415 research outputs found
Traditional Cosmology and Hamlet’s Delay--—Four Humours and Their Activation of His Personal Character
There have been countless ways and perspectives to look into the causes and reasons why Hamlet has delayed in taking his revenge against his father’s death. However, one thing should be noticed is that the Four Humour theory might serve well to explain the situation. Traditional cosmology holds that macrocosm contrasts and corresponds to microcosm by way of the two parallel analogies: for the former, the Four Roots to construct and build the cosmos or the world are water, fire, air and earth, and correspondingly for the latter, the human being is affected and even controlled and directed by the Four Humours, Phlegm, the Yellow Bile, Blood and the Black Bile, and thus form their various states of character. Though everybody has a tendency of determination of personal character by these four fluids, Hamlet together with his special elements has fostered his character by the service of objective backgrounds and subjective vicissitudes of all four fluids like that which has balanced the system of all seasons of the macrocosm
Preparation of Antheraea pernyi
The goal of this study was to fabricate Antheraea pernyi silk fibroin (ASF) microparticles using electrospinning under mild processing conditions. To improve processability of the ASF solution, poly(ethylene oxide) (PEO) was used to regulate viscosity of ASF solution for electrospinning. It was found that the blend of ASF with PEO could form a bead-on-string structure with well spherical particles. Furthermore, aqueous ethanol and ultrasonic treatments could disrupt the nanofibrillar string structure between particles and ultimately produced water-insoluble ASF particles with submicron scale. Cell viability studies indicated that the ASF microparticles were nontoxic to EA926 cells. Moreover, fluorescent images based on FITC labeling showed that the ASF microparticles were easily uptaken by the cells. Aqueous-based electrospinning provides a potentially useful option for the fabrication of ASF microparticles based on this unique fibrous protein
A temporal Convolutional Network for EMG compressed sensing reconstruction
Electromyography (EMG) plays a vital role in detecting medical abnormalities and analyzing the biomechanics of human or animal movements. However, long-term EMG signal monitoring will increase the bandwidth requirements and transmission system burden. Compressed sensing (CS) is attractive for resource-limited EMG signal monitoring. However, traditional CS reconstruction algorithms require prior knowledge of the signal, and the reconstruction process is inefficient. To solve this problem, this paper proposed a reconstruction algorithm based on deep learning, which combines the Temporal Convolutional Network (TCN) and the fully connected layer to learn the mapping relationship between the compressed measurement value and the original signal, and it has been verified in the Ninapro database. The results show that, for the same subject, compared with the traditional reconstruction algorithms orthogonal matching pursuit (OMP), basis pursuit (BP), and Modified Compressive Sampling Matching Pursuit (MCo), the reconstruction quality and efficiency of the proposed method is significantly improved under various compression ratios (CR)
Collaborative Camouflaged Object Detection: A Large-Scale Dataset and Benchmark
In this paper, we provide a comprehensive study on a new task called
collaborative camouflaged object detection (CoCOD), which aims to
simultaneously detect camouflaged objects with the same properties from a group
of relevant images. To this end, we meticulously construct the first
large-scale dataset, termed CoCOD8K, which consists of 8,528 high-quality and
elaborately selected images with object mask annotations, covering 5
superclasses and 70 subclasses. The dataset spans a wide range of natural and
artificial camouflage scenes with diverse object appearances and backgrounds,
making it a very challenging dataset for CoCOD. Besides, we propose the first
baseline model for CoCOD, named bilateral-branch network (BBNet), which
explores and aggregates co-camouflaged cues within a single image and between
images within a group, respectively, for accurate camouflaged object detection
in given images. This is implemented by an inter-image collaborative feature
exploration (CFE) module, an intra-image object feature search (OFS) module,
and a local-global refinement (LGR) module. We benchmark 18 state-of-the-art
models, including 12 COD algorithms and 6 CoSOD algorithms, on the proposed
CoCOD8K dataset under 5 widely used evaluation metrics. Extensive experiments
demonstrate the effectiveness of the proposed method and the significantly
superior performance compared to other competitors. We hope that our proposed
dataset and model will boost growth in the COD community. The dataset, model,
and results will be available at: https://github.com/zc199823/BBNet--CoCOD.Comment: Accepted by IEEE Transactions on Neural Networks and Learning Systems
(TNNLS
Transmission infrared micro-spectroscopic study of individual human hair
Understanding the optical transmission property of human hair, especially in
the infrared regime, is vital in physical, clinical, and biomedical research.
However, the majority of infrared spectroscopy on human hair is performed in
the reflection mode, which only probes the absorptance of the surface layer.
