bluuebunny/crossref_metadata_2025_split huggingface dataset:
Long‐Range Optical Wireless Communication System Based on a Large‐Area, Q‐Dots Fluorescent Antenna
Authors: Umair Muhammad Ali , Seminara Marco , Meucci Marco , Fattori Marco , Bruni Francesco , Brovelli Sergio , Meinardi Francesco , Catani Jacopo 
Published: December 2022

AbstractFluorescent concentrators (FCs) have been recently proposed as optical condensers for visible light communications (VLC) and optical wireless communication (OWC) receivers, with advantages over conventional optical stages in terms of optical gain and field of view (FoV). However, the use of FC‐based receivers in real‐world scenarios is hampered by the need for large resilience of the involved chromophores to sunlight exposure, and availability of large‐area FC substrates with suitable optochemical properties. This paper presents an innovative OWC system, based on a high‐power blue LED and a large‐area FC‐based on CuInS2quantum dots (Q‐Dots) as receiving optical stage. A thorough characterization of the FC material in terms of conversion efficiency, temporal response, and FoV is provided, along with a full set of outdoor measurements. The combination of the Q‐Dots fluorophores chemico‐physical properties with the strong DC rejection granted by the design receiver stage allows error‐free VLC link distances up to 60 m and baud rates up to 1 Mb/s. This work represents the first demonstration of long‐range VLC links under strong solar irradiance using large‐area FC antennas and paves the way to deployment of long‐range free‐space optical links with minimal susceptibility to misalignments and pointing instabilities between receiver and transmitter.
The effect of social crowding on self‐perceived health risks in healthcare services
Authors: Shen Manqiong , Gao Shiwen , Wang Haizhong 
Published: December 2022

AbstractOvercrowding in healthcare environments (e.g., hospitals) has become a widely identified problem in today's healthcare. This research documents whether and how social crowding affects consumers' self‐perceived health risks in healthcare environments and its downstream effect. One pilot study (secondary data analysis), seven laboratory experiments, and a field survey (Study 6) demonstrated that social crowding increased individuals' self‐perceived health risks through a lack of control (Studies 1–6), thereby leading to overspending on the healthcare products (Study 5). Furthermore, the mediating process was moderated by choice and disease symptom severity (Studies 3 and 4). The findings of this research theoretically enrich our understanding of how social crowding interacts with individual disease symptoms and the services provided in the healthcare environment, and practically provide important implications for healthcare practitioners in managing consumers' health risks and consumption behavior.
Preparation of CF/PEEK Composites with High Mechanical Performance Using PEEK Derivatives as the Sizing Agent
Authors: Ren Tianning , Zhu Guangming , Zhang Chengshuang , Wang Shiyu 
Published: December 2022

AbstractOwing to their excellent physical and chemical properties, the carbon fibre reinforced poly(ether‐ether‐ketone) composites (CF/PEEK) are widely used in aerospace applications such as rockets, missiles, and high‐speed vehicles. However, both carbon fibre (CF) and poly(ether‐ether‐ketone) (PEEK) have inert molecular chain structures, which seriously affect the interfacial properties of CF/PEEK composites. In this study, to improve the properties of CF/PEEK composites, carboxylated PEEK (PEEK‐COOH) with different carboxylation degrees is synthesized as the sizing agent by a “two‐step” method. Then, the activated CF surface is coated by PEEK‐COOH sizing layers with different functionalization degrees to prepare the CF/PEEK composites. The results show that the interfacial properties of CF/PEEK composites are improved after applying the sizing agent. When the carboxylation degree of PEEK‐COOH is 19.61%, the flexural strength, flexural modulus, and interlaminar shear strength (ILSS) of CF/PEEK composites reach 489.34 MPa, 25.387 GPa, and 81.3 MPa, respectively. In addition, the use of PEEK‐COOH sizing agents can form an excellent transition layer between CF and PEEK, creating an efficient stress transfer system and facilitating an even stress distribution between CF and PEEK. Furthermore, the main mechanism of material fracture changes from CF debonding to CF and resin fracture.
Aqueous Dispersions of Polypropylene: Toward Reference Materials for Characterizing Nanoplastics
Authors: Hildebrandt Jana , Thünemann Andreas F. 
Published: December 2022

