bluuebunny/crossref_metadata_2025_split huggingface dataset:
Microwave Solid-Phase Synthesis of Ni-Co Ferrites and their Activities in Liquid-Phase Oxidation of m-Xylene
Authors: Hasanguliyeva Nargalam M. , Shakunova Ninel V. , Litvishkov Yuriy N. 
Published: August 2024

In this paper, the activity of mono- and di-substituted cobalt and nickel ferrites prepared by microwave solid-phase synthesis was studied in the reaction of liquid-phase oxidation of m-xylene to m-toluic acid. It was established that among the tested samples, the di-substituted ferrites of spinel structure with the composition of Ni0,6Co0,4Fe2O4 have the shortest induction period and the highest initial rate of oxygen absorption. In order to clarify the role of the active surface of the Ni0.6Co0.4Fe2O4 catalyst and the volumetric conversions of m‑xylene in the nucleation stage of primary xylyl radicals, the dependence of the induction period was studied. Furthermore the rate of oxygen absorption was investigated as a function of the time of introduction of the inhibitor into the oxidized m-xylene at different ratios of the total size of the heterogeneous surface to the volume of m‑xylene loaded into the reactor (S/V). The dependence of the selectivity of the process to the targeted product, m-toluic acid, on the specific surface area of the catalyst samples was established and it was shown that selectivity to the by-product, m-methylbenzyl alcohol, increased and selectivity to m-toluic acid decreased in the case of cobalt ferrite with a relatively low specific surface area.It was shown that at the first stage reaction (5–10 min.), ie., in conditions of an as yet undeveloped radical chain reaction, in the presence of disubstituted ferrites of the composition (Ni1–xCoxFe2O4), in comparison with monosubstituted ferrites, a higher initial rate of formation of the primary oxidation product of m-xylene — m-methylbenzylhydroperoxide (main intermediate product obtained during formation of m-toluic acid) is observed. The correlation of the activity of mono- and disubstituted Ni-Co ferrites, in the conditions of developed heterogeneous catalytic conversion of m‑xylene, disubstituted Ni-Co ferrites are also characterized by higher rate of heterogeneous nucleation of free radicals and heterogeneous catalytic conversion of the intermediate product — m-toluic aldehyde to m‑toluic acid. This, in turn, provides a high degree of selectivity for the targeted product with the yield of 79.8 %.
Pengambilan Data Inklinasi Dan Azimuth Dalam Proses Measurement While Drilling (MWD) Menggunakan Metode Mud-Pulse Telemetry Pada Sumur X Lapangan Y
Authors: Geusan Buana Fauzan  , M.Mahlil Nasution  , Citra Wahyuningrum  
Published: August 2024

The Measurement While Drilling (MWD) process is essential in the oil and gas industry to obtain real-time data during drilling operations. One of the MWD methods commonly used is mud- pulse telemetry, which transmits data through mud pulses generated by the drilling fluid. This study focuses on the data acquisition process on MWD using Mud-pulse telemetry at Well X, which is located in Field Y. The purpose of this research is to analyze the performance of the MWD system, evaluate the quality of the data obtained through mud-pulse telemetry. The results showed that from the results of well X data, Mud Pulse Telemetry with Continuous Wave System can transmit data continuously and in real time and can measure up to a depth of 1,268 meters. The advantage of Mud Pulse Telemetry is that mud pulses can transmit data with a signal without being disturbed by interference from signals inside the earth, so the resulting noise tends to be a little lack ing in it. Despite the advantages of mud pulses, there are also disadvantages. One drawback is when there is a loss of circulation. Lost Circulation is the loss of drilling mud into the formation. This study recommends actions to optimize drilling conditions and fluid properties to improve the accuracy and reliability of MWD data.
Analisis Pengaruh Peluang Dan Tantangan Dalam Pengembangan Teknologi Pertanian Di Era Revolusi Industri 4.0 Terhadap Hasil Produksi Padi Di Musi Rawas
Authors: Syabawaihi Syabawaihi , Nur Annisa Febrina , Analisa Widya 
Published: August 2024

