bluuebunny/crossref_metadata_2025 huggingface dataset:
A new trigonometric identity with applications
Authors: Sun Zhi-Wei , Pan Hao
Published: November 2024

In this paper we obtain a new curious identity involving trigonometric functions. Namely, for any positive odd integer $n$, we prove that $$\sum_{k=1}^n(-1)^k(\cot kx)\sin k(n-k)x=\frac{1-n}2,$$ which is equivalent to the identity $$\sum_{k=1}^n(-1)^kU_{n-k}(\cos kx)=-\frac{n+1}{2},$$ where $U_m(z)$ stands for the $m$th Chebyshev polynomial of the second kind. As a consequence, for any positive odd integer $n$ and positive integer $m$, we obtain the identity $$\sum_{k=1}^n(-1)^kk^{2m}B_{2m+1}\left(\frac{n-k}2\right)=0,$$ where $B_j(x)$ denotes the Bernoulli polynomial of degree $j$.
Investigating danger indicators in the soil samples of the Nile Region in Babylon Governorate in Iraq
Authors: Ibrahem Salar Hussein
Published: November 2024

This study was conducted to detect the presence of radionuclides in the Nile region, which is one of the districts affiliated with the Mahaweel district in the Babil Governorate in Iraq and is located to the southeast of the center of the district, where many cancer cases appeared in this area, which necessitated researching whether there is a trace of radioactivity in the soil of this region was used, where the “NaI(Tl) gamma detector” was used, and the activity concentration levels of 238U, 232Th, and 40K were measured and compared with the internationally permissible values for twenty samples of the soil of this region. The radionuclides of the soil were as follows: 238U with an average of (11.72±1.62) Bq/kg, 232Th with an average of (21.04±3.7) Bq/kg and 40 K with an average of (133.55±1.82). Bq/kg. Absorbed dose rate, annual effect, radium equivalent activity, effective dose rate (EDR), and equivalent dose (AEDE) were measured. The radioactivity level index (I), external (Hex) and internal (Hin) risk indices, as well as increased lifetime cancer risk (ELCR) were determined. It was concluded that there is no danger that may threaten the population in this area, and thus the possibility of any health effects of radiation is low. The values obtained are considered among internationally accepted values, meaning that this area is free of harmful radioactivity.
Uji Kandungan Kafein dan Antioksidan Kopi Arabika (Coffea arabica) dengan Varian Waktu Fermentasi Menggunakan Bakteri Asam Laktat (Leuconostoc mesenteroides)
Authors: Ramadhan Deviyan , Rasyidah Rasyidah , Mayasari Ulfayani
Published: November 2024

Kopi Arabika memiliki ciri kandungan kafein yang berkisar antara 1% hingga 2,47% dengan profil rasa tajamnya yang khas dan mengandung antioksidan. Bakteri Asam Laktat (BAL) merupakan salah satu mikroorganisme probiotik, pemanfaatan dengan proses fermentasi digunakan untuk alternatif metode untuk mengatasi sebagian permasalahan kelebihan zat kafein pada kopi. Tujuan utama dari penelitian ini adalah untuk memastikan sejauh mana durasi fermentasi berdampak pada kadar kafein dan antioksidan dalam produk akhir. Cara yang digunakan adalah dengan menyiapkan inokulum BAL, memfermentasi kopi arabika selama 24 jam, 48 jam, 72 jam, memeriksa kandungan kafein dan memeriksa antioksidan. Nilai dari hasil uji kadar kafein dan antioksidan disajikan secara deskriptif kualitatif. Kandungan kafein biji kopi arabika yang difermentasi selama 48 jam adalah 17,7228 mg/g yang merupakan hasil terbaik. Nilai serapan antioksidan kopi arabika yang difermentasi selama 48 jam sebesar 113,9679 ppm merupakan hasil terbaik untuk antioksidan. PH optimal pada saat fermentasi BAL (Leuconostoc mesenteroides) adalah 4, yang berarti lama fermentasi adalah 48 jam. Dari seluruh waktu fermentasi yang paling efektif adalah 48 jam, karena biji kopi arabika tergolong antioksidan sedang dan memiliki kandungan kafein lebih rendah yaitu 17,7228 mg/g. Penelitian ini memiliki implikasi bagi perkembangan ilmu pengetahuan dalam fermentasi menggunakan bakteri asam laktat (Leuconostoc mesenteroides) untuk uji kandungan kafein dan antioksidan kopi arabika (Coffea arabica).
Penurunan Kadar Amonia pada Air Kolam Ikan Lele (Clarias gariepinus) dengan menggunakan Bakteri Rhodobacter dan Eko-Enzim
Authors: Lestari Yusfa Nanda , Rasyidah Rasyidah , Mayasari Ulfayani
Published: November 2024

Ikan lele merupakan salah satu dari ikan yang banyak di budidayakan di Indonesia karena proses pemeliharaannya relatif sederhana. Selama metabolisme protein organisme air, amonia biasanya diproduksi sebagai hasil ekskresi. Amonia (NH3) merupakan senyawa yang mengandung Nitrogen dan Hidrogen, kadar amonia bisa menyebabkan terjadinya pencemaran yang dapat menurunkan kualitas air sungai. Penelitian ini bertujuan untuk mengetahui penurunan kadar amonia (NH3) dengan penambahan bakteri Rhodobacter dan Ekoenzim pada air kolam ikan lele. Analisis data pada penelitian ini menggunakan data deskriptif kualitatif. Penelitian menggunakan metode analisis data secara deskriptif, kualitatif. Analisis data bersifat induktif yaitu salah satu analisis berdasarkan data yang akan diperoleh, selanjutnya dikembangkan menjadi hipotesis. Pada penelitian ini dijelaskan secara deskriptif. Kemudian diuji kemampuan bioremediasinya meliputi presentasi kehilangan ammonia dan kekeruhan air, dengan pengamatan 0, 2, 4, 6, 8 hari dan 3 kali pengulangan.  Penelitian kualitatif dilakukan dengan menguji kadar amonia menggunakan metode SNI 06-6989.30-2005. Hasil penelitian ini menunjukkan bahwa penambahan bakteri Rhodobacter pada air kolam ikan berpotensi menurunkan kadar amonia (NH3), dengan kadar amonia (NH3) awal 12,6 mg/l dengan adanya penambahan bakteri Rhodobacter terjadi penurunan amonia (NH3) sebesar 9,4 mg/l.
KATILIM BANKALARININ BAĞIMSIZ DENETİM RAPORLARININ İÇERİK ANALİZİ İLE İNCELENMESİ
Authors: Coşkun Selin
Published: November 2024

