30 results on '"Zhao, Yan-Fang"'
Search Results
2. Dispersion features of pollutants in a compound channel with vegetated floodplains.
- Author
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Zhao, Yan-fang, Fan, Jing-jing, Wang, Wei-jie, Zhao, Han-qing, Dong, Fei, Han, Zhen, and Wang, Shi-yan
- Abstract
The planting of the vegetation on the floodplain helps the ecological restoration, which is the main form of the river's ecological corridor. Therefore, the current research of the river dynamics focuses on the water movement under a compound channel with the vegetated floodplains. Two simulated vegetation species are selected in this paper for the flume simulation experiments of the floodplain vegetation, and the compound channel is divided into three subregions in the transverse direction. The Navier-Stokes equation and the eddy viscosity theory are applied to obtain the transverse distribution of the depth-averaged velocity and the results agree well with the experimental data. This paper proposes a new method based on the analytical solution of the flow velocity distribution to calculate the average flow velocity in each section. Calculation results can effectively simulate the average flow velocity of the measured sections. The description of the pollutant transport processes in a moving stream requires a refined determination of the dispersion coefficients in the compound channel. The process of the pollutant concentrations in each zone and the reasons for their occurrence are elucidated on the basis of the experimental results. Simultaneously, the measured values of the longitudinal dispersion coefficients are obtained by the "routing procedure," and a two-zone model of the pollutant dispersion is constructed on the basis of the hydrodynamic study. The prediction method for the longitudinal dispersion coefficients is also presented. Applying the predicted and measured section average flow velocities to the two-zone model to predict the longitudinal dispersion coefficient, and the average relative errors are only 4.17%, 7.15%, respectively. This result indicates that the two-zone model can effectively predict the longitudinal dispersion coefficients. The calculation methods for the longitudinal dispersion coefficients from—various studies are compared. The results reveal that the predicted values of these calculation methods are all larger than the measured values, indicating that the vegetation has a considerable influence on the dispersion process. This study comprehensively shows the dispersion features of the pollutants and provides a theoretical basis for the planning and the design of the vegetated ecological corridors. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
3. Dispersion features of pollutants in a compound channel with vegetated floodplains
- Author
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Zhao, Yan-fang, Fan, Jing-jing, Wang, Wei-jie, Zhao, Han-qing, Dong, Fei, Han, Zhen, and Wang, Shi-yan
- Abstract
The planting of the vegetation on the floodplain helps the ecological restoration, which is the main form of the river’s ecological corridor. Therefore, the current research of the river dynamics focuses on the water movement under a compound channel with the vegetated floodplains. Two simulated vegetation species are selected in this paper for the flume simulation experiments of the floodplain vegetation, and the compound channel is divided into three subregions in the transverse direction. The Navier-Stokes equation and the eddy viscosity theory are applied to obtain the transverse distribution of the depth-averaged velocity and the results agree well with the experimental data. This paper proposes a new method based on the analytical solution of the flow velocity distribution to calculate the average flow velocity in each section. Calculation results can effectively simulate the average flow velocity of the measured sections. The description of the pollutant transport processes in a moving stream requires a refined determination of the dispersion coefficients in the compound channel. The process of the pollutant concentrations in each zone and the reasons for their occurrence are elucidated on the basis of the experimental results. Simultaneously, the measured values of the longitudinal dispersion coefficients are obtained by the “routing procedure,” and a two-zone model of the pollutant dispersion is constructed on the basis of the hydrodynamic study. The prediction method for the longitudinal dispersion coefficients is also presented. Applying the predicted and measured section average flow velocities to the two-zone model to predict the longitudinal dispersion coefficient, and the average relative errors are only 4.17%, 7.15%, respectively. This result indicates that the two-zone model can effectively predict the longitudinal dispersion coefficients. The calculation methods for the longitudinal dispersion coefficients from—various studies are compared. The results reveal that the predicted values of these calculation methods are all larger than the measured values, indicating that the vegetation has a considerable influence on the dispersion process. This study comprehensively shows the dispersion features of the pollutants and provides a theoretical basis for the planning and the design of the vegetated ecological corridors.
- Published
- 2022
- Full Text
- View/download PDF
4. Association between Baseline SBP/DBP and All-Cause Mortality in Residents of Shanxi, China: A Population-based Cohort Study from 2002 to 2015.
