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All Journal Abdimas Sainteknol : Jurnal Sains dan Teknologi Biosfer: Jurnal Tadris Biologi Biotropika Indonesian Journal of Biotechnology Phenomenon : Jurnal Pendidikan MIPA Journal of Biology Education Unnes Science Education Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) BIOEDUSCIENCE Biosaintifika: Journal of Biology & Biology Education Journal of Innovative Science Education Physics Education Research Journal Berkala Penelitian Hayati Life Science International Journal of Research Innovation and Entrepreneurship Prosiding Seminar Nasional Pascasarjana Proceeding of International Conference on Science, Education, and Technology Biosaintifika: Journal of Biology & Biology Education
Retno Sri Iswari
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences Other

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Development of Tools Growth Catfish Based on the Internet of Things (IoT) Ahmad Minanur Rohim; Edy Cahyono; Retno Sri Iswari
Physics Education Research Journal Vol 4, No 2 (2022)
Publisher : Faculty of Science and Education, UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/perj.2022.4.2.12178

Abstract

Factors that affect the growth of catfish include water temperature, pH levels, and feeding according to the growth of catfish. Feeding and water replacement are currently still done manually, using human power. Maintaining feed and water quality in the tub automatically is necessary to save time and effort. The automatic settings to maintain feed and water temperature as well as good water acidity for catfish in the tub can use the NodeMCU microcontroller. This research method is carried out by designing tools, testing tools, objects and stages of tools and concluding. Parameters of water temperature and pH levels of water are sent to the telegram application, as well as to regulate the discharge of water, a pump that works automatically is used through a relay that is installed automatically. The monitoring results are successfully displayed via the ThingViewer application. The tool has worked well with tests carried out including testing the design of the tool, testing the temperature sensor, testing the pH sensor, and testing the sending of orders from Telegram. The yields obtained were different between the two treatments, namely without using tools (non-tools) using tools (tools), the ideal growth of catfish for a temperature of 29 °C and a minimum pH of 6.5 and a maximum of 9.
Pengaruh Pemberian Vitamin A terhadap Penurunan Parasitemia Mencit Strain Swiss yang diinfeksi Plasmodium berghei Umi Isnaeni; Retno Sri Iswari; Nugrahaningsih WH; R. Susanti
Biosaintifika: Journal of Biology & Biology Education Vol 4, No 2 (2012): September 2012
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v4i2.3930

Abstract

Vitamin A merupakan vitamin yang berperan sebagai imunostimulan. Penelitian ini bertujuan untuk mengetahui apakah pemberian vitamin A dapat menurunkan parasitemia Plasmodium berghei pada mencit strain Swiss. Penelitian ini menggunakan 24 ekor mencit strain Swiss jantan berumur 6-8 minggu dengan berat badan 20-30 gram/ekor. Penelitian dilaksanakan secara eksperimental dengan menggunakan time series design. Dalam penelitian ini dilakukan perlakuan berupa pemberian vitamin A dengan 3 variasi dosis yaitu 0 IU/g BB, 35 IU/g BB dan 70 IU/g BB serta kelompok kontrol negatif dengan masing- masing kelompok terdiri dari 6 ekor mencit. Vitamin A diberikan 1 jam sebelum penginfeksian dan mencit dirawat sampai mencit pada kelompok kontrol negatif mati. Sediaan apus darah tipis dibuat 2 hari sekali dan parasitemia dihitung dengan pengecatan Giemsa. Data parasitemia dianalisis dengan ANOVA.Untuk hasil yang signifikan maka dilanjutkan dengan uji lanjut Post hoc pada taraf kesalahan 1%. Hasil uji ANOVA untuk kelompok perlakuan B, C dan D diperoleh nilai p 0,001 pada masing-masing kelompok perlakuan. Hal tersebut menyatakan bahwa adanya perbedaan yang signifikan pada perlakuan yang diberikan. Begitu juga untuk uji lanjut Post hoc yang telah dilakukan diperoleh nilai p 0,001. Dapat disimpulkan bahwa pemberian vitamin A berpengaruh terhadap penurunan parasitemia Plasmodium berghei pada mencit strain Swiss.Vitamin A is a vitamin that acts as an immunostimulant. This research aims to determine whether the administration of vitamin A can reduce parasitaemia of Plasmodium berghei in Switzerland strain mice. This research used 24 mice Switzerland strain mice 6-8 weeks old weighing 20-30 grams/tail. Research conducted experimentally by using time series design. In this research, the provision of vitamin A treatment with 3 doses of variation is 0 IU/g BW, 35 IU/g BW and 70 IU/g BW as well as the negative control group, with each group consisting of 6 mice. Vitamin A was given 1 hour before infection then treated mice to mice in the negative control group died. Thin blood smears were made 2 days and parasitaemia was calculated by Giemsa staining. Parasitaemia data were analyzed with ANOVA. Significant results then followed by a further test Post hoc at 1% error level. ANOVA test results for the treatment group B, C and D obtained value of p 0.001 for each treatment group. It is claimed that there are significant differences in the treatment given. Likewise for further Post hoc testing that has been done obtained value of p 0.001. It can be concluded that the administration of vitamin A affects the reduction in parasitaemia of Plasmodium berghei in Switzerland strain mice.
Biochemical and Histopathology Analysis of Liver Damage in Hypercholesterolemic Rats Induced by Tomato Extract Retno Sri Iswari; Muchamad Dafip; Muhammad Rifa'i
Biosaintifika: Journal of Biology & Biology Education Vol 12, No 3 (2020): December 2020
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v12i3.23337

