Mostrando 621 - 640 Resultados de 10,994 Para Buscar '"rock ', tiempo de consulta: 0.23s Limitar resultados
  1. 621
    “…A reliable evaluation method for the fracability (i.e., ability to generate abundant cracks) of reservoir rocks is a critical issue for maximum hydraulic fracturing efficiency. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  2. 622
    “…The anisotropy of the mechanical properties of the rocks with interbedded sand and mud is obvious, which leads to the great mechanical weak plane effect on the wellbore stability. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  3. 623
    “…The stability of surrounding rock with bolt support depends on the stability within the reinforcement range. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  4. 624
    “…From the mechanical properties of rock samples, the Poisson’s ratio of intact rock samples is slightly smaller than that of defective rock samples. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  5. 625
    “…Such stress oscillations impart strain and damage, prompting mechanically loaded rocks and materials to fail. Here, we investigate, under uniaxial conditions, damage accumulation and weakening caused by time-dependent creep (at 60, 65, and 70% of the rocks’ expected failure stress) and repeating stress oscillations (of ± 2.5, 5.0 or 7.5% of the creep load), simulating earthquakes at a shaking frequency of ~ 1.3 Hz in volcanic rocks. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  6. 626
    por Guo, Jian‑jun, Wu, Zhen-wei, Liu, Kai
    Publicado 2023
    “…The instability of rock slope is still a very frequent geological disaster, which seriously affects people's life and production activities. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  7. 627
    “…Rock burst is a common hazard during tunnel excavation in high-stress and hard rock strata. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  8. 628
    “…Thus, this work investigates the relationships between calcination temperatures and the physical behaviour of hard rock lithium ores. The results showed that the increase in calcination temperature resulted in a higher lithium deportment in the finest size fraction (−0.6 mm) and thus a higher lithium grade and recovery. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  9. 629
    “…[Image: see text] This paper deals with the problem of the slippage failure of bolts in supporting soft rock, and the anchoring system being pulled out when conventional anchoring methods are used for bolts. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  10. 630
  11. 631
    “…BACKGROUND: The aim of this article is to report the findings of a secondary analysis of a previous injury study to consider previous injury as a risk factor for reinjury in rock climbing. METHODS: We completed a secondary analysis of 201 questionnaires that were gathered as part of a retrospective cross-sectional cohort survey that investigated the epidemiology of injuries in a representative sample of British rock climbers. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  12. 632
    por Högberg, Anders, Lombard, Marlize
    Publicado 2016
    “…We applied our approach in a regional context to compare the Still Bay point assemblages from Hollow Rock Shelter (Western Cape) and Umhlatuzana Rock Shelter (KwaZulu-Natal). …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  13. 633
    por Rock, Peter A.
    Publicado 1983
    Libro
  14. 634
  15. 635
    Tesis Libro
  16. 636
    por Meyerson, Debra E
    Publicado 2008
    “…Timely and provocative, Rocking the Boat puts self-realization and change within everyone's reach--whether your difference stems from race, gender, sexual orientation, values, beliefs, or social perspective.…”
    Enlace del recurso
  17. 637
    Publicado 2001
    “…This document concerns the award of a contract for the drilling of horizontal and vertical holes in concrete and rock. Following a market survey carried out among 49 firms in nine Member States, a call for tenders (IT-2794/ST/LHC) was sent on 14 August 2001 to nine firms and one consortium consisting of three firms, in seven Member States. …”
    Enlace del recurso
  18. 638
  19. 639
    “…Phosphate rock, pre-concentrated phosphate ore, is the primary raw material for the production of mineral phosphate fertilizer. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  20. 640
    por Al-Kindi, Ilyas, Babadagli, Tayfun
    Publicado 2023
    “…This paper studies the vaporization of single- and multicomponent hydrocarbons in different types of rocks (namely sandstones, limestones, tight sandstones, and shales). …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
Herramientas de búsqueda: RSS