The goal of this investigation This study's focus is on how the industrial revolution unfolded. This journal's discussion of the elements influencing the growth of the industrial revolution is on how rice production affects the extent to which PTT and SRI technology is applied. This study aims to define and comprehend the effects of the industrial revolution. The purpose of this study is to determine variable values without developing, comparing, or seeking for correlations. It employs a single descriptive qualitative methodology. In this study, the sample method was purposeful sampling. A technique referred to as "purposive sampling" selects particular traits in accordance with the study's goals. According to research, technical advancements have.

Keywords: revolution, industry, rice.
Analisis Standarisasi Laboratorium IPA dalam Mendukung Proses Belajar Pembelajaran di MA Darus Sholah Jember
Authors: Zahra Rosa Fahriatuz , Sari Amalia Nurdina , Aqila Dayang Nur , Maharani Arinda , Puspitasari Nara Ratih Nur , Lajuardi Arini Maulidiya , Nuraini Lailatul , Harijanto Alex 
Published: August 2024

Laboratorium sekolah yang baik harus memenuhi kelengkapan peralatan dan memperhatikan fasilitas penunjang sebagaimana yang ditetapkan oleh Permendiknas No. 24 Tahun 2007 tentang standarisasi laboratorium. Dalam era pendidikan modern, laboratorium dianggap sebagai sarana yang penting untuk meningkatkan pemahaman siswa tentang konsep-konsep ilmiah. Penelitian ini bertujuan untuk mengetahui standarisasi laboratorium IPA di MA Darus Sholah Jember. Penelitian ini menggunakan metode deskriptif dengan teknik pengambilan data melalui obseravasi, wawancara, dan dokumentasi. Hasil penelitian menunjukkan bahwa laboratorium di MA Darus Sholah Jember memenuhi standar manajemen laboratorium yang baik. Hal ini dapat dilihat dari beberapa aspek seperti perencanaan, pelaksanaan, pengawasan, evaluasi, dan pengembangan. Dari hasil penelitian dapat disimpulkan bahwa daya dukung alat dan bahan seharusnya ditata kembali dan disesuaikan dengan klasifikasi yang meliputi berat, sifat, alfabet, dan jenis lainnya. Dengan adanya klasifikasi tersebut dapat memudahkan untuk mencari dan memakai alat dan bahan yang akan digunakana.
Evaluasi Dampak Lingkungan Dari Penggunaan Plastik Sekali Pakai
Authors: Jannah Nur Azizatul , Sudarti Sudarti , Yushardi Yushardi 
Published: August 2024

Indonesia merupakan salah satu negara berkembang yang masih memiliki permasalahan krusial dalam hal polusi sampah plastik. Sampah adalah material yang tidak digunakan lagi dan dibuang setelah pemakaian pertama. Sampah dapat berasal dari berbagai sumber, seperti rumah tangga, industri, dan proses alam. Kehadiran sampah plastik memiliki banyak ancaman bagi lingkungan dan kesehatan. Maka dari itu, tujuan dari penulisan artikel ini ialah untuk melakukan evaluasi terkait dampak lingkungan dari penggunaaan plastik sekali pakai. Metode yang digunakan ialah kualitatif deskriptif dengan model literatur review. Hasilnya menunjukkan bahwa Plastik sekali pakai telah memberikan dampak yang serius terhadap lingkungan. Polusi plastik sekali pakai berdampak pada ratusan spesies perairan dan darat, biasanya melalui belitan atau tertelan, yang mengakibatkan dampak lingkungan yang tidak diinginkan.
Pendugaan Lapisan Akuifer Menggunakan Metode Geolistrik Tahanan Jenis Konfigurasi Schlumberger Secara Vertikal di Perumahan BTN Wamena, Kabupaten Jayawijaya
Authors: Mantiri Steven Y. Y. , Bungkang Yusuf , Wenda Christina Aprilia 
Published: August 2024

