bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dietary Effect of S-Methylmethionine Sulfonium Chloride on Growth, Serum Biochemical Parameters, Body Composition, and Expression of Some Related Genes in Oreochromis niloticus
Authors: Gewida Ahmed G.A. , Abouzed Tarek Kamal , Abdelghany Mohamed F. , Khames Doaa K. , Zayed Mohamed M. , Elsawy Hanan B. , AbdEl-Kader Marwa F. , Naiel Mohammed A.E. 
Published: May 2023

Abstract
The main objective of the current trial was to investigate the impacts of tilapia diets supplemented with S-methylmethionine sulfonium chloride (MMSC) on the growth performance, feed efficiency, body analysis, blood biochemistry and regulation of myostatin (MSTN) and insulin-like growth factor-1 (IGF-1) genes of nile tilapia (Oreochromis niloticus). The experimental fish (n=180) weighing 22.4±0.17 g were allocated randomly into three equal groups in triplicate as follows; the control group received an un-supplemented diet; the other two groups received two different levels of MMSC (0.2 and 0.4 g/kg) for eight weeks. The obtained findings demonstrated that tilapia diets enriched with small dosages of MMSC considerably (P<0.05) enhanced all assessed growth performance and feed efficiency indicators when compared with the control group. When compared to the control group, tilapia meals supplemented with 0.2 g MMSC significantly (P<0.05 or 0.01) raised blood protein profile, particularly total protein and globulin levels. Contrarily, blood creatinine levels were significantly (P<0.01) reduced in the group of tilapia fed diets containing MMSC (0.2 or 0.4 g/kg) compared to the group without receiving any supplementation. Whereas, fish body analysis showed higher significant increases in crude protein and ether extract levels (P<0.01) as well as reduced ash content (P<0.05) in the fish group that received lower MMSC doses in comparison to other treated and control groups. In addition, MMSC dietary supplementation significantly downregulated the expression of MSTN and upregulated IGF-1 mRNA expression compared with the control group. Additionally, both dosages of MMSC supplementation modestly enhanced the intestinal villus histomorphometric score indices with observed tall, thick, and various broad tips in comparison to the control group. In conclusion, it could be recommended that fish diets supplemented with 0.2 g MMSC per kg diet may promote the growth and general health status of Nile Tilapia.
Remote Sensing Image Object Detection Method Based On Improved YOLOv3
Authors: Lu Zhiyuan , Liu Bailin 
Published: May 2023

AbstractIn order to solve the problem that irregular targets and dense targets are difficult to be detected in optical remote sensing images, this paper improved the YOLOV3 model Firstly, in order to further combine the feature information of different scales, the PaNet structure is introduced into the FPN part of the original YOLOv3, and the obtained effective feature layer is continued to be extracted for a round of feature. The feature is not only up-sampled to achieve feature fusion, but also down-sampled again to achieve enhanced feature fusion SimOTA method is introduced to dynamically match positive samples and set different positive sample numbers for different targets, which not only improves the speed of the algorithm, but also reduces the extra hyperparameters Experimental verification using richer DOIR data sets shows that the detection ability of the improved algorithm is significantly improved. Compared with the original YOLOv3, its mAP improves by 15.1 points, among which the detection accuracy of dense small targets is improved the most.
One Novel Soft-Starting Control Strategy for Induction Motor Based on Space Voltage Vectors
Authors: Xie Shihong , Liang Rongmao , Liang Li , Yang Zhihao , Gao Xin 
Published: May 2023

AbstractThis study presents a novel control strategy of discrete variable frequency (DVF) based on space voltage vectors for a three-phase induction motor (IM) soft-starting. The proposed strategy is developed in four steps. First, conducting states of the three-phase thyristor circuits are analysed, and the formation mechanism of space voltage vectors is also demonstrated. Then, DVF control strategy of IM based on hexagon flux linkage loci is expounded categorically, which contains frequency f/7 control, frequency f/4 control, frequency f/3 control and ramp voltage control. Next, under two-phase stationary coordinate system, stator flux equation of IM is derived, and the decrease in stator flux when zero-vector voltage working is calculated accurately. In the end, an experimental system of IM based on three-phase thyristor circuits is constructed, and the experimental results are dealt with and compared with the usual ramp voltage technique. The study results show that IM driven by the proposed strategy can steadily operate at the preset discrete frequency, and the effective value of starting current of IM can be decreased by nineteen percent. The experimental results verify the conclusions.
Simulation of a Power Skiving Gear Cutting Process
Authors: Hrytsay Ihor , Stupnytskyy Vadym , Slipchuk Andrii 
Published: May 2023

