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  1. Book ; Online: Insects : Functional Morphology, Biomechanics and Biomimetics

    Rajabi, Hamed / Gorb, Stanislav N. / Wu, Jianing

    2022  

    Keywords Mathematics & science ; Biology, life sciences ; Zoology & animal sciences ; cornus ; geometric morphometrics ; ovipositor ; Siricidae ; taxonomy ; wing ; ground type ; jump ; locust ; reaction force ; kinematics ; elevation angle ; Reduviidae ; mouthparts ; sensillum ; feeding ; predation ; attachment ; glue ; oviposition ; biomechanics ; walking leaf ; morphology ; plant surface interactions ; insect-plant relations ; egg dispersal ; insects ; wings ; deformation ; flight ; bending ; torsion ; camber ; control ; physical models ; locomotion ; animal flight ; wing structure ; aerodynamics ; flight force ; Erthesina fullo ; ultramorphology ; feeding performance ; Chironomus riparius ; Diptera ; confocal laser scanning microscopy ; finite element modelling ; antennal hearing ; multimodal sensor ; biological structures ; computer vision ; mesh generation ; simulation ; digital image processing ; honey bee ; mouth parts anatomy ; nectar feeding behaviour ; dynamics ; energy-saving strategies ; n/a
    Size 1 electronic resource (167 pages)
    Publisher MDPI - Multidisciplinary Digital Publishing Institute
    Publishing place Basel
    Document type Book ; Online
    Note English ; Open Access
    HBZ-ID HT021291599
    ISBN 9783036528939 ; 3036528938
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  2. Article ; Online: Morphological and structural characteristics of the elytra reduce impact damage to ladybird beetles.

    Fu, Kaifei / Zhang, Jie / Hu, Jinbo / Wu, Jianing / Yang, Yunqiang

    Journal of insect physiology

    2024  Volume 154, Page(s) 104630

    Abstract: Beetle elytra act as natural protective covers and effectively shield their flexible abdomens and fragile hindwings from damage. The existing studies have attributed this contribution of the elytra to its honeycomb structures. In this combined ... ...

    Abstract Beetle elytra act as natural protective covers and effectively shield their flexible abdomens and fragile hindwings from damage. The existing studies have attributed this contribution of the elytra to its honeycomb structures. In this combined experimental and theoretical study, we used the seven-spotted ladybird beetle to demonstrate that both biological morphology and the hollow structure of the dome-like elytra combined to reduce damage during falling. The falling ladybird beetles had a high probability (59.52%) of hitting the ground with the costal edge of the elytra. This strategy could assist with converting the translational energy into rotational kinetic energy, resulting in the reduction of the impulse during falling. In addition, the hollow structures on the elytra could further absorb the residual impact energy. In the future, this biological paradigm could be used as a basis for the development of falling/landing techniques for advanced robots.
    MeSH term(s) Animals ; Coleoptera/anatomy & histology ; Wings, Animal/anatomy & histology ; Proteomics
    Language English
    Publishing date 2024-03-02
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1879-1611
    ISSN (online) 1879-1611
    DOI 10.1016/j.jinsphys.2024.104630
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: The effect of homocysteine-lowering therapy on the formation of carotid atherosclerosis: A follow-up study in the rural areas of northwest China.

    Wu, Jianing / Shi, Rui / Li, Hua / Zhang, Xiao

    Heliyon

    2023  Volume 9, Issue 11, Page(s) e21548

    Abstract: Objective: To explore the risk factors for carotid atherosclerosis in the rural areas of Northwest China, and to assess whether reducing serum homocysteine can prevent carotid atherosclerosis in subjects with hyperhomocysteinemia.: Method: This ... ...

    Abstract Objective: To explore the risk factors for carotid atherosclerosis in the rural areas of Northwest China, and to assess whether reducing serum homocysteine can prevent carotid atherosclerosis in subjects with hyperhomocysteinemia.
    Method: This observational study with 767 participants aged 40 years or older was conducted over 3 years. Color Doppler ultrasonography was performed to measure carotid atherosclerosis. We recorded biochemical indexes and carotid ultrasound results in the first and fourth years.
    Result: A total of 767 individuals (48.5 % men) were analyzed. Older age, hypertension, and higher levels of baseline low-density lipoprotein cholesterol (LDL-C) were risk factors for increased carotid intima-media thickness (CIMT), carotid plaque, and carotid stenosis (All P < 0.05). No association was found between decreased serum homocysteine (Hcy) levels and CIMT, carotid plaque, or carotid stenosis in individuals with hyperhomocysteinemia.
    Conclusion: Older age, hypertension, and higher baseline levels of LDL-C were independent risk factors for carotid atherosclerosis. Reducing serum Hcy levels may not prevent carotid atherosclerosis in the general population with hyperhomocysteinemia.
    Language English
    Publishing date 2023-11-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2023.e21548
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Carbonylative Formal Cycloaddition between Alkylarenes and Aldimines Enabled by Palladium-Catalyzed Double C-H Bond Activation.

