The high energy and high frequency electro-optic Q-switching laser with alternating output of energy amplitude was the first reported by the temporal delay of pulse energy in 1064 nm laser. The ...experimental schematic of the output 1064 nm laser with different trigger time were obtained when turn on the Q-switch on the 60 μs. When turn on the Q-switch on the 71 μs, the pulse energy of 1064 nm is distributed in a “high-low” pulse sequence: the pulse energy of the 1st was higher than 2nd, and the 2nd pulse energy was lower than the 3rd is formed repeatedly, when turn on the Q-switch on the 48 μs, the output process of the pulse laser is reversed. To the best of our knowledge, it is the first time to report the high energy and high frequency electro-optic Q-switching laser with alternating output of energy amplitude. In experiment a repetition rate of 100 kHz with a pulse width of 13 ns was achieved when the pump power was 24 J and the charging voltage is 650 V, the total output power of 0.8 J was obtained and the conversion efficiency is 0.3%. And the result of the photon density distributions and the inverse population by numerical calculations are basically agree with the experiment result.
Integrative nursing is a nursing model that combines the advantages of western and Traditional Chinese Medicine (TCM) nursing. This paper compares the differences between the TCM and Western medicine ...in the nursing of patients with chronic bronchitis, and exhibits the advantages of integrative nursing in controlling the progress of chronic bronchitis and focuses on the clinical application progress of integrative nursing in chronic bronchitis. Meanwhile, this paper also discusses the limitations, necessity and feasibility of the development and clinical practice of integrative nursing in China. (中西医结合护理是一种能够兼具西医护理对症准、见效快和中医护理根治病因、长期养护为特点护理模式。本文比较了中医、西医护理在慢性支气管炎患者护理上的差异, 阐述了中西医结合护理在控制慢性支气管炎患者病情进展上的优势, 详细并重点的说明了中西医结合护理在慢性支气管炎疾病上的临床应用进展, 以其为进一步完善中西医结合护理在临床上应用规范提供参考。)
The proton-conducting reversible solid oxide cell (PC-RSOC) is one of the cleanest and most efficient energy conversion devices. At present, to reduce the polarization loss of PC-RSOCs at ...intermediate temperatures is key. In this work, a micro-nanostructured La1.2Sr0.8NiO4-δ (LSN)-BaCe0.68Zr0.1Y0.1Yb0.1Cu0.02O3-δ (BCZYYC2) composite electrode is prepared by infiltration method. The impedance spectrum results of symmetrical cells indicate that the 42.2 wt% LSN-infiltrated BCZYYC2 electrode exhibits the lowest polarization resistance of 0.039 Ω cm2 at 700 °C. Moreover, a hydrogen electrode-supported single cell with the 42.2 wt% LSN-infiltrated BCZYYC2 electrode shows a high maximum power density of 1.22 W cm−2 and an electrolysis current density (at 1.3 V) of −3.02 A cm−2 at 700 °C, respectively. These encouraging results suggest the applicability of the LSN-infiltrated BCZYYC2 as an oxygen electrode for high-performance PC-RSOCs.
•LSN nanoparticles are infiltrated into the BCZYYC2 electrolyte skeleton.•The symmetrical cell with 42.2 wt% LSN-infiltrated electrode exhibits low polarization resistance of 0.039 Ω cm2 at 700 °C.•The single cell with infiltrated oxygen electrode shows good thermal stability.
The comprehension of spoken language is one of the most essential language functions in humans. However, the neurological underpinnings of auditory comprehension remain under debate. Here we used ...multi‐modal neuroimaging analyses on a group of patients with low‐grade gliomas to localize cortical regions and white matter tracts responsible for auditory language comprehension. Region‐of‐interests and voxel‐level whole‐brain analyses showed that cortical areas in the posterior temporal lobe are crucial for language comprehension. The fiber integrity assessed with diffusion tensor imaging of the arcuate fasciculus and the inferior longitudinal fasciculus was strongly correlated with both auditory comprehension and the grey matter volume of the inferior temporal and middle temporal gyri. Together, our findings provide direct evidence for an integrated network of auditory comprehension whereby the superior temporal gyrus and sulcus, the posterior parts of the middle and inferior temporal gyri serve as auditory comprehension cortex, and the arcuate fasciculus and the inferior longitudinal fasciculus subserve as crucial structural connectivity. These findings provide critical evidence on the neural underpinnings of language comprehension.