AbstractMicroplastics and nanoplastics pollute the natural environment all over the world, but the full extent of the hazards posed by this waste is unclear. While research on microplastics is well advanced, little work has been done on nanoplastics. This discrepancy is mainly due to the lacking ability to detect nanoplastics in biologically and environmentally relevant matrices. Nanoplastics reference materials can help the development of suitable methods for identifying and quantifying nanoplastics in nature. The aim is to synthesize nanoplastics made from one of the most commonly used plastics, namely polypropylene. An easy way to produce long‐term stable aqueous dispersions of polypropylene nanoparticles (nano polypropylene) is reported. The nanoplastic particles, prepared by mechanical breakdown, show a mean hydrodynamic diameter of Dh = 180.5 ± 5.8 nm and a polydispersity index of PDI = 0.084 ± 0.02. No surfactant is needed to obtain dispersion which is stable for more than 6 months. The colloidal stability of the surfactant‐free nano polypropylene dispersions is explained by their low zeta potential of ζ = −43 ± 2 mV.
The use of segregation analysis in interpretation of sequence variants in SMAD3: A case report
Authors: Ratajska Aleksandra , Vigeland Magnus D. , Wirgenes Katrine Verena , Krohg‐Sørensen Kirsten , Paus Benedicte 
Published: December 2022

AbstractBackgroundWhile representing a significant improvement, the introduction of next‐generation sequencing in genetic diagnosis also prompted new challenges. Despite widely recognized consensus guidelines for the interpretation of sequence variants, many variants remain unclassified or are discordantly interpreted. In heritable thoracic aortic aneurysms with dissection (HTAAD), most cases are caused by a heterozygous, private missense mutation, possibly contributing to the relatively common reports of variants with uncertain significance in this group. Segregation analysis necessitates advanced likelihood‐based methods typically inaccessible to non‐experts and is hampered by reduced penetrance, possible phenocopies, and non‐availability of DNA from deceased relatives.MethodsIn this report, challenges in variant interpretation and the use of segregation analyses were illustrated in two families with a suspected HTAAD disorder. The R package segregatr, a novel implementation of full‐likelihood Bayes factor (FLB), was performed to explore the cosegregation of the variants in these families.ConclusionUsing the R package segregatr, cosegregation in the reported families concluded with strong and supporting evidence for pathogenicity. Surveillance of families in a multidisciplinary team enabling systematic phenotype description for standardized segregation analysis with a robust calculation method may be imperative for reliable variant interpretation in HTAAD.
A comparative study of hydroxyethylcellulose‐based solid polymer electrolytes for solid state Zn batteries
Authors: Brige Amandine , Olsson Martina , Xiong Shizhao , Matic Aleksandar 
Published: December 2022

AbstractRechargeable zinc metal batteries are greener and safer alternative to lithium batteries, but they suffer from poor reversibility due to growth of zinc dendrites and water splitting reactions of aqueous electrolytes. One strategy to overcome these drawbacks is replacing aqueous electrolyte with solid polymer electrolyte (SPE). In this work, we examine the possibility of fabricating solid electrolyte from a bio‐based polymer, hydroxyethylcellulose (HEC), with the aim to further increase the sustainability of zinc batteries. Various types of zinc salts, drying procedures and the salt concentrations are investigated for their impact on the ionic conductivity, structure, and phase behavior of as‐prepared polymer electrolytes. It is found that HEC has a good film‐forming ability compared with commonly used poly(ethylene oxide) but its low salt‐dissociation capability leads to an ionic conductivity of 10−6 S cm−1 even at the elevated temperature of 110°C, hindering the possibility of solely utilizing HEC as matrix of solid electrolyte. Our results suggest that introducing a new polymer with higher salt‐dissociation capability or lower glass transition temperature into the HEC matrix can be a reliable way to build solid polymer electrolytes with sufficient ionic conductivity and good mechanical property for future zinc batteries.
Durable, highly sensitive conductive elastomeric nanocomposite films containing various graphene nanoplatelets and their derivatives
Authors: Meng Qingshi , Liu Daiqiang , zhou Yi , Cai Rui , Feng Yuanyuan , Hu Zonghao , Han Sensen 
Published: December 2022

