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Detection of astrophysical gravitational wave sources by TianQin and LISA

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Science China(Physics,Mechanics & Astronomy) 2024年第5期67卷 123-163页

作者： Alejandro Torres-Orjuela Shun-Jia Huang Zheng-Cheng Liang Shuai Liu Hai-Tian Wang Chang-qing ye Yi-Ming Hu Jianwei Mei MOE Key Laboratory of Tian Qin Mission Tian Qin Research Center for Gravitational PhysicsSchool of Physics and AstronomyFrontiers Science Center for Tian QinGravitational Wave Research Center of CNSASun Yat-Sen University(Zhuhai Campus)Zhuhai 519082China Department of Physics The University of Hong KongHong Kong 999077China Kavli Institute for Astronomy and Astrophysics Peking UniversityBeijing100871China

TianQin and LISA are space-based laser interferometer gravitational wave(GW)detectors planned to be launched in the *** detectors will detect low-frequency GWs around 10^(-2)Hz;however,Tian Qin is more sensitive to frequencies above this common sweet-spot while LISA is more sensitive to frequencies below 10^(-2)***,Tian Qin and LISA will be able to detect the same sources but with different accuracy depending on the source and its *** consider some of the most important astrophysical sources—massive black hole binaries,stellar-mass black hole binaries,double white dwarfs,extreme mass ratio inspirals,light and heavy intermediate mass ratio inspirals,as well as the stochastic gravitational background of astrophysical origin—that Tian Qin and LISA will be able to *** each of these sources,we analyze how far they can be detected(detection distance)and how well their parameters can be measured(detection accuracy)using a Fisher Matrix *** compare the results obtained by the three detection scenarios(Tian Qin alone,LISA alone,and joint detection by LISA and Tian Qin)highlighting the gains from joint detection as well as the contribution of Tian Qin and LISA to a combined study of astrophysical *** particular,we consider the different orientations,lifetimes,and duty cycles of the two detectors to explore how they can give a more complete picture when working together.

关键词： wave extreme stochastic

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目标跨像元展宽“分裂”退化模型与检测研究

红外与毫米波学报 2023年第3期42卷 391-398页

作者：何青叶林长青中国科学院上海技术物理研究所中国科学院智能红外感知重点实验室上海200083 中国科学院大学北京100049

采用大规模红外探测器的遥感仪器对以恒星为主的点目标成像时,受点目标跨像元效应、探测器读出带宽不足等影响,目标信号展宽,在多抽头间隔采样下出现“分裂点”现象,空间红外遥感仪器定位精度、目标辨识能力下降。针对此问题,本文构建... 详细信息

采用大规模红外探测器的遥感仪器对以恒星为主的点目标成像时,受点目标跨像元效应、探测器读出带宽不足等影响,目标信号展宽,在多抽头间隔采样下出现“分裂点”现象,空间红外遥感仪器定位精度、目标辨识能力下降。针对此问题,本文构建了点目标“分裂”退化模型,并根据分裂点之间的强相关性,设计了预检测-能量维度迭代-模型更新-后检测的目标检测流程,通过形态学滤波与多假设关联跟踪对“分裂点”目标各观测进行独立跟踪,获取“分裂点”统计信息。然后利用已知恒星成像的质心矫正退化模型并映射到检测图像,修正目标质心。测试结果表明,该方法能有效区分多目标和“分裂点”造成的假目标,平均定位精度由0.5像元以上提升到0.15像元内。

关键词： “:分裂点”目标退化模型多假设关联跟踪质心校正

Large vessel vasculitis with rare presentation of acute rhabdomyolysis:A case report and review of literature

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World Journal of Clinical Cases 2022年第13期10卷 4137-4144页

作者： Lan-Jun Fu Shou-Ci Hu Wen Zhang Li-qing ye Hong-Bo Chen Xiao-Jun Xiang Department of Nephrology The First Affiliated Hospital of Zhejiang Chinese Medical University(Zhejiang Provincial Hospital of Traditional Chinese Medicine)Hangzhou 310006Zhejiang ProvinceChina

