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辅助应用右美托咪定对老年下肢骨折全身麻醉患者苏醒期躁动及机体应激反应的影响

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当代医学 2024年第1期30卷 94-98页

作者：韦坚志蒋思文广州市中西医结合医院麻醉科广东广州510800

目的探讨辅助应用右美托咪定对老年下肢骨折全身麻醉患者苏醒期躁动及机体应激反应的影响。方法选取2021年6—12月广州市中西医结合医院收治的50例老年下肢骨折全身麻醉患者作为研究对象,依据麻醉药物的不同分为A组与B组,每组25例。A组... 详细信息

目的探讨辅助应用右美托咪定对老年下肢骨折全身麻醉患者苏醒期躁动及机体应激反应的影响。方法选取2021年6—12月广州市中西医结合医院收治的50例老年下肢骨折全身麻醉患者作为研究对象,依据麻醉药物的不同分为A组与B组,每组25例。A组麻醉诱导前给予右美托咪定,B组麻醉诱导前给予氯化钠溶液,比较两组自主呼吸恢复时间、睁眼时间、苏醒期躁动反应、机体应激反应及并发症发生情况。结果两组自主呼吸恢复时间、睁眼时间比较差异无统计学意义。A组拔管时、拔管后5 min苏醒期躁动反应Riker镇静与躁动(RSAS)评分均低于B组,差异有统计学意义(P<0.05)。术前、用药后30min,两组去甲肾上腺素(NE)、肾上腺素(E)及皮质醇(Cor)水平比较差异无统计学意义;用药后60min、术毕,A组NE、E、Cor水平均低于B组,差异均有统计学意义(P<0.05)。A组寒战发生率低于B组,差异有统计学意义(P<0.05);两组低氧血症、导管脱出发生率比较差异无统计学意义。结论右美托咪定能有效改善老年下肢骨折全身麻醉患者苏醒期躁动及机体应激反应,减少并发症发生。

关键词：下肢骨折老年患者右美托咪定苏醒期躁动机体应激反应并发症

中草药饲料添加剂在养猪生产中的应用研究进展

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黑龙江畜牧兽医 2024年第13期 22-26页

作者：司雨豪钟琦周梦洁周建红蒋思文柴进华中农业大学动物科学技术学院武汉430070 当阳市畜牧兽医中心湖北当阳444100

中草药具有毒副作用小、耐药性较低、产品残留量低、经济环保且高效安全的优点,是在抗生素逐渐被限制使用后养猪生产上优秀的“替抗”饲料添加剂。文章从中草药饲料添加剂对生猪免疫机能、疾病防控、生长性能和繁殖性能影响等方面阐述... 详细信息

中草药具有毒副作用小、耐药性较低、产品残留量低、经济环保且高效安全的优点,是在抗生素逐渐被限制使用后养猪生产上优秀的“替抗”饲料添加剂。文章从中草药饲料添加剂对生猪免疫机能、疾病防控、生长性能和繁殖性能影响等方面阐述了中草药饲料添加剂在养猪生产上的应用及优势,以期为生产实践提供指导。

关键词：中草药猪免疫机能疾病防控生长性能繁殖性能

Optimizing feeding regimen of replacement gilts to improve their reproductive performance and retention rate of their first 2 parities

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Animal Nutrition 2023年第1期12卷 227-235页

作者： Jiajian Tan Miaomiao Wang Haiqing Sun Chao Wang Hongkui Wei siwen jiang Yuanfei Zhou Jian Peng Department of Animal Nutrition and Feed Science College of Animal Science and TechnologyHuazhong Agricultural UniversityWuhan 430070China Key Lab of Agricultural Animal Genetics Breeding and Reproduction of Ministry of Education&Key Lab of Swine Genetics and Breeding of Ministry of AgricultureHuazhong Agricultural UniversityWuhan 430070China The Cooperative Innovation Center for Sustainable Pig Production Wuhan 430070China Guangxi Yang Xiang Joint Stock Company Guigang 537000China

