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All Journal Jurnal Ilmu dan Teknologi Hasil Hutan Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Jurnal Penelitian Pendidikan IPA (JPPIPA) Al-Kimia Jurnal Pendidikan Teknologi Pertanian MALLOMO: Journal of Community Service Chemistry Education Review Indonesian Journal of Fundamental Sciences Jurnal Inovasi Pengabdian dan Pemberdayaan Masyarakat Seminar Nasional Hasil Penelitian LP2M UNM Chemedu: Jurnal Ilmiah Pendidikan Kimia Pubmedia Jurnal Pendidikan Bahasa Inggris Abdi Kimia : Jurnal Pengabdian Masyarakat

Mohammad WIJAYA

Unknown Affiliation

Author-ID : 417369

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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PENGARUH PENAMBAHAN BUAH NAGA MERAH (Hylocereus polyrhizus) TERHADAP MUTU PERMEN KARAMEL SUSU Marlina, Marlina; Wijaya, Mohammad; Kadirman, Kadirman
Jurnal Pendidikan Teknologi Pertanian Vol 5, No 1 (2019): Februari
Publisher : Universitas Negeri Makassar

This study aims to determine the effect of adding red dragon fruit to the chemical and hedonic content of caramel milk. This study used a method of adding 20%, 30%, and 40% red dragon fruit pulp for caramel milk candy with a cooking time of 2 hours at 80ËšC. This research is a quantitative study (experiment) using a completely randomized design (CRD) with 4 treatments, each control, 20%, 30%, and 40% with 3 replications. The research data was obtained from the results of chemical testing (moisture content, ash content, fiber, reduction sugar, and antioxidants) and organoleptic (color, taste, aroma, and texture), data were analyzed using analysis of variance (ANOVA) and continued with DRMT test (Duncan ) at a 95% confidence level. The results showed that the addition of red dragon fruit pulp had an effect on caramel milk candy, the best research on the manufacture of caramel milk was the addition of 40% red dragon fruit pulp with characteristics of 3.54% moisture content, 1.98% ash content, 1.48% fiber content, decreased sugar content 2.18%, antioxidant content 53.77%, favorite color value 4.10, favorite aroma value 3.52, flavor 3.83, and favorite texture value 3.23

Efektifitas Puntung Rokok Sebagai Insektisida Alami Terhadap Hama Ulat Grayak (Spodoptera litura F.) pada Tanaman Sawi ( Brassica juncea L. ) Effectiviness of Cigarette Function as Natural Insecticide on Armyworm PEST (Spodoptera Litura F.) in Mustard Green (Brassica Juncea L.) Plant Pandi prima, Pandi prima; Patang, Patang; Wijaya, Mohammad
Jurnal Pendidikan Teknologi Pertanian Vol 7, No 2 (2021): Agustus
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jptp.v7i2.12795

AbstrakTujuan penelitian ini untuk mengetahui konsentrasi sari puntung rokok yang tepat untuk mengendalikan hama ulat grayak pada tanaman sawi. Penelitian ini merupakan penelitian eksperimen dengan menggunakan rancangan acak lengkap (RAL). Terdapat 4 perlakuan yaitu konsentrasi 10%, perlakuan konsentrasi 20%, perlakuan konsentrasi 30% perlakuan konsentrasi 40% dan kontrol yang terdiri masing-masing 3 kali ulangan. Variable penelitian yang diamati meliputi tingkah laku dan tingkat mortalitas hama ulat grayak dan menggunakan metode pencelupan (dipping methds). Hasil penelitian menunjukkan bahwa pemberian sari puntung rokok memberikan pengaruh terhadap kondisi makan, reaksi negative, dan reaksi diam terhadap hama ulat grayak pada daun tanaman sawi dan dampak negatif kurang makan dan diam tertinggi terletak pada perlakuan konsentrasi 40%% sari puntung rokok. Hasil penelitian ini juga menunjukkan tidak ada hama ulat grayak yang mati selama penelitian.AbstractThe purpose of this research is to know the concentration of the appropriate cigarette butts to control armyworm pests in the Mustard Green plant. This research is an experimental study using a Completely Randomized Design (RAL). There are 4 treatments of 10% concentration, 20% concentration treatment, 30% concentration treatment and 40% concentration treatments and control consisting 3 times each. Variable studies are observed to include behaviour and mortality rates of armyworm pests and using dipping methods (dipping Methods). The results showed that the delivery of cigarette butts gave effect to the condition of eating, negative reactions, and the silent reaction to armyworm pests on the leaves of the green mustard plant and the negative impact of poor eating and silence lies in the Concentration treatment 40% of cigarette butts. The results of this study also showed no armyworm pests that died during the study.

