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| 1 | Flexible and transparent graphene/silver-nanowires composite ?lm for high electromagnetic interference shielding effectiveness显示文摘Herein, an efficient approach to prepare flexible, transparent, and lightweight films based on graphene nanosheets(GNS) and silver nanowires(AgNWs) for high electromagnetic interference(EMI) shielding effectiveness(SE) has been explained. High-conductive GNS were fabricated by liquid phase stripping and composited with AgNWs by a two-step spin-coating method. Owing to the high transparency, good conductivity, and homogeneous distribution of both GNS and AgNWs, the obtained GNS/AgNWs film exhibits superb EMI SE and light transmittance, yielding a significantly high EMI SE up to 26 dB in both Ku-band and K-band and light transmittance higher than 78.4%. Moreover, this GNS/AgNWs film shows good flexibility and excellent structural stability. The obtained flexible, light and transparent film could have a great potential for transparent EMI shielding and smart electronics. | Ning Zhang Zhe Wang Rongguo Song Qianlong Wang Hongye Chen Bin Zhang Haifei Lv Zhi Wu Daping He | 2019 | Science Bulletin2019，64，8： | 12 |
| 2 | Design of a Wide-band Balun Using Parallel Strips 显示文摘 | Jin Shao Rongguo Zhou Chang Chen | 2013 | Microwave and Wireless Components Letters IEEE2013，23，2： | 1 |
| 3 | Study on mechanical behaviors of wedge-ring connection structure with deformable contact under uniaxial tension load显示文摘 | Zhao Rongguo Chen Zhongfu Yin Yihui | 2004 | Key Engineering Materials2004，276，： | 1 |
| 4 | Study on mechanical behaviors of wedge-ring connection structure with deformable contact under uniaxial tension load显示文摘 | ZHAO RongGuo CHEN ZhongFu YIN YiHui | 2004 | Key Engineering Materials2004，，： | 1 |
| 5 | Fabrication and Characterization of Poly(methyl -methacrylate) Microchannels by in Situ Polymerization with a Novel Metal Template显示文摘 | Chen Zhifeng Gao Yunhua Su Rongguo | 2003 | Electrophoresis2003，24，18： | 1 |
| 6 | Optimization of central venous pressure during the perioperative period is associated with improved prognosis of high-risk operation patients显示文摘Background:While central venous pressure(CVP)measurement is used to guide fluid management for high-risk surgical patients during the perioperative period,its relationship to patient prognosis is unknown.Methods:This single-center,retrospective observational study enrolled patients undergoing high-risk surgery from February 1,2014 to November 31,2020,who were admitted to the surgical intensive care unit(ICU)directly after surgery.Patients were divided into the following three groups according to the first CVP measurement(CVP1)after admission to the ICU:low,CVP1<8 mmHg;moderate,8 mmHg≤CVP1≤12 mmHg;and high,CVP1>12 mmHg.Perioperative fluid balance,28-day mortality,length of stay in the ICU,and hospitalization and surgical complications were compared across groups.Results:Of the 775 high-risk surgical patients enrolled in the study,228 were included in the analysis.Median(interquartile range)positive fluid balance during surgery was lowest in the low CVP1 group and highest in the high CVP1 group(low CVP1:770[410,1205]mL;moderate CVP1:1070[685,1500]mL;high CVP1:1570[1008,2000]mL;all P<0.001).The volume of positive fluid balance during the perioperative period was correlated with CVP1(r=0.336,P<0.001).The partial arterial pressure of oxygen(PaO 2)/fraction of inspired oxygen(FiO 2)ratio was significantly lower in the high CVP1 group than in the low and moderate CVP1 groups(low CVP1:400.0[299.5,443.3]mmHg;moderate CVP1:362.5[330.0,434.9]mmHg;high CVP1:335.3[254.0,363.5]mmHg;all P<0.001).The incidence of postoperative acute kidney injury(AKI)was lowest in the moderate CVP1 group(low CVP1:9.2%;moderate CVP1:2.7%;high CVP1:16.0%;P=0.007).The proportion of patients receiving renal replacement therapy was highest in the high CVP1 group(low CVP1:1.5%;moderate CVP1:0.9%;high CVP1:10.0%;P=0.014).Logistic regression analysis showed that intraoperative hypotension and CVP1>12 mmHg were risk factors for AKI within 72 h after surgery(adjusted odds ratio[aOR]=3.875,95%confidence interval[CI]:1.378–10.900,P=0.010 and aOR=1.147,95%CI:1.006–1.309,P=0.041).Conclusions:CVP that is either too high or too low increases the incidence of postoperative AKI.Sequential fluid therapy based on CVP after patients are transferred to the ICU post-surgery does not reduce the risk of organ dysfunction caused by an excessive amount of intraoperative fluid.However,CVP can be used as a safety limit indicator for perioperative fluid management in high-risk surgical patients. | Jiafang Wu Jun Li Han Chen Xiuling Shang Rongguo Yu | 2023 | Journal of Intensive Medicine2023，3，2： | 0 |
| 7 | Discrimination of marine algal taxonomic groups based on fluorescence excitation emission matrix, parallel factor analysis and CHEMTAX显示文摘An in vivo three-dimensional fluorescence method for the determination of algae community structure was developed by parallel factor analysis(PARAFAC) and CHEMTAX. The PARAFAC model was applied to fluorescence excitation-emission matrix(EEM) of 60 algae species belonging to five divisions and 11 fluorescent components were identified according to the residual sum of squares and specificity of the composition profiles of fluorescent. By the 11 fluorescent components, the algae species at different growth stages were classified correctly at the division level using Bayesian discriminant analysis(BDA). Then the reference fluorescent component ratio matrix was constructed for CHEMTAX, and the EEM–PARAFAC–CHEMTAX method was developed to differentiate algae taxonomic groups. The correct discrimination ratios(CDRs) when the fluorometric method was used for single-species