bluuebunny/crossref_metadata_2025_split huggingface dataset:
The synergistic relationship between experiential learning and safety culture in industrial engineering students during the pandemic
Authors: Cortés-Peña Omar Fernando , Pulcha-Honores Jesus Ricardo , Poma-Chávez Jonathan Julian , Villanueva-Blas Laura Fausta 
Published: August 2024

The objective of this research was to analyze how experiential learning is synergistically related to the development of a safety culture, under the special conditions of the COVID-19 pandemic in university students. The methodological approach was focused on a triangulated mixed design perspective, which allows integration of the qualitative and quantitative results derived from the educational experience of the pilot implementation of the model with a sample of students of the VII cycle of the Industrial Engineering program. The results obtained showed the relevance of the application of experiential learning to achieve the development of a safety culture in students. It was observed that active experimentation was the experiential learning factor that was most closely related to training in safety and skills. In this way, experiential learning through dynamism and experiential experiences manages to generate a safety culture. In conclusion, experiential learning manages to be an adequate strategy for the development of a culture of safety in students.
Keywords: Experiential learning; industrial engineering; pandemic; risks; safety culture.
Pemanfaatan Aplikasi dalam Jaringan pada Pembelajaran Jarak Jauh Mata Kuliah Tata Bahasa Mandarin
Authors: Andriani Susi , Prasetyaningtyas Hudiyekti , Anggrini Resma 
Published: August 2024

Abstrak: Pandemi Covid-19 telah menjadi katalisator perubahan model pembelajaran di seluruh dunia, tidak terkecuali di Program Studi Pendidikan Bahasa Mandarin (PSPBM) Fakultas Bahasa dan Seni Universitas Negeri Jakarta (FBS UNJ) yang juga berubah dari model pembelajaran konvensional (tatap muka) menjadi Pembelajaran jarak Jauh (PJJ) dalam jaringan (daring).Saat pendemi telah berakhir, kembali pada pembelajaran tatap muka di kelas mungkin akan berhadapan dengan masalah keterbatasan waktu dan tempat. Perkembangan teknologi saat ini dapat dipertimbangkan dan dimanfaatkan sebagai salah satu solusi, yaitu dengan mengembangkan model PJJ yang berbasis tekhnologi daring (PJJ daring). Dalam pengembangan PJJ daring, salah satu aspek yang harus diperhatikan adalah aspek pemanfaatan aplikasi daring yang digunakan dalam kegiatan pembelajaran. Artikel ini secara khusus akan memaparkan hasil penelitian tentang pemanfaatan aplikasi daring pada kegiatan PJJ daring di masa pandemi untuk Mata Kuliah (MK) Tata Bahasa Mandarin di PSPBM FBS UNJ. Penelitian ini adalah penelitian deskriptif kualitatif. Data diperoleh melalui wawancara terhadap dosen pengampu. Melalui penelitian ini, diperoleh informasi bahwa aplikasi daring yang digunakan adalah Whatsapp, Zoom, dan Google Classroom. Pemaparan terhadap pemanfaatan, pertimbangan pemilihan, dan pandangan dosen pengampu terhadap ketiga aplikasi ini diharapkan dapat menjadi bahan pertimbangan dan masukan bagi pihak-pihak yang akan atau sedang mengembangkan PJJ daring.
Model Perhitungan Tingkat Komponen Dalam Negeri (TKDN) Pengadaan Jasa Konstruksi Di Provinsi Bali
Authors: Bambang Wahyudi I Gede Bambang Wahyudi , Sudiasa I Wayan , Putra I Gusti Putu Adi Suartika , Yuni Ni Kadek Sri Ebtha , Yuliana Ni Putu Indah 
Published: August 2024