Abstract
The results of the computer simulation of the cutting process of gears by the power skiving method are presented. Following the kinematics of the process, a method for generating 3D geometric models of undeformed sheared layers were developed, and their parameters were analyzed. The influence of tool geometry and technological parameters on cutting conditions is investigated. The simulation results and calculation of the tangential force and torque on the tool axis and their influence on the error due to angular elastic deformation of the tool are given.
Study of Interaction Water with Epoxy Resin – Impact on Mechanical Properties of Glass/Epoxy Laminate
Authors: Popardovská Eva , Popardovský Vladimír , Danko Ján 
Published: May 2023

Abstract
The aim of the article is to study the influence of the water content in the epoxy resin on the mechanical properties of the result laminate. The mechanism of resin contamination by air humidity is considered. The NIR spectrometry method was chosen to monitor the water content in the resin. The mechanical strength parameters of the laminate created from clean and water-contaminated resin were determined on the base of simulation and real tensile tests.
Pengaruh Variasi Bentuk Adsorben Karbon Aktif dan Scale-up Kolom Terhadap Kinerja Adsorpsi CO2 Dalam Biogas
Authors: Suprianti Yanti , Pangestu Yoga Rahmat , Iriani Purwadi 
Published: May 2023

Biogas as a renewable energy source is now starting to be considered as an alternative energy to replace BBM and CNG. Biogas from cow dung generally has a concentration of 50-70% CH4 as a substance that can be used as fuel, accompanied by 25-50% CO2, 0.3-3% N2, 1-5% H2, and H2S. The presence of accompanying substances, especially CO2, which has no calorific value (cannot be burned), can reduce the overall calorific value of biogas. One way to separate the CO2 gas is by adsorption. However, at a small column capacity, the adsorbent is often saturated quickly after being operated for a certain time. One way to get around this is to make the adsorbent into a more compact form, such as pellets. By combining granular and pellet activated carbon, this study wanted to identify the effect of variations to produce the best biogas composition and compare its performance when scaled up. The results showed that mixture A (70% granular activated carbon and 30% pellet) produced the best biogas, namely 83.1% in the initial column and 89.3% in the scale up column, with CO2 impurities removed and a small amount of other gases. The absorption performance in the form of adsorption effectiveness showed that each variation showed 100% effectiveness. The breakthrough curve shows that mixture C (30% granular activated carbon and 70% pellet) gave the highest resistance for 7 minutes on the initial column and 10 minutes on the scale up column. The volume of biogas that was adsorbed, the volume of biogas/column height, and the total amount of remove solute were best indicated by mixture A with 72 Liters, 180 Liters/m, and 8,208 Liters in the initial column, and 159 Liters, 212 Liters/m, respectively. and 21,942 Liters in the scale up column. Scale up has a significant impact on the performance of mixed C adsorbent with an increase in the volume of biogas that is adsorbed by 2.75x, the volume/height of the column increases by 1.47x, and the total of remove solute by 3.29x.
Keywords: adsorption, adsorbent, granular activated carbon, pellet, scale up
Cultural Code of Pridnestrovie in the Conditions of Multiculturalism
Authors: Golub Natalia A. 
Published: May 2023

The paper considers the cultural code of polyethnic Pridnestrovie in the cultural discourse. The cultural code is the key to understanding the culture of the peoples living in this territory, taking into account the unique features of historical development paths that allow representatives of various nationalities to peacefully coexist and develop in the conditions of non-recognition. The Pridnestrovian Moldavian Republic, formed on September 2, 1990, exists de facto, but not recognized de jure.The culture of the population living there was formed under the influence of both geographical, historical, registering, organizational aspects and political factors, and as a response to the ongoing discriminatory interethnic policy of neighbouring Moldova. This is due to the multinational composition of the republic (more than 70 ethnic groups), which is reflected in the heterogeneity of culture — in the form of intersection of cultural circles of various ethnic and cultural branches (Eastern Romanesque, East Slavic, South Slavic and Turkic). Assimilation processes taking place on the territory of the newly formed multi-ethno-cultural state have led to the formation of just such an ethnic consciousness of the population, which is united not only by a single history and territory, language and culture, but also on the basis of a formed special mentality, characterized by a tolerant worldview. Through the prism of historical realities, legislative acts, state cultural policy, the author considers the necessity of applying multiculturalism, which allows ensuring the rights of ethnic communities of Pridnestrovie, preserving and developing their cultural differences.The author proposes for consideration and discussion his vision of the markers of the cultural code — ethnic culturalness, ethnic tolerance, Russian culturalness and information culture. In Pridnestrovie, where Orthodox culture dominates with clearly expressed values of poly-confessionality, intercultural communications are built on the basis of preserving their national and cultural identity, contribute to a positive perception and understanding of behavioural reactions, disclosure of aesthetic formulas, specifics of worldview and behaviour of such a young community of the population of region as the Pridnestrovian people.
Stranger things: referencias de los años 80 y su impacto en el público
Authors: Parejo María Macarena , López Belén Vázquez 
Published: May 2023

