TURNING OVER A NEW LEAF

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TURNING OVER A NEW LEAF

机译：转过一个新的叶子

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Inspired by aspen leaves, researchers at the University of Warwick believe they can increase the life expectancy of robots exploring Mars-or any other slightly windy planet. Even though the Mars Opportunity rover had an impressive run-15 years-it depended for energy on its solar panels, and when a planet-wide dust storm blocked sunlight, the rover's fate was seated. The Warwick scientists have devised an energy-harvesting mechanism that could be used as an emergency generator. Using mathematical modeling to better understand the physical properties that make the aspen leaf tremble in the slightest breeze-notably, the flat shape of its stem-they designed a mechanical equivalent. The resulting device uses a cantilever beam to mimic the stem and a curved blade tip with a circular arc cross section acting like the main leaf. Low-speed wind tunnel tests found it more responsive than the blunter bodies typically envisioned for energy harvesters-making it ideal for the anemic atmosphere and thin winds on Mars.

机译：沃里克大学的研究人员灵感来自沃尔彭叶，相信他们可以增加机器人的预期寿命 - 或任何其他略带刮风的星球。即使火星机遇流浪者令人印象深刻的运行15年 - 它依赖于太阳能电池板上的能量，当一个星球宽的沙尘暴阻塞阳光时，流浪者的命运就座。 Warwick科学家设计了一种能量收集机制，可以用作应急发电机。使用数学建模以更好地了解使白杨叶在丝毫微风中颤抖的物理性质 - 特别是其茎的平坦形状 - 它们设计了机械当量。所得到的装置使用悬臂梁模拟杆和弯曲的刀片尖端，圆弧横截面用作主叶。低速风洞试验发现它比通常设想的空间机构更响应于能量收割机 - 使其成为MARS上贫血气氛和薄风的理想选择。

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《Air and Space》 |2019年第2期|13-13|共1页
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1. Differences Regarding Useful Matter Accumulation in Leaf-bearing Leafs and Resinous Acicular Leafs [J] . Attila SZABO, Horea CRIVEANU Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture . 2009,第2期

机译：含叶叶片和针状叶叶片中有用物质积累的差异
2. Functional Crown Architecture of Five Temperate Broadleaf Tree Species: Vertical Gradients in Leaf Morphology, Leaf Angle, and Leaf Area Density [J] . Marc Hagemeier, Christoph Leuschner Forests . 2019,第3期

机译：五种温带阔叶树种的功能性冠结构：叶形态，叶角度和叶面积密度的垂直梯度
3. Non-destructively predicting leaf area, leaf mass and specific leaf area based on a linear mixed-effect model for broadleaf species [J] . Liu Zhili, Zhu Yu, Li Fengri, Ecological indicators . 2017,第jula期

机译：基于线性混合效应模型的阔叶树种的叶面积，叶质量和比叶面积无损预测
4. Wavelength Identification of Red Betel Leaf (Piper Crocatum), Green Betel Leaf (Piper Betle L.) and Black Betel Leaf (Piper Betle V.) Using Ultraviolet-Visible (UV-Vis) Spectroscopy Method Coupled with Principal Component Analysis (PCA) [C] . Ayu Anisa Damayanti, Ni Luh Putu Trisnawati, Hery Suyanto International Seminar on Photonics, Optics, and Its Applications . 2020

机译：使用紫外线可见（UV-VIS）光谱法与主成分分析（PCA）相结合的红色槟榔（Piper Cablocatum），绿色叶片叶片（Piper Betlle L.）和黑叶片叶（Piper Betle V.）的波长识别
5. On the contribution of leaf surface wetness, leaf size and leaf longevity to variation in leaf water and carbon balance. [D] . Simonin, Kevin Allen. 2009

机译：关于叶片表面湿度，叶片尺寸和叶片寿命对叶片水分和碳平衡变化的影响。
6. The relationship of leaf photosynthetic traits – Vcmax and Jmax – to leaf nitrogen leaf phosphorus and specific leaf area: a meta-analysis and modeling study [O] . Anthony P Walker, Andrew P Beckerman, Lianhong Gu, 2014

机译：叶片光合特性Vcmax和Jmax与叶片氮叶磷和特定叶面积的关系：荟萃分析和模型研究
7. Figure 1: Symptoms associated to squash leaf curl virus (SLCuV) in Cucurbita pepo: thickened leaf vein-banding, mild chlorosis, severe leaf curling, reduction in the size of leaf, leaf distortion and mottled interveinal tissue were observed in squash plantation. [O] . -1

机译：图1：与南瓜叶卷曲病毒（SLCUV）相关的症状：在南瓜植物中观察到增厚的叶静脉带，轻度氯鱼杨，严重的叶片卷曲，叶片尺寸的减少，叶片变形和斑驳的间部组织。

TURNING OVER A NEW LEAF

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