samples were 100% at the division level, except for Bacillariophyta with a CDR of 95.6%. The CDRs for the mixtures were above 94.0% for the dominant algae species and above 87.0% for the subdominant algae species. However, the CDRs of the subdominant algae species were too low to be unreliable when the relative abundance estimated was less than 15.0%. The fluorometric method was tested using the samples from the Jiaozhou Bay and the mesocosm experiments in the Xiaomai Island Bay in August 2007. The discrimination results of the dominant algae groups agreed with microscopy cell counts, as well as the subdominant algae groups of which the estimated relative abundance was above 15.0%. This technique would be of great aid when low-cost and rapid analysis is needed for samples in a large batch. The fluorometric technique has the ability to correctly identify dominant species with proper abundance both in vivo and in situ. | CHEN Xiaona SU Rongguo BAI Ying SHI Xiaoyong YANG Rujun | 2014 | Acta Oceanologica Sinica2014，33，12： | 0 |
| 8 | The Generic Annular Bucket Histogram for Estimating the Selectivity of Spatial Selection and Spatial Join显示文摘Selectivity estimation is crucial for query optimizers choosing an optimal spatial execution plan in a spatial database management system.This paper presents an Annular Bucket spatial histogram(AB histogram)that can estimate the selectivity in finer spatial selection and spatial join operations even when the spatial query has more operators or more joins.The AB histogram is represented as a set of bucket-range,bucket-count value pairs.The bucket-range often covers an annular region like a sin-gle-cell-sized photo frame.The bucket-count is the number of objects whose Minimum Bounding Rectangles(MBRs)fall between outer rectangle and inner rectangle of the bucket-range.Assuming that all MBRs in each a bucket distribute evenly,for every buck-et,we can obtain serial probabilities that satisfy a certain spatial selection or join conditions from the operations' semantics and the spatial relations between every bucket-range and query ranges.Thus,according to some probability theories,spatial selection or join selectivity can be estimated by the every bucket-count and its probabilities.This paper also shows a way to generate an updated AB histogram from an original AB histogram and those probabilities.Our tests show that the AB histogram not only supports the selectivity estimation of spatial selection or spatial join with 'disjoint','intersect','within','contains',and 'overlap' operators but also provides an approach to generate a reliable updated histogram whose spatial distribution is close to the distribution of ac-tual query result. | Changxiu Cheng Chenghu Zhou Rongguo Chen | 2011 | Geo-Spatial Information Science2011，14，4： | 0 |
| 9 | Risk factors for disease severity in COVID-19 patients: A single-center retrospective study显示文摘Background:The outbreak of coronavirus disease 2019(COVID-19)has posed a huge threat to human health.However,little is known regarding the risk factors associated with COVID-19 severity.We aimed to explore early-stage disease risk factors associated with eventual disease severity.Methods:This study enrolled 486 hospitalized,non-intensive care unit(ICU)-admitted adult patients with COVID-19(age≥18 years)treated at Wuhan Jinyintan Hospital,who were divided into three groups according to disease severity.The demographic,clinical,and laboratory data at admission and clinical outcomes were compared among severity groups,and the risk factors for disease severity were identified by multiple regression analysis.Results:Of 486 patients with COVID-19,405(83.33%)were discharged,33(6.71%)died outside of the ICU,and 48(7.20%)were still being treated in the ICU by the time the study period ended.Significant differences in age,lymphocyte counts,and the levels of procalcitonin,aspartate aminotransferase,and D-dimer(P<0.001 for all)among the three groups.Further analysis showed that older age,decreased lymphocyte counts,and increased procalcitonin,aspartate aminotransferase,and D-dimer levels were significantly associated with disease progression.Conclusion:Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)may impair the immune system,the blood coagulation system,and hepatic and cardiac function.Some clinical characteristics and laboratory findings can help identify patients with a high risk of disease severity,which can be significant for appropriate resource allocation during the COVID-19 pandemic. | Jingqing Xu Yanping Cai Min Li Qing Li Yingrui Zhang Ying Jiang Wanli Yan Xuemei Chen Hongxuan Zhang Zhaonan Zeng Fayang Lian Xiuling Shang Rongguo Yu | 2021 | Journal of Intensive Medicine2021，1，2： | 0 |
| 10 | High-frequency characterization of an optical phase modulator with phase modulation-to-intensity modulation conversion in dispersive fibers显示文摘We propose a new method for characterizing optical phase modulators based on phase modulation-to-intensity modulation (PM-to-IM) conversion in dispersive fibers.The fiber dispersion spectrally alters the relative phasing of the phase-modulated signal and leads to the PM-to-IM conversion,which is extended to measure the modulation efficiency of optical phase modulators.In the demonstration,the frequency-dependent modulation index and half-wave voltage are experimentally measured for a commercial phase modulator.Compared with conventional methods,the proposed method works without the restriction of small-signal operations,and allows swept-frequency measurement with high resolution and accuracy by using a vector network analyzer. | ZHANG ShangJian LU RongGuo CHEN DeJun LIU Shuang LIU Yong | 2012 | Chinese Science Bulletin2012，57，22： | 0 |
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