The initial stage of Ag film growth on Cu(100). Ta(100) and Ta(110) single crystals as well as YBaCuO on Si single crystal covered by Pd was investigated in situ by means of LAS 600 surface analysis system with a sput...The initial stage of Ag film growth on Cu(100). Ta(100) and Ta(110) single crystals as well as YBaCuO on Si single crystal covered by Pd was investigated in situ by means of LAS 600 surface analysis system with a sputtering source in sample preparation chamber. The results show that the initial state for Ag / Cu(100) film growth is typical S-K model, for Ag / Ta(100) and Ag / Ta(110)they have the same S-K characteristics, but due to the different surface energies of two crystalline planes. there is some difference for Ag / Ta (100) and Ag / Ta(110). YBCO sputterjng process is rather complex and Cu is the first element appearing in the film.展开更多
When criminal suspects are being investigated for criminal responsibil- ity, they are the most vulnerable to infringement by public power. Thus, they need more special attention and protection. It is the in- evitable ...When criminal suspects are being investigated for criminal responsibil- ity, they are the most vulnerable to infringement by public power. Thus, they need more special attention and protection. It is the in- evitable requirement of the modern democratic rule of law, and also the inevitable historic choice of respecting and protecting human rights.展开更多
Tests and numerical simulations of super-critical adjust stage blade were carried out and the effect of bowed blade on flow characteristics and the secondary flow were analyzed. The simulation and test results show th...Tests and numerical simulations of super-critical adjust stage blade were carried out and the effect of bowed blade on flow characteristics and the secondary flow were analyzed. The simulation and test results show that the adjust stage blade with aft-loading and big front-edge radius has good flow characteristics by meridian shrink. The numerical studies were carried out with software of NUMECA in order to investigate the aerodynamic characteristics of adjust stage blades,which include prototype blade(tested blade) ,positive curved blade (15°) and negative curved blade(-15°) . The simulation results show that the positive curved blade forms a negative static pressure gradient in the lower region of the cascade along the blade height and a positive static pressure gradient in the upper region. This leads to the reduction of the streamwise vortices intensity and the aerodynamic load on both sides of the blade and the endwall. Therefore,the crosswise secondary flow losses of endwall can be decreased considerably.展开更多
Background:Although de novo stage IV breast cancer is so far incurable,it has entered an era of individualized treatment and chronic disease management.Based on systemic treatment,whether the surgical resection of pri...Background:Although de novo stage IV breast cancer is so far incurable,it has entered an era of individualized treatment and chronic disease management.Based on systemic treatment,whether the surgical resection of primary or metastatic foci of de novo stage IV breast cancer can bring survival benefits is currently controversial.We aimed to explore the clinicopathological factors and current status of the management of de novo stage IV breast cancer in China to provide a reference for clinical decisions.Methods:Based on the assistance of Chinese Society of Breast Surgery,a retrospective study was conducted to analyze the clinical data of patients with de novo stage IV breast cancer in 33 centers from January 2017 to December 2018.The relationship between basic characteristic(age,menstrual status,family history,reproductive history,pathological type,estrogen receptor[ER]status,progesterone receptor[PR]status,human epidermal growth factor receptor 2[HER2]status,Ki-67 percentage,and molecular subtype),and metastasis sites(lung metastasis,liver metastasis,and bone metastasis)was examined by Pearson Chi-square tests.Results:A total of 468 patients with de novo stage IV breast cancer were enrolled.The median age of the enrolled patients was 51.5 years.The most common pathological type of primary lesion was invasive carcinoma(97.1%).Luminal A,luminal B,HER2 overexpressing,and triple-negative subtypes accounted for 14.3%,51.8%,22.1%,and 11.8% of all cases,respectively.Age,PR status,and HER2 status were correlated with lung metastasis(χ^(2)=6.576,4.117,and 8.643 and P=0.037,0.043,and 0.003,respectively).Pathological type,ER status,PR status,and molecular subtype were correlated with bone metastasis(χ^(2)=5.117,37.511,5.224,and 11.603 and P=0.024,<0.001,0.022,and 0.009,respectively).Age,PR status,HER2 status,Ki-67 percentage,and molecular subtype were correlated with liver metastasis(χ^(2)=11.153,13.378,10.692,21.206,and 17.684 and P=0.004,<0.001,0.001,<0.001,and 0.001,respectively).Combined treatment with paclitaxel and anthracycline was the most common first-line chemotherapy regimen for patients with de novo stage IV breast cancer(51.7%).Overall,91.5% of patients used paclitaxel-containing regimens.Moreover,59.3% of hormone receptor-positive patients underwent endocrine therapy.Conclusions:In 2018,1.07% of patients from all studied centers were diagnosed with de novo stage IV breast cancer.This study indicated that 95.1% of patients received systemic therapy and 54.2% of patients underwent surgical removal of the primary lesion in China.展开更多
