The Songnen Plain lying in the central part of the Northeast China Plain covers an area of about 170 000 km2. There are vast patches of saline land, which are still in the process of enlargement. The spread of saline ...The Songnen Plain lying in the central part of the Northeast China Plain covers an area of about 170 000 km2. There are vast patches of saline land, which are still in the process of enlargement. The spread of saline land has already caused the worsening of ecoenvironment and hindered agricultural development in the region. The paper analyses background factors of natural environment that caused the spread of saline land according to the information of Landsat TM images. The result shows that among the three kinds of lakes the fault lake is the background factor of natural environment that causes the spread of saline land under arid conditions. Its lakebeach meadows could not recover from the excessive utilization in farming and stockraising. The proposed countermeasures to prevent and control the spread of saline land serve as biological steps or water conservancy facilities to protect the lakebeach meadows of the fault lakes from being artificial excessively utilized.展开更多
With the proposal of Internet-based CET,more emphasis need be attached to listening skill.In order to improve stu dents' listening skill,linguistic knowledge,psychological factors and cultural background knowledge...With the proposal of Internet-based CET,more emphasis need be attached to listening skill.In order to improve stu dents' listening skill,linguistic knowledge,psychological factors and cultural background knowledge,as three key factors affect ing Chinese ESL students,have been analyzed and the improving solutions have been suggested.展开更多
Based on the statistical characteristics of remote sensing data, the spatial geometric structure characteristics of spectral data and distribution of background, interference and alteration information in characterist...Based on the statistical characteristics of remote sensing data, the spatial geometric structure characteristics of spectral data and distribution of background, interference and alteration information in characteristic space were researched through the analysis of two-dimensional and three-dimensional scatter diagrams. The results indicate that the hyper-space of remote sensing multi-data aggregation belongs to low-dimensional geometric structure, i.e. hyperplane form, and anomalous point groups including alteration information usually dissociate out of hyperplane. Scatter diagrams of remote sensing data band are mainly presented as two distribution forms of single-ellipse and dual-ellipse. Clarifying the relations of three objects of background, disturbance and alteration information in remote sensing images provides an important technical thought and guidance for accurately detecting and extracting remote sensing alteration information.展开更多
In 152 primary liver cancer (PLC)cases and 1: 1 matched controls, risk factors for PLC as well as relevent pedigree data were investigated. The results showed that in relatives of cases,PLC accumulative mortality was ...In 152 primary liver cancer (PLC)cases and 1: 1 matched controls, risk factors for PLC as well as relevent pedigree data were investigated. The results showed that in relatives of cases,PLC accumulative mortality was much higher than that in those of controls (0. 46% vs. 0. 07%, P< 0. 001 ). Of the cases, the rate in consanguineous relatives was 0. 55 %, but in non-consanguineous relatives it was 0. 08 % (P< 0. 01 ); and with alienating of consanguinity a regularly downward gradient of the rate could be observed ; in addition, an independent effect of inheritance remained significant when environmental factors were controlled by Logistic regression and stratification skill. And with an inheritance background, the role of some environmental factors as HBV infection, psychic trauma was reinforced significantly. These results provided further evidence for understanding the association between inheritance and PLC.展开更多
From the perspective of cultural background and cross-cultural communicative awareness, this paper discusses the cultural factors in the context of foreign affairs translation. It points out translator should adapt th...From the perspective of cultural background and cross-cultural communicative awareness, this paper discusses the cultural factors in the context of foreign affairs translation. It points out translator should adapt themselves to different cultural backgrounds and fully convey the cultural denotations and connotations in foreign affairs texts, which can achieve successful conversation from the source language to the target language.展开更多
To document the prevalence of risk factors for cardiovascular disease in an unstudied community, a survey of 130 participants from different areas of Sierra Leone was performed. The focus was on cardiovascular disease...To document the prevalence of risk factors for cardiovascular disease in an unstudied community, a survey of 130 participants from different areas of Sierra Leone was performed. The focus was on cardiovascular disease because its prevalence had not been studied and World Health Organization (WHO) reports on Non-Communicable Diseases (NCD) prevalence were extrapolations and not from actual data. Resting blood pressure, fasting blood glucose, fasting lipid levels and carotid intima media thickness (CIMT) were measured. Mean blood pressure in men was slightly lower than in women (132/87 mmHg and 139/90 mmHg respectively), mean fasting blood glucose levels were <100 mg/dL in both groups and mean fasting total cholesterol was higher in women than in men (206 mg versus 193.5 mg/dL). Mean fasting low density lipoprotein levels were similar in both groups, 129 mg/dL in men and 133 mg/dL in women. Mean fasting high density cholesterol was 47.2 mg/dL in men and 55.5 mg/dL in women and CIMT values were similar in both groups, with 60% above the 75th percentile. This study demonstrated a prevalence of cardiovascular risk factors in this population with mean BP placing both men and women in pre-hypertension or stage 1 hypertension ranges and elevated mean low density lipoprotein levels. Fasting total cholesterol, blood glucose and high density lipoprotein were within normal ranges. Mean CIMT values for men and women placed them at risk for subclinical atherosclerosis.展开更多
Several factors influence listening comprehension of English radio news broadcasts. The study adopted a questionnaire to investigate students' recognition of these factors. On the basis of this analysis, students ...Several factors influence listening comprehension of English radio news broadcasts. The study adopted a questionnaire to investigate students' recognition of these factors. On the basis of this analysis, students put emphasis on vocabulary and background knowledge and they were aware of the approaches to better listening comprehension and making some practical preparations before doing the listening tasks. However some differences exist between the effective listeners and less-effective listeners,specially regarding to speech rate and out-of-class relevant practice.展开更多
基金Supported by the National Natural Science Foundation of China (No. 10431010) Education Ministry Key Project (No. 05JJD910001) +1 种基金 National Philosophy and Social Science Foundation grant (No. 07BTJ002) 2006 New Century Excellent Talent Program and Funds supported by Renmin University of China (No. 2006031611)
文摘The Songnen Plain lying in the central part of the Northeast China Plain covers an area of about 170 000 km2. There are vast patches of saline land, which are still in the process of enlargement. The spread of saline land has already caused the worsening of ecoenvironment and hindered agricultural development in the region. The paper analyses background factors of natural environment that caused the spread of saline land according to the information of Landsat TM images. The result shows that among the three kinds of lakes the fault lake is the background factor of natural environment that causes the spread of saline land under arid conditions. Its lakebeach meadows could not recover from the excessive utilization in farming and stockraising. The proposed countermeasures to prevent and control the spread of saline land serve as biological steps or water conservancy facilities to protect the lakebeach meadows of the fault lakes from being artificial excessively utilized.
