bluuebunny/crossref_metadata_2025_split huggingface dataset:
Short-range ferromagnetic order due to Ir substitutions in single-crystalline Ba(Co1−
x
Ir
x
)2As2 (0 ⩽
x
⩽ 0.25)
Authors: Pakhira Santanu , Sangeetha N S , Smetana V , Mudring A-V , Johnston D C 
Published: December 2020

Abstract
The ternary-arsenide compound BaCo2As2 was previously proposed to be in proximity to a quantum-critical point where long-range ferromagnetic (FM) order is suppressed by quantum fluctuations. Here we report the effect of Ir substitutions for Co on the magnetic and thermal properties of Ba

(

C
o

1
−
x

I
r

x

)

2

A
s

2

(0 ⩽ x ⩽ 0.25) single crystals. These compositions all crystallize in an uncollapsed body-centered-tetragonal ThCr2Si2 structure with space group I4/mmm. Magnetic susceptibility measurements reveal clear signatures of short-range FM ordering for x ⩾ 0.11 below a nearly composition-independent characteristic temperature T
cl ≈ 13 K. The small variation of T
cl with x, thermomagnetic irreversibility between zero-field-cooled and field-cooled magnetic susceptibility versus T, the occurrence of hysteresis in magnetization versus field isotherms at low field and temperature, and very small spontaneous and remanent magnetizations <0.01 μ
B/f.u. together indicate that the FM response arises from short-range FM ordering of FM spin clusters as previously inferred to occur in Ca(Co1−x
Ir
x
)2−y
As2. Heat-capacity C
p(T) data do not exhibit any clear feature around T
cl, consistent with the very small moments of the FM clusters. The C
p(T) in the paramagnetic temperature regime 25–300 K is well described by the sum of a Sommerfeld electronic contribution and Debye and Einstein lattice contributions where the latter lattice contribution suggests the presence of low-frequency optic modes associated with the heavy Ba atoms in the crystals.
Quantum Monte Carlo study of the Hubbard model with next-nearest-neighbor hopping t′: pairing and magnetism
Authors: Yang Shuhui , Ying Tao , Li Weiqi , Yang Jianqun , Sun Xiudong , Li Xingji 
Published: December 2020

Abstract
Using the finite-temperature determinant quantum Monte Carlo (DQMC) algorithm, we study the pairing symmetries of the Hubbard Hamiltonian with next-nearest-neighbor (NNN) hopping t′ on square lattices. By varying the value of t′, we find that the d-wave pairing is suppressed by the onset of t′, while the p + ip-wave pairing tends to emerge for low electron density and t′ around −0.7. Together with the calculation of the anti-ferromagnetic and ferromagnetic spin correlation function, we explore the relationship between anti-ferromagnetic order and the d-wave pairing symmetry, and the relationship between ferromagnetic order and the p + ip-wave pairing symmetry. Our results may be useful for the exploration of the mechanism of the electron pairing symmetries, and for the realization of the exotic p + ip-wave superconductivity.
An iterative phase-correction method for low-quality phase-shift images and its application
Authors: Chen Li , Yun Jin , Xu Zhang , Huan Zhao 
Published: December 2020

Abstract
To solve the issue of phase recovery from low-quality fringe images (where the low quality is caused by noise, non-linear intensity and surface reflectivity changes), an iterative phase-correction method is proposed. The high-phase-precision solution is achieved by regenerating the phase-shift-fringe images from the wrapped phase and performing iterative filtering. In general, compared with conventional methods, the proposed iterative phase-correction method has three main advantages: (a) it suppresses the influence of noise without interference from surface reflectivity; (b) it effectively improves the wrapped phase accuracy, thereby improving 3D measurement accuracy, and (c) it effectively recovers the absolute phase (determined by a multi-frequency heterodyne method) information of surfaces with very low or very high reflectivities, without the additional projection of phase-shift-fringe images. The effectiveness of the proposed iterative phase-correction method is verified by simulation and experiment. The proposed method, applied to binocularly structured light, can improve measurement accuracy and greatly improve the effectiveness of measurement of objects with drastic changes in reflectivity. Based on the calibration accuracy (without gamma calibration of the projector) described in this paper, the root-mean-square deviation of the measurement results for binocularly structured light can reach 0.0094 mm.
On the radiative heat loss and axis-switching phenomena of a decaying laser spark
Authors: Joarder Ratan , Vellala Srinivas L , Singh Awanish P , Syam S , Padhi Upasana P , Choudhury Siba Prasad 
Published: December 2020

