bluuebunny/crossref_metadata_2025_split huggingface dataset:
แนวทางการออกแบบหลังคาโค้งที่ใช้วัสดุมุงเหล็กรีดลอน
Authors:   , แสงงาม ณัฐธยาน์ 
Published: June 2024

หลังคาเป็นส่วนปกคลุมอาคาร มีหน้าที่ป้องกันแดดและฝน รูปแบบหลังคามาจากโครงสร้างและวัสดุมุง สำหรับอาคารโครงสร้างที่มีช่วงกว้าง เช่น อาคารโกดัง โรงงาน และคลังเก็บสินค้า นิยมใช้วัสดุมุงจากแผ่นเหล็กรีดลอน เพราะมีคุณสมบัติ บาง เบา และมีหลายรูปแบบ ทั้งแผ่นตรงธรรมดา แผ่นตรงแบบสอบ แผ่นโค้งธรรมดา แผ่นโค้งแบบสอบ แผ่นโค้งดัด และแผ่นโค้งสองทิศทาง จากการศึกษาเบื้องต้นพบว่า การผลิตแผ่นโค้งมีกระบวนการผลิตที่ซับซ้อน ซึ่งส่งผลต่อระยะเวลาและค่าใช้จ่ายที่สูงขึ้น จึงมีวัตถุประสงค์ศึกษาสภาพปัจจุบันและปัญหา เพื่อเสนอแนวทางการออกแบบหลังคาโค้ง

การศึกษาครั้งนี้ได้เลือกโครงการกรณีศึกษา จำนวน 13 อาคาร พบว่าการผลิตแผ่นโค้งมีใช้แผ่นโค้งแบบไม่ดัด จำนวน 5 หลัง และแบบดัด จำนวน 8 หลัง โดยนำส่วนโค้งของหลังคาจากแบบสถาปัตยกรรมมาใช้วิเคราะห์การผลิต โดยแปรผันตามรัศมีรุ่นของผลิตภัณฑ์แผ่นหลังคา ซึ่งระบุความสามารถความโค้งไม่ดัดไว้ในคู่มือผลิตภัณฑ์ การศึกษาครั้งนี้ใช้วิธีการทดลองโดยการจำลองแบบ 2 มิติและการคำนวณ เพื่อพิจารณาและหาแนวทางการกำหนดความโค้ง โดยทำทดลอง 2 ขั้นตอน ดังนี้ ขั้นตอนที่ 1 ทดลองปรับค่าความโค้ง เพื่อใช้วิเคราะห์โค้งโดยไม่ดัดและหาความสัมพันธ์กับหลังคาอาคาร ขั้นตอนที่ 2 ทดลองใช้วิธีต่อแผ่น เพื่อวิเคราะห์ความสามารถในการรับน้ำฝน ระยะพาดแป โดยใช้ข้อคำนึงเรื่องถึงวิธีการขนส่งแผ่น

จากการศึกษาทำให้ทราบว่าแผ่นโค้งไม่ดัดทำได้ทุกอาคารที่มีหลังคาโค้ง โดยมีวิธีการกำหนดค่าความโค้งที่มีหน่วยเป็นรัศมีและความลาดเอียงของหลังคาที่มีหน่วยเป็นองศา โดยกำหนดรัศมีและองศาให้เป็นไปตามคำแนะนำของคู่มือตามรุ่นผลิตภัณฑ์ ที่มีค่าแปรผันกับความกว้างของอาคาร และแปรผกผันกับความสูงของหลังคา

สำหรับกรณีการใช้หลังคาโค้งยาวต่อเนื่องต้องคำนึงด้านการขนส่งแผ่นหลังคา โดยสามารถยาวได้ตามข้อจำกัดของรถบรรทุกที่ใช้ขนส่งและการเข้าถึงหน้างานก่อสร้าง ซึ่งหากขนส่งไม่ได้จะส่งผลต่อการนำเครื่องจักรมาผลิตที่หน้างานก่อสร้างสามารถใช้วิธีการต่อแผ่นเพื่อพิจารณาข้อคำนึงดังกล่าว
MOBILIDADE ESPACIAL VIA TRANSPORTE RODOVIÁRIO INFORMAL DE PASSAGEIROS ENTRE AS CIDADES DE FRANCISCO SÁ E MONTES CLAROS (MG)
Authors: Alves Rahyan de Carvalho , Rocha Vanessa Tamiris Rodrigues , Bortolo Carlos Alexandre de 
Published: June 2024

