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Perancangan Generator Ultrasonik Untuk Membunuh Bakteri Escherichia coli (E. coli) I Made Satriya Wibawa; I Ketut Putra
Kappa Journal Vol 6 No 2 (2022): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v6i2.6886

Telah dirancang generator ultrasonik sebagai pembunuh bakteri Escherichia coli (E. coli). Range frekuensi yang dihasilkan oleh generator ultrasonik ini berkisar antara 50 kHz - 65 kHz. Dari hasil pengamatan kematian bakteri E. coli yang ditimbulkan akibat radiasi gelombang ultrasonik terhadap variasi jarak dan frekuensi yang digunakan pada kerapatan 10-8 cfu/ml (coloni forming unit/ml) diperoleh persentase rata-rata kematian bakteri E. coli yang ditimbulkan meningkat apabila jarak radiasi semakin dekat dan frekuensi yang digunakan tinggi. Bakteri E. coli setelah diradiasi dengan gelombang ultrasonik mengalami kelainan sel yaitu terjadi pengecilan bentuk sel, dinding selnya pecah dan mengalami lysis.

Relokasi Hiposenter Gempabumi dengan Menggunakan Metode Double Difference Wilayah Bali dan Sekitarnya Devi Irma Putri; I Ketut Sukarasa; Rudy Darsono; Winardi Tjahyo Baskoro; Ni Nyoman Wendri; I Made Satriya Wibawa
BULETIN FISIKA Vol 25 No 2 (2024): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2024.v25.i02.p04

A study on the relocation of earthquake hypocenters using the Double Difference method has been conducted in Bali and its surrounding areas. This research was carried out at the Center for Meteorology, Climatology, and Geophysics Region III Denpasar. The purpose of this study is to find out the distribution of earthquake hypocenters before and after the relocation and to know the continuity of earthquake hypocenters in the Bali region. The data used are arrival time data of 1,815 earthquake events from January 1, 2014 to December 31, 2023, and data from 26 earthquake recording stations. The relocation method applied is the Double Difference method, which is processed with ph2dt and HypoDD. The relocation that has been carried out shows a good hypocenter position which is characterized by a residual value of travel time that is close to 0. The distribution of the earthquake hypocenter in the Bali area before the relocation spread throughout the region and after the relocation, the position of the hypocenter was getting closer to the source of the earthquake, namely in the subduction zone under the Bali area as shown in the cross-section results. In addition, based on the results of the analysis of the hypocenter of the earthquake after relocation, it was found that the trend of the hypocenter continued toward the subduction subduction zone.

The Role of Deliberative Democracy in Systemic-Structural Transformation for Sanitation Issues Sa'at, Meutia Ramadhani; Wibawa, Satriya
Jurnal Paradigma Vol 28, No 2 (2024): July 2024
Publisher : Fakultas Ilmu Sosial dan Ilmu Politik UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/paradigma.v28i2.11593

This research explores the complex dimensions of sanitation issues, particularly focusing on the systematic structural transformation needed for long-term and resilient changes in achieving equitable access to clean water and sanitation. Utilizing a qualitative descriptive approach, the study draws insights from the case of West Java, exemplifying challenges arising from geographical conditions, industrial waste exposure, and limited public understanding. Emphasizing the importance of inclusive policies, the research underscores the significance of participatory deliberative democracy, as advocated by Jurgen Habermas, in addressing sanitation complexities. The findings reveal the necessity for a holistic and sustainable approach to sanitation policies, actively involving marginalized communities in decision-making processes. By examining successful grassroots initiatives and adopting a collaborative, affordable, and socially aware model, the study recommends a comprehensive strategy to integrate sanitation improvements into broader poverty alleviation and property security agendas. Ultimately, the research emphasizes the importance of societal collaboration, affordable solutions, and a nuanced understanding of socio-economic issues in addressing sanitation challenges in informal settlements.

