Applications of Huang–Rhys theory in semiconductor optical spectroscopy

A brief review of Huang–Rhys theory and Albrechtos theory is provided,and their connection and applications are discussed.The former is a first order perturbative theory on optical transitions intended for applications such as absorption and emission involving localized defect or impurity centers,emphasizing lattice relaxation or mixing of vibrational states due to electron–phonon coupling.The coupling strength is described by the Huang–Rhys factor.The latter theory is a second order perturbative theory on optical transitions intended for Raman scattering,and can in-principle include electron–phonon coupling in both electronic states and vibrational states.These two theories can potentially be connected through the common effect of lattice relaxation – non-orthonormal vibrational states associated with different electronic states.Because of this perceived connection,the latter theory is often used to explain resonant Raman scattering of LO phonons in bulk semiconductors and further used to describe the size dependence of electron–phonon coupling or Huang–Rhys factor in semiconductor nanostructures.Specifically,the A term in Albrechtos theory is often invoked to describe the multi-LO-phonon resonant Raman peaks in both bulk and nanostructured semiconductors in the literature,due to the misconception that a free-exciton could have a strong lattice relaxation.Without lattice relaxation,the A term will give rise to Rayleigh or elastic scattering.Lattice relaxation is only significant for highly localized defect or impurity states,and should be practically zero for either single particle states or free exciton states in a bulk semiconductor or for confined states in a semiconductor nanostructure that is not extremely small.

基于改进Hilbert-Huang变换的管路环向裂纹故障诊断研究

在制造、加工、装配以及服役过程中,航空液压管路可能存在平面型缺陷。在适航载荷作用下,这些缺陷会萌生裂纹并发生扩展,最终导致管路破裂和油液泄漏。为了在管路产生微裂纹时对其进行故障诊断,采用了自行搭建的航空液压管路模态试验平台和测控系统,对存在环向裂纹航空液压管路的振动信号进行了采集和预处理。而在对管路振动信号进行分解时,由于经验模态分解(Empirical Mode Decomposition,EMD)算法存在模态混叠问题难以获得准确的本征模态函数(Intrinsic Mode Functions,IMF)。为提高信号处理精度,提出一种基于自适应噪声完备经验模态分解(Complete Ensemble Empirical Mode Decomposition with Adaptive Noise,CEEMDAN)和Hilbert变换理论相结合的改进Hilbert-Huang变换方法对航空液压管路环向裂纹进行故障诊断。研究结果表明,该方法能够更准确地诊断航空液压管路的环向裂纹故障。

Traditional Chinese medicine Pien-Tze-Huang ameliorates LPS-induced sepsis through bile acid-mediated activation of TGR5-STAT3-A20 signalling

Pien Tze Huang(PZH),a class-1 nationally protected traditional Chinese medicine(TCM),has been used to treat liver diseases such as hepatitis;however,the effect of PZH on the progression of sepsis is unknown.Here,we reported that PZH attenuated lipopolysaccharide(LPS)-induced sepsis in mice and reduced LPS-induced production of proinflammatory cytokines in macrophages by inhibiting the activation of mitogen-activated protein kinase(MAPK)and nuclear factor-kappa B(NF-κB)signalling.Mechanistically,PZH stimulated signal transducer and activator of transcription 3(STAT3)phosphorylation to induce the expression of A20,which could inhibit the activation of NF-κB and MAPK signalling.Knockdown of the bile acid(BA)receptor G protein-coupled bile acid receptor 1(TGR5)in macrophages abolished the effects of PZH on STAT3 phosphorylation and A20 induction,as well as the LPS-induced inflammatory response,suggesting that BAs in PZH may mediate its anti-inflammatory effects by activating TGR5.Consistently,deprivation of BAs in PZH by cholestyramine resin reduced the effects of PZH on the expression of phosphorylated-STAT3 and A20,the activation of NF-κB and MAPK signalling,and the production of proinflammatory cytokines,whereas the addition of BAs to cholestyramine resin-treated PZH partially restored the inhibitory effects on the production of proinflammatory cytokines.Overall,our study identifies BAs as the effective components in PZH that activate TGR5-STAT3-A20 signalling to ameliorate LPS-induced sepsis.

