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自生酸酸液体系研究进展及展望

特种油气藏 2022年第6期29卷 1-10页

作者：李小刚秦杨朱静怡刘紫微金心岫高晨轩靳文博杜博迪西南石油大学油气藏地质及开发国家重点实验室四川成都610500 中国石油长庆油田分公司陕西西安710018 西南石油大学四川成都610500 中国石油塔里木油田分公司新疆库尔勒841000 中国石油西南油气田分公司四川成都610051

自生酸酸化技术是高温(超高温)低渗致密油气藏主要增产措施之一。对自生酸酸化技术研究进展进行了综合分析,介绍了自生酸的酸岩反应特性,自生酸的主要生酸机理,以及自生有机酸、自生盐酸、自生氢氟酸和复合类自生酸的研究进展,分析了自... 详细信息

自生酸酸化技术是高温(超高温)低渗致密油气藏主要增产措施之一。对自生酸酸化技术研究进展进行了综合分析,介绍了自生酸的酸岩反应特性,自生酸的主要生酸机理,以及自生有机酸、自生盐酸、自生氢氟酸和复合类自生酸的研究进展,分析了自生酸类型、供氢能力、成本、缓速能力、缓蚀能力等因素对酸化工作液现场应用的影响,并对自生酸在酸化作业中的应用进行了展望。该研究可为自生酸酸化技术的发展和推广应用提供参考。

关键词：自生酸缓速酸深部酸化酸岩反应生酸机理

Spatial patterns of Picea crassifolia driven by environmental heterogeneity and intraspecifi c interactions

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Journal of Forestry Research 2023年第4期34卷 949-962页

作者： Changxing Zhao Weijun Zhao Ming jin Jiqiang Zhou Feng Ta Lei Wang wenbo Mou Longju Lei jinrong Liu Junlin Du Xinglin Zhang State Key Laboratory of Grassland Agro-Ecosystems College of Pastoral Agriculture Scienceand TechnologyLanzhou UniversityLanzhou 730000People’s Republic of China Academy of Water Resources Conservation Forests in Qilian Mountains of Gansu Province Zhangye 734000People’s Republic of China Gansu Nonferrous Engineering Survey Design and Research InstituteLanzhou 730000People’s Republic of China State Key Laboratory of Grassland Agro-Ecosystems School of Life ScienceLanzhou UniversityLanzhou 730000People’s Republic of China Hexi University Zhangye 734000People’s Republic of China Gansu Academy of Eco-Environmental Sciences Lanzhou 730030People’s Republic of China

Research on the spatial patterns of tree populations is critical for understanding the structure and dynamic processes of ***,little is known about how the underlying drivers shape these patterns and species interactions in forest *** this study,spatial point pattern analysis investigated the combined eff ects of intraspecifi c interactions and environmental heterogeneity on the spatial structure and internal maintenance mechanisms of Picea crassifolia in the Qilian Mountain National Nature Reserve,*** were obtained from a 10.2-ha dynamic monitoring plot(DMP)and sixteen 0.04-ha elevation gradient plots(EGPs).Under complete spatial randomness,both mature trees and saplings in the DMP demonstratedlarge-scale aggregation with negative *** EGPs,saplings were clustered in small mesoscales,mature trees were randomly distributed,and the interactions of saplingstrees at all elevations were not *** eliminating the interference of environmental heterogeneity through the inhomogeneous Poisson process,saplings in the DMP and EGPs were clustered in small scales and trees randomly *** c associations were negatively correlated,in the DMP and at low elevations,and no correlations in high elevations of *** the vertical scale,saplings showed a small-scale aggregation pattern with increase in elevation,and the aggregation degree fi rst decreased and then *** interactions of saplings-trees and saplings–saplings showed inhibitions at small scales,with the degree of inhibition gradually *** patterns and associations of adults–adults did not change *** results revealed that intraspecifi c interactions and environmental heterogeneity regulated the spatial patterns of *** at small and large scales,*** heterogeneity might be the most decisive factor aff ecting the spatial patterns of saplings,while trees were more aff ected by intraspecifi c intera

关键词： Picea crassifolia Spatial point pattern analysis Intraspecifi c interactions Environmental heterogeneity

基于循环数据采集的天气监测风向传感器校准技术研究

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自动化应用 2024年第17期65卷 165-167,178页

作者：沈天舒金元尚郭浩张瑜孙文博王雪松吉林省气象探测保障中心吉林长春130062

针对风向传感器校准误差问题,提出一种风向传感器校准方法。该方法首先对传感器系统循环数据进行采集与预处理,然后引入一种传感器误差校准方法,进而实现传感器的校准。选取5种风速,比较不同校准方法的实际应用效果,当风速为30 m/s时,... 详细信息

