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UV light spectral response of photosynthetic photochemical efficiency in alpine mosses

Journal of Plant Ecology 2010年第1期3卷 17-24页

作者： Wei Ren Hongchao Tan Jing wu Yongcui Deng yibo wu Yanhong Tang Xiaoyong Cui College of Resources and Environment Graduate University of Chinese Academy of SciencesBeijing 100049People’s Republic of China National Institute for Environmental Studies 16-2 OnogawaTsukubaIbaraki 305-0053Japan

Aims Bryophytes play an important role in primary production in harsh alpine *** other alpine plants,the alpine bryophytes are often exposed to stronger UV radiation than lowland *** growing under high UV radiation may differ from those from low UV regimes in their physiological response to UV *** were to(i)test the hypothesis and to address whether and/or how alpine bryophytes differ in photosynthetic photochemical characteristics in response to UV light and(ii)understand the potential effects of UV radiation on photosynthetic photochemical process in alpine *** We examined the maximum quantum efficiency of photosystem II(PSII)photochemistry(F_(v)/F_(m))for two alpine bryophyte species,Distichium inclinatum and Encalypta alpine,from a Kobresia humilis meadow and a Kobresia tibetica wetland,respectively,in Haibei,Qinghai(3729#N,10112#E,altitude 3250 m),and for a lowland bryophyte,Polytrichum juniperinum,under different spectrum of UV *** spectral weighting function(BSWF)was obtained to evaluate the effect of UV light on the physiological response in these *** Findings 1)The maximum quantum efficiency of photosystem II photochemistry(F_(v)/F_(m))declined linearly with the increase of radiation dose in wavelengths from 250 to 420 *** effect of UV radiation on F_(v)/F_(m)decreased with higher rate from 250 to 320 nm and from 400 to 420 nm than in UVA range.2)The three species from different ecosystems contrasting in altitudes showed similar pattern of UV *** comparison with other species reported so far,the moss BSWF was among those with the most modest decrease trend with spectrum effect of UV light 50 times higher at 250 than at 420 nm.3)Under the scenario of 16%reduction of stratospheric ozone,the integrated effectiveness from 290 to 345 nm increased only 5%,suggesting that the photochemical activity of the bryophyte PSII is likely to insensitive to O3 depletion.

关键词： action spectrum bryophyte ozone Tibetan Plateau ultraviolet radiation

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Dietary supplementation of benzoic acid and essential oils combination enhances intestinal resilience against LPS stimulation in weaned piglets

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Journal of Animal Science and Biotechnology 2024年第2期15卷 878-897页

作者： Chang Cui Yulong Wei yibo Wang Wen Ma Xiaoyu Zheng Jun Wang Ziwei Ma Caichi wu Licui Chu Shihai Zhang wutai Guan Fang Chen Guangdong Provincial Key Laboratory of Animal Nutrition Control College of Animal ScienceSouth China Agricultural UniversityGuangzhou 510642China College of Animal Science and National Engineering Research Center for Breeding Swine Industry South China Agricultural UniversityGuangzhou 510642China Guangdong Laboratory for Lingnan Modern Agriculture South China Agricultural UniversityGuangzhou 510642China

Background The benefits of combining benzoic acid and essential oils(BAO)to mitigate intestinal impairment during the weaning process have been well established,while the detailed underlying mechanism has not been fully *** research has primarily focused on the reparative effects of BAO on intestinal injury,while neglecting its potential in enhancing intestinal stress *** In this study,we investigated the pre-protective effect of BAO against LPS-induced stress using a modified experimental *** were pre-supplemented with BAO for 14 d,followed by a challenge with LPS or saline to collect blood and intestinal *** Our findings demonstrated that BAO supplementation led to significant improvements in piglets’final weight,average daily gain,and feed intake/body gain ***,BAO supplementation positively influenced the composition of intestinal microbiota,increasing beneficial Actinobacteriota and Alloprevotella while reducing harmful Desulfobacterota,Prevotella and ***,BAO supplementation effectively mitigated oxidative disturbances and inflammatory responses induced by acute LPS *** was evidenced by elevated levels of T-AOC,SOD,and GSH,as well as decreased levels of MDA,TNF-α,and IL-6 in the ***,piglets subjected to LPS challenge and pre-supplemented with BAO exhibited significant improvements in intestinal morphological structure and enhanced integrity,as indicated by restored expression levels of Occludin and Claudin-1 compared to the non-supplemented *** analysis revealed that BAO supplementation enhanced the jejunal antioxidative capacity by increasing GSH-Px levels and decreasing MDA levels under the LPS challenge and stimulated the activation of the Nrf2 signaling ***,the reduction of TLR4/NF-κB/MAPK signaling pathways activation and proinflammatory factor were also observed in the jejunal of those piglets fed with ***

