Results 41 to 50 of about 405,811 (188)
Synergistic Hydration Characteristics of Volcanic Ash-Silica Fume-Cement Composite Cementitious Material [PDF]
长江科学院院报[Objective] Natural volcanic ash has environmental advantages in reducing cement consumption and lowering carbon emissions. However, due to its low reactivity, the use of volcanic ash alone often leads to reduced early-age performance of cement-based ...
YI Si-yu, YANG Zhen-dong, WANG Jun, TANG Bing, NIE Si-hang, HE Qing-hui, LIU Shu-hua
doaj +1 more source
Human Resource Development Quarterly, EarlyView.ABSTRACT This study explores incidental learning among physicians navigating uncertainty during the COVID‐19 pandemic. Using a constructivist research design, we conducted a literature review of 13 empirical studies on incidental learning in complexity and analyzed critical incident interviews with 12 emergency medicine and intensive care physicians ...
Henriette Lundgren +4 more
wiley +1 more source
Volcanic ash beds in the Waikato district [PDF]
, 1967 This report lies somewhere between the "pathfinder" variety and the completed account for the reason that the results of detailed mapping and identification are still being prepared for publication. For the younger beds less than 36,000 years we now know
Pullar, W.A.
core
Atmosphere, 2021 In the present study, we analyzed the particle size distribution (PSD) of falling volcanic ash particles measured using optical disdrometers during six explosive eruptions of the Sakurajima volcano in Kagoshima Prefecture, Japan.
Masayuki Maki +2 more
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Building a library of electrocatalysts based on single‐centered metallophthalocyanines
InfoMat, EarlyView.This study offers a transformative approach that facilitates the discovery of high‐performance catalysts by establishing a metallophthalocyanine‐based electrocatalyst library tailored for energy conversion processes. It will play a crucial role in advancing carbon neutrality and fostering the creation of long‐term sustainable energy ecosystems ...
Jin Hyuk Cho +11 more
wiley +1 more source
Uses of volcanic ash beds in geomorphology [PDF]
, 1967 In geomorphology air-fall volcanic ashes possess high value as marker beds. These have proved particularly useful in studies associated with infilling of flood plains, fan building, terrace correlation and chronology, erosion, shoreline and sea level ...
Pullar, W.A.
core
First Volcanic Plume Measurements by an Elastic/Raman Lidar Close to the Etna Summit Craters
Frontiers in Earth Science, 2018 Volcanic emissions represent a well-known hazard mainly for aviation safety that can be reduced with real time observations and characterization of eruptive activity.
Antonella Boselli +7 more
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Can DNA from wet, temperate soils be used for palaeoecological reconstruction?
Journal of Quaternary Science, EarlyView.ABSTRACT Sedimentary ancient DNA in well‐dated contexts (sedaDNA) has great potential as a palaeoecological proxy. A few studies have attempted palaeoecological reconstructions using sedaDNA from soil; these studies have been mainly restricted to cold and/or dry soils.
Nick A. Cutler +3 more
wiley +1 more source
Contorted stratification with clay lobes in volcanic ash beds, Raglan-Hamilton region, New Zealand [PDF]
, 1970 Contorted stratification in basal volcanic ash beds of the Pleistocene Hamilton Ash Formation incorporates halloysitic clay lobes which project upward into a bed of predominantly allophanic material.
Tonkin, Philip J.
core
Sains Tanah: Journal of Soil Science and Agroclimatology, 2014 Impact of fresh volcanic ash on soil fertility is rarely studied mainly on nutrient availability, uptake and on plant growth. Fresh volcanic ash is primary mineral that takes time and agents such as organic materials to mineralized before it contribute ...
Suntoro +3 more
doaj +1 more source