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WANG, Zhuo Qun, ZHAI, Yi, LI, Man, YANG, Xiu Feng, ZHANG, Jian, REN, Ze Ping, ZHANG, Mei, SONG, Peng Kun, ZHAO, Yan Fang, MI, Sheng Quan, ZHANG, Lu, YANG, Mao Xiang, and ZHAO, Wen Hua
- Subjects
COHORT analysis ,AGE groups ,AGE differences ,BLOOD pressure ,MORTALITY - Abstract
To investigate the association between blood pressure and all-cause mortality in Shanxi, China. The '2002 China Nutrition and Health Survey' baseline data in Shanxi province was used. A retrospective investigation was performed in 2015. The effects of SBP and DBP on the all-cause mortality were analyzed using the Cox regression model. The hazard ratio (HR) and 95% confidence interval (CI) were estimated by the sex and age groups. The follow-up rate was 76.52% over 13 years, while the cumulative mortality rate for all participants was 917.12/100,000 person-years. The mortality rose with an increasing SBP (χ
2 trend = 270.537, P < 0.001) or DBP level (χ2 trend = 57.240, P < 0.001). After adjustment for the confounding factors, a significant association between mortality and high SBP (≥ 160 mmHg) and high DBP (≥ 100 mmHg), with adjusted HR ranging from 1.405- to 2.179-fold for SBP and 1.550- to 2.854-fold for DBP, was noted. Significant HRs for most DBP subgroups were found in > 60-year-old participants. Males with DBP ≥ 100 mmHg had a significantly higher mortality, with an HR (95% CI) of 2.715 (1.377–5.351). Adults with SBP > 160 mmHg and DBP > 100 mmHg had a higher mortality risk. Sex and age difference was noted in both DBP and mortality risk. [ABSTRACT FROM AUTHOR]- Published
- 2021
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5. Abdominal Obesity and Its Attribution to All-cause Mortality in the General Population with 14 Years Follow-up: Findings from Shanxi Cohort in China.
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ZHAI, Yi, REN, Ze Ping, ZHANG, Mei, ZHANG, Jian, JIANG, Yong, MI, Sheng Quan, WANG, Zhuo Qun, ZHAO, Yan Fang, SONG, Peng Kun, YIN, Zhao Xue, and ZHAO, Wen Hua
- Subjects
WOMEN'S mortality ,WAIST circumference ,BODY mass index ,MORTALITY ,AGE groups - Abstract
This study aimed to assess the association of waist circumference (WC) with all-cause mortality among Chinese adults. The baseline data were from Shanxi Province of 2002 China Nutrition and Health Survey. The death investigation and follow-up visit were conducted from December 2015 to March 2016. The visits covered up to 5,360 of 7,007 participants, representing a response rate of 76.5%. The Cox regression model and floating absolute risk were used to estimate hazard ratio and 95% floating CI of death by gender and age groups (≥ 60 and < 60 years old). Sensitivity analysis was performed by excluding current smokers; participants with stroke, hypertension, and diabetes; participants who accidentally died; and participants who died during the first 2 years of follow-up. This study followed 67,129 person-years for 12.5 years on average, including 615 deaths. The mortality density was 916 per 100,000 person-years. Low WC was associated with all-cause mortality among men. Multifactor-adjusted hazard ratios (HR) were 1.60 (1.35–1.90) for WC < 75.0 cm and 1.40 (1.11–1.76) for WC ranging from 75.0 cm to 79.9 cm. Low WC (< 70.0 cm and 70.0–74.9 cm) and high WC (≥ 95.0 cm) groups had a high risk of mortality among women. The adjusted HR s of death were 1.43 (1.11–1.83), 1.39 (1.05–1.84), and 1.91 (1.13–3.22). WC was an important predictor of death independent of body mass index (BMI). WC should be used as a simple rapid screening and predictive indicator of the risk of death. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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6. Childhood BMI and Adult Obesity in a Chinese Sample: A 13-Year Follow-up Study.
