Results 131 to 140 of about 604,221 (250)

Tree-Ring Research in Semi-Arid West Africa: Need and Potential

, 2002
High-resolution paleoclimatic data for West Africa are needed to provide context for contemporary climatic and ecological dynamics. Six hundred trees (22 botanical families, 43 genera and over 70 species) from semi-arid West Africa were evaluated for ...
Tarhule, Andover, Hughes, Malcolm K.
core  

Aluminum Oxynitride‐Engineered Transparent Aluminum Nitride Resistive Memory for Low‐Leakage Multilevel Switching in Micro‐LED Pixels

Advanced Materials Technologies, EarlyView.
An AlON interfacial layer is engineered within an AlN switching layer to enable transparent RRAM with four stable resistance states. The device achieves low‐voltage multilevel switching and a high HRS, allowing precise grayscale modulation and preventing light leakage in micro‐LEDs operated at VDD = 2.7 V.
Sung Keun Choi, Ho Jin Lee, Seok Hee Hong, Jae Seong Park, Chan Ho Ryu, Kyeong Heon Kim, Tukaram D. Dongale, Tae Geun Kim   +7 more
wiley   +1 more source

Tests of the RCS Method for Preserving Low-Frequency Variability in Long Tree-Ring Chronologies

, 2003
To preserve multi-centennial length variability in annual tree-ring chronologies, the Regional Curve Standardization (RCS) method calculates anomalies from a regionally common, non-climatic age-trend function.
Esper, Jan, Peters, Kenneth, Krusic, Paul J., Schweingruber, Fritz H., Cook, Edward R.   +4 more
core  

Exploratory temperature and precipitation reconstructions from the Qinling Mountains, north-central China

, 2005
February-April (FMA) temperature at Foping (1879-1989) and July-August (JA) precipitation at Xian (1895–1988) have been reconstructed using total ring width (TRW) and maximum latewood density (MXD) from trees in the Qinling Mountains, at the northern ...
Garfin, Gregg M., R. Touchan, Yu, Liu, M. K. Hughes, J. M. Burns, Burns, James M., Liu Yu, Ramzi Touchan, G. M. Garfin, Steven W. Leavitt, Z. S. An, Gregg M. Garfin, An Zhisheng, Zhisheng, An, S. W. Leavitt, Leavitt, Steven W., Malcolm K. Hughes, Touchan, Ramzi, James M. Burns, Hughes, Malcolm K., L. Yu   +20 more
core   +1 more source

Testing and Simulation of Multilayer Polyvinylidene Fluoride‐Based Piezoelectric Energy Harvester Devices

Advanced Materials Technologies, EarlyView.
The study considers the use of polymer/dielectric‐based multilayers piezoelectric Energy Harvesters (EH) to produce an output voltage and current, by exploiting the mechanical energy provided by human organs movements. In particular, the heart motion is considered from the kinematic viewpoint, and a multiphysics theoretical model is developed to assess
Hamdi Ezzin, Silvia Monchetti, Paolo Emilio Puddu, Luciano Teresi, Antonio DeSimone, Roberto Brighenti   +5 more
wiley   +1 more source

Removing Biological Trends From Tree-Ring Series: Testing Modified Hugershoff Curves

, 2010
The performance of the Hugershoff curve on fitting the growth trends of tree-ring series was tested using ring-width series with different starting years.
Zhang, Fen, Gou, Xiaohua, Peters, Kenneth, Li, Jinbao, Fang, Keyan   +4 more
core  

From Rigid to Soft Robotic Approaches for Neuroendoscopy

Advanced Robotics Research, EarlyView.
Robotic assistance has had minimal impact on deep intraventricular surgeries, where small‐scale, precision, and reduced invasiveness can contribute to improved patient outcomes. Emerging technologies in rigid, soft, and hybrid robotics are reviewed to identify the most promising mechanisms for deep brain navigation in addition to an attempt to identify
Kieran Gilday, Irena Zubak, Andreas Raabe, Josie Hughes   +3 more
wiley   +1 more source

Toward Wireless Implantable Robotic Systems Driven by Magnetic Field for Personalized Therapy

Advanced Robotics Research, EarlyView.
Robotic materials are playing an increasingly vital role in enabling sensing and actuation at small scales. This perspective highlights recent advances in magnetic materials and magnetically actuated devices for wireless sensing, actuation, and energy harvesting toward implantable robotic systems for closed‐loop therapy.
Yusheng Wang, Ruijian Ge, Xiaoguang Dong
wiley   +1 more source

Dendrochronological Modeling of the Effects of Climatic Change on Tree-Ring Width Chronologies from the Chaco Canyon Area, Southwestern United States

, 1992
Hypotheses about the causes of the growth and decline of the Chacoan regional interaction system in the southwestern United States between A.D. 900 and 1200 are evaluated against tree-ring evidence and the results of an empirical model (PRECON) that ...
Dean, Jeffrey S., Fritts, Harold C.
core  

A Multidirectional Textile Interface for Remote Control Using Dynamic Area‐Based Capacitance Modulation

Advanced Robotics Research, EarlyView.
Here, we present a textile, wearable capacitive interface enabling multidirectional remote control by dynamically modulating electrode overlap and spacing via a freely gliding upper electrode. A forearm‐mounted prototype drives robotic and media tasks with 12–15 ms latency, maintains < 0.8% drift after 500 cycles, and remains stably functional at 90 ...
Cagatay Gumus, Fulya Yenilmez, Kadir Ozlem, Hakan Kestir, Eren Tasdemir, Berkant Bakisli, Gökhan Ince, Ozgur Atalay, Asli Tuncay Atalay   +8 more
wiley   +1 more source