bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quantum state transmission through a spin chain in finite-temperature heat baths
Authors: Wang Zhao-Ming , Ren Feng-Hua , Luo Da-Wei , Yan Zhan-Yuan , Wu Lian-Ao 
Published: February 2021

Abstract
Transmission of a quantum state is essential for performing quantum information processing tasks. The communication channel will be inevitably immersed in its surrounding environment under realistic conditions. In this paper, we investigate the influence of environment noise on the transmission fidelity when transferring a quantum state through a spin chain. The non-Markovian open system dynamics is systematically analyzed by using the quantum state diffusion equation method. With each spin immersed in its own finite temperature and non-Markovian heat bath, we consider three types of system–bath interaction: dephasing, dissipation and spin-boson. The transmission fidelity is found to decrease with the increasing bath temperature and system–bath coupling strength. Interestingly, we find that the bath non-Markovianity can help enhancing the transmission fidelity.
The role of the non-linearity in controlling the surface roughness in the one-dimensional Kardar–Parisi–Zhang growth process
Authors: Priyanka  , Täuber Uwe C , Pleimling Michel 
Published: February 2021

Abstract
We explore linear control of the one-dimensional non-linear Kardar–Parisi–Zhang (KPZ) equation with the goal to understand the effects the control process has on the dynamics and on the stationary state of the resulting stochastic growth kinetics. In linear control, the intrinsic non-linearity of the system is maintained at all times. In our protocol, the control is applied to only a small number n
c of Fourier modes. The stationary-state roughness is obtained analytically in the small-n
c regime with weak non-linear coupling wherein the controlled growth process is found to result in Edwards–Wilkinson dynamics. Furthermore, when the non-linear KPZ coupling is strong, we discern a regime where the controlled dynamics shows scaling in accordance to the KPZ universality class. We perform a detailed numerical analysis to investigate the controlled dynamics subject to weak as well as strong non-linearity. A first-order perturbation theory calculation supports the simulation results in the weak non-linear regime. For strong non-linearity, we find a temporal crossover between KPZ and dispersive growth regimes, with the crossover time scaling with the number n
c of controlled Fourier modes. We observe that the height distribution is positively skewed, indicating that as a consequence of the linear control, the surface morphology displays fewer and smaller hills than in the uncontrolled growth process, and that the inherent size-dependent stationary-state roughness provides an upper limit for the roughness of the controlled system.
Low-density limit of dynamical correlations in the Lieb–Liniger model
Authors: Granet Etienne 
Published: February 2021

Abstract
We derive explicit expressions for dynamical correlations of the field and density operators in the Lieb–Liniger model, within an arbitrary eigenstate with a small particle density

D

. They are valid for all space and time and any interaction strength
c
> 0, and are the leading order of an expansion in

D

. This expansion is obtained by writing the correlation functions as sums over form factors when formally decomposed into partial fractions.
Some results of ecological breeding of yellow lupine
Authors: Dragunskaya M G , Savicheva I K , Yu Leshchenko P , Adamkov V N 
Published: February 2021

