Wearable Bioimpedance Measuring Devices

The background of this research is an instrument of learning for reading comprehension which in general is still dominated by an instrument in the form of print out which makes the students’ interest to read is reduced. In addition, this instrument is usually done manually or handwritten so that the students’ work must be corrected manually and require some time to get the results. This study aims to develop instruments or measuring devices for reading comprehension in the Primary School in Pekanbaru and find out the feasibility of measuring devices for reading comprehension skills. This product is Macromedia Flash 8 based namely "MaCaMi" which stands forMari Membaca dan Memahami. The research method used was the 4D model with four stages, such as the define stage, the design phase, the develop phase, and the dessiminate stage which is limited to the third stage. The data of this study were obtained from product design expert validation questionnaire, questionnaire validated by linguists, teacher response questionnaire and students response questionnaire. The data were generated quantitatively and analyzed by using the assessment criteria to determine the product quality. The results of this study showed the assessment of product design experts in draft 1 had an average percentage of 69.61% with the appropriate category then had increased in draft 2 to 90.56% with the very feasible category. The results of the feasibility test by linguists in draft 1 with had average percentage of 95.30% with the very feasible category then increased in draft 2 to 97.20% withn the very feasible category. The results of the teacher's response to the reading comprehension measuring instrument in the Primary School in Pekanbaru developed by researchers obtained an average percentage of 93.50% with a very good category and the results of students' responses to the measuring instrument obtained an average percentage of 89.90% with a category very good. Based on these results, it can be concluded that the product developed by researchers is feasible to be used as a measure of reading comprehension ability of primary school students.

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Quasi-Optical Radio Measuring Devices for Shorter-Millimeter and Submillimeter Wavelengths, Based on the Metal-Dielectric Waveguide of Square Cross-Section

Telecommunications and Radio Engineering ◽

10.1615/telecomradeng.v68.i5.10 ◽

2009 ◽

Vol 68 (5) ◽

pp. 371-383 ◽

Cited By ~ 6

Author(s):

E. M. Kuleshov ◽

V. K. Kiselyov ◽

V. I. Bezborodov ◽

M. S. Yanovsky

Keyword(s):

Cross Section ◽

Dielectric Waveguide ◽

Radio Measuring ◽

Measuring Devices ◽

Submillimeter Wavelengths ◽

Millimeter And Submillimeter Wavelengths

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Ability of Naphthoquinondiazide Photoresists to Exothermic Decomposition

Occupational Safety in Industry ◽

10.24000/0409-2961-2020-10-90-96 ◽

2020 ◽

pp. 90-96

Author(s):

A.N. Shushpanov ◽

◽

A.Ya. Vasin ◽

V.M. Raykova ◽

G.G. Gadzhiev ◽

...

Keyword(s):

Convective Heat Exchange ◽

Inert Atmosphere ◽

Necessary Condition ◽

Critical Temperatures ◽

Good Convergence ◽

Measuring Devices ◽

Explosive Transformation ◽

Exothermic Decomposition ◽

Experimental Approaches ◽

Experimental Values

The article considers two intermediate products of positive photoresists (1,2-naphthoquinonediazide-(2)-5-sulfonic acid of monosodium salt — Dye M and 1,2-naphthoquinonediazide-(2)-5-sulfochloride — Dye N2) from the standpoint of the tendency to explosive transformation. The experimental values of flash points determined on the OTP setup were 130 °C for Dye M and 95 °C for Dye N2. These values are close to the temperatures of the beginning of intensive exothermic decomposition (132 and 111 °C, respectively) obtained by thermogravimetric analysis. In addition, this analysis showed the presence of exothermic peaks in the studied samples both in the air and in an inert atmosphere of helium, which is a necessary condition for the manifestation of a tendency to explosive transformation. To confirm the possibility of explosive transformation, the flash points of substances were also determined by the calculation method according to the formula, which is a consequence of the problem of thermal explosion during convective heat exchange with the environment, and gave a result close to the experimental one (the values were 138 and 105 °C, respectively). For this calculation the following was used: the kinetic parameters determined by the Kissinger method, the values of the density of substances determined on an automatic pycnometer, as well as the values of the heat of explosive transformation obtained with the help of the Real computer thermodynamic program. The research results confirming the tendency of the investigated compounds to explosive transformation, as well as the critical temperatures, exceeding which is unacceptable, were transferred to the production of FGUP GNTs NIOPIK to create a safe technological process, safe storage and transportation conditions. Considering the accuracy of the measuring devices, the process temperature should not exceed 125 °C for Dye M and 90 °C for Dye N2. The conducted studies and calculations show that the computational and experimental approaches have good convergence, give values in a close temperature range, and increase the reliability of the obtained results.

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