Results 81 to 90 of about 817,166 (220)

Use of the Schmidt hammer for testing weak rock

, 2007
A Schmidt hammer, also known as a Swiss hammer or a rebound hammer, is a device to measure the elastic properties or strength of concrete or rock, mainly surface hardness and penetration ...
Mohamad, Edy Tonnizam, Kassim, Khairul Anuar   +1 more
core  

Evolutionary framework and tribal circumscription of Amaranthaceae sensu stricto based on a comprehensive phylogenomic analysis

Cladistics, EarlyView.
Abstract The evolutionary history of Amaranthaceae sensu stricto (s.s.) has been shaped by multiple whole‐genome duplications and rapid radiations, producing an ecologically diverse lineage whose internal relationships have long remained unresolved.
Tina Kiedaisch, Anže Žerdoner Čalasan, Ross A. McCauley, Gudrun Kadereit   +3 more
wiley   +1 more source

Bio-deterioration of stone and concrete by Melanopsis praemorsa in Gan-HaShlosha national park—A case study

Case Studies in Construction Materials, 2020
Gan HaShlosha national park contain two ponds of running brackish water. Dams were built on the ponds in the 80 s. Some masonary from the dams, as well as other underwater structure, have deteriorated.
Amit Kenny
doaj   +1 more source

‘Resilient’ Refugees? Eritreans in Addis Ababa

Development and Change, EarlyView.
ABSTRACT Resilience — the ability to ‘bounce back better’ from hardships — has gained prominence as an empowering idea for refugees worldwide. However, due to its conceptual ambiguity, there is no consensus on what counts as ‘resilience’ in practice. To survive without access to humanitarian aid or the right to work, Eritrean refugees in Addis Ababa ...
Naohiko Omata
wiley   +1 more source

The Geoeconomic Turn on Stage: National Identity and the Interpretation of the EU's Trade Sustainability Diplomacy in Indonesia and Vietnam

JCMS: Journal of Common Market Studies, EarlyView.
Abstract In the context of the European Union's (EU's) geoeconomic shift, the governance of Trade and Sustainable Development (TSD) has become a central yet contested pillar of its external trade policy. Accusations of green colonialism highlight the stakes around how partner countries interpret the EU's normative agenda.
Camille Nessel, Zhihang Wu
wiley   +1 more source

The Laser Scanner Technique: A Tool for Determining Shear Strength Parameters of Rock Mass Discontinuities

Applied Sciences
When evaluating the shear strength of rock mass discontinuities, certain challenges arise due to the difficulty in quantifying the roughness characteristics of surfaces and the strength of asperities.
Margherita Zimbardo, Alessandra Nocilla, Anna Scotto di Santolo   +2 more
doaj   +1 more source

Schmidt hammer R-values of coastal alluvial fan surface generations at the south-central coast of the Atacama Desert

This dataset contains Schmidt hammer R-values from, in total, 23 morphostratigraphic units of 12 multi-stage coastal alluvial fans distributed along the south-central coast of the Atacama Desert.
Walk, Janek
core   +1 more source

A deeper look into the diversity of suckermouth catfishes (Mochockidae: Chiloglanis Peters 1868) of southern Africa, with the description of four new species

Journal of Fish Biology, EarlyView.
Abstract Suckermouth catfishes of the genus Chiloglanis Peters 1868 are small and predominantly rheophilic fishes endemic to Africa. This genus is quite diverse, with over 70 species distributed across most river systems on the continent, except for the Cape Fold ecoregion and most of northern Africa.
Tadiwa Isaac Mutizwa, Tholoana Ntokoane, Albert Chakona   +2 more
wiley   +1 more source

Hammer Time: Using the Schmidt Hammer to Improve the Forecasting Accuracy of the Rockfall Activity Index (RAI) [PDF]

69A3551747110The Schmidt hammer is a widely used and inexpensive instrument for estimating rock strength either in the lab or in the field. Our research team tested the accuracy and repeatability of the Schmidt hammer to estimate rock strength on six ...
Pacific Northwest Transportation Consortium (PacTrans) (UTC), University of Washington. University Transportation Center for Region 10, University of Alaska Fairbanks, Darrow, Margaret M., Herrman, Daisy M   +4 more
core  

How Strategic Leaders Drive Firms in Ecosystems: Envisioning Value, Orchestrating Knowledge, and Shifting Roles

Journal of Management Studies, EarlyView.
Abstract Research on business ecosystems has illuminated how ecosystems emerge, evolve, and transform, revealing ecosystem‐level dynamics and the central actors that orchestrate them. Yet, it is individual firms that continuously attempt to establish and shift the roles they play within ecosystems through the vision and choices of their strategic ...
Paolo Aversa, Carmelo Cennamo, Ambra Mazzelli, Gianni Lorenzoni   +3 more
wiley   +1 more source