Results 81 to 90 of about 50,751 (297)

Five centuries of Upper Indus River flow from tree rings [PDF]

, 2013
Water wars are a prospect in coming years as nations struggle with the effects of climate change, growing water demand, and declining resources. The Indus River supplies water to the world’s largest contiguous irrigation system generating 90% of the food
Ahmed, Moinuddin, Cook, Edward R., Fenwick, Pavla, Khan, Nasrullah, Palmer, Jonathan G., Wahab, Muhammad, Woodhouse, Connie A., Zafar, Muhammad Usama   +7 more
core   +2 more sources

PBF‐LB/M of Ti‐6Al‐4V: High‐Pressure Solution Treatment and Aging for Applications in a Sustainable Aerospace

Advanced Engineering Materials, EarlyView.
Additive manufacturing (AM) allows great geometric freedom for lightweight components. As parts are progressively optimized exploiting potentials in AM leading in smaller material cross sections, high pressure solution treating and aging (STA) treatments show an enormous potential for strongly improving material properties.
Mika León Altmann, Andre Danzig, Freerk Syassen, Rainer Fechte‐Heinen, Anastasiya Toenjes   +4 more
wiley   +1 more source

Deciphering solar turbulence from sunspots records

, 2009
It is generally believed that sunspots are the emergent part of magnetic flux tubes in the solar interior. These tubes are created at the base of the convection zone and rise to the surface due to their magnetic buoyancy.
Abreu, Alemany, Beer, Browning, Carbone, Constable, Courtillot, F. Plunian, Frick, G. R. Sarson, Lawrence, Meneveau, Nicol, Pagel, R. Stepanov, Sakuraba, Solanki, Tobias, Usoskin, Yordanova, Zhou   +20 more
core   +3 more sources

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

High-latitude eruptions cast shadow over the African monsoon and the flow of the Nile [PDF]

, 2006
Nile River records indicate very low flow following the 1783–1784 Laki volcanic eruption, as well as after other high-latitude volcanic eruptions. As shown by climate model simulations of the Laki eruption, significant cooling (−1° to −3°C) of the ...
Alan Robock, de Montredon, Franklin, Georgiy L. Stenchikov, Graf, Grattan, Grattan, Hammer, Hammer, Hansen, Hantemirov, Hassan, Highwood, Jacoby, Jones, Koch, Kondrashov, Lacis, Lamb, Luke Oman, Luterbacher, McCarthy, Mooley, Oman, Oman, Robock, Robock, Rotstayn, Schmidt, Simkin, Stothers, Stothers, Stott, Thordarson, Thordarson, Thordarson, Thorvaldur Thordarson, Volney, Zielinski   +38 more
core   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Major Δ14C excursions during the late glacial and early Holocene: changes in ocean ventilation or solar forcing of climate change? [PDF]

, 2003
The atmospheric 14C record during the Late Glacial and the early Holocene shows sharp increases simultaneous with cold climatic phases. These increases in the atmospheric 14C content are usually explained as the effect of reduced oceanic CO2 ventilation ...
Geel, Bas van,, Plicht, Johannes van der,, Renssen, Hans,   +2 more
core   +3 more sources

Laser Metal Powder Deposition of Titanium Microalloyed HSLA Steel FeC0.12Si0.25Mn1.3

Advanced Engineering Materials, EarlyView.
This study investigates the additive manufacturing of titanium‐doped high‐strength low‐alloy (HSLA) steel via laser metal deposition. It reveals distinct process‐structure relationships for elemental powder blends compared to prealloyed feedstocks.
Olaf Stelling, Matthias Steinbacher, Nils Ellendt   +2 more
wiley   +1 more source

Analiza dendroecologică a regimului perturbărilor în pădurile din nordul Carpaţilor Orientali [Dendroecological analysis of disturbance regime in forests form the North of Eastern Carpathian] [PDF]

Bucovina Forestieră, 2003
The present structure of natural forest ecosystems from the North of Eastern Carpathian, his heterogeneity, is the results of the historic disturbances.
Popa I
doaj  

3D‐Printed Giant Magnetoresistive (GMR) Sensors Based on Self Compliant Springs

Advanced Engineering Materials, EarlyView.
This work explores 3D‐printed GMR sensors utilizing self‐compliant spring structures and conductive PLA composites. By optimizing arm width, we achieved high piezoresistive (0.34%/mm) and magnetoresistive (0.77%/mT) sensitivities. Demonstrated through Bluetooth‐integrated pressure and magnetic position sensing, these full printed low‐cost, customizable
Josu Fernández Maestu, Nelson Pereira, Javier Vicente, Carmen Rial Tubio, Senentxu Lanceros‐Méndez   +4 more
wiley   +1 more source