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Mahoni wood (Swietenia macrophylla King) contains holoseloluse and lignin. This research has been conducted to using lignin from mahoni wood for made polyurethane Isolate lignin is product isolation mahoni degradation with method increasing 4 gram isolate lignin into 150 ml ethylene glycol content 25 gram solution NaOH. The result of degradation used to synthesis polyurethane, then content of LT-PEG with methylen 4.4 difenil diisocyanaate (MDI) become polyurethane. To identified isolate lignin and product degradation lignin has been conducted to characterized with UV and FTIR method. The result shows that the specified spectra at maximum wavelength at 280 nm and 248 nm. While result from FTIR spectra shows that spevtra at wavenumber 1296 cm-1 and 1249 cm-1 is shows of propile guaiasil group. The function group propel siringile. While lignin from kind at siirngile, while the spectra at 1354 cm-1. The result synthesis polyurethane to characterized by the mechanical properties analysis with Tensile tester machine. It is therefore mechanical properties shows that Tensile strength and Young modulus bigger wuth enhancing lignin of content into polyurethane but percentage elongation increase. Keywords : Mahoni wood, isolate lignin, degradation lignin, polyurethane

The purpose of this research is to study the effect of pyrolysis temperature to the wood vinegar chemical composition by be produced wood vinegar, charcoal, biofuel etc. The variation of pyrolysis temperatures were 110, 200, 300, 400 and 500 °C at 5 hours. That pine wood vinegar yield obtained were 13.80%, 16.12%, 11.99%, 15.51% and 0.90 %. Analysis DTA (Diferential Thermal Analysis) showed thermal decompotition occurs at 227, 320.2 and 349.7 °C. Identification of GC-MS of pine sawdust c Mohammad WIJAYA; Erliza NOOR; Tun Tedja IRAWADI; Gustan PARI
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 1 No. 2 (2008): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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The purpose of this research is to study the effect of pyrolysis temperature to the wood vinegar chemical composition by be produced wood vinegar, charcoal, biofuel etc. The variation of pyrolysis temperatures were 110, 200, 300, 400 and 500 °C at 5 hours. That pine wood vinegar yield obtained were 13.80%, 16.12%, 11.99%, 15.51% and 0.90 %. Analysis DTA (Diferential Thermal Analysis) showed thermal decompotition occurs at 227, 320.2 and 349.7 °C. Identification of GC-MS of pine sawdust could provide compounds that mostly derived from acid group and was dominated by acetic acid produced was 31.65%. At distillate of teak smokes was obtained three yield of liquid smokes resulted from conversion of pine wood wastes can be utilized to preserve fishes. Keywords : Pine sawdust, pyrolysis, wood vinegar, and preserve fishes

Sintesis Nanopartikel Mangan Oksida dengan Metode Sol Gel dan Uji Aktivitas Katalitik terhadap Degradasi Zat Warna Rhodamin B Sri Rahayu; Netti Herawati; Mohammad Wijaya
Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Vol 21, No 2 (2020)
Publisher : Jurusan Kimia FMIPA UNM

