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高致密高强橡胶混凝土的力学性能

南昌大学学报（工科版） 2024年第1期46卷 76-82页

作者：薛守宁董江峰朱忠平刘钊李昂徐一刘元聪国能大渡河流域水电开发有限公司四川成都610016 四川大学深地科学与工程教育部重点实验室四川成都610065 国能大渡河流域水电开发有限公司枕沙水电建设管理分公司四川乐山614799

考虑深部煤炭开采等深部地下工程的高渗透压以及剧烈扰动的工况需求,对地下混凝土材料韧性和致密性等性能提出更高要求。因此基于最紧密堆积模型,完成了高致密橡胶混凝土配合比设计,并在此基础上控制橡胶颗粒掺量和粒径,研究了橡胶掺量... 详细信息

考虑深部煤炭开采等深部地下工程的高渗透压以及剧烈扰动的工况需求,对地下混凝土材料韧性和致密性等性能提出更高要求。因此基于最紧密堆积模型,完成了高致密橡胶混凝土配合比设计,并在此基础上控制橡胶颗粒掺量和粒径,研究了橡胶掺量和橡胶粒径对其养护7、14、28 d后力学性能的影响。研究结果表明:高致密橡胶混凝土各项基础力学性能皆优于普通橡胶混凝土,橡胶掺量的增加会导致高致密橡胶混凝土抗压强度和弹性模量下降,抗折强度为先增后减,劈裂抗拉强度呈现波动下降趋势,且高致密的混凝土结构能够有效改善橡胶掺入带来的抗压强度和弹性模量下降。综合试验结果,20%橡胶粉掺量下的高致密橡胶混凝土表现出最佳的力学性能。

关键词：最紧密堆积模型高致密橡胶混凝土配合比设计力学特性

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Intense single-band red upconversion emission in BiOCl:Er3+ layered semiconductor via co-doping ho3+

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Journal of Rare Earths 2020年第6期38卷 577-583页

作者： yuehong Peng Jincai Peng Jiajun han Tianhui Wang Zhaoyi yin Jianbei Qiu Qi W ang Zhengwen yang Zhiguo Song School of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China School of Physics and Electronical Science Chuxiong Normal UniversityChuxiong 675000China Dean's Office Sichuan University of Arts and ScienceDazhou 635000China

Exploring a new tuning way to facilely realize single-band red emission in trivalent rare-earth ions(RE3+) doped upconversion(UC) materials is still *** this work,the intense single-band red emission is achieved by co-doping only ho3+in the BiOCl:Er3+ under 1550 nm *** the BiOCl layered host,co-doping ho3+can further enhance the red emission and simultaneously suppress the green emission of Er3+,and thus obviously improve the red-to-green(R/G) *** is found that ho3+does not se rve as ene rgy trapping through the 5 I6 state as in traditional UC materials but acts as ET bridge(4 S3/2,2 h11/2(Er3+)→5 F4,5 S2(ho3+)→4 F9/2(Er3+)).The tuning mechanism of ho3+is discussed in detail and further confirms through a comparative *** research gives an unusual perspective to tune the UC behavior of Er3+through co-doping ho3+,which might be inspiring for achievement of single-band red UC emission.

关键词： Single-band red emission BiOCl Er3+ ho3+ Rare Earths

high-resolution ARPES endstation for in situ electronic structure investigations at SSRF

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Nuclear Science and Techniques 2021年第3期32卷 94-106页

