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不同杀菌剂对玉米白斑病的田间防治效果

植物保护 2024年第3期50卷 355-360页

作者：程鑫罗茗钟杨峰韩伟君孙华石洁刘文德吴瀚翔中国农业科学院植物保护研究所植物病虫害综合治理全国重点实验室北京100193 云南省普洱市植保植检站普洱665000 云南省植保植检站昆明650034 河北省农林科学院植物保护研究所保定071000

玉米白斑病是我国西南玉米产区一种新发病害,尚缺乏有效的防控措施。为筛选玉米白斑病的防控药剂,本研究选用19种不同作用机制的杀菌剂,于2022年-2023年在云南省普洱市开展田间试验,分别于玉米10叶期和抽雄吐丝期采用叶面喷雾法施药1次... 详细信息

玉米白斑病是我国西南玉米产区一种新发病害,尚缺乏有效的防控措施。为筛选玉米白斑病的防控药剂,本研究选用19种不同作用机制的杀菌剂,于2022年-2023年在云南省普洱市开展田间试验,分别于玉米10叶期和抽雄吐丝期采用叶面喷雾法施药1次,评价各药剂的田间防效。结果显示,9种防治真菌性病害的杀菌剂在最后1次施药后28 d对白斑病的防治效果超过50%,包括250 g/L嘧菌酯悬浮剂、40%氟环唑悬浮剂、24%井冈霉素A水剂、40%咪鲜胺水乳剂和10%苯醚甲环唑微乳剂5种单剂,以及325 g/L苯甲·嘧菌酯悬浮剂、40%丁香·戊唑醇悬浮剂、40%唑醚·戊唑醇悬浮剂和30%氟环·咪鲜胺微乳剂4种混剂。保护性杀菌剂代森锰锌和有机铜杀菌剂喹啉铜仅表现了23.26%和29.00%的微弱防效。卵菌病害特效药剂烯酰吗啉,防治细菌性病害的杀菌剂春雷霉素、四霉素、中生菌素以及植物免疫诱抗剂6%寡糖·链蛋白可湿性粉剂的防效较差,均低于20%。本研究发现部分甲氧基丙烯酸酯类和三唑类杀菌剂对玉米白斑病具有较好的田间防治效果,建议现阶段在生产上采用二者的复配药剂如苯甲·嘧菌酯,唑醚·戊唑醇等开展田间防控。

关键词：玉米白斑病化学防治杀菌剂防治措施

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气相色谱-质谱法分析芥花油中的挥发性成分和脂肪酸

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化学研究与应用 2024年第6期36卷 1406-1411页

作者：贺茂芳张博唐一梅张育珍张剑韩禄秦蓓西安医学院药学院西安医学院药物研究所陕西西安710021

研究芥花油的挥发性成分和脂肪酸的组成及相对含量。采用顶空气相色谱-质谱法直接分析芥花油的挥发性成分和相对含量;将芥花油中的脂肪酸酯化后采用气相色谱-质谱法进行分离鉴定,峰面积归一化法计算单个脂肪酸的相对含量。当顶空进样器... 详细信息

研究芥花油的挥发性成分和脂肪酸的组成及相对含量。采用顶空气相色谱-质谱法直接分析芥花油的挥发性成分和相对含量;将芥花油中的脂肪酸酯化后采用气相色谱-质谱法进行分离鉴定,峰面积归一化法计算单个脂肪酸的相对含量。当顶空进样器在170℃平衡20 min、芥花油质量为3.0 g时,挥发性物质的种类和丰度最强。在最佳进样条件下,共鉴定出39种挥发性物质,占挥发性成分总量的98.20%;含量最高的是醛类,共20种,占比61.52%;醇类共10种,占比17.74%;烯类共4种,占比13.70%;其他种类5种,占比5.24%。含量在5%以上的物质有6种,它们分别是壬醛,(E)-2-十烯醛,(E,E)-2-十一烯醛,1-甲氧基-2-丙烯,己醛,1-甲基环丙烷甲醇。芥花油中共检测出19种脂肪酸,包括饱和脂肪酸共11种,占比5.94%;单不饱和脂肪酸共6种,占比9.92%;多不饱和脂肪酸共2种,占比84.14%。含量最高的是α-亚麻酸(63.25%),其次是亚油酸(20.89%)。

