bluuebunny/crossref_metadata_2025_split huggingface dataset:
Biosynthesis of the Sex Pheromone Component (E,Z)-7,9-Dodecadienyl Acetate in the European Grapevine Moth, Lobesia botrana, Involving ∆11 Desaturation and an Elusive ∆7 Desaturase
Authors: Ding Bao-Jian , Xia Yi-Han , Wang Hong-Lei , Andersson Fredrik , Hedenström Erik , Gross Jürgen , Löfstedt Christer 
Published: March 2021

AbstractThe European grapevine moth,Lobesia botrana, uses (E,Z)-7,9-dodecadienyl acetate as its major sex pheromone component. Through in vivo labeling experiments we demonstrated that the doubly unsaturated pheromone component is produced by ∆11 desaturation of tetradecanoic acid, followed by chain shortening of (Z)-11-tetradecenoic acid to (Z)-9-dodecenoic acid, and subsequently introduction of the second double bond by an unknown ∆7 desaturase, before final reduction and acetylation. By sequencing and analyzing the transcriptome of female pheromone glands ofL. botrana, we obtained 41 candidate genes that may be involved in sex pheromone production, including the genes encoding 17 fatty acyl desaturases, 13 fatty acyl reductases, 1 fatty acid synthase, 3 acyl-CoA oxidases, 1 acetyl-CoA carboxylase, 4 fatty acid transport proteins and 2 acyl-CoA binding proteins. A functional assay of desaturase and acyl-CoA oxidase gene candidates in yeast and insect cell (Sf9) heterologous expression systems revealed that Lbo_PPTQ encodes a ∆11 desaturase producing (Z)-11-tetradecenoic acid from tetradecanoic acid. Further, Lbo_31670 and Lbo_49602 encode two acyl-CoA oxidases that may produce (Z)-9-dodecenoic acid by chain shortening (Z)-11-tetradecenoic acid. The gene encoding the enzyme introducing the E7 double bond into (Z)-9-dodecenoic acid remains elusive even though we assayed 17 candidate desaturases in the two heterologous systems.
Generalized cross validation for ℓp-ℓq minimization
Authors: Buccini Alessandro , Reichel Lothar 
Published: March 2021

AbstractDiscrete ill-posed inverse problems arise in various areas of science and engineering. The presence of noise in the data often makes it difficult to compute an accurate approximate solution. To reduce the sensitivity of the computed solution to the noise, one replaces the original problem by a nearby well-posed minimization problem, whose solution is less sensitive to the noise in the data than the solution of the original problem. This replacement is known as regularization. We consider the situation when the minimization problem consists of a fidelity term, that is defined in terms of ap-norm, and a regularization term, that is defined in terms of aq-norm. We allow 0 <p,q≤ 2. The relative importance of the fidelity and regularization terms is determined by a regularization parameter. This paper develops an automatic strategy for determining the regularization parameter for these minimization problems. The proposed approach is based on a new application of generalized cross validation. Computed examples illustrate the performance of the method proposed.
Supercontinuum generation in photonic crystal fibers infiltrated with tetrachloroethylene
Authors: Le Hieu Van , Hoang Van Thuy , Nguyen Hue Thi , Long Van Cao , Buczynski Ryszard , Kasztelanic Rafał 
Published: March 2021

AbstractThis study proposes a photonic crystal fiber made of fused silica glass, with the core infiltrated with tetrachloroethylene (C2Cl4) as a new source of supercontinuum (SC) spectrum. We studied numerically the guiding properties of the several different fiber structures in terms of characteristic dispersion, mode area, and attenuation of the fundamental mode. Based on the results, the structural geometries of three C2Cl4-core photonic crystal fibers were optimized in order to support the broadband SC generations. The first fiber structure with lattice constant 1.5 μm and filling factor 0.4 operates in all-normal dispersion. The SC with a broadened spectral bandwidth of 0.8–2 μm is generated by a pump pulse with a central wavelength of 1.56 μm, 90 fs duration and energy of 1.5 nJ. The second proposed structure, with lattice constant 4.0 μm and filling factor 0.45, performs an anomalous dispersion for wavelengths longer than 1.55 μm. With the same pump pulse as the first fiber, we obtained the coherence SC spectrum in an anomalous dispersion range with wavelength range from 1 to 2 μm. Meanwhile, the third selected fiber (lattice constant 1.5 μm, filling factor 0.55) has two zero dispersion wavelengths at 1.04 μm and 1.82 μm. The octave-spanning of the SC spectrum formed in this fiber was achieved in the wavelength range of 0.7–2.4 μm with an input pulse whose optical properties are 1.03 μm wavelength, 120 fs duration and energy of 2 nJ. Those fibers would be good candidates for all-fiber SC sources as cost-effective alternatives to glass core fibers.
Unconscious perception and central coordinating agency
Authors: Shepherd Joshua , Mylopoulos Myrto 
Published: March 2021

