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Regularity of Structural Superplasticity of Hypoeutectoid Steel

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journal of Iron and Steel Research International 2005年第4期12卷 60-62页

作者： YANgYun-lin WENjiu-ba HenanUniversityofScienceandTechnology Henan471003China

The curve of the relation between fracture elongation and temperature for unltrafine grained low alloy hypoeutectoid steels generally shows that three peaks occur at temperatures just below A_ c1, between A_ c1 and A_ c3, and just above A_ c3, When these steels are subjected to superplastic tensile test at different temperatures, the value of the last one is the lowest and the other two peaks are different one from another depending on components, microstructures and deformation conditions of the steels.

关键词： hypoeutectoid steel structural superplasticity superplastic temperature

Treatment strategies for patients with HER2-positive gastric cancer

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Cancer Biology & Medicine 2023年第12期20卷 934-941页

作者： Feixue Wang Yi ba Department of Medical Oncology Department of Cancer CenterPeking Union Medical College HospitalChinese Academy of Medical SciencesBeijing 100032China Department of gI Medical Oncology Tianjin Medical University Cancer Institute&HospitalNational Clinical Research Center for CancerTianjin’s Clinical Research Center for CancerTianjin Key Laboratory of Digestive CancerKey Laboratory of Cancer Prevention and TherapyTianjin 300060China

gastric cancer (gC) is a major health concern globally,ranking fifth in frequency and fourth in cancer-associated *** China,an estimated 396,500 new cases are diagnosed each year,and late-stage disease comprises more than 80%of *** of late diagnosis and heterogeneous characteristics,the prognosis of gC remains *** patients with advanced disease,traditional chemotherapy has been the mainstay of treatment,but its clinical outcomes are far from satisfactory,with a 5-year survival rate below 10%.

关键词： patients cancer gastric

Sociodemographic,biological,and psychosocial correlates of light-and moderate-to-vigorous-intensity physical activity during school time,recesses,and physical education classes

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journal of Sport and Health Science 2019年第2期8卷 177-182页

作者： Bruno g.g.da Costa Kelly S.da Silva jaqueline A.da Silva giseli Minatto Luiz R.A.de Lima Edio L.Petroski Research Centre in Physical Activity and Health Federal University of Santa Catarina Department of Physical Education Federal University of Santa Catarina Research Centre in Kineanthropometry and Human Development Federal University of Santa Catarina

background: Identifying factors associated with physical activity(PA) is useful in planning interventions and policies. The aim of this study was to identify sociodemographic, biological, and psychosocial factors associated with PA performed in school ***: data collected for the present study included gender, age, socioeconomic status, body fat percentage, aerobic fitness, self-efficacy, attitudes,peer and parental support, and perception of school environment. Dependent variables were light-intensity PA(LPA) and moderate-to-vigorousintensity PA(MVPA) performed during school time, recesses, and physical education(PE) classes. Multiple regression analyses were ***: Participating adolescents(n = 567, 53% female, 12.9 ± 5.3 years) spent 5% of school time in MVPA and 27% in LPA, 15% of recesses in MVPA and 44% in LPA, and 16% of PE classes in MVPA and 41% in LPA. Boys engaged in more MVPA in all categories. Age was inversely related with MVPA and LPA in all periods, whereas body fat percentage was inversely related with MVPA in school time and PE classes. Attitude was inversely related with MVPA in all periods and with LPA in recesses. Considering PA to be good and enjoyable was positively associated with MVPA in school ***: Adolescents spent little time in PA during school. Future interventions should implement enjoyable activities at school.

关键词： Accelerometer Adolescents Attitude Physical education Public health Self-efficacy

Increased syndecan-1 and glypican-3 predict poor perinatal outcome and treatment resistance in intrahepatic cholestasis

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Hepatobiliary & Pancreatic Diseases International 2020年第3期19卷 271-276页

作者： basak gümüs güler Sibel Ozler Department of Health Sciences Istinye UniversityIstanbul 34010Turkey Department of Perinatology Selcuk University Faculty of MedicineKonya 42130Turkey

background:Intrahepatic cholestasis of pregnancy(ICP)increases the risk of adverse pregnancy *** study aimed to explore the association between serum syndecan-1 and glypican-3 levels and the adverse perinatal outcome as well as the responses to the treatment of ursodeoxycholic acid(UDCA).Methods:This prospective,case control study included 88 pregnant women(44 women with ICP and 44 healthy controls).The primary end points were the perinatal outcome and the response to UDCA therapy.A logistic regression model was used to identify the independent risk factors of adverse pregnancy outcomes and reduced response to UDCA ***:Women with ICP had significantly higher serum syndecan-1(1.27±0.36 ng/m L vs.0.98±0.50 ng/m L;P=0.003),glypican-3(1.78±0.13 ng/m L vs.1.69±0.16 ng/m L;P=0.004),AST(128.59±1.44 vs.13.29±1.32 U/L;Pglypican-3(OR=8.465,95%CI:3.372–21.248;P=0.007),ALT(OR=1.382,95%CI:1.131–1.690;P=0.002),and postprandial bile acid(Pba)(OR=3.392,95%CI:1.003–12.869;P=0.026)were correlated to *** adverse neonatal outcome was related to increased glypican-3(OR=4.275,95%CI:2.726–5.635;P=0.039),and Pba(OR=3.026,95%CI:1.069–13.569;P=0.037).Increases of syndecan-1(OR=7.464,95%CI:2.130–26.153,P=0.017)and glypican-3(OR=6.194,95%CI:2.951–13.002;P=0.025)were the risk factors of decreased response to UDCA ***:Syndecan-1 and glypican-3 might be powerful determinants in predicting adverse perinatal outcome in patients with ICP,and they can be used to predict the response to the UDCA treatment.