Bu çalışmada temel amaç Türkiye’de faaliyette bulunan katılım bankalarının bağımsız denetim raporlarının içerik analizi ile denetçi kuruluş nezdinde değerlendirilmesidir. Bu çerçevede Türkiye’de faaliyette bulunan katılım bankalarının bağımsız denetim raporları üzerine bir inceleme gerçekleştirilmiştir. Çalışmada kamu ve özel olmak üzere 6 katılım bankasına ait 2019-2023 yıllarına ait 30 adet bağımsız denetçi raporu içerik analizi yöntemi ile incelenmiştir. Bağımsız denetim raporlarında bağımsız denetçi görüşleri, kilit denetim konuları, kilit denetim konuları ele alınış şekilleri, denetim ücretleri, denetçi büyüklüğü gibi konu başlıkları incelenmiştir. Çalışma sonucunda bankalara yönelik olumlu denetçi görüşünün hâkim olduğu, sınırlı verilen denetçi görüş dayanaklarının temel sebebinin ise bankaların ayırmış olduğu karşılıkların ilgili mevzuat ve muhasebe standartları ilkelerine aykırı bir şekilde sunulmasından dolayı olduğu tespit edilmiştir. Bankalara denetim hizmeti veren denetim firmalarının tamamının 4 büyük olarak ifade edilen denetim firmalarından oluştuğu tespit edilmiştir. Denetçiler tarafından en çok belirlenen kilit denetim konusu ise “TFRS 9 Finansal Araçlar Standardı” kapsamında “finansal varlıklara ilişkin sınıflama, ölçüm ve değer düşüklüğünün finansal tablolara alınması ve açıklamalar” başlıklı konu olduğu görülmüştür. Bankaların en çok denetim ücretini raporlama dönemine ait denetim hizmetleri için ödedikleri belirlenmiştir. Çalışmada katılım bankalarına denetim hizmeti veren denetim firmalarının daha çok sorumlu denetçi olarak erkek denetçi atadıkları tespit edilmiştir.
Nghiên cứu ảnh hưởng của chất điều hòa sinh trưởng và hợp chất hữu cơ đến quá trình nhân giống in vitro cây Lan Giả hạc (Dendrobium anosmum Lindl.)
Authors: Luân Phan Văn Hoài , Hoa Mai Thị Phương , Vinh Đỗ Tiến
Published: November 2024

Nghiên cứu này nhằm xác định chất điều hòa sinh trưởng thích hợp cho quá trình nhân nhanh chồi và ra rễ của cây Lan Giả hạc in vitro. Kết quả nghiên cứu sau 45 ngày cho thấy các chất điều hòa sinh trưởng có ảnh hưởng rất lớn đến quá trình nhân nhanh chồi và ra rễ của cây Lan Giả hạc nuôi cấy in vitro. Trong đó, môi trường MS bổ sung BA 1 mg/L là thích hợp nhất cho quá trình nhân nhanh chồi với số chồi đạt được là 5,8 chồi. Môi trường bổ sung nước dừa 20 % là thích hợp nhất cho sự sinh trưởng của cây với các chỉ tiêu số chồi, số lá và chiều cao chồi đạt được tương ứng là 2,4 chồi, 3,11 lá và 3,44 cm. Cây ra rễ tốt nhất trên môi trường MS bổ sung IBA 0,5 mg/L với số rễ trung bình đạt được là 3,18 rễ. Kết quả đạt được của nghiên cứu góp phần vào việc xây dựng được quy trình vi nhân giống cây Lan Giả hạc in vitro nhằm đáp ứng nhu cầu của thị trường về cây giống hoa Lan.
MECHANISM FOR THE HYDROBROMINATION REACTION OF BUTA-1,3-DIENE ACCORDING TO QUANTUM-CHEMICAL CALCULATIONS
Authors:   Kazan National Research Technological University, ZUEVA E.M. , PETROVA M.M. , KHAMITOVA A.I. ,   Kazan National Research Technological University
Published: November 2024

The mechanism for the hydrobromination reaction of buta-1,3-diene was studied using quantum-chemical methods. According to calculations, in the first step, the initial reagents (solvated molecules of hydrogen bromide and buta-1,3-diene) form a pre-reaction complex (p-complex). The reaction can then proceed via two competing paths. Path 1, leading to the thermodynamically less stable 1,2-product, is characterized by a lower activation barrier. Path 2 leads to the thermodynamically more stable 1,4-product and is characterized by a higher activation barrier. The optimized structures of transition states indicate a one-step transformation of the p-complex into the 1,2- and 1,4-adducts. In both cases, the positively polarized hydrogen atom of the hydrogen bromide molecule attacks the first carbon atom of the buta-1,3-diene molecule. As a result, heterolytic cleavage of the H-Br bond, heterolytic cleavage of the p-bond between carbon atoms and the formation of a C-H bond occur, and the resulting bromide anion attaches to the second (path 1) or fourth (path 2) carbon atom, i.e. to carbon atoms, on which a positive charge accumulates. Both paths are reversible (ΔH0 < 0, ΔS0 < 0). The resulting 1,2-adduct slowly rearranges into the 1,4-adduct, and this process is irreversible (ΔH0 < 0, ΔS0 > 0). Our results indicate that the 1,2-addition product predominates in the reaction mixture under nonequilibrium conditions, since it is formed faster. After equilibrium is established, the ratio of products will change in favor of the thermodynamically more stable 1,4-adduct. This conclusion is in good agreement with the ratio of products observed when the reaction is carried out in various (kinetically and thermodynamically controlled) modes.
PRODUCTION OF A PILOT BATCH OF CRUDE AND PURIFIED COAGULANT FROM KAOLIN CLAYS OF CHASHMA-SANG DEPOSIT BY SULFATIZATION
Authors:   State Institution «Scientific Research Institute of Metallurgy» JSC «Tajik Aluminium Company», NAIMOV N.A. , MIRSAIDOV U. ,   Сhemical, biological, radiological, and nuclear safety and security agency of National Academy of Sciences of Tajikistan, RUZIEV J.R. ,   Tajik National University, MURODIYON A. , MIRPOCHAYEV KH.A. ,   State Institution «Scientific Research Institute of Metallurgy» JSC «Tajik Aluminium Company»
Published: November 2024