AbstractOne necessary condition on any adequate account of perception is clarity regarding whether unconscious perception exists. The issue is complicated, and the debate is growing in both philosophy and science. In this paper we consider the case for unconscious perception, offering three primary achievements. First, we offer a discussion of the underspecified notion of central coordinating agency, a notion that is critical for arguments that purportedly perceptual states are not attributable to the individual, and thus not genuinely perceptual. We develop an explication of what it is for a representational state to be available to central coordinating agency for guidance of behavior. Second, drawing on this explication, we place a more careful understanding of the attributability of a state to the individual in the context of a range of empirical work on vision-for-action, saccades, and skilled typing. The results place pressure on the skeptic about unconscious perception. Third, reflecting upon broader philosophical themes running through debates about unconscious perception, we highlight how our discussion places pressure on the view that perception is a manifest kind, rather than a natural kind. In doing so, we resist the tempting complaint that the debate about unconscious perception is merely verbal.
DYRE: a DYnamic REconfigurable solution to increase GPGPU’s reliability
Authors: Condia Josie E. Rodriguez , Narducci Pierpaolo , Sonza Reorda Matteo , Sterpone Luca 
Published: March 2021

AbstractGeneral-purpose graphics processing units (GPGPUs) are extensively used in high-performance computing. However, it is well known that these devices’ reliability may be limited by the rising of faults at the hardware level. This work introduces a flexible solution to detect and mitigate permanent faults affecting the execution units in these parallel devices. The proposed solution is based on adding some spare modules to perform two in-field operations: detecting and mitigating faults. The solution takes advantage of the regularity of the execution units in the device to avoid significant design changes and reduce the overhead. The proposed solution was evaluated in terms of reliability improvement and area, performance, and power overhead costs. For this purpose, we resorted to a micro-architectural open-source GPGPU model (FlexGripPlus). Experimental results show that the proposed solution can extend the reliability by up to 57%, with overhead costs lower than 2% and 8% in area and power, respectively.
Oxidative Dehydrogenation of 1-Butene to 1,3-Butadiene Over Metal Ferrite Catalysts
Authors: Black Cory , Currie Grace , Whiston Keith , Sproules Stephen , Jackson S. David 
Published: March 2021

AbstractThe oxidative dehydrogenation (ODH) of 1-butene to 1,3-butadiene was studied over a series of AFe2O4 catalysts, where A = Zn, Mn, Ni, Cu, Mg and Fe. The catalysts were characterised by XPS, EPR spectroscopy, BET surface area analysis, Raman spectroscopy and XRD. All the ferrites were active for ODH and gave an order of activity after 80 h on-stream of ZnFe2O4 > NiFe2O4 > MnFe2O4 > MgFe2O4 > CuFe2O4 > FeFe2O4. All catalysts lost significant surface area (up to ~ 80%) under reaction conditions of 0.75:1:15 oxygen:1-butene:steam with an overall GHSV of 10,050 h−1 at 693 K. Fe3O4 was unstable under reaction conditions and was converted to Fe2O3, which showed very low activity. Nickel ferrite was the only material that gave carbon dioxide as a significant product, all others were selective to 1,3-butadiene. Zinc ferrite gave a steady-state yield of 1,3-butadiene of ~ 80%. Inversion parameters were determined for the ferrites from XPS and a correlation was obtained between 1,3-butadiene yield and inversion parameter, indicating that Fe3+ in an octahedral hole is a key species in the mechanism of oxidative dehydrogenation. Butene isomerisation and ODH were shown to occur on different sites.
On the dimension of points which escape to infinity at given rate under exponential iteration
Authors: BARAŃSKI KRZYSZTOF , KARPIŃSKA BOGUSŁAWA 
Published: March 2021