关键词： Anti-stress Benzoic acid Essential oils Intestine LPS Weaned piglets

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Novel de novo TRPV4 mutation identified in a Chinese family with metatropic dysplasia inhibits chondrogenic differentiation

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Genes & Diseases 2024年第3期11卷 83-86页

作者： Ping Wei Weizhe Shi Tianying Nong Caixia Xian Xia Li Zhaohui Li Xin Li Jianping wu Liyuan Shang Fulong Xu yibo Xu Hongwen Xu Mingwei Zhu Guangzhou Institute of Pediatrics Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangdong Provincial Clinical Research Center for Child HealthGuangzhouGuangdong 510623China Department of Pediatric Orthopedics Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangdong Provincial Clinical Research Center for Child HealthGuangzhouGuangdong 510623China

Metatropicdysplasia(MD,MIM156530)is a rare congenital bone dysplasia primarily characterized by severe platyspondyly with long and wide vertebral bodies and dumbbell deformity of the tubular *** can be caused by heterozygous mutations in the gene encoding transient receptor potential vanilloid family member 4(TRPV4).We identifieda novel de novo mutation,c.2353T>C,in the TRPV4 gene,in a Chinese family with mild MD.

关键词： TRPV4 dysplasia congenital

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冠心病患者心电图QRS-T夹角及R/T比值与心功能及主要不良心脏事件的关系分析

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中国基层医药 2023年第3期30卷 416-421页

作者：吴益波饶志高宁波大学附属人民医院全科医学科宁波315100

目的通过观察冠心病(CHD)患者心电图QRS-T夹角及最大QRS环电压/最大T环电压(R/T)比值与心功能及主要心脏不良事件(MACE)的关系,探究评估CHD患者心功能并预测MACE发生情况的最佳方式。方法选取宁波大学附属人民医院2019年1月至2022年5月... 详细信息

目的通过观察冠心病(CHD)患者心电图QRS-T夹角及最大QRS环电压/最大T环电压(R/T)比值与心功能及主要心脏不良事件(MACE)的关系,探究评估CHD患者心功能并预测MACE发生情况的最佳方式。方法选取宁波大学附属人民医院2019年1月至2022年5月收治的CHD患者80例为研究对象。对其进行心功能评估,比较心电图QRS-T夹角及R/T比值,使用Spearman相关系数分析心电图QRS-T夹角、R/T比值与CHD患者心功能的关系。规范治疗1周,根据是否发生MACE,分为MACE组和无MACE组。采用单因素、多因素logistic回归分析明确心电图QRS-T夹角及R/T比值与CHD患者发生MACE的关联性。结果美国纽约心脏病学会(NYHA)心功能Ⅳ级患者QRS-T夹角[(115.75±6.83)°]、R/T(4.95±0.89)分别高于Ⅱ、Ⅲ级的患者,且Ⅲ级的患者高于Ⅱ级的患者(均P<0.05);经Spearman相关系数分析,心电图QRS-T夹角及R/T比值与NYHA心功能分级均呈正相关(均P<0.05);经单因素logistic回归分析结果显示,低左心室射血分数(LVEF)、高NYHA心功能分级及低密度脂蛋白(LDL)水平、QRS-T夹角和R/T比值大是影响CHD患者发生MACE的危险因素(均P<0.05)。结论心电图QRS-T夹角及R/T比值会随心功能的降低呈增大趋势,是CHD患者发生MACE的危险因子,可作为早期CHD诊治中观察患者实际病情的客观有效因子,为合理优化干预策略、提高治疗效果提供数据支持。

关键词：冠心病心电描记术心脏功能不良事件相关回归分析危险因素

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蜂窝车联网连通性研究综述与展望

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计算机科学 2023年第1期50卷 285-293页

作者：代亮吴益钵汪贵平长安大学电子与控制工程学院西安710064 长安大学车联网教育部-中国移动联合实验室西安710064

作为未来自动驾驶汽车的核心技术之一,蜂窝车联网(Cellular-V2X,C-V2X)在快速普及应用的同时,还面临着一系列与网络连通性相关的发展痛点,如车辆移动性、网络覆盖、频谱资源等问题。C-V2X车路协同连通性直接反映了C-V2X网络联网车辆的... 详细信息

