bluuebunny/crossref_metadata_2025 huggingface dataset:
Un silencio tan blanco
Authors: Guzmán Pérez Valeria
Published: December 2024

Poemario ganador del Premio de Literatura Ciudad y Naturaleza José Emilio Pacheco 2024. Está inspirado en los paisajes de la taiga siberiana y el ártico de Alaska, inundados de nieve, en apariencia inhóspitos, aunque poblados por una hermosa fauna que habita estos versos. La autora, Valeria Guzmán Pérez, con sus trazos poéticos, expone bocetos vivos, delicados de un entorno colmado de blancura y silencio, en el que nos sentimos inmersos y en callada, profunda contemplación.
Analysis of Income and Costs in Tobacco Processing Based on Sales Methods in Nagari Baruah Gunuang, Limapuluh Kota Regency
Authors: Syahfitra Muhammad , Nursamsi Nursamsi , Sari Novi Yulanda , Qolby Friskia Hanatul , Mangunsong Agustinus
Published: December 2024

The area of tobacco land in West Sumatra Province, especially in Limapuluh Kota Regency, experienced a quite drastic decline, reaching 66.6% in the period 2022 and 2023. One of the causes declining land is related to prices and income. Low prices and income can be caused by different marketing methods between farmers. Therefore, the research aims to measure income and costs of tobacco processing based on marketing methods. The data analysis method in this research uses descriptive analysis and the Independent T Test. Descriptive analysis aims to describe the costs of processing chopped tobacco, obstacles and factors that influence farmers to sell chopped and spread tobacco. Meanwhile, the t test was carried out to see whether there was a difference in income between farmers who sold chopped and spread. The research results show that farmers' obstacles in processing chopped tobacco are dependence on sunlight, long processing time, and high processing costs. Meanwhile, the factors that influence farmers to sell expanse tobacco are that it is easy and practical, easy to sell, and requires money immediately. In terms of income, there is a significant difference between farmers who sell chopped and farmers who sell overlay. There is a difference in income of IDR 10,132,630/ha/planting season or 37%.
Exploring fourier transformations: benefits, limitations, and applications in analyzing two-dimensional right rectangular prism’s magnetic field
Authors: Jlaiel Khouloud
Published: December 2024

Fourier Transformations are crucial in signal processing, offering a unique approach for complex data analysis. This paper explores their advantages and limitations, explaining key concepts like Fourier Transformation, Fourier series, Discrete Fourier Transform, and Continuous Fourier Transform, focusing on practical applications. The strengths, such as signal decomposition into frequency components, are exemplified through a case study on the total magnetic field of two-dimensional right rectangular prisms. However, limitations arise with non-stationary signals due to the assumption of stationarity. Alternative methods like the Wavelet Transformation and Short-Time Fourier Transformation are briefly discussed. Serving as a practical guide, this paper aids researchers in utilizing Fourier Transformations while recognizing scenarios where alternative techniques may be more suitable.
Comparison of different rock physics models for acoustic velocity
Authors: Hassan Hadeer
Published: December 2024

Unlocking the secrets of rocks is an important task to explore, we require a deep understanding of rock physics. By describing the influence of rock physics on seismic velocities, we attempt to provide a comprehensive understanding of rock physics models and their application to predicting velocities. Throughout the discussion of the most used rock physics models. Moreover, we summarize the results of models using synthetic data to represent relationships between rock physics and elastic moduli. Knowing rock physics models for acoustic waves enhances the interpretation of seismic data, improves reservoir characteristics, aids in fluid identification, and supports uncertainty analysis. However, the choice of model depends on the specific properties of the rock and the application.
Analysis of the earthquake impact on urban tunnels using modelling in Phase 2 software
Authors: Dashti Mahdi , Virág Zoltán
Published: December 2024

This article presents a comprehensive survey of the seismic impact experienced by urban tunnels, with a specific focus on the Line 7 of the Tehran Metro. Employing finite element software during Phase 2 of modeling, the study investigates the potential effects of seismic activity on tunnel stability. The research involves a meticulous examination of concurrent factors, primarily alterations in earthquake acceleration values and adjustments to the depth of the tunnel. The findings reveal that effective maintenance practices within the underground Metro Stations play a crucial role in minimizing the seismic impact on tunnel stability. The study underscores that the key mitigation strategy involves enhancing the structural integrity and reinforcing the conditions under which the tunnel is maintained. By doing so, the article suggests that urban planners and engineers can contribute significantly to the overall resilience and safety of underground metro systems in seismic-prone regions, such as Tehran.
Efektivitas Penerapan Probio_Fmubb Terhadap Pertumbuhan Lele (Clarias Sp.) Pada KJA Kolam Tanah, Bangka Belitung
Authors: Sitanggang Emya Br , Baifa Baifa , Amelia Addela , Adibrata Sudirman , Mardyani Yeyen
Published: December 2024

Catfish feed added with probiotics can affect the growth and health of fish. This study aims to determine the effectiveness of applying Probio_FmUBB to catfish growth. The research was conducted from September to November 2022 for catfish (Clarias sp.) growing-out in the floating fish cages (KJA) owned by CV. Dua Agri Mandiri (CV. DAM) in Petaling Village, West Mendo District, Bangka Regency, Kepulauan Bangka Belitung Province. The sampling method used simple random sampling of catfish in two ponds, fed with probiotic and non-probiotic feed. The results showed that feeds with the addition of the probiotic Probio_FmUBB make differences in the weight and length growth of catfish, where the fish grew faster and heavier than catfish fed with non-probiotic feed. Both catfish groups in the initial phase both showed rapid growth and slowed down in the adult phase. The final measurement showed that catfish with probiotic feed had an average weight of 28.5 grams and an average length of 112.8 cm, while catfish with non-probiotic feed had an average weight of 26.64 grams and an average length of 108.4 cm. It is assumed that the application of Probio_FmUBB probiotics on feed works effectively compared to feed without probiotics. The digestibility showed that the feed with Probio_FmUBB is absorbed Â into nutrients more efficiently by catfish. The water quality in the earthen-pond KJAs shows values that are not considerably different and is still acceptable in the water quality standard criteria for fish farming. The water does not smell, and it is assumed that the ammonia decay at the pond bottoms is not high.
Pengaruh Penambahan Bungkil Inti Sawit Fermentasi Dengan Lama Waktu Berbeda Terhadap Konversi Pakan dan Pertumbuhan Ikan Kelabau (Osteochilus melanopleurus)
Authors: Damanik Maria , Kusdianto Heru , Hardi Esti Handayani , Pagoray Henny , Isriansyah Isriansyah
Published: December 2024