文摘With the proposal of Internet-based CET,more emphasis need be attached to listening skill.In order to improve stu dents' listening skill,linguistic knowledge,psychological factors and cultural background knowledge,as three key factors affect ing Chinese ESL students,have been analyzed and the improving solutions have been suggested.
基金Project(2006BAB01A06) supported by the National Science and Technology Pillar Program Project during the 11th Five-Year Plan PeriodProject(1212010761503) supported by Land and Resources Investigation Project
文摘Based on the statistical characteristics of remote sensing data, the spatial geometric structure characteristics of spectral data and distribution of background, interference and alteration information in characteristic space were researched through the analysis of two-dimensional and three-dimensional scatter diagrams. The results indicate that the hyper-space of remote sensing multi-data aggregation belongs to low-dimensional geometric structure, i.e. hyperplane form, and anomalous point groups including alteration information usually dissociate out of hyperplane. Scatter diagrams of remote sensing data band are mainly presented as two distribution forms of single-ellipse and dual-ellipse. Clarifying the relations of three objects of background, disturbance and alteration information in remote sensing images provides an important technical thought and guidance for accurately detecting and extracting remote sensing alteration information.
文摘In 152 primary liver cancer (PLC)cases and 1: 1 matched controls, risk factors for PLC as well as relevent pedigree data were investigated. The results showed that in relatives of cases,PLC accumulative mortality was much higher than that in those of controls (0. 46% vs. 0. 07%, P< 0. 001 ). Of the cases, the rate in consanguineous relatives was 0. 55 %, but in non-consanguineous relatives it was 0. 08 % (P< 0. 01 ); and with alienating of consanguinity a regularly downward gradient of the rate could be observed ; in addition, an independent effect of inheritance remained significant when environmental factors were controlled by Logistic regression and stratification skill. And with an inheritance background, the role of some environmental factors as HBV infection, psychic trauma was reinforced significantly. These results provided further evidence for understanding the association between inheritance and PLC.
文摘From the perspective of cultural background and cross-cultural communicative awareness, this paper discusses the cultural factors in the context of foreign affairs translation. It points out translator should adapt themselves to different cultural backgrounds and fully convey the cultural denotations and connotations in foreign affairs texts, which can achieve successful conversation from the source language to the target language.
文摘To document the prevalence of risk factors for cardiovascular disease in an unstudied community, a survey of 130 participants from different areas of Sierra Leone was performed. The focus was on cardiovascular disease because its prevalence had not been studied and World Health Organization (WHO) reports on Non-Communicable Diseases (NCD) prevalence were extrapolations and not from actual data. Resting blood pressure, fasting blood glucose, fasting lipid levels and carotid intima media thickness (CIMT) were measured. Mean blood pressure in men was slightly lower than in women (132/87 mmHg and 139/90 mmHg respectively), mean fasting blood glucose levels were <100 mg/dL in both groups and mean fasting total cholesterol was higher in women than in men (206 mg versus 193.5 mg/dL). Mean fasting low density lipoprotein levels were similar in both groups, 129 mg/dL in men and 133 mg/dL in women. Mean fasting high density cholesterol was 47.2 mg/dL in men and 55.5 mg/dL in women and CIMT values were similar in both groups, with 60% above the 75th percentile. This study demonstrated a prevalence of cardiovascular risk factors in this population with mean BP placing both men and women in pre-hypertension or stage 1 hypertension ranges and elevated mean low density lipoprotein levels. Fasting total cholesterol, blood glucose and high density lipoprotein were within normal ranges. Mean CIMT values for men and women placed them at risk for subclinical atherosclerosis.
文摘Several factors influence listening comprehension of English radio news broadcasts. The study adopted a questionnaire to investigate students' recognition of these factors. On the basis of this analysis, students put emphasis on vocabulary and background knowledge and they were aware of the approaches to better listening comprehension and making some practical preparations before doing the listening tasks. However some differences exist between the effective listeners and less-effective listeners,specially regarding to speech rate and out-of-class relevant practice.