作者： yi-Chen yang Zheng-Tai Liu Ji-Shan Liu Zhong-hao Liu Wan-Ling Liu xiang-Le Lu hong-Ping Mei ang Li Mao ye Shan Qiao Da-Wei Shen State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China University of Chinese Academy of Sciences Beijing 100049China

angle-resolved photoemission spectroscopy(ARPES)is one of the most powerful experimental techniques in condensed matter *** ARPES,which uses photons with high flux and continuously tunable energy,has become particularly ***,an excellent synchrotron ARPES system must have features such as a small beam spot,super-high energy resolution,and a user-friendly operation interface.A synchrotron beamline and an endstation(BL03 U)were designed and constructed at the Shanghai Synchrotron Radiation *** beam spot size at the sample position is 7.5(V)μm×67(h)μm,and the fundamental photon range is 7-165 eV;the ARPES system enables photoemission with an energy resolution of 2.67 meV at21.2 *** addition,the ARPES system of this endstation is equipped with a six-axis cryogenic sample manipulator(the lowest temperature is 7 K)and is integrated with an oxide molecular beam epitaxy system and a scanning tunneling microscope,which can provide an advanced platform for in situ characterization of the fine electronic structure of condensed matter.

关键词： Synchrotron ARPES In situ VUV laser Quantum materials

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红壤对土霉素的吸附特征及影响因素研究

生态毒理学报 2024年第4期19卷 143-155页

作者：李佳乐周永康董一慧卫承芳孙占学王斌王萌敖奕博江悦玲李烨余东华理工大学水资源与环境工程学院南昌330013 地下水污染成因与修复江西省重点实验室南昌330013

为了解红壤吸附抗生素的能力以及作用机制,本文采用批量平衡法和超高效液相色谱-三重四极杆串联质谱(UPLC-MS/MS)测试技术,以典型兽用抗生素土霉素(oxytetracycline,OTC)为目标污染物,江西宜春养猪场区所采集的粉砂质红壤为试验对象,研... 详细信息

为了解红壤吸附抗生素的能力以及作用机制,本文采用批量平衡法和超高效液相色谱-三重四极杆串联质谱(UPLC-MS/MS)测试技术,以典型兽用抗生素土霉素(oxytetracycline,OTC)为目标污染物,江西宜春养猪场区所采集的粉砂质红壤为试验对象,研究OTC在红壤中的吸附-解吸特征及影响因素。结果表明,OTC在红壤中的吸附非常快,6 h即可基本达到平衡,准一级动力模型仅能较好地拟合吸附初期1 h的吸附过程,准二级动力模型能非常好地拟合整个吸附过程,解吸过程存在明显的滞后性;Freundlich模型能够更好地拟合试验土壤对OTC的等温吸附过程;OTC在试验土壤上的吸附量与ph呈负相关;共存阳离子中,随着离子强度增加,吸附量均呈逐渐减少的趋势,且阳离子价态越高,离子半径越大,吸附抑制性越强;共存阴离子中,仅hCO-3对吸附存在影响,影响程度与ph相关。该研究证明了土霉素在红壤中残留的可能性非常大,污染持久性强,对土壤环境污染程度高。

关键词：红壤土霉素吸附 ph 离子

Eugenunilones A-h:rearranged sesquiterpenoids from Eugenia uniflora

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Organic Chemistry Frontiers 2022年第3期9卷 667-675页

作者： Mu Chen Jia-Qing Cao Song ang Ting-Ni Zeng Ni-Ping Li Tang-Jia yang Jun-Shan Liu yan Wu Wen-Cai ye Lei Wang Centre for Bioactive Natural Molecules and Innovative Drugs and Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs ResearchCollege of PharmacyJinan UniversityGuangzhou 510632P.R.China Third Level Research Laboratory of State Administration of Traditional Chinese Medicine School of Traditional Chinese MedicineSouthern Medical UniversityGuangzhou 510515P.R.China

Six rearranged sesquiterpenoid dimers and monomers with four types of new skeletons,meso-eugenunilone A(meso-1),(+)-and(−)-eugenunilones B−F[(+)-and(−)-2-6],along with two new biogenetically related members(+)-and(−)-... 详细信息

关键词： nil skeleton sesquiterpenoid

Rabeprazole vs esomeprazole in non-erosive gastro-esophageal reflux disease: A randomized, double-blind study in urban Asia

