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All Journal Jurnal Natur Indonesia Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Akademika Kimia Jurnal Gizi Kerja dan Produktivitas Mattawang: Jurnal Pengabdian Masyarakat Media Eksakta Jurnal Akademika Kimia Sovereign: International Journal of Law Aurelia: Jurnal Penelitian dan Pengabdian Masyarakat Indonesia Jurnal Banua Oge Tadulako Jurnal Akademika Kimia
Tahril
Program Studi Pendidikan Kimia, Universitas Tadulako, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Effect of Problem Based Learning Model on the Chemical Reaction Rate toward Critical Thinking Ability of Students Kasmiati Kasmiati; Tahril Tahril; Vanny M. A. Tiwow
Jurnal Akademika Kimia Vol. 9 No. 4 (2020)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2020.v9.i4.pp183-190

Abstract

This study aimed to identify the effect of the problem-based learning model on the reaction rate toward critical thinking abilities of students of MAN 1 Palu. This study was a quasi-experiment with a pretest-posttest control group design. Sampling was taken by purposive sampling technique with the sample of class XI MIA 3 as the experimental group (n = 18) and class XI MIA 4 as the control group (n = 14). The results of the study and data analysis obtained an average value of students' critical thinking skills from the questionnaire that the experimental group was 82.95%, higher than the control group (73.43%). The average value of students' critical thinking skills from the description test showed that the experimental group was 79.42%, higher than the control group (58.02%). Students' critical thinking skills data using parametric statistical analysis with t-test (right-party t-test) obtained tcount > ttable was 6.83 > 2.04 which corresponds to the H1 acceptance area, therefore H1 was accepted and H0 rejected. This means that students 'critical thinking skills in the experimental group were higher than in the control group. The results of this study concluded that the problem-based learning model had a significant influence on the thinking ability of students in grade XI on the reaction rate at MAN 1 Palu.
Application of Inquiry Learning Model with Lesson Study (LS) Pattern on Student Learning Outcomes in Colloid System Material Nur H. Wahyuni; Suherman Suherman; Tahril Tahril
Jurnal Akademika Kimia Vol. 10 No. 2 (2021)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2021.v10.i2.pp72-77

Abstract

This study aimed to know the effect of applying the inquiry learning model with lesson study (LS) pattern on student learning outcomes in colloid system material in class XI SMA Negeri 1 Sigi. This type of research was a quasi-experiment with an equivalent post-test design. Samples were determined by the purposive sampling method. The sample used in this study was students of class XI MIA 3 as an experimental class with 24 students and XI MIA 4 students as a control class with 20 students. The processing of student learning outcomes data used a non-parametric analysis of the Mann-Whitney U-Test test. The results showed that the mean value of the experimental class was higher than the control class, which was 23.98>15.82. Results of statistical analysis sig. 2-tailed was (0.019) <0.05 and Zcalculation (-2.336) < Ztable (-1.96), based on decision-making criteria, it stated if the value of -Zcalculation<Ztable then H0 is rejected. Therefore, it can be concluded that there is the effect of applying the inquiry learning model with lesson study (LS) pattern on student learning outcomes in colloid system material in class XI SMA Negeri 1 Sigi.
Synthesis and Characterization of Activated Carbon from Waste Compedak Fruit (Artocarpus Champeden) Activated H3PO4 as Adsorbent of Methylene Blue Catherina Bijang; Matheis F. J. D. P. Tanasale; Dewi Sri; Tahril Tahril; Thamrin Azis
Jurnal Akademika Kimia Vol. 11 No. 1 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i1.pp56-63

