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Evolusi Mikrostruktur Paduan Al 6061 Hasil Proses Canai Dingin Terhadap Sifat Mekanik Alhamidi, Ali; Fitrullah, M.; Dewi, Mirnawati
TEKNIKA Vol 12, No 1 (2016): Juni
Publisher : Fakultas Teknik Universitas Sultan Ageng Tirtayasa

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Abstract

Paduan Al 6061 diproses canai dengan reduksi 50%, 60% dan 70% selanjutnya di aging pada temperatur 2000C selama variasi waktu 1800, 3600, 5400, 7200 dan 10800 detik. Analisa microstruktur dan sifat mekanik dilakukan dengan optikal mikroskop dan Brinell Hardness Test (HBN). Bentuk mikrostrukutr menunjukan bahwa butiran memanjang setelah canai berubah menjadi berbentuk equaxial. Analisa XRD menunjukan hadirnya fase ke dua Mg2Si dan Al2FeSi nampak dalam peak XRD setelah canai dan aging. Hal ini nampak bahwa kekerasan meningkat dengan meningkatnya waktu aging dan menurun setelah aging selama 7200 detik. Nilai kekerasan tertinggi dicapai sebesar 121 HBN pada sampel yang direduksi 70% dan ading selama 7200 detik.Hal ini menjadi alasan bahwa kekerasan yang tinggi akibat hadirnya fraksi fase kedua setelah aging meningkat.
MENINGKATKAN HASIL BELAJAR MATEMATIKA MENGGUNAKAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING (PBL) PADA SISWA KELAS VI UPTD SDN 136 INPRES BONTO TALLASA Dewi, Mirnawati; Kurnia, Rika; Lestari, Kiki Ayu
Global Journal Basic Education Vol 3 No 2 (2024): Mei
Publisher : Sains Global Institut, Indonesia

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Abstract

Mengatasi rendahnya hasil belajar dapat dilakukan dengan menerapkan model pembelajaran yang tepat. Adapun tujuan dari penelitian ini adalah untuk meningkatkan hasil belajar Matematika siswa kelas VI Sekolah Dasar dengan menerapkan model pembelajaran problem based learning. Metode penelitian yang diterapkan dalam penelitian ini yaitu penelitian tindakan kelas dengan teknik pengumpulan data berupa observasi pengamatan dan tes, teknik analisis data menggunakan perhitungan persentase. Hasil yang diperoleh pada siklus I di penelitian ini yaitu 64,29% yang mengindikasikan adanya permasalahan yang terjadi dalam proses pembelajaran, guru belum secara maksimal menerapkan model pembelajaran problem based learning dalam proses pembelajaran sehingga siswa masih merasa asing dengan penerapan model tersebut dan memperoleh hasil belajar dibawah KKTP atau <75 sehingga disimpulkan perlu dilanjutkan ke siklus II. Pada pelaksanaan siklus II guru sudah mampu memaksimalkan penggunaan model problem based learning dalam proses pembelajaran sehingga mampu membangkitkan semangat siswa dan membuat siswa terlibat aktif dalam diskusi maupun mandiri. Pada siklus II diperoleh peningkatan hasil belajar sebesar 82,14% dan dapat disimpulkan bahwa penerepan model problem based learning dapat meningkatkan hasil belajat Matematika siswa kelas VI di UPTD SDN 136 Inpres Bonto Tallasa.
Ekstrakurikuler Penggiat Sejarah di SMA Negeri 11 Banjarmasin Dewi, Mirnawati; Putro, Herry Porda Nugroho
Prabayaksa: Journal of History Education Vol 1, No 1 (2021): Prabayaksa: Journal of History Education (March)
Publisher : Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (696.4 KB) | DOI: 10.20527/prb.v1i1.3084

Abstract

This study discusses extracurricular activities for history activists at SMA Negeri 11 Banjarmasin. The limited subject matter taught in schools about local history in history subject makes students less aware of and familiar with the history of their own area. This study aims to describe the extracurricular activities of history activists at SMA Negeri 11 Banjarmasin. In this study used qualitative methods, in obtaining informations begins with interviews, observations and documentation which are used as research sources. There are two sources of data used in this study, namely primary data sources for coaches, student members of history activists, and secondary sources in the form data of data from schools. History activists extracurricular activities were formed as a place to channel the tallents of history activitiests whi focus on the introduction and knowledge of the local history of the South Kalimantan region.
IDENTIFICATION OF POTENTIAL CONTAINERS FOR AEDES LARVAE BREEDING IN DENGUE FEVER CONTROL AT PALANGKA RAYA UNIVERSITY Tuju, Fandi; Dewi, Mirnawati
PREPOTIF : JURNAL KESEHATAN MASYARAKAT Vol. 9 No. 1 (2025): APRIL 2025
Publisher : Universitas Pahlawan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/prepotif.v9i1.43621