Kelabau (Osteochilus melanopleurus) is one of the local fish found in Borneo. Economically, kelabau fish has a reason to be cultivated because it has a fairly high price. One of the aspects that needs to be considered is the availability of raw materials. This study aimed to evaluate the use of fermented palm kernel meal in feed on feed conversion, growth, and survival of kelabau. The experimental design applied was a Completely randomized design (CRD) with 4 treatments and 3 replicates, namely (P0) no palm kernel meal added; (P2) palm kernel meal fermented for 0 hours, (P3) palm kernel meal fermentaded for 24 hours, and (P4) palm kernel meal fermented for 48 hours. Fish rearing was carried out for 40 days with feeding experimental frequency three times a day with at satiation. TheÂ  fishÂ  wasÂ  kelabauÂ  seeds measuring 4-5 cm and weighing 1-2 g. Ovserved variades tested in this study included feed conversion rasio , growth, and survival rate. The highest growth was resulted byÂ  palm kernel meal fermented for 48 hours, the lowest feed conversion ratio (FCR) was resulted by falm kernel meal fermented 24 hours, and the survival of all treatment during this rearing werw 100%. However statisticaly no significant differences were observed in either/ grow or feed conversion ratio.Â Â Kata kunci: Kelabau; EM4;Â  fermentasi; bungkil inti sawit
Respons Pertumbuhan Ikan Kelabau (Osteochilus melanopleurus) Yang Diberi Pakan Menggunakan Bungkil Inti Sawit Dengan Kadar Yang Berbeda
Authors: Pratama Jordan , Maruf Mohamad , Kusdianto Heru , Susanto Adi , Sukarti Komsanah
Published: December 2024

Osteochilus melanopleurus (Kelabau in Indonesia) is a freshwater fish found throughout Southeast Asia, including Malaysia, Burma, and Indochina. This fish has a relatively high economic value in some locations, thus it has compelling economic motives to be cultivated. One of the most important aspects in fish farming or aquaculture activities is feed availability. Feed ingredients should have adequate nutrient content, abundantly available and inexpensive. Palm kernel meal (PKM) is one of the by-products of palm oil iondustry. Palm kernel meal contains adequate nutrients to be utilized in fish feed, in addition to being abundantly available and affordable. The purpose of this experiment was to examine the growth response of Kelabau fed various quantities of palm kernel meal (5%, 10%, 15%, and 20%). The results showed that 10% palm kernel meal inclusion produced the highest growth, daily growth rate, specific growth rate, and feed conversion ratio. However, statistical analysis showed that the addition of palm kernel meal had no effect on growth or the feed conversion ratio.Â Â
Use of Different Dosages of Gonadotrophine Hormones For Java Combtail (Belontia hasselti) Spawning Semi Naturally
Authors: Yonarta Danang , Selviana Ingka , Tanbiyaskur Tanbiyaskur , Sari Dwi Inda
Published: December 2024

Java combtail (Belontia hasselti) is a fish originating from swamps that is widely used by the community and needs to be developed through hatchery cultivation. The Kelekar II Farmer Group in Burai Village, Tanjung Batu District, Ogan Ilir Regency is one of the farmer groups that still relies on seasonal harvests from nature. Excessive agility fishing activities can threaten the extinction of the java combtail population. Research purpose to determine the effect of giving different gonadotrophine hormone on the semi-natural spawning of java combtail (Belontia hasselti) in Burai village, Tanjung Batu District. This research was carried out in Burai Village, North Indralaya, Ogan Ilir Regency, South Sumatra, in September-November 2022. The spawning of the java combtail used a different dose in treatment 1 (P1) by injecting the gonadotropin hormone at a dose of 0.3 ml kg-1 fish weight and treatment 2 (P2) by injecting gonadotropin hormone dose of 0.5 ml kg-1 fish weight. The research results obtained the best dose of 0.5 ml kg-1 resulting produced a fecundity at 2.677 eggs, hatching time at 24 hours, fertilization rate at 75%, hatching rate at 93% and Survival Rate (SR) at 80.8%. Water quality obtained in this research activity is a temperature ranged from 25.9-32.0 oC, pH 5.1-6.65, DO 3.1-6.65 mg L-1 and ammonia 0.051-0.121 mg L-1.
Efektivitas PenamEfektivitas Penambahan Probiotik Komersial “Lacto-Bact” Pada Pakan Terhadap Pertumbuhan Ikan Lele Dumbo (Clarias gariepinus)bahan Probiotik Komersial “Lacto-Bact” Pada Pakan Terhadap Pertumbuhan Ikan Lele Dumbo (Clarias gariepinus)
Authors: Safratilofa Safratilofa , Syahrizal Syahrizal , Ahmad Aisah
Published: December 2024

