bluuebunny/crossref_metadata_2025 huggingface dataset:
Time History Sintetik di Wilayah Bogor Ditinjau dari Deagregasi Hazard
Authors: Rahayu Pranowo , Pawirodikromo Widodo
Published: August 2023

Indonesia dikenal selain sebagai negeri yang dikeliling cincin gunung api, juga wilayah yang paling kerap diguncang gempa. Salah satu, yang terdahsyat di zaman modern ini, adalah gempa yang menyebabkan tsunami Aceh 2004 yang memiliki kekuatan 9,1 – 9,3 Mw juga termasuk gempa besar di dunia. Salah satu gempa besar lain adalah gempa Cianjur 2022 yang berkekuatan 5,6 Mw. Salah satu cara yang dilakukan untuk mengurangi risiko gempa adalah mendesain bangunan dengan konsep tahan gempa. Dalam perencanaan bangunan dengan konsep tahan gempa terutama gedung tinggi dibutuhkan data time history dalam merencanakan beban gempa. ketersediaan data time history di Indonesia saat ini masih menjadi kendala. Tujuan dilakukannya penelitian ini adalah untuk menganalisis Bangunan Tinggi di Wilayah Bogor yang dapat jadikan referensi dalam mendesain beban gempa untuk perencanaan gedung. Penentuan Uniform Hazard Spectrum (UHS) dilakukan dengan metode probabilistik, kemudian dilanjutkan dengan melakukan spectral matching untuk mendapatkan ground motion sintetik, lalu tahap berikutnya menggunakan Deepsoil untuk mengetahui Shear Stress Ratio dan Tripartite Graph. Hasil dari penelitian ini diperoleh risiko gempa yang direpresentasikan dalam bentuk nilai percepatan untuk Wilayah Bogor pada UHS memiliki nilai percepatan T = 0 detik adalah 0.3537 g, T = 0.2 detik adalah 0.8689 g, dan T = 1 detik adalah 0.2802 g. Sumber gempa Sesar Cimandiri mendominasi sebesar 23,775% yang diprediksi memiliki kontribusi terbesar terhadap risiko gempa. Hasil Spectral Matching dengan Big Bear 01 1992 Wrightwood - Swarthout yang mempunyai magnitude 6.46 dengan mekanisme strike slip dan jarak 70.94 km yang kurang lebih sama dengan Deagregasi Hazard yang dimaksud. Hasil respons spektra memperlihatkan bahwa hasil dari matching begitu tinggi dan turun bertemu dengan respons spektra yang ada pada layer 1, 2, dan 3 di detik ke sekitar 0.74.
Brilliability and fracture strength of float glass under static and dynamic loads due to radiation heat
Authors: Julianto Eko , Feriansyah Feriansyah , Wahyu Wahyu , Gunarto Gunarto , Sarwono Eko
Published: August 2023

In this research, steady state and thermal crack analysis was carried out on clear glass exposed to heat radiation with different thicknesses. The analysis process is carried out from the thickness of the glass and testing the temperature variation of the glass testing process to find out the maximum temperature limit of radiation exposure until the glass multiplies thermal crack with steady state analysis of the predetermined ideal heat time. The data collection method used in this study was through testing in an oven where data collection was based on the results of a thermal steady state analysis. The increase in temperature per minute from the first minute was 138.4 ⁰C to the 7th minute or the end was 179.3 °C, from the results research states that in the 7th minute the glass has experienced a crack or crack where the crack starts from the side of the glass which is insulated from radiant heat.
Energy saving analysis using burner /thermal tank and heater electric in the marine fuel oil (mfo) treatment process
Authors: Kartika Siska Ayu , Abdullah N.H. , Saksono P.
Published: August 2023

Energy savings in Diesel Power Plants (PLTD) have been carried out by comparing the Marine Fuel Oil (MFO) processing process when using a burner/thermal tank and an electric heater. Energy savings are analyzed in this study by calculating the comparison of operational costs, cost efficiency and processing time. The place of research was carried out in one of the Diesel Power Plants in Indonesia, with the object of research being an electric heater and a burner/thermal tank. The research method used quantitative methods in the form of literature study, observation, and field testing. The research was conducted by collecting data on temperature, humidity, and fuel consumption when testing the MFO treatment every 1 hour until the specified temperature was reached 94-96°C. Based on the research results, the processing of MFO using a burner/thermal tank is more efficient in terms of time at the beginning of processing, with a savings of 17.2% and in terms of operational costs more efficient 11.67%. However, after the process continued for 7 days, MFO processing using an electric heater was more efficient in terms of operating costs by 31.87%.
Hubungan Minum Kopi Dan Kecemasan Pada Mahasiswa Fakultas Kedokteran Universitas Tarumanagara Angkatan 2019 Pada Bulan Januari 2021
Authors: Dewanti Puspa , Tadjudin Noer Saelan
Published: August 2023

Kopi merupakan minuman yang digemari masyarakat khususnya remaja, karena memiliki cita rasa serta aroma yang khas. Banyak remaja minum kopi untuk meningkatkan semangat dan menghilangkan kantuk pada saat sekolah terutama yang berusia 12-21 tahun (Purdiani, 2014). Menurut National Coffee Association United States pada tahun 2011 dalam 10 tahun terakhir di Indonesia pada remaja usia 18-24 tahun terdapat peningkatan konsumsi kopi sebesar 98%.10 Remaja yang telah masuk perguruan tinggi dan menjadi mahasiswa, mereka harus memiliki kesadaran yang penuh untuk belajar dan meningkatkan daya pikirnya serta haus akan ilmu pengetahuan. Karena hal tersebut mahasiswa sangat rentan terhadap cemas. Menurut Kaplan Saddock & Grabb tahun 2010 dengan bantuan kafein yang terkandung didalam kopi dapat meningkatkan semangat dan menghilangkan kantuk.1 Penelitian ini bertujuan untuk mengetahui dampak kopi terhadap kecemasan sehingga dapat mengedukasi mahasiswa Fakultas Kedokteran Universitas Tarumanagara angkatan 2019 dan dapat mengurangi dampak kopi terhadap cemas yang dialami mahasiswa. Penelitian ini bersifat analitik observasional menggunakan rumus cross sectional. Sedangkan teknik pengambilan sampel menggunakan kuisioner secara non-random sampling dengan jenis consecutive sampling. Pengambilan data dilakukan dengan menggunakan kuisioner online dengan googleform pada bulan Januari 2021 pada saat libur semester yang akan mengikuti blok respirasi dan dibagikan melalui grup angkatan. Didapatkan sampel sebanyak 97 responden. Analisis pada penelitian ini diperoleh hasil perhitungan dari uji statistik yang menunjukkan nilai p-value sebesar 0,002 lebih kecil dari α = 5% atau (0,002 < 0,05) yang berarti terdapat hubungan antara minum kopi dengan kecemasan pada mahasiswa Fakultas Kedokteran Universitas Tarumanagara angkatan 2019.
PREVALENSI MULTIMORBIDITAS, KEBUTUHAN PERAWATAN DAN KETERBATASAN AKTIVITAS PADA LANSIA DI JAKARTA
Authors: Rumawas Marcella Erwina , Bukhori Imam
Published: August 2023

