Results 81 to 90 of about 628,378 (346)

Sulla possibilit\ue0 di estendere l'informazione climatica del passato attraverso le serie dendrocronologiche [PDF]

, 2008
In the paper tree-ring index series obtained by 15 Pino Laricio individuals from Etna Volcano in Sicily was used in order to reconstruct the past climate. The significative relation founded between minimun temperature and tree-ring index have enable to
Agnese, C., Costa, G., D'Asaro, F.
core  

Matrix Model and Time-like Linear Dilaton Matter

, 2004
We consider a matrix model description of the 2d string theory whose matter part is given by a time-like linear dilaton CFT. This is equivalent to the c=1 matrix model with a deformed, but very simple fermi surface. Indeed, after a Lorentz transformation,
A. Kapustin, A. Sen, A. Sen, A. Sen, A. Strominger, A. Strominger, A.B. Zamolodchikov, B. Craps, B.C. Da Cunha, D. Gaiotto, E.J. Martinec, E.J. Martinec, F. Larsen, G.W. Moore, H. Ita, I.K. Kostov, I.R. Klebanov, I.R. Klebanov, J. Lee, J. McGreevy, J. Polchinski, J. Teschner, J. Teschner, J.L. Karczmarek, J.L. Karczmarek, J.L. Karczmarek, K. Okuyama, M. Aganagic, M. Ernebjerg, M.R. Douglas ., N. Itzhaki, N. Lambert, N. Seiberg, N. Seiberg, N. Toumbas, P. Mukhopadhyay, P.H. Ginsparg, R. Dijkgraaf, S. Alexandrov, S. Fredenhagen, S. Gukov, S. Hellerman, S. Hellerman, S.R. Das, T. Takayanagi, T. Takayanagi, T. Takayanagi, Tadashi Takayanagi, U.H. Danielsson, V. Balasubramanian, V. Fateev, V. Schomerus, X. Yin, Y. Hikida   +53 more
core   +4 more sources

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source

Phenological activities of cambium and inter-annual variations of Pinus densiflora saplings upon CO2 enrichment

Journal of Wood Science
The current study investigated the long-term effects of CO2 enrichment on cambial activity and wood tracheid traits of Pinus densiflora grown in Open Top Chambers (OTCs).
Jun-Hui Park, En-Bi Choi, Hyemin Lim, Jeong-Wook Seo   +3 more
doaj   +1 more source

Tree-ring evidence of the elusive 1959 summer cold event in northwestern North America

Arctic, Antarctic, and Alpine Research
Tree-ring records in northwestern North America suggest that the year 1959 was anomalously cold relative to the last several centuries. Here, we investigate the spatial characteristics, specific timing, and magnitude of the 1959 cold event through ...
Caroline Leland, Nicole Davi, Rosanne D’Arrigo, Laia Andreu-Hayles, Arturo Pacheco-Solana, Julie Edwards, Kevin J. Anchukaitis, Trevor J. Porter, Michael F.J. Pisaric, Madeleine Mant, Tracey Galloway, Rose Oelkers   +11 more
doaj   +1 more source

Dendrokronológia geológiai és paleoklimatológiai alkalmazásokkal = Dendrochronology with applications in geology and paleoclimatology [PDF]

, 2008
A projekt feladata volt az évgyűrűelemzés bevezetése a hazai kutatásba, különös tekintettel a geológiai és őslénytani alkalmazás lehetőségeire. Létrehoztuk és fölszereltük az ELTE Őslénytani Tanszékén az évgyűrű laboratóriumot és több részterületen ...
Grynaeus, András, Kázmér, Miklós, Mészáros, Lukács, Nagy, Balázs, Timár, Gábor   +4 more
core  

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Tree growth and vegetation activity at the ecosystem-scale in the eastern Mediterranean

Environmental Research Letters, 2017
Linking annual tree growth with remotely-sensed terrestrial vegetation indices provides a basis for using tree rings as proxies for ecosystem primary productivity over large spatial and long temporal scales.
Bethany L Coulthard, Ramzi Touchan, Kevin J Anchukaitis, David M Meko, Fatih Sivrikaya   +4 more
doaj   +1 more source

Numerical Modeling of Tank Cars Carrying Hazardous Materials With and Without Composite Metal Foam

Advanced Engineering Materials, EarlyView.
Large‐scale puncture models consisting of hazardous materials (HAZMATs) tank car with protective steel–steel composite metal foam (S–S CMF) are solved numerically. Tank car plate with added 10.91–13.33 mm thick S–S CMF layer does not puncture. Protective S–S CMF absorbs impact energy, reduces plate deformation, and prevents shear bands formation ...
Aman Kaushik, Afsaneh Rabiei
wiley   +1 more source