Abstract

Hypercholesterolemia is a condition caused by high cholesterol consumption. Tomatoes is well known has cholesterol-lowering effects. However, high consumption of tomato shall be concerned especially prooxidant potential that may damage the organ, especially in liver. This study aims to understand the effect of hypercholesterolemic and tomato administration to the rat’s liver, which is monitored using aspartate transaminase (AST), alanine transaminase (ALT) and histological condition. A total 24 of 12-weeks-old male-rats divided into 4 groups, equally. The K1 as normal group consist of placebo-treatment rats; K2 group as hypercholesterolemia group induced with high-cholesterol diet and 2 ml of cholesterol; K3 group was hypercholesterolemia rats treated with 20 mg of atorvastatin; and the last is K4 group was cholesterol rats supplemented with 16 mg/ day of tomato extract. All samples were treated for 60 days. The highest levels of AST and ALT level was 76.39 U/L and 45.40 U/L, respectively, was found in K2. Then, K4 is not significantly different from K3 and K1 and significantly different from K2. The scoring results showed that all groups experienced damage in the form of parenchymal degeneration, fat degeneration and necrosis. From this study it can be concluded that tomato extract gives a protection to the liver from cholesterol-oxidation damage effect. The updating information about how tomato inhibite liver fattening. The liver condition probably can be considered as biomarker-related hypercholesterolemia and developed a diagnostic marker to prevent increases metabolic disorder in community.
The Potential of Cnidoscolus chayamansa Alchoholic Leaves Extract as Hypolipidemia Agent Retno Sri Iswari; Ibnul Mubarok; Fitri Arum Sasi
Biosaintifika: Journal of Biology & Biology Education Vol 12, No 1 (2020): April 2020
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v12i1.23687

