bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Leptin Deficiency on the Skeletal Response to Hindlimb Unloading in Adult Male Mice
Authors: Keune Jessica A. , Branscum Adam J. , Wong Carmen P. , Iwaniec Urszula T. , Turner Russell T. 
Published: June 2019

AbstractBased on body weight, morbidly obese leptin-deficientob/obmice have less bone than expected, suggesting that leptin plays a role in the skeletal response to weight bearing. To evaluate this possibility, we compared the skeletal response of wild type (WT) andob/obmice to hindlimb unloading (HU). Mice were individually housed at 32 °C (thermoneutral) from 4 weeks of age (rapidly growing) to 16 weeks of age (approaching skeletal maturity). Mice were then randomized into one of 4 groups (n = 10/group): (1) WT control, (2) WT HU, (3)ob/obcontrol, and (4)ob/obHU and the results analyzed by 2-way ANOVA.ob/obmice pair-fed to WT mice had normal cancellous bone volume fraction (BV/TV) in distal femur, lower femur length and total bone area, mineral content (BMC) and density (BMD), and higher cancellous bone volume fraction in lumbar vertebra (LV). HU resulted in lower BMC and BMD in total femur, and lower BV/TV in distal femur and LV in both genotypes. Cancellous bone loss in femur in both genotypes was associated with increases in osteoclast-lined bone perimeter. In summary, leptin deficiency did not attenuate HU-induced osteopenia in male mice, suggesting that leptin is not required for bone loss induced by unweighting.
Tungsten Trioxide (WO3)-assisted Photocatalytic Degradation of Amoxicillin by Simulated Solar Irradiation
Authors: Nguyen Thao Thi , Nam Seong-Nam , Son Jooyoung , Oh Jeill 
Published: June 2019

AbstractThis study investigates the photocatalytic degradation of amoxicillin (AMO) by simulated solar irradiation using WO3 as a catalyst. A three-factor-three-level Box-Behnken design (BBD) consisting of 30 experimental runs is employed with three independent variables: initial AMO concentration, catalyst dosage, and pH. The experimental results are analyzed in terms of AMO degradation and mineralization, the latter of which is measured using dissolved organic carbon (DOC). The results show that the photocatalytic degradation of AMO follows pseudo-first-order kinetics. AMO degradation efficiency and the pseudo-first-order rate constants decrease with increasing initial AMO concentration and pH and increase with increasing catalyst dosage. Though AMO degradation is almost fully complete under the experimental conditions, DOC removal is much lower; the highest DOC removal rate is 35.82% after 180 min. Using these experimental results, second-order polynomial response surface models for AMO and DOC removal are constructed. In the AMO removal model, the first-order terms are the most significant contributors to the prediction, followed by the quadratic and interaction terms. Initial AMO concentration and pH have a significant negative impact on the photocatalytic degradation of AMO, while catalyst dosage has a significant positive impact. In contrast, in the DOC removal model, the quadratic terms make the most significant contribution to the prediction and the first-order terms the least. The optimal conditions for the photocatalytic degradation of AMO are found to be an initial AMO concentration of 1.0 μM, a catalyst dosage of 0.104 g/L, and a pH of 4, under which almost complete removal of AMO is achieved (99.99%).
Research on system dynamic performances of two‐/three‐level VSC–MVDC distribution systems with different capacitor arrangement schemes
Authors: Li Bin , Ye Shilei , Wen Weijie , Wang Changqi , Liu Haijin , Zhang Weixin , Li Ruisheng 
Published: June 2019

With fewer power electronic devices, the two‐/three‐level voltage source converter (VSC) is more suitable for medium‐voltage direct current (MVDC) distribution system than the modular multi‐level converter (MMC). However, two important system dynamic performances, including voltage fluctuation during a normal power change and voltage collapse during a fault, are contradictory in two existing capacitor arrangement schemes. To balance both dynamic performances, a novel capacitor arrangement scheme is proposed, with the capacitors dispersed at the source side. First, the structure and basic working principle of the proposed scheme are presented. Then, dynamic performances of two‐/three‐level VSC–MVDC system with the proposed scheme are discussed, and detailed comparisons among two existing capacitor arrangement schemes and the proposed scheme are made. In the end, simulation models of 20 kV two‐/three‐level VSC–MVDC system with the three different capacitor arrangement schemes are established in the MATLAB/Simulink platform. Simulation results have proved that in the proposed scheme, voltage fluctuation during normal power change is minimum, and voltage collapse during a short‐circuit fault is suppressed dramatically.
Analysis and experimental validation of partial shading mitigation in photovoltaic system using integrated dc–dc converter with maximum power point tracker
Authors: Ramli Mohd Zulkifli , Salam Zainal 
Published: June 2019