Abstract
A three-dimensional numerical simulation of a decaying laser spark in gaseous nitrogen has been carried out in Cartesian co-ordinate. The simulation starts with the introduction of a laser pulse in the domain. Thermal equilibrium has been assumed throughout the numerical simulation involving the species N2, N, N+, e−. The boundary conditions are treated following characteristic property of the waves to ensure smooth transmission of the blast wave out of the computational domain. The previously unexplained axis-switching phenomenon of the breakdown region has been explained, and a qualitative comparison of the same with experimental schlieren images has been made. The total radiation loss, including the loss during the breakdown, has been calculated. The variation of inverse Bremsstrahlung radiation, black body radiation, and spectral radiation of atomic nitrogen with time have been shown separately. Additionally, the temporal variation of radiation intensity of atomic nitrogen over a wavelength range has been plotted. The total radiation loss has been found to be small compared to the deposited laser energy.
3D printed anti-icing and de-icing system based on CNT/GNP doped epoxy composites with self-curing and structural health monitoring capabilities
Authors: Cortés A , Sánchez Romate Xoan F , Jiménez-Suárez A , Campo M , Prolongo M G , Ureña A , Prolongo S G 
Published: December 2020

Abstract
The strain-sensing, self-curing and self-heating capabilities of a 3D printed circuit made of a graphene nanoplatelet and carbon nanotube reinforced resin, have been widely explored. These materials exhibit high Joule’s heating effect capabilities that can be used for post-curing processes. More specifically, the values of glass transition temperature reached by Joule’s heating post-curing were very similar to those obtained by conventional oven heating. The temperature profile along each individual ribbon was relatively homogeneous, being an indicative of a good nanoparticle dispersion, confirmed by field emission gun scanning electron microscope analysis. Furthermore, the proposed printed circuits showed excellent strain-sensing capabilities with a much higher strain sensitivity, with a gauge factor of 6–8, in comparison to conventional metallic gauges or bulk nanocomposites, with a gauge factor of around 2, showing also good linearity. In addition, the breakage of individual ribbons can be easily detected by the strain-sensing system as a sharp increase of the electrical resistance. Finally, temperature compensation tests showed that, in case of printed ribbon breakage, it is possible to keep constant the average temperature of the circuit by raising the applied voltage to avoid ice accretion. Thus, with none to two broken ribbons, the 3D printed circuit can act as an efficient anti-icing and de-icing system.
A Lamb wave-based crack evaluation method in plate-like structures using specular reflections and tip diffractions
Authors: Zhang Nan , Zeng Liang , Lin Jing , Shao Yongsheng 
Published: December 2020

Abstract
The comprehensive assessment of crack angle, length and profile could provide an important reference for the non-destructive evaluation of plate-like structures. In this paper, we aim at fully exploiting information carried by reflections, so that details of the crack could be displayed as much as possible. Firstly, the Lamb wave reflections from a crack are classified into specular waves and tip diffractions. Under the linear assumption of crack profile, the specular waves could be regarded as being transmitted from the mirror point of the actuator with respect to the crack line, thus the corresponding reflection points can be located with geometric methods. On the other hand, diffractions are used to visualize crack tips where a fusion strategy is adopted to get the localization image. Both reflection points and tips are not only interpolated to show the crack position and profile, but also linearly fitted to display the crack trend for the estimation of its length and angle. Numerical investigations and experiments are carried out on different cracks, and related parameters are also discussed. Results show that the proposed method could make an accurate crack evaluation and reconstruct a detailed crack shape.
The nature of the hydrogen interaction on the unreconstructed platinum (110) surface: ab-initio study
Authors: Hanh Tran Thi Thu 
Published: December 2020