Penelitian tentang pendugaan akuifer air tanah dilakukan di perumahan BTN Wamena, Kabupaten Jayawijaya. Penelitian ini bertujuan untuk menduga letak dan kedalaman lapisan akuifer. Metode penelitian yang digunakan adalah metode survei lapangan. Survei lapangan menggunakan survei metode geolistrik tahanan jenis dengan konfigurasi Schlumberger secara vertikal (sounding). Penelitian ini menggunakan alat geolistrik IRES T300f. Nilai resistivitas dihitung berdasarkan nilai beda potensial dan kuat arus listrik yang tercatat pada alat geolistrik. Data hasil pengukuran diolah dengan menggunakan perangkat lunak IP2WIN untuk menentukan letak dan kedalaman lapisan akuifer. Hasil penelitian menunjukkan bahwa lapisan akuifer ditemukan pada 3 (tiga) titik pengukuran. Pada titik 1, lapisan akuifer terdapat pada lapisan 7 dan 9. Lapisan 7 memiliki nilai resistivitas 6,288 Ωm dengan kedalaman 16 m – 29,37 m tergolong lapisan akuifer bebas. Lapisan 9 memiliki nilai resistivitas 3,903 Ωm dengan kedalaman 63,35 m – 118,7 m tergolong lapisan akuifer tertekan. Pada titik 2, lapisan akuifer terdapat pada lapisan 4, 8 dan 10. Lapisan 4 memiliki nilai resistivitas 4,825 Ωm dengan kedalaman 7,614 – 8,909 m tergolong akuifer bebas. Lapisan 8 memiliki nilai resistivitas 5,079 Ωm dengan kedalaman 20,53 m – 39,11 m tergolong lapisan akuifer tertekan. Lapisan 10 memiliki nilai resistivitas 7,91 Ωm dengan kedalaman 84,82 m – 188 m tergolong lapisan akuifer tertekan. Pada titik 3, lapisan akuifer terdapat pada lapisan 8, yang memiliki nilai resistivitas 5,267 Ωm dengan kedalaman 28,46 m – 59,45 m tergolong akuifer tertekan. Air tanah yang terkandung dalam lapisan-lapisan akuifer pada setiap titik pengukuruan cenderung keruh karena lebih banyak mengandung lempung sebagai lapisan pelindung atau kedap air.
Modeling turning performance of Inconel 718 with hybrid nanofluid under MQL using ANN and ANFIS
Authors: Kulkarni Paresh , Chinchanikar Satish 
Published: August 2024

Soft computing techniques, with their self-learning capabilities, fuzzy principles, and evolutionary computational philosophy, are being increasingly utilized in modeling complex machining processes. This study develops artificial neural networks (ANN) and adaptive neuro-fuzzy inference system (ANFIS) models to predict cutting force, surface roughness, and tool life during Inconel 718 turning with a hybrid nanofluid under minimum quantity lubrication. The hybrid nanofluid was created by combining 50–50% multi-walled carbon nanotubes and aluminum oxide nanoparticles with vegetable-based palm oil. ANFIS and ANN models were constructed with data from well-designed machining trials. The ANFIS model predicted machining performance using fuzzy logic, whereas the ANN model employed a feedforward neural network design. The results showed that both models were able to accurately predict the machining performance. However, ANFIS outperforms ANN in terms of accuracy, with prediction errors of 4.47% and 10.97% for surface roughness, and 6.05% and 9.86% for tool life, respectively. However, the accuracy of cutting force prediction was slightly higher with the ANN. This shows that ANFIS could be a better option for forecasting the machining performance while turning Inconel 718. However, this study suggests further investigation into ANFIS modeling, with a focus on membership function parameter optimization through hybrid optimization techniques.
TLSTSRec: Time-aware long short-term attention neural network for sequential recommendation
Authors: Chen Hongwei , Liu Luanxuan , Chen Zexi 
Published: August 2024