Latar Belakang: Multimorbiditas, yaitu didapatkannya dua atau lebih kondisi medis pada individu dalam waktu bersamaan, merupakan masalah kesehatan yang sering ditemukan pada lansia. Adanya multimorbiditas dapat menyebabkan peningkatan kebutuhan perawatan dan membatasi aktivitas sehari-hari. Di Indonesia, informasi mengenai multimorbiditas pada lansia masih sangat minim. Tujuan penelitian ini adalah diketahuinya prevalensi multimorbiditas, kebutuhan perawatan dan keterbatasan aktivitas pada lansia di Jakarta.  Metode: Penelitian deskriptif potong lintang meliputi subyek lansia usia ≥60 tahun yang dipilih secara non-random konsekutif dengan menerapkan kriteria seleksi pada anggota komunitas yayasan Al-Madiniyah, Jakarta Barat. Pengumpulan data menggunakan kuesioner Self–Administered Comorbidity Questionnaire (SCQ), yang terdiri dari 12 kondisi medis tertentu dan maksimal 3 kondisi medis tersering lainnya, disertai informasi mengenai kebutuhan perawatan dan keterbatasan aktivitas untuk setiap kondisi medis. Hasil: Didapatkan prevalensi multimorbiditas sebesar 60% pada 40 subyek lansia (minimal 2 dan maksimal 6 multimorbiditas), terutama pada perempuan (87,5%), usia 60-69 tahun (66,7%), menikah (55%), tidak tamat sekolah dasar/tidak sekolah (58,3%) dan ibu rumah tangga (70,8%).  Pada 24 subyek lansia dengan multimorbiditas, kondisi medis tersering adalah penyakit sendi (70,8%), gangguan lambung (62,5%) dan nyeri punggung (58,3%), yang mana 79,8% membutuhkan perawatan dan 20,8% mengalami keterbatasan aktivitas. Kesimpulan: Penelitian ini menunjukkan adanya kebutuhan perawatan dan keterbatasan aktivitas pada lansia dengan multimorbiditas.
Penurunan Prestasi Akademik akibat Stres selama pandemi COVID-19
Authors: Charles Yulius Charles , Halim Susilodinata
Published: August 2023

Pandemi COVID-19 yang bermula pada tahun 2019 menyebabkan berbagai perubahan besar dalam kehidupan sehari-hari seseorang, akibat perubahan ini banyak faktor stres baru yang bermunculan terutama kepada mahasiswa akibat pembelajaran melalui daring dan adaptasi metode pembelajaran baru yang menyebabkan penurunan prestasi akademik, stres sendiri didefinisikan ketidaksesuaian perasaan seorang individu dengan situasi yang diharapkan. Tujuan penelitian ini adalah untuk melihat hubungan antara stres dengan prestasi akademik pada mahasiswa FK Untar Angkatan 2022. Metode: Penelitian ini merupakan penelitian analitik observasional dengan pendekatan cross-sectional. Pengambilan data responden menggunakan google form yang berisi kuesioner Perceived Stress Scale (PSS-10) untuk mengukur tingkat stres sedangkan untuk mengukur hasil belajar atau  Indeks Prestasi Kumulatif(IPK) mahasiswa diperoleh melalui pengisian google form pada kolom indeks prestasi akademik 3 blok selama semester 1. Uji analisis data menggunakan uji statistik chi-square dengan pendekatan cross-sectional. Hasil: Penelitian ini menunjukkan sebesar 89,7% responden tidak mengalami stres dan sebanyak 10,3% responden mengalami stres. Sebagian besar responden berjumlah 144 atau 87,3% memliki IP >= 2.00, sedangkan yang memiliki IP< 2.00 sebanyak 21 atau 12,7%. Hasil penelitian menunjukkan tidak ada hubungan bermakna antara stres dengan prestasi akademik mahasiswa Fakultas Kedokteran Universitas Tarumanagara Angkatan 2022 karena P-value= 0.520. Kesimpulan: Penelitian yang dilakukan belum dapat menunjukkan adanya hubungan antara stres dengan prestasi akademik pada mahasiswa Fakultas Kedokteran Universitas Tarumanagara Angkatan 2022.
PENGENDALIAN KUALITAS PRODUK FILTER BAHAN BAKAR DENGAN MENGGUNAKAN METODE SIX SIGMA
Authors: Rio Alfandy  , Helena Juliana Kristina  , Doaly Carla Olivia
Published: August 2023

