bluuebunny/crossref_metadata_2025_split huggingface dataset:
Une féminité contre une autre. Femmes, féminité et féminisme au sein de la pensée africaine-américaine du xixe siècle
Authors: Provost Mickaëlle 
Published: November 2024

L’autrice cherche à éclairer l’articulation des signifiants « femmes » et « féminité » au sein du mouvement suffragiste aux États-Unis et de la pensée africaine-américaine du XIXe siècle. Afin de comprendre les usages concurrents de ces catégories et les expériences ou les conflits qu’elles enveloppent, l’autrice s’intéresse d’abord aux réappropriations par les féministes blanches de l’idée de féminité dans la lutte pour le suffrage féminin et à l’exclusion des femmes noires (leurs perspectives, pensées et expériences) au sein du mouvement suffragiste. Elle revient ensuite sur les déplacements réalisés par les militantes, oratrices et intellectuelles africaines-américaines dans la redéfinition d’une féminité exemplaire, porteuse d’universalité, venant déstabiliser les critères d’appartenance au groupe des femmes. En s’appuyant en particulier sur la pensée d’Anna Julia Cooper (1858-1964), l’autrice entend souligner la force de la conceptualisation africaine-américaine de la féminité dans la lutte contre les oppressions entremêlées de sexe, de race et de classe et dans l’affirmation d’une politique radicalement transformatrice, qui dépasse la seule revendication pour le suffrage.
Framework for the quantitative assessment of adaptive radiation therapy protocols
Authors: Weppler Sarah , Quon Harvey , Banerjee Robyn , Schinkel Colleen , Smith Wendy 
Published: August 2018

AbstractBackgroundAdaptive radiation therapy (ART) “flags,” such as change in external body contour or relative weight loss, are widely used to identify which head and neck cancer (HNC) patients may benefit from replanned treatment. Despite the popularity of ART, few published quantitative approaches verify the accuracy of replan candidate identification, especially with regards to the simple flagging approaches that are considered current standard of practice. We propose a quantitative evaluation framework, demonstrated through the assessment of a single institution's clinical ART flag: change in body contour exceeding 1.5 cm.MethodsGround truth replan criteria were established by surveying HNC radiation oncologists. Patient‐specific dose deviations were approximated by using weekly acquired CBCT images to deform copies of the CT simulation, yielding during treatment “synthetic CTs.” The original plan reapplied to the synthetic CTs estimated interfractional dose deposition and truth table analysis compared ground truth flagging with the clinical ART metric. This process was demonstrated by assessing flagged fractions for 15 HNC patients whose body contour changed by >1.5 cm at some point in their treatment.ResultsSurvey results indicated that geometric shifts of high‐dose volumes relative to image‐guided radiation therapy alignment of bony anatomy were of most interest to HNC physicians. This evaluation framework successfully identified a fundamental discrepancy between the “truth” criteria and the body contour flagging protocol selected to identify changes in central axis dose. The body contour flag had poor sensitivity to survey‐derived major violation criteria (0%–28%). The sensitivity of a random sample for comparable violation/flagging frequencies was 27%.ConclusionsThese results indicate that centers should establish ground truth replan criteria to assess current standard of practice ART protocols. In addition, more effective replan flags may be tested and identified according to the proposed framework. Such improvements in ART flagging may contribute to better clinical resource allocation and patient outcome.
Safety of Ixekizumab in Patients With Psoriatic Arthritis: Results From a Pooled Analysis of Three Clinical Trials
Authors: Mease Philip , Roussou Euthalia , Burmester Gerd‐Rüdiger , Goupille Philippe , Gottlieb Alice , Moriarty Susan R. , Benichou Olivier , Adams David H. , Xu Wen , Nash Peter 
Published: August 2018