Abstract

Cardiovascular disease caused by hyperlipidemia is the highest case in term of fatality of non-infectious disease in Indonesia. Cnidoscolus chayamansa is well known as a herb that has nutraceutical potential for medicine and likely as a hypolipidemia agent. Therefore, this study aimed to identify the optimal dose of C. chayamansa as a candidate to treat cardiovascular diseases. A total of 30 white rats were acclimatized in the laboratory for 14 days. After that, the rats were grouped into six groups, randomly, which including a healthy control group (K0), a negative control group or hyperlipidemic rats (K-), a positive control group or hyperlipidemia-induced rats that was supplemented with atorvastatin (K+), then a hyperlipidemic rats treated with alcoholic extract of C. chayamansa leaves at doses of 100 mg /kgBB /day for K1, 200 mg/ kgBB/ day for K2 and 400 mg/ KgBB/ day for K3. The results showed that K3 treatment is the most effective and optimum dose for lowering total cholesterol level at 76.81±1.10 mg/dl, triglycerides 72.39±1.66 mg/dl and LDL-C at 21.47±0.58 mg/dl. The aortic histology assessment also showed that the K- group had putative thrombus or plaque in intima, and it was not found in other groups. This research focused on the optimum dose and new usage of C. chayamansa, as an anti-inflammatory in atherosclerosis. By understanding the optimum dose of C. chayamansa, the community can apply and control the herb consumption for their own therapeutic properties. For future application, the herb is potentially developed as anti-atherogenic medicine.
Antioxidant Activity from Various Tomato Processing Retno Sri Iswari; R Susanti
Biosaintifika: Journal of Biology & Biology Education Vol 8, No 1 (2016): March 2016
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v8i1.4722

Abstract

Tomato is one of the high antioxidant potential vegetables. Nowadays, there are many techniques of tomato processings instead of fresh consumption, i.e. boiled, steamed, juiced and sauteed. Every treatment of cooking will influence the chemical compound inside the fruits and the body's nutrition intake. It is important to conduct the research on antioxidant compound especially lycopene, β-carotene, vitamin C, α-tocopherol, and its activity after processing. This research has been done using the experimental method. Tomatoes were cooked into six difference ways, and then it was extracted using the same procedure continued with antioxidant measurement. The research results showed that steaming had promoted the higher antioxidant numbers (lycopene. α-tocopherol, β-carotene and vitamin C) and higher TCA and antioxidant activities in the tomatoes than other processings. It was indicated that steaming was the best way to enhance amount, capacity and activities of antioxidants of the tomatoes.
Analisis Pengetahuan Siswa SMA Terhadap Keselamatan Kerja di Laboratorium Mila Trisna; R. Susanti Susanti; Retno Sri Iswari
BIOEDUSCIENCE Vol 5 No 2 (2021): BIOEDUSCIENCE
Publisher : Universitas Muhammadiyah Prof. Dr. Hamka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/j.bes/526672

Abstract

Background: A laboratory is a learning tool for conducting experiments or observations. Knowledge of workplace safety procedures and laboratory tools and materials can simplify and streamline the learning process. This study aims to analyze the knowledge of high school students on laboratory work safety material. Methods: This study is a quantitative study, namely research that describes students' knowledge of laboratory work safety. The research subjects were students of class X MIA 1 and MIA 2 SMAN 7 Jambi City, class X students of SMAS Insan Madani Jambi. Primary data on students' abilities about work safety in the laboratory were measured by a multiple-choice test consisting of 4 alternative choices, namely A, B, C, and D. Secondary data were taken by using an interview sheet for class X biology. Data were analyzed according to Miles and Huberman, namely data reduction, display data, and conclusions. Results: High school students' knowledge of work safety materials in the laboratory is still low, namely 61.86%. Students' knowledge of how to use the tools and their functions showed the lowest percentage, namely 55.36% (poor category), while the safety aspect of laboratory work showed the highest percentage, namely 73.71% (sufficient category). Conclusion: High school students have low knowledge in understanding work safety material in the laboratory. It is necessary to deepen the material so that students' knowledge of laboratory work safety increases.
Desain Smart Hydroponic sebagai Media Belajar Fisika Materi Energi Terbarukan Faiz Mudhofir; Edy Cahyono; Sigit Saptono; Sulhadi Sulhadi; Putut Marwoto; Retno Sri Iswari
Prosiding Seminar Nasional Pascasarjana Vol. 5 No. 1 (2022)
Publisher : Pascasarjana Universitas Negeri Semarang