Internet ha cambiado la forma de consumir cine y televisión. Con la aparición de plataformas como Netflix, series como Stranger Things han encandilado al gran público. La intención del trabajo que aquí se expone es analizar las estrategias de los creadores de esta serie para convertirla en un éxito mundial. Para ello, se parte de la hipótesis de que su triunfo se debe a la utilización de referencias que homenajean a la generación de los 80 en todas sus vertientes: cine, música, ropa, objetos. Para poder llevar a cabo este análisis, se ha procedido, primeramente, a realizar un repaso por la evolución sufrida en la forma de ver series. Tras esta contextualización se ha optado por una metodología basada en un análisis de contenido a partir de diferentes unidades de análisis que han ayudado a distinguir todas las referencias que aparecen en la serie en cuanto a las variables mencionadas. Con todo, y a partir de los resultados, ha sido posible observar cómo, efectivamente, el enigma de su fama radica en haber hallado ese punto en común que reside en la memoria de las personas, en su capacidad de vocación de la nostalgia, y que hace que los recuerdos florezcan.
The notion of access to health care in a large-scale social health protection initiative: a case study of ‘Sehat Sahulat Programme’ at Khyber Pakhtunkhwa, Pakistan
Authors: Khan Sheraz A , Cresswell Kathrin , Sheikh Aziz 
Published: May 2023

Background Sehat Sahulat Programme (SSP), a health insurance initiative, was launched by the Government of Khyber Pakhtunkhwa (GoKP) in Pakistan to improve access to quality health services. In this paper, we describe the notion of access under SSP, present stakeholders’ views on access-related challenges, and suggest ways forward to realise SSP’s access-related objective in the broader context of its contribution towards Pakistan’s drive to achieve Universal Health Coverage (UHC). Methods We employed a case study design approach using three data sources. We used official GoKP programme documents to capture the chronology of events (policy interventions), in-depth interviews to explore the drivers behind the events and non-participant observations to understand the decision-making and implementation processes. We employed maximum variation sampling. Access to documents and observation sites was gained through the SSP director. We recruited interviewees through direct and indirect approaches and conducted thematic analysis. Findings GoKP engaged the State Life Insurance Corporation (SLIC) of Pakistan as a purchaser. SLIC purchased services from public and private hospitals for SSP patients, up to 600,000 Pakistani Rupees (PKR) per family per year. Considering this insurance coverage, GoKP officials claimed SSP made health care accessible, which the development partners contested. Instead of the narrow finance-centric definition by GoKP, the development partners highlighted the broader dimensions of access, including the services’ acceptability and availability. Tensions existed between the interpretation of the stakeholders on different dimensions of access. For instance, GoKP and SLIC claimed that including private hospitals in SSP improved services’ availability, but development partners noted an under-supply of private providers in remote districts of the province. Bridging such an undersupply, SLIC made inter-district referrals, which the patient advocates noted led to travel costs and geographical barriers. Similarly, GoKP officials claimed SSP had good acceptability. The providers noted that SSP’s acceptability was damaged by limited patient choice, low package rates, and delayed claims payments. Conclusions This analysis suggests that SSP had challenges with the acceptability and geographical dimensions of access which GoKP needed to address. A key transferrable lesson is that demand-side intervention (insurance) might not improve access with a weak supply side. Therefore, countries contemplating improving access to services enroute to achieving UHC need to address both supply and demand-side considerations.
Changes in Mediterranean Coastline According to the Coastal Type and Land Cover under Climate Change: The Case of South-east Spain
Authors: Marcet Llorens Pedro , Navarro-Pedreño José 
Published: May 2023