AbstractIn recent years, the use of nano‐fillers in flexible polymer matrix to prepare highly flexible, stretchable, and multifunctional product has been widely studied. However, the uneven dispersion of nano‐fillers in polymer matrix is an important factor hindering their performance. In this study, a method to prepare graphene nanosheets by ball milling and modification with the silane coupling agent APTES is reported, and this method can reduce the thickness of the nanosheets, improving the dispersion effect and compatibility of the nanosheets in the PDMS matrix. The mechanical and conductive properties of the prepared composite films were further analyzed. The morphology showed that our modified graphene (MGE and BMGE) are more evenly dispersed in the PDMS matrix compared to the unmodified graphene (GNP). The MGE/PDMS composite film has significantly improved electrical conductivity. It has a wide sensing range (up to 48%), high sensitivity (GF of 152 in the 20%–40% strain range) and reliable cycle repeatability (>10,000 cycles) with a response time of 0.12 s. The results show that the modified graphene/PDMS conductive elastic nanocomposite film is an ideal material for making flexible electronic products.
Sickle cell disease and social determinants of health: A scoping review
Authors: Khan Hamda , Krull Mathew , Hankins Jane S. , Wang Winfred C. , Porter Jerlym S. 
Published: December 2022

AbstractSocial determinants of health (SDoH) may impact outcomes in sickle cell disease (SCD). We conducted a comprehensive literature review of five electronic databases to elucidate the relationship between SDoH and SCD, and identify gaps in the literature. Our search yielded 59 articles, which we organized into five SDoH areas: Neighborhood and Built Environment, Health and Healthcare, Social and Community Context, Education, and Economic Stability. We found that social determinants, such as access to healthcare, were inconsistently evaluated. Improved recognition and understanding of SDoH should enhance the development of programs that directly address its detrimental effects on patients with SCD.
The role of ethicists in pediatric hematology/oncology: Current status and future needs
Authors: Benedetti Daniel J. , Marron Jonathan M. , Thomas Stefanie M. , Brown Amy E. Caruso , Pyke‐Grimm Kimberly A. , Johnson Liza‐Marie , Unguru Yoram , Kodish Eric 
Published: December 2022

AbstractAs pediatric hematology/oncology (PHO) becomes more complex and sub‐subspecialized, dedicated PHO ethicists have emerged as sub‐subspecialists focused on addressing ethical issues encountered in clinical and research practices. PHO physicians and other clinicians with advanced training in bioethics contribute to the field through ethics research, education, and ethics consultation services. Furthermore, there exists a newer generation of PHO trainees interested in bioethics. This review details the experiences of current PHO ethicists, providing a blueprint for future educational, research and service activities to strengthen the trajectory of the burgeoning sub‐subspecialty of PHO ethics. Creating an American Society of Pediatric Hematology/Oncology (ASPHO) ethics Special Interest Group, enhancing clinical ethics education for pediatric hematologists/oncologists (PHOs), developing multi‐institutional research collaborations, and increasing attention to ethical issues germane to nonmalignant hematology will serve the interests of the entire field of PHO, enhancing the care of PHO patients and careers of PHOs.
The prognostic significance of hematogones in childhood B‐cell acute lymphoblastic leukemia
Authors: Arabi Sina , Yousefian Saeed , Kavosh Aryan , Mansourian Marjan , Nematollahi Pardis 
Published: December 2022

