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All Journal International Journal of Public Health Science (IJPHS) International Journal of Evaluation and Research in Education (IJERE) JURNAL ILMIAH PLATAX Jurnal Kesehatan Lingkungan indonesia Jurnal Periodic Jurusan Kimia UNP Jurnal Kesehatan Masyarakat Jurnal Kesehatan Andalas Journal of Degraded and Mining Lands Management SEMIRATA 2015 Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Preventif: Jurnal Kesehatan Masyarakat Jurnal Penelitian Kesehatan Suara Forikes Promotif: Jurnal Kesehatan Masyarakat Sumatra Journal of Disaster, Geography and Geography Education Jurnal Penelitian Pendidikan IPA (JPPIPA) COUNS-EDU: The International Journal of Counseling and Education JURNAL PENDIDIKAN TAMBUSAI Jurnal Kelautan Nasional International Journal of Educational Dynamics (IJEDS) Global Conference Index Menara Ilmu Pelita Eksakta Sainstek : Jurnal Sains dan Teknologi Science and Environmental Journals for Postgraduate Natural Science: Jurnal Penelitian Bidang IPA dan Pendidikan IPA AEEJ : Journal of Automotive Engineering and Vocational Education PRIMER (Prima Medical Journal) Dinamika Lingkungan Indonesia Jurnal Pijar MIPA MASALIQ: Jurnal Pendidikan dan Sains Jurnal Pengabdian Pada Masyarakat Jurnal Kependudukan dan Pembangunan Lingkungan (JKPL) Gudang Jurnal Multidisiplin Ilmu Ta'dib Asian Journal of Science, Technology, Engineering, and Art Al-Ihtiram: Multidisciplinary Journal of Counseling and Social Research Economics Development Analysis Journal Jurnal Pendidikan MIPA Journal of Current Research in Humanities, Social Sciences, and Business Kesmas: Jurnal Kesehatan Masyarakat Nasional (National Public Health Journal)

Indang Dewata

Universitas Negeri Padang

Author-ID : 252168

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The Influence Of Using Concept Map Through Cooperative Learning Think Pair Share On The Learning Outcomes On Eleventh Grade Science Students Of Sman 1 Dua Koto Pasaman Maiyesi Yenti; Indang Dewata; Mawardi Mawardi
International Journal of Educational Dynamics Vol 2 No 1 (2019): International Jurnal of Educational Dynamics (IJEDs)
Publisher : Postgraduate School, Universitas Negeri Padang

The research aims to study the effect of using concept map through cooperative learning Think Pair Share (TPS) on th learning outcomes on eleventh grade science students of SMAN 1 Dua Koto Pasaman in terms of students’ initial knowledge. This was a quasy experiment. Sample are choose using cluster random sampling techniques. Data are analyzed using t-test. Based on the average value of student learning outcomes in the experiment group, 75% or 27 students have reached the minimum completeness criteria. The calculation of the hypothesis tcount (3.042) > ttable (1.995), it is means Ho rejected and H1 is received. It can be concluded that the learning outcomes of students taught using concept map through cooperative learning TPS signicantly different from learning outcomes of students taught with concept maps through conventional learning. The conclusion of this study are there is an effect of the use of concept map in cooperative learning Think Pair Share (TPS) on the learning outcomes on eleventh grade science student in SMAN 1 Dua Koto Pasaman.

Review of Urbanization Models and its Implication to Reduce Urban Poverty Teguh Widodo; Indang Dewata
Sumatra Journal of Disaster, Geography and Geography Education Vol 4 No 2 (2020): Sumatra Journal of Disaster, Geography and Geography Education ( Desember Edition
Publisher : Sumatra Journal of Disaster, Geography and Geography Education

Urbanization in nature has two meanings. Firstly, it means migrating people from rural to urban. Second, it means transforming rural area to urban area. Those meanings have two implications for the population as well. The people who migrate from rural to the urban area tend to make the change voluntarily. They want to change their life better than when they lived in rural. On the other hand, the villagers forced by the situation being too urban tend to be apathetic and they are very difficult to adapt and to change so that they are finally forced to change. This paper aims to explain how urbanization happened in Indonesia and its implication on urban poverty. This study depends on investigating literature and media review. We argue that voluntarily urbanization may lead to the new formation of the urban periphery. This will bring economic and social consequences such as land acquisition, job opportunity and urban poverty. Further, the study indicated that under voluntary urbanization, social and economic pressure were more likely to attach to the indigenous community compared to forced urbanization. The study showed that programs on poverty alleviation need to consider the nature of urbanization. Finally, this paper suggests conducting an empirical study related to urban poverty caused by two types of urbanization.

