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Siti Nuryanti
Department Of Chemistry, Faculty Of Teacher Training And Education, Tadulako University, Jln. Soekarno-Hatta Km 8, Palu
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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HUBUNGAN KONSEP DIRI DENGAN PERILAKU BULLYING PADA SISWA SEKOLAH MENENGAH PERTAMA Lilik Suparwati; Rasmun Rasmun; Siti Nuryanti; Edi Sukamto
Husada Mahakam Vol 13 No 1 (2023): Mei 2023
Publisher : Poltekkes Kemenkes Kalimantan Timur (URL: http://poltekkes-kaltim.ac.id/)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35963/hmjk.v13i1.387

Abstract

Bullying adalah bentuk kenakalan remaja yang ditimbulkan dari gangguan perkembangan psikososial yaitu perilaku remaja yang gemar melanggar aturan, mengucilkan kelompok, menghina, dan mengejek. ntuk mengetahui karakteristik respoden, konsep diri, dan perilaku bullying serta hubungan konsep diri dengan perilaku bullying. Jenis penelitian kuantitatif dengan metode cross sectional. Sampel proportional stratified random sampling sebanyak 97 responden. Hasil penelitian menunjukkan remaja dengan konsep diri negatif 52,6%, perilaku bullying tinggi sebanyak 47,4%. p = 2,603×10-11 <0,05 artinya terdapat hubungan bermakna konsep diri dengan perilaku bullying pada siswa kelas VII di SMP Negeri 32 Samarinda dengan r = -0,613 yang berarti hubungan kuat dan arah hubungan negatif. Sehingga dapat disimpu erdapat hubungan konsep diri dengan perilaku bullying pada siswa kelas VII di SMP Negeri 32 Samarinda.
TRAINING ON DIFFERENTIATED LEARNING STRATEGIES WITH MERRDEKA FLOW FOR CHEMISTRY TEACHERS IN PALU CITY Afadil Afadil; Sitti Rahmawati; Siti Nuryanti; Anang Wahid M. Diah; Yuli Nurmayanti
Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Vol. 7 No. 4 (2023): DESEMBER
Publisher : LPPM Univ. Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/abdidos.v7i4.2050

Abstract

The development of the implementation of the independent curriculum today requires learning with a new paradigm to be realized through differentiated learning strategies so that each student learns according to their needs, culture, and stage of development. MGMP Chemistry in Palu City realizes the importance of making various efforts so that the chemistry learning process runs both in terms of delivering learning materials and implementing practicum in the laboratory is a tangible manifestation of differentiated learning. The current problems are (1) teachers are still confused about interpreting differentiated learning strategies as part of a new paradigm of learning through student-centered learning practices, (2) teachers have not been able to apply the unity of the learning cycle starting from competency mapping, process planning, and implementation of learning assessments, (3) the ability of teachers to formulate learning designs and assessments according to the characteristics of participants' needs Education is still lacking, and (4) teachers still experience obstacles in the realization of the Pancasila Student Profile through learning. The training participants were 30 people who were teachers of chemistry subjects who were members of the Chemistry MGMP group of SMA Kota Palu. This Community Service activity aims to provide an understanding of the principles and application of differentiated learning which includes differentiation of content, processes, and products in chemistry subject matter at the high school level or the same level as the MERRDEKA flow. Activities that have been carried out in the form of workshops, training, and mentoring are carried out with a participatory model. The resulting output targets are scientific publications, differentiated learning guidebooks, and IPR.
Analysis of Primary Metabolite Compound Content in Tempe Durian Seeds (Durio zibethinus) Siti Nuryanti; Sitti Rahmawati; Safna Nurfadila; Anang Wahid M. Diah; Sri Mulyani Sabang; Dewi Satria Ahmar
Jurnal Penelitian Pendidikan IPA Vol 10 No 5 (2024): May
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i5.7282

