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Predicting the height of water-flow fractured zone during coal mining under the Xiaolangdi Reservoir

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Mining Science and Technology 2010年第3期20卷 434-438页

作者： XU Zhimin SUN Yajun DONG Qinghong zhang guowei LI Shi School of Resource and Geoscience China University of Mining&TechnologyXuzhou 221008China

It is very important to determine the extent of the fractured zone through which water can flow before coal mining under the water *** paper deals with methods to obtain information about overburden rock failure and the development of the fractured zone while coal mining in Xin'an Coal *** risk of water inrush in this mine is great because 40%of the mining area is under the Xiaolangdi *** simulations combined with geophysical methods were used in this paper to obtain the development law of the fractured zone under different mining *** comprehensive geophysical method described in this paper has been demonstrated to accurately predict the height of the water-flow fractured *** from the new model, which created from the results of numerical simulations and field measurements,were successfully used for making decisions in the Xin'an Coal Mine when mining under the Xiaolangdi *** scale experiments at the number 11201,14141 and 14191 working faces were safely carried *** achievements provide a successful background for the evaluation and application of coal mining under large reservoirs.

关键词： coal mining under reservoir water-flow fractured zone development law water inrush of mine predicting model

Coupling mechanism of roof and supporting wall in gob-side entry retaining in fully-mechanized mining with gangue backfilling

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Mining Science and Technology 2011年第6期21卷 829-833页

作者： Ma zhanguo Gong Peng Fan Jinquan Geng Minmin zhang guowei State Key Laboratory of Geomechanics ＆ Deep Underground Engineering School of Mechanics ＆ Civil Engineering China University of Mining ＆ Technology Xuzhou 221008 China

We analyzed the deformation characteristics of overlying stratum in backfilling with fully-mechanized and retaining roadways along the gob area coal mining technology, and established a mechanical model for the roof key stratum of retaining roadways along gob under the conditions of backfilling and fully- mechanized coal mining technology. Using Winkler elastic foundation theory, we analyzed a part of the key stratum under the action of elastic foundation coupling problem, and derived deflection analyt- ical expressions. Combined with specific conditions, we obtained the deflection curves for the roof key stratum of retaining roadways along gob under the conditions of backfilling and fully-mechanized coal mining technology. On this basis, we adopted the Coulomb's earth pressure theory to solve the problem of lateral pressure of the gangue filling area on the supporting wall beside the roadway and to provide the theoretical basis for reasonable selection of the distance between gangue concrete wall and roof and fur- ther discussion on the supporting stability of roadway.

关键词： Elastic foundation Coal mining with gangue backfilling Gob-side entry retaining Key stratum

自拟水陆二仙丹联合吗替麦考酚酯治疗儿童难治性肾病综合征临床观察

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光明中医 2024年第5期39卷 896-899页

作者：齐莎莎孟凡威张国伟张旭亚河南大学第一附属医院儿科河南开封475001

目的分析水陆二仙丹联合吗替麦考酚酯治疗儿童难治性肾病综合征(RNS)的疗效。方法选取脾肾阳虚型儿童RNS患者80例,按照随机数字表法分为2组,对照组40例在诱导尿蛋白转阴后叠加吗替麦考酚酯维持治疗,研究组40例在对照组基础上加用水陆... 详细信息

目的分析水陆二仙丹联合吗替麦考酚酯治疗儿童难治性肾病综合征(RNS)的疗效。方法选取脾肾阳虚型儿童RNS患者80例,按照随机数字表法分为2组,对照组40例在诱导尿蛋白转阴后叠加吗替麦考酚酯维持治疗,研究组40例在对照组基础上加用水陆二仙丹。比较2组临床疗效、中医证候疗效、中医症状积分,并检测治疗前后的肾功能、血脂及炎症指标。结果研究组临床疗效、中医证候疗效优于对照组(P<0.05)。治疗后,2组中医症状积分、血肌酐、尿素氮、24 h-UTP、TC、TG、IL-6、IL-17、TNF-α低于治疗前(P<0.05),且研究组低于对照组(P<0.05)。治疗后,2组的白蛋白高于治疗前(P<0.05),且研究组高于对照组(P<0.05)。结论水陆二仙丹联合吗替麦考酚酯治疗脾肾阳虚型儿童RNS可提高疗效,改善肾功能与血脂紊乱,减轻炎症反应。

关键词：水肿难治性肾病综合征儿童水陆二仙丹吗替麦考酚酯

Positive Solutions of Fourth-Order Equations under Nonlocal Boundary Value Conditions of Sturm-Liouville Type

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Journal of Mathematical Research with Applications 2023年第1期43卷 91-100页

作者： Chunlei SONG Wei CHEN guowei zhang Department of Mathematics Northeastern University

In this paper, we study the fourth-order problem with the first and second derivatives in nonlinearity under nonlocal boundary value conditions of Sturm-Liouville type involving Stieltjes integrals. Some inequality conditions on nonlinearity are presented that guarantee the existence of positive solutions to the problem by the theory of fixed point index on a special cone. Some examples are provided to support the main results under mixed boundary conditions containing multi-point with sign-changing coefficients and integral with sign-changing kernel.

