检索结果-南通市图书馆

Frontiers of Environmental Science & Engineering 2018年第6期12卷 119-131页

作者： Xin Xing Yin Yu Hongbo Xi Guangqing Song yajiao wang Jiane Zuo Yuexi Zhou State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Research Center of Water Pollution Control Technology Chinese Research Academy of Environmental SciencesBeijing 100012China

HAP was verified to reduce the toxicity of TMP wastewater effectively. Actual TMP wastewater was fed in HAP with different dilution ratios for 240 days. Formaldehyde, 2-ethylacrolein, TMP and 2-ethylhexanol were all g... 详细信息

关键词： Trimethylolpropane wastewater Hydrolysis acidification process Toxicity Oxygen uptake rate 16S rDNA

真菌病毒BmPV1抑制Bipolaris maydis侵染寄主作用研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

菌物学报 2024年第6期43卷 96-104页

作者：王亚娇及增发栗秋生吴玉星韩森孔令晓河北省农林科学院植物保护研究所、农业农村部华北北部作物有害生物综合治理重点实验室、河北省农业有害生物综合防治技术创新中心、河北省作物有害生物综合防治国际科技联合研究中心河北保定071000 河北省农林科学院河北石家庄050000

玉米小斑病是我国玉米生产上的重要病害之一,每年造成玉米大幅减产。Bipolarismaydis partitivirus 1(BmPV1)病毒是玉米小斑病菌B.maydis携带的一种dsRNA病毒,具有弱毒性,能够引起B.maydis的致病力降低,但BmPV1对寄主侵染的影响并不明... 详细信息

玉米小斑病是我国玉米生产上的重要病害之一,每年造成玉米大幅减产。Bipolarismaydis partitivirus 1(BmPV1)病毒是玉米小斑病菌B.maydis携带的一种dsRNA病毒,具有弱毒性,能够引起B.maydis的致病力降低,但BmPV1对寄主侵染的影响并不明确。本研究采用农杆菌转化法将gfp基因分别导入到携带BmPV1病毒的玉米小斑病菌株3086-BmPV1以及脱毒菌株3086-non中,通过PCR扩增及荧光观察分析荧光标记菌株的稳定性;检测gfp基因的插入对菌株生物学特征的影响;采用叶面喷施孢子悬浮液的方式接种,并利用共聚焦显微镜观察带毒菌株及脱毒菌株对玉米叶片的侵染情况。PCR扩增和荧光观察结果表明,gfp基因成功整合到菌株3086-BmPV1和3086-non中;生物学特征分析表明gfp基因的插入对菌株的生长速度、产孢量和致病力无显著影响;侵染观察发现脱毒菌株3086-non-GFP对玉米叶片侵染有两条途径:直接侵染玉米表皮细胞并向邻近细胞扩散;侵染气孔,并通过气孔沿着细胞间隙向邻近细胞扩散。带毒菌株3086-BmPV1-GFP只能在叶片表面生长,多数不能侵染表皮细胞。综上所述,本研究观察了玉米小斑病菌带毒和不带毒菌株对玉米的侵染过程,明确了病毒BmPV1能够通过抑制小斑病菌对玉米叶片的侵入达到弱毒作用。

关键词：玉米小斑病真菌病毒BmPV1 弱毒性荧光标记侵染过程

合并慢性空洞性肺曲霉病的肺结核咯血患者临床特征及危险因素分析

在线全文

学校读者我要写书评

暂无评论

中国真菌学杂志 2024年第1期19卷 30-34页

作者：王亚娇张曼青阮建文海口市人民医院感染性疾病科海口571400

目的分析合并慢性空洞性肺曲霉病(chronic cavitary pulmonary aspergillosis,CCPA)的肺结核咯血患者的临床特征,探讨相关危险因素。方法回顾性分析住院诊断为合并CCPA的肺结核咯血患者57例,同时随机选取同期住院诊断为未合并CCPA的肺... 详细信息

