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Causal Analysis of Futures Sugar Prices in Zhengzhou

Acta Mathematicae Applicatae Sinica 2012年第1期28卷 39-48页

作者： Fang WANG Xing-wei TONG Jing XU jian-ping chen School of Mathematical Science Beijing Normal UniversityBeijing 100875China School of Information Technology and Management Engineering University of International Business and EconomicsBeijing 100029China China International Science and Technology Convention Center No.12 Yumin RoadChaoyang DistrictBeijing 100029China

In this paper, we are interested in investigating the causal relationships among futures sugar prices in the Zhengzhou futures exchange market （ZF）, the spot sugar prices in Zhengzhou （ZS） and the futures sugar prices in New York futures exchange market （NF）. A useful tool called Bayesian network is introduced to analyze the problem. Since there are only three variables in our Bayesian network, the algorithm is straightforward： we display all the 25 possible network structures and adopt certain scoring metrics to evaluate them. We applied five different scoring metrics in total. Firstly, for each metric, we obtained 24 scores, each calculated from one of the 24 possible structures i.e. a Directed Acyclic Graph （DAG）. Then we eliminated the network structure which represents the independence of the three variables according to our prior knowledge concerning the futures sugar market. After that, the optimal network structure which implies the causal relationships was selected according to the corresponding scoring metric. Finally, after comparing the results from different scoring metrics, we obtained the relatively affirmative conclusion that ZS causes ZF from both the Bayesian Dirichlet （BD） metric, Bayesian Dirichlet-Akaike Information Criterion （BD-AIC） metric, Bayesian Dirichlet-Bayesian Information Criterion （BD-BIC） metric and Bayesian Information Criterion （BIC） metric. The conclusions that NF causes ZF and ZF causes ZS from the Akaike Information Criterion （AIC） metric and ZF causes ZS from the BIC metric were useful and significant to our investigation.

关键词： causal relationship Bayesian network BD metric AIC metric BIC metric

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Learning Dynamic Causal Relationships Among Sugar Prices

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Acta Mathematicae Applicatae Sinica 2017年第3期33卷 809-818页

作者： Jing XU Xing-wei TONG Fang WANG jian-ping chen School of Statistics University of International Business and EconomicsBeijing 100029China School of Statistics Beijing Normal UniversityBeijing 100875China COFCO Tunhe Co. LtdUrumqiXinjiang 830000China

In this paper, we are interested in exploring the dynamic causal relationships among two sets of three variables in different quarters. One set is futures sugar closing price in Zhengzhou futures exchange market （ZC）, spot sugar price in Zhengzhou （ZS） and futures sugar closing price in New York futures exchange market（NC） and the other includes futures sugar opening price in Zhengzhou （ZO）, ZS and NC. For each quarter, we first use Bayesian model selection to obtain the optimal causal graph with the highest BD scores and then use Bayesian model averaging approach to explore the causal relationship between every two variables. From the real data analysis, the two conclusions almost coincide, which shows that the two methods are practical.

关键词： Bayesian Network dynamic causal relationships Bayesian model selection Bayesian model averaging

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High laser damage threshold coatings and damage testing technology

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光学精密工程 2005年第4期13卷 500-504页

作者： MA ping HU jian-ping chen Song-lin TANG Ming WANG Zhen LI Wei XU Qiao chengdu Fine Optical Engineering Research Center Chengdu 610041China

The laser-induced damage threshold(LIDT) of optical coating is a limited factor for development of a high peak power laser. The automatic damage testing facility was built to determine the LIDT of optics at 1 064 nm and 355 nm.. The cleanning and processing procedure of the substrate and coating technique were improved, and the damage resistance of high-reflective coating at 1 064 nm was increased.

关键词：激光涂覆技术 LIDT 自动机械光学仪器激光仪器

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Identification of salivary proteins in the whitefly Bemisia tabaci by transcriptomic and LC-MS/MS analyses

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Insect Science 2021年第5期28卷 1369-1381页

作者： Hai-jian Huang Zhuang-Xin Ye Gang Lu Chuan-Xi Zhang jian-ping chen Jun-Min Li State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Plant VirologyNingbo UniversityNingboZhejiang315211.China

The whitefly Bemisia tabaci is a notorious agricultural pest of many crops *** it is thought that *** secretes saliva into the host plant to counter plant defenses,knowledge on the whitefly salivary proteome is ***,we characterized the gene/protein repertoires of *** salivary glands and secreted saliva by transcriptomic and liquid chromatography tandem mass spectroscopy analyses.A total of 698 salivary gland-enriched unigenes and 171 salivary proteins were *** analysis between the *** salivary proteins and those of different arthropod species revealed numerous similarities in proteins associated with binding,hydrolysis,and oxidation-reduction,which demonstrates a degree of conservation across herbivorous *** were 74 proteins only identified in *** saliva,of which 34 were *** addition,13 salivary proteins,of which I1 were ***-specific,were differentially regulated when *** fed on different *** results provide a good resource for future functional studies of whitefly salivary effectors,and might be useful in pest management.

