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A thelytokous predatory mite is more cannibalistic towards distant kin

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Current Zoology 2023年第5期69卷 578-584页

作者： Keshi zhang zhi-qiang zhang School of Biological Sciences University of Auckland3A Symonds StreetAuckland1072New Zealand and Manaaki Whenua-Landcare Research 231 Morrin RoadAuckland1072New Zealand

Kin recognition has been widely observed in various *** avoidance may be a strong driver for the evolution of kin recognition,as it may avoid a reduction in inclusive *** recognition has recently been observed in a generalist phytoseiid,Amblyseius herbicolus(Acari:Phytoseiidae).This study experimentally examined the degree of relatedness needed between prey larvae and cannibal adults of *** for the occurrence of kin *** adults were individually placed in enclosed arenas with two prey,a daughter and a more distant related larva,to observe their cannibalizing *** adults of *** did not discriminate between close relatives(daughter versus niece)but preferably cannibalized more distant kin(i.e.,first and second cousins once removed).Phenotype matching and familiarization seem prominent as recognition mechanisms used by *** *** effect of learning on kin recognition through prior contact in *** requires further *** on other adaptive functions of kin recognition of ***,such as cooperation and parental care,may provide meaningful insights.

关键词： Acari cannibalism choice test close kin discrimination kin recognition

Age-specific mortality and fecundity of a spider mite under diet restriction and delayed mating

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Insect Science 2022年第3期29卷 889-899页

作者： Guang-Yun Li zhi-qiang zhang Centre for Biodiversity and Biosecurity School of Biological SciencesUniversity of AucklandAucklandNew Zealand Manaaki Whenua-Landcare Research AucklandNew Zealand Key Laboratory of Entomology and Pest Control Engineering College of Plant ProtectionSouthwest UniversityChongqingChina

Numerous experimental life-history studies on aging are mainly baised on two classical models—fruit fly Drosophila melanogaster(Meigen)and nematode Caenorhab-ditis elegans(Maupas)—with relatively little attention given to other organisms with different life-history ***-spotted spider mite Tetranychus urticae Koch(Acari:Tetranychidae)differs from many other arthropods in that the females continue their growth in the early adult stage and can reproduce sexually and *** this study,the influences of dietary restriction and delayed mating on the aging patterns of the spider mite were examined with the prevailing survival and reproduction trade-off hypothesis of aging being *** sex-specific responses of the spider mites were *** females showed longevity extension on diet restriction(fasting for 2 days in every 4 days)compared with their counterparts being fed ad libitum,and after delayed mating for 9 days,while the males displayed a decrease in lifespan when experiencing diet restriction but were not significantly influenced by delayed *** analysis was used to investigate the relationship between mite survival and reproduction traits,including longevity,female lifetime reproduction,age at first reproduction,early reproductive efforts and late reproductive efforts,yielding no evidence for trade-offs between these life-history *** additive effects of dietary restriction and delayed mating in lifespan extension of female spider mites were confirmed,proving that diet restriction is a robust anti-aging intervention,and that later onset of reproduction can prolong adult lifespan in females.

关键词： age-specific mortality delayed mating diet restriction reproduction sex difference trade-off

Numerical analysis of added mass and damping of floating production,storage and offloading system

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Acta Mechanica Sinica 2012年第3期28卷 870-876页

作者： Ke Wang Xi zhang zhi-qiang zhang Wang Xu Department of Engineering Mechanics State Key Laboratory of Structural Analysisfor Industrial EquipmentDalian University of Technology116024 DalianChina

An integral equation approach is utilized to in- vestigate the added mass and damping of floating produc- tion, storage and offloading system （FPSO system）. Finite water depth Green function and higher-order boundary ele- ment method are used to solve integral equation. Numeri- cal results about added mass and damping are presented for odd and even mode motions of FPSO. The results show ro- bust convergence in high frequency range and can be used in wave load analysis for FPSO designing and operation.