The article presents the results of pilot studies on the technology of obtaining an experimental batch of crude and purified coagulant from kaolin clays of "Chashma-Sang" deposit by sulfatization method and testing of purified kaolin coagulant in laboratory conditions. Semi-industrial experience on sulfatization of 100 kg of kaolin clay crushed to particle size <0,1 mm was carried out in a small dryer of the building №12 of electrolysis production of "TALCo" JSC with application of 80 kg of concentrated sulfuric acid according to stoichiometric calculations at temperature 260-300 °C and duration of 90 min. As a result, 170 kg of sulfated spokeshave was obtained with aluminum sulfate yield of more than 85%. X-ray phase analysis confirmed the presence of the mineral millosevichite (Al2(SO4)3) and quartz (SiO2) in the composition of sulfated sinter. The process of aqueous treatment of 50 kg of sulfatized spock was carried out at a temperature of 80-85°C for a duration of 30 min, followed by filtration of the liquid part from the solid part. During the crystallization of the filtrate (sulfate-containing solution), more than 30 kg of crystalline aluminum sulfate was naturally obtained, and the amount of insoluble precipitate was 22 kg. According to X-ray phase analysis, the crystalline aluminum sulfate is composed of the mineral alunogen (Al2(SO4)3-16H2O), which is a purified coagulant, and the solid precipitate contains mainly the mineral quartz (SiO2). Based on the results of tests of the produced purified kaolin coagulant in the laboratory of the Center for Control of Drinking Water Production of the State Unitary Enterprise "Dushanbevodokanal" it is shown that the obtained product meets the requirements of GOST 12966-75 for purified aluminum sulfate in terms of basic physical and chemical parameters.
Analisis Persepsi Penggunaan Terhadap Aplikasi Lichess Dengan Model Utaut 3
Authors: Nainggolan Tiodoras Nainggolan Tiodoras , Sudarto Sudarto , Ginting Tri Wulandari
Published: November 2024

Salah satu contoh perkembangan teknologi dalam dunia game, seperti aplikasi catur online Lichess. Aplikasi Lichess penting dalam pertandingan catur onsite yang beralih menjadi turnamen catur online terutama pada masa pademi covid-19, sehingga olahraga catur tetap aktif. Penelitian ini menggunakan model UTAUT-3 yang merupakan pengembangan dari model UTAUT-2 dengan adanya satu variabel baru yaitu Personal innovativeness dan dihilangkannya variabel moderasi. Dalam UTAUT-3 penelitian ini menggunakan variabel intervening sebagai variabel mediasi untuk mengukur keberhasilan penggunaan aplikasi Lichess. Behavioral Intention sebagai variabel intervening berfungsi untuk menjelaskan bagaimana memediasi hubungan antara variabel independen dan dependen. Penelitian ini menggunakan jenis penelitian kuantitatif dengan tools analisis Partial Least Square - Structural Equation Model (PLS-SEM) dan aplikasi pengolahan data smartpls. Responden dalam penelitian ini adalah atlet catur sumut sebanyak 167 responden. Hasil penelitian ini menemukan bahwa adanya pengaruh positif dan signifikan antar hubungan secara langsung dan tidak langsung sebagai variabel (intervening) dalam menganalisis penerimaan penggunaan aplikasi lichess terhadap atlet catur Provinsi Sumatera Utara.
Molecular Insights into The Mechanisms of Rabies Virus Neuroinvasion And Pathogenicity: A Review Article
Authors:   Biomedical Department, Alkawarizmi Collage of Engineering, Baghdad University Iraq, Ibraheem Muntaha R.
Published: November 2024

Rabies is a major global health problem that kills approximately 59,000 people each year, mostly in developing regions. The rabies virus (Rabies lyssavirus) is a unique neurotropic virus that can invade the nervous system, escape host immune responses and produce a truly devastating nervous system disease. The molecular insights into rabies virus neuroinvasion and pathogenicity, reviewed in this paper, are described in a comprehensive overview. Structural and genomic characteristics of the virus, neuroinvasion mechanisms, and pathologic effects on the host are discussed. Additionally, we discuss the viral strategies they use to evade the host’s immune responses. We then review the challenges to current therapeutic approaches, including post exposure prophylaxis and vaccination. We conclude with suggestions of future research directed towards development of better prevention, diagnosis and treatment strategies for rabies.
Genetic Detection of iss, traT, and ompK36 Genes in Gram-Negative Bacteria Isolated from Different Infections in Najaf Province
Authors:   Al-Qassim Green University-Collage of Biotechnology-Department of Medical Biotechnology, Turki Thualfiqar Ghalib
Published: November 2024

Background: The increase serum survival (iss) gene is associated with the synthesis of the O-antigen capsule, the transfer protein (traT) gene is linked to the synthesis of the K1 capsule, while the outer membrane ptroteint-36 (ompK36) gene is connected to antibiotic resistance. Objectives: The current study aimed to detection presence of iss gene, Trat gene, Ompk36 gene in different gram negative isolated. Materials and Methods: A total of 78 Gram-negative bacterial isolates were obtained from intestinal and extra-intestinal infections. All isolates were cultured on MacConkey agar and identified using the Vitek-2 system. Conventional PCR was employed for the amplification of the iss, traT, and ompK36 genes. Microsoft Excel was used for the statistical analysis of the data. Results: The iss, traT, and ompK36 genes were detected in the total DNA of 78 isolates from the Enterobacteriaceae family, which included 15 isolates each of E. coli, Klebsiella pneumoniae, Salmonella typhi, and Shigella dysenteriae, 12 isolates of Proteus vulgaris, and 6 isolates of Serratia marcescens. The iss gene was present in 51 out of 78 isolates (65%) at 258 bp, the traT gene was detected in 63 out of 78 isolates (80.7%) at 258 bp, and 45 out of 78 isolates (57.6%) tested positive for the ompK36 gene at 305 bp. Conclusion: The iss, traT, and ompK36 genes were detected among Enterobacteriaceae species isolated from various clinical infections, with a notably high occurrence in extraintestinal isolates.
Advanced neural network and hybrid models for wind power forecasting: a comprehensive global review
Authors: Sambane Malixole , Mendu Bongumsa , Monchusi Bessie Baakanyang
Published: November 2024

