bluuebunny/crossref_metadata_2025_split huggingface dataset:
FAKTOR-FAKTOR YANG MEMPENGARUHI PENDAPATAN PEDAGANG SAYUR KELILING DI KOTA BOGOR
Authors: Wardhani Yustiana , Prasetya Syarief Gerald , Ari Dharmantyo Dimas 
Published: April 2020

Abstrak - Tujuan penelitian adalah mengkaji hubungan tingkat pendapatan dengan jam kerja dan mengetahui pengaruh umur, masa kerja dan jumlah tanggungan keluarga terhadap jam kerja. Metode penelitian yang digunakan adalah metode survey , objek dalam penelitian ini pedagang sayur keliling dengan jumlah sampel 60 orang. Teknik analisis data tabulasi silang. Berdasarkan hasil penelitian ditemukan bahwa jam kerja memiliki hubungan positif signifikan dengan pendapatan kotor dan pendapatan bersih pedagang sayur keliling. Kemudian diperoleh pula bahwa usia, masa kerja dan tanggungan keluarga berpengaruh signifikan terhadap jam kerja pedagang sayur keliling. Saran yang peneliti berikan antara lain sebaiknya pedagang sayur keliling dapat memanfaatkan waktu kerja seefektif mungkin, perlunya Pemerintah Daerah Kota Bogor mengambil kebijakan yang berkaitan dengan peningkatan kesejahteraan pedagang sayur keliling dan perlunya melakukan penelitian yang lebih mendalam lagi tentang faktor-faktor yang mempengaruhi pendapatan dan jam kerja.
Abstract - The purpose of this study was to examine the relationship between the level of income and the hours of traveling vegetable traders and the influence of age, years of service and the number of family dependents on the hours of traveling vegetable traders. The research method used was a survey method with cross tabulation data analysis techniques. Based on the results of the study found that working hours have a significant positive relationship with gross income and net income of traveling vegetable traders. Then it was also found that age, years of service and family dependents significantly affected the hours of the traveling vegetable traders. Suggestions given by researchers include among others that itinerant vegetable traders can utilize work time as effectively as possible, the need for the Bogor City Government to adopt policies related to improving the welfare of mobile vegetable traders and the need to conduct more in-depth research on the factors that affect income and working hours.
Correlation between BCG Immunization Status and The Incidence of Tuberculosis among Children
Authors: Nisa Annisa , Hamdanah Ulfa , Ariyani Anita Dwi 
Published: April 2020

Introduction: A children tend to have a high risk on the tuberculosis (TB) infection. BCG immunization is well known as effective way to protect the children from the infection of TB bacteria. Therefore, the study aim was to investigate a correlation between BCG immunization status and the incidence of tuberculosis among children.
Methods: A retrospective case-control study design was used. In total 34 children, whose aged between 1 to 12 years old and visited Wonorejo Primary Health Center between September, 12nd to 16th 2019 recruited as study participant. The Chi-square test was used in this study.
Results: There was a significant correlation between BCG immunization status and the incidence of tuberculosis among children with P value = .008, < .05.
Conclusion: Among five from six children who did not received the BCG immunization were suffered with TB bacteria infection.
EFEKTIVITAS TUTORIAL PENYELESAIAN SOAL UJIAN NASIONAL TERHADAP HASIL UJIAN NASIONAL MATEMATIKA
Authors: Fedi Sebastianus , Kurnila Valeria Suryani 
Published: April 2020

