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All Journal Indonesian Journal of Cancer Chemoprevention Jurnal Kimia Riset Jurnal Teknologi dan Sistem Komputer International Journal of Science and Applied Science: Conference Series Jurnal Penelitian Pendidikan IPA (JPPIPA) INKUIRI : Jurnal Pendidikan IPA ALCHEMY Jurnal Penelitian Kimia Jurnal Pengabdian Pada Masyarakat Jurnal Pendidikan Kimia (JPKim) Indonesian Journal of Chemistry Communications in Science and Technology International Journal of Pedagogy and Teacher Education International Journal of Community Service Learning JKPK (Jurnal Kimia dan Pendidikan Kimia) Bubungan Tinggi: Jurnal Pengabdian Masyarakat Jurnal Abdi Masyarakat Indonesia Bulletin of Chemical Reaction Engineering & Catalysis Journal of Environment and Sustainability Education

Maria Ulfa

Universitas Sebelas Maret

Author-ID : 749338

Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Korelasi hasil karakterisasi XRD, N2 adsorpsi-desorpsi dan TEM pada Karbon Mesopori dari Gelatin Tulang Sapi Maria Ulfa
Jurnal Kimia Riset Vol. 1 No. 2 (2016): Desember
Publisher : Universitas Airlangga

Abstrak Artikel ini mengkaji hubungan hasil karakterisasi dengan kualitas karbon mesopori. Kualitas struktur karbon mesopori teramati dengan jelas baik pada TEM, SAXRD dan nitrogen adsorpsi-desorpsi meskipun karbon mesopori. Dari hasil SAXRD, TEM dan nitrogen adsorpsi-desorpsi, karbon mesopori hasil sintesis memiliki luas permukaan spesifik dari 756 m2/g, total volume pori 0,999 cm3/g, rasio mesopori dari 81%, diameter pori rata-rata 5,2 nm dan distribusi ukuran pori 4,06 dengan geometri mirip susunan tabung dengan formasi heksagonal. Langkah pengolahan data FFT dan program scion image serta penggunaan origin mampu secara detil dijelaskan untuk mendeteksi kualitas keteraturan struktur karbon mesopori hasil sintesis. Kata kunci : karakterisasi, TEM, XRD, N2-adsorpsi desoprsi, karbon mesopori

The Effect of Co-Administration of Telang Leaves Ethanolic Extract Towards Fluoxetin’s Sedative Effect on Male Balb/C Mice Based on Sleeping Duration Parameter Anif Nur Artanti; Maria Ulfah
Indonesian Journal of Cancer Chemoprevention Vol 6, No 1 (2015)
Publisher : Indonesian Society for Cancer Chemoprevention

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14499/indonesianjcanchemoprev6iss1pp7-11

One of Telang plant’s advantages is its activity as sedative agent. Previous studies indicate that Telang plant has anticonvulsant activity on mice at certain dose. This study was conducted to find out the sedative effect of Telang plant, particularly its leaf, when being co-administered with fluoxetin. Phytochemical analysis was carried out qualitatively on Telang ethanolic extract leaves (TEE) to find out the content of chemical compound first.This study was an experimental research with post-test only control group design, employing male balb/c mice. The effect of Telang ethanolic extract co-administration with fluoxetin was observed. The parameter being used in the study was the duration of sleep. Analysis was done by comparing mice sleeping duration prior to administration of fluoxetin alone and in combination with Telang ethanolic extract. The data was then analyzed using SPSS 17.0 for Windows.The results showed that TEE contained tannin, saponin, and flavonoid compounds, and co-administration of TEE and fluoxetin at various doses could provide sedative effect on mice. The co-administration of 400 mg/kgBW extract and 15 mg/kgBW fluoxetin could provide the mean sleeping duration 43 minutes longer than positive control.Keywords: telang leaves ethanol extract, fluoxetin, sleeping duration

