scholarly journals A 3D illustrative of scanning electron microscopy on dried duku microstructural evaluation

2021 ◽  
Vol 306 ◽  
pp. 04002
Author(s):  
Laila Rahmawati ◽  
Daniel Saputra ◽  
Kaprawi Sahim ◽  
Gatot Priyanto
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Shelf Life ◽  
Exposure Time ◽  
Infrared Radiation ◽  
Visual Analysis ◽  
Control Treatment ◽  
Microstructural Evaluation ◽  
Lower Porosity ◽  
Scanning Electron

The previous research showed that the duku’s peel which dried using infrared radiation could extend the shelf life up to 25 days. The aims of this study to illustrate using 3D visual analysis on microstructural of dried duku’s peel that had dried using infrared radiation. Scanning Electron Microscopy (SEM) technique with magnifications of x100, x500, and x2500, resolution of 10 μm, 50 μm, and 100 μm in dried duku’s peel using infrared radiation at a distance of infrared emitter (IRE) 6 cm and 10 cm with an exposure temperature of 300°C for 60 s. The 3D visual illustration using Mountain Maps Program shows the porosity value on 6 cm distance of IRE, with 300°C of IRE temperature and 60 s of exposure time has 90,91%, while the 10 cm distances of IRE, 300°C of IRE temperature and 60 s of exposure time has 146,95%. It could conclude that from 3D illustrative of SEM by reconstructing a single image into pseudo-color view and a profile curve produced at drying distance of 6 cm, 300°C, and 60 s has lower porosity value, and more stable contour when compared to drying with a distance of 10 cm, 300°C, 6 s, and control treatment. This condition could confirm the previous research. The duku’s peel microtexture condition which was exposed by IRE could create a dry condition as shell-likeness that could maintain the fruit quality and prolong the shelf life.

scholarly journals The effect of infrared drying to the microstructural structure and texture of whole Duku intact skin by means of scanning electron microscopy (SEM) technique

10.5219/1234 ◽  
2020 ◽  
Vol 14 ◽  
pp. 292-299
Author(s):  
Laila Rahmawati ◽  
Daniel Saputra ◽  
Kaprawi Sahim ◽  
Gatot Priyanto
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Shelf Life ◽  
Exposure Time ◽  
Visual Analysis ◽  
Drying Process ◽  
Infrared Emitter ◽  
Infrared Method ◽  
Visual Depiction ◽  
Scanning Electron

The Infrared method has the potential to extend the shelf life of duku fruit by drying the duku’s skin into "shell likeness". Duku’s skin drying using infrared method could change the shape and characteristics of duku’s skin which would significantly affect the length of fruit shelf life. The texture of duku’s skin for the treatment of infrared emitter distance of 6 cm, temperature of 400 °C and exposure time of 80 seconds was increasing with the storage time which made the fruit inside the skin to experience a passive modified atmosphere and increase the shelf life of duku. The 3D visual depiction of the optimization result on drying process using infrared had the largest porosity and cavity value in the treatment of infrared emitter distance of 10 cm, temperature of 300 °C, and exposure time of 80 seconds. At the magnification of 2500 times, with a resolution of 10 mm, it was found that the porosity and thickness of the duku’s void were greater than duku fruit without treatment. The result of the porosity also found that drying process with the infrared emitter distance of 6 cm at temperature of 400 °C, and exposure time of 80 seconds has more stable porosity (without collapsing) which confirmed the result found on the texture of the skin. The results of scanning electron microscopy analysis and 3D visual analysis confirmed the results of optimization that had previously performed in the drying process of duku fruit using infrared method.

