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简介：自20世纪八十年代以来，以专业内容为基础的英语语言教学在欧美大陆和一些非洲国家逐渐流行，并成为英语语言教学的主要方法。在中国和其他一些亚洲国家，专业与英语结合的教学方式也得到广泛应用。但是，许多教师和研究人员对于该教学法在实践中存在的多种方式，以及这些方式之间的关系还存在不解或者误解。通过对以专业内容为基础的英语教学与国内流行的二语教学，专业应用研究与双语教学之间的区别与联系，分析了以专业内容为基础的英语教学在中国高等教育中的优势以及该教学法中教师，特别是语言教师所起的作用。

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简介：AbstractBackground:The 2019 novel coronavirus (2019-nCoV) causing an outbreak of pneumonia in Wuhan, Hubei province of China was isolated in January 2020. This study aims to investigate its epidemiologic history, and analyze the clinical characteristics, treatment regimens, and prognosis of patients infected with 2019-nCoV during this outbreak.Methods:Clinical data from 137 2019-nCoV-infected patients admitted to the respiratory departments of nine tertiary hospitals in Hubei province from December 30, 2019 to January 24, 2020 were retrospectively collected, including general status, clinical manifestations, laboratory test results, imaging characteristics, and treatment regimens.Results:None of the 137 patients (61 males, 76 females, aged 20-83 years, median age 57 years) had a definite history of exposure to Huanan Seafood Wholesale Market. Major initial symptoms included fever (112/137, 81.8%), coughing (66/137, 48.2%), and muscle pain or fatigue (44/137, 32.1%), with other, less typical initial symptoms observed at low frequency, including heart palpitations, diarrhea, and headache. Nearly 80% of the patients had normal or decreased white blood cell counts, and 72.3% (99/137) had lymphocytopenia. Lung involvement was present in all cases, with most chest computed tomography scans showing lesions in multiple lung lobes, some of which were dense; ground-glass opacity co-existed with consolidation shadows or cord-like shadows. Given the lack of effective drugs, treatment focused on symptomatic and respiratory support. Immunoglobulin G was delivered to some critically ill patients according to their conditions. Systemic corticosteroid treatment did not show significant benefits. Notably, early respiratory support facilitated disease recovery and improved prognosis. The risk of death was primarily associated with age, underlying chronic diseases, and median interval from the appearance of initial symptoms to dyspnea.Conclusions:The majority of patients with 2019-nCoV pneumonia present with fever as the first symptom, and most of them still showed typical manifestations of viral pneumonia on chest imaging. Middle-aged and elderly patients with underlying comorbidities are susceptible to respiratory failure and may have a poorer prognosis.

简介：TheMaomingBasinisoneamongstagroupofCretaceous-TertiarybasinsinSouthChina.347sampleswerecollectedfromdrillcoresMRandMBandsectionMS(110°54ˊE,21°45ˊN).MostofthelithologicalunitsareofTertiaryage.ThecoresincludetheLaohuling,Shangun,HuangniulingandYouganwoformations.TheMRcore(874minlength)hasrecordedthepolarityhistoryfromNormalZone18toNormalZone11ontheGeomagneticPolarityTimeScale(GPTS).Thestratawereformedfromabout42Mato32Ma,thatisfromLateEocenetoEarlyOligocene.Ameansedimentationrateofthisstratigraphiccolumnis8.1cm/ka.

简介：trifluoromethyl的极其快的准备第三级的白酒在溶剂下面从甲基酉同类和trifluoromethyl酉同类被完成了由生气丁间醇醛反应的免费条件。反应被在周围的温度磨方法在高收益(多达95%)给-trifluoromethyl--hydroxyl酉同类面对普通的无机的底完成。

简介：ＣｈｉｎａＴｅｒｔｉａｒｙＩｎｄｕｓｔｒｙＦｉｒｓｔＮａｔｉｏｎａｌＣｅｎｓｕｓ：ＳｅｌｅｃｔｅｄＳｕｍｍａｒｙＳｔａｔｉｓｔｉｃｓ￥／／Ｉｎｌａｔｅ１９９４，Ｃｈｉｎａｃｏｍｐｌｅｔｅｄｉｔｓｆｉｒｓｔｎａｔｉｏｎａｌｃｅｎｓｕｓｏｆｉｔｓｔｅｒｔ...

简介：Cyclicsixmembereda-aminonitrilehaveprovedtobeveryversatilesyntheticintermediatesandhavebeenwidelyusedintheconstructionofalargenumberofindolealkaloids.Inordertoobtainsomeinformationaboutthemechanisnofelectrochemicalsynthesisofaaminonitrile.ElectrochemistrybehaviorsthatincludecyclicvoltammetryandlinearsweepvoltammetryofcyclictertiaryamineswhichincludingN-benzylpiperidine(NBP),1-(l-Methoxycarbonylethyl)piperidine(MCEP),N-methylcarbonylppiperidine(NMCP),Nethylpiperidine(NEP)wasstudied.

