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Solution to the Horizontal Crossing Problem of Transportation System at Key Points in Open-Pit Mines

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Asian Agricultural Research 2024年第7期16卷 36-38,47页

作者： Tao DONG ling liu CCTEG Shenyang Engineering Company Shenyang 110015China

In order to reduce the horizontal crossing transportation problems between coal trucks and stripping trucks,large and small vehicles,and transport trucks and belt conveyors at key points of open pit mine in production,the separate transportation mode of underpass bridge and overpass steel trestle is proposed to optimize the open pit development transportation system,so as to solve the practical problems that the horizontal cross of transport vehicles causes vehicle blockage,affects production schedule and production *** results show that the horizontal crossing road can be changed into a separate type of overpass steel trestle,which can realize the classified transportation of large and small vehicles,reduce the traffic density,make vehicles with different functions go their own way,eliminate the hidden danger of traffic accidents,and improve the production efficiency.

关键词： Open-pit mines Cross-transport Underpass bridge Overpass steel trestle Production efficiency

Clinicopathological Features and Long-Term Prognostic Role of Human Epidermal Growth Factor Receptor-2 Low Expression in Chinese Patients with Early Breast Cancer:A Single-Institution Study

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Biomedical and Environmental Sciences 2024年第5期37卷 457-470页

作者： KONG Zi Qing liu Li Qun HUANG De Qin WANG Yu Tong LI Jing Jie ZHANG Zheng WANG Xi Xi liu Chuan ling ZHANG Ya Di SHAO Jia Kang ZHU Yi Min CHEN Yi Meng liu Mei ZHAO Wei Hong Medical School of Chinese PLA Beijing 100853China Department of Medical Oncology the First Medical CenterGeneral Hospital of the Chinese People’s Liberation ArmyBeijing 100853China Nankai University School of Medicine Tianjin 300071China Department of Medical Oncology the Fifth Medical CenterGeneral Hospital of the Chinese People’s Liberation ArmyBeijing 100039China Department of Medical Oncology Xi'an Jiaotong UniversityXi’an 710061ShaanxiChina Department of Pathology the Sixth Medical CenterGeneral Hospital of the Chinese People’s Liberation ArmyBeijing 100037China

Objective This study aimed to comprehensively analyze and compare the clinicopathological features and prognosis of Chinese patients with human epidermal growth factor receptor 2(HER2)-low early breast cancer(BC)and HER2-IHC0 *** Patients diagnosed with HER2-negative BC(N=999)at our institution between January2011 and December 2015 formed our study *** characteristics,association between estrogen receptor(ER)expression and HER2-low,and evolution of HER2 immunohistochemical(IHC)score were ***-Meier method and log-rank test were used to compare the long-term survival outcomes(5-year follow-up)between the HER2-IHC0 and HER2-low *** HER2-low BC group tended to demonstrate high expression of ER and more progesterone receptor(PgR)positivity than HER2-IHC0 BC group(P<0.001).The rate of HER2-low status increased with increasing ER expression levels(Mantel-Haenszelχ^(2)test,P<0.001,Pearson’s R=0.159,P<0.001).Survival analysis revealed a significantly longer overall survival(OS)in HER2-low BC group than in HER2-IHC0 group(P=0.007)in the whole cohort and the hormone receptor(HR)-negative *** were no significant differences between the two groups in terms of disease-free survival(DFS).The discordance rate of HER2 IHC scores between primary and metastatic sites was 36.84%.Conclusion HER2-low BC may not be regarded as a unique BC group in this population-based study due to similar clinicopathological features and prognostic roles.

关键词： HER2 HER2-low Breast cancer Estrogen receptor Trastuzumab deruxtecan

Toward to agricultural green development by multi-objective zoning and nitrogen nutrient management:a case study in the Baiyangdian Basin,China

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Frontiers of Agricultural Science and Engineering 2024年第1期11卷 140-154页

作者： Xiaomeng ZHANG Xiangwen FAN Wenqi MA Zhaohai BAI Jiafa LUO Jing YANG ling liu Jianjie ZHANG Lin MA College of Resources and Environmental Sciences Hebei Agricultural UniversityBaoding 071000China Center for Agricultural Resources Research Institute of Genetic and Developmental BiologyChinese Academy of SciencesShijiazhuang 050022China Ruakura Research Centre AgResearch LimitedHamilton 3240New Zealand

