Jurnal Online Universitas Pekalongan
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Efektivitas Formula Cair Air Cucian Beras dan Formula Padat Tepung Tapioka Berbasis Bacillus sp. BM1 dan BM3 dalam Meningkatkan Pertumbuhan Bawang Merah Varietas Bima Brebes : Effectiveness of Liquid Rice Washing Water Formulation and Solid Tapioca Flour Formulation Based on Bacillus sp. BM1 and BM3 in Enhancing the Growth of Shallot (Allium ascalonicum L.) Variety Bima Brebes
Get PDFABSTRAK Penelitian ini bertujuan untuk mengetahui efektivitas formula cair air cucian beras dan formula padat tepung tapioka berbasis Bacillus sp. BM1 dan BM3 dalam meningkatkan pertumbuhan bawang merah varietas Bima Brebes. Lokasi penelitian di Desa Linggasari, Kecamatan Kembaran, Kabupaten Banyumas. Data yang digunakan berupa data primer yang diambil selama waktu penelitian berlangsung dari bulan Mei 2024 – Oktober 2024. Penelitian ini dilakukan dengan menggunakan rancangan acak kelompok (RAK) non faktorial yang terdiri atas 5 perlakuan, yaitu K (kontrol), A (formula cair air cucian beras Bacillus sp. BM1), B (formula cair air cucian beras Bacillus sp. BM3), C (formula padat tepung tapioka Bacillus sp. BM1), dan D (formula padat tepung tapioka Bacillus sp. BM1). Setiap perlakuan akan diulang sebanyak 5 kali, sehingga terdapat 25 petak perlakuan. Jumlah tanaman sampel setiap perlakuan adalah 15, sehingga terdapat 375 tanaman. Data yang berdistribusi normal dan homogen dianalisis dengan uji ragam atau analysis of variance (ANOVA). Apabila berpengaruh nyata diuji lanjut dengan BNT pada taraf 5%. Menggunakan aplikasi Ms. Excel Office 2021, SPSS 27, dan aplikasi DSAASTAT 1.101. Hasil penelitian ini menunjukkan bahwa formula biopestisida Bacillus sp. BM1, BM3 baik formula cair air cucian beras dan padat tepung tapioka mampu sebagai pemacu pertumbuhan pada tanaman bawang merah Bima Brebes.
Kata kunci: Air Cucian Beras; Tepung Tapioka; Bacillus sp.; Bawang Mera
Potensi Bakteri Pelarut Zn dari Rizosfer Padi : Potential of Zn Solubilizing Bacteria from Rice Rizosphere
Get PDFPenelitian ini bertujuan untuk mengisolasi dan menyaring bakteri pelarut Zn (ZSB) dari rhizosfer tanaman padi (Oryza sativa L.) serta menguji efisiensinya dalam melarutkan tiga bentuk senyawa Zn, yaitu ZnO, ZnCO₃, dan ZnS secara kualitatif. Sampel tanah dikoleksi dari rizosfer padi, diisolasi menggunakan medium Mineral Salt Medium (MSM), dan diuji kemampuan pelarutan Zn melalui pembentukan zona bening di sekitar koloni. Sebanyak sepuluh isolat diisolasi, Pelarutan Zn tertinggi (4,5) diukur untuk isolat J2O1 ketika terpapar pada kultur media MSM yang dimodifikasi ZnO, sedangkan ZnS menunjukkan pelarutan Zn terendah (1,38) oleh ZSB. Selain itu, sepuluh isolat bakteri pelarut Zn juga menunjukkan sifat-sifat pemacu pertumbuhan tanaman (plant-growth-promoting, PGP), termasuk kemampuan fiksasi nitrogen, produksi asam asetat indol, pelarutan fosfat. Tiga isolat terpilih (J105, J107, dan K201) menunjukkan efisiensi pelarutan Zn pada lebih dari satu bentuk senyawa Zn tidak larut pada seng oksida (ZnO), seng karbonat (ZnCO3 ), dan seng sulfida (ZnS). Karakteristik ini menunjukkan bahwa isolat terpilih memiliki potensi sebagai biofertilizer pelarut Zn yang efektif untuk meningkatkan ketersediaan Zn dalam tanah sawah.
