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| 1 | Analysis of the factors affecting the magnetic characteristics of nano-Fe_3O_4 particles显示文摘We prepared Fe3O4 nanoparticles using chemical coprecipitation and studied the factors affecting the magnetic characteristics of nano-Fe3O4 particles.We identified four factors and three levels of an orthogonal experiment and investigated these four factors that affect the magnetic characteristics of the Fe3O4 particles.We obtained important information from this investigation.The Fe3+ to Fe2+ molar ratio,the iron precursor salt,the amount of surfactant and the amount of alkali were found to be important.We also studied the influence of the order of alkali and surfactant addition,the aging time and the stirring speed on the magnetic characteristics of the nano-Fe3O4 particles.The Fe3O4 preparation process was also analyzed. | LI JianLing LI DeCai ZHANG ShaoLan CUI HongChao WANG Cui | 2011 | Chinese Science Bulletin2011，56，8： | 2 |
| 2 | Error suppression techniques for energy-efficient high-resolution SAR ADCs显示文摘The successive approximation register(SAR)is one of the most energy-efficient analog-to-digital converter(ADC)architecture for medium-resolution applications.However,its high energy efficiency quickly diminishes when the target resolution increases.This is because a SAR ADC suffers from several major error source,including the sampling kT/C noise,the comparator noise,and the DAC mismatch.These errors are increasing hard to address in high-resolution SAR ADCs.This paper reviews recent advances on error suppression techniques for SAR ADCs,including the sampling kT/C noise reduction,the noise-shaping(NS)SAR,and the mismatch error shaping(MES).These techniques aim to boost the resolution of SAR ADCs while maintaining their superior energy efficiency. | Jiaxin Liu Xiyuan Tang Linxiao Shen Shaolan Li Zhelu Li Wenjuan Guo Nan Sun | 2020 | Journal of Semiconductors2020，41，11： | 2 |
| 3 | Co-culture of Schwann cells and endothelial cells for synergistically regulating dorsal root ganglion behavior on chitosan-based anisotropic topology for peripheral nerve regeneration显示文摘Background:Anisotropic topologies are known to regulate cell-oriented growth and induce cell differentiation,which is conducive to accelerating nerve regeneration,while co-culture of endothelial cells(ECs)and Schwann cells(SCs)can significantly promote the axon growth of dorsal root ganglion(DRG).However,the synergistic regulation of EC and SC co-culture of DRG behavior on anisotropic topologies is still rarely reported.The study aims to investigate the effect of anisotropic topology co-cultured with Schwann cells and endothelial cells on dorsal root ganglion behavior for promoting peripheral nerve regeneration.Methods:Chitosan/artemisia sphaerocephala(CS/AS)scaffolds with anisotropic topology were first prepared using micro-molding technology,and then the surface was modified with dopamine to facilitate cell adhesion and growth.The physical and chemical properties of the scaffolds were characterized through morphology,wettability,surface roughness and component variation.SCs and ECs were co-cultured with DRG cells on anisotropic topology scaffolds to evaluate the axon growth behavior.Results:Dopamine-modified topological CS/AS scaffolds had good hydrophilicity and provided an appropriate environment for cell growth.Cellular immunofluorescence showed that in contrast to DRG growth alone,co-culture of SCs and ECs could not only promote the growth of DRG axons,but also offered a stronger guidance for orientation growth of neurons,which could effectively prevent axons from tangling and knotting,and thus may significantly inhibit neurofibroma formation.Moreover,the co-culture of SCs and ECs could promote the release of nerve growth factor and vascular endothelial growth factor,and up-regulate genes relevant to cell proliferation,myelination and skeletal development via the PI3K-Akt,MAPK and cytokine and receptor chemokine pathways.Conclusions:The co-culture of SCs and ECs significantly improved the growth behavior of DRG on anisotropic topological scaffolds,which may provide an important basis for the development of nerve grafts in peripheral nerve regeneration. | Tiantian Zheng Linliang Wu Shaolan Sun Jiawei Xu Qi Han Yifan Liu Ronghua Wu Guicai Li | 2022 | Burns & Trauma2022，10，1： | 2 |
