Results 71 to 80 of about 9,703,054 (246)

Pressure stabilizes ferrous iron in bridgmanite under hydrous deep lower mantle conditions

Nature Communications
Earth’s lower mantle is a potential water reservoir. The physical and chemical properties of the region are in part controlled by the Fe3+/ΣFe ratio and total iron content in bridgmanite.
Li Zhang, Yongjin Chen, Ziqiang Yang, Lu Liu, Yanping Yang, Philip Dalladay-Simpson, Junyue Wang, Ho-kwang Mao   +7 more
doaj   +1 more source

High-Pressure Preparation of High-Strength Wood Materials

Gaoya wuli xuebao
Mineral resources on Earth are finite, but wood is renewable. Therefore, replacing limited industrial materials with modified wood remains a long-term pursuit. This study processed samples of three wood types, including balsa (Ochroma lagopus), basswood (
Zi YE, Xuefeng ZHOU, Jianing XU, Chenglin ZHOU, Yi YANG, Linpeng ZHENG, Bin CHEN   +6 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Host-guest strategy for full-visible-spectrum piezochromism in halogen-bonded organic frameworks

Nature Communications
Full-visible-spectrum piezochromism is vital for advanced anti-counterfeiting and storage device applications, yet remains challenging. Polycyclic aromatic hydrocarbons represent a promising class of piezochromic materials.
Binhao Yang, Yixuan Wang, Jiaju Liang, Kaiyan Yuan, Ruidong Qiao, Tao Zhang, Xinyi Yang, Bo Zou   +7 more
doaj   +1 more source

In situ high-pressure spectroscopic studies using moissanite (4H-SiC) anvils

AIP Advances, 2018
We examined the Raman scattering and IR absorption spectroscopy of 4H-SiC and its performance as an anvil material for high-pressure UV-visible absorption spectroscopic measurements.
Jinbo Zhang, Xinli Zhao, Zhipeng Yan, Ye Yuan, Xin Li, Cuiying Pei, Haiyan Zheng, Lin Wang   +7 more
doaj   +1 more source

Investigation of acceptor levels and hole scattering mechanisms in p-gallium selenide by means of transport measurements under pressure

, 1997
The effect of pressure on acceptor levels and hole scattering mechanisms in p-GaSe is investigated through Hall effect and resistivity measurements under quasi-hydrostatic conditions up to 4 GPa.
A. Chevy, A. Segura, Conwell E. M., D. Errandonea, J. F. Sánchez-Royo, L. Roa, Mooser E., Segura A., Ulrich C., van der Pauw J. L.   +9 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

Pressure-driven crystal symmetry and carrier concentration optimization for superior thermoelectric transport properties in layered AgCrSe2 [PDF]

Matter and Radiation at Extremes
Phase engineering has proven to be an effective strategy for achieving superior thermoelectric performance, while pressure is an excellent means of expanding the phase space of a material. In this paper, the effect of pressure-induced phase transition on
Zheng Bi, Dianzhen Wang, Yiyang Zhou, Yang Gao, Jing Zou, Fuyang Liu, Qiang Tao, Bin Yang, Huijuan Yue, Luhong Wang, Haozhe Liu, Yan Li, Pinwen Zhu   +12 more
doaj   +1 more source

Using Low Pressure Sprayers [PDF]

, 1984
PDF pages:
Huber, Samuel G.
core  

Temperature - pressure phase diagram of CeCoSi: Pressure induced high-temperature phase

, 2013
We have studied the temperature-pressure phase diagram of CeCoSi by electrical-resistivity experiments under pressure. Our measurements revealed a very unusual phase diagram.
Caroca-Canales, N., Geibel, C., Lengyel, E., Nicklas, M.   +3 more
core   +1 more source