PERANCANGAN ALAT UKUR KELEMBABAN TANAH MENGGUNAKAN CAPACITIVE SOIL MOISTURE SENSOR BERBASIS ANDROID Tri Jaya Maghuna, Komang; Wibawa, I Made Satriya; Suardana, Putu; Widagda, I. G. A; Trisnawati, Ni Luh Putu; Kasmawan, I Gde Antha
Kappa Journal Vol 8 No 2 (2024): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i2.25122

A soil moisture measuring instrument has been designed and created using an Android-based capacitive soil moisture sensor. The design of a soil moisture measuring instrument was made to understand how to design, how it works, and the results of calibration. The process of calibrating and applying the design tool is carried out by comparing the results of soil moisture measurements between the design tool and the reference tool. The calibration itself was carried out using black sand soil into which 0 ml, 10 ml, 30 ml, 50 ml and 70 ml of water were poured periodically. The reference tool used is the soil moisture meter pH tester VT05 with type ZD-05. Data collection is carried out by inserting a capacitive soil moisture sensor into the soil. There are five types of soil used during application, namely white sand soil, black sand soil, limestone soil, clay soil and humus soil. The results of calibration using linear regression between the design tool and the reference tool obtained a gradient value m of 0.9643, close to 1. The coefficient of determination value obtained during calibration was 0.9983, so the level oflinearity between the design tool and the reference tool was 99.83%. The results of applying linear regression between the design tool and the reference tool obtained a gradient value m of 1.0041, close to 1. The coefficient of determination () obtained when applying was 0.9982, so the level of linearity between the design tool and the reference tool was 99.82%. From the results of the calibration and application of the tool, it shows that the tool design has good validity (precise accuracy).

Analisis Laju Dosis Radiasi Neutron Pada Pekerja Radiasi Menggunakan Surveymeter di Instalasi Radioterapi Ida Bagus Putu Priastana Bawa; Ni Nyoman Ratini; Wayan Balik Sudarsana; Gusti Ngurah Sutapa; I Made Satriya Wibawa; I Gde Antha Kasmawan; Rozi Irhas
Kappa Journal Vol 8 No 3 (2024): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i3.27296

The research was carried out at the Radiotherapy Installation at Hospital Prof. Dr. I.G.N.G. Work with the aim of knowing the value of the neutron radiation dose rate at the maximum point after the irradiation is carried out and knowing the value of the neutron radiation dose rate to radiation workers based on the Dose Limit Value permitted by BAPETEN. The research was carried out by measuring the neutron radiation dose rate using a neutron surveymeter at 7 different points with a photon beam of 10 MV energy. At point A, the average value of the neutron radiation dose rate at the maximum point was 6618.87 ± 959.50 µSv/h, at point B it was 1586.99 ± 113.95 µSv/h, at point C it was 1599.90 ± 210.98 µSv/h, at point D it is 1236.83±113.94 µSv/h, at point E it is 297.48±41.79 µSv/h, at point F it is 23.69±3.14 µSv/h h and at point G of 0.54 ± 0.44 µSv/h. Then the value of the equivalent dose rate of neutron radiation at each point is obtained, namely, at point A it is 1.8 µSv/h, at point B 3.2 µSv/h, at point C 3.5 µSv/h, at point D 2 .3 µSv/h, at point E 2.3 µSv/h, at point F 2 µSv/h and at point G 1.9 µSv/h, then the equivalent dose rate value is compared with 1/2 NBD of radiation workers of 5 µSv /h, then the equivalent dose rate value is still below 1/2 of the NBD of radiation workers and the SPO that applies at the Radiotherapy Installation at Hospital Prof. Dr. I.G.N.G. Ngoerah is indeed safe for radiation workers.

CYBERSECURITY CHALLENGES IN THE MALACCA STRAITS: INDONESIA’S STRATEGIC APPROACH THROUGH BSSN AND IMIC Rizaldy, Robby; Wibawa, Satriya; Sudirman, Arfin
JWP (Jurnal Wacana Politik) Vol 10, No 2 (2025): JWP (Jurnal Wacana Politik) May
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jwp.v10i2.57343

