Results 31 to 40 of about 1,696 (176)

A Microphysical Model for Predicting Magma Fragmentation

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Explosive volcanic eruptions occur when coherent bubbly magma breaks apart in a process called “fragmentation.” Accurate conceptual and numerical models of fragmentation are a pre‐requisite for prediction of eruption explosivity. However, existing models, which neglect bubble‐scale magma physics, agree poorly with new experimental evidence ...
Jérémie Vasseur, Fabian B. Wadsworth, Edward W. Llewellin, Francisco Cáceres, Donald B. Dingwell, Yan Lavallée, Bettina Scheu   +6 more
wiley   +1 more source

Ultralight large grain porous material - expanded obsidian [PDF]

E3S Web of Conferences, 2019
In the production of crushed stone, lithoidal pumice and perlite sand, it is advisable to separate and segregate the obsidian. Wherein, the separated obsidian is converted into production waste.
Safaryan Artsruni, Sargsyan Tamara, Kalantaryan Marine, Melyan Hripsime   +3 more
doaj   +1 more source

Advanced Experiment Design Strategies for Drug Development

Advanced Intelligent Discovery, Volume 2, Issue 4, August 2026.
Wang et al. analyze 592 drug development studies published between 2020 and 2024 that applied design of experiments methodologies. The review surveys both classical and emerging approaches—including Bayesian optimization and active learning—and identifies a critical gap between advanced experimental strategies and their practical adoption in ...
Fanjin Wang, Anthony Harker, Mohan Edirisinghe, Maryam Parhizkar   +3 more
wiley   +1 more source

Edge Sharpness Does Not Vary Between Palaeolithic Flake Technologies, With the Possible Exception of Levallois Débitage

Archaeometry, Volume 68, Issue 4, Page 674-686, August 2026.
ABSTRACT Investigating why hominins adopted particular flake technologies during the Mid‐to‐Late Pleistocene is essential to understanding patterns of lithic innovation. This period witnessed the emergence of Levallois technologies (~350–250 ka) and later blades, each “replacing” earlier forms.
Anna Mika, Alastair Key
wiley   +1 more source

Narrating Science, Shaping Selves: Oral Stories Latine Caregivers Share With Their Preschoolers as Pathways to Science Learning and Identity

Applied Cognitive Psychology, Volume 40, Issue 4, July/August 2026.
ABSTRACT We studied the oral stories 226 U.S. Latine caregivers (most Mexican‐born, earning under $50,000 annually) shared with their children (Mage = 51.81 months) when prompted to tell a science‐ or nature‐related story. Inductive qualitative coding and analyses revealed personal experience stories—reminiscing, caregiver memories, and fictionalized ...
Andrea C. Bühler‐Wassmann, Anele Villanueva, Diana I. Acosta, Maureen A. Callanan, Gigliana Melzi, Catherine A. Haden   +5 more
wiley   +1 more source

Marine Sediment Record of Eruption‐Fed Vertical Density Currents, Kermadec Arc (Rangitāhua)

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Products of explosive volcanism can be transported into the oceans, where they form marine tephra layers. The processes responsible for their deposition are often complex, involving multiple transport mechanisms. During the RV Investigator voyage IN2022‐V02 (2022), a 35‐cm‐thick marine tephra unit was piston‐cored at 2,460 m water depth in the
Janne M. Scheffler, Martin Jutzeler, Steffen Kutterolf, Rebecca J. Carey, Josephin Wolf, Jacek Raddatz, Kuo‐Lung Wang, Hao‐Yang Lee   +7 more
wiley   +1 more source

Obsidian Reflections: Symbolic Dimensions of Obsidian in Mesoamerica

, 2014
Departing from the political economy perspective taken by the vast majority of volumes devoted to Mesoamerican obsidian, Obsidian Reflections is an examination of obsidian's sociocultural dimensions--particularly in regard to Mesoamerican world view, religion, and belief systems.
Levine, Marc N., editor, Carballo, David M., editor, University Press of Colorado, publisher   +2 more
openaire   +3 more sources

The exploitation of obsidian in the Central Plateau of Santa Cruz, Argentina: Results from La María and Cerro Tres Tetas and a regional perspective

Journal of Lithic Studies, 2016
La María and Cerro Tres Tetas archaeological localities are located in the Central Plateau, in the province of Santa Cruz, Argentine Patagonia. This area presents abundant lithic raw materials of very good quality for knapping including flint, chalcedony
Manuel Enrique Cueto, Ariel David Frank, Fabiana Skarbun   +2 more
doaj   +1 more source

Magnetic properties of geraisites, the first tektite strewn field identified in Brazil

Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1163-1178, July 2026.
Abstract Geraisites are a newly recognized class of tektite from Brazil. They occur as centimeter‐sized, elongated to subspherical bodies scattered across surface gravel and shallow subsurface layers within a ~90‐km‐long strewn field extending between the municipalities of São João do Paraíso and Curral de Dentro, near the border between the states of ...
Melissa De Andrade Nunes, Ricardo I. F. Trindade, João Pedro Rodriguez Pinto, Alvaro P. Crósta, Gabriel G. Silva, Ludovic Ferrière, Camila R. Sales, Giovanna M. Tosi   +7 more
wiley   +1 more source

EHA Recommendations for preconceptual and antenatal screening and prenatal diagnosis for hemoglobinopathies

HemaSphere, Volume 10, Issue 6, June 2026.
Abstract Thalassemia and sickle cell disease (SCD) are among the most common monogenic disorders worldwide. They cause chronic hemolytic anemia, the consequences and prognosis of which vary considerably depending on the genetic characteristics of patients and the healthcare system in their country of residence.
Mariane de Montalembert, Maria D. Cappellini, Achille Iolascon, Lucia de Franceschi, Eda Ömur, Michele Abi Saad, Immacolata Andolfo, Celeste Bento, Maria Berghs, Doris Bonnet, Andreas Glenthoj, Beatrice Gulbis, Tuphan K. Dolai, Jorge Lima, Irene Motta, Roberta Russo, Ali Taher, Leon Tshilolo, Antonio Almeida, David Rees   +19 more
wiley   +1 more source