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World Journal of Gastroenterology 2005年第20期11卷 3091-3098页

作者： KM Fock EK Teo TL ang TS Chua TM Ng yL Tan Division of Gastroenterology Department of Medicine Changi General Hospital Singapore

AIM：Gastro-esophageal reflux disease (GERD) is becoming increasingly common in Asia. Data on the efficacy of proton pump inhibitors in patients with non-erosive GERD (NERD)in Asia is lacking. This double-blind study compared the efficacy and safety of rabeprazole with esomeprazole in relief of symptoms in patients with ***: One hundred and thirty-four patients with reflux symptoms of NERD and normal endoscopy were randomized to receive rabeprazole 10 mg or esomeprazole 20 mg once daily for 4 wk. Symptoms were recorded in a diary and changes in severity of symptoms ***: At 4 wk of treatment, rabeprazole 10 mg and esomeprazole 20 mg were comparable with regards to the primary endpoint of time to achieve 24-h symptomfree interval for heartburn 8.5 d vs9 d and regurgitation 6 d vs 7.5 d. Rabeprazole and esomeprazole were also similarly efficacious in term of patient's global evaluation with 96% of patients on rabeprazole and 87.9% of patients on esomeprazole, reporting that symptoms improved(P=NS). Satisfactory relief of day- and night-time symptoms was achieved in 98% of patients receiving rabeprazole and 81.4% of patients receiving esomeprazole. Adverse events were comparable in both groups (P = NS).CONCLUSION: Rabeprazole 10 mg has a similar efficacy and safety profile in Asians with NERD as esomeprazole 20 mg. Further study is necessary to investigate whether the small differences between the two drugs seen in this study are related to the improved pharmacodynamicpro perties of rabeprazole. Both drugs were well tolerated.

关键词： Non-erosive esophageal reflux disease New proton pump inhibitors

Ingredients from integral valorization of Isabel grape to formulate goat yogurt with stimulatory effects on probiotics and beneficial impacts on human colonic microbiota in vitro

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Food Science and human Wellness 2023年第4期12卷 1331-1342页

作者： Francyeli Araújo Silva Rita de Cássia Ramos do Egypto Queiroga Evandro Leite de Souza Glenise Bierhalz Voss Maria Manuela Estevez Pintado Margarida angélica da Silva Vasconcelos Department of Nutrition Federal University of PernambucoRecife 50670-420Brazil Department of Nutrition Health Sciences CenterFederal University of ParaíbaJoão Pessoa 58050-585Brazil Universidade Católica Portuguesa CBQF-Centro de Biotecnologia e Química Fina-Laboratório AssociadoEscola Superior de BiotecnologiaPorto 4169-005Portugal

Isabel grape(IG)products have high contents of phenolic compounds and fiber recognized for their positive impacts on microorganisms associated with health benefits to *** study evaluated the effects of goat yogurts formulated with ingredients from IG integral valorization on the growth and metabolism of different probiotic strains,as well as on the population of selected bacterial groups and metabolic activity of human colonic microbiota in *** yogurts with IG ingredients(IGI)stimulated the growth of tested Lactobacillus and Bifidobacterium probiotic strains during a 48-h cultivation,as well as decreased the ph values and enhanced the organic acid *** yogurts with IGI increased the population of Lactobacillus *** Bifidobacterium *** a 24-h in vitro colonic fermentation.A stable Firmicutes:Bacteroidetes ratio close to 1 was found in media with goat yogurt formulations during the colonic fermentation,being similar to the effect caused by *** yogurt formulations with IGI caused increased production of short-chain fatty acids and sugar consumption during colonic *** yogurts with IGI should be a valuable strategy for development of novel added-value foods with beneficial effects on gut microbiota and human health.

