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All Journal International Journal of Evaluation and Research in Education (IJERE) Buletin Udayana Mengabdi Prosiding Seminar Nasional MIPA Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Ilmiah Mandala Education (JIME) JISIP: Jurnal Ilmu Sosial dan Pendidikan Hydrogen: Jurnal Kependidikan Kimia JPIn : Jurnal Pendidik Indonesia Hydrogen: Jurnal Kependidikan Kimia Lumbung Inovasi: Jurnal Pengabdian Kepada Masyarakat MANDALIKA VETERINARY JOURNAL Lantera Widya
Yeti Kurniasih
Universitas Pendidikan Mandalika
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Physics Social Sciences Veterinary Other

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Pemberdayaan Masyarakat Melalui Pelatihan Pengolahan Sampah Plastik Menggunakan Portable Garbage Reducer-Energy Producers (Po Grep) Di Gunungsari Kabupaten Lombok Barat Dewi, Citra Ayu; Kurniasih, Yeti; Khery, Yusran
Lumbung Inovasi: Jurnal Pengabdian kepada Masyarakat Vol 4, No 1: May 2019
Publisher : Lembaga Penelitian dan Pemberdayaan Masyarakat (LITPAM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/linov.v4i1.439

Abstract

Target khusus yang ingin dicapai melalui kegiatan Program KKN-PPM  ini adalah: (a) meminimalisir limbah plastik yang sulit terurai khususnya di Gunungsari Kabupaten Lombok Barat, (b) meningkatkan efisiensi biaya pengelolaan sampah, (c) melakukan perbaikan pada sistem teknologi pengolahan sampah melalui pengolahan sampah plastik menggunakan Portable Garbage Reducer-Energy Producers (Po GREP), (d) meningkatkan partisipasi masyarakat agar lebih bersemangat dalam melakukan pengolahan sampah plastik menggunakan Portable Garbage Reducer-Energy Producers (Po GREP), (e) membangun kemitraan dan kerjasama yang efektif antara Perguruan Tinggi, Pemerintah Daerah dan masyarakat di Gunungsari Kabupaten Lombok Barat. Kegiatan KKN-PPM ini dilaksanakan selama 3 bulan pada semester genap tahun akademik 2019/2020. Adapun metode kegiatan KKN-PPM ini adalah metode workshop dalam bentuk pelatihan dan pendampingan. Berdasarkan hasil pelatihan yang telah dilakukan didapatkan tingkat pemahaman dan keterampilan masyarakat di Desa Gunungsari terkait pengolahan sampah plastik menjadi BBM masih kurang sehingga perlu adanya pendampingan dalam pengolahan sampah plastik menjadi BBM melalui PoGREP.Community Empowerment through Training on Plastic Waste Management Using Portable Garbage Reducer-Energy Producers (Po Grep) in Gunungsari, West Lombok RegencyAbstractSpecific targets to be achieved through the KKN-PPM Program activities are: (a) minimizing plastic waste that is difficult to decompose, especially in Gunungsari, West Lombok Regency, (b) increasing the efficiency of waste management costs, (c) making improvements to the waste processing technology system through processing plastic waste using Portable Garbage Reducer-Energy Producers (Po GREP), (d) increasing community participation to be more enthusiastic in processing plastic waste using Portable Garbage Reducer-Energy Producers (Po GREP), (e) building effective partnerships and cooperation between Universities, Local Government and the community in Gunungsari, West Lombok Regency. This KKN-PPM activity was carried out for 3 months in the even semester of the 2019/2020 academic year. The KKN-PPM activity method is a workshop method in the form of training and mentoring. Based on the results of the training that has been carried out, it is found that the level of understanding and skills of the people in Gunungsari Village regarding processing plastic waste into fuel is still lacking so there is a need for assistance in processing plastic waste into BBM through PoGREP.
The impact of Google Classroom to increase students’ information literacy Citra Ayu Dewi; Muhali Muhali; Yeti Kurniasih; Diah Lukitasari; Abdul Sakban
International Journal of Evaluation and Research in Education (IJERE) Vol 11, No 2: June 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijere.v11i2.22237