 
Literature Review Metode Penilaian Sisa Umur Heat Recovery Steam Genearator (HRSG) Berdasarkan Standar American Society Of Mechanical Engineers (ASME)
No full textThe role of power plants is crucial in supporting various sectors, particularly in oil and gas exploration. One of the key components, the Heat Recovery Steam Generator (HRSG), plays a vital role in combined cycle power plants. However, as HRSG operates, several risks arise, such as performance degradation due to factors like corrosion, fouling, and thermal fatigue. This review aims to analyze studies conducted in Indonesia on the remaining life assessment methods of HRSG based on the American Society of Mechanical Engineers (ASME) standards. The literature review was conducted by collecting and analyzing references from ASME standards through national journals found via Google Scholar, published between 2018 and 2024. The data includes the methods and analyses used in the remaining life assessment of HRSG. The assessment methods for HRSG remaining life include corrosion rate calculation, stress rupture testing using the Larson-Miller Parameter (PLM), material degradation analysis, the Risk-Based Inspection (RBI) approach, as well as pipe thickness evaluation and allowable working pressure assessment. There is no single method that can comprehensively provide an effective HRSG remaining life assessment. Each method has its own advantages and limitations.
Keywords: Heat Recovery Steam Generator, remaining life assessment, ASME standards, corrosion, Risk-Based Inspection, Larson-Miller Parameter.Latar belakang: Peran pembangkit listrik merupakan merupakan hal penting untuk mendukung kegiatan di berbagai sektor khususnya bagi sektor ekplorasi minyak dan gas. Salah satu komponen penting seperti, Heat Recovery Steam Generator (HRSG) merupakan komponen penting dalam sistem pembangkit listrik berbasis siklus kombinasi (combined cycle power plant). Seiring dengan beroperasinya HRSG, terdapat beberapa risiko seperti penurunan kinerja akibat faktor-faktor seperti korosi, fouling, dan thermal fatigue.
Tujuan: Review ini bertujuan untuk menganalisis beberapa penelitian di Indonesia tentang metode penilaian sisa umur Heat Recovery Steam Genearator (HRSG) berdasarkan Standar American Society Of Mechanical Engineers (ASME).
Metode: Literature review ini dilakukan dengan mengumpulkan dan menganalisis berbagai referensi dari standar ASME berdasarkan jurnal nasional melalui mesin pencarian Google scholar yang diterbitkan antara tahun 2018 hingga 2024. Data yang digunakan mencakup metode dan analisis yang digunakan dalam penilaian sisa umur Heat Recovery Steam Generator.
Hasil: Metode penilaian sisa umur HRSG terdiri dari perhitungan laju korosi, uji stress rupture dengan Parameter Larson-Miller (PLM), analisis degradasi material, pendekatan Risk Based Inspection (RBI), serta evaluasi ketebalan pipa dan tekanan kerja yang diizinkan.
Kesimpulan: Tidak ada metode tunggal yang mampu memberikan gambaran lengkap terhadap penilaian sisa umur HRSG yang efektif. Setiap metode memiliki kelebihan dan keterbatasan masing-masing.
