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All Journal Microbiology Indonesia Indonesian Journal of Biotechnology Jurnal Biodjati Indonesian Journal of Chemistry Pendas : Jurnah Ilmiah Pendidikan Dasar Al Qalam: Jurnal Ilmiah Keagamaan dan Kemasyarakatan PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Al Khidma: Jurnal Pengabdian Masyarakat Biospektrum Jurnal Biologi Indonesian Journal on Medical Science (IJMS) Jurnal Riset sosial humaniora, dan Pendidikan (Soshumdik) Jurnal Ilmiah Sultan Agung Jurnal Akuntansi, Perpajakan dan Auditing Biosaintifika: Journal of Biology & Biology Education JIPDAS (Jurnal Ilmiah Pendidikan Dasar)
RATNA SETYANINGSIH
Program Studi Biologi - Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Sebelas Maret Surakarta
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Health Professions Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Identification of Lactic Acid Bacteria Inhibiting the Growth of Saccharomyces cerevisiae in Molasses Fermentation Vico, Yoel; Budiarso, Tri Yahya; Amarantini, Charis; Setyaningsih, Ratna
Biosaintifika: Journal of Biology & Biology Education Vol. 17 No. 1 (2025): April 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v17i1.14168

Abstract

Ethanol production by Saccharomyces cerevisiae is essential for the biofuel industry, but microbial contamination by Lactic Acid Bacteria (LAB) can significantly reduce yield and fermentation efficiency. This research aimed to identify Lactic Acid Bacteria (LAB) causing significant inhibition of Saccharomyces cerevisiae growth. LAB isolates were screened and identification was carried out by carbohydrate fermentation using the 50 CHL Analytical Profile Index (API) Kit, and the LAB isolates (MC2K1, MP2K1, and MP2K2) were identified as Lactobacillus rhamnosus and isolate MC2K2 as L. pentosus. The results demonstrated that bacteriocins did not significantly inhibit S. cerevisiae following heat treatment, indicating that metabolic byproducts, particularly lactic acid, were primarily responsible for yeast inhibition. Co-culture of LAB and S. cerevisiae supernatants was used to determine inhibition by metabolites produced by LAB. A higher inhibitory effect occurred in the supernatant from 48 hours of incubation with lower CFU results. The highest inhibition rate reached 42% in isolate MC2K1 and the incubation time of 6 hours with all isolates significantly inhibited the growth of S. cerevisiae. These findings challenge the prevailing assumption that bacteriocins are the primary inhibitors of yeast and highlight the importance of metabolic byproducts as dominant inhibitory factors. This insight contributes to developing targeted contamination control strategies, ultimately enhancing ethanol production efficiency.
Pengaruh Student Engagement terhadap Communication Skill Mahasiswa Kismiani Kismiani; Hesti Sadtyadi; Ratna Setyaningsih
Jurnal Riset Sosial Humaniora dan Pendidikan Vol. 4 No. 1 (2025): Maret : Jurnal Riset sosial humaniora, dan Pendidikan (Soshumdik)
Publisher : LPPM Universitas 17 Agustus 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/soshumdik.v4i1.2574

Abstract

Having good communication skills can make someone easily accepted in an organization and will get a positive response in the communication that has been built. The purpose of this study was to see if there is a significant influence between Student Engagement and Student Communication Skills. The research method used is a quantitative research method. Data were collected through a google form using a Likert scale of 1-5 from 62 respondents from the Dharmaduta Department Student Association of the Raden Wijaya State Buddhist College which will later be tested for validity, reliability, and hypothesis influence. The results of the study using a simple linear regression test showed a significant value (Sig.) for student engagement (X) of 0.000 and R Square of 0.409, a significant value <0.05 so that H0 was rejected and Ha was accepted, meaning that student engagement has a significant effect on communication skills. Based on these results, it can be concluded that student engagement has a role in shaping student communication skills by 40.9%.
Pengaruh Komunikasi Interpersonal terhadap Keberhasilan Negosiasi : Survei di Pasar Tradisional Wonogiri Susila Widhiyanti; Hesti Sadtyadi; Ratna Setyaningsih
Jurnal Riset Sosial Humaniora dan Pendidikan Vol. 4 No. 1 (2025): Maret : Jurnal Riset sosial humaniora, dan Pendidikan (Soshumdik)
Publisher : LPPM Universitas 17 Agustus 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/soshumdik.v4i1.2579