Penelitian ini bertujuan untuk mengetahui efektifitas bimbingan persiapan UN terhadap hasil UN matematika di SMP Bintang Timur Ruteng. Penelitian ini merupakan penelitian kuantitatif dengan desain eksperimen pada sampel tunggal. Populasi penelitian adalah 32 siswa peserta UN asal SMP Swasta Bintang Timur, tahun ajaran 2017/2018. Sampling bersifat jenuh, di mana seluruh 32 anggota populasi dilibatkan sebagai sampel. Hipotesis penelitian diuji dengan uji , di mana vs Nilai adalah nilai rataan UN matematika SMP Swasta Bintang Timur tahun ajaran 2016/2017, dengan varians 53,67; yang dipakai sebagai nilai acuan untuk membandingkan efek bimbingan khusus UN terhadap hasil UN tahun berikutnya, yaitu tahun 2017/2018. Hasil penelitian menunjukkan bahwa nilai rataan UN tahun 2017/2018 adalah 50,39 dengan varians 234,42. Diperoleh statistik sedangkan . Sehingga ditolak, tetapi diterima. Artinya, ada pengaruh positif dan sangat signifikan bimbingan khusus terhadap hasil UN matematika. Dalam hal ini, bimbingan khusus penyelesaian soal UN efektif meningkatkan hasil UN matematika di SMP Bintang Timur Ruteng.
Polarization Constraints on the Geometry of the Magnetic Field in the External Shock of Gamma-Ray Bursts
Authors: Stringer Eric , Lazzati Davide 
Published: April 2020

Abstract
We study the ensemble of linear polarization measurements in the optical afterglows of long-duration gamma-ray bursts. We assume a non-sideways-expanding top-hat jet geometry and use the relatively large number of measurements under the assumption that they represent a statistically unbiased sample. This allows us to constrain the ratio between the maximum predicted polarization and the measured one, which is an indicator of the geometry of the magnetic field in the downstream region of the external shock. We find that the measured polarization is substantially suppressed with respect to the maximum possible for either a completely ordered magnetic field parallel to the shock normal or to a field that is entirely contained in the shock plane. The measured polarization is limited, on average, to between 25% and 30% of the maximum theoretically possible value. This reduction requires the perpendicular component of the magnetic field to be dominant in energy with respect to the component parallel to the shock front, as expected for a shock-generated and/or shock-compressed field. We find, however, that the data only marginally support the assumption of a simple top-hat jet, pointing toward a more complex geometry for the outflow.
Formation of Post-CME Blobs Observed by LASCO-C2 and K-Cor on 2017 September 10
Authors: Lee Jae-Ok , Cho Kyung-Suk , Lee Kyoung-Sun , Cho Il-Hyun , Lee Junggi , Miyashita Yukinaga , Kim Yeon-Han , Kim Rok-Soon , Jang Soojeong 
Published: April 2020

Abstract
Understanding the formation of post-CME blobs, we investigate 2 blobs in the outer corona observed by LASCO-C2 and 34 blobs in the inner corona by K-Cor on 2017 September 10 from 17:11 to 18:58 UT. By visual inspection of the structure of a post-CME current sheet (CS) and its associated blobs, we find that the CS is well identified in the K-Cor and its radial lengths are nine times longer than lateral widths, indicating the CS is unstable to the linear tearing mode. The inner corona blobs can be classified into two groups: 27 blobs generated in the middle of the CS (Group 1) and 7 blobs occurred above the tips of it (Group 2). Their lateral widths are

and

, which is smaller than, or similar to, those

of the CS. They have elongated shapes: ratios of lateral to radial widths are

and

, respectively. In the first group, only three blobs propagate above the tip of the CS while the others are located in the CS. In the second group, only two blobs have associations with those of outer corona in their temporal and spatial relationship and their initial heights are 1.81 and 1.95 R
☉, measured from the center of the Sun. The others cannot be identified in the outer corona. Our results first demonstrate that LASCO-C2 blobs could be generated by the tearing mode instability near the tips of post-CME CSs, similar to the magnetic reconnection process in the tail CS of Earth's magnetosphere.
Distortion of Magnetic Fields in BHR 71
Authors: Kandori Ryo , Tamura Motohide , Saito Masao , Tomisaka Kohji , Matsumoto Tomoaki , Tazaki Ryo , Nagata Tetsuya , Kusakabe Nobuhiko , Nakajima Yasushi , Kwon Jungmi , Nagayama Takahiro , Tatematsu Ken’ichi 
Published: April 2020