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Abstract

Pengetahuan siswa tentang pemanfaatan dan masa depan energi menjadi ditekankan dalam pembelajaran fisika. Penelitian ini bertujuan untuk memberikan gambaran desain media belajar fisika materi energi terbarukan. Media belajar yang dirancang adalah pengembangan smart hydroponic bertenaga panel surya. Komponen utama desain smart hydroponic ini adalah panel surya, controller, accu, inverter, sensor TDS, sensor pH, pompa air, dan katup otomatis. Tanaman yang digunakan adalah sayuran jenis Selada. Komponen pendukung yang lain adalah penggunaan nutrisi A dan B sebagai sumber nutrisi tanaman. Sebelum diterapkan sebagai media pembelajaran, media smart hydroponic ini diuji nilai tepat guna dan validitasnya. Hasil uji coba desain alat memberikan hasil yang efektif dan efisien untuk diterapkan pada budidaya tanaman sayur selada. 
Analisis Resonansi Pada Wine Glass Menggunakan Aplikasi Phyphox Wawan Wawan; Putut Marwoto; Retno Sri Iswari; Sudarmin Sudarmin; Woro Sumarni
Prosiding Seminar Nasional Pascasarjana Vol. 5 No. 1 (2022)
Publisher : Pascasarjana Universitas Negeri Semarang

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Abstract

Peristiwa resonansi banyak digunakan dalam pembuatan alat musik. Peristiwa resonansi ini akan menghasilkan berbagai nada yang indah. Penelitian ini bertujuan untuk menganalisis kejadian resonansi pada wine glass menggunakan aplikasi phyphox. Pengujian dilakukan dengan menggunakan wine glass yang diisi dengan berbagai jenis, volume, dan suhu cairan. Pengukuran meliputi nilai frekuensi dan amplitudo menggunakan aplikasi Phyphox. Hasil penelitian menunjukkan bahwa frekuensi resonansi wine glass dipengaruhi oleh penambahan volume air dan penambahan berbagai jenis cairan. Peristiwa resonansi dengan penambahan jenis, volume, dan suhu cairan menghasilkan berbagai amplitudo dan bentuk gelombang.
Examining Activator and Carbonization Pineapple Crown Leaf Resistor: Wuluh Star Fruit and Calamansi Variant Intan Kusumawati; Putut Marwoto; Ani Rusilowati; Woro Sumarni; Retno Sri Iswari; Andi Mursidi
International Conference on Science, Education, and Technology Vol. 8 (2022)
Publisher : Universitas Negeri Semarang

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Abstract

Learning in the environmental physics course is directed at sharpening students' sensitivity to overcoming problems and utilizing the potential that exists in the environment. Waste management is the main focus in environmental physics learning, which in this research is pineapple crown leaf waste which has the potential as activated carbon to be processed into resistors. The purpose of this study was to test the activator and carbonization tool for pineapple crown leaves with the highest inhibition value. This activator is in the form of Wuluh star fruit and Calamansi. The carbonization tools are an infrared stove and a blue flame twister furnace. This research method is in the form of an experiment. This activity research is integrated with the STEAM-2C components. The data analysis technique is in the form of comparing the average resistance values ​​of the pineapple leaf resistor variations. It was found that = 0.067 MΩ; = 0.16 MΩ; = 0.12 MΩ; = 0.14 MΩ. It was concluded that the activator and carbonization tool for pineapple crown leaf with the highest inhibition values ​​were the Calamansi activator and Infrared stove carbonization tool. This research is expected to add insight into producing innovations that are tested experimentally as the implementation of environmental physics learning.
Collaborative Problem Solving Based Learning A Literature Review In Selected Journals Harjito Kusmanto; Woro Sumarni; Sri Wardhani; Wahyu Hardyanto; Putut Marwoto; Retno Sri Iswari
International Conference on Science, Education, and Technology Vol. 7 (2021)
Publisher : Universitas Negeri Semarang

