Pseudorapidity Distributions of Charged Particles Produced in pp Collisions at the CERN LHC Energies

Jian-Xin Sun,Cai-Xing Tian,Er-Qin Wang,Fu-Hu Liu 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.5

The pseudorapidity distributions of charged particles produced in pp collisions at the CERN Large Hadron Collider (LHC) energies (0.9, 2.36, and 7 TeV) are studied by using the multisource thermal model. A group of extrapolated equations is used to determine various parameters. The calculated results are in agreement with the experimental data of the ALICE and CMS Collaborations at the LHC.

Outcomes Based on Risk Assessment of Anastomotic Leakage after Rectal Cancer Surgery

Gong, Jian-Ping,Yang, Liu,Huang, Xin-En,Sun, Bei-Cheng,Zhou, Jian-Nong,Yu, Dong-Sheng,Zhou, Xin,Li, Dong-Zheng,Guan, Xin,Wang, Dong-Feng Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.2

Purpose: Anastomotic leakage (AL) is associated with high morbidity and mortality, high reoperation rates, and increased hospital length of stay. Here we investigated the risk factors for AL after anterior resection for rectal cancer with a double stapling technique. Patients and Methods: Data for 460 patients who underwent primary anterior resection with a double stapling technique for rectal carcinoma at a single institution from 2003 to 2007 were prospectively collected. All patients experienced a total mesorectal excision (TME) operation. Clinical AL was defined as the presence of leakage signs and confirmed by diagnostic work-up according to ICD-9 codes 997.4, 567.22 (abdominopelvic abscess), and 569.81 (fistula of the intestine). Univariate and logistic regression analyses of 20 variables were undertaken to determine risk factors for AL. Survival was analysed using the Cox regression method. Results: AL was noted in 35 (7.6%) of 460 patients with rectal cancer. :Median age of the patients was 65 (50-74) and 161 (35%) were male. The diagnosis of AL was made between the 6th and 12th postoperative day (POD; mean 8th POD). After univariate and multivariate analysis, age (p=0.004), gender (p=0.007), tumor site (p<0.001), preoperative body mass index (EMI) (p<0.001), the reduction of TSGF on 5th POD less than 10U/ml (p=0.044) and the pH value of pelvic dranage less than or equal to 6.978 on 3rd POD (p<0.001) were selected as 6 independent risk factors for AL. It was shown that significant differences in survival of the patients were AL-related (p<0.001), high ASA score related (p=0.036), high-level EMI related (p=0.007) and advanced TNM stage related <p<0.001). Conclusions: AL after anterior resection for rectal carcinoma is related to advanced age, low tumor site, male sex, high preoperative EMI, low pH value of pelvic drainage on POD 3 and a significant reduction of TSGF on POD 5. In addition to their high risk of immediate postoperative morbidity and mortality, AL, worse physical status, severe obesity and advanced TNM stage have similarly negative impact on survival.

Influence mechanism of the compositions in coal-fired flue gas on Hg0 oxidation over commercial SCR catalyst

Jian Mei,Pengxiang Sun,Xin Xiao,Qi Zhang,Hui Zhao,Yongfu Guo,Shijian Yang 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.75 No.-

Optimizing the performance of commercial SCR catalyst (i.e., V2O5–WO3/TiO2) for Hg0 oxidationremained stagnant as the influence mechanism of the compositions offlue gas on Hg0 oxidation wasunclear. In this work, the mechanism of Hg0 oxidation and the influence mechanism of the compositionsofflue gas on Hg0 oxidation over V2O5–WO3/TiO2 were investigated. The reaction orders of Hg0 oxidationover V2O5–WO3/TiO2 in regard to both the concentrations of Hg0 and HCl in gas phase wereapproximately 0. Hence, Hg0 oxidation over V2O5–WO3/TiO2 primarily followed the Langmuir–Hinshelwood mechanism, and the elementary reactions of Hg0 oxidation primarily involved the physicaladsorption of Hg0, the formation of Cl* radial, and the reaction of physically adsorbed Hg0 and Cl* radial. SO2, NO, H2O, and NH3 not only restrained the Cl* radial formation but also disturbed the reaction ofphysically adsorbed Hg0 and Cl* radial. Meanwhile, the physical adsorption of Hg0 was restrained by bothH2O and NH3. Hence, Hg0 oxidation over V2O5–WO3/TiO2 was obviously restrained when SO2, NO, H2O,and NH3 were present influe gas.