Abstract

Synthesis of activated carbon from cempedak peel waste is carried out to utilize biomass waste. This study aimed to synthesize and characterize activated carbon from cempedak peel waste. The synthesis was carried out by chemical activation using phosphoric acid with a dry impregnation ratio of 1:4 (g sample:g H3PO4). Samples impregnated for 24 hours were then heated at 250℃—and then calcined at 350℃ and 450℃. The XRD and FTIR characterization results indicated that the activated carbon obtained had an amorphous structure and the activated carbon obtained had hydroxyl, carbonyl, and carboxylic groups. Activated carbon with the highest yield was obtained at a temperature of 350, namely 43%. The results of determining the water content of activated carbon obtained are 8.36% at 350 0C and 7.1% at 450 ℃. The value of water content and ash content of activated carbon from the skin of this cempedak fruit has met the Indonesian National Standard (SNI 06-3730-1995). The best-activated carbon yield was at a calcination temperature of 450, with the percentage of adsorption efficiency on methylene blue of 98.88%.
Equilibrium and Adsorption Kinetic Study of Metal Ni(II) using Persimmon Tannin Gel La O. Ahmad; Ulfa H. Syam; Laode A. Kadir; Nohong Nohong; Muh Natsir; Nasriadi Dali; Imran Imran; Tahril Tahril; Thamrin Azis
Jurnal Akademika Kimia Vol. 11 No. 2 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i2.pp111-116

Abstract

Heavy metal concentration exceeding the threshold amount is hazardous to the environment, so it needs some treatment. The study aimed to know the capacity and kinetics of adsorption. This study used the adsorption method to remove the heavy metal ion Ni(II) using persimmon tannin gel. Influences of time contact, pH, and ion concentration in the adsorption process were also investigated. Results showed optimum adsorption at 60 minutes of time contact and pH 5. Variation of concentration made the adsorption decrease as metal ion Ni(II) concentration increased. The maximum adsorption capacity was 23.14 mg/g by using pseudo-second-order adsorption kinetic model.
The Influence of Problem-Based Learning Model Learning Assisted by Science Media Kits on Student Learning Outcomes in Hydrocarbons Ulfiana Ulfiana; Minarni R. Jura; Tahril Tahril
Jurnal Akademika Kimia Vol. 11 No. 2 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i2.pp105-110

Abstract

This study aimed to determine the effect of the problem-based learning model assisted by KIT IPA media on student learning outcomes in hydrocarbon material in class XI IPA SMA N 6 Palu. The type of research used was Pre-experiment with Alternative Treatment design, Post-Test-Only with nonequivalent Groups Design. Sampling was done using the purposive sampling technique with samples consisting of class XI IPA 4 as experimental class I and class XI IPA 2 as experimental class II. The research instruments were the learning outcomes tests, RPP, and observation sheets previously validated in theory and empirically. Testing student learning outcomes used t-test analysis two (two parties) with a prerequisite test: normality and homogeneity tests, then the t-test hypothesis test (two parties) was applied. Based on the research results and analysis of the research data, the value of student learning outcomes in the post-test of the experimental class I was 65.7 and for the exploratory class II was 59.9, while the standard deviation was 10.4 and 9.7, respectively. The results of the statistical testing of hypothesis testing obtained tcount> ttable or 2.60> 1.70 so that H1 was accepted. It means that the learning model of problem-based learning instruction assisted by KIT IPA media affects the learning outcomes of students of SMA Negeri 6 Palu.
Pelatihan Pengembangan Perangkat Pembelajaran Inovatif Dengan Menggunakan Prinsip Understanding by Desigen (UBD) pada Guru-Guru di SDN 1 Tatura Sabang, Sri Mulyani; Arwansyah, Arwansyah; Tahril, Tahril
AURELIA: Jurnal Penelitian dan Pengabdian Masyarakat Indonesia Vol 3, No 2 (2024): July 2024
Publisher : CV. Rayyan Dwi Bharata

