基于SiP技术多核处理器微系统设计

系统级封装SiP(System in a Package)已成为后摩尔时代延续摩尔定律的主要技术路线,电子装备小型化和多功能化的推动,使其在领域具有广阔前景。描述了一种基于SiP技术小型化多核信号处理的实现方案,详细讲述了芯片级设计及封装的具体方法和思路,提出了一种基于SiP技术的多核处理器微系统设计及实现。

基于SiP技术的信号处理通道设计

随着军用无人机等航电系统不断朝着小型化、智能化、综合化的方向发展,如何有效满足装备的低SWaP(Size,Weight and Power)要求成为一大难题。介绍了某型宽带综合化数字预处理模块的研制,利用“裸芯片+高密度基板”系统级封装(SiP)的方式对信号处理平台(DSP、FPGA、SerDes和DDR芯片)进行集成,替代目前业界普遍采用的“封装芯片+印制板+平面集成”的传统方式,实现宽带综合化数字信号处理模块的高密度集成。在主要性能指标(可编程逻辑资源、定点处理能力、浮点处理能力、数据传输速率)不变的情况下,使得信号处理模块的面积降低为45 mm×45 mm,重量降低到103 g。

SiP模组自动点胶贴片技术

SiP模组的自动点胶贴片相比手动方式,存在胶量少、对位精度难以控制、芯片剪切强度低以及电性能指标下降等工艺难题。在进行大量的自动点胶贴片工艺试验分析基础上,通过正交试验方法实现工艺参数优化,归纳总结出一套有效的自动点胶贴片工艺方案,成功应用于各类型平台上的毫米波相控阵SiP模组生产中,显著提升了产品的芯片贴装质量。

基于数字中频预处理专用芯片的SiP设计

随着电子科学技术的快速发展,系统级封装(SiP)技术成为实现信号处理系统小体积、轻重量、低功耗及低成本方面要求的又一有效途径。针对数字中频预处理应用要求,提出了一种将波形产生、数字滤波处理、数字信号上传和下发及时钟和同步等复杂预处理功能集成设计的方法,采用PBGA225封装形式,大大缩小了系统体积和功耗。

Effects of Different Sterilization Methods on the Product Characteristics of Sichuan Industrialized Huiguorou

Pasteurization,116 and 121℃sterilization were used in the development of Sichuan Industrial Huiguorou.The sensory,color,texture,lipid oxidation,preservation and flavor substance types and contents of the products were determined,and the effects of different sterilization methods on product characteristics were compared.The results showed that pasteurization was the best way to maintain the edible quality of products,but the storage period of products was very short,so the products could only be quickly distributed and consumed.Sterilization at 116℃and sterilization at 121℃could ensure the shelf life of Huiguorou under non-refrigeration conditions,and effectively solve the problem of long-term storage and transportation of Sichuan meat dishes.However,higher temperature had more or less adverse effect on the flavor of the product,and the product texture was too soft.It suggested that the better way was to sterilize at 116℃,which had less adverse effect on the flavor of the product,and could greatly prolong the non-refrigerated storability of the product,and increase the content of aldehydes and esters,so as to improve the flavor.

Observational study of enzyme in instrument cleaning for sterile reprocessing and factors impacting enzyme activity

Objective To evaluate the application of enzyme in instrument cleaning for hospital sterile reprocessing and different factors that impact the enzyme activity.Methods Standard soil objects for instrument cleaning quality evaluation,as testing coupons,were identified and used to evaluate different cleaning processes designed with varied conditions.Between testing groups using enzymatic detergent versus non-enzymatic detergent,the amount of residual protein on the testing coupons were quantified and compared at different soaking time(10min,20min,30min,45min and 60min).Then,within the enzymatic detergent group,different testing conditions were further explored by adjusting factors,in⁃cluding the soaking temperature(25°C,30°C and 45°C),use solution pH(7.0,8.0),and enzyme dosing(1/80,1/40,1/20,3/40,1/10 and 3/20 in v/v).Then,through an observational comparative study for each testing condition,the time needed to achieve a complete soil removal through visual inspection of the testing coupons was documented for analyses.Results In the test of enzymatic detergent versus non-enzymatic detergent,the non-enzymatic group did not show an obvious decline in the residual protein amount(1069μg at 10 min vs.1042μg at 60 min),whereas the enzymatic group showed significant decrease in residual protein quantity(947μg at 10 min vs.620μg at 60 min).Meanwhile,the amounts of the residual protein at different time points in the enzyme group(947μg at 10 min,864μg at 20 min,812μg at 30 min,691μg at 45 min,and 620μg at 60 min)were consistently lower than those at the same time schedule in the non-enzyme group(1069μg at 10 min,1069μg at 20 min,1067μg at 30 min,1059μg at 45 min,and 1042μg at 60 min).Furthermore,within the enzymatic group,the soaking temperature,use solution pH and enzyme dosing factors all appear to impact the enzyme activity and significantly contribute to the cleaning outcomes.Specifi⁃cally,the higher soaking temperature,higher use solution pH and higher enzyme dosing showed 58.4%,20.0%and 34.4%time reduction to completely remove the soil on the testing coupons,respectively.Conclusion Enzyme seems to play a significant role in the instrument cleaning process for hospital sterile reprocessing.The soaking temperature,cleaning use solution pH,and enzyme dosing all appear to be critical factors impacting the enzyme activity and thus the overall cleaning outcomes.In practice,cleaning process verification should be considered to ensure the optimal use conditions for enzyme cleaning performance are well-understood and consistently achieved at the facility level.

