bluuebunny/crossref_metadata_2025 huggingface dataset:
Fire resilience of a steel-concrete composite floor system :
Authors: Ramesh Selvarajah , Choe Lisa , Hoehler Matthew , Bundy Matthew , Bryant Rodney , Torres Giovanni
Published: September 2023

The National Fire Research Laboratory at the National Institute of Standards and Technology conducted a series of large compartment fire tests to investigate the behavior and fire-induced failure mechanisms of full-scale composite floor assemblies with a two-story steel gravity frame, two bays by three bays in plan. A total of three 9.1 m × 6.1 m composite floor specimens with varying slab reinforcement and fire protection schemes for the secondary beam were tested under combined mechanical loads and compartment fire exposure. This report presents the experimental design and results from the third composite floor fire experiment (Test #3). The first experiment (Test #1) was designed to achieve a 2-hour fire resistance rating per current U.S. practice and create baseline data for the behavior of the building. Test #1 specimen exhibited mid-panel slab integrity failure at 70 mins of fire exposure. Test #2 was conducted to study the effect of enhanced slab
reinforcement with larger area and ductility on the fire resilience of the composite floor systems. Test #2 showed that the use of enhanced slab reinforcement maintained the structural integrity of the tested slab for more than two hours. Test #3 was conducted to study the effect of enhanced slab reinforcement as well as unprotected secondary beams on the fire resilience of the composite floor systems. Similar to Test #2, the floor slab in the test bay was reinforced with 9.5 mm diameter deformed bars with a center-to-center spacing of 30 cm (230 mm2/m). Unlike in Test #1 and Test #2, the secondary beam and its end connections in the test bay were left unprotected in Test #3. The test floor was mechanically loaded to 2.7 kPa to mimic the code-prescribed gravity loads for fire conditions. The compartment test fire created upper-layer gas temperatures like those in standard fire resistance tests. A total of four natural gas burners distributed over the compartment floor
created a peak gas temperature exceeding 1100 °C below the test floor. A wide transverse crack with flame leak above the floor developed at 132 min in the mid-panel region. The mid-panel vertical displacement reached 535 mm (equivalent to the ratio of L/17 where the span length L = 9.1 m) It reached a peak value of 655 mm (L/14) at 140 min, when the actuator loading was removed. The Test #3 showed that the use of deformed steel bars (230 mm2/m) for the slab reinforcement maintained the structural integrity of the tested slab longer than the specified rating period with an unprotected secondary beam. The experimental results presented in this report can be used for validation of predictive models to perform parametric studies incorporating the variability in the steel reinforcement scheme (area, spacing, and material) for safer and cost-effective composite floor construction for fire safety.
Implementation of the Pancasila Student Profile Strengthening Project (P5) in Elementary School
Authors: Putri Yuriska Dewi Suwarno , Khaerunisah Anis , Astuti Dewi , Septiana Septiana , Alfiani Tina , Fakhiroh Zaqiyatul , Febrianti Almaida Ayunda
Published: September 2023

The learning process at SD Negeri Kebon Baru 1 has implemented an independent curriculum and Pancasila student profile. In realizing the Pancasila student profile, SD Negeri Kebon Baru 1 carried out the Strengthening of the Pancasila Student Profile Project (P5). In learning, the teacher explains the material with a predetermined theme. To produce a project, teachers and students can create products that match the theme that has been chosen. With the learning activities of Strengthening the Pancasila Student Profile Project (P5), it is hoped that it can develop creativity in accordance with the elements in the Strengthening of the Pancasila Student Profile Project (P5) dimension, one of which is in the creative dimension . This study aims to find out and describe how the implementation of the project to strengthen the profile of Pancasila students in SD Negeri Kebon Baru 1 Cirebon City. This research uses qualitative methods with a descriptive approach, collecting data through observations, interviews, and documentation. The subjects of this study were homeroom teachers and some grade 4 students. The data analysis technique used in this study is a qualitative descriptive method that is by looking for, collect, and organize systematically. The results of this study show that the implementation of the Pancasila student profile (P 5) strengthening the project in SD Negeri Kebon Baru 1 Cirebon City is very good because in P5 activities teachers have been very well prepared and planned activities. Teachers provide opportunities for students to develop students' creativity to produce a project. The theme taken in the P5 activity at SD Negeri Kebon Baru 1 is "Build Your Soul and Body", carried out every Saturday in grades 1 and 4. Related to the theme taken, the holding of habituation, namely P5 gymnastics before P5 learning activities in class. The stages that must be prepared so that even semester P5 activities can run smoothly are through three stages, such as the planning stage, the opening or inauguration of P5 activities, and the implementation stage
Project-Based Learning Assisted with Mind Mapping on Description Essay Writing Skills : A Study in Elementary School
Authors: Faturohmah Nanda Anisa , Irianto Apri , Rachmadtullah Reza
Published: September 2023

Writing essays with a descriptive structure is one of the basic competencies. A descriptive essay is a true depiction of objects or events so that the reader feels what the writer feels in the story. However, the level of students' ability to write descriptive essays is still low given the lack of understanding in writing descriptions so it is difficult to find ideas to translate into written form, and the choice of vocabulary is not quite right in constructing sentences. Therefore, this study aims to determine whether there is an influence of the project-based learning model assisted by mind mapping on students' descriptive essay writing skills. The method of this research is Quasi Experiment with a pretest-posttest control group design. Quasi experiment was conducted to determine the effect of a treatment on the subject under study. The research subjects were 50 students of class fourth-grade at Dukuh Menanggal I/424 Public Elementary School, Surabaya. Data analysis techniques using normality test, homogeneity test, and hypothesis testing. The results showed that there was an influence of the Mind Mapping-assisted Project Based Learning learning model on literacy skills in writing essay descriptions of grade IV students. In addition, with the help of Mind Mapping, can students learn motivation in writing descriptive essays because it helps focus students' minds in composing sentences into paragraphs.
Fisioterapia em indivíduos com Alzheimer: revisão de literatura
Authors:   Prof. Me. João Carlos Lopes Bezerra, Silva Antônia Mábia Zulina de Oliveira , Porto Izaiane de Oliveira Alves
Published: September 2023

