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近红外反射光谱法测定苜蓿干草主要纤维成分的研究

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光谱学与光谱分析 2008年第5期28卷 1045-1048页

作者：聂志东韩建国玉柱仲勇刘富渊中国农业大学草地研究所北京100094 成都大业国际投资股份有限公司甘肃总部甘肃酒泉735000

采集不同生育期、不同品种和不同干燥方式(烘干、阴干、晒干)的苜蓿干草样品60份,研究了利用近红外反射光谱法分析苜蓿干草中纤维素、半纤维素和木质素含量的可行性。实验结果显示,纤维素的交互验证相关系数(RCV)、外部验证决定系数(r2... 详细信息

采集不同生育期、不同品种和不同干燥方式(烘干、阴干、晒干)的苜蓿干草样品60份,研究了利用近红外反射光谱法分析苜蓿干草中纤维素、半纤维素和木质素含量的可行性。实验结果显示,纤维素的交互验证相关系数(RCV)、外部验证决定系数(r2)以及验证集样品标准差(SD)与预测残差均方根(RMSEP)的比值(RPD)分别为0.97,0.97,4.44,木质素为0.94,0.94,4.08,表明利用NIRS技术可以准确分析苜蓿干草中纤维素和木质素的含量。半纤维素的RCV,r2,RPD分别为0.29,0.12,1.09,说明该模型不能进行半纤维素的实际预测。利用近红外反射光谱法准确测定纤维素和木质素含量的结果,对苜蓿生产加工中的质量评价,以及苜蓿育种等研究中纤维品质的快速分析都具有重要意义。

关键词：近红外反射光谱(NIRS) 苜蓿纤维素半纤维素木质素

A LUMPING KINETICS FOR MODIFIEDFT REFORMING PROESS *** TION OF REACTION SYSTEM AND MODEL

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Journal of Energy Chemistry 1997年第4期 307-312页

作者： LIU zhong-Wen ZHANG zhi-Xin ZHOU Jing-Lai REN Jie(Institute of Coal Chemistry The Chinese Academy of SciencesTaiyuan, Shanxi 030001)

It is very difficult to exaCtly analyze the kinetics of the process of Modifed Fischer-Tropsch (MFT) Synthesis due to the complexityof the reaCtion system. In this paper, the reaction system was approximatedbased on the charcteristics of MFT reforming process and someexperimental results. Using the lumping method, a three-lump model wasoroposed for thes reaCtion system. The kinetics analysis of the reactionsystem can be carried out by using the model developed.

关键词： lumping kinetics model MFT HZSM-5

IL-17A ≠ Th17 in GvHD

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Cellular & Molecular Immunology 2018年第3期15卷 282-283页

作者： yongxia Wu Xue-zhong Yu Department of Microbiology and Immunology Medical University of South CarolinaCharleston29425SCUSA Department of Medicine Medical University of South CarolinaCharleston29425SCUSA

In the current issue of Cellular&Molecular Immunology,Cai et al.1 demonstrate that IL-17A-producing CD4 T(Th17)cells induce graft-versus-host disease(GvHD),whereas the IL-17A cytokine is protective in GvHD after allogeneic bone marrow transplantation(allo-BMT).This study clarifies the role of Th17 cells and IL-17A in GvHD and identifies a valid concern about targeting Th17 cells via IL-17A blockade for GvHD prevention.

关键词： Th17 GvHD protective

Reliable calculations of nuclear binding energies by the Gaussian process of machine learning

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Nuclear Science and Techniques 2024年第6期35卷 130-144页

作者： Zi-Yi Yuan Dong Bai Zhen Wang zhong-Zhou Ren School of Physics Science and Engineering Tongji UniversityShanghai 200092China College of Science Hohai UniversityNanjing 211100China Key Laboratory of Advanced Micro-Structure Materials Ministry of EducationShanghai 200092China

Reliable calculations of nuclear binding energies are crucial for advancing the research of nuclear physics. Machine learning provides an innovative approach to exploring complex physical problems. In this study, the nuclear binding energies are modeled directly using a machine-learning method called the Gaussian process. First, the binding energies for 2238 nuclei with Z > 20 and N > 20 are calculated using the Gaussian process in a physically motivated feature space, yielding an average deviation of 0.046 MeV and a standard deviation of 0.066 MeV. The results show the good learning ability of the Gaussian process in the studies of binding energies. Then, the predictive power of the Gaussian process is studied by calculating the binding energies for 108 nuclei newly included in AME2020. The theoretical results are in good agreement with the experimental data, reflecting the good predictive power of the Gaussian process. Moreover, the α-decay energies for 1169 nuclei with 50 ≤ Z ≤ 110 are derived from the theoretical binding energies calculated using the Gaussian process. The average deviation and the standard deviation are, respectively, 0.047 MeV and 0.070 MeV. Noticeably, the calculated α-decay energies for the two new isotopes ^ (204 )Ac(Huang et al. Phys Lett B 834, 137484(2022)) and ^ (207) Th(Yang et al. Phys Rev C 105, L051302(2022)) agree well with the latest experimental data. These results demonstrate that the Gaussian process is reliable for the calculations of nuclear binding energies. Finally, the α-decay properties of some unknown actinide nuclei are predicted using the Gaussian process. The predicted results can be useful guides for future research on binding energies and α-decay properties.