This research aims to determine the effectiveness of adding probiotics to feed on the growth of African catfish (C. garipenus). The study used a completely randomized design with 4 treatments and 3 replications, including feed without probiotics (A/control), Probiotic dose 4 ml/kg feed (B), Probiotic dose 8 ml/kg feed (C) and Probiotic dose 12 ml/kg feed (D). The test fish that will be used are African catfish seeds measuring 4.22 cm - 4.71 cm. The main test material that will be used is probitic (Lacto-Bact) in the form of flour which is dissolved in distilled water at a dose of 2% kg of feed. The containers used in this research were 12 aquariums measuring 70x40x30 cm with a water volume of 24 L. The parameters observed in this research included feed conversion ratio (FCR), absolute weight growth (PBM), absolute length growth (PPM), survival, proximate test of feed and water quality. The results of the research showed that there was a very significant development in the length and average length. The initial weight of fish at stocking ranged from 0.83-0.89 g/head and increased by 184.89%-333.88% to 2.37-3.81 g/fish. The initial average length of the test fish at the time of stocking ranged between 4.22-4.72 cm/fish and increased by 59.14% - 67.39% to 6.72 - 7.89 cm/fish. The FCR value ranges between 1.33-3.23. PBM values ranged from 1.54-2.93 g/head. PPM values range between 2.50-3.18 cm/head. The SR value ranges between 81.39% - 88.89%. The highest protein content in treatment D was 23.6015%. Feed protein for all types of feed treatment varies relatively in the range of 17.5058%-23.6015%. The results of the water quality analysis of the rearing media show that the water quality is still within the appropriate range for rearing African catfish.
Peforma Abnormalitas, Pertumbuhan dan Kelangsungan Hidup Larva Ikan Jelawat (Leptobarbus hoevenii Blkr) Yang Dipelihara Pada Media Air Dengan Jumlah Titik Aerasi Berbeda
Authors: Arifin M Yusuf , Harianto Eko , Dilla Risma
Published: December 2024

The low oxygen content in the rearing medium causes the larvae of jellyfish to become abnormal, growth is disturbed, and the survival rate is low. The study used a Complete Random Design (RAL) with 4 (four) treatments, namely A: 1 (one) aeration point, B: 2 (two) aeration points, C: 3 (three) aeration points, D: 4 (four) aeration points. Each treatment was carried out 3 times. The results showed that the difference in the number of aeration points given during the rearing of jellyfish larvae had a real effect on the abnormality and performance of the growth of larvae (Leptobarbus hoevenii Blkr). The best treatment for this study was treatment A with the number of aeration points used as much as 1 aeration point for the maintenance of jellyfish larvae (Leptobarbus hoevenii Blkr) in an aquarium with an Absolute Weight Growth (PBM) value of 0.492gr/head, Absolute Length Growth (PPM) 2.97cm/head, abnormality rate of 0.83%, Survival Rate
Kombinasi Trichokompos Tithonia dan Pupuk NPK dalam Meningkatkan Pertumbuhan dan Hasil Bawang Merah (Allium ascalonicum L.)
Authors: Ichwan Budiyati , Lestari Ardiyaningsih Puji , Eliyanti Eliyanti , Zulkarnain Zulkarnain , Arrahman Rinza
Published: December 2024

The development and increase of shallot production in Ultisol dry land is hampered by its relatively low fertility.  Efforts that can be made are by adding organic material derived from plants such as Tithonia diversifolia (paitan/kipahit/insulin leaf) which is composted by adding trichoderma, to increase the soil's ability to hold water, increasing soil organic carbon,  soil nutrient availability, and  growth, and crop yields. The use of tithonia trichocompost as a soil ameliorant can not only increase soil fertility but also reduce the use of NPK fertilizer. This research aims to examine the effect of a combination of tithonia trichocompost and NPK fertilizer on the growth and yield of shallots.  Research location at Teaching and Research Farm, Faculty of Agriculture, Jambi University (35 m above sea level). The research used a Randomized Block Design with five combination treatments of tithonia trichocompost  and NPK fertilizer (percentage based on recommended dose), namely: 0% tithonia trichocompost + 100% NPK; 25% tithonia trichocompost + 75% NPK; 50%  tithonia trichocompost + 50% NPK; 75% tithonia  trichocompost  + 25% NPK; 100% tithonia trichocompost. The recommended dose used is 20 tonha-1 tithonia trichocompost and 400 kgha-1 NPK fertilizer (16:16:16). The research was repeated five times. The research results showed that various combinations of tithonia trichocompost and NPK fertilizer that were tried increased plant growth and yield, and as the percentage of tithonia trichocompost increased, plant growth and yield increased. 100% tithonia trichocompost gave the highest yield, 44.123 g per hill or 7.7 tons ha-1 (if land use efficiency was 70% with a plant spacing of 20 cm x 20 cm). Although this yield is lower than the potential yield of shallots, which is 9.5 tonha-1, the use tithonia trichocompost as a soil ameliorant can replace NPK fertilizer.Keywords: ameliorant, organic matter, Ultisol dry land, water avaibility
Efektifitas Waktu Pengendalian Gulma dan Penggunaan Mulsa Jerami Padi Terhadap Pertumbuhan dan Hasil Tanaman Kedelai Edamame (Glycine max (L.)
Authors: Saputra Muhammad Rizki , Sarman Sarman , Rainiyati Rainiyati , Swari Elly Indra
Published: December 2024

Soybeans are one of the important food crop commodities in Indonesia and have strategic value because they are able to supply the nutritional needs of the community and as a source of income for farmers. One of the causes of low edamame soybean cultivation is low production caused by the presence of weeds in the cultivation area. The aim of this research is to find out how effective the use of rice straw mulch and weed control is to increase the growth and yield of edamame soybean plants. A factorial Randomized Block Design (RBD) was used for this research. The first factor in RAK is the weed control time with three levels, namely p0 = no control, p1 = 2x control (18 DAP and 36 DAP), and p2 = 1x control (32 DAP). The second factor is the use of straw mulch with three levels, namely m0= no mulch, m1= 5 tons/ha of straw mulch, and m2= 10 tons/ha of straw mulch. Observed variables included plant height, flowering age, number of primary branches per plant, number of pods per plant, and fresh pod weight. The research results show that using five tons of mulch per ha and controlling weeds once can increase the yield and growth of edamame soybeans while reducing weed growth. Kata Kunci: Pengendalian Gulma, Kedelai Edamame, Mulsa Jerami
Analisis Pendapatan dan Rentabilitas UMKM Keripik Singkong di Desa Bukit Peninjauan I Kecamatan Sukaraja Kabupaten Seluma (Studi Kasus PT. Rizky Jaya Sampurna)
Authors: Sari Nur Phita , Feni Rita , Efrita Edi , Marwan Edy , Mulyadi Maheran
Published: December 2024