A doença de Alzheimer (DA) em sua forma mais comum é considerada como uma demência neurodegenerativa de causa desconhecida, e acredita-se que tenha origem geneticamente determinada, sendo a forma mais comum de demência neurodegenerativa em pessoas idosas. Tem-se como objetivo revisar artigos científicos do Brasil sobre intervenções fisioterapêuticas em indivíduos com Alzheimer, afim de conhecer seus resultados e conclusões. A metodologia é caracterizada como revisão de literatura do tipo estado do conhecimento realizada na base de dados Oasisbr com a seguinte combinação de descritores: alzheimer and fisioterapia. Da busca retornaram 50 artigos que após a aplicação dos critérios de inclusão e exclusão restaram 8 artigos publicados de 2006 a 2022. Conclui-se que, os tratamentos fisioterápicos são fundamentais para o retardo da doença de Alzheimer e para qualidade de vida dos pacientes.
Diagnostic Accuracy of SARS-CoV-2 Rapid Antigen Test (Oral Fluid) with Unsupervised Self-sampling in the Omicron Period
Authors:   Zhejiang Gongshang University, China, Lei Zhang , Feng Yang , Junzhe Zhu
Published: September 2023

Background: To assess the performance of rapid antigen tests between unsupervised oral fluid self-sampling and nasal self-sampling during the omicron period. Objective: To diagnostically validate SARS-CoV-2 Rapid Antigen Test (Oral Fluid) by comparing results with those of nasal self-sampling in the omicron period. Method: Run rapid in vitro diagnostic tests for detection of antigen to SARS-CoV-2 in nasal and oral fluid sampling, compared to a leading commercial test using clinical specimens for validation of performance. Result: When nasal self-sampling compared with nasal self-sampling, sensitivities were found to be slightly higher in confirmatory testers. Sensitivity (94.3%): In total 297 PCR in the Clinitest group were confirmatory testers (previously tested positive by a self-test at own initiative), 280 PCR confirmed positive samples were correctly detected by SARS-CoV-2 (COVID-19) Rapid Test (Oral Fluid). 17 false negative cases were reported. Specificity (99.4%): In total 350 PCR confirmed negative samples were correctly detected by SARS-CoV-2 (COVID-19) Rapid Test (Oral Fluid). Only 2 false positive cases were reported.Accuracy (97.1%): In total 649 PCR confirmed samples: 630 PCR confirmed samples were correctly detected by SARS-CoV-2 (COVID-19) Rapid Test (Oral Fluid). Among which, overall sensitivities with nasal self-sampling were 79.0% (95% confidence interval 74.7% to 82.8%) for SARS-CoV-2 by Rapid Antigen Tests on Saliva. Sensitivities were substantially higher in confirmatory testers with Citest SARS-CoV-2 Rapid Antigen Test (Oral Fluid) than in those who tested for other reasons.Conclusion: Sensitivities of three rapid antigen tests with nasal self-sampling decreased during the emergence of omicron but was only statistically significant for Clinitest. Sensitivities appeared to be substantially influenced by the proportion of confirmatory testers. Sensitivities of Citest SARS-CoV-2 Rapid Antigen Test improved after the addition of Oral Fluid self-sampling. A positive self-test result justifies prompt self-isolation without the need for confirmatory testing. Individuals with a negative self-test result should adhere to general preventive measures because a false negative result cannot be ruled out.
Evaluation of the Performance Characteristics for SARS-CoV-2 S-RBD IgG Antibody Rapid Test Cassette (Fingerstick Whole Blood) by Comparing CLIA Test
Authors:   Zhejiang Gongshang University, China, Lei Zhang , Feng Yang , Junzhe Zhu
Published: September 2023

Background: SARS-CoV-2, a branch of coronavirus, is a positive-strand RNA virus with four major proteins and several auxiliary proteins wrapped with genetic material. It mediates the invasion of the virus mainly through the binding of the S protein to host cell receptors and determines the organization of virus and host tropism. Human coronaviruses are one of the fastest-developing viruses due to their high genomic nucleotide substitution rate and recombination ability. Human coronaviruses are associated with a variety of respiratory diseases of varying severity, such as colds, pneumonia, and bronchitis. On January 30 2020, the World Health Organization (WHO) declared that the COVID-19 outbreak caused by SARS-CoV2 constituted a public health emergency of international concern (PHEIC) and characterized as a pandemic on March 11 2020. In an effort to expedite the availability of in vitro diagnostics (IVDs) needed in public health emergencies, the WHO has opened the development of an emergency use checklist process, which aims to assist procurement agencies and Member States in deciding whether a specific IVD is suitable for use based on a minimum set of available quality, safety and performance data. IVDs with guaranteed quality, safety and performance are a key component of the overall strategy to control the pandemic.Objective: The main purpose of this evaluation report is to investigate the sensitivity of the SARS-CoV-2 S-RBD IgG Antibody Rapid Test (Fingerstick Whole Blood) for diagnosis during COVID-19. Method: The SARS-CoV-2 S-RBD IgG Antibody Rapid Test (Fingerstick Whole Blood) is a rapid chromatographic immunoassay intended for the qualitative detection of IgG antibodies to SARS-CoV-2 spike (S) protein receptor binding domain (RBD) in human fingerstick whole blood approximately 10 days after vaccination. Result: Through the clinical evaluation of vaccinated, unvaccinated, and virus-uninfected populations, the results show that the overall relative sensitivity of SARS-CoV-2 S-RBD IgG Antibody Rapid Test (Fingerstick Whole Blood) is 97.7%, the relative specificity is 99.0%, and the relative accuracy is 98.5%. Conclusion: CITEST SARS-CoV-2 S-RBD IgG Antibody Rapid Test (Fingerstick Whole Blood) is a rapid test that is a qualitative membrane-based immunoassay intended to detect IgG antibodies to SARS-CoV-2 spike (S) protein receptor binding domain (RBD) in fingerstick whole blood. The product is simple to operate and has been validated against an industry leading commercial CLIA test to give results within 10 minutes of the sample being tested. A comparison of 1257 samples showed an accuracy of 98.5% and an excellent sensitivity of 97.7%. People can use the test kits to get accurate results and determine if they have antibodies in their bodies after they have been vaccinated.
Insights into Compatibilization of Poly(ε-caprolactone)-based Biocomposites with Diisocyanates as Modifiers of Cellulose Fillers
Authors:   Department of Polymer Technology, Gdańsk University of Technology Narutowicza 11/12, 80-233 Gdańsk, Poland, Hejna Aleksander , Kosmela Paulina ,   Department of Polymer Technology, Gdańsk University of Technology Narutowicza 11/12, 80-233 Gdańsk, Poland
Published: September 2023