O objetivo deste trabalho é discutir a mobilidade espacial de pessoas presente entre Francisco Sá e Montes Claros, cidades localizadas no Norte de Minas Gerais, viabilizada pelo transporte rodoviário informal. Para tanto, utilizou-se como metodologia: revisão bibliográfica e documental e análise de dados coletados em trabalho/exercício de campo realizado no mês de abril de 2023, com a aplicação de questionários aos taxistas registrados na Prefeitura Municipal de Francisco Sá. Considera-se que, a maioria dos entrevistados estão de 5 a 10 anos nesta profissão, tornaram-se taxistas para sustentar a família, já que outros empregos são escassos, principalmente em cidades pequenas, como Francisco Sá.
Leveraging Digitalization and Servitization to Improve Financial Performance: An Empirical Analysis
Authors: Anum  , Fatima  , Ifrah  , Lyba  , Sajjad Javaria 
Published: June 2024

This research investigates the interplay between digitalization, servitization, and Corporate Social Responsibility (CSR) in influencing the financial performance of Pakistani banks. The study addresses a critical gap by examining how these factors combine to impact bank profitability in the contemporary landscape of digital transformation and evolving customer demands. A quantitative approach is employed, utilizing survey data collected from branch managers in Pakistani banks. Standardized scales measure digitalization, servitization, CSR, and bank performance. The findings demonstrate a positive direct effect of digitalization on bank performance. Furthermore, servitization strengthens this positive impact, suggesting that banks offering a comprehensive suite of services alongside traditional products achieve superior financial outcomes. Notably, the study reveals no significant short-term contribution of CSR to a bank's financial performance. Thus, the study sheds light on the crucial role of servitization in amplifying the positive effects of digitalization on bank performance. By strategically integrating services with products, banks can leverage digital technologies to become more data-driven and enhance their financial health.
Representasi Budaya Jember dalam Jember Fashion Carnival: Pendekatan Teori Representasi Stuart Hall
Authors: Ivana Grace Sofia Radja  , Leo Riski Sunjaya  
Published: June 2024

This article aims to analyze the representation of Jember culture in the Jember Fashion Carnival (JFC) using Stuart Hall's representation theory approach. The main concepts applied in this analysis are change and resistance, which are used to understand how cultural symbols are represented and interpreted in JFC. The data collection process was carried out through literature study. Where the data obtained comes from the results of research and scientific work of other people which is studied and then developed. Data analysis was carried out by combining the concepts of Stuart Hall's representation theory with the findings found in the JFC event. The results of the literature study analysis show that JFC is an important forum for representing Jember's cultural identity through costume modifications, dance, music and other performances. In addition, the media plays an important role in the spread and influence of these cultural representations. In the context of Stuart Hall's representation theory, change refers to the transformation of cultural symbols in the JFC, while resistance describes the process of building cultural representations through interactions and agreements between JFC actors, the government and society. Through this process, Jember's cultural identity is represented and interpreted in JFC events. The implication of the results of this research is the need for continuous support in developing and promoting Jember culture through collaborative efforts between the government, cultural actors and the community. In this case, JFC can be an effective means of strengthening and expanding understanding and appreciation of Jember's cultural identity.
Sobrepeso, obesidad y parámetros bioquímicos en adolescentes de Mochitlán, Guerrero
Authors: VENCES VELÁZQUEZ GUILLERMINA , Díaz-Sánchez Jennifer Guadalupe , Giles-Fino Fred David , Cahua-Pablo José Ángel 
Published: June 2024

El sobrepeso y obesidad son los problemas de salud más importantes, no solo en el país, sino en todo el mundo. Objetivo: Conocer estado nutricio y parámetros bioquímicos en adolescentes de Mochitlán, Guerrero. Material y métodos: Se llevó a cabo un estudio transversal. Se determinó antropometría y parámetros bioquímicos mediante técnicas colorimétricas. Para la comparación de medias se usó la prueba t de student y medianas U de Mann-Whitney. La captura y análisis de datos se realizó en el programa Stata v.16.0 y valor de p<0.05 fue estadísticamente significativo. Resultados: Participaron 110 adolescentes (71.8% mujeres) de 12 a 16 años, con una media de 13.6 ± 0.98, la prevalencia de sobrepeso fue de 10% (90.9% mujeres) y de obesidad 22.7% (56% mujeres). La prevalencia de hipertensión fue mayor en las mujeres (62.1%). En los parámetros bioquímicos, el nivel de glucosa >100 mg/dL fue de 18.18%, colesterol >200
mg/dL de 0.91% y triglicéridos >150 mg/dL de 7.27%. Conclusión: La prevalencia de sobrepeso y obesidad de acuerdo con el IMC fue mayor en las mujeres, se observaron diferencias entre el peso, talla y la tensión arterial sistólica en los hombres, pero no entre los parámetros bioquímicos en ambos sexos.
Las Relaciones públicas como factor estratégico de las organizaciones desde la praxis de las y los egresados de Ciencias de la Comunicación en Guerrero
Authors: Morales Mónica Violeta , Tello Divicino Aleida Leticia 
Published: June 2024