Penetapan nilai TKDN diatur pemerintah melalui kebijakan dan peraturan yang ditetapkan. Perhitungan umumnya dilakukan pada pengadaan barang dan jasa. Pengadaan konstruksi pemerintah mencakup beberapa komponen yang harus dihitung sebelum dilaksanakan proses tender yaitu RAB, spesifikasi teknis, metode pelaksanaan pekerjaan dan juga nilai TKDN. Penelitian ini akan dilaksanakan pada UKPBJ Provinsi Bali. Penelitian akan menggunakan metode deskriptif kuantitatif dan pengumpulan data dalam bentuk survey dan wawancara. Survey mengukur persentase nilai pada masing-masing variabel yang digunakan untuk menentukan nilai komponen dalam negeri jasa konstruksi. Wawancara mengetahui besaran nilai yang diterapkan pada masing-masing variabel. Wawancara dilakukan kepada Pejabat Pembuat Komitmen atau tim teknis. Analisis data menggunakan analisis modus melalui Microsoft Excel dengan memasukkan semua komponen yang dianalisis. Variabel yang digunakan untuk menghitung nilai komponen dalam negeri pekerjaan Pengadaan Jasa Konstruksi Pemerintah di Provinsi Bali adalah Analisa Harga Satuan Pekerjaan dan Nilai yang ditetapkan konsultan perencana. Model perhitungan komponen pekerjaan jasa konstruksi pemerintah Provinsi Bali setelah dianalisis menggunakan dasar analisis satuan pekerjaan dengan memperhitungkan Bahan, Material dan peralatan dengan minimal nilai komponen 40% dan Pekerja dengan 100% untuk warga lokal atau kewarganegaraan Indonesia dan Total keseluruhan nilai komponen pada pengadaan Jasa konstruksi di Provinsi Bali minimal TKDN dengan nilai 40%.
Sintesis dan Karakterisasi ZVI dari FeCl₂ dengan Polifenol dari Kulit Pisang Kepok (Musa paradisiaca normalis)
Authors: Hidayat Sahid , Budi Setia , Annisa Devy Nur 
Published: August 2024

Abstrak
Besi bervalensi nol (ZVI) telah berhasil disintesis dengan menggunakan reduktor alami polifenol dari ekstrak kulit pisang kepok. Kajian terhadap karakteristik ZVI hasil sintesis berupa ukuran, kristalinitas dan morfologi telah dilakukan dengan menggunakan spektrofotometer UV-Vis, particle size analyzer (PSA), X-ray difractometer (XRD), scanning electron microscope (SEM), dan fourier transform infra-red (FT-IR). Pengukuran konsentrasi Fe2+ yang bereaksi dengan polifenol divariasikan terhadap waktu, yaitu: 0 jam, 3 jam, 24 jam, 48 jam dan 144 jam. Konsentrasi Fe2+ yang bereaksi dengan polifenol terbesar terjadi ketika waktu reaksi 3 jam, yaitu 110465,22 ppm. Distribusi ukuran partikel ZVI hasil sintesis diamati dalam waktu reaksi 0,5 jam; 1 jam; 2 jam dan 3 jam. Waktu reaksi 1 jam menghasilkan distribusi ukuran partikel yang paling rendah, yaitu Dv 10 = 383,93 nm; Dv 50 = 537,17 nm; dan Dv 90 = 851,36 nm dengan polydispersity Index (PDI) sebesar 0,1240. Difrasi sinar-X menunjukkan ZVI hasil sintesis merupakan amorf yang terdiri dari fasa iron dan magnetite dengan presentase masing-masing berturut-turut 17,5 % dan 82,5%.
Kata kunci: aglomerasi, besi bervalensi nol (ZVI), reduksi garam besi
Abstract
Zero valent iron (ZVI) has been synthesized by using a natural reductant polyphenols extract from peel kepok banana. The study on the characteristics ZVI synthesized in the form of size, crystallinity and morphology has been carried out by using UV-Vis spectrophotometer, particle size analyzer (PSA), X-ray difractometer (XRD), scanning electron microscope (SEM), and fourier transform infra-red (FT-IR). Measurement of the concentration of Fe2+ which reacts with polyphenols varied with respect to time, ie: 0 hours, 3 hours, 24 hours, 48 hours and 144 hours. The concentration of Fe2+ which reacts with the largest polyphenols occur when reaction time of 3 hours, ie 110,465.22 ppm. ZVI particle size distribution of the results of the synthesis was observed within the reaction time of 0.5 hours; 1 hour; 2 hours and 3 hours. Reaction time of 1 hour to produce a particle size distribution of the lowest, ie Dv 10 = 383.93 nm; Dv 50 = 537.17 nm; and Dv 90 = 851.36 nm with a polydispersity index (PDI) of 0.1240. X-ray diffraction showed that synthesized ZVI is an amorphous phase consisting of iron and magnetite with the percentage of each respectively 17.5% and 82.5%.
Keywords: agglomeration, reduction of iron salt, zero valent iron (ZVI)
Sentiment Analysis of Public Opinion on Handling Stunting in Indonesia using Random Forest
Authors: Ningrum Ariska Fitriyana 
Published: August 2024