关键词： Bemisia tabaci proteome salivary protein species-specific transcriptome

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Intra-continental deformation and tectonic evolution of the West Junggar Orogenic Belt,Central Asia:Evidence from remote sensing and structural geological analyses

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Geoscience Frontiers 2020年第2期11卷 651-663页

作者： Wei-Cui Ding Ting-Dong Li Xuan-Hua chen jian-ping chen Sheng-Lin Xu Yi-ping Zhang Bing Li Qiang Yang School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China SinoProbe Center Chinese Academy of Geological Sciences and China Geological SurveyBeijing 100037China Center for Hydrogeology and Environmental Geology CGSBaodingHebei 071051China

The West Junggar Orogenic Belt(WJOB)in northwestern Xinjiang,China,is located in the core of the western part of the Central Asian Orogenic Belt(CAOB).It has suffered two stage tectonic evolutions in Phanerozoic,before and after the ocean–continental conversion in Late *** later on intracontinental deformation,characterized by the development of the NE-trending West Junggar sinistral strike-slip fault system(WJFS)since Late Carboniferous and Early Permian,and the NW-trending Chingiz-Junggar dextral strike-slip fault(CJF)in Mesozoic and Cenozoic,has an important significance for the tectonic evolution of the WJOB and the *** this paper,we conduct geometric and kinematic analyses of the WJOB,based on field geological survey and structural interpretation of remote sensing image *** some piercing points such as truncated plutons and anticlines,an average magnitude of^73 km for the left-lateral strike-slip is calculated for the Darabut Fault,a major fault of the *** partial of the displacement should be accommodated by strike-slip fault-related folds developed during the strike-slip *** and curved faults,asymmetrical folds,and irregular contribution of ultramafic bodies,implies potential opposite vertical rotation of the Miao’ergou and the Akebasitao batholiths,resulted from the sinistral strike-slipping along the Darabut *** to conjugate shearing set of the sinistral WJFS and the dextral CJF since Early Mesozoic,superimposed folds formed with N–S convergence in southwestern part of the WJOB.

关键词： Remote sensing Structural analysis Strike-slip fault system Darabut fault West Junggar Central Asian orogenic belt

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Fascin promotes the motility and invasiveness of pancreatic cancer cells

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World Journal of Gastroenterology 2011年第40期17卷 4470-4478页

作者： Yan-Feng Xu Shuang-Ni Yu Zhao-Hui Lu jian-ping Liu Jie chen Department of Pathology Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Tsinghua University Beijing 100730 China

AIM:To explore the role of actin-bundling protein, fascin during the progression of pancreatic cancer. METHODS:The plasmid expressing human fascin-1 was stably transfected into the pancreatic cancer cell line MIA PaCa-2. The proliferation, cell cycle, motility, scattering, invasiveness and organization of the actin filament system in fascin-transfected MIA PaCa-2 cells and control non-transfected cells were determined. RESULTS:Heterogeneous overexpression of fascin markedly enhanced the motility, scattering, and inva-siveness of MIA PaCa-2 cells. However, overexpression of fascin had minimal effect on MIA PaCa-2 cell pro-liferation and cell cycle. In addition, cell morphology and organization of the actin filament system were distinctly altered in fascin overexpressed cells. When transplanted into BALB/c-nu mice, fascin-transfected pancreatic cancer cells developed solid tumors at a slightly slower rate, but these tumors displayed more aggressive behavior in comparison with control tumors. CONCLUSION: Fascin promotes pancreatic cancer cell migration, invasion and scattering, thus contributes to the aggressive behavior of pancreatic cancer cells.