Abstract

Durian seed tempe is tempe made from durian seed waste through a fermentation process by the same microorganisms used to make soybean tempe, namely Rhizopus sp. This research aims to determine the content of primary metabolite compounds in durian seed tempe. The process of determining the fat content in durian seed tempe uses the soxhletation method with n-hexane solvent. The protein content is determined using the Kjedhal method, which uses 3 processes, namely digestion, distillation, and titration. Meanwhile, carbohydrate levels are determined using the anthrone method. Based on the results obtained in this research, namely: the results of the analysis of the fat content contained in durian seed tempe were 0.006 grams. The protein content in durian seed tempe is 0.216, and the carbohydrate content in durian seed tempe is 2.421 grams
Hubungan Gaya Belajar Dengan Keterampilan Berpikir Kritis Dan Kemampuan Kognitif Siswa Pada Mata Pelajaran Kimia di Kelas X SMKN 1 Bungku Tengah Nurbaeti Nurbaeti; Siti Nuryanti; Indarini Dwi Pursitasari
Mitra Sains Vol 3 No 2 (2015): April
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v3i2.124

Abstract

This research aimed to describe correlation between: (1) learning style and critical thinking skill; (2) learning style and cognitive ability in chemistry subject; and (3) critical thinking skill and cognitive ability of students in chemistry subject at Class X of SMKN I Bungku Tengah. The population of the research was 48 students at Class X of SMKN I Bungku Tengah registered in 2013/2014 academic year. The sample of the research was the overall of the population member (saturated sample). The collecting data used questionnaire and multiple choice test. Data of the research were analyzed by using correlation and regression analyses. Based on the data analyses, it could be concluded that there were positive correlations between: (1) the learning style and the critical thinking skill; (2) the learning style and the cognitive ability; and (3) the critical thinking skill and the cognitive ability in chemistry subject of the students at Class X of SMKN IBungku Tengah.
Organoleptic Characteristics of Tempeh from Durian Seed (Durio zibethinus Murr) as Alternative Raw Material Siti Nuryanti; Sitti Rahmawati; Magfirah Magfirah; Sriyulaningsi Sriyulaningsi
Jurnal Penelitian Pendidikan IPA Vol 10 No 8 (2024): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i8.7925

Abstract

Durian seeds have a high starch content, making it possible to be used as a raw material for making tempeh as an alternative to soybeans This research aims to make tempeh using durian seeds as raw material and determine the taste of durian seed tempeh using organoleptic tests. The method used to make tempeh from durian seeds is by fermentation, the durian seed samples are washed, cleaned, then boiled and the hard skin removed, then sliced and steamed until soft. The final stage of the two-day fermentation process continues with packaging. To determine suitability for consumption, an organoleptic/taste test (color, taste, texture and aroma) is carried out. The panelists who determined the taste consisted of several people from the Chemistry Study Program, FKIP UNTAD. The results of the study showed that durian seed tempeh was less white compared to soybean tempeh. The panelists' organoleptic tests for color liking levels stated that they liked 50% and disliked 50%, for taste 60% liked, liked 10% and disliked 30%, and texture panelists stated that they liked 60% and disliked 40% and 70% liked the aroma and 30% disliked it. The conclusion obtained in this research is that durian seeds can be used as an alternative for making tempeh and can reduce durian seed waste
Antioxidant Activity Test of Red Spinach’s Extract (Blitum rubrum) in Ethanol Solvent and Water Solvent with DPPH Nur A. O. Buhang; Siti Nuryanti; Daud K. Walanda
Jurnal Akademika Kimia Vol. 8 No. 3 (2019)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2019.v8.i3.pp153-159

