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Can simple songs express useful signals for mate choice?

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Chinese Birds 2016年第2期7卷 110-115页

作者： nan lyu Jinlin Li Yue-Hua Sun Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of Sciences

Background:As one of the most elaborate and diverse sexual signals,bird songs are prominent among mate choice *** generally prefer mates with larger repertoire size,which promotes the evolution of song complex?***,there are also some songbirds that have far simpler and less diverse vocalizations,which have not been the focus of scientific *** Phylloscopus warblers are accomplished singers with complex *** contrast,Hume's Warbler(***) has extremely simple *** order to explore the song's function,its evolutionary sig?nificance and particularly to assess its possible relationship with parental investment,we studied mate choice of the subspecies *** in Lianhuashan National Nature Reserve,Gansu,***:We recorded body measurements and songs of breeding males and then explored their relationships with the date of clutch initiation,reasoning that the characteristics of males that are involved with early nesting activities reflect female mate *** also recorded egg size and body measurements of nestlings to assess the rela?tionship between parental investment and mate ***:We found that male wing and tail lengths were positively correlated with early clutch initiation as were songs characterized by short duration and rapid rise to maximum *** also found that early?breeding females did not lay large eggs,but produced more surviving young,which grew up ***:Female mate choice criteria in this bird include both visual signals and song *** study supports the hypothesis that females may judge male quality from quite subtle *** order to reduce the risk of predation,a preference for such inconspicuous male characteristics may be partially driven by high vulnerability of this warbler to predators as a ground?nesting species.

关键词： Bird song Sexual selection Mate choice Parental investment Hume's Warbler

The breeding biology of endemic Spectacled Parrotbill(Sinosuthora conspicillatus) in Lianhuashan National Nature Reserve, Gansu Province, China

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Avian Research 2018年第1期9卷 43-48页

作者： Lijun Chen Lei Zhu Yunbiao Hu Pengfei Liu nan lyu Yuehua Sun Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology Chinese Academy of Sciences Beijing 100101 China State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology Chinese Academy of Sciences Beijing 100101 China Chengdu Bird Watching Society Chengdu 610041 China

Background: Life history traits play critical roles in population survival and *** information should be particularly detailed in order to provide significant insights into the population status and the evolution of other *** our knowledge, there is still no information about the breeding biology of Spectacled Parrotbill(Sinosuthora conspicillatus), an endemic parrotbill in ***: We searched the nests, checked all nests found and recorded the information of eggs, nestlings and nest sites of the Spectacled Parrotbill from 2013 to 2015 at Lianhuashan National Nature Reserve in Gansu Province, ***: A total of 16 nests were *** trees were artificial young spruces and *** nest height was 0.89 ± 0.47 m(n = 16) above the ground *** nests were cup-shaped and constructed using leaves, fine strips of barks and grasses by both *** mean clutch size was 4.42 ± 0.79(n = 12).The eggs were oval in pale blue without speckles, and the mean egg mass was 1.25 ± 0.07 g(n = 27).The egg length was 15.56 ± 0.46 mm(n = 27) and the width was 12.46 ± 0.29 mm(n = 27).Incubation period was 13 days and nestling period was 13–14 *** breeding success rate was 46%, and among those failed nest, 71% were depredated and 29% were ***: Detailed life history information about parrotbill is still *** breeding biology of Spectacled Parrotbill reported in the present study should be helpful for further research about population, breeding behavior and conservation of this bird.

关键词： Reproduction Paradoxornithidae Nest description Brood size Egg size Nest survival

Organ transplantation management in the midst of the COVID-19 outbreak: a synopsis

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Hepatobiliary Surgery and Nutrition 2020年第2期9卷 250-252页

作者： Bo-Han Zhang lyu-nan Yan Jia-Yin Yang Department of Liver Surgery and Liver Transplantation Center Organ Transplantation CenterWest China Hospital of Sichuan UniversityChengdu 610041China

On December 8,2019,the first case of unexplained pneumonia was reported in China,in Wuhan,Hubei Province(1).By March 6,2020,over 100,000 confirmed cases of coronavirus disease 2019(COVID-19),and more than 3,400 deaths have been reported worldwide(data from National Health Commission of the People’s Republic of China,Official Channels of Hong Kong,Macao and Taiwan,and World Health Organization).COVID-19,which is caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),is bound to have widespread ramifications on the clinical management system,organ transplantation being a prime *** on the transplant waitlist are generally in poor ***,post-transplant patients with weak immunity stemming from the long-term and regular administration of immunosuppressants are more likely to contract the SARS-CoV-2 infection than are healthy ***,when considering transplant patient safety,balancing organ allocation principles with epidemic prevention and control is a dilemma for transplant teams.

