scholarly journals Optimum Condition of Pencil Drawing Paper Sensor(PDPS) for Temperature Detecting

2017 ◽  
Vol 18 (1) ◽  
pp. 1-7
Author(s):  
Dong-Jun Kwon ◽  
Pyeong-Su Shin ◽  
Jong-Hyun Kim ◽  
Young-Min Beak ◽  
Ha-Sung Park ◽  
...  
Keyword(s):  
Optimum Condition ◽  
Pencil Drawing ◽  
Paper Sensor

New type electron gun with electrostatic and electromagnetic lenses

1978 ◽  
Vol 36 (1) ◽  
pp. 62-63
Author(s):  
T. Ichinokawa ◽  
H. Maeda
Keyword(s):  
Electron Microscopy ◽  
Electron Beam ◽  
Optimum Condition ◽  
Bias Voltage ◽  
Electron Gun ◽  
Charge Effect ◽  
Micro Fabrication ◽  
Maximum Brightness ◽  
New Type ◽  
The Ideal

I. IntroductionThermionic electron gun with the Wehnelt grid is popularly used in the electron microscopy and electron beam micro-fabrication. It is well known that this gun could get the ideal brightness caluculated from the Lengumier and Richardson equations under the optimum condition. However, the design and ajustment to the optimum condition is not so easy. The gun has following properties with respect to the Wehnelt bias; (1) The maximum brightness is got only in the optimum bias. (2) In the larger bias than the optimum, the brightness decreases with increasing the bias voltage on account of the space charge effect. (3) In the smaller bias than the optimum, the brightness decreases with bias voltage on account of spreading of the cross over spot due to the aberrations of the electrostatic immersion lens.In the present experiment, a new type electron gun with the electrostatic and electromagnetic lens is designed, and its properties are examined experimentally.

New Method of Interfacial and Micro-damage Sensing of Composites Via Pencil Lead Drawing Paper Sensor (PLDPS) and Electrical Resistance (ER) Mapping

2019 ◽  
Author(s):  
Joung-Man Park ◽  
Ha-Seung Park ◽  
Pyeong-Su Shin ◽  
Jong-Hyun Kim ◽  
Yeong-Min Baek ◽  
...  
Keyword(s):  
Electrical Resistance ◽  
New Method ◽  
Damage Sensing ◽  
Pencil Lead ◽  
Paper Sensor

OPTIMASI KONDISI EKSTRAKSI SENYAWA AKTIF ANTIOKSIDAN DARI BIJI ANGGUR

2019 ◽  
Vol 3 (2) ◽  
pp. 35
Author(s):  
Kartini Kartini ◽  
Azminah Azminah
Keyword(s):  
Free Radical ◽  
Optimum Condition ◽  
Active Compound ◽  
Grape Seed ◽  
Free Radical Scavenger ◽  
Water Bath ◽  
Radical Scavenger ◽  
Optimum Conditions ◽  
Ethanolic Solution ◽  
Reduced Pressure

In order to prepare standardized extract, optimization of extraction conditions of grape seed has been done. These conditions are type of menstrum (50, 70 and 96% of ethanolic solution), length of extraction (1, 2 and 4 hours) also method of evaporation (reduced pressure and opened air). Activity on free radical scavenger used as parameters to determine optimum conditions. Based on EC50 (concentration which scavenge 50% amount of free radical) can be concluded that optimum condition for extracting antioxidant active compound from grape seed are 70% ethanolic solution as menstrum, length of extraction 1 hour and evaporation on opened air use water bath.

PEMBUATAN SURFAKTAN DARI ASAM OLEAT

2019 ◽  
Vol 1 (3) ◽  
pp. 68
Author(s):  
Puguh Setyopratomo ◽  
Edy Purwanto ◽  
H. Yefrico ◽  
H. Yefrico
Keyword(s):  
Oleic Acid ◽  
Optimum Condition ◽  
Reaction Temperature ◽  
Catalyst Concentration ◽  
Acid Number ◽  
Esterification Reaction ◽  
Number Density ◽  
Sample Analysis ◽  
Reaction Conversion ◽  
Glycerol Mono

The synthesis of glycerol mono oleic from oleic acid and glycerol is classified as an esterification reaction. This research is aimed to study the influent of reaction temperature and catalyst concentration on reaction conversion. During the experiment the temperature of reaction mixture was varied as 110 oC, 130 oC, and 150 oC, while the catalyst concentration of 1%, 3 %, and 5% was used. The batch experiment was conducted in a glass reactor equipped with termometer, agitator, and reflux condensor. The oleic acid – glycerol mol ratio of 1 : 2 was used as a mixture feed. To maintain the reaction temperature at certain level, the oil bath was used. After the temperature of reaction mixture was reached the expected value, then H2SO4 catalyst was added to the reactor.  To measure the extent of the reaction, every 30 minutes the sample was drawn out from the reactor vessel. The sample analysis include acid number, density, and viscosity measurement. From this research the optimum condition which is the temperature of reaction of 150 oC and 1% catalyst concentration was obtained. At this optimum condition the convertion reach 86% and the analysis of other physical properties of the product show the acid number of 24.12, the density of 0.922 g/cc, and the viscosity of 118.4 cp.

A novel DNAzyme-based paper sensor for the simple visual detection of RNase H activity

2021 ◽  
Vol 331 ◽  
pp. 129400
Author(s):  
Sina Zhang ◽  
Ye Xie ◽  
Yulong Li ◽  
Jiali Ren ◽  
Ting Deng ◽  
...  
Keyword(s):  
Visual Detection ◽  
Rnase H ◽  
Paper Sensor

Investigation of optimum condition in oxygen gas-assisted laser cutting

2009 ◽  
Vol 41 (4) ◽  
pp. 454-460 ◽  
Author(s):  
H. Golnabi ◽  
M. Bahar
Keyword(s):  
Optimum Condition ◽  
Laser Cutting ◽  
Oxygen Gas

Profuse color-evolution-based fluorescent test paper sensor for rapid and visual monitoring of endogenous Cu2+ in human urine

2018 ◽  
Vol 99 ◽  
pp. 332-337 ◽  
Author(s):  
Yueqing Cai ◽  
Junhui You ◽  
Zhengyi You ◽  
Fang Dong ◽  
Shuhu Du ◽  
...  
Keyword(s):  
Human Urine ◽  
Test Paper ◽  
Visual Monitoring ◽  
Color Evolution ◽  
Paper Sensor
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