Penentuan Limbah Mikroplastik Polyethylene Terephthalate (PET) dengan Metoda Glikolisis dalam Air Laut di Kota Padang Kasma Warni; Indang Dewata
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Polyethylene Terephthalate (PET) is a type of plastic waste commonly found in the sea especially disposable soft drink bottles. PET plastic waste can decompose into harmful microplastics if swallowed by marine life. This study aims to determine the microplastic content of PET type in seawater in the city of Padang by glycolysis method using ethylene glycol (EG) solvent with a sodium carbonate as catalyst (Na2CO3) for depolymerization of PET to be a monomer of bis (2-hydroxyethyl terephthalate) (BHET). Glycolysis is carried out for 1 hour at 1960C. In this study, the variation of sodium carbonate (Na2CO3) catalyst mass used are 0.02 gram, 0.04 gram, 0.06 gram, 0.08 gram, and 0.1 gram) and variation of ratio PET bottles: ethylene glycol (gram: mL) are 10 : 20, 10:30, 10:40 and 10:50. The result obtained is 72.22% BHET product under optimum condition with amount of EG of 30 mL and Na2CO3 catalyst mass of 0.06 grams. The BHET was identified using FTIR to confirm the OH-, C-O, and C = O groups. Seawater samples are taken from three locations namely Padang beach, Tabing beach and Gajah Padang beac. The result shows absence of PET type microplastic in these samples.

Penentuan Kondisi Optimum Penyerapan Anion Kromat Pada Silika Termodifikasi Dimetilamina Vivi Chaniasi; Budhi Oktavia; Indang Dewata; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Heavy metal is the most dangerous was for the ecosystem because is not biodegradable, toxic, and carcinogenic even in a low concentration (ppm). It usually experienced some conditions such as not dissolved, precipitated, fused, absorbed, anorganic, reducer, oxidize, and free metal. One of the heavy metals that can cause negative effects for human and other living creature is Kromium Ion. The waste of the usage of Krom can damage the environment. Krom is a heavy metal that has dangerous affects that we have to be aware of. Krom (VI) on water was found 2 form od specieses, as an anion (Cr2O7)2- (In Acid solution) and anion (CrO4)2- (In Alkaline solution). One of the ways how to overcome Krom in a waste is by absorb it with an adsorbent, modified Silica DMA. It characterized with an electron microscope scanning, infrared spectrum, K2CrO4 adsorption from liquid solution which investigated in some pH level, contact time, K2CrO4 first concentration. The result of the experiment shows that modifying silica with DMA increases the adsorption capacity for Kromat. Langmuir Isotherm Adsorption resulting regression coefficient on Silica R2=0,8488, and for the modified Silica R2=0,9054. Kromat maximum adsorption capacity on 1,255 mg/g Silica and 2,26 mg/g modified Silica with first concentration of K2CrO4 100 mg/L can be reach on pH 2 with 90 minutes mixing process.

Optimization of Amount of Ethylene Glycol and Reflux Temperature in Glycolysis of The Waste Polyethylene Polythene Terephthalate (PET) on Jerbung Shrimp in Padang City Atikah Muthmainnah; Indang Dewata
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 2 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v9i2.108737

Polyethylene Terephthalate (PET) is one of the most widely used plastics, especially in packaging. The many uses of PET along with the increasing amount of PET waste that has negative impact on the environment because PET is a plastic that can only be used for one time use and cannot be decomposed naturally. Therefore, it is necessary to recycle PET by depolymerizing by glycolysis into bis (2-hydroxyethyl terephthalate) BHET. In this research, glycolysis was using EG variations of 20, 30, 40, and 50 mL and temperature variations of 166, 176, 186, and 196 oC. The results obtained 83.425% BHET yield under optimum conditions of EG as much as 30 mL and temperature of 196 oC. The results was characterized by Fourier Transform Infra Red type perkin elmer universal ATL Sampling Accessors 735 B at wave numbers 600 - 4000 cm-1 to determine the functional groups that make up the BHET.