Abstract
The theoretical description of the interaction of the hydrogen atoms on the unreconstructed platinum surface Pt(110) was studied within the density functional theory (DFT) calculation. The most stable sites of the adsorbed hydrogen atom on the surface were confirmed: the H atom on the short bridge site (B), and the H atom on the top site (T). By performing the Monte Carlo (MC) simulation for the obtained gas model parameterized by the DFT method, the abundance of B over T was presented. The 5% underestimation of the hydrogen interaction energy in this work compared with the Cyclic Voltammetry experiment was shown. It can be caused by the omission of the hydration effect in the simulation calculation.
Multivalent molecular tension probes as anisotropic mechanosensors: concept and simulation
Authors: Blanchard Aaron T , Salaita Khalid 
Published: December 2020

Abstract
Cells use protein-based mechanosensors to measure the physical properties of their surroundings. Synthetic tension sensors made of proteins, DNA, and other molecular building blocks have recently emerged as tools to visualize and perturb the mechanics of these mechanosensors. While almost all synthetic tension sensors are designed to exhibit orientation-independent force responses, recent work has shown that biological mechanosensors often function in a manner that is highly dependent on force orientation. Accordingly, the design of synthetic mechanosensors with orientation-dependent force responses can provide a means to study the role of orientation in mechanosensation. Furthermore, the process of designing anisotropic force responses may yield insight into the physical basis for orientation-dependence in biological mechanosensors. Here, we propose a DNA-based molecular tension sensor design wherein multivalency is used to create an orientation-dependent force response. We apply chemomechanical modeling to show that multivalency can be used to create synthetic mechanosensors with force response thresholds that vary by tens of pN with respect to force orientation.
Personal assessment of urban heat exposure: a systematic review
Authors: Nazarian Negin , Lee Jason KW 
Published: December 2020

Abstract
To fully address the multi-faceted challenges of urban heat, it is paramount that humans are placed at the center of the agenda. This is manifested in a recent shift in urban heat studies that aim to achieve a ‘human-centric’ approach, i.e. focusing on personalized characteristics of comfort, well-being, performance, and health, as opposed to the one-size-fits-all solutions and guidelines. The proposed article is focused on systematically reviewing personalized urban heat studies and detailing the objectives posed, methodologies utilized, and limitations yet to be addressed. We further summarize current knowledge and challenges in addressing the impact of personal heat exposure on human life by discussing the literature linked with urban heat studies at the human, building, and city scales. Lastly, this systematic review reveals the need for future evaluations focused on accuracy and standardization of human-centric data collection and analytics, and more importantly, addressing critical geographic and socio-economic knowledge gaps identified in the field.
A new auxetic structure with enhanced stiffness via stiffened elliptical perforations
Authors: Jafari Nedoushan Reza , Yu Woong-Ryeol 
Published: December 2020

Abstract
Auxetic materials, a class of metamaterials with negative Poisson’s ratio, have been extensively studied due to their attractive mechanical properties. In this study, an auxetic material was developed using new perforation shapes with stiffeners. Standard elliptical perforations were stiffened and analyzed by the finite-element method. Periodic boundary conditions were applied to the unit cell of the new shapes and their effective Poisson’s ratio and Young’s modulus were calculated. The finite-element analysis found that the proposed stiffened perforated sheets exhibited auxetic behavior and had enhanced stiffness compared with standard elliptically perforated sheets.
Effect of polypropylene-grafted-maleic anhydride content on physical properties of carbon fiber reinforced polypropylene composites
Authors: Jang Ji-un , Youn Sang Jun , Kim Seong Yun , Park Min 
Published: December 2020

Abstract
Polypropylene-grafted-maleic anhydride (PP-g-MAH) is known as an excellent interface modifier that can improve the interface between carbon fiber (CF) and PP. In this study, the effect of PP-g-MAH content on the physical properties of PP composites containing long-fiber CFs was investigated. It was confirmed that PP-g-MAH acted as an interface modifier between the interface between CF and PP, and when an appropriate amount of 10 wt% was incorporated, the tensile strength, tensile modulus, Izod impact strength, and heat deflection temperature were improved by 110%, 50%, 86.7% and 12.7%, respectively. On the other hand, the blending effect of PP-g-MAH, which is a low molecular weight, was greater than the compatibilizing effect when the PP-g-MAH content was mixed above the appropriate content, thereby reducing the physical properties. Therefore, the content of PP-g-MAH as the interface modifier must be designed to be the optimum content considering the CF content to be mixed in order to optimize the physical properties of the composite material.
Older patients’ perspectives toward lifestyle-related secondary cardiovascular prevention after a hospital admission—a qualitative study
Authors: Jepma Patricia , Snaterse Marjolein , Du Puy Simone , Peters Ron J G , op Reimer Wilma J M Scholte 
Published: December 2020

Abstract

Background
lifestyle-related secondary prevention reduces cardiac events and is recommended irrespective of age. However, motivation may be influenced by age and disease progression.