Coastline changes were analyzed considering the land cover types and the analysis of the causes that have determined these changes during the past decades. Through the overlapping of aerial photographs and GIS analysis, the results showed that the land surface increased with respect to the previous stage, gaining terrain to the sea, but this increment was caused by anthropogenic processes. In fact, without human pressure, the land surface beside the coastal line would have decreased, especially on the sandy beaches and coastal dunes. Therefore, the beaches are one of the most vulnerable ecosystems and geomorphological systems due to erosion and lack of sediment supply associated with the modified river courses (i.e. by the construction of reservoirs, concrete channeling, etc.), the inner land use changes, and the effects of global warming on the sea level. Climate change studies predict specific increases in the sea level along the coast. The aim of this work is to know if anthropic activity can reverse the effects of sea level rise and coastal erosion. In fact, it has been done for decades with measures aimed to correct impacts and favour economic activity (i.e. maintaining tourism resources) and not from the environmental issues
Systematic Literature Review: Teleworking dan Kinerja Karyawan pada Era Pandemi
Authors: Rizqi Abdillah Rahman 
Published: May 2023

Pandemi Covid-19 memaksa berbagai sektor perusahaan untuk merubah sistem kerjanya menjadi Work From Home (WFH) untuk mengurangi penyebaran virus Covid-19. WFH atau teleworking merupakan praktik kerja yang sedang berkembang, dimana karyawan bekerja pada suatu tempat di luar kantor selama beberapa kali dalam seminggu (Lamond, Daniels, & Standen, 1997). Penelitian ini bertujuan untuk mengetahui efektivitas WFH terhadap kinerja karyawan di era pandemi dan faktor-faktor yang mempengaruhinya. Metode yang digunakan adalah Systematic Literature Review dengan membatasi artikel yang terbit pada rentang waktu selama pandemi Covid-19 tahun 2020 hingga 2022. Hasil penelusuran yang didapatkan bahwa Teleworking atau WFH memiliki pengaruh terhadap kinerja karyawan yang dipengaruhi beberapa faktor, di antaranya faktor individu, faktor pekerjaan, faktor lingkungan.
PENTINGNYA DISIPLIN DALAM PENDIDIKAN KARAKTER BAGI PEMBENTUKAN IMAN MASYARAKAT TORAJA
Authors: Batara Apriliani 
Published: May 2023

Tujuan kajian dalam tulisan ini yaitu untuk memaparkan tentang pentingnya sebuah sikap disiplin untuk pembentukan karakter sehingga memunculkan pemahaman yang baik tentang budaya khusususnya kebudayaan masyarakat toraja. Dengan memiliki sikap disiplin seseorang dapat bertanggung jawab tehadap apa yang telah di percayakan kepadanya. Adanya pemahaman yang baik tentang kepemimpinan , sesorang juga di harapkan mampu untuk menjadi seorang pemimpin yang baik, baik dalam lingkungan masayarakat maupun dalam lingkungan gereja.
HASIL BELAJAR SISWA PADA PELAJARAN BIOLOGI MELALUI METODE PEMBELAJARAN DEMONSTRASI
Authors: Serasi Br. Ginting  
Published: May 2023

Tujuan penelitian ini adalah untuk: meningkatkan hasil belajar siswa pada pelajaran Biologidi kelas X MIA – 2 melalui Metode Pembelajaran Demonstrasi di SMA Negeri 1 Kutalimbaru Tahun Pelajaran 2019/2020. Metode yang digunakan dalam penelitian adalah Metode Penelitian Tindakan Kelas dengan menggunakan 2 siklus. Subjek penelitian ini adalah siswa kelas VII SMA Negeri 1 Kutalimbaru sebanyak 34 orang. Instrumen yang digunakan untuk memperoleh data adalah menggunakan test, angket dan observasi. Rentang nilai untuk tes adalah 1-100. Instrumen yang di gunakan untuk pengelolaan data adalah menggunakan perhitungan jumlah rata-rata siswa yang tuntas, persentase jumlah siswa yang belum tuntas dan persentase jumlah siswa yang sudah tuntas. Hasil Penelitian ini menunjukkan terdapat peningkatan hasil belajar dengan menerapkan Metode pembelajaran demonstrasi dengan hasil sebagai berikut: (1) terdapat peningkatan rata-rata hasil belajar siswa, dimana pada test awal rata-rata hasil belajar siswa adalah 43,23, pada siklus I meningkatkan menjadi 66,18 kemudian pada siklus II meningkat lagi menjadi 77,65, terdapat peningkatan jumlah siswa yang tuntas, dimana pada test awal jumlah siswa yang tuntas hanya 0%, meningkat menjadi 64,71% pada siklus I kemudian meningkat lagi menjadi 88,24% pada siklus II, terdapat penurunan jumlah siswa yang tidak tuntas, dimana pada test awal jumlah siswa yang tidak tuntas mencapai 100%, pada siklus I menjadi 35,29% kemudian pada siklus II menurun lagi menjadi 11,76% dengan kata lain hanya 4 siswa saja yang memperoleh nilai 60 dan selebihnya (30) siswa memperoleh nilai 70 dan di atas 70.
MENINGKATKAN HASIL BELAJAR SISWA PADA PELAJARAN ILMU PENGETAHUAN ALAM (IPA) MELALUI STRATEGI PEMBELAJARAN BERBASIS MASALAH
Authors: Mangala Simanjuntak  
Published: May 2023