Although China has achieved great advancements toward national food security,the country is still confronted with a range of challenges,including natural resource stress,imbalanced diets and environmental *** management of crop–livestock systems is the key measure to realize agricultural green ***,optimized management of crop–livestock systems that use multi-objective zoning is *** study employed a multi-objective zoning management approach to comprehensively analyze four indicators:ammonia volatilization,nitrogen surplus,soil carrying capacity and ecological red line *** its significant ecological integrity and a strong emphasis on sustainability,the Baiyangdian Basin serves as a unique and suitable test case for conducting analyses on multi-objective nutrient optimization management,with the aim to facilitate the agricultural green *** study finds that less than 8%of the area in the Baiyangdian Basin meet the acceptable environmental indicator standard,whereas around 50%of the area that had both nitrogen surplus and ammonia volatilization exceeded the *** of unified management,that is,the same management technique across the study areas,could result in an increase of areas meeting environmental indicator thresholds to 21.1%.This project developed a novel multi-indicator partition optimization method,in which distinct measures are tailored for different areas to satisfy multiple environmental *** of this method,could potentially bring more than 50%area below the threshold,and areas with ammonia emissions and nitrogen surplus could be reduced to 15.8%.The multi-indicators partition optimization method represents a more advanced and efficiency-oriented management approach when compared to unified *** approach could be regarded as the best available option to help China achieve agricultural transformation to improve efficient production and reduce e

关键词： Agricultural green development Baiyangdian Basin environmental emission threshold partition management

国际金融市场与人民币在岸离岸汇率间的极端风险传染

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经济问题探索 2024年第1期 67-75页

作者：刘凌上海对外经贸大学上海201620

在西方各国财政货币政策多变和中国高水平开放背景下,国际金融市场极端风险频发,人民币汇率作为国内国际双循环互促中的关键变量,极易受这些极端风险影响。采用GARCH-Copula-CoVaR模型分析了国际金融市场与人民币在岸离岸汇率间极端风... 详细信息

在西方各国财政货币政策多变和中国高水平开放背景下,国际金融市场极端风险频发,人民币汇率作为国内国际双循环互促中的关键变量,极易受这些极端风险影响。采用GARCH-Copula-CoVaR模型分析了国际金融市场与人民币在岸离岸汇率间极端风险双向传染的强度、非线性特征和动态变化。研究发现,相较于对人民币在岸汇率,国际金融市场极端风险对人民币离岸汇率的传染更强;人民币在岸汇率极端风险比离岸汇率极端风险对国际金融市场的传染要弱,且强度变化小;VIX指数的极端风险对在岸离岸汇率的传染最强,VIX指数大于30时应提高警惕;当前离岸和在岸人民币市场管理与跨国资本流动管理措施对维护我国金融安全和稳定有一定效果。本研究对如何防范国际金融市场与人民币汇率极端风险双向传染的负面冲击,维护我国经济金融安全稳定具有重要价值。

关键词：国际金融市场人民币在岸离岸汇率极端风险 GARCH-Copula-CoVaR模型

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“注意”与“审美注意”

哲学动态 2024年第7期 103-108页

作者：刘玲暨南大学哲学研究所

在审美经验的理解中,一种较为突出的解释路径是通过“注意”来进行说明。南尼通过引入关于“注意”具体形式的讨论推进了对“审美注意”的理解,认为后者是一种特别的注意形式。该理论的关键点在于对“双重性注意”的分析,而对该议题的... 详细信息

在审美经验的理解中,一种较为突出的解释路径是通过“注意”来进行说明。南尼通过引入关于“注意”具体形式的讨论推进了对“审美注意”的理解,认为后者是一种特别的注意形式。该理论的关键点在于对“双重性注意”的分析,而对该议题的讨论显现出这种新理论和审美经验的注意路径存在着相同的问题。深入考察审美注意以及审美经验的研究需要重视经验美学与心灵哲学之间的互动。

关键词：注意审美注意双重性注意有意识注意审美经验

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刘玲教授从“气变则病”论治麻木临证经验

亚太传统医药 2024年第7期20卷 150-154页

作者：田冰心刘穗琦刘玲湖北中医药大学第一临床学院湖北武汉430060 湖北中医药大学附属医院脑病科湖北武汉430060

刘玲教授针对外邪、痰湿、内风、瘀血等不同的致麻因素,从营卫、脾气、阳气、肝气等角度探讨从气论治麻木,并在此基础上,配合参苓白术散、补中益气汤、柴胡疏肝散、天麻钩藤饮、黄芪桂枝五物汤、补阳还五汤等经典名方,以期为麻木提供有... 详细信息

刘玲教授针对外邪、痰湿、内风、瘀血等不同的致麻因素,从营卫、脾气、阳气、肝气等角度探讨从气论治麻木,并在此基础上,配合参苓白术散、补中益气汤、柴胡疏肝散、天麻钩藤饮、黄芪桂枝五物汤、补阳还五汤等经典名方,以期为麻木提供有益的治疗思路,帮助患者提高生活质量。

关键词：麻木气气变则病刘玲从气论治

Enhanced degradation of florfenicol by microscale SiC/Fe:Dechlorination via hydrogenolysis

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Chinese Chemical Letters 2024年第7期35卷 218-221页