Abstract
The studied and generalized data indicate the ambiguity of the reaction of varieties of yellow Lupinus (Lupinus Luteus L), created in various research institutes in the country and abroad, to the ecological and geographical conditions of the regional zone. The strain VNII of lupine Reliable formed grain yield of 1.16 t/ha, at the level of varieties of breeding Novozybkov agricultural experimental station (NAS) Friendly 165 – 1.17 and Novozybkosky 100 – 1,22 t/ha,and varieties Brigantine and Bulat on grain yield was, respectively, 0.09 to 0.24 t/ha and 0.14-0.29 t/ha. Kastrychnik and Vladko (Belarusian selection) decreased productivity relative to Druzhny 165 by 0.25-0.45 t / ha and Novozybkosky 100 by 0.30-0.50 t / ha. Varieties of foreign selection Mister and Lord undergo a period of adaptation to the soil and climatic conditions of the regional zone, so the grain yield is lower than Amicable 165 by 0.29-0.49 t / ha and Novozybkosky 100 by 0.34-0.54 t / ha. In the hybrid material of the 2008-2014 NSOS of the crossing years, samples 1-08-7-75, 5-10-84, 2-13-33 and 7-13-65 were distinguished by grain yield of 1.32-1.34 t/ha, while the remaining numbers were at the level of the best varieties by productivity. Anthracnose infestation in 2018 and 2019 of green mass and beans was low due to arid vegetation conditions. In 2020, climatic conditions contributed to the development of Anthracnose in the phase of the blue-brilliant bean, dividing the studied varieties into highly resistant ones: Friendly 165, Novozybkosky 100, Reliable, Mister and Lord and stable: Brigantine, Bulat, Kastrychnik and Vladko. Hybrid samples were affected by 15.7-19.7%, with the exception of the number 5-10-84-34.1% and are highly resistant and stable. Under conditions of radioactive contamination of the soil, the concentration of caesium-137 in the grain of Druzhny 165, Novozybkosky 100 and Reliable varieties was at the level of 300-393 Bq/kg, which is 1.5-2.0 times higher than the standard for feed grain of 200 Bq/kg. Castrychnik exceeded the norm by 1.7-2.4 times, and Mister and Lord accumulated a radioisotope within the norm in 2018 and above it by 1.8-2.3 times in 2019. Samples of hybrid material (data for 2018) contained
137Cs in grain at the standard level: with fluctuations from 112 to 265 Bq/kg. Thus, to solve the problem of providing livestock with high-protein feed, preserving the soil fertility of sandy soils, it is very important to develop ecological breeding that makes maximum use of the agro and bioclimatic resources of the zone.
Printability in extrusion bioprinting
Authors: Fu Zhouquan , Naghieh Saman , Xu Cancan , Wang Chengjin , Sun Wei , Chen Xiongbiao 
Published: February 2021

Abstract
Extrusion bioprinting has been widely used to extrude continuous filaments of bioink (or the mixture of biomaterial and living cells), layer-by-layer, to build three-dimensional constructs for biomedical applications. In extrusion bioprinting, printability is an important parameter used to measure the difference between the designed construct and the one actually printed. This difference could be caused by the extrudability of printed bioink and/or the structural formability and stability of printed constructs. Although studies have reported in characterizing printability based on the bioink properties and printing process, the concept of printability is often confusingly and, sometimes, conflictingly used in the literature. The objective of this perspective is to define the printability for extrusion bioprinting in terms of extrudability, filament fidelity, and structural integrity, as well as to review the effect of bioink properties, bioprinting process, and construct design on the printability. Challenges related to the printability of extrusion bioprinting are also discussed, along with recommendations for improvements.
Superposition of intra- and inter-layer excitons in twistronic MoSe2/WSe2 bilayers probed by resonant Raman scattering
Authors: McDonnell Liam P , Viner Jacob J S , Ruiz-Tijerina David A , Rivera Pasqual , Xu Xiaodong , Fal’ko Vladimir I , Smith David C 
Published: February 2021

Abstract
Hybridisation of electronic bands of two-dimensional materials, assembled into twistronic heterostructures, enables one to tune their optoelectronic properties by selecting conditions for resonant interlayer hybridisation. Resonant interlayer hybridisation qualitatively modifies the excitons in such heterostructures, transforming these optically active modes into superposition states of interlayer and intralayer excitons. For MoSe2/WSe2 heterostructures, strong hybridization of both single particle and excitonic states can occur via single particle tunnelling. Here we use resonance Raman scattering to provide direct evidence for the hybridisation of excitons in twistronic MoSe2/WSe2 structures, by observing scattering of specific excitons by phonons in both WSe2 and MoSe2. We also demonstrate that resonance Raman scattering spectroscopy opens up a wide range of possibilities for quantifying the layer composition of the superposition states of the exciton and the interlayer hybridisation parameters in heterostructures of two-dimensional materials.
Direct synthesis of hierarchical porous polymer nanoparticles from nitrile monomers and its application for methylene blue adsorption
Authors: Shi En , Wang Xinyu , Zhang Miao , Fang Yanfeng , Gao Jianchun , Wang Xin , Zheng Yunbin 
Published: February 2021

