bluuebunny/crossref_metadata_2025_split huggingface dataset:
Self‐biased nano‐power four‐transistor current and voltage reference with a single resistor
Authors: Aminzadeh H. 
Published: December 2019

A generic nano‐power voltage and current reference topology, which takes advantage of the unequal threshold voltage () of two MOSFETs in subthreshold region, is developed to provide reliable bias and reference signals for the analogue integrated blocks used in the Internet‐of‐Things applications. The new architecture is a self‐powered four‐transistor topology with a single temperature‐insensitive resistor, generating both temperature‐independent voltage and current without any operational amplifier or bias network. Instead, the resistor defines the absolute value of the current reference () which supplies the core devices. The circuit is designed and simulated for a target current reference of 7.50 nA in 0.18 µm CMOS process, and achieves a worst‐case temperature coefficient (TC) of 59.47 ppm/°C over a temperature range from −40 to 125°C and 1.8 V voltage supply. The average voltage reference () is 346 mV, and the worst‐case TC of different corners is 21.98 ppm/°C. The nominal current consumption is twice the (15 nA) regardless of the supply and temperature, and can be scaled down by reducing the desired current reference.
Chancen für die Adhärenz – die Patientenperspektive
Authors: Saner Jeannette 
Published: December 2019

ZusammenfassungLaut Studien liegt die Adhärenz von Patienten für Eigenübungen unter 50 Prozent. Als Therapeuten müssen wir diesem ernüchternden Ergebnis aber nicht hilflos gegenüberstehen. In Interviews geben Patienten klare Hinweise darauf, was sie in der Therapie benötigen, um auf lange Sicht die Übungen auszuführen. Wir sollten auf sie hören.
Risks of Maternal Obesity in Pregnancy: A Case-control Study in a Portuguese Obstetrical Population
Authors: Alves Patrícia , Malheiro Maria Filipa , Gomes João Cavaco , Ferraz Tiago , Montenegro Nuno 
Published: December 2019

Abstract
Objective The present study aims to understand to what extent obesity is related to adverse maternal, obstetrical, and neonatal outcomes in a Portuguese obstetrical population.
Methods A retrospective case-control study was conducted at the Department of Obstetrics of a differentiated perinatal care facility. The study compared 1,183 obese pregnant women with 5,399 normal or underweight pregnant women for the occurrence of gestational diabetes, hypertensive pregnancy disorders, and preterm birth. Mode of delivery, birthweight, and neonatal intensive care unit (ICU) admissions were also evaluated. Mean blood glucose values were evaluated and compared between groups, in the first and second trimesters of pregnancy. Only singleton pregnancies were considered.
Results The prevalence of obesity was 13.6%. Obese pregnant women were significantly more likely to have cesarean sections (adjusted odds ratio [aOR] 2.0, p < 0.001), gestational diabetes (aOR 2.14, p < 0.001), hypertensive pregnancy disorders (aOR 3.43, p < 0.001), and large-for-gestational age or macrosomic infants (aOR 2.13, p < 0.001), and less likely to have small-for-gestational age newborns (aOR 0.51, p < 0.009). No significant differences were found in terms of preterm births, fetal/neonatal deaths, low birthweight newborns, and neonatal ICU admissions among cases and controls. Maternal obesity was significantly associated with higher mean blood glucose levels, in the first and second trimesters of pregnancy.
Conclusion Obesity is associated with increased risks of adverse pregnancy and neonatal outcomes. These risks seem to increase progressively with increasing body mass index (BMI) class. Female obesity should be considered a major public health issue and has consequences on maternal-fetal health.
Predictors of In-Hospital Events for Patients with Nonischemic Acute Heart Failure
Authors: Kanumuri Sudhkar , Jonnalagadda Neeharika , Garre Indrani , Jyotsna Maddury 
Published: December 2019