一种基于SiP技术的高性能信号处理电路设计

系统级封装(System in a Package,SiP)已成为后摩尔时代缩小电子器件体积、提高集成度的重要技术路线,是未来电子设备多功能化和小型化的重要依托。针对信号处理系统小型化、高性能的要求,采用SiP技术设计了一种高性能信号处理电路。该SiP电路集成了多种裸芯,包括DSP、NOR Flash、DDR3和千兆网PHY芯片,实现了一种通用的信号处理核心模块的小型化,相比于传统板级电路在同样的功能和性能的条件下,该SiP电路的体积和重量更小。

超洁净热灌装生产线关键工艺技术研究

本文对影响瓶过氧乙酸湿法杀菌的超洁净热灌装生产线的关键工艺技术进行了全面的研究,初步明确了该生产线的关键工艺技术及生产管理控制要点,对于生产线的管理和产品质量管控具有一定的指导意义。

5G语音EPS Fallback主叫流程优化思路

5G网络实现语音呼叫的方式有2种,一种是EPS Fallback回落方式,另一种是目标VoNR非回落方式。由于EPS Fallback方式需要先回落至4G网络,主叫接通时延相比VoNR方式要慢1 s左右。提出针对EPS Fallback主叫流程的优化思路,通过网络侧升级改造,最终达到EPS Fallback主叫时延与VoNR主叫时延一致的效果。

Study on Mutagenic Effect of Space Flight in Two-line Sterile Rice

Seeds of two-line sterile rice cultivars Zhu 1S and Lu 18S were carried into space by ＂Shijian 8＂ breeding recoverable satellite, then planted in ground. Mutagenic effects from space induction were compared with those from y-irradiation and complex processing of space induction and y-irradiation. The results showed that agronomic effect was stimulated in Mo progenies of the two-line sterile rice varieties treated by space flight, and their radiosensitivities to the irradiation of space flight performed non-sensitive. The order of mutation frequency was determined to be SP ＋ γ 〉 γ 〉 SP in M2 generation. And a series of mutated elites（individuals） were screened. Physiological indices of mutants screened like the activity of protective enzymes were measured to explore the physiological and biochemical basis of biological effect in space environment to two-line sterile rice. The results of this study show that space mutation breeding is an effective novel mean for breeding.

不同工艺对养肝降草合剂整体质量的影响

目的考察提取、浓缩、离心、灭菌工艺对养肝降草合剂整体质量的影响。方法分析采用菲罗门LunaC_(18)色谱柱(250mm×4.6mm,5μm);流动相乙腈-0.1%磷酸,梯度洗脱;体积流量1mL/min;柱温20℃。建立HPLC指纹图谱,测定红景天苷、栀子苷、连翘酯苷A、特女贞苷、甘草酸、白术内酯Ⅲ的含量,并计算其转移率。结果15批不同工艺下样品指纹图谱中有20个共有峰,相似度大于0.950。6种成分在各自范围内线性关系良好(r≥0.9990),平均加样回收率96.96%~106.69%,RSD0.97%~2.87%,转移率大于80%,总转移率大于90%。结论养肝降草合剂在不同工艺下均具有较好的稳定性。

用SIP合成分数研究儿童在两类假设情境中的社会信息加工特点

用假设情境问卷测量亲社会、一般、攻击性三组儿童在两类假设情境中的社会信息加工(SIP)特点,用累加法形成“SIP合成分数”作为儿童在假设情境中社会信息加工特点的综合指标,用2×3两因素方差分析研究分组和情境对儿童SIP的影响。研究表明“SIP合成分数”作为假设情境中一组SIP变量的综合指标具有良好的鉴别力和适用性,分组和情境对儿童SIP适应性的影响具有交互性。