AbstractWe prove a number of results concerning the Hausdorff and packing dimension of sets of points which escape (at least in average) to infinity at a given rate under non-autonomous iteration of exponential maps. In particular, we generalize the results proved by Sixsmith in 2016 and answer his question on annular itineraries for exponential maps.
Franco-British responses to chemical warfare 1915–8, with special reference to the medical services, casualty statistics and the threat to civilians
Authors: Zoghlami Hanene 
Published: March 2021

AbstractThis dual-focussed examination will critically compare and contrast the British Royal Army Medical Corps and the French Medical Service’s involvement in the Western Front chemical campaign between 1915 and 1918. Because the Anglophone historiography has tended to marginalise the French contribution to the allied chemical war, this article will attempt to re-balance the historical narrative by emphasising the collective nature and importance of this joint Franco-British enterprise. By interrogating a raft of under-utilised primary evidence in the French and British archives, this investigation will contribute to the ‘alliance literature’ by arguing that when it comes to aspects of the Franco-British chemical war such as the co-operation of the medical services, the appellation ‘together but alone’ does not fully hold. The article will explore avenues of the two national armies evolving process of mutual medical assistance, material exchange and scientific collaboration. The striking similarity of French and British gas casualty statistics is highlighted with reference to the overall congruence of their anti-gas strategies – notwithstanding the problematic nature of these statistics. In addition to enhancing soldiers’ resistance to the poison gas threat on the battlefield, the Medical Services were also responsible for the protection of local civilians in the war zones. With reference mainly to France, this investigation will discuss the significance and implications of the poison gas threat to the home front. Finally, the impact of chemical weapon production upon civilian war workers in France and Britain will be commented upon.
SUBPROJECTIVITY OF PROJECTIVE TENSOR PRODUCTS OF BANACH SPACES OF CONTINUOUS FUNCTIONS
Authors: CAUSEY R.M. 
Published: March 2021

AbstractGalego and Samuel showed that if K, L are metrizable, compact, Hausdorff spaces, then
$C(K)\widehat{\otimes}_\pi C(L)$
is c0-saturated if and only if it is subprojective if and only if K and L are both scattered. We remove the hypothesis of metrizability from their result and extend it from the case of the twofold projective tensor product to the general n-fold projective tensor product to show that for any
$n\in\mathbb{N}$
and compact, Hausdorff spaces K1, …, Kn,
$\widehat{\otimes}_{\pi, i=1}^n C(K_i)$
is c0-saturated if and only if it is subprojective if and only if each Ki is scattered.
New proposal to revise the classification for squamous cell carcinoma of the external auditory canal and middle ear
Authors: Shinomiya H , Uehara N , Fujita T , Yoshida K , Imamura Y , Teshima M , Kimura H , Miyawaki D , Kakigi A , Kiyota N , Otsuki N , Sasaki R , Kohmura E , Nibu K 
Published: March 2021

AbstractBackgroundThe prognosis of patients with advanced squamous cell carcinoma of the external auditory canal and middle ear has been improved by advances in skull base surgery and multidrug chemoradiotherapy during the last two decades.MethodsNinety-five patients with squamous cell carcinoma of the external auditory canal and middle ear who were treated between 1998 and 2017 were enrolled. The number of patients with tumour stages T1, T2, T3and T4was 15, 22, 24 and 34, respectively. Oncological outcomes and prognostic factors were retrospectively investigated.ResultsAmong patients with T4disease, invasion of the brain (p= 0.024), carotid artery (p= 0.049) and/or jugular vein (p= 0.040) were significant predictors of poor prognosis. The five-year overall survival rate of patients with at least one of these factors (T4b) was significantly lower than that of patients without these factors (T4a) (25.5vs65.5 per cent,p= 0.049).ConclusionIt is proposed that stage T4be subclassified into T4aand T4baccording to the prognostic factors.
The influence of environmental variables on bdelloid rotifers of the genus Rotaria in Thailand
Authors: Jaturapruek Rapeepan , Fontaneto Diego , Maiphae Supiyanit 
Published: March 2021

