Gas-phase combustion behavior propagating on the outer surface of highly densified biomass cylindrical briquette

2018 ◽  
Vol 2018 (0) ◽  
pp. 0016
Author(s):  
Hiroyuki Ito ◽  
Yuto Kikuchi ◽  
Kou Saito ◽  
Masayoshi Miura
Keyword(s):  
Gas Phase ◽  
Outer Surface ◽  
Combustion Behavior ◽  
Densified Biomass

scholarly journals Evaluation of the supramolecular interaction of Congo red with cucurbiturils using mass spectrometry and spectroscopic methods

2020 ◽  
Vol 44 (6) ◽  
pp. 2587-2596 ◽  
Author(s):  
Ana L. Costa ◽  
Ana C. Gomes ◽  
André D. Lopes ◽  
José P. Da Silva ◽  
Martyn Pillinger ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Aqueous Solutions ◽  
Gas Phase ◽  
Outer Surface ◽  
Congo Red ◽  
Spectroscopic Methods ◽  
Supramolecular Interaction ◽  
Esi Ms

Cucurbit[n]urils decolourise aqueous solutions of Congo red by forming outer-surface adducts, which are also detected in gas-phase ESI-MS studies.

Effect of temperature on "saturation currents" in gas phase radiolysis cells: the conductance of Pyrex and other cell materials

1969 ◽  
Vol 47 (2) ◽  
pp. 191-194
Author(s):  
R. M. Byrtus ◽  
G. R. Freeman
Keyword(s):  
Gamma Radiation ◽  
Gas Phase ◽  
Outer Surface ◽  
Absorbed Dose ◽  
Effect Of Temperature ◽  
Total Current ◽  
Saturation Current ◽  
Absorbed Dose Rate ◽  
Phase Saturation ◽  
Ionized Air

When gas-filled Pyrex cells were heated above about 50°, the saturation currents obtained in a gamma radiation field apparently decreased. At temperatures above 100° good saturation currents were not obtained. At temperatures below 50° the conductance of Pyrex was negligible, and "true" saturation currents were measured. At temperatures greater than 50° the Pyrex conducted appreciably, so the total current flowing in the circuit was appreciably greater than the gas phase saturation current (absorbed dose rate 1010–1013 eV/ml s). If the outer surface of the cell was grounded, for example by ionized air, part of the current by-passed the measuring ammeter, thereby decreasing the "apparent" saturation current. The magnitude of the temperature effect was greatly decreased by wrapping the cell with teflon tape, thereby insulating it from the ionized air.The effect of temperature on apparent saturation currents measured in quartz cells was much smaller than that in Pyrex cells, because the conductance of quartz was much less than that of Pyrex at temperatures above 50°.When a metal cell that contains a Pyrex insulator between the electrodes is used, the temperature of the Pyrex should be kept below about 50°.

scholarly journals Influence of biomass raw materials on the flaming combustion behavior of highly densified biomass briquette

2019 ◽  
Vol 85 (879) ◽  
pp. 19-00208-19-00208
Author(s):  
Hiroyuki ITO ◽  
Ryo TOKUNAGA ◽  
Shumpei NOGAMI ◽  
Masayoshi MIURA
Keyword(s):  
Raw Materials ◽  
Combustion Behavior ◽  
Flaming Combustion ◽  
Densified Biomass

A scanning electron microscopic study on dissolving process of cholesterol gallstones by chenodeoxycholic acid (CDCA)

1978 ◽  
Vol 36 (2) ◽  
pp. 522-523
Author(s):  
T. Kanetaka ◽  
M. Cho ◽  
S. Kawamura ◽  
T. Sado ◽  
K. Hara
Keyword(s):  
Electron Microscope ◽  
Chenodeoxycholic Acid ◽  
Outer Surface ◽  
Electron Microscopic ◽  
Cholesterol Gallstones ◽  
The Core ◽  
Scanning Electron Microscopic Study ◽  
Scanning Electron Microscopic ◽  
Acceleration Voltage ◽  
Scanning Electron

The authors have investigated the dissolution process of human cholesterol gallstones using a scanning electron microscope(SEM). This study was carried out by comparing control gallstones incubated in beagle bile with gallstones obtained from patients who were treated with chenodeoxycholic acid(CDCA).The cholesterol gallstones for this study were obtained from 14 patients. Three control patients were treated without CDCA and eleven patients were treated with CDCA 300-600 mg/day for periods ranging from four to twenty five months. It was confirmed through chemical analysis that these gallstones contained more than 80% cholesterol in both the outer surface and the core.The specimen were obtained from the outer surface and the core of the gallstones. Each specimen was attached to alminum sheet and coated with carbon to 100Å thickness. The SEM observation was made by Hitachi S-550 with 20 kV acceleration voltage and with 60-20, 000X magnification.

A SEM and Light Microscope Study of the Epidermal Leaf Structures of the Carnivorous Plant, Sarracenia purpurea, L.

