Article Per Year (5 Year)
p-Index From 2020 - 2025
0.23
P-Index
This Author published in this journals
All Journal INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Jurnal Sains Dasar
Laila Katriani
FMIPA UNY
Arts Humanities Computer Science & IT Education

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
DEVELOPMENT OF AMMONIA GAS SENSOR BASED ON QUART CRYSTAL MICROBALANCE Katriani, Laila
Jurnal Sains Dasar Vol 13, No 2 (2024): Oktober 2024
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jsd.v13i2.77623

Abstract

Ammonia gas sensor was developed and analyzed using a Quartz Crystal Microbalance (QCM) coated with Polyvinyl Acetate (PVAc) that was overlied by Chitosan. The fabrication process included the electrospinning method to produce nanofiber PVAc on the surface of a QCM. The chitosan solution was diluted to concentrations of 0.1, 0.2, and 0.3 wt%. Subsequently, the chitosan deposition was performed using the drop casting technique on QCM-PVAc. The QCM-PVAc/Chitosan 0.3% composite exhibits a sensitivity of 1.7 Hz ppm-1. Additionally, it demonstrates a linearity of 0.99 within the concentration range of 50 to 500 ppm. In the present study, the limit of detection (LOD) and limit of quantitation (LOQ) were determined to be 0,94 ppm and 2,86 ppm, respectively. The response time of the system was measured to be 7 seconds, indicating a relatively quick detection capability. Furthermore, the sensor exhibited stability during the course of the experiment. Notably, it demonstrated high selectivity towards ethanol, toluene, methanol, acetone, and water molecules. The incorporation of chitosan by drop casting has resulted in enhanced selectivity and sensitivity of the sensor.bstract in English.
OPTIMALISASI IMPLEMENTASI KURIKULUM 2013 MELALUI WORKSHOP PENGEMBANGAN LKS IPA BERPENDEKATAN GUIDED-INQUIRY UNTUK MENGEMBANGKAN THINKING SKILL DAN SIKAP ILMIAH SISWA Widowati, Asri; Anjarsari, Putri; Katriani, Laila
INOTEKS: Jurnal Inovasi Ilmu Pengetahuan,Teknologi, dan Seni Vol 19, No 1(2015)
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (429.701 KB) | DOI: 10.21831/ino.v19i1.5148

Abstract

The aims of this activity are to: (1) disseminating the results of researchfrom a team of stewards on the development of integrated science worksheetsguided inquiry based to develop thinking skills and scientific attitude in order tosupport the implementation of Kurikulum 2013; (2) improving the skills ofteachers in guiding students to form a concept (concept formation); (3) improvingtheskills of teachers in inquiry approach in worksheet; (4) improving thecreativity of teachers in developing worksheet. The target participant of this activity is 34 teacher members of MGMPIPA SMP/MTs Magelang regency. This activity is done in three stages, includingthestage of theoretical training, practical training phase and the evaluationphase. The methods used are: modeling (simulation), lectures, discus-sions, andworkshops. The results showed that the overall activity of PPM activity has beensuccessful in reaching the target activity. Most of the participants are alreadyskilled in guiding students to form a concept (concept formation) IPA. Mostparticipants also been able to apply the guided inquiry approach in studentworksheet. In addition, the final product student worksheet also shows most ofthe participants have been creative in developing worksheets with student worksheetdevelop their own (not copy and paste) and includes the development ofhigher order thinking skills in student worksheet
Co-Authors Asri Widowati Putri Anjarsari