Objective
to explore older cardiac patients’ perspectives toward lifestyle-related secondary prevention after a hospital admission.

Methods
a generic qualitative design was used. Semi-structured interviews were performed with cardiac patients ≥ 70 years within 3 months after a hospital admission. The interview guide was based on the Attitudes, Social influence and self-Efficacy (ASE) model. All interviews were analysed using thematic analysis.

Results
eight themes emerged which were linked to the determinants of the ASE-model. The three themes (i) Perspectives are determined by general health and habits, (ii) feeling the threat as a motivator and (iii) balancing between health benefits and quality of life (QoL), were linked to attitude. Regarding social influence, the themes (iv) feeling both encouraged and hindered by family members, and (v) the healthcare professional says so, were identified. For the self-efficacy determinant, (vi) experiences from previous lifestyle changes, (vii) integrating advice in daily life and (viii) feeling limited by functional impairments, emerged as themes.

Conclusion
most older cardiac patients made no lifestyle modifications after the last hospital admission and balanced possible benefits against their QoL. Functional impairments frequently limit implementation, in particular of physical activity. Patients’ preferences and patient-centred outcomes focusing on QoL and functional independence may be the starting point when healthcare professionals discuss lifestyle modification in older patients. The involvement of family members may help patients to integrate lifestyle-related secondary prevention in daily life.
ANP32A promotes the proliferation, migration and invasion of hepatocellular carcinoma by modulating the HMGA1/STAT3 pathway
Authors: Tian Zilu , Liu Zhiyi , Fang Xiaokang , Cao Kuan , Zhang Bin , Wu Rui , Wen Xin , Wen Quan , Shi Hengliang , Wang Renhao 
Published: December 2020

Abstract
Acidic leucine-rich nuclear phosphoprotein-32A (ANP32A) has been reported to play an essential role in the development and progression of various human cancers. However, its expression pattern and possible mechanism in human hepatocellular carcinoma (HCC) remain to be elucidated. In this study, we used western blot and immunohistochemical staining to detect protein expression. The effects of ANP32A on the proliferation, migration and invasion of HCC cells were examined using 5-ethynyl-20-deoxyuridine (EdU), colony formation, CCK-8, and transwell assays. RT-qPCR was performed to detect mRNA expression. The interaction between ANP32A and the high mobility group A1 (HMGA1) mRNA was assessed using RNA immunoprecipitation (RIP). The tumorigenicity of ANP32A was assessed by establishing a xenograft tumor model in Balb/c nude mice. We found that the ANP32A protein was expressed at high levels in patients with HCC, which was associated with a poor prognosis. Functional experiments revealed that the silencing of ANP32A inhibited the proliferation, migration, and invasion of HCC cells, whereas overexpression of ANP32A promoted these processes. Further investigations indicated that ANP32A bound the HMGA1 mRNA and maintained its stability to promote the expression of HMGA1, thereby increasing the expression and activation of STAT3. Finally, a xenograft tumor model of Balb/c nude mice confirmed the tumorigenicity of ANP32A. This study found that ANP32A is up-regulated in patients with HCC and may accelerate the proliferation, migration and invasion of HCC cells by modulating the HMGA1/STAT3 pathway.
Dissociable Auditory Cortico-Cerebellar Pathways in the Human Brain Estimated by Intrinsic Functional Connectivity
Authors: Ren Jianxun , Hubbard Catherine S , Ahveninen Jyrki , Cui Weigang , Li Meiling , Peng Xiaolong , Luan Guoming , Han Ying , Li Yang , Shinn Ann K , Wang Danhong , Li Luming , Liu Hesheng 
Published: December 2020

