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新发展格局下推进能源国际合作的历史演进、现实依据与路径选择

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西安财经大学学报 2024年第5期37卷 103-114页

作者：焦兵李佳西安财经大学管理学院陕西西安710100

文章将打造中国主导的亚洲能源价值链、重塑全球能源价值链作为“十四五”及未来时期中国能源行业高水平对外开放的重要内容。为此,首先描述了改革开放40多年中国能源国际合作的历史演进过程;其次从经济增长效应、科技创新效应和价值链... 详细信息

文章将打造中国主导的亚洲能源价值链、重塑全球能源价值链作为“十四五”及未来时期中国能源行业高水平对外开放的重要内容。为此,首先描述了改革开放40多年中国能源国际合作的历史演进过程;其次从经济增长效应、科技创新效应和价值链攀升效应三个方面评价了改革开放以来中国能源国际合作的绩效;最后分析了中国推进能源国际合作的现实依据,提出了通过深化与中亚和西亚国家合作,共同打造中国-中亚-西亚能源区域价值链,进而重塑能源全球价值链的路径选择。本文的研究为新发展格局下推进能源国际合作提供了理论支撑和政策选择。

关键词：国际能源合作全球价值链区域价值链中国-中亚-西亚经济走廊

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水肥耦合对硒砂瓜产量和品质的影响

安徽农业科学 2024年第20期52卷 39-44页

作者：施苏齐郑淑欣焦炳忠李金泽宁夏回族自治区水利科学研究院宁夏银川750021 沙坡头区农业技术推广服务中心宁夏中卫755099 宁夏旱作节水高效农业工程技术研究中心宁夏银川750021

[目的]探究宁夏中部干旱带膜下滴灌条件下种植硒砂瓜适宜的水肥组合模式。[方法]以当地主栽品种“金城5号”为供试材料,设置3个灌溉梯度和3个施肥水平,共计9个处理,测定不同处理下硒砂瓜的生长指标、果实纵径和横径、产量及品质指标。... 详细信息

[目的]探究宁夏中部干旱带膜下滴灌条件下种植硒砂瓜适宜的水肥组合模式。[方法]以当地主栽品种“金城5号”为供试材料,设置3个灌溉梯度和3个施肥水平,共计9个处理,测定不同处理下硒砂瓜的生长指标、果实纵径和横径、产量及品质指标。通过主成分分析筛选关键指标,评价灌水量和施肥量对硒砂瓜各项指标的影响。[结果]硒砂瓜的产量和品质均受灌水量、施肥量及水肥交互效应的影响,且水肥交互效应的影响高于灌水量和施肥量。W_(2)F_(2)处理产量、中心和边际可溶性固形物含量显著提高,中边差较小,硒砂瓜甜度均匀,提高了硒砂瓜口感和品质。基于主成分分析将品质指标、产量、灌溉水分利用效率和肥料偏生产力12项指标转换为2个独立的综合指标,其累计贡献率高达89.244%。W_(2)F_(2)处理的水肥耦合效应综合得分最高。[结论]宁夏中部干旱带硒砂瓜适宜的水肥组合模式是灌水定额为210 m^(3)/hm^(2)、施肥定额为300 kg/hm^(2)。

关键词：灌溉肥料灌溉水分利用效率肥料偏生产力主成分分析

Microstructural characterization and mechanical properties of(TiC+TiB)/TA15 composites prepared by an in-situ synthesis method

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China Foundry 2024年第2期21卷 168-174页

作者： Zhi-yong Zhang jiao-jiao Cheng Jia-qi Xie Shi-bing Liu Kun Shi Jun Zhao Shenyang Research Institute of Foundry Co. Ltd.CAMShenyang 110022China National Key Laboratory of Advanced Casting Technologies Shenyang 110022China