关键词： Intrahepatic cholestasis of pregnancy Syndecan-1 glypican-3 Adverse perinatal outcome Response to UDCA

黔桂地区20年间植被时空变化及其对地理环境的响应

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水土保持研究 2025年第2期32卷 255-262页

作者：冯达段亚锋李婷婷湖南省测绘科技研究所长沙410007 湖南省长沙生态环境监测中心长沙410000

[目的]研究黔桂地区植被时空变化及其对地理环境的响应,为区域生态恢复工程效益评估和进一步恢复提供科学参考。[方法]基于NDVI数据,结合植被本底值和变化趋势,将区域植被分为9种状态类型;利用均一化面积指数分析不同状态类型植被对岩... 详细信息

[目的]研究黔桂地区植被时空变化及其对地理环境的响应,为区域生态恢复工程效益评估和进一步恢复提供科学参考。[方法]基于NDVI数据,结合植被本底值和变化趋势,将区域植被分为9种状态类型;利用均一化面积指数分析不同状态类型植被对岩性、地貌、土壤和地形位指数等地理特征的响应。[结果](1) 2001—2020年NDVI年均值波动增加,平均趋势率为1.8×10^(-3)/a,恢复趋势、退化趋势和稳定状态的植被面积分别占30.8%,9.1%和60.1%;(2)稳定型植被在低、中、高覆盖植被中面积占比逐渐降低,而退化型和恢复型的面积占比均依次增加;(3)纯碳酸盐岩上高覆盖植被均一化面积指数低于均值、低覆盖植被高于均值,而碎屑岩正好相反;(4)植被对红壤和水稻土的响应与本底覆盖度相关;(5)低覆盖稳定型植被在岩溶峡谷区集中分布,峰丛洼地的高覆盖植被优势明显;(6)低覆盖植被与地形位的响应关系明显,中覆盖植被受地形位影响较小。[结论]黔桂地区植被总体呈改善趋势,不同植被状态类型空间分布不均,赤红壤和岩溶峡谷上的植被相对稳定,黄壤区和峰林平原的高覆盖植被单向退化较为明显,高覆盖和低覆盖植被分别集中分布于地形位中值和低值区。

关键词：黔桂地区喀斯特植被状态类型地理环境响应

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定窑遗址出土制瓷原料的科学分析

光谱学与光谱分析 2025年第1期45卷 72-81页

作者：陈殿崔剑锋秦大树黄信李鑫北京师范大学历史学院陶瓷考古与艺术研究中心北京100875 考古科学教育部重点实验室(北京大学) 北京100871 浙大城市学院考古学系浙江杭州310015 河北省文物考古研究院河北石家庄050031 中国社会科学院考古研究所北京100101

首次通过窑址发掘出土的制瓷原料,复原了定窑不同时代的胎釉配方。对2009年定窑作坊遗址考古发掘所出五代至宋金时期二十余种制瓷原料开展了ED-XRF成分分析和XRD结构分析等光谱学分析。ED-XRF成分分析显示,这些原料可能包括单一原料和... 详细信息

首次通过窑址发掘出土的制瓷原料,复原了定窑不同时代的胎釉配方。对2009年定窑作坊遗址考古发掘所出五代至宋金时期二十余种制瓷原料开展了ED-XRF成分分析和XRD结构分析等光谱学分析。ED-XRF成分分析显示,这些原料可能包括单一原料和混合原料两种。其中单一原料包括岩石、粘土以及草木灰。混合原料则包括胎料和釉料两种。XRD结构分析表明用于定窑白瓷生产高岭土类原料是含有蒙脱石和方解石的伴生石英的长石类矿物原料。高铁粘土类原料由于铁含量特别高,应当是用于配黑釉的粘土。钙质原料的分析与康葆强等学者对定窑配釉用的灰料可能使用了40%的白灰和60%的松木灰配制的结论相同。同时,还发现了釉灰,即草木煅烧石灰石后形成的混合灰料。在分析定窑白瓷釉时,认为五代的白瓷釉可能使用了釉灰配制,因此定窑釉灰的使用可能推早到五代,这是目前发现使用釉灰配釉最早的实例。对制胎原料XRD晶相分析的结果表明,除了石英和高岭石占主要比重外,还含有长石、蒙脱石、方解石等岩石类矿物。从对单一原料的X射线衍射的分析结果看,石英是粘土以及岩石这类单一原料中都含有的一类矿物,因此可能石英并非必须要添加的胎体原料。石英和高岭石是粘土原料中的主要成分,因此制胎原料应该主要以岩石类原料和粘土作为主要配料。定窑细白瓷胎料可能使用了粘土类原料配合第一类岩石类原料的配方,其配比在金代时大约为1∶1左右,北宋时期可能约为7∶3(粘土∶岩石),五代时大概为6∶4左右。对制釉原料分析结果表明,定窑配釉原料是岩石类原料与釉灰配合形成的,五代、北宋时岩石和灰的比例约为9∶1,金代时石:灰达到了9.5∶0.5。这使得我们对定窑鼎盛时期的白瓷胎釉配方有了更加清晰的了解,从而为开展定窑的复烧提供了确凿的依据。