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57235/aurelia.v3i2.3984

Abstract

Survei di lapangan terkait kompetensi pedagogik guru-guru disekolah mitra masih rendah, hal tersebut terlihat dari kemampuan guru pamong dalam membimbing mahasiswa PLP dan PPL dalam pengembangan perangkat pembelajaran sebagai bentuk persiapan untuk melaksanakan pembelajaran di kelas. Kompetensi yang harus dimiliki oleh guru dalam melaksanakan tugas keprofesionalannya adalah kompetensi yang utuh dan integrative, yang mencakup aspek pengetahuan, keterampilan, dan perilaku. Hal tersebut tertuang dalam pasal 10 Undang-undang guru dan dosen tahun 2005 yang menyebutkan bahwa kompetensi guru meliputi kompetensi pedagogik, kompetensi kepribadian, kompetensi sosial, dan kompetensi profesional. Salah satu kompetensi tersebut adalah kompetensi pedagogik yang berkenaan dengan penguasaan teoritis dan proses aplikasinya dalam pembelajaran yang relevan dengan tuntutan perkembangan abad 21. Berangkat dari akar permasalah tersebut maka kami selaku mitra LPTK merasa terpanggil untuk melaksanakan pengabdian kepada masyarakat dalam bentuk “pelatihan pengembangan perangkat pembelajaran inovatif dengan menggunakan prinsip understanding by desigen kepada guru-guru yang ada di SDN 1 Tatura”, sebagai upaya untuk memberikan pemahaman konsep pembelajaran inovatif, dan meningkatkan kemampuan guru-guru dalam memetakan karakteristik serta tingkat kemampuan peserta didik.
Proximate Analysis on Chayote (Sechium edule (Jacq.) Swartz) Sticks Hijrawati Hijrawati; Jamaludin M Sakung; Tahril Tahril
Jurnal Gizi Kerja dan Produktivitas Vol 5, No 1 (2024): May
Publisher : Fakultas Kedokteran Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jgkp.v5i1.24992

Abstract

Chayote is one type of commodity vegetables in Indonesia. It is known chayote has a high content of nutrients. The nutritional content in chayote can be efficacious as an antioxidant, antipyretic, anti-inflammatory, can reduce cholesterol levels, and hypertension. Processing of chayote into flour is so that it can be stored longer and can be processed into various snacks as desired. Chayote sticks are one of the innovations in food processing from chayote fruit flour. This study aims to determine the proximate levels of chayote sticks. The sample is crushed, then analyzed for protein content using a biuret reagent. Determination of protein levels using UV-Vis spectrophotometer  at a wavelength of 549 nm and using a standard solution of bovine serum albumin as a comparison. Analysis of carbohydrate content using anthrone reagent. Determination of carbohydrate levels using UV-Vis spectrophotometer at a wavelength of 360 nm and using a standard solution of glucose as a comparison. Analysis of fat content using the soxhlation method. Determination of fat content using soxhlet tool with N-hexane as solvent in sample extraction. Analysis of water content using gravimetric method. Determination of water content using an oven tool. Analysis of ash content using gravimetric method. Determination of ash content using a kiln. The results of this study showed proximate levels in chayote sticks were that the average protein content of 10.157%, the average carbohydrate content of 49.873%, the average fat content of 32.688%, the average water content of 0.42%, and the average ash content of of 2.174%.
Efektivitas Penegakan Hukum Terhadap Pelaku Tindak Pidana Korupsi di Kabupaten Bone Tahril, Tahril
Sovereign: International Journal of Law Vol 5 No 3-4 (2023): Juli – Desember
Publisher : CV. Social Politic Genius (SIGn)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37276/sijl.v5i3-4.44

Abstract

This study aims to determine the law enforcement against corruption in Bone Regency, Sulawesi Province, and the factors that influence it. This type of research is empirical legal research with a quantitative descriptive in nature. This research was conducted within the Bone Police, Bone District Attorney, and Bone District Court. The data collection techniques used in this research were questionnaires, documentation, and literature study. The data analysis technique used is quantitative data analysis techniques. The results showed that law enforcement against perpetrators of corruption in Bone Regency is still not effective, this is because there are still several agencies that carry out investigations into criminal acts of corruption, such as police investigations, sometimes unable to prove their investigations. Factors that influence law enforcement against perpetrators of corruption in Bone Regency are factors of legal structure, factors of legal culture and factors of public legal awareness. Law enforcers are expected to submit corruption investigations to the Prosecutor's Office, because these institutions are very professional in handling corruption crimes.
Performance of The Composite Electrode of Reduced Graphene Oxide Palm Oil Shell - Zinc Oxide (rGOCKS - ZnO) as a Chemical Oxygen Demand (COD) Sensor by Photoelectrocatalysis Azis, Thamrin; Muzakkari, Muhammad Z.; Nurdin, Muh.; Maulidiyah, Maulidiyah; Muslia, Wa O.; Bijang, Catherina M.; Tahril, Tahril
Jurnal Akademika Kimia Vol. 12 No. 2 (2023)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2023.v12.i2.pp123-131

