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首页> 外文期刊>Geochemistry, geophysics, geosystems >Micro‐computed tomography: Applications for high‐resolution skeletal density determinations: An example using annually banded crustose coralline algae
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Micro‐computed tomography: Applications for high‐resolution skeletal density determinations: An example using annually banded crustose coralline algae

机译：微计算机断层扫描：高分辨率骨骼密度测定的应用：使用每年带状甲壳素藻类的示例

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Abstract > Warming and acidification of the world's oceans are expected to have widespread consequences for marine biodiversity and ecosystem functioning. However, due to the relatively short record of instrumental observations, one has to rely upon geochemical and physical proxy information stored in biomineralized shells and skeletons of calcareous marine organisms as in situ recorders of past environments. Of particular interest is the response of marine calcifiers to ocean acidification through the examination of structural growth characteristics. Here we demonstrate the application of micro‐computed tomography (micro‐CT) for three‐dimensional visualization and analysis of growth, skeletal density, and calcification in a slow‐growing, annually banded crustose coralline alga Clathromorphum nereostratum (increment width ～380 μm). X‐ray images and time series of skeletal density were generated at 20 μm resolution and rebinned to 40, 60, 80, and 100 μm for comparison in a sensitivity analysis. Calcification rates were subsequently calculated as the product of density and growth (linear extension). While both skeletal density and calcification rates do not significantly differ at varying spatial resolutions (the latter being strongly influenced by growth rates), clear visualization of micron‐scale growth features and the quantification of structural changes on subannual time scales requires higher scanning resolutions. In the present study, imaging at 20 μm resolution reveals seasonal cycles in density that correspond to summer/winter variations in skeletal structure observed using scanning electron microscopy (SEM). Micro‐CT is a fast, nondestructive, and high‐resolution technique for structural and morphometric analyses of temporally banded paleoclimate archives, particularly those that exhibit slow or compressed growth or micron‐scale structures. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“main”> <标题类型=“main”>抽象</ title> > 预计世界海洋的热化和酸化将对海洋生物多样性和生态系统运作具有广泛影响。然而，由于乐器观测的记录相对较短，人们必须依赖于过去环境的原位记录器的生物矿化壳和钙质海洋生物的骨架中储存的地球化学和物理代理信息。特别感兴趣的是通过检查结构生长特征来对海洋酸化的反应。在这里，我们展示了微计算机断层扫描（Micro-CT）的应用，对三维可视化和分析生长，骨骼密度和钙化在缓慢生长，每年带状脆弱的珊瑚藻 clathromorphum nereostratum </ i> （增量宽度〜380μm）。在20μm分辨率下产生X射线图像和骨骼密度的时间序列，并在敏感性分析中重构为40,60,80和100μm。随后计算钙化速率作为密度和生长的产物（线性延伸）。虽然在不同的空间分辨率下，骨骼密度和钙化率没有显着不同（后者受增速的强烈影响），但清晰可视化微米级生长特征，并且对底级尺度的结构变化的量化需要更高的扫描分辨率。在本研究中，20μm分辨率的成像揭示了密度的季节性循环，其对应于使用扫描电子显微镜（SEM）观察到的骨骼结构中的夏季/冬季变化。 Micro-CT是一种快速，非破坏性和高分辨率的技术，用于颞型带状古气候档案的结构和形态学分析，特别是那些表现出缓慢或压缩的生长或微米级结构的结构。 </ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-23285/'>《Geochemistry, geophysics, geosystems》</a> <b style="margin: 0 2px;">|</b><span>2017年第9期</span><b style="margin: 0 2px;">|</b><span>共12页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Chan P.&option=202" target="_blank" rel="nofollow">Chan P.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Halfar J.&option=202" target="_blank" rel="nofollow">Halfar J.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Norley C. J. D.&option=202" target="_blank" rel="nofollow">Norley C. J. D.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Pollmann S. I.&option=202" target="_blank" rel="nofollow">Pollmann S. I.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Adey W.&option=202" target="_blank" rel="nofollow">Adey W.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Holdsworth D. W.&option=202" target="_blank" rel="nofollow">Holdsworth D. W.;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Department of Chemical and Physical SciencesUniversity of TorontoToronto Ontario Canada;</p> <p>Department of Chemical and Physical SciencesUniversity of TorontoToronto Ontario Canada;</p> <p>Robarts Research Institute University of Western OntarioOntario Canada;</p> <p>Robarts Research Institute University of Western OntarioOntario Canada;</p> <p>Department of BotanySmithsonian National Museum of Natural HistoryWashington DC USA;</p> <p>Robarts Research Institute University of Western OntarioOntario Canada;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/163.html" title="地球物理学">地球物理学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=micro‐computed tomography&option=203" rel="nofollow">micro‐computed tomography;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=paleoclimate proxy&option=203" rel="nofollow">paleoclimate proxy;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=ocean acidification&option=203" rel="nofollow">ocean acidification;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=skeletal density&option=203" rel="nofollow">skeletal density;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=calcification rate&option=203" rel="nofollow">calcification rate;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=coralline algae&option=203" rel="nofollow">coralline algae;</a> </p> <div class="translation"> 机译：微计算断层扫描;古古典代理;海洋酸化;骨骼密度;钙化率;珊瑚藻类; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704025952575.html">Micro-computed tomography: Applications for high-resolution skeletal density determinations: An example using annually banded crustose coralline algae</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Chan P.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Chan P.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Halfar J.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Halfar J.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Norley C. J. D.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Norley C. J. D.,</a> <a href="/journal-foreign-36246/" target="_blank" rel="nofollow" class="tuijian_authcolor">Journal of Turbulence .</a> <span>2017</span><span>,第9期</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：微计算机断层扫描：高分辨率骨骼密度测定的应用：使用每年带状甲壳素藻类的示例</span> </p> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/07040563305.html">Relative roles of endolithic algae and carbonate chemistry variability in the skeletal dissolution of crustose coralline algae</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=C. Reyes-Nivia&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">C. Reyes-Nivia,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=G. 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Adey&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Walter H. Adey,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Andreas Kronz&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Andreas Kronz,</a> <span>2013</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：百年年分辨率记录从地壳珊瑚线藻类代理中存档了北极海冰下降量</span> </p> </li> <li> <div> <b>7. </b><a class="enjiyixqcontent" href="/open-access_resources_thesis/0100040881262.html">Relative roles of endolithic algae and carbonate chemistry variability in the skeletal dissolution of crustose coralline algae</a> <b>[O] </b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Reyes-Nivia C.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Reyes-Nivia C.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Diaz-Pulido Guillermo&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Diaz-Pulido Guillermo,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Dove S.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Dove S. </a> <span>2014</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：内生藻类和碳酸盐化学变异性在地壳珊瑚藻类骨骼溶解中的相对作用</span> </p> </li> <li> <div> <b>8. </b><a class="enjiyixqcontent" href="/ntis-science-report_pb_thesis/02071110055.html">Methods for Monitoring Corals and Crustose Coralline Algae to Quantify In-Situ Calcification Rates.</a> <b>[R] </b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Morrison, J. M.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Morrison, J. M.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext= Kuffner, I. B.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> Kuffner, I. B.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext= Hickey, T. D.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> Hickey, T. 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