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Solar trough receiver with V-grooved light traps for efficiency improvement

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Science China Technological Sciences 2025年第1期 146-156页

作者： Bin liU qing li Yu QIU School of Energy Science and Engineering Central South University

Parabolic trough collector is a promising technology for both domestic and industrial heat supplies. To enhance the collector efficiency, a modified trough receiver with dozens of V-grooved light traps incorporated into its lower-half absorber was introduced. For assessing the performance of this receiver, a solar-thermal-stress coupled model was established. Using this model, firstly, the effects of the V-grooved light traps were investigated. The results reveal that, compared to the conventional trough receiver, the modified trough receivers equipped with different traps can reduce their optical losses by 81.9–138.0 Wm-1（i.e., 15.0%–25.2%）, improving their optical efficiencies by 1.60%–2.69%. However, these traps also result in increased thermal loss from the receiver. Therefore, there is no single optimal modified trough receiver that consistently outperforms all other receivers across all possible conditions. Nonetheless, the MTR30-3 and MTR60-3 receivers emerge as the optimized choices due to their better solar-thermal performance. Subsequently, performance evaluation reveals that the two optimized receivers can enhance the receiver efficiencies within the typical solar irradiance range by 0.02%–2.65% and 0.05%–1.70% when the inlet fluid temperatures are below 488 and 523 K, respectively. Consequently, the collector efficiencies can be improved by 0.02%–2.49% and 0.05%–1.60%, respectively. Additionally, thermal stress analysis verifies that the two optimized receivers remain within safe limits under all typical conditions. Given that the heating temperature of a typical solar collector for domestic or industrial heat supply is typically below 523 K, the integration of the two optimized receivers has the capability to effectively enhance the overall collector efficiency.

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Integrating lipidomics and gut microbiota to study the anti-hyperlipidemia effect of Sargentodoxae Caulis extract

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Traditional Medicine Research 2025年第1期10卷 1-11页

作者： Xiao-Xiao Zhang li Jia Xiu-Jun Zhan Charity Ngina qing-Rui Zhang Xiao-Ge li Qi-Bao Jiang Shi Bai Miao-Miao Jiang National Key Laboratory of Chinese Medicine Modernization Tianjin University of Traditional Chinese MedicineTianjin 301617China Haihe Laboratory of Modern Chinese Medicine Tianjin 301617China School of Medicine Taizhou UniversityTaizhou 318000China.

Background:Sargentodoxae Caulis(SC)is the vine stem of Sargentodoxa Cuneata(Oliv.)Rehd.&*** in ***,and it in traditional Chinese medicine has been known for promoting blood circulation and removing blood stasis as recorded in the ancient book“Illustrated Classics of Materia Medica”.It has been used effectively to treat blood stasis too in modern clinical ***,the anti-hyperlipidemia effect of SC is not fully *** paper aims at exploring the use of SC stems to improve the balance of blood lipids in the body,and its new role in treating ***:The effects of SC extract on hyperlipidemia were explored by combining lipidomics and gut ***,we explored the potential mechanism of SC in treating hyperlipidemia by pathway ***:The results showed that the stem extract of SC could restore the physiological and biochemical indices of hyperlipidemia in mice,as well as repair the morphological and structural damage to *** to the Model group,the SC extract significantly reduced the liver index,epididymal fat index,and Lee’s *** also significantly decreased serum levels of total cholesterol,triglycerides,low-density lipoprotein cholesterol,peroxisome proliferator-activated receptor gamma(PPAR-γ),D-lactate,and free fatty acids,while significantly increasing the relative content of peroxisome proliferator-activated receptor alpha(PPAR-α).These changes were statistically ***-targeted lipidomics,based on LC-MS,were utilized to investigate the lipid metabolism characteristics in serum,liver,and epididymal fat of the *** was observed that,compared to the blank group,the Model group exhibited significant changes primarily in glycerol lipids and *** treatment group also displayed alterations in these lipids.A total of 38,81,and 27 differential lipids were identified in serum,liver,and epididymal fat samples,*** these,14 common differenti