Microstructural Evaluation of Clayey Ceramic Incorporated with Sludge from Paper Manufacturing

2016 ◽  
Vol 881 ◽  
pp. 422-426
Author(s):  
Carlos Maurício Fontes Vieira ◽  
Regina Maria Pinheiro ◽  
Sergio Neves Monteiro
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Optical Microscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Paper Making ◽  
Paper Manufacturing ◽  
Microstructural Evaluation ◽  
Calcium Compounds ◽  
Scanning Electron

This work has for objective to evaluate the microstructure of clayey ceramic incorporated with a waste in the form of sludge generated during treatment of effluent of a paper making industry. The microstructure of ceramics incorporated with 0 and 10 wt.% of waste, and then fired at 600°C, was evaluated by optical microscopy, scanning electron microscopy and X-ray diffraction. The results showed that the waste changes the microstructure of the clayey ceramic increasing the porosity, as well as forming new crystalline phases, mainly with calcium compounds.

scholarly journals Behavior in the electric current curve by changing the anodizing area

Respuestas ◽  
2021 ◽  
Vol 25 (2) ◽  
pp. 117-124
Author(s):  
Henry Mauricio-Mateus ◽  
José Barba-Ortega ◽  
Miryam Rincón-Joya
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electric Current ◽  
Exposure Time ◽  
Current Density ◽  
Chemical Solution ◽  
Current Curve ◽  
Circular Arrangement ◽  
Over Time ◽  
Scanning Electron

In this work, we studied the change in the electric current and the length of the nanotubes depending on the area and the exposure time in the anodizing process. Over time the anodizing area was changed with a rate of 0.5 cm2 to 2.5 cm2 using a total anodizing time of 60 min, using a chemical solution (2ml  /3 ml /0.30g ) and maintaining a constant anodizing voltage equal to 20 V. The behavior in the nanostructures was recorded by the evolution of the current density as a function of the anodizing time. The morphology of the nanostructures was analyzed by means of scanning electron microscopy (SEM). With the use of the Imagej program. The size, length and diameter of the titanium nanostructures are obtained. The sample that presented the best behavior was that of an anodizing area of ​​1.5 cm2  and an anodizing time of 36 min. This presents a surface where open nanotubes are observed in the upper part with a vertical length of 0.23 μm and a pattern thereof organized in a circular arrangement with a diameter of 0.035 μm. It was observed that increasing the area under these anodizing conditions decreased the length of the nanotubes. The mobility of the loads was always greater with the area of ​​exposure, which is observed in the increase of the current

scholarly journals Pilot investigation into osteotome hard surface coating and cutting-edge degradation

2020 ◽  
Author(s):  
David White ◽  
Jim Bartley ◽  
Christopher Whittington ◽  
Lorenzo M. G. Garcia ◽  
Kaushik Chand ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Titanium Nitride ◽  
Visual Inspection ◽  
Visual Analysis ◽  
Electroless Nickel ◽  
Cutting Edge ◽  
Edge Sharpness ◽  
Blade Edge ◽  
Scanning Electron

Abstract BackgroundOsteotomes are bone cutting tools commonly reused in orthopedic surgical procedures. Despite undergoing rigorous cleaning, visual inspection and sterilization procedures between every use, the condition of the cutting blade edge is commonly not qualitatively assessed. Subjective feedback from surgeons suggests a large variation in osteotome cutting edge sharpness is found during use. This study seeks to investigate the retention of osteotome cutting-edge sharpness by comparing the wear resistance of as-supplied, electroless nickel, and titanium nitride coated osteotomes following a series of bone cutting tests.MethodsChanges in edge sharpness were assessed using visual inspection, depth penetration testing that quantified change in the blade sharpness index and scanning electron microscopy visual analysis. Visual inspection of each osteotome blade edge was then compared to qualitative blade sharpness index measurement.ResultsAfter use, no cutting-edge damage or change in blade sharpness was detected by visual examination of all three osteotomes however the as-supplied osteotome demonstrated 50% loss of blade sharpness index compared to 30% and 15% reduction for the electroless nickel and titanium nitride coated osteotomes respectively. This finding was supported by scanning electron microscopy evaluation that found greater mechanical damage had occurred along the cutting-edge of the as-supplied osteotome compared to the two coated with wear resistant materials.ConclusionsThe rapid loss of blade sharpness found in the as-supplied osteotome supports the degradation in cutting performance frequently reported by surgeons. The findings from this study demonstrates blade sharpness index better detects cutting edge wear compared to visual inspection. Results from this pilot study also suggest the coating of osteotomes in hard-wearing biocompatible materials assists in retaining cutting edge sharpness over multiple uses. Further study using a larger sample size is required to validate these findings.