关键词： positive solution fixed point index cone

梅花针叩刺联合3M物理疗法治疗颞下颌关节紊乱的临床观察

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中国现代医生 2024年第23期62卷 12-15页

作者：蒋旭坚章国伟陈双钱程志清浙江中医药大学附属温州市中医院康复治疗部浙江温州325000 浙江中医药大学附属温州市中医院康复科浙江温州325000

目的探讨梅花针叩刺联合3M物理疗法治疗颞下颌关节紊乱病(temporomandibular joint disorders,TMD)的疗效。方法选取2022年1月至2022年12月笔者医院收治的TMD患者60例,采用随机数字表法分为观察组和对照组,每组30例。对照组予以3M物理... 详细信息

目的探讨梅花针叩刺联合3M物理疗法治疗颞下颌关节紊乱病(temporomandibular joint disorders,TMD)的疗效。方法选取2022年1月至2022年12月笔者医院收治的TMD患者60例,采用随机数字表法分为观察组和对照组,每组30例。对照组予以3M物理疗法治疗,观察组行梅花针叩刺联合3M物理疗法治疗。比较两组颞下颌功能限制量表(jaw functional,limitation scale,JFLS)、疼痛视觉模拟评分(visual analogue scale,VAS)、最大主动开口度(maximum active mouth opening,MMO)、咬肌在下颌姿势位和紧咬棉棒测试下表面肌电图均方根值(root mean square,RMS)变化。结果治疗4周后,观察组JFLS、VAS均低于对照组,MMO高于对照组,差异有统计学意义(P<0.05)。治疗4周后,观察组咬肌在下颌姿势的RMS值降低,在紧咬棉棒测试中的RMS值提高,肌肉募集能力显著改善,且改善程度明显优于对照组,差异均有统计学意义(P<0.05)。结论梅花针叩刺联合3M物理疗法可明显改善TMD患者的疼痛、最大张口度及下颌功能,效果确切。

关键词：梅花针叩刺颞下颌关节紊乱物理疗法表面肌电图

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低冗余特征的轻量级物流包裹检测模型

佳木斯大学学报（自然科学版） 2024年第3期42卷 98-102页

作者：汤虎林张国伟汤毓桐王力厦门理工学院机械与汽车工程学院福建厦门361021 顺丰科技有限公司研发部广东深圳518000

鉴于目前物流包裹目标检测模型在设备资源、检测精度和速度方面存在限制问题,提出了一种名为GSYOLO的低冗余特征的轻量级目标检测网络模型,用于快速检测物流包裹类型。提出了称为GSBlock的轻量级特征提取模块作为骨干网络,从输入图像中... 详细信息

鉴于目前物流包裹目标检测模型在设备资源、检测精度和速度方面存在限制问题,提出了一种名为GSYOLO的低冗余特征的轻量级目标检测网络模型,用于快速检测物流包裹类型。提出了称为GSBlock的轻量级特征提取模块作为骨干网络,从输入图像中提取代表性特征,在保持高精度的同时,对模型进行了相应的瘦身处理,加入多种轻量化模块和无参数注意力机制,显著减少了骨干网的参数和浮点运算量,从而实现了快速推理和低功耗。通过使用自建物流包裹数据集进行对比实验,结果显示,与先进的检测模型YOLOv8s相比,GSYOLO模型的平均精度(mAP)达到了98.6%,模型参数减少了94.75%,FLOPs减少了96%。GSYOLO模型参数和FLOPs显著减少,同时检测精度更高,尤其适用于计算资源受限的物流包裹检测场景。

关键词：物流包裹检测轻量化 YOLO 低冗余特征提取特征融合

Granitoid emplacement during syn-convergent transtension:An example from the Huamenlou pluton in North Qinling,central China

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Geoscience Frontiers 2018年第1期9卷 191-205页

作者： Yang Li Wentian Liang guowei zhang Yazhou Ran Qi Shen Jingli Wang Chunsheng Jin State Key Laboratory of Continental Dynamics Northwest UniversityXi’an 710069China Collaborative Innovation Centre of Continental Tectonics Northwest UniversityXi’an 710069China Earthquake Administration of Shaanxi Province Xi’an 710068China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China