This study aimed to analyze the impact of cellulose fillers’ modification with diisocyanates on the performance of composites based on the poly(ε-caprolactone) (PCL) matrix. Four most commonly used diisocyantes (isophorone, hexamethylene, toluene, and methylene diphenyl) were applied as modifiers of cellulose fillers (5 and 15 wt% per mass of filler). Modified fillers were introduced in the amount of 30 wt% into the PCL matrix. Chemical structure, thermal, static and dynamic mechanical properties of composites were investigated using Fourier transform infrared spectroscopy, differential scanning calorimetry, tensile, hardness and rebound resilience tests, and dynamic mechanical analysis, respectively. Modifications of cellulosic fillers resulted in the decrease of matrix crystallinity and enhancement of interfacial interactions, causing even a two-fold increase of tensile strength and a 25% rise of modulus. These results indicate that through proper adjustment of type and content of diisocyanate modifier, composites’ properties may be engineered.
Enhancing Graft-Take Success in Jackfruit (Artocarpus heterophyllus Lam.) Var. “EVIARC Sweet” Seedlings by Pre-Grafting Treatments
Authors:   College of Agriculture and Fisheries, Capiz State University – Pontevedra Pontevedra, Capiz 5802 Philippines, Basalo Jasper A. , Lina Dario P. ,   College of Agriculture and Food Science, Visayas State University Baybay City, 6521 Philippines
Published: September 2023

The effects of different pre-grafting treatments in enhancing graft-take success in jackfruit seedlings were evaluated. This study aimed to assess the effects of wounding in reducing latex in rootstock and the effects of cold temperature and flowing water as scion pre-grafting treatments. The study was laid out in 2 x 3 factorial experiment arranged in randomized complete block design (RCBD) with three replications. The treatments were composed of different rootstock and scion pre-grafting treatments. Days from grafting to shoot and leaf emergence, percent graft-take, number of leaves, average numbers of shoots per grafted seedling, moisture content of the medium, chemical properties of the scion, chemical properties of the potting medium and agroclimatic data were gathered and subjected to analysis of variance for RCBD. The results revealed that the highest percent graft-take (55%) was obtained from unwounded rootstocks grafted with pre-cured scions with flowing water treatment. Lowest percent graft-take (38.33%) was achieved by wounded rootstocks grafted with pre-cured scions under cold temperature treatment. Pre-cured scions without pregrafting treatment and pre-cured scion with flowing water,regardless of the rootstocks used,revealed the lowest number of days to shoot and leaf emergence. On the contrary, pre-cured scions subjected to cold temperature showed the highest number of days for the shoot and leaf to emerge. Moreover, pre-cured scion with flowing water gave significantly the highest number of shoots and leaves, while pre-cured scions without pre-grafting and cold temperature treatment showed the lowest number of shoots and leaves.
Green Synthesis of Silicon Carbide from Sugarcane Bagasse through Magnesiothermic Reduction: A Potential Biomaterial for Photovoltaic Solar Cell
Authors:   Department of Chemistry, Central Luzon State University, Science City of Muñoz, Nueva Ecija 3120 Philippines, Cardozo Aurelio L. , Monserate Juvy J. ,   Department of Chemistry, Nanotechnology R&D Facility, Central Luzon State University, Science City of Muñoz, Nueva Ecija 3120 Philippines, Salazar Joel R. ,   Department of Chemistry, Central Luzon State University, Science City of Muñoz, Nueva Ecija 3120 Philippines, Eugenio Paul Jhon G. ,   Department of Chemistry, Central Luzon State University, Science City of Muñoz, Nueva Ecija 3120 Philippines, Sarong Marilou M. ,   Nanotechnology R&D Facility, Central Luzon State University, Science City of Muñoz, Nueva Ecija 3120 Philippines
Published: September 2023

Sugarcane bagasse is the most abundant agricultural waste in terms of tonnage in the Philippines. This biomass can be converted into silicon carbide (SiC) – an important material for photovoltaic (PV) cells. SiC was prepared at 600 °C for 4 hours with the use of magnesium powder as a catalyst and it was further enhanced by doping through the solvothermal method. The successfully synthesized SiC appeared grayish in color having an average yield of 8.56%. The SiC was doped with varying amounts of urea (0.1, 1.0, 2.0, and 3.0, 0.02 M), an n-type dopant, and carried out in triplicate basis. Incorporation of n-type dopants increased its capability to be a good built-in voltage and absorbent of light. Effective band-gap energies of semiconductor material for the PV cells were in the range of 1.0-1.7 eV. Urea-doped SiC exhibited a higher wavelength compared with undoped SiC, which could imply their differences in bandgap. The conductance testing showed that electrical conductivity established a positive relationship with dopant concentrations. Appeared to be crystalline in nature, the surface morphology of doped and undoped SiC was determined through scanning electron microscope. The X-ray diffraction patterns confirmed the crystallinity of the synthesized material. The elemental analysis and vibrational frequencies through energy dispersive X-ray and Fourier transform infrared analyses proved the presence of silicon and carbon in the material. Therefore, sugarcane bagasse can be processed chemically to generate new products for solar cell applications employing simple and low-cost method.
Mitodepressive and Genotoxic Potential of Crude Body Wall and Cuvierian Tubule Extracts of Mani-mani (Pearsonothuria graeffei Semper) on Root Meristems of Onion (Allium cepa L.)
Authors:   College of Arts and Sciences, College of Graduate Studies, Don Mariano Marcos Memorial State University, Agoo, La Union 2504 Philippines, Torres John Raymund D. , Malaya Victoria N. ,   College of Graduate Studies, College of Fisheries, Don Mariano Marcos Memorial State University, Agoo, La Union 2504 Philippines
Published: September 2023

