bluuebunny/crossref_metadata_2025_split huggingface dataset:
About the existence of warm H-rich pulsating white dwarfs
Authors: Althaus Leandro G. , Córsico Alejandro H. , Uzundag Murat , Vučković Maja , Baran Andrzej S. , Bell Keaton J. , Camisassa María E. , Calcaferro Leila M. , De Gerónimo Francisco C. , Kepler Souza Oliveira , Silvotti Roberto 
Published: November 2019

Context.The possible existence of warm (Teff ∼ 19 000 K) pulsating DA white dwarf (WD) stars, hotter than ZZ Ceti stars, was predicted in theoretical studies more than 30 yr ago. These studies reported the occurrence ofg-mode pulsational instabilities due to theκmechanism acting in the partial ionization zone of He below the H envelope in models of DA WDs with very thin H envelopes (MH/M⋆ ≲ 10−10). However, to date, no pulsating warm DA WD has been discovered, despite the varied theoretical and observational evidence suggesting that a fraction of WDs should be formed with a range of very low H content.Aims.We re-examine the pulsational predictions for such WDs on the basis of new full evolutionary sequences. We analyze all the warm DAs observed by the TESS satellite up to Sector 9 in order to search for the possible pulsational signal.Methods.We computed WD evolutionary sequences of masses 0.58 and 0.80M⊙with H content in the range −14.5 ≲ log(MH/M⋆)≲ − 10, appropriate for the study of pulsational instability of warm DA WDs. Initial models were extracted from progenitors that were evolved through very late thermal pulses on the early cooling branch. We useLPCODEstellar code into which we have incorporated a new full-implicit treatment of time-dependent element diffusion to precisely model the H–He transition zone in evolving WD models with very low H content. The nonadiabatic pulsations of our warm DA WD models were computed in the effective temperature range of 30 000 − 10 000 K, focusing on ℓ = 1gmodes with periods in the range 50 − 1500 s.Results.We find that traces of H surviving the very late thermal pulse float to the surface, eventually forming thin, growing pure H envelopes and rather extended H–He transition zones. We find that such extended transition zones inhibit the excitation ofgmodes due to partial ionization of He below the H envelope. Only in the cases where the H–He transition is assumed much more abrupt than predicted by diffusion do models exhibit pulsational instability. In this case, instabilities are found only in WD models with H envelopes in the range of −14.5 ≲ log(MH/M⋆)≲ − 10 and at effective temperatures higher than those typical for ZZ Ceti stars, in agreement with previous studies. None of the 36 warm DAs observed so far by TESS satellite are found to pulsate.Conclusions.Our study suggests that the nondetection of pulsating warm DAs, if WDs with very thin H envelopes do exist, could be attributed to the presence of a smooth and extended H–He transition zone. This could be considered as indirect proof that element diffusion indeed operates in the interior of WDs.
Total Hip Arthroplasty in Multiple Sclerosis
Authors: Jandl Nico Maximilian , Schmidt Tobias , Niemeier Andreas 
Published: November 2019

AbstractSystemic neurological disease represents a risk factor for complications after total hip arthroplasty (THA), especially for dislocation, infections, gait disorders and fall-related periprosthetic fractures. There is little specific literature on total hip arthroplasty in patients with multiple sclerosis. However, increased revision rates have been reported, which are in part due to dislocations. Implants with increased dislocation safety, e.g. tripolar acetabular systems, can represent a reasonable alternative. Due to gait disorders and a higher prevalence of osteoporosis, specific osteological evaluation and treatment should be considered to prevent periprosthetic fractures. This short review summarizes the current literature on total hip arthroplasty in patients with multiple sclerosis.
The Effect of Wang’s Neck-shoulder Point Technique on Frozen
Shoulder Compared to Massage
Authors: Wang Feng 
Published: November 2019