AbstractBackgroundRecent studies have demonstrated hematogones (HGs) expansion to be associated with favorable outcomes in hematological diseases, especially in patients with acute myeloid leukemia and patients undergoing hematopoietic stem cell transplantation. Acute lymphoblastic leukemia (ALL) is the most common form of cancer in children. As of now, minimal residual disease (MRD) remains the most compelling independent prognostic factor in childhood ALL. There is need for more prognostic tools for evaluating relapse risk.ProcedureThe goal of this study was to assess the prognostic value of HGs on relapse‐free survival (RFS) and overall survival (OS) in childhood ALL. In this prospective cohort study, a total of 122 subjects with definitive diagnosis of precursor B lymphoblastic leukemia were evaluated. Flow cytometric HG detection was performed in bone marrow aspirates after induction and consolidation therapy.ResultsThe median follow‐up period of patients was 35.5 ± 9.4 (SD) months. Patients who had at least 1.0% HGs had a significantly better RFS (p = .023). Moreover, univariate and multivariate analyses confirmed that positive HGs were independently associated with longer RFS (unadjusted model: hazard ratio = 0.33, 95% CI = 0.12–0.91, p = .031; adjusted model: hazard ratio = 0.30, 95% CI = 0.11–0.82, p = .020).ConclusionsAlong with the role of MRD, our study shows the significance of HGs as an independent prognostic factor. The results indicate the independent prognostic value of HGs on RFS after adjustment for other prognostic factors, and can be beneficial for risk stratification and treatment modifications amongst pediatric B‐cell ALL patients.
Comparative analysis of Poisson's ratio of 2D woven constructions and their composites produced from different auxetic geometries
Authors: Shukla Shivangi , Behera Bijoya Kumar 
Published: December 2022

AbstractAuxetic materials exhibit some unconventional properties such as improved toughness, resilience, shear resistance, impact resistance, fracture resistance, synclastic behavior, shape fitting ability, sound absorption, and vibration damping owing to their negative Poisson ratio. Auxetic woven fabrics may be made using both auxetic and non‐auxetic yarns. This article focuses on the development and analysis of Poisson's ratio of woven fabrics and their composites based on different auxetic geometries. Some innovative auxetic geometries are developed and fabrics are woven based on these geometries. Auxetic fabric samples and their composites are characterized for their Poisson's ratio values to ascertain the potential of different geometries to produce auxetic woven structures. It is concluded that the auxeticity of the auxetic woven fabric is largely dependent on the weave designs. Also, the auxeticity can be introduced into the composite using woven auxetic preform.
Quality consistency evaluation of commercial Prunellae Spica by integrating determination of secondary metabolites and saccharides
Authors: Lin Xin‐Yu , Zhou Jing , Hao Cai‐Feng , Zhu He , Zhou Shan‐Shan , Xu Jin‐Di , Mao Qian , Li Song‐Lin , Kong Ming 
Published: December 2022

AbstractIntroductionPrunellae Spica (PS) is a commonly used medicinal herb in China. Secondary metabolites and saccharides are major bioactive components of PS. However, holistic quality consistency of commercial PS is ambiguous due to lack of comprehensive evaluation methods and reliable quality control markers.ObjectivesIntegrating multiple chromatographic and chemometric methods to comprehensively evaluate the holistic quality of PS.Material and methodsUltrahigh‐performance liquid chromatography coupled with triple‐quadrupole tandem mass spectrometry (UPLC‐TQ‐MS/MS) was applied to quantify 12 secondary metabolites of PS. High‐performance liquid chromatography coupled with photodiode array/evaporative light scattering detection (HPLC‐PDA/ELSD) and high‐performance gel permeation chromatography (HPGPC) methods were used to characterise the saccharides. Multivariate statistical analysis was adopted to evaluate the quality consistency of commercial PS and explore the potential quality control markers.ResultsThe contents of secondary metabolites and saccharides were significantly different among commercial PS. All samples could be classified into three groups with ferulic acid, protocatechualdehyde, gallic acid, ursolic acid/oleanolic acid, sucrose, p‐coumaric acid, chlorogenic acid as the major contributing components responsible for the difference. The content of rosmarinic acid was correlated with that of betulinic acid, hyperposide, chlorogenic acid, rutin, caffeic acid, p‐coumaric acid and glucose, whereas polysaccharides, ferulic acid, protocatechualdehyde and ursolic acid/oleanolic acid, quercetin, sucrose and majority monosaccharides were not.ConclusionThe holistic quality of commercial PS was inconsistent. Together with rosmarinic acid, ferulic acid, protocatechualdehyde, ursolic acid/oleanolic acid, polysaccharides and sucrose might be recommended as potential quality control markers for the holistic quality control of PS.
Effect of uniaxial stretching on the structural and dielectric properties of melt cast Nylon 11 films
Authors: Jain Mayank , Mutlu Zeynep , Mao Jiahao , Zhou Jierui , Zhou Peinan , Wu Chao , Cao Yang , Cakmak Mukerrem 
Published: December 2022