关键词： prevention Taiwan likely

Pending role of METTL14 in liver cancer

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Hepatobiliary Surgery and Nutrition 2019年第6期8卷 669-670,中插1页

作者： Bo-Han Zhang lyu-nan Yan Jia-Yin Yang Department of Liver Surgery Liver Transplantation CenterWest China Hospital of Sichuan UniversityChengdu 610041China

We read with great interest the article by Ma et al.(1),which investigated the role of N6-methyladenosine(m6A)modification in hepatocellular carcinoma(HCC)and the mechanism of methyltransferase-like 14(METTL14)involved in the progression of liver *** authors found a decreased m6A level in HCC compared with peritumor and normal *** discovered that depleted METTL14 regulated the recognition and binding of DGCR8 and pri-miR-126 via m6A modification,suppressing the miR-126 expression and causing HCC *** contrast,Chen et al.(2)reported a significant increase of m6A level in HCC(data not shown).It was confirmed that METTL14 was not significantly decreased in *** also demonstrated the promoting effect of METTL14 in liver cancer cell proliferation and migration.

关键词： al. cancer liver

An insect sclerotization-inspired antifouling armor on biomedical devices combats thrombosis and embedding

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Bioactive Materials 2024年第3期33卷 562-571页

作者： nan lyu Daihua Deng Yuting Xiang Zeyu Du Xiaohui Mou Qing Ma nan Huang Jing Lu Xin Li Zhilu Yang Wentai Zhang Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine Department of CardiologyThe Tenth Affiliated HospitalSouthern Medical UniversityDongguanGuangdong523059China GuangZhou nanchuang Mount Everest Company for Medical Science and Technology GuangzhouGuangdong510670China Department of Anesthesiology Sichuan Academy of Medical Sciences&Sichuan Provincial People’s HospitalSchool of MedicineUniversity of Electronic Science and Technology of Chin1ChengduSichuan610072China Department of Cardiology Third People’s Hospital of Chengdu Affiliated to Southwest Jiaotong UniversityChengduSichuan610072China Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation Southern Medical UniversityGuangzhouGuangdong510080China

Thrombus formation and tissue embedding significantly impair the clinical efficacy and retrievability of temporary interventional medical ***,we report an insect sclerotization-inspired antifouling armor for tailoring temporary interventional devices with durable resistance to protein adsorption and the following protein-mediated *** mimicking the phenol-polyamine chemistry assisted by phenol oxidases during sclerotization,we develop a facile one-step method to crosslink bovine serum albumin(BSA)with oxidized hydrocaffeic acid(HCA),resulting in a stable and universal BSA@HCA ***,the surface of the BSA@HCA armor,enriched with carboxyl groups,supports the secondary grafting of polyethylene glycol(PEG),further enhancing both its antifouling performance and *** synergy of robustly immobilized BSA and covalently grafted PEG provide potent resistance to the adhesion of proteins,platelets,and vascular cells in *** ex vivo blood circulation experiment,the armored surface reduces thrombus formation by 95%.Moreover,the antifouling armor retained over 60%of its fouling resistance after 28 days of immersion in ***,our armor engineering strategy presents a promising solution for enhancing the antifouling properties and clinical performance of temporary interventional medical devices.