The government’s attention is anticipated to be directed towards the proper management of maritime cybersecurity in the Malacca Strait, given the intricate nature of the dangers involved. This will assist Indonesia’s objectives as a Global Maritime Axis. Indonesia has created institutional synergies through BSSN and BAKAMLA to ensure that daily operations in this area are at the forefront of minimizing maritime cybersecurity threats. Using theories of cybersecurity, maritime security, and security cooperation, this article aims to understand the cooperation between these institutions, namely BSSN through BDS and BAKAMLA with IMIC, in the field of maritime security, including the mitigation of maritime cybersecurity threats that jeopardize national sovereignty. The essay uses a descriptive qualitative method to show how Indonesia is working hard to merge these two agencies so they can better address maritime cybersecurity in Indonesian waters and this paper was validated by interviewing several actors or strategic position holders in IMIC and BSSN who play a direct role in the technical field. This involves working together to address marine cybersecurity concerns in the “Nusantara Jaya,” or Malacca Strait. Though decisions from the Indonesian House of Representatives (DPR RI) are still pending, in practice, collaboration between these government entities is dependent on the legal frameworks provided by Indonesian laws and regulations controlling marine security, safety, and law enforcement. After these frameworks are put into effect, it is envisaged that they will make maritime management and operations clearer and avoid redundancies between the pertinent agencies.

Distribution of Radiation Doses Received by Organs at Risk in Cervical Cancer Using Intracavitary Brachytherapy Technique Anandika Putra, I Made Raditya; Sutapa, Gusti Ngurah; Kasmawan, I Gde Antha; Ratini, Ni Nyoman; Wibawa, I Made Satriya; Putra, I Ketut
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.29017

A study entitled Distribution of Radiation Doses Received by Organs at Risk in Cervical Cancer Using Intracavitary Brachytherapy Technique has been conducted. The study was conducted at the Radiotherapy Sub-Installation of Prof. Dr. I.G.N.G Ngoerah Hospital with the aim of determining the distribution of doses received by High Risk Clinical Target Volume (D2cc) and Organs at Risk (D90). Determining the distribution of doses received by High Risk Clinical Target Volume (D2cc) and Organs at Risk (D90) in cervical cancer patients is still within the recommended limits in ICRU Report 89. This study used ionizing radiation by inserting radioactive cobalt-60 using internal radiotherapy techniques, namely intracavitary brachytherapy. Before the irradiation process is carried out, there is a planning stage or Treatment Planning System (TPS). The reference for this research standard is for HRCTV of 95% -107% and for OAR bladder ≤80% rectum ≤75%. The average percentage of dose distribution received by HRCTV was 104.2% which is equivalent to 7.2 Gy which is still within the range of 95%- 107%, in the bladder it was 69.4% which is equivalent to 5.Gy which is still below the value ≤80%, and in the rectum it was 57% which is equivalent to 4.1 Gy which is still below the value ≤75%. The dose distribution value in HRCTV and OAR was still within the tolerance limit listed in the recommended value in GEC-ESTRO-ABS, and ICRU Report 89.

KEAMANAN SIBER INDONESIA ERA PEMERINTAHAN JOKO WIDODO BERDASARKAN PERSEKTIF SEKURITISASI Wicaksono, Raden Agung Prio; Wibawa, Satriya
Indonesian Perspective Vol 10, No 1 (2025): (Januari-Juni 2025)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ip.v10i1.68085

Keberadaan pengguna internet yang masif di Indonesia menjadi sebuah tantangan yang serius bagi Pemerintah untuk menjaga keamanan dalam ruang siber Indonesia. Badan Sandi dan Siber Negara menunjukkan dalam 3 tahun terakhir telah terjadi lebih dari 1 miliar serangan siber terhadap Indonesia. Diantara masifnya serangan tersebut, kemunculan serangan siber oleh Bjorka di tahun 2022 dan serangan pada Pusat Data Nasional Sementara di tahun 2024 menunjukkan celah keamanan bagi Pemerintah Indonesia. Artikel ini Konsep Keamanan Siber dan Teori Sekuritisasi Buzan yang dikembangkan oleh Hansen dan Nissenbaum digunakan untuk memahami upaya pemerintah Indonesia di bawah kepemimpinan Joko Widodo dalam memosisikan dan merespons ancaman siber melalui perspektif siber. Melalui pendekatan penelitian kualitatif deskriptif, tulisan ini mencoba untuk menggambarkan dinamika keamanan siber Indonesia, penerapan proses sekuritisasi pada ruang siber, dan implikasi strategi keamanan siber pada ruang siber Indonesia. Temuan pada tulisan menunjukkan Indonesia telah memosisikan isu ancaman siber sebagai permasalahan keamanan yang cukup serius, namun belum sepenuhnya telah berhasil melakukan sekuritisasi secara penuh melainkan berada pada tahap Politisasi menuju Sekuritisasi.