- Author
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LIU, Dan, HAO, Yun Xia, ZHAO, Ting Zhi, SONG, Peng Kun, ZHAI, Yi, PANG, Shao Jie, ZHAO, Yan Fang, ZHANG, Mei, WANG, Zhuo Qun, MI, Sheng Quan, WANG, Yu Ying, ZHANG, Jian, and ZHAO, Wen Hua
- Subjects
CHILDHOOD obesity ,CHILDREN ,OBESITY ,STATURE ,BODY weight ,LOGISTIC regression analysis - Abstract
Obesity is recognized as a significant risk factor for diabetes and hypertension. The present study aimed to examine the associations between adults' obesity risk and childhood and parental obesity. A total of 204 children aged 6-17 years were recruited in 2002 with an average follow-up period of 13.2 years. Height and body weight were measured by trained staffs. Overweight and obesity were defined based on the Chinese standard for children and adults. T-test, analysis of variance, and Chi-square analysis were used for single factor analysis. Multiple linear and logistic regression analyses were used to perform multifactor analysis. The percentage of non-obese children who grew up to be non-obese adults was 62.6%, and that of obese children who grew up to be obese adults was 80.0%. There was a significant association between childhood body mass index (BMI) and adulthood BMI with a β regression coefficient of 3.76 [95% confidence interval (CI): 1.36-6.16], and between childhood obesity and adulthood obesity with an odds ratio of 5.76 (95% CI : 1.37-24.34). There was no statistical difference between parental obesity at baseline and children's adulthood obesity, after adjustment of confounders. Male participants and those aged 10.0-13.0 years had a higher risk of adulthood obesity with odds ratios of 2.50 (95% CI : 1.12-5.26) and 3.62 (95% CI : 1.17-11.24), respectively. Childhood obesity is an important predictor of adulthood obesity. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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7. Efficient Solid-Phase Extraction of Neonicotinoid Insecticides from Environmental Water and Drink Samples Using a Postmodified Metal–Organic Framework
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Sun, Shi-Rong, Sun, Qian-Yun, Liu, Feng, Zhao, Yan-Fang, Wang, Xiao-Li, Jiang, Hai-Long, Li, Na, Wu, Yong-Ning, Liu, Lu, and Zhao, Ru-Song
- Abstract
Neonicotinoid insecticides (NNIs) are extensively utilized globally because of their efficient and broad-spectrum properties. However, their residues are also extensively distributed in the environment. Herein, MIL-101-SO3Na with abundant −NH– and sulfonate groups was synthesized via chloromethylation and nucleophilic substitution postmodification strategies and used to extract NNIs via solid-phase extraction. MIL-101-SO3Na was enhanced by introducing C–H···N hydrogen bonds to strengthen interaction forces and −SO3Na groups to adjust surface charge and enhance electrostatic attraction. This modification and the substantial specific surface area (998 m2·g–1) of the metal–organic framework markedly enhanced the enrichment efficiency of MIL-101. The proposed method based on MIL-101-SO3Na exhibited a minimal detection threshold (0.04–0.87 ng·L–1), an extensive linear spectrum (1–2000 ng·L–1), and notable accuracy (a variation of 3.02–11.8%) in water and drink samples. NNI concentrations between 0.25 and 24.2 ng·L–1in fruit juice and tea samples were accurately identified using the proposed method, demonstrating its feasibility in practical applications. The postmodification of MIL-101-SO3Na is an exceptional and promising approach for the sensitive detection of ultratrace NNI levels in complex matrices.
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- 2024
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8. Hospital-Based Study of the Frequency and Risk Factors of Stroke Recurrence in Two Years in China.