Neural Network Algorithms (NNAs), modeled after the workings of biological neurons, are increasingly utilized in areas like data mining and robotics to address complex challenges in artificial intelligence (AI). This research will undertake a systematic review based on advanced neural networks and hybrid models for wind power forecasting. Using the Scopus database, a methodical search, acquisition, and filtering procedure was utilized to find pertinent publication documents; VOSviewer software was utilized to analyze trends. The emphasis on improving prediction accuracy and stability in wind power forecasting through the application of cutting-edge machine learning techniques and hybrid models is a prominent feature that unites the literature. Furthermore, attention is being paid to resolving issues pertaining to the production of wind energy, such as wind power fluctuation management, grid integration problems, wind speed prediction, and turbine health monitoring. A rising trend involves multi-dimensional, multi-step forecasting and incorporating factors like weather data and spatial-temporal features to enhance reliability. This paper contributes by exploring the integration of optimization techniques with neural networks, investigating hybrid models to improve wind power predictions, assessing LSTM-based approaches in forecasting, and suggesting directions for future research.
Evaluation of cumulative radiation exposure among dental workers at Usmanu Danfodiyo University Teaching Hospital, Sokoto, Nigeria
Authors: Ibrahim Ahmadu
Published: November 2024

Continuous surveillance for radiation protection is imperative when employing ionizing radiation-emitting devices, such as those used at Usmanu Danfodiyo University Teaching Hospital (UDUTH) in Sokoto, Nigeria. In adherence to national regulations, it is mandatory for all personnel involved in activities with ionizing radiation to participate in a regular individual dosimetric monitoring program. This study evaluates the occupational radiation exposure of dental healthcare practitioners over the course of 2017, with assessments conducted on a quarterly basis. For this purpose, the HARSHAW 4500 Reader, in conjunction with Thermoluminescent Dosimeters (TLDs), was employed for individual radiation monitoring. This method ensures precise and reliable measurements of both skin and deep tissue doses, providing comprehensive data on the cumulative annual effective dose for each worker. The findings from this investigation reveal significant variations in the cumulative radiation doses among the dental staff. The practitioner identified as DN24b recorded the highest cumulative dose at 15.60 man Sieverts (manSv), highlighting a notable exposure level within the group. Conversely, the practitioner labeled DN13 registered the lowest annual effective dose at 5.33 manSv, indicating effective adherence to radiation safety protocols. These results underscore the importance of rigorous and continuous radiation monitoring to ensure occupational safety. While the observed doses are within acceptable limits, the variation in exposure levels suggests the need for ongoing education and adherence to radiation protection principles. The study advocates for enhanced protective measures and continuous training to minimize radiation exposure and ensure the well-being of all dental healthcare workers at UDUTH.
Techno-economic analysis of a green hydrogen-firing gas turbine in Malaysia via Monte Carlo simulations
Authors: Rahman Mohammad Nurizat
Published: November 2024

Based on Malaysia's National Energy Transition Roadmap, hydrogen is important to the country's energy transition. However, studies on potential green hydrogen applications in Peninsular Malaysia are scarce, particularly in gas turbine (GT) co-firing. This gap has shaped discussions around the economic and technological aspects of green hydrogen production and co-firing. Therefore, this paper focuses on the feasibility of green hydrogen co-firing in one of Malaysia's GTs, with a special emphasis on Peninsular Malaysia, the country's primary industrial hub, which houses most of the key GTs. The study uses a Monte Carlo model to evaluate the economic and technical factors affecting green hydrogen adoption, concentrating on three target years: 2023, 2030, and 2050, representing different stages of technological deployment and market adoption of electrolyzers. Actual GT data is used to calculate future green hydrogen demand based on the turbines' technology and the percentage of hydrogen co-firing they could accommodate. Scenario I for 2023 showed the widest Levelized Cost of Hydrogen (LCOH) distribution, ranging from $3.54 to $16.82 per kg, indicating a high level of uncertainty. By 2030, the outlook improves significantly, with the conceptual co-firing system potentially obtaining an LCOH of $2.68 to $9.43 per kg. Looking ahead to 2050, the study predicts a promising future for green hydrogen co-firing, with the LCOH potentially dropping to $2.30 to $8.54 per kg, and a mode of $4.64 per kg. Sensitivity analysis also reveals shifting key cost drivers. In 2023, early-stage investments in electrolyzers are critical, while electricity prices become increasingly important in 2030 and 2050. Overall, three key cost drivers have been identified as having a significant effect on LCOH: electrolyzer power consumption, electricity price, and utilization rate, highlighting the need for industry and policymakers to concentrate on these factors when formulating new policy instruments for the green hydrogen co-firing initiative in Peninsular Malaysia's GTs.
Advancing combustion technologies and alternative fuels in hybrid electric vehicles: a pathway to high-efficiency, low-emission propulsion systems
Authors: Moradi Jamshid , Banagar Isa , Mehranfar Sadegh , Mahmoudzadeh Andwari Amin , Könnö Juho , Gharehghani Ayat
Published: November 2024

In the pursuit of reducing carbon emissions and enhancing fuel efficiency, the integration of advanced combustion technologies and alternative fuels in internal combustion engines (ICEs) remains pivotal, especially when paired with electrified powertrains. This study offers a comprehensive analysis of cutting-edge combustion strategies—Gasoline Direct Injection (GDI), Gasoline Compression Ignition (GCI), and Low-Temperature Combustion (LTC)—and their transformative potential in hybrid electric vehicles (HEVs). Through a detailed examination of these technologies, we assess the thermodynamic optimizations achieved via variable valve timing, variable compression ratio, and cylinder deactivation systems. Additionally, the study investigates the viability of alternative fuels, including compressed natural gas (CNG), liquid petroleum gas (LPG), biodiesel, and hydrogen, as cleaner and more efficient energy carriers. The synthesis of these technologies with HEV platforms not only addresses emission regulations but also pushes the boundaries of thermal efficiency. We provide a critical evaluation of the hybridization benefits, focusing on fuel consumption reductions, particulate matter (PM) mitigation, and overall system efficiency improvements. By coupling multi-mode combustion with electrification, this work underscores a promising trajectory toward achieving near-zero emissions in both light and heavy-duty vehicle sectors. Furthermore, this study offers insights into future propulsion architectures, advocating for a synergistic approach between advanced ICE technologies and electric powertrains to meet stringent global climate targets.
Sifat Organoleptik Tepung Kulit Pisang Kepok (Musa Paradisiaca L) pada Pembuatan Cupcake
Authors: Isiming Mulyansyah , Nurwidah Andi , Rukmelia Rukmelia
Published: November 2024

