Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

6.207

P-Index

This Author published in this journals

All Journal International Journal of Evaluation and Research in Education (IJERE) Jurnal Fisika dan Pembelajarannya Cakrawala Pendidikan Jurnal Penelitian dan Evaluasi Pendidikan Jurnal Civics: Media Kajian Kewarganegaraan Jurnal Ilmiah WUNY POSITRON Jurnal Penelitian Fisika dan Aplikasinya (JPFA) EDUSAINS Jurnal Sains Dasar Jurnal Sains dan Teknologi JURNAL FISIKA JFA (Jurnal Fisika dan Aplikasinya) Omega: Jurnal Fisika dan Pendidikan Fisika REiD (Research and Evaluation in Education) JIPF (Jurnal Ilmu Pendidikan Fisika) Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Pendidikan Fisika dan Keilmuan (JPFK) Spektra: Jurnal Fisika dan Aplikasinya Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Jurnal Kumparan Fisika Jurnal Eduscience (JES) Indonesian Review of Physics (IRiP) Journal of Multidisciplinary Applied Natural Science Ethnomathematics Journal Makara Journal of Science Jurnal Ilmu Fisika dan Terapannya (JIFTA) Jurnal Pendidikan MIPA

Wipsar Sunu Brams Dwandaru

Universitas Negeri Yogyakarta

Author-ID : 256169

Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

Published : 72 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3 4 5

Kajian Mekanisme Jalur Andong-Becak-Sepeda dalam Rangka Meningkatkan Sektor Kepariwisataan Kawasan Pusat Kota Yogyakarta Wipsar Sunu Brams Dwandaru
Jurnal Ilmiah WUNY Majalah WUNY XVIII Nomor 1, Februari 2016
Publisher : Universitas Negeri Yogyakarta

Indonesia merupakan salah satu negara berkembang yang saat ini sedang berusaha untuk meningkatkan kualitas bangsa, baik dari segi sumber daya alam maupun sumber daya manusianya. Seiring berjalannya waktu, peningkatan kualitas bangsa juga mendorong semakin meningkatnya mobilitas manusia yang akhirnya berakibat semakin diperlukannya alat transportasi. Saat ini, hampir setiap orang memiliki kendaraan pribadi karena tidak memadainya transportasi publik. Banyak pula dijumpai rumah-rumah penduduk yang memiliki lebih dari satu kendaraan, sehingga jumlah kendaraan yang semakin banyak menyebabkan semakin besarnya resiko kemacetan di jalan.

TOWARDS STUDYING NON-EQUILIBRIUM STATISTICAL MECHANICS THROUGH DYNAMICAL DENSITY FUNCTIONAL THEORY Wipsar Sunu Brams Dwandaru
Jurnal Sains Dasar Vol 2, No 1 (2013): April 2013
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Abstract In this brief article, the extension of density functional theory for non-equilibrium systems is presented. Density functional theory is a powerful framework in order to study the static properties of electronic systems via a variational principle whereby the density (varies in 3 dimension space) holds a key role instead of the many-body wave function. Evans (Adv. Phys., 1979) fully realized the importance of this and extended the theory for inhomogeneous fluid systems. Then in an urgent need to extend the theory for dynamical equilibrium or non-equilibrium systems, comes dynamical density functional theory. Here, the idea behind dynamical density functional theory is given based on the Smoluchowski equation. Keywords: density functional theory, non-equilibrium systems, variational principle, Smoluchowski equation

SIMULATION ANALYSIS OF THE TOTALLY ASYMETRIC SIMPLE EXCLUSION PROCESS TO DETERMINE THE PROFIL OF THE ONE-BODY CORRELATION FUNCTION, TWO-BODY CORRELATION FUNCTION, AND THREE-BODY CORRELATION FUNCTION AROUND THE ENDS OF THE LATTICE WITH LATTICE NUMBER VARIATION R. A. Adipurno; Wipsar Sunu Brams Dwandaru; Denny Darmawan; Bambang Ruwanto
Jurnal Sains Dasar Vol 4, No 1 (2015): April 2015
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

