Results 91 to 100 of about 75,496 (347)
Shiyou shiyan dizhi, 2021 The petroleum geological elements and main controlling factors of the Middle-Upper Cambrian Xixiangchi Group in the eastern Sichuan Basin were systematically analyzed on the basis of geological outcrops and drilling data.
Ziming SUN +3 more
doaj +1 more source
The Cambrian and the Ozark series [PDF]
American Journal of Science, 1893 n ...
openaire +3 more sources
Morphology and developmental traits of the trilobite Changaspis elongata from the Cambrian Series 2 of Guizhou, South China [PDF]
Acta Palaeontologica Polonica, 2019 The morphology and ontogeny of the trilobite Changaspis elongata based on 216 specimens collected from the Lazizhai section of the Balang Formation (Stage 4, Series 2 of the Cambrian) in Guizhou Province, South China are described.
Guang-Ying Du +5 more
doaj +1 more source
Shiyou shiyan dizhi, 2022 In order to classify the quantitative characterization method of structural fracture length in low-permeability reservoirs, the Cambrian Longwangmiao Formation of Moxi-Gaoshiti areas in the Sichuan Basin is taken an example in this study.
Ke SUN, Ke XU, Qinghua CHEN
doaj +1 more source
Early Cambrian U-Pb zircon age and Hf-isotope data from the Guasayán pluton, Sierras Pampeanas, Argentina: implications for the northwestern boundary of the Pampean arc [PDF]
, 2016 An Early Cambrian pluton, known as the Guasayán pluton, has been identified in the central area of Sierra de Guasayán, northwestern Argentina. A U?Pb zircon Concordia age of 533 ± 4 Ma was obtained by LA-MC-ICP-MS and represents the first report of ...
Alasino, Pablo Horacio +8 more
core +2 more sources
An Update: Enzymatic Synthesis for Industrial Applications
Angewandte Chemie International Edition, Accepted Article.Supported by rapid technological advancements, biocatalytic applications have matured into a sustainable, scalable, and cost‐competitive alternatives to established chemical catalysis. This review presents the most recent examples of enzyme‐based solutions for the manufacturing of molecules with extended carbon‐carbon frameworks and multiple ...
Thomas Bayer +4 more
wiley +1 more source
Open Geosciences, 2021 The early Cambrian is a critical interval of dramatic oceanic and biochemical changes in geological history. The black shale deposits, which are rich in Mo, Ni, V, and platinum group elements (PGE), are a reflection of that interval.
Wu Tong, Yang Ruidong, Gao Junbo, Li Jun
doaj +1 more source
Shiyou shiyan dizhi, 2022 The evaluation of post-mature source rocks gradually invalidates by traditional organic geochemical parameters due to the decreasing of organic matter abundance. However, the inorganic elements in source rocks are not easily affected by thermal evolution.
Chunhua SHI +4 more
doaj +1 more source
地质科技通报, 2022 Carbon isotope stratigraphy is an important means to subdivide and correlate the Cambrian strata. Based on the carbon isotope analysis of the carbonate strata of Lütuogou Section, northern Henan Province, it is found the δ13C value of carbonate samples ...
Yonglin Chen +5 more
doaj +1 more source
Cambrian combinatorics on quiver representations (type A) [PDF]
Adv. in Appl. Math. 143 (2023), Paper No. 102428, 2019 This paper presents a geometric model of the Auslander-Reiten quiver of a type A quiver together with a stability function for which all indecomposable modules are stable. We also introduce a new Catalan object which we call a maximal almost rigid representation. We show that its endomorphism algebra is a tilted algebra of type A.
arxiv +1 more source