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The sources of PAHs in different water bodies were evaluated by comparison of K oc values in sediments of the river downstream with that in soils. PAHs in Qiantang River were contributed from soil runoff. Thyroid and breast cancers TC, BC are common female malignant tumors worldwide.
Studies suggest that TC patients have a higher BC risk, and vice versa. However, it has not been investigated quantitatively if there is an association between the space-time TC and BC incidence distributions at the population level. This work aims to answer this question. Pearson and Spearman rank correlation coefficients of the TC and BC incidences were high, and their patterns were geographically similar.
The spatiotemporal co-existence of TC and BC distributions was investigated using the integrative disease predictability IDP criterion: if TC-BC association is part of the disease mapping knowledge bases, it should yield improved space-time incidence predictions. IDP consistently demonstrated the spatiotemporal co-existence of TC and BC distributions throughout Hangzhou , which means that when the population experiences high incidences of one kind of cancer attention should be paid to the other kind of cancer too.
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PubMed Central. IDP consistently demonstrated the spatiotemporal co-existence of TC and BC distributions throughout Hangzhou — , which means that when the population experiences high incidences of one kind of cancer attention should be paid to the other kind of cancer too. Association between perceived urban built environment attributes and leisure-time physical activity among adults in Hangzhou , China. Neighborhood built environment may influence residents' physical activity, which in turn, affects their health.
This study aimed to determine the associations between perceived built environment and leisure-time physical activity in Hangzhou , China. Multi-level regression was used to explore the relationship between perceived built environment variables and leisure-time physical activities. Data was collected in Hangzhou from June to December in , and was analyzed in May Male residents who perceived higher scores on access to physical activity destinations reported more involvement in leisure-time physical activity.
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Higher scores on perception of esthetic quality, and lower on residential density were associated with more time in leisure-time walking in women. The present study demonstrated that perceived urban built environment attributes significantly correlate with leisure-time physical activity in Hangzhou , China. Published by Elsevier Inc.
In this paper, an integrated estimation on the ecotourism carrying capacity of Hangzhou Xixi National Wetland Park in China was made from the aspects of ecological carrying capacity, spatial carrying capacity, facility carrying capacity, management carrying capacity, and psychological carrying capacity. The results indicated that the tourism carrying capacity of the Park was 4 - 6 persons per day. The rational distance between man and bird was first adopted to determine the ecotourism carrying capacity of wetland, which provided an effective solution both to fully ensure bird safety and to appropriately develop wetland tourism.
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The estimation of psychological carrying capacity based on tourist satisfaction degree reflected more objectively the extent the tourist demands satisfied at the planning, construction and management of tour places. Such an integrated estimation method based on the distance between man and bird and the tourist satisfaction degree could be of practical and instructive significances in the planning and management of wetland parks. Assessment of winter air pollution episodes using long-range transport modeling in Hangzhou , China , during World Internet Conference, To study the pollution characteristics and underlying causes, the Weather Research and Forecasting with Chemistry model was used to simulate the spatial and temporal evolution of the pollution episode from December 8 to 19, In addition to scenario simulations, analysis of the atmospheric trajectory and synoptic weather conditions were also performed.
The results demonstrated that control measures implemented during the week preceding the conference reduced the fine particulate matter PM 2. This study provides new insights into the challenge of winter pollution prevention in Hangzhou. For adequate pollution prevention, more regional collaborations should be fostered when creating policies for northern China. Air pollution and outpatient visits for conjunctivitis: A case-crossover study in Hangzhou , China. Conjunctivitis, one of the most common ocular surface diseases, can be caused by many factors.
The objective of this study was to investigate the potential association between conjunctivitis and air pollutants.
The data were linked to data on the concentrations of carbon monoxide CO , nitrogen dioxide NO 2 , ozone O 3 , sulfur dioxide SO 2 , and fine particulate matter with a median aerometric diameter of less than 10 and 2. A time-stratified case-crossover study design and conditional logistic regression were applied to analyze the association between air pollutants and outpatient visits for conjunctivitis. The strongest association was observed between SO 2 and conjunctivitis patients aged years.
Variation occurs between warm and cold seasons, between genders, and among different age groups. Our study provided evidence that outpatient visits for conjunctivitis were significantly associated with air pollution in Hangzhou , China. The Chinese Bulbul, Pycnonotus sinensis, is one of the most abundant and widely distributed birds of south China , settling even in dense urban areas.
From March-July , we surveyed the Chinese Bulbul in the urban environment of Hangzhou , China , to gain a clearer perspective on their breeding ecology. Totally, nests were found, mainly on the trees of Osmanthus fragrans Our results include several noteworthy observations: nest height from the ground was 3. In terms of fertility and reproduction, we also observed that the average incubation period was The main causes of breeding failure included egg and fledgling predation, as well as human disturbance.