Abstract
Aim The main purpose of this article is to evaluate the clinical profile and in-hospital outcome among heart failure (HF) patients due to different diseases other than acute coronary syndromes (ACS) admitted in intensive coronary care unit (ICCU) at a tertiary center in South India.
Materials and Methods This is an observational study of HF patients who were admitted to ICCU for a period of 6 months from January 2019 to June 2019. ACS patients were excluded. All the demographic data, clinical history, examination details, electrocardiographic (ECG), two-dimensional echocardiography (ECHO), baseline routine, and special investigations were collected. In-hospital progress of the patient was monitored along with events (recurrence of HF, arrhythmias, acute kidney injury, cardiogenic shock, and death).
Results The total number of patients included in the study was 130. The male:female ratio was 2.09:1(88/42) with a mean age of 53.61 years. Hypertension and diabetes were present in 52.3% (68 patients). The etiology of HF was either ischemic (51 patients—39.2%) or dilated (24 patients—18.4%) cardiomyopathy in the majority of the patients (75 patients—57.6%). Rest of the diagnosis for HF were hypertrophic cardiomyopathy in 6 (4.6%) patients, chronic rheumatic heart disease in 18 (13.8%) patients, primary pulmonary arterial hypertension in 6 (4.6%) patients, severe valvular pulmonary restenosis in 3 (2.3%) patients, Cor-pulmonale in 6 (4.6%) patients, and others in 16 (12.3%) patients. Events occurred in 17 patients (13.1%). Mortality occurred in 6 patients (4.62%). Patients with events had more severe dyspnea with pedal edema with low systolic blood pressure clinically; all patients had ECG abnormalities with more severe left ventricular (LV) dilatation with right and LV dysfunction with significant functional mitral regurgitation (MR) with more laboratory abnormalities including grossly elevated N-terminal pro B-type natriuretic peptide (NT pro-BNP) levels when compared with patients without events. All the above said parameters were statistically significant (p < 0.05).
Conclusion The common cause of HF admissions in ICCU was predominantly due to ischemic cardiomyopathy. Still, valvular heart diseases were accounting for 13.8% of admissions. High incidence of event rate (13.1%) despite the improvement in treatment strategies of ICCU patients in this new era, also the all-cause in-hospital mortality, was 4.62%. There were multiple clinical (degree of dyspnea, pedal edema, low systolic blood pressure), ECHO (LV dilatation with dysfunction, right ventricle dysfunction, significant MR), and laboratory parameters (pre-azotemia, anemia, thrombocytopenia, grossly elevated NT pro-BNP levels) to predict the in-hospital events.
Tone-induced split in stop category mapping by Korean learners of Mandarin Chinese
Authors: Lee-Kim Sang-Im 
Published: December 2019

AbstractThe present study reports a novel case where a simple one-to-one category mapping may develop into a systematic one-to-two mapping over the course of second language acquisition. We examined the split in category mapping of the Mandarin unaspirated stops conditioned by tone by Korean-speaking learners of Mandarin Chinese (e.g. Mandarin /ta35/ to Korean lenis [ta] vs. Mandarin /ta55/ to Korean fortis [t’a]). Korean L2 learners and naïve listeners participated in identification tasks in whichf0contours of Mandarin words containing unaspirated stops with short-lag VOTs were digitally manipulated. In word-initial position, learners showed a near-categorical perception from lenis to fortis asf0increased, while most stimuli were identified as fortis by naïve listeners. The effect off0was much smaller in word-medial position, but the group difference remained the same, confirming the two groups’ differential use of phonetic cues for stop identification. Taken together, a substantial reorganization of perceptual cues, namely the promotion off0concurrent with significant underweighting of VOT cues, seems to have taken place during L2 acquisition. The findings were discussed with reference to PAM-L2 whereby the knowledge of the L2 phonological system along with particular phonetic properties of the L2 sounds may have driven a perceptual regrouping of the L2 stop categories.
Inhibitory effect of isomaltodextrin on tyrosine metabolite production in rat gut microbiota
Authors: Takagaki Ryodai , Yoshizane Chiyo , Ishida Yuki , Sakurai Takeo , Taniguchi Yoshifumi , Watanabe Hikaru , Mitsuzumi Hitoshi , Ushio Shimpei , Morita Hidetoshi 
Published: December 2019