Our findings provide direct evidence for an integrated network of auditory comprehension whereby not only the superior temporal gyrus and sulcus but the posterior parts of the middle and inferior temporal gyri also serve as auditory comprehension cortex, and the arcuate fasciculus and the inferior longitudinal fasciculus subserve as crucial structural connectivity. These findings provide new evidence on the neural underpinnings of language comprehension
Este trabajo de investigación compara dos versiones completas de la traducción del chino al español de Las Analectas, una perteneciente a Chang Shiru, un académico chino, y la otra, a Joaquín Pérez ...Arroyo, un traductor español. A partir de un corpus de construcción propia se han elegido varios parámetros a nivel léxico, oracional y discursivo para desarrollar un estudio comparativo. Además, como estudio de caso, se han seleccionado el pronombre “yo”, la palabra clave “superior” y la partícula “que”. Según los resultados, en términos generales, Chang utiliza un inventario de vocabulario más rico y oraciones más simples en comparación con Pérez Arroyo, quien, a su vez, emplea un inventario menos variado y oraciones más complejas, y tiende a ser más explícito en su traducción. Sin embargo, la preferencia de los traductores hacia las técnicas de explicitación y simplificación varía según el público destinatario. Factores como las diferencias lingüísticas y culturales chino-español, las preferencias de los traductores, el propósito de la traducción y los antecedentes personales del traductor contribuyen posiblemente a configurar el estilo único de un traductor.
This study examines and contrasts two complete translations of The Analects, a Chinese philosophical book translated into Spanish. One version is by Chang Shiru, a Chinese scholar, while the other is by Joaquín Pérez Arroyo, a Spanish translator. A comparative analysis using various lexical, sentence, and discursive parameters based on a self-constructed corpus has been conducted. Furthermore, for the sake of a detailed analysis, the pronoun “yo”, the keyword “superior”, and the particle “que” have been chosen as a case study. Based on the findings, Chang demonstrates a more broad lexicon and employs less complicated sentence structures than Pérez Arroyo. On the other hand, Pérez Arroyo employs a less diverse vocabulary and constructs more sophisticated sentences. Furthermore, Pérez Arroyo tends to provide more explicit translations. Nevertheless, the preference of translators towards explicitness and simplification strategies varies depending on the intended readership. Various factors, including language anuld ctural differences between Chinese and Spanish, translators’ individual habits, the intended aim of the translation, and the translator's personal background, could impact the construction of a translator’s unique style.
Display omitted
•First-time achievement of four deep thermal cycles in 7.5 cm2 tubular P-rSOCs.•Preparation of BCZI@LSC air electrodes by a wet chemical method for enhanced TPBs.•An increased current ...density of 51% is achieved by infiltration.•The cell with BCZI + LSC electrode endures 14 reversible cycles for 360 h.•Investigation of degradation mechanisms of two different electrodes.
The electrode microstructure and interface stability play an important role during thermal cycles and reversible cycles for protonic reversible solid oxide cells (P-rSOCs). In this work, the effects of microstructural change of air electrodes on the performance and cycling stability are investigated by using tubular cells with large active area (7.5 cm2). The BaCe0.5Zr0.4In0.1O3@ La0.6Sr0.4CoO3 (BCZI@LSC) composite air electrode is prepared through a wet chemical procedure based on infiltration of the LSC precursor solution into the BCZI electrolyte skeleton. The LSC nanoparticles attach to the electrolyte skeleton in a continuous film-forming morphology, affording abundant three-phase reaction boundaries (TPBs) and the continuous conducting phase. Compared to the BCZI + LSC composite air electrode prepared by conventional mechanical mixing, the cell with the BCZI@LSC electrode demonstrates an increased current density of 51%. The cell with the BCZI + LSC electrode shows acceptable stability during 14 reversible FC-EC cycles and 4 thermal cycles (between 650 °C and room temperature) for 360 h in 20% H2O-air atmosphere. The differences in stability for cells prepared by the two processes are compared and discussed.
High-resolution (HR) multispectral (MS) images contain sharper detail and structure compared to the ground truth high-resolution hyperspectral (HS) images. In this paper, we propose a novel ...supervised learning method, which considers pansharpening as the spectral super-resolution of high-resolution multispectral images and generates high-resolution hyperspectral images. The proposed method learns the spectral mapping between high-resolution multispectral images and the ground truth high-resolution hyperspectral images. To consider the spectral correlation between bands, we build a three-dimensional (3D) convolution neural network (CNN). The network consists of three parts using an encoder–decoder framework: spatial/spectral feature extraction from high-resolution multispectral images/low-resolution (LR) hyperspectral images, feature transform, and image reconstruction to generate the results. In the image reconstruction network, we design the spatial–spectral fusion (SSF) blocks to reuse the extracted spatial and spectral features in the reconstructed feature layer. Then, we develop the discrepancy-based deep hybrid gradient (DDHG) losses with the spatial–spectral gradient (SSG) loss and deep gradient transfer (DGT) loss. The spatial–spectral gradient loss and deep gradient transfer loss are developed to preserve the spatial and spectral gradients from the ground truth high-resolution hyperspectral images and high-resolution multispectral images. To overcome the spectral and spatial discrepancy between two images, we design a spectral downsampling (SD) network and a gradient consistency estimation (GCE) network for hybrid gradient losses. In the experiments, it is seen that the proposed method outperforms the state-of-the-art methods in the subjective and objective experiments in terms of the structure and spectral preservation of high-resolution hyperspectral images.
