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Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 557
Author(s):  
Xiaoqiang Zhang ◽  
Yuanyuan Pan

In order to solve the problem of the spontaneous combustion of coal gangue, a coal gangue fire-extinguishing material of gel–foam was developed. The foaming agent was screened by the Waring blender method with varying foam amounts, and the superabsorbent foam stabilizer was synthesized by free radical polymerization. Moreover, the gel–foam was used in a spontaneous combustion of coal gangue mountain field practice. The results showed that when the mass fraction of sodium dodecyl sulfonate and coconut oil amide propyl betaine was 0.6% and 4:6, the foaming amount was as high as 1500 mL. When the mass ratio of chitosan to acrylic acid was 1:6, the neutralization degree was 80%, the cross-linking agent was 0.8%, and the initiator was 0.01%, the water absorption of the synthesized superabsorbent foam stabilizer reached 476 mL/g. The synthesized gel–foam was tested in a spontaneous combustion coal gangue hill in a certain area, and no reburning sign was found within one month.


HUMANIKA ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 173-192
Author(s):  
Benedecta Indah Nugraheni

PLP merupakan mata kuliah praktik lapangan untuk memberi pengalaman langsung secara komprehensif kepada mahasiswa Fakultas Keguruan dan Ilmu Pendidikan (FKIP) mengenai dunia persekolahan dan untuk mengembangkan berbagai kompetensi yang dimiliki seorang guru profesional. Dengan adanya pandemi covid-19, PLP dilaksanakan secara daring, sehingga mahasiswa tidak dapat memperoleh pengalaman secara langsung di sekolah tempat pelaksanaan PLP. Praktik ini menjadi kurang ideal untuk mata kuliah PLP. Penelitian ini bertujuan menganalisis hasil refleksi pengalaman mahasiswa peserta PLP secara daring untuk mengetahui penguasaan capaian pembelajaran yang telah ditetapkan, pengalaman-pengalaman positif yang diperoleh dan kendala yang dihadapi mahasiswa, sikap atau nilai-nilai yang berkembang dalam diri mahasiswa, serta pengalaman inspiratif dan niat-niat yang dibangun untuk pengembangan diri yang muncul berdasarkan hasil refleksi. Penelitian ini merupakan penelitian kualitatif. Hasil penelitian menunjukkan bahwa mahasiswa dapat menguasai capaian pembelajaran dengan baik dan sangat baik, mahasiswa memperoleh berbagai pengalaman positif dan pengalaman mengatasi kendala yang muncul akibat pandemi, ada sikap atau nilai-nilai yang berkembang dalam diri mahasiswa, mahasiswa memperoleh pengalaman inspiratif, dan muncul niat-niat dari mahasiswa untuk pengembangan diri. Dengan demikian, siklus belajar dalam experiential learning theory dialami oleh mahasiswa peserta PLP daring.School Introduction (PLP) is a field practice course to provide comprehensive direct experience to students of the Teacher Training and Education Faculty (FKIP) regarding school understanding and to develop the various competencies of a professional teacher. In the covid-19 pandemic, PLP has been implemented online, so students cannot gain experience directly at the school where PLP is implemented. This practice is less than ideal for the PLP course. This research aimed to analyze the results of reflections on the experiences of students participating in online PLP to determine the mastery of predetermined learning outcomes, positive experiences, obstacles faced by students, attitudes or values that were developed by students, inspirational experiences, and intentions for self-development that arises based on the results of reflection. This research was a qualitative research. The results showed that students could master learning outcomes well and very well, gained various positive experiences and experiences overcoming obstacles that arise due to the pandemic, developed attitudes or values, gained inspirational experiences, and developed intentions for self-development. Thus, the learning cycle in experiential learning theory was experienced by the students participating the online PLP.


Author(s):  
Akbar Lucky Firdaus ◽  
Dea Apsari Pramudana Putri ◽  
Arif Farhan Suroso

The purpose of this Field Practice Activity is to assess the efficiency of the COVID-19 task force's implementation in Selaawi District in dealing with COVID-19 and residents who have been proven positive for COVID-19. The Garut Regent's Decree establishes a Task Force for the Enforcement of Community Activity Restrictions in Selaawi District, Garut Regency. The technique that was used a Literature Review and the roadblocks that it faces, including measures to restrict the spread of the corona virus, which have not been maximized. People are progressively disobeying 3M's health recommendations, such as wearing masks, cleaning their hands with soap, and keeping a safe distance. The large-scale social restriction (PSBB) strategy has aided the implementation of physical distance in Indonesia since the start of the pandemic. The remedy to this problem is to enforce 3M (masks, distance, and hand washing) in a systematic manner, as well as passively 3T (testing, tracing, and treatment) and raise public awareness about the necessity of health procedures through the COVID-19 task force. In this method, the handling efforts can yield the best results and have been successful in lowering positive numbers and lowering deaths. Keywords: COVID-19, Emergency, Society, Implementation  


2021 ◽  
Vol 5 (1) ◽  
pp. 87-101
Author(s):  
Hamdi Mukhtar

Pandemic is one of the factors that causes online learning or commonly called online, reportedly online learning is less effective and disrupts the learning system because as is known many parties are not ready for this online system, both in terms of field practice, students, teachers, regulations, and various means of supporting these online learning. Whereas learning must run as effectively as possible so as not to be left behind in each lesson, therefore this paper will discuss the effectiveness of the learning about (1) the facilities or facilities needed by students and teachers in participating in online learning (2) online shows the flexibility of learning and independence in learning and motivation in learning (3) weak supervision of students and ineffective methods applied by teachers (4) less good signal in certain areas and the cost of internet quota which is quite expensive. The research method used is a qualitative literature method.


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