关键词： Antifouling Temporary interventional devices Insect sclerotization Phenol-polyamine chemistry Universal armor

Quantitative analysis of retinal intermediate and deep capillary plexus in patients with retinal deep vascular complex ischemia

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International Journal of Ophthalmology(English edition) 2021年第7期14卷 1025-1033页

作者： Xin-Xin Li Tian-Wei Qian Ya-nan lyu Xun Xu Su-Qin Yu Department of Ophthalmology Shanghai General HospitalShanghai Jiao Tong UniversityShanghai 200080China National Clinical Research Center for Eye Diseases Shanghai Key Laboratory of Ocular Fundus DiseaseShanghai 200080China Shanghai Engineering Center for Visual Science and Photomedicine Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye DiseasesShanghai 200080China

AIM: To quantitatively analyze the retinal intermediate and deep capillary plexus(ICP and DCP) in patients with retinal deep vascular complex ischemia(RDVCI), using 3D projection artifacts removal(3D PAR) optical coherence tomography angiography(OCTA).METHODS: RDVCI patients and gender-and agematched healthy controls were assessed and underwent OCTA examinations. The parafoveal vessel density(PFVD) of retinal deep vascular complex(DVC), ICP, and DCP were analyzed, and the percentage of reduction(PR) of PFVD was ***: Twenty-four eyes in 22 RDVCI patients(20 in acute phase and 4 in chronic phase) and 24 eyes of 22 healthy subjects were enrolled as the control group. Significant reduction of PFVD in DVC, ICP, and DCP was observed in comparison with the controls(DVC: acute: 43.59%±6.58% vs 49.92%±5.49%, PR=12.69%;chronic: 43.50%±3.33% vs 51.20%±3.80%, PR=15.04%. ICP: acute: 40.28%±7.91% vs 46.97%±7.14%, PR=14.23%;chronic: 41.48%±2.87% vs 46.43%±3.29%, PR=10.66%. DCP: acute: 45.44%±8.27% vs 51.51%±9.97%, PR=11.79%;chronic: 37.78%±3.48% vs 51.73%±5.17%, PR=26.97%;all P<0.05). No significant PR difference was found among DVC, ICP, and DCP of RDVCI in acute phase(P=0.812), but significant difference in chronic phase(P=0.006, DVC vs DCP, ICP vs DCP). No significant difference in PR between acute and chronic phases in the DVC(P=0.735) or ICP(P=0.681) was found, but significant difference in the DCP(P=0.041).CONCLUSION: The PFVD of DVC, ICP, and DCP in RDVCI is significantly decreased in both acute and chronic phases. ICP impairment is stabilized from acute to chronic phase in RDVCI, whereas subsequent DCP impairment is uncovered and can be explained by ischemia-reperfusion damage.

关键词： intermediate and deep capillary plexus 3D projection artifacts removal optical coherence tomography angiography retinal deep vascular complex ischemia

Utilization of hepatitis B virus-positive allografts in liver transplantation:a new arrow to the bowstring for expanding the donor pool?

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Hepatobiliary Surgery and Nutrition 2022年第2期11卷 283-287页

作者： Gang Xu Chen-Hao Jiang Yao Xiao Tao lyu Li Jiang lyu-nan Yan Jia-Yin Yang Department of Liver Surgery and Liver Transplant Center Organ Transplant CenterWest China Hospital of Sichuan UniversityChengduChina Division of Transplant Surgery Department of Surgery and Transplant Surgery Research LaboratoryBrigham and Women’s HospitalHarvard Medical SchoolBostonMAUSA

Liver disease accounts for approximately 2 million deaths per year worldwide,including 1 million due to complications of cirrhosis and 1 million due to viral hepatitis and hepatocellular carcinoma(HCC)(1).Liver transplantation(LTx)is the definitive management for end-stage liver disease and HCC in both children and ***,the number of liver transplant candidates on the waiting list exceeds that of available *** one-third of the global population has serological evidence of past or current hepatitis B virus(HBV)infection,including 250 million people with chronic HBV *** concept of using HBV-positive liver allografts has been implemented to expand the organ pool worldwide(2).Especially in regions with high or intermediate prevalence of HBV infection,these allografts can be an optimal choice for LTx *** the decades,LTx from HBV-exposed allografts has shifted from the first case in the 1980s to expanded practice supported by positive outcomes,particularly with the availability of safe and effective clinical therapies(3).

