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Case report of a patient with suspected COVID-19 with depression and fever in an epidemic stress environment

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General Psychiatry 2020年第3期33卷 191-193页

作者： Rui Fu yueqin zhang Department of Mental lness and Insomnia Jingmen Stomatological Hospital(Jingmen Mental Health Center)JingmenHubei ProvinceChina Department of Anorectal Surgery Second People's Hospital of JingmenJingmenChina

During the COVID-19 pandemic,the number of suspected cases,confirmed cases and those who passed away from the virus has been reported in major media and the internet,and has caused a high degree of *** addition,people's outdoor activities have been limited,making it more difficult to find outlets for releasing *** this situation,some people began to experience emotions of anxiety and *** article reports a case of depression with fever caused by the stress tension of the *** patient was highly suspected to have contracted *** reported patient,who had a history of depression and had been to Wuhan to attend an exam,showed obvious pre-exam anxiety under the epidemic situation,which gradually increased the patient's pressure and then caused some adverse symptoms,such as insomnia,anxiety,sweating and a reoccurrent *** community authorities paid close attention to him and later sent him to a general hospital in Jingmen for quarantine and treatment,as he was suspected of having *** being hospitalised for half a month,he was ruled out from having‘COVID-19'and was cured of depression and discharged from the *** this case,we can realise that,under the situation of the epidemic,people are easily prone to insomnia,anxiety and even *** clinicians in general hospitals,especially when encountering large emergencies,we must carefully inquire about the patient's medical history while strengthening our understanding of psychiatric knowledge to improve the recognition rate for depression.

关键词： patient stress suspected

Robust Segmentation Method for Noisy Images Based on an Unsupervised Denosing Filter

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Tsinghua Science and Technology 2021年第5期26卷 736-748页

作者： Ling zhang Jianchao Liu Fangxing Shang Gang Li Juming Zhao yueqin zhang College of Software Taiyuan University of TechnologyTaiyuan 030024China College of Information and Computer Taiyuan University of TechnologyTaiyuan 030024China Information Technology Department Shanxi Tizones Technology Co.LtdTaiyuan 030024China

Level-set-based image segmentation has been widely used in unsupervised segmentation *** have recently alleviated the influence of image noise on segmentation results by introducing global or local statistics into existing *** existing methods are based on the assumption that the distribution of image noise is known or ***,real-time images do not meet this *** bridge this gap,we propose a novel level-set-based segmentation method with an unsupervised denoising ***,a denoising filter is acquired under the unsupervised learning ***,the denoising filter is integrated into the level-set framework to separate noise from the noisy image ***,the level-set energy function is minimized to acquire segmentation *** experiments demonstrate the robustness and effectiveness of the proposed method when applied to noisy images.

关键词： image segmentation noisy image level set autoencoder

Conveyor-Belt Detection of Conditional Deep Convolutional Generative Adversarial Network

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Computers, Materials & Continua 2021年第11期69卷 2671-2685页

作者： Xiaoli Hao Xiaojuan Meng yueqin zhang JinDong Xue Jinyue Xia College of Information and Computer Taiyuan University of TechnologyJinzhongShanxi030600China State Grid Taiyuan Power Supply Company TaiyuanShanxi030012China International Business Machines Corporation(IBM) NYUSA

In underground mining,the belt is a critical component,as its state directly affects the safe and stable operation of the *** of the existing non-contact detection methods based on machine vision can only detect a single type of damage and they require pre-processing *** tends to cause a large amount of calculation and low detection *** solve these problems,in the work described in this paper a belt tear detection method based on a multi-class conditional deep convolutional generative adversarial network(CDCGAN)was *** the traditional DCGAN,the image generated by the generator has a certain degree of ***,a small number of labeled belt images are taken as conditions and added them to the generator and discriminator,so the generator can generate images with the characteristics of belt damage under the aforementioned ***,because the discriminator cannot identify multiple types of damage,the multi-class softmax function is used as the output function of the discriminator to output a vector of class probabilities,and it can accurately classify cracks,scratches,and *** avoid the features learned incompletely,skiplayer connection is adopted in the generator and *** not only can minimize the loss of features,but also improves the convergence *** with other algorithms,experimental results show that the loss value of the generator and discriminator is the ***,its convergence speed is faster,and the mean average precision of the proposed algorithm is up to 96.2%,which is at least 6%higher than that of other algorithms.