ABSTRACT
We examined the effect of isomaltodextrin (IMD), a soluble dietary fiber, on production of putrefactive products by intestinal bacteria using a tyrosine load test to measure phenol production in IMD-treated rats. We observed a significant increase in phenol and p-cresol concentrations in rats administered with only tyrosine, but not for rats co-administered tyrosine and IMD. To elucidate the mechanism of this effect, we analyzed the intestinal microbiota in each group and found that although IMD had no direct effect on the proportion of bacteria known to produce phenols, it did alter the balance of intestinal microbiota. The results suggested that changes in the intestinal microbiota composition reduced the metabolic capacity for tyrosine and in turn suppressed production of phenol or p-cresol, putrefactive products in the intestine.
Cross‐sectional associations between the diversity of sport activities and the type of low back pain in adulthood
Authors: Kaartinen Sara , Aaltonen Sari , Korhonen Tellervo , Rottensteiner Mirva , Kujala Urho M. , Kaprio Jaakko 
Published: December 2019

AbstractLeisure‐time physical activity has a complex relationship with low back pain (LBP). Thus, we aimed to investigate whether the diversity of sport activities is associated with the type of LBP. In the FinnTwin16 study, 4246 (55% females) Finnish twins at mean age 34.1 years replied to a health behaviour survey in 2010–2012. Based on the participation in different sport activities, we created two measures of diversity: quantity (i.e. the number of sport activities: 1, 2, 3, 4 and ≥5) and quality (i.e. the type of sport activity: endurance, strength, body care, etc.). Based on the frequency, duration and type of LBP, we created three groups: no history of LBP lasting more than one day, radiating LBP and non‐radiating LBP. The associations between the quantity and quality of sport activities and the type of LBP were investigated with logistic regression analyses. Participation in ≥5 sport activities associated with less radiating and non‐radiating LBP in analyses pooled across sex (odds ratio 0.46, 95% CI 0.30–0.69 and 0.66, 0.44–0.99, respectively). However, the associations attenuated after adjusting for several confounders. Participation in endurance sports was associated with less radiating (0.58, 0.43–0.76) and non‐radiating (0.60, 0.44–0.81) LBP, whereas strength sports and body care only with less radiating LBP (0.76, 0.58–1.00 and 0.26, 0.09–0.74, respectively) adjusted for all sport types. On a sport‐specific level, running and cycling were associated with less radiating and non‐radiating LBP. In adulthood, the diversity of sport activities, particularly participation in endurance sports, may be associated with less radiating and non‐radiating LBP.
Numerical and Experimental Study of Thermal Response of an Electrified Nickel Wire
Authors: Lubis N. F. , Widartiningsih P. M. , Viridi S. 
Published: December 2019

Abstract
An electrified nickel wire can produce heat. The heat is transferred to the environment around the wire radiation. However, the temperature produced by the wire will differ depending on the number of voltages supplied by the power source. Here, we do an experiment to measure the temperature of stand-up wire at each voltage of 4.5 V, 6.0 V, 7.5 V, 9.0 V, and 12 V. As a comparison, numerical measurements are done by JavaScript program. We show that the highest temperature of the wire approaches 314 K at 12 V. To equalize the temperature in both methods, the numerical scale factor of time and current in numerical measurements are changed according to the voltage. As a result, temperatures produced in both methods have minimal gap difference with error percentage below 0.5%. In conclusion, the experiment results were used to determine the scaling parameters to approach the ideal thermal response curve in actual values.
Development of The Android-Based Interactive Physics Mobile Learning Media (IPMLM) to Improve Higher Order Thinking Skills (HOTS) of Senior High School Students
Authors: Elvi Dasilva Beatrix , Suparno  
Published: December 2019

Abstract
This study aims to find out: 1) generating useful android aplication IPMLM in termodynamic material on physics, 2) examining the impact of IPMLM toward students’ higher order thinking skill (HOTS). In order to find out the answer, the researcher used research and development method in 4-D model (defining, designing, developing and disseminating). The IPMLM application was assessed by media experts and physics expert. The limited test stage was conducted in SMAN 1 Kota Kupang with 32 students of 11th grade science program. Subjects were chosen by purposive sampling technique. The extensive test stage was conducted in SMAN 2 Kota Kupang, SMAN 3 Kota Kupang and SMAN 5 Kota Kupang with 210 students of 11th grade science program. Subjects were chosen by purposive sampling technique. The research design of extensive test was pretest-posttest control group design. Data collection was done by questionnaire and test. Instrument test to measure students’ HOTS instrument was reasoning multiple choice questions. The result shows that 1) the IPMLM application was eligible to be used in physics learning about thermodynamics, 2) using IPMLM in physics learning increased effectively the capability on HOTS aspect.
Synthesis of the Cognitive Aspects’ Science Literacy and Higher Order Thinking Skills (HOTS) in Chapter Momentum and Impulse
Authors: Putranta Himawan , Supahar  
Published: December 2019