Abstract
Background The traditional exercise technique of traditional Chinese
medicine has a good effect on frozen shoulder, but it is more complicated and
labor-intensive. The author has discovered a special technique in long-term
clinical practice, which has a good effect on the disease and is more simple and
practical.
Objective To observe the curative effect of Wang’s technique of
the Neck shoulder point in treating primary frozen shoulder, and compare it with
routine massage.
Methodology 80 patients with frozen shoulder were randomly divided into
treatment and control groups. The control group was given a routine massage,
with the treatment group using Wang’s technique on the Neck shoulder
point. Each group received 1 course (10 times) of treatment to observe the
curative effect employing a Visual Analog Scale (VAS) and University of
California shoulder joint score (UCLA).
Results Comparison of clinical efficacy between 2 groups of patients,
there was no statistical difference between the 2 groups (p>0.05) on the
total effectiveness rate. After the comparison of two groups pre and post
treatment, VAS scores were significantly reduced(p<0.05), and the scores
of treatment group decreased more significantly than that of the control
group(p<0.05), the UCLA scores of both groups were significantly
improved after treatment compared with before treatment(p<0.05), There
was no significant difference in UCLA score between 2 group(p>0.05).
Conclusion The curative effect of new technique is satisfactory and can
improve the primary frozen shoulder and the technique can take less time and
physical strength, and it also has a greater analgesic effect compared with a
routine massage.
Ganglioglioma of Conus Medullaris—A Rare Case
Authors: Kumar Sushil , Misra Rajneesh , Kumar Kundan , Sharma Sandeep 
Published: November 2019

Abstract
Gangliogliomas favor the temporal lobe. They are rarely reported in the spinal cord. Ganglioglioma of the conus medullaris is very rare. An 11-year-old boy presented with progressive weakness of bilateral lower limbs. Clinical examination and radiologic investigations revealed a lesion in the conus medullaris with an exophytic component involving the cauda equina roots. The lesion was excised near totally. Its histopathologic examination revealed it to be a ganglioglioma. Gangliogliomas of the conus medullaris are rare lesions. Subtotal or near-total excision with preservation of the function should be the aim of the surgical intervention. Because preoperative function largely dictates the postoperative course, it is advisable to intervene early at the first hint of neurologic compromise.
Neutrophil Extracellular Traps and Liver Disease
Authors: Hilscher Moira B. , Shah Vijay H. 
Published: November 2019

AbstractNeutrophil extracellular traps, or NETs, are heterogenous, filamentous structures which consist of extracellular DNA, granular proteins, and histones. NETs are extruded by a neutrophil in response to various stimuli. Although NETs were initially implicated in immune defense, subsequent studies have implicated NETs in a spectrum of disease processes, including autoimmune disease, thrombosis, and cancer. NETs also contribute to the pathogenesis of several common liver diseases, including alcohol-associated liver disease and portal hypertension. Although there is much interest in the therapeutic potential of NET inhibition, future clinical applications must be balanced against potential increased risk of infection.
Hydrocephalus Following Giant Transosseous Vertex Meningioma Resection
Authors: Schmidt Bradley T. , Cikla Ulas , Kozan Abdulbaki , Dempsey Robert J. , Baskaya Mustafa K. 
Published: November 2019

Abstract
Introduction Meningiomas are among the most common primary intracranial tumors. While well-described, there is limited information on the outcomes and consequences following treatment of giant-sized vertex-based meningiomas. These meningiomas have specific risks and potential complications due to their size, location, and involvement with extracalvarial soft tissue and dural sinuses. Herein, we present four giant-sized vertex transosseous meningioma cases with involvement and occlusion of the sagittal sinus, that postoperatively developed external hydrocephalus and ultimately required shunting.
Methods A retrospective chart review identified patients with large vertex meningiomas that were: (1) large (>6 cm) with hemispheric (no skull base) location, (2) involvement of the superior sagittal sinus resulting in complete sinus occlusion, (3) involvement of dura resulting in a large duraplasty area, (4) transosseous involvement requiring a 5 cm or larger craniectomy for resection of invaded calvarial bone.
Results Tumors were resected in all four cases, with all patients subsequently developing external hydrocephalus which required shunting within 2 weeks to 6 months postsurgery.
Conclusion We believe this may be the first report of the development of hydrocephalus following surgical resection of these large lesions. Based on our observations, we propose that a combination of superior sagittal sinus occlusion and changes in brain elasticity and compliance affect the brain's CSF absorptive capacity, which ultimately lead to hydrocephalus development. We suggest that neurosurgeons be aware that postoperative hydrocephalus can quickly develop following treatment of giant-sized vertex-based meningiomas, and that correction of hydrocephalus with shunting can readily be achieved.
‘[S]eas may divide and oceans roll between but Friends is Friends whatever intervene’
Authors: Bonness Dania Jovanna 
Published: November 2019

