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镁合金焊接工艺及接头形貌分析

焊接技术 2024年第7期53卷 54-56页

作者：冯卓陆政宇崔泽源罗国欣凌堃合肥工业大学材料科学与工程学院安徽合肥230009

镁合金材料的优良性能使其具有广阔的发展前景。文中采用氩弧焊、冷焊、激光焊3种不同的焊接方法对镁合金进行焊接,通过对焊接接头进行形貌分析可知,激光焊可获得优异的接头性能,这为镁合金结构件的连接提供技术支持。

关键词：镁合金焊接工艺形貌分析

Serum Thyroglobulin——A Sensitive Biomarker of Iodine Nutrition Status and Affected by Thyroid Abnormalities and Disease in Adult Populations

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Biomedical and Environmental Sciences 2017年第7期30卷 508-516页

作者： DU Yang GAO Yan Hui feng zhuo Ying MENG Fan Gang FAN Li Jun SUN Dian Jun Center for Endemic Disease Control Chinese Center for Disease Control and PreventionHarbin Medical UniversityKey Lab of Etiology and EpidemiologyNational Health and Family Planning Commission(23618504) Heilongjiang Land Reclamation Bureau General Hospital

Objective To evaluate the usefulness of the thyroglobulin （Tg） level in adults as a nutritiona biomarker of iodine status and to identify the factors related to the serum Tg level. Methods A cross-sectional study was conducted in adult populations of areas differing in iodine nutrition from three provinces （Autonomous Region） in China. Serum levels of thyroid hormones and Tg as well as thyroid autoantibodies were measured. The thyroid volume and nodule were measured by ultrasound. A multivariate linear regression analysis was used to assess iodine intake and other indeterminate factors associated with the serum Tg level. Results A total of 573 adults were recruited for this study. The serum Tg levels differed significantly among the three groups （22.27 ~g/L, 9.73 pg/L and 15.77 pg/L in the excess, more-than-adequate, and deficient groups, respectively）. The results of multivariate linear regression analysis indicate that excess and deficient iodine intake, goiter, thyroid nodule, hypothyroidism are significantly related with higher Tg level, and TgAb positivity is significantly related with lower serum Tg. Conclusion The serum Tg level reflects abnormal thyroid function and is a sensitive functiona biomarker of iodine nutrition status.

关键词： High iodine Iodine deficiency Thyroglobulin

Fire-needle acupuncture for upper limb spastic paralysis after stroke:Study protocol for a randomized controlled trial

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Journal of Integrative Medicine 2019年第3期17卷 167-172页

作者： Xin-yu Yue zhuo-qi feng Xi-yi Yu Jia-min Hu Xiao-Jing He Shi Shu School of Traditional Chinese Medicine Naval Medical University Beijing He's SanTong Acupuncture and Fire-needle Moxibustion Clinic Basic Medical School Shanghai University of Traditional Chinese Medicine

Background: Fire-needle acupuncture, an important kind of acupuncture therapy, has been clinically used to treat upper limb spastic paralysis(ULSP) after stroke. Clinical experience has indicated that fire-needle acupuncture treatment takes less time, requires fewer visits, and has more rapid results and fewer side effects compared to chemical medicine alternatives. This study will evaluate the effects of fire-needle acupuncture for ULSP in the context of standardized clinical research and provide high-quality data to inform clinical procedures and future study ***/Design: A randomized controlled trial will be carried out to evaluate the effects of fire-needle acupuncture therapy in patients with ULSP from stroke. ULSP patients(n = 120) will be recruited at Changhai Hospital in Shanghai, China. Patients will be randomly divided into three groups, including fire-needle acupuncture group(FAG), filiform-needle acupuncture group(FFAG) and rehabilitation treatment group(RTG). During the 3-week treatment, the FAG will be treated every two days, while FFAG and RTG will be treated 5 d in a row and then rest for 2 d. The Simplified Fugl-Meyer Motor Function Scale and Modified Ashworth Scale will be used as the primary outcome measures. Statistical analysis will be conducted by an independent ***: Through this study, the utility of fire-needle acupuncture in treating ULSP after stroke will be tested, and some specific claims of fire-needle acupuncture therapy will be evaluated, such as relieving spasm and muscular tension, improving activities of daily living, rapidity of response and less frequency of treatment compared with other treatments.

