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| 1 | Ecological stoichiometry of nitrogen, phosphorous, and sulfur in China's forests显示文摘Much attention has been paid to the stoichiometry of carbon(C), nitrogen(N), and phosphorus(P) because of their significance for plant growth and climate change. However, other nutrients, such as sulfur(S), are often ignored. In this study, we analyzed the stoichiometry of N, P, and S in leaves of 348 plant species in China's forests. The results show higher N content and higher molar ratios of N/P and P/S in Angiospermae than in Gymnospermae. At the family level, Ulmaceae absorbed more N and P from soils than other families, and Cupressaceae absorbed more S than other families. In addition,except for bamboo and other tropical forests, leaf N and P content of China's forests generally increased from low to middle latitudes and then slightly decreased or plateaued at high latitudes. Plant ecotypes, taxonomic groups, environmental conditions, atmospheric S precipitation, and soil-available N and P significantly affected the distribution and stoichiometry of leaf N, P, and S in China's forests.Our study indicates that China's forests are likely limited by P and S deficiencies which may increase in the future. | Yuntao Wu Hongyan Liu Zhaoliang Song Xiaomin Yang Zichuan Li Qian Hao Linan Liu | 2017 | Acta Geochimica2017，36，3： | 2 |
| 2 | Physical Characteristics of Welding Arc Ignition Process显示文摘The existing research of welding arc mainly focuses on the stable combustion state and the research on the mechanism of welding arc ignition process is quite lack.The tungsten inert gas(TIG) touch arc ignition process is observed via a high speed camera and the high time resolution spectral diagnosis system.The changing phenomenon of main ionized element provided the electrons in the arc ignition is found.The metallic element is the main contributor to provide the electrons at the beginning of the discharging,and then the excitated shielding gas element replaces the function of the metallic element.The electron density during the period of the arc ignition is calculated by the Stark-broadened lines of Hα.Through the discussion with the repeatability in relaxation phenomenon,the statistical regularity in the arc ignition process is analyzed.The similar rules as above are observed through the comparison with the laser-assisted arc ignition experiments and the metal inert gas(MIG) arc ignition experiments.This research is helpful to further understanding on the generation mechanism of welding arc ignition and also has a certain academic and practical significance on enriching the welding physical theoretical foundation and improving the precise monitoring on automatic arc welding process. | SHI Linan SONG Yonglun XIAO Tianjiao RAN Guowei | 2012 | Chinese Journal of Mechanical Engineering2012，25，4： | 1 |
| 3 | Study of water clusters in the n = 2- 34 size regime, based on the ABEEM/ MM model 显示文摘 | Qian Ping Lu Linan Song Wei | 2009 | Theor Chem Acc2009，123，： | 1 |
| 4 | Hypoxia due to cardiac arrest induces a time-dependent increase in serum amyloid β levels in humans显示文摘 | ZETTERBERG H MORTBERG E SONG Linan | | 0，，12： | 1 |
| 5 | Steered molecular dynamics simulations on the binding of the appendant structure and helix-b2 in domain - swapped human cystatin C dimer 显示文摘 | Shen Manli Guan Jing Xu Linan Yu Yuan He Jianwei Jones Gary W and Song Youtao | 2012 | Journal of Biomolecular Structure and Dynamics2012，30，6： | 1 |
| 6 | Analysis of Lymph Node Metastases of 1,526 Cases with Thoracic Esophageal and Cardiac Carcinomas: A Random Sampling Report froni the Fourth Hospital of Hebei Medical University from 1996 to 2004显示文摘OBJECTIVE To summarize the regular pattern and state oflymph node metastasis of patients with esophageal and cardiaccarcinomas,so as to analyze factors influencing lymph nodemetastasis.METHODS Clinical data collected from 1,526 thoracicesophageal and cardiac carcinoma patients who were admitted inthe Fourth Hospital of Hebei Medical University during a periodfrom January 1996 to December 2004,were randomly selectedand an Access Database of the patient's information was set up.Eight clinico-pathologic factors,including the patient's age,tumorlocation and size,pathological classification,the depth of tumorinvasion,vascular tumor embolus (VTE),the state of surroundingorgan encroachment and the status of tumor residues,wereidentified.A correlation between these factors and metastases wasstatistically analyzed using SPSS13.0 software.RESULTS Lymph node metastatic sites from esophagealcarcinomas included the thoracic and abdominal cavity.Lymphnode metastasis from the superior