In recent years, sequential recommendation has received widespread attention for its role in enhancing user experience and driving personalized content recommendations. However, it also encounters challenges, including the limitations of modeling information and the variability of user preferences. A novel time-aware Long-Short Term Transformer (TLSTSRec) for sequential recommendation is introduced in this paper to address these challenges. TLSTSRec has two major innovative features. (1) Accurate modeling of users is achieved by fully leveraging temporal information. Time information is modeled by creating a trainable timestamp matrix from both the perspectives of time duration and time spectrum. (2) A novel time-aware Transformer model is proposed. To address the inherent variability of user preferences over time, the model combines long-term and short-term temporal information and adjusts the personalized trade-offs between long-term and short-term sequences using adaptive fusion layers. Subsequently, newly designed encoders and decoders are employed to model timestamps and interaction items. Finally, extensive experiments substantiate the effectiveness of TLSTSRec relative to various state-of-the-art sequential recommendation models based on MC/RNN/GNN/SA across a spectrum of widely used metrics. Furthermore, experiments are conducted to validate the rationality of the TLSTSRec structure.
Explore the Role of Frailty as a Contributor to the Association Between AT(N) Profiles and Cognition in Alzheimer’s Disease
Authors: Han Bao-Lin , Ma Ling-Zhi , Han Shuang-Ling ,   for the Alzheimer’s Disease Neuroimaging Initiative, Mi Yin-Chu , Liu Jia-Yao , Sheng Ze-Hu , Wang Hui-Fu , Tan Lan 
Published: August 2024

Background: The relationship between Alzheimer’s disease (AD)-related pathology and cognition was not exactly consistent. Objective: To explore whether the association between AD pathology and cognition can be moderated by frailty. Methods: We included 1711 participants from the Alzheimer’s Disease Neuroimaging Initiative database. Levels of cerebrospinal fluid amyloid-β, p-tau, and t-tau were identified for AD-related pathology based on the amyloid-β/tau/neurodegeneration (AT[N]) framework. Frailty was measured using a modified Frailty Index-11 (mFI-11). Regression and interaction models were utilized to assess the relationship among frailty, AT(N) profiles, and cognition. Moderation models analyzed the correlation between AT(N) profiles and cognition across three frailty levels. All analyses were corrected for age, sex, education, and APOE ɛ4 status. Results: In this study, frailty (odds ratio [OR] = 1.71, p < 0.001) and AT(N) profiles (OR = 2.00, p < 0.001) were independently associated with cognitive status. The model fit was improved when frailty was added to the model examining the relationship between AT(N) profiles and cognition ( p < 0.001). There was a significant interaction between frailty and AT(N) profiles in relation to cognitive status (OR = 1.12, pinteraction = 0.028). Comparable results were obtained when Mini-Mental State Examination scores were utilized as the measure of cognitive performance. The association between AT(N) profiles and cognition was stronger with the levels of frailty. Conclusions: Frailty may diminish patients’ resilience to AD pathology and accelerate cognitive decline resulting from abnormal AD-related pathology. In summary, frailty contributes to elucidating the relationship between AD-related pathology and cognitive impairment.
A biomechanical study of a polymer material bundled rib fracture fixator
Authors: Zhang Yongmin , Wang Dongbin , Gong Hao , Tang Haosen , Dong Guangqi , Wang Bin , Xia Honggang 
Published: August 2024