目的分析合并慢性空洞性肺曲霉病(chronic cavitary pulmonary aspergillosis,CCPA)的肺结核咯血患者的临床特征,探讨相关危险因素。方法回顾性分析住院诊断为合并CCPA的肺结核咯血患者57例,同时随机选取同期住院诊断为未合并CCPA的肺结核咯血患者57例作为对照组。对比两组患者间临床特征、辅助检查、诊治及预后,通过二分类Logistic回归分析相关危险因素。结果与未合并CCPA组相比,合并CCPA组易出现大咯血,存在长期吸烟史,消瘦、气促、乏力等临床症状更明显,常伴有血红蛋白、血清白蛋白水平下降(P<0.5)。合并CCPA组肺部影像学均存残留空洞,54.38%伴有洞中球征,血GM实验、真菌培养、真菌免疫荧光染色阳性率分别为54.38%、38.59%、70.17%,经手术切除及至少6个月的抗真菌治疗后随访病情稳定。经Logistic二分类分析合并CCPA的肺结核咯血患者的危险因素有长期吸烟史、体重指数<18.5 kg/m 2、血清白蛋白<35 g/L(P<0.5)。结论存在肺部残留空洞的肺结核患者易合并CCPA,常伴有大咯血,需早期完善真菌培养、真菌免疫荧光染色、病理等诊断,及时抗真菌、手术等综合治疗,改善预后。

关键词：肺结核咯血慢性空洞性肺曲霉病危险因素

Ammonia and phosphorus removal from using cash crop waste-derived agricultural runoff biochars

在线全文

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2020年第3期14卷 141-153页

作者： Alisa Salimova Jian'e Zuo Fenglin Liu yajiao wang Sike wang Konstantin Verichev State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Beijing JingYi Air Protection&Technology Company Wanda Plaza93 Jianguo RoadChaoyang DistrictBeijing 100022China Institute of Civil Engineering Faculty of Engineering SciencesUniversidad Austral de ChileValdivia 5090000Chile

Adsorption of biochars(BC)produced from cash crop residuals is an economical and practical technology for removing nutrients from agricultural runoff.In this study,B C made of orange tree trunks and tea tree twigs from the Laoguanhe Basin were produced and modified by aluminum chloride(Al-modified)and ferric sulfate solutions(Fe-modified)under various pyrolysis temperatures(200℃-600℃)and residence times(2-5 h).All produced and modified B C were further analyzed for their abilities to adsorb ammonia and phosphorus with initial concentrations of 10-40 mg/L and 4-12 mg/L,respectively.Fe-modified Tea Tree B C 2h/400℃showed the highest phosphorus adsorption capacity of 0.56 mg/g.Al-modified Orange Tree B C 3h/500℃showed the best performance for ammonia removal with an adsorption capacity of 1.72 mg/g.FTIR characterization showed that P=O bonds were formed after the adsoiption of phosphorus by modified BC,N-H bonds were formed after ammonia adsorption.X P S analysis revealed that the key process of ammonia adsorption was the ion exchange between K+and N H 44.Phosphorus adsorption was related to oxidation and interaction between PO43-and Fe3+.According to X R D results,ammonia was found in the form of potassium amide,while phosphorus was found in the form of iron hydrogen phosphates.The sorption isotherms showed that the Freundlich equation fits better for phosphorus adsorption,while the Langmuir equation fits better for ammonia adsorption.The simulated runoff infiltration experiment showed that 97.3%of ammonia was removed by Al-modified Orange tree B C 3h/500℃,and 92.9%of phosphorus was removed by Fe-modified Tea tree B C 2h/400℃.

关键词： Biochar Adsorption Ammonia removal Phosphorus removal Agricultural runoff

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

气质法对含邻苯二甲酸酯类白酒质控样的检测

农产品加工 2024年第11期 77-78,82页

作者：王亚慧王亚娇贾才鑫锡林郭勒职业学院内蒙古锡林浩特026000 锡林郭勒盟食品科学与检测实验中心内蒙古锡林浩特026000 锡林郭勒盟中心医院内蒙古锡林郭勒盟026099 华润电力(锡林郭勒)有限公司内蒙古锡林郭勒盟026200

为了监测实验室的检测能力,进一步提高食品中邻苯二甲酸酯类塑化剂的检验工作质量,保证检验结果的准确及可靠性,采用气质法对含邻苯二甲酸酯类塑化剂白酒质控样进行检测,采用离子监测扫描模式(SIM),以保留时间和定性离子碎片丰度比定性... 详细信息

为了监测实验室的检测能力,进一步提高食品中邻苯二甲酸酯类塑化剂的检验工作质量,保证检验结果的准确及可靠性,采用气质法对含邻苯二甲酸酯类塑化剂白酒质控样进行检测,采用离子监测扫描模式(SIM),以保留时间和定性离子碎片丰度比定性,同位素内标法定量。结果表明,在0~1μg/mL的质量浓度范围内,16种邻苯二甲酸酯标准曲线相关系数均大于0.997,加标回收率为90%~110%,检出值均在质控样证书中的特性值区间之内,考核结果为合格。