Studi Co-Precipitation Tembaga (II) Menggunakan Coprecipitant Al(OH)3 pada Sungai Batang Arau Kota Padang Diukur dengan Metoda Spektrofotometri Serapan Atom (SSA) Yusuf .; Indang Dewata; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013)
Publisher : Departemen Kimia FMIPA UNP

A study in the development co-precipitation method and natural samples was applied to the Batang Arau River in Padang City. Sampling was done once in the month of November 2012, by random sampling on the selected point along the river which was considered to represent the river. Sampling points taken in the river upstream Lubuk Paraku Kor were named sample 1, the sampling points in the middle of the river called hilalang padang besi were called as sample 2, the third sampling points downstream to the mouth of the river were called the sample stream 3. The analysis was performed with the optimization of pH and volume optimization before it was applied to the sample. The result was the determination of the optimum pH conditions co-precipitant Al(OH)3 with atomic absorption spectroscopy air acetylene flame occurred at pH 6, the optimum volume coprecipitant used in the co-precipitation method was the addition of Al(OH)3 as much as 11 mL. Content of Copper (II) obtained at the optimum conditions at upstream was 2,22ppm, in the middle of the river was 1,294 ppm and 1,2 ppm was the content at the river mouth, with an average concentration factor of 104 times compared to direct measurement without the co-precipitation. Quality Standards based on PP. 82 Year 2001 Class II was still in the limited threshold 0,02 ppm.

Studi Kopresipitasi Zn2+ Menggunakan Al(OH)3 sebagai Kopresipitan Yollafebrisa Wizul; Indang Dewata; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Research of study copresipitation Zn2+ using Al(OH)3 as coprecipitant has been done. This study aims to determine the optimum conditions for coprecipitation of Zn2+ by Al(OH)3, and influence of foreign ions. This study uses variation pH about 5,0 – 10,0; variation of eluent volume about 8,0 – 14,0; variation of concentrated HNO3 volume about 1,0 – 5,0; and variation of concentration Cu2+ about 0,8; 1,2; 1,6; 2,0 and 2,4. Measurement concentration of Zn2+ using Atomic Absorption Spectroscopy (AAS) with wavelength of 213,9 nm. The result showed the optimum conditions occur at pH about 8, 12 mL of eluent and 1 mL of concentrated HNO3 with the absorption capacity of 0,074 mg/g. Meanwhile, the presence of foreign ions such as Cu2+ has influenced the coprecipitated Zn where concentration of the coprecipitated Zn decreased with increasing the concentration of foreign ions.

Efek Crosslinker terhadap Performa Komposit Selulosa Bakteri – Ekstrak Daun Kembang Sepatu ( Hibiscus rosa- Sinensis L ) Egidia Mayendra; Minda Azhar; Indang Dewata; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Abstract — Bacterial cellulose can be applied in various fields such as biomedical fields, separation membranes, artificial blood vessels, and substrates for tissue engineering cartilage. Bacterial cellulose still has low mechanical properties, so a bacterial cellulose composite with hibiscus leaf extract (KSB-EDKS) is formed to obtain new, better materials. The purpose of this study was to determine the effect of adding starch as a crosslinker, on the mechanical, physical, and structural properties of KSB-EDKS. Bacterial cellulose is produced from a mixture of coconut water, sugar and urea. Then fermented with acetobacter xylinum for 14 days. Bacterial cellulose formed in composites with hibiscus leaves is called bacterial cellulose extract of hibiscus leaves (KSB-EDKS). KSB-EDKS will be characterized by testing tensile strength, moisture content, structural analysis using FTIR and determining the degree of crystallinity using XRD. The addition of a crosslinker can reduce the percentage of KSB-EDKS water content. The best tensile strength test results were KSB-EDKS added with 3% tapioca flour solution with a value of 38.3 MPa, the FTIR spectrum showed that the functional groups in cellulose had just shifted in the range of the same wave number values and for the degree of crystallinity the addition of starch as crosslinker can reduce the degree of crystallinity in KSB-EDKS. Keywords — Bacterial cellulose, Composite, Crosslinker, Hibiscus leaves

Analisa Kualitas Air Sungai Batang Idas Kecamatan Lubuk Kilangan Indarung Padang pada Bulan Desember 2011 dan Maret 2012 Melisa Sri Hardianti; Indang Dewata; Hardeli Hardeli
Jurnal Periodic Jurusan Kimia UNP Vol 1, No 2 (2012)
Publisher : Departemen Kimia FMIPA UNP