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He, Qian, Wu, Cheng, Guo, Wei, Wang, Zhi-Yong, Zhao, Yan-Fang, Lu, Jian, Qin, Ying-Yi, Guo, Yi-Bin, Qin, Yu-Chen, Pan, Chuan-Di, and He, Jia
- Abstract
Background: Stroke causes death and disability throughout the world and recurrent stroke events are more likely to be disabling or fatal. We conducted a hospital-based study to investigate the frequency and influence factors of stroke recurrence in China.Methods: Data from patients hospitalized with stroke between January 2007 and December 2010 of 109 tertiary hospitals in China were used. Stroke recurrence and associated factors were ascertained. The zero-inflated model was used to evaluate the factors of recurrence.Results: Of 101,926 discharged patients, the cumulative 2-year stroke recurrence rate was 3.80% for subarachnoid hemorrhage (SAH), 5.31% for intracerebral hemorrhage (ICH), and 8.71% for ischemic stroke (IS), respectively. Among patients with stroke recurrence, 54.11% with SAH, 60.42% with ICH, and 92.92% with IS relapsed for the same type of the first-onset stroke. For discharged patients with SAH with middle cerebral artery aneurysm clipping or artery aneurysm embolization, it was less likely to stroke relapse, but the times of recurrence would increase if 1 recurrence appeared. Cerebral artery aneurysms and hypertension were risk factors for recurrence frequency. For ICH, protective factors for recurrence were trepanation and drainage of intracranial hematoma, cerebral angiography, puncture and drainage of intracranial hematoma, and length of stay (LOS). But rheumatic heart disease and atrial fibrillation would further the relapse frequency. For IS, age and LOS were protective factors, but recurrence frequency would increase if the first recurrence happened. Cervical spondylopathy, male gender, and diabetes were risk factors for frequency of relapse.Conclusions: Associated factors were different for recurrence frequency among different stroke types. [ABSTRACT FROM AUTHOR]- Published
- 2017
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9. Impact of otrAexpression on morphological differentiation, actinorhodin production, and resistance to aminoglycosides in Streptomyces coelicolorM145
- Author
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Zhao, Yan-fang, Lu, Dan-dan, Bechthold, Andreas, Ma, Zheng, and Yu, Xiao-ping
- Abstract
otrAresembles elongation factor G (EF-G) and is considered to be an oxytetracycline (OTC)-resistance determinant in Streptomyces rimosus. In order to determine whether otrAalso conferred resistance to OTC and other aminoglycosides to Streptomyces coelicolor, the otrAgene from S. rimosusM527 was cloned under the control of the strong ermE* promoter. The resulting plasmid, pIB139-otrA, was introduced into S. coelicolorM145 by intergeneric conjugation, yielding the recombinant strain S. coelicolorM145-OA. As expected S. coelicolorM145-OA exhibited higher resistance levels specifically to OTC and aminoglycosides gentamycin, hygromycin, streptomycin, and spectinomycin. However, unexpectedly, S. coelicolorM145-OA on solid medium showed an accelerated aerial mycelia formation, a precocious sporulation, and an enhanced actinorhodin (Act) production. Upon growth in 5-L fermentor, the amount of intra- and extracellular Act production was 6-fold and 2-fold higher, respectively, than that of the original strain. Consistently, reverse transcription polymerase chain reaction (RT-PCR) analysis revealed that the transcriptional level of pathway-specific regulatory gene actII-orf4was significantly enhanced in S. coelicolorM145-OA compared with in S. coelicolorM145.
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- 2018
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10. Identification of hydrazone moiety-bearing aminopyrimidines as potent antitumor agents with selective inhibition of gefitinib-resistant H1975 cancer cells
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Qin, Ming-Ze, Wang, Lei, Yan, Shuang, Ma, Jun-Jie, Tian, Ye, Zhao, Yan-Fang, and Gong, Ping
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- 2017
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11. Thermal Bubble Nucleation in a Nanochannel: An Experiment Investigation
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Chen, Min, Jiang, Kun Peng, Jiang, Da Wei, Chen, Dong Dong, and Zhao, Yan Fang
- Abstract
We investigated the nanoscale thermal bubble nucleation based on the principle of Coulter counter. With micro-nanofabrication technologies, a device was designed and fabricated, and a detection platform was set up which was used to investigate the thermal bubble nucleation of aqueous solution confined in a nanochannel with a cross size of about 100 nm×100 nm. Results show that with the temperature of the solution confined in the nanochannel increasing, the current through the channel increases first and then decreases, and vanishes after a fluctuating period. It can be found that the generating thermal bubbles can hinder the current flowing through the nanochannel. In addition, the shrinking and expanding of thermal bubbles’ volume correspond to the increase and decrease of the current. Finally, the thermal bubbles block the nanochannel entirely. Through the experiment results, our device can be applied to investigate the complex behaviors of thermal bubble produced in aqueous solution confined in nanochannels, effectively.
