Results 81 to 90 of about 79,888 (294)

Influence of Summer Sublimation on δD, δ18O, and δ17O in Precipitation, East Antarctica, and Implications for Climate Reconstruction From Ice Cores

Journal of Geophysical Research - Atmospheres, 2019
In central Antarctica, where accumulation rates are very low, summer sublimation of surface snow is a key element of the surface mass balance, but its fingerprint in isotopic composition of water (δD, δ18O, and δ17O) remains unclear.
H. Pang, S. Hou, A. Landais, V. Masson-Delmotte, J. Jouzel, H. Steen-Larsen, C. Risi, Wang-Bin Zhang, Shuangye Wu, Yuan-Sheng Li, C. An, Yetang Wang, F. Prié, B. Minster, S. Falourd, B. Stenni, C. Scarchilli, K. Fujita, P. Grigioni   +18 more
semanticscholar   +1 more source

The Impact of Precipitation and Sublimation Processes on Snow Accumulation: Preliminary Results

, 2008
The need for climate change prediction has focused attention on the Surface Mass Balance (SMB) of the Antarctic continent and on how it influences the sea level.
Urbini, S., De Silvestri, L., Frezzotti, M., Didonfrancesco, G., Scarchilli, C., Grigioni, P., Dolci, S., Valt, M., Iaccarino, A.   +8 more
core   +1 more source

Programmable Carrier‐Free All‐Enzyme Beads for Modular Continuous‐Flow Biocatalysis

Advanced Materials, EarlyView.
Genetically encoded enzyme building blocks self‐assemble into monodisperse, carrier‐free protein beads via a droplet‐based formulation strategy. These programmable catalytic particles enable modular continuous‐flow biocatalysis, from single‐enzyme reactions to multi‐enzyme cascades and bead–bead coupled reactor systems.
Jennifer Kühne, Julian S. Hertel, André Delavault, Judith Felk, Martin Peng, Lara Reuber, Felix Ott, Kim Wanner, Marc F. Münker, Adrian Neukirch, Alexei Kiselev, Kersten S. Rabe, Christof M. Niemeyer   +12 more
wiley   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Laser‐Induced Local De‐Doping in Organic Semiconductors

Advanced Materials Technologies, EarlyView.
The polymer PBTTT‐C14 doped with the small molecule acceptor F4TCNQ is considered as a benchmark material system. Mask‐free, microscale patterning of the doping level via laser‐induced heating and sublimation of dopant molecules is shown. Controlling laser irradiance and swath spacing allows dopant level control with laser‐limited resolution, opening ...
Christian Rainer, Aleksandr Perevedentsev, Daniel Ryklin, Rasmus R. Schröder, Gerardo Hernandez‐Sosa, Uli Lemmer   +5 more
wiley   +1 more source

Blowing Snow Sublimation and Transport over Antarctica from 11 Years of CALIPSO Observations

, 2017
. Blowing snow processes commonly occur over the earth's ice sheets when the 10 m wind speed exceeds a threshold value. These processes play a key role in the sublimation and redistribution of snow thereby influencing the surface mass balance.
S. Palm, Vinay Kayetha, Yuekui Yang, R. Pauly   +3 more
semanticscholar   +1 more source

Visible‐Blind Near‐Infrared Organic Vision Sensors for Imaging in Adverse Environmental Conditions

Advanced Optical Materials, EarlyView.
This work presents high‐performance visible‐blind NIR OPDs enabled by a multilayer optical modulation layer. The devices achieve strong visible‐light suppression and enhanced NIR sensitivity, enabling robust imaging in foggy or low‐light environments.
Baozhong Deng, Kean Lu, Zhouyi Lu, Yi Li, Gaoyu Dai, Luqiao Yin, Zihan Wang, Bruno Grandidier, Tao Xu, Furong Zhu   +9 more
wiley   +1 more source

Control of the Crystal Morphology and Polymorphic Form of a Dithiadiazolyl Radical Using Co-sublimation

Crystals of the elusive α-polymorph of the dithiadiazolyl radical p-NCC6F4CNSSN• (1) have been isolated from co-sublimations of 1 with a second radical, 2,6-C6H4F2CNSSN• (2). Co-sublimation of 1 and 2 also results in control of the morphology of crystals
Catharine Esterhuysen (1784869), Thalia Carstens (8274975), A. Bernard Dippenaar (14790352), Samantha G. Le Roux (14790349), Delia A. Haynes (842761)   +4 more
core   +1 more source

Observations of the northern seasonal polar cap on Mars: I. Spring sublimation activity and processes [PDF]

, 2013
Spring sublimation of the seasonal CO2 northern polar cap is a dynamic process in the current Mars climate. Phenomena include dark fans of dune material propelled out onto the seasonal ice layer, polygonal cracks in the seasonal ice, sand flow down ...
Dundas, C., Pommerol, Antoine, McEwen, A., Byrne, S., Portyankina, G., Thomas, Nicolas, Hansen, C.J., Bourke, M., Mellon, M.   +8 more
core   +1 more source

Dual‐Mode Gripper With Suction and Shape‐Adaptive Freezing Grasps

Advanced Robotics Research, EarlyView.
This study presents a dual‐mode robotic gripper that combines vacuum suction with a shape‐adaptive freezing grasp. The freezing mode uses a compliant rubber membrane, a sprayed water layer, and dry‐ice powder to generate ice‐mediated adhesion while conforming to complex geometries.
Takuma Yanagisawa, Toshihiro Nishimura, Yosuke Suzuki, Tokuo Tsuji, Tetsuyou Watanabe   +4 more
wiley   +1 more source