PT. ABC merupakan perusahaaan yang bergerak di bidang industri pembuatan spareparts otomotif dan mesin. Berdasarkan hasil wawancara dan pengamatan diketahui adanya permasalahan mengenai banyaknya jumlah cacat produk yang dihasilkan saat memproduksi filter bahan bakar sebesar 3,84%. Tujuan dilakukannya penelitian ini adalah untuk meningkatkan kualitas dalam memproduksi produk filter bahan bakar dengan menggunakan metode six sigma untuk mengidentifikasi, menganalisis dan memberikan beberapa usulan perbaikan. Jenis cacat produk yang paling banyak dihasilkan adalah filter jebol, filter tidak center dan reject setting. Berdasarkan hasil pengolahan data diperoleh nilai Cp sebesar 0,96, Cpk sebesar 0,88, DPMO sebesar 12788 unit dan nilai sigma sebesar 3,73. Kemudian dilakukan implementasi terhadap usulan perbaikan berupa membuat checksheet, one point lesson dan standarisasi parameter. Hasil perhitungan yang dilakukan pada tahap control adalah peta kendali p menunjukkan bahwa data lebih stabil, nilai kapabilitas proses meningkat menjadi 1,17 dan 1,11, nilai DPMO mengalami penurunan menjadi 11652 dan nilai sigma mengalami peningkatan menjadi 3,76. Hal ini menunjukkan bahwa implementasi yang dilakukan berhasil meningkatkan kualitas dalam memproduksi filter bahan bakar.
STRATEGI PENINGKATAN KUALITAS PAKAN AYAM PEDAGING BERBENTUK CRUMBLE DENGAN METODE SIX SIGMA DAN HOUSE OF QUALITY
Authors: Sylvia  , Helena Juliana Kristina  , Salomon Lithrone Laricha
Published: August 2023

Perusahaan diwajibkan untuk memberikan kualitas terbaik dengan zero defect pada produk yang dihasilkan. Namun, zero defect belum dapat terwujud. Oleh karena itu, dilakukan penyusunan strategi peningkatan kualitas produk dengan menggunakan metode six sigma (DMAIC) dan house of quality. Objek penelitian pada penelitian ini adalah pakan broiler berbentuk crumble karena pakan broiler berbentuk crumble memiliki jumlah defect terbesar dengan jumlah produksi terbanyak kedua. Berdasarkan perhitungan yang dilakukan, dapat diketahui bahwa nilai DPMO dan tingkat sigma perusahaan adalah 2.358,248 kg dan 4,326. Hal ini menunjukkan bahwa zero defect belum terwujud. Berdasarkan house of quality yang telah disusun, dapat diketahui bahwa tiga technical response (strategi peningkatan kualitas) dengan peringkat tertinggi yang dapat diprioritaskan perusahaan adalah penyuluhan mengenai penerapan work instruction dan SOP kepada seluruh pegawai, pemeriksaan terhadap mesin atau peralatan produksi sebelum proses produksi dilaksanakan, dan penerapan safety stock dan reorder point pada fast-moving spare part. Dengan asumsi bahwa strategi peningkatan kualitas diimplementasikan, dapat diketahui bahwa terjadi peningkatan nilai Cp menjadi 1,297, peningkatan nilai Cpk menjadi 0,7733, penurunan nilai DPMO menjadi 1.257,65, dan peningkatan tingkat sigma menjadi 4,521. Hal ini menunjukkan bahwa strategi peningkatan kualitas yang diberikan berhasil meningkatkan kualitas proses produksi perusahaan dalam menghasilkan produk pakan ayam pedaging berbentuk crumble.
Accurate Machine Learning Algorithms Based on Detection of Leukemia Disease: A Review
Authors: Sadiq Ahmed Nawzat , E. A. Armya Revella
Published: August 2023

Abstract — Blood cell disorders are often detected in advanced stages as the number of cancer cells is much higher than the number of normal blood cells. As one of the important aspects of diagnosing leukemia and determining its progress is identifying malignant cells. This paper illustrates the discovery of leukemia and its four main types through machine learning algorithms, as it was found that Computer-Aided Diagnosis (CAD) has progressed rapidly over the past few years. To identify leukemia, multiple machines learning algorithms have been created for early detection. Leukemia is a condition synonymous with white blood cells (WBC) that affect the bone marrow and/or blood. The early, healthy, and reliable diagnosis of leukemia has a major role in treating patients and saving their lives. To define leukemia in relation to its subtypes, several methods have been developed. However, these approaches include improvements in efficiency, learning process, and performance. This research paper is explained to enhance and provide rapid and stable detection of leukemia. To facilitate real-time collaboration between patients and healthcare providers for leukemia research, early diagnosis, and treatment. Thus it can save patients and doctors time and money. While the use of machine learning algorithms has shown accurate results, it depends on the shape and size of the sample and the type of algorithm used to classify the subtypes of leukemia (leukemia).
متضمنات وابعاد الاستهلاك الوفير وانعكاسته على تحقيق التنمية المستدامة (دراسة حالة المخلفات الصلبة)
Authors: Bashir Abdulqader Chalabi Iyad
Published: August 2023

ان استمرارية الاستهلاك الوفير مع الزيادة السكانية التي تجاوزت الثمانية مليارات في بداية العقود الاولى للالفية الثالثة ، ادى ذلك الى توليد ضغطا على البيئة التي تعد احد الاركان المهمة للتنمية المستدامة ، ومن هذا المنطلق لابد من توفير شروط تحقيق التنمية المستدامة  بما يتوافق مع كافة الجوانب البيئية ذات الصلة , حيث يعد الاهتمام بالمخلفات الصلبة وشبه الصلبة والتي تناولتها العديد من الدراسات والبحوث ومنها هذه الورقة التي تناولت السياقات التاريخية منذ بداية الثورة الصناعة وظهور افكار المدرسة الكلاسيكية بدءاً بكتاب ثروة الامم وانتهاءً بافكار التنمية المستدامة والاقتصاد الدائري.

