Characterization of grown-in dislocations in high-quality glucose isomerase crystals by synchrotron monochromatic-beam X-ray topography

2017 ◽  
Vol 468 ◽  
pp. 299-304 ◽  
Author(s):  
Ryo Suzuki ◽  
Haruhiko Koizumi ◽  
Kenichi Kojima ◽  
Seijiro Fukuyama ◽  
Yasutomo Arai ◽  
...  
Keyword(s):  
Glucose Isomerase ◽  
High Quality ◽  
Monochromatic Beam ◽  
X Ray

X‐ray characterization of extremely high quality (Sr,Ba)TiO3 films grown by pulsed laser deposition

1995 ◽  
Vol 66 (13) ◽  
pp. 1605-1607 ◽  
Author(s):  
S. B. Qadri ◽  
J. S. Horwitz ◽  
D. B. Chrisey ◽  
R. C. Y. Auyeung ◽  
K. S. Grabowski
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
High Quality ◽  
X Ray

scholarly journals Micro-focused X-ray diffraction characterization of high-quality [6,6]-phenyl-C61-butyric acid methyl ester single crystals without solvent impurities

2013 ◽  
Vol 1 (36) ◽  
pp. 5619 ◽  
Author(s):  
Giuseppe Paternò ◽  
Anna J. Warren ◽  
Jacob Spencer ◽  
Gwyndaf Evans ◽  
Victoria García Sakai ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Single Crystals ◽  
Butyric Acid ◽  
Acid Methyl Ester ◽  
X Ray Diffraction ◽  
High Quality ◽  
X Ray ◽  
Acid Methyl ◽  
Butyric Acid Methyl Ester

scholarly journals Characterization of bentonite clay from 'Greda' deposit

2011 ◽  
Vol 5 (2) ◽  
pp. 97-101 ◽  
Author(s):  
Nadezda Stankovic ◽  
Mihovil Logar ◽  
Jelena Lukovic ◽  
Jelena Pantic ◽  
Miljana Miljevic ◽  
...  
Keyword(s):  
Ceramic Industry ◽  
Bentonite Clay ◽  
Nitrogen Adsorption ◽  
Raw Material ◽  
X Ray Diffraction ◽  
High Quality ◽  
X Ray ◽  
High Silica ◽  
Representative Samples

Based on mineralogical and technological investigations of the deposit 'Greda' important characteristics of bentonite clay were determined. Representative samples of the deposit were characterized with X-ray diffraction, low-temperature nitrogen adsorption, chemical analysis, differential thermal analysis and scanning electron microscopy. It was determined that the main mineral is montmorillonite and in subordinate quantities kaolinite, quartz and pyrite. The chemical composition generally shows high silica and alumina contents in all samples and small quantities of Fe3+, Ca2+ and Mg2+ cations. Based on technological and mineralogical research, bentonite from this deposit is a high-quality raw material for use in the ceramic industry.

scholarly journals Polysaccharide-Based Injection Matrix for Serial Crystallography

2020 ◽  
Vol 21 (9) ◽  
pp. 3332 ◽  
Author(s):  
Ki Hyun Nam
Keyword(s):  
Room Temperature ◽  
Glucose Isomerase ◽  
Viscous Medium ◽  
Specific Protein ◽  
Wheat Starch ◽  
X Ray ◽  
Crystallization Solution ◽  
Serial Crystallography ◽  
X Ray Background

Serial crystallography (SX) provides an opportunity to observe the molecular dynamics of macromolecular structures at room temperature via pump-probe studies. The delivery of crystals embedded in a viscous medium via an injector or syringe is widely performed in synchrotrons or X-ray free-electron laser facilities with low repetition rates. Various viscous media have been developed; however, there are cases in which the delivery material undesirably interacts chemically or biologically with specific protein samples, or changes the stability of the injection stream, depending on the crystallization solution. Therefore, continued discovery and characterization of new delivery media is necessary for expanding future SX applications. Here, the preparation and characterization of new polysaccharide (wheat starch (WS) and alginate)-based sample delivery media are introduced for SX. Crystals embedded in a WS or alginate injection medium showed a stable injection stream at a flow rate of < 200 nL/min and low-level X-ray background scattering similar to other hydrogels. Using these media, serial millisecond crystallography (SMX) was performed, and the room temperature crystal structures of glucose isomerase and lysozyme were determined at 1.9–2.0 Å resolutions. WS and alginate will allow an expanded application of sample delivery media in SX experiments.

Epitaxial Growth of III-Nitride Layers on Aluminum Nitride Substrates

1998 ◽  
Vol 537 ◽  
Author(s):  
L.J. Schowalter ◽  
Y. Shusterman ◽  
R. Wang ◽  
I. Bhat ◽  
G. Arunmozhi ◽  
...  
Keyword(s):  
Epitaxial Growth ◽  
Electrical Characterization ◽  
High Quality ◽  
X Ray ◽  
Force Microscopy ◽  
Ion Channeling ◽  
Atomic Force ◽  
Nitride Layers ◽  
Very High

AbstractHigh quality, epitaxial growth of AlN and AlxGal-xN by OMVPE has been demonstrated on single-crystal AIN substrates. Here we report characterization of epitaxial layers on an a-face AlN substrate using Rutherford Backscattering/ion channeling, atomic force microscopy (AFM), x-ray rocking curves, and preliminary electrical characterization. Ion channeling along the [1010] axis gives a channeling minimum yield of 1.5% indicating a very high quality epitaxial layer.