Present-day New Zealand English is a relatively homogenous, uniform variety with little regional variation (Gordon and Trudgill 2004: 448), but just over 150 years ago, various different English dialects could be heard in
Aotearoa – the land of the long white cloud. One of them was Irish English. The present chapter follows three Irish
emigrants on their journey to New Zealand and looks at how their language changed over the span of several decades by looking at the letters
they wrote to keep in touch with their families. Some of these letters show Māori loan words, or Australian/New Zealand colloquialisms, while
other letters also indicate some morphosyntactic variation over the years. This small-scale study therefore contributes to investigations
looking at individuals’ language change in the rise of colonial varieties of English, and it can provide evidence for theoretical frameworks
of new-dialect formation (e.g. Trudgill 2004; Schneider
2003, 2007).
Data reduction and calibration of the FMG onboard ASO-S
Authors: Su Jiang-Tao , Bai Xian-Yong , Chen Jie , Guo Jing-Jing , Liu Suo , Wang Xiao-Fan , Xu Hai-Qing , Yang Xiao , Song Yong-Liang , Deng Yuan-Yong , Ji Kai-Fan , Deng Lei , Huang Yu , Li Hui , Gan Wei-Qun 
Published: November 2019

Abstract
The Full-disk vectorMagnetoGraph (FMG) instrument will carry out polarization observations at one wavelength position of the Fe I 5324.179 °A spectral line. This paper describes how to choose this single wavelength position, the relevant data-processing and the magnetic field calibrations based on the measured polarization signals at one single wavelength position. It is found that solar radial Doppler velocity, which can cause the spectral line to shift, is a disadvantageous factor for the linear calibration at one wavelength position. Observations at two symmetric wavelength positionsmay significantly reduce the wavelength shift effect (∼ 75%), but simulations show that such polarization signals located at the solar limbs (e.g., beyond the longitude range of ±30°) are not free from the effect completely. In future work, we plan to apply machine learning techniques to calibrate vector magnetic fields, or employ full Stokes parameter profile inversion techniques to obtain accurate vector magnetic fields, in order to complement the linear calibration at the single wavelength position.
The Lyman-alpha Solar Telescope (LST) for the ASO-S mission – III. data and potential diagnostics
Authors: Feng Li , Li Hui , Chen Bo , Li Ying , Susino Roberto , Huang Yu , Lu Lei , Ying Bei-Li , Li Jing-Wei , Xue Jian-Chao , Yang Yu-Tong , Hong Jie , Li Jian-Ping , Zhao Jie , Gan Wei-Qun , Zhang Yan 
Published: November 2019

Abstract
The Lyman-alpha Solar Telescope (LST) is one of the three payloads onboard the Advanced Space-based Solar Observatory (ASO-S) mission. It aims at imaging the Sun from the disk center up to 2.5 R⊙ targeting solar eruptions, particularly coronal mass ejections (CMEs), solar flares, prominences/filaments and related phenomena, as well as the fast and slow solar wind. The most prominent speciality of LST is the simultaneous observation of the solar atmosphere in both Lyα and white light (WL) with high temporospatial resolution both on the solar disk and the inner corona. New observations in the Lyα line together with traditionalWL observations will provide us with many new insights into solar eruptions and solar wind. LST consists of a Solar Corona Imager (SCI) with a field of view (FOV) of 1.1 – 2.5R⊙, a Solar Disk Imager (SDI) and a full-disk White-light Solar Telescope (WST) with an identical FOV up to 1.2R⊙. SCI has a dual waveband in Lyα (121.6 ± 10 nm) and in WL (700 ± 40 nm), while SDI works in the Lyα waveband of 121.6 ± 7.5 nm and WST works in the violet narrow-band continuum of 360 ± 2.0 nm. To produce high quality science data, careful ground and in-flight calibrations are required. We present our methods for different calibrations including dark field correction, flat field correction, radiometry, instrumental polarization and optical geometry. Based on the data calibration, definitions of the data levels and processing procedures for the defined levels from raw data are described. Plasma physical diagnostics offer key ingredients to understand ejecta and plasma flows in the inner corona, as well as different features on the solar disk including flares, filaments, etc. Therefore, we are making efforts to develop various tools to detect the different features observed by LST, and then to derive their physical parameters, for example, the electron density and temperature of CMEs, the outflow velocity of the solar wind, and the hydrogen density and mass flows of prominences. Coordinated observations and data analyses with the coronagraphs onboard Solar Orbiter, PROBA-3, and Aditya are also briefly discussed.
Simulations and software development for the Hard X-ray Imager onboard ASO-S
Authors: Su Yang , Liu Wei , Li You-Ping , Zhang Zhe , Hurford Gordon J. , Chen Wei , Huang Yu , Li Zhen-Tong , Jiang Xian-Kai , Wang Hao-Xiang , Xia Fan-Xiao-Yu , Chen Chang-Xue , Yu Wen-Hui , Yu Fu , Wu Jian , Gan Wei-Qun 
Published: November 2019

