Garuda - Garba Rujukan Digital

p-Index From 2020 - 2025

14.952

P-Index

This Author published in this journals

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

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary Other

Published : 125 Documents Claim Missing Document

Claim Missing Document

Articles

6 7 8 9 10

Water Quality Analysis in the Batang Ombilin River, Sawahlunto City Fitrya Monica; Iswandi Umar; Indang Dewata; Eri Barlian
Jurnal Penelitian Pendidikan IPA Vol 9 No SpecialIssue (2023): UNRAM journals and research based on science education, science applic
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9iSpecialIssue.6371

The decline in water quality is caused by pollution pressure due to low environmental sanitation efforts. Water quality can be determined by carrying out certain tests on the water. This research was conducted on the Batang Ombilin River, Sawahlunto City. This research was conducted in October 2022. This research used survey methods and laboratory test methods. Activities carried out using the survey method are in the form of interviews related to research. Next, laboratory test methods are used to analyze water quality. Interview activities were carried out with people living around the Batang Ombilin River. Respondents were determined using random sampling. Samples were taken of 2 liters of water and carried using plastic bottles. The parameters used to see water quality are TDS, TSS, pH, DO, BOD and COD. Based on research that has been carried out, the results show that 65.25% of respondents stated that the existing water is suitable for consumption but must be filtered and purified first before cooking. Meanwhile, 30.75% of respondents stated that it was not suitable for consumption because the water was cloudy, dirty and smelly. Furthermore, in the water quality analysis, the average value of the TDS parameter was obtained with an average value of 108. TSS obtained an average value of 29.1. The pH got an average value of 8.1. DO got an average score of 7.3. BOD got an average score of 1.4 and COD got an average score of 15.2. From the results of tests carried out at 3 different points, an average value was obtained below the established class 2 water quality standards

Physical, Chemical, and Biological Pollution in Water, Air and Soil Industrial Products From PT. Torabika Eka Universe in Cikupa Tangerang Mona Gusfira; Fatmawati Fatmawati; Dedi Agustanto; Lismomon Nata; Frinsis Warmansyah; Eri Barlian; Indang Dewata; Iswandi Umar; Nurhasan Syah; Siti Fatimah; Indra Catri
Science and Environmental Journal for Postgraduate Vol 5 No 2 (2023): Science and Environmental Journals for Postgraduate (SENJOp)
Publisher : Postgraduate School, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/senjop.v5i2.199

Technological developments certainly provide big changes in human life, starting from infrastructure management to the food industry, and the drug industry, everything is very easy to do by utilizing current technological sophistication. Many bad impacts arise from these technological advances, the most prominent of which is pollution due to waste generated from the industry. The impact that occurs from failure in waste treatment is the occurrence of air, soil, and water pollution. This research method is a qualitative descriptive research, where the researcher directly becomes the instrument and the company is the respondent. Based on research results Pollution of water, air, and soil due to the industrial products of PT. Torabika Eka Semesta found that Torabika is a well-known coffee drink brand in Indonesia. To maintain a healthy environment, the Torabika company can do several things, including 1) Companies reduce their use of single-use plastic packaging; 2) Use environmentally friendly raw materials; 3) Optimizing energy use; 4) Improve recycling programs; 5) Build environmental awareness among employees and customers; 6) Improve recycling programs; 7) Build environmental awareness among employees and customers; 8) Improve recycling programs; and 9) Build environmental awareness among employees and customers.

Reverse Osmosis (RO) Drinking Water Management as the Best Solution to Overcome the Clean Water Crisis in Pinang Island Dewi Fortuna Khairil; Munadia Insani; Arif Setiawan; Febryanti Febryanti; Elfandra Fadhli Rabbi; Eri Barlian; Indang Dewata; Nurhasan Syah; Heldi Heldi; Iswandi Umar; Eni Kamal
Science and Environmental Journal for Postgraduate Vol 6 No 1 (2023): Science and Environmental Journals for Postgraduate (SENJOp)
Publisher : Postgraduate School, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/senjop.v6i1.212

Reverse Osmosis (RO) drinking water management can be the best solution to overcome the clean water crisis in Pulau Pinang. RO is a process that allows water to pass through a semi-permeable membrane and separates most of the dissolved salts, organic matter, bacteria, and other substances from the water to produce clean water. The use of the RO method in drinking water management is one of the best alternatives to overcome the clean water crisis, especially in the Pinang Island area with surface water sources that are not dominated by freshwater can ensure the availability of sustainable clean water. However, RO-based drinking water management is water demineralization, so further management is needed such as remineralization to meet mineral standards in drinking water.