KEAMANAN SIBER INDONESIA ERA PEMERINTAHAN JOKO WIDODO BERDASARKAN PERSEKTIF SEKURITISASI Wicaksono, Raden Agung Prio; Wibawa, Satriya
Indonesian Perspective Vol 10, No 1 (2025): (Januari-Juni 2025)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ip.v10i1.68085

Keberadaan pengguna internet yang masif di Indonesia menjadi sebuah tantangan yang serius bagi Pemerintah untuk menjaga keamanan dalam ruang siber Indonesia. Badan Sandi dan Siber Negara menunjukkan dalam 3 tahun terakhir telah terjadi lebih dari 1 miliar serangan siber terhadap Indonesia. Diantara masifnya serangan tersebut, kemunculan serangan siber oleh Bjorka di tahun 2022 dan serangan pada Pusat Data Nasional Sementara di tahun 2024 menunjukkan celah keamanan bagi Pemerintah Indonesia. Artikel ini Konsep Keamanan Siber dan Teori Sekuritisasi Buzan yang dikembangkan oleh Hansen dan Nissenbaum digunakan untuk memahami upaya pemerintah Indonesia di bawah kepemimpinan Joko Widodo dalam memosisikan dan merespons ancaman siber melalui perspektif siber. Melalui pendekatan penelitian kualitatif deskriptif, tulisan ini mencoba untuk menggambarkan dinamika keamanan siber Indonesia, penerapan proses sekuritisasi pada ruang siber, dan implikasi strategi keamanan siber pada ruang siber Indonesia. Temuan pada tulisan menunjukkan Indonesia telah memosisikan isu ancaman siber sebagai permasalahan keamanan yang cukup serius, namun belum sepenuhnya telah berhasil melakukan sekuritisasi secara penuh melainkan berada pada tahap Politisasi menuju Sekuritisasi.

INTRAUTERINE FETAL DEATH ASSOCIATED WITH PRETERM PREMATURE RUPTURE OF MEMBRANES AND GASTROSCHISIS FETUS: A CASE REPORT Wibawa, Satriya; Kornia, Rizky
Jurnal Kesehatan Terpadu Vol. 8 No. 1 (2024): Jurnal Kesehatan Terpadu
Publisher : LPPM Universitas Dhyana Pura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36002/jkt.v8i1.2995

Kematian janin dalam rahim (KJDR) penyumbang angka kematian perinatal terbesar yang dapat disebabkan oleh gastroschisis dan ketuban pecah dini (KPD) preterm. KPD preterm pada fetus dapat menyebabkan chorioamnionitis yang pada akhirnya menimbulkan kematian pada janin. Defek pada dinding anterior abdomen dapat menyebabkan kematian janin dikarenakan penekanan tali pusar akibat dilatasi usus akut. Gastroschisis menyebabkan KJDR adalah kejadian yang langka yakni berkisar 4.5%. Wanita berusia 25 tahun, G2P1A0 usia kehamilan 28 minggu datang ke RS Puri Bunda Tabanan dengan keluhan keluar darah disertai dengan nyeri perut dan gerak janin yang menghilang sejak 1 hari sebelum masuk RS. 3 minggu sebelumnya, pasien sempat dirawat inap di RS lain dengan diagnosis KPD preterm Pasien tidak pernah melakukan pemeriksaan USG sebelumnya dikarenakan pasien seorang pedagang dengan penghasilan yang rendah. Pemeriksaan obstetri didapatkan tanda inpartu, presentasi kaki dan ketuban negatif. Hasil USG obstetri didapatkan denyut jantung janin menghilang, skor AFI 2 dan ditemukan leukositosis dari pemeriksaan lab darah. Dilakukan sectio cesaria dan ditemukan bayi meninggal dengan gastroschisis maserasi tingkat II. KPD preterm dan gastroschisis berkaitan dengan terjadinya KJDR sehingga diperlukan deteksi dini dan penatalaksanaan komprehensif yang tepat. Gastroschisis seharusnya dapat ditegakkan secara prenatal menggunakan USG obstetri, sehingga penting bagi klinisi untuk melakukan deteksi dini yang tepat agar dapat mencegah morbiditas dan mortilitas ibu dan janin.

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