关键词： Nuclear binding energies decay Machine learning Gaussian process

基于品管圈的音乐疗法对恶性肿瘤患者心理状态及希望水平的影响

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医药高职教育与现代护理 2025年第1期8卷 44-51页

作者：戴惠开钟海燕王兵广州市番禺区妇幼保健院(广州市番禺区何贤纪念医院)肿瘤科广东广州510000

目的探究基于品管圈的音乐疗法对恶性肿瘤患者心理状态及希望水平的影响。方法利用便利抽样法选择2023年2月至9月在广州市番禺区妇幼保健院肿瘤科确诊为恶性肿瘤并住院治疗的患者141例作为研究对象,按照随机数字表法分为对照组(n=70)和... 详细信息

目的探究基于品管圈的音乐疗法对恶性肿瘤患者心理状态及希望水平的影响。方法利用便利抽样法选择2023年2月至9月在广州市番禺区妇幼保健院肿瘤科确诊为恶性肿瘤并住院治疗的患者141例作为研究对象,按照随机数字表法分为对照组(n=70)和干预组(n=71)。对照组予以常规心理干预,干预组予以基于品管圈的音乐疗法,比较两组患者干预前及干预33周后的广泛性焦虑量表(GAD-7)评分、健康问卷抑郁量表(PHQ-9)评分、Herth希望量表(HHI)评分、心理痛苦温度计(DT)评分。结果干预后,干预组GAD-7评分、PHQ-9评分、DT评分均低于对照组,HHI评分高于对照组,差异均有统计学意义(P<0.05)。干预后,干预组各圈员8个方面(解决问题能力、个人素质、沟通能力、责任心、自信心、团队精神、品管手法、积极性)均分较干预前提高(P<0.05)。结论基于品管圈的音乐疗法干预有利于改善恶性肿瘤患者焦虑、抑郁状态,减轻心理痛苦程度,升高希望水平。

关键词：品管圈音乐疗法恶性肿瘤心理状态希望水平

SYNTHESIS　OF　BENZO－15－CROWN－5　PHENOL－FORMALDEHYDE　RESIN　FOR　LITHIUM　ISOTOPE　SEPARATION

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Chinese Chemical Letters 1996年第3期7卷 289-292页

作者： YOU Heng SHI Qun YAN Duo Yuan WANG Xiao zhi ZHANG zhong Guo DENG Hui Bao LU (Institute of Photographic Chemistry, Academia Sinica, Beijing, 100101)(China Institute of Atomic Energy, Beijing, 102413) ACAD SINICA INST PHOTOG CHEMBEIJING 100101PEOPLES R CHINA CHINA INST ATOM ENERGY BEIJING 102413PEOPLES R CHINA

Four kinds of phenol-formaldehyde resins containing benzo-15-crown-5 ether were synthesized for lithium isotope *** adsolptioncapacity and isotope effect of Liin these resins have been investigated. Singleseparation factors 1.023￣1.056 were obtained with batch method from isotoperatios, 6Li and Li'were enriched in tile resin phase and liquid phase, respectively.

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Construction of 3D/2D indium vanadate /graphite carbon nitride with nitrogen defects Z-scheme heterojunction for improving photocatalytic carbon dioxide reduction

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Journal of Materials Science & Technology 2023年第23期154卷 129-139页

作者： Mingyi Yu Jianbo Wang Guojun Li Shule Zhang Qin zhong School of Chemistry and Chemical Engineering Nanjing University of Science and TechnologyNanjing 210094China

Indium vanadate (InVO4 ) possesses excellent potential in photocatalytic carbon dioxide (CO_(2) ) reduction, but further modifications of reducing charge recombination and increasing active sites are still needed. Herein, InVO4 /g-C3 N4 (InVO-CN) heterojunction composite photocatalysts were prepared via in situ formation of InVO4 nanoparticles on the lamellar structure of graphite carbon nitride (g-C3 N4 ) containing nitrogen (N) defects. Among these composites, 30% InVO-CN showed the best photoreduction performance for CO_(2) at normal temperature and pressure without sacrificial agent (carbon monoxide, CO: 20.14 μmol g–1 h–1;methane, CH4 : 3.46 μmol g–1 h–1 ), which were 1.8 and 2.8 times higher than these of pure g-C3 N4 and InVO4 . The excellent performance could be attributed to the enhancement of CO_(2) adsorption, and most importantly, the enhanced charge carrier separation and reduction capacity induced by the formation of Z-scheme heterojunction between InVO4 and g-C3 N4 . In this work, intimate heterojunction interfaces between materials were formed by introducing g-C3 N4 with defects in InVO4 , which provides a promising modification scheme.

