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Body Size but Not Food Size Determined Head Sexual Dimorphism in Rana kukunoris from the Tibetan Plateau

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Asian Herpetological Research 2023年第2期14卷 175-181页

作者： Hongzhou CHEN Haifen QIN Zhenkun ZHAO jiahong liao Yanfang WU Xueyan LIU Lichun JIANG Buddhi DAYANANDA Wei CHEN School of Resources and Environmental Engineering Anhui UniversityHefei 230601AnhuiChina Key Laboratory for Molecular Biology and Biopharmaceutics School of Life Science and TechnologyMianyang Normal UniversityMianyang 621000SichuanChina School of Agriculture and Food Sciences The University of QueenslandBrisbane QLD 4072Australia

Sexual dimorphism between males and females is a common pattern observed in the natural world and has become one of the main focuses of evolutionary *** head size and shape are important factors that may influence food acquisition,but knowledge about the sexual differences between amphibian head size and shape is relatively ***,intersexual differences in the head size and shape of Rana kukunoris,which is a high-elevation frog from the Qinghai-Tibet Plateau,were *** differences were found in the head shape but not the head size between sexes.A significant correlation was also observed between prey size and head ***,these correlations disappeared when individual body size was controlled,suggesting that body size but not food size was the main factor resulting in intersexual differences in head size/*** results suggested that food competition between sexes did not result in sexual dimorphism of head shape among these frogs.

关键词： amphibians head shape morphometrics Rana Rana kukunoris sexual dimorphism

No Male Preference for Large Females in the Asian Common Toad(Duttaphrynus melanostictus):Effect of the Sex Ratio and Breeding System

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Asian Herpetological Research 2020年第4期11卷 328-334页

作者： Lixia ZHANG Xiangyu YUAN Yongsun SHENG Xueting ZHONG jiahong liao Zhenhao LIU Wei CHEN Department of Ecology College of Life SciencesHenan Normal UniversityXinxiang 453007HenanChina Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province College of Life SciencesHuzhou UniversityHuzhou 313000ZhejiangChina Ecological Security and Protection Key Laboratory of Sichuan Province Mianyang Normal UniversityMianyang 621000SichuanChina

Mating preferences are common in natural populations of *** studies have shown that male mate choice can occur in a wide range of ***,male mating preferences are still poorly understood in *** selection theory predicts that male mate choice is not expected to arise if 1) adult population exhibited a highly male-biased sex ratio which will diminish male mating success;2) males provide less parental care;3) mating success of males is associated with chorus tenure in which males would maximize their fitness by mating with multiple *** tested these predictions in the Asian common toad Duttaphrynus melanostictus from southeastern Tibet,*** field experimental results indicated that,the breeding population exhibited a highly male-biased sex ratio,called males did not defend sites which contain significant resources required by females and offspring,both sexes provided no parental care after egg-laying,and the toad species was characterized with prolonged breeding season chorus *** male mate choice experiment,males did not show preferences for a larger gravid female over a smaller gravid *** suggest that male mating success in the Asian common toad is likely determined by the number but not the quality of *** research should focus on how sexual selection on male acoustic signaling and how female preference exert different types of selection pressure on male call traits in this Tibet toad.

关键词： Asian common toad chorus attendance Duttaphrynus melanostictus male mating preference parental care sex ratio

Engineering the axial coordination of cobalt single atom catalysts for efficient photocatalytic hydrogen evolution

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Nano Research 2024年第6期17卷 5114-5121页

作者： Ning Kang Lingwen liao Xue Zhang Zhen He Binlu Yu jiahong Wang Yongquan Qu Paul KChu Seeram Ramakrishna Xue-Feng Yu Xin Wang Licheng Bai Materials Interfaces Center Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences(CAS)Shenzhen 518055China Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsChinese Academy of SciencesHefei 230031China Department of Chemistry City University of Hong KongKowloonHong Kong 999077China Hong Kong Branch of National Precious Metals Material Engineering Research Center(NPMM) City University of Hong KongKowloonHong Kong 999077China Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Physics and Department of Materials Science and Engineering City University of Hong KongKowloonHong Kong 999077China National University of Singapore(NUS)Centre for Nanofibers and Nanotechnology Department of Mechanical EngineeringNational University of SingaporeSingapore 117542Singapore

