Research on Effects of Incidence to Turbine Guide Cascade Aerodynamic Performance

When steam turbine set runs, the changes of incidence angle could cause the change of the flow loss in the cascade passages. It was necessary to research the flow performance in steam turbine passages by changing incidence angle. With the help of hydrodynamic software CFX, we could conduct numerical simulations at three incidence angles of 20°, 0°, and -20°, respectively. The computation results indicated that the blades with aft-loading profile had a good adaptation to the incidence angle. After changing incidence angle, the incidence angle affected the distribution of static surface pressure less within most of the scope of pressure surface and suction surface than other location. However, incidence angle −20° would decrease pressure loss within a narrow range, and incidence angle 20° would increase pressure loss

Clinical effect of Fuzheng quyu therapy in patients undergoing radiotherapy after cervical carcinoma surgery

Purpose: To examine the clinical effect of Fuzheng Quyu therapy in patients undergoing radiotherapy after cervical carcinoma surgery.Methods: One hundred and twenty patients who underwent radiotherapy after cervical carcinoma surgery were selected randomly and divided evenly into control and study groups. Patients in the control group underwent radiotherapy only, whereas those in the study group received treatment designed to nourish healthy vital energy and eliminate blood stasis in addition to radiotherapy. Changes in the coagulation index of the two groups were recorded after treatment. The clinical effects and the incidence of adverse events were compared between the groups.Results: The plasma prothrombin time and activated partial thromboplastin time improved after treatment in the study group to greater extents than in the control group. The levels of D-dimer, blood platelets and fibrinogen were lower after treatment in the study group than in the control group (p < 0.05). Improvement in Karnofsky Performance Score and quality of life score of the study group was superior to that of the control group. The proportion of patients who required drug intervention was much lower in the study group (0.83 %) than in the control group (28.33 %) (p < 0.05). The incidence of adverse reactions was much lower in the study group (6.7 %) than in the control group (35.0 %, p < 0.05).Conclusion: Herbal therapy designed to nourish vital energy and eliminates blood stasis relieves highlevel blood coagulation, and also improves quality of life (QoL) in patients undergoing radiotherapy after cervical carcinoma surgery, thus suggesting its potential clinical applications.Keywords: Fuzheng, Blood stasis, Cervical carcinoma, Radiotherapy, Quality-of lif

3D Random Occlusion and Multi-Layer Projection for Deep Multi-Camera Pedestrian Localization

Although deep-learning based methods for monocular pedestrian detection have made great progress, they are still vulnerable to heavy occlusions. Using multi-view information fusion is a potential solution but has limited applications, due to the lack of annotated training samples in existing multi-view datasets, which increases the risk of overfitting. To address this problem, a data augmentation method is proposed to randomly generate 3D cylinder occlusions, on the ground plane, which are of the average size of pedestrians and projected to multiple views, to relieve the impact of overfitting in the training. Moreover, the feature map of each view is projected to multiple parallel planes at different heights, by using homographies, which allows the CNNs to fully utilize the features across the height of each pedestrian to infer the locations of pedestrians on the ground plane. The proposed 3DROM method has a greatly improved performance in comparison with the state-of-the-art deep-learning based methods for multi-view pedestrian detection

Intraspecific variations in leaf functional traits of Cunninghamia lanceolata provenances

BackgroundStudies on intra-specific variability in leaf functional traits is important to evaluate adaptation of the species to predicted climate change, and to develop long-term conservation strategy. The main objectives were to investigate the relationship between the functional traits leaves and C, N, P stoichiometry of Chinese fir from different geographical provenances and their relationship with the main environmental factors of provenance.ResultsIn this study, we measured 12 leaf functional traits on 36-year-old Cunninghamia lanceolata trees from 13 provenances. Analysis of variance (ANOVA) was performed to examine the variability. Redundancy analysis (RA) was computed to examine the relationship between geo-climatic factors of provenance origin and leaf functional traits while Pearson's correlation coefficient was computed to assess inter-trait correlations. The results showed statistically significant differences (P < 0.01) in intraspecific leaf traits among provenances, except leaf P content. The relationships among leaf traits are consistent with the general trend observed in the leaf economic spectrum. Mean annual temperature appeared to be a key factor that influences intraspecific leaf traits variability compared to mean annual precipitation.ConclusionThese results provide useful insights about adaptation of leaf trait of Chinese fir in a changing climatic condition. Thus, our findings shed light on the importance of interspecific trait variability in Chinese fir and the potential effect of climate change

The Distribution of Transcutaneous CO2 Emission and Correlation With the Points Along the Pericardium Meridian

AbstractThis study aimed to understand energy metabolism distribution along the pericardium meridian and verify the correlation between the body surface (points), and classic meridian theory. A highly sensitive CO2 instrument was used to measure the transcutaneous CO2 emission at 13 points along the pericardium meridian line (12 points on the line and one point beyond the line) and 13 control points beside them. Results showed that the distribution of transcutaneous CO2 emission is highly related to the position on the body. Transcutaneous CO2 emission is significantly higher at P7 and P3, than the control points beside them. The points along the meridian and the points beside them were clustered with relative distance by SAS statistics software. Two distance matrixes were then obtained. The correlation coefficients between the points along the line and between the control points were calculated. The results showed that the 13th point beyond the line was far from the 12 points on the line (distance, 0.24), while acupoints on the line clustered earlier when compared with the non-acupoints. The average correlation coefficients among the acu-points was 0.65 which was significantly higher than 0.56, among the non-acupoints. No such characteristics were found among the control points. It was concluded that there is a strong correlativity of energy metabolism activity between the body surfaces along the meridian, and an even stronger correlativity between the acupoints on the meridian