The need to discover novel natural products has resulted in several explorations in the marine environment. The biological compounds from aquatic resources can boost effort on drug development and may promote species conservation. In this study, the mitodepressive and genotoxic properties of the extracts obtained from Pearsonothuria graeffei – a widely distributed and poorly explored sea cucumber species – were evaluated using the Allium test. The sea cucumber body wall and cuvierian tubule crude methanol, ethyl acetate and n-hexane extracts were found to have potential genotoxic properties at concentrations of 500, 1,000 and 1,500 μg mL-1. A significant (p < 0.05) growth inhibition in both length and the number of roots was exhibited at higher concentrations (1,000 and 1,500 μg mL-1) of the crude extracts similar to the control mutagen. The 1,000 μg mL-1 of cuvierian tubule methanol extract resulted in higher general toxicity in terms of root length inhibition than the control mutagen. A significantly lower mitotic index was exhibited in the crude body wall methanol extract at 500 μg mL-1 concentration. Also, a higher percent chromosomal aberration (p < 0.05) was observed in onions treated with all concentrations of crude body wall ethyl acetate and n-hexane extracts, and 500 μg mL-1 of the crude cuvierian tubule methanol and n-hexane extracts. In conclusion, the crude extracts of P. graeffei have mitodepressive and genotoxic properties, which are potential sources of bioactive compounds necessary for the development of treatment for some serious human diseases like cancer.
Large-Scale Prototype Testing of a Composite Geosynthetics Reinforced Earth Structure for Riverbank Slope Protection Using Fine Grained Sandy Soil
Authors:   College of Engineering and Technology, Mindanao State University – Iligan Institute of Technology Iligan City, 9200 Philippines, Circulado Ulmen Riff L. , Lorenzo Glen A. ,   Civil Engineering Department, Mindanao State University – Marawi Marawi City, 9700 Philippines
Published: September 2023

This paper presents the field evaluation of large scale prototypes of an innovative composite geosynthetic reinforced earth (CGRE) structure as an alternative for the conventional earth retaining structures, hence a green engineering design for riverbank slope protection. This reinforced earth structure comprises of a geogrid that serves as the main reinforcement and the cover of the facing member of the structure; and a geotextile as separator medium between the infill soil and intermediate horizontal gravel drainage. Three large scale prototypes at full, half, and no gravel drainage were built, monitored, and tested. Clayey sand soil was the fill material used and a 3/2” to 2” sub-rounded gravel was used for the drainage and facing members. CGRE prototypes were evaluated in saturated conditions, and tested under incremental surcharge loadings with a total applied stress of 40 kPa. Lateral displacements for every layer of the structure were determined using horizontal rods where readings were taken from line gauges. Results showed that prototypes with gravel drainage displaced lower than the permissible limit of 4.0%. The CGRE prototype with full gravel drainage had the smallest average total lateral displacement of 1.28%. Hence, it had a higher interface friction resistance, and pull-out capacity than the one with less or no gravel drainage. Overall, the incorporation of gravel drainage improved the performance of the reinforced earth system by reducing the lateral movements of the structure. Therefore, the CGRE structure is a viable slope protection alternative even under saturated conditions.
Laboratory Pullout Test of Geogrid Reinforcements for Submerged Mechanically Stabilized Earth for Waterfront Applications
Authors:   College of Engineering and Technology, Mindanao State University – Iligan Institute of Technology, Iligan City, 9200 Philippines | Qualitest Solutions & Technologies Inc. (QSTI), Davao City, 8000 Philippines, Botuyan Allan E. , Lorenzo Glen A. ,   Civil Engineering Department, Mindanao State University – Marawi, Marawi City, 9700 Philippines
Published: September 2023

The design and evaluation of mechanically stabilized earth (MSE) wall structures for riverbank protection, quays, sea walls and other waterfront structures is critically dependent on a design parameter called the interaction coefficient (Ci) for submerged or fully saturated condition. However, the available research works conducted in this field are limited to non-submerged and, at most, partially saturated condition. This limitation does not closely represent actual conditions where waterfront structures are almost often submerged and fully saturated. Hence, the objective of this study was to determine the Ci in a submerged condition, on top of the Ci in a non-submerged condition for different types of geogrid reinforcement for fine-grained soils and coarsegrained soils used for MSE walls. Test results revealed that the Ci decreased as the effective overburden stress increased. The submerged conditions yielded lower Ci compared with non-submerged conditions, and the reduction wassignificant at a lower effective overburden stress for high density polyethylene uniaxial geogrid than the polyvinyl coated polyester yarn. The design parameters derived from these conditions can be used for the evaluation and design of MSE walls for waterfront applications with a higher level of confidence.
Ensemble Predictive Model for Academic Churn Risk Using Plurality Voting
Authors:   School of Computer Studies, University of San Jose - Recoletos, Cebu City, 6000 Philippines, Cuizon Jovelyn C.
Published: September 2023

Academic churn analysis involves identifying students who are most likely to discontinue schooling. Although churn is an unavoidable phenomenon, timely detection and early intervention have been proven to be effective retention mechanisms. The study aimed to develop a model that predicts the likelihood of students to churn to provide insights to school administrators to initiate activities to prevent student attrition. This study examined academic, demographic and psychological data of students admitted as freshmen from 2005 to 2010 in two programs (Bachelor of Science in Information Technology [BSIT] and Bachelor of Science in Computer Systems [BSCS]) of the University of San Jose-Recoletos, Cebu City, Philippines. The psychological data representing the personality traits of students were gathered through Manchester Personality Questionnaire (MPQ). This study applied the ensemble method in machine learning to create a predictive model to define profiles for churners and non-churners. The predictive model was created by bagging three different classification models, namely support vector machine (SVM), random forest (RF) and k-Nearest Neighbor (k-NN) via plurality voting. The performance of the model was verified through 10-fold cross-validation with an overall accuracy of 78%. The model will be integrated into the college student advising system to provide notifications to administrators on students who need intervention on their subsequent enrollment.
Effect of Ferrochrome Addition on Wear and Hardness Properties of Grey Cast Iron
Authors:   Materials and Metallurgical Engineering Department, University of Ilorin, Ilorin, Nigeria, Busari Yusuf O. , Adebisi Jeleel A. ,   Materials and Metallurgical Engineering Department, University of Ilorin, Ilorin, Nigeria, Shuaib-Babata Yusuf L. ,   Materials and Metallurgical Engineering Department, University of Ilorin, Ilorin, Nigeria, Amuzat Lukman O. ,   Materials and Metallurgical Engineering Department, University of Ilorin, Ilorin, Nigeria, Babamale Halimah F. ,   Industrial Chemistry Department, University of Ilorin, Ilorin, Nigeria
Published: September 2023