Optimasi Konsentrasi Hidrogen Peroksida (H2O2) Metode Wet Peroxide Oxidation untuk Identifikasi Mikroplastik Polyethylene Terephthalate (PET) Eka Putri, Elinda; Dewata, Indang
Jurnal Pendidikan Tambusai Vol. 7 No. 3 (2023): Desember 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v7i3.10535

Mikroplastik didefenisikan sebagai partikel plastik berukuran kurang dari 5 mm. Mikroplastik terbentuk dari degradasi plastik yang lebih besar dan plastik yang sengaja dibuat berukuran kecil oleh industri plastik. Jenis polimer Polyethylene Terephthalate (PET) merupakan polimer yang paling umum ditemukan di lingkungan perairan karena penggunaanya yang luas dan memiliki sifat-sifat khusus. Penelitian ini bertujuan untuk meningkatkan efisiensi metode WPO untuk mikroplastik PET dengan memvariasikan konsentrasi H2O2 (20%, 25%, 30%, 35%, dan 40%). Mikroplastik diidentifikasi menggunakan instrument Fourier Transform Infra Red (FTIR) dan X-Ray Fluorescence (XRF). Pada hasil penelitian diperoleh kondisi optimum pada konsentrasi H2O2 35% dengan massa mikroplastik 0,1594 gram. Hasil identifikasi menggunakan FTIR menunjukkan adanya puncak C=O ester, C-O ester dan C-H aromatik yang sesuai dengan spektrum referensi mikroplastik PET yang membuktikan proses WPO tidak merusak mikroplastik. Hasil identifikasi XRF menunjukkan bahwa unsur penyusun mikroplastik PET adalah Al, Si, P, Cl, K, Ca, Ti, Fe, Zn, dan Ag.

Permasalahan Sampah di Kota Padang: Tinjauan Terhadap Perilaku Pembuangan Sampah, Fungsi LPS, dan Upaya Penanganan oleh DLH Prayitno, Agung; Umar, Iswandi; Dewata, Indang
Jurnal Kependudukan dan Pembangunan Lingkungan Vol 3 No 3 (2022): Jurnal Kependudukan dan Pembangunan Lingkungan (JKPL)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jkpl.v3i3.22

Kota Padang menghadapi tantangan serius terkait manajemen sampah yang dipicu oleh perilaku membuang sampah sembarangan, terutama ke pinggiran sungai dan pinggir jalan. Dalam upaya penanganan, Dinas Lingkungan Hidup (DLH) Kota Padang telah melakukan langkah-langkah seperti mendirikan posko pemantauan dan pengawasan K3 serta memberikan sosialisasi terkait waktu pembuangan sampah yang diatur dalam Peraturan Walikota (Perwako). Selain itu, sanksi administratif dan pidana diberlakukan bagi pelanggar. Meskipun DLH juga melaksanakan program pengurangan sampah dengan pendekatan reduksi dari sumbernya melalui pembinaan bank sampah, tingkat pengelolaan sampah masih belum optimal karena masih banyaknya sampah yang dibuang secara ilegal atau dibakar sendiri oleh penduduk. Pertumbuhan penduduk yang cepat di Kota Padang juga menjadi faktor yang memperparah masalah lingkungan, termasuk masalah sampah, sehingga diperlukan sinergi antara pemerintah, masyarakat, dan pihak terkait lainnya untuk mencapai pengelolaan sampah yang lebih baik dan berkelanjutan.

Pemanfaatan Pati Biji Durian (Durio zibenthinus murr) Menjadi Edible Film Menggunakan Plastisizer Polietilen Glikol (PEG) Fijri, Annisa Nurul; Dewata, Indang
Jurnal Kependudukan dan Pembangunan Lingkungan Vol 3 No 1 (2022): Jurnal Kependudukan dan Pembangunan Lingkungan (JKPL)
Publisher : Universitas Negeri Padang

The edible film is a bioplastic in the form of a thin layer that can be decomposed with the help of microorganisms. This study aims to determine the effect of adding chitosan to the edible film of durian seed starch on the mechanical properties and structure of the edible film. This research was conducted by varying the concentration of chitosan at concentrations of 0%, 0.5%, 1%, 1.5%, and 2%. The resulting edible films were analyzed for tensile strength, elasticity, and characterization using Thermogravimetric Analysis (TGA). The optimum tensile strength obtained with the addition of 1% chitosan is 1.414 Mpa. The maximum elasticity value obtained in the edible film with the addition of 1% chitosan is 436.2 Mpa. The thermal resistance of the film will be higher as the tensile strength increases. The film begins to decompose at 250 ºC and ends at 500 ºC.

