Objective To evaluate left atrial function in essential hypertension patients with different patterns of left ventricular geometric models by real-time three-dimensional echocardiography （RT-3DE） and left atrial tra...Objective To evaluate left atrial function in essential hypertension patients with different patterns of left ventricular geometric models by real-time three-dimensional echocardiography （RT-3DE） and left atrial tracking （EAT）.展开更多
Taking the main land of Europe as the region to be studied, the potential of the new satellite gravity technique: satellite-to-satellite tracking (SST) and improving the accuracy of regional gravity field model with t...Taking the main land of Europe as the region to be studied, the potential of the new satellite gravity technique: satellite-to-satellite tracking (SST) and improving the accuracy of regional gravity field model with the SST models are investigated. The drawbacks of these models are discussed. With GPM98C as the reference, the gravity anomaly residuals of several other models, the latest SST global gravity field models (EIGEN series and GGM series), were computed and compared. The results of the comparison show that in the selected region, some systematic errors with periodical properties exist in the EIGEN and GGM’s S series models in the high degree and order. Some information that was not shown in the classic gravity models is detected in the low and middle degree and order of EIGEN and GGM’s S series models. At last, the effective maximum degrees and orders of SST models are suggested.展开更多
The response surface methodology(RSM) combined with bioassays was employed to optimize the extraction process of crude fucose-containing sulphated polysaccharides(c FCSP) from Sargassum fusiforme. The central composit...The response surface methodology(RSM) combined with bioassays was employed to optimize the extraction process of crude fucose-containing sulphated polysaccharides(c FCSP) from Sargassum fusiforme. The central composite design(CCD) was used with four variables, five levels, and four responses. The four variables were p H value of hydrochloric acid solution, extraction temperature(℃), ratio of liquid to raw material(m L g^(-1)), and extraction time(h), respectively. Chemical and bioassay indices were used in combination as the response parameters, which included the yield of c FCSP, fucose content, proliferation rate of spleen cells, and lipopolysaccharide-induced proliferation of splenocytes. The experimental data were fitted to a second-order polynomial equation using multiple regression analysis, and examined using the appropriate statistical methods. The best extraction conditions were as follows: the p H value of hydrochloric acid solution was 3.50; the extraction temperature was 100℃; the ratio of liquid to raw material was 15.00 m L g^(-1) and the extraction time was 2.50 h. The experimental yield was close to the predicted from the model. The extract could promote spleen lymphocyte proliferation, especially the lipopolysaccharide-induced lymphocyte proliferation in vitro, which suggested that its immunomodulatory effect on B lymphocytes. Therefore, c FCSP extracted from S. fusiforme could be utilized as an immunostimulant in functional foods and pharmaceutical industry in future.展开更多
Objective:To study the clinical value of Technetium-99m sestamibi myocardial perfusion single photon emission computed tomography(SPECT) in diabetes with suspected coronary artery diseases.Methods:Seventy-eight diabet...Objective:To study the clinical value of Technetium-99m sestamibi myocardial perfusion single photon emission computed tomography(SPECT) in diabetes with suspected coronary artery diseases.Methods:Seventy-eight diabetic patients complicated with cardiac symptoms or electrocardiogram(ECG) abnormalities and suspected coronary heart disease hospitalized in the department of endocrinology from January,2008 to December,2008 were investigated.Technetium-99m sestamibi myocardial perfusion SPECT was performed in all patients.Exercise stress test was done in 35 cases(group A).Adenosine stress test was done in 43 cases(group B).Results:The positive rates in the two groups were 54.29%(19/35) and 53.48%(23/43),respectively.There was no statistic difference between the 2 groups(P>0.05).The abnormality rates in male and female groups were 63.04% and 28.13%,respectively(P<0.01).Eighty-six segments of perfusion abnormality were detected in 38 positive patients.Four segments of fixed defect were found in 4 cases.Conclusion:As non-invasive method,myocardial perfusion SPECT can play an important role in the treatment of diabetes with suspected coronary artery disease.展开更多
The paper study communication protocol, the structure of the circuit, antenna design of radio frequency identification technology （RFID）, and puts forward a scheme based on IOT application： RFID logistics tracking ...The paper study communication protocol, the structure of the circuit, antenna design of radio frequency identification technology （RFID）, and puts forward a scheme based on IOT application： RFID logistics tracking system. Finally, the paper study the logistics distribution center information management model from three aspects of the system design objectives, system function analysis and system architecture design based on RFID.展开更多
基金Supported by the Natural Science Foundation of Liaoning ProvinceChina(2013023010)
文摘Objective To evaluate left atrial function in essential hypertension patients with different patterns of left ventricular geometric models by real-time three-dimensional echocardiography （RT-3DE） and left atrial tracking （EAT）.