كما تناولت الورقة مصادر وخصائص وانواع  المخلفات وكيف يتم التعامل  مع الاثار السلبية المحتملة من اجل ايجاد علاقة ايجابية بين المخلفات الصلبة وبين توليدها ومعدلات اعادة التدوير, فضلا عن تناول العيش المستدام والامكانات والتحديات المستقبلة للتنمية المستدامة.
Session summaries
Authors: CAML Editor
Published: August 2023

-Research in Canadian music: EMC 2d ed.
-Copyright: Fair use of sound recordings: views of creators and users
Segmented Reconstruction of Low-Acceleration Orbital Maneuvers
Authors: Jia-Richards Oliver
Published: August 2023

This paper considers the problem of inferring the acceleration acting on a spacecraft in a near-circular orbit around a large planetary body when the acceleration is known to act in the along-track direction. A segmented approach is analyzed where the acceleration profile over a given period of time is approximated as a piecewise-constant profile. Noisy measurements of the spacecraft’s position are collected throughout the acceleration profile, from which the constant acceleration for each segment of the piecewise-constant profile can be inferred. The primary contribution of this work is an analytical approximation for the sensitivity of each measurement with respect to the constant acceleration of each segment. The resulting analytically approximated sensitivity matrix enables an analytical reconstruction of the acceleration profile given a numerically simulated reference trajectory. Applications of the segmented approach for thrust inference for both discontinuous and continuous thrust profiles are demonstrated. In particular, the reconstruction of a simulated thruster degradation profile over the course of 60 h is shown.
Pengaruh Struktur Kepemilikan, Dispersi Kepemilikan dan Struktur Modal Terhadap Kebijakan Deviden
Authors: Ganjar Atiqah , Syaipudin Usep , Kusumawardani Niken
Published: August 2023

This study aims to determine: (1) The effect of ownership structure on the dividend policy of property companies listed on the IDX in 2015-2019, (2) The effect of dispersion of ownership on the dividend policy of property companies listed on the IDX in 2015-2019, (3) Effect of capital structure on dividend policy of property companies listed on the Indonesia Stock Exchange in 2015-2019. This type of research is quantitative research with secondary data. The population in this study were property companies listed on the Indonesia Stock Exchange in 2015-2019. The samples of this study were 10 property companies listed on the Indonesia Stock Exchange in 2015-2019. The data were obtained using the financial statements of property companies for the 2015-2019 period. The data analysis method used is multiple regression analysis. Based on the results, this study indicates that (1) the ownership structure has a positive effect on the dividend policy of property companies. (2) Dispersion of ownership does not affect the dividend policy of property companies. And (3) Capital structure has no effect on dividend policy of property companies.
Pengaruh Klon Kopi dan Dosis Urea pada Pertumbuhan Tanaman Kopi Robusta (Coffea canephora L.) di Kebun Entres
Authors: Iqbal M. Bagas Nur , Same Made , Hartono Joko S. S.
Published: August 2023

Coffee is one of the productive agro-industries in Indonesia, so care needs to be taken to use varieties and doses of fertilizers based on plant needs and environmental conditions. This study aimed to determine the clone, dose of urea, and the interaction between the clone and the dose for Robusta coffee plants in the mother planting stock farm. This study used a split-plot design with coffee clones as the main plot and doses of urea fertilizer as subplots. The study showed no significant difference between clones in the growth of robusta coffee plants, where clone BP 534 was the best clone for plant growth. In addition, based on the study's results, the best interaction was obtained where the best interaction for increasing the number of leaves was between clone BP 936 and a dose of 15 g.plant-1. The interaction between clones and the best dose for increasing the height and number of branches was between clone BP 936 and dose 20 g.plant-1, and the interaction between clones and the best dose for plant stem diameter was between clone BP 358 and a dose of 20 g.plant-1.
Peramalan Produksi Kelapa Sawit dan Karet di Provinsi Kalimantan Selatan
Authors: Izafera Anis Huzaimanor , Salam Nur , Susanti Dewi Sri
Published: August 2023

In Indonesia, the plantation sub-sector has an important role in increasing state revenue through the exports of its products, besides the mining and gas sector. The most widely produced plantation crops in Indonesia are oil palm and rubber and South Kalimantan is one of the top 10 provinces in Indonesia with oil palm plantations. This study aims to detect the correct forecasting model for data on oil palm crops and rubber production in South Kalimantan Province and to analyse the forecasting results for oil palm crops and rubber in South Kalimantan Province using the double exponential smoothing method.  This research was conducted for 8 months (March 2022 to December 2022), using observational data from 2001 to 2021. Double Exponential Smoothing Holt was used in this study by looking at the error value obtained with the smallest Mean Absolute Percentage Error (MAPE). For palm oil production, the parameters α=0.8 and β=0.6 were the best parameters with a MAPE value of 8.05% and resulted in the forecasting of oil palm crops production in 2022 not increasing, in 2023 and 2024 experiencing an increase of 1%. As for forecasting rubber production, the parameters α=0.9 and β=0.9 are the best parameters with a MAPE value of 5.45% and forecasting rubber production in 2022 will increase by 1%, in 2023 and 2024 by 2%.
Character Testing Of New Superior Rice Line Through Participatory Plant Breeding Method
Authors: Kartahadimaja Jaenudin , Erlinda Syuriani Eka
Published: August 2023

Among the superior varieties can be obtained through breeding. The low level of farmer adoption of improved varieties resulting from breeding is partly due to the different preferences of farmers with breeding. The development of specific varieties will be successful through a participatory breeding program that involves breeders, farmers and rice industry players in the selection process for prospective new varieties. The research objective was to analyze and select the quantitative and qualitative characters of 12 new rice lines to produce new superior rice varieties that were more suitable to farmers' tastes. The research in the field was compiled using a Randomized Completely Block Design (RCBD), as a treatment consisting of 12 lines of F11 generation, each treatment was repeated three times. Observations were made on the like and dislike statements of respondents consisting of 20 farmers on the phenotypic character of each line, as well as an assessment of the phenotype acceptance of each line as assessed by the breeders (4 breeders) before harvest following the guidelines (IRRI, 2002) . The results showed that the F3 line had the highest preference value, namely the value of 0.9, meaning that the farmers liked the most. The line with the lowest preference value is the D2 line with a value of -1 (minus one), meaning that it is the least preferred. Based on the phenotype acceptance value of the breeders for each line, three lines had a phenotypic value of 1 or very good value, namely the B4, H1, and H4 lines, while those with a value of 3 or good were eight lines, namely the B2, B3, B7, D2, D3, F3, F4, and L2 lines. One line has a bad phenotype value, namely the K.
Dampak perubahan iklim terhadap produksi tanaman pangan di indonesia
Authors: Malau Leo Rio Ependi , Rambe Khoiru Rizqy , Ulya Nur Arifatul , Purba Arly Getha
Published: August 2023

