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Predator-prey encounters:deciphering the robbery relationship between highwayman flies and their ant victims

Integrative Zoology 2024年第2期19卷 253-261页

作者： Ying ZHAO Yulong YU Zhi CHEN Ying LI Huidan TENG Guillaume CHOMICKI chuntian zhang Gao CHEN Yunnan Key Laboratory for Integrative Conservation of Plant Species with Extremely Small Populations KunmingChina CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunmingChina College of Life Science Shenyang Normal UniversityShenyangChina School of Ecology and Environmental Science Yunnan UniversityKunmingChina University of Chinese Academy of Sciences BeijingChina Ecology and Evolutionary Biology School of BiosciencesAlfred Denny BuildingUniversity of SheffieldWestern BankSheffieldUK

Examples of predator–prey interactions in which flies rob ants are *** date,this behavior has only been recorded in the genus Bengalia Robineau-Desvoidy(Bengaliinae,Diptera,Calliphoridae).These predatory flies ambush ants,and rob them of the food or offspring that they are ***,because of the rarity of this behavior,the reasons and consequences(evolutionary advantages)are unknown,and indeed,the behavior has been sometimes considered *** this study,we employed field investigations and behavioral analyses to investigate whether the sex of the fly Bengalia varicolor,or the weight and quality of the food carried by Pheidole nodus ants influenced fly–ant interactions in their natural *** show that food weight and quality influenced the behavior of *** independent of the fly’s *** behavior by the flies was more successful when the food robbed was of high-quality and light in ***,the weight of the food robbed modulated the escape distance the flies could carry *** then may affect the food quality and weight transported by the *** is a novel example of deciphering the relationship between highwayman flies and their ant *** the widespread distribution of Bengalia flies,we suggest that such interspecific predator–prey encounters may shape the robbery interactions and the carrying behavior of further ant species in nature.

关键词： Bengalia kleptoparasitism Pheidole predatory flies robbing

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Two new species of Eryciini(Diptera:Tachinidae)from the Eastern edge of the Qinghai-Tibetan Plateau,China

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Zoological Systematics 2023年第2期48卷 184-190页

作者： Shidie Liu chuntian zhang Xinqiang Xi Liaoning Key Laboratory of Evolution and Biodiversity College of Life ScienceShenyang Normal UniversityShenyang 110034China Department of Ecology College of Life ScienceNanjing UniversityNanjing 210046China

Two new species of the tribe Eryciini of subfamily(Diptera:Tachinidae:Exoristinae)from the eastern part of Qinghai-Tibetan Plateau,China are recognized,described and illustrated:Drino latifrons *** NE Sichuan and Lydella gannanensis *** ***,*** the type specimens studied are deposited in Insect Collection,Shenyang Normal University.

关键词： Exoristinae Gansu Sichuan Drino Lydella taxonomy

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A multiple copyright identification watermarking algorithm based on code division multiple access

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High Technology Letters 2008年第4期14卷 377-383页

作者：张帆 li Jie Su Yuting zhang chuntian College of-Computer ＆ Information Engineering Henan University Kaifeng 475001 P. R. China College of Electronic ＆ Information Engineering Tianjin University Tianjin 300072 P.R. China

A multiple watermarking algorithm is presented according to the multiple accessing technique of the code division multiple access （CDMA） system. Multiple watermarks are embedded into digital images in the wavelet transform domain. Each of the watermarks is embedded and extracted independently without impacts to each other. Multiple watermarks are convolution encoded and block interleaved, and the orthogonal Gold sequences are used to spread spectrum of the copyright messages. CDMA encoded water-mark messages are embedded into the wavelet sub-bands excluding the wavelet HH1 sub-bands. The embedment amplitude is decided by Watson＇ s perceptual model of wavelet transform domain, and the embedmeut position in the selected wavelet sub-bands is decided randomly by a pseudo-random noise （PN） sequence. As a blind watermm＇king algorithm, watermarks are extracted without original image. The watermarking capacity of proposed algorithm is also discussed. When two watermarks are embedded in an image at the same time, the capacity is larger than the capacity when a single watermark is embedded, and is smaller than the sum of the capacity of two separately embedded watermarks. Experimental results show that the proposed algorithm improves the detection bits error rate （BER） observably, and the multiple watermarks have a preferable robustness and invisibility.