Secondary School Science Teacher Response to Minimum Competency Assessment: Challenges and Opportunities Sri Yamtinah; Budi Utami; Mohammad Masykuri; Bakti Mulyani; Maria Ulfa; Ari Syahidul Shidiq
Jurnal Penelitian Pendidikan IPA Vol 8 No 1 (2022): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i1.1075

Teachers have an essential role in preparing students for Minimum Competency Assessment (MCA) or Asesmen Kompetensi Minimum (AKM). It takes preparation, readiness, and a good teacher's perception of the AKM so that the implementation of this program goes well. This study aims to analyze teachers' perceptions in secondary schools related to the opportunities and challenges of implementing AKM. A total of 66 secondary school science teachers participated as respondents in this study. Respondents in this study were randomly selected based on their willingness to fill out a given survey. The data collection instruments were six open-ended questions. This instrument is distributed online using Google Forms. The data obtained were then analyzed qualitatively and quantitatively. The results of this study reveal that the majority of science teachers have the perception that AKM policy is appropriate and suitable for implementation. However, the availability of supporting facilities and ICT literacy of students and teachers is considered a challenge that must be met. On the other hand, AKM and National Assessment (NA) are considered opportunities to improve the quality of education both nationally and locally in schools. This research is expected to reference the perception of science teachers about the challenges and opportunities for implementing AKM policies in junior high schools

Hand Sanitizer dari Daun Mangga sebagai Upaya Menekan Penyebaran Pandemi Covid-19 di Wilayah Jebres dan Polokarto Maria Ulfa; Ida Setiarini; Ika Uswatun Hasanah; Kusumandari Kusumandari; Teguh Endah Saraswati
Jurnal Pengabdian Pada Masyarakat Vol 6 No 4 (2021)
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30653/002.202164.900

HAND SANITIZER FROM MANGO LEAVES AS AN EFFORT TO SUPPRESS THE SPREAD OF THE COVID-19 PANDEMIC IN THE JEBRES AND POLOKARTO REGIONS. Covid-19 is an international pandemic that still has many victims. The UNS Campus area is a vulnerable area because apart from being public, there are also many residents who live around the campus which can be a medium for spreading the virus. The implementation of the health protocol, one of which is washing hands with running water or using a hand sanitizer, is one of the preventive measures to prevent the spread of the virus. Synthetic hand sanitizers have a lot of impact, especially for people who are sensitive to chemicals such as alcohol or synthetic disinfectants. On the other hand, the use of hand sanitizers has an important position to suppress the spread of the virus because it has the power to deactivate proteins from the Covid-19 spike section. Therefore, a breakthrough is needed to make natural hand sanitizers that are cheaper and have long-term sustainability. One of the natural ingredients that have a high antibacterial content is mango leaves. Various studies have stated that the tannin content of mango leaves is around 1.0 mg/g capable of deactivating bacteria and viruses. Unfortunately, so far, mango leaves are not used much except as fertilizer and more is wasted as garbage. In addition, the long pandemic period has caused the community not to have large reserves of hand sanitizers for their daily needs. Therefore, in this community service, training on the manufacture of hand sanitizers was carried out in the area around the UNS campus to provide skills to the community in procuring hand sanitizers independently from the plants around them as well as providing stock of natural hand sanitizers for people who are sensitive to chemicals.

Wormhole-Like Mesoporous Carbons from Gelatine as Multistep Infiltration Effect Maria Ulfa; Wega Trisunaryanti; Iip Izul Falah; Indriana Kartini
Indonesian Journal of Chemistry Vol 16, No 3 (2016)
Publisher : Universitas Gadjah Mada

Wormhole-like mesoporous carbon from gelatine (WMCG) with two different pore diameters have been synthesized by adopting a modified infiltration treatment. The infiltration effect on the morphology was investigated. The results show that the WMCG sample was obtained after dehydration, pyrolysis and silica removal process. The pore diameters WMCG are 15.2 and 4.8 nm with specific surface areas of 280 m2/g, total pore volumes of 0.5 cm3/g and the thermal stability up to 1400 °C. The bimodal pore of WMCG obtained as the high step of infiltration level effect.