Las relaciones públicas son una herramienta indispensable para desarrollar y mantener la reputación de las organizaciones. Pero qué tanto, las y los egresados de la Licenciatura en Ciencias de la Comunicación de la Universidad Autónoma de Guerrero están ejerciendo las competencias de relaciones públicas en el campo laboral, cuáles son las habilidades que las organizaciones públicas y privadas les exigen, en qué situaciones potenciales de gestión de conflictos las practican y qué tan importantes son para el desempeño de su trabajo. Para aproximar la práctica profesional de las relaciones públicas con el ámbito laboral, es que se optó por una investigación cuantitativa-deductiva, no experimental, transversal con un alcance exploratorio-descriptivo. La unidad de análisis fue de 60 egresados laborando en organizaciones gubernamentales, a quienes se aplicó una encuesta con 11 reactivos. Se desmostró que sí están ejerciendo como relacionistas públicos con exigencia en habilidades para la gestión de redes sociales con fines informativos y de vinculación a los medios de comunicación y no en generar un clima de paz en sus organizaciones. Asi mísmo, se encontró que el perfil profesional de los egresados impacta en el fortalecimiento de la reputación de las instituciones educativas privadas
A Randomized, Double-blind, Placebo-controlled Study of Proteoglycan and Phosphatidylserine for Management of Knee and Hip Pain
Authors: Hansen MD Poul Aage , Buchard Hønnerup Nicoline Stampe , Sprunk-Jansen Kari-Nina 
Published: June 2024

Aims: This study was designed to evaluate if combined oral administration of proteoglycan and phosphatidylserine (PG+PS) for 30 days would improve osteoarthritis symptoms in adults with moderate to severe knee and hip pain.
Study Design: Randomized, double-blind, placebo-controlled study.
Place and Duration of Study: Well-Come Fitness & Health Center (Copenhagen, Denmark), between September 2023 to November 2023.
Methodology: A total of 96 participants (65 female, 31 male, mean age 51 years, mean body mass index 25 kg/m2) were randomized to take 1 tablet/day of placebo (N=31), 12.5 mg proteoglycan (PG, N=32), or 12.5 mg proteoglycan + 60 mg phosphatidylserine (PG+PS, N=33) orally for 30 days. The change from baseline in physical performance was evaluated by stair climb test (SCT) and self-paced walk test (SPWT). Joint (knee and hip) pain prior to physical performance tests was evaluated by the change in visual analog scale (VAS) score (range 0-10).
Results: Statistically significant improvements were observed in the change from baseline to Day 30 for the SCT and SPWT for PG+PS vs placebo and PG+PS vs PG (all P < .05). Statistically significant improvements in joint pain (VAS Score) were also observed for PG+PS vs placebo and vs PG. Improvements in physical performance and joint pain with PG+PS generally occurred during the first week of the study.
Conclusion: Combination administration of PG+PS for 30 days reduced joint pain and improved physical performance in adults with moderate to severe knee and hip pain. Additional studies to further validate these findings are warranted.
Transforming Agriculture: Harnessing Robotics and Drones for Sustainable Farming Solution
Authors: Das Sushmita 
Published: June 2024

The agricultural sector is facing unprecedented challenges due to increasing food demand, environmental degradation, and labour shortages, exacerbated by a burgeoning global population. To address these issues sustainably, the concept of "smart farming" utilizing advanced robotics and drones has emerged as a transformative solution. This review paper delves into the significant impact of these cutting-edge technologies on modern agriculture, focusing on their applications, benefits, challenges, and future prospects. Robotics in agriculture have advanced considerably, playing crucial roles in tasks such as tillage, seeding, crop protection, harvesting, and animal husbandry. The latest robotic systems are equipped with artificial intelligence (AI) and machine learning algorithms, enabling them to perform complex tasks with high precision and efficiency. These technologies have the potential to enhance productivity while minimizing environmental impacts through precision farming techniques. Drones, similarly, have revolutionized precision agriculture with their applications in monitoring, spraying, mapping, and surveillance. The latest drone models are equipped with multispectral sensors, GPS technology, and AI-driven analytics, providing farmers with real-time data and actionable insights. This helps in optimizing resource use, improving crop health, and increasing yield while reducing environmental footprints. Despite these advancements, several challenges impede widespread adoption. High initial costs, technological learning curves, regulatory hurdles, and data security concerns remain significant barriers. Additionally, the integration of these technologies requires substantial infrastructure and training, which can be daunting for small-scale farmers. The paper emphasizes the need for strategic investments and supportive policies to overcome these challenges. Collaborations between technology developers, agricultural experts, and policymakers are crucial to drive innovation and facilitate the adoption of smart farming practices. Robotics and drones hold immense potential to revolutionize traditional farming practices. By harnessing these technologies, the agriculture industry can achieve sustainable solutions, enhancing productivity and ensuring food security for the future. This review provides a comprehensive analysis of the current state and future directions of smart farming, underscoring the pivotal role of robotics and drones in transforming agriculture.
Morphology and thermal stability of cross‐linked silk fibroin microparticles prepared by the water‐in‐oil emulsion solvent diffusion method
Authors: Baimark Yodthong 
Published: December 2011