    Ding, Yongzheng / Wu, Jianing / Huang, Hanmin

    Journal of the American Chemical Society

    2023  Volume 145, Issue 9, Page(s) 4982–4988

    Abstract: Double C-H bond activation can enable an expeditious reaction pathway to cyclic compounds, offering an efficient tool to synthesize valuable molecules. However, cyclization reaction enabled by double C-H bond activation at one carbon atom is nearly ... ...

    Abstract Double C-H bond activation can enable an expeditious reaction pathway to cyclic compounds, offering an efficient tool to synthesize valuable molecules. However, cyclization reaction enabled by double C-H bond activation at one carbon atom is nearly unknown. Herein, we report a carbonylative formal cycloaddition of alkylarenes with imines via double benzylic C-H bond activation at one carbon atom, allowing a straightforward synthesis of β-lactams from readily accessible alkylarenes and imines, which paves the way for developing an annulation reaction through double C-H bond activation at one carbon atom.
    Language English
    Publishing date 2023-02-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.3c00004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 4' 55/32: Show issues
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  5. Article ; Online: Adult rhinoceros beetles use a sweeping pattern to ingest high-viscosity fluid.

    Yang, Hao / Wei, Jiangkun / Xia, Weilin / Ge, Siqin / Wu, Jianing

    Journal of insect physiology

    2023  Volume 151, Page(s) 104572

    Abstract: More than half of all insect species utilize various natural liquids as primary diet. The concentrated liquids with energy-dense nutrition can provide highly favorable rewards, however, their high-viscosity poses challenges to the insect for ingesting. ... ...

    Abstract More than half of all insect species utilize various natural liquids as primary diet. The concentrated liquids with energy-dense nutrition can provide highly favorable rewards, however, their high-viscosity poses challenges to the insect for ingesting. Here we show that rhinoceros beetles, Trypoxylus dichotomus (Coleoptera: Scarabaeidae), are capable of ingesting sugar solutions with viscosities spanning four orders of magnitude, exhibiting extraordinary adaptability to diverse natural liquid sources. We discovered a previously unidentified maxillae-sweeping motion that beetles preferentially adopt to consume highly viscous liquids, achieving a higher feeding rate than the more common direct sucking. By utilizing morphological characterizations, flow visualization, and fluid-structure coupling simulation, we revealed the underlying mechanisms of how this maxillary movement facilitates the transportation of viscous liquid. Our findings not only shed light on the multi-functionality of beetle mouthparts but also provide insights into the adaptability of generalized mouthparts to a broad range of fluid sources.
    MeSH term(s) Animals ; Viscosity ; Coleoptera ; Carbohydrates
    Chemical Substances Carbohydrates
    Language English
    Publishing date 2023-10-10
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1879-1611
    ISSN (online) 1879-1611
    DOI 10.1016/j.jinsphys.2023.104572
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Hollow mandibles: Structural adaptation to high-speed and powerful strike in the trap-jaw ant Odontomachus monticola.

    Wang, Zixin / Zhan, Yuping / Yang, Yunqiang / Wu, Jianing

    Journal of insect physiology

    2022  Volume 141, Page(s) 104426

    Abstract: The trap-jaw ant Odontomachus monticola manipulates its hollow mandibles to generate extremely high speed to impact various objects through a catapult mechanism, making the violent collision occur between the mandible and the impacted objects, which ... ...

    Abstract The trap-jaw ant Odontomachus monticola manipulates its hollow mandibles to generate extremely high speed to impact various objects through a catapult mechanism, making the violent collision occur between the mandible and the impacted objects, which increases the risk of structural failure. However, how the ant balances the trade-off between the powerful clamping and impact resistance by using this hollow structure remains elusive. In this combined experimental and theoretical investigation, we revealed that the hollowness ratio of the mandible plays an essential role in counterbalancing the trade-off. Micro-CT and high-speed images suggested that the hollow mandibles facilitate a high angular acceleration to 10
    MeSH term(s) Aggression ; Animals ; Ants ; Biomechanical Phenomena ; Mandible ; X-Ray Microtomography
    Language English
    Publishing date 2022-07-27
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1879-1611
    ISSN (online) 1879-1611
    DOI 10.1016/j.jinsphys.2022.104426
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Hollow mandibles: Structural adaptation to high-speed and powerful strike in the trap-jaw ant Odontomachus monticola

    Wang, Zixin / Zhan, Yuping / Yang, Yunqiang / Wu, Jianing

    Journal of insect physiology. 2022 Aug., Sept., v. 141

    2022  

    Abstract: The trap-jaw ant Odontomachus monticola manipulates its hollow mandibles to generate extremely high speed to impact various objects through a catapult mechanism, making the violent collision occur between the mandible and the impacted objects, which ... ...