AbstractThis research investigates the influence of environmental parameters that are known to affect bdelloid rotifer species richness and composition in temperate zones on the genus Rotaria in tropical zone. Our study analysed species richness and composition of the genus Rotaria from 390 samples collected from several types of aquatic habitats in Thailand. Coordinates, elevation, limnological parameters such as water temperature, conductivity, total dissolved solids, salinity, dissolved oxygen and pH were measured. A total of nine species was recorded. Of these, one species, Rotaria macrura (Ehrenberg, 1832), was a new record for Thailand and new to the oriental region, and was a yet undescribed species, Rotaria sp. The species diversity of this genus increased from eight to 10 species. The presence or absence of the genus Rotaria was significantly influenced by dissolved oxygen and habitat type. For the samples where the genus occurred, species richness was not affected by any of the limnological or bioclimatic variables. Differences in species composition were affected only by habitat type. The results support former suggestions that common abiotic parameters do not seem to strongly influence diversity in bdelloids, whereas major ecological differences between habitats influence bdelloid occurrence.
The comparative and cumulative impact of different forms of violence exposure during childhood and adolescence on long-term adult outcomes
Authors: Oberth Carla , Goulter Natalie , McMahon Robert J. 
Published: March 2021

AbstractViolence exposure during childhood and adolescence is associated with a range of negative psychosocial outcomes. Research examining the impact of violence exposure has been limited by the compartmentalization into separate bodies of research (e.g., community violence, domestic violence). There is also a paucity of research examining long-term adult outcomes. Using a large and racially diverse sample (n = 754; male = 58%; Black = 46%), the current longitudinal study aimed to elucidate the comparative and cumulative effect of different types of violence exposure (witnessing vs. victimization) across different locations (home, school, neighborhood) in childhood and adolescence (lifetime through Grade 8) on long-term internalizing, externalizing, and attention problems; substance use; and intimate partner violence in adulthood (age 25). Victimization, but not witnessing violence, predicted all five adult outcomes. Specifically, being victimized at home was associated with the widest range of negative outcomes (internalizing, externalizing, and attention problems), while school victimization was associated with substance use. Further, when youth experienced multiple types of violence across multiple locations (cumulative violence exposure), they experienced a more diverse range of negative outcomes in adulthood (composite score). The current study highlights the stronger effects of violence exposure in more proximal contexts, and how these locations are important for emotional and behavioral development.
Pseudoaneurysm of the sinus of Valsalva caused by infective endocarditis in a 7-year-old child with congenital heart disease
Authors: Kashimada Wataru , Fujioka Tao , Kobayashi Jotaro 
Published: March 2021

AbstractWe report a case of a pseudoaneurysm in the sinus of Valsalva, secondary to infective endocarditis in a child with trisomy 21. The patient had a history of subaortic stenosis, bicuspid aortic valve, and ventricular septal defect. Patch closure of the ostium of the pseudoaneurysm and aortic valve replacement was performed. The patient was discharged without severe complications.
Developing a Knowledge Strategy for a Law Firm
Authors: Johnson Aileen , Heatley Simon 
Published: March 2021

AbstractIn this article Aileen Johnson, Head of Knowledge at Charles Russell Speechlys, describes the process of creating a knowledge strategy for a law firm. Simon Heatley, a Knowledge Development Lawyer in Charles Russell Speechlys' Disputes team, comments on this at a practice area level. Although drafted from a law firm perspective, this process could be adapted and replicated in other organisations.
The common sense of economics and divergent approaches in economic thought: a view from Risk, Uncertainty, and Profit
Authors: Boettke Peter J. , Candela Rosolino A. 
Published: March 2021

AbstractThis paper evaluates the contribution of Risk, Uncertainty, and Profit to the development of economic theory in the 20th century. Our argument in this paper is twofold. First, we contend that this book embodied what had been the common knowledge of early neoclassical economics prior to World War II (WWII). Second, we also argue that embryonic to Knight's account of economics were two divergent approaches to economic thought that emerged after WWII. The first approach, what has come to be known as microeconomics, is characterized by utility maximization under fixed price, income, and institutional parameters that approximate equilibrium. This first approach is distinct from a second approach, referred to as price theory, in which prices are not sufficient statistics, as in microeconomics, but operate as guides to consumption and production decisions under alternative institutional arrangements. This second approach not only represented the continuation of the mainline1 of economic thought from its classical and early neoclassical roots. It also embodies the basis for Knight's understanding of uncertainty, profit and entrepreneurship, as well as its implications for economic organization and social progress.
Small UAV-based SAR system using low-cost radar, position, and attitude sensors with onboard imaging capability
Authors: Svedin Jan , Bernland Anders , Gustafsson Andreas , Claar Eric , Luong John 
Published: March 2021