The effects of age,body weight(BW),and backfat thickness(BF)of replacement gilts at first estrus and first mating on their subsequent reproductive performance and retention of their first 2 parities as sows was evaluated.A total of 3,025 Danish replacement gilts were categorized by farm(allocated to 4 farms),cross combination,age,BW and BF at first estrus and first mating,estrous cycle number at first mating,and flush feeding before first *** result shows that all the factors mentioned above were significantly associated with reproductive performance and retention rates of the first 2 *** 3 had more piglets born alive per litter(BA)(P<0.05).Farms 3 and 4 had more healthy piglets per litter(HP)(P<0.05).Farm 4 had the most piglets weaned per litter(PW)(P<0.05).Landrace×Landrace×Yorkshire(L×L×Y)replacement gilts had the most total piglets born per litter(TB),BA,HP,PW and a higher retention rate of the 2 parities than Landrace×Yorkshire(L×Y)replacement gilts(P<0.05).In addition,flush feeding before first mating had the most TB,BA,HP,PW,and a higher retention rate of the 2 parities than no flush feeding(P<0.05).Because the effects of replacement gilts rearing parameters on reproductive performance traits differed,we used 100 replacement gilts as a unit and the total number of weaned piglets from the first 2 parities as a new *** gilts undergoing their first estrus between 180 and 210 d of age at 115 to 124.9 kg BW and 14 to 15 mm BF had significantly higher reproductive indexes for their first 2 parities per 100 replacement *** gilts that mated between 210 and 230 d of age at 140 to 149.9 kg BW and 15 to 16 mm BF had optimal reproductive *** results provide a new insight into the complex relationships among these reproductive performance traits and may help guide successful management of replacement gilts as a pivotal starting point for future fertility and longevity of rearing herds.

关键词： Replacement gilts Rearing parameter Reproductive performance Retention rate

3D‑Printed Carbon‑Based Conformal Electromagnetic Interference Shielding Module for Integrated Electronics

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Nano-Micro Letters 2024年第5期16卷 87-101页

作者： Shaohong Shi Yuheng jiang Hao Ren siwen Deng Jianping Sun Fangchao Cheng Jingjing Jing Yinghong Chen State Key Laboratory of Featured Metal Materials and Life‑Cycle Safety for Composite Structures School of ResourcesEnvironment and MaterialsGuangxi UniversityNo.100Daxuedong RoadNanning 530004People’s Republic of China State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan UniversitySichuan UniversityNo.24 South Section 1Yihuan RoadChengdu 610065People’s Republic of China

Electromagnetic interference shielding(EMI SE)modules are the core com-ponent of modern ***,the tra-ditional metal-based SE modules always take up indispensable three-dimensional space inside electronics,posing a major obstacle to the integra-tion of *** innovation of integrating 3D-printed conformal shielding(c-SE)modules with packaging materials onto core electronics offers infinite possibilities to satisfy ideal SE func-tion without occupying additional ***,the 3D printable carbon-based inks with various proportions of graphene and carbon nanotube nanoparticles are well-formulated by manipulating their rheological ***,the free-constructed architectures with arbitrarily-customized structure and multifunctionality are created via 3D *** particular,the SE performance of 3D-printed frame is up to 61.4 dB,simultaneously accompanied with an ultralight architecture of 0.076 g cm^(-3) and a superhigh specific shielding of 802.4 dB cm3 g^(-1).Moreover,as a proof-of-concept,the 3D-printed c-SE module is in situ integrated into core electronics,successfully replacing the traditional metal-based module to afford multiple functions for electromagnetic compatibility and thermal ***,this scientific innovation completely makes up the blank for assembling carbon-based c-SE modules and sheds a brilliant light on developing the next generation of high-performance shielding materials with arbitrarily-customized structure for integrated electronics.

关键词： 3D printing Carbon-based nanoparticles Conformal electromagnetic interference shielding Integrated electronics

Transcriptional response of porcine skeletal muscle to feeding a linseed-enriched diet to growing pigs

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Journal of Animal Science and Biotechnology 2016年第2期7卷 238-247页

作者： Hongkui Wei Yuanfei Zhou Shuzhong jiang Feiruo Huang Jian Peng siwen jiang Department of Animal Nutrition and Feed Science College of Animal Science and Technology Huazhong Agricultural University Key Lab of Agricultural Animal Genetics Breeding and Reproduction of Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture Huazhong Agricultural University

Background： To investigate the effect of feeding a linseed-enriched diet to growing-finishing pigs on gene expression in skeletal muscle, pigs were fed with a linseed-enriched diet for 0, 30, 60 and 90 d. Transcriptional profiles of longissimus dorsi muscle were measured using Affymetrix ***： Results showed that 264 genes were identified as differentially expressed genes（DEGs）. The strongest transcriptional response was clearly observed at 30 d. DEGs were assigned to several main functional terms,including transcription, apoptosis, intracellular receptor-mediated signaling, muscle organ development, fatty acid metabolic process, cell motion, regulation of glucose metabolic process, spermatogenesis and regulation of myeloid cell differentiation. We also found that transcriptional changs of several transcription cofactors might contribute to n-3 PUFAs regulated gene expression. In addition, the increased expression of IGF-1, insulin signaling pathway and the metabolism of amino acids might involve in the muscle growth induced by feeding a linseedenriched diet. The results also provide the new evidence that the expression changes of PTPN1, HK2 and PGC-1αmight contribute to the regulation of insulin sensitivity by n-3 ***： Our finding provided correlative evidence that feeding the linseed enriched diet affact expression of genes involved in insulin signaling pathway and the metabolism of amino acids.