Improving the catalytic activity of non-noble metal single atom catalysts(SACs)has attracted considerable attention in materials *** optimizing the local electronic structure of single atom can greatly improve their catalytic activity,it often involves in-plane modulation and requires high ***,we report a novel strategy to manipulate the local electronic structure of SACs via the modulation of axial Co-S bond anchored onto graphitic carbon nitride(C_(3)N_(4))at room temperature(RT).Each Co atom is bonded to four N atoms and one S atom(Co-(N,S)/C_(3)N_(4)).Owing to the greater electronegativity of S in the Co-S bond,the local electronic structure of the Co atoms is available to be controlled at a relatively moderate ***,when employed for the photocatalytic hydrogen evolution reaction,the adsorption energy of intermediate hydrogen(H*)on the Co atoms is remarkably *** the presence of the Co-(N,S)/C_(3)N_(4)SACs,the hydrogen evolution rates reach up to 10 mmol/(g·h),which is nearly 10 and 2.5 times greater than the rates in the presence of previously reported transition metal/C_(3)N_(4)and noble platinum nanoparticles(PtNPs)/C_(3)N_(4)catalysts,*** to the tailorable axial Co-S bond in the SAC,the local electronic structure of the Co atoms can be further optimized for other photocatalytic *** axial coordination engineering strategy is universal in catalyst designing and can be used for a variety of photocatalytic applications.

关键词： transition metal single-atom local electronic structure photocatalytic hydrogen evolution graphitic carbon nitride axial coordination environment

Broadband tunable instantaneous frequency measurement system based on stimulated Brillouin scattering

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Optoelectronics Letters 2023年第3期19卷 174-178页

作者： liao Weijie ZHANG jiahong CAI Qibin Faculty of Information Engineering and Automation Kunming University of Science and TechnologyKunming 650500China

A broadband tunable instantaneous frequency measurement(IFM)system is designed based on the stimulated Brillouin scattering effect of the highly nonlinear fiber in which the carrier suppressed single sideband modulated signal of the Brillouin frequency shift acts as pump *** amplitude comparison function(ACF)is constructed by the power radio of the two paths in the *** frequency measurement range and measurement accuracy can be tuned by changing the frequency difference of the two phase modulation *** tunable frequency measurement ranges of 2—5 GHz,2—10 GHz,2—15 GHz,2—20 GHz,and 2—24 GHz are realized,and the corresponding measurement accuracies are 3.64 d B/GHz,2.17 d B/GHz,1.87 d B/GHz,1.22 d B/GHz,and 0.77 d B/GHz,respectively.

关键词： tunable scattering pump

基于CT检查的集成深度学习模型对肝门静脉定性与定量分型研究

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中华消化外科杂志 2024年第7期23卷 976-983页

作者：徐卓凡靳琪奥王开宇张新静张刘彤张然然廖洪恩项灿宏董家鸿清华大学附属北京清华长庚医院肝胆胰外科北京102218 清华大学医学院北京100084

目的基于CT检查的集成深度学习模型对肝门静脉定性与定量分型研究。方法采用回顾性研究方法。收集2017年10月至2019年1月清华大学附属北京清华长庚医院收集291例行上腹部增强CT检查患者的影像学数据;男195例,女96例;年龄为(51±12)岁。... 详细信息

目的基于CT检查的集成深度学习模型对肝门静脉定性与定量分型研究。方法采用回顾性研究方法。收集2017年10月至2019年1月清华大学附属北京清华长庚医院收集291例行上腹部增强CT检查患者的影像学数据;男195例,女96例;年龄为(51±12)岁。采用三维重建系统对增强CT检查肝门静脉系统进行重建,并将三维点云输入至编码器模型后,得到三维重建的向量化表示。该向量化表示可以用于预测定性分型和定量表示分型。正态分布的计量资料以x±s表示,组间比较采用配对t检验。计数资料以百分数或绝对数表示,组间比较采用配对X^(2)检验。结果(1)门静脉三维重建结果及解剖分型。291例患者重建肝门静脉的三维结构,肝门静脉主干分型:Akgul A型211例,Akgul B型29例,Akgul C型16例,Akgul D型10例,无Akgul E型患者,无法分型25例。(2)门静脉主干定性分型的预测。291例患者样本中,排除25例因成像质量差或无法进行Akgul分型的样本,266例样本用于机器模型肝门静脉主干的自动定性分型(肝门静脉分类器),其中Akgul A型211例,Akgul B型29例,Akgul C&D型26例。266例患者Macro‑F1为61.93%±40.50%,准确率为84.99%,Random分类器的Macro‑F1为32.38%±19.81%,准确率为61.65%,两者上述指标比较,差异均有统计学意义(t=7.85,X^(2)=62.89,P<0.05)。(3)定量表示门静脉分型。定量分型相似样本的Akgul定性分型的概率P@1为73%±45%、P@3为70%±37%、P@5为69%±35%、P@10为67%±32%、MRR为80%±34%;基线模型P@1为57%±50%、P@3为58%±35%、P@5为58%±32%、P@10为58%±30%、MRR为70%±37%;两种模型上述指标比较,差异均有统计学意义(t=5.22,5.11,5.00,4.99,3.47,P<0.05)。结论基于CT检查使用三维重建和深度学习技术建立肝门静脉结构的自动分型模型,可实现自动定性分型并定量描述肝门静脉结构。