ABSTRACTIn this work, the water‐in‐oil emulsion solvent diffusion method was developed as an alternative method for preparing cross‐linked silk fibroin (SF) microparticles. Aqueous SF solution and ethyl acetate were used as water and oil phases, respectively. Influence of cross‐linking on morphology and thermal stability of the SF microparticles were investigated. Genipin was used as a cross‐linker. The SF microparticles had spherical shape with smooth surface when Span80 was used as the oil‐soluble emulsifier. The SF in aqueous solution was cross‐linked with genipin before microparticle formation. Internal morphology of the SF microparticles observed on broken microparticles showed as sponge. The cross‐linking induced SF conformational changes from random coil to β‐sheet form. Porosity of the SF microparticle matrices decreased and thermal stability increased when the SF was cross‐linked and the degree of cross‐linking was increased. © 2011 Curtin University of Technology and John Wiley & Sons, Ltd.
Study of the swelling and stability properties of chitosan–xanthan membranes
Authors: Veiga Itiara Gonçalves , Moraes Ângela Maria 
Published: December 2011

AbstractThe production of stable membranes formed by chitosan–xanthan complexation employing different polysaccharide concentrations and chitosan flow rates is described in this work. The membranes were characterized in terms of their morphology, thickness, maximum uptake capacity, and mass loss in physiological solutions, water drainage ability, and mechanical resistance. The results obtained show that it is possible to produce membranes with high swelling capacities and drainage ability (up to 61 g of H2O per gram of dry membrane and 5900 g m−2 day−1, respectively) without significant mass loss when exposed to aqueous solutions (maximum 13%). The membranes obtained at the chitosan solution flow rate of 300 mL h−1 had the most suitable mechanical properties. Increases in polysaccharide concentration produced higher water absorption and reduction in tensile strength at break. Therefore, the material obtained showed properties that suggest its promising applications as wound dressings or as scaffolds for animal cell cultures. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Preparation and characterization of a prolonged and sustained drug delivery system: Linear polyacrylamide in poly(N‐isopropylacrylamide)/clay hydrogels
Authors: Jiang Yongmei , Li Biao , Chen Xiaojin , Zhu Meifang 
Published: December 2011

AbstractIn this contribution, a novel smart drug delivery system based on poly(N‐isopropylacrylamide) (PNIPAAm), clay, and linear polyacrylamide (PAAm) was developed for prolonged and sustained controlled drug release. Various amounts linear PAAm were incorporated into PNIPAAm/clay hydrogels. Resulting hydrogels were characterized by scanning electron microscopy, differential scanning calorimetry, and compression measurements to investigate the morphological, thermal, and mechanical properties. The swelling ratio and response kinetics on heating or cooling were also investigated to understand the smart properties. Finally, bovine serum albumin (BSA), used as the model drug, was loaded into the hydrogels to examine and compare the effects of controlled release at different temperatures (20°C and 37°C). The result indicated that all the PNIPAAm/clay/linear PAAm gels showed good smart property with a higher swelling ratio and more complicated deswelling behavior. Although the compression properties of the resulting hydrogels decreased by incorporating the linear PAAm into the network of PNIPAAm/clay, they still showed high compression stress and excellent reversibility. BSA release behavior at 20°C and 37°C revealed that a prolonged release of BSA with the auto‐adjustable function to external temperature changes. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Focused deposition of electrospun polymer fibers
Authors: Neubert S. , Pliszka D. , Góra A. , Jaworek A. , Wintermantel E. , Ramakrishna S. 
Published: December 2011

