Carbon dots (CDs) have generated much interest because of their significant fluorescence (FL) properties, extraordinary photophysical attributes, and long-term colloidal stability. CDs have been regarded as a prospective carbon nanomaterial for various sensing applications because of their low toxicity, strong and broad optical absorption, high chemical stability, rapid transfer properties, and easy modification. To improve their functionality, CD/polymer composites have been developed by integrating polymers into CDs. CD/polymer composites have diversified because of their easy preparation and applications in sensing, optoelectronics, semiconductors, molecular delivery, and various commercial fields. Many review articles are available regarding the preparation and applications of CDs. Some review articles describing the production and multiple applications of the composites are available. However, no such article has focused on the types of precursors, optical properties, coating characteristics, and specific sensing applications of CD/polymer composites. This review aimed to highlight and summarize the current progress of CD/polymer composites in the last five years (2017–2021). First, we overview the precursors used for deriving CDs and CD/polymer composites, synthesis methods for preparing CDs and CD/polymer composites, and the optical properties (absorbance, FL, emission color, and quantum yield) and coating characteristics of the composites. Most carbon and polymer precursors were dominated by synthetic precursors, with citric acid and polyvinyl alcohol widely utilized as carbon and polymer precursors, respectively. Hydrothermal treatment for CDs and interfacial polymerization for CDs/polymers were frequently performed. The optical properties of CDs and CD/polymer composites were almost identical, denoting that the optical characters of CDs were well-maintained in the composites. Then, the chemical, biological, and physical sensing applications of CD/polymer composites are categorized and discussed. The CD/polymer composites showed good performance as chemical, biological, and physical sensors for numerous targets based on FL quenching efficiency. Finally, remaining challenges and future perspectives for CD/polymer composites are provided.

Korosi logam terjadi melalui reaksi elektrokimia simultan membentuk rangkaian arus listrik tertutup pada wilayah anoda dan katoda, penambahan inhibitor dapat digunakan sebagai salah satu cara untuk menghambat korosi. Ekstrak bunga dadap merah dapat berfungsi dengan baik sebagai inhibitor alami untuk mencegah korosi pada besi, baik pada media air akuades maupun air laut. Pengaruh perbedaan konsentrasi ekstrak bunga dadap merah yang diberikan memberikan efek penurunan bertambahnya massa logam Fe. Pada ekstrak konsentrasi 20%, mula-mula berat paku 2,484 gram menjadi 2,488 gram pada media air akuades dan 2,436 gram menjadi 2,442 gram pada media air laut. Hal ini menunjukkan bahwa besar konsentrasi, maka proses terjadinya korosi sangat sulit terjadi.

Rendahnya mutu lulusan berakibat pada rendahnya kemampuan kompetitif dan komperatif lulusan. Namun pada kenyataannya banyak siswa SMA yang tidak dapat melanjutkan ke jenjang pendidikan yang lebih tinggi sehingga berpotensi untuk menjadi pengangguran. Dalam penelitian ini untuk meningkatkan minat kewirausahaan dan respon siswa proses pembelajaran kimia perlu adanya suatu inovasi dan pembaharuan dalam suatu pendekatan Chemo-Entrepreneurship (CEP). Kabupaten Bener Meriah merupakan bumi yang subur dan mempunyai beraneka ragam sumber alam yang dapat diolah menjadi bahan makanan. Sesuai dengan hasil penelitian dari tanggal 17 – 21 Juli 2017 siswa kelas IPA-2 ke sekolah SMAN I Bukit di Kebupaten Bener Meriah. Subjek dalam penelitian ini adalah siswa kelas X SMA N 1 Bukit yang berjumlah 25 siswa. Rancangan penelitian yang digunakanadalah Penelitian Tindakan Kelas (PTK) yang terdiri dari perencanaan, tindakan, pengamatan danrefleksi.Teknik pengumpulan data yang digunakan dalam penelitian ini dengan cara observasi, test dan angket. Data yang diperoleh dianalisismenggunakanpersentase mengenai minat kewirausahaan, dan responsiswa dengan pendekatan Chemo-Entrepreneurship (CEP) pada materi perubahan kimia. Minat kewirausahaan siklus I 20% pada siklus ke II menjadi 47 % dan ternyata respon siswa yang menyatakan positif sekitar 83,2 % dan menyatakan negative hanya 16,8 %   The low quality of graduates leads to low competitive and comparative abilities of the graduates. Many high school students cannot continue to pursue higher education. This condition resulted in an increasing number of unemployed. In this study, to increase entrepreneurial interest and students' responses to the chemistry learning process, there needs to be an innovation and renewal in a Chemo-Entrepreneurship (CEP) approach. Bener Meriah Regency is a fertile land and has a variety of natural resources that can be processed into food. The study was carried out from July 17-21, 2017 to students of IPA-2 class at SMAN I Bukit in Bener Meriah Regency. Subjects in this study were 25 students of class X SMA N 1 Bukit. The research design used was Classroom Action Research (CAR) consisting of planning, action, observation, and reflection. Data collection techniques used in this study was by observation, test, and questionnaire. The data obtained were analyzed using a percentage of entrepreneurial interest, and responses to the Chemo-Entrepreneurship (CEP) approach to chemical change material. Entrepreneurship interest in the first cycle of 20% in the second cycle became 47%, and it turned out that the response of students who stated positive was around 83.2% and indicated contrary only 16.8%.

