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All Journal Jurnal Penelitian dan Evaluasi Pendidikan Edu-Sains: Jurnal Pendidikan Matematika dan Ilmu Pengetahuan Alam Jurnal Psikologi Global Medical and Health Communication Gadjah Mada Journal of Psychology JCES (Journal of Character Education Society) Eksakta : Berkala Ilmiah Bidang MIPA Jurnal Review Pendidikan Dasar : Jurnal Kajian Pendidikan dan Hasil Penelitian Jurnal Kesehatan: Jurnal Ilmu- Ilmu Keperawatan, Kebidanan, Farmasi dan Analis Kesehatan KONSELING EDUKASI : Journal of Guidance and Counseling Jurnal Psikologi: Indonesian Journal of Psychology Buletin Psikologi Journal of Civil Engineering and Vocational Education
Ratna Wulan
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Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Public Health Social Sciences Transportation Other

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Effect of Polyvinyl Alcohol (PVA) Concentration and Stirring Time on The Mechanical Properties of Biodegradable Plastic from Kepok Banana Peel Starch Doni, Monica Anatasya; Jonuarti, Riri; Wulan, Ratna; Jhora, Fadhila Ulfa
CIVED Vol. 10 No. 3 (2023): September 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i3.499

Abstract

One solution is to use bioplastics, which can replace synthetic plastics that are difficult to decompose. Starch is one of the materials used in the manufacture of bioplastics because it is naturally degradable. However, bioplastics made from starch tend to be brittle and easily damaged, so additional materials are needed to overcome this problem. Polyvinyl alcohol (PVA) is one of the materials used in the manufacture of bioplastics because it has properties that can be degraded naturally, is non-toxic, and is able to form good quality plastic films. This study aims to examine the effect of PVA concentration and stirring time on the mechanical properties of biodegradable plastic derived from kepok banana peels. This study used a completely randomized design with three variations of PVA concentration (3%, 4%, and 5%) and three variations of stirring time (25 minutes, 35 minutes, and 45 minutes). The results showed that at a PVA concentration of 5% with a stirring time of 45 minutes, bioplastics showed the best quality with a tensile strength value of 2.25 MPa, the best elongation at break was 416%, and the best elasticity was 0.541. In biodegradation, all samples were completely degraded within 7 days. It can be included that the addition of PVA concentration and the length of stirring effecth the mechanical properties of bioplastics but not on the biodegradation test.
Terapi Realitas Dan Konsep Sabar Dalam Physical Distancing Mahasiswi Di Asrama Astri Aulia Wulan, Ratna
Konseling Edukasi : Journal of Guidance and Counseling Vol 4, No 2 (2020): Konseling Edukasi: Journal Of Guidance and Counseling
Publisher : IAIN Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21043/konseling.v4i2.7851

Abstract

Reality Therapy And Patience Concept In Physical Distancing Students At Astri Aulia Hostel. Covid-19 is a highly contagious disease that can shake an individual's psychological well-being. One way to break the chain of distribution is to live a clean lifestyle, wash hands, use masks and build physical distancing to stay at home and do all the activities in the house. Physical distancing, of course, will cause anxiety factors, because it narrows individual activities in the house, so this is where patience is needed to accept such needs. The research focuses on reality therapy and the concept of patience in carrying out physical distancing of female students at the Astri Aulia Yogyakarta dormitory. This research is a field research using qualitative descriptive methods. Data collection techniques are done by observation, interview and documentation. The results of the study are reality therapy and the concept of patience is able to have an impact on the client and in terms of religion, reality therapy is able to preserve patience in the lives of individuals to build physical distancing. Keywords: Physical Distancing; Patience; Reality Therapy
Co-Authors Ancok, Djamaluddin Doni, Monica Anatasya Dwi Astuti Irenaningtyas Fadhila Ulfa Jhora Faridah, Ida Hamdi Hamdi Mahargyantari Purwani Dewi Nurmaliati Nurmaliati Pauline Dwiana Chrisma Widjaja Qurniawati, Mila Riri Jonuarti Sedjati , Adjat Siti Qodariah Soepardan , Suryani Sulfiah, Wili Syakbaniah Syakbaniah Yulia Herawaty