Cupcake adalah jenis makanan yang ideal untuk berbagai acara, karena ukurannya yang kecil menjadikannya sebagai cemilan yang nyaman. Dengan menggunakan tepung kulit pisang yang kaya serat, cupcake dapat ditingkatkan nilai gizinya untuk menjadi lebih sehat. Tujuan dari penelitian ini adalah untuk menentukan kualitas cupcake dengan subtitusi tepung kulit pisang kepok terbaik berdasarkan uji organoleptik. Penelitian ini dilakukan dengan 4 perlakuan 3 pengulangan. Perlakuan yang dimaksud adalah substitusi tepung terigu : tepung kulit pisang yaitu A0 (kontrol) (100%:0%), A1 (95%:5%), A2 (90%:10%), A3 (85%:15%). Parameter yang diamati adalah uji organoleptik yang meliputi (warna, aroma, rasa dan tekstur). Tingkat kesukaan panelis terbaik terhadap warna terdapat pada substitusi 15% (A3). Sedangkan Tingkat kesukaan panelis terbaik terhadap aroma dan rasa menunjukan bahwa cupcake substitusi tepung kulit pisang kepok terbaik adalah pada substitusi 10% (A2). Sedangkan tingkat kesukaan terbaik terhadap tektur yaitu 0% (A0).
Analisis Sifat Fisiko Kimia Nasi dari Beras Nutrizink dan Ciherang Gorontalo
Authors: Akilie Muhammad Sudirman , Fitriani A Nur , Abudi Ikran
Published: November 2024

The aim of this research was to analize the physics-chemical such as water, zinc, whiteness index level and the organoleptic consist of the taste, colour, oudor, texture of nutrizink and ciherang rice from Gorontalo. The design of this research used factorial completely randomized design with two factors, which the first and the second factors were variety of rice and ratio water rice. The four treatments were nutrizink rice 200gram: water 200 ml, nutrizink rice 200gram: water 400 ml, ciherang rice 200gram: water 200 ml, ciherang rice 200gram: water 400 ml with three replications. The results showed that the factors of various rice and ratio water rice did not affect significantly on water level but it affected significantly to zinc level. The factor of ratio rice and water had whiteness index level significantly. There were no interaction factors between various of rice and ratio water rice on water, zinc and whiteness index level of nutrizink and ciherang rice from Gorontalo. The treatment of nutrizink rice, ratio of water and rice 1:2 = rice 200gram water 400 ml was the best base on the panelists acceptance of the taste, colour, oudor and texture of nutrizink and ciherang rice.
Uji Orgoleptik Mutu Terasi Ikan Sagela dengan Menggunakan Metode Fermentasi
Authors: INAYAH ASTRINA NUR , Laboko Asriani , Mahieu Olyvia Carnevia
Published: November 2024

Indonesia merupakan Negara kepulauan yang memiliki banyak kekayaan alam salah satunya dengan beraneka ragam jenis ikan. Di Sulawesi Utara ikan sagela mempunyai nama lokal yaitu Ikan Roa (Herihamphus sp). Upaya untuk menghambat pembusukan dilakukan proses pengawetan dan pengolahan. Kegiatan pengolahan ikan sagela dalam pembuatan terasi yang paling umum adalah melakukan pengolahan minimal dengan cara pengeringan, pengasinan dan fermentasi. Tujuan penelitian ini untuk mengetahui perlakuan yang terbaik terhadap pembuatan terasi ikan sagela. Metode yang digunakan menggunakan tiga perlakuan yaitu T1 = ikan sagela 25 g, T2 =ikan sagela 50 g, T3 = ikan sagela 75 g, menggunakan uji organoleptik yaitu metode hedonik atau uji kesukaan panelis membutuhkan sebanyak 25 orang meliputi tekstur, warna, aroma, rasa. Hasil uji prganoleptik menunjukkan bahwa rasa tingkat kesukaan panelis rata-rata menyukai T2 dengan nilai (3.56), pada aroma (3.48), tekstur (3.72), rata-rata menyukai T2 (3.68).
EVALUASI DAN TINGKAT PARTISIPASI MASYARAKAT DALAM PENGELOLAAN HUTAN MANGROVE DI PULAU KARAMPUANG KABUPATEN MAMUJU
Authors: Ardi Muhammad Ardiansyah , Asri Haryanto , D Damis
Published: November 2024

Evaluasi dan tingkat partisipasi masyarakat dalam pengelolaan hutan mangrove di Pulau Karampuang Kabupaten Mamuju. Penelitian ini bertujuan untuk mengevaluasi tingkat partisipasi masyarakat dalam pengelolaan ekosistem mangrove di Pulau Karampuang kabupaten Mamukju. Kegunaan penelitian diharapkan dapat memberikan informasi kepada masyarakat dan pihak – pihak terkait lainnya sebagai bahan pertimbangan dalam mengambil kebijakan pengelolaan ekosistem mangrove. Metode yang digunakan dalam penelitian ini yaitu menggunakan kuesioner. Data mengenai faktor internal yaitu karakteristikin dividu peserta dalam pengelolaan mangrove di kawasan wisata mangrove yang dilakukan dengan mengisi kuesioner dan wawancara. Hasil Partisipasi masyarakat terhadap kriteria 76,66 % memiliki tingkat partisipasi yang tinggi dengan menunjukkan bahwa nilai rata- rata skala linkert menunjukkan rentang positif. Sementara 23,33 % kriteria menunjukkan tingkat partisipasi yang rendah dengan nilai rentang negative, dengan kata lain sebagian masyarakat menganggap bahwa mangrove tidak memiliki manfaat bagi masyarakat Pulau Karampuang
STRATEGI PENGELOLAAN WISATA BAHARI BERKELANJUTAN PANTAI DRINI, GUNUNG KIDUL, YOGYAKARTA
Authors: Mazaya Amalia Febryane Adhani , Masjhoer Jussac Maulana , Ananda Dea
Published: November 2024

