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不同膨胀型防火涂料烟毒性对比分析研究

化工时刊 2024年第1期38卷 12-15,60页

作者：魏成龙蔡宇武张文喜覃况李龙江吴丹江苏省产品质量监督检验研究院南京210007

为研究膨胀型防火涂料在火灾时的烟毒性特征,采用NBS烟密度实验箱对6种膨胀型防火涂料进行实验室尺度火灾模拟实验,结合傅立叶红外(FTIR)分析系统对烟气中8种气体进行采样分析,采用常规毒性指数(CIT_(G))定量评价烟气毒性。结果表明:膨... 详细信息

为研究膨胀型防火涂料在火灾时的烟毒性特征,采用NBS烟密度实验箱对6种膨胀型防火涂料进行实验室尺度火灾模拟实验,结合傅立叶红外(FTIR)分析系统对烟气中8种气体进行采样分析,采用常规毒性指数(CIT_(G))定量评价烟气毒性。结果表明:膨胀型防火涂料受热后产生的烟气主要组分为CO_(2)、CO、NO_(x)和HCN;环氧树脂基膨胀型防火涂料的毒性较其他树脂基的涂料大很多,4 min和8 min时NO_(x)气体质量浓度分别为108.43 mg·m^(-3)和136.47 mg·m^(-3),均大于基准浓度38 mg·m^(-3),8 min时的CITG值达到0.377。FITR气体分析方法可实现在线、多组分气体快速分析,但气体含量在检出限附近时干扰和误差较大。

关键词：膨胀型防火涂料烟毒性定量评价常规毒性指数

在充分水化基础上碳酸氢钠联合乙酰半胱氨酸对减少造影剂肾病的作用

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中外医疗 2024年第4期43卷 1-4页

作者：雷玲艳邝日禹李依阳覃凯耿思远苏晓琳广西壮族自治区民族医院/广西医科大学附属民族医院心内科广西南宁530001

目的评价在充分水化基础上碳酸氢钠(Sodium Bicarbonate,SB)联合N-乙酰半胱氨酸(N-acetylcysteine,NAC)对慢性肾脏病(Chronic Kidney Disease,CKD)的冠状动脉粥样硬化性心脏病(简称冠心病)(Coronary Heart Disease,CHD)患者减少造影剂肾病(Contrast-Induced Nephropathy,CIN)的作用。方法随机选取2020年8月-2022年7月在广西壮族自治区民族医院行经皮冠状动脉介入治疗(Percutaneous Coronary Interven⁃tions,PCI)的120例CKD患者为研究对象,使用随机数表法分为常规治疗组(NS组)、碳酸氢钠(SB组)、乙酰半胱氨酸组(NAC组)、碳酸氢钠联合乙酰半胱氨酸组(SB+NAC组),每组30例。NS组于PCI术前给予持续水化治疗;SB组在NS组基础上给予SB;NAC组在NS组基础上于术前和术后口服N-乙酰半胱氨酸泡腾片。SB+NAC组在SB组基础上同NAC组处理。分析4组患者在术前及PCI术后48 h血清指标血肌酐(Serum Cre⁃atinine,SCr)、胱抑素C(Cystatin C,Cys-C),计算肌酐清除率(Creatinine Clearance Rate,Ccr),估算记录肾小球滤过率(Estimated Glomerular Filtration Rate,eGFR)。结果NS组、SB组、NAC组、SB+NAC组患者术后eGFR、Ccr、SCr、Cys-C比较,差异有统计学意义(P均<0.05)。NS组、SB组、NAC组、SB+NAC组患者发生CIN例数分别为7例、5例、3例、0,4组患者CIN发生率比较,差异有统计学意义(χ^(2)=8.152,P<0.05)。结论水化基础上碳酸氢钠、N-乙酰半胱氨酸以及两者联合应用有效减少CKD患者行PCI术后CIN的发生,具有一定效果,且两种药物联合应用要优于单独应用。

关键词：造影剂肾病经皮冠状动脉介入治疗碳酸氢钠 N-乙酰半胱氨酸

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Engineering the Surface Structure of Functional Nanocrystalline Materials and their Corresponding Applications

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Engineering the Surface Structure of Functional Nanocrystall...

