|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Low Light Level Image Enhancement Based on Multi-layer Slicing Photon Localization Algorithm显示文摘Low light level(LLL) images, which were captured by Intensified CCD(ICCD) camera equipped with an image intensifier, suffer low spatial resolution and contrast due to noise and dispersion. By dividing the integration time into intervals short enough, we obtain photon images where photon formed spots were nearly nonoverlapping. In order to enhance LLL images, we propose a Multi-layer slicing(MLS) photon localization algorithm based on photon images. The photon image is sliced by different planes. Photon spatial distribution(PSD) information is acquired by using pro jected area ratio, circularity and the number of slices. The enhanced LLL image is obtained by accumulating time-domain correlated PSD images. Experimental results show that the visual effects,spatial frequencies and contrast of the enhanced image are significantly improved. | YING Changsheng ZHAO Peng YUE Dan LI Ye | 2018 | Chinese Journal of Electronics2018，27，3： | 2 |
| 2 | Spatio-temporal evolution and factor explanatory power analysis of urban resilience in the Yangtze River Economic Belt显示文摘Urban resilience assesses a city’s ability to withstand unknown risks.Scholars are not comprehensive in assessing urban resilience,and they lack consideration of population resilience.This study investigated 110 prefecturelevel cities in the Yangtze River Economic Belt(YREB)as study areas.We calculated the YREB’s level of urban resilience based on the aspects of“economy-society-population-ecology-infrastructure”,which ensured that the comprehensive evaluation of urban resilience is complete and sufficient.The spatio-temporal evolution of urban resilience was analyzed using exploratory spatial data.Geodetectors were used to investigate the impact of several indicators,focusing on economic,social,population,ecological,and infrastructure factors,on urban resilience.The results showed that the urban resilience of the YREB has maintained a slow upward trend from 2005 to 2018,and the average urban resilience of the YREB has risen from 0.2442 to 0.2560.The resilience gap between cities in the study region increased initially and then decreased.The dominant factor in the spatial differentiation of urban resilience was the economic factors,followed by the population factors.Urban resilience has been clarified and an evaluation index system is constructed,which can provide an effective reference for the evaluation of urban resilience among countries around the world.Based on this,factors that optimize urban resilience are configured,and the regional and national sustainable development can be promoted. | Changsheng Ye Mengshan Hu Lei Lu Qian Dong Moli Gu | 2022 | Geography and Sustainability2022，3，4： | 1 |
| 3 | Trastuzumab-Induced Severe Thrombocytopenia: A Case Report and Literature Review显示文摘Wie present a 29-year-old woman with pT2N0M0 breast cancer,histological diagnosis of invasive ductal carcinoma,ER and PR low positive,and HER-2(3+).The patient developed trastuzumab-induced thrombocytopenia in 6 hours after an intravenous infusion of trastuzumab at the second cycle of trastuzumab treatment with the symptom of abnormal uterine bleeding.Laboratory exam revealed a sharp drop of platelet count down to 3X109/L.With the treatment of single-donor platelet transfusions,glucocorticoids,oxytocin and thrombopoietic drugs,the platelet count recovered completely in 11 days.This case was confirmed to be severe thrombocytopenia induced by trastuzumab,and retreatment with trastuzumab was not attempted.With increasing clinical utilization of trastuzumab,clinicians are likely to encounter more life-threatening trastuzumab induced severe thrombocytopenia.By this case report and literature review we hope to increase the awareness,attach the attentions to this condition,and help with the effective treatment. | Xiaoqi Zeng Shanshan Jiang Yuanyang Peng Minfeng Liu Changsheng Ye Jianyu Dong | 2020 | Chinese Medical Sciences Journal2020，35，4： | 1 |
| 4 | Aeolian activity in the southern Gurbantunggut Desert of China during the last 900 years显示文摘The mineral dust emitted from Central Asia has a significant influence on the global climate system.However,the history and mechanisms of aeolian activity in Central Asia remain unclear,due to the lack of well-dated records of aeolian activity and the intense wind erosion in some of the dust source areas(e.g.,deserts).Here,we present the records of aeolian activity from a sedimentary sequence in the southern Gurbantunggut Desert of China using grain size analysis and optically stimulated luminescence(OSL)dating,based on field sampling in 2019.Specifically,we used eight OSL dates to construct chronological frameworks and applied the end-member(EM)analysis for the grain size data to extract the information of aeolian activity in the southern Gurbantunggut Desert during the last 900 a.The results show that the grain size dataset can be subdivided into three EMs(EM1,EM2,and EM3).The primary modal sizes of these EMs(EM1,EM2,and EM3)are 126.00,178.00,and 283.00μm,respectively.EM1 represents a mixture of the suspension components and saltation dust,while EM2 and EM3 show saltation dust transported over a shorter distance via strengthened near-surface winds,which