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Tendril-Based Climbing Plants to Model, Simulate and Create Bio-Inspired Robotic Systems

Journal of Bionic Engineering 2015年第2期12卷 250-262页

作者： Renato Vidoni tanja mimmo Camilla Pandolfi Faculty of Science and Technology Free University of Bolzano Piazza universith 3 91 O0 Bolzano Italy European Space Agency-Advanced Concepts Team Estec Noordwjik Netherlands

Bioinspiration can be considered one of the keys for future smart and versatile robotic systems. Plants could be an im- portant source of ideas despite the fact that they have not yet been deeply observed and considered. In this paper, climbing tendril-bearer plants that, by means of irritable filiform organs called tendrils, search for a support, grasp it and climb to gain height, have been used to study and develop an effective climbing robot. The study aimed first to evaluate the main movements and behaviors of the tendril from a biomimetic point of view. The tendril complexity was then simplified, a robotic model was developed and a kinematic simulator was designed and implemented to visualize and evaluate the chosen system. Finally, based on the biological, technical and numerical evaluations, the main tendril behaviors were replicated by proof of concept devices made of smart materials to move towards a practical realization and to replicate the simulated results. The designed proof of concept prototypes showed food repeatability and feasibility.

关键词： climbing plants robotic tendril kinematic model Shape-Memory-Alloy (SMA) grasping

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Iron Mobilization and Mineralogical Alterations Induced by Iron-Deficient Cucumber Plants (Cucumis sativus L.) in a Calcareous Soil

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Pedosphere 2018年第1期28卷 59-69页

作者： Concetta Eliana GATTULLO Youry PII Ignazio ALLEGRETTA Luca MEDICI Stefano CESCO tanja mimmo Roberto TERZANO Department of Soil Plant and Food Sciences University of Bari "Aldo Moro" Faculty of Science and Technology Free University of Bozen/Bolzano Institute of Methodologies for Environmental Analysis National Research Council of Italy (I.M.A.A.-C.N.R.)

Dicotyledons cope with ion(Fe) shortage by releasing low-molecular-weight organic compounds into the rhizosphere to mobilize Fe through reduction and complexation mechanisms. The effects induced by these root exudates on soil mineralogy and the connections between Fe mobilization and mineral weathering processes have not been completely clarified. In a batch experiment, we tested two different kinds of organic compounds commonly exuded by Fe-deficient plants, i.e., three organic acids(citrate, malate, and oxalate)and three flavonoids(rutin, quercetin, and genistein), alone or in combination, for their ability to mobilize Fe from a calcareous soil and modify its mineralogy. The effect of root exudates on soil mineralogy was assessed in vivo by cultivating Fe-deficient and Fe-sufficient cucumber plants(Cucumis sativus L.) in a RHIZOtest device. Mineralogical analyses were performed by X-ray powder diffraction. The batch experiment showed that citrate and, particularly, rutin(alone or combined with organic acids or genistein)promoted Fe mobilization from the soil. The combinations of rutin and organic acids modified the soil mineralogy by dissolving the amorphous fractions and promoting the formation of illite. These mineralogical alterations were significantly correlated with the amount of Fe mobilized from the soil. The RHIZOtest experiment revealed a drastic dissolution of amorphous components in the rhizosphere soil of Fe-deficient plants, possibly caused by the intense release of phenolics, amino acids, and organic acids, but without any formation of illite. Both batch and RHIZOtest experiments proved that exudates released by cucumber under Fe deficiency concurred to the rapid modification(on a day-scale) of the mineralogy of a calcareous soil.

关键词： flavonoids mineral weathering organic acids rhizosphere X-ray powder diffraction

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Comment on:oncologic outcomes after robotic pancreatic resections are not inferior to open surgery

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Hepatobiliary Surgery and Nutrition 2021年第6期10卷 842-845页

作者： Antonio mimmo Tullio Piardi Department of Hepatobiliary Pancreatic and Digestive Oncological SurgeryRobert DebréUniversity HospitalUniversity of Reims Champagne-ArdenneReimsFrance Research Unit Ea3797 VieFra Department of HepatobiliaryPancreatic and Digestive Oncological SurgeryRobert DebréUniversity HospitalUniversity of Reims Champagne-ArdenneReimsFrance

We read with interest the recently published article of Girgis et al.(1).The paper is a non-inferiority study regarding robotic versus open approach in the pancreatic resection for pancreatic adenocarcinoma(PDAC).The authors examined post-surgical complications,overall survival(OS)and the effect of surgical approach for the access to adjuvant chemotherapy(aCHT).According to the majority of scientific literature,aCHT improves the rate of survival in patients after resected *** a pancreatectomy,post-surgical complications limit the access to aCHT and,consequently,they reduce the OS(2).

关键词： resection chemotherapy

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由地下水卸载控制的2011年洛尔卡地震滑动分布

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地壳构造与地壳应力 2017年第1期 18-22页

作者： Pablo J.González Kristy F.Tiampo mimmo Palano Flavio Cannavó José Fernández 张杰(翻译) 黄禄渊(校对) Department of Earth Sciences University of Western OntarioBiological and Geological Sciences BuildingLondonOntario N6A 5B7Canada Istituto Nazionale di Geofisica e Vulcanologia Osservatorio Etneo-Sezione di CataniaPiazza Roma 295123 CataniaItaly Instituto de Geociencias (CSIC-UCM) Facultad de Ciencias MatematicasPlaza de Ciencias 3Ciudad Universitaria28040 MadridSpain 不详

地震的产生、传播和停止,都受到断层摩擦特性[1,2]和震前应力[3,4]的影响。地震触发和诱发研究[3,4]可以为这样的作用提供独特的见解。然而,这些研究的必要条件——近场测量、地表变形[8,9]和震前应力都是少见的。在本文中,我们使用大... 详细信息

地震的产生、传播和停止,都受到断层摩擦特性[1,2]和震前应力[3,4]的影响。地震触发和诱发研究[3,4]可以为这样的作用提供独特的见解。然而,这些研究的必要条件——近场测量、地表变形[8,9]和震前应力都是少见的。在本文中,我们使用大地测量数据来确定2011年5月11日西班牙东南部洛尔卡矩震级5.1级地震的地表变形。我们使用弹性位错模型来表明地震成核,主要断层滑移发生在沿着西班牙穆尔西亚阿拉马断层断裂平面2~4km浅层区域内。滑移穿过断裂段扩展到表层,伴随着摩擦性质由不稳定趋于稳定。断裂滑动区域和库仑正压力模式有很好的相关性,从而改变了我们从附近盆地含水层中开采地下水计算的结果。因此,我们认为洛尔卡地震的浅层滑动分布是由上部摩擦转换生震层的应力卸载造成,而地壳卸载压力是由地下水开采引起的。我们的研究结果表明,人类活动会影响地震如何发生以及何时发生。

关键词：地下水开采地震滑动卸载控制大地测量数据弹性位错模型摩擦特性地表变形

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