Has done research about determination water quality in Batang Idas River at December 2011 to Maret 2012 with purpose to knows degree of water pollution with doing analisys of temperature, DHL, TSS, TDS, pH, DO, BOD, COD, an analisys consentration of Fe, Ca, and Al metal in water and sediment. The next preposition with rule government number of 82, 2001th and it evaluated. Result of experiment look that weather sampling time can influence the result. I got some parameter concentration from low value to high value are temperature is 22-300C, pH is 6.1-8.6, DHL is 0.078-0.201 mS/cm, TSS is 108-6149 mg/l, TDS is 39-130.78 mg/l, DO is 7.39-12.73 mg/l, BOD is 0.65-2.17 mg/l, COD is 1.71-74.31 mg/l, Fe metal is 0.3-119.6 ppm, Ca metal is 9.34-5371 ppm, Al metal is 5.2-7.26 ppm, and total concentration metal in sedimentis 0.019-46.61 %. The average concentration of some parameter exist under limit certainty rule government number of 82, 2001th except to COD in area 2, 3 and TSS in area 2, 3 and 4. Concentration of metal past over limit RMC (Recommendation Maximun Concentration for Water Irrigation). The conclusion that even increase concentration some parameter in mine area and followed increase concentration some parameter in Batang Idas River and in sail down than to rise. The reason is waste from mine limestone area, activity of human, and erosion of land.

ANALISIS FORMALIN DALAM SAMPEL IKAN TONGKOL MENGGUNAKAN FLUORAL-P SEBAGAI PENGOMPLEKS SECARA SPEKTROFOTOMETRI UV-VIS Juli Manda Sari; Indang Dewata; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 5, No 2 (2016)
Publisher : Departemen Kimia FMIPA UNP

Had been observed the research on the analysis of formaldehyde in samples of mackarel tuna using fluoral-p as complexing UV-Vis spectrophotometry. This study aims to obtain optimum conditions and validation of analytical methods and analyze the levels of formaldehyde in the mackarel tuna using fluoral-p as a complexing agent. The method used in this research that UV-Vis spectrophotometry, where formaldehyde is reacted with fluoral-p form compounds 3,5-diacetyl-1,4-dihidrolutidin (DDL) yellow and measured at a wavelength of 412 nm using a UV-Vis spectrophotometer. Phase optimization done of the effect of pH, complexing time and stability of the complex. While the validation phase methods of analysis undertaken include the manufacture calibration curve and linearity, LOD and LOQ, precision test and test accuracy. The results showed that the complex solution of formalin and fluoral-p optimum at pH 4 with a complexing for 75 minutes. Validation of the methods result in the regression equation Y = 0.022x + 0.013 with a correlation coefficient (r) = 0.0989, LOD value of 0.2 ppm and 0.6 ppm LOQ values, and average% recovery was 101.7%. Formaldehyde levels were obtained in samples mackarel tuna originating from the Pasar Lubuk Buaya and SPAR Supermarkets identified containing formaldehyde levels exceed a safe threshold is 6 ppm and 20 ppm.