Abstract

The study of red spinach antioxidants (Blitum rubrum) in two types of solvents i.e ethanol and water has been performed. The purpose of this study was to determine the antioxidant activity of red spinach extract from Tinombo Selatan district, Central Sulawesi. Red spinach was macerated in ethanol and water to obtain variations of extract concentrations of 20, 40, 60, and 80 mg/L. Free radicals used were DPPH reagents while vitamin C was used as a positive control. The measurement of absorbance of red spinach’s extract was conducted by spectrophotometric. The results showed that IC50 extract of red spinach in ethanol and water were 51.404 mg/L and 52.227 mg/L, while the value of IC50 vitamin C in ethanol and water solvent was 43.241 mg/L and 140.507 mg/L. Based on the IC50 red spinach’s extract in ethanol and water have strong antioxidant activity.
Analysis of Vitamin C in Kecombrang (Etlingera elatior) Lis K. Djaledje; Mery Napitupulu; Siti Nuryanti
Jurnal Akademika Kimia Vol. 8 No. 4 (2019)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2019.v8.i4.pp214-217

Abstract

Flower kecombrang contains nutrient that are beneficial to the community's nutritional improvement one of vitamin C is needed by the body and as a source of antioxidants. This study aims to determine the levels of vitamin C in flower buds and blooms. Analysis of vitamin C levels in the sample was performed by titration of the iodimetric method. The results of analysis, obtained levels of vitamin C in buds kecombrang flowers were 26.40 mg/100 g and the bloom was 44.26 mg/100 g. The data above showed that vitamin C levels in flower kecombrang increased based on the level of maturity.
Antioxidant Activity Test of Ethanol and Water Extracts of Celery (Apium graveolens L.) Nurmiati Nurmiati; Siti Nuryanti; Tahril Tahril
Jurnal Akademika Kimia Vol. 9 No. 2 (2020)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2020.v9.i2.pp93-101

Abstract

This study aimed to determine the antioxidant activity of ethanol and water extracts of celery (Apium graveolens L.). Antioxidant activity test in this study used DPPH (2,2-diphenyl-1-picrylhydrazine) as a source of free radicals and vitamin C as a positive control. The antioxidant activity of celery extracts was analyzed using a UV-VIS spectrophotometer. Celery powder was extracted by firstly the maceration method using different solvents (ethanol and water) and secondly with the decoction method using water solvents. Celery extract was tested for antioxidant activity with various concentrations of 20, 40, 60, and 80 ppm. The results obtained that water extract (maceration) had a very strong antioxidant power with 23.713 ppm of IC50 values, for ethanol extract (maceration) had a strong antioxidant power with 59.492 ppm of IC50 value, water extract (dekok) had also a very strong antioxidant with 77.446 ppm of IC50 value, and vitamin C had a very strong antioxidant power with 15.631 ppm of an IC50 value. Based on the IC50 value obtained, the water extract by the maceration method was very good to be used as a source of natural antioxidants, because it had a very strong antioxidant activity value which was equivalent to vitamin C.
Emulsion Stability Tes and Effect of HNO3 Concentration in the Internal Phase on Cadmium Ion Extraction using Liquid Membrane Emulsion Technique Sahida Sahida; Baharuddin Hamzah; Siti Nuryanti
Jurnal Akademika Kimia Vol. 9 No. 1 (2020)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2020.v9.i1.pp34-39

Abstract

Study on the emulsion stability and cadmium ion extraction tests was performed using the liquid membrane emulsion technique. This study aimed to determine the emulsion stability between the membrane phase and the internal phase with the variation of the ratio (2:1, 1:1, 2:3, and 1:2), and to determine the maximum conditions of cadmium ion extraction in a solution including the various concentration of HNO3 solution 1, 1.5, 2, and 2.5 M. This study is a laboratory experimental method using benzoyl acetone compound as cation carrier, kerosene as membrane phase, HNO3 solution as the internal phase, span-20 and span-80 as surfactants, and cadmium solution as the sample solution. Cadmium ion concentration in the external phase was determined by UV-VIS spectrophotometer. The result showed that the emulsion stability test which produced the most stable emulsion was in the ratio of the membrane phase and the internal phase 1:1. In addition, the concentration of the HN03 solution resulted in a maximum extraction percentage of 1.5 M with an extraction percentage was 95.28%.
Analysis of Calsium (Ca) and Potassium (K) Levels in Candlenut Shells (Aleurites moluccana Willd) Megawati T. H. Romu; Siti Nuryanti; Siti Aminah
Jurnal Akademika Kimia Vol. 9 No. 1 (2020)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2020.v9.i1.pp58-62