关键词： hyperlipidemia Sargentodoxae Caulis lipidomics intestinal flora

超重孕妇肥胖抑制素、炎症因子水平及相关性研究

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现代检验医学杂志 2018年第6期33卷 65-68页

作者：马清光李慧敏程晓周薇上海市宝山区大场医院检验科上海200844 上海市宝山区大场医院妇产科上海200844

目的探讨妊娠超重孕妇肥胖抑制素(obestatin)水平及其与胰岛素抵抗(insulin resistance,IR)、炎症因子的关系。方法收集2016年12月～2018年3月上海市宝山区大场医院产科行常规产前检查的孕妇超重组69例、肥胖组36例,及同期健康孕妇66例... 详细信息

目的探讨妊娠超重孕妇肥胖抑制素(obestatin)水平及其与胰岛素抵抗(insulin resistance,IR)、炎症因子的关系。方法收集2016年12月～2018年3月上海市宝山区大场医院产科行常规产前检查的孕妇超重组69例、肥胖组36例,及同期健康孕妇66例,诊断标准参照《中国成人超重和肥胖症预防控制指南》。以生化免疫分析法检测胰岛素、肥胖抑制素、肿瘤坏死因子-α(TNF-α)、白介素6(IL-6)、C-反应蛋白(CRP)等相关实验指标。结果超重组及肥胖组与对照组肥胖抑制素水平为304±58,275±57vs 317±80ng/L,差异具有统计学意义(F=4.235,P<0.05);肥胖组与对照组CPR,TNF-α和IL-6水平为29.4±10.3mg/L,56.8±9.0pg/ml,36±8.1pg/ml vs 10.5±5.2mg/L,40.3±10pg/ml,28±8.4pg/ml,差异有统计学意义(F=3.10,3.24,3.31,均P<0.05);超重孕妇肥胖抑制素水平与BMI,空腹血糖、胰岛素和HOMA-IR呈明显负相关(r=-0.41,-0.38,-0.35,-0.40,均P<0.01)。血清肥胖抑制素水平与CPR,TNF-α,IL-6水平呈负相关(r=-0.34,-0.36,-0.33,均P<0.05)。多元逐步回归分析,BMI和HOMA-IR是妊娠肥胖血清Obestatin水平的独立危险因素,差异有统计学意义(F=2.273,P=0.035)。结论妊娠超重孕妇肥胖抑制素水平减低,炎症因子水平升高,其改变与胰岛素抵抗相关联。

关键词：妊娠超重肥胖抑制素胰岛素抵抗炎症因子

Electrochemical properties of Ca-Pb electrode for calcium-based liquid metal batteries

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International Journal of Minerals,Metallurgy and Materials 2020年第12期27卷 1723-1729页

作者： Xiao-hui Ning Chen-zheng liao Guo-qing li Center for Advancing Materials Performance from the Nanoscale(CAMP-Nano) State Key Laboratory for Mechanical Behavior of MaterialsXi'an Jiaotong UniversityXi'an 710049China

The Ca-Pb electrode couple is considered to be one of the least expensive(~36$/(k W·h))among various optional materials for liquid-metal batteries(LMBs).The electrochemical properties of Ca-Pb alloy in a Ca|li Cl-Na Cl-Ca Cl_(2)|Pb cell were investigated in this *** electrode potential maintained a linear relationship in the current density range of 50-200 m A·cm^-2,which indicates that the alloying and dealloying processes of Ca with Pb attained rapid charge transfer and mass transport in the interface between the liquid electrode and *** Ca-Pb electrode exhibited remarkable properties with a high discharge voltage of 0.6 V,a small self-discharge current density(98.84%).The postmortem analysis showed that intermetallics Ca Pb3 and Ca Pb were uniformly distributed in the electrode with different molar fractions of Ca,which indicates that the nucleation of solid intermetallics did not hinder the diffusion of Ca in the *** investigation on Ca-Pb electrode sheds light on the further research and the design of electrodes for Ca-based LMBs.

