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Effects of mixed aerosol on the path loss of NLOS UV communication system

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Optoelectronics Letters 2024年第9期20卷 549-559页

作者： MA Yuzhao zhou jingyi Tianjin Key Laboratory for Advanced Signal Processing Civil Aviation University of ChinaTianjin 300300China College of Electronic Information and Automation Civil Aviation University of ChinaTianjin 300300China

Performance of non-line-of-sight(NLOS)ultraviolet(UV)communication is closely related with the communication range,system geometry and the atmosphere aerosol *** this paper,we investigate the path loss of the NLOS UV ... 详细信息

关键词： communication properties. NLOS

Adiabatic shear banding of hot-extruded tungsten heavy alloy under cryogenic temperature

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Rare Metals 2012年第1期31卷 17-21页

作者： Liu, Jinxu Yang, Jia zhou, jingyi Li, Shukui Guo, Wenqi School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China

The effect of cryogenic temperature on adiabatic shear banding (ASBing) of tungsten heavy alloy (WHA) processed by hot-hydrostatic ex-trusion was *** show that,when the initial temperature is decreased,the dynamic flow stress,the critical failure time,and the dynamic failure energy of specimens show an increasing tendency,while the susceptibility to ASB of WHA shows a decreasing tendency,which is characterized by decreased shear strain and increased width of shear *** analysis shows that the number of mi-crocracks within ASB exhibits an increasing tendency with decreased initial temperature,and the dynamic recrystallization (DRX) process within ASB is evidently suppressed at the lower *** a result of the lower temperature,the motion and rearrangement of disloca-tion are effectively suppressed,which is mainly responsible for the incomplete DRX process within ASB and decreases susceptibility to ASB.

关键词： adiabatic shear bands dynamic behaviors tungsten heavy alloys microstructure evolution dynamic recrystallization

Meltblown fabric vs nanofiber membrane, which is better for fabricating personal protective equipments

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Chinese Journal of Chemical Engineering 2021年第8期34卷 1-9页

作者： Junwei Wu Hongjia zhou jingyi zhou Xiao Zhu Bowen Zhang Shasha Feng Zhaoxiang Zhong Lingxue Kong Weihong Xing State Key Laboratory of Materials-Oriented Chemical Engineering National Engineering Research Center for Special Separation MembraneNanjing Tech UniversityNanjing 210009China Jiangsu Jiulang High-Tech Co. LtdNanjing 210009China Department of Material and Chemical Engineering Soochow UniversitySuzhou 215006China Institute for Frontier Materials Deakin UniversityGeelongVictoria 3216Australia

The coronavirus disease 2019(COVID-19)pandemic has led to a great demand on the personal protection products such as reusable *** a key raw material for masks,meltblown fabrics play an important role in rejection of ***,the electrostatic dominated aerosol rejection mechanism of meltblown fabrics prevents the mask from maintaining the desired protective effect after the static charge ***,novel reusable masks with high aerosols rejection efficiency were fabricated by the introduction of spider-web bionic nanofiber membrane(nano cobweb-biomimetic membrane).The reuse stability of meltblown and nanofiber membrane mask was separately evaluated by infiltrating water,75%alcohol solution,and exposing under ultraviolet(UV)*** the water immersion test,the filtration efficiency of meltblown mask was decreased to about 79%,while the nanofiber membrane was maintained at 99%.The same phenomenon could be observed after the 75%alcohol treatment,a high filtration efficiency of 99%was maintained in nanofiber membrane,but obvious negative effect was observed in meltblown mask,which decreased to about 50%.In addition,after long-term expose under UV light,no filtration efficiency decrease was observed in nanofiber membrane,which provide a suitable way to disinfect the potential carried *** work successfully achieved the daily disinfection and reuse of masks,which effectively alleviate the shortage of masks during this special period.

关键词： Filtration efficiency Meltblown fabrics Nano cobweb-biomimetic membrane Reusable mask

Prevention of burn-on defect on surface of hydroturbine blade casting of ultra-low-carbon refining stainless steel

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China Foundry 2008年第3期5卷 190-193页

作者： Li Ling Xie Huasheng Huang Danzhong Li Hankun Tan Rui zhou jingyi Shenyang Research Institute of Foundry Shenyang 110022 China Shenyang University of Technology Shenyang 110023 China

The burn-on sand is common surface defect encountered in CO2 -cured silicate-bonded sand casting of hydroturbine blade of ultra-low-carbon martensitic stainless steel,its feature,causes and prevention measures are presented in this *** showed that the burn-on defect is caused by oxidization of chromium in the molten steel at high temperature and can be effectively eliminated by using chromium-corundum coating.