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- 2014
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12. The Damping Properties of the Natural Rubber Filled with ZnO
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Zhao, Yan Fang, Liu, Dan, Liao, Shuang Quan, Liao, Xiao Xue, and Lin, Sheng Bo
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The research on the mechanical properties and thermal stability of the natural rubber filled with different dosage of Zinc oxide (ZnO). The results showed that with the increase of the content of the ZnO, the tensile strength first increased, then decreased the, but the tear strength showed a trend of increase,the thermal stability had improved; When the amount of ZnO added was 9, damping performance was better.
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- 2014
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13. Mechanical and Thermal Properties of Natural Rubber Latex Modified by Purple Carbon Black
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Fan, Dan, Liao, Xiao Xue, Liao, Shuang Quan, Zhao, Yan Fang, and Sun, Jie
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Stable aqueous solution of purple carbon black (PCB) was prepared first and then added to prevulcanized natural rubber latex. The effects of the amount of PCB, silane coupling agent and the type of silane coupling agent on the mechanical properties of the vulcanized latex film were researched. The results show that the best mechanical properties were obtained when the vulcanized film was filled with 6 phr PCB modified by KH560. TG shows that thermal stability of the film with PCB modified by KH560 increased. DSC shows that the glass transition temperature of the film increased after adding PCB.
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- 2013
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14. Review on the Unbroken Three-Dimensional Network Modification Methods of Waste Rubber Powder
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Liao, Xiao Xue, Liao, Shuang Quan, Zhao, Yan Fang, Luo, Ming Chao, and Tian, Wei Min
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Waste rubber powder (WRP) is global concern, with the development of rubber industry. However, WRP with three-dimensional structure is insoluble and nonmelting and doesnt blend with raw rubber very well. Before added into raw rubber, WRP should be modified. In this paper ,the modification methods of WRP which contain grafting, sol-gel and reactive gas treatment method,through the unbroken three-dimensional network are described.
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- 2013
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15. Preparation of Polymer Composite Latex via Miniemulsion Polymerization: Fluorinated Acrylate as Co-Stabilizer and Functional Modifier
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Zhao, Fu Chun, Liao, Shuang Quan, Zhao, Yan Fang, Tan, Hai Sheng, and Xu, Nai
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The silica/polyacylate composite latex was prepared via miniemulsion polymerization. Fluorinated acrylate monomer was used the co-stabilizer and hydrophobic modifier. The effect of fluorinated acrylate on stability of the composite latex was compared with the traditional co-stabilizer. The composite latex and the resultant film were characterized by Fourier transformation infrared spectroscopy, Dynamic laser scattering, Water contact angle. Fluorinated acrylate can stabilize the miniemulsion polymerization as the co-stabilizer and the resultant film has good durability of hydrophobicity under high moisture environments.
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- 2013
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16. Research on Open Numerical Control System Based on Collaborative Design and Development
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Yuan, Xiao Ming, Zhao, Yan Fang, Shi, Shun Yi, and Wang, Hong Yu
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The characteristics of open CNC system and the current several open CNC system models are introduced in this paper. In order to overcome the contradiction between the frequent changes demand and the closure of the traditional system, the open CNC system software and hardware architectures were investigated based on web-collaborative design and development, which improve the system development efficiency. Using the Windows XP operating system as a software platform, the Visual C++ 6.0 object-oriented programming language is adopted to design the CNC drilling control software based on the "PC + NC" the model and modular co-design methods, which improve the openness of the CNC system.
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- 2013
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17. Thermooxidative degradation and its kinetics of natural rubber coagulated by microwave radiation
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Liao, Lu-Sheng, Liao, Jian-He, Li, Yi-Min, Chen, Yong-Ping, Zhao, Yan-Fang, and He, Can-Zhong
- Abstract
AbstractThe thermooxidative degradation of natural rubber (NR) coagulated by microwave radiation (NR-m) was investigated by thermogravimetry (TG) analysis, and compared with NR coagulated by acid (NR-a). It was found that the degradation process is not a one-step reaction, the main degradation process occurs at 300–400ºC, and the equilibrium degradation temperatures of NR-m are higher than those of NR-a. Different methods were used to find the most probable kinetic model and the Arrhenius parameters (activation energy Eand preexponential factor A) for the main stage of thermooxidative degradation of NR-m. The results show that the values of Eand A, obtained from the Coats-Redfern method, are highly variable with the kinetic model chosen and the heating rate (β), and the apparent activation energy (E0) when βapproaches zero for the Dntype kinetic model is in the range of 96.7–106.4 kJ ∙ mol-1. The mean values of E, calculated by the Friedman and Flynn-Wall-Ozawa (FWO) methods, are 113.8 and 83.3 kJ ∙ mol-1, respectively, suggesting Ein the range of 83.3–113.8 kJ ∙ mol-1. Comparison of these two ranges indicates the most probable kinetic model to be Dntype kinetic models, corresponding to a diffusion-controlled mechanism.