BACKGROUND Musculoskeletal involvement in primary large vessel vasculitis(LVV),including giant cell arteritis and Takayasu's arteritis(TAK),tends to be *** the progression of arterial disease,patients may develop polyarthralgia and myalgias,mainly involving muscle stiffness,limb/jaw claudication,cold/swelling extremities,*** development of rhabdomyolysis in addition to aortic aneurysm is uncommon in ***,we report a rare case of LVV with the first presentation of acute *** SUMMARY A 70-year-old Asian woman suffering from long-term low back pain was hospitalized due to limb claudication,dark urine and an elevated creatine kinase(CK)*** treatment with fluid resuscitation and antibiotics,the patient remained *** workup showed persistent elevated levels of inflammatory markers,and imaging studies revealed an aortic aneurysm.A decreasing CK was evidently combined with elevated inflammatory markers and negativity for antineutrophilic cytoplasmic *** was suspected and confirmed by magnetic resonance angiography and positron emission tomography with 18Ffluorodeoxyglucose/computed *** a favourable response to immunosuppressive treatment,her symptoms resolved,and clinical remission was achieved one month ***,after failing to follow the tapering schedule,the patient was readministered 25 mg/d prednisolone due to disease ***-up examinations showed decreased inflammatory markers and substantial improvement in artery lesions after 6 mo of *** the twelvemonth follow-up,she was clinically stable and maintained on corticosteroid *** An exceptional presentation of LVV with acute rhabdomyolysis is described in this case,which exhibited a good response to immunosuppressive therapy,suggesting consideration for a differential diagnosis when evaluating febrile patients with myalgia and elevated *** use of high-dose steroids until a diagnosis is established may yi

关键词： Large vessel vasculitis Rhabdomyolysis Giant cell arteritis 18F-fluorodeoxyglucose-positron emission tomography/computed tomography Immunosuppressive treatment Case report

Gelcasting of titanium hydride to fabricate low-cost titanium

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Rare Metals 2015年第5期34卷 351-356页

作者： qing ye Zhi-Meng Guo Jian-Ling Bai Bo-Xin Lu Jun-Pin Lin Jun-Jie Hao Ji Luo Hui-Ping Shao Institute for Advanced Materials and Technology University of Science and Technology Beijing State Key Laboratory of Advanced Metals and Materials University of Science and Technology Beijing

In this work, low-cost titanium was fabricated by gelcasting of titanium hydride powder. The effects of morphology and grain composition of powder raw material and solid loading on the rheological behavior of gelcasting slurry were studied. The degreasing, dehydriding and sintering behaviors of gelcasted green body were investigated by differential thermal analysis （DTA） and dilatometer. The results show that the solid loading of titanium hydride slurry reaches 50 vol%. Combination of dehydriding and sintering in one process accelerates the densification, and the relative sintered density of the final part achieves 96.5 %. In order to test the ability of gelcasting process for fabricating structural materials, a resin handle produced by 3D printing technology was used as a model and a titanium handle was successfully fabricated. Higher solid loading and better sinterability of titanium hydride powder promote manufacture of bulk titanium with high relative density, complex shape and well-defined microstructure.

关键词： Gelcasting Titanium hydride Powder metallurgy Sintering Titanium

Amine-functionalized low-cost industrial grade multi-walled carbon nanotubes for the capture of carbon dioxide

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Journal of Energy Chemistry 2014年第1期23卷 111-118页

作者： qing Liu Yao Shi Shudong Zheng Liqi Ning qing ye Mengna Tao Yi He Key Laboratory of Biomass Chemical Engineering of Ministry of Education Department of Chemical and Biological Engineering Zhejiang University Department of Earth and Planetary Sciences Washington University in St. Louis Department of Life Sciences Shaoxing University Yuanpei College

Industrial grade multi-walled carbon nanotubes(IG-MWCNTs) are a low-cost substitute for commercially purified multi-walled carbon nanotubes(P-MWCNTs). In this work, IG-MWCNTs were functionalized with tetraethylenepentamine(TEPA) for CO2capture. The TEPA impregnated IG-MWCNTs were characterized with various experimental methods including N2adsorption/desorption isotherms, elemental analysis, X-ray diffraction, Fourier transform infrared spectroscopy and thermogravimetric analysis. Both the adsorption isotherms of IGMWCNTs-n and the isosteric heats of different adsorption capacities were obtained from experiments. TEPA impregnated IG-MWCNTs were also shown to have high CO2adsorption capacity comparable to that of TEPA impregnated P-MWCNTs. The adsorption capacity of IG-MWCNTs based adsorbents was in the range of 2.145 to 3.088 mmol/g, depending on adsorption temperatures. Having the advantages of low-cost and high adsorption capacity, TEPA impregnated IG-MWCNTs seem to be a promising adsorbent for CO2capture from flue gas.