Abstract

Information literacy at the higher education level is very important because it tends to be problematic in fostering students' critical thinking skills, including awareness, collection, understanding, analysis, synthesis, and the use of information and their attitudes to the treatment of information at the university level. This study examined the effects of the online learning Google Classroom in enhancing information literacy among students. This study observed a one-group pretest-posttest experimental design. This research involved 65 students from the Chemistry Course under the Biochemistry Program. The instrument used to assess students’ information literacy consist of fair set of multiple-choice questions. The test was found to be very valid at 4.22% and highly reliable at an alpha level of 0.86. The findings of this research showed that the information literacy of students improved before and after their learning exposure using Google Classroom based on the descriptive and inferential statistics. Moreover, the students' attitude towards the online platform shows that they are more willing to learn using Google Classroom than the non-online or conventional learning platforms. Therefore, applying Google Classroom in online learning is effectively boost students’ information literacy.
Pemberdayaan Petani Jagung melalui Pengembangan Usaha Diversifikasi Produk Olahan Jagung di Labuapi Kabupaten Lombok Barat Yeti Kurniasih; Citra Ayu Dewi
Buletin Udayana Mengabdi Vol 18 No 3 (2019): Buletin Udayana Mengabdi
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (213.922 KB) | DOI: 10.24843/BUM.2019.v18.i03.p08

Abstract

Secara umum masalah dan kendala utama yang dihadapi Petani Jagung di daerah Labuapi adalah belum adanya upaya dan pengembangan yang baik dalam usaha diversifikasi produk olahan jagung yang berdaya jual tinggi dan bernilai ekonomis. Kondisi ini dikarenakan masyarakat petani daerah Labuapi belum mengenal teknologi pengolahan tersebut. Selain itu, minat masyarakat terhadap pangan berbasis jagung masih rendah. Hal ini disebabkan oleh kurangnya pengetahuan sebagian masyarakat tentang nilai gizi jagung, tampilan produk pangan dari jagung yang kurang menarik, dan adanya anggapan bahwa jagung hanya dikonsumsi oleh masyarakat berekonomi lemah. Kegiatan KKN-PPM yang telah dilakukan ini bertujuan untuk meningkatkan keanekaragaman produk olahan jagung melalui penerapan teknologi pengembangan diversifikasi produk olahan jagung yang murah dan mudah diaplikasikan oleh petani jagung. Kegiatan KKN-PPM telah dilakukan selama 3 bulan pada semester genap tahun akademik 2016. Adapun kegiatan yang telah dilakukan meliputi: pembekalan KKN-PPM pada mahasiswa, pelatihan dan pendampingan secara langsung pada petani jagung dalam menghasilkan produk berupa diversifikasi olahan jagung seperti susu jagung, mie jagung, dodol jagung dan tempe jagung. Berdasarkan hasil pelatihan yang telah dilakukan didapatkan tingkat pemahaman dan keterampilan masyarakat (petani jagung) di Desa telagawaru memuaskan, sedangkan kualitas produk olahan jagung yang dihasilkan berhasil baik atau maksimal. Kata Kunci: Diversifikasi, Produk Olahan Jagung.
PEMBUATAN KITOSAN DARI CANGKANG UDANG DAN APLIKASINYA SEBAGAI ADSORBEN UNTUK MENURUNKAN KADAR LOGAM CU Sry Agustina; Yeti Kurniasih
Prosiding Seminar Nasional MIPA 2013: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2013
Publisher : Prosiding Seminar Nasional MIPA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstrak Kitosan merupakan modifikasi dari senyawa kitin yang banyak terdapat dalam kulit luar hewan golongan rustaceae seperti udang, lobster dan kepiting. Salah satu sumber daya alam di bidang perikanan yang sangat melimpah adalah udang. Selama ini pemanfaatan cangkang udang hanya terbatas sebagai pakan ternak dan bahkan dibiarkan begitu saja sampai membusuk sehingga menggangu estetika lingkungan. Penelitian ini bertujuan untuk mengetahui seberapa besar rendemen serta kualitas kitin dan kitosan yang dihasilkan dari cangkang udang serta untuk mengetahui seberapa besar kapasitas adsorpsi kitosan dari cangkang udang sebagai adsorben untuk menurunkan kadar logam Cu. Tahap pembuatan kitosan meliputi: tahap demineralisasi dengan HCl 1,5M, tahap deproteinasi dengan NaOH 3,5% serta tahap deasetilasi dengan NaOH 60%. Selanjutnya kitosan yang diperoleh dikarakterisasi dan ditentukan kapasitas adsorpsinya terhadap ion logam Cu. Kadar Cu pada sampel sebelum dan sesudah diadsorpsi diukur dengan AAS (Atomic Absorption Spectroscopy). Dari hasil penelitian diperoleh karakterisasi kitosan sebagai berikut: rendemen 67,08%, memiliki tekstur serbuk bewarna putih, tidak berbau, memiliki kadar air 1,55% serta larut sempurna dalam asam asetat glasial 2%. Kitosan yang diperoleh dari hasil penelitian mampu mengadsorpsi logam Cu sampai konsentrasi 100 ppm dengan persen adsorpsi sebesar 90,37%.
Pengaruh Arus Listrik Terhadap Massa Tereduksi Perak Pada Pengendapan Perak Dengan Metode Elektrodeposisi Aldina Putriari; Yeti Kurniasih; Ahmadi Ahmadi
Jurnal Pendidik Indonesia (JPIn) Vol 5, No 1: April 2022
Publisher : Yayasan Pendidikan Intan Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47165/jpin.v5i1.260

