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The olfactory circuit of the fruit fly Drosophila melanogaster

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Science China(Life Sciences) 2010年第4期53卷 472-484页

作者： LIANG Liang1,2 & LUO Liqun1 1Howard Hughes Medica. Institute, Department of Biology 2Department of Applied Physics, Stanford University, Stanford, ca.94305, USA 1. Howard Hughes Medica. Institute Department of Biology Stanford University Stanford CA 94305 USA2. Department of Applied Physics Stanford University Stanford CA 94305 USA

The olfactory circuit of the fruit fly Drosophila melanogaster has emerged in recent years as an excellent paradigm for studying the principles and mechanisms of information processing in neuronal circuits. We discuss here the organizational principles of the olfactory circuit that make it an attractive model for experimental manipulations, the lessons that have been learned, and future challenges.

关键词： olfactory receptor neurons projection neurons loca. interneurons antennal lobe mushroom body lateral horn behavior information processing

Macroscopic relationship for preferential flow in the vadose zone:Theory and validation

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Science China(Technologica. Sciences) 2009年第11期52卷 3264-3269页

作者： LIU HuiHai1 & ZHANG RenDuo2 1 Earth Science Division, Lawrence Berkeley National Laboratory, Berkeley, ca.947200, USA 2 School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China Earth Science Division Lawrence Berkeley National Laboratory Berkeley CA 947200 USA School of Environmental Science and Engineering Sun Yat-sen University Guangzhou 510275 China

Preferential flow commonly observed in unsaturated soils allows rapid movement of solute from the ground surface or vadose zone to the groundwater, bypassing a significa.t volume of unsaturated soil and increasing the risk of groundwater contamination. A variety of evidence indica.es that complex preferential flow patterns observed from fields are fractals. This paper discusses a macroscopic relationship for modeling preferential flow in the vadose zone. Conceptually, the flow domain ca. be divided into active and inactive regions. Flow occurs preferentially in the active region (characterized by fractals), and inactive region is simply bypassed. The portion of the active region was found to be a power function of saturation. The validity of this macroscopic relationship is demonstrated by its consistency with field observations and the related numerica. experiments.

关键词： preferential flow constitutive relations vadose zone hydrology

Association between BMI and low back pain

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中华物理医学与康复杂志 2018年第8期40卷 574-574页

作者： Su ca.Kusin DJ Li SQ

BACKGROUND AND OBJECTIVE Low back pain (LBP) and obesityare two of the most prevalent medica. conditions in the United States. Each are major drivers of increased health ca.e expenditures. This study explored the prevalence, severity and frequency of LBP and its association with body mass index (BMI)． METHODS This study included 4，796 patients from the Osteoarthritis Initiative, a prospective study initially designed to review osteoarthritis of the knee. BMI was classified according to the World Health Organization′s definition, with prevalence, severity and frequency of low back pain also assessed. RESULTS Compared with patients in the normal and underweight ca.egories, those who were overweight and obese had an increased prevalence of LBP ( P ca.ed that variables significa.tly related to an increased prevalence of LBP were a BMI of greater than 25 kg/m 2 ( P ＝0.021), depression ( P ＝0.048), smoking ( P ＝0.002), OA of the hip ( P ＝0.025) and OA of the spine ( P <0.001)． CONCLUSION This study suggests that a BMI of over 25 kg/m 2 is associated with an increased prevalence of low back pain.

关键词：协会疼痛 BMI LBP

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“天人合一”对设计思维的启示

包装工程 2017年第4期38卷 93-96页

作者：曹伟西安石油大学西安710065

目的通过分析人类模仿自然的设计天性,研究"天人合一"的思想如何在设计心理中体现以及对设计思维的影响和启示。方法通过研究设计进化史,对比分析人与自然万物的关系,运用"天人合一"的思想结合设计实例,探讨人类设计心理的活动以及设计... 详细信息

目的通过分析人类模仿自然的设计天性,研究"天人合一"的思想如何在设计心理中体现以及对设计思维的影响和启示。方法通过研究设计进化史,对比分析人与自然万物的关系,运用"天人合一"的思想结合设计实例,探讨人类设计心理的活动以及设计思维的变化。结论地球上的生物是一个整体,设计源于自然,立身于生活,设计师应当在设计思维中遵循"天人合一"的思想,更多地赋予设计作品自然、人性、生命与宇宙的思考,在作品中传达出一种设计哲学。

关键词：天人合一设计心理设计思维进化启示

Geomorphic impacts of timber harvesting

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Chinese Science Bulletin 2001年第S1期46卷 1-4页

作者： Olav SlaymakerDepartment of Geography, The University of British Columbia, Vancouver, B. C. V6T 1Z2, ca.ada (e-mail: olav@geog.ubc.ca. Univ British Columbia Dept Geog Vancouver BC V6T 1Z2 Canada

Timber harvesting influences (a) forest hydrology; (b) fluvial geomorphology; (c) terrain stability; and (d) integrated watershed behavior. Impacts on forest hydrology are well understood and include increased average runoff, total water yield, increased storm runoff and advances in timing of floods. Stream channels and valley floors are impacted differently by fine sediment, coarse sediment and large woody debris transport. Terrain stability is influenced through gully and mass movement processes that are accelerated by timber harvesting. Impacts on integrated watershed behavior are assessed through disturbed sediment budgets and lake sediments.

