Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Przemysław Dera"'
Publikováno v:
IUCrJ, Vol 9, Iss 1, Pp 146-162 (2022)
Pressure is well known to dramatically alter physical properties and chemical behaviour of materials, much of which is due to the changes in chemical bonding that accompany compression. Though it is relatively easy to comprehend this correlation in t
Externí odkaz:
https://doaj.org/article/c8d49be574e84789acfdb2452e7f6ec1
Publikováno v:
IUCrJ
IUCrJ, Vol 9, Iss 1, Pp 146-162 (2022)
IUCrJ, Vol 9, Iss 1, Pp 146-162 (2022)
Experimental and theoretical charge density investigations performed for langbeinite allow for detailed examination of the redistribution of electron density under pressure both within atomic basins as well as at atomic positions.
Pressure is we
Pressure is we
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 9, Pp n/a-n/a (2024)
Abstract Seismic tomography has shown that the shear wave velocities (Vs) under continents, especially under cratons, are extremely fast at 100–200 km depth, which is difficult to explain by low temperatures or high Mg#. Alternatively, delaminated
Externí odkaz:
https://doaj.org/article/f11069679edb4c62bc008171111843de
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 5, Pp n/a-n/a (2024)
Abstract Metasomatized mantle xenoliths containing hydrous minerals, such as amphiboles, serpentine, and phlogopite, likely represent the potential mineralogical compositions of the metasomatized upper mantle, where low seismic velocities are commonl
Externí odkaz:
https://doaj.org/article/004473c2ece7471db145394843b001b4
Autor:
David Blake, Valerie Tu, Thomas Bristow, Elizabeth Rampe, David Vaniman, Steve Chipera, Philippe Sarrazin, Richard Morris, Shaunna Morrison, Albert Yen, Robert Downs, Robert Hazen, Allan Treiman, Douglas Ming, Gordon Downs, Cherie Achilles, Nicholas Castle, Tanya Peretyazhko, David De Marais, Patricia Craig, Barbara Lafuente, Benjamin Tutolo, Elisabeth Hausrath, Sarah Simpson, Richard Walroth, Michael Thorpe, Johannes Meusburger, Aditi Pandey, Marc Gailhanou, Przemyslaw Dera, Jeffrey Berger, Lucy Thompson, Ralf Gellert, Amy McAdam, Catherine O’Connell-Cooper, Brad Sutter, John Michael Morookian, Abigail Fraeman, John Grotzinger, Kirsten Siebach, Soren Madsen, Ashwin Vasavada
Publikováno v:
Minerals, Vol 14, Iss 6, p 568 (2024)
For more than a decade, the CheMin X-ray diffraction instrument on the Mars Science Laboratory rover, Curiosity, has been returning definitive and quantitative mineralogical and mineral–chemistry data from ~3.5-billion-year-old (Ga) sediments in Ga
Externí odkaz:
https://doaj.org/article/30af12f114dd41538cbaa7fe64b32f49
Publikováno v:
Crystals, Vol 14, Iss 2, p 127 (2024)
Powder X-ray diffraction (XRD) is a widely accepted technique for detecting trace asbestos content in solid samples. However, accurately quantifying asbestos concentrations below 0.5 wt% presents significant challenges with XRD alone. To address this
Externí odkaz:
https://doaj.org/article/e179f87253424cb2be9897a403550ac7
Autor:
Michal L. Chodkiewicz, Roman Gajda, Barbara Lavina, Sergey Tkachev, Vitali B. Prakapenka, Przemyslaw Dera, Krzysztof Wozniak
Publikováno v:
IUCrJ, Vol 9, Iss 5, Pp 573-579 (2022)
Water is an essential chemical compound for living organisms, and twenty of its different crystal solid forms (ices) are known. Still, there are many fundamental problems with these structures such as establishing the correct positions and thermal mo
Externí odkaz:
https://doaj.org/article/107bff11c12b473f8d469d163a701d1d
Autor:
Anh Tuan Nguyen, Youlim Lee, Phuong Quang Hoang Nguyen, Przemyslaw Dera, Sang-Hee Yoon, Woochul Lee
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-7 (2022)
Abstract Understanding changes in material properties through external stimuli is critical to validating the expected performance of materials as well as engineering material properties in a controlled manner. Here, we investigate a change in the c-a
Externí odkaz:
https://doaj.org/article/35c1f35382a04e308d9e2a08d20511fe
Autor:
Godwin Severa, Edward Bruffey, Phuong Q. H. Nguyen, Angelina Gigante, Noemi Leick, Colleen Kelly, Gregory J. Finkelstein, Hans Hagemann, Thomas Gennett, Richard E. Rocheleau, Przemyslaw Dera
Publikováno v:
ACS Omega, Vol 6, Iss 47, Pp 31907-31918 (2021)
Externí odkaz:
https://doaj.org/article/5314c2c238a9444b8b16ab29e6eec02c
Autor:
Elena Boldyreva, Przemyslaw Dera
This book is devoted to the theme of crystallographic studies at high pressure, with emphasis on the phenomena characteristic to the compressed state of matter, as well as experimental and theoretical techniques used to study these phenomena. As a th