Thysanoptera, commonly known as thrips, constitutes a relatively diminutive insect order within the superorder Thripida Fallen, 1814, with at least 6000 described extant species. Thripida has been ...divided into three clades: Panthysanoptera Nel et al., 2012, Lophioneurida Tillyard, 1921, and Westphalothripidesidae Nel et al., 2012, primarily based on wing venation patterns (Nel et al., 2012).
Inertial microfluidics has attracted significant attentions in last decade due to its superior advantages of high throughput, label‐ and external field‐free operation, simplicity, and low cost. A ...wide variety of channel geometry designs were demonstrated for focusing, concentrating, isolating, or separating of various bioparticles such as blood components, circulating tumor cells, bacteria, and microalgae. In this review, we first briefly introduce the physics of inertial migration and Dean flow for allowing the readers with diverse backgrounds to have a better understanding of the fundamental mechanisms of inertial microfluidics. Then, we present a comprehensive review of the recent advances and applications of inertial microfluidic devices according to different channel geometries ranging from straight channels, curved channels to contraction‐expansion‐array channels. Finally, the challenges and future perspective of inertial microfluidics are discussed. Owing to its superior benefit for particle manipulation, the inertial microfluidics will play a more important role in biology and medicine applications.
We report here a novel two-stage i-DLD sorter through coupling inertial microfluidics with deterministic lateral displacement (DLD), allowing for precise, continuous, and size-based cell separation. ...The first stage spiral inertial microfluidic sorter is responsible for removing the overwhelming majority of background blood cells at a high-throughput manner. The precise and flow-rate insensitive DLD sorter with triangular posts serves as the second stage sorter which further removes the residual blood cells for obtaining high-purity tumor cells. After demonstrating the conceptual design, we characterize the performances of our two-stage i-DLD sorter for the separation of differently sized particles and cells. The characterization results show that a 100% complete separation of 15 and 7 μm particles was achieved, whereas a separation efficiency of over 99.9% and a target sample purity of 93.59% was realized for the separation of differently sized cells. Finally, we successfully apply our sorter for the separation of rare tumor cells from the diluted whole blood or WBCs at good performances. Our two-stage i-DLD sorter offers numerous advantages of label- and external field-free operation, high-efficiency and high-reliability separation, and high-throughput processing without clogging, and is promising as a potential tool for precise cell separation in low-resource settings.
We report the first discovery of barklice preserved in copula from amber dating back to the mid-Cretaceous, thus documenting the oldest preserved reproductive behaviour of Psocodea. The new finding ...provides new insight into the evolution of copulatory behaviour in Trogiomorpha. Moreover, we describe and illustrate the new fossil material of Burmempheria densuschaetae (= Latempheria kachinensis) in the extinct family Empheriidae and Longiantennum fashengi in the extinct family Archaeatropidae, two diverse and widely distributed groups during the Cretaceous. No significant sexual dimorphism is recorded, apart from variation in size where males are larger. The taxonomy of Cretaceous empheriids from Burmese amber is revised and discussed.
A mating pair of Palaeoparasycorax globosus Stebner et al., 2015 from the mid-Cretaceous Burmese amber is illustrated and described. The male is redescribed, and the female genitalia of this species ...is described for the first time. This discovery allows for a better understanding of this fossil sycoracines characteristics and further demonstrates the bioinclusion richness of the mid-Cretaceous Burmese amber. A list of all Cretaceous Psychodidae is given.
Organic–inorganic hybrid metal halides have recently attracted attention in the global research field for their bright light emission, tunable photoluminescence wavelength, and convenient synthesis ...method. This study reports the detailed properties of (C10H16N)2MnBr4, which emits bright green light with a high photoluminescence quantum yield. Results of powder X-ray diffraction, photoluminescence, thermogravimetric analysis, and Raman spectra show the phase transition of (C10H16N)2MnBr4 at 430 K. This phase transition was identified as the solid to liquid state of (C10H16N)2MnBr4. Moreover, the pressure- and temperature-induced relationship between structural and optical properties in (C10H16N)2MnBr4 can be identified. This investigation provides deep insights into the luminescent properties of metal halide crystals and promotes further research.
Facial expression is an important channel for human nonverbal communication. This paper presents a novel and effective approach to automatic 3D/4D facial expression recognition based on the muscular ...movement model (MMM). In contrast to most of existing methods, the MMM deals with such an issue in the viewpoint of anatomy. It first automatically segments the input 3D face (frame) by localizing the corresponding points within each muscular region of the reference using iterative closest normal point. A set of features with multiple differential quantities, including coordinate, normal, values, are then extracted to describe the geometry deformation of each segmented region. Meanwhile, we analyze the importance of these muscular areas, and a score level fusion strategy is exploited to optimize their weights by the genetic algorithm in the learning step. The support vector machine and the hidden Markov model are finally used to predict the expression label in 3D and 4D, respectively. The experiments are conducted on the BU-3DFE and BU-4DFE databases, and the results achieved clearly demonstrate the effectiveness of the proposed method.
Through oxygen profile engineering, we fabricated W/AlOx/Al2O3/Pt bilayer memristors with a 250-nm feature size. The AlOx fabricated by sputtering serves as an oxygen vacancy source, whereas the ...Al2O3 deposited by atomic layer deposition acts as a dominant resistive switching (RS) layer. Our devices show forming-free RS behaviors with high speed (28 ns), uniform resistance distribution, large on/off ratio (~103@100K, ~103@298K, and ~80@400K), and good retention. Besides, temperature stability with record high endurance from cryogenic to high-temperature (108@100K, 1010@298K, and 107@400K) is demonstrated, to the best of our knowledge.
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