The use of a pair of grinding discs in a domestic milling machine for food processing is commonly practiced in sub-Saharan Africa. During the milling machine operation, the pair of grinding discs wears off gradually by shear and produces metallic particles that contaminate the processed food. This study aimed to reduce these metallic impurities by adding chromium (Cr) to the melt in producing discs to increase the discs’ toughness and wear resistance. Cr in the form of ferrochrome (FeCr) was added in weight percentage of grey cast iron to produce alloyed specimens. The control specimen was produced from 40% grinding disc and 60% engine block scraps. Four other experimental specimens were added with FeCr to increase the amount of Cr in subsequent castings. The specimens were prepared and subjected to compositional, phase and microstructural analyses, and hardness and wear resistance tests. The results showed that percentage variations of FeCr in the casts had significant effects on the properties investigated. The addition of FeCr to the melt increased the wt.% amount of Cr and intensity of the phases in X-ray diffractometer patterns for the alloyed cast irons. An increase in the amount of Cr led to an increase in hardness and a reduction in wear rate. Consequently, about 67% reduction wear rate index with moderate hardness was observed in the alloyed casts than the control sample. Thus, the addition of FeCr produced alloyed specimens that would lessen the number of metallic contaminants and frequency of regrooving the grinding discs.
Design and Finite Element Analysis of Flour Packaging Machine for Plantain Processing Plant
Authors:   Industrial and Production Engineering Department, Mechanical Engineering Department, Federal University of Technology, Akure, Ondo, Nigeria, Olutomilola Emmanuel O. , Ayodeji Sesan P. ,   Industrial and Production Engineering Department, Mechanical Engineering Department, Federal University of Technology, Akure, Ondo, Nigeria, Adeyeri Michael K. ,   Industrial and Production Engineering Department, Mechanical Engineering Department, Federal University of Technology, Akure, Ondo, Nigeria
Published: September 2023

Plantain, the fourth most important crop, is crucial to food security and livelihoods of many people in Nigeria – the fifth leading plantain producer in the world. The demand for plantain flour is rapidly increasing due to its health benefits and industrial applications; hence, the need for more machines. However, importing flour-packaging machines is found to be not cost-effective. Thus, it is necessary to locally develop a flour packaging machine for a plantain flour production and packaging plant. For this reason, this paper aimed to present the design and finite element analysis of a flour packaging machine. The model was developed and after careful selection of suitable materials and design analysis, its functionality, structural integrity and design adequacy for fabrication were evaluated using SolidWorks 2016. The highest induced-stress and the lowest factor of safety values were obtained from the simulation of the machine’s frame, which is made of mild steel. As evidenced by the simulation results, it was revealed that the machine will be able to serve its intended purpose. However, care must be taken to reinforce the locations with the highest induced-stress values on the machine, before or during fabrication, for optimum reliability.
Concrete Hollow Block Production Using Fine Aggregates of Polyvinyl Chloride and Polystyrene
Authors:   Senior High School Department, FEU Cavite, Silang, Cavite 4118 Philippines | University Research Office, De La Salle University – Dasmariñas, City of Dasmariñas, 4114 Philippines, Rodriguez Jr. Roberto L. , Ching Johnny A. ,   University Research Office, De La Salle University – Dasmariñas, City of Dasmariñas, 4114 Philippines
Published: September 2023

Population concurrently grows with demand for food and infrastructure, which are associated with plastic waste mismanagement and concrete hollow block (CHB) consumption, respectively. However, there is a dearth in the utilization of plastic pellets using polyvinyl chloride (PVC) and polystyrene (PS) in CHBs. Hence, this study aimed to characterize PVC and PS pellets, and evaluate and compare their potentials when incorporated as fine aggregates in CHBs in terms of workability and compressive strength. The pellets were characterized and used as a substitute to sand resulting in four batches of CHB specimen with 0, 10, 20, and 30% by volume of each pellet. Results revealed that PVC absorbed more and sank in the water while PS absorbed less and floated in water. The workability of both experimental groups increased as the substitution of pellets was increased. The compressive strengths of the PVC group dropped linearly with increasing pellet substitution and less than the minimum acceptable value. The batch with 30% PS pellets resulted in the highest compressive strength of 3.66 MPa among the experimental groups and greater than the minimum acceptable value of 3.45 MPa. Results implied that the incorporation of PS pellets in CHBs can be a promising solution to the plastic waste mismanagement and demand for stronger CHBs.
Site-Specific Response Spectra: 2nd District of Cagayan de Oro City, Philippines
Authors:   College of Engineering and Technology, Mindanao State University – Iligan Institute of Technology Iligan City, 9200 Philippines, Baguhin Israel A. , Orejudos Jerson N. ,   College of Engineering and Technology, Mindanao State University – Iligan Institute of Technology Iligan City, 9200 Philippines
Published: September 2023

Building codes are updated advertently to address the catastrophic effect of earthquakes. One way of mitigating it is the development of a site-specific response spectrum. In the Philippines, the National Structural Code of the Philippines (NPSC) is the recognized National Building Code adopting the 1997 Uniform Building Code (UBC). The NSCP uses the 10% probability of exceedance in a 50-year period with a return period of 475 years. In this study, site-specific response spectra were developed in the 2nd District of Cagayan de Oro City using a 300-km radius, with coordinates of 8.235° (latitude) and 124.024° (longitude) as the center point of the study area, using the same probability of exceedance in a 50-year period. Historical earthquake catalogs were gathered from the United States Geological Survey and the Department of Science and Technology – Philippine Institute of Volcanology and Seismology. Local soil condition was assimilated in the study to take into account the soil response. Finally, site-specific response spectra were developed using the probabilistic seismic hazard analysis where substantial results are achieved, i.e., the UBC 1997 design response spectrum is remarkably high in spectral acceleration values at 0.01, 0.20, 1.0, 2.0, 3.0, 4.0 and 5.0 s at 0.44, 1.1, 1.1, 0.7, 0.36, 0.26 and 0.20 g compared to the maximum site-specific response spectra of the study area of the same period at 0.39, 0.92, 0.23, 0.10, 0.07, 0.05 and 0.04 g spectral accelerations, respectively.
Rethinking Energy: Germany’s Path to ‘Freedom Energy’ by 2030
Authors: Seba Tony , Arbib James , Dorr Adam , Ahmed Nafeez
Published: September 2023