Abstract

Logam perak merupakan logam berat yang beracun bila masuk ke tubuh makhluk hidup. Sumber pencemaran logam perak salah satunya berasal dari limbah fixer hasil dari proses fotografi. Diperlukan metode untuk mengambil logam perak tersebut sehingga tidak mencemari lingkungan serta dapat dimanfaatkan kembali secara ekonomis. Salah satu metode yang dapat dilakukan adalah metode elektrodeposisi. Proses elektrodeposisi menggunakan prinsip sistem elektrolisis yaitu menggunakan larutan elektrolit sebagai tempat terjadinya proses perpindahan ion. Penelitian ini bertujuan untuk mengetahui pengaruh arus listrik terhadap massa tereduksi perak pada pengendapan perak dengan metode elektrodeposisi. Berdasarkan hasil penelitian diperoleh arus listrik optimum pada arus 0,04A, dimana dihasilkan massa tereduksi Ag sebesar 41,86% dari penimbangan massa katoda dan 15,33% dari penurunan konsentrasi Ag pada larutan dengan AAS. Aplikasi dari kondisi optimum ini pada limbah foto rontgen diperoleh persen massa tereduksi Ag rata-rata sebesar 17,65% dari penimbangan massa katoda dan sebesar 14,72% dari penurunan konsentrasi Ag pada larutan dengan AAS.
EFISIENSI ISOLASI MINYAK ATSIRI DARI KULIT JERUK DENGAN METODE DESTILASI AIR-UAP DITINJAU DARI PERBANDINGAN BAHAN BAKU DAN PELARUT YANG DIGUNAKAN Suci Cahyati; Yeti Kurniasih; Yusran Khery
Hydrogen: Jurnal Kependidikan Kimia Vol 4, No 2 (2016): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (498.846 KB) | DOI: 10.33394/hjkk.v4i2.97