关键词：气质法苯二甲酸酯类塑化剂质控样定量

电弧直读发射光谱法测定地球化学调查样品中银硼锡含量

在线全文

学校读者我要写书评

暂无评论

应用化工 2024年第6期53卷 1478-1480,1485页

作者：王亚娇张随安杨春段玉宇杨凯淇王高红杨中瑞张伟陕西省地质调查实验中心陕西西安710000 生态环境损害鉴定评估中心陕西西安710000 陕西省水利电力勘测设计研究院陕西西安710001

采用聚光科技E5000电弧直读发射光谱测试地球化学调查样品中银、硼、锡含量。最佳实验条件为:预燃阶段电流5 A,保持10 s;激发阶段电流14 A,保持42 s;积分时间25 s;上电极为平头圆形状,下电极为细颈杯状;锗为内标元素。此条件下,测试样... 详细信息

采用聚光科技E5000电弧直读发射光谱测试地球化学调查样品中银、硼、锡含量。最佳实验条件为:预燃阶段电流5 A,保持10 s;激发阶段电流14 A,保持42 s;积分时间25 s;上电极为平头圆形状,下电极为细颈杯状;锗为内标元素。此条件下,测试样品中银、硼、锡的检出限分别为0.016,0.95,0.32μg/g,精密度在10%以内,测试结果均在标准值范围内。实验方法固体进样,操作简单,测试周期短,污染小,是测试地球化学调查样品中银、硼、锡含量时值得推广的测试方法。

关键词：地球化学调查样品银硼锡电弧直读发射光谱仪

参苓白术颗粒联合匹维溴铵对腹泻型肠易激综合征患者免疫功能和肠道菌群及脑肠肽的影响

在线全文

学校读者我要写书评

暂无评论

中国中西医结合消化杂志 2024年第3期32卷 244-250页

作者：冯南林鸿千郭义锦王亚娇海口市第四人民医院消化内科海口571100 海口市人民医院感染内科

目的探讨参苓白术颗粒联合匹维溴铵对腹泻型肠易激综合征(irritable bowel syndrome with predominant diarrhea,IBS-D)患者免疫功能、肠道菌群及脑肠肽的影响。方法选取2018年2月—2021年9月收治的168例IBS-D患者为研究对象,随机分为... 详细信息

目的探讨参苓白术颗粒联合匹维溴铵对腹泻型肠易激综合征(irritable bowel syndrome with predominant diarrhea,IBS-D)患者免疫功能、肠道菌群及脑肠肽的影响。方法选取2018年2月—2021年9月收治的168例IBS-D患者为研究对象,随机分为观察组和对照组,每组84例。对照组服用匹维溴铵治疗,观察组在对照组基础上采用参苓白术颗粒治疗。比较两组患者的疗效、免疫功能、肠道菌群、脑肠肽及不良反应。结果观察组有效率(90.48%)高于对照组(73.81%),差异有统计学意义(χ2=8.207,P=0.042)。治疗后,观察组的免疫球蛋白A(immunoglobulin A,IgA)、免疫球蛋白M(immunoglobulin M,IgM)、CD3+、CD4+和CD4+/CD8+水平均显著高于对照组(t=7.955、8.371、9.712、7.684、4.817,P<0.001)。治疗后,观察组的双歧杆菌、乳酸杆菌、拟杆菌的菌落数水平明显高于对照组(t=4.256、5.328、4.007,P<0.001),肠杆菌和肠球菌的菌落数水平明显低于对照组(t=-4.764、-8.083,P<0.001)。观察组治疗后的神经生长因子(nerve growth factor,NGF)、脑源性神经营养因子(brain-derived neurotrophic factor,BDNF)、5-羟色胺(5-hydroxytryptamine,5-HT)和P物质(substance P,SP)水平明显低于对照组(t=-9.639、-13.529、-17.321、-16.902,P<0.001)。分层线性回归表明,参苓白术颗粒使男性患者的双歧杆菌、乳酸杆菌、拟杆菌的暴露风险上升了21%、32%和36%,使肠杆菌和肠球菌的暴露风险下降了33%和25%;参苓白术颗粒使女性患者的双歧杆菌、乳酸杆菌、拟杆菌的暴露风险上升了23%、29%和32%,使肠杆菌和肠球菌的暴露风险下降了37%和22%。不同性别和组别之间无明显交互效应(P=0.376、0.283、0.197、0.356、0.241)。结论参苓白术颗粒能够提高IBS-D患者的疗效,增强免疫功能,调节肠道菌群,降低血清NGF、BDNF水平,有很好的临床应用价值。