关键词：芥花油脂肪酸挥发性成分顶空进样气相色谱-质谱法

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基于雾计算的制造物联网数据处理技术综述

计算机与现代化 2024年第1期 13-20页

作者：韩坤王政段俊勇杨化林青岛科技大学机电工程学院山东青岛266061

制造物联网(MIoT)是一种将制造业生产系统与互联网连接相结合的技术,数据处理更是在制造物联网中发挥着至关重要的作用。随着制造业规模的不断扩大,传统的云计算已经逐渐不能满足数据处理的需求,雾计算的发展则能有效地减少决策延迟,提... 详细信息

制造物联网(MIoT)是一种将制造业生产系统与互联网连接相结合的技术,数据处理更是在制造物联网中发挥着至关重要的作用。随着制造业规模的不断扩大,传统的云计算已经逐渐不能满足数据处理的需求,雾计算的发展则能有效地减少决策延迟,提高系统效率。本文概述基于雾计算的制造物联网数据处理技术,首先介绍MIoT数据的产生、特点,以及数据处理过程中所要面对的挑战。其次,介绍基于雾计算的MIoT数据处理架构。然后,介绍雾计算数据处理的关键技术。最后,介绍该架构在部署时需要面对的挑战,以及雾计算在MIoT中应用的未来发展方向。

关键词： MIoT 数据处理技术雾计算数据安全

二仙汤结合温针灸治疗肾虚肝郁型卵巢早衰的临床研究

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中医临床研究 2024年第6期16卷 109-112页

作者：伊西娟韩秀庆高善霞临沂市中心医院山东临沂276400

目的:探讨二仙汤结合温针灸治疗肾虚肝郁型卵巢早衰的临床疗效。方法:将2019年12月31日―2021年1月1日临沂市中心医院诊疗的120例肾虚肝郁型卵巢早衰患者作为研究对象,随机将其分为中药组、西药组、针药组,每组40例,中药组采用二仙汤进... 详细信息

目的:探讨二仙汤结合温针灸治疗肾虚肝郁型卵巢早衰的临床疗效。方法:将2019年12月31日―2021年1月1日临沂市中心医院诊疗的120例肾虚肝郁型卵巢早衰患者作为研究对象,随机将其分为中药组、西药组、针药组,每组40例,中药组采用二仙汤进行治疗,西药组采用常规西药进行治疗,针药组采用二仙汤结合温针灸进行治疗,对比三组患者血脂指标、性激素水平、窦卵泡计数(Antral Follicle Count,AFC)及临床疗效。结果:治疗前,三组患者促黄体生成素(Luteinizing Hormone,LH)、促卵泡生成素(Follicle-stimulating Hormone,FSH)、雌二醇(Estradiol,E_(2))、AFC水平对比无明显差异(P>0.05);治疗3个月及治疗6个月后,针药组患者LH、FSH明显低于中药组与西药组,E_(2)、AFC明显高于中药组与西药组(Pow Density Lipoprotein Cholesterol,LDL-C)、高密度脂蛋白胆固醇(High Density Lipoprotein Cholesterol,HDL-C)、三酰甘油(Triglyceride,TG)、总胆固醇(Total Cholesterol,TC)水平的差异无统计学意义(P>0.05);治疗3个月后及治疗6个月后,针药组LDL-C、HDL-C、TG及TC水平均明显低于中药组与西药组(P<0.05)。针药组总有效率明显高于中药组与西药组(P<0.05)。结论:采用二仙汤与温针灸联合治疗肾虚肝郁型卵巢早衰临床疗效显著,能够明显改善患者的性激素水平与血脂水平,应用价值较高。

关键词：二仙汤温针灸肾虚肝郁型卵巢早衰临床研究

Efficacy of cap-assisted endoscopy for routine examining the ampulla of Vater

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World Journal of Gastroenterology 2013年第13期19卷 2037-2043页

作者： Young Rak Choi Joung-Ho han Young Shim Cho Hye-Suk han Hee Bok Chae Seon mee Park Sei Jin Youn Department of Internal medicine College of MedicineChungbuk National University

