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Relationships Between Intensity Gradation and Evolution of Soil Erosion: A Case Study of Changting in Fujian Province, China

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Pedosphere 2012年第2期22卷 243-253页

作者： LIN Chen ZHOU Sheng-Lu wu shao-hua LIAO Fu-Qiang School of Geographic and Oceanographic Sciences Nanjing UniversityNanjing 210093(China) State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008(China) School of Geography and Environment Jiangxi Normal UniversityNanchang 330022(China)

Soil erosion gradation is a robust and objective quantitative indicator of soil erosion intensity. Recent applications of soil erosion gradation have focused on monitoring soil erosion with models or simulation of soil erosion through gradation trends. However, soil erosion simulation accuracy is generally being reduced due to the rare consideration of the relationship between soil erosion gradation and erosion evolution. In this study, we investigated different soil erosion intensity grades to demonstrate their sensitivity to types and rates of erosion. Specifically, the objective was to define the relationship between soil erosion gradation and soil erosion evolution in Changting, an undeveloped area in Fujian Province, China, for four time intervals (1975, 1990, 1999, and 2006). The time series of erosion gradation were developed by modeling analysis with integration of several erosion indicators, and the relationships between the erosion grades and evolution types and rates were quantified. Comparison of the collapsing forces with natural and restoring forces based on human activity demonstrated that there existed an obvious spatial uncertainty in the erosion evolution types, both positive and negative succession coexisted, and the evolution rates were mostly influenced by the force of policy orientation. The impacts of these driving forces were eventually reflected in the erosion intensity gradation and erosion evolution. The correlation between the negative succession rate and erosion intensity gradation was weak and showed a poor contribution to the average succession rate, while the negative correlation between the positive succession rate and erosion intensity gradation would be increasingly clear as time passed.

关键词： driving forces negative succession policy orientation positive succession time series

床旁多普勒超声引导下经皮扩张钳扩张气管切开术在神经重症监护病房重症患者中的应用分析

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生物医学工程与临床 2024年第2期28卷 210-214页

作者：刘亮宋丽平吴亚婷毋少华黄河三门峡医院神经内科河南三门峡472000 黄河三门峡医院眼科河南三门峡472000

目的探究床旁多普勒超声引导下经皮扩张钳扩张气管切开术(PDT)在神经重症监护病房(NCU)重症患者中的应用。方法选择黄河三门峡医院NCU收治的68例患者,其中男性47例,女性21例,年龄40~65岁,平均年龄53.04岁;身体质量指数(BMI)20~27 kg/m^(... 详细信息

目的探究床旁多普勒超声引导下经皮扩张钳扩张气管切开术(PDT)在神经重症监护病房(NCU)重症患者中的应用。方法选择黄河三门峡医院NCU收治的68例患者,其中男性47例,女性21例,年龄40~65岁,平均年龄53.04岁;身体质量指数(BMI)20~27 kg/m^(2),平均BMI 23.79 kg/m^(2);有吸烟史41例,饮酒史44例;重症颅脑损伤13例,高血压脑出血20例,蛛网膜下腔出血12例,其他23例。采用随机数字表法将68例患者分为2组,其中对照组(n=34)行PDT治疗,试验组(n=34)采用床旁多普勒超声引导下PDT治疗。比较两组手术情况、穿刺及气管插管情况及并发症。结果试验组出血量、手术时间少于对照组[(2.53±0.21)mL vs(3.29±0.46)mL,(10.25±2.06)min vs(11.31±2.18)min](P0.05)。两组术后并发症发生率比较,试验组低于对照组(5.88%vs 29.41%)(P<0.05)。结论床旁多普勒超声引导下PDT可显著缩短NCU重症患者手术时间、减少出血量,提升一针穿刺成功率与置管成功率,同时降低术后并发症发生风险,值得临床推广。

关键词：经皮扩张钳扩张气管切开术神经重症监护病房床旁多普勒超声

Spectral Response of Different Eroded Soils in Subtropical China: A Case Study in Changting County, China