Abstract
Microporous covalent triazine-based frameworks (CTFs) have been widely used as adsorbents, separation and catalysts in the past few years, but the confined microporous network often induces diffusion limitations of molecules to and from the active sites. Here, we present a general bottom-up synthetic strategy to produce hierarchical porous polymer nanoparticles by cyclotrimerization of 1,4-dicyanobenzene in molten ZnCl2. Controlling the ratio of monomer to molten salts is the key to prepare hierarchical porous polymer nanoparticles by ionothermal methods, and uniform nanoparticles with particle size of 100–400 nm can be facilely synthesized at a low monomer/ZnCl2 molar ratios. The resulting hierarchical porous polymer nanoparticles exhibit great adsorption capacity of methylene blue. The enhancement is ascribed to enhanced mass transfer of the molecules and easy access to the active sites as a result of the short diffusion lengths of hierarchical porous polymer nanoparticles. This method is simple and efficient for the preparation of size-controllable hierarchical porous polymer nanoparticles from nitrile monomers, which is conducive to expand its application in adsorption, catalysis and other related fields.
Insights into the reinforcement and mechanism of silicone mold rubber co-modified with WCB and MMQ resin
Authors: Hao Wenli , Zeng Hehua , Chen Xiqing , He Wei , Zhou Rui , Li Jianhui , Zhang Hongxi 
Published: February 2021

Abstract
The exploitation of condensation room-temperature vulcanized silicone rubber (C-RTV) with excellent mechanical properties and thermal stability is of great practical significance in the preparation of insulation materials and rubber products with high performance. In this work, novel silicone rubber was fabricated successfully by adding white carbon black (WCB) and different percentages of methyl MQ (MMQ) silicone resin to C-RTV silicone mold rubbers (C-RTV/WMMQ). The mechanical properties, dimensional thermal stabilities, and thermal decomposing temperatures of the as-prepared samples were investigated in detail. Compared to the primitive C-RTV, the tensile strength of the sample with the WCB adding an amount of 15% increased from 0.44 MPa to 3.9 MPa. When the 1% MMQ was introduced, the tensile strength further increased to 4.4 MPa, suggesting a 12.8% reinforcement rate in addition to the improvements in the dimensional thermal stabilities and decomposing temperature. Based on the experimental results, a feasible synergistic effect and compatibility mechanism was proposed that hydrogen bond formed on the interface between MMQ resin and C-RTV in addition to the rigid structure of WCB, and thus led to a dense crosslinking network structure in the polymer matrix.
The spatial and energy distribution of oxide trap responsible for 1/f noise in 4H-SiC MOSFETs
Authors: Chen Hua , He Liang 
Published: February 2021

Abstract
Low-frequency noise is one of the important characteristics of 4H-SiC metal-oxide-semiconductor field-effect transistors (MOSFETs) that is susceptible to oxide traps. Drain-source voltage noise models of 4H-SiC MOSFETs under low–drain-voltage and inverse condition were proposed by considering the spatial and energy non-uniform distribution of the oxide trap, based on the McWhoter model for uniform trap distribution. This study performed noise experiments on commercial 4H-SiC MOSFETs, and revealed that the non-uniform spatial and non-uniform energy distribution caused new 1/f noise phenomenon, different from that under uniform spatial and energy distribution. By combining experimental data and theoretical models, the spatial and energy distribution of oxide traps of these samples were determined.
Polarization-resolved supercontinuum generated in a germania-doped photonic crystal fiber
Authors: Couture Nicolas , Ostic Rachel , Reddy P Harshavardhan , Kar Ajoy Kumar , Paul Mukul Chandra , Ménard Jean-Michel 
Published: February 2021