Casava crackers are commonly produced snack by SMEs, one of which is PT. Rizky Jaya Sampurna. This study aims to analyze revenue and rentability of casa crackers at PT. Rizky Jaya Sampurna. The data used in this study is primary and secondary data. Primary data obtained by using interview through questionnaire to the owners of PT. Rizky Jaya Sampurna while secondary data obtained from relevant bodies. The data collected in this study comprised investment cost, fixed cost, variable cost, production, and price. Data analysis consisted of cost analysis, revenue, R/C ratio, B/C ratio, profile rate, pay back period and rentability. The result shows that total cost is Rp31.535.019,44, revenue is Rp12.984.980,56 per month, R/C ratio is 1,41, B/C ratio is 0,41, profile rate is 41,2%, payback period is 6 years 6 month and 27 days and rentability is 14,6%. The study concluded that casava crackers SMEs by PT. Rizky Jaya Sampurna is not feasible for long term production based on below one B/C ratio, but the business is already profitable and efficient.
Analisis Daya Saing Ekspor Kakao Indonesia Ke Negara Mitra Perdagangan Utama Periode 2012 - 2021
Authors: Fadillah Fadillah , Wulandari Siti Abir , Zainuddin Zainuddin
Published: December 2024

The purpose of this study was to determine the export development of Indonesian cocoa beans and cocoa powder on the international market in 2012-2021 and to analyze the development of export competitiveness of cocoa beans and cocoa powder. Indonesia in the international market in 2012-2021. In this research, the export destination of cocoa beans is to Malaysia, while the export destination of cocoa powder is to India, China, the Philippines and Malaysia. The analysis used in conducting this research is using Revealed Comparative Advantage (RCA), Export Competitive Index (ECI) and Trade Specialization Index (ISP). Based on research results. The average value of RCA, ECI and ISP exports to Malaysia in the 2012-2021 period is 2.79; 0.90 ; 0.48 > 0, which means that Indonesia has a comparative advantage, is competitive and is positioned as an exporter of cocoa beans to Malaysia. the research results for cocoa powder have an average RCA, ECI and ISP value of 14.38 respectively; 1.05 ; 0.99 to China, 18.09 ; 1.13 ; 1.00 to India , 11.22 ; 1.11 ; -0.27 to Malaysia, 5.72 ; 1.01 ; 1.00 to the Philippines which means that within the four countries Indonesia has a comparative, competitive advantage and is able to act as a cocoa powder exporting country, except for Malaysia where the ISP score of Indonesia is negative.
Analisis Usaha Pengembangan Agroforestri Pada Hutan Kemasyarakatan (HKm) Melalui Pinjaman Kredit Usaha Rakyat (KUR) di Desa Air Terjun Kabupatan Kerinci Provinsi Jambi
Authors: Fazriyaz Fazriyaz , Ahyauddin Ahyauddin , Nurmansah Rahmad , Putri Adela Salsabila
Published: December 2024

Community Forestry is one of the social forestry schemes in an effort to resolve land conflicts and forest and land rehabilitation (RHL) problems in State Forest Areas. Apart from that, Community Forests also provide opportunities for local communities who have lived around forest areas for generations to be able to use area land for business activities in planting both seasonal crops and forestry plants. The fundamental problem in supporting communities in managing state forest land is the lack of capital to invest as output costs during management activities. Through the KUR loan facility, it is hoped that people who are members of social forestry management groups can make it easier to use as initial capital to invest. This research will be carried out in the Community Forest (HKm) in Air Terjun Village, Kerinci Regency, Jambi Province. This research consists of several studies and uses analysis of several investment criteria, including Net Present Value (NPV), Net Benefit Ratio (B/C Ratio), Internal Rate of Return (IRR), which is an indicator to find out the level of efficiency of an investment, and Payback Period (PP). Analysis of the feasibility of cultivating agroforestry patterns shows that the Net Present Value (NPV) value in years 1 to 10 is greater than 0, which means it is worth cultivating, while the Net B/C Ratio calculation value in years 1 to The 10th year gets a value greater than 1, meaning it is worth pursuing, while the IRR value in years 1 to 10 gets a percentage value greater than 10%, meaning it is worth investing in. Meanwhile, the Payback Period value (investment return time) is 0.23 years.
Hubungan Kesejahteraan Dengan Sikap Petani Dalam Menentukan Metode Peremajaan Kelapa Sawit di Kelurahan Kampung Singkep Kecamatan Muara Sabak Barat Kabupaten Tanjung Jabung Timur
Authors: Pernanda Merta , Kemala Nida , Alawiyah Wiwin
Published: December 2024