Foam rubber from centrifuged and creamed latex

2019 ◽  
Vol 39 (4) ◽  
pp. 336-342 ◽  
Author(s):  
Rungrassamee Suksup ◽  
Yu Sun ◽  
Udomlak Sukatta ◽  
Wirasak Smitthipong
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Positive Impact ◽  
Rubber Content ◽  
Foam Rubber ◽  
Lower Porosity ◽  
Microscopy Images ◽  
Scanning Electron

Abstract The main aim of this work is to produce foam rubber using the Dunlop process from in-house creamed latex and compare it with commercial centrifuged latex. The dry rubber content of creamed latex is higher than that of fresh natural latex and traditional centrifuged latex. The creaming agent plays a major role during the preparation of foam rubber and therefore defines the density as well as the elastic and mechanical properties of the final product. Scanning electron microscopy images show lower porosity in rubber foam made from creamed latex compared to that from centrifuged latex. This methodology should have a highly positive impact on the rubber community in both upstream and downstream rubber industries.

scholarly journals Impact of Indocyanine Green Concentration, Exposure Time, and Degree of Dissolution in Creating Toxic Anterior Segment Syndrome: Evaluation in a Rabbit Model

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Tamer Tandogan ◽  
Ramin Khoramnia ◽  
Gerd Uwe Auffarth ◽  
Michael Janusz Koss ◽  
Chul Young Choi
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Indocyanine Green ◽  
Exposure Time ◽  
Anterior Segment ◽  
Rabbit Model ◽  
Ultrasound Pachymetry ◽  
Toxic Anterior Segment Syndrome ◽  
Scanning Electron

Purpose. To investigate the role of indocyanine green (ICG) dye as a causative material of toxic anterior segment syndrome (TASS) in an experimental rabbit model.Method. Eight eyes of four rabbits were allocated to this study. Capsular staining was performed using ICG dye, after which the anterior chamber was irrigated with a balanced salt solution. The effects of different concentrations (control, 0.25, 0.5, and 1.0%), exposure times (10 and 60 seconds), and the degree of dissolution (differently vortexed) were investigated. The analysis involved anterior segment photography, ultrasound pachymetry, prostaglandin assay (PGE2Parameter Assay, R&D systems, Inc.), and scanning electron microscopy of each iris.Result. There was no reaction in the control eye. A higher aqueous level of PGE2and more severe inflammatory reaction were observed in cases of eyes with higher concentration, longer exposure time, and poorly dissolved dye. Additionally, scanning electron microscopy revealed larger and coarser ICG particles.Conclusion. TASS occurrence may be associated with the concentration, exposure time, and degree of dissolution of ICG dye during cataract surgery.

scholarly journals Infiltration Behavior Of Mechanical Alloyed 75 wt% Cu-25 wt% WC Powders Into Porous WC Compacts

2015 ◽  
Vol 60 (2) ◽  
pp. 1565-1568
Author(s):  
A. Şelte ◽  
B. Özkal
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Mechanical Alloying ◽  
High Energy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Microstructural Evaluation ◽  
Infiltration Behavior ◽  
Infiltration Method ◽  
Scanning Electron

AbstractIn this work infiltration behavior of mechanical alloyed 75 wt% Cu – 25 wt% WC powders into porous WC compacts were studied. Owing to their ductile nature, initial Cu powders were directly added to mechanical alloying batch. On the other hand initial WC powders were high energy milled prior to mechanical alloying. Contact infiltration method was selected for densification and compacts prepared from processed powders were infiltrated into porous WC bodies. After infiltration, samples were characterized via X-Ray diffraction studies and microstructural evaluation of the samples was carried out via scanning electron microscopy observations. Based on the lack of solubility between WC and Cu it was possible to keep fine WC particles in Cu melt since solution reprecipitation controlled densification is hindered. Also microstructural characterizations via scanning electron microscopy confirmed that the transport of fine WC fraction from infiltrant to porous WC skeleton can be carried out via Cu melt flow during infiltration.

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