Reflections on Studying Huang Di Nei Jing in the West

Huang Di Nei Jing(《黄帝内经》The Yellow Emperor’s Inner Classic) has been the source text of Chinese medicine knowledge and innovation for over two thousand years. Despite this key relevance, many of its ideas and practices have proven difficult to understand and implement fully into clinical practice. Cultural and language differences can be compounded with these challenges but may also present new opportunities for advancement and insight when studied by researchers outside of the originating culture. This article introduces the method of Classical-Text Archaeology and delves into the author’s two-decade journey of researching this text, with a discussion on cultural differences and issues of medical scholarship.

Identity Crisis in Jean Rhys’ Wide Sargasso Sea Revisited

This paper examines the identity crisis experienced by Antoinette in Jean Rhys’ Wide Sargasso Sea (1966) from a predominantly soci-psychological perspective. Since most of the critical attention regarding Wide Sargasso Sea has been devoted to external problems, such as race, gender and colonial politics, this article will concentrate on the psychological relevance of those issues, examining the reasons for the internal conflict and sharp divisions that torment the heroine. It investigates identity crisis faced by the novel’s heroine and her struggle to overcome this crisis in a society where woman is triply marginalized by race, class, gender and colonialism. It also traces Antoinette’s search and struggle for an independent life and examines the extent to which she succeeds or fails in articulating her identity. Special emphasis will be laid on Erik Erikson’s psychological theories of identity crisis and human development. The paper depicts the protagonist’s endeavour to overcome the external forces that impact the construction or destruction of her identity. Ultimately, Antoinette reaches a resolution on her own terms,depending on her own personal decision and the surrounding societal and cultural circumstances.

Pien Tze Huang alleviates Concanavalin A-induced autoimmune hepatitis by regulating intestinal microbiota and memory regulatory T cells

BACKGROUND Traditional Chinese medicine has used the drug Pien Tze Huang(PTH),a classic prescription,to treat autoimmune hepatitis(AIH).However,the precise mode of action is still unknown.AIM To investigate the mechanism of PTH in an AIH mouse model by determining the changes in gut microbiota structure and memory regulatory T(mTreg)cells functional levels.METHODS Following induction of the AIH mouse model induced by Concanavalin A(Con A),prophylactic administration of PTH was given for 10 d.The levels of mTreg cells were measured by flow cytometry,and intestinal microbiota was analyzed by 16S rRNA analysis,while western blotting was used to identify activation of the toll-like receptor(TLR)2,TLR4/nuclear factor-κB(NF-κB),and CXCL16/CXCR6 signaling pathways.RESULTS In the liver of mice with AIH,PTH relieved the pathological damage and reduced the numbers of T helper type 17 cells and interferon-γ,tumor necrosis factor-alpha,interleukin(IL)-1β,IL-2,IL-6,and IL-21 expression.Simultaneously,PTH stimulated the abundance of helpful bacteria,promoted activation of the TLR2 signal,which may enhance Treg/mTreg cells quantity to produce IL-10,and suppressed activation of the TLR4/NF-κB and CXCL16/CXCR6 signaling pathways.CONCLUSION PTH regulates intestinal microbiota balance and restores mTreg cells to alleviate experimental AIH,which is closely related to the TLR/CXCL16/CXCR6/NF-κB signaling pathway.

Building Consensus on Development and Creatinga Better Future Together The 6th Silk Road(Dunhuang)International Cultural Expo

From September 6 to 7,the 6th Silk Road(Dunhuang)International Cultural Expo was successful held in Dunhuang.The theme of this year's Dunhuang Expo was"Connecting with the World:Cultural Exchanges and Mutual Learning".It focused on facilitating cooperation under the Belt and Road Initiative(BRI),carrying forward Dunhuang culture.