关键词： Fascin Invasiveness Motility Pancreaticcancer

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Chitin synthase 1 and five cuticle protein genes are involved in serosal cuticle formation during early embryogenesis to enhance eggshells in Nilaparvata lugens

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Insect Science 2022年第2期29卷 363-378页

作者： Jia-Bao Lu jian-Sheng Guo Xuan chen chen cheng Xu-Mei Luo Xiao-Ya Zhang Bernard Moussian jian-ping chen Jun-Min Li Chuan-Xi Zhang State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Plant VirologyNingbo UniversityNingboZhejiang ProvinceChina Institute of Insect Science Zhejiang UniversityHangzhouChina School of Medicine Zhejiang UniversityHangzhouChina UniversitéCôte d'Azur CNRSInsermInstitute of Biology ValroseNiceFrance

Many holo-and hemimetabolous insects enhance their eggshells during embryogenesis by forming a serosal cuticle(SC).To date,scholarly understanding of the SC composition and SC-related gene functions has been limited,especially for hemimetabolous *** this study,we initially performed transmission electron microscopic(TEM)observation and chitin staining of the SC in Nilaparvata lugens,a hemimetabolous rice pest known as the brown planthopper(BPH).We confirmed that the SC was a chitin-rich lamellar structure deposited gradually during the early *** RNA interference(RNAi)against Nilaparvata lugens chitin synthase 1(NlCHS1)in newly emerged and matured females resulted in decreases of egg hatchability by 100%and 76%,*** analyses revealed loss of the lamellar structure of the SC in dsNlCHS1-treated *** to temporal expression profiles,five cuticle protein coding genes,NlugCpr1/2/3/8/90,were specifically or highly expressed during the SC formation period,and NlugCpr1/2/3/90 were further detected in 72 h eggshells extract by ultra-performance liquid chromatography-tandem mass spectrometry/mass ***2/3/90 were likely three SC-specific cuticle *** observations of the SC following parental RNAi against NlugCpr1/2/3/8/90 demonstrated that NlugCpr3/8/90 were essential for SC *** study provided an understanding of the SC formation process and SC-related cuticle proteins in BPHs,which offer potential targets for pest control in the egg stage as well.

关键词： chitin synthase 1 cuticle protein eggshell embryogenesis Nilaparvata lugens serosal cuticle

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Modified membrane fixation technique in a severe continuous horizontal bone defect:A case report

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World Journal of Clinical Cases 2022年第17期10卷 5789-5797页

作者： Lin-Hong Wang Yan Ruan Wen-Yan Zhao jian-ping chen Fan Yang Center for Plastic and Reconstructive Surgery Department of StomatologyZhejiang Provincial People's Hospital(Affiliated People's HospitalHangzhou Medical College)Hangzhou 310014Zhejiang ProvinceChina Graduate Department Bengbu Medical CollegeBengbu 233030Anhui ProvinceChina Department of Stomatology The First People's Hospital of Hangzhou Lin'an DistrictHangzhou 311399Zhejiang ProvinceChina

BACKGROUND Continuous severe horizontal bone defect is common in the aesthetic maxillary anterior area,and presents a major challenge in implant dentistry and requires predictable bone augmentation to increase the width of the alveolar *** SUMMARY A 24-year-old man,with a history of well-controlled IgA nephropathy,presented to the Dentistry Department of our hospital complaining of missing his right maxillary anterior teeth 1 mo *** horizontal alveolar bone defects at sites of teeth 12,13 and 14 were diagnosed.A modified guided bone regeneration surgical approach stabilizing the absorbable collagen membrane and particulate graft materials by periosteal diagonal mattress suture(PDMS)combined with four corner pins was used for this severe continuous horizontal bone *** outcome revealed that the newly formed alveolar ridge dimension increased from 0.72 mm to 11.55 mm horizontally 10 mo postoperatively,with no adverse *** implant surgery was successfully *** This case highlights that PDMS combined with four corner pins is feasible to maintain the space and stabilize the graft and membranes in severe continuous horizontal bone defect.

关键词： Horizontal bone defect Guided bone regeneration Periosteal diagonal mattress suture Pin Case report

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Pre-operative enhanced magnetic resonance imaging combined with clinical features predict early recurrence of hepatocellular carcinoma after radical resection

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World Journal of Gastrointestinal Oncology 2024年第4期16卷 1192-1203页

作者： jian-ping chen Ri-Hui Yang Tian-Hui Zhang Li-An Liao Yu-Ting Guan Hai-Yang Dai Department of Intervention Meizhou People’s HospitalMeizhou 514031Guangdong ProvinceChina Department of Medical Imaging Meizhou People’s HospitalMeizhou 514031Guangdong ProvinceChina Department of Medical Imaging Huizhou Municipal Central HospitalHuizhou 516001Guangdong ProvinceChina