关键词： Z-scheme heterojunction CO_(2)photoreduction g-C3N4,InVO4

Oxygen pressure acid leaching of Gacun complex Cu concentrates

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Journal of Central South University 2012年第1期19卷 71-76页

作者： XU Bin zhong Hong JIANG Tao School of Resources Processing and Bioengineering Central South UniversityChangsha 410083China Sichuan Xinyuan Mining Limited Liability Company Chengdu 610000China School of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China

The treatment of the Gacun complex Cu concentrate with high contents of Pb,Zn,Ag,etc by oxygen pressure acid leaching was *** is unusual that tetrahedrite,whose treatment was rarely studied,is the primary copper mineral of the *** of silver also occurs in the *** optimum operating parameters of oxygen pressure acid leaching were established by conditional *** scale test was carried out under the parameters,and the leaching rates of copper and zinc are as high as 97.10% and 89.83% while lead and silver are transformed into sulfate and sulfide respectively and stay in leaching *** copper and zinc in lixivium were reclaimed by extraction-electrowinning and purification-electrowinning,respectively,and the lead and silver in the residue were reclaimed separately by chloride leaching and thiourea *** extraction rate of copper achieves 96%,and the leaching rates of lead and silver reach 90% and 95%,respectively.

关键词： complex Cu concentrates oxygen pressure acid leaching synthetic reclaiming tetrahedrite

A bifunctional POM-based Cu-viologen complex with mixed octamolybdate clusters for rapid oxidation desulfurization and effective photogeneration of hydrogen

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Rare Metals 2024年第1期43卷 236-246页

作者： Lin Yang zhong Zhang Chao-Nan Zhang Xiu-Li Wang College of Chemistry and Materials Engineering Bohai UniversityJinzhou 121013China Professional Technology Innovation Center of Liaoning Province for Conversion Materials of Solar Cell Bohai UniversityJinzhou 121013China

The design and synthesis of catalysts for the oxidation desulfurization and production of hydrogen are extremely important for solving environmental pollution and energy ***,a novel bifunctional [α-Mo_(8)O_(26)]^(4-)/[β-Mo_(8)O_(26)]^(4-)-based Cu-viologen complex H_(4)[Cu_(2)~ⅠCl_(2)(Hbcbpy)_(4)] [α-Mo_(8)O_(26)] [β-Mo8O_(26)]·H_(2)O(BHU-2,Hbcbpy=1-(4-carboxybenzyl)-4,4'-bipyridinium) was synthesized and characterized by single-crystal X-ray diffraction(XRD),infrared radiation spectra,powder X-ray diffraction(PXRD) and X-ray photoelectron spectroscopy(XPS) *** structural characteristic of BHU-2 is the presence of two types of octamolybdate clusters [α-Mo_(8)O_(26)]^(4-)/[β-Mo_(8)O_(26)]^(4-)and a new binuclear Cu~Ⅰ-Hbcbpy complex linked by Cl-bridges[Cu_(2)ⅠCl_(2)(Hbcbpy)_(4)]^(4+).BHU-2 as a heterogeneous catalyst exhibits excellent activities to the oxidation desulfurization and photocatalytic hydrogen *** room temperature,BHU-2 can catalyze 96% conversion of methyl phenyl sulfide with 98% selectivity,and the process obeys the pseudo-first-order reaction kinetic with the half-life of9.6 *** notorious 2-chloroethyl ethyl sulfide can achieve 99% conversion with 98% selectivity within only1 min at the presence of BHU-2,and the turnover frequency(TOF) is up to 7400 h^(-1).BHU-2 also exhibits high catalytic activity for the oxidation of other aromatic and aliphatic thioethers within short time at room ***,BHU-2 shows a high catalytic activity for visible-light-driven hydrogen evolution with an H_(2) evolution rate of 1677.85 μmol·g^(-1)·h^(-1) within 10 ***,the catalytic activities do not decrease evidently after three cycles,revealing the prominent structural stability and recyclability.

关键词： Polyoxometalate Metal-organic complex Viologen Oxidation desulfurization Photocatalytic hydrogen production