ObjectiveTo evaluate ixekizumab safety in adults with psoriatic arthritis (PsA).MethodsSafety data from 2 integrated data sets are presented: 1) 24‐week, double‐blind, placebo‐controlled period of SPIRIT‐P1 and SPIRIT‐P2; and 2) all ixekizumab‐treated patients of SPIRIT‐P1 and SPIRIT‐P2 plus SPIRIT‐P3 open‐label period. We report adverse event (AE) frequency and exposure‐adjusted incidence rates per 100 patient‐years at 12‐week intervals to week 96.ResultsThe placebo‐controlled period had 678 patients (safety population): 224 placebo, 229 ixekizumab every 4 weeks, and 225 ixekizumab every 2 weeks. Overall, 1,118 patients received ixekizumab (total exposure 1,373.4 patient‐years). In the placebo‐controlled period, the frequencies of ixekizumab‐treated patients experiencing ≥1 treatment‐emergent AE (TEAE) and those experiencing serious AEs were 68.1% (56.7% placebo) and 4.4% (2.7% placebo), respectively. Injection site reactions (ISRs) were very common (21.4% ixekizumab [4.5% placebo]), with ISR discontinuation rates of 1.1% (ixekizumab) and 0.4% (placebo). Through week 96, the incidence rates of ISRs decreased with increasing ixekizumab exposure. The frequencies of AEs of special interest were 32.8% (ixekizumab) and 27.7% (placebo); for serious infections, the frequencies were 1.3% and 0%, respectively; Candida infections, 2.6% and 0.4%; confirmed major adverse cardiac events, 0% and 0%; malignancy, 0.4% and 0%; hypersensitivities, 5.3% and 1.8%; and depression‐related, 1.8% and 1.3%. The frequency of Crohn's disease and ulcerative colitis (investigator‐reported) was 0% in both groups, and the frequencies of sponsor‐determined inflammatory bowel disease were 0.2% in the ixekizumab group and 0% in the placebo group. Overall, no active tuberculosis, invasive Candida infections, anaphylaxis, or suicide/self‐injury behaviors were reported.ConclusionThe PsA ixekizumab safety integrated data set reached 1,373.4 patient‐years total exposure. Ixekizumab‐treated patients had higher rates of overall TEAEs, serious infections, mucocutaneous Candida, hypersensitivities (non‐anaphylactic), and ISRs than placebo‐treated patients. No unexpected safety outcomes were reported.
Low‐complexity ISS state estimation approach with bounded disturbances
Authors: Shen Qiang , Liu Jieyu , Zhou Xiaogang , Zhao Qian , Wang Qi 
Published: August 2018

SummaryThis paper presents a low‐complexity input‐to‐state stable ellipsoidal outer‐bounding state estimation approach with unknown but bounded disturbances. The bounds on the noise are specified by ellipsoids. The feasible set is updated through computing the Minkowski sum and intersection of two ellipsoids. At the observation stage, the observation noise bounding ellipsoid is replaced by a parallelotope containing it. Then, each observation update is transformed into multiple consecutive iterations to intersect ellipsoid with strips, which significantly reduces its per‐update computational complexity. Furthermore, an adaptive selection scheme of the parameters is derived to ensure the stability of the estimation error. As a result, the proposed approach entails stability and delivers a trade‐off between performance and complexity.
Structural Confinement toward Giant Enhancement of Red Emission in Mn2+‐Based Phosphors
Authors: Zhang Zhichao , Ma Chonggeng , Gautier Romain , Molokeev Maxim S. , Liu Quanlin , Xia Zhiguo 
Published: August 2018

AbstractStructural confinement effect on a pair of Eu2+ and Mn2+ optical centers is developed to realize the greatly enhanced red emission attributed to the 4T1(4G)–6A1(6S) transition of Mn2+ ions. Sr9Mn1.26(2)Li0.24(2)(PO4−δ)7 , when it is doped with Eu2+, emerges as a new red‐emitting phosphor, and the intensity dependence of such a red emission on the trace amounts of Eu2+ doping is quantitatively analyzed with a combined experimental and theoretical methods. The modeling result confirms the validity of this proposed design strategy, and the intrinsic high‐efficient Eu2+–Mn2+ energy transfer process can be elucidated by the structural confinement effect featured as some Sr (Eu) close to Mn atoms. The results can initiate the exploration of Mn2+‐based red phosphors for pc‐white light‐emitting diodes applications, and such a strategy can be easily expanded to other systems, thus opening a new perspective for the development of luminescence materials.
Designing Catalysts for Chirality‐Selective Synthesis of Single‐Walled Carbon Nanotubes: Past Success and Future Opportunity
Authors: He Maoshuai , Zhang Shuchen , Wu Qianru , Xue Han , Xin Benwu , Wang Dan , Zhang Jin 
Published: August 2018

