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Study on the Ternary Heteropolyacids in the Systems of P-Mo-W and As-Mo-W as well as their Application in the Spectrophotometric Determination of Low Tungsten

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Rare Metals 1990年第1期10卷 10-15页

作者： Chen, Huaxu Shao, Guangdi qi, xiaoling Univ of Science and Technology China

The colored associated compounds of phosphomolybdotungstate and arsenomolybdotungstate with crystal violet are introduced. Their main characters have been studied. These two associated compounds may be used to determine low tungsten with fairly high sensitivity and selectivity. Their strong point is that the interference of molybdenum can be overcome. In the presence of polyvinyl alcohol, tungsten can be determined directly in the aqueous solution.

关键词： Polyvinyl Alcohol Solutions Solutions Coloring Spectrophotometers Applications Spectroscopy, Absorption Spectrum Analysis Tungsten Compounds Spectroscopic Analysis

六味能消制剂中非法成分土大黄苷检测方法的建立

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西北药学杂志 2024年第1期39卷 32-43页

作者：祁晓玲张炜杨凤梅青海省药品检验检测院青海省中藏药现代化研究重点实验室国家药品监督管理局中药(藏药)质量控制重点实验室西宁810016

目的建立六味能消丸(胶囊、片)中非法成分土大黄苷的检测方法。方法用薄层色谱法及高效液相色谱-二极管阵列检测器法初步筛查样品中非法成分土大黄苷,并用高效液相色谱-串联质谱法对土大黄苷检测阳性结果进一步进行确证。结果在101批次... 详细信息

目的建立六味能消丸(胶囊、片)中非法成分土大黄苷的检测方法。方法用薄层色谱法及高效液相色谱-二极管阵列检测器法初步筛查样品中非法成分土大黄苷,并用高效液相色谱-串联质谱法对土大黄苷检测阳性结果进一步进行确证。结果在101批次六味能消丸(胶囊、片)中的12批次六味能消丸中检出土大黄苷。结论所建立的方法专属性强,可有效筛查六味能消制剂中是否含有土大黄苷。

关键词：六味能消丸(胶囊、片) 大黄土大黄苷薄层色谱法高效液相色谱法高效液相色谱法-串联质谱法

Research progress and developing trends on microorganisms of Xinjiang specific environments

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Journal of Arid Land 2010年第1期2卷 51-56页

作者： Pan, HuiXia Cheng, ZhengMing Zhang, YuanMing Mu, ShuYong qi, xiaoling Chinese Acad Sci Key Lab Biogeog & Bioresource Arid Land Xinjiang Inst Ecol & Geog Urumqi 830011 Peoples R China

Microorganisms and its metabolic types are diverse in Xinjiang because of those extreme/special environments of drought, high or low temperature, saline and alkaline, oligotrophy. This article reviewed the research progress and achievements of various microbial resources (bacteria, fungi and actinomycete) in the special environments from the point of its ecology, development and application. Meanwhile, the development trend, protection and sustainable utilization of the microorganism resources were discussed.

关键词： Xinjiang microorganism special environment research progress trend development

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非侵入式翼伞组提带张力测量传感器的设计

航空科学技术 2024年第3期35卷 87-93页

作者：齐贺轩郭瑞鹏李前奇赵敏姚敏卢章树戚晓玲南京航空航天大学江苏南京211106 航空工业航宇救生装备有限公司湖北襄阳441100

实时掌握并安全稳定地测量翼伞组提带张力大小,探究组提带张力与翼伞姿态的反馈关系,对翼伞研究非常重要。为解决目前翼伞组提带张力传感器量程小、结构复杂,以及破坏组提带结构等问题,本文设计了一种体积小、易于安装和拆卸、对翼伞组... 详细信息

实时掌握并安全稳定地测量翼伞组提带张力大小,探究组提带张力与翼伞姿态的反馈关系,对翼伞研究非常重要。为解决目前翼伞组提带张力传感器量程小、结构复杂,以及破坏组提带结构等问题,本文设计了一种体积小、易于安装和拆卸、对翼伞组提带结构无破坏的双臂梁旁压式大量程张力传感器。本文使用SolidWorks对传感器弹性体进行建模,并使用ANSYS有限元分析软件对其进行静力学分析与模态仿真分析,通过分析结果对传感器弹性体模型的结构进行调整优化,从理论上证明传感器弹性体结构设计的合理性。设计了以STM32为主控芯片的信号采集系统,完成张力信号的采集、数据处理和数据存储等功能。使用拉力机对设计的翼伞组提带张力传感器实物进行多次测试,试验结果表明所设计的张力传感器具有高结构强度、高精度、良好的线性度以及重复性,满足对翼伞组提带张力的无损测量需求。