Perubahan iklim menjadi salah satu tantangan serius yang dihadapi oleh Indonesia dalam pemenuhan kebutuhan pangan. Salah satu fenomena perubahan iklim yang berpengaruh terhadap sektor pertanian khususnya tanaman pangan adalah El Nino Southern Oscillation (ENSO) yang terdiri dari El Nino dan La Nina. ENSO menyebabkan variabilitas curah hujan sehingga berdampak buruk bagi produksi tanaman pangan seperti padi, jagung dan kedelai. Penelitian ini bertujuan untuk (1) mengidentifikasi provinsi terdampak ENSO di Indonesia dan (2) menganalisis dampak ENSO dan determinan lainnya terhadap produksi tanaman pangan (padi, jagung, kedelai) di provinsi yang terdampak. Penelitian ini menggunakan panel data sekunder tahun 2010-2017 dari 16 provinsi terdampak ENSO. Korelasi Pearson dan regresi panel statis digunakan untuk menjawab tujuan penelitian. Fenomena ENSO diproksi melalui curah hujan. Hasil penelitian menunjukkan sebagian besar provinsi di Indonesia terdampak ENSO, yang terlihat dari korelasi negatif dan signifikan antara Oceanic Nino Index (ONI) dan curah hujan. Regresi panel statis menunjukkan ENSO berpengaruh signifikan terhadap produksi padi dan kedelai melalui indikator curah hujan. El Nino yang disertai penurunan curah hujan signifikan berdampak lebih besar terhadap produksi padi dan kedelai, sedangkan La Nina yang disertai peningkatan curah hujan signifikan memiliki dampak lebih besar terhadap produksi kedelai.  Secara umum, El Nino memiliki pengaruh yang lebih besar terhadap produksi tanaman pangan.
JARINGAN RANTAI PASOK KOPI BIJI
Authors: Noer Irmayani , Handayani Sri
Published: August 2023

Agribisnis kopi di Indonesia berkembang pesat dalam 5 tahun terakhir. Komoditas ini memiliki potensi besar untuk berkontribusi signifikan dalam program pemulihan ekonomi nasional (PEN) pasca pandemi. Hasil penelitian sebelumnya menunjukkan bahwa sebagain besar kopi biji petani (56%) dijual dalam bentuk biji kering asalan (raw material), atau curah.  Semetara itu, kemajuan pesat sektor pariwisata dan ekonomi kreatif serta perkembangan preferensi konsumen dalam bisnis food and baverage  telah mampu  mengangkat kopi premium (petik merah) menjadi potensi pasar baru bagi petani.  Namun, keterbatasan akses pasar dan sistem rantai pasok serta teknologi penanganan hasil menyebabkan potensi tersebut hanya dinikmati sebagian kecil petani.  Peneitian ini bertujuan untuk:  mengidentifikasi jaringan rantai pasok kopi dari petani kepada konsumen (eksportir dan industri pengolahan kopi), dari sentra produksi Lampung Barat ke Kota Bandar Lampung.  Berdasarkan hasil identifikasi jaringan rantai pasok kopi biji terdapat delapan aliran rantai pasok kopi biji dan beberapa pelaku yang terlibat langsung yaitu petani, pedagang pengumpul, pedagang besar, kelompok tani, gabungan kelompok tani, kelompok usaha bersama, dan konsumen (eksportir dan industri pengolahan kopi). Hasil perhitungan dan analisis nilai tambah ekonomi  menunjukkan bahwa sebagian besar nilai tambah dari saluran rantai pasok  kopi biji dinikmati oleh para pelaku yang terlibat langsung dalam sistem rantai pasok.  Penerima nilai tambah terbesar adalah petani dan penerima nilai tambah terkecil adalah pengepul.

Kata kunci:  sistem rantai pasok, pelaku dalam rantai pasok, nilai tambah kopi biji
OPTIMALISASI FORMULA MINUMAN OLAHAN JERUK NIPIS (Citrus aurantifolia) DENGAN PARAMETER KAREKTERISTIK PRODUK
Authors: Gozali Thomas , Assalam Syarif , Ikrawan Yusep , Nurfalia Inne
Published: August 2023

Jeruk nipis merupakan salah satu jenis buah-buahan dikenal dengan kandungan vitamin C yang tinggi dan mengandung senyawa kimia yang bermanfaat bagi tubuh. Sehingga jeruk nipis dapat diolah menjadi minuman. Minuman olahan merupakan minuman yang diolah dalam bentuk cair maupun serbuk yang tidak mengandung bahan tambahan pangan maupun mengandung bahan tambahan pangan baik alami maupun sintetik dan dikemas dalam kemasan siap saji. Tujuan dari penelitian ini adalah untuk mendapatkan formulasi yang optimal dalam pembuatan minuman olahan jeruk nipis menggunakan program Design Expert Versi 13 metode Mixture D-Optimal. Penelitian ini dilakukan dua tahap yaitu, analisis bahan baku yaitu untuk mengetahui kadar vitamin C dan nilai pH dari sari jeruk nipis dan menentukan formulasi awal untuk menentukan batasan awal formula minuman olahan jeruk nipis serta pengujian pH pada formulasi awal untuk menentukan jenis pengawet yang akan digunakan. Sedangkan penelitian utama yaitu untuk mengetahui formulasi optimal menggunakan program Design Expert Versi 13 metode Mixture D-Optimal, serta formulasi tersebut dilakukan analis respon kimia yaitu penentuan kadar vitamin C, kadar gula total, dan nilai pH. Respon fisika yaitu total padatan terlarut. Respon organoleptik terhadap atribut warna, aroma, dan rasa. Minuman olahan jeruk nipis terbuat dari sari jeruk nipis, sukrosa, air, trehalosa, dan natrium benzoate. Dari 10 formulasi yang direkomendasikan kemudian dihasilkan 1 formula optimal. Formulasi tersebut menghasilkan kadar vitamin C 28,49 mg/100g, kadar gula total 22,03%, pH 2,84, total padatan terlarut 21,18°Brix, warna dengan skor 4,97 (agak suka), aroma dengan skor 5,57 (suka), dan rasa dengan skor 5,17 (suka). Formula optimal produk minuman olahan jeruk nipis yang dihasilkan oleh program Design Expert Versi 13 memiliki nilai desirability 0,852.