Co-Authors Abdul Razak Abdul Razak Abdul Razak Afriyani, Ratih Agung Prayitno Ahmad Fasni Ahmad Fauzan Ahmad Juanda Al Asyary Aldri Frinaldi Alfitri Alfitri Ali Amran Alizar, Alizar Alwi Nofriandi Alya Fariani Amini, Aisyah Anaka, Dego Taftazani Ananda Putra Ananda Putra Andromeda Andromeda Annisa, Ananda Suci Aprizon Putra Arif Rahman Hakim Arif Setiawan Arif Setiawan Arman A Atikah Muthmainnah Aturrahmah, Muthi Aulia Azhar Away, Romy Dwipa Yamesa Ayu Azizah Azzahra, Nabila bahari, puja rizki Baqi, Ahmad Iqbal Berliana Salsabila Budhi Oktavia Budhi Oktavia Budhi Oktavia Catri, Indra Christina Lydia Makmur Damanhuri, Harfiandri Dasman Lanin Dedi Agustanto Dedi Hermon Deliani, Nur Farida Delvina, Mery Derjulita, Defika Desy Kurniawati Dewi Fortuna Khairil Dewi Rahmadani Siregar Dian Adhetya Arif dian rizky afriani Dinda Tri Pangesti Dipnorita Retno Dolla Mulyana Harnas Donny Fernandez Dwi Marsiska Driptufany Dwi Putri, Vika Trisna Eddy Suratman Edi Nasra Edwin Musdi Egidia Mayendra Eka Putri, Elinda Eka Sovia Elfandra Fadhli Rabbi Elinda Fithriana Elsa Yuniarti Elvinda, Reza Emra, Auliana Endrizal Endrizal Eni Kamal Eni Kamal Eri arlian Eri Barlian Eri Berlian Erianjoni Erianjoni Exposto, Levi Anatolia S.M. Fadila Gusman Fajriah Azra Fajrin Fajrin Fatma, Winda Faulina Fatmawati Fatmawati Fatmawati, Rani Febrina, Suci Febryanti Febryanti Festiyed Fijri, Annisa Nurul Fitra Arya Dwi Nugraha Fitri Sadilla Fitri, Marisa Meliana Fitriandoni, Adisty Fitrya Monica Frinsis Warmansyah Fuji Astuti Febria Geita Yulyan Firel Gustia Dona Maya Handayuni, Linda Hardeli Hardeli Hardeli Hardeli Hardeli Hardeli Hardeli Hardeli Hari Asri, Hazqan Harika Harika Harmedi Yulian Saputra Hary Sanjaya Hary Sanjaya Hary Sanjaya Hary Sanjaya Haryeni Hayati, Neni Fitra Heldi heldi heldi Heldi Heldi, Heldi Henny Yulius Henny Yulius Herfien Hidayat S, Syaiful Hurriyah Hurriyah I Made Arnawa Ikhsani, Anugrah Putri Indra Catri Insani, Munadia Isva Abdul Ghani Iswandi - Umar Iswandi U Jamika, Fadel Ikrar Jelibseda Jelibseda, Jelibseda Jon Efendi Juli Manda Sari Kasma Warni Kristianto, Aloysius Hari Kurniati Kurniati Kusnanda, Arif Juliari Latisma Dj Lindawati Lindawati Lismomon Nata Mahalul Azam Maharani, Indah Kemala Mainita, Yosi Putri Maiyesi Yenti Maruf, Hidayatul Masrid Pikoli Mawardi Mawardi Mawardi Mawardi Meilindri, Rahmi Aulia Melisa Sri Hardianti Meria Ultra Gusteti Meuraksa, Irawati Miftahul Khair Minda Azhar Minda Azhar Minda Azhar Minda Azhar Mira Hasti Hasmira Mona Gusfira Monica, Fitrya Monika Yulia Muchtar, Bustari Muhamad Sholichin Muhammad Fajri Muhammad Farhan Muhammad Habibul Ikhsan Muhammad Hidayat Muhammad Hiknul Ikhsan Muhayatul, Muhayatul Mulia, Melindra Mulya Gusman Munadia Insani Mutia Amran Nasution, Rani Sakila Nasyfrizal Carlo Niza Lian Pernadi Nizar, Umar Kalmar Nizwardi Azka Nofri Yuhelman Nofrianto Nofrianto Nur Azizah Nur Efendi NUR EFENDI Nurhasan Syah Nurlaeli Rachmawati Koerniawan, Rina NURUL HIDAYAH Oktavia, Elfitri Olivia Oktorie Onasis, Aidil Osronita Osronita Perdani, Agung Sandi Pernadi, Niza Lian Pramesta, Deasycha Novelidia Pudia M. Indika Purnama Wirawan Purnama Wirawan Putri Ayu Rahadian Zainul Rahayu, Youngky Gerre Rahmadani Siregar, Dewi Rahman Rahman Rahmatika, Aljumaatul Rahmi Hidayanti Rahmi, Fathaniah Raviqa Rammadani Yusran Rapitos Sidiq Rasli, Amran Md. Rembrandit Rembrandt, Rembrandt Riri Rahmahwati Joni Rismiati Rismiati Robet Triarjunet Romy Dwipa Yamesa Away Rustian, Zikra Putri Ryanda Luthfi Zaim Sabrina, Joya Sadilla, Fitri Safitri, Aprilliana Sakdimah Sakdimah Sandi Perdani, Agung Sandrawati, Neny Sari, Trisna Kumala Sati’at, Nur Anisa Semeidi Husrin Septya Anggraini Serly Mutia Sari Sherly Kasuma Warda Ningsih Sinaga, Barita Siregar, Dewi Rahmadani Siti Fatimah Siti Fatimah Skunda Diliarosta Skunda Diliarosta Sri Benti Etika Suci Atma Hardika Suci Firma Dewi Sugeng Riyanto Sugriarta, Evino Suhendrinal Suparno . Surya Eka Putra Suryani, Okta Suryelita . Susi Erienti Syafardi, Zulhendra Syafarman Syafri Anwar Syafrijon Syah, Nur Hasan Syamsi Aini Syamsul Amar B Syukria Teguh Widodo Trisna Kumala Sari Try Al Tanto Ulianas, Alizar Ulya Amanda Zeds, Dhea Umar Kalmar Nizar Umar Kalmar Nizar Umar Kalmar Nizar Umar, Genius Umar, Iswandi Vina Novela vira maryati Vivi Chaniasi Wahyu Prasetyo Agus Susanto Wilson Novarino Yani, Akhmad Yerimadesi Yerimadesi Yohandri Yollafebrisa Wizul Yollafebrisa Wizul Yudi Antomi Yuliana Yuliana Yulkifli Yulkifli Yunhendri Danhas Yusuf . Zul Amri Zuldani, Irwan

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