关键词： FPSO. Added mass Damping. Green function Higher-order boundary element method

Prey life stages modulate effects of predation stress on prey lifespan,development,and reproduction in mites

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Insect Science 2023年第3期30卷 844-856页

作者： Xiaoying Weil Guangyun Li zhi-qiang zhang School of Biological Sciences The University of AucklandAucklandNew Zealand Key Laboratory of Entomology and Pest Control Engineering College of Plant ProtectionSouthwest UniversityChongqingChina Manaaki Whenua-Landcare Research AucklandNewZealand

The non-consumptive effects of predator-induced stress can influence a variety of life-history *** previous studies focused only on short-term effects such as development and reproductive *** studies have showed that long-term predation stress(given during the whole life of the prey)and short-term predation stress(provided during the immature stage of the prey)could generate completely opposite results:the former could decrease lifespan,whereas the later could increase ***,it is still unclear whether the advantage is because of the short duration of exposure or the early stage of life during which exposure was ***,in this study,the prey(Tyrophagus putrescentiae)was exposed to predation stress from the predator(Neoseiulus cucumeris)during different life stages(larva,protonymph,tritonymph,first 5 d of oviposition,the full lifespan or none of the above).The results showed that the predation stress supplied during larval and protonymphal stage delayed development,reduced fecundity and prolonged lifespan of the prey,while the stress given during tritonymphal stage only reduced lifespan slightly and the stress given during the first 5 d of oviposition did not change lifespan but reduced *** study indicated that the effects of predation stress are dependent on prey life stage and the predation stress experienced in the early life stages is important to lifespan modulation.

关键词： early life experience lifespan non-consumptive effects predation stress tyrophagus

Ceramic-lined compound copper pipe prepared by SHS process

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中国有色金属学会会刊：英文版 2004年第z1期14卷 106-110页

作者： FU Han-guang JIANG zhi-qiang zhang Xiao-hong Department of Mechanical Engineering Tsinghua University Beijing 100084 China Department of Industrial Engineering Zhengzhou Institute of Aeronautics Zhengzhou China Taiyuan Iron and Steel (Group) Company Taiyuan China

Self-propagating high-temperature synthesis(SHS) is a new kind of material synthesis technique, and has characteristics with respect to low energy consumption, short synthetizing time, high production quantity, high product purity and no environmental pollution. When SHS combines with centrifugal casting, ceramic-lined compound copper pipe(CLCCP) can be produced, the inner surface of copper pipe can produce ceramic coatings having good wear and corrosion resistance. In order to increase the densification degree, combining strength and toughness of ceramic layer, the effects of additives such as SiO2, CrO3, Na2B4O7 and ZrO2 are researched, adding SiO2 and CrO3 in thermite, the densification degree of ceramic layer increases, adding Na2 B4 O7 in thermite can increase combining strength, adding ZrO2 in thermite can increase the toughness of ceramic layer. CLCCP is used in tubular billet crystallizer, having excellent service effects and decreasing the production cost of tubular billet.

关键词： SHS ceramic lining compound copper pipe crystallizer

Transport property of inhomogeneous strained graphene

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Chinese Physics B 2021年第3期30卷 88-95页

作者： Bing-Lan Wu qiang Wei zhi-qiang zhang Hua Jiang School of Physics and Technology Soochow UniversitySuzhou 215006China State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Laser SpectroscopyShanxi UniversityTaiyuan 030006China Institute for Advanced Study Soochow UniversitySuzhou 215006China

In analogy to real magnetic field, the pseudo-magnetic field (PMF) induced by inhomogeneous strain can also formthe Landau levels and edge states. In this paper, the transport properties of graphene under inhomogeneous strain arestudied. We find that the Landau levels have non-zero group velocity, and construct one-dimensional conducting *** addition, the edge states and the Landau level states in PMF are both fragile under disorder. We also confirm that thebackscattering of these states could be suppressed by applying a real magnetic filed (MF). Therefore, the transmissioncoefficient for each conducting channel can be manipulated by adjusting the MF strength, which indicates the applicationof switching devices.

关键词： disorder effect pseudo-magnetic field strain transport properties

Cell number explains the intraspecific spur-length variation in an Aquilegia species

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Plant Diversity 2019年第5期41卷 307-314页

作者： zhi-Li Zhou Yuan-Wen Duan Yan Luo Yong-Ping Yang zhi-qiang zhang Institute of Tibetan Plateau Research at Kunming Kunming Institute of BotanyChinese Academy of SciencesKunming650201China University of Chinese Academy of Sciences Beijing 100049China Gardening and Horticulture Department Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla666303China Laboratory of Ecology and Evolutionary Biology Yunnan UniversityKunming650091China

