摘要： Objective:To investigate the sexual relationship and sexual health of elderly patients with cardiovascular disease and their spouses,as well as to explore the relationship between sexual health and the quality of life.Methods:A total of 206 CHD patients and their spouses(N=206)as well as 238 age-and gender-matched healthy people were recruited and investigated by using a seilf-designed sexual relationship and sexual health questionnaire and the SF-36 questionnaire;data analysis and comparison were carried out by using SPSS 22.0.Results:The scores of perceived health,marital satisfaction,sexual satisfaction,sexual function,and quality of life were all significantly different among elderly CVD patients,then-spouses,and healthy people(F=3.894,p<0.05).There was a significant correlation between perceived health,marital satisfaction,sexual satisfaction,and sexual function with quality of life(p<0.05).Conclusion:Sexual behavior is an important aspect of quality of life.The sexual relationship,sexual health,and quality of life of elderly patients with cardiovascular disease and their spouses were significantly lower than those of healthy people.It is recommended that more attention should be paid on the sexual relationship and sexual health of these patients and their spouses,with counselling offered when needed.

摘要： 二維半導(dǎo)體材料是一類新興的新材料,具有廣泛的電學(xué)性能和潛在的應(yīng)用價(jià)值。本文以S和MoO3粉末為原料,利用化學(xué)氣相沉積法(Chemical Vapor Deposition, CVD),在SiO2/Si片上制備了高質(zhì)量、大面積的單層MoS2單晶樣品。利用XRD、OM、EDS、TEM、AFM及半導(dǎo)體光電特性分析設(shè)備,對(duì)不同制備樣品的表面形貌、晶體結(jié)構(gòu)、組成成份、樣品厚度及光電特性進(jìn)行了測(cè)試分析。結(jié)果發(fā)現(xiàn),制備的三角形的單層及少層MoS2單晶主要呈現(xiàn)六角晶系結(jié)構(gòu),且邊界清晰,表面光滑,有較好的透光性,最大尺度可達(dá)250 μm,MoS2單晶生長(zhǎng)中的硫化反應(yīng)過(guò)程符合VLS生長(zhǎng)機(jī)制。在不同生長(zhǎng)條件中,反應(yīng)物中的S/MoO3的質(zhì)量比和反應(yīng)溫度是影響單層MoS2單晶樣品生長(zhǎng)類型的主要影響因素。分析發(fā)現(xiàn),制備單層MoS2單晶的最佳S/MoO3質(zhì)量比為1000/30,而最佳沉積溫度為900°C。測(cè)試發(fā)現(xiàn),由單層MoS2單晶樣品制備的光電器件具有很高的光電靈敏度和較好的光電響應(yīng)特性。

摘要： 二維(2D)半導(dǎo)體薄膜材料作為當(dāng)代光電子器件領(lǐng)域的主力軍,大面積薄膜材料的制備則成為亟待解決的熱點(diǎn)問(wèn)題。文章通過(guò)一種硫(S)化預(yù)生長(zhǎng)的氧化鉬(MoO_(3))的方法實(shí)現(xiàn)大面積二硫化鉬(MoS_(2))薄膜材料的制備。區(qū)別于傳統(tǒng)化學(xué)氣相沉積(CVD)方法生長(zhǎng)材料隨機(jī)成核的特性,文章設(shè)計(jì)利用提前在襯底上預(yù)生長(zhǎng)MoO_(3)作為Mo源,以固定MoS_(2)薄膜的成核位點(diǎn)。研究結(jié)果表明,該方法可實(shí)現(xiàn)雙層的大面積MoS_(2)薄膜。進(jìn)一步,將制備的雙層大面積MoS_(2)薄膜轉(zhuǎn)移到叉指電極上進(jìn)行光電性能研究,在532 nm的激光照射下,實(shí)現(xiàn)103.71 mA/W的響應(yīng)度及88μs的快響應(yīng)速度。預(yù)計(jì)文章的實(shí)驗(yàn)設(shè)計(jì)可推廣到其他大面積二維薄膜材料的制備中。

摘要： 金剛石探測(cè)器具有體積小、抗輻照能力強(qiáng)、時(shí)間響應(yīng)快等優(yōu)點(diǎn),在核輻射領(lǐng)域應(yīng)用優(yōu)勢(shì)顯著。早期金剛石核輻射探測(cè)器均采用天然金剛石材料,化學(xué)氣相沉積(chemical vapor deposition,CVD)金剛石人工合成技術(shù)的進(jìn)步,極大地促進(jìn)了金剛石核輻射探測(cè)器的發(fā)展與應(yīng)用。本文從CVD人造金剛石材料入手,分析了制約金剛石探測(cè)器性能的雜質(zhì)與缺陷、CVD金剛石的合成工藝、探測(cè)器級(jí)金剛石中雜質(zhì)與缺陷的表征方法,并基于載流子遷移率與壽命乘積、探測(cè)器的電荷收集效率等性能指標(biāo),總結(jié)了CVD金剛石中的雜質(zhì)與缺陷對(duì)探測(cè)器性能的影響規(guī)律,介紹了國(guó)外金剛石核輻射探測(cè)器的應(yīng)用現(xiàn)狀并展望了國(guó)內(nèi)金剛石核輻射探測(cè)器的發(fā)展前景。