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- 2012
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18. Review on the Broken Three-Dimensional Network Modification Methods of Waste Rubber Powder
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Luo, Ming Chao, Liao, Xiao Xue, Liao, Shuang Quan, and Zhao, Yan Fang
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The modification methods of waste rubber powder(WRP) which contain mechanochemical, microwave, ultrasonic, devulcanization in supercritical material and microbial devulcanization method through cutting off three-dimensional network are described. More emphasis is put on devulcanization mechanism and the defects of each method as the devulcanization process is often accompanied with the main rubber chains degradation are also discussed. When modified WRP is added into rubber matrix, the mechanical properties of composite and compatibility between virgin rubber and WRP are improved. So the mode of core modification on WRP is built, through the broken three-dimensional network modification methods of WRP.
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- 2012
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19. Anaerobic Biohydrogen Production by the Mixed Culture with Mesoporous Fe3O4 Nanoparticles Activation
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Zhao, Wei, Zhao, Jie, Chen, Guo Dong, Feng, Rui, Yang, Jian, Zhao, Yan Fang, Wei, Qin, Du, Bin, and Zhang, Yong Fang
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It was the first time to study the catalytic effect of mesoporous magnetic Fe
3 O4 nanoparticles on the biohydrogen production. The mixed culture used in this study just suffered from an alkaline shock and lost its bioactivity of hydrogen production. We use mesoporous Fe3 O4 nanoparticles and ferrous ions as activators to recover the bioactivity of the mixed culture. The results indicate that the improvement of biohydrogen yield by mesoporous Fe3 O4 was obvious larger than that by ferrous ions. The maximum yield of cumulative hydrogen production was obtained at the mesoporous Fe3 O4 nanoparticles of 400 mg·L-1 , which is 26% higher than that of the blank. The lag phases for hydrogen production in the tests added with mesoporous Fe3 O4 nanoparticles were decreased to 12 h, which are 50 h less than those of the corresponding ferrous ions and blank tests.- Published
- 2011
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20. Electrocatalysis Property of DNA-Hydroxyapatite Modified Electrode on Chloramphenicol
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Zhang, Nuo, Zhao, Yan Fang, Dai, Yu Xue, Wu, Dan, Du, Bin, and Wei, Qin
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An electroanalysis method of determining Chloramphenicol (CAP) based on the eletrocalysis property of DNA-hydroxyapatite modified electrode (dsDNA/HAp/GCE) was setted up. In KH
2 PO4 -Na2 HPO4 buffer solution with pH 6.0 cotaining 0.1 mol·L-1 KCl, the peak current was proportional to the concentration of CAP in the range of 2.80 × 10-7 to 3.60 × 10-6 mol·L-1 , with a detection limit of 1.35 × 10-7 mol·L-1 . The linear regress equation was ip (μA) = 5.865 + 0.4784 c (µmol·L-1 ), and the linear correlation coffcient was 0.9942. The method has been successfully applied to the quantitative analysis of CAP in real Chloramphenicol eye drops samples, which totally meet the demand of microanalysis. The relative standard deviation samples analysis results was 1ess than 3%.- Published
- 2011
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21. Study on Thermal and Mechanical Properties of Natural Rubber Latex Modified by Trichlorobromomethane
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Liao, Xiao Xue, Liao, Shuang Quan, Tang, Bing, Luo, Ming Chao, Zhao, Yan Fang, and Tan, Hai Sheng
- Abstract
Natural rubber latex (NRL) modified by holgonated addition with trichlorobromomethane was prepared. The thermal properties of modified NRL were analyzed by thermogravimetric analysis (TG/DTG),differential scanning calorimetry (DSC) and dynamic mechanical analysis(DMA). The results showed that the thermal stability of modified NRL was lower than NRL and the thermal degradation of modified NRL was two-stage decomposition. With increasing of stress frequency, loss modulus and storage modulus of latex increased,while loss modulus and storage modulus of modified latex decreased,compared with NRL.