Abstract
We characterize the polarization properties of a supercontinuum (SC) generated in a GeO2-doped photonic crystal fiber (PCF) to reveal the interplay between nonlinear broadening mechanisms of a pulse propagating in two independent fundamental modes associated to the principal axes of the fiber. Notably, we resolve self-phase modulation, self-shifted Raman solitons and dispersive waves within a set of orthogonal polarization states as they contribute to generate a broad spectrum spanning from 450 to 2150 nm. Interestingly, our experimental results feature a high degree of polarization at the edges of the spectrum in comparison to the region near the pump wavelength. We show that this modulation is caused by nonlinear spectral broadening. We also identify an additional depolarization mechanism preferentially acting on shorter wavelengths, indicative of a Rayleigh-like scattering effect due to the presence of intrinsic sub-wavelength defects in the fiber. Experiments rely on a free-space grating-based monochromator and a broadband polarizer to monitor the output SC and its linear polarization components along the principal axes of the PCF. Our results and experimental technique pave the way toward an improved standard for the characterization of broadband optical spectra and more efficient implementation of highly nonlinear fibers in a large range of polarization-sensitive applications.
Studies and optimization of hybrid X-pinches
Authors: Elshafiey A T , Musk J H , Pikuz S A , Shelkovenko T A , Hammer D A 
Published: February 2021

Abstract
Studies were carried out on the hybrid X-pinch (HXP) configuration for several wire materials using a 40 ns risetime, 300-kA pulsed-power generator with the goal of optimizing the HXP x-ray burst parameters for different applications. The gap distance between the conical electrodes of the hybrid X-pinch was varied from 0.5 to 5 mm for Al, Ag, Ti, and Mo using different wire diameters to maintain a consistent mass per unit length from one material to the next. It was found that 0.5–1 mm gap spacing was optimal to obtain a single x-ray burst, while the number of x-ray bursts increased with gap spacing for all materials at a rate of 1–2/mm. Time consistency studies of the first x-ray burst were carried out for Ti wire by changing the gap distance and wire diameter while observing the time of occurrence of the x-ray bursts. It was found that a 40 μm Ti wire load with a 3 mm electrode gap spacing had the highest probability to have the first x-ray burst reproducibly within a 2 ns time window. Time-resolved and time-integrated diagnostics provided information about the source size, time of occurrence, intensity, and the number of the x-ray bursts.
A perfect 2D auxetic sliding mechanism based on an Islamic geometric pattern
Authors: Lim Teik-Cheng 
Published: February 2021

Abstract
A new auxetic microstructure is introduced herein by inspiration from an Islamic geometric pattern that consists of square array of 8-pointed rigid stars interspersed with square array of 4-pointed rigid stars. By permitting each star to slide across its adjoining neighbors through incorporation of slots and sliders in the stars, an in-plane isotropic Poisson’s ratio of −1, and hence equi-biaxial strain, is achieved upon applied uniaxial compression. Apart from the negativity of Poisson’s ratio, another counter-intuitive property is the occurrence of global rotation of the entire structure relative to the stars during compression. Results indicate that when fully compressed, the in-plane strain is −0.232 with the accompanying global rotation of 6.18 degrees. Without the 4-pointed stars, the system can achieve an in-plane strain of −0.288 with a corresponding global rotation of 7.86 degrees.
Model improvement and SOC estimation based on aluminium ion batteries
Authors: Jia Wang , Sun Xiujuan , Lin Mengchang , Wang Chuanjiang , Du Huiping , Chen Pijian , Liu Zhidong 
Published: February 2021

Abstract
The main work of this paper can be divided into three parts: (1) An aluminium ion battery is made, the battery capacity is calibrated under a constant current, and the battery’s voltage and current data under pulse conditions is collected. (2) The influence of the hysteresis effect on the SOC estimation of aluminium ion batteries is fully considered. A model suitable for aluminium ion batteries is established based on the model that the parameter identification and verification was carried out with. (3) The error with the EKF and AEKF algorithms in estimating the SOC of aluminium ion batteries is compared. The experimental results show that the model established in this paper can describe the working state of aluminium ion batteries very well. Compared with the EKF algorithm, the AEKF algorithm is more accurate in estimating the SOC of aluminium ion batteries.
Effects of (Ti,W)C on the properties of Stellite12 overlays
Authors: Zhang Guodong , Qiao Xiyue , Zhou Yicheng 
Published: February 2021