关键词： liquid-metal battery molten salt electrolyte Ca-Pb alloys electrochemical properties

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红茶菌发酵咖啡液制备低咖啡因饮料

食品科技 2016年第11期41卷 57-62,67页

作者：谢惠青赵力超杨翠琪陈金欧阳广宇陈思锴谭绮雯王丽华南农业大学食品学院广州510642

为研制出一种具有保健功能的咖啡饮品,采用红茶菌为菌种发酵咖啡液,研制低咖啡因发酵饮料。以发酵液的pH、还原糖含量和感官评定作为指标,通过对咖啡液浓度、糖浓度和发酵时间的单因素试验、正交试验和极差分析,探究发酵最佳工艺条件及... 详细信息

为研制出一种具有保健功能的咖啡饮品,采用红茶菌为菌种发酵咖啡液,研制低咖啡因发酵饮料。以发酵液的pH、还原糖含量和感官评定作为指标,通过对咖啡液浓度、糖浓度和发酵时间的单因素试验、正交试验和极差分析,探究发酵最佳工艺条件及发酵过程中咖啡因含量的变化。结果表明,36℃恒温静置培养条件下最优配比组合为咖啡浓度2 g/100 mL,糖浓度4 g/100 mL,发酵时间8 d。经检测,最优组合发酵液中主要含乳酸菌5.0×10^6 cfu/mL、醋酸菌4.8×10^6 cfu/mL和酵母菌5.3×10^6 cfu/mL,咖啡液经发酵后咖啡因含量降低了13.04%。这不仅丰富了红茶菌饮料的口味,也为降低咖啡中的咖啡因含量提供了新方法。

关键词：红茶菌咖啡发酵正交试验咖啡因

Coexistence of tuberculosis and squamous cell carcinoma in the right main bronchus:A case report

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World Journal of Clinical Cases 2021年第25期9卷 7520-7526页

作者： hui Jiang Ya-qing li Department of Internal Medicine Zhejiang Provincial People’s HospitalPeople’s Hospital of Hangzhou Medical CollegeHangzhou 310014Zhejiang ProvinceChina Department of Internal Medicine Cancer Hospital of the University of Chinese Academy of Sciences(Zhejiang Cancer Hospital)Hangzhou 310014Zhejiang ProvinceChina

BACKGROUND Lung cancer with pulmonary tuberculosis(TB)refers to the occurrence of lesions simultaneously or sequentially in the lung(s)of the same patient,and the pathological examination and sputum TB examination diagnose them as lung cancer and TB,*** occurrence of endobronchial TB(EBTB)with endobronchial tumor sequentially in the same bronchus lesion of the same patient is relatively *** SUMMARY A 62-year-old female patient was admitted to a local hospital on June 18,2019 after a 3-mo history of *** was a farmer and had no history of smoking and alcohol *** patient had neither family nor work contact indicating exposure to *** chest computed tomography(CT)examination showed that the right main bronchus was occupied and malignant tumor was *** examination of a bronchial biopsy showed granulomatous inflammation with caseification and the presence of acid fast bacilli(AFB).However,after 6 mo of antitubercular treatment,repeat bronchoscopy and biopsy histological examination showed squamous cell *** patient has started on systemic chemotherapy with *** another two cycles of therapy,chest CT showed complete resolution of the *** lavage and bronchial aspirate were negative for AFB and cancer *** It is not only more likely that a patient presenting with what appears to be TB will concurrently have a pulmonary malignancy than someone who does not have a TB infection,but also that it is of greater urgency to make an expedited diagnosis of the malignancy.