关键词： Multi-class detection conditional deep convolution generative adversarial network conveyor belt tear skip-layer connection

Pilot Test of Preparing 2-Alkylanthraquinone Using Alkylation-Oxidation Technology

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China Petroleum Processing & Petrochemical Technology 2024年第1期26卷 88-97页

作者： Zheng Bo Qian Jianguo Shi Peng Pan Zhiyong Qie Siyuan zhang yueqin Fei Jianqi Qiao Liang Zong Baoning SINOPEC Research Institute of Petroleum Processing Co. LtdBeijing 100083 Shijiazhuang United Petrochemical Co. LtdShijiazhuang 050011

To expedite the development of industrial technology for producing 2-alkylanthraquinone,a novel pilot test of alkylation-oxidation technology was *** process mainly included anthracene alkylation,separation of anthracene and 2-alkylanthracene,oxidation of 2-alkylanthracene,and product *** alkylation conditions yielded a 91.1%conversion of anthracene and a 71.73%selectivity for *** address the separation problem of anthracene and 2-alkylanthracene,solvent-assisted distillation technology was developed,resulting in a 98.9%purity of 2-alkylanthracene and a 91.82%separation *** the molar ratio of H2O_(2) to 2-alkylanthracene was 7:1,a 98.96%conversion of 2-alkylanthracene and a 99.94%selectivity for 2-alkylanthraquinone were achieved.A novel composition of 2-alkylanthraquinone,including 2-tert-butylanthraquinone,2-tert-amylanthraquinone,and 2-hexylanthraquinone,was *** composition could be effectively separated and purified through a combination of crystallization and washing *** elemental composition of the product met the existing standards,and its hydrogenation performance closely matched that of commercially available 2-tert-amylanthraquinone products.

关键词： anthracene 2-alkylanthracene 2-alkylanthraquinone alkylation oxidation hydrogen peroxide

A sound ray tracing algorithm in three-dimensional heterogeneous media based on wavefront traveltimes interpolation

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Chinese Journal of Acoustics 2008年第3期27卷 261-271页

作者： HUANG yueqin zhang Jianzhong School of Information Science and Technology Xiamen University Xiamen 361005

A kind of three-dimensional（3-D） sound ray tracing algorithm in heterogeneous media is studied. This algorithm includes two steps： the first step computes the wavefront traveltimes forward; the second step traces the sound rays backward. In the first step, the computation of wavefront traveltimes at discrete grid points from the sound source, was found on Eikonal equation solutions and carried out by GMM （Group marching method） wavefront marching method based on level set. In the second step, sound ray tracing was proceeded gradually from the receiver to each cell towards the sound source, with wavefront traveltimes computed in the first step. Time values on arbitrary positions in each cuboid cell can be expressed by linear interpolation of wavefront traveltimes at the same cell＇s grid points. Thus, an algorithm of 3-D sound ray tracing in heterogeneous media is put forward. The simulation results indicate that this method can improve both the accuracy and the efficiency of 3-D sound ray tracing greatly.

关键词： ray tracing marching method linear interpolation simulation results Eikonal equation level set

气相色谱-氮化学发光检测仪在石油炼制分析中的应用

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石油炼制与化工 2021年第5期52卷 86-91页

作者：张月琴中国石化石油化工科学研究院北京100083

气相色谱-氮化学发光检测法(GC-NCD)由于其对样品中氮化物等物质的量响应的特点,逐步成为使用最为广泛的测定石油炼制产物中氮化物形态的分析手段之一。GC-NCD方法对氮化物的定性主要是标样定性或者分离富集后色谱-质谱联用(GC-MS)对照... 详细信息

气相色谱-氮化学发光检测法(GC-NCD)由于其对样品中氮化物等物质的量响应的特点,逐步成为使用最为广泛的测定石油炼制产物中氮化物形态的分析手段之一。GC-NCD方法对氮化物的定性主要是标样定性或者分离富集后色谱-质谱联用(GC-MS)对照定性,外标法定量。对GC-NCD法在石油炼制过程中的实际应用工作进行了梳理,将其适合分析的气体、汽油、柴油以及含氮添加剂等主要应用进行了总结。