关键词：翼伞组提带张力传感器有限元分析模态分析信号采集系统

Improving dryland maize productivity and water efficiency with heterotrophic ammonia-oxidizing bacteria via nitrification and cytokinin activity

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The Crop Journal 2024年第3期12卷 880-887页

作者： xiaoling Wang Jiawei Cao Runhong Sun Wei Liu Lin qi Peng Song Shenjiao Yang College of Agronomy Henan University of Science and TechnologyLuoyang 471003HenanChina Institute of Plant Protection Research Henan Academy of Agricultural SciencesZhengzhou 450099HenanChina Farmland Irrigation Research Institute Chinese Academy of Agricultural SciencesXinxiang 453000HenanChina

A two-year field experiment conducted under dryland conditions in semi-humid and drought-prone regions of China aimed to assess the effect of ammonia-oxidizing bacterial on maize water use efficiency and yield.A heterotrophic ammonia-oxidizing bacteria(HAOB)strain S2_8_1 was *** treatments were applied:(1)no irrigation+HAOB strain(DI),(2)no irrigation+blank culture medium(DM),(3)no irrigation control(DCK),(4)irrigation+HAOB(WI),(5)irrigation+blank culture medium(WM),and(6)irrigation control(WCK).Results revealed that HAOB treatment increased maize growth,yield,and water use efficiency over controls,regardless of whether the year was wet or *** improvement was attributed to the accelerated nitrification in the rhizosphere soil due to HAOB inoculation,which subsequently led to increased levels of leaf ***,these findings suggest that HAOB inoculation holds promise as a strategy to boost water use efficiency and maize productivity in dryland agriculture.

关键词： Heterotrophic ammonia-oxidizing bacteria Rhizosphere soil nitrification Cytokinin Maize Dryland agriculture

Twin-SSB signal reception without optical SSB filters based on self-coherent detection

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Optoelectronics Letters 2024年第10期20卷 584-591页

作者： ZHANG xiaoling Key Laboratory of Aviation Electronic Information Systems Southwest China Institute of Electronic Technology

Dater center interconnection has stimulated the development of short-reach optical communication transmission. To increase the capacity of the single sideband(SSB) system with direct-detection(DD), the twin-SSB system can double the system capacity without an extra optical modulator. Recently, the Stokes vector receiver(SVR) bridges the coherent detection and DD. A carrier can be sent along with the signal so that the SVR can utilize the reference carrier to conduct self-coherent detection and realize a linear complex optical detection, which is similar to the coherent receiver. In this paper, we propose a twin-SSB reception without optical SSB filters based on self-coherent detection. The proposed scheme greatly reduces the implementation complexity and has higher spectral efficiency(SE) compared with the traditional twin-SSB signal detection where two narrow-band optical filters and guard band are used for SSB signal extracting and inter crosstalk suppression. Meanwhile, the proposed twin-SSB signal detection with self-coherent detection also helps to relax the receiver digital signal processing(DSP), since the self-coherent detection reduces the inter crosstalk between the twin-SSB. The twin-SSB reception with self-coherent detection scheme makes it suitable for future high-speed short and medium-reach applications, such as the data center interconnect and metro area network.

关键词： A

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Centennial Analysis of Human Activity Intensity and Associated Historical Events in Heilongjiang River Sino-Russo Watershed

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Chinese Geographical Science 2024年第2期34卷 280-293页

作者： SONG Chaoxue LI xiaoling HE Hongshi Michael SUNDE School of Geographical Sciences Northeast Normal UniversityChangchun 130024China School of Natural Resources University of MissouriColumbia 65211USA

Human activities in a transborder watershed are complex under the influence of domestic policies,international relations,and global *** the forces driving human activity change is important for the development of transborder *** this study,we used global historical land cover data,the hemeroby index model,and synthesized major historical events to analyze how human activity intensity changed in the Heilongjiang River(Amur River in Russia)watershed(HLRW).The results showed that there was a strong spatial heterogeneity in the variation of human activity intensity in the HLRW over the past century(1900-2016).On the Chinese side,the human activity intensity change shifted from the plain areas for agricultural reclamation to the mountainous areas for timber *** the Russian side,human activity intensity changes mostly concentrated along the Trans-Siberian Railway and the Baikal-Amur *** variation of human activity intensity tended to respond to regional events while regionalized variation tends to reflect national policy change or broad international *** similarities and differences between China and Russia in policies and positions in international events resulted in synchronous and asynchronous changes in human activity ***,policy shifts were often confined by the natural features of the *** results reveal the historical origins and fundamental connotations of watershed development and contribute to formulating regional management policies that coordinate population,eco-nomic,social,and environmental activities.