关键词：参苓白术颗粒腹泻型肠易激综合征免疫功能肠道菌群脑肠肽

Diagnosis of sewer pipe defects on image recognition of multi-features and support vector machine in a southern Chinese city

在线全文

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2019年第2期13卷 29-41页

作者： Xiangyang Ye Jian’e Zuo Ruohan Li yajiao wang Lili Gan Zhonghan Yu Xiaoqing Hu State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Thunip Corp. Ltd.27F/Section CS&T BuildingTsinghua S&T ParkBeijing 100084China China Water Environment Group.10F Campbell Building89th Jinbao StreetBeijing 101101China

Closed circuit television(CCTV)systems are widely used to inspect sewer pipe conditions.During the diagnosis process,the manual diagnosis of defects is time consuming,labor intensive and error prone.To assist inspectors in diagnosing sewer pipe defects on CCTV inspection images,this paper presents an image recognition algorithm that applies features extraction and machine learning approaches.An algorithm of image recognition techniques,including Hu invariant moment,texture features,lateral Fourier transform and Daubechies(DBn)wavelet transform,was used to describe the features of defects,and support vector machines were used to classify sewer pipe defects.According to the inspection results,seven defects were defined;the diagnostic system was applied to a sewer pipe system in a southern city of China,and 28,760 m of sewer pipes were inspected.The results revealed that the classification accuracies of the different defects ranged from 51.6% to 99.3%.The overall accuracy reached 84.1%.The diagnosing accuracy depended on the number of the training samples,and four fitting curves were applied to fit the data.According to this paper,the logarithmic fitting curve presents the highest coefficient of determination of 0.882,and more than 200 images need to be used for training samples to guarantee the accuracy higher than 85%.

关键词： Sewer pipe defects Defect diagnosing Image recognition Multi-features extraction Support vector machine

Comprehensive health condition assessment on partial sewers in a southern Chinese city based on fuzzy mathematic methods

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2014年第1期8卷 144-150页

作者： Lili GAN Jiane ZUO yajiao wang Thong Soon LOW Kaijun wang State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 China

A self-developed sewer health assessment system using the fuzzy comprehensive evaluation and analytical hierarchy process was applied to give a comprehensive health condition evaluation on part of the local sewers in a southern Chinese city based on the sewer video data collected by a sewer inspection closed circuit television （CCTV） robot. Aside from the overall condition evaluation, the structure, function, and stability status of the sewer were also analyzed using the method. A comprehensive index H was proposed to give the overall health condition of pipes with different defects, and Ht, Hs, and If were used to quantify the defects affecting the tightness, stability, and function of the pipe, respectively. Results show that 48% of the inspected pipes were in good condition （0〈H〈0.25）, and about 33% of the sewer pipes analyzed were categorized to be at severe or urgent condition levels （H 〉 0.5）, although most of the pipes were installed only within five years. Frequent sedimentation affects the function of the sewer, and deformation and joint damage affect the structure of the sewer.

关键词： sewer health condition assessment analyticalhierarchy process fuzzy comprehensive evaluation fuzzymathematic method

肿瘤患者接受中医护理适宜技术促进因素的质性研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国医药指南 2024年第10期22卷 5-8页

作者：圣夏黄碧春林桂娇刘丽敏吴贞杨柳王雅娇吴欣蕾林如佳福建中医药大学护理学院福州350122 福建中医药大学附属第三人民医院福州350122

目的探讨促进肿瘤患者接受中医护理适宜技术的相关因素。方法采用描述性质性研究,以目的抽样法选取肿瘤患者为研究对象,对其进行半结构式访谈,并采用定向内容分析法整理和分析访谈资料。结果本次研究共访谈11例肿瘤患者,经分析和整理... 详细信息

目的探讨促进肿瘤患者接受中医护理适宜技术的相关因素。方法采用描述性质性研究,以目的抽样法选取肿瘤患者为研究对象,对其进行半结构式访谈,并采用定向内容分析法整理和分析访谈资料。结果本次研究共访谈11例肿瘤患者,经分析和整理后,提炼出3个主题。中医护理适宜技术在调理身体状态、缓解不适症状、心理支持方面给患者提供了感知技术有用性。中医护理适宜技术的简便性和安全性是其优势所在,也是促进患者接受和使用的重要因素。中医传统文化根植于国人心中,对患者接受中医护理适宜技术影响深远。结论中医适宜技术的有用、安全、简便,以及中医文化是促进肿瘤患者对中医适宜技术接受因素,有利于患者享有中医护理适宜技术,减轻不适,提高生活质量。

关键词：肿瘤中医护理适宜技术接受描述性质性研究