Abstract
This paper is based on the background of the problem in the form of low order thinking skills and science literacy in students. The science literacy that students have has an important role in developing higher-order thinking skills (HOTS) in solving problems in everyday life. The method used in this research is descriptive qualitative research method with literature studies in the form of primary sources (books) and secondary sources (scientific articles). The results of this study obtained a synthesis of cognitive aspects of science literacy and HOTS in momentum and impulses used as a guide in developing overall learning devices combined with physical problems that occur in real life experienced by students in a realistic manner. In addition, the synthesis of the cognitive aspects of science literacy is in the form of several important aspects, such as scientific knowledge and scientific competence. The main aspects in HOTS are discussed in the form of analysis, evaluate, and create. These aspects must be actualized by students in their lives in the present and in the future that are useful for mutual benefit.
Developing physics test instrument in the context of ocean literacy
Authors: Haryadi Santoso Purwoko , Mutmainna  
Published: December 2019

Abstract
Ocean literacy is an understanding that should be integrated into physics learning for the coastal area. Ocean issues will help students understanding physics concepts. Indonesian government through Kemendikbud and Kemenko Maritim have been developing ocean-relate learning. To support government effort improving ocean literate-education system, it needs a sustainable process. Author choose to develop physics test instrument as one step which addresses the ocean literacy to the Indonesian curriculum. This article presents task analysis of kinematics and dynamics concepts to the 7 essential principles and 24 fundamental concepts of ocean literacy. The results will be described with the matrices relating those. It will be a framework aligning 2013 curriculum to the principles of ocean literacy. Some developed item tests with ocean issues will be described in the end of section.
Developing of Bloomian HOTS Physics Test: Content and Construct Validation of The PhysTeBloHOTS
Authors: Istiyono Edi , Sunu Brams Dwandaru Wipsar , Muthmainah  
Published: December 2019

Abstract
Higher order thinking skills (HOTS) of the students in physics learning need to be assessed. There are several kinds of HOTS, one of which is Bloomian HOTS. The Bloomian HOTS Physics test for Senior High School Students called PhysTeBloHOTS has been developed to assess students’ HOTS. The purpose of this study is to prove validation of the PhysTeBloHOTS. There were two steps of validation: proving the content validity and construct validity. The content validity analysis was conducted using Aiken’s V and the analysis of construct validation was conducted using exploratory factor analysis (EFA). The PhysTeBloHOTS consisted of four test sets: A, B, C, and D. The each of test set consists of 40 items with 8 anchor items. For the test trial, PhysTeBloHOTS were administrated to 301 Senior High School Students in Yogyakarta. The result of the study shows that PhysTeBloHOTS is valid according to the content and construct validity. The PhysTeBloHOTS items are valid according to the expert judgments with Aiken’s V index ranged from 0.83 to 0.97, respectively. The result of EFA and CFA show that PhysTeBloHOTS consist of three aspects: analysis, evaluate, and create.
Analysis of Students’ Critical Thinking Skills at Junior High School in Science Learning
Authors: Febri A. , Sajidan  , Sarwanto  
Published: December 2019

