Results 71 to 80 of about 27,771,751 (275)

Research on karst collapse pillar imaging of water-rich area in coal mine

Gong-kuang zidonghua, 2019
In order to solve the problem that selection of time step was limited by Courant-Friedrich-Lewy stability condition in current finite-difference time-domain(FDTD) method commonly used in advanced detection transient electromagnetic method of water-rich ...
TIAN Feng, JIAO Cuicui, HAN Xiaobing
doaj   +1 more source

3D In Vitro Glioma‐Neuron‐Astrocyte Biomimetic Composites Recapitulate Key Molecular Mechanisms Linked to Glioblastoma Multiforme Pathophysiology

Advanced Functional Materials, EarlyView.
Glioblastoma multiforme is the most devastating and incurable brain tumor. To better study this disease, a 3D model is developed using a hyaluronic acid‐based hydrogel combined with a multicellular approach. This model recapitulates in vivo brain stiffness, cell‐extracellular matrix and cell‐cell interactions and the tumor's hijacking function with the
Mateo S. Andrade Mier, Esra Türker, Jessica Faber, Mike Friedrich, Zan Lamberger, Jeannette Weigelt, Panthipa Suwannakot, Benedikt Gantert, Abhinav Singh, Vanessa Moessler, Annemarie Sodmann, Nicoletta Murenu, Joachim Schenk, Natascha Schaefer, Torsten Blunk, Aldo R. Boccaccini, Tessa C. Lühmann, Jörg Tessmar, Jeremy M. Crook, Eva Tomaskovic‐Crook, Paul D. Dalton, Gregor Lang, Robert Blum, Reiner Strick, Silvia Budday, Katrin G. Heinze, Carmen Villmann   +26 more
wiley   +1 more source

Polyphosphinoborane Block Copolymer Synthesis Using Catalytic Reversible Chain‐Transfer Dehydropolymerization

Angewandte Chemie International Edition, Volume 62, Issue 3, January 16, 2023., 2023
Amphiphilic block copolymers of polyphosphinoboranes, [H2BPPhH]110‐b‐[H2BP(n‐hexyl)H]11, have been prepared by a mechanism‐led strategy of the catalytic reversible chain transfer dehydropolymerization of precursor monomers, H3B ⋅ PRH2 (R=Ph, h‐hexyl). These self‐assemble in THF:hexane solutions to form nanostructured rod‐like micelles, the morphology ...
James J. Race, Alex Heyam, Matthew A. Wiebe, J. Diego‐Garcia Hernandez, Charlotte E. Ellis, Shixing Lei, Ian Manners, Andrew S. Weller   +7 more
wiley   +1 more source

Direct-Splitting-Based CN-FDTD for Modeling 2D Material Nanostructure Problems

IEEE Open Journal of Antennas and Propagation, 2020
Incorporating a truncation of the complex-frequency-shifted perfectly matched layer (CFS-PML), the direct-splitting- based Crank-Nicolson finite-difference time-domain (CNDS-FDTD) is developed and applied to the infrared two-dimensional layered material (
Naixing Feng, Yuxian Zhang, Qingsheng Zeng, Meisong Tong, William T. Joines, Guo Ping Wang   +5 more
doaj   +1 more source

A Flexible Photovoltaic Fatigue Factor for Quantification of Mechanical Device Performance

Advanced Functional Materials, EarlyView.
The flexible Photovoltaic fatigue factor (F) quantifies mechanical and photovoltaic performance as a function of the power conversion efficiency (PCE), the strain (ε${\varepsilon}$), and the number of bending cycles (NBC) in bending tests. The strain depends on the bending radius (R) and the thicknesses of the substrate (ts) and the photovoltaic device
Lulu Sun, Kenjiro Fukuda, Ruiqi Guo, Luigi A. Castriotta, Karen Forberich, Yinhua Zhou, Takao Someya, Christoph J. Brabec, Osbel Almora   +8 more
wiley   +1 more source

Encrypted Astronomy, Astral Mythologies, and Ancient Mexican Studies in Austria, 1910-1945

Revista de Antropologia, 2019
This paper examines the beginnings of Austrian studies on ancient Mexico by analyzing the work of Damian Kreichgauer and Friedrich Röck in the early twentieth century.
Peter Rohrbacher
doaj   +1 more source

Minuscule Amounts of Pt Single Atoms Selectively Loaded on Minor (101) Facet of Anatase Crystallites Enables Outstanding Utilization Efficiency for Photocatalytic H2 Production

Advanced Functional Materials, EarlyView.
Ar–H2 annealing triggers redistribution of pre‐deposited Pt single atoms (SAs) on faceted anatase nanosheets, with selective SAs accumulation on the minor (101) facetsthus the co‐catalytic SA‐sites are positioned only where they are needed, i.e. at the electron exit facets.
Shanshan Qin, Nikita Denisov, Benedict Osuagwu, Jan Kolařík, Bidyut Bikash Sarma, Zdeněk Baďura, Patrik Schmuki   +6 more
wiley   +1 more source

Transferências e apropriações de saberes: Friedrich Bieri e a matemática para o ensino primário - Knowledge transferences and appropriations: Friedrich Bieri and the mathematic to the primary school

História da Educação, 2015
A partir da análise da obra de Friedrich Bieri (1844-1924), um suíço que emigrou para o Brasil no século 19, identificamos apropriações de saberes produzidos em países de língua alemã no ensino brasileiro.
Circe Mary Silva da Silva, Brasil
doaj  

Exploring Electronic States and Ultrafast Electron Dynamics in AlInP Window Layers: The Role of Surface Reconstruction

Advanced Functional Materials, EarlyView.
This study examines the surface characteristics of AlInP (001), crucial for advanced solar cells and photoelectrochemical devices. Using theoretical modeling and experiments, it identifies how phosphorus‐rich and indium‐rich surfaces create mid‐gap states that pin the Fermi level and influence ultrafast electron dynamics.
Mohammad Amin Zare Pour, Sahar Shekarabi, Isaac Azahel Ruiz Alvarado, Jonathan Diederich, Yuyings Gao, Agnieszka Paszuk, Dominik C. Moritz, Wolfram Jaegermann, Dennis Friedrich, Roel van de Krol, Wolf Gero Schmidt, Thomas Hannappel   +11 more
wiley   +1 more source

Towards a new media archaeology? A report on some books and tendencies

NECSUS, 2012
Over the last few years media archaeology has become an accepted method of research and has attracted an increasing number of scholars. Beginning in the 1980s with Friedrich Kittler’s groundbreaking books AUFSCHREIBESYSTEME (Discourse Networks) and ...
Petra Löffler
doaj   +1 more source