An integrated dc–dc converter with maximum power point tracker (IDCCM) is an electronic device that can be utilised to increase the output power of a photovoltaic generation system. Despite its potential benefits, there is an absence of a comprehensive analytical work to characterise the IDCCM performance under different partial shading conditions. Thus, this work proposes an analytical method to evaluate the system with IDCCM for different shading pattern/intensity, irradiance, and temperature. To validate the analysis, the SPV 1020 boost‐type IDCCM devices are incorporated into a 2 kWp experimental test‐rig. The performance of the IDCCM is benchmarked against the conventional system that utilises bypass diodes (alone). The results indicate that the IDCCM improves the performance of the central inverter as it ensures the latter consistently tracks the global peak. Also, it was found that that the performance of the IDCCM depends on the shading intensity: at low intensity, the IDCCM is able to extract energy from the shaded modules; however, it is ineffective at high shading intensity. Furthermore, when the shading is absent, the energy gained by the IDCCM is offset by the continuous power losses due to its internal operations.
Fitting B/C cosmic-ray data in the AMS-02 era: a cookbook
Authors: Derome L. , Maurin D. , Salati P. , Boudaud M. , Génolini Y. , Kunzé P. 
Published: June 2019

Context. AMS-02 on the International Space Station has been releasing data of unprecedented accuracy. This poses new challenges for their interpretation.
Aims. We refine the methodology to get a statistically sound determination of the cosmic-ray propagation parameters. We inspect the numerical precision of the model calculation, nuclear cross-section uncertainties, and energy correlations in data systematic errors.
Methods. We used the 1D diffusion model in USINE. Our χ2 analysis includes a covariance matrix of errors for AMS-02 systematics and nuisance parameters to account for cross-section uncertainties. Mock data were used to validate some of our choices.
Results. We show that any mis-modelling of nuclear cross-section values or the energy correlation length of the covariance matrix of errors biases the analysis. It also makes good models (χmin2/d.o.f. ≈ 1) appear as excluded (χmin2/d.o.f. ≫ 1). We provide a framework to mitigate these effects (AMS-02 data are interpreted in a companion paper).
Conclusion. New production cross-section data and the publication by the AMS-02 collaboration of a covariance matrix of errors for each data set would be an important step towards an unbiased view of cosmic-ray propagation in the Galaxy.
Factors Associated with Intrapartum Cesarean Section in Women Submitted to Labor Induction
Authors: Pfützenreuter Glaucia Regina , Cavalieri Juliana Coutinho , Fragoso Ana Paula de Oliveira , Da Corregio Karine Souza , Freitas Paulo Fontoura , Trapani Alberto 
Published: June 2019