Telah dilakukan penelitian tentang sintesis nanopartikel mangan oksida menggunakan prekursor KMnO4 dengan metode sol gel, dengan menambahkan aditif etilendiamin dan etilen glikol yang berperan sebagai agen penstabil, selanjutnya menguji aktivitas katalitik dari mangan oksida tersebut terhadap proses degradasi warna rhodamin B. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan zat aditif terhadap ukuran dan bentuk nanopartikel yang dihasilkan serta kemampuannya sebagai katalis dalam proses degradasi zat warna rhodamin B. Nanopartikel yang diperoleh, dikarakterisasi menggunakan XRD (X-Ray Diffraction) dan SEM (Scanning Elektron Microscope) serta penentuan aktivitas katalitik dalam proses degradasi terhadap zat warna rhodamin B dengan spektrofotometer UV-Vis. Hasil penelitian menunjukkan sintesis nanopartikel menggunakan aditif etilendiamin lebih baik dibandingkan dengan aditif etilen glikol karena ukuran nanopartikel berkisar antara 5,66-33,38 dalam bentuk tetragonal. Morfologi nanopartikel mangan oksida terlihat berbentuk bulat yang seragam. Nanopartikel mangan oksida hasil sintesis mampu mempercepat proses degradasi warna rhodamin B dengan persentase degradasi mencapai 85,6%. Kata kunci: Nanopartikel, Mangan Oksida , Sol gel dan Rhodamin B ABSTRACT Research has been carried out on the synthesis of manganese oxide nanoparticles using KMnO4 precursors with the sol gel method, by adding ethylenediamine and ethylene glycol additives which act as stabilizing agents, then tested the catalytic activity of the manganese oxide on the degradation process of Rhodamine B. This study aims to determine the effect of adding substances additives on the size and shape of the nanoparticles were produced and their ability as catalysts in the degradation process of Rhodamin B. Nanoparticles were obtained, characterized using XRD (X-Ray Diffraction)and SEM (Scanning Elektron Microscope)and determination of catalytic activity in the degradation process of rhodamine B dyes with UV-Vis spectrophotometer. The results showed that the synthesis of nanoparticles using ethylenediamine additives was better than ethylene glycol additives because the size of the nanoparticles ranged from 5.66 to 33.38 in the tetragonal form. The morphology of manganese oxide nanoparticles looks uniform in shape. Manganese oxide nanoparticles can accelerate the degradation process of Rhodamin B with a percentage of degradation reaching 85.6%. Keywords: Nanoparticles, Manganese Oxide, Sol gel and Rhodamin B

Pengembangan Perangkat Pembelajaran Kesetimbangan Kimia Berbasis Model Differentiated Science Inquiry untuk Meningkatkan Hasil Belajar Peserta Didik Utami, Sherly Putri; Ramlawati, Ramlawati; Wijaya, mohammad
Chemistry Education Review (CER) Volume 5 Nomor 1 September 2021
Publisher : Program Pasca Sarjana UNM

This study is research and development aimed to develop chemical equilibriums’ learning materials based on differentiated science inquiry which valid, practical, and effective enhancing students’ learning outcomes. The learning materials was developed by 4-D development model belongs to Thiagarajan which consisted of define, design, develop, and dissiminate phases. It has been validated by expert practitioners, tested limited and field, and revised by developer getting valid, practical, and effective product. The research result showed that (1) validity assesment of lesson plan, students’ book and worksheet, learning media, and learning aoutcomes test are in valid category; (2) It’s also in fully implemented category, teacher and students’ responses are in very practical and practical category; (3) amount 30 students of XI MIPA 1 SMAN 8 Gowa have average achievement based on learning outcomes test as much as 86,27 with good category from 100 as ideal score, (4) It’s in effective category based on learning outcomes test which the complete percentage is about 83,33%, (5) The enhace of learning outcomes is in high category with N-Gain of 0,736 respectively.

Pengaruh Persepsi pada Guru dan Motivasi Berprestasi dalam Pembelajaran Daring terhadap Hasil Belajar Peserta Didik Haeruddin, Haeruddin; Anwar, Muhammad; Wijaya, mohammad
Chemistry Education Review (CER) Volume 5 Nomor 1 September 2021
Publisher : Program Pasca Sarjana UNM

