A Synchronization Acquisition Algorithm Based on the Frequency Hopping Pulses Combining

As modern electromagnetic environments are more and more complex, the anti-interference performance of the synchronization acquisition is becoming vital in wireless communications. With the rapid development of the digital signal processing technologies, some synchronization acquisition algorithms for hybrid direct-sequence(DS)/frequency hopping(FH)spread spectrum communications have been proposed.However, these algorithms do not focus on the analysis and the design of the synchronization acquis...     

Particulate flow modelling in a spiral separator by using the Eulerian multi-fluid VOF approach

The Euler-Euler model is less effective in capturing the free surface of flow film in the spiral separator,and thus a Eulerian multi-fluid volume of fluid(VOF) model was first proposed to describe the particulate flow in spiral separators. In order to improve the applicability of the model in the high solid concentration system, the Bagnold effect was incorporated into the modelling framework. The capability of the proposed model in terms of predicting the flow film shape in a LD9 spiral separat...     

Incremental Learning of Radio Modulation Classification Based on Sample Recall

Radio modulation classification has always been an important technology in the field of communications. The difficulty of incremental learning in radio modulation classification is that learning new tasks will lead to catastrophic forgetting of old tasks. In this paper, we propose a sample memory and recall framework for incremental learning of radio modulation classification. For data with different signal-to-noise ratios, we use a partial memory strategy by selecting appropriate samples for me...     

肝胆肿瘤中肿瘤特异性CircRNA衍生抗原肽的鉴定（英文）OA

基于肿瘤抗原的免疫治疗的应用受到验证免疫原性肽稀缺性的阻碍。本研究旨在研究环状RNA (circ RNA)在肝胆肿瘤类器官中作为肿瘤抗原肽新来源的潜力。使用RNA测序(RNA-seq)和基于算法的评分工具,预测3950个翻译的肿瘤特异性环状RNA在27个类器官中产生18 971个抗原肽。从抗原格局来看,11个氨基酸长度(mer)肽和人白细胞抗原(HLA)-A结合肽具有最高的免疫原性相关评分。在分析的3/5类器官中,有13个预测抗原肽通过质谱(MS)免疫肽组学被直接确认为HLAA、HLA-B和HLA-C (HLA-ABC)结合肽。在流式细胞术和酶联免疫吸附试验(ELISA)中,由HLAABC分子呈递的circ RNA衍生的肿瘤特异性肽刺激CD8 (CD8) T细胞,显示CD107a干扰素γ (IFNγ)共表达和IFNγ分泌增加。免疫原性环状RNA衍生肽诱导的靶向类器官的细胞毒性T细胞活性在杀伤实验中得到验证。值得注意的是,来自circ TBC1D15的抗原肽YGFNEILKK不仅被认为是类器官的HLA-ABC呈递肽,而且还显著降低了肿瘤类器官的存活率。本研究的发现强调了产生肿瘤抗原的一个...     

从太赫兹成像到太赫兹无线通信（英文）OA

太赫兹（THz）技术可能是公众最熟悉的一种强大的成像工具,因为该技术已经被应用于安全工作和医疗扫描,生成了许多令人印象深刻的图像,而这些图像是使用其他技术无法获得的。随着5G移动网络的推出,对6G无线通信的研究正在升温。据设想,太赫兹技术将被用于6G和未来的无线通信。在本文中,回顾了太赫兹技术是如何被用于成像和无线通信的,确定了该领域的最先进的发展,然后检查和比较这两种应用中的常见设备和问题。本文考虑了整合太赫兹成像/感应和无线通信的可能性,提出并讨论了挑战和未来的前景。事实表明,太赫兹技术确实是未来成像和无线通信的一项关键技术。     

Enhancing the environmental durability and flexibility of polymer electronics through nanostructured molecular-level protection tethered to surfaces

<正>Flexible,biocompatible,and stretchable epidermal electronic devices possess remarkable capability to seamlessly interface with bionic biological systems and maintain reliable operation even during continuous body movements [1,2].Consequently,they hold immense promise for advanced wearable and implantable applications,     

Powering a wearable sweat biosensor for continuous and non-invasive monitoring using a flexible perovskite solar cell

<正>The rapid growth of the Internet of Things(IoT) in recent years has spurred the progress of portable electronics. Wearable electronic devices have the capability to continuously monitor physical vital signs and biochemical markers [1,2]. Among these,wearable biosensors have the potential to analyze human epidermal sweat, which contains valuable information for disease diagnosis and fitness tracking, in a continuous and non-invasive manner.     

Simultaneous synthesis of sub and above-ambient heat exchanger networks including expansion process based on an enhanced superstructure model

Synthesis of heat exchanger networks including expansion process is a complex task due to the involvement of both heat and work. A stream that expands through expanders can produce work and cold load, while expansion through valves barely affects heat integration. In addition, expansion through expanders at higher temperature produces more work, but consumes more hot utility. Therefore, there is a need to weigh work production and heat consumption. To this end, an enhanced stage-wise superstructure is proposed that involves synchronous optimization of expander/valve placement and heat integration for each pressure-change sub-stream in stages. A mixed-integer nonlinear programming (MINLP) model is established for synthesizing sub and aboveambient heat exchanger networks with multi-stream expansion, which explicitly considers the optimized selection of end-heaters and end-coolers to adjust temperature requirement. Our proposed method can commendably achieve the optimal selection of expanders and valves in a bid for minimizing exergy consumption and total annual cost. Four example studies are conducted with two distinct objective function (minimization of exergy consumption and total annual cost, respectively) to illustrate the feasibility and efficacy of the proposed method.     

Spin injection into heavily-doped n-GaN via Schottky barrier

Spin injection and detection in bulk GaN were investigated by performing magnetotransport measurements at low temperatures. A non-local four-terminal lateral spin valve device was fabricated with Co/GaN Schottky contacts. The spin injection efficiency of 21% was achieved at 1.7 K. It was confirmed that the thin Schottky barrier formed between the heavily ndoped GaN and Co was conducive to the direct spin tunneling, by reducing the spin scattering relaxation through the interface states.     

Improving the films quality of Sn-based perovskites through additive treatment for high-performance light-emitting diodes

<正>Hybrid lead halide perovskites have received great attention in the field of light-emitting diodes(LEDs) owing to their excellent optoelectronic properties, low cost, and high color purity. To data, the external quantum efficiency(EQE) of lead halide perovskites LEDs has been reported to exceed 20%^[1].