Objective To evaluate the results of induced labor and to determine the main factors associated with intrapartum cesarean section after patients being submitted to this procedure at the Hospital Universitário of the Universidade Federal de Santa Catarina (HU/UFSC, in the Portuguese acronym), Florianópolis, state of Santa Catarina, Brazil.
Methods A retrospective cross-sectional study that included all the pregnancies that resulted in single-fetus births, whose gestational-age was > 22 weeks and that had been submitted to labor induction at the HU/UFSC in the period from 2013 to 2016.
Results During the proposed period, 1,491 pregnant women were submitted to the labor induction protocol. In 1,264 cases (84.8%), induction resulted in labor, with 830 (65.7%) progressing to vaginal delivery. Gestational age ≥ 41 + 0 weeks was the most common indication for induced labor (55.2%), and vaginal administration of misoprostol was the most commonly used method (72.0%). Among these pregnant women, the cesarean section rate was of 34.3%. Considering the cases of induction failure, the cesarean section rate rose to 44.3%. The factors associated with cesarean section were: previous history of cesarean delivery (PR [prevalence ratio] = 1.48; 95%CI [confidence interval]: 1.51–1.88), fetuses with intrauterine growth restriction (IUGR) (PR = 1.82; 95%CI: 1.32–2.19), Bishop score ≤ 6 (PR = 1.33; 95%CI: 1.01–1.82), and induction time either < 12 hours (PR = 1.44; 95%CI: 1.17–1.66) or > 36 hours (PR = 1.51; 95%CI 1.22–1.92) between the beginning of the induction and the birth.
Conclusion Labor induction was successful in most patients. In the cases in which the final outcome was a cesarean section, the most strongly associated factors were: previous history of cesarean delivery, presence of fetuses with IUGR, and either excessively short or excessively long periods of induction.
Endometrial Tuberculosis: Hysteroscopic Findings of a Clinical Case
Authors: Prado Daniela Siqueira , Cardoso Lucas Félix , de Maria Raimundo Dantas , de Santana Guilherme Machado , Marcelo Israel Santos , Lima Marcela Sampaio , Silva Ângela Maria 
Published: June 2019

AbstractEndometrial tuberculosis is a rare diagnosis in the postmenopausal period, and it can mimic a carcinoma. The present article describes the case of a 54-year-old female patient with weight loss, abdominal pain, and ascites. An ultrasonography showed endometrial thickening, and a video hysteroscopy revealed a uterine cavity with formations with cotton aspect covering the entire endometrial surface and the tubal ostia. An anatomopathological evaluation diagnosed endometrial tuberculosis. The treatment was with a standardized therapeutic scheme (ethambutol, isoniazid, pyrazinamide and rifampicin), and the patient evolved with clinical improvement and normal uterine cavity at hysteroscopy. Considering the lack of pathognomonic hysteroscopic findings of the disorder, it is important to disclose the images of the case.
The Effect of Multiple Intelligence-based Learning Strategies, Mathematical Logic and Naturalist toward Cognitive Learning Outcomes and Biological Retention of Students Grade X on Environmental Pollution Material
Authors: Diana Diah Mustika , Paidi  
Published: June 2019

Abstract
This study has purposes to: (1) determine the effect of learning strategies Logical-Mathematical (LM) on the learning outcomes and retention of students, (2) determine the effect of learning strategies of Naturalist (N) on the learning outcomes and retention of students, (3) determine the effect of the combination of learning strategies of Logical-Mathematical and naturalist on the learning outcomes and the retention of students. This study was a quasi-experimental research. The population in this study were all students of grade X SMA 6 Yogyakarta. The instrument used to collect the data was in the form of a multiple choice test to determine the mathematical and essay to determine the naturalist ability of students. Tests on the effect of learning strategies based Intelligence multiple logical mathematical and naturalist was conducted by using One Way Anova. The results of this study indicated that (1) The learning strategy of LM has an effect on the learning outcomes and retention of students, (2) learning strategies of N has an effect on the learning outcomes and has no effect on the retention of students, (3) the combination of learning strategies of LM and N did not affect the learning outcome of students but the has an affect on the retention of students.
The High School Biology Teachers Knowledge in Palu City to Framework the Technological Pedagogical and Content Knowledge
Authors: Setyorini Dwi , Astija  , Kasim A. 
Published: June 2019

Abstract
The knowledge of biology teachers for gathering the technology in learning is still lacking although supported by existing means. It is necessary first the data about the basic ability of teachers about framework TPACK by maximizing of using available technology that have been owned each schools. This study describes the knowledge of all biology teachers High School in Palu city for gathering framework TPACK. The method study was descriptive exploratory. Population of the study was all biology teachers of state high school in Palu city as many as 30 people, so the study were not used sampling. Data collecting by using questionnaire that afterwards analyzed by percentage with Likert Scale. In this research analyze 8 items that is TK (Technology Knowledge), CK (Content Knowledge), PK (Pedagogical Knowledge), PCK (Pedagogical Content Knowledge), TCK (Technological Content Knowledge, TPK (Technological Pedagogical Knowledge) and TPACK (Technological Pedagogical and Content Knowledge). The results of analysis obtained 77.54%, it means knowledge of biology teachers in gathering TPACK frame-teaching in high school in Palu city in good category.
Measuring Students’ Chemistry Literacy Ability of Acid and Base Concepts
Authors: Nurisa Ima , Arty Indyah Sulistyo 
Published: June 2019