关键词： Linseed m RNA expression n-3 PUFAs Skeletal muscle

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多端柔性直流输电系统动态附加频率控制策略

电力自动化设备 2022年第1期42卷 164-170页

作者：刘昊宇刘崇茹蒋思雯华北电力大学新能源电力系统国家重点实验室北京102206

附加频率控制利用基于电压源型换流器的多端柔性直流输电(VSC-MTDC)系统直流电压变化传递故障交流系统频率变动,促使非故障交流系统所连电压源型换流器(VSC)消纳不平衡功率参与频率调节。然而固定下垂系数灵活性不足,在不平衡功率分配... 详细信息

附加频率控制利用基于电压源型换流器的多端柔性直流输电(VSC-MTDC)系统直流电压变化传递故障交流系统频率变动,促使非故障交流系统所连电压源型换流器(VSC)消纳不平衡功率参与频率调节。然而固定下垂系数灵活性不足,在不平衡功率分配时忽略VSC实时运行状态与交流网络稳定性,无法保证系统参与频率调整的同时安全稳定运行。通过研究频率变动造成的功率不平衡量分配和直流电压下垂系数的定量关系,提出一种计及系统运行状态的VSC-MTDC动态附加频率控制策略,将VSC功率裕度和交流网络频率变化量引入下垂系数,动态调整不平衡功率的分配比例。仿真结果证明,应用动态附加频率控制进行频率调节后,频率偏差较小的交流网络在所连VSC功率裕度较大时能承担更多不平衡功率,而频率偏差较大的交流网络所连换流站不平衡功率配比下降,VSC-MTDC系统安全稳定运行水平得到显著改善。

关键词：基于电压源型换流器的多端柔性直流输电动态附加频率控制动态直流电压下垂系数频率偏差量功率裕度

An improved initial rotor position estimation method using high-frequency pulsating voltage injection for PMSM

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Defence Technology（防务技术） 2024年第3期33卷 19-29页

作者： Yang jiang Ming Cheng School of Electrical Engineering Southeast UniversityNanjing 210096China

High frequency pulsating voltage injection method is a good candidate for detecting the initial rotor position of permanent magnet synchronous ***,traditional methods require a large number of filters,which leads to the deterioration of system stability and dynamic *** order to solve these problems,a new signal demodulation method is proposed in this *** proposed new method can directly obtain the amplitude of high-frequency current,thus eliminating the use of filters,improving system stability and dynamic performance and saving the work of adjusting filter *** addition,a new magnetic polarity detection method is proposed,which is robust to current measurement ***,experiments verify the effectiveness of the method.

关键词： Initial position detection Signal demodulation algorithm Magnetic polarity detection Filter elimination

Highly homogeneous zero-index metamaterials make devices more compact and perform better

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Light(Science & Applications) 2024年第5期13卷 806-807页

作者： Wei-Xiang jiang State Key Laboratory of Milimeter Waves School of Information Science and EngineeringSoutheast University210096 NanjingChina

A highly homogeneous microwave zero-index metamaterial based on high-permittivity SrTiO3 ceramics is demonstrated to realize the small-aperture high-directivity *** a novel technique is a remarkable step forward to de... 详细信息

关键词： ceramics SrTiO3 Highly

Advances in Triboelectric Nanogenerators for Blue Energy Harvesting and Marine Environmental Monitoring

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Engineering 2024年第2期33卷 204-224页

作者： Yang jiang Xi Liang Tao jiang Zhong Lin Wang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro–Nano Energy and SensorsBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China Georgia Institute of Technology AtlantaGA 30332USA

Blue energy,which includes rainfall,tidal current,wave,and water-flow energy,is a promising renewable resource,although its exploitation is limited by current technologies and thus remains *** form of energy is mainly harvested by electromagnetic generators(EMGs),which generate electricity via Lorenz force-driven electron *** nano genera tors(TENGs)and TENG networks exhibit superiority over EMGs in low-frequency and high-entropy energy harvesting as a new approach for blue energy harvesting.A TENG produces electrical outputs by adopting the mechanism of Maxwell’s displacement *** date,a series of research efforts have been made to optimize the structure and performance of TENGs for effective blue energy harvesting and marine environmental *** the great progress that has been achieved in the use of TENGs in this context so far,continuous exploration is required in energy conversion,device durability,power management,and environmental *** review reports on advances in TENGs for blue energy harvesting and marine environmental *** introduces the theoretical foundations of TENGs and discusses advanced TENG prototypes for blue energy harvesting,including TENG structures that function in freestanding and contact-separation *** enhancement strategies for TENGs intended for blue energy harvesting are also ***,marine environmental applications of TENGs based on blue energy harvesting are discussed.

关键词： Triboelectric nanogenerator TENG networks Blue energy Energy harvesting Ocean sensors