Results 71 to 80 of about 512,442 (296)

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

Analysis and Optimization of Voltage Dynamic Control Performance of Renewable Energy Microgrid based on Grid-Forming Energy Storage

Zhongguo dianli
The configuration of grid-forming energy storage devices can effectively suppress the voltage dynamic overvoltage caused by load switching and distributed new energy output fluctuation in new energy microgrid.
Chenyu ZHANG, Jianyu YU, Mingming SHI, Ruihuang LIU   +3 more
doaj   +1 more source

Simple method of making photovoltaic junctions Patent [PDF]

, 1967
Gallium arsenide solar cell preparation by surface deposition of cuprous iodide on thin n-type polycrystalline layers and heating in iodine ...
Ellis, S. G.
core   +1 more source

Population III star formation in a Lambda CDM universe, II: Effects of a photodissociating background

, 2007
We examine aspects of primordial star formation in the presence of a molecular hydrogen-dissociating ultraviolet background. We compare a set of AMR hydrodynamic cosmological simulations using a single cosmological realization but with a range of ...
Brian W. O’Shea, Galli D., Michael L. Norman, Mizusawa H.   +3 more
core   +1 more source

Laser Metal Deposition of Aluminum Alloys 7075 and 5083 with the Addition of Volatile Alloying Elements through Powder Blending

Advanced Engineering Materials, EarlyView.
This study investigates laser metal deposition of aluminum alloys EN AW‐7075 and EN AW‐5083, using powder blending to compensate zinc and magnesium evaporation. In situ alloying and ex situ alloying with ZnAl12 and AZ91 preserve near‐standard compositions and improve mechanical properties.
Finn Bendixen, Anastasiya Toenjes, Annika Bohlen, Thomas Seefeld   +3 more
wiley   +1 more source

Research on Dynamic and Steady-State Characteristics of Grid-Following/Grid-Forming Hybrid Control Based on Model Predictive Control

IEEE Open Journal of Power Electronics
With the rapid development of renewable energy, the widespread integration of power electronic devices into power generation systems has led to increased grid impedance and reduced short-circuit ratio (SCR), causing the grid to exhibit characteristics of
Changzhou Yu, Qin Wang, Wei Fang, Yifei Wang, Haiyang Diao, Haizhen Xu, Leilei Guo   +6 more
doaj   +1 more source

Far-infrared polarimetry from the Stratospheric Observatory for Infrared Astronomy [PDF]

, 2007
Multi-wavelength imaging polarimetry at far-infrared wavelengths has proven to be an excellent tool for studying the physical properties of dust, molecular clouds, and magnetic fields in the interstellar medium.
Chuss, D. T., Crutcher, R. M., Dotson, J. L., Dowell, C. D., Harper, D. A., Hildebrand, R. H., Jones, T. J., Lazarian, A., Novak, G., Vaillancourt, J. E., Werner, M. W.   +10 more
core   +2 more sources

Design and Prototyping of Topology‐Optimized, Additively Manufactured Lightweight Components for Space Robotic Systems: A Case Study

Advanced Engineering Materials, EarlyView.
The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos, Grigorios Kostopoulos, Eleni Papadopoulou, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria N. Gkara, Chara Ch. Mitropoulou, Georgios Kazakis, Alin Munteanu, Jeremi Gancet, Nikos D. Lagaros   +11 more
wiley   +1 more source

Robustness Enhanced control for Grid-Forming PMSG wind farm

International Journal of Electrical Power & Energy Systems
This paper studies the stability and control of the wind farm utilizing the permanent magnet synchronous generator (PMSG) with grid-forming control based on virtual synchronous generator (VSG) technology. It considers the uncertainties affecting the wind
Yun Wang, Chaoyang Long, Feilong Xie, Mingkun Liang, Qiuwei Wu   +4 more
doaj   +1 more source

Material flow during the extrusion of simple and complex cross-sections using FEM [PDF]

, 2005
This paper deals with the extrusion of rod and shape sections and uses a 3D finite element model analysis (FEM) to predict the effect of die geometry on maximum extrusion load.
I. Flitta, T. Sheppard, Wood E. P., Valberg H., Subramaniyan J., Tutcher M. G.   +5 more
core   +4 more sources