关键词： Adsorbents Adsorption Adsorption isotherms Carbon dioxide process Costs Fourier transform infrared spectroscopy Thermogravimetric analysis X ray diffraction

The symbiont Wolbachia alleviates pesticide susceptibility in the two-spotted spider mite Tetranychus urticae through enhanced host detoxification pathways

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Insect Science 2024年第6期31卷 1822-1837页

作者： qing-Tong ye Xue Gong Huan-Huan Liu Bing-Xuan Wu Chang-Wu Peng Xiao-Yue Hong Xiao-Li Bing Department of Entomology Nanjing Agricultural UniversityNanjingChina

The two-spotted spider mite(Tetranychus urticae)is one of the most well-known pesticide-resistant agricultural pests,with resistance often attributed to changes such as target-site mutations and detoxification *** studies show that pesticide resistance can also be influenced by symbionts,but their involvement in this process in spider mites remains ***,we found that infection with Wolbachia,a well-known bacterial reproductive manipulator,significantly increased mite survival after exposure to the insecticides abamectin,cyflumetofen,and ***-infected(WI)mites showed higher expression of detoxification genes such as P450,glutathione-S-transferase(GST),ABC transporters,and carboxyl/*** interference experiments confirmed the role of the two above-mentioned detoxification genes,TuCYP392D2 and TuGSTd05,in pesticide *** GST activities were also observed in abamectin-treated WI *** addition,when wild populations were treated with abamectin,WI mites generally showed better survival than uninfected ***,genetically homogeneous mites with different Wolbachia strains showed similar ***,abamectin treatment increased Wolbachia abundance without altering the mite's bacterial *** finding highlights the role of Wolbachia in orchestrating pesticide resistance by modulating host *** unraveling the intricate interplay between symbionts and pesticide resistance,our study lays the groundwork for pioneering strategies to combat agricultural pests.

关键词： abamectin detoxification pesticide spider mite Tetranychus urticae Wolbachia

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指纹识别系统中的预处理组合算法

光电工程 2009年第4期36卷 140-145页

作者：叶青北方工业大学信息工程学院北京100144

针对电容式传感器采集的指纹图像的特点,本文提出了一套完整的指纹图像预处理组合算法。该算法充分考虑到了采集到的指纹图像的质量和图像面积等问题,且从全局角度出发在当前原有算法基础上加入了两次滤波去噪来增强指纹纹线并有效消除... 详细信息

针对电容式传感器采集的指纹图像的特点,本文提出了一套完整的指纹图像预处理组合算法。该算法充分考虑到了采集到的指纹图像的质量和图像面积等问题,且从全局角度出发在当前原有算法基础上加入了两次滤波去噪来增强指纹纹线并有效消除噪声以得到更清晰准确的处理结果。算法首先对采集到的指纹图像采用边缘保持滤波法去除噪声;然后使用基于纹路方向性的Cabor滤波图像增强算法增强去噪后的指纹图像,减少因指纹旋转及平移因素造成的误差;接着对增强后的图像采用动态阈值法进行二值化处理并进一步地二次滤波去噪;最后采用基于形态学的细化算法对二值图像进行细化将其变为点线图。实验证明,通过该算法处理后的图像很好地保留了纹线的关键信息,有利于后续的指纹特征提取和匹配。

关键词：指纹预处理滤波方向图 Cabor滤波增强二值化细化

Magneto-mechanical effect of magnetic microhydrogel for improvement of magnetic neuro-stimulation

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Nano Research 2023年第5期16卷 7393-7404页