关键词：三维重建深度学习肝门静脉分型相似患者检索 CT检查

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文学地理学视域下清诗辽宫文学景观探究

宁夏师范学院学报 2024年第3期45卷 30-36页

作者：吴昌林徐嘉鸿华东交通大学人文社会科学学院江西南昌330013

清代怀古诗中不乏辽宫文学景观的出现。众多清代文人描绘宫阙、妆台、鹰坊等文学景观,重现契丹统治时期的政治风貌和文化风采,寻求文史素材和现实理念的和谐共鸣,将文学意象糅合创作理念,打造人文空间和心灵空间。基于文学景观的创作,... 详细信息

清代怀古诗中不乏辽宫文学景观的出现。众多清代文人描绘宫阙、妆台、鹰坊等文学景观,重现契丹统治时期的政治风貌和文化风采,寻求文史素材和现实理念的和谐共鸣,将文学意象糅合创作理念,打造人文空间和心灵空间。基于文学景观的创作,探究三大空间的创作内涵和审美意蕴,发掘辽宫文学景观中蕴含的独特的华夷同志的政治理想和游目怀古的文学价值,展现中华文人在历史长河中承前启后、历久弥新的审美能力和哲理思考。

关键词：清代怀古诗辽宫文学景观文学地理学

能谱CT结石成分分析在泌尿系结石体外冲击波碎石中的应用

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中外医学研究 2024年第15期22卷 113-117页

作者：杨丽芬陈佳鸿黄春榆朱文丰廖锦先惠州市中心人民医院广东惠州516001

目的:探讨能谱CT结石成分分析在泌尿系结石体外冲击波碎石(ESWL)中的应用效果。方法:选取2022年5月—2023年8月惠州市中心人民医院门诊治疗的160例泌尿系结石患者,按照随机数表法将其分为两组,各80例。两组均接受ESWL治疗,在此之前,对... 详细信息

目的:探讨能谱CT结石成分分析在泌尿系结石体外冲击波碎石(ESWL)中的应用效果。方法:选取2022年5月—2023年8月惠州市中心人民医院门诊治疗的160例泌尿系结石患者,按照随机数表法将其分为两组,各80例。两组均接受ESWL治疗,在此之前,对照组采用常规CT平扫进行结石密度计算,试验组采用能谱CT进行结石成分评估。比较两组手术相关情况、结石清除率及并发症发生率。结果:试验组一次碎石成功率高于对照组,平均体外冲击波次数、最高工作电压平均值低于对照组,平均碎石时间短于对照组,差异有统计学意义(P24 h肉眼血尿发生率均低于对照组,差异有统计学意义(P0.05)。结论:在泌尿系结石ESWL中应用能谱CT结石成分分析能为手术创造有利条件,确保一次碎石成功,提高术后结石清除率,并减少平均体外冲击波次数,缩短手术时间,降低>24 h肉眼血尿发生率。

关键词：能谱CT 泌尿系结石体外冲击波碎石结石清除率效果

庆大霉素对小鼠螺旋神经节神经元电生理特性的影响

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听力学及言语疾病杂志 2004年第5期12卷 333-336页

作者：邓嘉虹梁传余廖大清云南省第一人民医院耳鼻咽喉科昆明650032 四川大学华西医院耳鼻咽喉科四川大学华西医院麻醉与重症监护实验室

目的　探讨庆大霉素对小鼠耳蜗螺旋神经节神经元细胞电生理特性的影响及其意义。方法　应用全细胞电压钳技术研究庆大霉素对急性酶分离小鼠螺旋神经节神经元细胞膜上的钾、钠离子通道电流的峰值的影响 ,与细胞外液中庆大霉素浓度的关系 ... 详细信息

目的　探讨庆大霉素对小鼠耳蜗螺旋神经节神经元细胞电生理特性的影响及其意义。方法　应用全细胞电压钳技术研究庆大霉素对急性酶分离小鼠螺旋神经节神经元细胞膜上的钾、钠离子通道电流的峰值的影响 ,与细胞外液中庆大霉素浓度的关系 ,以及庆大霉素洗脱后电流的恢复情况。结果　庆大霉素能抑制电压依赖性钾通道 ,但不能抑制电压依赖性钠通道 ,其钾通道抑制作用与细胞外液中庆大霉素的浓度呈剂量依赖性 ,庆大霉素洗脱后电流恢复不完全。

关键词：膜片钳技术螺旋神经节神经元庆大霉素

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当前小学数学作业设计中的若干问题及对策

新课程学习(中) 2014年第9期 134-134页

作者：廖加洪福建省泉州市惠安县涂寨中心小学

小学数学作业的设计效果对于数学学科教学质量有着直接的影响,同时对学生逻辑思维的形成以及自主学习能力、数学应用能力的提高有着极其重要的作用。教师要针对学生的差异,科学设计数学作业,发挥其应有的作用。

关键词：小学数学作业设计问题有效方法