Characterization of soft-X-ray detectors fabricated with high-quality CVD diamond thin films

2008 ◽  
Vol 254 (19) ◽  
pp. 6277-6280 ◽  
Author(s):  
Y. Iwakaji ◽  
M. Kanasugi ◽  
O. Maida ◽  
Y. Takeda ◽  
Y. Saitoh ◽  
...  
Keyword(s):  
Thin Films ◽  
Cvd Diamond ◽  
High Quality ◽  
X Ray ◽  
Diamond Thin Films

scholarly journals Molecular, Structural, and Rheological Characterization of Camel Skin Gelatin Extracted Using Different Pretreatment Conditions

Foods ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1563
Author(s):  
Samson Olumide Fawale ◽  
Ahlam Abuibaid ◽  
Fathalla Hamed ◽  
Phanat Kittiphattanabawon ◽  
Sajid Maqsood
Keyword(s):  
Fourier Transformation ◽  
Gel Strength ◽  
Optimum Conditions ◽  
X Ray Diffraction ◽  
Rheological Characterization ◽  
High Quality ◽  
X Ray ◽  
Diffraction Peaks ◽  
Pretreatment Conditions

Optimum conditions for high-quality gelatin recovery from camel skin and its molecular, structural, and rheological characterization were carried out in this study. Increased yield and gel strength were recorded, with an increase in camel skin pretreatment times of 6 to 42 h and 0.50 and 0.75 M-NaOH. Gelatin from skin pretreated with 0.75 and 0.5 M-NaOH for 42 h showed the highest yield (22.60%) and gel strength (365.5 g), respectively. Structural characterization by Fourier transformation infrared spectra, X-ray diffraction, and nuclear magnetic resonance indicated that all gelatins possessed major peaks in the amide region, and diffraction peaks around 22° were basically amorphous. The temperatures for gelling and melting ranged from 20.9 °C to 25.8 °C and 27.34 °C to 30.49 °C. Microstructure revealed loose network with more voids in gelatin from skin pretreated with 0.5 and 0.75 M-NaOH for 6 h, while a highly cross-linked network and less voids were observed in those pretreated with 0.75 M-NaOH for 24 h and 0.5 M-NaOH for 42 h. The results reveal that great potential exists in producing halal gelatin with excellent quality and functionality from camel skin.

scholarly journals Synthesis and Characterization of Boehmite Nanofibers

2008 ◽  
Vol 2008 ◽  
pp. 1-4 ◽  
Author(s):  
Jing Yang ◽  
Ray L. Frost
Keyword(s):  
Emission Spectroscopy ◽  
Analytical Techniques ◽  
Infrared Emission ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
High Quality ◽  
X Ray ◽  
Clear Cut ◽  
Scanning Electron

Boehmite nanofibers of high quality were synthesized through a wet-gel conversion process without the use of a surfactant. The long nanofibers of boehmite with clear-cut edges were obtained by steaming the wet-gel precipitate at 170∘C for 2 days. Analytical techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), infrared emission spectroscopy (IES), as well as Raman spectroscopy were used to characterize the products.

X-ray characterization of high quality AlN epitaxial layers: effect of growth condition on layer structural properties

2003 ◽  
Vol 0 (7) ◽  
pp. 2014-2018 ◽  
Author(s):  
Q. S. Paduano ◽  
A. J. Drehman ◽  
D. W. Weyburne ◽  
J. Kozlowski ◽  
J. Serafinczuk ◽  
...  
Keyword(s):  
Structural Properties ◽  
Growth Condition ◽  
Epitaxial Layers ◽  
High Quality ◽  
X Ray

Solution Growth and Characterization of Icosahedral Boron Arsenide (B12As2)

2011 ◽  
Vol 1307 ◽  
Author(s):  
C.E. Whiteley ◽  
Y. Zhang ◽  
A. Mayo ◽  
J.H. Edgar ◽  
Y. Gong ◽  
...  
Keyword(s):  
Room Temperature ◽  
Solution Growth ◽  
High Quality ◽  
Burgers Vector ◽  
X Ray ◽  
Dislocation Densities ◽  
Boron Arsenide ◽  
Viable Method ◽  
Molten Nickel

ABSTRACTThe crystallographic properties of bulk icosahedral boron arsenide (B12As2) crystals grown by precipitation from molten nickel solutions were characterized. Large crystals (5-8 mm) were produced by dissolving the boron in nickel at 1150°C for 48-72 hours, reacting with arsenic vapor, and slowly cooling to room temperature. The crystals varied in color from black and opaque to clear and transparent. Raman spectroscopy, x-ray topography (XRT), and defect selective etching revealed that the B12As2 single crystals were high quality with low dislocation densities. Furthermore, XRT results suggest that the major face of the plate-like crystals was (111) type, while (100), (010) and (001) type facets were also observed optically. The predominant defect in these crystals was edge character growth dislocations with a <001> Burgers vector, and <-110> line direction. In short, XRT characterization shows that solution growth is a viable method for producing good quality B12As2 crystals.

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