Abstract

Citrus nobilis L. peel was used as a source of essential oil production through water-stem distillation method. The aim of this research was to compare yield and quality of essential oil from Citrus nobilis L. peel obtained from ratio of 0,2; 0,4 and 0,6 of raw material mass and solvent volume during water-stem distillation. In each run, 1000 mL of water was applied as solvent, and the distillation was performed for 6 hours.. Results show that the best yield and quality of the produced essential oil was obtained on 400 gram/1000 mL ratio. This ratio produced essential oil in a yield of 2.18 %, 0.8484 gram/ mL density, yellowish oil with orange typical aroma, and viscous. GC-MS analysis results of the oil show the composition of Limonene 56,96%, α-Pinene 3,86%, β-Phellandrene 1,02%, β-Pinene 2,40%, β-Myrcene 2,76%, Linalool 7,69%, 3-Cyclohexene-1-methanol 2,04%, Nerol 1,44% and Benzenedicarboxylic acid 14,50%. 
Pemisahan Perak dari Limbah Fotorontgen dengan Teknik Membran Cair Berpendukung Menggunakan Pengemban Gabungan TBP dan D2EHPA Yeti Kurniasih; Ahmadi Ahmadi; Baiq Asma Nufida
Hydrogen: Jurnal Kependidikan Kimia Vol 8, No 1 (2020): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (194.126 KB) | DOI: 10.33394/hjkk.v8i1.2582

Abstract

The photorontgen process produces waste that is harmful to the environment because it contains silver ions that are toxic to living organisms. The silver content in photorontgent waste is 2000 mg / L, while the permissible threshold value for silver in aquatic is 0.1 - 1.0 mg / L, so the disposal of photorontgent waste into the waters will be dangerous. However, silver metal has high economic value so that silver metal separation from x-ray waste is required, in addition to reducing the environmental burden due to silver metal pollution, it is also expected to reuse the silver metal economically. The technique of separation that can be used is a supported liquid membrane (Supported Liquid Membrane, SLM). This technique has the advantage that its separation process is relatively easy because the extraction and stripping process takes place in one stage, the carrying solution as extractant is more stable in the supporting membrane and the amount of extractant required is small. This research studies the effect of waste dilution factors on the effieciency separation of silver from photorontgen waste. Separation was carried out at the optimum SLM condition by using combined carrier compound TBP and D2EHPA with a ratio of 0.25: 0.75, total concentration of 1 M in kerosene and 0.1 M HNO3 as stripping phase. Sample waste was diluted by a factor dilution 25, 50, 75 and 100 times. Measurement of metal content before and after separation is done with AAS. The results showed that the waste dilution factor influenced the efficiency of silver trasnpor through SLM. Percent of silver separation was obtained 21.33% in waste with 100 times dilution.
Pengaruh Ukuran Serbuk Pada Aktivasi Tanah Liat Dari Tanak Awu Terhadap Daya Adsorpsinya Pada Pemurnian Minyak Goreng Bekas Baiq Asma Nufida; Nova Kurnia; Yeti Kurniasih
Hydrogen: Jurnal Kependidikan Kimia Vol 2, No 2 (2014): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (323.201 KB) | DOI: 10.33394/hjkk.v2i2.660

Abstract

This research was aimed to get the effect of particel size of activated natural clay from Tanak Awu to their adsorption capacity for increase reused cooking oil quality. At previous research we done the activation of natural clay using acid (HCl) and got an optimal concentration of acid at 1 molar. Natural clay was grinding until particel size at 50 mesh, 60 mesh and 100 mesh then it was characterized in specific surface area by methylen blue methods and also acidity surface by acid base titration. Then activated natural clay was applied for purifying reused cooking oil by analyzing water content, acid number and peroxide number. The result showed that there are the effect of particel size of natural clay to acidity surface and specific surface area. While the adsorption capacity of natural clay on purifying reused cooking oil got that optimal particel size of activated natural clay at 60 mesh which getting the decrease of water content, acid number and peroxide number by following reach was 89,13%, 58,61% and 60,52%.
PENGARUH PERBANDINGAN VOLUME FASA AIRDENGAN FASA ORGANIK DAN KONSENTRASI AgDALAMFASA AIR PADA EKSTRAKSI PERAKDARI LIMBAH FOTO ROENTGEN Minasari Minasari; Yeti Kurniasih; Ahmadi Ahmadi
Hydrogen: Jurnal Kependidikan Kimia Vol 4, No 1 (2016): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (565.624 KB) | DOI: 10.33394/hjkk.v4i1.45

