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All Journal SOSIALITAS (Jurnal Ilmiah Pend. Sos-Ant) Indonesian Journal of Cancer Chemoprevention Jurnal Kimia Riset Jurnal Penelitian Pendidikan IPA (JPPIPA) INKUIRI : Jurnal Pendidikan IPA ALCHEMY Jurnal Penelitian Kimia Jurnal Pengabdian Pada Masyarakat JKPK (Jurnal Kimia dan Pendidikan Kimia) Bubungan Tinggi: Jurnal Pengabdian Masyarakat

Ulfa, Maria

Chemical Education Study Program, Faculty Of Teacher Training And Education, Sebelas Maret University, Jl. Ir. Sutami 36A, Surakarta 57126, Central Java Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Gadjah Mada, S

Author-ID : 749338

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology Physics Social Sciences Other

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STUDI EKSPLORATIF ALIRAN KEBATINAN PAGUYUBAN KAWRUH KODRATING PANGERAN (PKKP) DI PUCANGSAWIT SURAKARTA ULFA, MARIA -
ISSN.2252-8407
Publisher : SOSIALITAS; Jurnal Ilmiah Pend. Sos Ant

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (78.919 KB)

STUDI EKSPLORATIF ALIRAN KEBATINANPAGUYUBAN KAWRUH KODRATING PANGERAN (PKKP)DI PUCANGSAWIT SURAKARTAMARIA ULFAK8410036FAKULTAS KEGURUAN DAN ILMU PENDIDIKANUNIVERSITAS SEBELAS MARET2014 ABSTRAKJumlah anggota aliran kebatinan PKKP di Pucangsawit berkurang yang disebabkan oleh faktor usia, faktor pendidikan, penyebaran ajaran PKKP yang tidak terang-terangan, dan dari persepsi agama ajaran kebatinan merupakan ajaran yang sesat. Pelaksanaan ajaran kebatinan PKKP berdasarkan pada tiga pokok ajaran yaitu hubungan dengan Tuhan Yang Maha Esa, dengan diri sendiri (batin), dan dengan masyarakat. Kehidupan sosial budaya kaum penghayat kebatinan memberikan dampak pada lingkungan sekitarnya, yakni mereka ikut serta dalam upaya menjaga kerukunan dan pelestarian budaya Jawa, tetapi di sisi lain menimbulkan keresahan bagi tokoh agama maupun masyarakat karena ajaran kebatinan adalah ajaran yang menyimpang dari agama yang telah ditentukan oleh pemerintah. Keberadaan kaum penghayat kebatinan PKKP di Pucangsawit merupakan sebuah bentuk patologi sosial yang bersifat deviasi sistematik, yaitu penyimpangan yang dilakukan oleh sebuah organisasi terstruktur terhadap keyakinan yang dipeluk oleh masyarakat.Kata kunci : aliran kebatinan, kaum penghayat, patologi sosial.

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

INFLUENCE OF TIME AND CONCENTRATION ON TEXTURAL PROPERTIES OF MESOPOROUS CARBONS OF GELATIN PREPARED BY HARD-TEMPLATING PROCESS Maria Ulfa; Wega Trisunaryanti; Iip Izul Falah; Indriana Kartini
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 1, No 1 (2016): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v1i1.10126

Mesoporous carbons with different textural properties were prepared with gelatin by hard templating process. The effect silica removal condition (time and acid concentration) on the nanocomposite properties was studied during synthesis process. 1, 6, and 24 h silica removal times and 10%, 20%, 30% and 40% HF concentraton were chosen. Textural properties and microstructure of the nanocomposites were characterized by X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), Energy Dispersive X-ray Spectroscopy (EDAX), and N2 adsorption– desorption. Results showed that removal silica time process led to mesoporous nucleation and growth on the surface of mesoporous carbon. At decreasing of removal silica time and HF concentration the surface area and total pore volume increased from 410 to 760 m2/g and 0.14–0.99 cm3/g with almost same of the average pore diameter considerably at 4.1 nm. Furthermore, it was observed more homogeneous pore distribution with decreasing the silica removal time dan HF consentration. In conclusion, the silica removal time and acid concentration play an important role on textural properties of mesoporous carbon which could have a major effect on adsorption properties of sulfuric compound in the fuel.