Abstract

Wabah Demam Berdarah Dengue (DBD) masih menjadi masalah kesehatan masyarakat di Indonesia khususnya di Palangka Raya karena hingga saat ini masih di temukan kasus DBD. DBD ditularkan melalu gigitan nyamuk betina, sehingga mengidentifikasi tempat perindukan nyamuk sangatlah penting untuk menekan penularan penyakit ini. Habitat nyamuk memegang peranan penting dalam menentukan kepadatan larva, hingga perkembangan nyamuk dewasa. Penelitian ini bertujuan mengidentifikasi tempat perindukan larva nyamuk yang sering terabaikan. Penelitian ini bersifat observasional dan survei jentik dilakukan pada tujuh titik lokasi di area Universitas Palangka Raya pada tahun 2024. Hasil pengamatan menunjukkan bahwa beberapa tempat perindukan larva nyamuk yang sering diabaikan yaitu vas bunga, genangan air dan sampah wadah plastik. Jenis larva nyamuk yang di temukan yaitu Aedes aegypti dan Aedes albopictus, kedua nyamuk ini berperan pada penularan DBD. Wadah perkembangbiakan potensial yang ditemukan di lokasi penelitian menekankan bahwa pentingnya kepedulian dari setiap individu di permukiman dalam pengendalian vektor ini.
Penerapan Kecerdasan Buatan dalam Penelitian Demam Berdarah: Analisis Bibliometrik: Applying Artificial Intelligence in Dengue Fever Research: A Bibliometric Analysis Dewi, Mirnawati; Kristin, Jane
Jurnal Surya Medika (JSM) Vol. 11 No. 1 (2025): Jurnal Surya Medika (JSM)
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/jsm.v11i2.9755

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Nyamuk genus Aedes merupakan nyamuk yang berperan menularkan demam berdarah dengue (DBD). Penerapan teknologi melalui serangkaiaan proses komputasi telah dimanfaatkan untuk mencegah penyebaran dan memberantas DBD. Sehingga studi ini bertujuan menganalisis penelitian DBD dari tahun 2015 hingga Oktober 2024 melalui analisis teknologi bibliometrik. Pendekatan analisis data bibliometrik yang merupakan perkembangan penelitian dalam kecerdasan buatan (AI) yang mengidentifikasi dan mendeteksi penelitian kasus dengue secara otomatis. Perangkat lunak yang digunakan yaitu VOSviewer dan Publish or Perish (PoP) untuk mengeksplorasi tren publikasi. Sebanyak 200 artikel dianalisis, yang menunjukkan peningkatan penelitian dengue menggunakan teknologi komputasi dalam lima tahun terakhir. Studi ini menunjukkan pemrosesan dan visualisasi data bibliometrik yang efektif, memberikan wawasan mendalam tentang pola dan tren dalam penelitian dengue. Hasil studi ini pula menunjukkan metode kecerdasan buatan yaitu deep learning pada penelitian dengue masih sedikit yang mencerminkan fokus utama dalam penelitian dengue kedepannya. Sehingga memberikan kontribusi yang signifikan terhadap upaya global untuk mengendalikan dan memberantas penyakit ini, khususnya di Indonesia.
Masyarakat Bebas Vektor dan Binatang Pembawa Penyakit dengan Konsep Pemberdayaan Ibu PKK Dewi, Mirnawati; Krestina, Widya; Wanto, Wahyu Anggar
Society : Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol. 5 No. 2 (2025): Vol.5 No.2, April 2025
Publisher : Universitas Dinamika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37802/society.v5i2.888

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This is a new author guidelines and article template of Manhaj: Jurnal Penelitian Vectors are insects, rodents, birds, or other animals that can carry disease pathogens. The most common vectors are blood-sucking insects, such as mosquitoes and ticks. Vector-borne diseases occur in animals and humans. However, animals can sometimes carry harmful germs that can spread to humans and cause diseases – these are known as zoonotic diseases. Zoonotic diseases are caused by harmful germs such as viruses, bacteria, parasites, and fungi. This service aims to increase public knowledge about vector bioecology and disease-carrying animals so that the community can carry out appropriate control independently. The activity method is in the form of material delivery, answers, and tests. The results of the pre-test showed that 75% of participants did not understand that what was a vector and 50% of participants did not know the type of vector. 56.25% of participants did not know that rats played the role of disease carriers. The results of the post test showed that 100% of the participants knew about the vector and the animal that carried the disease.
PENGENALAN BIOEKOLOGI VEKTOR DAN BINATANG PEMBAWA PENYAKIT SEBAGAI UPAYA MEWUJUDKAN MANDIRI KESEHATAN DI LKSA/PANTI ASUHAN DARUL TAZKIYAH PALANGKA RAYA MANDIRI KESEHATAN Dewi, Mirnawati; Tuju, Fandi; Mustika, Maya; Kalalinggi, Septaria Yolan
Jurnal Abdi Insani Vol 11 No 4 (2024): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v11i4.1946