AIM: To determine the efficacy of a cap-assisted endoscopy (CAE) to completely visualize the ampulla of Vater (AV) in patients failed by conventional endoscopy. meTHoDS: A prospective study was conducted on 120 patients > 20 years of ages who visited the Health Promotion Center of Chungbuk National University Hospital for conscious sedation esophagogastroduodenoscopy (EGD) as a screening test from July to october, 2011. First, forward-viewing endoscopy was performed with reasonable effort using a push and pull method. We considered complete visualization of the AV when we could observe the entire AV including the orifice clearly, and reported the observation as complete or incomplete (partial or not found at all). Second, in cases of complete failure of the observation, an additional AV examination was conducted by attaching a short cap (D-201-10704, olympus medical Systems, Tokyo, Japan) to the tip of a forward-viewing endoscope. Third, if the second method failed, we replaced the short cap with a long cap (MH-593, olympus medical Systems) and performed a re-examination of the AV. RESULTS: Conventional endoscopy achieved complete visualization of the AV in 97 of the 120 patients (80.8%) but was not achieved in 23 patients (19.2%). Age (mean ± SD) and gender [male (%)] were not significantly different between the complete observation and the incomplete observation groups. Additional short CAE was performed in patients in whom we could not completely visualize the AV. This group included 13 patients (10.9%) with partial observation of the AV and 10 (8.3%) in which the AV was not found. Short CAE permitted a complete observation of the AV in 21 of the 23 patients (91.3%). Patients in whom visualization of the AV failed with short CAE had satisfactory outcomes by replacing the short cap with a long cap. The additional time for CAE took an average of 141 ± 88 s. There were no complications and no significant mucosal trauma. CoNCLUSIoN: CAE is safe to use as a salvage me

关键词： Ampulla of Vater Conventional endoscopy Cap-assisted endoscopy Screening test Complete observation

H3和IDH野生型弥漫性儿童型高级别胶质瘤6例临床病理分析

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临床与实验病理学杂志 2024年第5期40卷 484-489页

作者：王瑞芬管雯斌严敏骅琚璐韩蕙如王立峰上海交通大学医学院附属新华医院病理科上海200092

目的探讨中枢神经系统H3和IDH野生型弥漫性儿童型高级别胶质瘤的临床病理学及分子特征。方法收集上海交通大学医学院附属新华医院病理科诊断的6例H3和IDH野生型弥漫性儿童型高级别胶质瘤的临床病理资料,采用免疫组化(全自动免疫组化染色... 详细信息

目的探讨中枢神经系统H3和IDH野生型弥漫性儿童型高级别胶质瘤的临床病理学及分子特征。方法收集上海交通大学医学院附属新华医院病理科诊断的6例H3和IDH野生型弥漫性儿童型高级别胶质瘤的临床病理资料,采用免疫组化(全自动免疫组化染色仪)检测GFAP、olig2、Syn、NeuN、IDH1、H3K27M等蛋白的表达,FISH法检测EGFR、MYCN基因扩增,Sanger测序检测IDH、H3F3A、TERT基因突变,并复习相关文献。结果本组6例患者年龄范围5~11岁,中位年龄7.5岁。其中男性2例,女性4例,男女比1∶2。临床症状表现为肢体乏力、偏瘫、呕吐、抽搐、视物模糊等。肿瘤发生部位:5例位于幕上,1例位于幕下脑干和小脑。组织学形态:3例表现为高级别胶质瘤形态学特征,其中2例伴有瘤巨细胞;2例表现为胚胎性肿瘤样特征,1例同时具有高级别胶质瘤及胚胎性肿瘤样形态学特点。5例伴有微血管增生和(或)坏死;1例间质黏液变/微囊形成。免疫表型:肿瘤细胞GFAP(6/6)和olig2(6/6)部分或局灶阳性,Syn(3/6)和NeuN(1/6)局灶或散在阳性,IDH1、H3K27M、H3G34V和H3G34R均阴性,ATRX、H3K27me3、INI1、BRG1均弥漫阳性(6/6)。p53阳性5%~95%不等,Ki67增殖指数40%~90%。分子检测示6例均为IDH1/2和H3F3A野生型;2例MYCN扩增;2例EGFR扩增伴多倍体;1例同时伴有EGFR扩增和MYCN扩增;1例PDGFRA扩增。治疗及随访情况,术后放疗和(或)替莫唑胺化疗;3例于术后1~5个月死亡;2例存活,随访截至2024年1月,分别随访4个月和7个月;1例失访。结论H3和IDH野生型弥漫性儿童型高级别胶质瘤是一种高度恶性肿瘤,组织学表现为胶质母细胞瘤样或胚胎性肿瘤样特征,根据分子遗传学特征分为RTK1、RTK2、MYCN三种分子亚型,其中MYCN亚型预后最差。诊断时应注意与其他儿童型或成人型高级别胶质瘤及胚胎性肿瘤鉴别。