针对风向传感器校准误差问题,提出一种风向传感器校准方法。该方法首先对传感器系统循环数据进行采集与预处理,然后引入一种传感器误差校准方法,进而实现传感器的校准。选取5种风速,比较不同校准方法的实际应用效果,当风速为30 m/s时,研究技术的最大测量误差为0.481,明显小于传统测量方法。此外,通过比较风速角监测结果,发现研究技术监测结果更接近实际结果,表现更好。由此可见,研究技术具有出色的应用效果,可为气象部门的管理与设备维护提供重要技术支持。

关键词：循环数据采集风向传感器预处理校准

低透气性煤层分段压裂酸化复合增透技术研究及应用

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煤 2024年第7期33卷 18-21页

作者：吕文波马金魁雷创飞魏达翔靳鹏乌海能源有限责任公司骆驼山煤矿内蒙古乌海016000 中煤科工集团沈阳研究院有限公司辽宁抚顺113122 煤矿安全技术国家重点实验室辽宁抚顺113122

针对低透气性煤层瓦斯抽采钻孔抽采效果差的问题,基于分段水力压裂和煤层酸化增透机制,提出分段压裂酸化压注复合增透技术。现场试验表明:分段压裂酸化复合增透技术流量平均值是原有水力压裂技术的1.28倍,是原有定向长钻孔的5.43倍,分... 详细信息

针对低透气性煤层瓦斯抽采钻孔抽采效果差的问题,基于分段水力压裂和煤层酸化增透机制,提出分段压裂酸化压注复合增透技术。现场试验表明:分段压裂酸化复合增透技术流量平均值是原有水力压裂技术的1.28倍,是原有定向长钻孔的5.43倍,分段压裂酸化复合增透技术流量衰减与普通水力压裂技术相比降低了36.1%.试验结果表明,分段压裂酸化技术施工工艺快速简便,增透范围大,减缓了瓦斯衰减速度,保障了矿井安全高效生产。

关键词：低透气煤层分段压裂酸化酸化增渗液瓦斯抽采

Melt-and air-processed selenium thin-film solar cells

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Science China Chemistry 2022年第11期65卷 2197-2204页

作者： wenbo Lu Zongbao Li Mingjie Feng Hui-Juan Yan Bin Yan Liyan Hu Xing Zhang Shunchang Liu jin-Song Hu Ding-Jiang Xue Beijing National Laboratory for Molecular Sciences(BNLMS) CAS Key Laboratory of Molecular Nanostructure and NanotechnologyInstitute of ChemistryChinese Academy of SciencesBeijing100190China School of Material and Chemical Engineering Tongren UniversityTongren 554300China National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou UniversityZhengzhou 450002China University of Chinese Academy of Sciences Beijing 100049China

Elemental selenium(Se), as the world’s first but long-neglected photovoltaic material, has regained great interest recently in tandem solar cells as top cells due to its wide bandgap(~1.8 eV), simple, non-toxic and earth-abundant composition, and intrinsic environmental stability. In particular, Se possesses the lowest melting point of 217 °C among the photovoltaic absorbers reported so far, endowing Se with a unique advantage of film fabrication by blade coating the Se melt on substrate. However, the poor wettability of Se melt on widely-used photovoltaic functional layers such as TiO_(2) limits its melt processing. Here we introduce a wettability-modification strategy that decreases the contact angle of Se melt on substrate and improves the wettability by appropriately enhancing the heating temperature of molten Se while avoiding Se volatilization. We further reveal the mechanism of the inherent air stability of Se that originates from the high activation energy of oxygen chemisorption on Se(3.21 eV). This enables the realization of compact Se films through melt-based blade coating in ambient air. The resulting Se solar cells exhibit an efficiency of 3.5%. Unencapsulated devices show no efficiency loss after 1,000 h of storage under ambient conditions.

关键词： selenium thin film photovoltaic melt processing

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宁波城区绿化种植土改良与替代效果

农学学报 2024年第6期14卷 24-30页

作者：汪峰张挺余硕琦李文波朱诗君金树权宁波市农业科学研究院浙江宁波315040 宁波市特色农产品质量安全检测与控制重点实验室浙江宁波315040 宁波隆园园林工程有限公司浙江宁波315046 宁波市鄞州区园林绿化中心浙江宁波315192 宁波市政工程建设集团股份有限公司浙江宁波315012

为获取宁波城区公园淤泥质土壤低本高效的改良技术解决方案,利用城区公园设置分层改良小区试验,探明不同改良和替代方式对表层土(0~30 cm)和基层土(30~100 cm)理化性质的影响。结果表明:表层土用干化建筑渣土替代或利用园林废弃物堆肥... 详细信息

