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Search Results: 1 - 10 of 119817 matches for " Jundong Wang "
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The Mechanism of Voltage Instability Analysis Considering Load Characteristic  [PDF]
Jundong Duan, Jiaxing Huang
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B283
Abstract:

Load characteristics are the main factor to affect voltage stability. In addition, load modeling reflecting the actual load characteristics has been a well—known difficult problem and unsolved so far, It is mainly due to the fact that the load composition, amount and characteristics are always changing. This paper introduces the slip into the equivalent impedance load model to analyze load characteristic, the varying slip is employed to indicate time-varying load characteristic precisely, and considering the dissimilar load behaviors, discusses node voltage, power during the changes of load characteristic, obtains voltage inflexion and power inflexion, and then analyzes the mechanism of power system voltage instability based on static voltage stability region. An example indicates the feasibility of the method.

Systematic Review of Studies of Workplace Exposure to Environmental Tobacco Smoke and Lung Cancer Risk
Xinzhuo WANG,Yukun QIN,Jundong GU,Fengwei WANG
Chinese Journal of Lung Cancer , 2011,
Abstract: Background and objective It has been reported that there was a close relationship between lung cancer risk and environmental tobacco smoke at workplace. The aim of this study is to explore the relationship between workplace environmental tobacco smoke exposure and lung cancer risk among non-smoking subjects. Methods By searching Medline, CENTRAL (the Cochrane central register of controlledtrials), EMBASE, CBM, CNKI and VIP et al, we collected both domestic and overseas published documents on workplace environmental tobacco smoke exposure and lung cancer risk. Random or fixed effect models were applied to conduct systematic review on the study results, the combined odds ratio (OR) and the 95% confidence interval (CI) were calculated as well. Results 22 reports were included into the combined analysis, which indicated that 25% lung cancer risk was increased by exposing to workplace environment tobacco smoke (OR=1.25, 95%CI: 1.13-1.39, P < 0.001). For female the increased risk was 22% (OR=1.22, 95%CI: 1.05-1.42, P=0.011). For male the increased risk was 54%, but it does not reach the statistical significance (OR=1.54, 95%CI: 0.74-3.18, P=0.247). Conclusion Workplace environmental tobacco smoke exposure is an important risk factor of lung cancer risk among non-smoking subjects. Especially for non-smoking women who expose to workplace environment tobacco smoke have a close relationship with lung cancer.
The ring-substituted phthalocyanines and its metal complexes: Crystal structure of 1, 4,8, 11, 15, 18, 22, 25-octa-butoxyphthalocyani-natocopper(II)
Jinwan Cai,Jundong Wang,Jinling Huang,Naisheng Chen
Chinese Science Bulletin , 2002, DOI: 10.1360/02tb9147
Abstract: Crystal structure of 1, 4, 8, 11, 15, 18, 22, 25-octa-butoxyphthalocyaninatocopper (II) (1) was determined by X-ray diffraction methods. The crystal system is monoclinic, space group is P21/c, Z = 4, a = 1.3741(1) nm, b = 2.6737(1) nm, c = 1.6690(1) nm, β= 101.278(1)°. The steric congestion between the neighbouring butoxyl groups causes the distortion of the ring core of phthalocyanine (Pc) into a saddle shape conformation. In the crystal structure, molecules stack along a axis forming one-dimensional packing structure and there are two molecular overlap types which appear in turn with different distances between molecules, overlap area and angle.
The ring-substituted phthalocyanines and its metal complexes: Crystal structure of 1, 4,8, 11, 15, 18, 22, 25-octa-butoxyphthalocyani-natocopper(II)
The ring-substituted phthalo-cyanines and its metal com-plexes: Crystal structure of 1,4, 8,11,15,18,22,25-octa-butoxyphthalocyani-natocopper(Ⅱ)