AbstractIn this study, the effect of processing on the structural and dielectric properties of Nylon 11 melt cast film was studied. Capacitor grade thin films were cast using a film extruder and stretched uniaxially and real‐time mechano‐optical data were acquired at temperatures ranging from solid state all the way to partially molten state. These studies were supplemented with offline WAXS, SAXS, and DSC to develop a complete understanding of processing induced structural changes and their relation to dielectric properties. When stretched in the solid‐state, preferential crystalline and amorphous chain orientation levels increased as a function of strain while the long spacing remained constant due to lamellar slippage. Processing in the partially molten state led to the formation of new lamellae with larger long spacings. It was also observed that the dielectric properties of Nylon 11 were strongly dependent on the crystallinity and crystal phase, with higher crystallinity of the α′ phase giving higher electrical breakdown strength. When films were stretched to 3X solid and partially molten states, together with crystallinity, the breakdown strength is increased, while the dielectric constant and loss decrease. Since crystalline regions are stiffer, they form effective barriers to hot carriers, retarding the electric breakdown.
Research on N,N′‐carbonyldiimidazole: A novel low‐temperature imidization accelerator of polyimide
Authors: Cao Lidong , Fang Xingzhong , Chen Guofei 
Published: December 2022

AbstractHigh imidization temperature of polyimides (PIs) brings great restriction to the applications in electronic industry. In this study, N,N′‐carbonyldiimidazole (CDI), a novel low‐temperature imidization accelerator with the unique dual function of catalyst and dehydrating agent, was researched to solve this problem. PIs synthesized from 4,4′‐(hexafluoroisopropylidene)diphthalic anhydride (6FDA) and 4,4′‐oxydianiline were researched as the main object on method A and method B, two preparation methods of PIs, by introduction of CDI, which was found that the PIs prepared by method A achieved complete imidization and basically had no residual CDI and N,N‐Dimethylacetamide at 180 °C under vacuum, while the completely imidized PIs prepared by method B were also obtained at 40 °C. Even prepared at low temperature, the PI films with adding CDI both showed satisfactory thermal and mechanical properties, especially in reducing coefficient of thermal expansion. In addition, the universality of the reaction between CDI and poly(amic acid) were also verified by other soluble PI systems. All these results prove the superior performance of CDI in lowering imidization temperature, showing great potentials in low‐temperature cured PIs.
Application of Machine Learning to the Design of Energetic Materials: Preliminary Experience and Comparison with Alternative Techniques
Authors: Wespiser Clément , Mathieu Didier 
Published: December 2022

AbstractThe last few years have seen a steep rise in the use of data‐driven methods in different scientific fields historically relying on theoretical or empirical approaches. Chemistry is at the forefront of this paradigm shift due to the longstanding use of computational tools involved in the calculation of molecular structures and properties. In this paper, we showcase examples from the literature as well as work in progress in our lab in order to give a brief overview on how these methods can benefit the energetic materials community. A deep learning approach is compared to “traditional” QSPR and semi‐empirical approaches for molecular property prediction, and specificities inherent to energetic materials are discussed. Deep generative models for the design of new energetic materials are also presented. We conclude by giving our view on the most promising strategies for future in silico generation of new energetic materials satisfying the performance/sensitivity trade‐off.
Minimally Deformed Wormholes Inspired by Noncommutative Geometry
Authors: Tello‐Ortiz Francisco , Mishra B. , Alvarez A. , Singh Ksh. Newton 
Published: December 2022

AbstractIn this article, new wormhole solutions in the framework of General Relativity are presented. Taking advantage of gravitational decoupling by means of minimal geometric deformation approach and, the so–called noncommutative geometry Gaussian and Lorentzian density profiles, the seminal Morris–Thorne space–time is minimally deformed providing new asymptotically wormhole solutions. Constraining the signature of some parameters, the dimensionless constant α is bounded using the flare–out and energy conditions. In both cases, this results in an energy–momentum tensor that violates energy conditions, thus the space–time is threading by an exotic matter distribution. However, it is possible to obtain a positive defined density at the wormhole throat and its neighborhood. To further support the study a thoroughly graphical analysis has been performed.