 

Kata kunci : Design Expert, Minuman Olahan Jeruk Nipis, Optimasi Formula, Sari jeruk                      Nipis.
Análise epidemiológica de Hepatite B no Brasil, nos anos de 2019 a 2021, no contexto da pandemia de SARS-CoV-2
Authors: Colares Túlio Vulcão , Paiva Ana Glória Soares de Souza , Pinheiro Rebeca Fontenele , Batista Yasmin Kellen Chagas , Rocha Aline Oliveira , Gama Mateus Santana , Silva Maria Luisa Lopes da , Gomes Maervily Jacqueline dos Santos , Brígida Márcio Deyvid Corrêa Santa , Uesugi Juliana Hiromi Emin
Published: August 2023

Objetivo: Avaliar o perfil epidemiológico da hepatite B no Brasil, no período de 2019 a 2021, no contexto pandêmico de SARS-CoV-2. Métodos: Trata-se de um trabalho de caráter descritivo transversal dos casos confirmados de hepatite B. Os dados foram obtidos por meio do Sistema Nacional de Agravos de Notificação (SINAN) e analisados segundo as variáveis: notificação por região; sexo; faixa etária, escolaridade e provável meio de transmissão. Resultados: Foram confirmados 29.417 casos de hepatite B no Brasil, sendo que 14.164 foram registrados em 2019. A doença afetou principalmente homens (n=16.752), pessoas pardas (n=11.750) com ensino médio completo (n=3.020), e a principal forma de transmissão por meio de relações sexuais desprotegidas (n=5.656). Conclusão: O estudo mostrou que a hepatite B teve uma queda no número de casos ao longo dos anos pesquisados, mas que provavelmente teve relação à subnotificação de doenças durante a pandemia. O controle da hepatite B é uma questão de saúde pública global e deve ser uma prioridade, mesmo durante a pandemia. As informações investigadas podem ajudar na criação de programas de prevenção e conscientização e direcionar os serviços de saúde para populações vulneráveis.
Serum microRNA-210 as a predictor of neoadjuvant chemotherapy resistance in breast cancer
Authors: Naeem Doaa , Kamal Abdelaziz Hanan , Ahmed Barghash Nadia , Soliman Maher , Farag Mannaa Hazem
Published: August 2023

Objectives

Breast cancer (BC) is a major global health issue as it is the most common malignancy in women. Despite, the role of neoadjuvant chemotherapy (NAC) in early BC has been established, there is a non-small proportion of patients who might develop chemoresistance. Several studies have investigated the relationship between microRNA-210 (miRNA-210) and neoadjuvant chemoresistance in BC with controversial results. Thus, this study aimed to evaluate the role of miRNA-210 as a predictor for chemoresistance in BC receiving NAC.

Material and Methods

The study enrolled 15 chemo-sensitive and 15 chemo-resistant patients with BC receiving NAC. In addition, 10 newly-diagnosed BC patients before treatment and 10 healthy women were recruited as controls. Serum samples from all patients and controls were withdrawn and measurements of miRNA-210 levels using quantitative real-time reverse transcriptase-polymerase chain reaction (qRT-PCR) were done and compared.

Results

The median value of miRNA-210 level was 1.53, 0.27, 0.52, and 1.35 in chemo-sensitive, chemo-resistant, newly-diagnosed, and control groups, respectively. A statistically significant difference (Chi square = 9.801, p = 0.020, df = 3) was found in the mean serum miRNA-210 among the four different groups. Using logistic regression model, low serum miRNA-210 expression level was found to be a predictive factor of chemo-resistance with p = 0.038 (OR of 0.103, 95% CI = 0.012 –0.886). Using the receiver operating characteristic curve, it was found that the area under the curve (AUC) was 0.747 (95% CI = 0.550 –0.943).

Conclusion

Serum miRNA-210 could be an effective predictive biomarker for chemoresistance in BC patients receiving NAC.
A survey regarding awareness of ‘plagiarism while writing articles’ among students and faculty members of Indian colleges/universities
Authors: Ambwani Meenakshi , Nayak Chaturbhuja
Published: August 2023

Objectives:

Originality concerning scientific and research publications is of vital importance in this day and age and must be protected. With literary piracy reaching celestial heights in recent times, ethics must be maintained so that research integrity prevails. Plagiarism ranges from copying a few words to entire paragraphs and even ideas. The contribution(s) of the original author are not mentioned, not even using in-text citations. Plagiarism occurs largely due to the writer’s ignorance, but may be deliberate on occasion. The aim of the study was to understand the level of awareness among students and faculty members of Indian colleges/universities about plagiarism and its related aspects while writing and publishing articles.

Materials and Methods:

A virtual cross-sectional survey was conducted on students and faculty members using Google Forms. A 20-item self-administered questionnaire was framed by the authors after an extensive review of the literature and circulated through various WhatsApp groups to extract information from the participants about causes of plagiarism, paraphrasing, money-oriented publication agencies, plagiarism checker software and preventive measures.

Results:

Of 63 total respondents, 93.7% of participants were just aware of the term plagiarism in relation to writing papers and research articles, although 54% admitted that they had never written an article.

Conclusion:

The overall analysis highlighted that around 93% of responders had preliminary knowledge about plagiarism, but were still unaware of the seriousness of the problem and its grave consequences. Extensive campaigning and workshops need to be conducted to guide writers about the rules of publication ethics to prevent such malpractice.
Point-of-care lactate as a predictor of 7-day morbidity and mortality in critically ill patients presenting to the emergency department in Kenyatta National Hospital
Authors: Mutuku Peris Mbatha , Joshi Mark David , Genga Eugene Kalman , Kagima Jacqueline Wanjiku
Published: August 2023

Objectives:

Hyperlactatemia is associated with increased risk of mortality. Point-of-care (POC) lactate levels have been used worldwide in the emergency department (ED) and critical care units for risk stratification. The aim of this study was to determine whether POC lactate levels are predictive of outcomes in our low-resource setting.