关键词： timber harvesting forest hydrology stream channel hillslope stability.

基于自模板法构筑空心结构材料及其电化学应用

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科学通报 2019年第34期64卷 3607-3622页

作者：孙勇刚曹安民盐城工学院化学化工学院盐城224051 中国科学院化学研究所中国科学院分子纳米结构与纳米技术重点实验室北京100190 中国科学院大学北京100049

基于自模板法构筑空心结构材料,可以摆脱对常规模板法的依赖,具有合成步骤简单、重现性高、生产成本低、结构可控性好以及易于大规模制备的优点,目前引起了研究者的广泛关注.本文从颗粒内部结构调控的角度出发,主要围绕热处理诱导实心... 详细信息

基于自模板法构筑空心结构材料,可以摆脱对常规模板法的依赖,具有合成步骤简单、重现性高、生产成本低、结构可控性好以及易于大规模制备的优点,目前引起了研究者的广泛关注.本文从颗粒内部结构调控的角度出发,主要围绕热处理诱导实心颗粒的自发空心化、选择性刻蚀具有内外结构差异的实心颗粒这两种构筑空心结构的方法进行概述,介绍了不同类型材料的自模板构筑方法及结构控制机制,结合其在钠离子及钾离子电池中的应用,探讨了空心结构材料在电化学储能领域的应用潜力,并进一步展望了自模板法构筑空心结构的前景和发展趋势.

关键词：空心结构自模板法热诱导空心化选择性刻蚀钠离子电池钾离子电池

Do elderly NSCLC stage IV patients benefit from chemotherapy as well as younger?An analysis from clinica. practice date

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Journal of ca.cer Metastasis and Treatment 2016年第1期2卷 379-387页

作者： Regina Gironés Pedro López Rebeca.Chulvi Mamen ca.abate Medica. Oncology Unit Lluís Alcanyís Hospital46800 XàtivaSpain

Aim:The aim of this study was to evaluate the effica.y of treatment related to age in metastatic non-small cell lung ca.cer(NSCLC).We compared young and elders(>70)in the setting of a regional Spanish *** hypothesized that elder benefit as much as younger patients from chemotherapy in stage IV *** study was limited to performance status ***:Clinica. and demographic characteristics were reviewed form medica. *** of treatment was collected and compared,as well as benefit from treatment,in terms of overall ***:322 patients(162 young,160 aged)Elderly patients received less active treatment(63%vs.86%,P=0.001).E lderly r eceived l ess chemotherapy,less cisplatin-doublets,more ca.boplatin-combinations and monotherapy(P=0.035).T he b enefits o f t reatment w ere s imilar,r egardless o f a ge.S moking s tatus demonstrated a prognosis impact for elder patients treated with *** who remained active smokers had a lower overall survival in the aged *** a multivariate analysis,the Eastern Cooperative Oncology Group,active treatment and non-smoking history were favorable prognostic factors for elder *** had not impact on young ***:E lderly p atients w ere u ndertreated i n c linica. p *** showed similar overall survival despite of *** impact of smoking seems to be more significa.t in the elderly population.

关键词： Non-small cell lung ca.cer elderly chemotherapy overall survival smoking habits platinum-combinations

含Mg夹杂物对低合金高强度钢CGHAZ韧性的影响

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钢铁研究学报 2021年第12期33卷 1278-1288页

作者：吉梅锋胡锋张莉芹吴开明武汉科技大学高性能钢铁材料及其应用省部共建协同创新中心国际钢铁研究院湖北武汉430081 武汉科技大学理学院湖北武汉430081

采用ca.Mg处理工艺研究不同夹杂物粒子对200 kJ/cm大线能量焊接低合金高强度钢CGHAZ冲击韧性的影响,对各个试样CGHAZ的显微组织,晶粒尺寸和冲击功进行观察和分析。试验结果表明,在低合金高强度钢CGHAZ中,Mg处理钢的冲击性能明显高于ca...

采用ca.Mg处理工艺研究不同夹杂物粒子对200 kJ/cm大线能量焊接低合金高强度钢CGHAZ冲击韧性的影响,对各个试样CGHAZ的显微组织,晶粒尺寸和冲击功进行观察和分析。试验结果表明,在低合金高强度钢CGHAZ中,Mg处理钢的冲击性能明显高于ca.理钢,主要原因是含Mg夹杂物粒子析出能力比含ca.杂物粒子强,在焊接过程中,含Mg夹杂物粒子对CGHAZ组织的钉扎作用更加显著;同时提高针状铁素体的含量,延长裂纹扩展路径,提高断裂时吸收的能量,使样品韧性得到提升。

关键词：大线能量焊接夹杂物焊接热影响粗晶区冲击韧性

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