This study aimed to determine the behavior of one-body, two-body, and three-body correlation functions of the model dynamics TASEP with sequential updating rules and open boundary conditions on vehicular traffic around the end of the traffic light. The study began with the determination of algorithm to model the dynamics of TASEP and coding, with the variation of the input rate (α) , the output rate (β), and the number of lattice sites (N). Then the program run with specific time limit (t) and number of systems (M). The value of the one-body correlation function determines the average occupancy of particles in lattice site-i at time t. Two-body correlation function determines the average occupancy of particle at site-i when there is another particle occupying the nearest neighbor lattice, i+1, at time t. Three-body correlation function determines the average occupancy of particles to occupy lattice site-i when there are other particles occupying the nearest and next nearest neighbor lattice sites, i+1 and i+2, at time t. The value of the one-body correlation function turns out to be larger than the value of the two-body correlation function. The value of the two-body correlation function is larger than the value of the three-body correlation function for all phases. The correlation between a vehicle to another vehicle will be even greater. Keywords: TASEP, sequential updating, n-body correlation function

Sintesis dan Karakterisasi Antibakteri Polyacrylamide yang Difungsionalisasi oleh Graphene Oxide dengan Metode Adsorpsi Fisis Fika Fauzi; Silvia Nur Fatmawati; Fitria Wulandari; Wipsar Sunu Brams Dwandaru
Jurnal Sains Dasar Vol 9, No 2 (2020): October 2020
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jsd.v9i2.38966

Inovasi dalam teknologi pelapis antibakteri sangat dibutuhkan untuk melawan kolonisasi bakteri pada permukaan peralatan fungsional seperti peralatan medis. Pelapis antibakteri tersebut selain memiliki efek antibakteri juga harus bersifat tidak beracun atau biokompatibel. Polyacrylamide (PAM) terkenal sebagai polimer yang biokompatibel namun tidak memiliki efek antibakteri dan graphene oxide (GO) merupakan salah satu material baru yang memiliki efek antibakteri. Dalam studi ini, komposit PAM/GO telah disintesis dengan pendekatan adsorpsi fisis antara molekul polimer dan lembaran GO melalui metode ultrasonik. Struktur dari komposit ini kemudian dianalisis dengan spektroskopi UV-Vis dan FTIR. Dari data spektroskopi tersebut diperoleh bahwa komposit PAM/GO berhasil disintesis melalui pendekatan interaksi adsorpsi fisis. Sementara itu, uji antibakteri pada bakteri S. aureus menunjukkan bahwa PAM/GO memiliki efek antibakteri yang signifikan meskipun dengan komposisi GO yang hanya 1,5% dari komposisi PAM. Hal ini dapat menjadi pembuka untuk memanfaatkan PAM/GO sebagai pelapis antibakteri yang biokompatibel.

An extension of Gibbs variational principle for canonical partition function Elisabeth Pratidhina Founda Noviani; Wipsar Sunu Brams Dwandaru
Jurnal Sains Dasar Vol 2, No 1 (2013): April 2013
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Abstract A variational principle is derived based upon the canonical partition functions. This variational principle is obtained using the Gibbs variational principle. Firstly, the Gibbs variational principle is highlighted for the canonical ensemble. Then, the Gibbs variational principle is modified such that a variational principle concerning the partition function is obtained. The latter variational principle is useful as the canonical partition function is an important quantity in deriving many thermodynamic quantities of a physical system based upon the distribution of the constituents that makes up the system. Key words: variational principle, Gibbs variational principle, partition function

Optical Properties Comparison of Carbon Nanodots Synthesized from Kangkung (Ipomoea aquatica) with Deep Frying and Roasting Techniques Wipsar Sunu Brams Dwandaru; Fika Fauzi; Dyah Silviana Sari; Emi Kurnia Sari; Iman Santoso; Haris Suhendar
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 9 No. 2 (2019)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v9n2.p123-131