| 4 | Determination of carboplatin in plasma and tumor by high-performance liquid chromatography-mass spectrometry显示文摘 | Guo Ping Li Shaolan Gallo James M | 2003 | Journal of Chromatography B2003，783，1： | 1 |
| 5 | Nurses' knowledge and attitudes regarding potential impacts of climate change on public health in central of China显示文摘Objective:This study aims to determine the knowledge and attitudes of nurses concerning climate change and their role in addressing health-related impacts of climate change in Central China.Method:The cross-sectional study was conducted in 2014.The study randomly selected nurses from hospitals in Central of China and they were asked to complete a questionnaire about climate change Descriptive statistical analysis was used to analyze the data.Results:Majority of nurses(76%)knew about the climate change would affect public health.But more than half of the nurses did not know their work could also affect the development of climate change;83e96%of the nurses thought it were necessary and would like to learn the knowledge about climate change.Conclusion:The education program about this issue in Chinese colleges or universities is still very weak nursing courses and needs to be emphasized in the future. | Juan Xiao Wei Fan Yang Deng Shaolan Li Ping Yan | 2016 | International Journal of Nursing Sciences2016，3，2： | 1 |
| 6 | Overview of the LAMOST survey in the first decade显示文摘The Large Sky Area Multi-Object Fiber Spectroscopic Telescope(LAMOST),also known as the Guoshoujing Telescope,is a major national scientific facility for astronomical research located in Xinglong,China.Beginning with a pilot survey in 2011,LAMOST has been surveying the night sky for more than 10 years.The LAMOST survey covers various objects in the Universe,from normal stars to peculiar ones. | Hongliang Yan Haining Li Song Wang Weikai Zong Haibo Yuan Maosheng Xiang Yang Huang Jiwei Xie Subo Dong Hailong Yuan Shaolan Bi Yaoquan Chu Xiangqun Cui Licai Deng Jianning Fu Zhanwen Han Jinliang Hou Guoping Li Chao Liu Jifeng Liu Xiaowei Liu Ali Luo Jianrong Shi Xuebing Wu Haotong Zhang Gang Zhao Yongheng Zhao | 2022 | The Innovation2022，3，2： | 0 |
| 7 | Rapid detection of chlorophyll content and distribution in citrus orchards based on low-altitude remote sensing and bio-sensors显示文摘The accuracy of detecting the chlorophyll content in the canopy and leaves of citrus plants based on sensors with different scales and prediction models was investigated for the establishment of an easy and highly-efficient real-time nutrition diagnosis technology in citrus orchards.The fluorescent values of leaves and canopy based on the Multiplex 3.6 sensor,canopy hyperspectral reflectance data based on the FieldSpec4 radiometer and spectral reflectance based on low-altitude multispectral remote sensing were collected from leaves of Shatang mandarin and then analyzed.Additionally,the associations of the leaf SPAD(soil and plant analyzer development)value with the ratio vegetation index(RVI)and normalized differential vegetation index(NDVI)were analyzed.The leaf SPAD value predictive model was established by means of univariate and multiple linear regressions and the partial least squares method.Variable distribution maps of the relative canopy chlorophyll content based on spectral reflectance in the orchard were automatically created.The results showed that the correlations of the SPAD values obtained from the Multiplex 3.6 sensor,FieldSpec4 radiometer and low-altitude multispectral remote sensing were highly significant.The measures of goodness of fit of the predictive models were R^(2)=0.7063,RMSECV=3.7892,RE=5.96%,and RMSEP=3.7760 based on RVI_((570/800)) and R^(2)=0.7343,RMSECV=3.6535,RE=5.49%,and RMSEP=3.3578 based on NDVI[(570,800)(570,950)(700,840)].The technique to create spatial distribution maps of the relative canopy chlorophyll content in the orchard was established based on sensor information that directly reflected the chlorophyll content of the plants in different parts of the orchard,which in turn provides evidence for implementation of orchard productivity evaluation and precision in fertilization management. | Kejian Wang Wentao Li Lie Deng Qiang Lyu Yongqiang Zheng Shilai Yi Rangjin Xie Yanyan Ma Shaolan He | 2018 | International Journal of Agricultural and Biological Engineering2018，11，2： | 0 |