关键词：弥漫性儿童型高级别胶质瘤 H3野生型 IDH野生型鉴别诊断

Electrochemical reduction of Co_2 to Co using graphene oxide/carbon nanotube electrode in ionic liquid/acetonitrile system

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Science China Chemistry 2016年第5期59卷 551-556页

作者： Qinggong Zhu Jun Ma Xinchen Kang Xiaofu Sun Jiayin Hu Guanying Yang Buxing han Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences

Electrochemical reduction of Co_2 to Co is an interesting topic. In this work, we prepared metal-free electrodes by depositing graphene oxide(Go), multi-walled carbon nanotube(MWCNT), and Go/MWCNT composites on carbon paper(CP) using electrophoretic deposition(EPD) method. The electrodes were characterized by different methods, such as X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS). The electrochemical reduction of Co_2 to Co was conducted on the electrodes in 1-butyl-3-methylimidazolium tetrafluoroborate([Bmim]BF4)/acetonitrile(me CN) electrolyte, and the composition of the electrolyte influenced the reaction significantly. It was demonstrated that Go/MWCNT-CP electrode was very effective for the reaction in IL(90 wt%)/me CN binary mixture, the Faradaic efficiency of Co and current density were even higher than those on Au and Ag electrodes in the same electrolyte.

关键词： carbon dioxide electrochemical reduction carbon monoxide electrophoretic deposition carbon based materials

Application of ultrasonic vibration to shape-casting based on resonance vibration analysis

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China Foundry 2023年第4期20卷 339-346页

作者： Zong-hang han Zhi-ming Wang Zhi-ping Sun Bing-rong Zhang Wei-feng Rao School of me.hanical Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China Jinan Shengquan Group Jinan 250204China

The application of ultrasonic vibration during the casting process has been proven to refine the microstructure and enhance the properties of the *** using the direct inserting method,wherein the ultrasonic horn is inserted directly into the melt,ultrasonic treatment can be utilized in the semi-continuous casting process to produce aluminum ingots with simple ***,due to the attenuation of ultrasound,it is challenging to apply the direct inserting method in the die casting process to produce complex ***,in this study,the impact of ultrasonic vibration on the microstructure of a gravity die-cast AlSi9Cu3end cap was investigated by applying ultrasonic vibration on the core(indirect method).It is found that the effect of ultrasonic vibration relies greatly on the resonance mode of the *** of ultrasonic vibration schemes mainly depends on the core structure,and only a strong vibration can significantly refine the microstructure of the *** castings with complex structures,an elaborated ultrasonic vibration design is necessary to refine the microstructure of the specified *** addition,strong vibration applied on the feeding channel can promote the feeding ability of casting by breaking the dendrites during solidification,and consequently reduce the shrinkage porosity.

关键词： resonance mode ultrasonic vibration feeding channel aluminum alloy casting

Comparative Study on oxidative Desulfurization of FCC Gasoline by Ce^(4+) Compound and H_2o_2

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China Petroleum Processing & Petrochemical Technology 2011年第4期13卷 23-28页

作者： Li Haixia Xiao Lingmei Ma Jie han Xiaogang Li Jian Department of Chemistry Capital Normal University Beijing 100048 SINoPEC Research Institute of Petroleum Processing Beijing 100083

This article describes two kinds of model oil samples made of a benzothiophene/octane mixture and a 2-me- thylthiophene/octane mixture. Furthermore, this paper investigates the oxidative desulfurization selectivity and reaction efficiency when Ce4+ compound and H2o2 having identical electron equivalent weight were used as oxidants. The test re- sults showed that the two kinds of oxidants were more effective to remove benzothiophene in the model oil samples. For oxidative desulfurization of 2-methylthiophene, Ce4+ compound was obviously superior than H2o2. This paper by means of quantum chemistry analyses elaborates the complex formed between Ce4+ species and 2-methylthiophene and FT-IR spec- trograms of model oil samples before and after oxidation by Ce4+ compound and H2o2, respectively. The results demonstrat- ed that Ce4+ compound could remove sulfur compounds not only through oxidation reaction but also through complexation reaction.

关键词： FCC gasoline benzothiophene 2-methylthiophene 4+ Ce H2o2