The study aims to discover whether there is an influence of the perceptions on teachers and achievement motivation in online learning on learning outcomes in grade X MIA at SMAN 3 Takalar in academic year 2020/2021 on Chemical Bonding subject. This type of research is correlational by using the design of the influence of independent variable on dependent variable. The study population was students of grade X MIA at SMAN 3 Takalar for academic year 2020/2021 which consisted of 6 classes with 216 students. The research sample was taken by employing random sampling, which obtained one class with 36 students. Hypothesis testing was conducted by employing simple regression analysis and multiple regression analysis. The results of the study indicate that: (1) there is an influence of the perception on teachers in online learning on learning outcomes ingrade X MIA at SMAN 3 Takalar on Chemical Bonding subject with a determination index (R) of 0.269, (2) there is an influence of achievement motivation in online learning on learning outcomes ingrade X MIA at SMAN 3 Takalar on Chemical Bonding subject with a determination index (R) of 0.410, and (3) there is an influence of perception on teachers and achievement motivation collectively in online learning on learning outcomes ingrade X MIA at SMAN 3 Takalar on Chemical Bonding subject with adetermination index (R) of 0.499.

Analisis Miskonsepsi Peserta Didik pada Materi Asam Basa Menggunakan Instrumen Three-Tier Diagnostic Test Ekawisudawati, Ekawisudawati; Wijaya, Mohammad; Danial, Muhammad
Chemistry Education Review (CER) Volume 5 Nomor 1 September 2021
Publisher : Program Pasca Sarjana UNM

The study aims to analyze students' misconceptions using a three-tier diagnostic test on acid-base material. The type of research used in this study is descriptive research. This research was conducted at SMAN 1 Mamuju to grade XI MIPA students. Data collection techniques employed diagnostic test in the form of multiple-choice stratified. The first level contained the students' answers, the second level was the reason for the answers, and the last level was the level of confidence. Data analysis was conducted by looking for the percentage of misconceptions from each concept in Acid-Base materials, namely the concept of acid-base theory, pH indicators of acid-base solutions, strength of acids and bases, and calculation of pH of acid and base solutions. The results show that the category of students' misconceptions on acid-base materials using the three-tier diagnostic test instrument is the M1 category. In this category, students answered incorrectly at the first and second levels but were sure that the answers at both levels were correct. The percentage obtained in the M1 category is 33.87% with moderate category. Students' misconceptions occur in the concept of acid-base theory according to Bronsted Lowry with a percentage of 70.33% in item 4 and 73.08% in item 18. The concept of pH indicator of acid-base solutions with a percentage of 73.08% in item number 9 while for the concept of the strength of acids and bases with a percentage of 76.36% in item 9. For the concept of calculating the pH of an acid-base solutions, 3 items are obtained that fall into the category of high misconceptions, namely item 14 with a percentage of 83.52%; item 16 with a percentage of 82.42%; and 20 items with a percentage of 78.02%. The causes of misconceptions in students are due to the incomplete reasoning, students' abilities, students' interest in learning, and teacher’s teaching methods.

Pengembangan Media RatuChemWeb dalam Model Pembelajaran Flipped Classroom untuk Meningkatkan Motivasi dan Hasil Belajar Peserta Didik Rahman, Andi Sriatu Nurdiyanti; Anwar, Muhammad; Wijaya, mohammad
Chemistry Education Review (CER) Volume 5 Nomor 1 September 2021
Publisher : Program Pasca Sarjana UNM

This research is a development research that aims to develop RatuChemWeb in the Flipped Classroom learning model to increase students' motivation and learning outcomes on Acid and Base subject which is valid, practical, and effective to be used. The development model used in this study referred to Addie development model, which consisted of several stages, namely analysis, design, development, implementation, and evaluation. RatuChemWeb media that had been developed was conducted the validation stage by the validators/experts and had gone through trials and had been revised by developers to produce learning media which were valid, practical, and effective. The results show that the development of RatuChemWeb media have: (1) the media expert’s validation by 3.96 which is very valid criteria; (2) the material expert’s validation by 3.68 which is very valid criteria. The RatuChemWeb media is stated as practical due to the practicality test related to (1) its implementation in the Flipped Classroom learning model gains an average value of M = 1.98 with the category of being fully implemented, (2) the teacher's response is very positive with a percentage of 98.92% with very practical criteria, and (3) the students' responses are very positive with a percentage of 84.02% with very practical criteria. The media also meets the effective criteria with the results: (1) based on the Wilcoxon test, it obtains the significance value of p-value smaller than (0.000 < 0.05), which means there is a difference in the average students’ learning motivation before and after learning by using the RatuChemWeb media in the Flipped Classroom learning model with the increase of students' learning motivation from 60.83% to 74.72% and (2) the class completeness is 82% and the average value of N-Gain is 77% which is in high category.

