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高速公路复拌就地热再生施工要点

山西建筑 2018年第22期44卷 145-147页

作者：白志刚山西路桥集团榆和高速公路有限公司山西左权032600

分别介绍了沥青路面重铺再生、表面再生和复拌再生的适用范围,以某高速公路采用的复拌热再生施工为例,总结了复拌就地热再生的技术优势和施工要点,可使得路面使用性能得到有效恢复或提升,且实现原路面旧料的全部回收利用,具有显著的经... 详细信息

分别介绍了沥青路面重铺再生、表面再生和复拌再生的适用范围,以某高速公路采用的复拌热再生施工为例,总结了复拌就地热再生的技术优势和施工要点,可使得路面使用性能得到有效恢复或提升,且实现原路面旧料的全部回收利用,具有显著的经济效益和社会效益,以期得到推广和应用。

关键词：热再生复拌旧料铣刨

GB/T 145—2001《中心孔》及GB/T4459.5—1999《机械制图中心孔表示法》介绍

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机械工业标准化与质量 2003年第11期 4-6页

作者：白志刚航天科技集团五一九厂

本文介绍了GB/T145—2001及GB/T4459.5—1999两项标准的主要内容,并着重介绍了中心孔的型式及尺寸,中心孔的表示法以及中心孔表示方法上新旧标准存在的主要差别。

关键词：中心孔机械制图表示法 GB/T145-2001 GB/T4459.5-1999 国家标准

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燃煤电厂输煤系统除尘措施探讨

能源研究与管理 2016年第4期 41-42,45页

作者：白志刚国核电力规划设计研究院北京100095

介绍了燃煤电厂输煤系统粉尘产生的主要原因及无动力除尘的工作原理;针对某燃煤电厂输煤系统采用无动力+微动力除尘方式,并与传统的机械除尘方式进行比较,不但改善了工作环境,还能减少运行费用,实现节能减排,具有较大的经济效益,值得推... 详细信息

介绍了燃煤电厂输煤系统粉尘产生的主要原因及无动力除尘的工作原理;针对某燃煤电厂输煤系统采用无动力+微动力除尘方式,并与传统的机械除尘方式进行比较,不但改善了工作环境,还能减少运行费用,实现节能减排,具有较大的经济效益,值得推广应用。

关键词：燃煤电厂输煤系统无动力除尘节能

我国农民专业合作社发展现状、存在问题及对策

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长江蔬菜 2012年第10期 71-74页

作者：白志刚河南安阳市植保植检站 455000

以农民专业合作社为抓手,不断提高农民组织化程度、生产规模化水平,是解决农产品产销难题的有效解决方法,为此,文章简要论述了壮大农民专业合作社的必要性,阐述了我国农民专业合作社的发展现状及其影响,分析了我国农民专业合作社发展中... 详细信息

以农民专业合作社为抓手,不断提高农民组织化程度、生产规模化水平,是解决农产品产销难题的有效解决方法,为此,文章简要论述了壮大农民专业合作社的必要性,阐述了我国农民专业合作社的发展现状及其影响,分析了我国农民专业合作社发展中存在的问题,并提出了进一步推动农民专业合作社发展的对策和措施。

关键词：农民专业合作社发展现状问题对策与措施

基于SWDC数字航摄仪的GPS辅助空中三角测量应用研究

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矿山测量 2010年第4期38卷 5-7页

作者：白志刚西安煤航信息产业有限公司测绘分公司陕西西安710054

简单介绍了国产SWDC数字航摄仪的情况,并进行基于精密单点定位的GPS辅助空中三角测量试验,分析并比较了空中三角测量方法的加密精度。结果表明,基于SWDC数字航摄仪的GPS辅助空中三角测量方法,能够满足我国现行航空摄影测量规范对航测生... 详细信息

简单介绍了国产SWDC数字航摄仪的情况,并进行基于精密单点定位的GPS辅助空中三角测量试验,分析并比较了空中三角测量方法的加密精度。结果表明,基于SWDC数字航摄仪的GPS辅助空中三角测量方法,能够满足我国现行航空摄影测量规范对航测生产的精度要求。

关键词： SWDC数字航摄仪 GPS辅助空中三角测量精度

Effect of stress-relief annealing on thermal fatigue cracks for die-casting die steels

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Journal of Iron and Steel Research International 2024年第5期31卷 1164-1176页

作者： Zhi-xiong bai Xiao-chun Wu School of Materials Science and Engineering Shanghai UniversityShanghai200444China

The effect of stress-relief annealing at different stages of thermal fatigue tests on crack growth was investigated using a self-built thermal cycle *** results showed that annealing could limit crack expansion *** reduced dislocation density and released the accumulation of residual *** addition,the strain accumulation in carbides was reduced by this *** was also found that double annealing was even more effective at inhibiting crack expansion compared to single stress-relief *** 1000 cycles,the maximum crack length was reduced by 31.1%and 45.2%for the samples after using the optimal single and double annealing processes,*** single stress-relief annealing,earlier annealing provides more benefit in delaying crack ***,effective double stress-relief annealing requires a suitable time interval between the annealing ***,after 800 cycles,surface hardness decreased significantly accompanied by an increase in the size and number of carbides,and cracks expanded predominantly along grain boundaries.