2016-2021年黄淮南部区试大豆品系(种)产量性状的比较分析

为在黄淮南部合理布局大豆高产品种,对2016-2021年黄淮南部177份参试大豆品系(种)的产量及主要农艺性状在不同年份、不同省份试点、不同来源及主要不同育种单位间的差异进行研究和相关性分析。结果显示,大豆产量相关农艺性状中变异幅度最大的是有效分枝,其次是株高和底荚高度,全生育期变异幅度最小。2016-2021年参试大豆品系(种)不同年份平均产量变化范围为2735.00~2918.00 kg·hm^(-2),平均产量最高的年份为2020年;参试大豆品系(种)在四个不同省份试点中,大豆品系(种)产量与单株粒重均呈极显著正相关,山东试点品系(种)株高、主茎节数、有效荚数、单株粒数、单株粒重和百粒重均高于其它试点,平均产量最高,达3156.32 kg·hm^(-2);安徽试点的平均产量最低,仅为2471.15 kg·hm^(-2);主要不同来源参试大豆品系(种)平均产量与单株粒重均呈极显著正相关,平均产量最高的是河南,平均产量为2927.41 kg·hm^(-2),其次是来源于江苏的品系(种);主要不同育种单位中,平均产量最高的选育单位是河南省农业科学院经济作物研究所,所选育的大豆品系(种)平均产量为3063.87 kg·hm^(-2),其在河南和山东试点的平均产量高达3100.42和3491.20 kg·hm^(-2)。研究结果表明黄淮南部不同省份之间大豆产量差异主要与区域有关,不同年份、不同来源及主要不同育种单位间的大豆品系(种)产量也有一定的差异。

Activities on the Dunhuang Culture Promoting Cultural Exchange Between China and New Zealand

On October 27,Organized by the Dunhuang Academy and China Cultural Center in Auckland,the"The Story of China-Dunhuang in the World"salon and"Art of Dunhuang Grottoes"lecture was successfully held at the Auckland Art Gallery.Zhao Shengliang,Chairman of the Academic Committee of the Dunhuang Academy,was the key speaker.

基于CAMM和CLDAS的黄淮海冬小麦成熟期连阴雨时空特征

利用黄淮海地区2008—2023年的CLDAS数据和同期65个农业气象观测站的冬小麦花期、成熟期观测数据,订正机理性中国农业气象模式(CAMM)中发育模块(RAM)的参数,评估模式对冬小麦成熟期的模拟精度,而后重构格点化的历年成熟期日期,统计成熟期前6天后9天共16天的降水量和雨日数,随后基于连阴雨指标,研究连阴雨的时空分布特征。结果表明:(1)RAM模式对冬小麦成熟期具有较好的模拟能力,各站RMSE平均值为2.28±0.46 d,模拟值与实测值的R2为0.915。(2)黄淮海地区冬小麦成熟期降水量和雨日数均呈南北两端高中间低的空间分布格局,区域平均降水量为8.8~84.6 mm,平均值为31.9 mm,雨日数为1.0~9.1天,平均值为5.4天。(3)2008—2023年连阴雨灾害波动较大,其中2009、2013、2018和2023年较为严重,大致呈4~5年发生一次的周期性规律,且灾情呈加重的趋势。(4)连阴雨灾害在黄淮海地区北部很少发生,河北和山东交界处偶发,灾害高发重发区主要集中在河南省,尤其是郑州以南的驻马店和信阳一带最为严重,发生频率约为5年一遇,持续天数多在9天以上。

Research on the Cultivation of Craftsmanship in Huang Yanpei’s Education Thought

Skilled talents are the main support for the strategic development of science and technology in China.The quality of talents is an important guarantee for the transformation and upgrading of national industries.By analyzing and studying Huang Yanpei’s thought on vocational education,this paper focuses on the cultivation of students’craftsmanship in vocational schools.First,we analyze the results of previous research and then elaborate on the connotations of Huang Yanpei’s education thought and craftsmanship spirit.Lastly,we propose five suggestions for the cultivation of craftsmanship.Our research work carries certain reference value to the study of craftsmanship cultivation in Huang Yanpei’s education thought.

Research on the origin of the theory of“heart as monarch”in Huang Di Nei Jing(Yellow Emperor’s Internal Classic)

Scholars have previously attributed the theoretical origin of“the heart is the monarch/ruler”to the monarchical view of politics.However,according to the latest unearthed documents and relevant documents handed down from ancient times,it can be found that the theory of“the heart is the monarch”might derive from the importance of attachment to the“Zhong”ideology in traditional culture,which promoted the concept that the heart as the center of body,should be the ruler and was later evolved as the“monarch”.Similar cognitive views were all mentioned in Confucianism,Taoism,eclectics scholars and other pre-Qin literature,but only in the system of traditional Chinese medicine,they played a significant role in building the heart-centered theory of Zang-Fu.Traditional Chinese medicine is a discipline developed mainly by clinical practice with the fundamental purpose of curing diseases and saving people.Although the philosophy of traditional Chinese medicine(TCM)roots in the pre-Qin Dynasty,the development is unique to the other philosophies.With rich cultural connotations and philosophical thoughts,TCM is certainly the key to the treasures of Chinese civilization and deserves more attention and exploration.