Characterization of Inverter-Grid Interactions Using a Hardware-in-the-Loop System Test-Bed

Xin Chen,Jian Sun 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5

Renewable energy, such solar and wind, and other distributed generation (DG) resources are usually connected to the power grid through an inverter. As the penetration level of such inverter-based DG increases, their effects on, and interactions with the grid become an important concern for grid stability and power quality. In addition to the intermittent nature of renewable energy generation, which poses an challenge for system operation and power flow control, dynamics of the inverters have also been found to cause high-frequency stability problems. One particular issue is the harmonic resonance formed between the inverter output impedance and the grid impedance, which presents a system power quality problem and can lead to false tripping of inverters and other devices connected to the grid. This paper describes a hardware-in-the-loop system test-bed that has been developed to study such inverter-grid interactions and other system issues involving DG sources. Design considerations of the test-bed are presented along with its programming and control capabilities. Operation of grid-parallel inverters under different configurations and conditions of the test-bed is measured and their modes of interaction with the simulated grid are investigated. The effects of grid impedance and local loads on the stability and performance of grid-parallel inverters are also presented.

Analysis of Relationships Between Prethrombotic States and Cervical Cancer

Sun, You-Hong,Cui, Lin,Chen, Jue,Wang, Min,Liu, Jian-Jun,Liu, Xing-Xiang,Huang, Xin-En Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.14

Objective: To analyze the relationship between a prethrombotic state and the occurrence of thrombosis, as well as survival time for patients with cervical cancer. Methods: Patients with first diagnosis of cervical cancer were subgrouped according to FIGO staging, and two D-dimer levels were assessed. According to the results, patients are divided into an observation group (abnormal) and control group (normal). Results: For 106 patients with cervical cancer, 38 with abnormal D-dimer, the abnormal rate is 35.9%, of which stage I accounted for 6.5%, stage II 38.5%, stage III 50%, and stage IV 61.1% (p=0.013); The level of D-dimers in stageI wass $0.87{\pm}0.68ug/ml$, while in stage II it was $1.50{\pm}1.35ug/ml$, stage III $2.60{\pm}1.86ug/ml$ and stage IV $18.6{\pm}53.4ug/ml$ (P=0.031); after follow-up of patients for 2-30 months, the mortality of observation group is 21.1%, while for control group it was 2.94% (p <0.01). In the observation group, survival time was $15.1{\pm}5.8$ months, while for control group it was $21.0{\pm}5.4$ months, the difference between two groups being highly significant (p=0.000). Conclusion: There is a direct correlation between prethrombotic state and the grade malignancy of cervical cancer. The level is positively correlated with clinical stage, and is inversely related to survival time, so that a prethrombotic state could be used to predict the prognosis for patients with cervical cancer.

Depression and the Risk of Breast Cancer: A Meta-Analysis of Cohort Studies

Sun, Hui-Lian,Dong, Xiao-Xin,Cong, Ying-Jie,Gan, Yong,Deng, Jian,Cao, Shi-Yi,Lu, Zu-Xun Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.8

Background: Whether depression causes increased risk of the development of breast cancer has long been debated. We conducted an updated meta-analysis of cohort studies to assess the association between depression and risk of breast cancer. Materials and Methods: Relevant literature was searched from Medline, Embase, Web of Science (up to April 2014) as well as manual searches of reference lists of selected publications. Cohort studies on the association between depression and breast cancer were included. Data abstraction and quality assessment were conducted independently by two authors. Random-effect model was used to compute the pooled risk estimate. Visual inspection of a funnel plot, Begg rank correlation test and Egger linear regression test were used to evaluate the publication bias. Results: We identified eleven cohort studies (182,241 participants, 2,353 cases) with a follow-up duration ranging from 5 to 38 years. The pooled adjusted RR was 1.13(95% CI: 0.94 to 1.36; $I^2=67.2%$, p=0.001). The association between the risk of breast cancer and depression was consistent across subgroups. Visual inspection of funnel plot and Begg's and Egger's tests indicated no evidence of publication bias. Regarding limitations, a one-time assessment of depression with no measure of duration weakens the test of hypothesis. In addition, 8 different scales were used for the measurement of depression, potentially adding to the multiple conceptual problems concerned with the definition of depression. Conclusions: Available epidemiological evidence is insufficient to support a positive association between depression and breast cancer.