Pantai Drini merupakan salah satu pantai potensial yang terletak di Kabupaten Gunung Kidul, Yogyakarta. Pengelolaan di Pantai Drini sebagai destinasi wisata bahari komersil selama ini dilakukan secara Community Based Marine Tourism (CBMT) atau pengelolaan potensi wisata bahari yang dilakukan oleh masyarakat lokal. Terdapat kelebihan dan kelemahan pada pengelolaan berbasis masyarakat. Secara ekonomi memang pendapatan seutuhnya masuk ke masyarakat, namun terdapat masalah apabila pendapatan dari kegiatan wisata tidak merata, bahkan tidak memperhatikan kepuasan wisatawan dan kelestarian lingkungan. Tujuan dari penelitian ini adalah untuk merumuskan strategi pengelolaan Pantai Drini dengan menganalisis potensi dan ancaman yang ada di kawasan Pantai Drini, berikut kekuatan dan kelemahan pengelolaan yang telah dilakukan saat ini. Penelitian dilakukan di Pantai Drini pada bulan April 2023. Metode penelitian yang digunakan deskriptif analisis dan dokumentasi serta interview/wawancara dan pengambilan sampel dilakukan secara purposive sampling kepada pengelola Pantai Drini. Analisis data yang digunakan adalah analisis SWOT (Strength, Weakness, Opportunity, dan Treathness). Hasil penelitian menunjukkan perhitungan bobot dan skor Matriks IFAS dan EFAS yang merujuk pada Kuadran I. Strategi pengelolaan Pantai Drini yang dirumuskan dengan analisis faktor internal dan eksternal meliputi promosi menggunakan media sosial secara masif dan terstruktur, meningkatkan fasilitas tambahan berbasis alam untuk menarik pengunjung, menyisihkan tiket masuk untuk konservasi dan pelestarian pantai, pelibatan peran pemerintah dalam mengelola dan mengatur kegiatan wisata di Pantai Drini. Implementasi strategi pengelolaan yang tawarkan harapannya dapat mengembangkan pengelolaan Pantai Drini secara berkelanjutan.
Evaluation of Dairy Cow Milk Production Based on Temperature Humidity Index (THI)
Authors: Adhyatma Muhammad , Ahmad Yanuar , Kusuma Satria Budi , Permadi Herlina Irawati , Fajrin Eistifani
Published: November 2024

This study aims to assess the impact of environmental temperature on the milk production of PFH dairy cows. The research site is located at an altitude of 187 meters above sea level, indicating relatively high levels of temperature and humidity. The average temperatures range between 23-30°C and the humidity levels range between 63-86%. Both elevated temperature and humidity can have an influence on milk production. The findings of this study indicate that the barn's Temperature-Humidity Index (THI) falls within the mild stress category. The milk production results for PFH dairy cows ranged from 3-6 liters per head per day in the morning, and 1.5-3 liters per head per day in the afternoon. However, it should be noted that this production level is still below the genetic standards. Other factors such as feed, management practices, and animal health also play a role in milk production. Regression analysis suggests a correlation between environmental temperature (THI) and milk production, although this correlation is not statistically significant. This lack of statistical significance may be attributed to the influence of various other factors on milk production, such as feed type and management practices. Therefore, in order to enhance the milk production of PFH dairy cows, it is necessary to develop a more comprehensive understanding of these contributing factors.
A efektifitas fermentasi kiambang terhadap kualitas karkas puyuh
Authors: Mirna Mirnawati , Ratna Ratna , Risal Muhammad
Published: November 2024

Tingginya dan kelangkaan pakan konvensional menjadi kendala utama yang dihadapi peternak. Pemanfaatan kiambang sebagai bahan pakan terkendala pada tingginya serat kasar sehingga menurunkan tingkat kecernaan pakan. Tujuan penelitian ini adalah untuk mengetahui bagaimana pengaru emberian fermentasi kiambang (salvinia molesta) kedalah ransum pakan puyuh yang dipelihara selama satu bulan. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan perlakuan yaitu P0(Ransum Kontrol; P1(Ransum Fermentasi dengan 4% kiambang); P2(Ransum Fermentasi dengan 8% kiambang); P3(Ransum Fermentasi dengan 12% kiambang) dan setiap ulangan terdiri dari 5 ekor burung puyuh. Parameter yang diukur adalah bobot potong, bobot karkas, dan persentase karkas. Data yang diperoleh dari analilis sidik ragam (ANOVA) didapatkan hasil yang menyatakan bahwa pemeberian fermentasi kiamabang (salvinia molesta) dalam ransum memberikan pengaruh nyata (P<0,05) terhadap kualitas karkas puyuh.
PENGARUH PERBEDAAN METODE PENGEMASAN (PACKAGING) NUGGET AYAM DAUN KELOR TERHADAP KUALITAS KIMIA DAN MIKROBIOLOGI
Authors: Windyasmara Ludfia , Sukaryani Sri , Sariri Ahimsa Kandi
Published: November 2024

Penelitian ini bertujuan untuk mengetahui kualitas kimia dan mikrobiologi nugget ayam yang disubstitusi tepung daun kelor pada metode pengemasan yang berbeda. Penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan 3 perlakuan 4 kali ulangan, 2 kali analisis (duplo). Perlakuan pada penelitian ini adalah nugget yang disimpan dengan kemasan Streoform dan Plastik Wrapping, Polypropylena (PP) non vakum, dan Polypropylena (PP) vakum. Variabel yang diamati dalam penelitian antara lain kadar air, keempukan, dan Total Plate Count (TPC). Data pada hasil penelitian dianalisis dengan menggunakan Analysis of Variance (ANOVA) dan dilakukan uji lanjut Duncan’s Multiple Range Test (DMRT) dengan taraf nyata 5% dan 1%. Hasil penelitian menunjukkan metode pengemasan yang berbeda pada nugget ayam daun kelor berbeda nyata (P<0,05) terhadap kadar air dan Total Plate Count (TPC). Perbedaan sangat nyata (P<0,01) terjadi pada keempukan pada nugget ayam dengan metode pengemasan yang berbeda. Hasil penelitian ini dapat disimpulkan bahwa metode pengemasan yang berbeda pada nugget ayam daun kelor dengan Streoform dan Plastik Wrapping, Polypropylena (PP) non vakum, dan Polypropylena (PP) vakum mempengaruhi kadar air, keempukan, serta Total Plate Count (TPC).
Kata kunci: Kualitas kimia, Kualitas mikrobiologi, Nugget ayam, Tepung daun kelor
PROFIL DAN ESTIMASI RIPITABILITAS PERTAMBAHAN BOBOT BADAN DOMBA TEXEL SEBAGAI DASAR CULLING
Authors: Mudawamah Mudawamah
Published: November 2024