Abstract

This study There is ineffective communication in Wonogiri Market which causes failure in negotiation. Ineffectiveness in negotiation also makes sellers and buyers not have a purchase agreement, sometimes there is a compulsion of sellers so that the goods they sell are immediately sold out so that many other traders compete to provide lower prices. This study aims to determine whether or not there is an influence of communication on the success of negotiations between sellers and buyers in Wonogiri Traditional Market. This study is a quantitative study with a simple linear regression analysis method. This research was conducted in Wonogiri traditional market, on sellers and buyers in March - May 2025. The population of this study was 110 sellers, while the sample used was 84 sellers. The data analysis technique used simple linear regression with the help of the SPSS 25 program. Based on the results of the study and data analysis, it shows that there is an influence of interpersonal communication on the success of negotiations in Wonogiri Traditional Market of 0.581.  
DAMPAK KEBERADAAN PASAR MRICAN TERHADAP TINGKAT KINERJA JALAN DI RUAS JALAN TENTARA PELAJAR KOTA SEMARANG Setyaningsih, Ratna; Mudiyono, Rachmat; Ridlo, Mohammad Agung
Jurnal Ilmiah Penelitian Mahasiswa Vol 4, No 3 (2025): SEPTEMBER 2025
Publisher : Jurnal Ilmiah Sultan Agung

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

Abstract

Ruas Jalan Tentara Pelajar memiliki arus lalu lintas yang cukup padat karena terdapat aktivitas perdagangan dan jasa berupa Pasar Mrican. Keberadaan Pasar Mrican ini mengakibatkan munculnya permasalahan kemacetan lalu lintas yang disebabkan oleh hambatan samping serta tarikan. Maka dari itu, penelitian ini dilakukan guna mengetahui besar dampak kebaradaan Pasar Mrican terhadap tingkat kinerja jalan di ruas Jalan Tentara Pelajar Kota Semarang. Penelitian ini menggunakan metode deskriptif kuantitatif. Sampel penelitian berjumlah 100 responden dengan ditentukan oleh metode simple random sampling. Berdasarkan hasil penelitian diketahui bahwa dampak tarikan dan bangkitan yang dihasilkan dari adanya Pasar Mrican terhadap volume di ruas Jalan Tentara Pelajar mengalami kenaikan sebesar 4.44% dengan volume tarikan dan bangkitan sebesar 207.40 smp/jam. Hasil penelitian diketahui bahwa dampak tarikan dan bangkitan yang dihasilkan dari adanya Pasar Mrican terhadap hambatan samping di ruas Jalan Tentara Pelajar mengalami kenaikan hambatan samping 42,16% atau sebesar 387,95 kejadian/jam. Kapasitas jalan menunjukkan bahwa Kapasitas jalan yang dihasilkan dengan adanya dampak dari Pasar Mrican mengalami penurunan sebesar 3.26% atau sebesar 187.68 smp/jam dari kapasitas jalan yang dihasilkan tanpa adanya dampak Pasar Mrican. Tingkat pelayanan jalan menunjukkan bahwa adanya kenaikan tingkat pelayanan jalan pada jam puncak yang dihasilkan akibat dari adanya dampak Pasar Mrican sebesar 6,17%. Hal ini menunjukkan bahwa adanya dampak yang dihasilkan oleh keberadaan Pasar Mrican terhadap tingkat kinerja jalan di ruas Jalan Tentara Pelajar. Semakin tinggi atau banyak aktivitas perdagangan dan jasa di ruas Jalan Tentara Pelajar makan akan menimbulkan kemacetan lalu lintas. Saran dari penelitian ini adalah perlunya penambahan lahan parkir, penertiban pedagang kaki lima, serta pengelolaan pasar yang lebih baik agar permasalahan kemacetan lalu lintas di ruas Jalan Tentara Pelajar dapat diminimalisasi.Kata Kunci: Pasar Mrican, Tingkat Kinerja Jalan, Permasalahan Lalu Lintas, Volume Kendaraan
LEARNING MEDIA TRAINING AND ASSISTANCE FOR BUDDHIST SUNDAY SCHOOL MANAGEMENT IN WONOGIRI REGENCY Novianti, Novianti; Marjianto, Marjianto; Darma, Widia; Setyaningsih, Ratna; Putro, Adi Nugroho Susanto; Wulan, Ayuning
Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Vol. 8 No. 1 (2024): MARET
Publisher : LPPM Univ. Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/abdidos.v8i1.2140