The Huamenlou pluton,is an elongated granite intrusion with high aspect ratio,emplaced within the southern margin of the North Qinling(central China).Here we investigate this pluton through multiple techniques including the fabric study,microstructural observation and zircon *** zircon U-Pb data confirm that the granite crystallized at ca.462 Ma which is consistent with the ages of other linear plutons in North *** observations of the Huamenlou granites illustrate that the pluton has undergone superimposed deformation during its emplacement,from magmatic to hightemperature solid state *** internal fabric obtained by anisotropy of magnetic susceptibility(AMS)and shape preferred orientation(SPO)show similar *** fabrics are relatively concordant and generally vary from NE-SW to NEE-SWW which are roughly oblique to the trend of the pluton elongation and the regional ***,scalar parameters reflect two completely different strain regimes for the pluton and its host rocks,i.e.,the fabrics within host rocks are mainly oblate while the central part of the intrusion displays mainly prolate *** is inferred that the structural pattern recorded in this pluton was caused by local dextral transtension in consequence of oblique convergence between the South and North China *** propose that the local transtension in convergence setting probably evolved from vertical extrusion tectonics that provided room for the magma emplacement and imparted prolate fabrics in the Huamenlou pluton.

关键词： Zircon U-Pb dating Magnetic fabric Shape preferred orientation Linear pluton Qinling Orogen

基于主成分分析和聚类分析的李子果实品质综合评价

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食品工业科技 2024年第8期45卷 293-300页

作者：李可林籽汐刘佳廖茂雯袁怀瑜梁钰梅潘翠萍郭南滨朱永清张国薇李华佳四川省农业科学院农产品加工研究所四川成都610000 四川省农业科学院园艺研究所四川成都610000 四川省葡萄酒与果酒行业协会四川成都610000

为了解不同品种李子的品质特性,本文选取12个品种李子作为研究对象,分别从外观、理化及糖酸组成等方面对果实品质进行了对比分析,同时采用主成分分析和聚类分析对李子品质性状进行综合评价。结果表明,不同品种李子外观、理化和糖酸组成... 详细信息

为了解不同品种李子的品质特性,本文选取12个品种李子作为研究对象,分别从外观、理化及糖酸组成等方面对果实品质进行了对比分析,同时采用主成分分析和聚类分析对李子品质性状进行综合评价。结果表明,不同品种李子外观、理化和糖酸组成等指标均表现出丰富的多样性。糖酸组成、色泽、单果重、果实密度和果形指数等是评价李子综合品质的关键性指标。12个品种中‘紫皇’(ZH)‘圣雪珀’(SXP)‘爱丽丝’(ALS)‘香李’(XL)‘香甜李’(XTL)5个品种综合评分为正值,品质较好。其中,ZH和SXP品质特征为出汁率、可溶性固形物、总糖含量及色泽品质高;ALS品质特征为总糖、总甜度、甜酸比和糖酸比最高;XL和XTL品质特征为可溶性固形物含量、糖酸比、甜酸比高,但出汁率低。该研究结果可作为不同用途李子品种筛选的重要参考依据。

关键词：李子品质主成分分析聚类分析综合评价

维普期刊数据库博看期刊

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采用近红外光谱法无损测量樱桃品质的研究

中国农学通报 2024年第16期40卷 150-155页

作者：刘佳李洪雯陈丽娟王东张国薇四川省农业科学院园艺研究所成都610066 农业农村部西南地区园艺作物生物学与种质创制重点实验室成都610066

以樱桃常见品种‘雷尼尔’、‘布鲁克斯’、‘雷吉纳’、‘美早’为试材,采用近红外光谱(NIR)对可溶性固形物含量、干物质含量、果皮颜色和果实硬度4个质量指标进行无损测量,开发预测性NIR回归模型,并使用该模型测量‘雷尼尔’樱桃从果... 详细信息

以樱桃常见品种‘雷尼尔’、‘布鲁克斯’、‘雷吉纳’、‘美早’为试材,采用近红外光谱(NIR)对可溶性固形物含量、干物质含量、果皮颜色和果实硬度4个质量指标进行无损测量,开发预测性NIR回归模型,并使用该模型测量‘雷尼尔’樱桃从果实开始着色到完全成熟阶段4个质量指标变化。结果表明,建立的可溶性固形物含量、干物质含量、果皮颜色和果实硬度模型的线性回归决定系数(R^(2))值分别为0.87、0.97、0.77、0.76。模型线性系数(R2)越接近1拟合效果越好,模型的拟合程度越高。R^(2)值均大于0.7,说明模型能够达到性能预期。可溶性固形物和干物质模型进行定量测定的准确性高于果皮颜色和果实硬度模型。樱桃果实成熟阶段,可溶性固形物与干物质逐渐增加,果皮颜色逐渐加深,硬度逐渐降低。本研究建立的模型可用于其他樱桃品种品质预测,同时可为进一步探索樱桃果实成熟阶段内部物质变化提供参考依据。

关键词：樱桃红外光谱建模测量内部品质