    Abstract The trap-jaw ant Odontomachus monticola manipulates its hollow mandibles to generate extremely high speed to impact various objects through a catapult mechanism, making the violent collision occur between the mandible and the impacted objects, which increases the risk of structural failure. However, how the ant balances the trade-off between the powerful clamping and impact resistance by using this hollow structure remains elusive. In this combined experimental and theoretical investigation, we revealed that the hollowness ratio of the mandible plays an essential role in counterbalancing the trade-off. Micro-CT and high-speed images suggested that the hollow mandibles facilitate a high angular acceleration to 10⁸ rad/s² for an enormous clamping force. However, this hollowness might challenge the structural strength while collision occurs. We found that under the same actuating energy, the von Mises stress of the object collided by the natural mandible striking can reach up to 2.9 times that generated by the entirely solid mandible. We defined the efficiency ratio of the von Mises stress on the impacted object to that on the mandible and found the hollow mandible achieves a more robust balance between powerful clamping and impact resistance compared to the solid mandible.
    Keywords Odontomachus ; energy ; insect physiology ; micro-computed tomography ; risk
    Language English
    Dates of publication 2022-08
    Publishing place Elsevier Ltd
    Document type Article
    ISSN 0022-1910
    DOI 10.1016/j.jinsphys.2022.104426
    Database NAL-Catalogue (AGRICOLA)

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  8. Article ; Online: Optimal kinematics of the bee tongue for viscous fluid transport.

    Wang, Bo / Liu, Xuhan / Tang, Guowei / Wu, Jianing / Yang, Yunqiang

    Soft matter

    2022  Volume 18, Issue 38, Page(s) 7317–7323

    Abstract: Honey bees can forage nectar from a large spectrum of nectariferous flowers using their rhythmically erectable tongue hairs in a viscous dipping fashion that involves a faster protraction stroke toward the nectar pool and a slower retraction stroke ... ...

    Abstract Honey bees can forage nectar from a large spectrum of nectariferous flowers using their rhythmically erectable tongue hairs in a viscous dipping fashion that involves a faster protraction stroke toward the nectar pool and a slower retraction stroke backward. Since honey bees are capable of using their hairy tongues to adapt to various feeding environments, the kinematic characteristics of the bee tongue, especially the retraction time, would likely represent evolutionary optimization. However, the phenomenon and mechanism remain elusive. In this combined experimental and theoretical study, we established a mathematical model to analyze the effects of tongue retraction time on the energy intake rate considering the unfolding dynamics of tongue hairs in the retraction phase. The theoretical optimal retraction time at which the energy intake rate reached the maximum was governed by the dimensions of tongue hairs, which matched well with the
    MeSH term(s) Animals ; Bees ; Biomechanical Phenomena ; Feeding Behavior ; Plant Nectar ; Stroke ; Tongue
    Chemical Substances Plant Nectar
    Language English
    Publishing date 2022-10-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 2191476-X
    ISSN 1744-6848 ; 1744-683X
    ISSN (online) 1744-6848
    ISSN 1744-683X
    DOI 10.1039/d2sm00832g
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Collecting differently sized particles on water surface by maneuvering pedal waves on the foot of the water snail

    Huang, Zexiang / Yang, Hao / Xu, Ke / Wu, Jianing / Zhang, Jinxiu

    Soft matter

    2022  Volume 18, Issue 40, Page(s) 7850–7858

    Abstract: The water snail ( ...

    Abstract The water snail (
    MeSH term(s) Animals ; Water ; Solid Waste ; Snails
    Chemical Substances Water (059QF0KO0R) ; Solid Waste
    Language English
    Publishing date 2022-10-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 2191476-X
    ISSN 1744-6848 ; 1744-683X
    ISSN (online) 1744-6848
    ISSN 1744-683X
    DOI 10.1039/d2sm01113a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Inversion study on elastic-plastic material parameters of red sandstone in uniaxial compression test.

    Wu, Jianing / Yang, Xiaobin / Song, Yimin / Liu, Shun / Li, Shihao / Liu, Jiawei

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 21847

    Abstract: In order to obtain the real material parameters of heterogeneous rock, the material parameters of red sandstone specimens under uniaxial compression tests are inverted based on the Digital Image Correlation (DIC) method and the Finite Element Model ... ...

    Abstract In order to obtain the real material parameters of heterogeneous rock, the material parameters of red sandstone specimens under uniaxial compression tests are inverted based on the Digital Image Correlation (DIC) method and the Finite Element Model Updating (FEMU) method. The DIC method is employed to calculate the displacement field of red sandstone specimens during uniaxial compression loading. Concurrently, a uniaxial compression elastic-plastic finite element numerical model with non-uniform material parameters is developed based on the FEMU method. The model adopts the Mohr-Coulomb yield criterion and adjusts the boundary conditions in real-time to maintain consistency with the test. The vertical displacement field of the numerical model is juxtaposed with that of the test to construct the objective function. Optimization is achieved using the Artificial Fish Swarm algorithm, which enables the acquisition of the non-uniform distribution and evolution process of the material parameters of specimens at different loading moments. The results indicate that this method can spatially obtain the non-uniform distribution field of material parameters and temporally track the evolution of material parameters during the loading process. This research lays a solid foundation for enhancing the accuracy of intelligent coal mining and dynamic disaster monitoring and early warning in coal mines.
    Language English
    Publishing date 2023-12-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-49126-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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