| 8 | Observation and Research on the Twisting Characteristics of Flare Loop System显示文摘We analyze the evolution of Hβ monochromatic images and Hβ velocity fields of the flare loops system on June 4, 1991. It is the first time to demonstrate directly the dynamic process of the energy storage, transportation and release of the twisting magnetic fields in the flare process. | Li Rufeng, Bi Shaolan, Dun Jinping (Yunnan Observatory, The Chinese Academy of Sciences, Kunming 650011, China)$$$$ | 1999 | 天文研究与技术1999，，S1： | 0 |
| 9 | Al-induced proteomics changes in tomato plants over-expressing a glyoxalase I gene显示文摘Glyoxalase I(Gly I)is the first enzyme in the glutathionine-dependent glyoxalase pathway for detoxification of methylglyoxal(MG)under stress conditions.Transgenic tomato‘Money Maker’plants overexpressing tomato SlGlyI gene(tomato unigene accession SGN-U582631/Solyc09g082120.3.1)were generated and homozygous lines were obtained after four generations of self-pollination.In this study,SlGlyI-overepxressing line(GlyI),wild type(WT,negative control)and plants transformed with empty vector(ECtr,positive control),were subjected to Al-treatment by growing in Magnavaca’s nutrient solution(pH 4.5)supplemented with 20μM Al3+ion activity.After 30 days of treatments,the fresh and dry weight of shoots and roots of plants from Al-treated conditions decreased significantly compared to the non-treated conditions for all the three lines.When compared across the three lines,root fresh and dry weight of GlyI was significant higher than WT and ECtr,whereas there was no difference in shoot tissues.The basal 5mm root-tips of GlyI plants expressed a significantly higher level of glyoxalase activity under both non-Al-treated and Al-treated conditions compared to the two control lines.Under Al-treated condition,there was a significant increase in MG content in ECtr and WT lines,but not in GlyI line.Quantitative proteomics analysis using tandem mass tags mass spectrometry identified 4080 quantifiable proteins and 201 Al-induced differentially expressed proteins(DEPs)in roottip tissues from GlyI,and 4273 proteins and 230 DEPs from ECtr.The Al-down-regulated DEPs were classified into molecular pathways of gene transcription,RNA splicing and protein biosynthesis in both GlyI and ECtr lines.The Alinduced DEPs in GlyI associated with tolerance to Al3+and MG toxicity are involved in callose degradation,cell wall components(xylan acetylation and pectin degradation),oxidative stress(antioxidants)and turnover of Al-damaged epidermal cells,repair of damaged DNA,epigenetics,gene transcription,and protein translation.A protein–protein association network was constructed to aid the selection of proteins in the same pathway but differentially regulated in GlyI or ECtr lines.Proteomics data are available via ProteomeXchange with identifiers PXD009456 under project title‘25Dec2017_Suping_XSexp2_ITAG3.2’for SlGlyI-overexpressing tomato plants and PXD009848 under project title‘25Dec2017_Suping_XSexp3_ITAG3.2’for positive control ECtr line transformed with empty vector. | Xudong Sun Hui Li Santosh Thapa Sasikiran Reddy Sangireddy Xiaobo Pei Wei Liu Yuping Jiang Shaolan Yang Dafeng Hui Sarabjit Bhatti Suping Zhou Yong Yang Tara Fish Theodore W.Thannhauser | 2020 | Horticulture Research2020，7，1： | 0 |
| 10 | Discovery of gas-discharged pits(gas pit)in the plains of the Yellow River delta显示文摘A kind of special sedimentary structures are developed in the overwater plains of the Yellow River delta. They look like funnels: round or nearly round, concave of pit-like, with a diameter ranging from several centimeters to 20 or 30 cm, and depth from several millimeters to over 20 cm. There is a vertical pipe (called gas discharging conduit) in the center, with a diameter of several millimeters to 1 cm, depth of several centimeters to more than 10 cm. There may be a lip-like relief (called 'lip-like relief') on the periphery or some parts of the periphery, with ring structures showing horizontal stratification on the inner margin. Plant debris carbonized, plant fragments or dark-colored minerals may sometimes be found in the center of the pits. Such structures are usually developed in silt (with minor clay laminations), often underlain by one or more thin layers of mud matter. Our studies find that they are genetically related with gas discharging of organic matter during biological degradation. | Jianhua Zhong Yaoqi Zhou Shoujun Li Shaolan Wang | 1999 | Chinese Science Bulletin1999，44，15： | 0 |
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