BACKGROUND Indentifying predictive factors for postoperative recurrence of hepatocellular carcinoma(HCC)has great significance for patient *** To explore the value of gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid(Gd-EOB-DTPA)enhanced magnetic resonance imaging(MRI)combined with clinical features in predicting early recurrence of HCC after *** A total of 161 patients with pathologically confirmed HCC were *** patients were divided into early recurrence and non-early recurrence group based on the follow-up *** clinical,laboratory,pathological results and Gd-EOB-DTPA enhanced MRI imaging features were *** Of 161 patients,73 had early recurrence and 88 were had non-early *** analysis showed that patient age,gender,serum alpha-fetoprotein level,the Barcelona Clinic Liver Cancer stage,China liver cancer(CNLC)stage,microvascular invasion(MVI),pathological satellite focus,tumor size,tumor number,tumor boundary,tumor capsule,intratumoral necrosis,portal vein tumor thrombus,large vessel invasion,nonperipheral washout,peritumoral enhancement,hepatobiliary phase(HBP)/tumor signal intensity(SI)/peritumoral SI,HBP peritumoral low signal and peritumoral delay enhancement were significantly associated with early recurrence of HCC after *** logistic regression analysis showed that patient age,MVI,CNLC stage,tumor boundary and large vessel invasion were independent predictive *** data validation indicated that the area under the curve of the combined predictors was 0.861,suggesting that multivariate logistic regression was a reasonable predictive model for early recurrence of *** Gd-EOB-DTPA enhanced MRI combined with clinical features would help predicting the early recurrence of HCC after operation.

关键词： Hepatocellular carcinoma Enhanced magnetic resonance imaging Microvascular invasion Hepatobiliary phase Recurrence

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Evaluation of HCPTd_1, d_(14)-double passaged intervening chemotherapy protocol for hepatocellular carcinoma

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World Journal of Gastroenterology 2005年第33期11卷 5221-5225页

作者： Zhi-jian Yu Jia-Wei Yu Wei Cai Hong-Xin Yuan Xiao-Yan Li Ye Yuan jian-ping chen Xiao-Yin Wu Deng-Fu Yao Center of Oncology Affiliated Hospital of Nantong University Nantong 226001 Jiangsu Province China Department of Ultrasonography Affiliated Hospital of Nantong University Nantong 226001 Jiangsu Province China Research Center of Clinical Molecular Biology Affiliated Hospital of Nantong University Nantong 226001 Jiangsu Province China

AIM. To establish a kind of standardization of the clinical chemotherapeutic prototypes for unresectable hepatocellular carcinomas （HCC）. METHODS： 10-Hydroxycamptothecin （HCPT） was applied through transcatheter arterial embolization （TAE） to HCC patients who were categorized into three groups：（1） test group： treatment with HCPT twice （HCPT dl and 14） through TAE and portal venous embolization. （2） Control Ⅰ： treatment with anticancer drugs without HCPT. （3） Control Ⅱ： treatment with HCPT as a major component in anticancer drugs once （HCPT dl）. A set of comparisons between test groups and control Ⅰ and Ⅱ groups were performed before and after the treatment to study the effectiveness of each treatment, in terms of tumor volumes, dynamic variations in serum alpha-fetoprotein （AFP）, gamma-glutamyl transferase hepatoma-specific band （GGT-Ⅱ）, patient survival and adverse events. RESULTS： The general effectiveness rate of the test group reached 62.1% （72/116）, remarkably higher than that of control Ⅰ （32.1%, 40/124） and control Ⅱ （54.7%, 47/56）, （P〈0.01 and P〈0.05, respectively）. Especially, the reduction rate or disappearance of the portal vein tumor emboli was as high as 88.4% （61/69） in the test group, in contrast with 13.9% （10/72） in control Ⅰ and 35.9% （18/51） in control Ⅱ （P〈0.01 and P〈0.01, respectively）. After treatment, AFP decreased or turned to negative levels at 52.3% （34/65） in control Ⅰ, 67.3% （35/52） in control Ⅱ, and 96.8% （60/62） in the test group. Also GGT-Ⅱ declined or became negative at 37.8% （28/74） in control Ⅰ, 69.5% （57/82） in control Ⅱ, and 94.7% （89/94） in test group （P〈0.01 and P〈0.05, respectively）. CONCLUSION： We have designed a good protocol （test group） to treat HCC with excellent advantages of high efficiency, low cost, low toxicity and low adverse events and easy application. It could be recommended as one of the standardizations for HCC treatment in clinical practice.

关键词： Hydroxycamptothecin Transcatheter arterial embolization Portal venous embolization Hepatocellular carcinoma

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