Titanium matrix composites reinforced with ceramic particles are considered a promising engineering material due to their combination of high specific strength,low density,and high *** this study,the TA15-based composites reinforced with a volume fraction of 10% to 25%(TiB+TiC)were prepared using powder metallurgy and casting *** characterization and phase constitution were examined using optical microscopy(OM),scanning electron microscopy(SEM),and X-ray diffraction(XRD).In addition,the microhardness,room temperature(RT)and high temperature(HT)tensile properties of the composites were *** revealed that the reinforcements are distributed uniformly even in the composites with a high volume of TiB and ***,as the volume fraction exceeds 15%,TiB and TiC particles become coarsening and exhibit rod-like and dendritic-like *** increases gradually from 321.2 HV for the base alloy to a maximum of 473.3 HV as the reinforcement increases to 25vol.%.Tensile test results indicate that a reinforcement volume fraction above 20% is beneficial for enhancing tensile strength and yield strength at high temperatures,but it has an adverse effect on room temperature ***,if the reinforcement volume fraction is below 20%,it can improve high-temperature elongation when the temperature exceeds 600℃.

关键词： titanium matrix composites microstucture microhardness tensile properties in-situ synthesis

Novel approach of ultrasound-guided lateral recess block for a patient with lateral recess stenosis: A case report

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World Journal of Clinical Cases 2024年第5期12卷 1010-1017页

作者： jiao Yang Xin-Ling Li Qing-bing Li Department of Rehabilitation Medicine Center West China HospitalChengdu 610041Sichuan ProvinceChina Key Laboratory of Rehabilitation Medicine in Sichuan Province West China HospitalChengdu 610041Sichuan ProvinceChina

BACKGROUND Ultrasound guide technology,which can provide real-time visualization of the needle tip and tissues and avoid many adverse events,is widely used in mini-mally invasive ***,the studies on ultrasound-guided Lateral recess block(LRB)are limited,this is probably because there is no recognized standard method for ultrasound *** study aimed to evaluate the effect of ultrasound-guided LRB in patients with lateral recess stenosis(LRS).CASE SUMMARY A 65-year-old patient complained of low back pain accompanied occasionally by pain and numbness in the left lower *** examination showed ten-derness on the spinous process and paraspinal muscles from L1 to S1,extensor hallucis longus and tibialis anterior weakness(muscle strength:4-),and a positive straight leg raising test in the left lower limb(60°).Magnetic resonance imaging showed L4–L5 disc degeneration with left LRS and nerve root ***,the patient was diagnosed with *** patient was treated with a novel ultrasound-guided LRB *** patient’s symptoms significantly improved without any complications at 1 wk postoperatively and at the 3-month *** This is the first report on the LRS treatment with ultrasound-guided LRB from the contralateral spinous process along the inner side of the articular process by out-plane *** studies are expected to investigate the efficacy and safety of ultrasound-guided LRB for patients with LRS.

关键词： Lateral recess stenosis Ultrasound Lateral recess block Real-time visualization Low back pain Case report

补阳还五汤加减联合脑-肢协同调控治疗卒中后肢体功能障碍临床研究

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新中医 2024年第7期56卷 36-41页

作者：姚先丽李坤彬刘亚鸽温小鹏吴志远焦冰郑州大学附属郑州中心医院神经康复科河南郑州450006

目的:观察补阳还五汤加减联合脑-肢协同调控治疗脑卒中后肢体功能障碍的疗效。方法:选取96例卒中后肢体功能障碍患者为研究对象,按随机数字表法分为对照组及观察组各48例。对照组采取常规治疗加脑-肢协同调控,观察组在对照组基础上采用... 详细信息