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Journal of Mountain Science 2014年第3期11卷 697-707页

作者： LIN Chen ZHOU Sheng-lu wu shao-hua ZHU Qing DANG Qi State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Department of Land Resources and Tourism Sciences School of Geographic and Oceanographic Sciences Nanjing University State Key Laboratory of Soil and Sustainable Agriculture Nanjing Insti-tute of Soil Science Chinese Academy of Sciences

Hyper-spectral data is widely used to determine soil properties. However, few studies have explored the soil spectral characteristics as response to soil erosion. This study analysed the spectral response of different eroded soils in subtropical China, and then identify the spectral characteristics and soil properties that better discriminate softs with different erosion degrees. Two methods were compared： direct identification by inherent spectral characteristics and indirect identification by predictions of critical soft properties. Results showed that the spectral curves for different degrees of erosion were similar in morphology, while overall reflectance and characteristics of specific absorption peaks were different. When the first method is applied, some differences among different eroded groups were found by integration of associated indicators. However, the index of such indicators showed apparent mixing and crossover among different groups, which reduced the accuracy of identification. For the second method, the correlation between critical soil properties, such as soil organic matter （SOM）, iron and aluminium oxides and reflectance spectra, was analysed. The correlation coefficients for the moderate eroded group were primarily between -0.3 to -0.5, which were worse than the other twogroups. However, the maximum value of R2 was obtained as 0.86 and 0.94 for the non-apparent eroded and the severe group. Furthermore, these two groups also showed some differences in the spectral response of iron complex state （Fep）, Aluminium amorphous state （Alo） and the modelling results for soil organic matter （SOM）. The study proved that it is feasible to identify different degrees of soil erosion by hyperspectral data, and that indirect identification by modelling critical soil properties and reflectance spectra is much better than direct identification. These results indicate that hyper-spectral data may represent a promising tool in monitoring and modelling soil erosio

关键词： Soil erosion Erosion degree Hyper-spectral Aluminium oxides Iron oxide SOM

Soil Organic Carbon Transformation and Related Properties in Urban Soil Under Impervious Surfaces

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Pedosphere 2014年第1期24卷 56-64页

作者： WEI Zong-Qiang wu shao-hua ZHOU Sheng-Lu LI Jing-Tao ZHAO Qi-Guo School of Geographic and Oceanographic Science Nanjing University Institute of Soil Science Chinese Academy of Sciences

Installation of impervious surface in urban area prevents the exchange of material and energy between soil and other environmental counterparts,thereby resulting in negative effects on soil function and urban *** samples were collected at 0-20cm depth in Nanjing City,China,in which seven sites were selected for urban open soils,and fourteen sites with similar parent material were selected for the impervious-covered soils,to examine the effect of impervious surface on soil properties and microbial activities,and to determine the most important soil properties associated with soil organic carbon(SOC)transformation in the urban soils covered by impervious *** organic carbon and water-soluble organic carbon(WSOC)concentrations,potential carbon(C)and nitrogen(N)mineralization rates,basal respiration,and physicochemical properties with respect to C transformation were *** of impervious surface severely affected soil physicochemical properties and microbial activities,e.g.,it significantly decreased total N contents,potential C mineralization and basal respiration rate(P<0.01),while increased pH,clay and Olsen-P *** organic carbon in the sealed soils at 0-20 cm was 2.35 kg m^(-2),which was significantly lower than the value of 4.52 kg m^(-2)in the open soils(P<0.05).Canonical correlation analysis showed WSOC played a major role in determining SOC transformation in the impervious-covered soil,and it was highly correlated with total N content and potential C mineralization *** findings demonstrate that installation of impervious surface in urban area,which will result in decreases of SOC and total N concentrations and soil microbial activities,has certain negative consequences for soil fertility and long-term storage of SOC.

