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In this century, China started facing five major challenges in the energy field: energy supply, shortage of liquid fuel, environmental pollution, green house gas (GHG) emission, and energy supply in rural areas.
      
Role of rural solid waste management in non-point source pollution control of Dianchi Lake catchments, China
      
The autonomic-hormonal and psychophysiological status of 94 13- to 17-year-old urban and rural schoolchildren was studied.
      
The results of two-year field (in rural, urban, and marine atmospheres) and accelerated tests of contact and volatile inhibitors with steel, brass, and aluminum and magnesium alloys are reported.
      
The protective value of contact inhibitors only slightly depends on the atmospheric corrosivity, though the latter increased from rural to marine according to the ratio 1∶1.4∶5.7.
      
The results of the field tests of a plain carbon steel in the rural and marine atmospheres of the Northern Vietnam are discussed.
      
Improved Prediction of Ozone Levels in Urban and Rural Atmospheres
      
Analysis based on monthly and annual averages led to a new equation recommended for predicting ozone levels over rural, urban, and industrial areas of Europe as a function of NO2 concentration and Sun parameter.
      
Analysis of the Genetic Demographic Structure of Rural Populations Neighboring the Semipalatinsk Nuclear Test Site
      
Rural populations neighboring the Semipalatinsk nuclear test site were used as a model to develop and test an integrated population-genetic approach to analysis of the medical genetic situation and environmental conditions in the areas studied.
      
Information on the dynamics, frequency, and structure of congenital malformations (CMs) and chromosomal diseases in two generations of rural populations from the Semipalatinsk region was obtained for the first time.
      
Polymorphism of three rural populations of the Tuva Republic was examined using a set of five autosomal Aluinsertions at the ACE, PLAT,PV92, APOA1,and F13Bloci.
      
Mean values of local inbreeding calculated from Malecot's model of isolation by distance were 0.00124 and 0.00377 for the urban and rural populations, respectively, of the districts studied.
      
Frequencies of surnames were studied in 64 sel'sovets (rural communities; a total of 33 thousand persons) of 52 raions (districts) of 22 oblasts (regions) of the European part of Russia.
      
The ethnic assortativeness values in the town of Alatyr' and the rural area of the district were 1.17 and 1.21, respectively, for Russians; 1.14 and 4.82, respectively, for Chuvashes; and 1.33 and 2.45, respectively, for Mordovians.
      
The parameters of isolation by distance were a = 0.000189 and b = 0.009591 for the urban and a = 0.000318 and b = 0.00919 for the rural area.
      
A total of 1622900 subjects, including 1306200 from the urban and 316700 from the rural population, were tested.
      
Substantial differences between urban and rural populations in respect of the population load of HDNS and its nosological structure were not observed.
      
In rural and small urban populations, the coefficients of marriage migration in the 19th century were an order of magnitude lower than in the 20th century.
      
The immigration to urban populations was maximum in the late 1960s (m = 0.745 in small towns and m = 0.680 in Kursk), and that to rural populations, in the 1990s (m = 0.344).
      
 

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