Carbon nanodots (Cdots) have many unique properties such as luminescence that can be utilized in various fields. The purposes of this study are to synthesize Cdots from kangkung (Ipomoea aquatica) through frying and roasting techniques and compare the optical properties of the Cdots using UV-Vis, PL, and FTIR. Three stages of synthesizing process of Cdots, i.e.: preparing the kangkung powder (root, stem, leaf) and synthesizing the Cdots through frying and roasting techniques. Each part (root, stem, and leaf) was heated in an oven at 250 oC for 2 hours and mashed into powder. The frying method was done by frying 15 g of the powder in 120 ml oil for 5 minutes at 88 oC, filtered, and dissolved in n-hexane. In addition, the roasting method was done by frying the powder without oil as much as 15 g for 5 minutes, dissolved in 120 ml of distilled water, and then filtered. The UV-Vis characterization showed one absorbance peak for Cdots via frying and roasting techniques at 293 nm to 296 nm and 262 nm to 282 nm, respectively. The Cdots through frying and roasting techniques produce red and green luminescence, respectively. The FTIR characterization showed the presence of C=C and C=O functional groups, which are the core and surface state of the Cdots by frying technique, while the samples via roasting technique showed only the core. It can be concluded that the Cdots samples obtained from frying and roasting methods have different optical properties. The frying method produces Cdots with longer wavelength at the absorbance peak in the UV-Vis test compared to the roasting method. Moreover, the frying and roasting methods produce different color luminescence.

The Effect of Roasting Temperature at 400C and Sulphuric Acid Concentration on TiO2 Extraction Process from Zircon Sand Ilmenite Eryuni Setyani; Tito Prastyo Rahman; Dwi Wahyu Nugroho; Sunardi Rahman; Fitria Irawan; Radyum Ikono; Nurul Taufiqu Rochman; Wipsar Sunu Brams Dwandaru
Jurnal Fisika dan Aplikasinya Vol 10, No 3 (2014)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

In this research, roasting temperature at 400C and sulphuric acid concentration variations was conducted to obtain titanium dioxide from zircon sand. The research was done through extraction metallurgy method which involved physical, chemical, and mechanical treatments. Zircon was magnetically separated, mixed with NaOH, and roasted with temperature of 400C. Characterization with XRD of the sample before and aftermagnetic separation was conducted. Peaks obtained from NaFeO2, NaTiO2, Na0.75Fe0.75Ti0.25O2, and TiO2 compounds were observed. In this study, the leaching process lasted in two stages. For the first leaching samples of combustion products are leached using distilled water to remove water-soluble impurities. For the second stage, the deposition obtained from stage one is leached using 8, 10, and 12 M concentrated sulphuric acid at high temperature to dissolve iron. XRD was used to characterize TiO2. The result showed that the sample at temperature of 400C and concentrated sulphuric acid of 12Mis whiter in colour compared to other samples. Furthermore, at temperature 400C and concentrated sulphuric acid of 12 M, the titanium dioxide produced is 32.3% and 11.5% for rutile and anatase, respectively.

The Effect of Micro-Sized Carbon Material Mass Variation from Coconut Shell Leftovers Reinforced with Filter Paper towards Fe Filtration of Mataram Canal Water Nur Baeity Andriyani; Buky Wahyu Pratama; Irnawati Widya Hastuti; Wipsar Sunu Brams Dwandaru
Jurnal Fisika dan Aplikasinya Vol 13, No 3 (2017)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

