Results 41 to 50 of about 2,551,621 (293)

Influence of various process conditions on surface finishes induced by the direct metal deposition laser technique on a Ti–6Al–4V alloy [PDF]

, 2012
The direct metal deposition (DMD) with laser is a free-form metal deposition process for manufacturing dense pieces, which allows generating a prototype or small series of near net-shape structures. One of the most critical issues is that produced pieces
CARIN, Muriel, CARRON, Denis, FABBRO, Rémy, GHARBI, Myriam, GORNY, Cyril, LE MASSON, Philippe, MORVILLE, Simon, PEYRE, Patrice   +7 more
core   +6 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Surface Hardening Characterization Of Transmission Gears [PDF]

, 2011
This paper is presented to compare the transmission gear products from SME (UKM gear) and national scale manufacturer (OEM gear) especially on the surface hardening characterization. Both gears were heat treated with different methods.
Andromeda, T. (Trias), Ismail, R. (Rifky), Jamari, J. (Jamari), Sugiyanto, S. (Sugiyanto), Tauviqirrahman, M. (M)   +4 more
core  

Ab-initio density functional study of O on the Ag(001) surface

, 2003
The adsorption of oxygen on the Ag(001) is investigated by means of density functional techniques. Starting from a characterization of the clean silver surfaces oxygen adsorption in several modifications (molecularly, on-surface, sub-surface, Ag$_2$O ...
A. Eichler, Ares Fang, Asensio, Benedek, Blöchl, Bohnen, Buatier de Mongeot, Buatier de Mongeot, Buatier de Mongeot, Cipriani, Deb, Engelhardt, Erschbaumer, Giesen, Hammer, Hendriksen, Huber, J. Hafner, Kittel, Kresse, Kresse, Li, Li, Li, Lizzit, M. Gajdoš, Messerli, Methfessel, Mills, Over, Perdew, Perdew, Reuter, Rocca, Savio, Schintke, Smith, Ulitsky, Van den Hoek, Vattuone, Vitos, Wang, Weast, Wichmann, Wyckoff   +44 more
core   +1 more source

Ultrafast helicity control of surface currents in topological insulators with near-unity fidelity [PDF]

, 2015
In recent years, a class of solid state materials, called three-dimensional topological insulators, has emerged. In the bulk, a topological insulator behaves like an ordinary insulator with a band gap.
Holleitner, Alexander W., Karl, Helmut, Karnetzky, Christoph, Kastl, Christoph   +3 more
core   +2 more sources

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Quantitative Nanofriction Characterization of Corrugated Surfaces by Atomic Force Microscopy

, 2003
Atomic Force Microscopy (AFM) is a suitable tool to perform tribological characterization of materials down to the nanometer scale. An important aspect in nanofriction measurements of corrugated samples is the local tilt of the surface, which affects the
A. Podestà, Adams G., Bhushan B., Cain R., Dedkov G., Derjaguin B., G. Fantoni, Gnecco E., Grafstrom S., Kendall K., Labardi M., P. Milani, Piner R., Podestà A., Podestà A., Stark R., Varenberg M.   +16 more
core   +1 more source

Reverse graded relaxed buffers for high Ge content SiGe virtual substrates [PDF]

, 2008
An innovative approach is proposed for epitaxial growth of high Ge content, relaxed Si1−xGex buffer layers on a Si(001) substrate. The advantages of the technique are demonstrated by growing such structures via chemical vapor deposition and their ...
Dobbie, A., Fulgoni, D. J. F., Leadley, D. R. (David R.), Myranov, Maksym, Nash, Lee John, Shah, V. A.   +5 more
core   +1 more source

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Using Wavelet Packet Transform for Surface Roughness Evaluation and Texture Extraction

Sensors, 2017
Surface characterization plays a significant role in evaluating surface functional performance. In this paper, we introduce wavelet packet transform for surface roughness characterization and surface texture extraction.
Xiao Wang, Tielin Shi, Guanglan Liao, Yichun Zhang, Yuan Hong, Kepeng Chen   +5 more
doaj   +1 more source