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8篇 您的检索式:作者名="LI Boyong"
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1Responses of plant community to the linkages in plant-soil C:N:P stoichiometry during secondary succession of abandoned farmlands,China显示文摘Succession is one of the central themes of ecology;however,the relationship between aboveground plant communities and underground soils during secondary succession remains unclear.In this study,we investigated the composition of plant community,plant-soil C:N:P stoichiometry and their relationships during secondary succession after the abandonment of farmlands for 0,10,20,30,40 and 50 a in China,2016.Results showed that the composition of plant communities was most diverse in the farmlands after secondary succession for 20 and 50 a.Soil organic carbon and total nitrogen contents slightly decreased after secondary succession for 30 a,but both were significantly higher than those of control farmland(31.21%-139.10%and 24.24%-121.21%,respectively).Moreover,C:N ratios of soil and microbe greatly contributed to the changes in plant community composition during secondary succession of abandoned farmlands,explaining 35.70%of the total variation.Particularly,soil C:N ratio was significantly and positively related with the Shannon-Wiener index.This study provides the evidence of synchronous evolution between plant community and soil during secondary succession and C:N ratio is an important linkage between them.LIU Weichao FU Shuyue YAN Shengji REN Chengjie WU Shaojun DENG Jian LI Boyong HAN Xinhui YANG Gaihe 2020Journal of Arid Land2020,12,2:5
2Influence of Vehicle, Distant Topical Delivery, and Biotransformation on the Chemoreceptive Activity of Apigenin, a Plant Flavonoid, in Mouse Skin 显示文摘Boyong Li Heather Pinch Diane F B 1996Pharm Res1996,13,10:1
3Static Reserve Estimation Method Based on SEC Guidelines显示文摘Purpose and approach of the reserve estimation Since the three largest petroleum companies of China were successively listed in AMEX from the year 2000,the proved reserve owned by these companies have to be estimated annually under the SEC guidelines since the listed company will make its futureKang Zhiyong Zhao Zhigang Li Huanbao Zhang Boyong 2013China Oil & Gas2013,20,3:1
4Effect of Dietary Apigenin on Colonic Ornithine Decarboxylase Activity, Aberrant Crypt Foci Formation, and Tumorigenesis in Different Experimental Models显示文摘Angela Au Boyong Li Weiqun Wang Hemant Roy Ken Koehler Diane Birt 2006Nutrition and Cancer2006,,2:1
5Identification of Convective and Stratiform Clouds Based on the Improved DBSCAN Clustering Algorithm显示文摘A convective and stratiform cloud classification method for weather radar is proposed based on the density-based spatial clustering of applications with noise(DBSCAN)algorithm.To identify convective and stratiform clouds in different developmental phases,two-dimensional(2D)and three-dimensional(3D)models are proposed by applying reflectivity factors at 0.5°and at 0.5°,1.5°,and 2.4°elevation angles,respectively.According to the thresholds of the algorithm,which include echo intensity,the echo top height of 35 dBZ(ET),density threshold,andεneighborhood,cloud clusters can be marked into four types:deep-convective cloud(DCC),shallow-convective cloud(SCC),hybrid convective-stratiform cloud(HCS),and stratiform cloud(SFC)types.Each cloud cluster type is further identified as a core area and boundary area,which can provide more abundant cloud structure information.The algorithm is verified using the volume scan data observed with new-generation S-band weather radars in Nanjing,Xuzhou,and Qingdao.The results show that cloud clusters can be intuitively identified as core and boundary points,which change in area continuously during the process of convective evolution,by the improved DBSCAN algorithm.Therefore,the occurrence and disappearance of convective weather can be estimated in advance by observing the changes of the classification.Because density thresholds are different and multiple elevations are utilized in the 3D model,the identified echo types and areas are dissimilar between the 2D and 3D models.The 3D model identifies larger convective and stratiform clouds than the 2D model.However,the developing convective clouds of small areas at lower heights cannot be identified with the 3D model because they are covered by thick stratiform clouds.In addition,the 3D model can avoid the influence of the melting layer and better suggest convective clouds in the developmental stage.Yuanyuan ZUO Zhiqun HU Shujie YUAN Jiafeng ZHENG Xiaoyan YIN Boyong LI 2022Advances in Atmospheric Sciences2022,39,12:1
6The Content and Approaches of Human Resource Development in Impoverished Rural Regions in the Context of Targeted Poverty Alleviation显示文摘Poverty alleviation requires knowledge support. Targeted poverty alleviation, aiming to tackle rural poverty, needs to be supported by corresponding rural human resource development. Currently, China's human resource development in impoverished rural regions is faced with some major problems; a huge population distributed over a vast area, a lack of technological and cultural attainment, obsolete concepts, obsolete technical resources, and a significant gap between rural and urban education attainment. Rural human resource development, which is geared to targeted poverty alleviation, includes a variety of impoverished rural population-oriented trainings, such as intelligence development, skills training, modern professionalism &work attitude cultivation, physical & mental health education, as well as modern lifestyle & civilized manners guidance. Targeted poverty alleviation should be equipped with mechanisms of comprehensive layout & planning, coordinated advancement of development content and implementation, and a mechanism of organization & input. The approaches to the advancement of rural human resource development are enhancing basic education, building a system of vocational education and training, raising the social security level and improving the supporting mechanisms.Chen Boyong Tang Zhibin Guo Li 2018Contemporary Social Sciences2018,3,2:0
7Intra-abdominal hypertension is an independent cause of acute renal failure after orthotopic liver transplantation显示文摘An independent association between acute renal failure(ARF)and intra-abdominal hypertension(IAH)after liver transplantation has not been established previously.The aim of this retrospective study was to understand the role of IAH as an independent risk factor for ARF in the early postoperative period.This study involved 62 subjects who underwent liver transplantation.Intra-abdominal pressure(IAP)was measured in the first three days after surgery by using the urinary bladder technique.An IAP of at least 20 mmHg per day was defined as IAH.Clinical parameters between group IAH and group NO-IAH were compared in terms of the incidence of ARF,blood creatinine levels,blood urea nitrogen(BUN)levels,urine volume per hour and glomerular filtration gradient(GFG).Hemodynamic variations were recorded in the first three postoperative days between group ARF and group NO-ARF.The perioperative suspected risk factors of ARF were determined for statistical evaluation using correlation coefficients and logistic regression analysis.In group IAH,45.8%patients developed ARF as against 7.9%in group NO-IAH;GFG was significantly lower at 0–72 h after surgery;and blood creatinine levels,BUN levels,urine volume per hour were significantly different at 24–72 h after surgery compared with group NO-IAH.The patients with ARF were not significantly different from those without ARF in terms of central venous pressure,pulmonary artery pressure and mean arterial pressure(MAP)in the first three postoperative days despite a significant increase in heart rate at 24–72h after operation.Postoperative IAH,intraoperative MAP and intraoperative blood transfusion volume of more than 15 U were found to be independent risk factors for ARF.IAH impaired renal function and was an independent risk factor for ARF after liver transplantation.Routine measurement should be taken to monitor IAP every eight hours postoperatively.SHU Ming PENG Chenghong CHEN Hao SHEN Boyong ZHOU Guangwen SHEN Chuan LI Hongwei 2007Frontiers of Medicine2007,1,2:0
8CHINA'S REFORM OF THE LABOUR SYSTEM AND ITS TREND OF DEVELOPMENTLi Boyong Minister of Labour 1994外向经济1994,,12:0
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