Abstract
The magnetic field structure of a star-forming Bok globule BHR 71 was determined based on near-infrared polarimetric observations of background stars. The magnetic field in BHR 71 was mapped from 25 stars. By using a simple 2D parabolic function, the plane-of-sky magnetic axis of the core was found to be θ
mag = 125° ± 11°. The plane-of-sky mean magnetic field strength of BHR 71 was found to be B
pos = 8.8–15.0 μG, indicating that the BHR 71 core is magnetically supercritical with λ = 1.44–2.43. Taking into account the effect of thermal/turbulent pressure and the plane-of-sky magnetic field component, the critical mass of BHR 71 was M
cr = 14.5–18.7 M
⊙, which is consistent with the observed core mass of M
core ≈ 14.7 M
⊙. We conclude that BHR 71 is in a condition close to a kinematically critical state, and the magnetic field direction lies close to the plane of sky. Since BHR 71 is a star-forming core, a significantly subcritical condition (i.e., the magnetic field direction deviating from the plane of sky) is unlikely, and collapsed from a condition close to a kinematically critical state. There are two possible scenarios to explain the curved magnetic fields of BHR 71, one is an hourglass-like field structure due to mass accumulation and the other is the Inoue & Fukui mechanism, which proposes the interaction of the core with a shock wave to create curved magnetic fields wrapping around the core.
Exploratory Surveys of Migratory Birds Breeding in the Western and Central Canadian Arctic 2005–2011
Authors: Garrettson Pamela R. , Kruse Kammie L. , Moser Timothy J. , Groves Deborah J. 
Published: April 2020

AbstractThe Canadian Arctic and subarctic are the primary breeding areas of many species of North American water and land birds. Because of the remote location and the logistical difficulties of working there, wildlife biologists have not systematically surveyed most important areas for wildlife, nor have they surveyed these areas very frequently. During the summers of 2005–2011, various Joint Ventures, and U.S., Canadian, and state wildlife agencies and other partners funded exploratory fixed-wing aircraft surveys of migratory birds (excluding passerines and shorebirds) in important habitats in Canada's western and central Arctic. Our objectives were to provide access to the complete survey dataset (all bird and mammal observations and associated location data) and summarize information on several species. Thus, we produced maps of average relative density and estimates of abundance in the survey area for cackling geese Branta hutchinsii, greater white-fronted geese Anser albifrons, tundra swans Cygnus columbianus, king eiders Somateria spectabilis, long-tailed ducks Clangula hyemalis, white-winged Melanitta fusca and surf Melanitta perspicillatas scoters, and yellow-billed Gavia adamsii, red-throated Gavia stellata, and Pacific Gavia pacifica loons. We reviewed previous survey efforts in the area and, where possible, compared them with our results.
DEFORMATION INDEX APPLIED TO IMPACT
Authors: Ransom T. C. , Gamache R. M. , Mason B. P. , Ladouceur H. D. , Roland C. M. 
Published: April 2020

ABSTRACT
Almost three decades ago, S. Futamura devised the deformation index concept for determining the control parameter for the viscoelastic response of deformed elastomers. We have extended this concept to impact mitigation, wherein material hardness and energy dissipation typically both affect the behavior. Laboratory impact tests were carried out on a series of compounds to deduce the deformation index pertinent to the rubber component. We then analyzed ballistic experiments, wherein material failure is associated with more complex conditions. The utility and limitations of this approach are discussed.
Representar el texto teatral: director/académico
Authors: Benabu Isaac 
Published: April 2020

