bluuebunny/crossref_metadata_2025_split huggingface dataset:
O papel do ácido tranexâmico na prevenção e gerenciamento da perda de sangue na artroplastia total de articulação
Authors: Thammaiah Adarsh , Gajapurada Siddalingamurthy , Nandakumar Sanjana , Sastry Purushotham , Mruthyunjaya Mruthyunjaya 
Published: October 2021

Resumo
Objetivo Coletar dados sobre o papel desempenhado pelo ácido tranexâmico na prevenção e gerenciamento da perda de sangue em pacientes submetidos à artroplastia total do quadril (ATQ) e à artroplastia total do joelho (ATJ).
Métodos Neste estudo prospectivo e comparativo, 30 pacientes submetidos à ATQ ou à ATJ foram alocados aleatoriamente em 1 de 2 grupos com 15 pacientes. O ácido tranexâmico foi administrado por rotas intravenosas e tópicas no grupo de intervenção, mas não foi administrado no grupo controle. Foram observados parâmetros sanguíneos pré-operatórios, perda de sangue intra- e pós-operatória e necessidade de transfusão de sangue. A análise estatística foi realizada utilizando-se teste do qui-quadrado e o teste-t independente.
Resultados O grupo de intervenção apresentou hemoglobina mais elevada no pós-operatório de forma estatisticamente significante (p = 0,03), menor diferença entre concentração de hemoglobina pré- e pós-operatória (p = 0,046), menor diferença entre volume de células embaladas pré- e pós-operatório (p = 0,06), menor perda de sangue intraoperatória medida (p = 0,015) e menor volume de sangue coletado na drenagem (p = 0,0291) em comparação com o grupo controle. Também houve redução da frequência de transfusões de sangue no grupo de intervenção (p = 0,0008).
Conclusão O ácido tranexâmico está associado à redução da perda sanguínea intraoperatória e pós-operatória e à redução da frequência de transfusões de sangue em pacientes submetidos à ATQ/ATJ.
Evaluating Effectiveness of the Use of an Extremity Stabilization Device for Vascular Access Procedures in Pediatrics
Authors: Templet Tricia , Rholdon Roger , Bienvenu Ansley 
Published: October 2021

AbstractThe purpose of this study is to evaluate the effectiveness of SafeBoard, a Food and Drug Administration–approved extremity stabilization device, as an assistive method in performing peripherally inserted central catheter procedures on children 0 to 3 years of age. This is a retrospective chart review (n = 59) of vascular access procedures where SafeBoard was utilized (n = 32) in comparison to those procedures which utilized a traditional approach to placement (n = 27). Statistical analysis demonstrated significant effect on length of procedure time, number of personnel needed for procedure, and success of placement when SafeBoard was utilized. Obtaining vascular access in pediatrics can be a challenging endeavor. Most young pediatric patients require procedural sedation and/or assistive personnel as a “holder” for successful vascular access placement to occur. An alternative option for extremity stabilization may provide improved workflow and improved placement success, which in turn may positively affect workflow.
A Pediatric Case of Benign Episodic Unilateral Mydriasis with Clinical Characteristics Resembling Tadpole Pupil
Authors: Henneberg Rebecca Lise Gammelgaard , Vandborg Pernille Kure , Hansen Jonas Kjeldbjerg 
Published: October 2021

AbstractBenign episodic unilateral mydriasis is an episodic disturbance with dilatation of the entire pupil, often lasting for hours. It occurs most frequently in women aged between 20 and 50 years and is closely associated with migraines. Only a few pediatric cases have been reported. The demographics of benign unilateral mydriasis correspond to another episodic disturbance of the pupil, the tadpole pupil. Also, the clinical similarities between the two conditions are numerous. However, tadpole pupil is an irregular distortion of the pupil lasting from seconds to minutes and occurring in clusters. We present a 16-year-old girl with benign unilateral mydriasis and migraine. Her episodes of mydriasis lasted from seconds to minutes, occurred in clusters, and were thus like episodes of tadpole pupil. Benign unilateral mydriasis presenting this way has not been reported previously. This observation links the phenotypes of benign unilateral mydriasis and tadpole pupil closer together. The given case provides new knowledge as it (i) expands the clinical spectrum of benign episodic unilateral mydriasis, (ii) links the phenotypes of benign unilateral mydriasis and tadpole pupil together, and (iii) in comparison with knowledge about autonomic failure in migraine patients may add to hypotheses on pathophysiology in both pupillary disorders.
Recent advances and applications of digital holography in multiphase reactive/nonreactive flows: a review
Authors: Huang Jianqing , Cai Weiwei , Wu Yingchun , Wu Xuecheng 
Published: October 2021