关键词： Tumorous endobronchial tuberculosis Bronchial squamous cell cancer Diagnosis Treatment Case report

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河北省4个黑猪群体的遗传多样性分析

河北农业大学学报 2017年第2期40卷 79-83页

作者：赵思思贾青胡慧艳李赛张秋良姚恒江河北农业大学动物科技学院河北保定071000 国家北方山区农业工程技术研究中心河北保定071000 河北省山区农业工程技术研究中心河北保定071000 河北省辛集市正农牧业有限公司河北辛集052371 河北省畜牧兽医研究所河北保定071000 易县畜牧站河北易县074200

为合理利用地方猪遗传资源,随机选取河北省4个市的4个黑猪群体,采用FAO-ISAG联合推荐的8个微卫星标记对各样本群体的等位基因数、有效等位基因数、杂合度、多态信息含量及F-统计量进行检测。结果显示,8个微卫星座位共检测到66个等位基... 详细信息

为合理利用地方猪遗传资源,随机选取河北省4个市的4个黑猪群体,采用FAO-ISAG联合推荐的8个微卫星标记对各样本群体的等位基因数、有效等位基因数、杂合度、多态信息含量及F-统计量进行检测。结果显示,8个微卫星座位共检测到66个等位基因。有效等位基因数(3.103~5.349),观察杂合度(0.346~0.437),期望杂合度(0.638~0.790)和多态信息含量(0.578~0.762)4个指标,表明4个猪群体具有丰富的多样性。所检测的微卫星位点均偏离平衡状态,主要是由于起始群体规模小或公猪家系少所致。F统计量结果表明,4个猪群体都存在一定程度的近交。依据对4个猪群的分析结果,群体1、2可通过扩大血统数,以减缓近交程度;群体3、4应开展选育,以提高群体一致性。

关键词：地方猪遗传多样性微卫星

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小分子热休克蛋白的结构与功能

生命科学 2017年第1期29卷 55-61页

作者：李艳张国强邵东燕师俊玲黄庆生杨慧李琦靳明亮西北工业大学生命学院空间生物实验模拟技术重点实验室西安710072 西藏大学农牧学院食品科学学院林芝860000

小分子热休克蛋白(small heat shock protein,sHsp)是相对分子质量介于12~43 kDa的热休克蛋白家族成员,广泛存在于生物体内。根据相关报道,该类蛋白在组成上都含有α-晶状体蛋白结构域(α-crystalline domain,ACD)、N端臂和C端延伸结构... 详细信息

小分子热休克蛋白(small heat shock protein,sHsp)是相对分子质量介于12~43 kDa的热休克蛋白家族成员,广泛存在于生物体内。根据相关报道,该类蛋白在组成上都含有α-晶状体蛋白结构域(α-crystalline domain,ACD)、N端臂和C端延伸结构。sHsp是生命体中一种重要的分子伴侣,对蛋白质的变性过程有很强的保护作用。生物体中sHsp的生物状态发生改变会引起机体发生病变,而sHsp的正常存在则可以延缓细胞衰老,并降低细胞凋亡率。现综述有关sHsp在细胞凋亡中的控制作用,以及与其相关的神经退行性疾病、癌症、白内障等多种病变的发病机制,以期为相关研究提供参考。

关键词：小分子热休克蛋白 ACD结构域分子伴侣疾病

一种新型大纯滞后过程控制方案的鲁棒稳定性分析

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江南大学学报（自然科学版） 2003年第3期2卷 245-249页

作者：仝庆贻李辉颜钢锋浙江大学电气工程学院浙江杭州310027

提出了一种新型的大纯滞后系统的控制方案,该方案无需根据被控对象做出精确的预估模型,仅用常规的PI调节器即可实现系统的控制,仿真试验结果表明:在随动和可测干扰情况下,大纯滞后不影响系统的控制效果和稳定性,系统对于被控对象参数的... 详细信息

提出了一种新型的大纯滞后系统的控制方案,该方案无需根据被控对象做出精确的预估模型,仅用常规的PI调节器即可实现系统的控制,仿真试验结果表明:在随动和可测干扰情况下,大纯滞后不影响系统的控制效果和稳定性,系统对于被控对象参数的变化不敏感;系统的抗干扰能力比传统大纯滞后控制方案有了较大提高,干扰可被迅速消除。

关键词：大纯滞后 Smith预估器鲁棒稳定性