AbstractA major obstacle for the applications of single‐walled carbon nanotubes (SWNTs) in electronic devices is their structural diversity, ending in SWNTs with diverse electrical properties. Catalytic chemical vapor deposition has shown great promise in directly synthesizing high‐quality SWNTs with a high selectivity to specific chirality (n, m). During the growth process, the tube–catalyst interface plays crucial roles in regulating the SWNT nucleation thermodynamics and growth kinetics, ultimately governing the SWNT chirality distribution. Starting with the introduction of SWNT growth modes, this review seeks to extend the knowledge about chirality‐selective synthesis by clarifying the energetically favored SWNT cap nucleation and the threshold step for SWNT growth, which describes how the tube–catalyst interface affects both the nucleus energy and the new carbon atom incorporation. Such understandings are subsequently applied to interpret the (n, m) specific growth achieved on a variety of templates, such as SWNT segments or predefined molecular seeds, transition metal (Fe, Co and Ni)‐containing catalysts at low reaction temperatures, W‐based alloy catalysts, and metal carbides at relatively high reaction temperatures. The up to date achievements on chirality‐controlled synthesis of SWNTs is summarized and the remaining major challenges existing in the SWNT synthesis field are discussed.
Electron Tomography: A Unique Tool Solving Intricate Hollow Nanostructures
Authors: Song Hao , Yang Yannan , Geng Jing , Gu Zhengying , Zou Jin , Yu Chengzhong 
Published: August 2018

AbstractInnovations in nanofabrication have expedited advances in hollow‐structured nanomaterials with increasing complexity, which, at the same time, set challenges for the precise determination of their intriguing and complicated 3D configurations. Conventional transmission electron microscopy (TEM) analysis typically yields 2D projections of 3D objects, which in some cases is insufficient to reflect the genuine architectures of these 3D nano‐objects, providing misleading information. Advanced analytical approaches such as focused ion beam (FIB) and ultramicrotomy enable the real slicing of nanomaterials, realizing the direct observation of inner structures but with limited spatial discrimination. Electron tomography (ET) is a technique that retrieves spatial information from a series of 2D electron projections at different tilt angles. As a unique and powerful tool kit, this technique has experienced great advances in its application in materials science, resolving the intricate 3D nanostructures. Here, the exceptional capability of the ET technique in the structural, chemical, and quantitative analysis of hollow‐structured nanomaterials is discussed in detail. The distinct information derived from ET analysis is highlighted and compared with conventional analysis methods. Along with the advances in microscopy technologies, the state‐of‐the‐art ET technique offers great opportunities and promise in the development of hollow nanomaterials.
Additive Manufacturing and Performance of Architectured Cement‐Based Materials
Authors: Moini Mohamadreza , Olek Jan , Youngblood Jeffrey P. , Magee Bryan , Zavattieri Pablo D. 
Published: August 2018

AbstractThere is an increasing interest in hierarchical design and additive manufacturing (AM) of cement‐based materials. However, the brittle behavior of these materials and the presence of interfaces from the AM process currently present a major challenge. Contrary to the commonly adopted approach in AM of cement‐based materials to eliminate the interfaces in 3D‐printed hardened cement paste (hcp) elements, this work focuses on harnessing the heterogeneous interfaces by employing novel architectures (based on bioinspired Bouligand structures). These architectures are found to generate unique damage mechanisms, which allow inherently brittle hcp materials to attain flaw‐tolerant properties and novel performance characteristics. It is hypothesized that combining heterogeneous interfaces with carefully designed architectures promotes such damage mechanisms as, among others, interfacial microcracking and crack twisting. This, in turn, leads to damage delocalization in brittle 3D‐printed architectured hcp and therefore results in quasi‐brittle behavior, enhanced fracture and damage tolerance, and unique load‐displacement response, all without sacrificing strength. It is further found that in addition to delocalization of the cracks, the Bouligand architectures can also enhance work of failure and inelastic deflection of the architectured hcp elements by over 50% when compared to traditionally cast elements from the same materials.
Biological Tissues as Active Nematic Liquid Crystals
Authors: Saw Thuan Beng , Xi Wang , Ladoux Benoit , Lim Chwee Teck 
Published: August 2018