关键词： carbon mineralization microbial activity soil fertility soil sealing water-soluble organic carbon

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基于可视化的光学定心在线检测系统研究

光学与光电技术 2024年第5期22卷 38-44页

作者：龚云辉周旭环吴绍华王光伟朱俊张步华云南北方光学科技有限公司云南昆明650217

现有光学定心磨边机尚不具备在线测量口径参数的功能,而手工修磨易导致定位平台垂直度超差,光学元件的光学定心对中心偏、凹面口径精度的控制尤为重要.设计改造了一种光学定心可视化在线检测装置,通过增加在线测量口径及拖边进刀量计算... 详细信息

现有光学定心磨边机尚不具备在线测量口径参数的功能,而手工修磨易导致定位平台垂直度超差,光学元件的光学定心对中心偏、凹面口径精度的控制尤为重要.设计改造了一种光学定心可视化在线检测装置,通过增加在线测量口径及拖边进刀量计算功能,在定心磨边设备上设计安装了可视化检测装置,解决采用手工修改控制方式引起元件表面光洁度受损、定位平台的垂直度超差、口径超差问题.实测结果表明,零件偏心、垂直度与凹面口径测量精度达 0.01 mm,均满足光学加工实际应用要求.通过可视化光学定心检测系统在线测量,可一次装夹完成零件外圆与定位平台加工,提高光学元件凹面口径精度,减少手工修磨工序,提升产品合格率及加工效率,为光学加工的定心技术提供可靠、高效的解决方案.

关键词：光学元件光学定心可视化在线检测中心偏凹面口径

Special DNA Methylated Sites Between Haploid of Twin-Seedling and Its Hybrids in Rice(Oryza sativa)

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Rice science 2012年第2期19卷 94-99页

作者： wu shao-hua XUE Jing-jing ZHANG Hong-yu Xu Pei-zhou wu Xian-jun Rice Research Institute/Key Laboratory of Southwest Crop Genetic Resources and Improvement Ministry of EducationSichuanAgricultural UniversityChengdu 611130China

DNA methylation is one of the epigenetic phenomena which can be transferred to the offspring by cell division in the evolution of organisms. The epigenetic regulation accompanied by gene expression can be found directly in the phenotype of haploidy plants. DNA cytosine methylation at the 5＇-CpCpGpG sites of haploid, Shuhui 527, Shuhui 363 and their hybrids was analyzed by methylation sensitive amplification polymorphism （MSAP） method. There were 765 DNA methylated sites detected and the methylation level was lower in hybrids than parents. Meanwhile, the different bands between hybrids and parents were analyzed and two types of methylated sites were detected, of which one inherited from haploid, and the other did not. The biological functions of genes related to methylated sites involved in cell structure, metabolize and response factor. Therefore, DNA methylated modifications can activate and silence the genes and play an important role in plant growth, development and evolution.

关键词： twin-seedling rice haploid methylation sensitive amplification polymorphism DNA methylation

Genetic Analysis and Gene Mapping of Multi-tiller and Dwarf Mutant d63 in Rice

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Rice science 2013年第3期20卷 179-184页

作者： XUE Jing-jing wu shao-hua ZHANG Hong-yu XU Pei-zhou wu Xian-jun Rice Research Institute/Key Laboratory of Southwest Crop Genetic Resources and Improvement Ministry of EducationSichuan Agricultural University Tropical Crops Genetic Resources Institute of Chinese Academy of Tropical Agriculture Sciences Rubber Research Institute of Chinese Academy of Tropical Agriculture Sciences

A spontaneous mutation, tentatively named d63, was derived from the twin-seedling progenies of rice crossed by diploid SARIII and Minghui 63. Compared with wild-type plants, the d63 mutant showed multiple abnormal phenotypes, such as dwarfism, more tillers, smaller flag leaf and reduced seed-setting rate and 1000-grain weight. In this study, two F2 populations were developed by crossing between d63 and Nipponbare, d63 and 93-11. Genetic analysis indicated that d63 was controlled by a single recessive gene, which was located on the short arm of chromosome 8, within the genetic distance of 0.40 cM from RM22195. Hence, D63 might be a new gene as there are no dwarf genes reported on the short arm of chromosome 8.