Abstract
Leer una obra de teatro para llegar a comprender las claves dramáticas que la definen como tal requiere un tipo de lectura, sea en el teatro que en la universidad, que dé a la palabra enunciada un valor que la palabra escrita no logra comunicar. La aproximación recomendada en este artículo se basa sobre la lectura teatral, es decir la lectura que se realiza generalmente al ensayar una obra para representarla sobre las tablas; no se refiere aquí a la lectura del director, sino a una lectura que desentrañe del texto escrito o impreso el uso que el dramaturgo ha hecho de la palabra para codificar su visualización de cómo ha de realizarse la representación de su texto.
Review of Emerging Potassium–Sulfur Batteries
Authors: Ding Jia , Zhang Hao , Fan Wenjie , Zhong Cheng , Hu Wenbin , Mitlin David 
Published: April 2020

AbstractThis is the first review on potassium–sulfur (K–S) batteries (KSBs), which are emerging metal battery (MB) systems. Since KSBs are quite new, there are fundamental questions regarding the electrochemistry of S‐based cathode and of K metal anode, as well as the holistic aspects of full‐cell performance. The manuscript begins with a critical discussion regarding the potassium–sulfur electrochemistry and on how it differs from the much better‐known lithium–sulfur. Cathodes are discussed next, focusing on the role of sulfur structure, carbon host chemistry and porosity, and electrolytes in establishing the reversible potassium sulfide K2Sn phase sequence, the parasitic polysulfide shuttle, pulverization‐driven capacity fade, etc. Following is a discussion of solid‐state electrolytes (SSEs), including of hybrid solid–liquid systems that show much promise. Potassium metal anodes are then critically reviewed, emphasizing electrolyte reactions to form stable versus unstable solid electrolyte interphase (SEI), covering the current understanding of potassium dendrites, and highlighting the deep‐eutectic K–Na alloying approaches for room temperature liquid anodes. The manuscript concludes with K–S batteries, focusing on cell architectures and providing quantitative performance comparisons as master plots. Unanswered scientific/technological questions are identified, emerging research opportunities are discussed, and potential experimental and simulation‐based studies that can unravel these unknowns are proposed.
Flexible Temperature‐Invariant Polymer Dielectrics with Large Bandgap
Authors: Wu Chao , Deshmukh Ajinkya A. , Li Zongze , Chen Lihua , Alamri Abdullah , Wang Yifei , Ramprasad Rampi , Sotzing Gregory A. , Cao Yang 
Published: April 2020

AbstractFlexible dielectrics operable under simultaneous electric and thermal extremes are critical to advanced electronics for ultrahigh densities and/or harsh conditions. However, conventional high‐performance polymer dielectrics generally have conjugated aromatic backbones, leading to limited bandgaps and hence high conduction loss and poor energy densities, especially at elevated temperatures. A polyoxafluoronorbornene is reported, which has a key design feature in that it is a polyolefin consisting of repeating units of fairly rigid fused bicyclic structures and alkenes separated by freely rotating single bonds, endowing it with a large bandgap of ≈5 eV and flexibility, while being temperature‐invariantly stable over −160 to 160 °C. At 150 °C, the polyoxafluoronorbornene exhibits an electrical conductivity two orders of magnitude lower than the best commercial high‐temperature polymers, and features an unprecedented discharged energy density of 5.7 J cm−3 far outperforming the best reported flexible dielectrics. The design strategy uncovered in this work reveals a hitherto unexplored space for the design of scalable and efficient polymer dielectrics for electrical power and electronic systems under concurrent harsh electrical and thermal conditions.
On‐Chip Measurement of Photoluminescence with High Sensitivity Monolithic Spectrometer
Authors: Zheng Binjie , Li Lingfei , Wang Junzhuan , Zhuge Minghua , Su Xin , Xu Yang , Yang Qing , Shi Yi , Wang Xiaomu 
Published: April 2020

