Results 181 to 190 of about 2,942 (252)

Raman spectroscopic analysis of carbonates on a CY-type carbonaceous chondrite Yamato 980115: unexpectedly abundant terrestrial weathering products. [PDF]

Anal Sci
Urashima SH, Tsuchiya H, Imae N, Yamaguchi A, Yui H.   +4 more
europepmc   +1 more source

INVESTIGATION OF THE CARBONACEOUS MATTER IN ULTRACARBONACEOUS AND FINE GRAINED ANTARCTIC MICROMETEORITES

, 2023
Rojas, Julien, Alexander, C.M.O'D, Nittler, Larry, Wang, Jianhua, Duprat, J., Engrand, Cecile, Dartois, Emmanuel   +6 more
openaire   +1 more source

Physics‐Constrained Constitutive Learning of Rate‐Limiting Timescales for Efficient Hydrogen‐Based Direct Reduction for Green Steel Making

Advanced Science, EarlyView.
A conversion‐resolved constitutive framework is developed for the hydrogen‐based direct reduction of iron oxide pellets. Effective reaction and transport timescales are inferred directly from measured trajectories and mapped against operating conditions, pellet architecture, and composition. The analysis reveals how late‐stage transport control emerges
Anurag Bajpai, Barak Ratzker, Pasquale Cavaliere, Dierk Raabe   +3 more
wiley   +1 more source

Trace Ru‐Doped PtCuRu@PtRu Core‐Shell Electrocatalyst for CO‐Resilient Methanol Oxidation

Advanced Science, EarlyView.
We engineered a trace Ru‐doped PtCuRu@PtRu core‐shell nanostructure. This design exploits lattice mismatch‐induced compressive strain between the PtCuRu ternary core and trace Ru‐doped Pt‐rich shell, systematically downshifting the Pt d‐band center to weaken *CO adsorption energetics.
Tianrui Xue, Shiyue Xing, Zhongliang Liu, Yiting Song, Jianyi Zhang, Miaomiao Liu, Huihui Li, Chunzhong Li   +7 more
wiley   +1 more source

Stromatolitic Mounds in Tidal-Facies Sandstones of the Paleoarchean Moodies Group (Barberton Greenstone Belt, Eswatini). [PDF]

Geobiology
Reimann S, Homann M, Janse van Rensburg DJ, Wiedenbeck M, Hallmann C, Antony R, Heubeck C.   +6 more
europepmc   +1 more source

Identification of Silicate and Carbonaceous Presolar Grains in the type 3 Enstatite Chondrites

Identification of Silicate and Carbonaceous Presolar Grains in the type 3 Enstatite Chondrites
We surveyed presolar grains in primitive enstatite chondrites by isotopography using the HokuDai isotope microscope system. The mineral identification has been conducted by X-ray analysis with scanning electron microscopy. The chemical compositions are determined for eight silicate and ten carbonaceous presolar grains.
openaire  

NLSS3 Impairs SHM1 Autophagic Degradation to Regulate Leaf Morphology and Salt Tolerance in Rice

Advanced Science, EarlyView.
In rice, NLSS3 binds and shields SHM1 from autophagic degradation to maintain serine homeostasis. The A132P mutation in nlss3 disrupts this, triggering SHM1 loss, metabolic dysfunction, K+ imbalance, and impaired ROS scavenging, which collectively drive narrow leaves and salt sensitivity.
Xiong Liu, Yulu Yang, Zhiqi Hao, Jing Xu, Huibo Zhao, Qiang Zhang, Deyong Ren, Xia Li, Guojun Dong, Lan Shen, Li Zhu, Jiang Hu, Zhenyu Gao, Qing Li, Qian Qian, Guangheng Zhang   +15 more
wiley   +1 more source

Correlative Raman Spectroscopy-SEM Investigations of Sintered Magnesium-Calcium Alloys for Biomedical Applications. [PDF]

Materials (Basel)
Nidadavolu E, Mikulics M, Wolff M, Ebel T, Willumeit-Römer R, Zeller-Plumhoff B, Mayer J, Hardtdegen HH.   +7 more
europepmc   +1 more source

An Embodied Paper‐Based Microfluidic Al‐Air Battery for Enduring Untethered Insect‐Scale Robots

Advanced Science, EarlyView.
This work presents a centimeter‐scale microfluidic aluminum–air battery (MFAAB) with dual‐surface anode and F−‐mediated byproduct decomposition. The design enables a high capacity of 2697.05 mAh/g Al and delivers tens of milliwatts to power LEDs, motors, and a toy car.
Yun Yang, Tao Jiang, Zhongyue Lu, Dapeng Fan, Zucheng Yi, Zirong Luo   +5 more
wiley   +1 more source

Low-Temperature Aqueous Alteration of Chondrites. [PDF]

Space Sci Rev
Lee MR, Alexander CMO, Bischoff A, Brearley AJ, Dobrică E, Fujiya W, Le Guillou C, King AJ, van Kooten E, Krot AN, Leitner J, Marrocchi Y, Patzek M, Petaev MI, Piani L, Pravdivtseva O, Remusat L, Telus M, Tsuchiyama A, Vacher LG.   +19 more
europepmc   +1 more source