1971 ◽  
Vol 29 ◽  
pp. 358-359
Author(s):  
B. J. Panessa ◽  
J. F. Gennaro
Keyword(s):  
Methylene Blue ◽  
Toluidine Blue ◽  
Outer Surface ◽  
Microscope Study ◽  
Light Microscope ◽  
Carnivorous Plant ◽  
Sarracenia Purpurea ◽  
Inner Surface

Tissue from the hood and sarcophagus regions were fixed in 6% glutaraldehyde in 1 M.cacodylate buffer and washed in buffer. Tissue for SEM was partially dried, attached to aluminium targets with silver conducting paint, carbon-gold coated(100-500Å), and examined in a Kent Cambridge Stereoscan S4. Tissue for the light microscope was post fixed in 1% aqueous OsO4, dehydrated in acetone (4°C), embedded in Epon 812 and sectioned at ½u on a Sorvall MT 2 ultramicrotome. Cross and longitudinal sections were cut and stained with PAS, 0.5% toluidine blue and 1% azure II-methylene blue. Measurements were made from both SEM and Light micrographs.The tissue had two structurally distinct surfaces, an outer surface with small (225-500 µ) pubescent hairs (12/mm2), numerous stoma (77/mm2), and nectar glands(8/mm2); and an inner surface with large (784-1000 µ)stiff hairs(4/mm2), fewer stoma (46/mm2) and larger, more complex glands(16/mm2), presumably of a digestive nature.

Residual Gas Reactions in the Electron Microscope: I. Qualitative Observations on the Water Gas Reaction

1968 ◽  
Vol 26 ◽  
pp. 292-293
Author(s):  
Richard E. Hartman ◽  
Roberta S. Hartman ◽  
Peter L. Ramos
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Gas Phase ◽  
Absolute Temperature ◽  
Residual Gas ◽  
Gas Reactions ◽  
Image Position ◽  
The Right ◽  
Water Gas ◽  
Thinning Rate

The action of water and the electron beam on organic specimens in the electron microscope results in the removal of oxidizable material (primarily hydrogen and carbon) by reactions similar to the water gas reaction .which has the form:The energy required to force the reaction to the right is supplied by the interaction of the electron beam with the specimen.The mass of water striking the specimen is given by:where u = gH2O/cm2 sec, PH2O = partial pressure of water in Torr, & T = absolute temperature of the gas phase. If it is assumed that mass is removed from the specimen by a reaction approximated by (1) and that the specimen is uniformly thinned by the reaction, then the thinning rate in A/ min iswhere x = thickness of the specimen in A, t = time in minutes, & E = efficiency (the fraction of the water striking the specimen which reacts with it).

Cristal-growth dynamics of n-doped gaAs

1992 ◽  
Vol 50 (2) ◽  
pp. 1544-1545
Author(s):  
Pham V. Huong ◽  
Stéphanie Bouchet ◽  
Jean-Claude Launay
Keyword(s):  
Crystal Growth ◽  
Spatial Resolution ◽  
Epitaxial Layer ◽  
Outer Surface ◽  
Gaas Substrate ◽  
Structural Modification ◽  
Growth Dynamics ◽  
Argon Laser ◽  
High Anisotropy ◽  
Crystal Gaas

Microstructure of epitaxial layers of doped GaAs and its crystal growth dynamics on single crystal GaAs substrate were studied by Raman microspectroscopy with a Dilor OMARS instrument equipped with a 1024 photodiode multichannel detector and a ion-argon laser Spectra-Physics emitting at 514.5 nm.The spatial resolution of this technique, less than 1 μm2, allows the recording of Raman spectra at several spots in function of thickness, from the substrate to the outer deposit, including areas around the interface (Fig.l).The high anisotropy of the LO and TO Raman bands is indicative of the orientation of the epitaxial layer as well as of the structural modification in the deposit and in the substrate at the interface.With Sn doped, the epitaxial layer also presents plasmon in Raman scattering. This fact is already very well known, but we additionally observed that its frequency increases with the thickness of the deposit. For a sample with electron density 1020 cm-3, the plasmon L+ appears at 930 and 790 cm-1 near the outer surface.

High spatial resolution AEM observations of yttrium segregation in chromia scales grown on Co-45%Cr

1986 ◽  
Vol 44 ◽  
pp. 518-519
Author(s):  
K. Przybylski ◽  
A. J. Garratt-Reed ◽  
G. J. Yurek
Keyword(s):  
Spatial Resolution ◽  
Outer Surface ◽  
Maximum Concentration ◽  
High Spatial Resolution ◽  
Reactive Elements ◽  
Chromia Scales

The addition of so-called “reactive” elements such as yttrium to alloys is known to enhance the protective nature of Cr2O3 or Al2O3 scales. However, the mechanism by which this enhancement is achieved remains unclear. An A.E.M. study has been performed of scales grown at 1000°C for 25 hr. in pure O2 on Co-45%Cr implanted at 70 keV with 2x1016 atoms/cm2 of yttrium. In the unoxidized alloys it was calculated that the maximum concentration of Y was 13.9 wt% at a depth of about 17 nm. SIMS results showed that in the scale the yttrium remained near the outer surface.

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