作为未来自动驾驶汽车的核心技术之一,蜂窝车联网(Cellular-V2X,C-V2X)在快速普及应用的同时,还面临着一系列与网络连通性相关的发展痛点,如车辆移动性、网络覆盖、频谱资源等问题。C-V2X车路协同连通性直接反映了C-V2X网络联网车辆的整体性能,对于保证信息在C-V2X网络内实现远距离、自适应、低时延、高可靠传输具有重要意义。不同于传统的蜂窝移动通信网络,C-V2X联网车辆具有移动速度快、节点间链路持续时间短暂、无线通信环境可预测性强、移动模型受限于道路拓扑等特点,在高效利用频谱进行通信的同时,还具有自组织网络的无中心和自组织等诸多特性。首先简要介绍了C-V2X的优点与特点,包括C-V2X的进展与结构体系;然后介绍了C-V2X车联网中车路协同连通性的定义及相关发展约束,在此基础上对C-V2X网络连通性研究中基于交通场景、通信方式选择、路侧单元(Road Side Unit,RSU)位置部署、功率控制、模型驱动的研究方法进行了总结与分类;最后探讨了C-V2X的发展趋势,对其未来应用进行展望。

关键词：蜂窝车联网连通性通信方式功率控制模型驱动

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The expression and localization of a novel protein phosphatase inhibitor 2810408A11Rik in mouse testis and sperm

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The Journal of Biomedical Research 2012年第2期26卷 110-116页

作者： Ye Bi Mingxi Liu Wenjiao Tu yibo wu Xuejiang Guo Zuomin Zhou Jiahao Sha State Key Laboratory of Reproductive Medicine Department of Histology and EmbryologyNanjing Medical UniversityNanjingJiangsu 210029China

This study investigated the expression and distribution of 2810408A11Rik in mouse testis and sperm, and explored its role in sperrnatogenesis and sperm function. The expression levels of 2810408A11Rik mRNA in multiple tissue samples were analyzed using bioinformatic resources and RT-PCR technique. A specific rabbit polyclonal antibody was prepared by prokaryotic expression of 2810408A11Rik recombinant protein and utilized for animal immunization. Western blotting, immunohistochemistry and immunofluorescence were used to detect the expression and distribution of 2810408A11Rik. The results of the bioinformatic analysi and RT-PCR showed that 2810408A11Rik mRNA was specifically expressed in mouse testis, and 2810408AllRik protein included a protein phosphatase inhibitor domain. Western blotting assays, immunohistochemistry and immunofluorescence confirmed the expression of 2810408A11Rik protein in mouse testis, especially in post-meiosis round and long spermatids, and that it is localized in the acrosome and the post-nucleus area of sperm. Our findings suggest that 2810408A11Rik may play an important role in spermatogenesis, sperm capacitation and fertilization.

关键词： 2810408A11Rik testis specific protein phosphatase inhibitor capacitation

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疫情防控中的隐私困境及对策思考

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中国医学伦理学 2022年第8期35卷 843-848,869页

作者：吴玉洁贺苗吴一波哈尔滨医科大学人文社会科学学院黑龙江哈尔滨150081 西安思源学院医学院陕西西安710038 北京大学公共卫生学院北京100191

人工智能技术和大数据技术在疫情防控中的广泛应用,已发挥了关键性作用,并将持续深化使用。同时个人信息的数据化,在客观上使得个人隐私边界扩大、隐私归属复杂、多种形式的价值与权益失衡等伦理问题日渐加剧。因此,结合疫情防控需求和... 详细信息

人工智能技术和大数据技术在疫情防控中的广泛应用,已发挥了关键性作用,并将持续深化使用。同时个人信息的数据化,在客观上使得个人隐私边界扩大、隐私归属复杂、多种形式的价值与权益失衡等伦理问题日渐加剧。因此,结合疫情防控需求和伦理学原则,甄别、防范及解决这些隐私问题具有重要意义。从疫情防控中大数据技术的应用范围入手,阐述了疫情防控中隐私困境四个阶段的突出问题、三种典型利益冲突、分析了造成隐私问题的三种原因,明晰处理隐私问题的三条原则,进而综合思考并提出疫情防控中解决隐私伦理问题的对策,以期为缓解或解决疫情防控中的隐私问题提供参考。

关键词：疫情防控隐私困境伦理准则多元对策

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融媒体语境下科技新闻的创新报道实践分析——以中国军视网天舟六号直播为例

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新闻研究导刊 2023年第12期14卷 105-108页

作者：吴义博中国传媒大学北京100024

在视频、图文等多元化呈现的媒体融合时代,不同媒体的界限也越来越模糊,媒体制作更具有技术性,媒体之间相互融合、相互作用。融媒体背景给新闻工作者带来了新的挑战和机遇,媒体从业者也正积极适应新语境、发挥新技术和新媒体的优势,创... 详细信息