Mesoporous Carbon in the Global World Maria Ulfa
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 1 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

This review provided information about the development of the synthesis aspect, preparation and application of mesoporous carbon in the global world based on research phenomenon on 100 mesoporous carbon papers published by Elsevier, ACS dan Springer during 25 year. Review results showed that researchers began to leave sucrose and switch to non-sucrose as carbon precursor. Researchers used sucrose about 90% in 1995-2000 and in 2010-2015 decrease to become 40%. Otherwise those using non-sucrose in 1995-2000 only 10%, recently increase to 60%. For the method used to synthesis the mesoporous carbon researchers prefer used soft template (about 75 %) before year 2000 and hard template (about 60%) in 2000-2010, but now the method used with soft templates, hard templates and combinations of both are balanced. From year 1995 until 2015 total researchers used sucrose as carbon precursor about 50% and researchers about 40% using hard template method, 35% using soft template method and the others using combination both of them. Structure form of the amorphous carbons are grown, from wormholes, cubic, until hexagonal, and modification to these fours forms. Physical properties such as pore size, surface area, and structural order were developed for better performance year to year. Mesoporous carbon application up to 60% were used in the fuel production and refineries, but the other using on the communication tenhnologies and medical areas. All of the mesoporous carbon in the global world shows that mesoporous carbon is a future material which has a great opportunity to develop especially in Indonesia and other developing countries. Indonesia have various natural resources as a carbon source, so in the future Indonesia are expected as one of the countries of mesoporous carbon supplier

Study of Adsorption Capacity of Dibenzotiofen Molecules on Mesoporous Carbon with Pore Geometry Model Maria Ulfa; Farhah Nayla Fawzia
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 2 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Adsorption models in a simple and accurate way to describe the geometry of the pores have been studied and validated experimentally to predict the adsorption capacity dibenzotiofen molecules on mesoporous carbon. The model is designed according to the size of the pore channels of mesoporous carbon and molecular arrangement dibenzotiofen that goes into the pores. To test the accuracy of the model is done by comparation with results of analysis of nitrogen adsorption-desorption to calculate the volume filled. The results showed that the results of the experimental adsorption data are within the range of values of the pore volume of mesoporous carbon. These results indicate that the pore geometry model molecule can accurately predict the adsorption capacity of a molecule in a mesoporous material.

Preparation of Silver-Chitosan Nanocomposites Colloidal and Film as Antibacteri Material Endang Susilowati; Mohammad Masykuri; Maria Ulfa; Dyah Puspitasari
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 3 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v5i3.46711

Colloidal nanocomposites silver-chitosan have been made. Silver nanoparticles were produced by chemical reduction methods assisted microwave irradiation using chitosan from crab shells as a reducing agent and stabilizer, AgNO3 as a precursor and NaOH as an accelerator. This study investigated AgNO3 concentration toward localized surface plasmon resonance (LSPR) phenomenon of nanocomposites colloidal. The size and shape of the silver nanoparticles were confirmed by TEM. Furthermore, the stability of the storage was observed for twelve weeks. Colloidal and film nanocomposites silver- chitosan have been made by casting method by drying at room temperature. After that, the film characterization was carried out, including swelling with gravimetry methods and surface morphology using scanning electron microscopy (SEM). Diffusion methods tested colloid antibacterial activity and silver-chitosan nanocomposite film’s against E. Coli and S. Aureus. The results showed that the formation of silver nanoparticles was identified by the LSPR absorption band's appearance at 413-419 nm. The increasing of AgNO3 concentration increased the intensity of the LSPR absorption band. Silver nanoparticles with sizes of about 3-9 nm are spherical. The silver nanoparticles were stable at 12 weeks of storage. The higher AgNO3 concentration tends to increase the swelling of the film. The surface of the silver-chitosan nanocomposite film’s was rougher than that of the chitosan film. The higher the silver nanoparticle concentration, the higher the colloid and film antibacterial activity against E. Coli and S. Aureus.

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

EFEKTIVITAS MODUL ELEKTRONIK BERBASIS SAINTIFIK PADA MATERI KELARUTAN DAN HASIL KALI KELARUTAN UNTUK MENINGKATKAN KETERAMPILAN PROSES SAINS SISWA SMA Bayu Antrakusuma; Mohammad Masykuri; Maria Ulfa; Isma Aziz Fakhrudin; Icha Kurnia Wati; Annisa Nur Khasanah; Meida Wulan Sari
INKUIRI: Jurnal Pendidikan IPA Vol 10, No 1 (2021): INKUIRI: Jurnal Pendidikan IPA
Publisher : Magister Pendidikan Sains Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/inkuiri.v10i1.39538