简介：有限信息在在在中央伊朗和另外的中东的国家作为主要土壤父母材料在第三级的沉积上开发的土壤的palygorskite的分发和起源上是可得到的。学习是在土壤决定palygorskite的分发和起源，并且识别在土壤的影响palygorskite分发学习了的主要土壤性质的这的目的在第三级的沉积上发展了。十六土壤侧面发展了在上古新，始新世，渐新世，渐新世中新世，中新世并且上新世沉积被X光检查衍射分析，传播电子显微镜，和扫描电子显微镜学学习。包括粒子尺寸分发，pH，电的传导性，器官的碳，石膏，碳酸盐，和可溶的Si，Ca和Mg的土壤和沉积的物理化学的特征是坚定的。主要部件分析被用来证实在palygorskite和土壤的物理化学的特征之间的关系学习了。结果证明在学习区域的所有土壤的那泥土部分被palygorskite统治。palygorskite的最高的数量在碳酸盐和石膏的同时的累积发生了的地平线被发现。palygorskite的有限数量在撒利族、钙的地平线被发现。Palygorskite似乎具有在所有土壤的表面地平线的eolian起源。当在土壤影响palygorskite的分发和开始的最重要的因素学习了，用主要部件分析，可溶的Mg/Ca比率，pH，可溶的Si和石膏，内容被识别。结果可能从蒸发流动很高的在答案由降水建议palygorskite的neoformation。然而，在在中央伊朗在第三级的沉积上开发的土壤的palygorskite似乎具有继承并且pedogenic起源。

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简介：TertiarysandstonescollectedfromsouthwestSarawak,Malaysia,wereanalyzedtodeciphertheirprovenance,weathering,andtectonicsetting.Thestudiedsandstoneshaveasublitharenitecompositionandaredominantlycomposedquartzwithlittlemicaandfeldspar,andasmallamountofvolcanicfragments.Thesesandstonesweregenerallyderivedfromquartz-richrecycledorogenicsources.TheyhaverelativelyhighSiO2contentwithlowNa2O,CaO,MnO,andMgOcontents.ValuesofChemicalIndexofAlteration（CIA）oftheserocksamplesvaryfrom71to93,withanaverageof81,implyingintensechemicalalterationduringweathering.AfelsicigneoussourceissuggestedbyalowconcentrationofTiO2comparedtoCIA,enrichmentofLightRareEarthElements,depletionofHeavyRareEarthElements,andnegativeEuanomalies.AfelsicoriginisfurthersupportedbyaEu/Eu*rangeof0.65–0.85andhighTh/Sc,La/Sc,La/Co,andTh/Coratios.ThisworkpresentsthefirstreportedgeochemicaldataofTertiarysandstonesoftheSarawakBasin.Thesedataledustoconcludethatthesandstonesweredislodgedfromrecycledorogenicsourcesanddepositedinaslowlysubsidingriftedbasininapassivecontinentaltectonicsetting.

简介：AbstractBackground:Laryngopharyngeal reflux disease (LPRD) is a condition with nonspecific symptoms and most of times patients present late with advanced disease which may pre-dispose to malignancy. The magnitude and clinical characteristics of this condition are not well known among patients attending Otorhinolaryngology services in Tanzania.Materials and methods:This was a hospital based descriptive cross sectional study, conducted in the wards and clinics of Otorhinolaryngology department of Muhimbili National Hospital. Patients with symptoms of Laryngopharyngeal reflux disease were included in the study. Data was collected using questionnaires and clinical examination forms, were processed and analysed by using SPSS. Results presented in frequency tables, cross tabulations and figures.Results:This study recruited 256 participants among them males were 131(51.2%).The mean age was (41.38 ± 13.94) years. Prevalence of Laryngopharyngeal reflux disease was 18.4% without gender predilection. The commonest symptoms were globus sensation, hoarseness of voice and excessive urge to clear the throat with 95.7%, 88.1% and 83.0% respectively while the most observed signs were thick endolaryngeal mucus, Vocal cord oedema and partial ventricular obliteration with 90.9%, 88.6% and 72.7% respectively. Lying down less than two hours after meal and spices foods consumption were the leading risk factors. Hypertension and Diabetes Mellitus type 2 were the most prevalent co morbid conditions associated with Laryngopharyngeal reflux disease.Conclusion:The prevalence of Laryngopharyngeal reflux disease is high among patients attending Otorhinolaryngology services at Muhimbili national hospital. All patients with Laryngopharyngeal reflux disease related symptoms should get thorough evaluation for early diagnosis and treatment.