Variations of nectar spur length allow pollinators to utilize resources in novel ways,leading to the different selective pressures on spurs and allowing taxa to ***,the mechanisms underlying spur length variation remain *** comparisons of spur length suggest that both cell division and anisotropic expansion could explain the changes of spur length,and that hormone-related genes contribute to the process of spur *** contrast,little is known about intraspecific spur length *** Aquilegia rockii,spur length varies strikingly,ranging from 1 mm to 18 *** examine the potential mechanisms underlying spur length variation in ***,we observed cell morphology and analyzed RNA-seq of short-and long-spurred *** electron microscopy revealed that at two positions on spurs there were no differences in either cell density or cell anisotropy between short-and long-spurred flowers,suggesting that in *** changes in cell number may explain variations in spur *** addition,we screened transcriptomes of short-and long-spurred flowers for differentially expressed genes;this screen identified several genes linked to cell division(e.g.,F-box,CDKB2-2,and LST8),a finding which is consistent with our analysis of the cellular morphology of ***,we did not find any highly expressed genes involved in the hormone pathway in long-spurred *** contrast to previous hypotheses that anisotropic cell expansion leads to interspecific spur variation in Aquilegia,our results suggest that cell number changes and related genes are mainly responsible for spur length variations of ***,the underlying mechanisms of similar floral traits in morphology may be quite different,enriching our understanding of the mechanisms of flower diversity in angiosperms.

关键词： Aquilegia rockii Cell number Columbine Floral polymorphism Intraspecific variation Nectar spur

Large deflection deformation behavior of a Zr-based bulk metallic glass for compliant spinal fixation application

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Journal of Materials Science & Technology 2024年第6期173卷 86-99页

作者： Diao-Feng Li Chun-Guang Bai zhi-qiang zhang Hui-Bo zhang Nan Li Jian Zhao Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

A novel compliant spinal fixation designed based on the concept of compliant mechanisms can reduce the stress-shielding effect and adjacent segment degeneration(ASD)effectively,but propose higher requirements for the properties of the used *** metallic glasses(BMGs),as a kind of young biomaterials,exhibiting excellent comprehensive properties,which are attractive for compliant spinal ***,according to the practical service condition of the basic elements in compliant spinal fixation,large deflection deformation behaviors of Zr_(61)Ti_(2)Cu_(25)Al_(12)(at.%,ZT1)BMG beam,including elastic,yielding and plastic were investigated *** was shown that the theoretical nonlinear analytical solution curve as the benchmark not only with the capacity to predict the nonlinear load-deflection relation within the elastic deformation regime,but also assists to capture the yielding event roughly,which can be used as a powerful design tool for *** capture the beginning of the yielding event exactly,bending proof strength(σ_(p),0.05%)accompanied with tiny permanent strain of 0.05% was proposed and determined for BMGs in biomedical implant applications,which is of significance for setting the allowable operating limits of the basic flexible *** approach of interrupted loading-unloading cycles,plastic deformation driven by the bending moment can be classified into two typical stages:the initial stage which mainly characterized by the nucleation and intense interaction of abundant shear bands when the plastic strain below the critical value,and the second stage which dominated by the progressive propagation of shear bands and coupled with the emergence of shear offsets on tensile *** plasticity of BMG beam structures depends on the BMG's inherent plastic zone size(rp).When the half beam thickness less than that of the rp,the plastic deformation of BMGs will behave in a stable manner,which can be acted as the margin of safety effectiv

关键词： Metallic glasses Biomaterials Compliant spinal fixation Large deflection deformation Plastic deformation

Mass brain tissue lost after decompressive craniectomy:A case report

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World Journal of Clinical Cases 2022年第13期10卷 4314-4320页

作者： Guang-Gang Li zhi-qiang zhang Yan-Hong Mi Department of Critical Care Medicine 7^(th)Medical Center of PLA General HospitalBeijing 100700China Department of Radiology 7^(th)Medical Center of PLA General HospitalBeijing 100700China

BACKGROUND The brain is the most important organ to maintain ***,the amount of brain tissue required for maintaining life in humans has not been previously *** SUMMARY A 33-year-old woman fell from the third floor three months before admission to our *** received a decompressive craniectomy soon after *** the operation,operative incision disunion occurred due to the high *** tissue flowed from the incision,and intracranial infection *** fell into deep coma and was sent to our *** right temporal surgical incision was not healed and had a cranial defect of 10 cm×10 *** intracranial cavity was observed from the skull defect,and the brain tissue was largely *** addition,no brain tissue was observed by visual *** computed tomography showed that only a small amount of brain tissue density shadow was compressed in the cerebellum and *** days after hospitalization in our hospital,her parents transferred her to a hospital near her *** patient died six days after discharge from our *** This rare case provides some proof of the importance of the brainstem in the maintenance of cardiac rhythm and vascular *** should carefully protect brainstem neurons during *** can maintain the cardiac rhythm of patients who lose their major brain tissue with modern technology,but the family of the patients should be aware of death and end-life care.

关键词： Brainstem Brain death Decompressive craniectomy Case report