Abstract
Critical thinking skills is one of students’ skills needed to face globalization in 21st century challenge. Critical thinking skills are active processes to thinking deeply due to topic or materials through meaningful way. The indicators of critical thinking skills are thinking about certain topic in depth, asking questions, and finding relevant information. This study aimed to analyze students’ critical thinking skills at junior high school in science learning. Instruments used in this study were created according to Facione indicators of critical thinking skills namely to interpret, to analyze, to evaluate, to infer, to explain, and to do self-control. Subjects in this study were 256 students of seventh grade at junior high school in Karanganyar. Purposive sampling were used as sampling technique. Results showed that two indicators have gained good category namely to analyze that was 62% and to evaluate that was 70%; while four other indicators have gained sufficient category namely to interpret that was 35%, to infer that was 49%, to explain that was 40%, and to do self-control that was 46%. The conclusion of this study was there were two indicators of students’ critical thinking skills gained good category and four indicators of students’ critical thinking skills gained sufficient category. Thus proper follow-up of this study is needed to explore ways to improve the achievements of each indicators in students’ critical thinking skills.
Analysis of Students’ Misconception Based on the Use of Learning Objectives in Classification of Materials and Their Properties
Authors: Cahyanto M. A. S. , Ashadi  , Saputro S. 
Published: December 2019

Abstract
The objectives of this study are to: (1) know the percentage of students’ misconception on materials and their properties in terms of the use of learning objectives at junior high school, (2) know the flaws of learning objectives that lead to students’ misconception and (3) be the supportive material from learning objectives. This study was carried out using descriptive-quantitative research method. The technique of collecting data was done by interview. The conclusions of this study were: (1) percentage of student’ level of understanding of classification of material and their properties was 38.43% for distinguishing elements, compounds, and mixtures indicator; 52.31% for distinguishing homogeneous and heterogeneous mixtures indicator and 48.71% for distinguishing physical or chemical changes indicator, (2) the components in the book were not complete because there was no indicator of competency achievement and (3) there is a conceptual error in writing hydrogen elements as a semilogical element, some confusing sentences lead to different interpretations and less depth in material presentation of learning objectives lead to students’ misconception as students’ concepts different from experts from material and language content.
Identification and antioxidant activity of phenolic compound from leaves of Scurrula parasitica L
Authors: Atun Sri , Nur Innayati Asri , Herlambang HW , Handayani Sri 
Published: December 2019

Abstract

Scurrula parasitica L is one of the Loranthus plant species which is an herbal plant recorded in ancient documents and widely used as traditional medicine. The purpose of this study was to identify phenolic compounds and to test the antioxidant activity of compounds from Scurrula parasitica L. leaf extract. The research method was carried out by extracting dried powder of S. parasitica leaves with ethanol. Ethanol extract was partitioned using n-hexane, chloroform, and ethyl acetate solvents respectively. The ethyl acetate fraction obtained is then concentrated to form deposits. The precipitate obtained was separated and washed using n-hexane and a mixture of ethyl acetate: acetone (1: 1) in sequence. The precipitate obtained is then purified by recrystallization with ethanol as solvent. The crystals obtained were tested for their purity by thin layer chromatography (TLC) and identified using UV-Vis, IR and NMR spectrophotometers. The method for testing antioxidant activity using 2, 2- diphenyl-1-picrylhydrazyl (DPPH). The results of spectroscopic identification showed that the isolation compound obtained was quercitrin (quercetin-3-O-rhamnoside). Quercitrin shows high antioxidant activity with IC50 5.00 μg / mL. Thus, S. parasitica plant is very potential as a source of natural antioxidants
Extraction of α-cellulose from Eleocharis dulcis Holocellulose using NaOH and KOH
Authors: Sunardi  , Istikowati W T , Sari D I 
Published: December 2019

Abstract
Cellulose is the greatest abundant and renewable biopolymer resources in world, it has been widely used in many industrial applications because of its favorable characteristics. Various cellulose resources, especially those obtained from local resources and agriculture waste, are being exploited to reduce the impact of environmental damage. This study presents an environmental friendly methods to produce cellulose from local plant, Eleocharis dulcis. E. dulcis is an aquatics plant belonging to the Cyperaceae family, mainly abundant in swampy area in South Kalimantan, Indonesia. In this study, α-cellulose were isolated from E. dulcis as a new renewable industrial resources. The sample was dewaxed using ethanol-toluene, then the free extractive sample was bleached using NaClO2 to produce holocellulose. The influence of type of alkali (NaOH and KOH) and concentration (15%; 17.5% and 20%) on the properties of α-cellulose was investigated. The Total Crystallinity Index (CrI), Lateral Order Index (LOI), Hydrogen Bond Intensity (HBI) and whiteness of α-cellulose were analysis using FTIR and CIELab color system, respectively.