The aim of this research is to determine the effect of micro-sized carbon material mass variation from coconut shell leftovers or wastes reinforced with filter paper towards Fe filtration of Mataram canal water. Preparationand synthesis of the micro-sized carbon material is conducted via liquid sonication exfoliation (LSE) method using two main equipments, i.e.: a blender and a self-custom made piezoelectric-based ultrasonication apparatus, and then incorporated into a simple filtration apparatus. UV-Vis spectroscopy characterization is done on the micro-sized carbon material solution, while atomic absorption spectroscopy (AAS) is done on samplesof Mataram canal water before and after Fe filtration with mass variation of the micro-sized carbon material. The UV-Vis results show that increasing the mass of the micro-sized carbon material increases the absorbancevalues at the same wavelength. The AAS results confirm that the greater the mass of the micro-sized carbon material the smaller the Fe content inside the water samples after filtration. The lowest Fe content of 0.016 ppm is obtained for 3 grams of the micro-sized carbon material.

Mapping of physics problem-solving skills of senior high school students using PhysProSS-CAT Edi Istiyono; Wipsar Sunu Brams Dwandaru; Revnika Faizah
REID (Research and Evaluation in Education) Vol 4, No 2 (2018): December
Publisher : Program Pascasarjana Universitas Negeri Yogyakarta & HEPI

Evaluation using computerized adaptive tests (CAT) is an alternative to paper-based tests (PBT). This study was aimed at mapping physics problem-solving skills using PhysProSS-CAT on the basis of the item response theory (IRT). The study was conducted inSleman Regency, Yogyakarta, involving 156 students of Grade XI of senior high school. Sampling was done using stratified random sampling technique. The results of the study show that the PhysProSS-CAT is able to accurately measure physics problem-solving skills. Students’ competences in physics problem solving can be mapped as 6% of the very high category, 4% of the high category, 36% of the medium category, 36% of the low category, and 18% of the very low category. This shows that the majority of the students’ competences in physics problem solving lies within the categories of medium and low.

UV-VISIBLE OPTICAL ABSORBANCE OF GRAPHENE OXIDE IN COPPER IONIC LIQUID SYNTHESIZED VIA ELECTROCHEMICAL METHOD ASSISTED BY A COPPER COIL Wipsar Sunu Brams Dwandaru; Oktiana Lusi Priyani; Bagas Prakoso; Rhyko Irawan Wisnuwijaya; Iman Santoso; Arif Rahman
Spektra: Jurnal Fisika dan Aplikasinya Vol 3 No 2 (2018): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 3 Issue 2, August 2018
Publisher : Program Studi Fisika Universitas Negeri Jakarta

An optical absorbance study using Ultraviolet-Visible (UV-Vis) spectrophotometer device has been conducted on graphene oxide (GO) in copper (Cu) ionic liquid using electrochemical exfoliation combined with a direct current (DC) electrical circuit of copper coil given inside the electrolyte solution. The electrolyte solutions used are sulfuric acid (H2SO4) and chloride acid (HCl). The UV-Vis spectrum of the samples shows absorbance peaks at around 214 nm to 218 nm and shouldering peaks around 245 nm to 249 nm. The first peak corresponds to the existence of copper (Cu) ionic liquid in the solution, whereas the shouldering peak is related to the occurrence of GO material. A comparison between UV-Vis spectral of graphite in dimethylformamide (DMF) and GO in Cu ionic liquid in DMF resulted in the existence of a blue shift which signifies the production of Cu ionic liquid from the Cu coils inside the electrolyte solution. Increasing the concentration of the solution increases the absorbance peaks. Furthermore, raising the number of loops yields in the increase of the absorbance value at the first peaks that show Cu ionic liquid, but tends to decrease the absorbance value of the shouldering peaks of the GO material.

