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All Journal Biomedika Pharmacon Journal of Educational Research and Evaluation Indo-MathEdu Intellectuals Journal Prosiding University Research Colloquium KOLONI
Ratna Yuliani
Universitas Muhammadiyah Surakarta
Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Public Health Social Sciences Other

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The Positive Influence of Satisfaction and Workload on Teachers Performance Yuliani, Ratna; Harun, Cut Zahri; Yusrizal, Yusrizal
Journal of Education Reseach and Evaluation Vol 6, No 1 (2022): February
Publisher : LPPM Undiksha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jere.v6i1.37850

Abstract

In today's age of globalization, education is very important. The educational provisions that society has developed well enough is undeniable, and the community will be increasingly qualified and able to compete competitively, as well as an era of increasingly fierce and tougher competition in various corners of life's activities. This study aims to analyze the impact of satisfaction and workload on improving teachers’ performance. This study uses quantitative research methods and data collection techniques used as interviews and questionnaires. The audience in this study were all teachers in total 73 teachers. The analytical method was used to multiple linear regression. The simultaneous test results also show that the variables of job satisfaction and workload have a significant effect on the performance of teachers at SMKN 1 Banda Aceh by obtaining an F-count of 92.615. While F-table at the significant level α = 5% is 3.033. It shows, based on the statistical test F-count shows the F-count > F-table, with a probability level of 0.000. So, it can be concluded that satisfaction and workload have a positive influence on teacher performance.
Skrining Aktivitas Antibakteri Ekstrak Etanol 70% Sepuluh Daun Tanaman Terhadap Klebsiella Pneumoniae Nurul Qolbi; Ratna Yuliani
Pharmacon: Jurnal Farmasi Indonesia Vol 15, No 1 (2018)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/pharmacon.v15i1.6169

Abstract

Klebsiella pneumoniae causes several diseases such as chronic obstructive lung disease and community pneumonia. The antibiotics used for treating the infectious diseases cause several side effects. Therefore, alternative medicines which have minimal side effects are needed. This research aimed to investigate antibacterial activity of ten ethanolic extract of leaves against K. pneumoniae, identify compounds and active compounds in extract which has the highest antibacterial activity. Compounds in leaves were extracted using 70% ethanol with maceration method. The disk diffusion method was used for screening antibacterial activity against K. pneumoniae. The identification of group of compounds in extract with the largest inhibitory zone diameter was done using Thin Layer Chromatography (TLC) and bioautographic test was performed to determine the active compounds. The results of antibacterial activity screening tests showed that all extracts have antibacterial activity except bamboo leaf extract. Breadfruit extract (Artocarpus altilis) has the highest antibacterial activity with diameter of inhibition zone of 18,33 ± 5,57 mm. Breadfruit extract contains tannin, polyphenol, alkaloid, terpenoid, saponin, and the active antibacterial compounds were terpenoid and saponin.
AKTIVITAS ANTIBAKTERI MINYAK ATSIRI DAUN JERUK PURUT (Citrus hystrix) TERHADAP Staphylococcus aureus DAN Escherichia coli Ratna Yuliani
Pharmacon: Jurnal Farmasi Indonesia Vol 12, No 2 (2011)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/pharmacon.v12i2.31

Abstract

Jeruk purut (Citrus hystrix) merupakan tanaman dari suku Rutaceae yang telah lama dikenal masyarakat sebagai bahan cita rasa. Hasil penelitian sebelumnya melaporkan bahwa minyak atsiri jeruk nipis (Citrus aurantifolia) memiliki aktivitas antibakteri terhadap Staphylococcus aureus dan Escherichia coli. Penelitian ini bertujuan untuk mengukur aktivitas antibakteri minyak atsiri daun jeruk purut terhadap  Staphylococcus aureus dan Escherichia coli dan mendeteksi kandungan minyak atsiri yang mempunyai aktivitas antibakteri. Minyak atsiri daun jeruk purut yang diperoleh dengan cara destilasi uap dan air diuji aktivitas antibakterinya menggunakan metode dilusi cair. Kromatografi Lapis Tipis (KLT) dilakukan menggunakan silika gel GF254 dan heksan-etil asetat (9:1). Bercak hasil KLT dideteksi dengan UV254nm, UV366nm, anisaldehid-asam sulfat, dan vanilin-asam sulfat. Bioautografi dilakukan dengan metode kontak. Hasil uji aktivitas antibakteri menunjukkan bahwa minyak atsiri daun jeruk purut mempunyai aktivitas antibakteri terhadap Staphylococcus aureus dengan nilai Konsentrasi Hambat Minimum (KHM) dan Konsentrasi Bunuh Minimum (KBM) berturut-turut sebesar 1  dan 2%. Minyak atsiri juga mampu menghambat dan membunuh Escherichia coli dengan nilai KHM dan KBM £ 0,0625%. Hasil KLT menunjukkan bahwa minyak atsiri daun jeruk purut mengandung beberapa senyawa golongan terpen dengan Rf yang berbeda. Berdasarkan hasil bioautografi, salah satu senyawa golongan terpen tersebut mempunyai aktivitas antibakteri terhadap Staphylococcus aureus dan Escherichia coli.             Kata kunci : antibakteri, Citrus hystrix, E. coli, minyak atsiri, S. aureus
Uji Aktivitas Antibakteri Ekstrak Etanol Bawang Dayak (Eleutherine palmifolia (L.) Merr) Terhadap Bakteri Staphylococcus aureus Warsiti Warsiti; Sisca Dwikusuma Wardani; Ardea Achmad Ramadhan; Ratna Yuliani
Pharmacon: Jurnal Farmasi Indonesia Vol 15, No 2 (2018)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/pharmacon.v15i2.6526