关键词： code division multiple access (CDMA) watermarking convolutional coding

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Two new species of Tachinidae(Diptera) from China

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Zoological Systematics 2018年第2期43卷 221-226页

作者： Houcan Liang Yansen zhang chuntian zhang College of Life Science Shenyang Normal University

Two new species from Liaoning, China, Phyllomya nigripalpis Liang ＆ zhang, sp. nov. and Smidtia longicercus Liang ＆ zhang, sp. nov., are described as new to science, with photos of external morphological characters and terminalia of male. The type specimens are deposited in the Insect Collection of Shenyang Normal University（SYNU）.

关键词： Tachinids Phyllomya Smidtia taxonomy China

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Improvement of Matching Criterion for Motion Estimation in H.263

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通信学报 1998年第5期19卷 34-38页

作者： Qiu Junhai zhang chuntian (Tianjin University, Tianjin 300072) 天津大学天津

ＩｍｐｒｏｖｅｍｅｎｔｏｆＭａｔｃｈｉｎｇＣｒｉｔｅｒｉｏｎｆｏｒＭｏｔｉｏｎＥｓｔｉｍａｔｉｏｎｉｎＨ．２６３ＱｉｕＪｕｎｈａｉＺｈａｎｇＣｈｕｎｔｉａｎ（ＴｉａｎｊｉｎＵｎｉｖｅｒｓｉｔｙ，Ｔｉａｎｊｉｎ３００... 详细信息

ＩｍｐｒｏｖｅｍｅｎｔｏｆＭａｔｃｈｉｎｇＣｒｉｔｅｒｉｏｎｆｏｒＭｏｔｉｏｎＥｓｔｉｍａｔｉｏｎｉｎＨ．２６３ＱｉｕＪｕｎｈａｉＺｈａｎｇＣｈｕｎｔｉａｎ（ＴｉａｎｊｉｎＵｎｉｖｅｒｓｉｔｙ，Ｔｉａｎｊｉｎ３０００７２）ＡｂｓｔｒａｃｔＴｈｅｒｅ...

关键词：运动估计匹配标准 H.263标准图像

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Taxonomic study of Gonia Meigen(Diptera： Tachinidae) from China

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Zoological Systematics 2018年第3期43卷 294-308页

作者： Peng Hou Xin Li Ding Yang chuntian zhang Department of Entomology China Agricultural University Beijing 100193 China Liaoning Key Laboratory of Evolution and Biodiversity Shenyang Normal University Shenyang 110034 China

The genus Gonia Meigen, 1803（Diptera, Tachinidae） is reviewed from China. One new species, G. yunnanensis Hou, Yang ＆ zhang, sp. nov., are described and illustrated. Three newly records from China, G. foersteri Meigen, 1938, G. nigricoma Lee ＆ Han, 2010 and G. olgae（Rohdendorf, 1927） are noted and illustrated too. Diagnoses of species examined and a key to 14 species of Gonia in China are provided.

关键词： Calyptratae Exoristinae Goniini new species key

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氯乙醇合成工艺研究

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氯碱工业 2024年第8期60卷 11-13页

作者：王柏一孙玉婷郭露泽张春天郭闯锦西化工研究院有限公司辽宁葫芦岛125000

介绍了用环氧乙烷和氯化氢合成氯乙醇的方法。通过控制单一变量试验,得到质量分数为85%左右的氯乙醇产品的工艺条件为:环氧乙烷和氯化氢的物质的量的配比为1:1.05,合成反应温度为30℃,中和反应时间为40min(环氧乙烷流量为185kg/h),中和... 详细信息

介绍了用环氧乙烷和氯化氢合成氯乙醇的方法。通过控制单一变量试验,得到质量分数为85%左右的氯乙醇产品的工艺条件为:环氧乙烷和氯化氢的物质的量的配比为1:1.05,合成反应温度为30℃,中和反应时间为40min(环氧乙烷流量为185kg/h),中和反应温度为25℃。

关键词：环氧乙烷氯化氢氯乙醇反应温度反应时间

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Exploring the Roles of Single Atom in Hydrogen Peroxide Photosynthesis

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Nano-Micro Letters 2024年第2期16卷 32-67页

