Objective To observe the effect of environmental factors change on the hemorheology of the rabbit with myocardial ischemia.Methods The rabbits were divided into six groups,the group of myocardial ischemia(myocardial ischemia operation),the group of myocardial ischemia with hypoxia(volume fraction of oxygen of 91.5% nitrogen and 8.5% oxygen) and high temperature [(42?2)℃],the group of myocardial ischemia with hypoxia(volume of fraction of oxygen of 91.5% nitrogen and 8.5% oxygen),the group of myocardial ischemia with hypoxia(volume of fraction of oxygen of 91.5% nitrogen and 8.5% oxygen) and high temperature[(42?2)℃] and hunger(forbid water and fast in 24 h),the group of myocardial ischemia with hunger,control group,10 in each.After 30 minutes of treatment,the indexes of the hemorheology were determined.Results The changed environmental factors,hypoxia,high temperature,hunger,presented an increasing effect on the blood viscosity,plasma viscosity,blood high shear reduced viscosity,blood low shear reduced viscosity and equation K value of ESR(P

Polychlorinated biphenyls(PCBs) is one of persistent organic pollutants which are widely exist in environment.This review described PCBs characteristics and toxicity on animals and human livers.Before now,it was identified that PCBs caused liver damage and hepatocarcinogenicity for animals.However,occupational studies and long-term,low level exposure studies to human beings have found no direct correlation between PCBs exposure and liver damage and carcinogenicity,only accidental environmental exposures have found increased mortality of liver disease.But high morbidity of human liver cancer and detected PCBs in the environment were reported in some regions.It is evident that more researches should be done.

Nowadays,family detergent has become necessary content in families,a great deal of detergent,specifically,chemical synthesis detergent is used and goes into water and pollutes the water and severely affects aquatic creatures.The active component of family detergent is linear alkylbenzenesulfonate(LAS).Recently,family detergent is emphasized for its toxicity and pollution.This paper summarized the status of toxicity and pollution of family detergent.

Whether low dose of endocrine disruptors(EDs) have adverse effects on human health is a hot spot in recent ten years.Many researchers consider that EDs lower than non-observed adverse-effects level can produce biological effects.In this paper the author expatiated the concept and mechanism of low dose effect of EDs,summarized some noso-biological-effects of low dose EDs to children.At the same time,some arguments of this field were introduced.

Objective To study the genetic toxicity of aluminium trichloride on reproductive cells of male mice.Methods Twenty healthy male KM mice were randomly divided into four groups,the experimental groups(50,75,100 mg/kg AlCl3 respectively) and the normal control group(0.9% NS),all of the groups were exposed by intraperitoneal injection,2 consecutive days with one day interval,for 2 weeks.The variation of body weight and index of testicle was observed,olive tail moment was evaluated by comet assay while sperm nucleus immaturity rate was examined by fluorescent staining sperm nucleus.Results Compared with the negative control group,the index of testicle in each AlCl3 treated group decreased significantly(P

Objective To know rural drinking water safety and the affecting factors in Guangxi Zhuang Autonomous Region.Methods The survey was conducted through a combination of census and spot-checks during January to May 2005,taking villages as the survey units,the basic situation of water supply,coverage of tap water,running of water supply facilities,and the distribution and types of water sources,pollution of water sources,water sources and beneficiary population were investigated.The water samples were collected and tested with related standard methods on July and November,2005.Results The total rural population in Guangxi Zhuang Autonomous Region was 41.424 0 million,13.858 1 million people were served with central water supply,accounted for 33.45%.There were 14 260 township and village level central water supply systems.Of these systems,only 1 157 had water purification facilities,accounted for 8.11%.A total of 475 water samples were tested,the eligible was 25.68%.The eligible rates were 23.71% and 27.57% in rainy and dry seasons,respectively.The bacteriological indexes were the main noneligible indexes,as for total coliform,the eligible rate was less than 40%.The rural population consuming unsafe drinking water was 17.768 6 million,accounted for 42.9%.Conclusion The drinking water safety in rural areas in Guangxi Zhuang Autonomous Region is to be solved urgently.Special focus should be paid to the construction and management of rural drinking water safety projects.

Objective To know the drinking water quality in the rural areas in Fujian Province in order to provide the scientific basis for water improvement in the rural areas.Methods Fourteen counties were selected in Fujian,2004,10 monitoring sites in each county based on the population proportion of different drinking water types.Sixteen indicators were determined for every water sample.Results In the 14 investigated counties,38.71% of total population drinking water supplied with surface water,and 61.29% with ground water source.Drinking water from centralized water supply system was supplied to 58.24% of total population.The qualified rate of water samples was 26.39% for total 288 water samples,35.38% for surface water samples and 18.99% for ground water samples respectively.The hygienic state of surface water was much better(P

Objective To know the hygienic condition of different kinds of drinking water plants in Shanxi Province.Methods In 2007,422 water plants and 2 083 secondary water supply units were selected and the information and data that provided by all Sanitation Institute for Health Inspection and Supervision in Shanxi Province were analyzed.Results The hygienic conditions of city's municipal administration water supply systems were the best.Total qualified rate of water quality was 97.67%.The hygienic conditions of rural school's homemade water supply systems were the worst,the qualified rates of all items in the program were the lowest.Most of them had no any analyst and laboratory for water quality test.Only 10.2% of them had water disinfection facilities.Total qualified rate of water quality was 75.32%.In most of water plants,the lack of water quality test facilities and disinfection facilities was one important problem in drinking water safety.In addition,the lack of clean and disinfection in secondary water supply systems was another problem.Conclusion The hygienic conditions of drinking water plans are unsatisfactory and should be improved in Shanxi Province.

Objective To survey the effect of innovation of rural water supply and latrine improvement to the control of the incidence of diarrheal disease in Sichuan Province,to provide the scientific basis to the prevention and treatment of diarrheal disease.Methods Research and analyze the condition of the rural water supply innovation,latrine improvement and the incidence of diarrheal disease on 12 administrative villages in Luojiang and Danling County from Dec.2006 to Sep.2007.Results Among the 1 659 houses under research,the main type of water supply is non-central water supply,accounting for 92.65%.The main origin of central water supply is underground water,accounting for 83.6%.Only 716 houses have sanitary latrine,accounting for 43.16%,the main type of sanitary latrine is marsh gas pool,accounting for 96.79%.The main type of non-sanitary latrine is dry latrine without leak,accounting for 92.79%.Mongzi,Longtan,Shihe and Meiwan are both water supply and latrine innovated countries,Yujiaan,Minghui are only latrine innovated countries,Mingyue,Wuying and Sanyan are noninnovated countries.During the 20 551 persons under research for four times,192 persons have diarrheal symptom.The annual incidence is 0.93%.The diarrheal disease for both water supply and latrine innovated country,either water supply or latrine innovated country,non-innovated country is 0.70%(48/6 872),0.91%(77/8 506),1.30%(67/5 173).There is significant discrepancy(?2=11.486,P0.05).The incidence of diarrheal disease of latrine improvement country is lower than none-latrine improvement country.There is significant discrepancy(?2=15.061,P

0.05).Conclusion The standard test methods are more effective in detecting G.lamblia than C.parvum.No G.lamblia and C.parvum contamination has been found in drinking water in the Tianjin and Shenyang.