Co-Authors Aang Zainul Abidin Adiella Zakky Juneid Adiella Zakky Juneid Aditia Pramudia Sunandar Adiwinoto, Nur Rahmatika Agisna Nursita AGUS PURWANTO Agus Sugiarto Alfarisa, Suhufa Alviana, Jaynis Dhifa Aminuyati Anak Agung Gede Sugianthara Andriani, Nur Baeity Annisa Indriawati Aprilia, Ananda Aprina Defianti Aprlilia, Ananda Arif Rahman Aris Kurniawan Ariswan Ariswan Ariswan Ariswan Ariswan, Ariswam Asya Nailul Fauziah Athi' Nur Auliati Rahmah Atina - Atina, Atina Ayub, Made Rai Shanti Aziz, Khafidh Nur Azzahra Qurrata A’yun Bagas Prakoso Balqist, Eggydhia Ananda Rania Bambang Ruwanto Bambang Ruwanto, Bambang Bian Itsna Ashfa Al Ashfiya Bob Widodi Buky Wahyu Pratama Danvi Sekartaji Denny Darmawan Denny Darmawan Dhiarni, Yutisa Is Dian Puspita Eka Putri Dian Puspita Eka Putri Duden Saepuzaman, Duden Dwi Wahyu Nugroho Dyah Silviana Sari Edi Istiyono Elisabeth Pratidhina Elisabeth Pratidhina Emi Kurnia Sari Eryuni Setyani Fajrul Falah Fauzi, Fika Febriani Febriani Febriani Fika Fauzi Fitria Ayu Sulistiani Fitria Irawan Fitria Wulandari Galih Ramadhan Alwaasith Hari Sutrisno Haris Suhendar Hastuti, Irnawati Widya Heru Kuswanto Hidayatullah, Abdul Rosyid Husna, Salsabila Iman Santoso Iman Santoso Indriawati, Annisa Insih Wilujeng Irnawati Widya Hastuti Ishafit Juli Astono Juliana Megawati Simanjuntak Julius Elfino Jumadi Jumadi Jumadi Jumadi Kartika Aulia Widyani Khasanah, Ayu Hana Umi Laeli, Silvia Laila Nur Hanif Lilik Kurniawan Lilis Misnawati Listari, Eka Sentia Ayu Millah, Syari Fatul Muhammad Ikrom Mustofa, Nisrina Hasna Nasir, Muhammad Hilmi Niken Kristiyanti nosiyosa judenori Nugan Tadeko Nunung Fadilah Nur Baeity Andriyani Nur Kadarisman Nurohman, Yosi Nurul Miftakhul Janah Nurul Taufiqu Rochman Oktiana Lusi Priyani Parmin Lumbantoruan Permana, Hilmi Ardian PHATMA DIAN PRATIWI Pratama, Buki Wahyu Pratama, Buky Wahyu Pujianto Pujianto Purwanto, Agus Purwoko Haryadi Santoso Putri Anjarsari Putri, Sabrina Elysia R. A. Adipurno R. Yosi Aprian Sari Rachman, Anisyah Raden Wisnu Murti Sulaindra Radyum Ikono Rahmatullah Rahmatullah Ratnawati Retnowati, Rahayu Dwisiwi Sri Revnika Faizah Rhyko Irawan Wisnuwijaya Rhyko Irawan Wisnuwijaya Rhyko Irawan Wisnuwijaya Rika Noor Safitri Rini Septiana Rita Prasetyowati Safitri, Rika Noor Sari, Dyah Silviana Sari, Emi Kurnia Sari, Riska Arsita Septiana, Rini Silvia Nur Fatmawati Siti Choerotun Nisa’ SL, Deby Grace Sudarsono Sukardiyono Sukardiyono Sunardi Rahman Suparno Suparno Suparno Suparno Suparno Suparwoto Suparwoto Surya Jatmika Susanto, Duwi Tessa, Adhis Tito Prastyo Rahman Toni Hasmedi Toruan, Parmin Lumban Trisonia Fitria Tullah, Hidayat Ulfa Aulia Syamsuri Utami, Ridho Warsono Warsono Warsono Warsono Warsono Watuna, Monica Ananda Wiratama, Pradeo Putra Wisnuwijaya, Rhyko Irawan Yosi Nurohman Yusman Wiyatmo Yusron, Eri Yuwana Widada Zakwandi, Rizki

Title

Found 72 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 72 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 72 Documents
Search