关键词：气相色谱-氮化学发光检测仪氮化物汽油柴油气体

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催化裂化柴油中含氮化合物类型分布

石油炼制与化工 2013年第5期44卷 87-91页

作者：张月琴中国石化石油化工科学研究院北京100083

采用中性硅胶柱分离、富集催化裂化柴油中的含氮化合物,进一步用酸改性硅胶柱将含氮化合物分离成碱性含氮化合物和中性含氮化合物,利用GC-MS进行定性分析,结合含氮化合物的GC保留特性和沸点分布规律,确定催化裂化柴油中含氮化合物的类型... 详细信息

采用中性硅胶柱分离、富集催化裂化柴油中的含氮化合物,进一步用酸改性硅胶柱将含氮化合物分离成碱性含氮化合物和中性含氮化合物,利用GC-MS进行定性分析,结合含氮化合物的GC保留特性和沸点分布规律,确定催化裂化柴油中含氮化合物的类型,利用GC-NCD进行定量分析。结果表明:催化裂化柴油中的含氮化合物主要是中性含氮化合物和少量碱性含氮化合物;中性含氮化合物占90%以上,主要是吲哚类和咔唑类含氮化合物,不同来源催化裂化柴油中中性含氮化合物的类型分布并不相同;碱性含氮化合物仅占10%左右,主要是苯胺类、喹啉类和苯并喹啉类含氮化合物。

关键词：含氮化合物催化裂化柴油 GC-MS GC-NCD

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直馏柴油和焦化柴油中含氮化合物类型分布

石油炼制与化工 2013年第1期44卷 41-45页

作者：张月琴中国石化石油化工科学研究院北京100083

采用中性硅胶柱分离、富集直馏柴油和焦化柴油中的含氮化合物,进一步用酸改性硅胶柱将含氮化合物分离成碱性含氮化合物和中性含氮化合物,利用GC-MS定性,结合含氮化合物的GC保留特性和沸点分布规律,确定直馏柴油和焦化柴油中合氮化合物... 详细信息

采用中性硅胶柱分离、富集直馏柴油和焦化柴油中的含氮化合物,进一步用酸改性硅胶柱将含氮化合物分离成碱性含氮化合物和中性含氮化合物,利用GC-MS定性,结合含氮化合物的GC保留特性和沸点分布规律,确定直馏柴油和焦化柴油中合氮化合物的类型。结果表明,直馏柴油中中性含氮化合物占总含氮化合物的质量分数在70%以上,主要是苯并咔唑类含氮化合物;焦化柴油中含氮化合物包括吡啶类、苯胺类、吲哚类、喹啉类和咔唑类等含氮化合物,其中中性含氮化合物的含量比碱性含氮化合物稍高,占总含氮化合物的质量分数在50%以上。

关键词：含氮化合物直馏柴油焦化柴油 GC—NCD

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汽油中氮化物的定性定量方法研究与应用

石油炼制与化工 2016年第4期47卷 91-95页

作者：张月琴中国石化石油化工科学研究院北京100083

采用预富集技术提取汽油中的氮化物,结合气相色谱-质谱(GC-MS)定性,对照标准样品的色谱保留时间确定汽油中氮化物的形态。以气相色谱-氮化学发光检测法(GC-NCD)为分析手段,对汽油中氮化物进行定量分析,单组分氮的检出限为0.6mg/L。用该... 详细信息

采用预富集技术提取汽油中的氮化物,结合气相色谱-质谱(GC-MS)定性,对照标准样品的色谱保留时间确定汽油中氮化物的形态。以气相色谱-氮化学发光检测法(GC-NCD)为分析手段,对汽油中氮化物进行定量分析,单组分氮的检出限为0.6mg/L。用该方法分析得出催化裂化汽油中氮化物的类型主要包括腈类、吡啶类、吡咯类、苯胺类。对市售车用汽油中氮化物的形态进行识别并定量分析,大部分常规车用汽油样品中总氮含量小于60mg/L,其中几个车用汽油样品中总氮含量大于100mg/L。

关键词：车用汽油氮化物气相色谱-氮化学发光检测法气相色谱-质谱