Abstract

Roentgen photo waste containing silver metal ion (Ag+) in form of silver thiosulfic complex ([Ag(S2O3)2]3-) that danger for health and environment. To prevent contamination to environment by silver metal from roentgen photo waste, separation become need to do. Solvent extraction was one of available separation technique on this case. The aim of this research was to evaluate the influence of few extraction parameters that was water-organic phase ratio and Ag concentration on water phase to silver extraction percentage, and apply optimum condition to roentgen photo waste sample. Silver extraction was applied on various water-organic phase ratios, there were 5 : 10; 10 : 10; 25 : 10; 50 : 10; and 75 : 10 mL and various silver concentration on water phase, there were 10, 20, 30, and 40 ppm. Ag+ ion concentration was measured by AAS in 328.22 nm wavelength before and after extraction process, than calculation of silver extraction percentage could be conducted. Based on research result, optimum condition of silver extraction was obtained on 1 : 2 of water-organic phase ratio and 10 ppm of Ag concentration on water phase. 10,27 % silver extraction was obtained on application of optimum extraction condition on roentgen photo waste.
PENGARUH PERBANDINGAN KONSENTRASI TBP : D2EHPA DAN KONSENTRASI PENGEMBAN DALAM FASAORGANIK PADA EKSTRAKSI PERAK DARI LIMBAH FOTO ROENTGEN Novita Rusmayanti Andika Putri; Yeti Kurniasih; Ahmadi Ahmadi
Hydrogen: Jurnal Kependidikan Kimia Vol 4, No 2 (2016): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (526.134 KB) | DOI: 10.33394/hjkk.v4i2.92

Abstract

Photo roentgen used for examination of internal organs can produce wastes that are harmful to health and the environment because they containing silver metal ion(Ag+) inform of silver thiosulfate complex ([Ag(S2O3)2]-3). Therefore it was necessary for the separation of Ag metal so that the metal does not pollute the environment and can be used economically. One way to separate the metal Ag is by solvent extraction techniques. This study aimed to determine the effect of concentration ratio of TBP:D2EHPA and carrier compound concentration in the organic phase of the percent extraction of silver metal then applied to the sample photo roentgen waste. Extraction of the metals Ag done by varying the ratio of the combined carrier concentration of TBP and D2EHPA in kerosene by concentration ratio was 0: 1; 0.25: 0.75; 0.5: 0.5; 0.75: 0.25 and 1: 0 M as well as by varying the carrier concentration in the organic phase ranging from 0 M; 0.5 M; 1 M and 1.5 M. Measuring the concentration of metal ions Ag+in water phase before and after extraction was determined by atomic absorptionspectrophotometer (AAS) at a wavelength of 328,22 nm then calculated percent extraction. Based on the research that obtained the highest percent extraction on single used carrier compounds and compound concentration carrier D2EHPA in optimum water was 0.5 M with 58.22% percent extraction. Applications optimum conditions to the extraction of silver metal obtained from photo roentgenwaste percent extraction was 10.27%.
Co-Authors - Khaeruman . Kholik A.A. Ketut Agung Cahyawan W Abdul Sakban AHMADI Ahmadi Ahmadi Ahmadi Ahmadi Ahmadi Ahmadi Ahmadi Ahmadi Ahsanul Hak Aldina Putriari Andika Putri, Novita Rusmayanti Ayu Lestari Baiq Asma Nufida Baiq Asma Nufida Baiq Asma Nufida Citra Ayu Dewi Dahlia Rosma Indah Dewi Yuliatin Diah Lukitasari Fadilah, Aulia Rizki Hak, Ahsanul Hasan Basri Hendrawani Hendrawani Hendrawani, Hendrawani Husnul Hatimah Husnul Hatimah, Husnul Kurnia, Nova Lukitasari, Diah M. Muhali Minasari Minasari Minasari, Minasari Nova Kurnia Novita Rusmayanti Andika Putri Ratna Azizah Mashami, Ratna Azizah Riwu, Katty Hendriana Priscilia Samsul Bahri Sili, Jeniana Uba Sry Agustina Suci Cahyati Suci Cahyati Suryati Suryati Suryati Suryati Suryati Suryati Yusran Khery Yusran Khery Yusran Khery Yusran Khery, Yusran