The issue of stunting is important to address, as it has the potential to affect the human resource potential and is related to health levels, and even child mortality. The Indonesian government targets to reduce the stunting rate to 14 percent by 2024 through an accelerated stunting reduction program as an effort to improve the nutritional status of the society and also reduce the prevalence of stunting or stunted children. Understanding public sentiment towards the stunting initiative is crucial for policymakers and stakeholders to design effective interventions and allocate resources efficiently. This study aims to analyze public sentiment related to stunting in Indonesia, which impacts children's growth and development. Through the use of sentiment analysis techniques, this study aims to understand public perceptions and attitudes towards the issue of stunting, evaluating whether the general sentiment is positive, negative or neutral. The results of this analysis are expected to provide useful insights for policymakers and health practitioners in designing and implementing more effective strategies to address the issue of stunting. This study conducted sentiment analysis from crawled Twitter data, showing positive and negative sentiments of the public regarding stunting handling in Indonesia. Furthermore, classification analysis using random forest was conducted and resulted in an accuracy score of 97.5%. The model is good enough but, we suggest trying other algorithms in further research.
Enantioconvergent Copper-Catalysed Difluoromethylation of Alkyl Halides
Authors: Liu Wei , Ding Decai , Yin Lingfeng , Poore Andrew , Ho Yeu-Shiuan , Cheng Yu-Ho , Hsieh Chi-Tien , Yachuw Stephen , Knieser Rachael , Krause Jeanette , Tian Shiliang , Cheng Mu-jeng 
Published: August 2024

Abstract

Stereochemical-controlled hydrogen bond donors play essential roles in the pharmaceutical industry. Consequently, organic molecules that bear difluoromethyl (CF2H) groups at chiral centers are emerging as pivotal components in pharmaceuticals due to their distinct hydrogenbonding property. However, a general approach for introducing CF2H groups in an enantioselective manner remained elusive. Here, we show that enantioconvergent difluoromethylation of racemic alkyl electrophiles, through alkyl radical intermediates, represents a new strategy for constructing CF2H-containing stereocenters. This strategy is enabled by using copper catalysts bound with a chiral diamine ligand bearing electron-deficient phenyl groups, and a nucleophilic difluoromethyl-zinc reagent. This method allows for the high-yield conversion of a diverse range of alkyl halides into their alkyl-CF2H analogs with excellent enantioselectivity (up to 99% e.e.). Mechanistic studies, supported by DFT calculations, revealed a route involving asymmetric difluoromethylation of alkyl radicals and crucial non-covalent interactions in the enantio-determining steps.
WITHDRAWN: Visualization of Görtler vortices in high–enthalpy plasma flow using planar laser-induced fluorescence
Authors: Yu Xin , Yuan Xun , Peng Jiangbo , Zeng Hui , Ou Dongbin , Yang Chaobo , Cao Zhen , Qi Jinhao 
Published: August 2024