With the purpose of assessing the environmental impacts and benefits of the current municipal solid waste management system and two modified systems, EASEWASTE, a life-cycle-based model, was used to evaluate the waste system of Hangzhou city in China.
An integrated model was established, including waste generation, collection, transportation, treatment, disposal and accompanying external processes. The results showed that CH 4 released from landfilling was the primary pollutant contributing to global warming, and HCl and NH 3 from incineration contributed most to acidification. Material recycling and incineration with energy recovery were important because of the induced savings in material production based on virgin materials and in energy production based on coal combustion.
A modified system in which waste is transported to the nearest incinerators would be relatively better than the current system, mainly due to the decrease of pollution from landfilled waste and the increase in energy production from waste avoiding energy production by traditional power plants. A ban on free plastic bags for shopping was shown to reduce most environmental impacts due to saved oil resources and other materials used in producing the plastic bags. Sensitivity analysis confirmed the robustness of the results. LCA methodology and a model like EASEWASTE are very suitable for evaluating the overall environmental consequences, and can be used for decision support and strategic planning in developing countries such as China where pollution control has become increasingly important with the rapid increase of waste generation as well as the increasing public awareness of environmental protection.
Characterization and energy potential of food waste from catering service in Hangzhou , China. Safe disposal of food waste is becoming an impending issue in China with the rapid increase of its production and the promotion of environmental awareness.
Food waste from catering services in Hangzhou , China , was surveyed and characterized in this study. A questionnaire survey involving units across the urban districts showed that Daily food waste production from catering units was estimated to be The ratio of volatile solid to total solid, easily biodegradable matter including crude fat, crude protein and total starch content in total solid and the ratio of total organic carbon to nitrogen varied in ranges of Based on the methane yield of mL g VS -1 in anaerobic batch tests, annual biogas energy of 1.
Food waste from catering services was suggested to be an attractive clean energy source by anaerobic digestion. Land use and land cover change LUCC influence the weather and climate conditions at local, regional and global scales.
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It has dramatically altered the Earth's landscape, chemical fluxes and influences the Earth's climate. The rapid land use change is often related to urban sprawl, farmland displacement, and deforestation. In the last two decades, land use land cover has rapidly changed in China especially along the eastern coastal region.
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Earlier studies have shown frequent days in a year occurrence of haze, fog and smog during in and around Hangzhou city which lies in the south east coast region of China. An analysis of ground observed air quality and trace gases from 11 stations in Hangzhou city and satellite retrieved atmospheric parameters from show increasing air quality and atmospheric pollution. The pollutants show very dynamic nature especially during winter season associated with the mixing with the influx of air mass from the surrounding regions.
The frequent occurrences of fog, haze and smog over Hangzhou city is associated with the land use and land cover change of km2 areas, home of 9. The spatial-temporal characteristics of land use change and air quality in response to rapid urbanization will be presented. Assessment of fruit and vegetable intake behavior among adolescents in Hangzhou , China.
To evaluate the fruit and vegetable FV intake of adolescents, assess factors influencing intake and discuss health education strategies related to this behavior. In Hangzhou , China , students aged Results of the survey rated FV consumption and children's readiness to assume healthier dietary choices. The study design incorporated the four core constructs of TTM: stages of change, processes of change, decisional balance and self-efficacy.
Results were assessed by chi-square tests, analysis of variance, Tukey's post-hoc tests and logistic regression analysis. Majority of the participants were in the TTM contemplation stage of change. The average number of FV servings among participants was 3. In this study, a total of 35 tree nut samples of walnut, pecan, pine seed, hickory nut and torreya were obtained from 5 farm product markets in Hangzhou , China , and investigated for essential Cr, Mn, Fe, Mo, Cu, Zn, Se and Sr and toxic Al, As, Cd and Pb elements by inductively coupled plasma-mass spectroscopy. Mean elemental concentrations of different tree nuts were in the following ranges: Cr 0.
The estimated provisional tolerable daily intake of Al, As, Cd and Pb was much lower than the provisional tolerable daily intake. Mobile phones and mobile phone apps have expanded new forms of health professionals' work. There are many studies on the use of mobile phone apps for different specialists.
However, there are no studies on the current use of mobile phone apps among general practitioners GPs. The objective of the study was to investigate the extent to which GPs own smartphones with apps and use them to aid their clinical activities. Data probing GPs' current use of medical apps in their clinical activities and factors influencing app use were collected and analyzed GPs participated in the survey. Most mobile phone owners had medical-related apps, with very few owning more than 4.
The majority of doctors reported using apps to aid clinical activities less than 30 minutes per day. A high level of mobile phone ownership and usage among GPs was found in this study, but few people chose medical-related apps to support their clinical practice. Phosphorus sorption and buffering mechanisms in suspended sediments from the Yangtze Estuary and Hangzhou Bay, China.