基金Supported by the National Natural Science Foundation of China (No.40574005 No.40304001 +1 种基金 No.40374006 No.40234039) .
文摘Taking the main land of Europe as the region to be studied, the potential of the new satellite gravity technique: satellite-to-satellite tracking (SST) and improving the accuracy of regional gravity field model with the SST models are investigated. The drawbacks of these models are discussed. With GPM98C as the reference, the gravity anomaly residuals of several other models, the latest SST global gravity field models (EIGEN series and GGM series), were computed and compared. The results of the comparison show that in the selected region, some systematic errors with periodical properties exist in the EIGEN and GGM’s S series models in the high degree and order. Some information that was not shown in the classic gravity models is detected in the low and middle degree and order of EIGEN and GGM’s S series models. At last, the effective maximum degrees and orders of SST models are suggested.
基金supported by the National High Technology Research and Development Program of China (863 Program) (2013AA093003)
文摘The response surface methodology(RSM) combined with bioassays was employed to optimize the extraction process of crude fucose-containing sulphated polysaccharides(c FCSP) from Sargassum fusiforme. The central composite design(CCD) was used with four variables, five levels, and four responses. The four variables were p H value of hydrochloric acid solution, extraction temperature(℃), ratio of liquid to raw material(m L g^(-1)), and extraction time(h), respectively. Chemical and bioassay indices were used in combination as the response parameters, which included the yield of c FCSP, fucose content, proliferation rate of spleen cells, and lipopolysaccharide-induced proliferation of splenocytes. The experimental data were fitted to a second-order polynomial equation using multiple regression analysis, and examined using the appropriate statistical methods. The best extraction conditions were as follows: the p H value of hydrochloric acid solution was 3.50; the extraction temperature was 100℃; the ratio of liquid to raw material was 15.00 m L g^(-1) and the extraction time was 2.50 h. The experimental yield was close to the predicted from the model. The extract could promote spleen lymphocyte proliferation, especially the lipopolysaccharide-induced lymphocyte proliferation in vitro, which suggested that its immunomodulatory effect on B lymphocytes. Therefore, c FCSP extracted from S. fusiforme could be utilized as an immunostimulant in functional foods and pharmaceutical industry in future.
文摘Objective:To study the clinical value of Technetium-99m sestamibi myocardial perfusion single photon emission computed tomography(SPECT) in diabetes with suspected coronary artery diseases.Methods:Seventy-eight diabetic patients complicated with cardiac symptoms or electrocardiogram(ECG) abnormalities and suspected coronary heart disease hospitalized in the department of endocrinology from January,2008 to December,2008 were investigated.Technetium-99m sestamibi myocardial perfusion SPECT was performed in all patients.Exercise stress test was done in 35 cases(group A).Adenosine stress test was done in 43 cases(group B).Results:The positive rates in the two groups were 54.29%(19/35) and 53.48%(23/43),respectively.There was no statistic difference between the 2 groups(P>0.05).The abnormality rates in male and female groups were 63.04% and 28.13%,respectively(P<0.01).Eighty-six segments of perfusion abnormality were detected in 38 positive patients.Four segments of fixed defect were found in 4 cases.Conclusion:As non-invasive method,myocardial perfusion SPECT can play an important role in the treatment of diabetes with suspected coronary artery disease.
文摘The paper study communication protocol, the structure of the circuit, antenna design of radio frequency identification technology （RFID）, and puts forward a scheme based on IOT application： RFID logistics tracking system. Finally, the paper study the logistics distribution center information management model from three aspects of the system design objectives, system function analysis and system architecture design based on RFID.