作者： Yun-Fei Zhang Chun-Hui Zhang Jian-Hui Xu Lei Li Dan Li Jin-Hong Fan Jiale Gao Xin Quan Qi Wu Yue Zou Yan-ling liu Dongguan University of Technology School of Environment and Civil EngineeringDongguan 523830China State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai 200092China

Herein,the degradation of florfenicol(FLO)over zero-valent iron(ZVI)enhanced by SiC was systematically *** was found that 5 g/L of ZVI/SiC(1:3)at pH 3.0 could completely degrade 20 mg/L of FLO within 1 h,with a Kobsvalue of 0.0873 min^(-1),12.5 times greater than that of pure ZVI(0.0069 min^(-1)).Vibrating sample magnetometer(VSM)characterizations revealed that the use of SiC supporter reduces the magnetic intensity of ZVI,which mitigates iron particle agglomeration,increases Brunauer-Emmett-Teller(BET)surface area,and enhances FLO degradation ***,ZVI/SiC exhibits a much lower hydrogen evolution potential(HEP)and significantly higher corrosion currents compared to pure *** was proposed to undergo degradation via reductive dechlorination,involving a hydrogenolysis mechanism that entails the cleavage of theσ*** study provides new insights into the reduction hydrogenation mechanism of ZVI.

关键词： Zero-valent iron Silicon carbide Reductive dechlorination Hydrogenolysis Florfenicol

Prognostic value of time-varying dead space estimates in mechanically ventilated patients with acute respiratory distress syndrome

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Journal of Intensive Medicine 2024年第2期4卷 187-193页

作者： Lianlian Jiang Hui Chen Jianfeng Xie ling liu Yi Yang Jiangsu Provincial Key Laboratory of Critical Care Medicine Department of Critical Care MedicineZhongda HospitalSchool of MedicineSoutheast UniversityNanjingJiangsuChina Department of Critical Care Medicine The First Affiliated Hospital of Soochow UniversitySoochow UniversitySuzhouJiangsuChina

Background The dead space fraction(VD/VT)has proven to be a powerful predictor of higher mortality in acute respiratory distress syndrome(ARDS).However,its measurement relies on expired carbon dioxide,limiting its widespread application in clinical *** estimates employing routine variables have been found to be reliable substitutes for direct measurement of VD/*** this study,we evaluated the prognostic value of these dead space estimates obtained in the first 7 days following the initiation of *** This retrospective observational study was conducted using data from the Chinese database in intensive care(CDIC).Eligible participants were adult ARDS patients receiving invasive mechanical ventilation while in the intensive care unit between 1st January 2014 and 31st March *** collected data during the first 7 days of ventilation to calculate various dead space estimates,including ventilatory ratio(VR),corrected minute ventilation(V_(Ecorr)),VD/VT(Harris–Benedict),VD/VT(Siddiki estimate),and VD/VT(Penn State estimate)longitudinally.A time-dependent Cox model was used to handle these time-varying *** A total of 392 patients(median age 66[interquartile range:55–77]years,median SOFA score 9[interquartile range:7–12])were finally included in our analysis,among whom 132(33.7%)patients died within 28 days of ***(hazard ratio[HR]=1.04 per 0.1 increase,95%confidence interval[CI]:1.01 to 1.06;P=0.013),V_(Ecorr)(HR=1.08 per 1 increase,95%CI:1.04 to 1.12;P1.3,V_(Ecorr)>7.53,a

关键词： Acute respiratory distress syndr ome Mechanical ventilation Dead space 28-day mortality

低镁血症与肾移植:免疫影响及感染风险的研究进展

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器官移植 2024年第4期15卷 648-652页

作者：胡瑶刘玲重庆医科大学附属第二医院泌尿肾病中心重庆401336

镁作为细胞内含量丰富且具有广泛作用的阳离子,在免疫功能方面发挥着积极的作用,备受关注。在多种因素的影响下,如使用钙调磷酸酶抑制剂等,肾移植术后低镁血症的发生并不罕见。感染是肾移植术后常见的并发症,也是导致肾移植受者死亡的... 详细信息

镁作为细胞内含量丰富且具有广泛作用的阳离子,在免疫功能方面发挥着积极的作用,备受关注。在多种因素的影响下,如使用钙调磷酸酶抑制剂等,肾移植术后低镁血症的发生并不罕见。感染是肾移植术后常见的并发症,也是导致肾移植受者死亡的常见原因之一。近年来的临床研究表明,肾移植术后低镁血症与移植后感染风险密切相关。在肾移植受者中关注并监测镁浓度可能有助于预防感染的发生,改善受者及移植物预后。因此,本文就镁与免疫反应、肾移植术后低镁血症发生的原因及肾移植术后低镁血症与感染的相关研究进展进行综述,以期为肾移植术后感染的预防与治疗提供参考。

关键词：肾移植低镁血症镁离子感染免疫反应钙调磷酸酶抑制剂质子泵抑制剂瞬时受体电位

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