AbstractMonolithic spectrometer is exceptionally attractive to enable compact, low‐cost spectroscopy for portable sensing and lab‐on‐a‐chip functionality. Unfortunately, simple down‐scaling of the microspectrometer size to the chip‐scale severely weakens light–matter interactions and degrades the sensor performance to unacceptable level. Unlike other state‐of‐the‐art miniature spectral splitting filters or photonic structures, bandgap‐graded nanowire strongly enhances the light‐matter interaction, which is a highly demanded yet unfulfilled feature for high‐precision on‐chip sensing. Here, on‐chip measurement of photoluminescence by a monolithic spectrometer made of a single composition‐graded CdSxSe1–x nanowire is reported. The nanowire is engineered to a waveguide‐mode‐operated, dispersive photodiode array. It works as a monolithic spectrometer chip with strong light–matter interaction and superior noise figure. On‐chip measurement of single‐point photoluminescence signals with 1013 Jones room‐temperature detectivity and 5 nm spectral resolution is illustrated. This demonstration of a compact, low‐cost, and high‐performance miniature spectrometer marks a major step towards on‐chip spectroscopy for fine resolution and sensitive detection.
Near Neutral pH Redox Flow Battery with Low Permeability and Long‐Lifetime Phosphonated Viologen Active Species
Authors: Jin Shijian , Fell Eric M. , Vina‐Lopez Lucia , Jing Yan , Michalak P. Winston , Gordon Roy G. , Aziz Michael J. 
Published: April 2020

AbstractA highly stable phosphonate‐functionalized viologen is introduced as the redox‐active material in a negative potential electrolyte for aqueous redox flow batteries (ARFBs) operating at nearly neutral pH. The solubility is 1.23 m and the reduction potential is the lowest of any substituted viologen utilized in a flow battery, reaching −0.462 V versus SHE at pH = 9. The negative charges in both the oxidized and the reduced states of 1,1′‐bis(3‐phosphonopropyl)‐[4,4′‐bipyridine]‐1,1′‐diium dibromide (BPP−Vi) effect low permeability in cation exchange membranes and suppress a bimolecular mechanism of viologen decomposition. A flow battery pairing BPP−Vi with a ferrocyanide‐based positive potential electrolyte across an inexpensive, non‐fluorinated cation exchange membrane at pH = 9 exhibits an open‐circuit voltage of 0.9 V and a capacity fade rate of 0.016% per day or 0.00069% per cycle. Overcharging leads to viologen decomposition, causing irreversible capacity fade. This work introduces extremely stable, extremely low‐permeating and low reduction potential redox active materials into near neutral ARFBs.
Carbon‐Microcuboid‐Supported Phosphorus‐Coordinated Single Atomic Copper with Ultrahigh Content and Its Abnormal Modification to Na Storage Behaviors
Authors: Li Yifan , Kong Minhong , Hu Junping , Zhou Jisheng 
Published: April 2020

AbstractCarbon‐supported single atomic metals (SAMs) have aroused great interest in energy conversion and storage fields. However, metal content has to date, been far below expectation. Additionally, theoretical calculations show that SAMs are superb anchoring sites for alkali metal‐ion storage, but the experimental research remains untouched. Herein, a metal–organophosphine framework derived strategy is proposed to prepare carbon microcuboids‐supported single atomic Cu with a high content of 26.3 wt%. Atomic Cu is stabilized mainly by P moieties, exhibiting robust stability even in concentrated HCl and HNO3. Interestingly, experimental investigations and first‐principle calculations indicate that Cu atoms can alter the Na storage behavior and enable Na to maintain an ionic state at a fully discharging state for sodium‐ion batteries, which may be a new pathway to mitigate safety concerns of dendrite formation. The Cu atoms also enhance electron transfer and diffusion kinetics. As a result, the carbon cuboids can deliver a high capacity of 107.7 mAh g−1 at 5 A g−1 and show a long life of 1000 cycles for Na storage. This strategy offers a new possibility for fabricating high‐content P‐coordinated atomic metals for energy conversion and storage.
Recessive congenital myasthenic syndrome caused by a homozygous mutation in SYT2 altering a highly conserved C‐terminal amino acid sequence
Authors: Maselli Ricardo A. , van der Linden Hélio , Ferns Michael 
Published: April 2020