Abstract
China’s first solar mission, the Advanced Space-based Solar Observatory (ASO-S), is now changing from Phase B to Phase C. Its main scientific objectives are summarized as ‘1M2B’, namely magnetic field and two types of bursts (solar flares and coronal mass ejections). Among the three scientific payloads, Hard X-ray Imager (HXI) observes images and spectra of X-ray bursts in solar flares. In this paper, we briefly report on the progresses made by the HXI science team (data and software team) during the design phase (till May 2019). These include simulations of HXI imaging, optimization of HXI grids, development of imaging algorithms, estimation of orbital background, as well as in-orbit calibration plan. These efforts provided guidance for the engineering, improved HXI’s imaging capability and reduced the cost of the instrument.
Chinese Hα Solar Explorer (CHASE) – a complementary space mission to the ASO-S
Authors: Li Chuan , Fang Cheng , Li Zhen , Ding Ming-De , Chen Peng-Fei , Chen Zhe , Lin Liang-Kui , Chen Chang-Zheng , Chen Chang-Ya , Tao Hong-Jiang , You Wei , Hao Qi , Dai Yu , Cheng Xin , Guo Yang , Hong Jie , An Min-Jie , Cheng Wei-Qiang , Chen Jian-Xin , Wang Wei , Zhang Wei 
Published: November 2019

Abstract
The Chinese Hα Solar Explorer (CHASE) is designed to test a newly developed satellite platform and conduct solar observations. The scientific payload of the satellite is an Hα imaging spectrograph (HIS), which can, for the first time, acquire full-disk spectroscopic solar observations in the Hα waveband. This paper briefly introduces CHASE/HIS including its scientific objectives, technical parameters, scientific application system, etc. The CHASE mission is scheduled to launch in 2021. It will complement the observations by on-orbit solar spacecraft (such as SDO, IRIS, STEREO and PSP), as well as future solar missions of the Solar Orbiter and Advanced Space-based Solar Observatory (ASO-S).
Joint hard X-ray observations with ASO-S/HXI and SO/STIX
Authors: Krucker Säm , Hurford Gordon J. , Su Yang , Gan Wei-Qun 
Published: November 2019

Abstract
This paper discusses the potential of future joint hard X-ray solar flare observations between the Hard X-ray Imager (HXI) onboard the Advanced Space-based Solar Observatory (ASO-S) mission and the Spectrometer/Telescope for Imaging X-rays (STIX) on Solar Orbiter. The different viewing perspectives of the two telescopes relative to the Sun will allow us for the first time to systematically study non-thermal hard X-ray emissions stereoscopically. During the 4-years of the nominal mission of ASO-S, we expect to jointly observe about 160 flares above GOES M1 class to systematically study hard X-ray directivity. For about 16 partially limb-occulted STIX flares, we will have observations of the entire flare by HXI. Such observations will enable us to simultaneously study the all-important coronal hard X-ray sources, which are generally lost in the instrument’s individual imaging dynamic range, in combination with the chromospheric footpoint emissions. The two different detector systems used in the two telescopes make the relative calibration between the two instruments a key task that needs to be addressed before creditable science results can be published. If an accurate inter-calibration can be achieved using jointly observed flares on the disk, observations with HXI and STIX will provide new and essential key diagnostics for solar flare physics.
Flexible and stretchable photodetectors and gas sensors for wearable healthcare based on solution-processable metal chalcogenides
Authors: Yan Qi , Gao Liang , Tang Jiang , Liu Huan 
Published: November 2019