Kata Kunci : Heat Recovery Steam Generator, Penilaian Sisa Umur, ASME Standard, Korosi, Risk-Based Inspection, Larson-Miller Parameter
Eksplorasi Ethnomatematika dan Nilai Pendidikan Karakter Pada Ornamen Masjid Gedhe Kauman
No full textCultural mathematics is an approach to designing mathematics that is relevant and closely related to cultural communities. Learning that focuses on cultural aspects becomes more interesting and enjoyable due to socio-cultural constructions, where mathematics has been integrated in human history and activities. This approach to learning that combines math and culture is known as ethnomathematics. One of the cultural and historical places is the Gedhe Kauman Mosque in Yogyakarta. This research aims to explore mathematical concepts based on the ornaments in the Kauman Gedhe Mosque and the value of character education for students. This research is qualitative research using ethnographic approach. Data were collected through interviews, field notes, observations, literature review, and documentation. Based on the results of the study, it was found that the concepts of mathematics in the Gedhe Kauman Mosque building in the form of flat geometry, geometric transformation, and character education values. This can be found in the ornaments of the gate, gate, front door of the mosque, side foundation of the foyer building, foundation of the main building, fort, main pillar of the foyer building, and the main door. Then character values include selflessness, hard work, responsibility, fortitude and wisdom, leader, and confidence
Patients, Knowledge, Nursing Pro description of NURS PROFESSIONAL STUDENTS\u27 KNOWLEDGE ABOUT INDEPENDENT NURSING INTERVENTIONS IN PATIENTS INTENSIVE CARE UNIT DR. T.C. HILLER MAUMERE: GAMBARAN PENGETAHUAN MAHASISWA PROFESI NERS TENTANG INTERVENSI MANDIRI KEPERAWATAN PADA PASIEN INTENSIVE CARE UNIT RSUD dr. T.C. HILLLERS MAUMERE
No full textBackground: Independent nursing interventions are actions carried out by nurses without direct instructions from medical personnel, which aim to improve the quality of nursing care, especially for patients treated in the Intensive Care Unit (ICU). Nursing students as prospective professional nurses are expected to have adequate knowledge regarding independent interventions in clinical practice Objective. This study aims to determine the overview of nursing students\u27 knowledge about independent nursing interventions in ICU patients at dr. T.C. Hillers Maumere Regional General Hospital. This type of research is descriptive with a quantitative approach. The research sample was taken by total sampling from all nursing students who are currently undergoing practice in the ICU. Data were collected using a closed questionnaire and analyzed descriptively. The results: Level of knowledge of nursing professional students regarding independent nursing interventions in the ICU Results and Discussion: he results showed that the majority of respondents had a good level of knowledge (98%) regarding independent nursing interventions, including interventions for pain management, prevention of pressure ulcers, meeting nutritional needs, and psychological support. Conclusion: These results are expected to be used as material for evaluating and strengthening the nursing professional education curriculum to emphasize the mastery of independent interventions appropriate to the critical condition of patients in the ICU.Intervensi mandiri keperawatan merupakan tindakan yang dilakukan oleh perawat tanpa instruksi langsung dari tenaga medis, yang bertujuan untuk meningkatkan kualitas asuhan keperawatan, khususnya pada pasien yang dirawat di ruang Intensive Care Unit (ICU). Mahasiswa profesi ners sebagai calon perawat profesional diharapkan memiliki pengetahuan yang memadai terkait intervensi mandiri dalam praktik klinis. Penelitian ini bertujuan untuk mengetahui gambaran pengetahuan mahasiswa profesi ners tentang intervensi mandiri keperawatan pada pasien ICU di RSUD dr. T.C. Hillers Maumere. Jenis penelitian ini adalah deskriptif dengan pendekatan kuantitatif. Sampel penelitian diambil secara total sampling dari seluruh mahasiswa profesi ners yang sedang menjalani praktik di ruang ICU. Data dikumpulkan menggunakan kuesioner tertutup dan dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa 98% responden memiliki tingkat pengetahuan yang baik mengenai intervensi mandiri keperawatan, meliputi intervensi untuk manajemen nyeri, pencegahan ulkus dekubitus, pemenuhan kebutuhan nutrisi, dan dukungan psikologis. Hasil ini diharapkan dapat menjadi bahan evaluasi dan penguatan kurikulum pendidikan profesi keperawatan agar lebih menekankan penguasaan intervensi mandiri yang sesuai dengan kondisi kritis pasien di ICU.
