ospelkaus, S. Ospelkaus, T Lahaye, Z Idziaszek, Z Li   +41 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Geochemical Characteristics and Origin of Tight Gas in Member Two of the Upper Triassic Xujiahe Formation in Western Sichuan Depression, Sichuan Basin, SW China

Frontiers in Earth Science, 2022
Natural gas in the tight sandstone reservoirs in Member two of the Upper Triassic Xujiahe Formation in the Western Sichuan Depression of the Sichuan Basin has complex geochemical characteristics, and the origin and source of the tight gas are revealed ...
Xiaoqi Wu, Xiaoqi Wu, Quanyou Liu, Quanyou Liu, Yingbin Chen, Yingbin Chen, Jun Yang, Jun Yang, Huasheng Zeng, Huasheng Zeng, Huaji Li   +10 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

The Far-Infrared, UV and Molecular Gas Relation in Galaxies up to z=2.5

, 2012
We use the infrared excess (IRX) FIR/UV luminosity ratio to study the relation between the effective UV attenuation (A_IRX) and the UV spectral slope (beta) in a sample of 450 ...
Berta, S., Genzel, R., Lutz, D., Magnelli, B., Nordon, R., Poglitsch, A., Popesso, P., Rosario, D., Saintonge, A., Schreiber, N. M. Forster, Sturm, E., Tacconi, L. J., Wuyts, S.   +12 more
core   +1 more source

Hippo pathway at the crossroads of stemness and therapeutic resistance in breast cancer

Molecular Oncology, EarlyView.
Dysregulation of the Hippo pathway drives nuclear accumulation of YAP/TAZ, activating stemness‐related transcriptional programs that sustain breast cancer stemness and fuel therapeutic resistance across subtypes, underscoring Hippo signaling as a targetable vulnerability. Figure created and edited with BioRender.com.
Giulia Schiavoni, Antonella Palmese, Stefano Scalera, Laura Cipriani, Davide Mascolo, Patrizia Vici, Teresa Arcuri, Lorena Filomeno, Eriseld Krasniqi, Giovanni Blandino, Giulia Bon, Marcello Maugeri‐Saccà   +11 more
wiley   +1 more source

Pore characteristics of clay minerals in the Qingshankou shale,Songliao Basin, China: unravelling the effects of illitization

Frontiers in Earth Science
IntroductionClay minerals are critical components of lacustrine shale systems, where their associated pores govern reservoir properties. The diagenetic transformation of these minerals, particularly illitization, profoundly impacts reservoir quality, yet
Xiaohua Jiang, Xiaohua Jiang, Xiaohua Jiang, Rukai Zhu, Rukai Zhu, Rukai Zhu, Songtao Wu, Songtao Wu, Songtao Wu, Jingya Zhang, Jingya Zhang, Jingya Zhang, Zhichao Yu, Zhichao Yu, Modi Guan, Modi Guan, Lihua Ding, Lihua Ding   +17 more
doaj   +1 more source

Formation condition of deep gas reservoirs in tight sandstones in Kuqa Foreland Basin

Petroleum Research, 2018
Due to the high expense of deep oil and gas exploration, prediction of gas-bearing properties before drilling is crucial for deep gas reservoir of tight sandstone. Deep tight sandstone gas fields in Kuqa Foreland Basin are characterized by high abundance,
Xuesong Lu, Mengjun Zhao, Keyu Liu, Qingong Zhuo, Junjia Fan, Zhichao Yu, Yanjie Gong   +6 more
doaj   +1 more source