AbstractControl possibility of the electrospinning process appears to be one of the most challenging tasks in the manufacturing of fibrous structures. At the same time, its versatility and simplicity make electrospinning one of the most popular nanotechnology method for the production of one‐dimensional nanostructures. In this study, focused electrospinning of nylon, polylactic acid‐copoly‐caprolactone (PLACL), and poly(vinyl chloride) (PVC) fibers is thoughtfully studied. It has been found that electric field modification by electrostatic lenses, capillary‐nozzle tip‐to‐collector electrode distance, and polymer‐solvent composition are the critical parameters to achieve small deposition spots with good fibers quality. Upon optimization, nylon, PLACL, and PVC fibers deposition to fabricate a confined area with less than 4 mm, diameter and fibers stripes with a width of 0.15 mm are achieved. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Span‐60‐based organogels as probable matrices for transdermal/topical delivery systems
Authors: Behera B. , Patil V. , Sagiri S. S. , Pal K. , Ray S. S. 
Published: December 2011

AbstractThe current study describes the preparation and characterization of thermoreversible span‐60 and sunflower oil (SO)‐based organogels as a matrix for drug delivery. Effect of gelator concentration on the properties of the organogels was studied by physical property evaluation, stability, light microscopy, FTIR spectroscopy, XRD, thermal analysis, pH, and hemocompatibility studies. The drug release kinetics and antimicrobial efficacy of the salicylic acid loaded organogels were studied. The rate of gelation of the gels was found to be quicker in organogels with higher gelator proportions. The gels were inherently stable when stored below 25°C. The micrographs indicated the presence of needle‐shaped crystals which formed aggregates resulting in the formation of three‐dimensional networked structures. FTIR indicated intermolecular hydrogen bonding amongst SO and span‐60 molecules responsible for the gelation. There was an increase in the crystallinity and the melting point of the organogels as the proportion of the organogelator was increased. The pH of the organogels indicated nonirritant nature of the gels, which were also found to be hemocompatible. The release of SA from organogels followed Higuchian kinetics and showed prolonged antimicrobial activity. The preliminary results indicated that the organogels may be tried as a matrix for controlled drug delivery. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Effect of multiwalled carbon nanotubes on the morphology and electrical properties of polyamide 6/polystyrene blends prepared via successive polymerization
Authors: Yan Dongguang , Yang Guisheng 
Published: December 2011

AbstractIn this article, polyamide 6/polystyrene/multiwalled carbon nanotubes (PA6/PS/MWNTs) nanocomposites were prepared via successive in‐situ polymerization. The effect of MWNTs on the morphology and electrical properties of polyamide 6/polystyrene (PA6/PS) blends was investigated in detail. Scanning electron microscopy and transmission electron microscopy analysis indicated that MWNTs were selectively located at the interface of PA6 and PS. The interface‐localized MWNTs could act as compatibilizers, which resulted in the decreased size of PS domains in PA6 matrix and the delayed phase inversion of immiscible PA6/PS blends. The PA6/PS interface was continuous in the MWNTs‐filled (70/30) PA6/PS blends. Selectively located MWNTs at the continuous interface were connected with each other, which resulted in the establishment of a MWNTs conductive pathway in (70/30) PA6/PS blends. Electrical properties analysis indicated that the volume resistivity of (70/30) PA6/PS blends with 0.5 and 1.0 wt % MWNTs loading was decreased by about nine orders of magnitude. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Effects of imidazolium room temperature ionic liquids on the fluorescent properties of norfloxacin
Authors: Zou Yujie , Wang Huili , Wang Wenwei , Ma Meiping , Wang Ping , Wang Chengjun , Wang Xuedong 
Published: December 2011

ABSTRACTThe effects of 12 imidazolium room temperature ionic liquids (RTILs), including [Cnmim]BF4, [Cnmim]PF6, and [Cnmim]Br (n = 4, 6, 8, 10), on the fluorescent properties of norfloxacin were examined. The fluorescence intensity of norfloxacin at 0.1 mg/L in methanol significantly increased with the addition of [Cnmim]BF4 and [Cnmim]PF6 into the solvent at 0.1–15.0%. The sensitizing effect may result from the higher viscosity of the RTILs–methanol mixture solvent than that of the methanol itself. However, the quenching effect on fluorescence of norfloxacin was observed in [Cnmim]Br–methanol solvent. The fluorescence intensities of norfloxacin decreased with an increase in the alkyl chain length of the alkyl substituents of the imidazolium ring of RTILs. The main interaction between the RTILs and norfloxacin is not by hydrogen bonding. The fact, that some RTILs can significantly sensitize fluorescence of norfloxacin, indicates that RTILs could be a group of promising solvents for development of sensitive spectrofluorimetric methods for determination of norfloxacin at ultra‐trace levels in environmental samples. Copyright © 2011 John Wiley & Sons, Ltd.