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- 2011
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22. A Brief Analysis on the Construction of Banking Office Automation System
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Li, Zhen, Zhao, Yan Fang, and Li, Min
- Abstract
As one of the most important parts of the financial organizations nowadays, banking industry plays an important role in not just the area of high-speed operation of the sociaty’s economy but also in the area of currency exchange. The Wave of Information Technology, which has caused a swift-development of the whole world’s economy, brings about both opportunity and challengs never arised to the banking industry. The sociaty, as it is becoming more intellectual and automatic, has post a harder demand for the working efficiency of the banking industry. Therefore, the banking industry must enhance its construction of informationization and automation in order to strengthern its competitiveness as well as the economic construction of service sociaty. Banking office automation will improve the working efficiency along with modernized management level in the light of advanced computer technology.
- Published
- 2011
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23. RhG-CSF improves radiation-induced myelosuppression and survival in the canine exposed to fission neutron irradiation.
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Yu, Zu-Yin, Li, Ming, Han, A-Ru-Na, Xing, Shuang, Ou, Hong-Ling, Xiong, Guo-Lin, Xie, Ling, Zhao, Yan-Fang, Xiao, He, Shan, Ya-Jun, Zhao, Zhen-Hu, Liu, Xiao-Lan, Cong, Yu-Wen, and Luo, Qing-Liang
- Abstract
Fission-neutron radiation damage is hard to treat due to its critical injuries to hematopoietic and gastrointestinal systems, and so far few data are available on the therapeutic measures for neutron-radiation syndrome. This study was designed to test the effects of recombinant human granulocyte colony-stimulating factor (rhG-CSF) in dogs which had received 2.3 Gy mixed fission-neutron-γ irradiation with a high ratio of neutrons (~90%). Following irradiation, rhG-CSF treatment induced 100% survival versus 60% in controls. Only two of five rhG-CSF-treated dogs experienced leukopenia (white blood cells [WBC] count < 1.0 × 10(9)/L) and neutropenia (neutrophil [ANC] count < 0.5 × 10(9)/L), whereas all irradiated controls displayed a profound period of leukopenia and neutropenia. Furthermore, administration of rhG-CSF significantly delayed the onset of leukopenia and reduced the duration of leucopenia as compared with controls. In addition, individual dogs in the rhG-CSF-treated group exhibited evident differences in rhG-CSF responsiveness after neutron-irradiation. Finally, histopathological evaluation of the surviving dogs revealed that the incidence and severity of bone marrow, thymus and spleen damage decreased in rhG-CSF-treated dogs as compared with surviving controls. Thus, these results demonstrated that rhG-CSF administration enhanced recovery of myelopoiesis and survival after neutron-irradiation.
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- 2011
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24. Synthesis and antitumor activities of novel 1,4-substituted phthalazine derivatives
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Zhang, Shu Lan, Liu, Ya Jing, Zhao, Yan Fang, Guo, Qiu Ting, and Gong, Ping
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A series of 1,4-substituted phthalazine derivatives were designed and synthesized. All the prepared compounds were screened for their cytotoxic activities against A549, HT-29 and MDA-MB-231 cell lines in vitro. Among them, compounds 7a–7hshowed excellent selectivity for MDA-MB-231 cell line with IC50values from 1nmol/L to 0.92μmol/L. A preliminary SAR study of these derivatives was performed.
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- 2010
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25. Design, synthesis and antiproliferative activities of novel 5H-pyridazino[4,5-b]indoles
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Li, Rong Dong, Zhai, Xin, Zhao, Yan Fang, and Gong, Ping
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A novel series of 5H-pyridazino[4,5-b]indoles were designed and synthesized in order to find novel potent anticancer compounds. The structures were confirmed by 1H NMR and MS. Their antiproliferative activities against two cancer cell lines were tested by the MTT method in vitro. Three of compounds (1e, 1g, and 1h) exhibited potent antiproliferative activities, especially compound 1h (with IC50 values of 5.2μmol/L and 1.9μmol/L against Bel-7402 and HT-1080, respectively). The preliminary structure–activity relationships of 5H-pyridazino[4,5-b]indole derivatives were discussed.