Germany is facing an unprecedented energy supply crisis as it rethinks dependence on Russian oil and gas imports. But this crisis also poses a unique opportunity. Within the next decade, Germany can lead the world by creating a fully self-sufficient zero cost clean energy system for less than the country’s current annual fossil fuel spending, laying the foundations for a bold new era of long-term energy security and economic prosperity unlike anything seen before. The key to meeting the current challenge is to fully understand technology disruption, its geopolitical implications and its race-to-the-top consequences.
Rethinking Energy: The Great Stranding: How Inaccurate Mainstream LCOE Estimates are Creating a Trillion-Dollar Bubble in Conventional Energy Assets
Authors: Dorr Adam , Seba Tony
Published: September 2023

We are on the cusp of the fastest, deepest, most profound disruption of the energy sector in over a century. Like most disruptions, this one is being driven by the convergence of several key technologies whose costs and capabilities have been improving on consistent and predictable trajectories – namely, solar photovoltaic power, wind power, and lithium-ion battery energy storage. Our analysis shows that 100% clean electricity from the combination of solar, wind, and batteries (SWB) is both physically possible and economically affordable across the entire continental United States as well as the overwhelming majority of other populated regions of the world by 2030. Adoption of SWB is growing exponentially worldwide and disruption is now inevitable because by 2030 they will offer the cheapest electricity option for most regions. Coal, gas, and nuclear power assets will become stranded during the 2020s, and no new investment in these technologies is rational from this point forward.
风景园林施工中大树移植技术及养护措施研究
Authors: 王 继范 , 魏 星 , 高 祯
Published: September 2023

风景园林项目在生态环境发展中有重要的意义，可以保护生态环境，优化空气质量，在风景园林项目施工期间，大树的移植是一个比较重要的施工环节，然而因为大树的生长周期比较长且在移植以后难以存活，移植会影响大树的成活率，由此可见，正确的移植技术以及养护技术有重要的意义。
BIM 技术在建筑施工管理中的运用
Authors: 邵 盼
Published: September 2023

在社会经济快速发展的背景下，我国建筑行业日渐繁荣。相对于其他行业，建筑工程施工更为复杂，危险系数更高，是国内最容易出现安全问题的行业之一。将 BIM 技术应用到建筑工程施工中，不仅可以有效地解决建筑工程施工过程中存在的安全问题，还可以提高施工效率，降低施工成本。文章首先介绍了建筑施工安全管理现状，然后分析了 BIM技术在建筑工程施工安全管理中的运用措施，以期为建筑工程项目安全管理提供一定的参考。
水泥搅拌桩施工技术在市政道路软基处理中的应用
Authors: 陈 智国
Published: September 2023

水泥搅拌桩法是我国目前解决道路软基问题的一种重要途径，而且取得了非常不错的应用效果。为了实现最佳的搅拌效果，提高路基加固质量，我们需要对这一施工技术的作用机理和表现特征进行详细了解，并充分结合道路工程软基实际情况和周边环境等诸多因素，合理选择施工材料和机械设备，确保达成水泥搅拌桩施工预期目标。鉴于此，本文首先对水泥搅拌桩进行了简要概述，然后分析了该项技术的应用优势，最后详细论述其在市政道路软基处理中的具体应用。
环保工程污水处理的有效措施研究
Authors: 白 梅
Published: September 2023

当前人们生活水平虽然得到了提高，但与此同时，水资源污染现象演变的越来越严峻，威胁了人们的生命健康。对于环保工程而言需要做好污水处理，从不同的角度出发，合理选择污水处理技术，提高污水处理有效性。鉴于此，本文则从不同的角度出发，针对性的探究了环保工程的污水处理思路与方法，以此有效缓解水污染的加剧。
如何优化建筑施工管理以提高建筑工程质量
Authors: 晁 美红
Published: September 2023

建筑工程的施工周期比较长，施工内容比较多，工种复杂，施工人员较多。大部分建筑工程都在露天的环境中作业，高空作业较多，施工过程中会受到多种因素的影响，建筑工程施工安全和施工质量会受到诸多不良影响。所以，施工企业需要加强建筑工程施工管理中的施工质量控制，确保建筑工程的施工安全，同时保障建筑工程的施工质量，建筑工程的安全生产，提升整体的施工质量，保障整个建筑工程的高效、高质发展。
基于数值仿真的寒冷地区居住建筑能耗影响因素研究
Authors: 鞠 晓磊 , 庞 鲁新
Published: September 2023

本文以寒冷地区某居住建筑为例，基于现行国家及地方标准对节能指标的要求，使用 Design Builder 数值仿真模拟软件，模拟研究建筑能耗随各因素变化的趋势，并给出设计指标推荐值。
建筑工程管理的现状分析及控制措施
Authors: 王 启浩 , 高 海忠
Published: September 2023

目前，建筑施工管理与工程施工质量之间的联系较为紧密，建筑施工管理是保障建筑工程质量的重要前提，建筑施工质量又是建筑施工管理价值的重要体现，两者之间的关系是相辅相成、密不可分的。建筑行业具有较高的危险性，在施工中保证建筑施工质量的安全性，是必然要求。建筑行业在取得自身成就的同时，要想解决好发展中存在的问题，必须要将施工中质量与管理问题协调好，不断满足人们对于建筑物的使用与居住需求，让建筑行业更好地发展下去。
建筑工程造价超预算的原因与控制措施
Authors: 张 晓旭 , 李 鹏
Published: September 2023

工程造价管控是建筑工程施工企业工作的重要内容，其能够有效控制工程施工成本，能够帮助企业获取更多的利润，提高资金的利用效率，避免资金的浪费，在建筑行业长久健康发展方面发挥着不容忽视的作用。新形势下，建筑企业应充分认识到工程造价管控的意义及作用，明确建筑工程造价管控中存在的问题，提高工程造价管控的水平，以此降低建筑工程造价，扩大建筑企业在行业中的竞争优势，为建筑行业的长久稳定发展做好铺垫。
不同卒中分型急性基底动脉闭塞机械取栓临床研究
Authors: 王 焕松
Published: September 2023