Isolasi Daun Nilam (Pogostemon Cablin Benth) dan Identifikasi Senyawa Patkouli dari Ekstrak Minyak Atsiri Wijaya, Mohammad; Maryono, Maryono; Selvianti, Selvianti
Seminar Nasional LP2M UNM SEMINAR NASIONAL 2023 : PROSIDING EDISI 3
Publisher : Seminar Nasional LP2M UNM

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Abstrak. Penelitian ini bertujuan untuk mengetahui banyaknya kandungan senyawa patkouli alkohol yang terdapat dalam minyak atsiri daun nilam dan karakteristik senyawa patkouli alkohol yang terdapat dalam minyak atsiri daun nilam. Sampel penelitian diambil dari Desa Paruttellang, Kecamatan Ngapa, Kabupaten Kolaka Utara, Provinsi Sulawesi Tenggara. Tahap penelitian ini terdiri dari preparasi sampel, destilasi air, fraksinasi, analisis GC-MS, pemurnian dan identifikasi. Hasil penelitian berupa minyak atsiri daun nilam sebanyak 57 mL yang berwarna kuning muda dan memiliki wangi yang khas. Analisis menggunakan GC-MS terhadap fraksi B, fraksi C, fraksi D dan fraksi E menghasilkan kandungan senyawa patkouli alkohol berturut-turut sebanyak 22,71%; 30,13%; 33,09% dan 22,65%. Isolat D berbentuk kristal putih yang memiliki titik leleh 56 , termasuk dalam senyawa golongan terpenoid, memiliki rumus molekul C15H26O dengan massa molekul 222 gram/mol, identifikasi FTIR menunjukkan adanya gugus O-H, C-H (SP3), C-C metilen (-CH2-CH2), -CH3, dan C-OH alkohol tersier yang merupakan karakteristik dari senyawa patkouli alkohol Kata Kunci: Daun Nilam (Pogostemon Cablin Benth.), Minyak Atsiri dan Patkouli Alkohol

Co-Authors Alam, Muhammad Nur Alhim, Rusdi Amal Amriani, Herviana Amrullah, Muhammad Syahrun Andi Sukainah Dewiyanti Fadly Diana Eka Pratiwi Ekawisudawati, Ekawisudawati Erliza Noor Fadilah, Ratnawaty Gusma Harfiana Abbas Gustan Pari Gustan Pari Haeruddin Haeruddin Hamid, Serna Hardin Hery Widijanto Husain Syam I Made Arcana Istigfar, Andi Muhammad Jamaluddin Jamaluddin Jamaluddin P, Jamaluddin P Kadirman, Kadirman M Noer, Sri Wahyuni Maryono Maryono Masita, Sri Muddin, Saripuddin Muhammad Anwar Muhammad Danial Muhammad Nur Alam Muhammad Wiharto Muhammad Wiharto Netti Herawati Netti Herawati Noviana, Kiki Nurmila, Nurmila Nurul Fahmi Pandi prima, Pandi prima Patang Patang, Patang Pince Salempa Prastika, Ike Pusaka, Semerdanta Rahman, Andi Sriatu Nurdiyanti Rahmawati, Rahmawati Ramlah Ramlah Ramlawati Ramlawati Ramlawati, Ramlawati Risnawati Risnawati Salmanuddin, Salmanuddin Selvianti Selvianti Sitti Faika Sri Rahayu Sudding Suriati Eka Putri Tun Tedja Irawadi Utami, Sherly Putri Vika Puji Cahyani Wahyudi, Mohammad Wahyudi, Rezky Wijaya, Khalida

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