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31, Based on the model to calculate mixture loss, a new calculation model of pressure drop for stratified flow in horizontal wellbore has been developed by applying the momentum conservation equation.

32, A simple formula for ray path is derived from the Euler equation in continuous stratified medium.

33, The fourth part is an investigation on the state-of-art of the information-literacy education in the Higher Teacher Education Institutions in Chongqing by adopting stratified random sampling.

34, Methods A total of 310 teachers from 4 middle schools in Huaibei City were selected with stratified random sampling to undergo a survey with teacher job burnout questionnaire(MBI-ES).

35, The result shows that stratified scavenging reduces fuel loss during air exchange greatly lowing the fuel consumption rate and enlarging the air-fuel ratio range.

36, According to the characteristic of equipment and stratified sampling theory, the separate ratio estimator is applied to the appraisal of machinery and equipment.

37, Corneal epithelial cells formed unilaminar and stratified layers and cellular joins.

38, All the possible guided waves to propagate in stratified half-space media are investigated using a bisection method.

39, Methods A questionnaire survey was conducted stratified random sampling among 1689 people in 2 counties.

40, This might be because Yoruba society is highly patriarchal and stratified, producing a lot of social pressure for genetically similar men and women to mate.

41, Methods: The self-designed questionnaires were used to anonymously investigate on 179 students in 19 academies of the university who were selected by stratified random sampling.

42, In this paper, numerical manifold method, a new numerical analysis method, is used to simulate the toppling failure process of a stratified rock slope.

43, Methods: Using stratified sampling method to determine the survey places, The schistosomiasis in people and livestock were surveyed by the methods of nylon bag incubation and top - tube incubation.

44, At present, the methods of random sampling, systematic sampling and stratified sampling are widely used in remote sensing sampling.

45, Due to piedmont area stratified soil layers are present at the prism excavation depth.

46, Methods Middle School students in Jiangsu Rural Areas were investigated with SCL-90 by stratified sampling.

47, The main principle of selective withdrawing is analyzed and the layout of march-past intake and eclipsed form intake are introduced on the basis of stratified flow theory.

48, The obturated haemocoel was enclosed by the continuous and stratified basement membrane under the coelothelium and endothelial.

49, Based on the main wiring circuit analysis of a typical substation, component failure model is established for substation outage, repairing, and normal working by stratified state enumeration method.

50, The diurnal vertical migration of planktonic Ostracoda is studied based on the analysis of stratified samples of zooplanktons in the IONESS system.

51, Taking the abstraction of geological strata as a starting point, early models had, describes Kim, "a layered or stratified stone ground plane that stepped down with the sloe of the canal."

51, Sentencedict.com is a sentence dictionary, on which you can find nice sentences for a large number of words.

52, Methods Multistage sampling and stratified sampling were used and information was gathered by interview with questionnaires.

53, To further reduce the time pressure for a larger training data set, the algorithm creates a smaller training data set via the primary model based on a stratified sample.

54, As a result, parts of the dust cloud have become stratified, pointing toward Merope.

55, Stratified sampling method was applied to investigate immunization status of ecdemic children and its affecting factors in Baoshan District.

56, Method : By stratified cluster sampling, a retrospective epidemiological survey was conducted on 145 patients who had used Nabumetone in the treatment.

57, Methods With a method of stratified random sampling, a questionnaire survey was conducted among 786 students from 8 middle schools in Beijing.

58, The authors take the students of Gansu Lianhe University as objects of study, using stratified random sampling method taking samples of 1000.

59, Methods Stratified cluster sampling was used to investigate villagers with questionnaire.

60, In a sense, observing the rigidly stratified dress rules is to observe the order and law of the autocratical domination.