Results 61 to 70 of about 1,950,549 (297)

Impact of calcium on struvite crystal size, shape and purity. [PDF]

open access: yes, 2004
Struvite precipitation occurs spontaneously in wastewater treatment plants under conditions that are influenced by many factors including concentration of , and ions, pH, temperature and mixing energy.
Hobbs, Phil   +8 more
core   +1 more source

Comparative assessment of crystallographic and cryo‐EM models in the Protein Data Bank

open access: yesFEBS Open Bio, EarlyView.
Raw data obtained by X‐ray crystallography or cryo‐EM result in experimental maps, ultimately fitted by atomic models. Although the physical principles are different, the final results can be viewed, compared, and evaluated in the same way. With cryogenic electron microscopy (cryo‐EM) on track to surpass X‐ray crystallography as the preferred method ...
Alexander Wlodawer   +7 more
wiley   +1 more source

Multiscale simulation of nanometric cutting of single crystal copper and its experimental validation [PDF]

open access: yes, 2011
In this paper a multiscale simulation study was carried out in order to gain in-depth understanding of machining mechanism of nanometric cutting of single crystal copper.
Luo, Xichun   +5 more
core   +4 more sources

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

open access: yesFEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey   +4 more
wiley   +1 more source

Cooperative control of perpendicular magnetic anisotropy via crystal structure and orientation in freestanding SrRuO3 membranes

open access: yesnpj Flexible Electronics, 2022
Flexible magnetic materials with robust and controllable perpendicular magnetic anisotropy (PMA) are highly desirable for developing flexible high-performance spintronic devices. However, it is still challenge to fabricate PMA films on polymers directly.
Zengxing Lu   +16 more
doaj   +1 more source

Crystal Dislocations with Different Orientations and Collisions [PDF]

open access: yesArchive for Rational Mechanics and Analysis, 2014
We study a parabolic differential equation whose solution represents the atom dislocation in a crystal for a general type of Peierls-Nabarro model with possibly long range interactions and an external stress. Differently from the previous literature, we treat here the case in which such dislocation is not the superpositions of transitions all occurring
S. Patrizi, VALDINOCI, ENRICO
openaire   +3 more sources

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Microstructure evolution on tensile of tungsten nanowires with different crystal orientations of [110], [112] and [111]

open access: yes四川大学学报. 自然科学版, 2017
Mechanical properties and micro-structure fracture mechanism of tungsten nanowires with crystal orientation of [110],[112] and [111] have been investigated with molecular dynamics and embedded atom methods. Simultaneously common neighbor analysis, center
LU Min, YU Dong-Hai, LIU Chang-Ju
doaj  

Influence and regulation strategy of crystal orientation on residual stress and displacement field in single-crystal turbine blades

open access: yesMaterials & Design
The fabrication of single-crystal turbine blades necessitates simultaneous and stringent control of dimensional accuracy and metallurgical quality. However, studies on the influence of crystal orientations on the residual stress and dimensional accuracy ...
Shuai Hou   +8 more
doaj   +1 more source

Magnetically-assembled micro/mesopixels exhibiting light intensity enhancement in the (012) planes of fish guanine crystals

open access: yesAIP Advances, 2018
In this study, a new method was investigated to form light-reflecting dots at the micrometer scale using the magnetic orientations of biogenic guanine crystals obtained from fish skin and scales.
T. Chikashige, M. Iwasaka
doaj   +1 more source

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