Results 61 to 70 of about 9,554,634 (297)
Influence of Confining Pressure on the Kaiser Effect of Rocks
Doboku Gakkai Ronbunshu, 2003 AE法を用いた初期地圧の推定において再載荷時の拘束圧の影響に関する実験を行い, 得られた実験結果よりカイザー効果のメカニズムを検討した. 原位置での応力状態を模した三軸圧縮の先行載荷を行った供試体に対し, 先行載荷とは異なる大きさの拘束圧で再載荷を行った. このときのAE発生傾向には二つの急増点が観察され, 先行載荷時の軸差応力と軸応力とに対応している. 軸差応力と軸応力をそれぞれ記憶したクラックの存在が考えられ, これらは拘束圧の大きさに影響されない. この結果をもとに軸差応力を記憶しているクラックモデルとして2次クラックが甫載荷時に成長する際にAEが発生するモデルが実験結果とよく対応することを示した.
Kazutoshi MICHIHIRO +2 more
openaire +2 more sources
Synthesis of Aminocyclopropanes by Redox‐Neutral Aminoalkylation
Angewandte Chemie International Edition, EarlyView.Aminocyclopropane synthesis by hydroaminoalkylation utilizing cheap, readily available starting materials is presented, offering orthogonality to commonly used methods and allowing broad functional‐group tolerance. Solvent‐mediated conditions enable the reaction of a pre‐formed hemiaminal with alkenes and alkynes.
Gwyndaf A. Oliver +6 more
wiley +1 more source
Numerical study of AE and DRA methods in sandstone and granite in orthogonal loading directions
Water Science and Engineering, 2012 The directional dependency of the acoustic emission (AE) and deformation rate analysis (DRA) methods was analyzed, based on the contact bond model in the two-dimensional particle flow code (PFC2D) in two types of rocks, the coarse-grained sandstone and ...
Xu-hua Ren, Hai-jun Wang, Ji-xun Zhang
doaj +1 more source
The Anatomical Record, EarlyView.Abstract The green iguana (Iguana iguana) is an iguanine lizard with herbivorous and arboreal habits, whose distribution spans through South America, Central America to the south of North America. Although the genus Iguana is well‐known, the species still lacks a comprehensive and up‐to‐date anatomical study, particularly addressing the axial skeleton,
Vieno Rosa +2 more
wiley +1 more source
Scientific ReportsTo study the influence of cyclic disturbance stress on the mechanical behavior of coal during mining, a gas containing coal fluid-solid coupling servo seepage experimental system was used to conduct experimental research on the acoustic emission (AE ...
Minke Duan +7 more
doaj +1 more source
SensorsMonitoring landslide displacement and anti-slide pile damage is critical for assessing the stability of progressive loess landslides. To address the challenge of capturing precursor information for loess landslide instability under anti-slide pile ...
Suya Zheng +4 more
doaj +1 more source
Measuring physical activity in pregnancy using questionnaires: a meta-analysis
Acta Clinica Croatica, 2016 Physical activity (PA) during normal pregnancy has various positive effects on pregnant women’s health. Determination of the relationship between PA and health outcomes requires accurate measurement of PA in pregnant women.
Snježana Schuster +2 more
doaj +1 more source
Kaiser-Meyer-Olkin and Bartlett’s test of sphericity.
, 2019 Kaiser-Meyer-Olkin and Bartlett’s test of sphericity.
Jiawei He (3665995) +6 more
core +1 more source
The Anatomical Record, EarlyView.Abstract Intermittent hypobaric hypoxia (IHH) enhances oxygen transport, muscle metabolism, and cardiovascular health; however, the combined effects of hypobaria and cold are less well understood. Exposure to these stressful environmental factors, even intermittently, can affect skeletal muscle due to its plasticity, thereby altering its metabolic and ...
Garoa Santocildes +3 more
wiley +1 more source
An Interview with Matthew Kaiser on Competition and Play
, 2014 An Interview with Matthew Kaiser on Competition and Play, by Sean Scanlan. Matthew Kaiser, the author of The World in Play: Portraits of a Victorian Concept (Stanford UP, 2012) says that “[c]ompetition is the disease from which modern life suffers,” and
Matthew Kaiser, Sean Scanlan
core