Entanglement Evolution of Two-Coupled Spins in a Time-Dependent Rotating Magnetic Field

第二届海峡两岸功能材料科技与产业峰会（2015）

作者： qin kuang Yaqi Jiang Zhiyuan Jiang Zhaoxiong Xie State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsCollege of Chemistry and Chemical EngineeringXiamen University

The physical and chemical properties of nanocrystalline materials depend on the surface structures.Nanocrystals with high-energy facets exposed usually show high physical and chemical activities,due to abundant unsaturated coordination atoms and atomic steps and ledges.However,in order to minimize the surface energy of the crystals,the high-energy facets quickly disappeared in the crystal growth process.Therefore,controllable synthesis of the nanocrystals exposed with high-energy facets is still a challenging topic.

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Communications in Theoretical Physics 2008年第10期50卷 883-888页

作者： ZHANG Shi-Xun ZHU qin-Sheng kuang Xiao-Yu Institute of Atomic and Molecular Physics Sichuan University Chengdu 610065 China International Center for Materials Physics Chinese Academy of Sciences Shenyang 110016 China

We study the dynamics evolution of a two-qubit Heisenberg XXX spin chain under a time-dependentrotating magnetic field.Based on the algebraic structure of the non-autonomous system,the exact solution of theSchrdinger equation is obtained by using the method of algebraic dynamics.Based on the time-dependent analyticalsolution,we further study the entanglement evolution between the two coupled spins for different initial states,and findthat the entanglement is determined by the coefficients of the initial state and the coupling constant J of the system.

关键词：代数动力学缠结问题非自主系统试验研究

Effects of Health Qigong Exercise on Depression and Anxiety in Patients with Parkinson’s Disease

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International Journal of Mental Health Promotion 2022年第6期24卷 855-867页

作者： Xiying Li Alyx Taylor Jinming Li Ting Wang Jing kuang Zhihao Zhang Xiaolei Liu Tingting Liu Xia qin Shenghua Lu Liye Zou School of Physical Education Yunnan Minzu UniversityKunming650031China School of Rehabilitation Sport and PsychologyAECC University CollegeBournemouthBH52DFUK Body-Brain-Mind Laboratory School of PsychologyShenzhen UniversityShenzhen518060China Chinese Traditional Regimen Exercise Intervention Research Center Beijing Sport UniversityBeijing100084China Foreign Language School Yunnan Minzu UniversityKunming650031China College of Sports Science Jishou UniversityJishou416000China Hunan Academy of Education Sciences Changsha410082China

Objective: This study explored the effects of Health Qigong exercise on depression and anxiety in patients withParkinson’s disease (PD). Methods: A total of 42 volunteers who met the inclusion criteria were recruited andrandomly allocated into the experimental group and the control group. The experimental group carried out60-minute sessions of Health Qigong exercise five times a week for 12 weeks while the control group did not performany regular physical exercise. Data on cognitive impairment, psychomotor retardation, somatic anxiety,weight loss and sleep disorders, the sum score of the 17-item Hamilton Depression Rating Scale (HDRS-17), stateanxiety, trait anxiety as well as the sum score of the State-Trait Anxiety Inventory (STAI) were collected for threerepeated measurements (baseline, 6, and 12 weeks). Results: Significant differences were observed in depression,state anxiety, trait anxiety, cognitive impairment and psychomotor retardation in the experimental group but nodifference in somatic anxiety, weight loss and sleep disorders. Conclusion: Health Qigong exercise can pose positivepsychological effects and alleviate the depression and anxiety in patients with Parkinson’s disease. It can beapplied as an accessible supplement to the existent drug treatment for PD.