摘要： 血管內(nèi)皮功能障礙是動(dòng)脈粥樣硬化(動(dòng)脈斑塊或阻塞)、心臟病發(fā)作及中風(fēng)的早期預(yù)警信號(hào),血管內(nèi)皮功能的評(píng)估已成為心血管疾病(CVD)研究的有效工具。血管內(nèi)皮功能的研究可用于患者的干預(yù)治療,并作為評(píng)估新治療策略的替代標(biāo)志物。文章回顧了國(guó)內(nèi)外不斷增長(zhǎng)的相關(guān)文獻(xiàn),以評(píng)估血管內(nèi)皮功能的臨床價(jià)值,供相關(guān)學(xué)者和臨床醫(yī)生參考借鑒。

摘要： 單層二硫化鎢(WS_(2))具有約2.0e V的直接帶隙,還具有優(yōu)異的光電性能,是二維(2D)納米光電子器件和光電傳感器領(lǐng)域的重點(diǎn)研究對(duì)象,但晶體質(zhì)量較高的單層WS_(2)的氣相生長(zhǎng)仍然具有研究?jī)r(jià)值。在此,我們提出了一種以WO_(3)為前驅(qū)體,生長(zhǎng)單層WS_(2)納米片的CVD方法。采用AFM、Raman和OM進(jìn)行表征,測(cè)試結(jié)果證明,生長(zhǎng)的WS_(2)薄片具有高質(zhì)量的晶體結(jié)構(gòu)。精確控制WO_(3)前驅(qū)體的量,可為CVD生長(zhǎng)高質(zhì)量的WS_(2)納米片提供一種新的思路。

摘要： 心血管疾病(CVD)是目前世界上發(fā)病率和死亡率最高的疾病之一。盡管在CVD的診斷、治療和預(yù)后方面已經(jīng)取得了一些進(jìn)展,但仍需尋找新的生物診斷標(biāo)志物和治療方法,以降低CVD的發(fā)病率及死亡率[1-2].

摘要： CVD工藝在工業(yè)生產(chǎn)中得到廣泛應(yīng)用,但CVD產(chǎn)物卻受到許多參數(shù)的影響,而這些參數(shù)的變化如何影響沉積質(zhì)量則需要重復(fù)試驗(yàn)才能得出結(jié)論。在CVD領(lǐng)域中引入計(jì)算流體力學(xué)(CFD)方法來(lái)對(duì)CVD過(guò)程進(jìn)行數(shù)值模擬研究可以達(dá)到有效降低研發(fā)成本、提高沉積效率等目的。簡(jiǎn)要介紹了計(jì)算流體力學(xué)的概念;接著以AN?SYS Fluent軟件為例,簡(jiǎn)述了計(jì)算流體力學(xué)仿真分析的方法;最后分別綜述了計(jì)算流體力學(xué)方法在建立CVD反應(yīng)的研究模型、CVD反應(yīng)器結(jié)構(gòu)改進(jìn)以及CVD工藝優(yōu)化等方面的應(yīng)用。

摘要： Micro-supercapacitors(MSCs)are attractive electrochemical energy storage devices owing to their high power density and extended cycling stability.However,relatively low areal energy density still hinders their practical applications.Here,an asymmetric Mg ion MSC with promising high energy density is fabricated.Firstly,indium tin oxide(ITO)NWs were synthesized by chemical vapor deposition as the excellent current collector.Subsequently,nanostructured Mn_(3)O_(4)and Ppy@FeOOH were deposited on the laser-engraved interdigital structure ITO NWs electrodes as the positive and negative electrodes,respectively.Beneficial from the hierarchical micro-nano structures of active materials,high conductive electron transport pathways,and charge-balanced asymmetric electrodes,the obtained MSC possesses a high potential window of 2.2 V and a high areal capacitance of 107.3 mF cm^(-2)at 0.2 mA cm^(-2).The insitu XRD,VSM,and ex-situ XPS results reveal that the primary energy storage mechanism of Mg ions in negative FeOOH electrode is Mg ions de-/intercalation and phase transition reaction of FeOOH.Furthermore,the MSC exhibits a high specific energy density of 71.18μWh cm^(-2)at a power density of 0.22 mWh cm^(-2)and capacitance retention of 85%after 5000 cycles with unvaried Coulombic efficiency.These results suggest promising applications of our MSC in miniaturized energy storage devices.

摘要： 硬質(zhì)涂層是指一類具有高硬度,高溫抗氧化性,好耐磨性等優(yōu)良性能的涂層。將硬質(zhì)涂層涂敷在刀具工作區(qū)域的表面,可以有效降低刀具與工件之間的摩擦磨損以及隔絕外界工作區(qū)域的高溫環(huán)境。涂層的使用可以極大地延長(zhǎng)刀具的使用壽命,適應(yīng)更加嚴(yán)峻苛刻的工作環(huán)境。本文綜述了常見(jiàn)Ti基和Cr基涂層材料發(fā)展及應(yīng)用現(xiàn)狀,以及其PVD,CVD工藝的發(fā)展,對(duì)于初學(xué)者進(jìn)入涂層領(lǐng)域有較大幫助。