关键词：定窑制瓷原料光谱学分析

Sleep as a window to understand and regulate Alzheimer's disease:emerging roles of thalamic reticular nucleus

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Neural Regeneration Research 2025年第6期20卷 1711-1712页

作者： Haoqi Sun Shiqian Shen Robert j.Thomas M.Brandon Westover Can Zhang Department of Neurology Beth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA Center for Translational Pain Research Department of AnesthesiaCritical Care and Pain MedicineMassachusetis General HospitalHarvard Medical SchoolBostonMAUSA Division of Pulmonary Critical Care and Sleep MedicineDepartment of MedicineBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA genetics and Aging Research Unit McCance Center for Brain HealthMass General Institute for Neurodegenerative DiseaseDepartment of NeurologyMassachusetts General HospitalHarvard Medical SchoolBostonMAUSA

Introduction:Alzheimer 's disease(AD) is a common neurodegenerative disorder and the primary cause of dementia. Considerable evidence supports the “amyloid hypothesis,” stating that the pathogenesis of AD is primarily caused by the deposition of amyloid-β(Aβ), which drives tau phosphorylation, neuroinflammation, and neurodegeneration in the brain. The amyloid hypothesis is strengthened by the significant and moderate benefit of lecanemab, a humanized antibody through an anti-amyloid mechanism,showing slowed clinical decline(van Dyck et al.,2023). The recent positive results of anti-amyloid trials have brought back focus on the amyloid hypothesis through biochemical, genetic, and pharmacological approaches(Zhang, 2023).

关键词： Alzheimer inflammation hypothesis

On the Space bv_p(F) of Sequences of p-bounded Variation of Fuzzy Numbers

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Acta Mathematica Sinica,English Series 2008年第7期24卷 1205-1212页

作者： zer TALO Feyzi ba■AR Fatih niversitesi Fen-Edebiyat FakltesiMatematik BlmBykekmece Kamps 34500-stanbulTrkiye

Recently, the space bvp of real or complex numbers consisting of all sequences whose differences are in the space lp has been studied by basar, Altay [Ukrainian Math. j. 55（1）（2003）, 136-147], where 1 ≤ p ≤ ∞. The main purpose of the present paper is to introduce the space bvp（F） of sequences of p-bounded variation of fuzzy numbers. Moreover, it is proved that the space bvp（F） includes the space lp（F） and also shown that the spaces bvp（F） and lp（F） axe isomorphic for 1 ≤ p ≤∞. Furthermore, some inclusion relations have been given.

关键词： sequence of fuzzy numbers space of difference sequences isomorphic spaces and inclusion relations

geochemical,mineralogical,and petrological analyses for the interpretation of the sedimentary environment of the Middle-Late Ordovician Majiagou Formation(northern China)as a tool for more effective gas exploration

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Petroleum Science 2022年第6期19卷 2519-2532页

作者： jie gao da-Wei Lv A.j.(Tom) van Loon Dun Wu Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals Shandong University of Science and TechnologyQingdaoShandong266590China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyShandong266071China College of Earth Science and Engineering Shandong University of Science and TechnologyShandong266590China Exploration Research Institute Anhui Provincial Bureau of Coal GeologyHefeiAnhui230088China

Core samples from the deeply buried Ordovician Majiagou Formation below the Huainan Coalfield(E China) have been investigated for their carbonate types,major and trace elements(including rare earth elements) and C and O isotopes,The objective was to get a better insight into the possible occurrences of gas(and possibly oil) derived from Carboniferous *** was found that the carbonates are dolomites with strongly varying amounts of CaO and *** low concentrations of SiO_(2),Al_(2)O_(3),and Fe_(2)O_(3)indicate deposition in a normal marine environment with little terrigenous input,The Na_(2)O/K_(2)O,Fe/Mn and Sr/ba ratios,as well as the ga values indicate mainly a marine salinity and a hot and humid *** slight depletion of Ce and Eu,the depletion of heavy rare earth elements(HREE) and the enrichment of light rare earth elements(LREE) indicate deposition in a reducing *** thus appears that the Majiagou Formation below the Huainan Coalfield closely resembles that in the eastern part of the Ordos basin,where several gas reservoirs are present,so that the Majiagou Formation under the Huainan Coalfield represents a promising target for hydrocarbon exploration.

关键词： Majiagou Formation Middle Ordovician Major-element analysis REE analysis Trace-element analysis Hydrocarbon exploration