AbstractDefects in the gene encoding synaptotagmin 2 (SYT2) have been linked to a presynaptic congenital myasthenic syndrome (CMS) and motor neuropathies. However, to date only dominant forms of the disease have been described. We report here a consanguineous patient with a severe recessive form of presynaptic CMS and denervation atrophy caused by the homozygous mutation c.1191delG, p.Arg397Serfs*37 in SYT2. The affected 2‐year‐old girl had profound weakness and areflexia with moderate bulbar deficit. Repetitive nerve stimulation revealed an extreme reduction of compound muscle action potential amplitudes at rest, with a striking facilitation followed by a progressive decline at fast stimulation rates. These findings were reminiscent, but not identical to those seen in the Lambert–Eaton myasthenic syndrome. 3,4 diaminopyridine and pyridostigmine were effective to ameliorate muscle fatigue, but albuterol was ineffective. Modeling of the mutation using the rat Syt1 C2B x‐ray structure revealed that Arg397Serfs*37 disrupts a highly conserved amino acid sequence at the bottom face of the C2B domain not directly involved in calcium binding, but crucial for synaptotagmin‐SNARE interaction and exocytosis. Thus, this report describes a recessive form of synaptotagmin 2‐CMS and highlights the importance of the synaptotagmin C‐terminal on synaptic vesicle fusion and exocytosis.
N‐Heterocyclic Carbene Copper(I) Rotaxanes Mediate Sequential Click Ligations with All Reagents Premixed
Authors: Hsueh Fang‐Che , Tsai Chi‐You , Lai Chien‐Chen , Liu Yi‐Hung , Peng Shie‐Ming , Chiu Sheng‐Hsien 
Published: April 2020

AbstractWe have prepared NHC‐CuIcomplexes with a rotaxane structure and used them as sterically sensitive catalysts for one‐pot sequential copper‐catalyzed azide/alkyne cycloadditions in solutions containing all of the coupling partners premixed in unprotected form. Most notably, a photolabile and sterically encumbered complex first catalyzed the coupling of a less bulky azide/alkyne pair; after removing the protective macrocyclic component from the rotaxane structure, through irradiation with light, the exposed dumbbell‐shaped NHC‐CuIcomplex catalyzed the second click reaction of a bulkier azide/alkyne pair. Using this approach, we obtained predominantly, from a single sealed pot, a bis‐triazole product (84 %) from a mixture of two sterically distinct azides and a diyne.
Biocompatible polymeric electrospun matrices: Micro–nanotopography effect on cell behavior
Authors: Pisani Silvia , Genta Ida , Dorati Rossella , Kavatzikidou Paraskevi , Angelaki Despoina , Manousaki Aleka , Karali Kanelina , Ranella Anthi , Stratakis Emmanuel , Conti Bice 
Published: April 2020

AbstractThis work reports a preliminary biological study performed on nanofibrous biocompatible polylactidecopolycaprolactone (PLA‐PCL) scaffolds intended for tissue regeneration. The aim was to evaluate how matrix surface topography affects cell adhesion and proliferation. Scaffolds prepared by electrospinning either equipped with plane or rotating mandrel collectors, were characterized for their surface topography and nanofiber size. Cell culture studies were carried out using mouse embryonic fibroblast cells lines (NIH‐3T3), as model for skin, murine neuroblastoma neuro‐2α cell line, as model for neuronal tissue, and mouse mesenchymal stem cells (MSCs), because of their differentiation ability. Imaging analysis by scanning electron microscope and laser scanning confocal microscopy together with cell viability (MTT, L 3‐(4,5‐dymethiltiazol‐2‐y)‐2,5 diphenyltetrazolium bromide) test, were performed on cell cultures at fixed time laps. The results showed that electrospun nanofibers supported growth and proliferation of the tested cell lines, but electrospun matrices obtained with rotating mandrel showed significantly higher cell viability that follows the orientation of electrospun nanofibers.