目的:观察补阳还五汤加减联合脑-肢协同调控治疗脑卒中后肢体功能障碍的疗效。方法:选取96例卒中后肢体功能障碍患者为研究对象,按随机数字表法分为对照组及观察组各48例。对照组采取常规治疗加脑-肢协同调控,观察组在对照组基础上采用补阳还五汤加减治疗。比较2组临床疗效,比较2组治疗前后中医证候积分、血清指标[C-反应蛋白(CRP)、同型半胱氨酸(Hcy)]、血流变指标[纤维蛋白原(Fib)、血浆黏度、红细胞比容(HCT)]、Fugl-Meyer运动功能评分量表(FMA)、Berg平衡量表(BBS)、功能性步行量表(FAC)评分的变化。结果:治疗4周后,观察组临床疗效总有效率为95.83%,对照组为83.33%,2组比较,差异有统计学意义(P<0.05)。治疗后,2组中医证候各积分均较治疗前下降(P<0.05),观察组中医证候各积分均低于对照组(P<0.05)。治疗后,2组CRP、Hcy指标值均较治疗前下降(P<0.05),观察组上述2项指标值均低于对照组(P<0.05)。治疗4周后,2组Fib、血浆黏度、HCT指标值均较治疗前下降(P<0.05),观察组上述3项指标值均低于对照组(P<0.05)。治疗4周后,2组FMA、BBS、FAC评分均较治疗前升高(P<0.05),观察组评分均高于对照组(P<0.05)。结论:补阳还五汤加减联合脑-肢协同调控治疗卒中后肢体功能障碍能提升临床疗效,改善肌力、肌张力下降等症状,减轻炎症,促进肢体运动能力的恢复。

关键词：脑卒中肢体功能障碍补阳还五汤脑-肢协同调控 Fugl-Meyer运动功能评分量表

构建人类命运共同体的理论逻辑、历史逻辑与实践逻辑

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北京行政学院学报 2022年第3期 85-93页

作者：焦兵中国社会科学院大学历史学院北京102488

构建人类命运共同体,是习近平总书记运用历史思维,以大历史观视野,从历史长河、时代大潮、全球风云中分析演变机理、探究历史规律,作出的原创性贡献。构建人类命运共同体,是对马克思主义“世界历史”理论的创造性运用,是对中华优秀传统... 详细信息

构建人类命运共同体,是习近平总书记运用历史思维,以大历史观视野,从历史长河、时代大潮、全球风云中分析演变机理、探究历史规律,作出的原创性贡献。构建人类命运共同体,是对马克思主义“世界历史”理论的创造性运用,是对中华优秀传统文化的创造性转化,是对新中国外交实践的创造性升华,具有深厚历史底蕴,构成了理论逻辑、历史逻辑与实践逻辑的高度统一,体现了中国共产党人的历史自觉、历史自信和历史担当。只有坚持构建人类命运共同体,我们才能站在历史正确的一边,站在人类进步的一边,才能推动历史车轮向着文明进步的方向前进。

关键词：人类命运共同体世界历史中华优秀传统文化新中国外交

A four-band index for both liquid and solid water and its applications in the Aral Sea Basin

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Science China Earth Sciences 2024年第3期67卷 769-788页

作者： bing YUE Xi CHEN Saibo LI Zhengping DU John WILSON Junhui YANG Yimen jiao Shuangyan HUANG Chenghu ZHOU Xinjiang Institute of Ecology and Geography Chinese Academy of SciencesUrumqi 830011China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China Spatial Sciences Institute University of Southern CaliforniaLos AngelesCA 90089-0374USA