Abstract
The goal of this study was to investigate Students’ levels of chemistry literacy ability on acid and base concepts. A quantitative descriptive method was used for this study. The subject of this study consisted of 251 second-year high school students in Yogyakarta. The data were collected by a test to measure chemistry contexts, chemistry knowledge, and chemistry competency aspects, and a questionnaire to measure attitude aspect that was developed in previous study. The students’ level of chemistry literacy for the aspects were in moderate level. Therefore, some sub aspects had a low and very low category, it might be caused by the lack of teachers’ ability to applied learning strategy for developing students’ chemistry literacy ability.
Investigating the Competencies of Technological Pedagogical Content Knowledge and Self-Efficacy of Chemistry Teachers
Authors: Bahriah Evi Sapinatul , Yunita L. 
Published: June 2019

Abstract
Technological Pedagogical Content Knowledge (TPACK) is an integration knowledge between technology, content of learning, and pedagogy which obtain to an integrated learning based on computer technology. Moreover, the pre-service teachers have a strengthen competencies of teachers integrating to knowledge, pedagogic, and technology. This research is aimed to investigate the Technological Pedagogical Content Knowledge competencies related to self-efficacy of chemistry teachers in Serang regency, Banten, Indonesia. Furthermore, the writers use a descriptive analysis as the research methodology. The sample of this research involves sixty-one chemistry teachers in the Senior High School level located at Serang city and Serang regency. To analyze the data, the writers provide a Likert scale. The result showed that the TPACK competencies scores in both Serang city and Serang regency raise up to 76.2 and 77.9 representatively. Whereas, the self-efficacy score in the two regions proved into 77.0 and 79.1 chronologically. Based on the data showed, it can be concluded that the relationship between TPACK and self-efficacy cannot be separated one another. Therefore, the Technological Pedagogical Content Knowledge (TPACK) and selfefficacy of the Chemistry teachers are comparable to the competencies of the Chemistry teachers.
The Analysis of Analogy use in Chemistry Teaching
Authors: Riskiani Yustika Rahayu Rr. , Sutrisno Hari 
Published: June 2019

Abstract
This study identifies students’ knowledge about analogies and to explore the potential analogies in chemistry learning. Some issues related to the use of analogies in teaching and learning are discussed. In this study, data were collected from recordings, and interviews. In the interviews, student answered question about chemistry concepts and analogies generally. In addition, the interview revealed that students liked the use of analogies in their classes and believed that they had a positive effect on their understanding of new concepts. According to them, a good analogy is an object or event that is in the natural surroundings, because it will be easier to remember. We present suggestions for improving classroom analogy use
The Implementation of Problem-based Learning Model with Online Simulation to Enhance the Student’s Analytical Thinking Skill in Learning Physics
Authors: Sari Ratna , Perdana R , Riwayani  , Jumadi  , Wilujeng Insih , Kuswanto Heru 
Published: June 2019

Abstract
The aim of this research is to enhance the student’s analytical thinking skill through the implementation of problem-based learning model with online simulation on optical devices subject, especially on a discussion about the eyes. The type of this research is a pre-experimental study. The research design is one group pre-test post-test design. The students who participated in this research were the students of class XI MIPA 4 in SMA Negeri 1 Prambanan Sleman Yogyakarta, Indonesia. The number of sample are 27 students. The sample is taken by using cluster random sampling technique. The test is an essay test about the eyes. The test is validated by expert’s judgement. The results of the test validity are valid and feasible to use. The test is used in pre-test and post-test. The result is problem-based learning model with online simulation can enhance the student’s analytical thinking skill, but the enhancement is in the low category.
The Effect of PjBL Model based on Skill Approach Process to Physics Critical Thinking Ability of High School Student
Authors: Rahim Azhar Chaeruddin , Jumadi  , Wilujeng Insih , Kuswanto Heru 
Published: June 2019