Abstract

Candlenut shell (Aleurites moluccana Willd) is a waste produced from processing candlenut plants with a fairly hard texture. The use of candlenut shells as fertilizer, especially in Central Sulawesi, has not been done so much. The aim of this study was to determine the levels of calcium (Ca) and potassium (K) in candlenut shells. Calcium and potassium levels were determined using an atomic absorption spectrophotometer (AAS). The results show that the average calcium level in the candlenut shell is 0.315 ± 0.09%, while the average potassium level is 0.090 ± 0.01%. The results of Ca and K in candlenut shell are expected to be used as raw material for fertilizer production.
Co-Authors A. Ma’ruf Afadil Agustin Tiwow Al Gifary, Muhammad Ali Amran Amran Rede Anang Wahid M.Diah Arun Haryanto Asmaul Husna B, Supriadi Baharuddin Hamzah Baharuddin Hamzah Barau, Fitri Chairil Anwar Chintia N. Barani Cynthia L. Radiman Daud Karel Walanda Dewi Satria Ahmar Dhamayanti, Noviasri Diniyanti, Diniyanti Edi Sukamto Ergina, Ergina Frantauansyah, Frantauansyah Hartarti Uminah I Made Tangkas Ijirana Indarini Dwi Pursitasari Indarini Dwi Puspitasari Irwan Irwan Jamaludin M Sakung Jeane Maria Mustika Tonahi Jusman Lapatta Karmila Karmila Kasmudin Mustapa Laksono Trisnantoro Lamalat, Tri Sulistiyawati Latupeirisa, Veronica Purnama Sari Lilik Suparwati Lis K. Djaledje Ma’ruf, Ahmad Magfirah Magfirah Male, Kasmir Sy. Marungkil Pasaribu Megawati T. H. Romu Mery Napitupulu Minarni R.J Minarni Rama Jura Mitha Widya Ningrum Moh. Azhar Afandy Muhamad A. Martoprawiro Muhammad Agus Muljanto Muhammad Silmi Hi Abubakar Nesia Andriana Nirwan Syafrin Nur A. O. Buhang Nur, Kurniati Nurbaeti Nurbaeti Nurdin Rahman Nurhasan, Abdul Kodir Nurmiati Nurmiati Nursucianti, Nursucianti Paulus H. Abram Pratiwi, Tia Putri Radiansah, Roy Rahmasita Rahmasita Rahmawati, Rahmawati Rasmun, Rasmun Ratman Ratman Ratman Ratman Robiansyah, Yal Sabirin Matsjeh Safna Nurfadila Sahida Sahida Saldi, Heri Salsabila, Unik Hanifah Setianingsih, Rahmadiana Siti Aminah Siti Nurbaya Sitti Rahmawati Sri Mulyani Sabang SRI RAHAYU Sri Wahyuni Sriyulaningsi Sriyulaningsi Sriyundiyati, Ni Putu Sudarmo, I Gede Suhardi Suhardi Suherman Suherman Suherman Suherman Sulhajir, Wahyuni Supriadi Supriadi Suwiyarsa, I Nyoman Tahril Tri Joko Raharjo U.B., Sitti Nadira Ubaidah, Nurcholis Al Winarti Winarti Yani Restiani Widjaja, Yani Restiani Yuli Nurmayanti Yuma Ardian Allu Yusuf Kendek Yusuf Kendek Yusuf Kendek