Abstract
In various multiphase flows, the characterization of particle dynamics is important in the understanding of the interaction between particles and the surrounding flows. Digital holography (DH) is a versatile 3D imaging technique, which has shown great advantages in quantitative analysis and nonintrusive diagnosis of various particle fields. This review focuses on the advances and applications of DH in multiphase reactive/nonreactive flows in the last two decades. First, the basic principles of DH are introduced, including its mathematical background and representative experimental configurations. Then, the image processing algorithms for hologram reconstruction and automatic focusing are summarized, along with the methods for separating overlapping particles and tracking moving particles. As a prevailing and powerful tool, the recent applications of deep learning in processing holographic images is also included in this review. Furthermore, the applications of DH in the characterization of particle dynamics in multiphase reactive/nonreactive flows are surveyed in detail. Lastly, the review concludes with a discussion on the technical limits of DH and provides insights into its promising future research directions.
Performance analysis of constant current heated antagonistic shape memory alloy actuator using a differential resistance measurement technique
Authors: Bhargaw Hari N , Botre B A , Singh Samarth , Hashmi S A R , Akbar S A , Sinha Poonam 
Published: October 2021

Abstract
This work presents the development of a precise, constant current heating mechanism for an antagonistic shape memory alloy (SMA) actuator. The actuator was developed using a pair of SMA wires arranged in an antagonistic configuration. SMA possesses a unique phase-dependent, resistance variation property which is called self-sensing. This phenomenon is observed during thermal phase transition. A constant heating current was employed to measure combined differential resistance (ΔR) which provides insignificant hysteresis and linear relationship with displacement. ΔR eventually helps to determine the present position of the actuator for sensorless feedback control. The aim is to remove additional external sensors, reducing actuator footprint and interface complexity using the proposed study. The performance analysis of the actuator was evaluated under constant current by the tracking trajectory of reference signals. The tracking results confirmed the improvement in operating bandwidth by a reduction in displacement. The heating module mainly consisted of a low pass filter, operational amplifier with a current sense feedback mechanism that regulates the heating current in proportion to PWM signals. The result shows a significant 21% variation in the observed value of ΔR (1.200–0.254 Ω) between the major–minor loops. The study confirms linearity and maintains similarity by highest correlation 0.9508 during open-loop, which further improves to 0.9891 in close feedback reference tracking with an error band ±0.05 mm.
Augmented Reality Geometrical Optics (AR-GiOs) for Physics Learning in High Schools
Authors: Kencana H P , Iswanto B H , Wibowo F C 
Published: October 2021

AbstractThis study aims to produce “Augmented Reality Geometrical Optics (AR-GiOs)” as a medium for physics learning for geometrical optics in high school. The method used in this study is the Research and Development method with the ADDIE model (Analyze, Design, Develop, Implement, and Evaluate). AR-GiOs was developed to facilitate students in learning the concept of image formation and image properties of mirrors and lenses. AR-GiOs can display four 3D simulations, including 3D simulations of the image formation process by a concave mirror, a convex mirror, a concave lens, and a convex lens. In addition to AR, in this study, a worksheet was also developed to guide student learning activities and valuable as a marker. The results of product validation covering the material and media aspects got a very good average score (84% and 90%). Based on the results of the expert validation test, it can be concluded that AR-GiOs is suitable for use as a medium for learning physics in high school.
Design of Massive Online Simulation in The Learning Physics of Thermodynamics Process
Authors: Lestari M A , Wibowo F C , Delina M 
Published: October 2021