目的：研究不同卒中分型急性基底动脉闭塞（BAO）患者机械取栓的可行性及临床效果。方法：选取2020年5月至2022年5月前往我院进行机械取栓方式治疗的急性基底动脉闭塞患者30例。上述患者全部使用 Solitaire AB 型支架进行血管内机械取栓，治疗一段时间后，分析急性基底动脉闭塞患者血管再通情况、相关并发症发生情况、预后良好情况。这30例缺血性卒中患者中15例（15/30，50.00%）为大动脉粥样硬化性卒中患者，13例（13/30，43.33%）为心源性栓塞卒中患者，1例（1/30，3.33%）为腔隙性梗死卒中患者，1例（1/30，3.33%）为原因未明的卒中患者。结果：经过术后护理，其中27例（27/30，90.00%）卒中患者血管再通，含大动脉粥样硬化性卒中患者13例（13/15，86.67%）、心源性栓塞卒中患者12例（12/13，92.31%）、腔隙性梗死卒中患者1例（1/1，100.00%）、原因未明的卒中患者（1/1，100.00%）；术后90天，统计改良 Rankin量表（mRS）中评分，其中11例（11/30，36.67%）患者预后良好，含大动脉粥样硬化性卒中患者5例（5/15，33.33%）、心源性栓塞卒中患者4例（4/13，30.77%）、腔隙性梗死卒中患者1例（1/1，100.00%）、原因未明的卒中患者（1/1，100.00%）。结论：急性基底动脉闭塞患者采用血管内机械取栓的治疗方式能够帮助患者解决血栓堵塞血管的问题，恢复血流供应，具有一定的临床研究价值。
肠内营养支持对颅脑外伤患者康复的影响
Authors: 佟 雪娇
Published: September 2023

 目的：探讨通过实施肠内营养支持颅脑外伤患者的康复效果。方法：自2021年5月至2022年5月，选取于我院接受 颅脑外伤治疗的患者50例，根据患者接受治疗的先后顺序将上述患者进行编号。将前25名患者安排于对照组，进行 肠外营养支持，将后25名患者安排于研究组，进行肠内营养支持。经过一定治疗周期，比较两组并发症发生率、外周 血淋巴细胞总数、白蛋白总量、血糖含量等指标。结果：研究组中的患者并发症发生率为4.00%，明显低于对照组中 的患者并发症发生率32.00%，二者之间差异符合统计学原理（P＜0.05）；研究组中的患者14天外周血淋巴细胞总 数为（1.44±0.41）×109/L，优于对照组中的患者外周血淋巴细胞总数（1.82±0.37）×109/L，二者之间差异符合 统计学原理（P＜0.05）；研究组中的患者14天白蛋白总量为（28.34±2.26）g/L，优于对照组中的患者白蛋白总量 （31.43±2.31）g/L，二者之间差异符合统计学原理（P＜0.05）；研究组中的患者14天血糖含量为（9.04±1.06） mmol/L，优于对照组中的患者血糖含量（8.13±1.21）mmol/L，二者之间差异符合统计学原理（P＜0.05）。结论： 针对颅脑外伤患者，早期实施肠内营养支持，护理效果显著，有助于患者康复，同时降低其他并发症的发生概率，改 善患者预后，临床上具有推广的意义 [1]。 
胎儿脐带绕颈产程护理中风险管理的应用研究
Authors: 陈 丽姗
Published: September 2023

目的：探讨风险管理在胎儿脐带绕颈产程护理过程中应用的可行性及有效性。方法：96例胎儿脐带绕颈的产妇，随机分为风险管理组和常规护理组各48例，统计分析两组产妇的分娩方式，胎儿宫内窘迫、新生儿窒息发生、基础护理合格情况及护理满意度。结果：风险管理组产妇的自然分娩率显著高于常规护理组（P<0．05），剖宫产率显著低于常规护理组（P<0．05），胎儿宫内窘迫、轻度、重度新生儿窒息发生率均显著低于常规护理组（P<0．05）。风险管理组的基础护理合格率、护理满意度均显著高于常规护理组（P<0．05）。结论：风险管理在胎儿脐带绕颈产程护理过程中应用的可行性及有效性较常规护理高。
急诊危重症监护病房护理管理中的优化抢救流程实施效果分析
Authors: 韩 荣荣
Published: September 2023

目的：研究分析急诊危重症监护病房护理管理中的优化抢救流程实施效果。方法：挑选该院2022年2月 -2023年4月救治的110例急诊危重症监护病房患者，采取双盲法对其进行分组，可分为 A组或 B组，统计分析其抢救效率、抢救成功率和护理满意度；结果：根据抢救具体数据显示：实验组患者的抢救时间和参与抢救医护人员明显少于对照组，组间差异有统计学意义（P＜0.05）。实验组患者的抢救成功率为89.99%，护理满意度为92.72%。对照组患者的抢救成功率为69.09%，护理满意度为76.36%。实验组患者的抢救成功率和护理满意度均明显高于对照组，组间差异有统计学意义（P＜0.05）。结论：急诊危重症监护病房护理管理中对其应用优化抢救流程后，不仅合理分配医疗资源、减少抢救时间和参与抢救医护人员、提高抢救成功率和护理满意度，还可提升团队意识及各项综合能力，改善整体医疗水平，具有推广应用价值。
急诊危重症护理中护理质量指标管理的效果研究
Authors: 张 逢
Published: September 2023

目的：探讨护理质量指标管理在急诊危重症患者护理中的应用效果。方法：选取本院2022年1月～ 2023年1月收治的急诊危重症患者80例为研究对象，运用数字分析法分为常规组40例与质量组40例，常规组患者护理工作接受常规管理内容，质量组患者护理工作接受质量指标管理内容，分别比较两组患者急救工作时间、急救成功率、并发症发生率、舒适度评分、疼痛评分、护理满意度。结果：展开不同方式的护理干预后，质量组患者的急救工作时间短于常规组患者，急救成功率、舒适度评分、护理满意度均高于常规组患者，并发症发生率、疼痛评分均低于常规组患者，均P<0.05。结论：在对于急诊危重症患者的护理中，运用护理质量指标管理可有效提高疾病治疗临床疗效与急诊科护理效率，推动护患和谐共处，提升护理满意度，临床运用效果良好，可推广、运用。
在华留学生医学影像学临床带教策略探索
Authors: 陈 谦 , 付 彤
Published: September 2023