关键词： Thermal fatigue Steel Carbide Stress-relief annealing Dislocation Residual stress

AI enhances drug discovery and development

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National Science Review 2024年第3期11卷 52-54页

作者： Fang bai Shiliang Li Honglin Li Shanghai Institute for Advanced Immunochemical Studies and School of Life Science and Technology ShanghaiTech University Lingang Laboratory Innovation Center for AI and Drug Discovery East China Normal University

The advent of the third wave of artificial intelligence(AI) heralds a new era in drug discovery. AI-powered techniques can be characteristic of identifying features that are difficult for humans to interpret from big ...

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Nitrogen availability mediates the effects of roots and mycorrhizal fungi on soil organic carbon decomposition:A meta-analysis

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Pedosphere 2024年第2期34卷 289-296页

作者： Tongshuo bai Yunpeng QIU Shuijin HU Ecosystem Ecology Laboratory College of Resources and Environmental SciencesNanjing Agricultural UniversityNanjing 210095China Department of Entomology&Plant Pathology North Carolina State UniversityRaleigh NC 27695USA

Plant roots and their associated mycorrhizal fungi critically mediate the decomposition of soil organic carbon(C),but the general patterns of their impacts over a broad geographical range and the primary mediating factors remain *** on a synthesis of 596 paired observations from both field and greenhouse experiments,we found that living roots and/or mycorrhizal fungi increased organic C decomposition by 30.9%,but low soil nitrogen(N)availability(i.e.,high soil C:N ratio)critically mitigated this promotion *** addition,the positive effects of living roots and/or mycorrhizal fungi on organic C decomposition were higher under herbaceous and leguminous plants than under woody and non-leguminous plants,***,there was no significant difference between arbuscular mycorrhizal fungi and ectomycorrhizal fungi in their effects on organic C ***,roots and/or mycorrhizal fungi significantly enhanced the decomposition of leaf litter but not root *** findings advance our understanding of how roots and their symbiotic fungi modulate soil C dynamics in the rhizosphere or mycorrhizosphere and may help improve predictions of soil global C balance under a changing climate.

关键词： arbuscular mycorrhizal fungi ectomycorrhizal fungi leaf litter leguminous plant mycorhizosphere rhizosphere root litter soil C:N ratio

Grassland-type ecosystem stability in China differs under the influence of drought and wet events

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Journal of Arid Land 2024年第5期16卷 615-631页

作者： CAO Wenyu bai Jianjun YU Leshan School of Geography and Tourism Shaanxi Normal UniversityXi'an 710119China International Business School Shaanxi Normal UniversityXi'an 710119China

Ecological stability is a core issue in ecological research and holds significant implications forhumanity. The increased frequency and intensity of drought and wet climate events resulting from climatechange pose a major threat to global ecological stability. Variations in stability among different ecosystemshave been confirmed, but it remains unclear whether there are differences in stability within the sameterrestrial vegetation ecosystem under the influence of climate events in different directions and ***'s grassland ecosystem includes most grassland types and is a good choice for studying this *** study used the Standardized Precipitation Evapotranspiration Index-12 (SPEI-12) to identify thedirections and intensities of different types of climate events, and based on Normalized DifferenceVegetation Index (NDVI), calculated the resistance and resilience of different grassland types for 30consecutive years from 1990 to 2019 (resistance and resilience are important indicators to measurestability). Based on a traditional regression model, standardized methods were integrated to analyze theimpacts of the intensity and duration of drought and wet events on vegetation stability. The resultsshowed that meadow steppe exhibited the highest stability, while alpine steppe and desert steppe had thelowest overall stability. The stability of typical steppe, alpine meadow, temperate meadow was at anintermediate level. Regarding the impact of the duration and intensity of climate events on vegetationecosystem stability for the same grassland type, the resilience of desert steppe during drought was mainlyaffected by the duration. In contrast, the impact of intensity was not significant. However, alpine steppewas mainly affected by intensity in wet environments, and duration had no significant impact. Ourconclusions can provide decision support for the future grassland ecosystem governance.

关键词： grassland ecosystem stability resistance resilience different climate types drought climate event wet climate event