Maleic anhydride (MAH) was used as the grafting monomer, which was prepared by melt grafting reaction in the twin screw extruder with dicumyl peroxide (DCP) as the initiator, polylactic acid grafted ...with maleic anhydride (MAH-g-PLA) was successfully prepared as the interface compatibilizer. The PLA/Wood fiber/MAH-g-PLA composites were prepared by melt blending and injection molding with different proportions of compatibilizer added, within which PLA was for the matrix phase and wood fiber was for the reinforcing phase. The crystallinity, microstructure, thermal stability and dynamic thermomechanical property of the composites were studied by X-ray diffraction (XRD), scanning electron microscope (SEM), thermo gravimetric analyzer (TGA) and dynamic mechanical thermal analysis (DMA). Furthermore, the mechanical and water absorption properties of the composites were also characterized. Results showed that the tensile strength and flexural strength of the composites attained the highest at 30% MAH-g-PLA added, where the crystallinity of the composites also showed the highest value. DMA results showed that the addition of MAH-g-PLA interfacial compatibilizer increased the loss modulus of the composites and improved the toughness. Scanning electron microscopy (SEM) showed that when the MAH-g-PLA was used, wood fiber is well dispersed in the PLA matrix phase, and that the interfacial compatibility between the matrix and the enhanced phase was improved. Therefore, the addition of MAH-g-PLA could improve the interfacial compatibility of PLA/Wood fiber composites and improve the mechanical properties of the composites.
To enrich the properties of polylactic acid (PLA)-based composite films and improve the base degradability, in this study, a certain amount of poly(propylene carbonate) (PPC) was added to PLA-based ...composite films, and PLA/PPC-based composite films were prepared by melt blending and hot-press molding. The effects of the introduction of PPC on the composite films were analyzed through in-depth studies on mechanical properties, water vapor and oxygen transmission rates, thermal analysis, compost degradability, and bacterial inhibition properties of the composite films. When the introduction ratio coefficient of PPC was 30%, the tensile strength of the composite film increased by 19.68%, the water vapor transmission coefficient decreased by 14.43%, and the oxygen transmission coefficient decreased by 18.31% compared to that of the composite film without PPC, the cold crystallization temperature of the composite film increased gradually from 96.9 °C to 104.8 °C, and PPC improved the crystallization ability of composite film. The degradation rate of the composite film with PPC increased significantly compared to the previous one, and the degradation rate increased with the increase in the PPC content. The degradation rate was 49.85% and 46.22% faster on average than that of the composite film without PPC when the degradation was carried out over 40 and 80 days; the composite film had certain inhibition, and the maximum diameter of the inhibition circle was 2.42 cm. This study provides a strategy for the development of PLA-based biodegradable laminates, which can promote the application of PLA-based laminates in food packaging.
In recent years, under the pressure of resource shortage and white pollution, the development and utilization of biodegradable wood-plastic composites (WPC) has become one of the hot spots for ...scholars’ research. Here, corn straw fiber (CSF) was chosen to reinforce a poly(lactic acid) (PLA) matrix with a mass ratio of 3:7, and the CSF/PLA composites were obtained by melt mixing. The results showed that the mechanical properties of the corn straw fiber core (CSFC) and corn straw fiber skin (CSFS) loaded PLA composites were stronger than those of the CSFS/PLA composites when the particle size of CSF was low. The tensile strength and bending strength of CSFS/CSFC/PLA are 54.08 MPa and 87.24 MPa, respectively, and the elongation at break is 4.60%. After soaking for 8 hours, the water absorption of CSF/PLA composite reached saturation. When the particle size of CSF is above 80 mesh, the saturated water absorption of the material is kept below 7%, and CSF/PLA composite has good hydrophobicity, which is mainly related to the interfacial compatibility between PLA and CSF. By observing the microstructure of the cross section of the CSF/PLA composite, the research found that the smaller the particle size of CSF, the smoother the cross section of the composite and the more unified the dispersion of CSF in PLA. Therefore, exploring the composites formed by different components of CSF and PLA can not only expand the application range of PLA, but also enhance the application value of CSF in the field of composites.
PDF
