Results 11 to 20 of about 23,086 (153)

Combustion and Pyrolysis EA-IRMS Techniques to Determine the δ²H of Diamonds. [PDF]

Rapid Commun Mass Spectrom
ABSTRACT Rationale Diamonds are generally considered to be metasomatic minerals originating from the Earth's mantle. They formed through the interaction of carbon‐bearing fluids or melts with the surrounding deep lithology. Most knowledge about the formation of diamonds comes from studying their mineral inclusions or stable isotopes.
Fourel F, Lécuyer C, Thomassot E, Deloule E, Ojeimi C.   +4 more
europepmc   +2 more sources

Depositional Structures and Their Reservoir Characteristics in the Wufeng–Longmaxi Shale in Southern Sichuan Basin, China

Energies, 2022
This paper documents depositional structures and their reservoir characteristics in the Wufeng–Longmaxi shale from outcrops and cores using thin sections, X-ray powder diffraction (XRD) analysis, carbon–sulfur analyzer, helium porosimeter, decay ...
Zhensheng Shi, Tianqi Zhou, Hongyan Wang, Shasha Sun   +3 more
doaj   +1 more source

Magnetic field stabilization for high-accuracy mass measurements on exotic nuclides [PDF]

, 2007
The magnetic-field stability of a mass spectrometer plays a crucial role in precision mass measurements. In the case of mass determination of short-lived nuclides with a Penning trap, major causes of instabilities are temperature fluctuations in the ...
A. Herlert, Anderson, Bergström, Blaum, Blaum, Blaum, Bollen, Bollen, Bollen, Bollen, Bollen, Bollen, Bradley, Brown, Brunner, C. Yazidjian, Cornell, Eronen, Gabrielse, George, George, Gräff, Hardy, Herfurth, Herfurth, J. Alonso, K. Blaum, Kellerbauer, Kellerbauer, Kiong, Kugler, König, L. Schweikhard, Lunney, M. Dworschak, M. Marie-Jeanne, Mukherjee, Natarajan, Preston-Thomas, R. Savreux, Raimbault-Hartmann, S. Djekic, S. Stahl, Savard, Savard, Sz. Nagy, U. Hager, Van Dyck, Van Dyck, Yazidjian, Ziegler   +50 more
core   +2 more sources

Comprehensive potential analysis and development suggestions of old gas fields in Sichuan Basin in the later stage of development: A case from Sinian gas reservoir in W gas field

Youqicang pingjia yu kaifa, 2022
After more than 50 years of exploration and development, W gas field in Sichuan Basin is faced with large remaining geological reserves and great development potential.
HU Hao, ZHOU Hong, LONG Hui, FAN Tianyou, WU Hongbo, WU Ya, WANG Min, YANG Tongshui   +7 more
doaj  

D/H ratios of the inner Solar System [PDF]

, 2017
The original hydrogen isotope (D/H) ratios of different planetary bodies may indicate where each body formed in the Solar System. However, geological and atmospheric processes can alter these ratios through time.
Hallis, Lydia
core   +1 more source

Molecular structure and nickel-binding capacity of Proteus mirabilis UreE. [PDF]

Acta Crystallogr D Struct Biol
This study presents a 2.0 Å resolution crystal structure and determined the nickel‐binding capacity of the P. mirabilis nickel chaperone UreE. UreE is essential for the delivery of nickel to the metalloenzyme urease, which is key for the ability of P. mirabilis to cause urinary‐tract infections.UreE is a nickel chaperone that is required for the safe ...
Pan J, Mueller SL, Tasneem N, Wu Y, Furlong EJ.   +4 more
europepmc   +2 more sources

Paleoenvironment, Geochemistry, and Pore Characteristics of the Postmature to Overmature Organic-Rich Devonian Shales in Guizhong Depression, Southwestern China

Geofluids, 2021
Investigating shale pore characteristics has deepened our understanding of shale reservoir, while that of postmature-overmature shales is yet to be revealed, which is especially critical for shale gas evaluation in southern China.
Yanqi Zhang, Li Liu, Changxi Geng, Zhuang Cheng, Xinxin Fang   +4 more
doaj   +1 more source

The Role of Chemistry Across Disciplines From Humanities to Life Sciences in Understanding Complexity and Emergence

Angewandte Chemie, EarlyView.
This study explores the origins of life by linking prebiotic chemistry, the emergence of information‐carrying molecules such as RNA and proteins, and philosophical questions about consciousness. The study emphasizes the role of molecular evolution in the Central Dogma and provides insights into the chemical origins of biology and the basis of life's ...
Harald Schwalbe, Josef Wachtveitl, Alexander Heckel, Florian Buhr, Sabrina Toews, Thomas M. Schimmer   +5 more
wiley   +2 more sources

142Nd/144Nd Inferences on the nature and origin of the source of high 3He/4He magmas [PDF]

, 2017
High-precision measurements of 142Nd/144Nd in picrites from the Baffin Bay region that contain the highest 3He/4He ratios yet measured in terrestrial mantle-derived rocks are indistinguishable from the value measured in the terrestrial standard and other
Carlson, R.W., de Leeuw, G.A.M., Ellam, R.M., Stuart, F.M.   +3 more
core   +1 more source

Changes in hydrodynamic, structural and geochemical properties in carbonate rock samples due to reactive transport [PDF]

, 2017
Reactive transport plays an important role in the development of a wide range of both anthropic and natural processes affecting geological media. To predict the consequences of reactive transport processes on structural and hydrodynamic properties of a ...
Carrera Ramírez, Jesús, Luquot, Linda, Martínez Pérez, Laura   +2 more
core   +2 more sources