我国高校医学专业在华留学生的教育面临发展和挑战，保障高质量在华留学医学教育质量需要每个教学医院的医学教师进行深刻的思考并提出有效的应对策略。医学影像学是现当代医学疾病诊断和治疗的重要基石，不仅包括多种如 X线、CT、MRI等多种检查方法，覆盖解剖病理生理等基础知识，并且与内外科等亚专业学科广泛交叉。因此，医学影像科临床带教工作对授业老师在专业知识和教学方法的要求更高。当代留学生存在多样的学习方式，过度依赖在线上学习、远程教学，必然与实践学习对疾病和临床工作的认知和理解有偏差。那么，在医学影像科带教老师充分把握专业知识并准确传授给学生的同时，结合一对一带教模式、问题导向及医学案例等教学模式，立足目的导向和检查技术导向的教学策略、及时听取反馈并总结，是保证在华留学生医学影像临床教学质量的重要手段。
短暂性脑缺血护理中个性化健康教育的应用
Authors: 田 园园
Published: September 2023

目的：探讨短暂性脑缺血护理中个性化健康教育的应用效果。方法：选取近两年在我院救治短暂性脑缺血患者58例为对象，根据奇数偶数分为奇数组与偶数组，每组29例，奇数组提供常规护理，偶数组提供个性化健康教育，对比两组效果。结果：偶数组干预后健康知识知晓度和治疗依从性高于奇数组，心理状况和生活质量好于奇数组，数据间存在比较意义（P＜0.05）；偶数组护理满意度100.00%（29/29）高于奇数组82.76%（24/29），数据间存在比较意义（P＜0.05）。结论：短暂性脑缺血护理中个性化健康教育的应用效果显著，值得应用。
NAVIGATING AUDIT QUALITY: UNRAVELING THE IMPACT OF OBEDIENCE, TASK COMPLEXITY, AND INDEPENDENCE
Authors: Sedjati Retina Sri , Amalia Liska Indah
Published: September 2023

This paper investigates the intricate relationships between obedience pressure, task complexity, independence, and audit quality, drawing insights from selected studies. The research underscores the vital role of independence in mitigating external pressures, highlights the amplified impact of obedience pressure under high task complexity, and emphasizes the need for tailored training to navigate challenges. Theoretical frameworks shed light on auditor behavior, accentuating the importance of resilience and ethical conduct. Comparative analysis reveals the nuanced interplay of factors influencing audit quality, offering a holistic perspective for auditors, regulators, and stakeholders seeking to enhance trust, transparency, and accountability in the audit process
Cutaneous Metastasis as a Key Manifestation of Adenocarcinoma on Pancreatic Graft
Authors:   Department of Dermatology, La Fe University and Polytechnic Hospital, Valencia, Spain, Mansilla-Polo Miguel , Escutia-Muñoz Begoña ,   Health Research Institute (IIS) La Fe, Valencia, Spain, Abril-Pérez Carlos ,   Health Research Institute (IIS) La Fe, Valencia, Spain, Martín-Torregrosa Daniel ,   Health Research Institute (IIS) La Fe, Valencia, Spain, Palacios- Díaz Rodolfo David ,   Health Research Institute (IIS) La Fe, Valencia, Spain, Pozuelo-Ruíz Mónica ,   Health Research Institute (IIS) La Fe, Valencia, Spain, Torres-Navarro Ignacio ,   Department of Dermatology, La Fe University and Polytechnic Hospital, Valencia, Spain, Martínez-Cózar Vicent ,   Department of Pathology, La Fe University and Polytechnic Hospital, Valencia, Spain, Botella-Estrada Rafael ,   University of Valencia, Valencia, Spain
Published: September 2023

Cutaneous metastases are a rare phenomenon and usually carry an ominous prognosis upon diagnosis. We present the clinical case of a patient with metastatic pancreatic adenocarcinoma with the singularity of its origin in a graft from a previous donor after a pancreatic-renal transplant for type 1 diabetes. It is essential for every clinician to suspect the presence of skin metastases in every patient with skin lesions in a compatible setting.
The Problems Of Student’s Interests In Calculation At Grade IV at SDN 15 Lolong
Authors: Syaputra Arryal , Efendi Nofriza , Yenti Linda , Safitri Nadya
Published: September 2023

This study aims to determine the interest in counting of grade IV students in learning at SDN 15 Lolong. This type of research uses qualitative methods. Data collected by observation, interview, and documentation techniques. Teacher's research subject class IV and 2 students in class IV. The results of the study show that students' lack of interest in learning and the lack of teachers using media in learning and the limitations of the media for teaching materials and the lack of parental concern for children's learning process at home, thus causing the weak integrity of students
THE Effect of the Local Wisdom based of Think Pair Share (TPS) Learning Model toward Students' Result of Social Learning at Grade IV SDN 21 Pulau Punjung
Authors: Husni Raudatul , Sari Fitria , Anisa
Published: September 2023

This research is motivated by student learning outcomes in social studies learning, there are still many who have not reached the KKM. This type of research is a Pre-Experimental Design research, with a quantitative approach and the form of design using the Quasi-Experimental Method Non-Equivalent Group Pre-test Post-test Design. The subjects of this study were fourth grade students of SDN 21 Pulau Punjung. The sampling of this research used the Probability Sampling (Randomly) technique, which consisted of 44 students. Data collection techniques were carried out by using test and non-test techniques. The data collection tool is in the form of multiple choice questions obtained by 25 pre-test and post-test items through validation tests and reliability tests. Data analysis used the Normality Test, Homogeneity Test and Hypothesis Test/t-test which was processed using SPSS 22. The results of the hypothesis calculation obtained were sig < (0.000 <0.05) which means the t-test rejected the existence of H0 and accepted the Ha contained. Application of the Think Pair Share (TPS) Model Based on Local Wisdom to the Social Studies Learning Outcomes of Fourth Grade Students of SDN 21 Pulau Punjung
The Establishment of Animation Video Media at Vocational Sschool Lesson Grade V SDN 14 Koto Baru, Dharmasraya
Authors: Darniyanti Yulia
Published: September 2023

This research is based on the rill problems, the lack of teaching media that attracts the attention of class V in social lessons, that can make the students do not interest in participating  learning process. The efforts to fix these problems are by using teaching media that are able to make students interested and participating in the teaching and learning process, namely animation video media. The type of this research is research and development by using a 4-D model consisting on define, design, development, and disseminate stages. The results of the validation of the social lesson content animation video media on the validity test by three experts, that have an average score of 90% which is included in the valid category, the practicality test with an average score of 95% which is categorized as practical, while the results of the effectiveness of the video with animation have an average score 83% on average effective. Based on the results of the analysis above, it can be said that the animation video for teaching media in social lesson for class V SD makes easier for students to understand the learning material