Abstract

The full text of this preprint has been withdrawn by the authors due to author disagreement with the posting of the preprint. Therefore, the authors do not wish this work to be cited as a reference. Questions should be directed to the corresponding author.
The Generation of an ocular anti-inflammatory biotherapeutic to enhance wound healing.
Authors: Leger Anthony St. , Shane Jackie , Evans Matthew , Rigas Yannis , Shanks Robert 
Published: August 2024

Abstract

Microbes exist at and colonize mucosal surfaces striking a balance with the host immune system, so that these microbes can thrive on host tissues without causing pathology. Because of this, mucosal barrier-colonizing bacteria can be leveraged to act as long-term delivery vehicles for naturally derived therapeutics. Here, we use a mouse model of corneal wound healing to show that the eye-colonizing bacterium, Corynebacterium mastitidis (C. mast) can be engineered to produce and secrete bioactive murine anti-inflammatory interleukin (mIL)-10. Specifically, we used transposon mutagenesis to identify a native C. mast-specific secretion signal that was used to direct C. mast to secrete mIL-10. Mini-transposons were generated to deliver secretion capable mIL-10 to the bacterial genome. After screening, two isolates were identified that can: 1) colonize the eye, 2) produce and secrete mIL-10, and 3) enhance wound healing in an IL-10-dependent manner. This proof of concept illustrates that eye-colonizing bacteria can be engineered to deliver therapeutics to the ocular surface for the alleviation of ocular surface disease(s).
Isolation and characterization of multidrug-resistance bacterial pathogens from diarrhoeagenic stool in hospitals in Lokoja, Kogi State
Authors: Garba Daniel Edisha , Dibua Uju Marie-Esther , Attah Friday , Oka Chiamaka Ukamaka , Ozoadibe Yvonne Ogechukwu 
Published: August 2024

Abstract

Background: In Nigeria, diarrhoea is a leading cause of illness and death among children under five years of age due to unsafe water supplies, poor sanitation, and hygiene practices. It also contributes to a significant number of hospital admissions in Lokoja, the Confluence city of Kogi State. Traditional antibiotics used to treat these conditions have been frequently misused and consequently, there is widespread resistance among emerging diarrhoeagenic bacteria. This highlights the urgent need for more effective, readily available, non-toxic, and affordable natural products.
A total of 100 diarrhoeal stool samples were collected from children aged 0-5 years (0-60 months). These samples were examined and cultured on three different media: Eosin Methylene Blue agar, Cefixime-Tellurite Sorbitol MacConkey agar, and Salmonella-Shigella agar. Bacterial isolates were analyzed for growth, and pure cultures were subjected to Gram staining and a series of biochemical tests. Susceptibility and multidrug resistance tests were performed using the Kirby Bauer disk diffusion method.
Results: Out of the 100 analysed diarrhoeal stool samples, 65 (65%) tested positive for the following organisms: Escherichia coli 41 (30.15%), Salmonella species 25 (18.38%), Shigella species 22 (16.18%), Enterobacter aerogenes 21 (15.44%), Klebsiella pneumoniae 15 (11.03%), and Pseudomonas aeruginosa 12 (8.82%). These isolates exhibited a high level of multidrug resistance, with a resistance index ranging from 0.4 to 0.7, indicating that Lokoja is a high-risk area for these organisms.
Conclusions: Although diarrhoeal diseases can be caused by various agents, bacteria such as E. coli remain one of the primary and most significant pathogens affecting children in selected hospitals in the Lokoja metropolis. Ensuring access to safe drinking water is crucial in preventing these diseases, along with promoting good personal hygiene practices. It is also important to raise awareness about proper sanitation through basic health education programs, in order to reduce the burden of these diseases. Implementing comprehensive surveillance and monitoring systems to track the incidence and spread of diarrhoeal diseases in all communities is essential to effectively address this issue. Furthermore, the government should discourage the indiscriminate use of antibiotics and develop policies to combat this practice.
Demography, sanitation and previous disease prevalence associate with Covid-19 deaths across Indian states
Authors: Chatterjee Bithika , Mande Shekhar C. 
Published: August 2024