Abstract

Vector-borne diseases are a diversified group of diseases, caused by various pathogens transmitted by rats and arthropod vectors, such as mosquitoes, ticks, and flies. Previous research shows that cases of infectious diseases in Islamic boarding schools/orphanages are found, including dengue, scabies and pediculosis. Some Islamic boarding schools have poor environmental conditions, including toilets, damp and closed dormitories, poor ventilation and lighting, and poor environmental sanitation. Student behavior towards cleanliness and maintaining health is considered to be lacking. Through this service, it is hoped that residents at LKSA/Panti Asuhan Darul Tazkiyah can maintain personal cleanliness and residence so as to reduce the population of vectors and disease-carrying animals in the settlement. The activity was carried out through the method of socialization and two-way discussion. Scouts were given at the beginning of the activity to measure the level of knowledge of participants about vectors and disease-carrying animals. The results of the questionnaire showed that 94% of the participants did not have knowledge about the bioecology of vectors and disease-carrying animals. After the socialization and discussion stage, it can be concluded that participants understand the bioecology of each type of vector (flies, cockroaches, mosquitoes) and disease-carrying animals (rats).
A bibliometric Analysis of Biopesticides in Mosquito Control: Current Trends and Future Prospects Dewi, Mirnawati; Tuju, Fandi; Wanto, Wahyu Anggar
Aspirator Vol 16 No 1 (2025): Jurnal Aspirator Volume 16 Nomor 1 2025
Publisher : Perkumpulan Entomologi Kesehatan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58623/aspirator.v16i1.83

Abstract

Mosquitoes are insects that play a role in the balance of the ecosystem. However, some species of mosquitoes are detrimental because they act as disease carriers (vectors) for humans and animals. The increasing mosquito population is feared to have the potential to become a vector, prompting various efforts to reduce the population, including the use of biopesticides. This article aims to analyze and visualize the research trends on b biopesticides in mosquito control over the past 19 years and to identify potential research topics related to biopesticides for future studies. The methodology used in this article involves a literature review conducted through Publish or Perish and bibliometric analysis using the VOSviewer databases, which collectively encompass 1000 papers. Assessing scientific research progress is crucial for formulating goals and rationalizing future efforts. Based on the results of the bibliometric analysis, biopesticides derived from Bacillus thuringiensis, as well as bacteria, fungi, and other types of microbes, have the potential to be researched and developed as mosquito vector control biopesticide products. Microbial pesticides obtained from actinomycetes, Bacillus thuringiensis (Bt), B. sphaericus (Bs), Lysinibacillus sphaericusand, Saccharopolyspora spinosa, Wolbachia and many other microorganisms are reported as environmentally friendly alternatives for mosquito control.
The Potential of Hanjuang Merah (Cordyline fruticose) Antibacterial Liquid Body Wash Rahayu, Emy; Rahmanina, Lilih; Pasaribu, Tupaida; Maulida, Maulida; Dewi, Mirnawati
Biology, Medicine, & Natural Product Chemistry Vol 14, No 1 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.141.499-506

Abstract

The skin is the outermost layer of tissue that has the function of covering and protecting the surface of the human body. Unhygienic skin will trigger skin infections caused by various microorganisms. One of them is bacteria. Hanjuang merah (Cordyline fruticosa) is a type of plant that is often used as a traditional medicine, especially for the Dayak community. However, research on the use of the Cordyline fruticosa plant in producing liquid body wash formulations that are efficacious as antibacterial against Staphylococcus aureus has not been carried out so far. The purpose of this study is to identify the potential of Cordyline fruticosa as a formulation of liquid body wash formulations and to find the effectiveness of Cordyline fruticosa in inhibiting infections caused by S. aureus bacteria made in the form of liquid body wash. The method used in the extraction is maceration and the manufacture of liquid body wash according to the formulation that has been made, while the disc diffusion method with concentrations of 5% (F1), 10% (F2), and 15% (F3) is used in antibacterial tests. Liquid body wash preparations with the largest inhibitory zone level at a concentration of 15% (F3). The concentration of 15% (F3) is effective in inhibiting the growth of S. aureus bacteria which is characterized by the formation of an inhibition zone around the disk.
The Implementation of Hadrah Art Extracurricular Program to Enhance Qur’anic Learning Motivation among TPA Students in Lampung Wibowo, Wahyu Hadi; Dewi, Mirnawati
Episteme: Jurnal Kajian Mahasiswa Vol. 1 No. 2 (2025): Episteme: Jurnal Kajian Mahasiswa
Publisher : Sekolah Tinggi Ilmu Tarbiyah Bustanul Ulum Lampung Tengah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62448/episteme.v1i2.172

Abstract

Many children today face difficulties in learning the Quran, mainly due to a lack of interest, which hampers knowledge retention. Interest is crucial in the learning process, and without it, students struggle to absorb information. To address this issue, Raudlatul 'Ulum Al-Qur'an Education Park implemented an extracurricular program to foster greater engagement and enthusiasm for learning. This research investigates the background, implementation, and impact of these activities. Using a qualitative case study approach, data were collected through observations, interviews, and documentation. The findings reveal that extracurricular activities, held on weekends and in line with the institution’s mission, effectively increased students’ interest in learning. This resulted in greater enthusiasm and diligence, helping students overcome initial boredom and laziness, while improving their Quran recitation and learning experience.