Various investigations have been conducted to analyze the water-coverage area of the Aral Sea and the Aral Sea Basin(ASB). However, the investigations incorporated considerable uncertainty and the used water indices had misclassification problem, which made different research groups present different results. Thus we first ascertain the boundaries of the ASB, the Syr and Amu river basins as well as their upper, middle and lower reaches. Then a four-band index for both liquid and solid water(ILSW) is proposed to address the misclassification problems of the classic water indices. ILSW is calculated by using the reflectance values of the green, red, near infrared, and thermal infrared bands, which combines the normalized difference water index(NDWI) and land surface temperature(LST) together. Validation results show that the ILSW water index has the highest accuracy by far in the Aral Sea Basin. Our results indicate that annual average decline of the water-coverage area was 963 km^(2) in the southern Aral Sea, whereas the northern Aral Sea has experienced little change. In the meanwhile, permanent ice and snow in upper reach of ASB has retreated considerably. Annual retreating rates of the permanent ice and snow were respectively 6233and 3841 km^(2) in upper reaches of Amu river basin(UARB) and Syr river basin(USRB). One of major reasons is that climate has become warmer in ASB. The climate change has caused serious water deficit problem. The water deficit had an increasing trend since the 1990s and its increasing rates was 3.778 billion m^(3) yearly on average. The total water deficit was 76.967 billion m^(3) on average in the whole area of ASB in the 2010s. However, up reaches of Syr river basin(USRB), a component area of ASB, had water surplus of 25.461 billion m^(3). These conclusions are useful for setting out a sustainable development strategy in ASB.

关键词： Aral Sea Basin Syr river basin Amu river basin Water indices Water-coverage area Water deficit Climate change

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农村金融需求的结构性与层次性分析

学术界 2007年第1期 141-145页

作者：焦兵西安交通大学经济与金融学院陕西西安710061

本文分析了农村金融需求的整体结构特点,并且在此基础上具体探讨了农村借贷结构、层次的不同以及借贷用途的不同。通过本文的分析,我们可以看到中国农村金融市场“二元化”结构的严重程度。针对中国农村金融市场“分割性”的特点,本文... 详细信息

本文分析了农村金融需求的整体结构特点,并且在此基础上具体探讨了农村借贷结构、层次的不同以及借贷用途的不同。通过本文的分析,我们可以看到中国农村金融市场“二元化”结构的严重程度。针对中国农村金融市场“分割性”的特点,本文提出了相关的建议。

关键词：农村金融需求借贷结构 “二元化”金融

Simplified liver imaging reporting and data system for the diagnosis of hepatocellular carcinoma on gadoxetic acid-enhanced magnetic resonance imaging

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World Journal of Gastrointestinal Oncology 2024年第6期16卷 2439-2448页

作者： Rong Lyu Wei-Juan Hu Di Wang jiao Wang Yu-bing Ye Ke-Feng Jia Department of Radiology Tianjin Third Central HospitalTianjin Key Laboratory of Extracorporeal Life Support for Critical DiseasesArtificial Cell Engineering Technology Research CenterTianjin 300170China

BACKGROUND The liver imaging reporting and data system(LI-RADS)diagnostic table has 15 cells and is too *** diagnostic performance of LI-RADS for hepatocellular carcinoma(HCC)is not satisfactory on gadoxetic acid-enhanced magnetic resonance imaging(EOB-MRI).AIM To evaluate the ability of the simplified LI-RADS(sLI-RADS)to diagnose HCC on *** A total of 331 patients with 356 hepatic observations were retrospectively *** diagnostic performance of sLI-RADS A-D using a single threshold was evaluated and compared with LI-RADS v2018 to determine the optimal *** algorithms of sLI-RADS A-D are as follows:The single threshold for sLI-RADS A and B was 10 mm,that is,classified observations≥10mm using an algorithm of 10-19 mm observations(sLI-RADS A)and≥20 mm observations(sLI-RADS B)in the diagnosis table of LI-RADS v2018,respectively,while the classification algorithm remained unchanged for observations0.999).With HBP hypointensity as an MF,the sensitivity of F-sLI-RADS was greater than that of LI-RADS v2018(93.0%vs 87.0%,P<0.001)and sLI-RADS D(93.0%vs 89.8%,P=0.016),without a lower specificity(86.5%vs 90.1%,P=0.062;86.5%vs 89.4%,P=0.125).Compared with that of LI-RADS v2018,the time to classif

关键词： Hepatocellular carcinoma Magnetic resonance imaging Liver Diagnosis Contrast agent