Abstract
The cerebellum, a structure historically associated with motor control, has more recently been implicated in several higher-order auditory–cognitive functions. However, the exact functional pathways that mediate cerebellar influences on auditory cortex (AC) remain unclear. Here, we sought to identify auditory cortico-cerebellar pathways based on intrinsic functional connectivity magnetic resonance imaging. In contrast to previous connectivity studies that principally consider the AC as a single functionally homogenous unit, we mapped the cerebellar connectivity across different parts of the AC. Our results reveal that auditory subareas demonstrating different levels of interindividual functional variability are functionally coupled with distinct cerebellar regions. Moreover, auditory and sensorimotor areas show divergent cortico-cerebellar connectivity patterns, although sensorimotor areas proximal to the AC are often functionally grouped with the AC in previous connectivity-based network analyses. Lastly, we found that the AC can be functionally segmented into highly similar subareas based on either cortico-cerebellar or cortico-cortical functional connectivity, suggesting the existence of multiple parallel auditory cortico-cerebellar circuits that involve different subareas of the AC. Overall, the present study revealed multiple auditory cortico-cerebellar pathways and provided a fine-grained map of AC subareas, indicative of the critical role of the cerebellum in auditory processing and multisensory integration.
Proficiency Testing to Assess Technical Performance for CTC-Processing and Detection Methods in CANCER-ID
Authors: Neves Rui P L , Ammerlaan Wim , Andree Kiki C , Bender Sebastian , Cayrefourcq Laure , Driemel Christiane , Koch Claudia , Luetke-Eversloh Merlin Verena , Oulhen Marianne , Rossi Elisabetta , Alix-Panabières Catherine , Betsou Fay , Farace Françoise , Riethdorf Sabine , Schlange Thomas , Wikman Harriet , Zamarchi Rita , Pantel Klaus , Terstappen Leon W M M , Stoecklein Nikolas H ,   for the CANCER-ID Consortium
Published: December 2020

Abstract

Background
Multiple technologies are available for detection of circulating tumor cells (CTCs), but standards to evaluate their technical performance are still lacking. This limits the applicability of CTC analysis in clinic routine. Therefore, in the context of the CANCER-ID consortium, we established a platform to assess technical validity of CTC detection methods in a European multi-center setting using non-small cell lung cancer (NSCLC) as a model.

Methods
We characterized multiple NSCLC cell lines to define cellular models distinct in their phenotype and molecular characteristics. Standardized tumor-cell-bearing blood samples were prepared at a central laboratory and sent to multiple European laboratories for processing according to standard operating procedures. The data were submitted via an online tool and centrally evaluated. Five CTC-enrichment technologies were tested.

Results
We could identify 2 cytokeratin expressing cell lines with distinct levels of EpCAM expression: NCI-H441 (EpCAMhigh, CKpos) and NCI-H1563 (EpCAMlow, CKpos). Both spiked tumor cell lines were detected by all technologies except for the CellSearch system that failed to enrich EpCAMlow NCI-H1563 cells. Mean recovery rates ranged between 49% and 75% for NCI-H411 and 32% and 76% for NCI-H1563 and significant differences were observed between the tested methods.

Conclusions
This multi-national proficiency testing of CTC-enrichment technologies has importance in the establishment of guidelines for clinically applicable (pre)analytical workflows and the definition of minimal performance qualification requirements prior to clinical validation of technologies. It will remain in operation beyond the funding period of CANCER-ID in the context of the European Liquid Biopsy Society (ELBS).
What (if any) behaviour change techniques do government-led cybersecurity awareness campaigns use?
Authors: van Steen Tommy , Norris Emma , Atha Kirsty , Joinson Adam 
Published: December 2020

AbstractWith the surge in cyber incidents in recent years, many linked to human error, governments are quite naturally developing security campaigns to improve citizens’ security behaviour. However, it remains not only unclear how successful these campaigns are in changing behaviour, but also what established behaviour change techniques—if any—they employ in order to achieve this goal. To investigate this, we analysed 17 government-sponsored cybersecurity campaign materials. We coded the materials for their intervention functions according to the Behaviour Change Wheel and their behaviour change techniques in accordance with the Behavioural Change Technique Taxonomy (version 1). Our findings show that security campaigns are often focused on education and increasing awareness, under the assumption that as long as citizens are aware of the risk, and are provided with information on how to improve their security behaviour, behaviour will change. Additionally, there is a lack of published effectiveness studies investigating the direct effects of a governmental cybersecurity campaign. Proposed improvements to security campaigns are discussed.