This research was carried out in Kampung Singkep Village, Muara Sabak Barat District, East Tanjung Jabung Regency. This research aims to look at farmers' decisions in determining the rejuvenation method in cultivating oil palm plants that they will carry out. The scope of this research focuses on the relationship between welfare and farmers' attitudes in determining the choice of rejuvenation method. Data collection was carried out in May 2023. The type of data used based on time is cross section data equipped with primary and secondary data. The sample numbered 73 from a population of 275 farmers. The relationship between the two variables above was analyzed using the Chi square analysis tool. The research results showed that the number of prosperous farmers was 61 farmers (83.56%) while the less prosperous farmers were 12 farmers (16.44%). Farmers who chose the total uprooting method were higher than farmers who chose the insert rejuvenation method. The total number of farmers who chose to tumble was 59 farmers (80.82%) while the number of farmers who chose the insert method was 14 farmers (17.18%).  Both less prosperous and more prosperous farmers choose the method of rejuvenation by completely uprooting. There is a relationship between family welfare and farmers' attitudes in determining oil palm rejuvenation methods.Keywords: Oil palm; Welfare;  Rejuvenation; Attitude; Relationship Abstrak. Penelitan ini dilaksanakan di Kelurahan Kampung Singkep, Kecamatan Muara Sabak Barat Kabupaten Tanjung Jabung Timur. Penelitian ini bertujuan untuk melihat keputusan petani dalam menentukan metode peremajaan  dalam budidaya tanaman kelapa sawit yang akan mereka lakukan. Ruang lingkup pada penelitian ini terfokus pada hubungan antara kesejahteraan dengan sikap petani dalam menentukan pilihan metode peremajaan. Pengumpulan data dilakukan dalam bulan Mei 2023. Jenis data yang   digunakan  berdasarkan waktu adalah   data cross section dilengkapi dengan data primer dan sekunder. Sampel berjumlah 73 dari populasi 275 petani. hubungan antara dua variabel di atas dianalisis menggunakan alat analisis Chi kuadrat. Hasil penelitian menunjukkan bahwa jumlah petani sejahtera sebanyak 61 petani  (83,56%) sedangkan petani kurang sejahtera sebanyak 12 petani (16,44%). Petani yang memilih metode tumbang total   lebih tinggi dibandingkan petani yang memilih peremajaan metode sisip. Jumlah petani yang memilih tumbang total sebanyak 59 petani (80,82 %) sedangkan petani yang memilih metode sisip sebanyak 14 petani (17,18%).  Baik petani yang kurang sejahtera maupun yang sejahtera kedua-duanya lebih banyak memilih metode peremajaan dengan tumbang total. Terdapat hubungan antara kesejahteraan     keluarga dengan sikap petani dalam menentukan metode peremajaan kelapa sawit.  Kata Kunci : Kelapa Sawit; Kesejahteraan; Peremajaan; Sikap; Hubungan
ВИЗНАЧЕННЯ ОПТИМАЛЬНОЇ ПЕРІОДИЧНОСТІ ТЕХНІЧНОГО ОБСЛУГОВУВАННЯ СИСТЕМИ ПОЖЕЖНОЇ СИГНАЛІЗАЦІЇ ТА ОПОВІЩУВАННЯ НА ВІЙСЬКОВИХ ОБ’ЄКТАХ ЗБЕРІГАННЯ БОЄПРИПАСІВ (АВІАЦІЙНИХ ЗАСОБІВ УРАЖЕННЯ)
Authors: Авраменко Олександр , Сарапін Юрій , Яблонський Петро , Федоров Олексій
Published: December 2024

В роботі досліджено актуальне питання підвищення надійності систем пожежної сигналізації та оповіщування (СПСО) на об’єктах зберігання боєприпасів (авіаційних засобів ураження).
З використанням напівмарковського випадкового процесу побудовано математичну модель експлуатування СПСО, здійснено аналітичні розрахунки середнього часу перебування СПСО у справному стані, у будь-якому стані та частоти потрапляння випадкового процесу до різних станів, що дозволяє знайти значення коефіцієнта технічного використання з урахуванням різних параметрів експлуатування систем. Запропонований метод математичного моделювання передбачає застосування дифузійного немонотонного закону розподілу часу перебування СПСО у станах моделі. На основі отриманих аналітичних залежностей можливо знайти максимальне значення коефіцієнта технічного використання, що відповідатиме оптимальній періодичності технічного обслуговування СПСО.
Отримані в роботі результати можуть бути використані для розробки методики підвищення ефективності експлуатування СПСО за рахунок визначення оптимальної періодичності проведення їх ТО, що сприятиме підвищенню надійності СПСО на військових об’єктах зберігання боєприпасів (авіаційних засобів ураження) та в довгостроковій перспективі покращить рівень захисту цих об’єктів від виникнення надзвичайних ситуацій техногенного характеру.
Effect of Friction Stir Welding on Mechanical Properties and Formability of Aluminum Alloy-AA1100
Authors: Singh Manish , Singh Pankaj Kumar , Kumar Mandeep , Kumar Parveen , Singh Surendra
Published: December 2024

This study investigates the influence of friction stir welding (FSW) on the mechanical properties and formability of thin aluminum alloy sheets for automotive applications. The feasibility of a novel technique, pinless FSW, for joining aluminum sheets was demonstrated. Defect-free welds were successfully achieved using parameter sets R1 (450 rpm, 80 mm/min, 8 mm), R4 (560 rpm, 160 mm/min, 8 mm), and R7 (710 rpm, 250 mm/min, 8 mm). The welded region exhibited an outward material flow due to the stirring action of the FSW tool. Microhardness measurements were conducted in the transverse direction of the weld and along the depth from the top to the bottom at the weld center. Hardness values exhibited variation from the weld zone centerline to the heat-affected zone (HAZ). Lower hardness values were observed at the center of the weld zone, whereas higher hardness values were recorded in the HAZ. The transverse and longitudinal tensile properties of the welds were evaluated at room temperature. The tensile tests revealed that the welded samples failed outside the weld region. To assess the ductility of the FSW welded samples, formability tests were performed, indicating an increase in ductility within the welded area.
ОСОБЛИВОСТІ ВИКОРИСТАННЯ МУЛЬТИМЕДІЙНИХ ЗАСОБІВ НАВЧАННЯ ДЛЯ РЕАЛІЗАЦІЇ ІНДИВІДУАЛЬНОЇ ТРАЄКТОРІЇ РОЗВИТКУ ОСІБ З ОСОБЛИВИМИ ОСВІТНІМИ ПОТРЕБАМИ
Authors: Сергеєва Наталія
Published: December 2024