为获取宁波城区公园淤泥质土壤低本高效的改良技术解决方案,利用城区公园设置分层改良小区试验,探明不同改良和替代方式对表层土(0~30 cm)和基层土(30~100 cm)理化性质的影响。结果表明:表层土用干化建筑渣土替代或利用园林废弃物堆肥混合改良效果最佳,土壤理化指标(除pH外)在18~24个月内逐渐趋于稳定,且满足《绿化种植土壤》标准要求;园林废弃物堆肥改良基层土效果显著,其添加比例越高,土壤物理结构和肥力水平越好,土壤和园林废弃物堆肥体积比在6:1~6:2之间均能满足改良要求,随着时间增加,不同处理下土壤pH、有机质、全氮等逐渐趋同,土壤的容重和pH不断提高,但2年时间内改良效果能够得到保证。因此,在宁波城区可以利用园林废弃物堆肥改良建筑渣土用于绿化种植土,干化建筑渣土替代黄泥土作为表层种植土,实现废弃物资源利用。

关键词：绿化种植土园林废弃物堆肥土壤改良

Diverging destinies:changing trends of induced abortion in China

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China Population and Development Studies 2023年第1期7卷 63-94页

作者： Yongai jin wenbo Hu Center for Population and Development Studies Renmin University of ChinaRoom 608 Chongde West BuildingHaidian DistrictBeijing 100872China School of Sociology and Population Studies Renmin University of ChinaBeijingChina

In the era of the second demographic transition,“diverging destinies”theory states that women with the most economic opportunities often obtain gains while women with the least economic opportunities suffer from *** nationally represent-ative data from the 2017 China Fertility Survey,we attempted to examine if diverg-ing destinies theory can explain differences in the incidence of induced abortion among women with differing economic *** found that women with good economic opportunities(i.e.,well-educated and holding urban hukou)were more likely to have induced abortions between 1980 and 2010 and less likely to do so between 2015 and ***,younger cohorts were far more likely to have induced abortions at a younger age and before *** findings provide sup-portive evidence for diverging destinies in induced abortion scenarios in *** thus advocate that sexual and reproductive health policy making shows an overarch-ing concern for the interests of disadvantaged groups.

关键词： Induced abortion Diverging destinies China Socio-economic status Economic opportunities

优泌乐25联合达格列净对2型糖尿病患者血糖水平及胰岛素抵抗的影响

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今日药学 2024年第1期34卷 60-63页

作者：胡莎莎黎明周敏甘辉虎金连宁周文博新余市中医院江西新余338000

目的探究优泌乐25联合达格列净(DAPA)对2型糖尿病(T2DM)患者血糖水平及胰岛素抵抗的影响。方法选取2020年1月~2022年11月某院接收的88例T2DM患者,根据随机数字表法分为两组,即对照组(n=44)、观察组(n=44),均接受常规指导,对照组进行... 详细信息

目的探究优泌乐25联合达格列净(DAPA)对2型糖尿病(T2DM)患者血糖水平及胰岛素抵抗的影响。方法选取2020年1月~2022年11月某院接收的88例T2DM患者,根据随机数字表法分为两组,即对照组(n=44)、观察组(n=44),均接受常规指导,对照组进行优泌乐25治疗,观察组进行优泌乐25联合DAPA治疗,时间为3个月。治疗前、后,比较两组血糖水平[空腹血糖(FBG)、餐后2 h血糖(2 h PG)、糖化血红蛋白(HbAlc)]、胰岛素抵抗指数(HOMA-IR)、空腹胰岛素(FINS)值,并比较不良反应发生率。结果治疗后,两组FBG、2 h PG、HbAlc水平及HOMA-IR值均下降,FINS水平升高,且观察组变化更明显(P0.05)。结论优泌乐25联合DAPA治疗T2DM能够降低患者血糖水平,改善胰岛素抵抗,且不良反应少。

关键词： 2型糖尿病优泌乐25 达格列净血糖水平胰岛素抵抗

Effect of spatio-temporal coupling on ultrafast laser direct writing in glass

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Chinese Optics Letters 2019年第8期17卷 42-46页

作者： Qin Li wenbo Li Wei Chu Yuxiang Cao Wencheng Zhang Hongliang Ma Zuanming jin Ye Dai Department of Physics Shanghai University Shanghai 200444 China State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China

Spatio-temporal coupling characteristics of ultrafast laser pulses are quantitatively tailored. An asymmetric microstructure is induced in the focal volume when the laser scans perpendicularly to the direction of the spatial chirp in fused silica. The tilted direction reverses when adding a Dove prism into the light path. The sign of the pulse front tilt can be turned from positive to negative by changing the group delay dispersion by steps. We reveal that the tilted direction of a microstructure depends on spatial chirp, and the interplay between spatiotemporal chirp leads to the change of tilted angles.

关键词： characteristics pulses angles