Materials and Methods:

This was a non-interventional prospective cohort study carried out at the ED Critical Care wards in Kenyatta National Hospital between June 12, 2021, and July 25, 2021. The study included consecutively consenting adults above 18 years at the ED who were critically ill as indicated by a Modified Early Warning Score of equal to or above 5. Lactate was measured using a handheld Statstrip lactate meter. Patients were followed up for 7 days, and outcomes were documented.

Results:

Two hundred and eighty-one patients were enrolled in the study. The mean lactate level was 4.0 mmoL/L with a median interquartile range of 3.0. Hyperlactatemia was evident in 161 (57%) using a cutoff of 2.5 mmoL/L. The all-cause mortality rate was 33.8%. Type A hyperlactatemia was the most common at 84.3% and 17.7% in Type B. Type A hyperlactatemia mortality rate was 37.1% and Type B 15.9% (odds ratio [OR]: 3.1, 95% confidence interval [CI]: 1.3– 7.3, P = 0.006). In the high lactate group, the 7-day mortality rate was 42.2% compared to a mortality rate of 22.5% in the normal lactate group (OR: 2.5, 95% CI: 1.5–4.3, P = 0.001). Hyperlactatemia was associated with an increased need for intensive care unit admission (OR: 2.2, 95% CI: 1.3–3.7, P = 0.002) and organ support mainly mechanical ventilation (OR: 2.6, 95% CI: 1.5–4.4, P = 0.001) and inotropic/vasopressors support (OR: 2.7, 95% CI: 1.2–6.2, P = 0.016).

Conclusion:

POC lactate is an independent predictor of 7-day mortality with a 2-a fold increased risk of mortality and was associated with increased need for organ support.
Politik ekonomi pemerintah Hindia Belanda perspektif kebijakan cultuurstesel di Madiun
Authors: Mahamid Mochammad Nginwanun Likullil
Published: August 2023

Artikel bertujuan mengkaji kebijakan cultuurstesel yang mempengaruhi perubahan struktur pemerintahan di Madiun tahun 1800-an. Penguasaan Belanda atas wilayah Madiun di mulai setelah berakhirnya peristiwa perang Jawa pada 1830, sekaligus mengawali perubahan berbagai bidang politik dan ekonomi. Sebagai satu kesatuan yang melengkapi dengan tujuan utama pemerintah Belanda yang menginginkan efisiensi birokrasi untuk kelancaran perekonomian Hindia Belanda, serta mengambil keuntungan besar setiap tanah jajahan. Penelitian menggunakan metode sejarah, melalui pengumpulan sumber arsip kolonial dan foto sezaman, serta buku dan artikel jurnal. Sumber tersebut dipilih relevan lewat kritik sumber, lalu diinterpretasi dengan pendekatan politik dan politik ekonomi guna menganalisis usaha pemerintah Belanda terkait kebijakan cultuurstesel di Madiun, serta diperkuat teori kebijakan pemerintahan dari Roderick Arthur William Rhodes (1944). Lalu dilakukan historiografi, menghadirkan temuan berupa sistem tanam paksa yang memberatkan rakyat pribumi. Kemudian dalam pelaksanaannya ikut mengubah sistem pemerintahan di Madiun dari kerajaan ke kolonial, dan terbentuknya administrasi baru bernama Karesidenan Madiun beserta pejabat pemerintahan yang terdiri atas pejabat kolonial dan pejabat lokal atau pribumi.
Riwayat bangunan bersejarah sebagai peninggalan masa kesultanan Banten
Authors: Rifqiawati Ika , Utari Enggar , Aulia Muhammad Jafar , Salsabila Tazkia
Published: August 2023

Penelitian ini bertujuan untuk mengetahui sejarah dari bangunan bersejarah yang ada di Banten sebagai peninggalan masa Kesultanan Banten yang masih berdiri hingga saat ini. Kesultanan Banten adalah satu dari banyaknya kerajaan Islam yang terbesar di Indonesia. Pada masa Kesultanan Banten banyak terdapat bangunan seperti Keraton Kaibon, Masjid Agung Banten, Keraton Surosowan, Vihara Avalokitesvara dan Benteng Speelwijk. Bangunan tersebut dibangun oleh masyarakat Banten dibawah pimpinan para sultan diantaranya seperti Sultan Maulana Hasanudin, Sultan Haji, Sultan Maulana Yusuf, dan Sultan Ageng Tirtayasa. Jenis penelitian deskriptif digunakan dalam penelitian ini, dimana penelitian ini berusaha menjelaskan rangkaian kejadian atau kejadian sesuai dengan situasi yang ada. Metode sejarah digunakan dalam penelitian ini. Metode sejarah melalui beberapa langkah yaitu heuristik, kritik sumber, interpretasi dan historiografi. Penelitian ini dilakukan di kawasan Kesultanan Banten Lama Provinsi Banten. Teknik pengumpulan data yang memperoleh informasi secara langsung dengan mengamati situs-situs yang ada untuk menjalankan fungsi seperti pembuatan dokumen dan pencarian literatur. Penelitian ini juga berisikan nilai rekreatif, edukatif, dan informatif yang terkandung dalam situs peninggalan kesultanan Banten dengan analisa deskriptif.
The reconstruction of palupuh: The story of the natuurmonument and defense base in 1948
Authors: Sufyan Fikrul Hanif , Meri Destel , Hazmi Nahdatul , Yuhardi Y , Saputra Aldi
Published: August 2023