Tujuan penelitian ini adalah untuk: Meningkatkan hasil belajar siswa pada Pelajaran Ilmu Pengetahuan Alam (IPA) di Kelas IX-B melalui strategi pembelajaran Berbasis Masalah di SMP Negeri 42 Medan Tahun Pelajaran 2019/2020. Metode yang digunakan dalam penelitian adalah Metode Penelitian Tindakan Kelas dengan menggunakan 2 siklus. Subjek penelitian ini adalah siswa kelas IX-B SMP Negeri 42 Medan sebanyak 32 orang. Teknik yang digunakan untuk memperoleh data adalah menggunakan test, angket dan observasi. Rentang nilai untuk tes adalah 1-100. Teknik analisa data yang digunakan adalah menggunakan perhitungan jumlah nilai rata-rata siswa, persentase jumlah siswa yang tuntas dan persentse jumlah siswa yang belum tuntas. Hasil Penelitian ini menunjukkan terdapat peningkatan hasil belajar dengan menerapkan strategi pembelajaran Berbasis Masalah dengan hasil sebagai berikut: (1) terdapat peningkatan rata-rata hasil belajar siswa, dimana pada tes awal rata-rata hasil belajar siswa adalah 30,63, pada siklus I meningkatkan menjadi 64,69 kemudian pada siklus II meningkat lagi menjadi 75,63 (2) terdapat peningkatan jumlah siswa yang tuntas, dimana pada tes awal jumlah siswa yang tuntas hanya 0%, meningkat menjadi 53,13% pada siklus I kemudian meningkat lagi menjadi 87,5% pada siklus II, (3) terdapat penurunan jumlah siswa yang tidak tuntas, dimana pada tes awal jumlah siswa yang tidak tuntas mencapai 100%, pada siklus I menjadi 46,87% kemudian pada siklus II menurun lagi menjadi 12,5% dengan kata lain hanya 4 siswa yang memperoleh nilai di bawah 70 dan selebihnya (28) siswa memperoleh di atas 70.
Column Chromatography Fractionation and Antioxidant Activity of Passiflora foetida Leaves
Authors: Triadisti Nita , Zamzani Irfan 
Published: May 2023

Available synthetic antioxidants have been reported to have mutagenic and toxic effects. On the other hand, natural antioxidants show their superiority as they are not or less toxic. Passiflora foetida has the potential as an antioxidant, but the investigation of the antioxidant activity of the P. foetida chromatography column fraction has not been reported. This studied aims to investigate the antioxidant activity of the column chromatographic fractions of P. foetida leaves. An antioxidant assay using the DPPH and FRAP methods. The extraction was carried out by graded maceration, then fractionation using column chromatography. The antioxidant activity test was carried out using the DPPH and FRAP methods. Thin Layer Chromatography analysis was performed to determine the chromatogram pattern. The EC50 using DPPH method from n-hexane extract: 129.035 µg/mL, ethyl acetate extract: 206.398 µg/mL, methanol extract: 97.453 µg/mL, while the EC50 using FRAP method from n-hexane extract: 67.851 µg/mL, ethyl acetate extract : 68.981 µg/mL, and methanol extract: 58.787 µg/mL. Column chromatography fractions have antioxidant activity, with FMetPF6 as the fraction with the best activity, with percent inhibition 41.85±1.96 at concentration 25 µg/mL (DPPH), and with percent antioxidant activity 26.03±0.84 at concentration 9 µg/mL (FRAP). Passiflora foetida leaves have great potential as an antioxidant; both the extract and its fractions have antioxidant activity. The FMetPF6 has the best activity compare to other extracts and fractions. Further analysis to determine the various compounds in FMetPF6 using LC-MS/MS will facilitate the active compound's isolation.