AbstractThis paper describes a small unmanned aerial vehicle (UAV)-based synthetic aperture radar (SAR) system using low-cost radar (5–6 GHz), position (GNSS/RTK) and attitude (IMU) sensors for the generation of high-resolution images. Measurements using straight as well as highly curved flight trajectories and varying flight speeds are presented, showing range and cross-range lobe-widths close to the theoretical limits. An analysis of the improvements obtained by the use of attitude angles (roll, pitch, and yaw), to correct for the relative offsets in antenna positions as the UAV moves, is included. A capability to generate SAR images onboard with the back-projection algorithm has been implemented using a GPU accelerated single-board computer. Generated images are transmitted to ground using a Wi-Fi data link.
Inner‐Core Wind Field in a Concentric Eyewall Replacement of Typhoon Trami (2018): A Quantitative Analysis Based on the Himawari‐8 Satellite
Authors: Tsujino S. , Horinouchi T. , Tsukada T. , Kuo H.‐C. , Yamada H. , Tsuboki K. 
Published: March 2021

AbstractDynamics of rapid changes of intensity and structure in an eyewall replacement cycle of tropical cyclones remain an open question. To clarify the dynamics of the inner eyewall decaying, a quantitative estimation of inner‐core wind fields based on highly frequent observation images with 2.5‐min temporal resolution in the Himawari‐8 satellite is applied to Typhoon Trami (2018) which had a clear concentric eyewall structure. A high tangential wind of 50 m s−1 is estimated at a radius of 30 km, which is located in the inner edge of the inner eyewall, during an active stage of the inner eyewall. During the decaying stage of the inner eyewall, the estimated tangential wind rapidly decreases to about 20 m s−1 at a radius of 24 km. The satellite‐based tangential winds are validated with dropsondes around the inner core by an aircraft. Vorticity field retrieved by the satellite‐based tangential winds during the decaying stage exhibits a rapid decrease in an outer part of the eye and the inner eyewall, and a slow decrease near the storm center. Examination on an absolute angular momentum coordinate indicates that the rapidly slow‐down rotation in the outer edge of the eye and inner eyewall is faster than a slow‐down rotation explained by surface friction. It suggests that asymmetric eddies transport angular momentum across the moat in the inner eyewall dissipation. This study is the first examination of dynamical contributions of asymmetric eddies to the inner‐eyewall dissipation based on satellite‐estimated tangential winds.
Nanodevices engineering and spin transport properties of MnBi2Te4 monolayer
Authors: An Yipeng , Wang Kun , Gong Shijing , Hou Yusheng , Ma Chunlan , Zhu Mingfu , Zhao Chuanxi , Wang Tianxing , Ma Shuhong , Wang Heyan , Wu Ruqian , Liu Wuming 
Published: March 2021

AbstractTwo-dimensional (2D) magnetic materials are essential for the development of the next-generation spintronic technologies. Recently, layered van der Waals (vdW) compound MnBi2Te4 (MBT) has attracted great interest, and its 2D structure has been reported to host coexisting magnetism and topology. Here, we design several conceptual nanodevices based on MBT monolayer (MBT-ML) and reveal their spin-dependent transport properties by means of the first-principles calculations. The pn-junction diodes and sub-3-nm pin-junction field-effect transistors (FETs) show a strong rectifying effect and a spin filtering effect, with an ideality factor n close to 1 even at a reasonably high temperature. In addition, the pip- and nin-junction FETs give an interesting negative differential resistive (NDR) effect. The gate voltages can tune currents through these FETs in a large range. Furthermore, the MBT-ML has a strong response to light. Our results uncover the multifunctional nature of MBT-ML, pave the road for its applications in diverse next-generation semiconductor spin electric devices.