在视频、图文等多元化呈现的媒体融合时代,不同媒体的界限也越来越模糊,媒体制作更具有技术性,媒体之间相互融合、相互作用。融媒体背景给新闻工作者带来了新的挑战和机遇,媒体从业者也正积极适应新语境、发挥新技术和新媒体的优势,创新新闻报道实践。在此背景下,作为主流媒体推出的以航天新闻为核心的直播节目,中国军视网天舟六号直播从三个方面对节目进行了优化。一是在叙事空间方面设置了多个直播场景,丰富了节目的内容,增强了可看性;二是用先进技术赋能了节目内容的传播,大数据技术提高了新闻信息的传播效率、5G技术促进了移动直播画面的高质量传输、VR全景直播技术实现了观众的沉浸式体验;三是通过优化叙事策略提升了内容的感染力与传播效果,节目采用第一人称叙事视角拉近观众与记者的距离、运用多场景叙事手段增强观众的在场性体验、通过平民化叙事手法增强了节目的亲和力。文章从以上三个方面入手,对中国军视网天舟六号直播展开分析,探究科技新闻报道适应融媒体环境的发展策略,思考科技新闻节目提升受众体验和增强影响力的途径,如可丰富新闻报道场景、用新技术赋能新闻报道传播、优化新闻的叙事策略等。

关键词：融媒体语境科技新闻直播新闻天舟六号创新传播

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Analysis of the Effects of Preoperative Hepatic Artery Chemoembolization and Quality Nursing Intervention on the Perioperative Safety and Short-term Prognosis of Liver Transplantation in Patients with Hepatocellular Carcinoma

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Journal of Clinical and Nursing Research 2024年第4期8卷 375-380页

作者： Yang Wang Zixi Wang yibo Liu Aochen wu Baowang Liu Jinglin Cao Yanmin Shi The Third Hospital of Hebei Medical University Shijiazhuang 050051China

Objective: To investigate the effects of preoperative hepatic artery chemoembolization (TACE) and quality nursing interventions on the perioperative safety and short-term prognosis in patients with hepatocellular carcinoma undergoing liver transplantation. Methods: The study period spanned from January 2021 to December 2023, and 125 patients with hepatocellular carcinoma admitted to our hospital were selected, all of whom underwent liver transplantation. They were randomly divided into an observation group (n = 63) and a control group (n = 62). The patients in the control group did not undergo TACE before the operation, and the patients in the observation group underwent TACE and quality nursing intervention before the operation. The operation time, intraoperative blood loss, length of hospitalization, liver- free period, complication rate, short-term prognosis, and liver function indexes between the two groups were compared. Results: There was no significant difference in operation time, intraoperative blood loss, and length of hospitalization between the two groups (P 0.05). The rate of immune reactive complications in the observation group was lower than that of the control group (P 0.05). The two groups had no significant difference in postoperative liver function indexes (P > 0.05). Conclusion: Preoperative TACE and high-quality nursing intervention in patients with hepatocellular carcinoma had no adverse effect on the perioperative safety and short-term prognosis, prolonged the liver-free time, and reduced the incidence of immune-reactive

关键词： Hepatocellular carcinoma Liver transplantation Hepatic artery chemoembolization Quality nursing intervention

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3.5Mt/a重油催化裂化装置烟机效能核算与优化

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中外能源 2023年第2期28卷 84-89页

作者：吴乙博中国石油广西石化公司广西钦州535008

某催化裂化装置受市场影响,长期处于低负荷工况,烟机运行条件偏离设计值,实际回收功率较低,主风机组电机功率较高。现场三次实时采集烟机出入口压力、温度等数据,运用功率平衡法量化计算,核算偏离工况下烟机效率和实际回收功率。采用控... 详细信息

某催化裂化装置受市场影响,长期处于低负荷工况,烟机运行条件偏离设计值,实际回收功率较低,主风机组电机功率较高。现场三次实时采集烟机出入口压力、温度等数据,运用功率平衡法量化计算,核算偏离工况下烟机效率和实际回收功率。采用控制变量法对烟气流量、烟机入口压力和烟机出口压力等影响因素进行分析,并提出降低再生器压力,减少烟机入口阀门压降,提高烟机入口压力进而提高烟机实际回收功率,降低电机功率的优化调整措施。经优化,两器差压不变,再生器压力下降12kPa,烟机入口阀开度增大4.9%,阀门压降降低20kPa,烟机入口压力提高8kPa,烟机效率提升1.75%,主风机组电机耗电量下降1050kW·h,年节约电费529万元。反再系统再生器烧焦无影响,干气、柴油、油浆和焦炭收率下降,汽油和液化气收率上升,产品分布有正向作用,并提高了蒸汽能级使用。

关键词：烟机效率催化裂化装置能量回收烟机实际回收功率

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