 
PENGARUH KONSENTRASI ETANOL TERHADAP AKTIVITAS ANTIBAKTERI EKSTRAK DAUN LILI PARIS (Chlorophytum comosum)
No full textStaphylococcus aureus is a pathogenic bacterium that frequently causes serious infections, such as skin infections, pneumonia, and sepsis. The increasing resistance to conventional antibiotics has prompted the search for alternative therapies derived from natural sources. Spider plant (Chlorophytum comosum) leaves are known to contain bioactive compounds such as flavonoids, saponins, and terpenoids, which have potential antibacterial properties. This study aims to determine the effect of varying ethanol concentrations (40%, 70%, and 96%) on the antibacterial activity of spider plant leaf extracts against Staphylococcus aureus. Extraction was carried out using the maceration method with ethanol solvents at concentrations of 40%, 70%, and 96%. Each extract underwent phytochemical screening. Antibacterial activity was tested using the well diffusion method against Staphylococcus aureus ATCC 25923. The inhibition zones were measured using a caliper. Data were analyzed using normality and homogeneity tests, one-way ANOVA, and Tukey’s post hoc test. Phytochemical screening results showed that the 40% ethanol extract contained only flavonoids and tannins, while the 70% and 96% ethanol extracts contained flavonoids, terpenoids, tannins, and saponins. Antibacterial testing showed that the 70% ethanol extract produced the largest inhibition zone (9.75 mm), followed by the 96% ethanol extract (7.25 mm), and the 40% ethanol extract (6.3 mm). ANOVA results indicated significant differences between groups (p < 0.05), and the post hoc test showed that the 70% ethanol extract differed significantly from the other two groups. Ethanol 70% was the most effective solvent for extracting antibacterial compounds from spider plant leaves, as it produced the highest antibacterial activity against Staphylococcus aureus. These results support the potential use of spider plant leaf extract as a natural antibacterial candidate.Staphylococcus aureus merupakan bakteri patogen yang sering menyebabkan infeksi serius, seperti infeksi kulit, pneumonia, dan sepsis. Meningkatnya resistensi terhadap antibiotik konvensional mendorong pencarian alternatif terapi dari bahan alam. Daun lili paris (Chlorophytum comosum) diketahui mengandung senyawa bioaktif seperti flavonoid, saponin, dan terpenoid yang berpotensi sebagai antibakteri. Penelitian ini bertujuan untuk mengetahui pengaruh variasi konsentrasi etanol (40%, 70%, dan 96%) terhadap aktivitas antibakteri ekstrak daun lili paris terhadap Staphylococcus aureus. Ekstraksi dilakukan dengan metode maserasi menggunakan variasi pelarut etanol yaitu 40%, 70%, dan 96%. Masing-masing ekstrak dilakukan skrining fitokimia. Uji aktivitas antibakteri dilakukan dengan metode difusi sumuran terhadap bakteri Staphylococcus aureus ATCC 25923. Zona hambat diukur menggunakan jangka sorong. Data dianalisis menggunakan uji normalitas, homogenitas, ANOVA satu arah, dan uji post hoc Tukey. Hasil skrining fitokimia menunjukkan bahwa ekstrak etanol hanya 40% mengandung flavonoid dan tanin, sedangkan pada ekstrak etanol 70% dan 96% mengandung flavonoid, terpenoid, tanin dan saponin. Hasil uji antibakteri menunjukan bahwa ekstrak etanol 70% menghasilkan zona hambat terbesar (9,75 mm), diikuti oleh ekstrak etanol 96% (7,25 mm) dan ekstrak etanol 40% (6,3 mm). Uji ANOVA menunjukkan adanya perbedaan signifikan antar kelompok (p < 0,05), dan uji post hoc menunjukkan bahwa ekstrak etanol 70% berbeda signifikan dibandingkan dua kelompok lainnya. Etanol 70% merupakan pelarut paling efektif dalam mengekstraksi senyawa antibakteri dari daun lili paris, karena menghasilkan aktivitas antibakteri tertinggi terhadap Staphylococcus aureus. Hasil ini mendukung pemanfaatan ekstrak daun lili paris sebagai kandidat antibakteri alami
HUBUNGAN TINGKAT PENGETAHUAN MAHASISWA TERHADAP RASIONALITAS PENGGUNAAN OBAT ANTIBIOTIK
Get PDFAntibiotics are among the most commonly used drugs to treat infections. However, their use is often accompanied by misunderstandings and a lack of knowledge regarding proper usage. Pharmacy students, as health science students who study medicines, are expected to have a good understanding in order to provide accurate information about drugs within their community. The purpose of this study is to determine the level of knowledge about antibiotics among pharmacy students at the University of Pekalongan. The method used in this study was a questionnaire distributed using random sampling, involving 108 student respondents. Based on the results, the level of respondents\u27 knowledge was categorized as good in 77.6% of the participants.