Pengaruh Penambahan Karagenan Terhadap Ketebalan, Kuat Tarik dan Biodegradasi Edible Film dari Pati Biji Alpukat Aturrahmah, Muthi; Dewata, Indang
Jurnal Kependudukan dan Pembangunan Lingkungan Vol 3 No 1 (2022): Jurnal Kependudukan dan Pembangunan Lingkungan (JKPL)
Publisher : Universitas Negeri Padang

Edible film adalah plastik tipis yang memiliki ketebalan kurang dari 0,25 mm yang digunakan untuk melindungi produk makanan. Pada penelitian ini dilakukan pembuatan edible film dari pati biji alpukat (Persea americana mill), dengan plasticizer polietilen glikol dan penambahan karagenan. Tujuan penelitian ini adalah untuk menentukan pengaruh penambahan karagenan terhadap ketebalan, kuat tarik serta biodegradasi edible film. Variasi karagenan yang ditambahkan adalah 0%; 0,5%; 1%; 1,5%; dan 2%. Dari penelitian yang dilakukan diketahui bahwa penambahan karagenan berpengaruh pada ketebalan, kuat tarik dan biodegradasi edible film. Nilai ketebalan edible film meningkat seiring bertambahnya konsentrasi karagenan yaitu 0,066 mm; 0,095 mm; 0,114 mm; 0,131 mm; dan 0,174 mm. Nilai kuat tarik edible film maksimum didapatkan pada penambahan karagenan 1% yaitu 0,881 Mpa. Dan untuk biodegradasi semakin tinggi konsentrasi karagenan maka semakin kecil persen kehilangan edible film dan semakin lama waktu penguburan edible film maka semakin tinggi persen kehilangan edible film.

Pengaruh Penambahan Variasi Karagenan Terhadap Sifat Mekanik Edible film dari Pati Bengkuang (Pachyrhizus Erosus) Anaka, Dego Taftazani; Dewata, Indang
Jurnal Kependudukan dan Pembangunan Lingkungan Vol 3 No 1 (2022): Jurnal Kependudukan dan Pembangunan Lingkungan (JKPL)
Publisher : Universitas Negeri Padang

Edible film is a thin plastik with a thickness of less than 0.25 mm which is often used to protect food products. This study aims to determine the effect of adding variations of carrageenan to the mechanical properties of edible film from yam starch. This research used polyethylene glycol (PEG) plastikizer and carrageenan variations (0.5%, 1%, 1.5% and 2%). The resulting edible film was analyzed for its mechanical properties. The higher the addition of carrageenan concentration, the thicker the edible film produced, and the maximum yield was obtained at the tensile strength of 2.92 Mpa and elasticity 7.02 Mpa at the addition of 1% carrageenan, the minimum elongation value of 0.41% at the addition of 1% and 1.5% carrageenan. The results of this study indicate that the addition of carrageenan variations affects the mechanical properties of the edible film.

Optimization of Chitosan Concentration in the Making of Edible Film From Corn (Zea Mays L.) Pramesta, Deasycha Novelidia; Dewata, Indang
Jurnal Kependudukan dan Pembangunan Lingkungan Vol 3 No 1 (2022): Jurnal Kependudukan dan Pembangunan Lingkungan (JKPL)
Publisher : Universitas Negeri Padang

Edible film is a thin plastic that has a thickness of less than 0.3 mm and is made from edible materials. This study aims to determine the effect of the concentration of chitosan in the manufacture of edible films, as well as to compare the physical and mechanical properties of edible films obtained with the standard values set by the Japanese Industrial Standard (JIS) Z1707. In this study, variations in the concentration of chitosan were carried out to obtain a good edible film, with a concentration variation of 0%; 0.5%; 1%; 1.5%; and 2%. The obtained edible films were analyzed for thickness, tensile strength and elasticity (Young's modulus). Based on the research conducted, it was found that along with the addition of chitosan, the thickness, tensile strength and elasticity values increased. Thickness values range from 0.07 to 0.09 mm. The value of tensile strength and elasticity value obtained the optimum value at 1% chitosan concentration with a tensile strength value of 9,655 Mpa and an elasticity value of 12.41 Mpa. The thickness, tensile strength and elasticity values obtained meet the standard values set by the Japanese Industrial Standard (JIS).

The Effect of Added Carrageenan on Tensile Strength and Biodegradation of Edible Film using Breadfruit Starch Maruf, Hidayatul; Dewata, Indang
Jurnal Kependudukan dan Pembangunan Lingkungan Vol 3 No 1 (2022): Jurnal Kependudukan dan Pembangunan Lingkungan (JKPL)
Publisher : Universitas Negeri Padang

Breadfruit has a fairly high starch content of 84.28%, the utilization of breadfruit itself is still not optimal. In Indonesia, breadfruit can thrive in one of the breadfruit-producing cities, namely the city of Padang. One of the uses of breadfruit is in the manufacture of edible films. Edible film is a thin plastic that has a size smaller than 0.3 mm which serves to protect food products. The purpose of this study was to determine the effect of carrageenan on the tensile strength and biodegradation of edible films from breadfruit starch. This study used the addition of carrageenan with variations in concentrations of 0%, 0.5%, 1%, 1.5%, and 2%. Edible film was tested for tensile strength and obtained values at 0% 2.046, 0.5% 4.252, 1% 7.678, 1.5% 4.139, 2% 3.829 where the optimum tensile strength value was at 1% with a tensile strength of 7.678 Mpa while the biodegradation had percent loss at least at a concentration of 2% with a percent loss yield of 11.5%. The higher the concentration used, the more difficult it is for the edible film to be degraded in the soil.

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

Title

Found 125 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 125 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 125 Documents
Search