Abstract

Staphylococcus aureus is an infectious bacteria with pus because of tissue damage. Infectious diseases caused by S. aureus include wound infections, ulcers, pimples, and impetigo. Dayak onions have the benefit of being antibacterial. This research aims to study the antibacterial activity of ethanolic extract of Dayak onions against  Staphylococcus aureus. The antibacterial study was carried out using the disk diffusion method. Identification of bacteria by Gram staining showed Gram-positive bacteria which can ferment mannitol with the mannitol test. A bacterial sensitivity test was conducted using three antibiotics i.e. cefoxitin 30μg, vancomycin 30μg, and linezolid 30μg. The bacteria was sensitive to all of the three antibiotics, with the inhibitory zone of 23.5 mm; 17 mm and 27.5 mm, respectively. Vancomycin 30μg was used as a positive control, resulted in average diameter of the inhibitory zone of 17.83  2.25 mm, whereas a control solvent DMSO (Dimethyl sulphoxide) did not produce zones. The ethanolic extract of Dayak onion in the concentration of 25%; 50%; 75% and 100% showed the average diameter of inhibitory zones of 8.17  0.29  mm; 10.67  1.44 mm; 10.33  1.53 mm; and 12.33  1.61  mm, respectively
Ethanolic Extract of Papaya Leaves (Carica papaya) and its Fractions have no Potential Cytotoxicity on T47D Cells Ratna Yuliani; Faisal Syahdeni
Pharmacon: Jurnal Farmasi Indonesia Vol 17, No 1 (2020)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/pharmacon.v17i1.10760

Abstract

Breast cancer is one type of cancer that causes high mortality rate in women. Plants produce secondary metabolites with a wide range of activity, one of which is as an anticancer. This research was conducted to investigate the cytotoxic effect of ethanolic extract of papaya leaves (Carica papaya) and its fractions on T47D cell line. Extraction of the natural compounds from papaya leaves was carried out by soaking the leaf powder in 96% ethanol followed by filtration and solvent evaporation. Liquid partition was done to obtain hexane, ethyl acetate, and water fractions. The cytotoxicity of the extract and the fractions was tested using MTT assay. Identification of chemical compounds in the ethyl acetate fraction was conducted using a thin layer chromatography method that used silica gel GF 254 as the stationary phase and acetone and hexane (4:6) as the mobile phase. The MTT assay result shows that the extract does not inhibit the growth of T47D cells. The viability of T47D cells can be reduced by the hexane, ethyl acetate, and water fractions with IC50 values of 2,231.30, 557.33, and 2,112.81 g/mL, respectively. The ethyl acetate fraction contains flavonoids, alkaloids, phenolics, and terpenoids. The ethanolic extract of papaya leaves and the fractions has no potential cytotoxicity on T47D cells due to high IC50 values.
Hasil Skrining Aktivitas Sitotoksik Ekstrak Etanol Daun Kelengkeng (Dimocarpus longan), Daun Kersen (Muntingia calabura), dan Daun Alpukat (Persea americana) terhadap Sel T47D Dan WiDr Ratna Yuliani; Broto Santoso; Bella Permatasani; Diah Mukti Sari
Pharmacon: Jurnal Farmasi Indonesia Vol 16, No 2 (2019)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/pharmacon.v16i2.9050

