Jiangmen City Research Articles

阳江核电站放射性气态流出物浓度计算

针对阳江核电站的实际情形，基于阳江核电站区域的已知地面风场，通过高斯模型模拟计算了源于阳江核电站(东经112.27˚，北纬21.72˚)的放射性气态流出物点源瞬时释放后放射性核素云团的迁移和扩散过程，得到了放射性核素云团中心的运动轨迹、放射性核素云团中心地面相对浓度、放射性核素云团地面相对浓度分布及其等值线分布，同时给出了阳江市及邻近城市茂名市、云浮市、江门市放射性核素地面相对浓度随时间的变化。这些结果为源于阳江核电站的放射性气态流出物对整个阳江地区以及邻近城市的辐射环境影响提供参考信息，为可能发生的核电站事故下的监测提供参考数据。 According to the practical situation of Yangjiang nuclear power plant and based on the specific ground wind field, the Gassion model is taken to simulate the transport and diffusion of the ra-dionuclide cloud in atmosphere, which come from an instantaneous point source from Yangjiang nuclear power plant (112.27˚ east longitude, 21.72˚ north latitude). The obtained calculated results are about the trajectory of the radionuclide cloud core, the relative concentration of the ra-dionuclide cloud center on the ground, the distribution of the relative concentration of the radio-nuclides and its isopleths. Further, the relative concentration of the radionuclides at Yangjiang nuclear power plant and the nearby cities, such as Yangjiang city, Maoming city, Yunfu city and Jiangmen city, have been evaluated. All these results not only can provide information for studying the radioactive effect on Yangjiang area and those nearby cities because of the radionuclides in gaseous effluents from Yangjiang nuclear power plant, but also can provide reference information for monitoring the possible nuclear incidents in nuclear power plant.

The Carbon Sink Estimation and Carbon Sink Increase Potential of Jiangmen, China

The sequestration of forest, farmland, and Green garden carbon inJiangmen City during 2004 to 2010 has been estimated. The biggest carbon sink in 2010 is the forest, with an annual carbon sequestration of ; next is the farmland, with an annual carbon sequestration of . The C uptaken by these two types of carbon sinks accounts for 95% of all the carbon sinks in Jiangmen City. Potentials for the increase of carbon sinks are then discussed. To popularize growing green manure during winter may increase carbon sequestration at about every year. If all the newly established open forests in the whole City in 2010 are fenced for forest conservation, an annual carbon sequestration of may be expected to increase in two years. If the per mu yield of crops below the average of Guangdong Province in 2010 are increased to the average, an annual carbon sequestration of may increase.

A new species of the genus Opisthotropis Gunther, 1872 (Squamata: Colubridae: Natricinae) from Guangdong Province, China.

A new natricid snake of the genus Opisthotropis Gunther, 1872, Opisthotropis laui sp. nov., is described from Mt. Gudou, Jiangmen City, Guangdong Province, China. The new species can be distinguished from other congeners by the combination of the following characters: dorsal scales weakly keeled throughout, in 25:23:23 rows; 10 supralabials; 11 infralabials; two internasals, longer than wide, not touching the loreal; one loreal, not touching the eye; one preocular; two postoculars; one anterior temporal scale; 152 ventrals; 53 subcaudals; body and tail dark olive above, with light yellow crossbars.

Prediction Models of Short-Term Traffic Flow Based on Neural Network

For the city’s road conditions, a nonlinear regression prediction model based on BP Neural Network was built. The simulation shows it has good adaptability and strong nonlinear mapping ability. Using the wavelet basis function as hidden layer nodes transfer function, a BP-Neural- Network-topology-based Wavelet Neural Network model was proposed. The model can overcome the defects of the BP Neural Network model that easy to fall into local minimum and cannot perform global search. The feasibility of the model was proved using measured data from yingbin avenue in jiangmen city.