关键词： Fire-needle acupuncture Upper limb spastic paralysis Stroke Randomized controlled trial Study protocol

Review on frost resistance and anti-clogging of pervious concrete

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第3期11卷 481-496页

作者： zhuo Wang Zhichen Liu feng Zeng Kun He Shuaicheng Guo China Railway Construction Group Co. Ltd.Beijing 100040China State Key Laboratory of Bridge Safety and Resilience College of Civil EngineeringHunan UniversityChangsha 410082China

Pervious concrete is a special type of concrete that is of high porosity and contains no or a small amount of fine aggregate,and it is an important basic material for sponge city *** presence of a large number of connected pores inside pervious concrete leads to a marked difference in durability failure mechanism compared with that of ordinary *** this study,the frost resistance and anti-clogging of pervious concrete were introduced in detail,and the methods to improve their performance were summarized *** cracking pattern of pervious concrete is influenced by geometric characteristics and three-dimensional morphological features of pores,resulting in its crack generation,development,and geometry being significantly different from those of ordinary concrete,thus leading to different freeze-thaw cycle *** addition,due to its different pore structure compared to ordinary concrete,three types of clogging mechanisms,affecting the long-term permeability of pervious concrete were elaborated systematically(i.e.,physical clogging,biological clogging,and chemical clogging).And the ways to improve the anti-clogging of pervious concrete are systematically presented from multiple ***,in order to broaden the engineering applications of pervious concrete,some research proposals are presented in this study.

关键词： Pervious concrete Connected pore Frost resistance Clogging mechanism

高血压、心房颤动与阿尔兹海默症风险:一项孟德尔随机研究

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川北医学院学报 2024年第8期39卷 1009-1013页

作者：蒲珊珊朱小敏卓桂锋陈炜吴林广西中医药大学第一临床医学院广西南宁530022 广西中医药大学第一附属医院广西南宁530022 广西中医药大学科学实验中心广西南宁530022 川北医学院附属医院四川南充637000

目的:采用遗传变异的双样本孟德尔随机化(MR)评估高血压、心房颤动和阿尔兹海默症之间的因果关系,避免观察性研究的局限性。方法:对来自IEU数据库的高血压(HBP)、心房颤动(AF)和阿尔兹海默症(AD)数据集进行MR分析,采用逆方差加权(IVW)、... 详细信息

目的:采用遗传变异的双样本孟德尔随机化(MR)评估高血压、心房颤动和阿尔兹海默症之间的因果关系,避免观察性研究的局限性。方法:对来自IEU数据库的高血压(HBP)、心房颤动(AF)和阿尔兹海默症(AD)数据集进行MR分析,采用逆方差加权(IVW)、MR Egger、加权中位数、简单模式、加权模式。采用Cochran's Q检验、MR Egger截距检验进行敏感性分析。结果:遗传预测的HBP与AD的风险的关联差异无统计学意义(OR=0.89,95%CI:0.53~1.49,P=0.58);MR Egger未发现遗传多效性的证据(截距=0.007,P=0.39)。AF与AD的风险不存在因果关联(OR=1.04,95%CI:0.97~1.10,P=0.75);MR Egger未发现遗传多效性的证据(截距=0.002,P=0.63)。结论:孟德尔随机化分析未发现HBP、AF与AD之间存在因果关系。

关键词： HBP AF AD 孟德尔随机化研究单核苷酸多态性

Carboniferous and Permian integrative stratigraphy and timescale of North China Block

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Science China Earth Sciences 2022年第6期65卷 983-1011页