AbstractLive tissues can self‐organize and be described as active materials composed of cells that generate active stresses through continuous injection of energy. In vitro reconstituted molecular networks, as well as single‐cell cytoskeletons show that their filamentous structures can portray nematic liquid crystalline properties and can promote nonequilibrium processes induced by active processes at the microscale. The appearance of collective patterns, the formation of topological singularities, and spontaneous phase transition within the cell cytoskeleton are emergent properties that drive cellular functions. More integrated systems such as tissues have cells that can be seen as coarse‐grained active nematic particles and their interaction can dictate many important tissue processes such as epithelial cell extrusion and migration as observed in vitro and in vivo. Here, a brief introduction to the concept of active nematics is provided, and the main focus is on the use of this framework in the systematic study of predominantly 2D tissue architectures and dynamics in vitro. In addition how the nematic state is important in tissue behavior, such as epithelial expansion, tissue homeostasis, and the atherosclerosis disease state, is discussed. Finally, how the nematic organization of cells can be controlled in vitro for tissue engineering purposes is briefly discussed.
Large Intercalation Pseudocapacitance in 2D VO2 (B): Breaking through the Kinetic Barrier
Authors: Xia Chuan , Lin Zifeng , Zhou Yungang , Zhao Chao , Liang Hanfeng , Rozier Patrick , Wang Zhiguo , Alshareef Husam N. 
Published: August 2018

AbstractVO2 (B) features two lithiation/delithiation processes, one of which is kinetically facile and has been commonly observed at 2.5 V versus Li/Li+ in various VO2 (B) structures. In contrast, the other process, which occurs at 2.1 V versus Li/Li+, has only been observed at elevated temperatures due to large interaction energy barrier and extremely sluggish kinetics. Here, it is demonstrated that a rational design of atomically thin, 2D nanostructures of VO2 (B) greatly lowers the interaction energy and Li+‐diffusion barrier. Consequently, the kinetically sluggish step is successfully enabled to proceed at room temperature for the first time ever. The atomically thin 2D VO2 (B) exhibits fast charge storage kinetics and enables fully reversible uptake and removal of Li ions from VO2 (B) lattice without a phase change, resulting in exceptionally high performance. This work presents an effective strategy to speed up intrinsically sluggish processes in non‐van der Waals layered materials.
A Metamaterial Analog of the Ising Model
Authors: Cong Longqing , Savinov Vassili , Srivastava Yogesh Kumar , Han Song , Singh Ranjan 
Published: August 2018

AbstractThe interaction between microscopic particles is always a fascinating and intriguing area of science. Direct interrogation of such interactions is often difficult. Structured electromagnetic systems offer a rich toolkit for mimicking and reproducing the key dynamics that govern the microscopic interactions, and thus provides an avenue to explore and interpret the microscopic phenomena. In particular, metamaterials offer the freedom to artificially tailor light–matter coupling and to control the interaction between unit cells in the metamaterial array. Here, a terahertz metamaterial that mimics spin‐related interactions of microscopic particles in a 2D lattice via complex electromagnetic multipoles scattered within the metamaterial array is demonstrated. Fano resonances featured by distinct mode properties due to strong nearest‐neighbor interactions are discussed, which draw parallels with the 2D Ising model. Interestingly, a phase transition from single Fano resonance to hyperfine splitting of the Fano spectrum is observed by manipulating the 2D interactions without applying external magnetic or electric fields, which provides a potential multispectral platform for applications in super‐resolution imaging, biosensing, and selective thermal emission. The dynamic approach to reproduce static interaction between microscopic particles will enable more profound significance in exploring the unknown physical world by the macroscopic analogs.
Resonant Silicon Nanoparticles for Enhanced Light Harvesting in Halide Perovskite Solar Cells
Authors: Furasova Aleksandra , Calabró Emanuele , Lamanna Enrico , Tiguntseva Ekaterina , Ushakova Elena , Ubyivovk Eugene , Mikhailovskii Vladimir , Zakhidov Anvar , Makarov Sergey , Di Carlo Aldo 
Published: August 2018

AbstractImplementation of resonant nanoparticles (NPs) for improving performance of organometal halide perovskites solar cells is highly prospective approach, because it is compatible with the solution processing techniques used for any organic materials. Previously, resonant metallic NPs have been incorporated into perovskite solar cells for better light absorption and charge separation. However, high inherent optical losses and high reactivity of noble metals with halides in perovskites are main limiting factors for this approach. Incidentally, low‐loss and chemically inert resonant silicon NPs allow for light trapping and enhancement at nanoscale, being suitable for thin film photovoltaics. Here photocurrent and fill‐factor (FF) enhancements in meso‐superstructured perovskite solar cells, incorporating resonant silicon NPs between mesoporous TiO2 transport and active layers, are demonstrated. This results in a boost of device efficiency up to 18.8% and FF up to 79%, being a record among the previously reported values on NPs incorporation into CH3NH3PbI3 perovskite‐based solar cells. Theoretical modeling and optical characterization reveal the significant role of Si NPs for increased light absorption in the active layer rather than for better charge separation. The proposed strategy is universal and can be applied in perovskite solar cells with various compositions, as well as in other optoelectronic devices.
Refractory Metamaterial Microwave Absorber with Strong Absorption Insensitive to Temperature
Authors: Li Yukun , Li Wei , Wang Yi , Cao Jie , Guan Jianguo 
Published: August 2018