Abstract

Cancer treatments usually cause adverse drug reactions. Therefore, safe anticancer drugs are needed in the treatment of cancer. One source of medicine that can be explored is plant. Extracts of longan leaves (Dimocarpus longan), jamaican cherry leaves (Muntingia calabura), and avocado leaves (Persea americana) have been tested for cytotoxic activity against several cancer cell lines. This study aims to determine the cytotoxic activity of ethanolic extract of longan leaves, jamaican cherry leaves, and avocado leaves against T47D and WiDr cells and to identify secondary metabolites in the extracts which have the highest activity. Ethanolic extract of longan leaves, jamaican cherry leaves, and avocado leaves were tested for their cytotoxic activity using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) method. Identification of secondary metabolites in the ethanolic extract of avocado leaves was carried out by thin layer chromatography method using silica gel GF254 as the stationary phase and a mixture of n-hexane and acetone (6:4) as the mobile phase. Cytotoxic test results show that ethanolic extract of longan leaves and cherry leaves with concentration of up to 1600 μg/mL do not reduce the T47D and WiDr living cells to 50%. Avocado leaf extract decreases the percentage of living T47D cells and WiDr with IC50 values of  790.679 µg/mL and 1072.2 µg/mL, respectively. The ethanolic extract of avocado leaves contains flavonoid, phenolic, and terpenoid. Ethanolic extract of longan leaves, cherry leaves and avocado leaves do not have cytotoxic activity against T47D and WiDr cells.
Pengaruh Spesifikasi Laptop terhadap Hasil Docking FlexAID pada Produk Alami dan Anti Diabetes Broto Santoso; Ratna Yuliani; Y Yuliansah; Mustaqim Alfarizky; Diva Ratna Shabrina; Dimas Satrio Utomo; Rizkiananda Wardani; Annisa Wifa Rizqi Madjid; Monarita Puspita Dewi; Naufal Farras
Prosiding University Research Colloquium Proceeding of The 16th University Research Colloquium 2022: Bidang MIPA dan Kesehatan
Publisher : Konsorsium Lembaga Penelitian dan Pengabdian kepada Masyarakat Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Laptop menjadi media komputasi yang portabel. FlexAID merupakan aplikasi docking berbasis PyMOL. Beberapa senyawa produk alami diujikan in silico pada target anti diabetes. Naskah ini ditujukan untuk menginformasikan hasil komputasi FlexAID antar laptop yang berbeda spesifikasi. FlexAID dalam aplikasi NRGSuite telah digunakan oleh 8 laptop dalam 3 kelompok protein dan ditambah 1 laptop yang sama dan disertakan di setiap kelompok dengan masing-masing 9 senyawa uji. Protein target, ligan, dan sistem docking adalah sama di setiap kelompok yang berbeda pada protein targetnya. Nilai RMSD native lebih dari 2 ditemukan pada 3 laptop di kelompok 3, namun laptop lainnya telah memenuhi nilai kesejajaran. Rentang nilai RSD (%) CF-score dan rasio secara berturut-turut untuk kelompok 1-3 adalah [3,66-25,25; 2,89-18,93], [2,44-37,35; 2,64- 35,94], dan [1,99-16,81; 4,26-16,97]. Perolehan RSD CF-score native masih di bawah 10% dimana nilai terendah didapati pada kelompok 2 sedangkan untuk 9 ligan setiap kelompok terdapat 2, 5 dan 6 senyawa yang berada di bawah nilai ini. Laptop dengan spesifikasinya mempunyai peranan penting dalam perhitungan docking FlexAID yang dimungkinkan pula dapat terjadi pada aplikasi lainnya yang serupa. Terdapat 2 senyawa potensial pada kelompok 1 dan 3 dengan nilai CF-score lebih baik dibandingkan dengan native.
Pengaruh Penggunaan Strategi Active Knowledge Sharing Terhadap Hasil Belajar Matematika Siswa Kelas VIII SMP N 1 2X11 Kayutanam Yuliani, Ratna; Firmanti, Pipit; Risnawita, Risnawita; Medika, Gema Hista
Indo-MathEdu Intellectuals Journal Vol. 5 No. 6 (2024): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v5i6.2039