Domba Texel merupakan ternak yang penting dalam industri daging dan wol, telah mendapat pengakuan luas dan menjadi pilihan peternak di berbagai negara termasuk Indonesia. Domba Texel ditandai oleh karakteristik fisik yang memudahkan dalam pengukuran dan analisis pertumbuhan serta produksinya. Penelitian ini bertujuan untuk menggambarkan profil pertambahan bobot badan domba Texel dan mengestimasi nilai ripitabilitasnya berdasarkan pertambahan bobot badan, serta menentukan jumlah pencatatan yang diperlukan sebelum melakukan pemilihan induk untuk dieliminasi (culling) berdasarkan pertambahan bobot badan domba Texel.
Studi ini menggunakan 9 ekor induk domba Texel berusia 1-2 tahun sebagai sampel. Metode deskriptif kuantitatif digunakan untuk memahami profil dan ripitabilitas pertambahan bobot badan mingguan induk domba Texel. Deskripsi profil mencakup rerata, variasi fenotipe, rentang, simpangan quartil, dan simpangan rata-rata. Estimasi ripitabilitas dievaluasi melalui korelasi sederhana dan analisis varians. Variabel yang diamati adalah pertambahan bobot badan selama 4 minggu. Hasil penelitian menunjukkan nilai ripitabilitas pertambahan bobot badan domba sebesar 0,230. Profil pertambahan bobot badan induk domba Texel menunjukkan rerata 611,11 gr; variasi fenotipe 35.641,03 gr; rentang 900 gr; simpangan quartil 100,00 gr; dan simpangan rata-rata 147,33 gr. Diperlukan pengamatan paling sedikit dua recording pertambahan bobot badan sebelum pemilihan induk untuk dieliminasi.
Perfomance Ayam Broiler Dengan Manajemen Perkandangan Sistem closed house dan open house
Authors: Sm Ilpan
Published: November 2024

The aim of this research is to determine the efficiency of using the closed house cage and open house cage management systems owned by PT partners. Poultry Technology Integration. This study used an observational approach by comparing feed consumption, body weight gain, feed conversion ratio, final body weight, and mortality of broiler chickens reared in two different cages that were harvested in 1 rearing period. Data on feed consumption, body weight gain, feed conversion ratio and mortality were analyzed statistically using the t test, while data on final body weight were analyzed descriptively. Based on research findings, the average feed consumption in the closed house cage system is 3562.20 g/head and the feed consumption in the open house cage system is 3233.72 g/head. In the close house cage system, the average feed conversion ratio is 1.672 while in the open house cage system it is 1.517. Close house and open house cage systems had no significant difference (P > 0.05) on feed consumption. body weight gain, feed conversion ratio and mortality. The close house cage system produced a final body weight of 2,437 g/head while in the open house cage it was 1,991 g/head and the total mortality percentage of the close house cage system was 7.08% of the initial population of 5000 birds, while the open house cage system reached 10.32% of the 5000 initial population.
KANDUNGAN TOTAL BAKTERI, Escherichia coli, DAN Salmonella sp. PADA BIOKONVERSI MANURE LAYER UNTUK BAHAN BAKU KONSENTRAT KAMBING
Authors: Fadillah Farah , Sujatmiko Sujatmiko , Yulis Ramai
Published: November 2024

Manure layer memiliki kandungan protein kasar tinggi yang bermanfaat bagi mikroba rumen, tetapi penggunaannya dibatasi oleh risiko kontaminasi patogen seperti Escherichia coli dan Salmonella sp. Penelitian ini bertujuan untuk mengetahui total bakteri, keberadaan bakteri Salmonella sp. dan Escherichia coli, serta keberadaan telur cacing pada biokonversi manure layer sebagai bahan baku konsentrat pakan kambing. Penelitian menggunakan Rancangan Acak Lengkap yang terdiri dari 4 perlakuan dan 4 ulangan: A) manure layer + T. viride (3 ml) + S. cerevisiae (3 ml); B) manure layer + A. niger (3 ml) + S. cerevisiae (3 ml); C) manure layer + T. viride (2 ml) + A. niger (2 ml) + S. cerevisiae (2 ml); dan D) manure layer + A. niger (2 ml) + T. viride (2 ml) + S. cerevisiae (2 ml). Parameter yang diamati meliputi kandungan bahan organik, Total Plate Count (TPC), uji kualitatif Salmonella sp, uji kualitatif Escherichia coli, dan keberadaan serta total telur cacing. Inokulasi kapang Aspergillus niger dan Saccharomyces cerevisiae, menghasilkan biokonversi manure layer dengan total plate count tertinggi dibandingkan dengan perlakuan lainnya. Pada perlakuan ini, tidak ditemukan bakteri Salmonella sp., namun masih ditemukan bakteri E. coli dalam jumlah yang relatif kecil. Telur cacing tidak ditemukan pada biokonversi manure layer pada semua perlakuan.
IbM IbM Metode Seleksi untuk Analisis Karakter Pertumbuhan dan Fekunditas Ikan Nila di POLOBETE Fish Farm Sulawesi Selatan
Authors: Irmawati Irmawati , Tresnati Joeharnani , Aslamyah Siti , Larekeng Siti Halimah , Khairana Kadriah Ince Ayu
Published: November 2024