Simple and Green Preparation of ZnO Blended with Highly Magnetic Silica Sand from Parangtritis Beach as Catalyst for Oxidative Desulfurization of Dibenzothiophene Wega Trisunaryanti; Safa Annissa Novianti; Dyah Ayu Fatmawati; Triyono Triyono; Maria Ulfa; Didik Prasetyoko
Indonesian Journal of Chemistry Vol 22, No 2 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.69938

Simple and green preparation of ZnO blended with Parangtritis beach sand (BS) catalysts for oxidative desulfurization of dibenzothiophene (ODS-DBT) has been conducted. The ZnO-BS catalysts were prepared by blending ZnO with beach sand under a weight ratio of 1:1, 1:2, and 1:4, and then heated by microwave (MW) at 540 watts for 30 min, resulting in BS-MW, ZnO-MW, ZnO-BS-1-MW, ZnO-BS-2-MW, and ZnO-BS-4-MW, respectively. As a comparison, the ZnO-BS-1 was also heated by oven at 100 °C for 30 min produced ZnO-BS-1-OV. Each product was characterized by XRF, XRD, FTIR, acidity test by NH3 vapor adsorption, SAA, SEM-EDX, TEM, and magneticity test by an external magnetic field. Furthermore, each material was applied for ODS-DBT, and its product was analyzed by UV-Vis spectrophotometer and FTIR. The results showed that ZnO-BS-1-OV had the highest acidity of 2.3486 mmol/g and produced the highest DBT removal efficiency through the ODS reaction of 81.59%. The use of catalysts in ODS-DBT does not affect the main structure of the treated fuel. Therefore, the combination of ZnO with BS can provide good performance in ODS activity and facilitate the separation of catalysts after the reaction due to its magnetic iron oxide content.

Pendampingan Produksi Mie Sayuran Kekinian sebagai Upaya Meningkatkan Penghasilan UMKM Makanan di Karanganyar Jawa Tengah Endang Susilowati; Mohammad Masykuri; Maria Ulfa
Jurnal Abdi Masyarakat Indonesia Vol 2 No 3 (2022): JAMSI - Mei 2022
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54082/jamsi.375

Usaha Mikro, Kecil, dan Menengah (UMKM) berpotensi untuk dikembangkan di masa pandemi karena kemampuan menyerap tenaga kerja dan menggunakan sumberdaya lokal, serta usahanya relatif bersifat fleksibel. Salah satu usaha kecil yang menarik untuk dikembangkan adalah usaha mie yang telah menjadi komuditas yang digemari masyarakat. Adapun jenis mie yang potensial untuk dikembangkan pada UMKM berbasis makanan adalah mie sayuran. Berdasarkan observasi di UMKM mie kekinian dengan merk “Nyelekitz” yang dikelola oleh Ibu Yuli di Kabupaten Karanganyar Jawa Tengah, ada masalah utama yang perlu diselesaikan. Masalah utama yang dihadapi adalah mie dan bumbunya masih dibeli dari tengkulak dan hanya 1 varian mie saja. Oleh karena itu tim pengabdian UNS melakukan pelatihan dan pendampingan produksi mie dengan varian aneka mie sayuran kekinian. Adapun metode yang dilakukan oleh tim pengabdian adalah melalui pelatihan dan pendampingan kepada mitra pada pembuatan mie sayuran dan bumbunya. Setelah mitra mahir membuat mie sayuran dan layak untuk dipasarkan, maka tim pengabdian melakukan pendampingan dalam pengemasan. Dari kegiatan pengabdian yang telah dilakukan diperoleh hasil bahwa mitra telah trampil membuat mie sayuran dan membuat bumbu mie kekinian. Berdasarkan uji organoleptic, produk mie yang dihasilkan disukai dan sudah layak dipasarkan. Pemasaran produk mie dilakukan di kedai rumah dan online melalui WA grup. Dengan kegiatan pengabdian ini mitra merasa sangat terbantu dan telah meningkatkan omset penjualan dan pendapatan hasil usaha mie kekinian.