Abstract

As part of implementing the Tri Dharma of Higher Education, the lecturer team in STAB Negeri Raden Wijaya Wonogiri, Central Java conducted community service activities in the form of "Training and Assistance for Buddhist Sunday School Management in Wonogiri Regency" (Efforts of Service Lecturers to Improve the Quality of SMB Management in Wonogiri Regency). The locations used as places to carry out community service activities are SMB Maitri Ratna in Giriwoyo District and SMB Dhamma Sasana in Slogohimo District. Based on observations in the field, it was found that Sunday school management had not been managed well and learning activities used monotonous material because Sunday school teachers had minimal training in both teaching and organizational management. This service activity is carried out by providing training and assistance to Sunday school coaches and teachers through 3 stages, namely observation, implementation, and ending with evaluation. The results of ongoing community service activities provide benefits, namely the preparation of Culla Sekha Sunday school learning plans, SMB teachers being able to use tangram media and interactive media in Sunday school activities, and the formation of the Maitri Ratna SMB management structure.
ANALISIS DAMPAK REWARD TERHADAP MOTIVASI BELAJAR DALAM PEMBELAJARAN BAHASA INGGRIS DI SEKOLAH DASAR Mudita Wandani; Dwi Maryani Rispatiningsih; Ratna Setyaningsih
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 9 No. 04 (2024): Volume 09, No. 04 Desember 2024
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v9i4.17038

Abstract

Learning is a process carried out by teachers with students both individually and in groups. In elementary school there are many subjects, one of which is English. English is one of the local content in elementary schools. Motivation to learn English is very important so teachers must use varied educational methods. English is local content found in Elementary School. To increase students learning motivation, they can use many methods, one of which is giving rewards. Rewards are gifts. Gifts can be in the form of praise, snacks, signs of respect and appreciation. In this study, the rewards used were star point, snacks, and canteen vouchers. This research uses a qualitative method, namely a post-positivism method with natural conditions by placing the researcher as a small tool or instrument. The aim of the research was to ensure that by providing rewards students learning motivation would increase and their level of understanding of English would also increase. The result of the research show that giving rewards has an impact on increasing student learning motivation. Through giving rewards, students have a sense of competition with their classmates, students become active in learning and dare to express their opinions in the English learning process.
Transformation of Waste Banks: Realizing a Community- Based Circular Economy in Kwadungan Gunung Village,Kledung District,Temanggung Regency Manurung, Herlina; Rokhaniyah, Siti; Khotijah, Siti Afidatul; Susilo, Ghina Fitri Ariesta; Khabibah, Nibras Anny; Febriyanti, Siti; Setyaningsih, Ratna
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 10 No. 11 (2025): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v10i11.10618

Abstract

Waste management issues in Kwadungan Gunung Village, Kledung District, Temanggung Regency, present significant challenges to achieving environmental sustainability and community economic resilience. The increasing volume of household and agricultural waste, limited public awareness of circular economy principles, and suboptimal management of the existing waste bank constitute the core problems in this community. This study aims to optimize the role of the waste bank as a center for education, innovation, and community-based economic empowerment. The implemented methods include socialization and education on circular economy practices, training in waste utilization, and assistance for micro, small, and medium enterprises (MSMEs) in transforming waste into economically valuable products. The strategies involve developing a more structured operational system for the waste bank, providing community incentives, and fostering cross-sector collaboration with local stakeholders. The primary outputs of this program include publication of a scientific article in a nationally indexed (SINTA) journal, activity posters illustrating the workflow and program impact, implementation documentation, and copyright registration for the training module and waste bank management system. The outcomes are expected to position Kwadungan Gunung Village as a model of sustainable rural development, effectively implementing circular economy principles through the optimization of a community-based waste bank.
HUBUNGAN ANTARA MOTIVASI BELAJAR DENGAN HASIL BELAJAR MATEMATIKA PADA SISWA KELAS V SD NEGERI 02 PURWOREJO Yona Intan Zariska; Ratna Setyaningsih
JIPDAS (Jurnal Ilmiah Pendidikan Dasar) Vol. 4 No. 1 (2025): JIPDAS : Jurnal Ilmiah Pendidikan Dasar
Publisher : Lembaga Pengembangan Inovasi Pendidikan Baiturrahman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65946/jipdas.v4i1.129