Penelitian ini bertujuan untuk mengetahui keefektivitasan modul elektronik berbasis saintifik pada materi kelarutan dan hasil kali kelarutan untuk meningkatkan keterampilan proses sains siswa SMA. Penelitian keefektifan modul elektronik berbasis saintifik ini didahului dengan penelitian pengembangan (RnD) terlebih dahulu dengan jenis penelitian yang digunakan yaitu model pengembangan media yang mengacu pada teori Borg dan Gall dengan langkah-langkah yaitu, 1) penelitian dan mengumpulkan informasi, 2) merencanakan, 3) mengembangkan bentuk awal produk, 4) uji lapangan awal, 5) Rrevisi produk utama, 6) uji lapangan utama, 7) revisi produk operasional, 8) uji lapangan operasional, 9) revisi produk akhir, dan 10) diseminasi. Uji efektifitas produk modul elektronik dilaksanakan pada bagian revisi produk akhir. Sumber data pada penelitian ini berasal dari siswa SMAN 1 Teras. Subjek penelitian yang digunakan adalah 68 siswa dengan rincian masing-maing 34 siswa dari kelas XI MIA 2 dan XI MIA 3.Teknik penelitian yang digunakan adalah observasi. Observasi keterampilan proses sains dilakukan oleh tiga observer. Teknik analisis data yang digunakan adalah analisis deskriptif kualitatif dan kuantitatif. Hasil uji statistik menunjukkan ada perbedaaan nilai keterampilan proses sains (KSP) antara kelas kontrol dan eksperimen sehingga modul elektonik berbasis sainstifik ini efektif digunakan dalam pembelajaran guna memberdayakan keterampilan proses sains siswa.This study aims to determine the effectiveness of scientific-based electronic modules on solubility and solubility product materials to improve science process skills of high school students. Research on the effectiveness of this scientifically based electronic module was preceded by development research (RnD) first with the type of research used, namely the media development model that refers to the Borg and Gall theory with steps, namely, 1) research and collecting information, 2) planning, 3 ) developing the initial form of the product, 4) initial field test, 5) main product revision, 6) main field test, 7) operational product revision, 8) operational field test, 9) final product revision, and 10) dissemination. The test of the effectiveness of the electronic module product is carried out in the revision of the final product. Sources of data in this study came from students of SMAN 1 Teras. The research subjects used were 68 students with details of 34 students from class XI MIA 2 and XI MIA 3. The research technique used was observation. Observations of science process skills were carried out by three observers. The data analysis technique used is descriptive qualitative and quantitative analysis. The results of the statistical test showed that there was a difference in the value of science process skills (KSP) between the control and experimental classes so that this scientifically based electronic module was effectively used in learning to empower students' science process skills.

ANALYSIS OF MICROPOROSITY ON POROUS CARBON FROM GELATIN (KPG) USING N2 ADSORPTION-DESORPTION BY DUBININ–RADUSHKEVICH (D-R) MODEL Maria Ulfa
ALCHEMY Jurnal Penelitian Kimia Vol 13, No 1 (2017): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.13.1.4070.103-118

Porous gelatin carbons (KPG) sample with micropores were synthesized from gelatin via templating method. This study analyzed microporosity using the Dubinin– Radushkevich (D-R) equation. The result shows that KPG sample has microporous type with empirical parameter n=2 which describing the homogeneous degree of KPG with the high order of micropore filling. D-R plot shows that the increasing the ratio of gelatin to SBA-15 led to the decreasing the microporosity of samples. However, this increases the size and pore volume due to the success of templating process.The result of TEM shows the carbon particle aggregation and FTIR result shows that carbon particle were dominated by the functional group of oxygen and hydrocarbon. The energy of adsorption range of 5-10 kJ/mol and a value of n=2 demonstrated that the adsorption of nitrogen on the porous gelatin carbon (KPG) physically occurred which is applicable to the next gas adsorption process.

Co-Authors Anif Nur Artanti Annisa Nur Khasanah Ari Syahidul Shidiq Bakti Mulyani Bakti Mulyani Bayu Antrakusuma Budi Utami Dyah Puspitasari Endang Susilowati Farhah Nayla Fawzia Icha Kurnia Wati Ida Setiarini Iip Izul Falah Ika Uswatun Hasanah Indriana Kartini Isma Aziz Fakhrudin Kusumandari, Kusumandari Meida Wulan Sari Mohammad Masykuri Sri Yamtinah Teguh Endah Saraswati Wega Trisunaryanti

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