BACKGROUND: Rib fractures are one of the most common blunt injuries, accounting for approximately 10% of all trauma patients and 60% of thoracic injuries. Multiple rib fractures, especially flail chest, can cause local chest wall softening due to the loss of rib support, leading to paradoxical breathing, severe pain, and a high likelihood of accompanying lung contusions. OBJECTIVE: This study investigates the mechanical properties of a new polymer material rib internal fixator to provide theoretical data for its clinical use. METHODS: We conducted in vitro mechanical tests on 20 fresh caudal fin sheep ribs, using different fracture models across four randomly assigned groups (five ribs per group). The fixators were assessed using non-destructive three-point bending, torsion, and unilateral compression tests, with results averaged. Additionally, finite element analysis compared stress and strain in the polymer fixators and titanium alloy rib plates during bending and torsion tests. RESULTS: In vitro tests showed that the polymer fixators handled loads effectively up to a maximum without increase beyond a certain displacement. Bending and torsion tests via finite element analysis showed the polymer material sustained lower maximum equivalent stresses (84.455 MPa and 14.426 MPa) compared to titanium alloy plates (219.88 MPa and 46.47 MPa). CONCLUSION: The polymer rib fixator demonstrated sufficient strength for rib fracture fixation and was superior in stress management compared to titanium alloy plates in both bending and torsion tests, supporting its potential clinical application.
Determination of IC50 Root Extracts of Bajakah Tampala (Spatholobus littoralis Hassk) and Kalalawit (Uncaria gambir Roxb) Using DPPH Method
Authors: Merdita Melsya , Febriyanti Rizki , Amananti Wilda 
Published: August 2024

Indonesia is one of the countries whose people use traditional medicine as an alternative medicine to treat various types of diseases, one of which is by using bajakah root. The purpose of this study was to determine the value of IC50 and compare the antioxidant activity of the steel root extract of tampala and kalalawit types. Research methods using experimental methods. The population used is the root of bajakah type tampala and kalalawite. Samples were obtained from an online shop with a simple random sampling technique. Extracted using the reflux method. Determination of IC50 using the DPPH method (1,1- diphenyl-2- picrilhydrazyl). The results of the research on the IC50 value obtained from the roots of bajakah tampala are 46.7304 ppm, which is classified as having anti-ochistic activity and is very strong because it <50 ppm and kalalawit bajakah root of 53.1006 ppm is classified as having strong antioxidant activity because it >50-100 ppm. However, when compared to the vitamin C comparison solution which has a lower value of IC50, which is 14.6217 ppm, it has very strong antioxidant activity. The efficacy of this study value of IC50 in the roots of the tampala type of steel is lower, indicating a stronger antioxidant activity than the roots of the kalalawit type bajakah.
Uji Nanoemulsi Ecoenzym Terhadap Bakteri Staphylococcus aureus
Authors: Anindita Reza , Nathalia Dede Dwi , Beandrade Maya Uzia , Putri Intan Kurnia , Sari Afrinia Eka , Setyodewi Elisabeth 
Published: August 2024

Penemuan ecoenzyme sebagai cairan fermentasi dari sampah organik sayuran dan buah-buahan telah dimanfaatkan untuk pupuk organik tanaman, disinfektan, hand sanitizer, sabun antiseptik, dan agen degradasi limbah domestik. Namun uji coba ecoenzym sebagai bahan baku sediaan kesehatan masih belum dilakukan. Melihat hal tersebut maka diperlukan penelitian uji coba kemampuan antibakteri nanoemulsi ecoenzyme terhadap bakteri Staphylococcus aureus. Penelitian ini bertujuan untuk mengetahui kemampuan antibakteri nanoemulsi ecoenzyme terhadap bakteri S.aureus. Desain penelitian ini adalah eksperimental. Sampel yang digunakan adalah nanoemulsi ecoenzyme dengan Formula 1 (F1) 20%, Formula 2 (F2) 25%, dan Formula 3 (F3) 30%. Cara kerja penelitian ini meliputi pembuatan ecoenzyme, pembuatan nanoemulsi ecoenzyme, uji nanopartikel ecoenzyme, dan pengujian nanoemulsi ecoenezyme terhadap bakteri S. aureus dengan metode Kirby baeur. Hasil penelitian menunjukkan ukuran nanopartikel ecoenzyme pada F1 20%, F2 25%, dan F3 30% masing-masing sebesar 38,9 nm, 65,07 nm, dan 146,2 nm. Hasil uji kemampuan antibakteri nanoemulsi ecoenzyme F1 20%, F2 25%, dan F3 30% terhadap S. aureus menghasilkan diameter zona hambat masing masing sebesar 4,3 mm (resisten), 4,3 mm (resisten), dan 6,7 mm (resisten). Kesimpulan penelitian ini adalah sediaan nanoemulsi ecoenzyme belum efektif dalam menghambat pertumbuhan bakteri S. aureus.
Isolasi Dan Karakterisasi Bakteri Asam Laktat Dari Susu Kuda Bima (Equus sp.) Yang Berpotensi Sebagai Probiotik
Authors: Suryani Elsa Mega , Gaffar Affan 
Published: August 2024