Abstract

The preparation of reduced graphene oxide composite electrodes from palm shells (rGOCKS-ZnO) as a chemical oxygen demand (COD) sensor by photoelectrocatalysis has been successfully carried out. The preparation of rGOPS - ZnO electrodes by thermal reduction method and modified Hummer. The XRD results showed several peaks of rGOCKS - ZnO namely 23.287 º, 26.781 °, 29.889 °, 32.468 °, 35.109 °, 37.14 °, 39.822 °, 43.559 °, 47.927 °, and 48.537 °. SEM-EDX analysis reveals the surface of graphene sheets containing aggregates in the shape of small particles attached to graphene sheets. The results of the EDX analysis consisted of C 67.82 %, O. 19.2 %, Zn. 7.85 % and 5.13 % impurity. The CV and LSV tests showed that the rGOAK - ZnO electrode with a variation of 1 gram: 0.3 gram had a good response to the oxidation process under visible light. The profile tests of these organic dyes (methylene blue) in concentrations of 0.5 ppm, 1.0 ppm, 2.0 ppm, and 3.0 ppm were applied by Multi Pulse Amperometry (MPA). The performance of the rGOPS - ZnO electrode has been in determining the value of COD by photo electrocatalytic good sensitivity, linearity, limit of detection, repeatability, and service life. The COD value was determined using the rGOPS - ZnO electrode and obtained 2.97897 mg/LO2 close to the theoretical value.
Synthesis of Silver Nanoparticles using Gandaria Seeds Bioreductor Bijang, Catherina M.; Hasanela, Nurani; Joris, Shielda N.; Fransina, Eirene G.; Tahril, Tahril; Azis, Thamrin; Tehuayo, Ahmadin
Jurnal Akademika Kimia Vol. 12 No. 2 (2023)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2023.v12.i2.pp142-148

Abstract

The silver nanoparticles (NPP) are synthesized with the chemical reduction method by using a water extract bioreductor of gandaria seed (Bouea macrophylla G.) which acts as a reducing precursor, in this case, AgNO3 Ag+ is reduced to AgO. The concentration of AgNO3 is made between 0.5 mm and 1 mm. The characteristic of NPP is unstable, so a modification is needed with and without the addition of PVA 1 %. The process of NPP shaping is monitored by observing the uptaken of UV - Vis when the color changes occur. The high NPP concentration of AgNO3 has higher absorbance and is wider if compared to the lower AgNO3 concentration. The result of this research based on the absorbance value and the wavelength showed the NPP synthesized without the addition of PVA 1 % (b/v) is wider. The addition of PVA 1 % (b/v) provides better stability and maintains the absorbance of spectrum changes from day to day. The maximum uptaken of UV-Vis from NPP AgNO3 0.5 mm by using green synthesis and 1 mm without adding PVA are 0.946 and 0.980, respectively. However, NPP with the addition of PVA has 0.968 and 0.978 absorbance. The best concentration of NPP produced was 1 mm AgNO3.
Co-Authors Afadil Agustin Tiwow Alfian Noor Alfian Noor Arwansyah Arwansyah Arwansyah Awanda Awanda Bijang, Catherina M. Budi Rahayu, Budi Catherina Bijang Daini, Dinda Ulan Daud Karel Walanda Dewi Sri Elsa RN Taminggu Fransina, Eirene G. Hasanela, Nurani Hijrawati Hijrawati Ika ika Imran Imran Jamaludin M Sakung Joris, Shielda N. Kasmiati Kasmiati La O. Ahmad Laode A. Kadir Matheis F. J. D. P. Tanasale Maulidiyah Maulidiyah Meilan Kristina Pogoa Mery Napitupulu Minarni Rama Jura Moh. Raisul Muh Natsir Muh. Nurdin, Muh. Muhammad Agus Muljanto Muslia, Wa O. Muzakkari, Muhammad Z. Nasriadi Dali Nohong Nohong Nur H. Wahyuni Nurmiati Nurmiati Nursiah La Nafie Nursiah La Nafie Paulina Taba Paulina Taba Reynaldi Tandi Siti Nuryanti Sitti Aminah Sitti Rahmawati Somang, Olivia Inrawati I. Sri Hastuti Sri Mulyani Sri Mulyani Sabang Suherman Suherman Tehuayo, Ahmadin THAMRIN AZIS Ulfa H. Syam Ulfiana Ulfiana Winarsyih Muhidin Wiwik Handayani Yulvani Toiba