基于HHT的绝缘子泄漏电流分析及放电状态分类识别

泄漏电流是污秽绝缘子在线监测参数,能动态地反映绝缘子表面的放电状态。文中开展了瓷绝缘子人工污秽放电试验,利用Hilbert-Huang变换分析了不同污闪阶段的泄漏电流固有模态函数分量、Hilbert边际谱与时频熵,从时频域及波形细节提取了15个特征量,使用主成分分析法与最小二乘支持向量机分类器对污秽放电状态进行识别。结果表明:起始放电阶段与闪络阶段的泄漏电流固有模态函数分量较多;泄漏电流的Hilbert边际谱上频率主要分布在0~150 Hz、200~250 Hz范围内;闪络前泄漏电流的时频熵值总是大于闪络后的;当训练样本数为测试样本数5倍及以上时,分类器的综合评判准确率可达99%,准确实现了污秽放电状态的分类识别。文中研究结果可为建立绝缘子污闪预警系统提供依据。

基于IHHT‑RF的配电网单相接地故障选线方法

小电流系统发生单相接地故障时故障特征易受高接地过渡电阻、小初相角等弱故障条件影响而导致选线准确率低。为此,提出一种基于改进希尔伯特黄变换—随机森林(improved Hilbert⁃Huang transform⁃random forest,IHHT⁃RF)的配电网单相接地故障选线方法。首先,提取每条线路在故障发生时的电流暂态信号,通过IHHT提取纯净的暂态电气量,构造标准差、能量熵和幅值畸变度3类特征向量;然后,将特征向量输入RF分类器建立故障选线模型,把故障选线问题转化为二分类问题;最后,将测量数据输入RF分类器中得出分类结果,实现故障线路的自动识别。仿真结果表明,该选线方法综合利用暂态信号的幅值、频率和能量等特征信息,不受弱故障条件、馈线结构等因素的影响,能有效提高故障选线的准确率,具有较强的适应性和可靠性。

黄汲清与中国大地构造研究

本文概述了黄汲清的中国大地构造经典著作——《中国主要地质构造单位》的基本内容和写作基础;阐述了黄汲清及其科学集体的治学风格和工作方法,强调野外地质调查的重要性,突出用新的科学理念和事实,与时俱进不断发展大地构造学。指出大地构造学已从研究地球表层地壳构造、岩石圈构造,进入用地球系统观研究地球整体多圈层构造的新阶段。

基于黄元御“水寒土湿木郁”理论探讨功能性便秘的诊治及其肠道微生态的改变

目的基于黄元御“水寒土湿木郁”理论探讨功能性便秘(Functional constipation,FC)的诊治,采用高通量测序技术探讨肉苁蓉汤对“水寒土湿木郁”型FC患者肠道微生态的影响。方法选取2020年9月—2022年1月期间厦门市中医院肛肠科便秘门诊收治的“水寒土湿木郁”型慢性FC患者60例,采用随机数字表法分为对照组和治疗组,每组各30例。治疗组采用肉苁蓉汤,对照组口服聚乙二醇4000,疗程均为5周。其中肉苁蓉汤组20例,聚乙二醇组18例,分别采集两组患者治疗前后的自然排出的粪便(10.00±5.00)g,立即置于液氮中冷冻,再放入-80℃冰箱中保存,采用MagPure Soil DNA LQ Ki试剂,采用高通量测序技术分析菌群的变化,进行Alpha多样性指数分析,并分别使用Chao、Shannon及Simpson指数计算肠道菌群丰度和菌群多样性;采用LefSe技术分析治疗前后粪便样本中菌群组成中的差异性菌属。结果两组患者疗程结束后水寒土湿木郁证候量化积分,差异有统计学意义(P<0.05);两组患者疗程结束3个月后水寒土湿木郁证候量化积分,差异有统计学意义(P<0.05)。表明肉苁蓉汤组的疗效优于聚乙二醇组。稀释曲线表明测序数据量合理,基本能覆盖样本中所有的细菌种类;治疗后FC患者肠道菌群的Chno1指数高于治疗前,Shannon指数和Simpson指数均低于治疗前,但三者治疗前后的差异无统计学意义(P>0.05);门水平上各组肠道菌群中相对分布较高的菌属有Bacteroidota、Cyanobacteria、Campilobacterota、Deferribacterota;属水平上,各组肠道菌群中相对分布较高的菌属有Bacteroidota、Parabacteroides、Eubacterium_eligens_group、Alistipes、Lachnoclostridium。结论肉苁蓉汤治疗“水寒土湿木郁”型便秘可以取得中远期的疗效,可以增加肠道有益菌,改善肠道微生态。