关键词： burn-on defect ultra-low-carbon martensitic stainless steel chromium-corundum coatings

An elevated preoperative serum calcium level is a significant predictor for positive peritoneal cytology in endometrial carcinoma

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Chinese Journal of Cancer Research 2019年第6期31卷 965-973页

作者： Xingchen Li Yuan Cheng Yangyang Dong Boqiang Shen Xiao Yang Jiaqi Wang jingyi zhou Jianliu Wang Department of Obstetrics and Gynecology Peking University People's HospitalBeijing 100044China Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases Beijing 100044China

Objective:To evaluate preoperative serum calcium concentration and investigate the association between calcium level and positive peritoneal cytology in endometrial carcinoma(EC).Methods:A total of 510 patients who were diagnosed with EC and had surgery were initially enrolled in this study at Peking University People's Hospital between January 2012 and December *** characteristics and preoperative serum calcium,albumin,carbohydrate antigen(CA)125,CA19-9,carcinoembryonic antigen(CEA)were extracted from patient records and evaluated according to postoperative peritoneal *** factors were assessed with Cox univariate and multivariate *** selected from multivariate analysis results were used to build a predictive ***:A total of 510 patients are identified in our database and 444 patients who fulfilled inclusion and exclusion criteria are included in this *** analysis revealed that ionized calcium concentration was closely related to positive peritoneal cytology,tumor grade and lymph-vascular space invasion(LVSI).Moreover,peritoneal cytology was significantly associated with hypertension,tubal ligation,serum CA125,CA19-9,CEA and ionized calcium *** analysis revealed that albumin-adjusted calcium level,CA125 and tubal ligation were independent predictive factors of positive peritoneal cytology(P<0.05).A combination of ionized calcium level with the other two indexes yielded significantly great area under the curve(AUC=0.824).Conclusions:This study enhanced the value of preoperative ionized calcium *** also identified several potential biomarkers to predict positive peritoneal cytology in EC patients before surgery.

关键词： Endometrial carcinoma serum calcium peritoneal cytology logistic regression predictive model

Fine Paper-Cut of Yueqing

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China & The World Cultural Exchange 2009年第8期75卷 36-39页

作者： Tan jingyi and zhou Xu

The fine paper-cut, popular in Yueqing, Zhejiang Province, evolves from the paper cutting of the Yuan Dynasty applied to dragon boats and shoes. This folk art

关键词：中国剪纸艺术元朝民间艺术

HISTORIC TOWN OF HUANGYAO

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China & The World Cultural Exchange 2009年第8期75卷 44-46页

作者： Tan jingyi and zhou Xu

The historic town of Huangyao is located in the eastern part of southwest Guangxi Zhuang Autonomous Region at the lower stream of the Lijiang River. The town took shape in 968 and thrived during the 17th century. The ... 详细信息

关键词：广西历史名镇黄耀漓江

Beautiful Boxwood Carving

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China & The World Cultural Exchange 2009年第5期75卷 40-41页

作者： Tan jingyi and zhou Xu

Boxwood is a type of evergreen short shrub with a long growth period of 40 or 50 years. As it has a

关键词：雕刻美丽增长期光泽

The role of oestrogen and oestrogencalcium axis in endometrial carcinoma

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Gynecology and Obstetrics Clinical Medicine 2024年第1期4卷 48-55页

作者： Xuerun Liu Jianliu Wang jingyi zhou Department of Obstetrics and Gynecology Peking University People's HospitalBeijing 100044China

Unopposed oestrogen is recognised as an inducer of endometrial *** the past 50 years,the effects of oestrogen on the endometrium and endometrial cancer have been a hot topic in the field of gynaecological *** recent years,a series of studies by our team revealed that the non-genomic transcriptional effects of oestrogen can influence the progression of endometrial carcinoma by regulating calcium ions,suggesting that inhibiting calcium ion channelproteins could serve as an adjuvant therapy for endometrial *** this review,we retrospectively summarise the sources of oestrogen in vivo,the effects of oestrogens on the uterus and endometrium,oestrogen signalling and the clinical application of oestrogen-related compounds,emphasising the significant role of oestrogen-calcium axis inhibition in adjuvant therapy for endometrial cancer.

关键词： estrogen endometrial inhibiting