关键词： allograft string donor

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基于“酚-胺”化学构建抗污表面的研究

材料导报 2023年第17期37卷 257-262页

作者：谢鑫吕楠涂秋芬西南交通大学材料科学与工程学院成都610031

生物污染是医用器械植、介入后的常见问题,尤其是血液接触类器械,如体外循环导管等。生物污染除了影响器械功能发挥外,还可能危及患者生命安全。在器械表面构建抗污涂层是解决此类问题行之有效的策略之一。本工作的灵感来源于“酚-胺”... 详细信息

生物污染是医用器械植、介入后的常见问题,尤其是血液接触类器械,如体外循环导管等。生物污染除了影响器械功能发挥外,还可能危及患者生命安全。在器械表面构建抗污涂层是解决此类问题行之有效的策略之一。本工作的灵感来源于“酚-胺”化学,利用ε-聚赖氨酸(ε-PL)、氢化咖啡酸(HCA)、高碘酸钠(NaIO4)一步浸涂法,快速、高效地构建了ε-PL/HCA“酚-胺”涂层,利用涂层表面丰富的氨基官能团接枝透明质酸(HA),得到具有良好生物除污功能的HA@ε-PL/HCA涂层。傅里叶红外光谱(FTIR)、X射线光电子能谱(XPS)、水接触角的结果证明成功制备了HA@ε-PL/HCA涂层;三种细胞的粘附实验证明HA@ε-PL/HCA涂层具有优异的抗细胞粘附能力;体外血小板粘附与半体内血液循环试验表明HA@ε-PL/HCA涂层具有良好的抗凝血能力。综上,基于“酚-胺”化学构建的HA@ε-PL/HCA涂层可赋予材料良好的抗凝血、抑制细胞粘附的功能,在体外循环导管等器械的表面改性方面具有潜在的应用价值。

关键词： “酚-胺”化学 ε-聚赖氨酸氢化咖啡酸透明质酸抗污抗凝

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基于贝叶斯概率理论的物流园区选址优化研究

中国公路学报 2020年第9期33卷 251-260页

作者：吕楠赵敬源长安大学建筑学院陕西西安710061 西北大学城市与环境学院陕西西安710127

物流园区选址是其规划建设中不可或缺的部分,传统的选址方法以定性分析为主,缺乏对选址结果可靠性的评判标准,为此,引入贝叶斯概率方法开展了物流园区选址规划理论研究。借助EM算法和GeNie软件,构建了贝叶斯网络模型,挖掘出各影响因素... 详细信息

物流园区选址是其规划建设中不可或缺的部分,传统的选址方法以定性分析为主,缺乏对选址结果可靠性的评判标准,为此,引入贝叶斯概率方法开展了物流园区选址规划理论研究。借助EM算法和GeNie软件,构建了贝叶斯网络模型,挖掘出各影响因素间存在的内在因果和逻辑关系,量化各影响因素的显著性,构建科学合理的物流园区选址规划评价指标体系;采用K-means聚类方法建立了物流园区选址模型,使用MATLAB软件对建立的模型进行迭代计算,并引入贝叶斯判别方法对聚类结果进行了可靠性分析;基于贝叶斯网络方法优化了灰色模糊风险评估模型,结合了定性分析和定量计算,得出相应的选址风险系数与评估风险概率,完成了物流园区的选址风险等级评估。研究结果表明:基于贝叶斯方法建立的物流园区选址模型能够充分考虑城市规模、经济社会发展、城市物流量及交通区位等多因素的影响,实现了对物流园区选址结果的量化评价,降低了人为主观因素和客观数据的模糊性对物流园区选址方案的影响,有效提高了物流园区选址规划的科学性和可靠性。以陕西省10个地级市为候选地点验证该选址模型的可行性,结果显示:西安建设物流园区的选址风险系数为4.030 1,处于低风险水平,依据总体风险概率确定低风险水平的可靠性为65.50%,证实了在西安建设物流园区(西安港)风险系数较低,科学可行,且西安港风险评估结论具有较高的可靠性。

关键词：交通工程物流园区贝叶斯方法选址模型评价指标风险评估