Abstract

Severity of Covid-19 diseases has been disproportionate with higher case-fatality ratio affecting developed nations. In India, states with higher income have reported a greater number of deaths compared to lower income states. The global burden of diseases India 2019 and the National Health Profile 2019 data was used to draw correlations with Covid-19 mortality at two different dates of peak Covid-19 cases in India. We explored correlation of mortality in different states of India with prevalence of different diseases, demography, development, sanitation etc. The study found a positive correlation with known demographic parameters such as percentage of elderly population (spearman correlation coefficient(rho) = 0.44 and 0.46 with 1st and 2nd peak respectively). Similarly, percentage urbanization was seen to correlate well with mortality (rho = 0.71 and 0.57) suggesting Covid-19 to be a predominantly urban disease. Prevalence of Autoimmune diseases, and Cancer show higher correlation with deaths. A surprising positive correlation emerged between improved sanitation parameters, such as closed drainage and indoor toilets, with COVID-19 deaths. Overall, the multivariate regression model achieved by combining demography, sanitation, autoimmune diseases and cancer gave us the best prediction for Covid-19 mortality (adjusted R square value of 0.71 with peak 1 and 0.85 with peak 2). Analysis of the Covid-19 related data seems to indicate that as the wealth of a state increases, the state’s urban landscape changes often leading to better sanitation facilities. The lifestyle and prevalence to autoimmune diseases as well as cancer also increases. However, this may affect the state’s ability to fight pandemics due to lower exposure to pathogens and immune training.
The examination of factors impacting spitting or vomiting among children under five years of age during seasonal malaria chemoprevention: A quantitative study in Burkina Faso, Chad, Nigeria and Togo
Authors: Gao Chen , Huang Sikai , Ibinaiye Taiwo , Sawadogo Benoît , Traore Adama , Compaoré Cheick Saïd , Awokou Fantche , Nnaji Chuks , Baker Kevin , Wang Duoquan , Richardson Sol 
Published: August 2024

Abstract

Background
Since 2012, the World Health Organization has recommended seasonal malaria chemoprevention (SMC) with sulfadoxine-pyrimethamine plus amodiaquine (SPAQ) for children aged 3–⁠59 months in areas with marked seasonality in malaria transmission. Full ingestion of SMC medicines without spitting or vomiting during a complete three-day course is critical to ensure SMC effectiveness and avoid increased antimalarial resistance. Although evidence suggests that spitting or vomiting is not rare, there is limited analytical evidence on potential factors associated with spitting or vomiting.
Methods
We utilized data from SMC coverage surveys conducted in Burkina Faso, Chad, Togo and Nigeria between 2020 and 2022. Episodes of spitting or vomiting were defined as children spitting out most of the dose or vomiting the entire dose within 30 min after administration on Day 1 by community distributors (CDs) as reported by primary caregivers. We conducted a cross-sectional study through mixed-effects logistic regression specified with socioeconomic variables, and caregiver knowledge of SMC, to identify factors associated with spitting or vomiting.
Results
The proportion of spitting or vomiting ranged from 1.81% in Nigeria to 4.36% in Chad. The odds of spitting or vomiting were lower if children were administered medicines under directly CD-supervised administration and primary caregivers had a high degree of knowledge of SMC. Spitting or vomiting were negatively associated with caregiver adherence to AQ administration and caregiver reporting of children’s adverse reactions to SMC medicines. Over half of the children did not receive a replacement dose from CDs who spit out or vomited most (or almost all) of the doses. Redosing was positively associated with caregiver educational attainment, caregiver knowledge of SMC, and directly supervised administration.
Conclusions
The direct CD-supervised administration of SPAQ can facilitate and strengthen community engagement strategies to enhance the appropriate administration and full ingestion of SMC medicines by the SMC delivery protocol.
Mucoepidermoid carcinoma of the base of tongue:A case report and literature review
Authors: Wang Peng , Liao Haiyan , Wang Feng , Wang Yufan , Yang Hongyu 
Published: August 2024