关键词： Goat dairy product Grape Beneficial microorganisms Gut microbiota Modulatory effects

Tongue diagnosis based on hue-saturation value color space: controlled study of tongue appearance in patients treated with percutaneous coronary intervention for coronary heart disease

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Intelligent Medicine 2023年第4期3卷 252-257页

作者： yumo xia Qingsheng Wang xiao Feng xin’ang xiao yiqin Wang Zhaoxia xu Basic Medical College Shanghai University of Traditional Chinese MedicineShanghai 201203China

Objective To analyze the characteristics of tongue imaging color parameters in patients treated with percutaneous coronary intervention(PCI)and non-PCI for coronary atherosclerotic heart disease(ChD),and to observethe effects of PCI on the tongue images of patients as a basis for the clinical diagnosis and treatment of patientswith *** This study used a retrospective cross-sectional survey to analyze tongue photographs and medicalhistory information from 204 patients with ChD between November 2018 and July *** images ofeach subject were obtained using the Z-BOx Series traditional Chinese medicine(TCM)intelligent diagnosisinstruments,the SMx System 2.0 was used to transform the image data into parameters in the hSV color space,and finally the parameters of the tongue image between patients in the PCI-treated and non-PCI-treated groupsfor ChD were *** Among the 204 patients,112 were in the non-PCI treatment group(38 men and 74 women;average age of(68.76±9.49)years),92 were in the PCI treatment group(66 men and 26 women;average age of(66.02±10.22)years).In the PCI treatment group,the h values of the middle and tip of the tongue and the overall coating of thetongue were lower(Phile the V values of the middle,tip,both sides of the tongue,the whole tongueand the overall coating of the tongue were higher(Phe color parameters of the tongue image could reflect the physical state of patients treated withPCI,which may provide a basis for the clinical diagnosis and treatment of patients with ChD.

关键词： Objective evaluation Tongue diagnosis Coronary heart disease Percutaneous coronary intervention hue-saturation value color space Traditional Chinese medicine syndromes

高致病性h5N8亚型禽流感假病毒的制备与验证

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安徽预防医学杂志 2024年第1期30卷 1-5,27页

作者：胡敏昊罗婉蓉夏艺丹俞俊岭周雪方惟希杨思天何军安徽省疾病预防控制中心微生物检验室安徽合肥230601 安徽省公共卫生研究院病原微生物与生物安全研究室安徽合肥230601 安徽医科大学公共卫生学院卫生检验与检疫学系安徽合肥230032

目的为研究高致病性h5N8亚型(A/Astrakhan/3212/2020)禽流感病毒的结构,制备相应假病毒,并对其在细胞水平上的感染能力以及血清抗体的中和能力进行初步验证。方法通过对h5N8亚型病毒的血凝素(hA)和神经氨酸酶(NA)的氨基酸序列分析,将目... 详细信息

目的为研究高致病性h5N8亚型(A/Astrakhan/3212/2020)禽流感病毒的结构,制备相应假病毒,并对其在细胞水平上的感染能力以及血清抗体的中和能力进行初步验证。方法通过对h5N8亚型病毒的血凝素(hA)和神经氨酸酶(NA)的氨基酸序列分析,将目的hA和NA序列进行优化并提取相应质粒,采用慢病毒包装系统制备h5N8亚型假病毒;使用感染含有α-2,6唾液酸受体的293T-ST6GAL1细胞后的荧光素酶读值、血凝抑制试验、透射电镜以及血清中和试验对制备的假病毒进行验证。结果成功制备h5N8亚型假病毒,其对293T-ST6GAL1细胞的感染力为103TCID50/m L,浓缩50倍后血凝活性从16提高到128,透射电镜可观察到典型的流感病毒颗粒,中和试验显示3份h5N8阳性血清中和活性明显高于其他亚型阳性血清以及阴性血清。结论成功制备高致病性h5N8亚型禽流感假病毒,为未来的疫苗开发和中和抗体筛选提供了重要的实验平台。

关键词： h5N8亚型禽流感病毒假病毒制备血凝素神经氨酸酶中和试验