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听了得到app,卓克.科技参考2 274 | 衰老:我们会在34岁、60岁、78岁突然老去
https://www.dedao.cn/course/article?id=5Mr9mzb36pP4JL5d3PXkWqB2EYNegL
衰老的进程并不是均匀的,而是有 3 个时间节点——34 岁、60 岁、78 岁。
这 3 个时间节点对大部分人来说都是如此。大家都是在这 3 个年龄节点,在可测的指标上突然大幅衰老。而在其他时间段,衰老的进程要慢得
Tony 团队把年轻小鼠的血液输送给老年小鼠后,很明显的改善了老年小鼠的大脑功能。这就提示 Tony 团队,血液中肯定存在着很多与年龄相关的物质,如果把这些物质的浓度、种类、配比准确测量出来,说不定就能用它来评估衰老程度。所以从 2015 年开始,他们就把注意力集中在血浆蛋白上。
血浆蛋白是个统称,可测的蛋白质有几千种,有的负责维持渗透压,有的负责稳定 pH 值,有的是免疫蛋白,有的起催化作用,有的起运输作用,有的起凝血作用等等。每升血液里的血浆蛋白大概有 70 多克。
Tony 团队一共召集了 4263 个年龄从 18-95 岁的人,测量了他们体内 2925 种血浆蛋白,然后在海量数据里筛选出与年龄变化高度相关的蛋白质,就得出了以上的结论。
相关的博客文章
blog posts on this study
https://med.stanford.edu/news/all-news/2019/12/stanford-scientists-reliably-predict-peoples-age-by-measuring-pr.html
https://surfaceyourrealself.com/2019/12/24/a-blood-plasma-protein-aging-clock/
https://joshmitteldorf.scienceblog.com/2019/12/23/new-aging-clock-based-on-proteins-in-the-blood/
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https://www.giantpandaglobal.com/zoos/
https://news.cgtn.com/news/3d3d674e7741444f33457a6333566d54/img/f22a4660819043c196f47a33185288c4/f22a4660819043c196f47a33185288c4.jpg
https://www.giantpandaglobal.com/zoos/
https://www.giantpandaglobal.com/category/zoo/dalian-forest-zoo/
DALIAN FOREST ZOO OPENS PANDA EXHIBIT
https://www.dl.gov.cn/col/col3042/index.html
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- 作者: kaiwu
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Data Sets
Chapter 2: Path Models and Analysis
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MathHmwk.txt (space-delimited file)
Chapter 5: Models with Multiple Time Periods
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volke.dat (comma-delimited file)
Chapter 6: Models with Dichotomous Indicator Variables
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gss2000.dat (space-delimited file)
Chapter 7: Models with Missing Data
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Eating Attitudes data (space-delimited file)
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Data from simulation (All data are in comma-delimited files)
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Given multiple files in a directory having different names, the task is to rename all those files
rename files, replace, find, os, for loop
# Python progaram to rename all file
# names in your directory# https://www.geeksforgeeks.org/rename-all-file-names-in-your-directory-using-python/# https://stackoverflow.com/questions/62668176/how-to-replace-characters-and-rename-multiple-filesimport osimport reos.chdir('D:\\chapters')print(os.getcwd())
for count, f in enumerate(os.listdir()):f_name, f_ext = os.path.splitext(f)# replace space with ""(remove spaces)new_name = f'{f_name.replace(" ", "")}{f_ext}'os.rename(f, new_name)
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1.Dissertations & Theses (Proquest)
Theses and Dissertations Collection
https://about.proquest.com/en/dissertations/
2.PolyU Electronic Theses (Hongkong Polytechnic University)
https://theses.lib.polyu.edu.hk/
3.Theses and Dissertations, Hospitality and Tourism Management (Virginia Tech)
https://vtechworks.lib.vt.edu/handle/10919/82827
4.electronic theses and dissertations(ETD)
5.Dissertation examples
https://library.leeds.ac.uk/dissertation-examples
Listed below are some of the best examples of research projects and dissertations from undergraduate and taught postgraduate students at the University of Leeds. We have not been able to gather examples from all schools. The module requirements for research projects may have changed since these examples were written. Refer to your module guidelines to make sure that you address all of the current assessment criteria. Some of the examples below are only available to access on campus.
Jung, E. (2021). Slow Tourism: A Means-End Approach to the Motivations of Slow Travelers [Doctoral Dissertation, The University of Tennessee]. https://trace.tennessee.edu/utk_graddiss/6696
Pulkkinen, T. (2020). “Being Able to Be Who I Truly Am, That Is the Most Freeing Feeling Ever”: Experiences of Travel Behavior by Transgender Individuals [Master Thesis, University of Eastern Finland]. https://erepo.uef.fi/handle/123456789/23680
Mitsche, N. (2016). Digital Destination Promotion: Understanding and Maximizing the Use of Digital and Cultural Assets to Enhance Tourists’ Decision Making and Destination Marketing Strategies [Doctoral Dissertation, University of Sunderland.]. https://sure.sunderland.ac.uk/id/eprint/7105/
Lo, S. T. (2012). The Production and Consumption of Online Travel Photography [Doctoral Dissertation, The Hong Kong Polytechnic University]. https://theses.lib.polyu.edu.hk/handle/200/6828
Han, J. Y. (2005). The Relationships of Perceived Risk to Personal Factors, Knowledge of Destination, and Travel Purchase Decisions in International Leisure Travel [Doctoral Dissertation, University Libraries, Virginia Polytechnic Institute and State University]. https://vtechworks.lib.vt.edu/handle/10919/27410