关键词： Health Qigong parkinsons disease depression anxiety

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刺通草的营养成分分析及其氨基酸评价

食品安全质量检测学报 2024年第7期15卷 305-313页

作者：陈玉芹赵成法沐远王春梅尹红星匡钰胡永亮云南省德宏热带农业科学研究所瑞丽678600 大理大学东喜玛拉雅研究院大理671000

目的研究刺通草各部位营养成分,评价其氨基酸营养价值。方法通过对刺通草花苞、嫩叶、老叶、茎皮等部位的蛋白质、总灰分、氨基酸、氮、磷、钾、钙进行测定与分析,综合评价各部位的营养情况。结果刺通草不同部位的营养成分存在差异,花... 详细信息

目的研究刺通草各部位营养成分,评价其氨基酸营养价值。方法通过对刺通草花苞、嫩叶、老叶、茎皮等部位的蛋白质、总灰分、氨基酸、氮、磷、钾、钙进行测定与分析,综合评价各部位的营养情况。结果刺通草不同部位的营养成分存在差异,花苞的蛋白质及氮、磷、钾含量最高,分别为18.60%、2.98%、0.512%、3.00%;茎皮中总灰分和钙含量最高,分别为31.32%、7.28%,约为花苞和叶的3倍。各部位均检测到16种氨基酸和6种必需氨基酸,总氨基酸含量为47.59~106.57 mg/g,必需氨基酸含量为17.07~38.14 mg/g,必需氨基酸占总氨基酸含量的34.70%~40.27%。精氨酸、谷氨酸、天冬氨酸为花苞和茎皮的主要氨基酸;谷氨酸、天冬氨酸、亮氨酸为嫩叶和老叶的主要氨基酸;刺通草各部位的第一限制性氨基酸为蛋氨酸+胱氨酸;各部位呈味氨基酸和药用氨基酸含量丰富,分别占总氨基酸的88%和56%以上。各部位的氨基酸比值系数分(score of ratio coefficient of amino acid,SRC)值介于65.42~71.11之间,平均值为67.16。结论刺通草花苞的蛋白质等营养含量丰富,叶的氨基酸营养价值较高,茎皮中钙含量非常丰富。本研究可为刺通草资源开发和利用提供科学参考。

关键词：刺通草营养价值氨基酸药食两用植物

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一种高灵敏度的新型光纤光栅倾角传感器

光学学报 2022年第7期42卷 43-53页

作者：邢心魁邝卡斌覃荷瑛桂林理工大学土木与建筑工程学院广西桂林541004 桂林理工大学广西有色金属隐伏矿床勘查及材料开发协同创新中心广西桂林541004 广西岩土力学与工程重点实验室广西桂林541004

为实现结构的长期安全监测,设计了一种杠杆原理与摆锤结构相结合的光纤光栅倾角传感器,并在此基础上进行了理论分析、数值计算和传感器性能测试。对比分析了数值计算和实验结果,发现二者具有较好的一致性。为增大传感器的灵敏度,对传感... 详细信息

为实现结构的长期安全监测,设计了一种杠杆原理与摆锤结构相结合的光纤光栅倾角传感器,并在此基础上进行了理论分析、数值计算和传感器性能测试。对比分析了数值计算和实验结果,发现二者具有较好的一致性。为增大传感器的灵敏度,对传感器的尺寸参数进行了设计。考虑到光纤光栅与金属材料之间的锚固效率和传感器的制作工艺要求,综合给出了效果最佳的组合值。实验结果表明,所提光纤光栅倾角传感器的有效监测范围为-5°~5°,传感器的灵敏度为359.04 pm/(°),线性相关度可达0.999,测量重复性误差为3.433%。此外,所提光纤光栅倾角传感器降低了温度对角度测量的影响,适用于温度变化较大且精度要求较高的工作环境,有良好的应用前景。

关键词：光纤光学光纤光栅倾角传感器温度自补偿安全监测

Celiomesenteric trunk: New classification based on multidetector computed tomography angiographic findings and probable embryological mechanisms

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World Journal of Clinical Cases 2019年第23期7卷 3980-3989页