TATOPSIS: A decision support system for selecting a major in university with a two-way approach and TOPSIS Dewi Wardani; Widyaswari Mahayanti; Haryono Setiadi; Maria Ulfa; Endar Wihidayat
Jurnal Teknologi dan Sistem Komputer Volume 10, Issue 1, Year 2022 (January 2022)
Publisher : Department of Computer Engineering, Engineering Faculty, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jtsiskom.2021.14074

Several problems can occur when students feel they have made the wrong choice of major in university. Choosing a major is one of the problems that students often face. Therefore, this study aims to develop a Decision Support System (DSS) to help students find majors that match their interests and abilities. This DSS proposes a two-way approach by considering students and the major's requirements, standards, and characteristics. The DSS utilizes the TOPSIS method; therefore, it is called TATOPSIS, which stands for Two-way Approach TOPSIS. It showed that the two-way approach in Scenario 1 (without score normalization) and Scenario 3 (with score normalization) shows better agreement results in 78.33% and 73.33% than the two-way approach for Scenario 2, Scenario 4, and the student-one-way approaches.

Penguatan Kemampuan Guru-Guru Kimia SMA di Surakarta dalam Menyiapkan Instrumen AKM Literasi Membaca dan Numerasi berbasis Sains Kimia Ari Syahidul Shidiq; Sri Yamtinah; Mohammad Masykuri; Maria Ulfa; Bakti Mulyani
Bubungan Tinggi: Jurnal Pengabdian Masyarakat Vol 4, No 4 (2022)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/btjpm.v4i4.6158

Asesmen Kompetensi Minimum (AKM) merupakan bagian dari Asesmen Nasional yang merepresentasikan survey pengetahuan siswa dan kualitas Pendidikan Nasional. Pada AKM diukur kompetensi berpikir atau bernalar siswa ketika membaca teks (literasi) dan menghadapi persoalan yang membutuhkan pengetahuan matematika (numerasi). Selama ini guru-guru biasa menyusun instrumen tes yang berorientasi pada penguasaan materi, dan belum terbiasa untuk mengembangkan instrumen yang berorientasi pada literasi membaca dan numerasi. Terlebih, pada guru-guru Kimia yang dianggap memiliki kontribusi kecil pada keterampilan literasi dan numerasi. Oleh karena itu, pengabdian ini bertujuan untuk melakukan penguatan kemampuan guru-guru kimia SMA di Kota Surakarta dalam menyiapkan instrumen AKM literasi membaca dan numerasi berbasis sains kimia. Kegiatan pengabdian akan dilakukan melalui pelatihan dengan bentuk penyuluhan, focus group discussion (FGD) dan pendampingan menyusun butir-butir soal instrumen literasi membaca dan numerasi berbasis konteks sains kimia. Sebanyak 33 orang guru kimia dari Surakarta berpartisipasi aktif sebagai peserta pelatihan. Berdasarkan hasil evaluasi terhadap program pengabdian yang dilakukan, sebanyak 63.6% peserta sangat setuju, dan 36.4% peserta setuju bahwa kegiatan yang dilakukan sangat sesuai dengan kebutuhan mereka. Selain itu, sebanyak 72.7% peserta sangat setuju, dan 27.3% setuju bahwa kegiatan pengabdian ini dapat meningkatkan pengetahuan dan keterampilan mereka untuk mengembangkan instrumen literasi membaca dan numerasi berbasis sains kimia. Hasil ini diharapkan dapat menjadi acuan bagi para guru kimia dan bidang lainnya untuk dapat mengembangkan instrumen AKM berbasis konteks materi pelajaran

Influence of Calcination Temperatures on Gunningite-Based Gelatin Template and Its Application as Ibuprofen Adsorption Maria Ulfa; Muhammad Ari Purnama Ali
Indonesian Journal of Chemistry Vol 22, No 6 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.77004