Abstract. POLOBETE Fish Farm is a private hatchery that uses biofloc technology located in Pinrang Regency, South Sulawesi. It has 18 tilapia biofloc ponds and one nursery pond. The problem faced by POLOBETE Fish Farm is that it has not been able to meet market demand for seeds both in quality and quantity. Genetic improvement with selection methods for growth characteristics and fecundity is a solution to increase the quantity and quality of tilapia seed production at POLOBETE Fish Farm. The Fisheries Research Team from the Research and Development Centre for Biotechnology, Institute of Research and Community Service, Universitas Hasanuddin, assisted POLOBETE Fish Farm with truss morphometric methods to assess fish body shape and its association with growth traits and fecundity analysis methods to assess the number of eggs or the number of larvae produced by female tilapia broodstock. Data on the morphological and fecundity characters of selected fish can be used to assess the progress of selection. The result of the community service is that POLOBETE Fish Farm has applied both methods to assess generations/progeny resulting from crosses between Nile tilapia Oreochromis niloticus Kekar (♂) and O. niloticus Kekar (♀) and hybridization between O. niloticus Kekar (♂) and O. niloticus Sultana (♀). Furthermore, both truss morphometric and fecundity methods can be used by POLOBETE Fish Farm on production program of XY neofemale, YY supermale, and YY female.  
Abstrak. POLOBETE Fish Farm adalah usaha akuakultur yang menerapkan sistem bioflok yang berlokasi di Kabupaten Pinrang Sulawesi Selatan, memiliki 18 kolam terpal bioflok ikan nila dan satu buah kolam pendederan. Permasalahan yang dihadapi oleh POLOBETE Fish Farm adalah belum mampu memenuhi kebutuhan pasar akan benih baik secara kualitas maupun kuantitas. Genetic improvement dengan metode seleksi untuk karakter pertumbuhan dan fekunditas adalah solusi untuk meningkatkan kuantitas dan kualitas produksi benih. Tim Riset Perikanan dari Lembaga Penelitian dan Pengembangan Bioteknologi LPPM Universitas Hasanuddin, memberi pendampingan kepada  POLOBETE Fish Farm tentang metode truss morfometrik untuk menilai morfologi ikan dan metode analisis fekunditas untuk menilai jumlah telur atau jumlah larva (fekunditas) yang diproduksi oleh induk ikan nila betina. Data karakter morfologi dan fekunditas ikan-ikan hasil seleksi tersebut dapat digunakan sebagai parameter untuk menilai kemajuan seleksi. Hasil dari pengabdian adalah POLOBETE Fish Farm telah mengaplikasikan kedua metode tersebut untuk menilai progeny hasil persilangan antara Oreochromis niloticus Kekar (♂) dan O. niloticus Kekar (♀) serta hibridisasi antara O. niloticus Kekar (♂) dan O. niloticus Sultana (♀). Metode truss morfometrik dan fekunditas selanjutnya dapat digunakan oleh POLOBETE Fish Farm pada program produksi XY neofemale, YY supermale, dan YY female.
Pendampingan Lokakarya 1 Calon Guru Penggerak (CGP) Angkatan 9 Kabupaten Enrekang dalam Pemetaan Komunitas Praktisi
Authors: Aya Ismaya Maya , Amiruddin Eka Wahyuni , Ridwan Madinatul Munawwarah , Chabir Galib Andi Ahmad , Suherman Suherman
Published: November 2024

Community service activities with the theme of mentoring activities for prospective mobilizing teacher workshops. The purpose of this activity is to provide assistance to Prospective Mover Teachers Batch 9 of Enrekang Regency in carrying out Workshop 1 activities. The implementation of activities using face-to-face (offline) methods for 1 day (8 JP) is located at SMP Negeri 1 Enrekang. The activity was attended by 18 Prospective Driving Teachers of Enrekang Regency. The result of this activity is that the Prospective Teacher Mobilizer understands that the community of practice is a forum to develop the competence of learning leaders in driving the education ecosystem.
KAMPUNG BAJO PRENEUR: EMPOWERMENT ANAK MUDA SUKU BAJO MELALUI EDUKASI ENTREPRENEUR
Authors: Wahyuni Syahri , Masitah Masitah , Wi De , Daena Suwardi
Published: November 2024

Developing a person's character and entrepreneurship is very important, because interest always stimulates concentration of thought, creates joy in entrepreneurship and increases a person's entrepreneurial abilities. The aim of this activity is to promote entrepreneurial characteristics and culture and improve the skills of Bajo youth in the exploitation of the natural resources of their environment to turn them into goods with high use value and greater economic value. . This activity was carried out using the method of direct presentation of the material and continued with direct discussion and practice of making the products. The result of this activity is that the youth of the Bajo tribe already have an entrepreneurial spirit and are capable of exploiting the natural resources of their environment, as evidenced by their ability to produce processed fish food products. The objective of this activity was achieved, namely the formation of qualities and entrepreneurship among Bajo youth, as well as the skills of Bajo youth to use the resources of their environment in high value goods. use and higher economic value.
Pendampingan Pengembangan Potensi Wisata Sudamala Jogging Track bagi Perangkat Desa Sukawati, Gianyar, Bali
Authors: Novianti Kadek Dwi Pradnyani , Chaerunnisa Indah Utami , Natalia Sang Ayu Made Dewi Krisna , Sari Putu Yunita Wacana , Sudarmini Ni Made
Published: November 2024

Pariwisata menjadi industri yang berkembang sangat pesat dan menjadi salah satu sumber devisa di berbagai negara. Pariwisata Indonesia sempat melemah dikarenakan kondisi pandemi Covid-19 yang melanda dunia. Setelah pandemi covid-19 mereda, gerbang Indonesia dibuka kembali untuk kunjungan wisatawan mancanegara, sehingga mampu menaikan jumlah kunjungan wisatawan. Kabupaten Gianyar sebagai yang masih sangat kental dengan adat dan budaya serta kondisi alam yang masih sangat hijau menjadi pusat wisata di Provinsi Bali. Apabila ditilik lebih dalam salah satu potensi wisata alam yang ada di Desa Sukawati adalah Sudamala Jogging Track yang terletak di Jalan Pantai Purnama, Banjar Gelumpang, Kecamatan Sukawati, Kabupaten Gianyar yang dapat dikembangkan menjadi wisata healing atau wellness tourism bagi wisatawan yang datang berkunjung. Pengelolaan untuk Sudamala Jogging Track ini baru sebatas tiket masuk untuk pengunjung yaitu Rp 1.000,00 untuk warga Kecamatan Sukawati dan Rp 2.000,00 untuk warga yang berkunjung dari luar Kecamatan Sukawati. Hal ini menyebabkan tidak terlalu banyak profit yang diperoleh oleh Sudamala Jogging Track mengingat banyak pengembangan infrastruktur yang ingin dilakukan. Kegiatan pengabdian masyarakat yang dilakukan memiliki tujuan untuk mendampingi pemerintah Desa Sukawati untuk mengembangkan potensi wisata yang dimiliki oleh Sudamala Jogging Track ke dalam paket-paket wisata yang memiliki jual tinggi sehingga dapat memperoleh profit yang lebih optimal.