作者： Boheng SHEN Shuzhong SHEN Qiong WU Shuichang ZHANG Bin ZHANG Xiangdong WANG Zhangshuai HOU Dongxun YUAN Yichun ZHANG feng LIU Jun LIU Hua ZHANG Yukun SHI Jun WANG zhuo feng State Key Laboratory for Mineral Deposits Research School of Earth Sciences and Engineering and Frontiers Science Center for Critical Earth Material CyclingNanjing UniversityNanjing 210023China Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083China School of Resources and Geosciences China University of Mining and TechnologyXuzhou 221116China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and PaleoenvironmentChinese Academy of SciencesNanjing 210008China Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and Paleoanthropology and Center for Excellence in Life and PaleoenvironmentChinese Academy of SciencesBeijing 100044China Institute of Palaeontology Yunnan UniversityKunming 650500China

The Carboniferous-Permian strata in the North China Block(NCB) contain abundant fossils, coals and natural *** a high-resolution timescale for the Carboniferous and Permian in the NCB is essential to understand the geologic events and explore the spatial and temporal distributions of the natural resources. The upper Carboniferous and the basal part of Permian are relatively well correlated because they yield marine conodont and fusuline fossils. However, the Permian terrestrial strata mostly rely on poorly constrained palynostratigraphy and phytostratigraphy and are short of the precise geochronologic constraints on the correlation with the marine strata. This study provides a critical review on the state-of-the-art of the latest Carboniferous and Permian chronostratigraphic and biostratigraphic frameworks and stratigraphic correlation in the NCB. The Penchi Formation ranges from lower Bashkirian to lower Gzhelian;the Taiyuan Formation is assigned to the upper Gzhelian to lower Asselian;the Shansi and Lower Shihhotse formations are from middle Asselian to lower Sakmarian;the Upper Shihhotse Formation is assigned to upper Artinskian to lower Kungurian, and the Sunjiagou Formation was assigned to Lopingian, respectively. A long hiatus up to ~20 Myr between the Upper Shihhotse and Sunjiagou formations, mainly marked by a large-scale erosional surface at the base of a coarse conglomeratic sandstone unit and/or multiple paleosol layers as well as significant differences of floras between these two lithostratigraphic units, is present probably due to tectonic uplift in association with the closure of the Paleo Asian Ocean(PAO) during the Cisuralian and Guadalupian. The possible amplitude of sea-level changes from Carboniferous to Permian on the NCB is estimated from 0 to 40 *** floral succession, depositional records and organic carbon isotope profiles suggest that the latest Carboniferous and earliest Permian was a favorable period for coal accumulation

关键词： North China Block Carboniferous-Permian Geochronology Biostratigraphy Correlation

棉花AP2/ERF转录因子Gh TINY2负调控植株抗盐性的功能分析

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作物学报 2024年第1期50卷 126-137页

作者：肖胜华陆妍李安子覃耀斌廖铭静闭兆福卓柑锋朱永红朱龙付广西大学农学院/亚热带农业生物资源保护与利用国家重点实验室广西南宁530000 华中农业大学/作物遗传改良国家重点实验室湖北武汉430000

棉花属于相对耐盐作物,但高盐胁迫同样会造成棉花产量和纤维品质的大幅下降。深入挖掘抗盐基因并解析棉花响应盐胁迫的分子机理,对加快棉花抗盐遗传改良育种进程具有重要意义。本研究从棉花响应盐胁迫的转录组数据中鉴定到一个受盐诱导... 详细信息

棉花属于相对耐盐作物,但高盐胁迫同样会造成棉花产量和纤维品质的大幅下降。深入挖掘抗盐基因并解析棉花响应盐胁迫的分子机理,对加快棉花抗盐遗传改良育种进程具有重要意义。本研究从棉花响应盐胁迫的转录组数据中鉴定到一个受盐诱导极显著下调表达的AP2/ERF转录因子GhTINY2,并分析了GhTINY2超表达拟南芥的抗盐表型和各生理指标。结果显示,在盐胁迫下,GhTINY2超表达植株的种子萌发率显著下降;脯氨酸、可溶性糖、叶绿素含量等均显著减少;多个盐胁迫响应基因显著下调表达;因而表现出更为严重的叶片萎蔫枯黄表型。通过分析GhTINY2超表达拟南芥中的RNA-seq数据,发现差异表达基因(DEGs)富集到叶绿素代谢、刺激响应等生物过程中,且DEGs均呈下调表达趋势。此外,在棉花中通过病毒诱导的基因沉默(VIGS)试验沉默GhTINY2后,TRV:GhTINY2植株在盐胁迫下叶绿素和脯氨酸含量显著增加,从而增强了棉花的抗盐性。综上,GhTINY2是棉花中一个负调控盐胁迫抗性的重要基因,未来将有望通过现代基因工程技术利用GhTINY2创制耐盐棉花材料。

