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All Journal JURNAL KIMIA SAINS DAN APLIKASI Scientiae Educatia: Jurnal Pendidikan Sains Jurnal PAJAR (Pendidikan dan Pengajaran)
Veronika P. Sinta Mbia Wae
Department Of Biology Education, Faculty Of Teacher Training And Education, Universitas Flores, East Nusa Tenggara
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Other

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Zeolite and Its Potential as a Catalyst: A Study of Alternative Mineral Development in the Process of Converting Sugar Compounds into 5-Hydroxymethylfurfural Ainun Jariyah; Veronika P. Sinta Mbia Wae; Yulius Dala Ngapa
Jurnal Kimia Sains dan Aplikasi Vol 28, No 1 (2025): Volume 28 Issue 1 Year 2025
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.28.1.16-22

Abstract

Synthesis of 5-hydroxymethylfurfural (HMF) from sugar compounds in the form of glucose using natural zeolite catalysts Ende-Nusa Tenggara Timur (NTT) through activation and modification of Cr metal impregnation processes has been carried out. This study aims to determine the potential of Ende natural zeolite as a catalyst in converting sugar compounds into HMF. The results showed that natural zeolite from Ende without activation, the process of activating acid-base compounds, and zeolite with the Cr metal embedding method had the potential as a catalyst for the transformation of sugar compounds into HMF. The resulting yield of glucose substrate was around 50.17%. Using a Cr-zeolite catalyst resulted in an HMF yield for glucose substrate of 26.78%. Overall, Ende natural zeolite can be used as a catalyst for synthesizing HMF without modification and with Cr metal impregnation.
Ethnoscience Study of Wu’u as a Local Food Ingredient for the Ende District Community Priska, Melania; Wae, Veronika Praja Sinta Mbia; Lidi, Maria Waldetrudis
Scientiae Educatia: Jurnal Pendidikan Sains Vol 13, No 2 (2024): December 2024
Publisher : Tadris Biologi Fakultas Ilmu Tarbiyah dan Keguruan IAIN SYEKH NURJATI CIREBON

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24235/sc.educatia.v13i1.18559

Abstract

Ethnoscience studies play an important role as a source of knowledge because they are based on local wisdom and involve traditions that occur in everyday life according to the contextual conditions of the local community environment so that they can be applied and absorbed by the community. Local wisdom and traditions can be in the form of local food, one of which is Wu’u. Wu’u is a local food made from corn that has existed and been passed down from generation to generation by the ancestors of the Ende Regency community as an alternative food made during times of famine and as provisions because of its long-lasting nature. However, along with the development of the era, the traditional knowledge of the community about the processing of local Wu’u food is threatened with extinction due to the lack of information passed down from previous generations due to the development of the era. This study examines the scientific concept of processing local Wu’u food with an ethnoscience approach. The method used in this study is descriptive qualitative in the form of direct observation, interviews, and documentation, as well as literature studies from journals and other reference books. The results of the study indicate that the indigenous knowledge of the Ende district community related to the process of making Wu’u consists of several stages of processing which are then transformed into scientific knowledge, so that from these stages of processing Wu’u has the opportunity as a source of learning science. The concept of scientific knowledge contained in the local Wu’u food processing process includes concepts of physics, chemistry, biology, and technology.
UTILIZING INQUIRY LEARNING MODEL TO ENHANCE STUDENTS’ ACHIEVEMENT AT GRADE VII SMPS CATHOLIC ST. ALOYSIUS WOLOTOPO Veronika P. Sinta Mbia Wae
Jurnal PAJAR (Pendidikan dan Pengajaran) Vol. 5 No. 2 (2021): March
Publisher : Laboratorium Program Studi Pendidikan Guru Sekolah Dasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/pjr.v5i2.8283

Abstract

The purpose of this study was to determine the effect of implementing inquiry learning model to improve students’ achievement on the material about plant organs at grade VII SMPS Catholic St. Aloysius Wolotopo. This research was a Classroom Action Research conducted in 2 cycles. Each cycle consisted of planning, acting, observing, and reflecting. The subjects of this study were 31 students at grade VII SMPS Catholic St. Aloysius Wolotopo for the academic year 2019/2020. Data were obtained from teachers and students. The data were collected through tests and non-tests (observation). Then, the data were analyzed by using qualitative descriptive analysis techniques. The results showed that the implementation of inquiry learning model could improve students’ achievement on the material about plant organs. This was seen from the results of the study finding that the percentage of the learning mastery increased from 61% in cycle I to 100% in cycle II. Besides, the students’ participation in the learning process also increased from 53% in cycle I to 90% in cycle II. Thus, it could be concluded that utilizing inquiry learning model improved the students’ learning achievement at grade VII SMPS Catholic St. Aloysius Wolotopo. This was because inquiry learning model stimulated students to think critically, creatively, and innovatively in order to find and solve a problem by using scientific steps.
IMPLEMENTING JAS (NATURAL SURROUNDING EXPLORATION) BASED PLANT DETERMINATION PRATICUM MODEL AT KELIMUTU NATIONAL PARK Jumilah Gago; Veronika P. Sinta Mbia Wae
Jurnal PAJAR (Pendidikan dan Pengajaran) Vol. 5 No. 2 (2021): March
Publisher : Laboratorium Program Studi Pendidikan Guru Sekolah Dasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/

Abstract

This study aimed to implement models and learning tools based on an integrated JAS (Natural Surrounding Exploration) approach in the plant taxonomy course, particularly on plant determination material. This research was conducted by utilizing a descriptive method with a qualitative approach. The research was carried out from September to November 2019 in the odd semester of the 2019/2020 academic year. The samples were chosen using a purposive sampling technique. The samples consisted of 43 students from the Biology Education Study Program at Universitas Flores who took the plant taxonomy course. The research was conducted at Kelimutu National Park. Based on the results, the use of a taxonomic learning model based on natural surrounding exploration was considered quite interesting and encouraged meaningful teaching and learning activities. In addition, based on the results of interviews with biology students, this method provided several advantages, including (1) being able to increase students’ understanding of plant identification, (2) serving as an attractive medium to trigger learning motivation because it was related to the real context around it, and (3) instilling a caring attitude and love for the surrounding natural wealth and local culture.
Co-Authors Ainun Jariyah Gago, Jumilah Maria Waldetrudis Lidi Melania Priska Yulius Dala Ngapa