У статті визначено сучасну проблематику використання мультимедійних засобів навчання, як можливість індивідуалізації освіти та побудови індивідуальної освітньої траєкторії розвитку дітей з особливими освітніми потребами. Розглянуто та проаналізовано досвід зарубіжних та вітчизняних педагогів щодо можливостей використання мультимедійних засобів навчання в освітньому процесі. Характеризуються основні шляхи впровадження та існуюча проблематика практичної реалізації та застосування мультимедійних засобів навчання в освіті дітей з ООП. Метою статті є аналіз сучасних мультимедійних засобів навчання для індивідуалізації освіти та побудови індивідуальної освітньої траєкторії розвитку дітей з особливими освітніми потребами та визначення найбільш ефективних серед наявних засобів. Для досягнення поставленої мети та розкриття тематики були використані методи аналізу, систематизації, порівняння та узагальнення. Мультимедійні засоби, такі як інтерактивні програми, аудіовізуальні матеріали, віртуальна та доповнена реальність, сприяють кращому розумінню навчального матеріалу за допомогою залучення кількох сенсорних каналів одночасно. Серед ключових досягнень використання мультимедіа в навчанні дітей з особливими освітніми потребами можна виділити: підвищення рівня мотивації та залученості; яскраві наочні матеріали та інтерактивні елементи, які допомагають зробити навчання цікавим і привабливим; завдяки застосуванню мультимедійних засобів навчання реалізується індивідуалізація навчання, адже за допомогою адаптивних програм кожна дитина може навчатися у власному темпі та отримувати підтримку, яка відповідає її потребам.
Uso de la APP Carmín Lite en el aprendizaje de electromecánica
Authors: Vargas Vera Cruz María , Robalino Guevara Ángel Vicente , Anzules Ballesteros Juan Eduardo , Maliza Cruz Wellington Isaac
Published: December 2024

Introducción: Este estudio examina cómo esta herramienta puede impactar de manera positiva el aprendizaje en estudiantes de formación técnica en electromecánica. Metodología: Se realizó un estudio cuantitativo cuasi-experimental sin grupo control con una muestra de 120 estudiantes de electromecánica automotriz. Se aplicaron encuestas con escala Likert para evaluar percepciones sobre cinco dimensiones: interactividad, facilidad de uso, diversión, efectividad percibida y aplicabilidad de la app. La validez y confiabilidad del instrumento fueron verificadas mediante un piloto y el cálculo del coeficiente alfa de Cronbach (0.98). Los datos se analizaron mediante estadísticas descriptivas y el coeficiente de correlación de Spearman, con un software estadístico, para identificar la relación entre el uso de la app y el desarrollo de habilidades en electromecánica. Objetivo: El objetivo general fue el conocer el impacto de la App Carmín Lite en el método de enseñanza. Resultados: los hallazgos mostraron una fuerte correlación positiva (r = 0,823, p < 0,01) entre el uso de la aplicación y la mejora en las habilidades prácticas y teóricas de los estudiantes. La mayoría de los estudiantes percibieron la aplicación como interactiva y fácil de usar, y reportaron mejoras en la comprensión de conceptos (75%) y habilidades prácticas (75%). La investigación también revisó antecedentes y teorías sobre el aprendizaje interactivo, encontrando que las herramientas digitales, como las aplicaciones móviles y simuladores, son efectivas para la educación técnica. Estos resultados son consistentes con estudios previos que destacan la eficacia de los materiales didácticos digitales y simuladores en mejorar el aprendizaje en áreas técnicas. Conclusiones: en conclusión, la APP Carmín Lite demuestra ser una herramienta valiosa para la enseñanza de la electromecánica automotriz, respaldada tanto por los datos empíricos como por la literatura existente, y tiene el potencial de mejorar significativamente el rendimiento académico y las competencias prácticas de los estudiantes. Área de estudio general: Educación. Área de estudio específica: Entorno Digital. Tipo de artículo: Original.
Use of Antimicrobials in Food Animal Production and Their Impact on Human Health and Environment
Authors: Ahmed Mejbah Uddin
Published: December 2024

Abstract not available
J Enam Med Col 2021; 11(3): 140-142
Clinico-demographic Profile and Outcome of COVID-19 Patients Admitted in the ICU of Enam Medical College Hospital
Authors: Begum Nasima , Rahman Nelufa Tahera , Khanum Easnem , Islam Md Ashraful , Haque Md Rezaul
Published: December 2024

Background: COVID-19 is an acute respiratory disease caused by a novel coronavirus (SARS-CoV-2) which first emerged in China in December 2019. Then it rapidly spread globally including Bangladesh with devastating damage to the public health. The aim of the study was to describe the demographic characteristics, clinical features and outcome of COVID-19 patients admitted into the ICU of Enam Medical College Hospital (EMCH) from 1 February 2021 to 30 April 2021. Materials and Methods: It was a prospective observational study with a convenient sampling technique. Separate preset questionnaire was used to collect the data. RT-PCR for Covid-19 positive cases were included and the patients who did not complete the treatment were excluded from the study. Data regarding demographic, clinical and laboratory parameters, management and outcome of 105 COVID-19 patients were collected and analyzed. Results: Total 136 patients were admitted during the study period. Among them 105 patients were RT-PCR positive. The mean age of the patients was 55.12±12.7 years with 60.9% male and 39.0 % female. Majority of them (70.4%) came from urban areas and 46.6% were from upper socio-economic clas; 57.1% were smokers and 42.8% were non-smokers. Fever (95.2%), cough (90.47%), anosmia (61.9%), dyspnea (58.0%), fatigue (40%) and diarrhea (23.8%) were the predominant symptoms. Common comorbidities were diabetes mellitus (89, 84.7%), cardiac disease (88, 83.8%), hypertension (85, 80.9%), chronic obstructive pulmonary disease (72, 68.5%), and renal disease (18, 17.1%). Oxygen was delivered through high flow nasal cannula (38%), non-invasive ventilation (33%) and mechanical ventilation (40.9%). Only 16.1% received two doses of COVID-19 vaccine. Majority of the patients (56.1%) stayed for 1−7 days with a mean duration of ICU stay 9.09±5.9 days. Total 61 patients (58.09%) died due to COVID-pneumonia with a mortality rate 58.09%. Conclusion: In spite of appropriate care and ICU support, the mortality of COVID-19 was high. So, in order to prevent the disaster of the disease mass education about basic sanitation, personal hygiene, social distancing and mass vaccination should be ensured. Special attention should be provided to aged patients with comorbidities.
J Enam Med Col 2022; 12(1): 43−49
Reviewers in this Issue Vol 12(1)
Authors: Cheif Editor In
Published: December 2024