关键词： rice multi-tiller and dwarf mutant genetic analysis gene mapping

Mirizzi syndrome:Problems and strategies

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Hepatobiliary & Pancreatic Diseases International 2024年第3期23卷 234-240页

作者： Jun wu Shuang-Yong Cai Xu-Liang Chen Zhi-Tao Chen shao-hua Shi Department of Hepatobiliary and Pancreatic Surgery People’s Hospital of Jiulongpo DistrictChongqing 400050China Department of Hepatobiliary and Pancreatic Surgery Shulan(Hangzhou)Hospital Affiliated to Zhejiang Shuren University Shulan International Medical CollegeHangzhou 310003China

Mirizzi syndrome is a serious complication of gallstone *** is caused by the impacted stones in the gallbladder neck or cystic *** of the features of Mirizzi syndrome is severe inflammation or dense fibrosis at the Calot’s *** our clinical practice,bile duct,branches of right hepatic artery and right portal vein clinging to gallbladder infundibulum are often observed due to gallbladder infundibulum adhered to right hepatic *** intraoperative damage of branches of right hepatic artery occurs more easily than that of bile duct,all of which are hidden pitfalls for *** resonance cholangiopancreatography(MRCP)and endoscopic retrograde cholangiopancreatography(ERCP)are the preferable tools for the diagnosis of Mirizzi *** cholecystectomy in Mirizzi syndrome is easy to damage branches of right hepatic artery and bile duct due to gallbladder infundibulum adhered to right hepatic *** cholecystectomy is an easy,safe and definitive approach to Mirizzi *** combined with the application of ERCP,a laparoscopic management of Mirizzi syndrome by well-trained surgeons is feasible and *** objective of this review was to highlight its existing problems:(1)low preoperative diagnostic rate,(2)easy to damage bile duct and branches of right hepatic artery,and(3)high concomitant gallbladder ***,the review aimed to discuss the possible therapeutic strategies:(1)to enhance its preoperative recognition by imaging findings,and(2)to avoid potential pitfalls during surgery.

关键词： Mirizzi syndrome Bile duct injury Artery injury Surgical treatment Subtotal cholecystectomy

肠内营养治疗对重症脑卒中患者炎症应激程度的影响及肠道菌群失调的影响因素

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现代生物医学进展 2024年第12期24卷 2310-2313,2278页

作者：席俊男毋少华薛惠元冯松松王娟陈丽薇河南科技大学附属黄河医院神经内科河南三门峡472000

目的:分析肠内营养治疗对重症脑卒中患者炎症应激程度的影响及肠道菌群失调的影响因素。方法:选择自2022年1月至2023年5月收治的82例重症脑卒中患者,分为对照组和观察组,各41例。对照组予以常规治疗,观察组加用肠内营养治疗。比较两组... 详细信息

目的:分析肠内营养治疗对重症脑卒中患者炎症应激程度的影响及肠道菌群失调的影响因素。方法:选择自2022年1月至2023年5月收治的82例重症脑卒中患者,分为对照组和观察组,各41例。对照组予以常规治疗,观察组加用肠内营养治疗。比较两组治疗前后的炎症反应指标、应激反应指标、APACHEⅡ评分、GCS评分,使用因素分析发生肠道菌群失调的影响因素。结果:治疗后,与对照组比较:观察组C-反应蛋白(hs-CRP)、白介素-2(IL-2)、IL-6、肿瘤坏死因子-α(TNF-α)、去甲肾上腺素(NE)、皮质醇(COR)及APACHEⅡ评分表达水平低,对氧磷酶-1(PON-1)、谷胱甘肽过氧化(GSH-Px)、GCS评分高(P<0.05);经因素分析,内毒素、高血压和糖尿病均是重症脑卒中患者发生肠道菌群失调的独立危险因素(P<0.05)。结论:肠内营养治疗能有效降低重症脑卒中患者的炎症应激程度,进而增加患者的临床获益,而患者发生肠道菌群失调与高血压、糖尿病和高水平内毒素有关。

关键词：重症脑卒中肠内营养炎症应激肠道菌群失调影响因素