作者： Le Xue qing ye Linyuan Wu Dong Li Siyuan Bao qingbo Lu Sha Liu Dongke Sun Zonghai Sheng Zhijun Zhang Ning Gu Jianfei Sun State Key Laboratory of Bioelectronics Jiangsu Key Laboratory of Biomaterials and DevicesSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210009China School of Mechanic Engineering Southeast UniversityNanjing 211189China Department of Neurology Affiliated Zhongda HospitalSchool of MedicineInstitution of NeuropsychiatrySoutheast UniversityNanjing 210009China Paul C.Lauterbur Research Center for Biomedical Imaging Key Laboratory for Magnetic Resonance and Multimodality Imaging of Guangdong ProvinceShenzhen Key Laboratory of Ultrasound Imaging and TherapyCAS Key Laboratory of Health InformaticsInstitute of Biomedical and Health EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Department of Mental Health and Public Health Faculty of Life and Health SciencesShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China School of Medicine Nanjing UniversityNanjing 210008China

Superparamagnetic iron oxide(SPIO)nanoparticles play an important role in mediating precise and effective magnetic neurostimulation and can help overcome limitations related to penetration depth and spatial ***,nanoparticles readily diffuse in vivo,decreasing the spatial resolution and activation *** this study,we employed a microfluidic means to fabricate injectable microhydrogels encapsulated with SPIO nanoparticles,which significantly improved the stability of nanoparticles,increased the magnetic properties,reinforced the stimulation *** fabricated magnetic microhydrogels were highly uniform in size and sphericity,enabling minimally invasive injection into brain *** long-term residency in the cortex up to 22 weeks and the safety of brain tissue were shown using a mouse *** addition,we quantitatively determined the magneto-mechanical force yielded by only one magnetic microhydrogel using a video-based *** force was found to be within 7–8 pN under 10 Hz magnetic stimulation by both theoretical simulation and experimental ***,electrophysiological measurement of brain slices showed that the magnetic microhydrogels offer significant advantages in terms of neural activation relative to dissociative SPIO nanoparticles.A universal strategy is thus offered for performing magnetic neuro-stimulation with an improved prospect for biomedical translation.

关键词： magnetic stimulation superparamagnetic iron oxide(SPIO)nanoparticles magnetic microhydrogel long-term residency magneto-mechanical effect

Elevated Arsenic Exposure Is Associated with an Increased Risk of Chronic Hepatitis B Virus Infection： NHANES （2003-2014） in U.S. Adults

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Current Medical Science 2018年第4期38卷 610-617页

作者： Wei-hua ZHANG Jiao HUANG Mei FENG ye-qing TONG Xu-hua GUAN Hong-wei JIANG Sheng WEI Department of Epidemiology and Biostatistics Key Laboratory of Environment and Health of Ministry of Education School of Public Health Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China Department of Preventive Medicine School of Medicine Ningbo University Ningbo 315211 China Institute of Infectious Disease Control and Prevention Hubei Provincial Center for Disease Control and Prevention Wuhan 430079 China

Studies concerning the association between arsenic exposure and hepatitis B virus （HBV） infection have been lacking. The present study aimed to examine the association between total urinary arsenic （TUA） and infection ofHBV. A total of 5186 participants from National Health and Nutrition Examination Survey （NHANES） 2003-2014 were included in the analysis. We used logistic regression to evaluate the association. We defined two measures of TUA. TUA1 was the sum of arsenous acid, arsenicacid, monomethylarsonic acid and dimethylarsenic acid. TUA2 was defined as TUA minus arsenobetaine and arsenocholine. The results showed that the weighted overall prevalence of HBV infection was 6.08%. For NHANES 2003-2014, the medians （interquartile range） of TUA1 and TUA2 were 5.60 μg/L （3.97-8.09 μg/L） and 4.91 μg/L （2.36-9.11 μg/L）, respectively. Comparing the highest quartile to the lowest quartile after multivariable adjustment showed that the odds ratios （ORs） and 95% confidence intervals （CIs） for TUA1 and TUA2 were 2.44 （1.40-4.27） and 2.84 （1.60-5.05）, respectively. In conclusion, elevated urinary arsenic was associated with the risk of HBV infection. Further studies, especially prospective studies, are needed to confirm the causal relationship between arsenic exposure and HBV infection.

关键词： arsenic exposure hepatitis B infection National Health and Nutrition Examination Survey