Keywords: Knowledge, Pharmacy Students, Medication Use, AntibioticAntibiotik merupakan obat yang paling sering digunakan untuk mengatasi penyakit akibat infeksi. Namun, pada penggunaannya masih banyak yang keliru dan kurangnya pemahaman terkait penggunaan antibiotik. Mahasiswa Farmasi merupakan mahasiswa kesehatan yang mempelajari tentang obat sehingga diharapkan memiliki pengetahuan yang baik untuk memberikan informasi tentang obat di lingkungannya. Tujuan dari penelitian ini adalah untuk mengetahui tingkat pengetahuan tentang obat antibiotic di kalangan mahasiswa farmasi Universitas Pekalongan. Metode yang digunakan pada penelitian ini adalah menggunakan kuisioner yang disebarkan secara random sampling dengan jumlah responden 108 mahasiswa. Berdasarkan hasil penelitian menunjukan bahwa hasil tingkat pengetahuan responden pada kategori baik yaitu 77,6%
Kata kunci: Pengetahuan, Mahasiswa, Penggunaan Obat, Antibioti
Dialectics, Legality and Urgency of Criminal Law: A Critical Review in Indonesia
No full textThis study critically examines the dialectics, legality, and urgency of criminal punishment within the context of Indonesian criminal law. Using a normative juridical approach and qualitative analysis method, the research explores the development of criminal law thought in Indonesia, highlighting the limitations of the principle of legality in its application, and evaluating the urgency of using punishment as a means of social reform. The findings reveal that the development of criminal law in Indonesia demonstrates a dialectical relationship between morality, justice, and formal legality. The legalistic approach emphasizes legal certainty and strict interpretation of the rules, while the contextual approach prioritizes substantive justice by taking into account social and humanitarian factors. The principle of legality remains a fundamental tenet that protects individuals from abuse of power by requiring criminal laws to be clear, firm, and non-retroactive, serving as the foundation for the protection of human rights and the rule of law. However, the dynamics of modern crime and technological advancement often cause legal regulations to lag behind, posing challenges in law enforcement and creating potential ambiguity in application. In this context, the urgency of criminal punishment lies not only in the imposition of sanctions as retribution but also as an effort toward prevention and rehabilitation to maintain order, provide a deterrent effect, and protect society. Therefore, a balance is needed between legal certainty and flexibility in the application of criminal law to effectively and fairly respond to social changes. This includes more humane law enforcement, the strengthening of customary law, and education and training for law enforcement officers to carry out their duties inclusively and adaptively in a complex and pluralistic society.This study critically examines the dialectics, legality, and urgency of criminal punishment within the context of Indonesian criminal law. Using a normative juridical approach and qualitative analysis method, the research explores the development of criminal law thought in Indonesia, highlighting the limitations of the principle of legality in its application, and evaluating the urgency of using punishment as a means of social reform. The findings reveal that the development of criminal law in Indonesia demonstrates a dialectical relationship between morality, justice, and formal legality. The legalistic approach emphasizes legal certainty and strict interpretation of the rules, while the contextual approach prioritizes substantive justice by taking into account social and humanitarian factors. The principle of legality remains a fundamental tenet that protects individuals from abuse of power by requiring criminal laws to be clear, firm, and non-retroactive, serving as the foundation for the protection of human rights and the rule of law. However, the dynamics of modern crime and technological advancement often cause legal regulations to lag behind, posing challenges in law enforcement and creating potential ambiguity