Abstract
The thermodynamic process is an important material in learning physics. The needs analysis stated that 96.8% of students still experienced difficulties in understanding the thermodynamic process material. One of the media that can be used to help students understand the phenomenon of thermodynamic processes is simulation. This study aims to design a physics learning media in the form of a Massive Online Simulation (MOS) that can be accessed via an internet connection. The development model used in this study is ADDIE (analysis, design, develop, implement, evaluate), but in this study it was only carried out until the design stage. Analysis stage is obtained through literature study and student and teacher needs analysis. At the design stage, it focuses on making Massive Online Simulation (MOS) media designs on thermodynamic processes. This research is expected to produce a physics learning media design in the form of a Massive Online Simulation (MOS) on thermodynamic processes which can be an alternative to online-based interactive learning media that can be accessed anywhere and anytime.
Development of Online Learning Videos: An Innovation for Higher Education Students in Electromagnetic Experiment Course During a Pandemic COVID 19
Authors: Yogihati C I , Putri D S , Suaidi D A , Hartatiek  , Yudyanto  
Published: October 2021

Abstract
The ongoing COVID-19 pandemic has led to government decisions regarding the continuation of online lectures. This transformation becomes a problem in the ongoing compulsory course for students, namely electromagnetic experiment. Until finally the researchers chose video media as the answer to these problems. In the process, video development was carried out in two cycles. Through this development, the researcher wanted to know the ability of video in presenting data and its feasibility. The subjects of this study were students of S1 Physics Education, Universitas Negeri Malang in batch 2019 with a total of 100 people. This video was developed using the Four-D method which consists of defining, designing, and developing stages. The first cycle video acts as the preceding video and the second cycle video acts as the development result video. Practical reports and student assessment questionnaires are used as a review of development results. As a result, students obtained an average experiment report score of 93 in the first cycle and 96 in the second cycle. Student assessments related to the first cycle of media showed that 70.57% stated that they were feasible and became 79.86% in the second cycle.
Implementation Management Strategies for Modern Physics Experiment with Online Systems Approach to Improve The Quality of Learning or Physics Students
Authors: Sutrisno  , Simaremare A , Suyudi A , Taqwa M R A , Parno  
Published: October 2021

Abstract
Since COVID-19 broke out in early 2020, State University of Malang has implemented online lectures. This transformation creates new problems, including in Modern Physics experiment lectures. The fact is that when students was founded with the problem of assembling complex tools they are unable to implement their knowledge. The problems with Modern Physics experiment lectures that have existed for a long time are now exacerbated by the emergence of the COVID-19 pandemic. In overcoming this problem, the researcher implementation, management strategy with a systems approach as a solution with the consideration that this strategy is able to direct students to think critically. This study aims to improve students’ practical understanding and learning quality. This research was conducted in 2 cycles. The research instruments were questionnaires and experiment reports. Based on the data analysis of the questionnaire cycles I and II, it was concluded that the quality of the implementation of modern physics experiment learning was good with an average result of 88.38%. In addition, there is an increase in students’ practical understanding which can be seen from the average score of the experiment report, where the first cycle is 91.33 and the second cycle reaches 95.
The Influence of Discovery Learning Model using PhET and Scientific Skills of Class XI High School Students
Authors: Ramadhan L A , Budi A S , Delina M 
Published: October 2021

Abstract
This study aims to determine the effect of interaction between discovery learning models and scientific attitudes on students metacognitive skills. The method used in this study is a quasi experimental design of treatment by level 2x2. The number of samples in this study was 144 high school grade XI students. The sample was divided into two, namely the control class and the experimental class. The control class was given learning using the free discovery model while the experimental class uses the guided discovery model by having high and low student scientific attitudes. After treatment was given to both groups, a test was conducted to find out the students metacognitive skills. Then compare the two results to see the interaction between learning models and scientific attitudes towards students metacognitive skills.
Digital Storytelling of Physics (DiS-Phy): Learning Physics from Home Through Stories
Authors: Sanjaya L A , Putri E A , Wibowo F C , Robby D K , Puspa R W D , Pertiwi W A , Sianipar L K , Qoiriyah W , Sitompul H 
Published: October 2021