esophageal carcinomasmainly occurred in the neck and thoracic cavity.There was atwo-way lymph node metastasis in the patients with the middleesophageal carcinoma.The inferior esophageal carcinomas mainlymetastasized to the paraesophageal,paragastric cardia,and leftgastric artery lymph nodes.The rate and degree of the metastasisfrom the inferior esophageal carcinomas were significantly highercompared to those of the superior and the middle esophagealcarcinomas (P<0.0125).The degree of abdominal lymph node metastasis fromcarcinomas of the gastric cardia was significantly higher comparedwith that of esophageal carcinomas.In the group with carcinomaof the gastric cardia,the rate and degree of the lymph nodemetastases in the paragastric cardia and left gastric artery weresignificantly higher compared to the group with esophagealcarcinoma (P<0.05).Paraesophageal lymph node metastasis fromcarcinomas of the gastric cardia in the thoracic cavity frequentlyoccurred,too,and the degree of the metastasis was similar to thatof esophageal carcinoma.There was no significant difference inthe rate and degree of the paraesophageal lymph-node metastasisbetween the group with carcinoma of the gastric cardia comparedto those with esophageal carcinoma (P>0.05).Multifactoriallogistic regression analysis showed that the tumor size,depth oftumor encroachment,VTE,and tumor residues could all bringabout obvious impact on lymph-node metastases (P<0.05).CONCLUSION Lymph node metastasis from superioresophageal carcinomas mainly occurs in the neck and thoraciccavity.The middle esophageal carcinomas presented a two-waylymph-node metastasis (both the upwards and the downwards),and the lymph node metastasis from inferior esophagealcarcinomas mainly occurred in the thoracic and abdominal cavities.The metastases of carcinoma of the gastriccardia were most commonly found in the abdominalcavity,with frequent paraesophageal lymph-nodemetastasis.The sufficient attention should be paidto neck lymph node clearance in cases of esophagealcarcinoma.What is of the greatest concern is theclearance of the left gastric artery lymph nodes,andalso in cases of gastric cardia carcinoma,clearance,the paraesophageal lymph nodes.With an increasein the tumor size and depth of tumor encroachment,and occurrence of VTE and tumor residual cells,therisk of lymph node metastasis is significantly raised (P<0.05). | Wei Liu Xishan Hao Yong Chen Haixin Li Shijie Wang Peizhong Wang Hng Jin Liyun Guan Qian Fan Linan Song Yumin Ping Xianli Meng Rui Wang Junfeng Liu Xiaoling Wang | 2008 | Chinese Journal of Clinical Oncology2008，5，6： | 1 |
| 7 | Effects of topography and vegetation on distribution of rare earth elements in calcareous soils显示文摘This study investigated the impact of topography and vegetation on distribution of rare earth elements(REEs)in calcareous soils using methods of single extraction and mass balance calculation. The purposes of the study were to set a basis for further research on the biogeochemical REE cycle and to provide references for soil–water conservation and REE-containing fertilizer amendments. The results show a generally flat Post-Archean Average Australian Shale—normalized REE pattern for the studied calcareous soils. REE enrichment varied widely. The proportion of acidsoluble phases of heavy REEs was higher than that of light REEs. From top to bottom of the studied hills, dominant REE sources transitioned from limestone in-situ weathering to input from REE-containing phases(e.g., clay minerals,amorphous iron, REE-containing fluids). Our results indicate that the REE content of calcareous soils is mainly controlled by slope aspect, while the enrichment degree of REEs is related to geomorphological position and vegetation type.Furthermore, the proportion of acid-soluble phases of REEs is mainly controlled by geomorphological position. | Zhaoliang Song Yuntao Wu Xiaomin Yang Zijuan Xu Linan Liu Xiaodong Zhang Qian Hao Shaobo Sun Guilin Han Congqiang Liu | 2017 | Acta Geochimica2017，36，3： | 1 |
| 8 | Twin shear stress theory and its generalization显示文摘 | Yu Maohong He Linan Song Lingyu | 1985 | Scientia Sinica(Series A)1985，28，11： | 1 |
| 9 | Twin shear theory and its generalization 显示文摘 | Yu Maohong He Linan Song Lingyu | 1985 | Scientia Sinica (series A)1985，28，11： | 1 |