Tujuan dari penelitian ini adalah mengisolasi dan karakterisasi bakteri asam laktat dari susu kuda yang berpotensi sebagai probiotik. Identifikasi bakteri meliputi pewarnaan gram, uji aktivitas antimikroba, uji aktivitas hemolitik, uji toleransi terhadap pH dan garam empedu. Hasil penelitian menunjukkan isolat C5 yang diisolasi dari sampel susu kuda memiliki potensi sebagai probiotik. Karakterisasi meliputi bentuk bakteri basil, memiliki aktivitas antimikroba terhadap bakteri patogen Escherichia coli ATCC sebesar 0,40 mm, bersifat gamma hemolisis, toleransi terhadap pH 2, 3, 5 dan toleransi terhadap garam empedu 0,4-1%.
A multiparametric analysis including single-cell and subcellular feature assessment reveals differential behavior of spheroid cultures on distinct ultra-low attachment plate types
Authors: Vitacolonna Mario , Bruch Roman , Agaçi Ane , Nürnberg Elina , Cesetti Tiziana , Keller Florian , Padovani Francesco , Sauer Simeon , Schmoller Kurt M. , Reischl Markus , Hafner Mathias , Rudolf Rüdiger 
Published: August 2024

Spheroids have become principal three-dimensional models to study cancer, developmental processes, and drug efficacy. Single-cell analysis techniques have emerged as ideal tools to gauge the complexity of cellular responses in these models. However, the single-cell quantitative assessment based on 3D-microscopic data of the subcellular distribution of fluorescence markers, such as the nuclear/cytoplasm ratio of transcription factors, has largely remained elusive. For spheroid generation, ultra-low attachment plates are noteworthy due to their simplicity, compatibility with automation, and experimental and commercial accessibility. However, it is unknown whether and to what degree the plate type impacts spheroid formation and biology. This study developed a novel AI-based pipeline for the analysis of 3D-confocal data of optically cleared large spheroids at the wholemount, single-cell, and sub-cellular levels. To identify relevant samples for the pipeline, automated brightfield microscopy was employed to systematically compare the size and eccentricity of spheroids formed in six different plate types using four distinct human cell lines. This showed that all plate types exhibited similar spheroid-forming capabilities and the gross patterns of growth or shrinkage during 4 days after seeding were comparable. Yet, size and eccentricity varied systematically among specific cell lines and plate types. Based on this prescreen, spheroids of HaCaT keratinocytes and HT-29 cancer cells were further assessed. In HaCaT spheroids, the in-depth analysis revealed a correlation between spheroid size, cell proliferation, and the nuclear/cytoplasm ratio of the transcriptional coactivator, YAP1, as well as an inverse correlation with respect to cell differentiation. These findings, yielded with a spheroid model and at a single-cell level, corroborate earlier concepts of the role of YAP1 in cell proliferation and differentiation of keratinocytes in human skin. Further, the results show that the plate type may influence the outcome of experimental campaigns and that it is advisable to scan different plate types for the optimal configuration during a specific investigation.