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Abstract

The curriculum continues to develop along with the times. The rapid development of technology requires curriculum adjustments. The domain of knowledge is no longer the only core domain of the curriculum. The domains of skills, character, and meta learning play a role in successful learning. A learning model is needed that is able to activate the four curriculum components. One of them is a collaborative problem solving based learning model. How is this model implemented in science learning? Through this re search, the researcher tries to explore the related research results that have been reported in 5 selected journals.
Co-Authors A.A. Ketut Agung Cahyawan W Aditya Marianti Adystia, Yusdike Aeni, Riska Nuril Afridah, Ayu Ahmad Minanur Rohim Anam, M. Khairul Andi Mursidi Andi Setyo Wibawa, Andi Setyo Andin Irsadi Andreas Priyono Budi Prasetyo Anggraini, Fatimah Dwi Ani Rusilowati Anisatun Afidah, Anisatun Aprilia Indra Kartika, Aprilia Indra Ari Yuniastuti Azizah, Nahirotul Bambang Priyono Chatarina Umbul Wahyuni Dafip, Muchamad Dewi Mustikaningtyas Dita Selviana, Dita Dyah Rini Indriyanti Edy Cahyono Edy Cahyono Edy Cahyono Eli Trisnowati Endah Peniati Enni Suwarsi Rahayu F. Putut Martin H.B, F. Putut Martin Faiz Mudhofir Fatmawati, Zulfa Ayuningtyas Fidia Fibriana Fina Fakhriyah Fitri Arum Sasi Fitri Arum Sasi, Fitri Arum Fitria, Meutia Srikandi Gasem, Muhammad Husein Harjito Kusmanto Herlina, Rokhiyani Hidayatiningtyas, Kumala Hidayatiningtyas, Kumala Ibnul Mubarok Ibnul Mubarok Indah Susilowati Intan Kusumawati Irfana, Naily Jayanti, Septi Kartini, Intan Khairul Anam Khasanah, Khuswatun Khasanah, Khuswatun Koriatul Hidayah, Koriatul Krispinus Kedati Pukan Kristanti, Bela Siska Kukuh Santosa Laila, Nafisatul Latipah, Rina April Lisdiana Lisdiana Lupitasari, Laksita M Hidayatur Rohman Margareta Rahayuningsih Nugroho Edi K Maria Agatha Hertiavi Martien Herna Susanti meidina rahmawati Mila Trisna Muchamad Dafip Muhamad Mustofa, Muhamad Muhammad Rifa'i Muspikawijaya, Muspikawijaya Mustikawati Mustikawati Nana Kariada Trimartuti Negarani, Eryca Nur Bela Negarani, Eryca Nur Bela Noer Hayati Lestari Novita Ana Anggraini Nugrahani, Ristiana Nugrahaningsih WH Nugrahaningsih WH, Nugrahaningsih Nugraini, Anisa Ratna Nur Endah Assalma, Nur Endah Pramesti Dewi Pratama, Yesy Milda Paula Probowati, Desy Puji Rahayu Putut Marwoto R Susanti R Susanti R. Susanti R. Susanti R. Susanti Susanti R. Susanti, R. Susanti rahmawati, meidina Raini Anggun Mukhlisa, Raini Anggun Ratih Puspita Dewi, Ratih Puspita Reki, Winarto rifa'i, Muhammad Rina Rachmawati Rizki Oktavia, Rizki Rizki Puspita Dewi, Rizki Puspita Rofi’i, M Rohmah, Siti Naily Rosidah Rosidah Rusdiyana Rusdiyana S Sulhadi Saida, Nadhifatu Umaru Saida, Nadhifatu Umaru Saptorini Saptorini, Saptorini Sarwi Sarwi Sarwi Sarwi Sigit Saptono Siti Alimah Siti Fathonah Siti Fathonah Siti Harnina Bintari Sri Endhes Isthofiyani, Sri Endhes Sri Haryani Sri Mulyani Endang Susilowati, Sri Mulyani Endang Sri Ngabekti Sri Sukaesih Sri Wardhani Sudarmin Sudarmin Supriyanto - Supriyanto Supriyanto Syahrizal Ramadhan Syaifuddin Syaifuddin Syamsul Arifin Syarifah, Mila Nur Trisna, Mila Tyas Agung Pribadi, Tyas Agung Umi Hanum, Umi Umi Isnaeni Umi Isnaeni, Umi Virginia Ainin Kautsar Adiatmah, Virginia Ainin Kautsar Wahyu Hardyanto Wawan Wawan Woro Sumarni Yuliyani, Rahma Yuliyantika, Yuliyantika Yusdike Adystia Yustinus Ulung Anggraito