西式火腿配方设计原则及调配方法

西式火腿类产品是以盐水注射、滚揉腌制等工艺手段达到快速腌制目的,采用低温杀菌、低温贮运的盐水火腿,它以其鲜嫩味美而倍受广消费者的喜受。主要介绍西式火腿类产品的配方原则和调配方法。     

杏树岗地区正向反转构造与裂缝研究

杏树岗地区主要经历了拉张沉降期和反转构造期。拉张沉降期杏树岗地区主要形成NNW向的高角度正断层,同时泉头组地层形成了一组NW向的拉张破裂裂缝;反转构造期杏树岗地区主要形成呈NNE-NNW向展布的正断式反转构造,同时泉头组地层形成了一组近NE向的纵张缝、一组NW向的拉张破裂缝和近NS、NNW向的两组共轭剪裂缝。沉降期间泉头组地层的沉积物基本处于塑性状态,构造裂缝不发育,且此期间形成的构造裂缝经历了较长时间的成岩作用,多被方解石充填,有效性低。反转构造期间泉头组地层已经成岩,在挤压作用下形成了一系列构造裂缝,该时期形成的裂缝以高角度裂缝和直裂缝为主,充填程度较低。反转构造期是杏树岗地区构造裂缝形成的主要时期。     

离子注入工艺技术

本文介绍了离子注入工艺的基本特点和工艺中应注意的几个问题，对离子注入在浅结形成及化合物半导体集成电路工艺中的应用进行了描述。     

Multi-service small-cell cloud wired/wireless access network based on tunable optical frequency comb

In this paper, we demonstrate a novel multi-service wired/wireless integrated access architecture of cloud radio access network (C-RAN) based on radio-over-fiber passive optical network (RoF-PON) system, which utilizes scalable multiple-frequency millimeter-wave (MF-MMW) generation based on tunable optical frequency comb (TOFC). In the baseband unit (BBU) pool, the generated optical comb lines are modulated into wired, RoF and WiFi/WiMAX signals, respectively. The multi-frequency RoF signals are generated by beating the optical comb line pairs in the small cell. The WiFi/WiMAX signals are demodulated after passing through the band pass filter (BPF) and band stop filter (BSF), respectively, whereas the wired signal can be received directly. The feasibility and scalability of the proposed multi-service wired/wireless integrated C-RAN are confirmed by the simulations.     

一种具有超强电荷积累效应的高优值超结SOI LDMOS

A novel silicon-on-insulator(SOI) super-junction(SJ) LDMOS with an ultra-strong charge accumulation effect is proposed. It has two key features: an assisted-accumulation trench-type extending gate(TEG) with a high-k(HK) dielectric and a step-dopedN pillar(TEG-SD SJ LDMOS). In the on-state, electrons accumulate at the sidewall of the HK dielectric from the source to the drain by the TEG. Furthermore, the high permittivity of the HK dielectric leads to an ultra-strong charge accumulation effect. As a result, an ultra-low resistance current path is formed. The specific on-resistance(Ron;sp/ is thus greatly reduced and is independent of the drift doping concentration. In the off-state, the step-dopedN pillar effectively suppresses the substrate-assisted depletion effect by charge compensation. Moreover, the reshape effect of the HK dielectric and the new electric field(E-field) peak introduced by the step-dopedN pillar enhance the drift region E-field. Hence, the BV is improved. Simulation indicates that the TEG-SD SJ LDMOS achieves an extremely low Ron;sp of 1.06 m cm2 and a BV of 217 V. Compared with the conventional SJ LDMOS, the TEG-SD SJ LDMOS decreases the Ron;sp by 77.5% and increases the BV by 33%,exhibiting a high figure of merits(FOM=BV2/Ron;sp/ of 44 MW/cm2.     

地域与建筑类型对低环温空气源热泵减碳量定量评估的影响分析

针对低温空气源热泵减碳量定量评估方法缺失的问题,基于DeST与GB 55015—2021的规定得出该类机组的标准化年使用条件,并采用哈尔滨实测气象数据进行了验证。依据T/CECA-G 0164—2022的规定,提出了低温空气源热泵减碳量的评估方法。通过实验室的测试数据及自行编制的计算软件对2台样机进行了减碳量评估,结果表明：在不同建筑类型应用时,低环温空气源热泵减碳量差距最大为74%;不同城市的减碳量差距最大为28%;寒假的设置对学校建筑减碳量的影响为24%。研究结果对低温空气源热泵的应用具有参考价值。     

低滞后刷式密封泄漏特性试验研究

模拟航空发动机静态和动态工况,对低滞后刷式密封的泄漏特性进行试验研究,研究转速、进出口压差和温度等参数对低滞后刷式密封泄漏特性的影响规律;通过普通和低滞后刷式密封的试验对比,研究普通刷式密封的滞后现象,并进行低滞后刷式密封的持久试验。试验结果表明:低滞后刷式密封具有优异的密封性能,在动态试验中,刷丝具有良好的跟随性,缓解了刷丝滞后效应;低滞后刷式密封具有持久保持优异密封性能的潜力。     

基于事件触发的二阶多智能体领导跟随一致性

研究二阶多智能体系统在固定有向拓扑下的领导跟随一致性问题.为了节省网络和计算资源,给出一种基于事件触发控制的一致性算法.针对每个跟随者智能体,设计基于状态误差形式的触发函数,只有当状态误差满足一定条件,即触发函数取值为零时智能体才触发事件,同时更新并传递自身的采样信息,在两个相邻事件触发时刻之间,控制输入只受领导者控制信号的影响.利用模型变换、矩阵理论和Lyapunov稳定性理论给出多智能体系统达到领导跟随一致性的充分条件.仿真结果验证了理论方案的可行性和有效性.     

压力平衡型指尖密封泄漏特性试验研究

模拟航空发动机静态和动态工况,试验研究转速、压比和温度等参数对压力平衡型指尖密封泄漏特性的影响规律,并比较标准型指尖密封和压力平衡型指尖密封的性能。试验结果表明:压力平衡型指尖密封能有效缓解滞后现象,具有优异的密封性能;随着压比的上升,泄漏参数先急剧上升,然后趋于定值;随着温度、转速的上升,泄漏参数减小;与标准型指尖密封相比,350℃高温工况下压力平衡型指尖密封的静态泄漏参数下降约29.4%,动态泄漏参数下降约34.2%。     

智能变电站二次电缆回路建模方法研究与应用

当前智能变电站信息化模型中缺少二次电缆回路模型,此缺失不利于智能变电站全面的在线监视和运维诊断,同时也阻碍了智能变电站信息数字化发展.在此背景下,提出一种智能变电站二次电缆回路建模方法.首先,建立二次电缆回路模型;然后,基于该模型,设计二次电缆回路配置流程.通过二次电缆回路模型文件可视化工具实现智能变电站二次电缆回路多...