can be used to trace aeolian activity.Combined with the OSL chronology,our results demonstrate that during the last 900 a,more intensive and frequent aeolian activity occurred during 450-100 a BP(Before Present)(i.e.,the Little Ice Age(LIA)),which was reflected by a higher proportion of the coarse-grained components(EM2+EM3).Aeolian activity decreased during 900-450 a BP(i.e.,the Medieval Warm Period(MWP))and 100 a BP-present(i.e.,the Current Warm Period(CWP)).Intensified aeolian activity was associated with the strengthening of the Siberian High and cooling events at high northern latitudes.We propose that the Siberian High,under the influence of temperature changes at high northern latitudes,controlled the frequency and intensity of aeolian activity in Central Asia.Cooling at high northern latitudes would have significantly enhanced the Siberian High,causing its position to shift southward.Subsequently,the incursion of cold air masses from high northern latitudes resulted in stronger wind regimes and increased dust emissions from the southern Gurbantunggut Desert.It is possible that aeolian activity may be weakened in Central Asia under future global warming scenarios,but the impact of human activities on this region must also be considered. | LI Wen MU Guijin YE Changsheng XU Lishuai LI Gen | 2023 | Journal of Arid Land2023，15，6： | 0 |
| 5 | Talachalasins A-C,Undescribed Cytochalasans with a 16β-Methyl or 2-Oxabicyclo[3.3.1]nonan-3-one unit from the Deep-Sea-Derived Fungus Talaromyces muroii sp.SCSIO 40439显示文摘Comprehensive Summary Talachalasins A-C(1-3),three new cytochalasans(CYTs),were isolated from deep-sea-derived fungus Talaromyces muroii sp.SCSIO 40439.The structures of 1-3,including absolute configurations,were determined based on HRESIMS,NMR spectroscopic data,ECD comparison,and single crystal X-ray diffraction analysis.Talachalasins A-C(1-3)represented the first examples of cytochalasans possessing a unique 16β-methyl group,distinct from>500 reported CYTs.Talachalasin C(3)was an unprecedented 20,21-seco-cytochalasans characterized by a 2-oxabicyclo[3.3.1]nonan-3-one unit.Talachalasin A(1)displayed moderate cytotoxic activity against four tumor cell lines(IC_(50)3.40-10.02μM).Talachalasin B(2)showed comparable anti-RSV and HSV-1 activities(IC5012.5μM or IC5020.0μM). | Xuemin Ding Weixia Ye Bin Tan Qiaoyun Song Yuchan Chen Wei Liu Lili Sun Wei Tang Yulei Qiao Qingbo Zhang Haibo Zhang Ying Wang Weimin Zhang Changsheng Zhang Wenjun Zhang | 2023 | Chinese Journal of Chemistry2023，41，8： | 0 |
| 6 | Study on halotolerance of phyllosoma larva of Chinese spiny lobster (Panulirus stimpsoni Holthuis)显示文摘The halotolerance of phyllosoma larva of Chinese spiny lobster (Panulirus stimpsoni Holthuis) was experimentally studied in a man-made seawater of 13, 15, 19, 23, 27, 31, 35, 39,43, 47 and 49 salinity. The experimental results showed that phyllosoma lame survived for 4~6 d with a rate of 25.0% to 47.5% if seawater salinity was increased or decreased gradually from 31 to 49 or to 13 respectively. In a range of 23 to 39 salinity, the phyllosoma larva grew, developed and metamor phosed normally, the metamorphosis rate of which in Stages Ⅱ and Ⅲ being 85% and 48%, respec tively, when cultured in seawater of 31 salinity. It seems that some regular dispersion of larvae ap peared in various salinities of seawater; In lower salinity, they mainly dispersed in the lower layer and in higher salinity, almost stayed in the upper and middle layers. Also, the results indicated that the phyllo soma larva of Chinese spiny lobster had a strong halotolerance to various salinities of seawater ranging from 15 to 47,in which 27 to 35 salinities were appropriate for larva growth and development. | Chen Changsheng, Chen Zhengqiang, Hu Jiacai, Ye Zhaohong, Ji Dehua, Lan Liangchun 1. Institute of Aquaculture Biotechnogy, Jimei University, Xiamen 361021, China | 2001 | Acta Oceanologica Sinica2001，20，3： | 0 |
| 7 | Facile synthesis of efficient pentaethylenehexamine-phosphotungstic acid heterogeneous catalysts for oxidative desulfurization显示文摘The ultra-deep desulfurization of oil needs to be solved urgently due to various problems,including environmental pollution and environmental protection requirements.Oxidative desulfurization(ODS)was considered to be the most promising technology.The facile synthesis of highly efficient and stable HPW-based heterogeneous catalysts for oxidative desulfurization is still a challenging task.In this paper,pentamethylene hexamine(PEHA)and phosphotungstic acid(HPW)were combined by a simple one-step method to prepare a heterogeneous catalyst of PEHA-HPW for the production of ultra-deep desulfurization fuel oil.The composite material exhibited excellent catalytic activity and high recyclability,which could reach a 100% dibenzothiophene(DBT)removal rate in 30 min and be recycled at least 5 times.Experiments and DFT simulations were used to better examine the ODS mechanism of PEHA-HPW.It was proved that the rich amino groups on the surface of PEHA-HPW play a crucial role.This work provides a simple and feasible way for the manufacture of efficient HPW-based catalysts. | Chongfu Wu Changsheng Chen Zhaoyang Qi Jie Chen Qinglian Wang Changshen Ye Ting Qiu | 2023 | Chinese Journal of Chemical Engineering2023，63，11： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员