- Published
- 2007
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26. Burden of cardiovascular disease from 1990 to 2017 in Henan Province, China
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Zhao, Yan-fang, Zhang, Tai, Wang, Zhuo-qun, Chen, Xiao-rong, Wang, Chun-xiao, Qi, Jin-lei, Yang, Jing, Wu, Jing, and Zhou, Mai-geng
- Abstract
ABSTRACTBackgroundCardiovascular diseases (CVDs) are the leading causes of death in China. Little is known about the CVD burden and risk factors in Henan Province, China.ObjectiveTo analyze the CVD burden and main risk factors between 1990 and 2017 in the Henan Province in China.MethodsThe methodological framework and analytical strategies adopted in the Global Burden of Disease Study 2017 were used.Results(1) Age-standardized mortality rate attributed to CVDs increased from 355.0 per 100,000 persons in 1990 to 364.1 per 100,000 persons in 2017 in Henan. (2) Age-standardized disability adjusted life years (DALYs) rate fell by 3.9% from 1990 to 2017. However, the number of DALYs attributed to CVDs increased by 75.9% from 4.2 million person-years in 1990 to 7.3 million person-years in 2017. (3) The age-standardized years lived with disability (YLDs) rate increased by 27.5% from 1990 to 2017. However, years of life lost (YLLs) rate decreased by 6.7% from 1990 to 2017. The contribution of YLLs to the DALYs decreased from 91.4% in 1990 to 89.2% in 2017. (4) Stroke (52.3%) and ischemic heart diseases (38.8%) accounted for 91.1% of total CVDs DALYs among adults in 2017. (5) Dietary factors such as high intake of sodium, alcohol use and low intake of fruits, high systolic blood pressure, and tobacco use were the top risk factors for CVDs, and the estimated population attributable fraction in 2017 was 69.4%, 56.7% and 25.2%, respectively.ConclusionsThe absolute burden of CVDs in Henan is still high, although age-standardized DALYs declined between 1990 and 2017. The prevention and control of stroke and ischemic heart diseases should focus on a few modifiable risk factors which mainly contributed to the burden of CVDs, such as dietary factors, high systolic blood pressure, and tobacco use.
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- 2021
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27. Synthesis and in vitroantitumor activity of novel diaryl urea derivatives
- Author
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Zhao, Yan-Fang, Liu, Zi-Jian, Zhai, Xin, Ge, Dan-Dan, Huang, Qiang, and Gong, Ping
- Abstract
A series of novel diaryl ureas containing 4-[(2-amino-6-trifluromethyl)pyrimidine-4-yl]piperazine-1-yl group were synthesized and evaluated for their cytotoxic activities in a panel of human cancer cell lines. Among them, compound 2pdemonstrated significant inhibitory activities against MDA-MB-231, HT-29 and MCF-7 cell lines with IC50values of 0.016, 0.63, 0.001μmol/L, respectively.
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- 2013
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28. ChemInform Abstract: Synthesis and Cytotoxicity Studies of Novel [1,2,4]Triazolo[1,5‐a]pyrimidine‐7‐amines.
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Zhai, Xin, Zhao, Yan‐Fang, Liu, Ya‐Jing, Zhang, Yong, Xun, Feng‐Qiang, Liu, Jun, and Gong, Ping
- Abstract
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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- 2008
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29. Synthesis and Antitumor Activities of a Novel Series of Tricyclic 1‐Anilino‐5H‐pyridazino[4,5‐b]indoles.
- Author
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Li, Rong Dong, Zhai, Xin, Zhao, Yan Fang, Yu, Shuang, and Gong, Ping
- Abstract
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
- Published
- 2007
- Full Text
- View/download PDF
30. Synthesis and Antitumor Activities of Novel Pyrazolo[1,5‐a]pyrimidines.
- Author
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Li, Juan, Zhao, Yan Fang, Zhao, Xiang Lin, Yuan, Xiao Ye, and Gong, Ping
- Abstract
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
- Published
- 2007
- Full Text
- View/download PDF
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