Abstract

This research was motivated by the problems found in class VIII SMPN 1 2x11 Kayutanam, namely low student learning outcomes, lack of student knowledge about the material being taught, lack of active involvement of students in the learning process. The aim of this research is to find out that students' mathematics learning outcomes using the Active Knowledge Sharing strategy are better than student learning outcomes using conventional learning. This type of research is pre-experimental research with a research design, namely The Static Group Comparison Design. The population in this study were all students in class VIII of SMP N 1 2X11 Kayutanam. The sample in this research was class VIII.1 students as the experimental class and class VIII.2 students as the control class. The instrument used is an essay test. Based on the results of the final test analysis calculated using the t-test, tcount = 5.04 and ttable = 1.67. Because tcount > ttable. So, reject H0 and accept H1. So, it can be concluded that students' mathematics learning outcomes using the Active Knowledge Sharing strategy are better than student learning outcomes using conventional learning in class VIII SMP N 1 2x11 Kayutanam Academic Year 2022/2023
The Positive Influence of Satisfaction and Workload on Teachers Performance Yuliani, Ratna; Harun, Cut Zahri; Yusrizal, Yusrizal
Journal of Education Reseach and Evaluation Vol 6 No 1 (2022): February
Publisher : LPPM Undiksha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (333.567 KB) | DOI: 10.23887/jere.v6i1.37850

Abstract

In today's age of globalization, education is very important. The educational provisions that society has developed well enough is undeniable, and the community will be increasingly qualified and able to compete competitively, as well as an era of increasingly fierce and tougher competition in various corners of life's activities. This study aims to analyze the impact of satisfaction and workload on improving teachers’ performance. This study uses quantitative research methods and data collection techniques used as interviews and questionnaires. The audiences in this study were all teachers in total 73 teachers. The analytical method was used to multiple linear regressions. The simultaneous test results also show that the variables of job satisfaction and workload have a significant effect on the performance of teachers by obtaining an F-count of 92.615. While F-table at the significant level α = 5% is 3.033. It shows, based on the statistical test F-count shows the F-count > F-table, with a probability level of 0.000. So, it can be concluded that satisfaction and workload have a positive influence on teacher performance.
ANALISIS KESULITAN SISWA DALAM MENYELESAIKAN SOAL OPERASI HITUNG ALJABAR KELAS VII DI SMP N 1 2X11 KAYUTANAM Yuliani, Ratna; Isnaniah, Isnaniah; Nelda, Adiarni
KOLONI Vol. 1 No. 4 (2022): DESEMBER 2022
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/koloni.v1i4.348

Abstract

Algebra is a very important subject in learning mathematics. One of the algebraic sub-materials in mathematics at junior high school is algebraic arithmetic operations. The purpose of this research is to find out the difficulties and factors that cause students' difficulties in completing algebraic operations. This research was conducted at SMP N 1 2x11 Kayutanam in the odd semester of the 2022/2023 academic year. The subjects in this study were 22 students in class VII-2. In this study, researchers used data collection methods by observation, test descriptions of 8 items, interviews, and documentation. Meanwhile, students' difficulty in completing algebraic arithmetic operations is the difficulty of concepts and principles. teaches the concept of students' difficulties when determining which includes variables, coefficients, constants and many terms. completing principles by students, namely experiencing difficulties in using the principles of addition and subtraction with positive or negative numbers, lack of understanding of students in groupings of similar tribes, lack of thoroughness in doing algebraic addition and subtraction, students' difficulties in adding algebraic operations, and students having difficulties in principles equate the pronunciation of algebraic fractions. The data analysis technique used in this study is data reduction, data presentation, and drawing conclusions. Keywords: Analysis, Student Difficulties, Algebraic Operations
Co-Authors Abda Abda Alfarizky, Mustaqim Anita Sukmawati Annisa Wifa Rizqi Madjid Ardea Achmad Ramadhan Bella Permatasani Broto Santoso Cut Zahri Harun Dewi, Monarita Puspita Diah Mukti Sari Dimas Satrio Utomo Diva Ratna Shabrina Dr. Muhtadi , MSi., Dr. Muhtadi Faisal Syahdeni Farras, Naufal Firmanti, Pipit Gema Hista Medika Isnaniah, Isnaniah Madjid, Annisa Wifa Rizqi Monarita Puspita Dewi Mustaqim Alfarizky Naufal Farras Nelda, Adiarni Nur Aini Nursyahbani, Mia Nurul Qolbi Permatasani, Bella Prasetyo, Muhammad Nur Qolbi, Nurul Ramadhan, Ardea Achmad Raudatul Patimah, Raudatul Ria Ambarwati Risnawita Risnawita, Risnawita Rizkiananda Wardani Sari, Diah Mukti Shabrina, Diva Ratna Sisca Dwikusuma Wardani Sternatami Liberitera Syahdeni, Faisal Tanti Azizah Sujono Utomo, Dimas Satrio Wardani, Rizkiananda Wardani, Sisca Dwikusuma Warsiti Warsiti Warsiti Warsiti Y Yuliansah Yuliansah, Y Yusrizal Yusrizal