Palupuh had an important role in the past. Because the area, which was part of the Oud Agam Sumatra Westkust during the Dutch colonial era, was once designated by the government as a natuurmonument or forest conservation area. During the emergency government of the Indonesian republic (PDRI), it was once an important part of the defense of the mobilie brigade or mobbrig, and the ranks of the people from the onslaught of the Dutch army. In principle, this article aims to explain how Palupuh was before independence and the importance of this area for the defense base in 1948-1949. This article is organized in accordance with historical methods, namely heuristics, criticism, interpretation and historiography. The research findings show that during 1948-1949, when the Dutch bombarded Bukittinggi, the mobilie brigade moved its defense base several times. The final choice was Palupuh, which was a defense base in protecting Pasaman, which is in the north and Luhak Limopuluah Koto in the south. The mobrig troops and the nagari or kota defense line (BPNK) heroically guarded the defense bases to the north and south.
Comparing the effects of hybrid and online learning on physical activity and body mass index: A quasi-experimental investigation
Authors: Putra Muhamar Kodafi , Saputra Adhe , Kuntarto Eko , Sofyan
Published: August 2023

Changes in learning methods at school can affect students' learning habits and activity patterns. This study aims to investigate the effect of hybrid learning compared to online learning on fitness level and body composition, specifically focusing on body mass index (BMI). The research method used was a quasi-experiment with a pretest-posttest control group design approach. The number of research subjects was 128 students with an average age of 10.35 ± 0.67 years, a body weight of 42.05 ± 8.97 kg, and a height of 142.84 ± 7.94 cm. The results showed that the post-test BMI score in the hybrid learning group decreased significantly, p < 0.05, by 19.69 kg/m2, and there was an increase in physical activity of 2.94 METs. Whereas in the online learning group, there was no significant difference in BMI or physical activity variables. The results of this study are expected to be a reference for teachers in schools and other educators to apply the hybrid method compared to online learning so that students' physical activity patterns can be maintained and continuously improved, which has an impact on body composition. The findings can also help in reducing physical activity patterns in big cities on the island of Sumatera and can be a discussion for researchers to create or modify more effective and efficient learning methods.
Stability Analysis of Partially Saturated Soil Slope by Random Limit Equilibrium Method
Authors: Solomon Rubay , Nabil Al Hakeem
Published: August 2023

Disregarding soil suction in computing the shear strength of unsaturated soils is widely used practice above the water table where the pore pressure is negative. Stability analysis was conducted using Rocscience Slide 2 software to evaluate matric suction contribution to the shear strength of the unsaturated soil in a slope in Hong Kong. The stability analysis resulted in a critical deterministic factor of safety for fully saturated soil and 1.2 when the matric suction is considered. Uncertainty in shear strength properties is considered by conducting multi scenarios probabilistic analysis. Lognormal distribution was assigned to the soil properties. The distribution was sampled 1000 times using Latin Hypercube method. A new sample was used to determine the safety factor in each simulation. Probability of failure (PF), mean safety factor (FSmean) and reliability index (RI) were determined in each scenario. It was shown that the most realistic results are obtained when cross correlation factors and correlation length (θ) are involved in the scenario. The study indicates that PF and RI are sensitive to a change in the correlation length less than 25 and less significant change beyond 25 m. The FSmean did not show noticeable fluctuation with the variation of correlation lengths.
FORMULASI DAN UJI AKTIVITAS ANTIBAKTERI SEDIAAN SABUN CAIR EKSTRAK SABUT KELAPA (Cocos nucifera L. ) DENGAN VARIASI KONSENTRASI CARBOPOL 940 TERHADAP BAKTERI Staphylococcus aureus ATCC 25923
Authors: Sari Febriana Mukti Permata , Aisiyah Siti , Wulandari Destik
Published: August 2023

Shower gel is one of the preparations that can be used to protect the skin from Staphylococcus aureus bacterial infection. Plants that have antibacterial activity are coconut husk, the compounds contained are tannins, flavonoids, and polyphenols. Tannins have the activity of inhibiting the growth of Staphylococcus aureus bacteria. This study aims to determine the influence of Carbopol 940 variations on liquid soap preparations. Liquid soap preparations have antibacterial activity, find out which formulas have the best physical quality. Coconut husk extract was obtained by maceration method using 70% ethanol solvent. The concentration of coconut husk extract in the formula is 1.6% with a variation in the concentration of Carbopol 940 which is 0.5%, 1%, 1.5%. Physical quality examination includes organoleptic test, homogeneity test, pH test, viscosity, foam stability test, and free alkali test. Testing the antibacterial activity of liquid soap preparations using the method of diffusion of wells, the data obtained by analysis using the SPSS program. Variations in carbopol concentration 940 affect the physical quality of liquid soap preparations, the increasing concentration of carbopol affects viscosity, foam stability, and free alkali. All formulas have antibacterial activity of 21.23 (F4); 20.22 (F5); 19.37 (F6). The formula with the best physical quality and inhibitory power is formula 4 with a carbopol concentration of 940 of 0.5%.
FORMULASI SEDIAAN KRIM ANTIOKSIDAN EKSTRAK METANOL KULIT BUAH PISANG RAJA (Musa paradisiaca L.)
Authors: Putri Dwi Ayunda , Rejeki Endang Sri , Aisiyah Siti
Published: August 2023

Antioxidant compounds are compounds that counteract or reduce the negative impact of oxidants, which work by donating one electron charge so that the activity of these oxidant compounds can be prevented or inhibited. The aim of this study was to determine the formula for cream variation of extract from banana peel which has the best antioxidant activity with good quality and stability of the preparation. In this study, the antioxidant cream used 3 (three) series of concentrations of the methanol extract of the skin of the plantain (Musa paradisiaca L.) fruit, namely 0.5%, 1% and 2%. The methanol extract of plantain peel was obtained by maceration method with methanol as solvent. Antioxidant cream was tested for physical quality and stability which included organoleptic test, viscosity test, pH test, homogeneity test, adhesion test, and spreadability test. The antioxidant power test was carried out using the DPPH (1,1-Diphenyl-2-Picrylhydrazyl) method using a UV-Vis spectrophotometer with a wavelength of 400-600 nm. The results of the study were further analyzed statistically using the Tukey method and one-way ANOVA. The results showed that the methanol extract of plantain peel had very strong antioxidant activity, and cream preparations could be made with various extract concentrations and the IC50 values of formula 1, formula 2 and formula 3 were 53.81 ppm, 53.29 ppm and 53.21 ppm.