Gunningite has been successfully synthesized using the soft template method with the Pluronic F127-gelatin template. Gunningite was calcined at diverse temperatures of 500, 600, and 700 °C for 12 h and characterized by XRD, SEM, and FTIR. A UV-Vis Spectrophotometer measured the adsorption capacity of Gunningite against ibuprofen. The XRD results showed that the crystal sizes of Gunningite decreased from 35.41 to 28.31 nm with the increasing calcination temperature from 500 to 700 °C. Besides, the crystallinity degrees also increased from 49.94% to 56.13% as calcination temperature increased from 500 to 700 °C. The Gunningite formed aggregates in the form of tiny particles that merge and experience agglomeration. The FTIR spectra of the Gunningite samples demonstrated the functional groups –OH, Zn-OH, Zn-O-Zn, and gunningite vibrations. The maximum adsorption capacities of Gunningite to adsorb ibuprofen were 233.161 mg g−1 (500 °C), 219.543 mg g−1 (600 °C), and 227.033 mg g-1 (700 °C). The kinetic model of Gunningite on the ibuprofen adsorption followed the kinetic model of Ho and McKay.

Co-Authors Afifah Khoirunnisa Agung C. Saputro Agung Nugroho Catur Saputro Agung Nugroho Catur Saputro Agung Nugroho Catur Saputro Agung Nugroho Catur Saputro Anif Nur Artanti Anisa Ayu Solikah Annisa Nur Khasanah Ari Syahidul Shidiq Ari Syahidul Shidiq Ari Syahidul Shidiq Ari Syahidul Shidiq Ari Syahidul Shidiq Ari Syahidul Shidiq Ari Syahidul Shidiq Atmia Lauhiulafa Bakti Mulyani Bakti Mulyani Bakti Mulyani Bayu Antrakusuma, Bayu Bella Windira Sari Budi Utami Cindy Nur Anggreani Dewi Wardani Didik Prasetyoko Dyah Ayu Fatmawati Dyah Ayu Fatmawati Dyah Puspitasari Elfi Susanti Vh Endang Susilowati Endang Susilowati Endar Wihidayat Esa Karisyah Putri Utomo Farhah Nayla Fawzia Hafid Al Afif Haryono Setiadi Icha Kurnia Wati Ida Setiarini Ida Setiarini Ida Setiarini Iip Izul Falah Iip Izul Falah Ika Uswatun Hasanah Ika Uswatun Hasanah Ika Wulandari Indriana Kartini Indriana Kartini Isma Aziz Fakhrudin Istinganah Saestu Rohmah Istinganah Saetu Rohmah Karima Majid Kusumandari, Kusumandari Laras Kusuma Wardani Meida Wulan Sari Mohammad Masykuri Mohammad Masykuri Mohammad Masykuri Mohammad Masykuri Mohammad Masykuri Mohammad Masykuri Muhammad Ari Purnama Ali Naimina Restu An Nabil Nanik Dwi Nurhayati Novia Amalia Sholeha Nurma Yunita Indriyanti Rizki Fauzia Hanif Safa Annissa Novianti Safa Annissa Novianti Salma Fauzia Wardani Sandini Ajeng Istanti Satriyo Dibyo Sumbogo Sri Mulyani Sri Retno Dwi Ariani Sri Yamtinah Sulistyo Saputro Suwiji Lestari Teguh Endah Saraswati Triyono Triyono Viki Nurlatifah Warih Purwendah Wega Trisunaryanti Wega Trisunaryanti Wega Trisunaryanti Wega Trisunaryanti Wega Trisunaryanti Widyaswari Mahayanti Windi Apriliani Wirawan Ciptonugroho Yatim Lailun Ni’mah Youlanda Jesiva Alba Yuli Iswanti Yuvita Eka Pertiwi Zahra Ayu Fadhilah Zamira Zia'ul Huda Zulfana Qoulan Syadida

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