Abstract not available 
J Enam Med Col 2022; 12(1): 60
Retrospective Review and Analysis on Outcome of Cranioplasty: A Series of 38 Cases
Authors: K M Bazlul Karim  , Riad Habib  , Abu Tahir Mohammad Sahidullah Monsur  , Mithun Kumar Dey  , Atique Bin Hussain  , Adnan Moasir Hasnine  , Mamun Reza  , Dibakar Chaudhury  , Md Rezwan Radid  , Akas Biswas  , Kawshik Ahmed  , Mir Shamsad Hossain  , Aziza Khatun  , Md Arif Hasan  , Kazi Shahabulbul Islam  , Md Ashiqul Muhit Khan  , Md Ifran Ahmed
Published: December 2024

Background: Cranioplasty is a straightforward procedure; it may result in a significant number of complications. These include infections, seizures, intracranial hematomas, and others. Objective: To evaluate the outcome following cranioplasty with titanium mesh-plate and screw. Materials and Methods: This retrospective study included patients who underwent decompressive craniectomy due to traumatic brain injury with raised intracranial pressure, acute subdural hematoma, compound comminuted skull fracture and intracranial hemorrhage, between January 2019 to December 2020 at Enam Medical College Hospital, Savar, Dhaka. Data were collected in pre-designed data collection sheet and were analyzed using computer-based programme statistical package for social science (SPSS) windows version 25.0. Results: This study showed maximum patients (34.2%) were between 21-30 years age. Majority (89.5%) were male and only 5.9% were female. Overall rate of complications was 10.5%. Among them new onset seizure was four, indrawing of skin through bone gap was four, hemorrhage was two, infection was one, hydrocephalus was one, and exposed implant also one. Conclusion: We have found the outcome of cranioplasty was better with titanium mesh plate and screw than conventional fixation of bone with polyglactin, polypropylene suture and titanium miniplate and screw. With polypropylene and polyglactin there is more chance of inward displacement of bone fragment and with miniplate and screw there is still chance of indrawing of bone fragment through the bone gap.
J Enam Med Col 2022; 12(2): 90−94
A eficácia dos inibidores da acetilcolinesterase no tratamento de pacientes com demência de Parkinson
Authors: Santana João Pedro Nogueira , Tôrres Samuel Gueiros Behar , Ferreira Vitor Mendes , Cavalcanti João Victor Correia , Barros Pedro Henrique Padilha , Ramos João Pedro de Castro , Horta Wagner Gonçalves
Published: December 2024

A Doença de Parkinson é um distúrbio neurodegenerativo associado principalmente à idade mais avançada, tendo com uma de suas comorbidades a demência parkinsoniana. Uma das alternativas para o tratamento dessa demência atualmente é o uso dos medicamentos inibidores da acetilcolinesterase (AChEs), que apresenta um potencial de melhora dos sintomas demenciais. O presente estudo tem o objetivo de apresentar, por meio de uma revisão integrativa, a eficácia dos AChEs para o tratamento da demência causada pela doença de Parkinson que afeta a qualidade de vida dos pacientes. Os resultados encontrados demonstram que o início precoce e contínuo da terapia com AChEs melhora os sintomas psicóticos, principalmente, os delírios e alucinações. Assim, o estudo chega à conclusão que a terapia com AChEs demonstra-se como promissora, necessitando de mais estudos para avaliar os desfechos a longo prazo e consolidar os achados deste artigo.
Analisis Efisiensi Solar Charge Controller Menggunakan Integrasi Numerik dengan MATLAB Simulink
Authors: Sikumbang Rama Widjaya
Published: December 2024

Konsumsi energi global diperkirakan akan terus meningkat seiring dengan pertumbuhan populasi manusia dan kemajuan teknologi. Memang, permintaan energi diperkirakan akan semakin meningkat sebesar 45 persen antara tahun 2015 dan 2030, dengan laju rata-rata 1,6 persen per tahun, dengan energi matahari atau energi sel surya menjadi salah satu alternatif yang paling menarik. Sistem surya atau fotovoltaik (PV) telah menerima banyak perhatian dalam penelitian dan industri sebagai sumber energi bersih alternatif. Oleh karena itu, diperlukan solar charge controller untuk menstabilkan keluaran sel surya. Salah satu komponen terpenting dari panel surya adalah solar charge controller (SCC). Solar charge controller diklasifikasikan menjadi tiga jenis: ON/OFF, modulasi lebar pulsa (PWM), dan pelacakan titik daya maksimum (MPPT). MPPT menjadi semakin populer karena kemampuannya yang tinggi untuk mengekstrak daya dari panel surya. Tujuan dari penelitian ini adalah untuk menghitung nilai efisiensi dan membandingkan dua jenis SCC, PWM dan MPPT. Tujuan penelitian adalah Konsumsi energi global meningkat seiring pertumbuhan populasi dan kemajuan teknologi. Energi matahari menjadi salah satu alternatif energi bersih. Solar Charge Controller (SCC) penting untuk menstabilkan keluaran daya dari panel surya. Penelitian ini membandingkan efisiensi SCC jenis PWM dan MPPT menggunakan simulasi MATLAB Simulink, dengan fokus pada pemahaman dan penerapan integrasi numerik. PWM memiliki efisiensi rata-rata 31.25% dan MPPT memiliki efisiensi rata-rata 72%. Serta total energi yang dikumpulkan oleh panel surya selama periode waktu tertentu adalah sekitar 0.6735 watt-seconds (W.s). Menurut analisis data, MPPT lebih efisien daripada PWM. Hasilnya, ditentukan bahwa MPPT adalah pengontrol muatan surya yang lebih efisien dari keduanya.
MACROSEISMIC AND MICROSEISMIC ANALYSIS OF M4.4 BATANG EARTHQUAKE, July 7, 2024
Authors: Wibowo Nugroho Budi
Published: December 2024