黄元御运用浮萍治疗疫病理论及应用探微

清代医家黄元御,学识渊博,医术精湛,尤其擅长运用六经辨证诊治疫病。他在《玉楸药解》和《四圣悬枢》中详细阐述了浮萍的性味、功效及其在六经疫病中的应用,强调其在治疗疫病中的重要作用。在治疗疫病时,根据六经证候特点,黄元御以浮萍为君药,常与芍药、葛根、石膏、地黄等药物配伍。同时,根据病情轻重和个体差异,对药物剂量进行精细调整,以达到最佳治疗效果。黄元御运用浮萍治疗疫病的经验在当时医界具有较大影响,对后世的疫病防治产生了积极影响。在当今疫情频发的背景下,深入研究黄元御的疫病防治思想和方法,对于提高中医药防治疫病的疗效具有重要意义。

新癀片治疗甲状腺结节微波消融术后颈部肿胀疼痛的效果

目的探讨新癀片治疗甲状腺结节微波消融术(microwave ablation,MWA)后颈部肿胀疼痛的疗效。方法将150例甲状腺结节行MWA后颈部肿胀疼痛患者随机分为治疗组、安慰剂组和对照组,每组50例。治疗组于术后立即口服新癀片,3片,tid,口服3 d;安慰剂组于术后立即口服安慰剂(淀粉药丸),3片,tid,口服3 d;对照组术后未口服药物。比较3组患者术后颈部肿胀、颈部疼痛情况。结果治疗组术后12、24、48、72 h颈部疼痛评分较对照组及安慰剂组显著减少,差异均有统计学意义(P<0.01);治疗组术后48、72 h颈部肿胀发生率较对照组及安慰剂组显著减少,差异均有统计学意义(P<0.01);治疗组术后72 h颈部疼痛、肿胀持续时间较对照组及安慰剂组显著缩短,差异均有统计学意义(P<0.01)。结论新癀片能够明显改善甲状腺结节MWA术后颈部肿胀程度,缓解颈部疼痛,从而改善患者术后不适感,是治疗甲状腺结节MWA术后颈部肿胀疼痛的理想药物。

三黄柴术方调控Nrf2抗氧化应激防治急性肝内胆汁淤积性肝损伤

目的探讨三黄柴术方对异硫氰萘酯(ANIT)诱导的急性肝内胆汁淤积大鼠肝脏Nrf2表达及氧化应激水平的影响。方法SD雄性大鼠48只,随机分为正常组、模型组、复方高、中、低剂量组及熊去氧胆酸(UDCA)组,每组8只。实验第3天使用一次性灌服4%ANIT 100 mg/kg造模,各药物干预组于第1~5天进行不同药物灌胃。造模后48 h取材。空腹麻醉后腹腔静脉抽血检测血清肝功能;分离肝脏,存入-80℃冰箱中待用,测定SOD活力、MDA含量、GSH-PX和CAT活力,fluorescent quantitative PCR测定肝组织Nrf2、SOD1、SOD2、SOD3、CAT的mRNA表达,WB检测肝组织Nrf2的蛋白表达。结果与正常组比,模型组大鼠造模后48 h肝脏MDA含量较正常组明显升高,SOD、GSH-Px、CAT活性明显降低,肝组织Nrf2mRNA及蛋白、SOD、CATmRNA的表达明显降低(P<0.05);与模型组比,三黄柴术方各剂量组及UDCA组肝脏MDA含量明显下降,SOD、GSH-Px及CAT的活性全部或部分升高,Nrf2mRNA及蛋白、SOD、CATmRNA的表达明显升高(P<0.05)。结论三黄柴术方对急性肝内胆汁淤积淤积性肝损伤的疗效机制可能是通过增加Nrf2蛋白及mRNA的表达,加强肝脏抗氧化应激能力,减轻肝组织炎症损伤。

黄炎培职业教育思想在护理专业产教融合中的应用现状及对策

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