Abstract
Wearable smart sensors are considered to be the new generation of personal portable devices for health monitoring. By attaching to the skin surface, these sensors are closely related to body signals (such as heart rate, blood oxygen saturation, breath markers, etc.) and ambient signals (such as ultraviolet radiation, inflammable and explosive, toxic and harmful gases), thus providing new opportunities for human activity monitoring and personal telemedicine care. Here we focus on photodetectors and gas sensors built from metal chalcogenide, which have made great progress in recent years. Firstly, we present an overview of healthcare applications based on photodetectors and gas sensors, and discuss the requirement associated with these applications in detail. We then discuss advantages and properties of solution-processable metal chalcogenides, followed by some recent achievements in health monitoring with photodetectors and gas sensors based on metal chalcogenides. Last we present further research directions and challenges to develop an integrated wearable platform for monitoring human activity and personal healthcare.
Recent progress on gas sensors based on graphene-like 2D/2D nanocomposites
Authors: Yuan Songyang , Zhang Shaolin 
Published: November 2019

Abstract
Two-dimensional (2D) nanomaterials have demonstrated great potential in the field of flexible gas sensing due to their inherent high specific surface areas, unique electronic properties and flexibility property. However, numerous challenges including sensitivity, selectivity, response time, recovery time, and stability have to be addressed before their practical application in gas detection field. Development of graphene-like 2D/2D nanocomposites as an efficient strategy to achieve high-performance 2D gas sensor has been reported recently. This review aims to discuss the latest advancements in the 2D/2D nanocomposites for gas sensors. We first elaborate the gas-sensing mechanisms and the collective benefits of 2D/2D hybridization as sensor materials. Then, we systematically present the current gas-sensing applications based on different categories of 2D/2D nanocomposites. Finally, we conclude the future prospect of 2D/2D nanocomposites in gas sensing applications.
Screen-printed soft triboelectric nanogenerator with porous PDMS and stretchable PEDOT:PSS electrode
Authors: Wan Haochuan , Cao Yunqi , Lo Li-Wei , Xu Zhihao , Sepúlveda Nelson , Wang Chuan 
Published: November 2019

Abstract
The recent development on wearable and stretchable electronics calls for skin conformable power sources that are beyond current battery technologies. Among the many novel energy devices being explored, triboelectric nanogenerator (TENG) made from intrinsically stretchable materials has a great potential to meet the above requirement as being both soft and efficient. In this paper, we present a lithography-free and low-cost TENG device comprising a porous-structured PDMS layer and a stretchable PEDOT:PSS electrode. The porous PDMS structure is formed by using self-assembled polystyrene beads as the sacrificial template and it is highly ordered with great uniformity and high structural stability under compression force. Moreover, the porous PDMS TENG exhibits improved output voltage and current of 1.65 V and 0.54 nA compared to its counterpart with non-porous PDMS with 0.66 V and 0.34 nA. The effect of different loading force and frequency on the output response of the TENG device has also been studied. This work could shed light on diverse structural modification methods for improving the performance of PDMS-based TENG and the development of intrinsically stretchable TENG for wearable device applications.
System design of smart solar photovoltaic water pump in Indonesia
Authors: Pratilastiarso J , Tridianto E , Diana L 
Published: November 2019

Abstract
Indonesia has a vast agricultural land. However, during the dry season, agricultural land does not get enough water. The problem can be solved by using the abundant amount of solar light during the dry season. It is Smart Solar Photovoltaic Water Pump (SSPWP). This research is system design of SSPWP. It consists of Photovoltaic panel, solar charger control, accumulator, inverter, water pump, mobile phone, and alarm. The working principle of the system is a solar cell in Photovoltaic panel exposes solar light then it produces direct current electricity. It is supplied to the water pump to irrigate farm. This system is connected to a mobile phone so that farmer can control irrigation for their farm automatically. System design consists Electric water Pump 220 Volt AC 200 Watt, with four Photos voltaic panels 12 – 36 Volt 180-Watt Peak Maximum power 720 Watt, and 72 Ampere Hour Battery.