On July 7, 2024, an M4.4 earthquake affected Batang, Warungasem, and Wonotunggal sub-districts, causing minor to major damage to houses. This study intends to conduct macroseismic and microseismic studies in the earthquake-affected zone. Macroseismic analysis involves determining the amount of building damage on the MMI intensity scale, whereas microseismic analysis relies on dominant frequency characteristics (fo), amplification factor (Ao), and local geology. Macroseismic study indicates that the Batang earthquake had an intensity of III-IV MMI. The amount of light-to-heavy building damage does not affect the earthquake intensity (MMI) number. This is because the destroyed structures were constructed in a simplistic manner and were not earthquake-resistant. Microseismic investigation revealed that the Alluvium Plain had the dominating distribution of damage, with fo values <3.4 Hz and Ao >4.8. Aside from building quality, local geological variables have an impact on earthquakes on the surface.
IDENTIFIKASI INDIKATOR DESAIN HUNIAN SEMENTARA DARI PERSPEKTIF KORBAN BENCANA
Authors: Sari Sely Novita , Winarno Setya , Nugraheni Fitri
Published: December 2024

Indonesia sering mengalami bencana alam seperti gempa bumi, tsunami, gunung berapi, banjir, dan tanah longsor, yang mengakibatkan kerugian signifikan. Pada setiap kejadian bencana, banyak rumah tinggal yang hancur sehingga kebutuhan hunian sementara yang cepat bangun pada saat kondisi tanggap darurat sangat diperlukan. Desain hunian sementara yang sering dipakai saat ini sering tidak mempertimbangkan kebutuhan-kebutuhan khusus dari korban bencana. Penelitian ini bertujuan untuk mengidentifikasi faktor- faktor desain hunian sementara dari perspektif korban bencana. Penelitian ini menggunakan metode kuesioner yang diberikan kepada responden berjumlah 6 orang dari BPBD Kabupaten Bantul, 11 orang Masyarakat terdampak relokasi bencana longsor, 7 orang yang terkena relokasi bencana gempa Bantul dan 8 orang masyarakat yang telah memiliki pengalaman tinggal di hunian sementara. Dalam penelitian ini, Algoritma Artificial Neural Network (ANN) digunakan sebagai alat untuk menganalisis data responden. hasil pemodelan metode ANN, dapat disimpulkan bahwa terdapat identifikasi faktor-faktor desain hunian sementara berdasarkan perspektif korban bencana terbesar pada indikator Kemudahan Interaksi Sosial yang memiliki presentasi sebesar 33,33%, dilanjutkan dengan indikator Kekuatan Bangunan sebesar 23,33%, 2 faktor selanjutnya adalah Kenyamanan Penghuni dan Kemudahan Pembangunan dengan nilai 20% dan faktor terendah adalah Kecepatan Pembangunan yang memiliki presentasi sebesar 3,33%.
SIMULASI PROSES PENGECORAN DALAM TAHAPAN REVERSE ENGINEERING TOOLPOST MESIN BUBUT KONVENSIONAL
Authors: Dwiyanto Agus , Hasanudin  , Setiawan Muhammad Diki , Kurniawan
Published: December 2024

Reverse engineering merupakan inovasi dalam pembuatan produk. Produk yang  telah ada dianalisis untuk dilakukan pengembangan produk atau meningkatkan performa. Penelitian ini difokuskan pada penerapan metode reverse engineering untuk membuat toolpost, mengingat kebutuhan suku cadang toolpost mesin bubut konvensional masih bergantung pada impor dan seringkali tidak tersedia dipasaran karena pabrikan sudah tidak ada. Tahapan yang dilakukan meliputi pengumpulan informasi produk, analisis fitur fungsional, pengukuran dan pemodelan toolpost serta analisis keterbuatan melalui simulasi pengecoran. Simulasi pengecoran ini bertujuan untuk mengidentifikasi potensi cacat yang akan terjadi, sebelum desain toolpost akan diwujudkan dalam produk jadi. Hasil simulasi menunjukkan total cacat porositas sebesar 2% dengan lokasi cacat yaitu pada area gating system dan area lubang pada toolpost. Meskipun terdapat cacat, persentase dan lokasi cacat tersebut dapat dianggap tidak akan mempengaruhi keberfungsian dari toolpost. Waktu tuang optimal yaitu 2,38 detik dan waktu pendinginan yaitu 201,3 detik untuk mencegah terjadinya retak dan deformasi.
Challenges in Diagnosing Radiographic Axial Spondyloarthritis: A Case Study of a Young Adult in a Secondary-Level General Hospital in Guayaquil, Ecuador
Authors: Acuria Lady Wendy Gaibor , Cano Galo Guillermo Farfán , Fernandez Carla V Moncayo , Cevallos Carlos R. Cedeño
Published: December 2024

Radiographic axial spondyloarthritis is a chronic autoimmune disorder primarily affecting the axial skeleton, causing pain, stiffness, and, in advanced cases, structural damage. Its varied clinical presentation complicates diagnosis, particularly in resource-limited settings like secondary-level hospitals in Ecuador. This report details the case of a 34-year-old female initially misdiagnosed with seronegative rheumatoid arthritis and treated with methotrexate, hydroxychloroquine, and corticosteroids. Despite treatment, her symptoms persisted until an MRI, limited by unavailable STIR sequences, confirmed left-sided sacroiliitis. The case was further complicated by idiopathic sudden hearing loss, severe hip involvement, and osteopenia. Cultures were negative, and the diagnosis was ultimately based on clinical criteria and imaging findings. This case highlights the challenges of diagnosing radiographic axial spondyloarthritis in resource-limited settings, and underscores the importance of interdisciplinary evaluation to avoid diagnostic delays and long-term disability.