AbstractThis study aims to develop a product such as “Digital storytelling of Physics (DiS-Phy)” that can be used as a physics’ educational media for distance learning (PJJ) on magnetic field material. DiS-Phy developed as a digital storytelling media which is able to combine several learning media such as writing, pictures and learning videos in one medium. The developed DiS-Phy also equipped with scientific literacy questions. DiS-Phy can be accessed on all types of distance learning devices such as smartphones, laptops and tablets that are connected to the internet. DiS-Phy including the type of research and development (Research & Development) which refers to the ASSURE model. The result of validation test shows the percentages of 91,07%, according to subject-matter expert, 93,16%, according to media expert and 87,50% according to learning expert. DiS-Phy also tested by 4 physics teachers at senior high school in Jakarta that achieved 92,57% points that make this product has been qualified as a worthy physics’ distance learning device. Also of 35 as respondents in this study shows the percentages of 87,48% points that make this product worthy to use as an educational media. Based on the results, it can be concluded that the DiS-Phy has been qualified as a worthy physics’ distance learning device for teachers and students.
TPACK and Augmented Reality in Kinematics Practicum Module: Forming HOTS Physics Education Students
Authors: Bakri F , Kusuma R , Permana AH 
Published: October 2021

Abstract
High Order Thinking Skills (HOTS) are needed to support 21st-century skills. Students are required to think critically in overcoming a problem. HOTS can be trained through the lab activities. The method used in this research is research and development (R&D) with a Dick & Carey approach. This article described the implementation of TPACK and augmented reality in the kinematics practicum module to forming HOTS for physics education students. This practicum module has implemented integrated technology, pedagogy, content, and knowledge. The addition of augmented reality media makes it easier for students to understand practicum steps and forms of phenomena related to practicum. The module was declared feasible in terms of material, media, and pedagogical concepts in forming the HOTS abilities of physics education students. The stages of HOTS formation in the module present a video of real-world phenomena as a stimulus, and students are asked to answer the pre-test related to the stimulus video, students are asked to create observation tables according to the steps in the practicum, students are asked to process data, and analyze concepts regarding practical material which is related.
TPACK in Blended Learning Media: Practice 4C Skills for Rotational Dynamics in Senior High School
Authors: Susila A B , Indiyahni I , Bakri F 
Published: October 2021

Abstract
In the 21st century, the fields of ICT and education are like two sides of a coin that cannot be separated. The skills of students must support the rapid development of science and technology. Workers in the 21st century have at least 4C competencies, namely: critical thinking, communication, collaboration, and creativity. The emergence of the Covid-19 in 2020 demands a blended learning model as an ideal learning process. This article describes research on website development as a blended learning medium for rotational dynamics in high school. The research method used is Research and Development with a Dick & Carey approach. Media has been produced in a website that combines technological knowledge, pedagogical knowledge, and physics content knowledge (TPACK) in multiple representations with stages to train students’ 4C skills. The stages of 4C skills on the website as a blended learning medium that developed were: (1) criticizing initial information; (2) developing and compiling arguments, reasons, assumptions, and evidence; (3) communicating arguments, reasons, assumptions, and evidence; (4) criticizing the quality of arguments, reasons, assumptions, and evidence; (5) open-minded; (6) seek new information; (7) conclude. Media also facilitates communication between users to build networks and improve collaboration capabilities. The results of this study have been tested for eligibility by material physicists, learning experts, and media experts. The eligibility test results of the website as a blended learning medium for rotational dynamic material in high school were declared eligible to practice 4C skills.
Blackbody Radiation Experimental Apparatus (Arabeta) to Support Physics Learning for Senior High School Students
Authors: Safari I , Susilo A B , Rustana C E 
Published: October 2021