Molecular epidemiology of norovirus gastroenteritis in children in Jiangmen, China, 2005–2007

Human noroviruses (NoVs) are an important cause of epidemic acute gastroenteritis. Their role in sporadic cases, however, is less clear. In this study, we performed a two-year surveillance (September 2005 to August 2007) of NoV gastroenteritis in outpatient clinics in a southern city of China, Jiangmen City. NoVs were detected in 115 patients (115/881, 13.1%) with 30 (26.1%) co-infections with rotaviruses. Sequence analysis showed that all 115 NoVs belonged to genogroup II, with GII.4 being the most predominant (87.8%). NoV-associated infection can be seen year-around, with autumn and winter peaks. This study provides basic information on sporadic cases of major NoV gastroenteritis in children in different seasons, which is valuable for future disease control and prevention.

Investigation on dyslipidemia and noninfectious chronic disease risk factor aggregation among population of health examination in Jiangmen

Objective To investigate the dyslipidemia and noninfectious chronic disease risk factor aggregation among population of health examination in Jiangmen. Methods The blood samples were collected from May to July 2010 in Jiangmen city. It included 3959 subjects aged 20-79 years, these subjects were analyzed for total cholesterol, triglyceride, low density liprotein-cholesterol, high density liproteincholesterol, glucose, uric acid, blood pressure and BMI. Results The prevalence of hypercholesterolemia,hypertriglyceridemia,high LDL-C,low HDL-C were 48.22%, 31.85%, 15.04% and 0.58% respectively.The dyslipidemia rates of 40-59 years group higher than the 20-39 years group and the 60-79 years group in male. The prevalence of the dyslipidemia went up with the age in female. There were aggregation between lipid disorders and hypertension, impaired fasting glucose, obesity and hyperuricaemia, especially in female .Conclusion The dyslipidemia rate of the population of health examination in Jiangmen was high,especially in male. We should focus our prevention and control on strengthening drumbeating and intervening to control obesity to decrease dyslipidemia and noninfectious chronic disease. Key words: Dyslipidemia; Noninfectious chronic disease; Prevalence; Risk factor

The responsiveness of the health care system in Jiangmen

Objective To analyze the responsiveness level of the care system in Jiangme by the measurement tools provided by the World Health Organization. and to provide support for the evaluation and improvement of the responsiveness. Methods A was conducted on 786 patients who received the medical services during the past year by the health system responsiveness survey questionnaires designed by WHO. The data were entered by the Epidata and processed with the SPSS16.0. Results The top three factors of frequency distribution for the responsiveness of the care system responsiveness to the clinics and hospitalization as excellence or good were social support,dignity,and confidentiality. The worse or very poor factors were basic environmental quality,selectivity,and prompt care for clinics and basic environment,communication,and prompt care for hospitalization. Conclusions We should enlarge investment to the care system,improve the service quality of the hospitals,focus on effective communication with patient,an enhance improve the overall responsive levels in the hospitals at all levels. Key words: Health care system; Responsiveness; Jiangmen city

An analysis of responsiveness of hospitalized patients in a 3-A hospital in Jiangmen city

Objective To understand the difference between non-medical service quality and the expectation of patients in a 3-A hospital in Jiangmen city, and to explore the influencing factors to provide policy recommendations. Methods A random sample survey on 236 hospitalized patients receiving medical services in a hospital in Jiangmen city was conducted. The data was entered using Epidata double entry and was analyzed completed by the SPSS11.5 software. Results The overall level of patient responsiveness was 7.94 points. Dignity was the highest and prompt attention was the lowest. Conclusions We should focus on patient reasonable expectation, to improve medical environment in the hospital, enhance the ability of hospital management. Key words: Jiangmen city; Hospitalized patients; Responsiveness; 3-A hospitals

The responsiveness of health care system in Jiangmen city, Guangdong province

Objective To measure the level of responsiveness of care system in Jiangmen city, Guangdong province and to compare the difference of responsiveness among different groups of people.Methods A was conducted with health system responsiveness survey questionnaire designed by WHO, with two-input logic data by EPIDATA proofreading. Results The study showed Jiangmen evaluation of system responsiveness total value of 7.16 points, most in need of improvement was immediate attention, effective communication, and patient environment. Conclusions We should strengthen medical education in staff, foster patient respect and patient-centered philosophy, improve management mechanisms at all levels of medical institutions to improve the responsiveness of care system. Key words: Reactivity; Health care system; Evaluation