作者： Kelin He Zimo Huang Chao Chen chuntian Qiu Yu Lin Zhong Qitao zhang International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518000China Queensland Micro‑and Nanotechnology Centre School of Environment and ScienceGriffith UniversityNathanQLD 4222Australia Institute for Sustainable Transformation School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 51006China ZJU‑Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311215China

This comprehensive review provides a deep exploration of the unique roles of single atom catalysts(SACs)in photocatalytic hydrogen peroxide(H_(2)O_(2))*** offer multiple benefits over traditional catalysts such as improved efficiency,selectivity,and flexibility due to their distinct electronic structure and unique *** review discusses the critical elements in the design of SACs,including the choice of metal atom,host material,and coordination environment,and how these elements impact the catalytic *** role of single atoms in photocatalytic H_(2)O_(2)production is also analysed,focusing on enhancing light absorption and charge generation,improving the migration and separation of charge carriers,and lowering the energy barrier of adsorption and activation of *** these advantages,several challenges,including H_(2)O_(2)decomposition,stability of SACs,unclear mechanism,and low selectivity,need to be *** towards the future,the review suggests promising research directions such as direct utilization of H_(2)O_(2),high-throughput synthesis and screening,the creation of dual active sites,and employing density functional theory for investigating the mechanisms of SACs in H_(2)O_(2)*** review provides valuable insights into the potential of single atom catalysts for advancing the field of photocatalytic H_(2)O_(2)production.

关键词： Single atom catalysts H_(2)O_(2)photosynthesis Catalyst design and optimization

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某超细粒级磁铁矿艾砂磨机三段磨矿半工业试验

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现代矿业 2024年第1期40卷 168-171页

作者：张春田孙希乐邓庆超许新跃张林赵尚曾鹏毅郭淑飞本溪钢铁(集团)贾家堡铁矿有限责任公司浙江艾领创矿业科技有限公司

本钢集团某超细粒级磁铁矿为了解决铁精矿品位低的问题,针对原磨矿设备效率低和磨矿产品过磨、欠磨的问题,采用ALC-1000L型艾砂磨机开展了半工业试验研究。通过从生产流程中分流部分二段磁选粗精矿进入艾砂磨机磨矿,与生产中的三段磨矿... 详细信息

本钢集团某超细粒级磁铁矿为了解决铁精矿品位低的问题,针对原磨矿设备效率低和磨矿产品过磨、欠磨的问题,采用ALC-1000L型艾砂磨机开展了半工业试验研究。通过从生产流程中分流部分二段磁选粗精矿进入艾砂磨机磨矿,与生产中的三段磨矿分级流程平行作业,艾砂磨排矿并入现场三段磁选流程。试验结果表明:艾砂磨机磨矿产品粒级分布更窄,艾砂磨排矿与现场三段球磨旋流器溢流相比,经磁选后的铁精矿品位提高了3.65个百分点,尾矿品位降低了2.18个百分点,艾砂磨机分选指标较好,且节能降耗效果显著。

关键词：磁铁矿细粒级嵌布选择性磨矿窄粒级分布艾砂磨机

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基于全变差和脊波变换的海岸线提取算法

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仪器仪表学报 2009年第12期30卷 2580-2585页

作者：张锁平张春田天津大学电子信息工程学院天津300072 国家海洋技术中心天津300112

为有效解决视频图像中海岸线的自动提取问题,提出一种结合全变差增强水陆边缘和脊波变换预测搜索区域的海岸线提取算法。首先基于最小化全变差模型降噪和增强边缘;第2步,根据水陆像素的彩色特征,计算彩色梯度向量;第3步,利用脊波变换预... 详细信息

为有效解决视频图像中海岸线的自动提取问题,提出一种结合全变差增强水陆边缘和脊波变换预测搜索区域的海岸线提取算法。首先基于最小化全变差模型降噪和增强边缘;第2步,根据水陆像素的彩色特征,计算彩色梯度向量;第3步,利用脊波变换预测水陆交界处的大致方向和动态范围,缩小检测区域;最后用一种改进的最小代价梯度跟踪模型对海岸线进行搜索,跟踪并精确提取最终的海岸线定位参数。实验结果证明了算法的有效性和较强的抗噪声能力,并且对不同光照条件具有鲁棒性,是视频图像中提取海岸线的新方法,为下一步设计应用系统打下了基础。

关键词：海岸线边缘检测全变差脊波变换 Radon变换小波变换

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