The aim of this research was to increase the entrepreneurship interest and student learning result of chemistry learning process, The innovation and renewal in Chemo-Entrepreneurship (CEP) approach which is related to real objects (contextual) were needed so that the children were motivated and interested to learn chemistry. This research was implemented by IPA-2 students of SMAN I Bukit school that Bener Meriah District. The sample of this research was about 25 students. The research design used was the Class Action Research (PTK) which consists of planning, action, observation and reflection. Data collection techniques in this study were obtained by observation, pre test, post test, and questionnaire. The result of this research for the students' learning outcomes in the 1st cycle was showing that the student learning completeness about 36% with an average value about 63.77%, and in the 2nd cycle was obtained about being 84% complete value with an average value about 82.7%. Based on the result showing that the success of students increased in the 2nd cycle and student responses positively about 83.2%. The interest of the students of entrepreneurship interest was increased from 20% in 1st cycle to 47% in 2nd cycle and it turned out students who stated positively about 83.2% the student interest increased from I to cycle II i.e. 20% to 70%. Based on the results of this study can be concluded that the interest and learning outcomes were increased by the influence of CEP approaches.

Negara indonesia merupakan salah satu negara yang berada di wilayah rawan terhadap bencana alam gempa karena letak geografisnya yang berada pada pertemuan tiga lempeng tektonik besar di dunia, yaitu lempeng Indo-Australia, lempeng Eurasia dan lempeng Pasifik. Kesiapsiagaan bangunan akan bahaya gempa sangat direkomendasikan untuk mengurangi risiko yang ditimbulkan oleh kejadian gempa bumi yang tidak dapat diprediksi. Tujuan penulisan ini adalah mengevaluasi kesiapsiagaan bangunan pada salah satu Gedung Universitas Islam Negeri Ar-Raniry Kecamatan Syiah Kuala Kota Banda Aceh terhadap bencana gempa dan memberikan pilihan tindakan bagi kampus dalam upaya meningkatkan parameter kesiapsiagaan (struktur dan non struktur ) serta memberikan gambaran umum dalam melakukan monitoring terhadap kampus dalam mencapai indicator kampus aman bencana.  Metode dalam kegiatan simulasi ini adalah student centered learning dengan memberikan pemahaman kepada mahasiswa dan siswa (i) mengenai berbagai macam penyebab, jenis bencana gempa bumi, serta upaya apa yang dilakukan pada kondisi sebelum terjadinya bencana, saat terjsadinya bencana dan pasca bencana itu terjadi. Kegiatan ini berusaha untuk menggali pengalaman mahasiswa/i dan siswa (i) dalam menghadapi kesiapsiagaan bencana gempa bumi. Setelah itu dilakukan evaluasi berupa simulasi dan bentuk-bentuk scenario penyelamatan diri saat terjadinya bencana gempa bumi. Skenario ini dilakukan secara berulang-ulang sampai seluruh mahasiswa dan siswa (i) mampu dan biasa menerapkan kegiatan tersebut sesuai dengan instruksi yang diberikan oleh pihak yang terkait.  Berdasarkan hasil akhir dari kegiatan ini dapat di ambil kesimpulan bahwa mahasiswa/i dan siswa (i) mampu mengimplementasikan pengetahuan, sikap, tanggap darurat mampu meningkatkan kapasitas dalam menghadapi bencana gempa bumi.  Kata Kunci      : Simulasi, bencana, gempa bumi