A Novel Alternaria Species Isolated from Peucedanum japonicum in Korea

( Jian Xin Deng ),( Hye Sun Cho ),( Narayan Chandra Paul ),( Hyang Burm Lee ),( Seung Hun Yu ) 한국균학회 2014 Mycobiology Vol.42 No.1

We isolated and examined a new Alternaria sp., which causes leaf spots on Peucedanum japonicum in Korea, by using molecular and morphological methods. Phylogenetic analysis based on a combined internal transcribed spacer region analysis andtwo protein-coding genes(gpd and Alt a1) demonstrated that the causal fungus was most closely related to A. cinerariae and A. sonchi, and relevant to A. brassicae. However, conidial morphology indicated that it is a novel species within the genus Alternaria, and therefore we have assigned the fungus a new name in this study.

Research Articles : First Report of Foliar Blight on Dendropanax morbifera Caused by Alternaria Panax

( Jian Xin Deng ),( Chang Sun Kim ),( Eun Sung Oh ),( Seung Hun Yu ) 한국균학회 2010 Mycobiology Vol.38 No.4

Leaf spot and blight disease was observed on two-year-old seedlings of Dendropanax morbifera (Korean name: Hwangchil tree) during July of 2008 in Jindo Island, Korea. Symptoms included yellow-brown to dark brown irregularly enlarged spots frequently located along the veins of leaves. The lesions were often surrounded by chlorotic haloes. Severe leaf blight and subsequent defoliation occurred when conditions favored disease outbreak. The causal organism of the disease was identified as Alternaria panax based on morphological characteristics and sequence analysis of the internal transcribed spacer region of rDNA. A. panax isolates induced leaf spots and blight symptoms not only on D. morbifera but also on the other members of Araliaceae tested. This is the first report of foliar blight caused by A. panax on D. morbifera.

Study of dry friction characteristics of silicon nitride full ceramic ball bearing with PEEK-based cage

Jian Sun,Zhe Zhang,Zhongxian Xia,Xin Fang,Renyun Guan,Guangxiang Zhang,Jinmei Yao 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.3

In order to investigate the influence of polyether ether ketone (PEEK) and its composite cage on the dry friction characteristicsof silicon nitride all-ceramic ball bearings, this paper firstly conducted a theoretical analysis of silicon nitride deep groove ballbearings subjected to radial load under dry friction conditions, and then conducted dry friction tests and simulation studieson PEEK, CF30 and PVX cage silicon nitride full ceramic ball bearings. The test results show that the temperature rise ofCF30 and PVX cage bearings is higher than that of PEEK cage bearings; the relationship between the root mean square valueof vibration of PEEK, CF30 and PVX cage bearings is PEEK cage bearings > CF30 cage bearings > PVX cage bearings; thesimulation model has good accuracy; Surface morphology analysis of the PVX cage bearing after the test show that thetransfer film has the effect of wear reduction and lubrication on the bearing. The results of the study have positive significancefor the research of transfer film lubricated bearings and the selection of cage materials.

How to Become an Elite Wushu (Kung-fu) Routine Athlete? Research on Development Factors

Jian Sun,Shali Hu,Xin Liu,May-Helen P. Stroemsmo 아시아건강운동학회 2019 Journal of Asian Society for Health & Exercise Vol.1 No.2

In order to know the developing pattern of the Wushu routine elite athletes, the research methods such as questionnaire, interview, case study and statistical analysis were used in this study. Through the study of the development of Chinese Wushu routine athletes, we found that there are five factors that influenced the developments of those athletes: the innate motivation, the external motivation, material guarantee, interpersonal environment and the choosing of opportunity. These five major key elements do not exist in isolation, but each take different proportion in different periods, and closely related and interact with each other. They have formed a dynamic open system.