CAI Jinwan,WANG Jundong,HUANG Jinling,CHEN Naisheng,

科学通报(英文版) , 2002,
Abstract: Crystal structure of 1, 4, 8, 11, 15, 18, 22, 25-octa-butoxyphthalocyaninatocopper (II) (1) was determined by X-ray diffraction methods. The crystal system is monoclinic, space group is P21/c, Z = 4, a = 1.3741(1) nm, b = 2.6737(1) nm, c = 1.6690(1) nm, β= 101.278(1)°. The steric congestion between the neighbouring butoxyl groups causes the distortion of the ring core of phthalocyanine (Pc) into a saddle shape conformation. In the crystal structure, molecules stack along a axis forming one-dimensional packing structure and there are two molecular overlap types which appear in turn with different distances between molecules, overlap area and angle.
Systematic Review of the Relationship between Family History of Lung Cancer and Lung Cancer Risk
Feng HUA,Jing WANG,Jundong GU,Shujun LI
Chinese Journal of Lung Cancer , 2010,
Abstract: Background and objective Fourty years ago, Tokuhata and Lilienfeld provided the first epidemiologic evidence of familial aggregation of lung cancer. Familial aggregation and increased familial risk for lung cancer have been reported in several studies, subsequently. But the results are not consistent with each other. The aim of this study is to further explore the relationship between family history of lung cancer and lung cancer risk. Methods By searching PubMed, CENTRAL, CBM, CNKI and VIP, we collected both domestic and overseas published documents before November, 2009 on family history of lung cancer and lung cancer risk. RevMan version 4.2 was used to perform meta-analysis on the case-control study results, the combined odds ratio (OR) and the 95% confidence interval (CI) were calculated as well. Results Twentyeight publications were included into the combined analysis, which indicated that the lung cancer risk of the probands’ firstdegree relatives was 1.88 times higher than that of their controls’ (P<0.001). In the sub-study, compared with the controls’ father mother and siblings, the OR of the probands’ father mother and siblings was 1.62 (P<0.001), 1.96 (P<0.001) and 1.92 (P<0.001), respectively. For smoking status, lung cancer risk in first-degree relatives of smoking probands was 1.73 (P<0.001) times higher than that of their corresponding controls’. And for non-smoking subjects the lung cancer risk was 1.42 (P=0.02) times higher in proboands’ first-degree relatives. For gender categories, lung cancer risk in first-degree relatives of female probands was 1.89 (P<0.001) times higher than that of their corresponding controls’. And for male subjects, the lung cancer risk was 1.99 (P<0.001) times higher in proboands’ first-degree relatives. Conclusion Lung cancer risk was increased in probands’ first-degree relatives, and obvious familial aggregation of lung cancer was observed in this study.
Diagnosis Value of the Detection of CYFRA21-1 in Non-small Cell Lung Cancer
Jundong GU,Xinzhuo WANG,Hui ZHAO,Siwei ZHU
Chinese Journal of Lung Cancer , 2010,
Abstract: Background and objective Cytokeratin-19 fragment (CYFRA21-1) is a soluble protein in serum, and may be a useful circulating tumor marker. The aim of this study is to investigate the diagnostic value of the peripheral blood CYFRA21-1 in non-small cell lung cancer (NSCLC). Methods The levels of peripheral blood CYFRA21-1 were detected in 107 patients with NSCLC and 51 patients with benign pulmonary diseases by enzyme linked immunosorbent assay, and ROC curve was used to analyse the results. Results Singificant difference of peripheral blood CYFRA21-1 levels was detected between the NSCLC group and benign pulmonary disease group (χ2=47.343, P < 0.001). At the threshold of 3.3 ng/mL, sensitivity and specificity of CYFRA21-1 as a serologic marker were 74.77% and 76.47%, respectively for any cancer. ROC curve showed that the under-curve area (AUC) of CYFRA21-1 was 0.813 9. There was no significant difference of CYFRA21-1 between subtypes of NSCLC (χ2=0.450, P=0.799). The peripheral blood CYFRA21-1 level was elevated significantly in the patients with extensive disease (IIIb, IV) compared with patients with limited disase (I, II, IIIb) (χ2=7.057, P=0.008). Conclusion As a tumor marker CYFRA21-1 has relative high sensitivity and specificity for the diagnosis of NSCLC. Elevated peripheral blood CYFRA 21-1 levels were usually indicated extensive disease of NSCLC.
A meta Analysis on the Relationship between Myeloperoxidase G-463A Genetic Polymorphisms and Lung Cancer Susceptibility
Feng HUA,Jing WANG,Jundong GU,Shujun LI
Chinese Journal of Lung Cancer , 2010,
Abstract: Background and objective The relationship between myeloperoxidase G-463A genetic polymorphisms and lung cancer susceptibility has been studied extensively. However, the outcomes are not consistent. The aim of this study is to evaluate the relationship between myeloperoxidase genetic polymorphisms and lung cancer susceptibility by meta analysis. Methods Documents published were retrieved through databases associated with the study. Taking into account the possibilities of heterogeneity of the studies, a statistical test for heterngeneity was performed. The odds ratio and 95%CI were used to evaluate the risks. The meta analysis was applied with RevMan software 4.2, and the forest plot and funnel plot of meta analysis were worked out. Results A total of 5 381 cases and 5 827 controls from studies for Caucasian and a total of 1 558 cases and 1 755 controls from studies for East Asians were included. For Caucasian the pooled OR was 0.91 (95%CI: 0.81-1.02); For East Asians, the pooled OR is 0.83 (95%CI: 0.63-1.09). Publication bias exits in the study for Caucasian, but not for East Asians. Conclusion The results of this study indicated that the polymorphism of myeloperoxidase G-463A was not significantly associated with the lung cancer risk for Caucasian or East Asians. However, further studies for the East Asians is needed for the few subjects.
EFFECTS OF SELENIUM BULLET ON INDUSTRIAL FLUOROSIS OF GOATS
长效硒丸对山羊工业氟中毒预防效果的研究

