Results 31 to 40 of about 319,875 (285)
Bulletin of the Mineral Research and ExplorationCarbonaceous Chondrites have special significance in the stellar evolution and in particular in the evolution of life on earth. The carbonaceous meteorite that fell in Mukundpura village, Jaipur, Rajasthan on 6th June 2017 is one such rare CM2 ...
Chandrasekharam Dornadula +6 more
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Life, 2022 The stable isotope composition of soluble and insoluble organic compounds in carbonaceous chondrites can be used to determine the provenance of organic molecules in space.
Heather V. Graham +4 more
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Superiority of Thiourea Au Extraction from Low Graphiticity Carbonaceous Gold Ores
Journal of MMIJDouble refractory gold ores (DRGOs), in which few percentages of carbonaceous matter are present and gold grains are encapsulated in sulfides, have been abandoned to develop due to economic loss caused by adsorption of Au(CN)2− on carbonaceous matter ...
Ikumi SUYAMA +2 more
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The Astrophysical Journal Letters, 2023 Nucleosynthetic isotope anomalies in meteorites allow distinguishing between the noncarbonaceous (NC) and carbonaceous (CC) meteorite reservoirs and show that correlated isotope anomalies exist in both reservoirs.
Jonas M. Schneider +2 more
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Sintering of Grains of Some Carbonaceous Substances
The Journal of the Society of Chemical Industry, Japan, 1957 黒鉛化容易な炭素質物質の450～700℃間における状態を推測するため,炭素質粒子間の焼結現象を中心に検討した。用いた試料のうち,サラン,セルロース,泥炭の各320℃焼成物は焼結せず,ビオラントロンおよび石油ピッチ,タール用いた試料のうち,サラン,セルロース,泥炭の各320℃焼成物は焼結せず,ビオラントロンおよび石油ピッチ,タールに述べた示差熱分析における500～700℃間の吸熱現象,さらにすでに知られているこの温度範囲におけるC0(層構の厚さ)の変化曲線等の関係からこの温度範囲の状態を次のように考えた。すなわち-O-,-C-C-結合の分裂を伴なって炭素構造に転移した後,層構造に結合する低分子量原子団および共存する低分子物質の熱振動が急速に現われ,部分的な半融状態に近い状態となり ...
openaire +2 more sources
Hydrogel platforms for 3D cardiac tissue engineering and fibrotic disease modelling
FEBS Open Bio, EarlyView.Hydrogel‐based cardiac tissue models are advancing our understanding of heart health and disease. By incorporating electrical conductivity, aligned structures, and tunable mechanical properties, these platforms better replicate the complex environment of native heart tissue.
Harrison Porritt +2 more
wiley +1 more source
Supernova Dust Synthesis—Carbonaceous Dust in the Very Early Universe
The Astrophysical JournalRecent observations have revealed the spectral features of carbonaceous grains even in very distant galaxies. We develop a state-of-the-art dust synthesis code by self-consistently solving molecule and dust formation in supernova (SN) ejecta that contain
Gen Chiaki +2 more
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NanoSIMS-Analyse und hochauflösende Elektronenmikroskopie an präsolaren Silikaten aus roten Riesensternen und Supernovaexplosionen [PDF]
, 2009 This thesis deals with the analysis of “presolar” silicates and oxides by high resolution mass spectrometry and electron microscopy techniques. This “stardust” was identified by its extreme oxygen isotopic anomalies, which point to nucleosynthetic ...
Vollmer, Christian
core
Advanced Engineering Materials, EarlyView.Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar +2 more
wiley +1 more source
The Astrophysical JournalThe 2175 Å extinction bump, the most prominent spectral feature superimposed on the interstellar extinction curve, is widely seen in the interstellar medium of the Milky Way and external galaxies, both near and far.
Qian Wang, Aigen Li, X. J. Yang
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