Abstract
As part of ongoing research to develop a tool for teaching thermal radiation, we have constructed an Experimental Apparatus of Blackbody Radiation (ARABETA). Some previous researches have been conducted to investigate students understanding of Modern Physics, but very little on the topic of Black-body radiation. Apart from being more abstract, the experimental apparatus on this topic are also almost difficult to find in school laboratories. A preliminary study that involved 53 physics teachers in Jakarta region confirmed that black body radiation is a concept that is difficult to visualize to students during learning. Therefore, we developed a simple apparatus that is capable of measuring the temperature and thermal radiation of the samples used. This research uses research and development model by following some steps of Borg and Gall. The results of this measurement are shown in a graph of intensity against the multiplication result of the Stefan-Boltzmann and the fourth power of its absolute temperature, so that the emissivity value of the sample can be obtained. Through this development, we may provide an alternative solution for the experimentation issue in the learning of blackbody radiation at senior high level.
Transition of Learning Physics Technology Using Virtual Practicum to High School Physics Teachers in Aceh Barat District
Authors: Farhan A , Wahyuni A , Herliana F , Akhyar A 
Published: October 2021

AbstractPracticum is one of the essential learning aspects of physics learning that is required in the 2013 curriculum. The problem of High School Physics teachers in West Aceh Regency is the limited facilities and infrastructure for the Physics laboratory. The development of Information Technology (IT) enables the Virtual Laboratory of Physics is implemented using a smartphone device. Technology transfer using IT in learning is carried out for High School Physics teachers in the West Aceh district. The method used is physics training using virtual experiments. The training participants are all High School Physics teachers in West Aceh District. The aim of the activity is to train physics teachers’ ability of IT which can be applied in learning activities at High Schools in the West Aceh district. The results of the activity were that 100% of the participants could master IT technology using a Smart Phone for a virtual practicum on Wave material. Therefore, they feel that there is an increase in their pedagogical ability in carrying out their duties and the optimists can apply this in the learning process in their place of duty. 75% of trainee teachers believe that the application of virtual practicum methods in learning can improve students’ understanding of physics subject matter; 12.5% of participants were not sure and 6.25% of participants were not sure that learning Physics using the virtual experiment method could improve students’ understanding. The benefits of the activity are expected to increase the human resources of High School Physics teachers in West Aceh district in utilizing the Virtual Laboratory so that it supports the physics learning process using practicum methods and online learning.
Analysis of Phase Change of BaTiO3 Ferroelectric Material from a Tetragonal Crystal Structure (BaTiO3) to Orthorhombic (Ba4Ti13O30) to Monoclinic (Ba6Ti17O40)
Authors: Irzaman  
Published: October 2021

Abstract
BaTiO3 ferroelectric material is very interesting to study, because BaTiO3 ferroelectric material has spontaneous polarization properties when given an electric field from outside the system. This spontaneous polarization property of BaTiO3 ferroelectric material can be applied as a light sensor (ferroelectric properties), temperature sensors (pyroelectric properties), pressure sensors (piezoelectric properties). Has successfully analyzed the phase change of BaTiO3 ferroelectric material from a tetragonal crystal structure (BaTiO3) to orthorhombic (Ba4Ti13O30) to monoclinic (Ba6Ti17O40) using the Cramer-Cohen method. This shows that the Cramer-Cohen method is very accurate in calculating the lattice constants of the crystal structure of ferroelectric materials and other materials.
Synthesis of Silicon Dioxide (SiO2) from Reeds Biomass (Imperata cylindrica) and The Analysis of Electrical Properties (Study Cases: Impedance, Resistance, Capacitive Reactance, Inductive Reactance)
Authors: Wardani D A P , Hariyanto B , Kurniawati N , Har N P , Darmawan N , Irzaman  
Published: October 2021

Abstract
Silicon dioxide (SiO2) has successfully synthesized from reeds biomass (imperata cylindrical) by annealing temperature variation at 500, 600, 700 oC. The result of the synthesis has analyzed using LCR meters to calculate the electrical properties including resistance (R), reactance (X) (delta inductive reactance (XL) and capacitive reactance (XC)), impedance (Z) in the frequency range at 50 Hz to 5 MHz. The resistance (R), reactance (X) (delta inductive reactance (XL) and capacitive reactance (XC)), impedance (Z) value according to reversible electric current rules.