Chen Youf,Wang Jundong,Hong Jianping,
陈友发
,王俊东,洪坚平

环境科学学报 , 1991,
Abstract: Goats of 6-10 months old were exposed to fluoride-polluted pasture for 18 months in order to evaluate the effects of selenium bullet on industrial fluorosis of goats. The results showed that the selenium bullet could reduce urine calcium, serum GOT and ALP, bone ALP and NAP, while bring up the urine calcium, GSH-px and transformation rate of lymph cell. The loose of the bone was eased and the growth during green grass period was prompted as well. It was suggested that selenium has effects of maintaining mineral metabolism, protecting cell membrane and strengthening immunolo-gical ability.
Estrogen Receptor and PI3K/Akt Signaling Pathway Involvement in S-(-)Equol-Induced Activation of Nrf2/ARE in Endothelial Cells
Ting Zhang, Xinyu Liang, Linying Shi, Li Wang, Junli Chen, Chao Kang, Jundong Zhu, Mantian Mi
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0079075
Abstract: S-(-)equol, a natural product of the isoflavone daidzein, has been reported to offer cytoprotective effects with respect to the cardiovascular system, but how this occurs is unclear. Interestingly, S-(-)equol is produced by the human gut, suggesting a role in physiological processes. We report that treatment of human umbilical vein endothelial cells and EA.hy926 cells with S-(-)equol induces ARE-luciferase reporter gene activity that is dose and time dependent. S-(-)equol (10–250 nM) increases nuclear factor-erythroid 2-related factor 2 (Nrf2) as well as gene products of Nrf2 target genes heme oxygenase-1 (HO-1) and NAD(P)H (nicotinamide-adenine-dinucleotide-phosp?hate)quinone oxidoreductase 1 (NQO1). Endothelial cells transfected with an HA-Nrf2 expression plasmid had elevated HA-Nrf2, HO-1, and NQO1 in response to S-(-)equol exposure. S-(-)equol treatment affected Nrf2 mRNA only slightly but significantly increased HO-1 and NQO1 mRNA. The pretreatment of cells with specific ER inhibitors or PI3K/Akt (ICI182,780 and LY294002) increased Nrf2, HO-1, and NQO1 protein, impaired nuclear translocation of HA-Nrf2, and decreased ARE-luciferase activity. Identical experiments were conducted with daidzein, which had effects similar to S-(-)equol. In addition, DPN treatment (an ERβ agonist) induced the ARE-luciferase reporter gene, promoting Nrf2 nuclear translocation. Cell pretreatment with an ERβ antagonist (PHTPP) impaired S-(-)equol-induced Nrf2 activation. Pre-incubation of cells followed by co-treatment with S-(-)equol significantly improved cell survival in response to H2O2 or tBHP and reduced apoptotic and TUNEL-positively-stained cells. Notably, the ability of S-(-)equol to protect against H2O2-induced cell apoptosis was attenuated in cells transfected with an siRNA against Nrf2. Thus, beneficial effects of S-(-)equol with respect to cytoprotective antioxidant gene activation may represent a novel strategy to prevent and treat cardiovascular diseases.
The New Infinite Sequence Complexion Solutions of a Kind of Nonlinear Evolutionary Equations  [PDF]
Lina Yi, Jundong Bao,   Taogetusang
Journal of Applied Mathematics and Physics (JAMP) , 2015, DOI: 10.4236/jamp.2015.312187
Abstract: The method combining the function transformation with the auxiliary equation is presented and the new infinite sequence complexion solutions of a class of nonlinear evolutionary equations are constructed. Step one, according to two function transformations, a class of nonlinear evolutionary equations is changed into two kinds of ordinary differential equations. Step two, using the first integral of the ordinary differential equations, two first order nonlinear ordinary differential equations are obtained. Step three, using function transformation, two first order nonlinear ordinary differential equations are changed to the ordinary differential equation that could be integrated. Step four, the new solutions, B?cklund transformation and the nonlinear superposition formula of solutions of the ordinary differential equation that could be integrated are applied to construct the new infinite sequence complexion solutions of a class of nonlinear evolutionary equations. These solutions are consisting of two-soliton solutions, two-period solutions and solutions composed of soliton solutions and period solutions.
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