Abstract
The Stellite12 overlay and (Ti,W)C-reinforced overlay have been successfully manufactured on the Q235 steel by plasma arc powder surfacing and effects of (Ti,W)C on the properties of Stellite12 overlay have been studied. Microstructure has been investigated using optical microscope(OM), scanning electron microscope(SEM) with energy dispersive spectroscopy(EDS). Results show that the addition of (Ti,W)C changes the Stellite12 overlay characterized by the Co-rich solid solution and eutectic structure to the (Ti,W)C-reinforced overlay characterized by the dispersed (Ti,W)C particles, fishbone dendrites and blocky dendrites. Microhardness and macrohardness have been evaluated using Vickers hardness tester and Rockwell hardness tester. Results show that macrohardness has been improved when (Ti,W)C is added into the Stellite12 overlay. In addition, the results of electrochemical testing show that the corrosion resistance of the (Ti,W)C-reinforced overlay is better than the Stellite12 overlay.
Towards automated analysis for neutron reflectivity
Authors: Mironov Daniil , Durant James H , Mackenzie Rebecca , Cooper Joshaniel F K 
Published: February 2021

Abstract
We describe a neural network-based tool for the automatic estimation of thin film thicknesses and scattering length densities from neutron reflectivity curves. The neural network sits within a data pipeline, that takes raw data from a neutron reflectometer, and outputs data and parameter estimates into a fitting program for end user analysis. Our tool deals with simple cases, predicting the number of layers and layer parameters up to three layers on a bulk substrate. This provides good accuracy in parameter estimation, while covering a large portion of the use case. By automating steps in data analysis that only require semi-expert knowledge, we lower the barrier to on-experiment data analysis, allowing better utility to be made from large scale facility experiments. Transfer learning showed that our tool works for x-ray reflectivity, and all code is freely available on GitHub (neutron-net 2020, available at: https://github.com/xmironov/neutron-net) (Accessed: 25 June 2020).
Cranial integration in the ring-necked parakeet, Psittacula krameri (Psittaciformes: Psittaculidae)
Authors: Mitchell Matthew J , Goswami Anjali , Felice Ryan N 
Published: February 2021

Abstract
The study of integration and modularity aims to describe the organization of components that make up organisms, and the evolutionary, developmental and functional relationships among them. Both have been studied at the interspecific (evolutionary) and intraspecific (phenotypic and ontogenetic) levels to different degrees across various clades. Although evolutionary modularity and integration are well-characterized across birds, knowledge of intraspecific patterns is lacking. Here, we use a high-density, three-dimensional geometric morphometric approach to investigate patterns of integration and modularity in Psittacula krameri, a highly successful invasive parrot species that exhibits the derived vertical palate and cranio-facial hinge of the Psittaciformes. Showing a pattern of nine distinct cranial modules, our results support findings from recent research that uses similar methods to investigate interspecific integration in birds. Allometry is not a significant influence on cranial shape variation within this species; however, within-module integration is significantly negatively correlated with disparity, with high variation concentrated in the weakly integrated rostrum, palate and vault modules. As previous studies have demonstrated differences in beak shape between invasive and native populations, variation in the weakly integrated palate and rostrum may have facilitated evolutionary change in these parts of the skull, contributing to the ring-necked parakeet’s success as an invasive species.
Hybrid effects in field populations of the African monarch butterfly, Danaus chrysippus (L.) (Lepidoptera: Nymphalidae)
Authors: Smith David As , Bennie Jon J , Gordon Ian J , Martin Simon , Ireri Piera , Omufwoko Kennedy S , Ffrench-Constant Richard H 
Published: February 2021

Abstract
Heterosis, Haldane and Bateson-Dobzhansky-Muller effects have been widely documented amongst a range of plants and animals. However, typically these effects are shown by taking parents of known genotype into the laboratory and measuring components of the F1 progeny under laboratory conditions. This leaves in doubt the real significance of such effects in the field. Here we use the well-known colour pattern genotypes of the African monarch or queen (Danaus chrysippus), which also control wing length, to test these effects both in the laboratory and in a contact zone in the field. By measuring the wing lengths in animals of known colour pattern genotype we show clear evidence for all three hybrid effects at the A and BC colour patterning loci, and importantly, that these same effects persist in the same presumptive F1s when measured in hybrid populations in the field. This demonstrates the power of a system in which genotypes can be directly inferred in the field and highlights that all three hybrid effects can be seen in the East African contact zone of this fascinating butterfly.