作者： Wei Tang Jing Shi Lian-qin kuang Shuang-Yue Tang Yi Wang Department of Radiology Daping HospitalArmy Medical UniversityChongqing 400042China Sichuan Key Laboratory of Medical Imaging Department of RadiologyAffiliated Hospital of North Sichuan Medical CollegeNanchong 637000Sichuan ProvinceChina Department of Nursing Hospital of Chengdu University of Traditional Chinese MedicineChengdu 610072Sichuan ProvinceChina

BACKGROUND In previous studies,celiomesenteric trunk(CMT)was narrowly defined as a hepato-gastro-spleno-mesenteric(HGSM)trunk,but other possible types were ignored.With the widespread use of multidetector computed tomography(MDCT)angiography,it is easy to collect a large sampling of data on arterial anatomy of the abdomen in daily radiological practice.A new classification system for CMT may be created based on its MDCT angiographic findings and variation patterns.AIM To identify the spectrum and prevalence of CMT according to a new classification based on MDCT angiographic findings,and discuss the probable embryological mechanisms to explain the CMT variants.METHODS A retrospective study was carried out on 5580 abdominal MDCT angiography images.CMT was defined as a single common trunk arising from the aorta and its branches including the superior mesenteric artery and at least two major branches of the celiac trunk.Various types of CMT were investigated.RESULTS Of the 5580 patients,171(3.06%)were identified as having CMT.According to the new definitions and classification,the CMT variants included five types:Ⅰ,Ⅱ,Ⅲ,Ⅳ and Ⅴ,which were found in 96(56.14%),57(33.33%),4(2.34%),3(1.75%)and 8(4.68%)patients,respectively.The CMT variants also were classified as long type(106 patients,61.99%)and short type(65 patients,38.01%)based on the length of single common trunk.Further CMT classification was based on the origin of the left gastric artery:Type a(92 patients,53.80%),type b(57 patients,33.33%),type c(11 patients,6.43%)and type d(8 patients,4.68%).CONCLUSION We systematically classified CMT variants according to our new classification system based on MDCT angiographic findings.Dislocation interruption,incomplete interruption and persistence of the longitudinal anastomosis could all be embryological mechanisms of various types of CMT variants.

关键词： Celiac artery Mesenteric artery superior Anatomic variation Classification Computed tomography angiography

Structure of plant photosystem I−light harvesting complex I supercomplex at 2.4Å resolution

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Journal of Integrative Plant Biology 2021年第7期63卷 1367-1381页

作者： Jie Wang Long-Jiang Yu Wenda Wang Qiujing Yan Tingyun kuang Xiaochun qin Jian-Ren Shen Photosynthesis Research Center Key Laboratory of PhotobiologyInstitute of BotanyChinese Academy of SciencesBeijing100093 China University of Chinese Academy of Sciences Beijing100049 China School of Biological Science and Technology University of JinanJinan250022 China

Photosystem I(PSI)is one of the two photosystems in photosynthesis,and performs a series of electron transfer reactions leading to the reduction of ferredoxin.In higher plants,PSI is surrounded by four light-harvesting complex I(LHCI)subunits,which harvest and transfer energy efficiently to the PSI core.The crystal structure of PSI-LHCI supercomplex has been analyzed up to 2.6Åresolution,providing much information on the arrangement of proteins and cofactors in this complicated supercomplex.Here we have optimized crystallization conditions,and analyzed the crystal structure of PSI-LHCI at 2.4Åresolution.Our structure showed some shift of the LHCI,especially the Lhca4 subunit,away from the PSI core,suggesting the indirect connection and inefficiency of energy transfer from this Lhca subunit to the PSI core.We identified five new lipids in the structure,most of them are located in the gap region between the Lhca subunits and the PSI core.These lipid molecules may play important roles in binding of the Lhca subunits to the core,as well as in the assembly of the supercomplex.The present results thus provide novel information for the elucidation of the mechanisms for the light-energy harvesting,transfer and assembly of this supercomplex.

关键词： crystal structure Lhca LHCI light-harvesting pea photosynthesis photosystem I