Quality tourism which has been recently proposed as the tourism development paradigm is still poorly defined. This paper attempts to explore the literature on this subject. Having visited quality tourism in tourism, sustainable tourism, and marketing-related literature, we propose that it pertains to three aspects 1) quality, high-value, and satisfying tourism products and services, 2) consumers who will ‘happily’ pay more to enjoy the high-value experience, and 3) aspect of ethics, transparency, and respect towards human, nature, and culture. Further, using the three aspects of quality tourism as a framework, case studies are presented to (1) analyze the adoption of the quality tourism paradigm at community-based tourism destinations in Yogyakarta and, (2) propose recommendations to transform these destinations to become quality tourism destinations. The case studies on three tourism villages as community-based tourism destinations that some aspects to be enhanced include the development of High-Value Experience as Represented by the Price of Tourism Products/Packages, marketing strategies to target High-value Market Segments, and further adoption of sustainable tourism development practices.

A research has been carried out with the theme "Implementation of CTL-Based Worksheets on Material Changes to Increase Student Learning Motivation in Package B during the Covid-19 Period at SPNF Banda Aceh City". This study aims to determine the effectiveness of the application of Contextual Teaching and Learning (CTL)-based LKS on material changes used in SPNF SKB Banda Aceh and to determine student responses to the application of Contextual Teaching And Learning (CTL)-based LKS on material changes in SPNF SKB. Banda Aceh City. The benefits of this research are for students, the LKS Module can be used as a learning resource, so that it can increase interest in learning chemistry, and can relate the material to the surrounding environment; For teachers, the LKS Module can be used as teaching materials to assist teachers in creating interesting and interactive learning situations; For schools, this research is expected to contribute to improving the conditions of chemistry learning so that it can create a better quality of education in the future. In this research, the method of observation, test (pre-test and post-test) and questionnaire. The results of this study indicate a positive response as evidenced by the data generated.

<p>Di pasaran banyak kita temukan obat gosok. Obat gosok umumnya dibuat dari rempah rempah. Pembuatan dan pengemasannya bisa secara tradisional maupun modern. Obat gosok yang dibuat secara tradisional oleh masyarakat Mitra (Bapak Abubakar) mengguakan rempah-rempah seperti pala, jahe merah, ketumbar, kayu manis dan sebagai pengawet yaitu cuka. Obat gosok ini sangat bermamfaat bagi penderita ynag mengalami pegal-pegel, keseleo (terkilir), dan lain-lain. Obat gosok ini diproduksi oleh masyarakat Gampong Meunasah Intan Kecamatan Kreung Barona Jaya Aceh Besar ini masih menggunakan alat alat sederhana seperti wadah bekas cat, kayu dan proses penghalusan harus diantar kepasar. Dari hasil yang diperoleh tidak layak atau kurang bersih kelihatan dan kotor sehingga kualitas produksi rendah dan kurang menarik. Pada pengabdian ini, pendamping memberikan alat – alat yang berupa ember-ember plastik, mesin penghalus basah kering, mesin penghalus kering, mesin pemotong jahe, kayu pengaduk, oven, dan botol yang sudah didesain dengan baik dan menarik. Namun hal tersebut karena keterbatasan IPTEK pembuatan obat gosok abu tidak sesuai dengan standar yang ada. Dari alat yang diserahkan kepada mitra, hasil pengujian dan pelatihan alat-alat mitra dapat menghemat waktu dan dapat langsung digiling dirumah tidak kepasar lagi sehingga dapat menghemat waktu. Kemudian produksi dapat menghasilkan 200 botol dengan harga jual Rp. 20.000 per botol dengan isi botol 100 ml dan bermerek OGA. Berdasrkan hasil yang dicapai oleh mitra dapat disimpulkan dengan menggunakan alat – alat yang diberikan sangat membantu dalam waktu, dan hasil produksipun dapat meningkatkan kualitas dan produktivitas sehingga 80% dari semula dengan penghasilan akan bertambah dan dapat membuka lapangan pekerjaan.<br />Kata Kunci: obat gosok, OGA, rempah</p>