简介：Relationshipbetweentheδ13CoftreeringcellulosefromPinusKoraiensisandclimateparameterswasinvestigated.Asignificantlynegativecorrelationbetweenδ13Candmeanlow-cloudamountfromMaytoJulywasdiscovered,whichcontributestoreconstructingthemeanlow-cloudamountfromMaytoJulyatAntuinrecent200years.Periodicalsofquasi-8-year,quasi-4-yearandquasi-2-yearweredetectedbothinδ13Cseriesandinthereconstructedlowcloudamountserieswith95%confidencelevel.Quasi-8-yearperiodmayreflecttheintegratedinfluenceofsolaractivity,monsoonactivityandlocalregionalfactors.Quasi-4-yearandquasi-2-yearperiodsindicatetheinfluencesofENSOandQuasiBiennialOscillation(QBO)ofEastAsianmonsoon,respectively.

简介：在到地震预言的MODIS卫星遥感数据的应用程序的学习，论文第一次提出一个量的方法与反常亮度温度(BT)为象素估计比率为云移动的增加和一个初步的计划。原则是第一，无云的数据在时间，但是在不同的天内的一样的时期由一样的卫星观察了(通常1天到3天)是mosaiced得到晴朗天空的高比率，然后BT变化曲线和每个象素的mcan平方差别(MSD)从盖住的区域与数据被计算每天决定今日的BT数据作为标准用两倍MSD在某个象素由是正常的。为有反常BT增加的象素的比率能被与整个区域的全部的象素划分反常象素的全部的数字计算。在台湾区域的一系列最近的地震上的分析证明为有反常BT增加的象素的比率，通常在零附近波动，有突然的改进1天到在媒介强壮的地震前的20天。为识别地震预兆的一个新方法能被从MODIS卫星遥感随反常BT增加为象素分析比率的变化与经常的地震活动在区域通过特殊研究发现，这被期望红外线(红外)云的效果从被移开的信息到某个程度。

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简介：四lanthanide协作建筑群，也就是[行(2,3-DClBA)3(5,5-dmebipy)(H2O)]2(Ln=Sm(1),Eu(2)，Dy(3)，惊讶(4))；2,3-DClBA=2,3-dichlorobenzoate；5,5-dmebipy=5,5-dmethylbipyridine)被元素的分析，红外线的光谱学和单个水晶X光检查衍射综合并且描绘。调查结果显示建筑群3是一个dinuclear分子，并且中心Dy3+是八坐标的。每个dinuclear单位能被H债券和卤素卤素相互作用连接。建筑群2的光性质建议了Eu3+离子的典型强烈排出物。热分析证明建筑群在三分解了步：协作水然后第一被失去中立ligand5,5dmebipy被失去，最后，2,3-DClBAligand被失去。

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简介：AbstractObjective:To determine the pregnancy and neonatal outcomes of women who recovered from coronavirus disease 2019 (COVID-19) that developed in early pregnancy.Methods:This case series analyzed five pregnant women (26-33 years) whom recovered from COVID-19 which were developed in early pregnancy (6-27 weeks) and admitted at the Wuhan Union Hospital from January 15, 2020 to April 30, 2020. The clinical manifestation, laboratory examinations, treatment, pregnancy outcomes, maternal and neonatal severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) throat swab reverse transcription polymerase chain reaction test results, and SARS-CoV-2 antibody test results in neonates were reviewed. The placental pathology, placental angiotensin-converting enzyme 2 expression were studied by hematoxylin-eosin and immunohistochemistry staining, SARS-CoV-2 presence was examined by QT-PCR. We also followed up the infants at 3-6 months.Results:Three pregnant women were diagnosed with COVID-19 in early pregnancy (Cases 1-3), and two were serum immunoglobulin G positive asymptomatic cases (Cases 4 and 5). Cases 1-3 showed complete recovery after severe COVID-19. Case 3 was infected at 6 weeks of gestation during the first trimester and had induced medical abortion at 12 weeks of gestation. All neonates had no pneumonia, SARS-CoV-2 mRNA reverse transcription polymerase chain reaction and serum immunoglobulin M were negative, and immunoglobulin G were positive. All placental samples were negative for SARS-CoV-2 in the nucleic acid test. Placental pathology showed chronic ischemia changes. ACE-2 expressed in both placenta and decidua. The follow-up showed that the infants were healthy and asymptomatic at 3-6 months.Conclusion:No adverse outcomes was observed in our case series. However, systemic inflammatory responses to SARS-CoV-2 infection may cause placental injury. At the time of delivery after recovery from COVID-19, no SARS-CoV-2 positive results was found in the placenta in this case series.

简介：AbstractBackground:Endoscopic ultrasound (EUS)-guided transmural drainage for pancreatic fluid collections (PFCs) has become the first-line treatment with quicker recovery and more minor injury compared with surgery and percutaneous drainage. The efficacy of stents implantation and drainage for different PFCs remains controversial, especially lumen-apposing metal stents (LAMS). This study aimed to compare the efficacy and safety of LAMS drainage for pancreatic pseudocysts (PPC) and walled-off necrosis (WON).Methods:A meta-analysis was performed for LAMS drainage for WON and PPC by systematically searching PubMed, Cochrane, and Embase databases from January 2010 to January 2020. From 2017 to 2019, 12 patients who were treated with LAMS drainage for PFCs in our medical center were also reviewed and included in this study.Results:Combining 11 copies of documents with the data from our medical center, a total of 585 patients with PFCs were enrolled in this meta-analysis, including 343 patients with WON and 242 with PPC. The technical success rate in WON is not significantly different from that of PPC (P = 0.08 > 0.05). The clinical success of LAMS placement was achieved in 99% vs 89% in PPC and WON, respectively (RR = 0.92, 95% CI: 0.86-0.98, P = 0.01 < 0.05). The further intervention of direct endoscopic necrosectomy was required by 60% of patients in WON group. There was no significant difference in the incidence of adverse events, including infection, bleeding, stent migration and stent occlusion, after LAMS placement between WON and PPC.Conclusions:Endoscopic ultrasound-guided LAMS for PFCs are feasible, effective with preferable technical and clinical success rates. The clinical effect of LAMS on PPC is slightly better than that of WON, but its adverse reactions still need to be verified in a large-sample prospective study.

简介：新奇双1:11系列arsenotungstate，[CuI(phen)2]5H6[Sm(AsW11O39)2]

简介：Inthispaper,weshowthatnewmodifieddoublecosinetrigonometricsumsintroducedin[1]areinappropriate,theclassofdoublesequencesJdintroducedthereisunusableforsuchsumsandconsequentlytheresultsobtainedinitarecompletelyincorrect.WehereintroduceappropriatemodifieddoublecosinetrigonometricsumsmakingtheclassJdusableconsideringaparticulardoublecosinetrigonometricseries.