AbstractThe so far developed microwave absorbers all exhibit dramatically changing absorption with temperature, hindering them from working in a broad temperature range. Here, a refractory metamaterial microwave absorber (rfMMA) with the absorption insensitive to temperature by using refractory ceramics of conductive titanium diboride (TiB2) as unit cells and dielectric alumina (Al2O3) as a spacer is designed and experimentally demonstrated. The as‐proposed rfMMA shows strong microwave absorption in a wide temperature range. A definite physical equivalent circuit model that tightly links the structural and constitutive parameters of the rfMMA to its absorption properties is established. It reveals that with a stable configuration of the as‐proposed rfMMA, the little temperature effect on the permittivity of Al2O3 spacer and the big enough conductivity of TiB2 unit cells ensure an almost constant absorption in a wide temperature range, avoiding the temperature‐sensitive problem of traditional refractory absorbers. Moreover, the excellent chemical stability of TiB2 and Al2O3 at high temperature further ensures the long‐term service of the as‐fabricated rfMMA, as confirmed by experiments. This work provides a route to achieve refractory microwave absorbers with strong absorption at a wide temperature range, and illustrates a bright prospect of the all‐ceramic metamaterial absorbers in high temperature applications.
Knee pain in nursing home workers after implementation of a safe resident handling program
Authors: Gold Judith E. , Kurowski Alicia , Gore Rebecca J. ,   ProCare Research Team, Punnett Laura 
Published: August 2018

PurposeApproximately 25‐30% of nursing personnel experience knee pain (KP). We sought to identify physical and psychosocial work exposures, and personal factors related to prevalent, incident, and persistent KP 5‐8 years after safe resident handing program (SRHP) implementation in nursing homes.MethodsHealth and exposure information was obtained from worker surveys 5‐6 years (“F5”) and 7‐8 years (“F6”) post‐SRHP implementation. Prevalent KP correlates were examined at F5; persistent and incident KP predictors were analyzed at F6, utilizing robust Poisson multivariable regression.ResultsF5 KP prevalence (19.7%) was associated with combined physical exposures, and with either high job strain or low social support, in separate models. Two‐year persistent KP was similarly associated with these psychosocial exposures. Being overweight was associated with KP in all analyses.ConclusionsThe SRHP program did not eliminate knee physical loading, which should be reduced to prevent nursing home worker KP. Workplace psychosocial exposures (high job strain, low social support) also appeared germane.
Variation in levels of AMH among Maya and non‐Maya women in Campeche, Mexico
Authors: Kyweluk Moira A. , Sievert Lynnette Leidy , Huicochea‐Gómez Laura , Cahuich‐Campos Diana , McDade Thomas , Brown Daniel E. 
Published: August 2018

AbstractObjectivesThe purpose of this study was to examine anti‐Müllerian hormone (AMH) levels among women of Maya and non‐Maya ancestry in the city of Campeche, Mexico. Levels of AMH can potentially predict age at menopause. Previous studies have indicated an early mean age at menopause among the Maya.Materials and methodsWomen aged 40‐60 (n = 97) participated in semistructured interviews, anthropometric measures, and blood samples. Maya/non‐Maya ethnicity was determined by the last names, languages spoken, and birthplace of the woman, her parents, and her grandparents. AMH values were categorized as detectable (0.05‐4.19 ng/mL) and undetectable (<0.05 ng/mL). Logistic regressions calculated odds ratios (OR) for undetectable AMH.ResultsWomen were categorized as Maya (n = 44), not Maya (n = 39), or not able to be clearly defined (n = 14). In bivariate comparisons, women with detectable levels of AMH were younger, more likely to be pre‐menopausal, and not Maya. Age, menopausal status, and ethnicity remained significant in a logistic regression models after controlling for age at menarche. Maya women were more than five times as likely to have nondetectable AMH levels as non‐Maya women.DiscussionIncreasing age and progression through the menopausal transition were both associated with declining levels of AMH. The association between Maya ethnicity and a lower likelihood of detecting AMH is consistent with the early ages at menopause reported in previous studies. We considered a rapid life history model as an explanatory framework, and suggest, from an ecological perspective, that future research should consider measures of developmental stress that may compromise ovarian reserves.