新型功能性冰在食品杀菌保鲜中的应用与展望

冰藏保鲜是最广泛的食品保存方法之一,提高冰的保鲜能力是食品保藏领域的重点难点问题。然而,传统冰抑制微生物活性的能力有限,制约食品行业的进一步发展。因此,电解水冰、臭氧冰、等离子体活化水冰、抑菌物质添加冰、流化冰、复合功能性冰等保鲜能力明显优于传统冰的新型功能性冰,已被广泛应用于食品保鲜领域,拥有广阔的发展空间与应用前景。目前,研究具有更佳杀菌保鲜效果的新型功能性冰已成为食品行业研究的热点。因此,本文综述了上述新型功能性冰的制备工艺及杀菌保鲜机制,以期为新型功能性冰的进一步开发提供理论基础及科学依据,推动新型功能性冰在食品杀菌保鲜中的应用。

使用JAINSIP开发基于SIP协议的应用

会话发起协议(SIP)将在 3G网络中发挥重要的作用,而JAINSIP是用Java语言实现的SIP类库。简要介绍了SIP协议的规范,详细分析了JAINSIP的体系结构和实现机制,并用代码片断和交互图的方式描述了基于SIP协议应用的开发过程。用JAINSIP开发基于SIP协议的应用不仅可以提高开发效率,而且将使应用程序获得较高的可靠性和较好的移植性。

基于进程的SIP终端的设计

设计实现了基于进程的嵌入式SIP终端.首先分析了SIP协议的结构、消息类型和基于SIP协议会话创建流程.其次,详细讲解了基于进程的SIP终端的设计及其功能和流程.最后,对SIP终端进行了测试,对应用程序分别进行了代码及功能正确性的验证.结果达到了设计要求.

寒地秸秆食用菌基质化利用及灭菌工艺研究与展望

食用菌营养丰富,且中国食用菌产量大,市场和消费保持平稳增长,针对现有食用菌栽培基质灭菌工艺中存在的问题,提出了一种新型智能化全自动高压灭菌系统。该文首先介绍了利用寒地秸秆培育食用菌栽培基质的组成部分和寒地玉米秸秆的营养成分;其次,阐述了细菌结构和常用灭菌方法;最后,介绍了新型智能化全自动高压灭菌系统的组成部分,该系统将传统间歇式灭菌转变为连续式灭菌,在大批量持续菌料灭菌的同时,能耗也比传统灭菌装置有所降低。该研究以期为食用菌栽培基质的灭菌工艺提供一条可探索之路。

连消灭菌工艺及自动控制系统设计

研究了生物制药或食品生产中连消灭菌工艺及自动控制系统的设计。针对连消灭菌工艺的目标和要求,考虑到热传导、流体力学和传质等因素,设计了多种发酵原料的连消灭菌工艺,开发了基于PLC和PID控制的自动控制系统。系统能够根据工艺要求自动控制灭菌过程中的温度、压力和流量等关键参数,实现一键启停操作,简化了操作流程,提高了灭菌工艺的稳定性和可靠性。通过实际运行,验证了连消灭菌工艺及自动控制系统的可行性和有效性。

基于SiP技术的雷达信号处理微系统设计

系统级封装SiP(System in a Package)已成为后摩尔时代延续摩尔定律的主要技术路线,是未来电子装备小型化和多功能化的重要依托,在微纳电子设计和制造领域具有广阔的应用市场和发展前景。介绍了系统级封装技术的发展和应用情况,根据雷达信号处理系统芯片化、集成化、高能效、高可靠的发展需求,探讨了SiP技术在雷达信号处理系统中应用的可行性,提出了一种基于SiP技术的雷达信号处理微系统设计及实现,SiP产品比PCB板卡面积缩小60%以上。

改良腔镜手术器械包全流程管理模式在消毒供应中心的应用价值分析

目的:探讨改良腔镜手术器械包全流程管理模式在消毒供应中心的应用价值。方法:选取中山大学附属第一医院供应片区2020年10-12月管理的腔镜器械6 388份作为对照组,选取2021年4-6月管理的腔镜手术器械5 999份作为观察组。两组器械均属于日常手术所用的腔镜手术器械。对照组进行常规管理,观察组采用改良腔镜手术器械包全流程管理模式。分析腔镜器械包灭菌质量合格率、品管圈活动评分。结果:观察组灭菌合格率高于对照组(P<0.001)。两组手法运用评分比较,差异无统计学意义(P>0.05);观察组团队精神、专业知识、沟通协调能力、活动信心和责任荣誉评分均高于对照组(P<0.05)。结论:改良腔镜手术器械包全流程管理模式在消毒供应中心的应用价值较高,可以显著提高灭菌合格率,提升护理人员的综合能力,该管理模式对于强化“患者安全”服务理念,深化手术室消毒供应中心一体化管理模式具有重要意义。