关键词： human activity intensity changes hemeroby index centennial scale Heilongjiang River(Amur River in Russia)watershed China Russia

基于SURF特征点的包装空间双目视觉定位研究

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包装与食品机械 2022年第2期40卷 82-86,94页

作者：祁晓玲山西铁道职业技术学院太原030024

为便于多自由度的机械臂识别抓取特定包装,对包装外边缘轮廓精确定位,强化机械臂作业系统对包装的外边缘轮廓抓取精度与视觉特征识别。基于双目机器视觉中的SURF特征点的定位,提高检测系统的图像信息收集精度,确定复杂环境下的目标包装... 详细信息

为便于多自由度的机械臂识别抓取特定包装,对包装外边缘轮廓精确定位,强化机械臂作业系统对包装的外边缘轮廓抓取精度与视觉特征识别。基于双目机器视觉中的SURF特征点的定位,提高检测系统的图像信息收集精度,确定复杂环境下的目标包装物边缘标定核心识别定位要点。在传统单眼视觉的基础上,进行双目视觉SURF特征点的应用建设分析。以实际复杂环境下的瓶类包装为例,论证该类包装外边缘的特征提取方法,进行SURF局部特征提取结果对照试验。结果表明,基于双目视觉的SURF特征点以及优化措施,较单目识别定位CDF值降低了约46%,为机械臂在视觉复杂环境下的目标包装物标定方式建立,提供更加精确的识别方法,满足复杂环境下目标包装物识别作业的有效定位要求。

关键词：机器视觉目标包装物 SURF特征点双目视觉

Aldehyde oxidase mediated enantioselective metabolic health risk of dinotefuran

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Science China Chemistry 2024年第6期67卷 2079-2091页

作者： Liwei Xu Xinxin Xu Hua Kuang Chuanlai Xu xiaoling Wu State Key Laboratory of Food Science and Resources Jiangnan UniversityWuxi214122China International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology Jiangnan UniversityWuxi214122China Collaborative Innovation center of Food Safety and Quality Control in Jiangsu Province Jiangnan UniversityWuxi214122China

Chiral pollutants often pose significant differential environmental health *** this study,the biotransformation of chiral dinotefuran(DIN)and its enantioselective metabolic toxicity mechanisms have been systemically ***,reversedphase chromatography-high resolution mass spectrometry was developed to quantify the content of DIN R/S chiral enantiomer with pg level sensitivity,revealing a lower elimination rate constant(K_(e))of S-DIN(0.730 h^(-1))than R-DIN(0.746 h^(-1)).Secondly,the interaction mechanism between DIN metabolism and important endogenous bioactive molecules,such as aldehyde oxidase(AOX)and neurotransmitters,was *** DIN nitro-group was converted into a guanidine group by the reducing site of nearby flavin adenine dinucleotide(FAD)in AOX with the preferred higher affinity of ***,the endogenous tryptophan(Trp)aldehyde metabolic intermediate,5-hydroxyindoleacetaldehyde(5-HIAL),provides a persistent electron donor for DIN reduction via the oxidation-catalyzed site in AOX,resulting in remarkable up-regulation of monoamine neurotransmitters such as serotonin and ***,the higher level of neurotransmitters further mediated dysregulation of oxylipin homeostasis via the serotonergic pathway,where S-DIN exhibited more pronounced liver lipid damage and environmental health risk with the accumulated lipid biomarkers,oxidized triglyceride(OxTG)and oxidized sphingomyelin(OxSM).This study elucidates the AOX-mediated enantioselectivity metabolic pathway of DIN,providing a new analytical method for chiral pollutants and paves the way for their health risk assessments.

关键词： neonicotinoid dinotefuran enantiomer aldehyde oxidase metabolomics health risk