in application. In this context, the urgency of criminal punishment lies not only in the imposition of sanctions as retribution but also as an effort toward prevention and rehabilitation to maintain order, provide a deterrent effect, and protect society. Therefore, a balance is needed between legal certainty and flexibility in the application of criminal law to effectively and fairly respond to social changes. This includes more humane law enforcement, the strengthening of customary law, and education and training for law enforcement officers to carry out their duties inclusively and adaptively in a complex and pluralistic society
The Role Of Village Government In Increasing Participation In Paying Land And Building Tax In Jonggat District, Central Lombok Regency
No full textPenyelenggaraan Pemerintah Daerah yang berdasarkan Undang-Undang Nomor 23 Tahun 2014 memberikan implikasi berupa timbulnya kewenangan dan kewajiban bagi daerah untuk melaksanakan berbagai kegiatan pemerintahan secara mandiri, yang berarti memberikan peluang kepada daerah Kabupaten/Kota untuk menggali potensi daerah sehingga daerah mampu menyediakan dana yang digunakan untuk pembangunan dan kebutuhan lainnya yang bersumber dari Pendapatan Asli Daerah dan pendapatan daerah lainnya. Menurut Undang-Undang Nomor 33 Tahun 2004 tentang Perimbangan Keuangan antara Pemerintah Pusat dan Pemerintah Daerah, Pajak Bumi dan Bangunan untuk daerah digunakan sebagai modal dalam pembangunan guna meningkatkan kesejahteraan masyarakat Kabupaten Lombok. Jumlah kecamatan di Lombok tengah ada 12 kecamatan. penerimaan pajak bumi dan bangunan tahun 2023 Memberikan pemahaman pentingnya peran Pemerintah Kecamatan dalam meningkatkan partisipasi masyarakat dalam membayar pajak bumi dan bangunan. Adapun metodenya yang digunakan dalam penelitian ini adalah penelitian hukum empiris, dengan memadukan pola normatif dan emperis untuk menjawab permasalahan dalam peneltian ini. Hasil penelitian peran pemerintah Kecamatan Jonggat setiap pertemuan baik formal maupun non formal selalu memberikn advokasi kepada masyarakat untuk pentingnya membayar pajak serta hambatan karena berubahnya sistem pemungut pajak dari petugas pemungut pajak menjadi kadus di setiap desa perubahan ini berdasarkan Peraturan Daerah Nomor 1 Tahun 2024 sehingga agak terlalu panjang mekanisme pengembalian bukti lunas paja
The Effectiveness Of Pre-Trial Proceedings In Ensuring Control Mechanisms In The Investigation And Prosecution Process
No full textPretrial in the Indonesian criminal justice system aims to test whether or not the determination of suspects, detention, and confiscation by law enforcement officials is valid. However, the effectiveness of pretrial is often questioned, especially because the decision of a single judge in several cases is considered to violate the human rights of suspects and does not provide optimal legal certainty. This study aims to evaluate the effectiveness of a single judge in pretrial and to find alternative legal reforms that better guarantee the protection of human rights in the investigation and investigation stages. This research uses normative juridical method with statutory approach and case study on controversial pretrial decisions. The results showed that single judges in pretrial often have limitations in assessing the substance of the case as a whole, so that the resulting decisions are not always fair and can harm the suspect. In addition, there is legal uncertainty due to different interpretations in the determination of suspects. As a recommendation, it is necessary to reform the criminal justice system by removing the pretrial mechanism and replacing it with direct examination by judges in the main trial. In addition, restorative justice mechanisms and plea bargaining systems, which have been implemented in several countries, can be adapted to improve the efficiency of case resolution without compromising the protection of human rights. These reforms should also be accompanied by improvements to investigation and prosecution mechanisms to ensure greater transparency and accountability at every stage of the law