The direct transmission spectrum of individual hair without horizontal cut
offers a rapid and non-destructive test of the hair cortex but is less
investigated experimentally due to the small size and strong absorption of the
hair. In this work, we conduct transmission infrared micro-spectroscopic study
on individual human hair. By utilizing direct measurements of the transmission
spectrum using a Fourier-transform infrared microscope, the human hair is found
to display prominent band filtering behavior. The high spatial resolution of
infrared micro-spectroscopy further allows the comparison among different
regions of hair. In a case study of adult-onset Still's disease, the
corresponding infrared transmission exhibits systematic variations of spectral
weight as the disease evolves. The geometry effect of the internal hair
structure is further quantified using the finite-element simulation. The
results imply that the variation of spectral weight may relate to the
disordered microscopic structure variation of the hair cortex during the
inflammatory attack. Our work reveals the potential of hair infrared
transmission spectrum in tracing the variation of hair cortex retrospectively
Isolation and characterization of 28 polymorphic microsatellite loci in black carp (Mylopharyngodon piceus)
This study reports the isolation and characterization of 28 polymorphic microsatellite loci developed from black carp (Mylopharyngodon piceus), which is an important freshwater fish in China. The polymorphism was assessed with 32 individuals. Results showed that the numbers of loci alleles ranged from 2 to 19, and the values of observed and expected heterozygosities were from 0.2609 to 1.0000 and from 0.2417 to 0.9385, respectively. These markers are potentially useful for black carp population genetics analysis.This study reports the isolation and characterization of 28 polymorphic microsatellite loci developed from black carp (Mylopharyngodon piceus), which is an important freshwater fish in China. The polymorphism was assessed with 32 individuals. Results showed that the numbers of loci alleles ranged from 2 to 19, and the values of observed and expected heterozygosities were from 0.2609 to 1.0000 and from 0.2417 to 0.9385, respectively. These markers are potentially useful for black carp population genetics analysis
Monolayer Excitonic Laser
Recently, two-dimensional (2D) materials have opened a new paradigm for
fundamental physics explorations and device applications. Unlike gapless
graphene, monolayer transition metal dichalcogenide (TMDC) has new optical
functionalities for next generation ultra-compact electronic and
opto-electronic devices. When TMDC crystals are thinned down to monolayers,
they undergo an indirect to direct bandgap transition, making it an outstanding
2D semiconductor. Unique electron valley degree of freedom, strong light matter
interactions and excitonic effects were observed. Enhancement of spontaneous
emission has been reported on TMDC monolayers integrated with photonic crystal
and distributed Bragg reflector microcavities. However, the coherent light
emission from 2D monolayer TMDC has not been demonstrated, mainly due to that
an atomic membrane has limited material gain volume and is lack of optical mode
confinement. Here, we report the first realization of 2D excitonic laser by
embedding monolayer tungsten disulfide (WS2) in a microdisk resonator. Using a
whispering gallery mode (WGM) resonator with a high quality factor and optical
confinement, we observed bright excitonic lasing in visible wavelength. The
Si3N4/WS2/HSQ sandwich configuration provides a strong feedback and mode
overlap with monolayer gain. This demonstration of 2D excitonic laser marks a
major step towards 2D on-chip optoelectronics for high performance optical
communication and computing applications.Comment: 15 pages, 4 figure
A series of lanthanide(iii) metal-organic frameworks derived from a pyridyl-dicarboxylate ligand: single-molecule magnet behaviour and luminescence properties
The reactions of LnIII ions with a versatile pyridyl-decorated dicarboxylic acid ligand lead to a series of novel three-dimensional (3D) Ln-MOFs, [Ln3(pta)4(Hpta)(H2O)]·xH2O (Ln = Dy (1), Eu (2), Gd (3), Tb (4), H2pta = 2-(4-pyridyl)-terephthalic acid, x = 6 for 1, 2.5 for 2, 1.5 for 3 and 2 for 4). The Ln3+ ions act as the nine-coordinated Muffin spheres, linking to each other to generate trinuclear {Ln3(OOC)6N2} SBUs, which are further extended to be interesting 3D topology architectures. To the best of our knowledge, the Dy-MOF exhibits a zero-field single-molecule magnet (SMM) behaviour with the largest effective energy barrier among the previously reported 3D MOF-based Dy-SMMs. The combined analyses of a dilution sample (1@Y) and ab initio calculation demonstrate that the thermally assisted slow relaxation is mainly attributed to the single-ion magnetism. Furthermore, fluorescence measurements reveal that H2pta can sensitize EuIII and TbIII characteristic luminescence
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