| 10 | Analysis of Clinicopathologic Features of Esophageal Carcinoma Patients Undergoing Surgery-a Report of 4,329 Cases显示文摘OBJECTIVE To investigate the clinicopathological features of esophageal carcinoma(EC)patients,and to analyze epidemiologic characteristics and the current situation of esophageal cancioma in the southern area of Hebei Province. METHODS A total of 4329 patients with esophageal cancinoma, undergoing surgery in the Fourth Hospital of Hebei Medical University during a period from January 1996 to December 2005, were selected.Collection and statistical analysis of the pathologic data were performed using a SAS 6.0 so ware package. RESULTS Over the past ten years,there has been a tendency for an increase in the mean age of EC onset(P<0.05),a downtrend in the percentage of squamous cancer(SqCa)(P<0.05)and an uptrend in the frequency of small cell carcinoma(P<0.05).In clinical stages,there was a drop in the percentage of Stage-II squamous EC patients(P<0.05),and an increase in that of Stage- IV patients(P<0.05).There were statistical differences in sex,age, pathologic types,depth of infiltration,ratio of stages and lymph node metastasis,etc.among the superior,middle and inferior segments of the EC diseased region(P<0.05). CONCLUSION It was relatively late for the EC patients from this area to see a doctor,resulting in a drop in the ratio of SqCa and an ascensus in that of small cell cancer.However,due to a low incidence of adenocarcinoma,no obvious ascending tendency was found in the frequency of this carcinoma over the past ten years. | Wei Liu Xishan Hao Ying Jin Haixin Li Linan Song Shijie Wang Peizhong Wang Yong Chen Qian Fan Liyun Guan Yumin Ping Xianli Meng Rui Wang Junfeng Liu Xiaoling Wang | 2008 | Chinese Journal of Clinical Oncology2008，5，2： | 0 |
| 11 | Fragments of Comet Hyakutake (C/1996 B2)显示文摘Several fragments of Comet Hyakutake were observed in March and April of 1996. This leads to the impression that the splitting of Comet Hyakutake on a small scale occurred frequently. Data analysis points to a rotation period of about 6 2 h if the fragments of April 11 are the condensations within a jet. | Daohan Chen Aidi Zhao Qindi Wu Yi Song Yixin Fan Shousheng Sun Yan Zhang Linan Sun | 1998 | Chinese Science Bulletin1998，43，2： | 0 |
| 12 | FRAGMENTS OF COMET HYAKUTAKE (C/1996 B2)显示文摘Several fragments of Comet Hyakutake were observed in March and April of 1996. This leads to the impression that the splitting of Comet Hyakutake on a small scale occurred frequently. Data analysis points to a rotation period of about 6.2h if the fragments of April 11 are the condensations within a jet. | Chen Daohan 1 Zhao Aidi 1 Wu Oindi 1 Song Yi 1 Fan Yixin 1 Sun Shousheng 2 Zhang Yan 2 Sun Linan 2 (1. Purple Mountain Observatory, Chinese Acadeniy of Sciences, Nanjing 210008) (2. Qingdao Station of Purple Mountain Observatory, Qingdao | 2000 | 中国科学院上海天文台年刊2000，，S1： | 0 |
| 13 | Analysis of Prognostic Factors of Esophageal and Gastric Cardiac Carcinoma Patients after Radical Surgery Using Cox Proportional Hazard Model-A Random Sampling Study from the Fourth Hospital of Hebei Medical University during the Period of 1996-2004显示文摘OBJECTIVE To retrospectively analyze clinical data of patientsfrom our hospital who underwent radical surgery for esophagealcarcinoma and for adenocarcinoma of the gastric cardia,as well asto investigate prognostic factors affecting the long-term survival ofthe patients.METHODS Data from the patients eligible for our study,admitted to the 4th Hospital of Hebei Medical University fromJanuary 1996 to December 2004,were randomized,and 12distinctive clinicopathologic factors influencing the survival rateof those who underwent radical surgery for esophageal carcinomaor carcinoma of the gastric cardia were collected.Univariate andmultivariate analysis of these individual variables were performedusing the Cox proportional hazard model.RESULTS It was shown by univariate analysis that age,tumorsize,pathologic type,lymph node status,TNM staging,depthof infiltration and encroachment into local organs,etc.,were thefactors that markedly influenced the prognosis of patients(P<0.01).Multivariate analysis showed that pathologic type,numberof the lymph node metastases,involvement of local organs,andTNM staging were independent prognostic factors(P<0.05).CONCLUSION The independent factors influencing theprognosis of patients with esophageal cancer and carcinoma ofthe gastric cardia include pathologic type,number of lymph nodemetastases,involvement of local organs and TNM staging.Themain prognostic factors affecting the patient's survival are patientage,tumor size and depth of infiltration.In addition,patients withinvolvement of the local organs have a worse prognosis,and theyshould be closely followed up. | Wei Liu Xishan Hao Qian Fan Peizhong Wang Haixin Li Linan Song Shijie Wang Ying Jin Yong Chen Liyun Guan Yumin Ping Xianli Meng Rui Wang Junfeng Liu Xiaoling Wang | 2009 | Clinical oncology and cancer resexreh2009，6，4： | 0 |
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