A survey and analysis of the responsiveness of rural health care system in Jiangmen city

Objective To understand the performance of health care system in Jiangmen rural areas, to find the weakness and to analyze the reasons, to take measures to improve the overall service level of the system. Methods A survey on 208 people who received public health services in the past year at three districts and four counties in Jiangmen was conducted by questionnaires. All the questionnaires were coded with two-input logic proof by Epidata and processed by the SPSS 16.0 software. Results Of the best rural health system response was dignity 89.9%, and social support network 89%. Considered poor or very poor response to the first three is the quality of infrastructure, 8.2%, 3.4% selected heath care workers to patients in a timely manner and accounted for 1.4% interest. Conclusions Imvestment should be increased to the rural health care system to improve the basic structures. Autonomy, prompt attention, confidentiality, and selection of medical staff should be further improved to enhance the responsiveness of rural health care system. Key words: Rural area; Health care system; Responsiveness; Patients

The current status of the awareness of AIDS in the migrant workers at a factory in Jiangmen

Objective To explror the strategies for preventing and treating AIDS by surveying the awareness of AIDS in the migrant workers in Jiangmen City. Methods 200 migrant workers were selected by a random sampling method and were surveyed via questionnaires on their knowledge of AIDS prevention. Results The awareness rate of AIDS transmission was 51.27% in male and 57.4% in female 57.4%; and that of AIDS prevention was 49.4% in male and 56.1% in female. The way of acquiring information on AIDS was as follow: television 88.3%, print media 85%, Internet 76.7%. Conclusions of peasant workers to recognize the existence of AIDS transmission errors in the prevention of AIDS awareness and prevention capabilities to be strengthened, and the health sector need to increase migrant workers in the AIDS knowledge of health education to prevent AIDS, increase their awareness and ability to protect themselves. Key words: AIDS; Migrant workers; Health education

Development of real-time and nested RT-PCR to detect astrovirus and one-year survey of astrovirus in Jiangmen City, China

Human astroviruses (HAstVs) are one of the major viral agents of acute gastroenteritis (AGE) in all age groups, especially in young children. In this study, new one-step real-time RT-PCR and nested RT-PCR assays were developed to detect HAstVs. HAstVs were identified in 46 (8.75%) of 526 stool samples in Jiangmen City over 1 year, including 43 (9.15%) of 470 children and 3 (5.4%) of 56 adults, and HAstV-1 was the most predominant strain. This finding suggests that HAstVs infections are common in Jiangmen City, China. Further detailed molecular epidemiological studies are required for understanding the prevalence of HAstVs infection and gaining knowledge about the circulating genotypes.

Warfarin resistance in Rattus losea in Guangdong Province, China

Control of rodent populations is performed worldwide with coumarin derivatives, such as warfarin. After widespread use, their effect has been diminished by the rapid spread of resistant rodents. Warfarin resistance in Rattus loseas in Jiangmen and Zhanjiang City, Guangdong Province, was investigated by lethal feeding tests. Twenty-three of 30 R. loseas trapped in Jiangmen City were assayed as warfarin-resistant individuals, whereas only 1 of 30 rodents in Zhanjiang was resistant. These results emphasize the need for thorough resistance monitoring as a basis for adequate control measures to prevent the use of ineffective rodenticides in Jiangmen City. The resistance mechanism mainly involves VKORC1, the molecular target for coumarin drugs. VKORC1 mRNA expression in wild-caught resistant animals showed no difference compared with that in susceptible individuals. Mutation screening of VKORC1 was carried out and an Arg58Gly mutation was identified as the prevailing type in R. loseas from Jiangmen City, which may constitute the genetic basis of anticoagulation resistance in R. losea in this resistance region.