Abstract
This study was aimed at describing and determining the level of critical thinking skills of students using learning tools with a project based learning model based on material process skills approach to momentum and impulse in class X.4 (Modeling) and X.2 (Implementation) SMAN 1 Kalasang, Indonesia. This research was a Pre-Experiment Design research using the One-Shot Case Study Design research design. Research subjects were 48 students which obtained based on purposive sampling by looking at certain criteria and reasons. The results of the research data were obtained through critical thinking ability test instruments, learning device planning instruments, student worksheet instruments, and valid product assessment instruments, and instrument validation. Data collection techniques consisted of the preparation stage, implementation phase, and data collection stage. Data analysis techniques used were descriptive analysis and inferential analysis. The results showed that students’ critical thinking skills using learning tools with a project based learning model based on material process skills approach to the momentum and impulse of SMAN 1 Kalasang were in the good category (Modeling class with an average value of 75.20 and an Implementation class with an average value of 77.39). And there was increase in critical thinking skills after using learning tools with a project based learning model based on the process skills approach to material momentum and impulse of SMAN 1 Kalasang in the Modeling class as well as in the Implementation class.
Implementation of Problem Based Learning Model Assisted Edmodo to Measure Students Scientific Communication Skills
Authors: Afriani Devi , Wilujeng Insih , Jumadi  , Kuswanto Heru 
Published: June 2019

Abstract
This study aims to determine the scientific communication skills of students of SMA 6 Yogyakarta through learning Problem Based Learning assisted Edmodo. The sampling technique is through cluster random sampling, that is 2 classes randomly selected from the entire population, class X MIPA 6 as experiment classes and class X MIPA 8 as an implementation class using the same learning. Experiment classes given by the researchers themselves while the implementation class given by the subject teacher of physics at school. Each class was given learning one and the result is known that scientific communication skills of learners in experiment classes get good enough category and scientific communication skills of learners in the implementation class to get a good category.
Development of Android Comics media on Thermodynamic Experiment to Map the Science Process Skill for Senior High School
Authors: Sari Fita Permata , Ratnaningtyas L. , Wilujeng Insih , Jumadi  , Kuswanto Heru 
Published: June 2019

Abstract
Technological development influences smartphone addiction. Low academic achievement has a negative influence on school life. Comics include media that are often used in everyday life and as entertainment facilities. Comics are not only functioned as entertainment tools, but are also used in education. Physics laboratories are still minimally utilized by physics teachers in schools, so students’ science process skills are still lacking. The purpose of this study was to measure science process skills using Android-based physics comics on thermodynamic practicums. Development models used, namely R & D of Borg and Gall. Learning is done in the form of practicum on thermodynamic material. Android media use is used to measure science process skills. Physics learning innovation is applied in the XI science class of one of the senior high schools in Sleman, Yogyakarta, Indonesia. Data obtained from observation sheets of science process skills from modelling and implementation classes are very good; good; and enough. The results revealed that the application of Android comic media on thermodynamic experiment could map the science process skills of senior high school.
The Effect of Web-Assisted Problem Based Learning Model Towards Physics Problem Solving Ability of Class X Students
Authors: Apriliasari Rizky Nur , Jumadi  , Wilujeng Insih , Kuswanto Heru 
Published: June 2019

Abstract
This research aimed to determine the effect of web-assisted PBL model towards problem solving ability of class X students. This research was an experiment research or experiment study on two sample groups namely the experiment group and the control group. The research design was True Experimental with the Post-Test-Only Control Design form. This experiment research was conducted in class X MIA of SMAN 2 Yogyakarta. The samples used in this study were 30 students of class X MIA 8 as the experiment group and 30 students of class X MIA 9 as the control group. Based on the results of the Independent Sample T-Test, the two sample groups seen from Sig. (2-tailed) were worth 0.000 < 0.05, so H
0 was rejected and H
1 was accepted. The results of the effect test were calculated using Cohen’d Effect Size to determine the magnitude of the problem solving ability effect between the experiment class and the control class. The study was concluded that the web-assisted problem based learning model had a huge effect on the problem solving ability of class X students.