关键词：棉花 GhTINY2 盐胁迫转录因子转基因

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Postoperative adverse cardiac events in acute myocardial infarction with high thrombus load and best time for stent implantation

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World Journal of Clinical Cases 2022年第7期10卷 2106-2114页

作者： Ming-feng zhuo Ke-Lian Zhang Xue-Bin Shen Wen-Can Lin Bin Hu Hua-Peng Cai Gang Huang Department of Emergency Shishi General HospitalShishi 362700Fujian ProvinceChina Department of Cardiovascular Quanzhou First HospitalQuanzhou 362000Fujian ProvinceChina Department of Cardiology Affiliated Nanping First HospitalFujian Medical UniversityNanping 353000Fujian ProvinceChina

BACKGROUND Myocardial infarction is one of the most common types of coronary heart *** is mainly caused by the rupture of coronary atherosclerotic plaque,which leads to platelet agglutination and *** occlusion of coronary arteries and vessels leads to insufficient myocardial blood supply,subsequently causing cardiac interstitial fibrosis,gradual enlargement of ventricles,and heart failure,which affects the quality of life and safety of *** To investigate the effects of emergency percutaneous interventional therapy(PCI)and delayed stenting in acute myocardial infarction with high thrombotic load and identify factors related to major adverse cardiovascular events(MACE).METHODS A total of 164 patients with acute myocardial infarction and high thrombotic load who received PCI were *** them,92 patients were treated with delayed stent implantation(delayed group)and 72 patients received emergency PCI(immediate group).Myocardial perfusion after stent implantation was compared between the two *** were followed up for 12 mo,and the occurrence of MACE was used as the *** and multivariate models were used to analyze the factors affecting MACE *** After stent implantation,66(71.74%)patients in the delayed group and 40(55.56%)patients in the immediate group had thrombolysis in myocardial infarction(TIMI)flow grade 3(P0.05).MACE occurred in 29 *** were statistically significant differences between the MACE and non-MACE groups in diabetes rate,TIMI grading,stent implantation timing,intraoperative use of tirofiban,and the levels of white blood cells(WBC),neutrophils,red blood cell distribution width(RDW),and uric acid,and high-sensitivity C-reactive protein(hs-CRP)at admission(P<0.05).Logistic regression analysis showed that TIMI grade 3 and intraoperativ

关键词： Coronary thrombosis Myocardial infarction Emergency Percutaneous coronary intervention Treatment delay Adverse cardiovascular events

Managing supply chain resilience in the era of VUCA

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Frontiers of Engineering Management 2021年第3期8卷 465-470页

作者： Ying GAO zhuo feng Shuibo ZHANG College of Management and Economics Tianjin UniversityTianjin 300072China School of Economics and Management Dalian University of TechnologyDalian 116024China

1 Introduction Today’s world has become volatile,uncertain,complex,and ambiguous(VUCA).In such a world,supply chains not only are embedded in VUCA environments but also increasingly exhibit VUCA features.A widely recognized description of the characteristics of VUCA was developed by Bennett and Lemoine(2014),outlined in the ***:An event encountered by a supply chain is unexpected or unstable;however,information on such an event is available and its impact is generally ***:The cause and effect of an event encountered by a supply chain are known;however,other information about the event is ***:Both the environment and the supply chain itself have many interconnected parts and variables;hence,connecting the cause and effect of an event is very ***:An event encountered by a supply chain is unexpected.

关键词： hence connecting unexpected