Abstract

This study aims to examine the relationship between learning motivation and mathematics learning achievement of fifth-grade elementary school students. Learning motivation is a critical factor influencing student success, particularly in subjects that require concentration and continuous practice, such as mathematics. This research employed a quantitative correlational design with a sample of 9 fifth-grade students. Data were collected using a learning motivation questionnaire and mathematics learning scores, then analyzed using descriptive statistics and Spearman Rho correlation test with SPSS. The results indicated that students’ learning motivation was in the high category with a mean of 44.56 and standard deviation of 4.13, while mathematics learning achievement ranged from good to very good with a mean of 86.56 and standard deviation of 5.34. Spearman Rho correlation analysis revealed a very strong and significant relationship between learning motivation and mathematics learning achievement (r = 0.949, p < 0.01). This finding confirms that increasing students’ learning motivation positively affects their mathematics achievement. The study suggests that teachers should continuously motivate students to improve mathematics performance.
Polyurethane Degrading Bacteria Isolated from Decayed Teak Wood (Tectona grandis Linn. f.) Farah Aldila; Ari Susilowati; Ratna Setyaningsih
Jurnal Biodjati Vol 4 No 2 (2019): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v4i2.4525

Abstract

Polyurethane is a class of polymers characterized by their substantial tensile strength and high melting points which enables them to be extremely durable. Despite its xenobiotic origin, polyure-thane has been found susceptible to biodegradation by microorgan-isms. The main object of this research was to investigate polyurethane degradation by the bacterium isolated from decayed teak wood (Tec-tona grandis Linn. f.). Polyurethane degrading bacteria were isolated using selective medium in the form of LB (Luria Bertani) with the ad-dition of 0.3% Impranil. Bacterial biodegradation activities shown by the changes of polyurethane structure analyzed by FT-IR spectrosco-py. The bacterial identification was carried out based on observations on the morphological characteristics of the colonies, cell morphology and sequences of 16S rRNA encoding genes. One of the potential iso-late that successfully isolated was K9, which demonstrates the disap-pearance of the 1735/cm peak of the characteristic function urethane in the FT-IR analysis. Analysis of the 16S rRNA encoding gene showed that the potential isolate having 98% similarity index to Bacillus safen-sis strain FO-36b. The activity shown by the isolate suggests that the bacteria could be a promising agent for polyurethane degradation. 
Co-Authors Adi Nugroho Susanto Putro Anisa Nurul Hanifa Antonius Suwanto ARI SUSILOWATI Ariffah Ana Fathonah CHARIS AMARANTINI Citra Andini Edwi Mahajoeno Farah Aldila Fatia Rizki Nuraini Febriyanti, Siti Harto, Sugik Hesti Sadtyadi Husna Syaima Iman Rusmana Khairunnisa, Hera Kismiani Kismiani Manurung, Herlina Marjianto Marjianto Mohammad Agung Ridlo, Mohammad Agung Mudita Wandani Mugiyo Mugiyo, Mugiyo Nibras Anny Khabibah Novianti Novianti Petrolis Nusa Perdana, Petrolis Nusa PRIHASTO SETYANTO Prihasto Setyanto Putranto, Dwiyono Rachmat Mudiyono, Rachmat Rahayuningsih, Tutik Rispatiningsih, Dwi Maryani Sentot Budi Rahardjo Siti Afidatul Khotijah, Siti Afidatul Siti Rokhaniyah Sujiono Sujiono, Sujiono Susanto, Bela Novita Amaris Susila Widhiyanti Susilo, Ghina Fitri Ariesta Tjahjadi Purwoko TRI YAHYA BUDIARSO Vico, Yoel Wardani, Dayu Cahya Widia Darma Wihardiyani, Wihardiyani Wulan, Ayuning Yona Intan Zariska Yovanisa Meirawati