Abstract

Purpose
Mucoepidermoid carcinoma originates from reserve cells present in ducts of salivary glands and is the most common malignancy of the salivary glands, commonly found in the parotid gland, followed by the palatal and buccal mucous membranes. However, mucoepidermoid carcinoma occurrence in other intraoral sites, including the tongue base, is extremely rare.
Methods
A 33-year-old man presented with a progressively enlarging mass of the left tongue base. Contrast-enhanced computed tomography and magnetic resonance imaging revealed an enhancing ill-defined soft tissue mass in the left jaw region with cervical lymph node enlargement of unknown nature, without evidence of distant metastasis. Transoral needle biopsy from the mass revealed low-grade mucoepidermoid carcinoma pathologically. Complete transoral excision and cervical lymph node dissection were performed, following by tongue and mouth floor defects reconstruction with anterolateral thigh free flap. Examination of the obtained surgical specimen confirmed low-grade MEC with MAML2 gene fusion in the base of tongue. The tumor was removed with negative margins and cervical lymph nodes.
Results
The patient had an uneventful recovery and no evidence of recurrence or metastasis by 40 months of follow-up.
Conclusion
We present a rare case of mucoepidermoid carcinoma at the tongue base. Furthermore, we review related literature, and discuss its clinical features, histopathological characteristic, and treatment strategist.
Enhanced Thermal and Mechanical Properties of Boron-Modified Phenolic Resin Composites in a Multifiller System: Potential Applications in Aerospace Materials
Authors: Liu Yande , Jiang Dawei , Hessien Mahmoud M. , Mahmoud M. H.H. , Xu Miaojun , El-Bahy Zeinhom M. 
Published: August 2024

Abstract

The study investigated the properties of boron-modified phenolic resin (BPR) compositess reinforced with glass fiber (GF) and mica, SiO2 and glass powder (MSG). The BPR/MSG/GF composites exhibited improved mechanical strength, reduced shrinkage, and enhanced insulation properties at high temperatures. Thermogravimetric analysis showed enhanced thermal stability with a residue rate of 89.91% at 800 ℃. The addition of glass powder which is regarded as a fluxing agent, resulted in the densification of the ceramic layer. X-ray diffraction analysis (XRD) demonstrates that mica undergoes eutectic reaction with other fillers and glass powder to form the final ceramic layer. These findings have implications for the development of high-performance compositess with excellent heat resistance and mechanical strength. Further optimization of filler content and processing conditions can enhance the performance of these composites for specific applications.
Prolonged normothermic perfusion of the kidney – a historically controlled, phase 1 cohort study
Authors: Dumbill Richard , Knight Simon , Hunter James , Fallon John , Voyce Daniel , Barrett Jacob , Ellen Matthew , Conroy Elizabeth , Roberts Ian , James Tim , Allen Gabrielle , Brook Jennifer , Weissenbacher Annemarie , Ploeg Rutger , Coussios Constantin , Friend Peter 
Published: August 2024

Abstract

Kidney transplantation is the preferred treatment for end-stage renal disease and is limited by donor organ availability. Normothermic Machine Perfusion (NMP) might facilitate safe transplantation of marginal organs. Previous clinical implementations have been limited to short perfusions. NKP1 was a single centre, phase 1, 36-patient, three-stage cohort study investigating the safety and feasibility of up to 24 hours of renal NMP prior to transplantation. We observed a 30-day graft survival of 100%, with comparable outcomes to a matched control cohort (12-month estimated glomerular filtration rate (eGFR) 46.3 vs 49.5mL/min/1.73m2, p=0.44) despite much longer total preservation times (15.7 vs 8.9 hours controls, p <0.0001). We saw strong correlations between biomarkers measured ex-situ and post-transplant outcomes, including graft function at one year (correlation between GST-Pi delta and 12-month eGFR, R=0.54, p=0.001). Renal NMP is useful for optimising logistics and as an organ assessment technique, and has potential to expand the donor pool. Trial registration number: ISRCTN13292277.