In the present paper, Charpy impact resistance of aluminum-epoxy laminated composites in both crack divider and crack ar-rester configurations has been investigated. In both configurations, an analytical investigation...In the present paper, Charpy impact resistance of aluminum-epoxy laminated composites in both crack divider and crack ar-rester configurations has been investigated. In both configurations, an analytical investigation has been carried out to evaluate the effects of layers thickness on impact resistance of the specimens. A model based on fuzzy logic for predicting impact re-sistance of the specimens has been presented. For purpose of building the model, training and testing using experimental re-sults from 126 specimens produced from two basic composites were conducted. The data used for the input data in fuzzy logic models are arranged in a format of 7 input parameters that cover the thickness of layers, the number of layers, the adhesive type, the crack tip configuration, the content of SiC particles, the content of methacrylated butadiene-styrene particles and the number of test trial. According to these input parameters, in the fuzzy logic model, the impact resistance of each specimen was predicted. The training and testing results in the fuzzy logic model have shown a strong potential for predicting impact resis-tance of aluminum-epoxy laminated composites.展开更多
文摘The initial stage of Ag film growth on Cu(100). Ta(100) and Ta(110) single crystals as well as YBaCuO on Si single crystal covered by Pd was investigated in situ by means of LAS 600 surface analysis system with a sputtering source in sample preparation chamber. The results show that the initial state for Ag / Cu(100) film growth is typical S-K model, for Ag / Ta(100) and Ag / Ta(110)they have the same S-K characteristics, but due to the different surface energies of two crystalline planes. there is some difference for Ag / Ta (100) and Ag / Ta(110). YBCO sputterjng process is rather complex and Cu is the first element appearing in the film.
文摘When criminal suspects are being investigated for criminal responsibil- ity, they are the most vulnerable to infringement by public power. Thus, they need more special attention and protection. It is the in- evitable requirement of the modern democratic rule of law, and also the inevitable historic choice of respecting and protecting human rights.
文摘Tests and numerical simulations of super-critical adjust stage blade were carried out and the effect of bowed blade on flow characteristics and the secondary flow were analyzed. The simulation and test results show that the adjust stage blade with aft-loading and big front-edge radius has good flow characteristics by meridian shrink. The numerical studies were carried out with software of NUMECA in order to investigate the aerodynamic characteristics of adjust stage blades,which include prototype blade(tested blade) ,positive curved blade (15°) and negative curved blade(-15°) . The simulation results show that the positive curved blade forms a negative static pressure gradient in the lower region of the cascade along the blade height and a positive static pressure gradient in the upper region. This leads to the reduction of the streamwise vortices intensity and the aerodynamic load on both sides of the blade and the endwall. Therefore,the crosswise secondary flow losses of endwall can be decreased considerably.
文摘Background:Although de novo stage IV breast cancer is so far incurable,it has entered an era of individualized treatment and chronic disease management.Based on systemic treatment,whether the surgical resection of primary or metastatic foci of de novo stage IV breast cancer can bring survival benefits is currently controversial.We aimed to explore the clinicopathological factors and current status of the management of de novo stage IV breast cancer in China to provide a reference for clinical decisions.Methods:Based on the assistance of Chinese Society of Breast Surgery,a retrospective study was conducted to analyze the clinical data of patients with de novo stage IV breast cancer in 33 centers from January 2017 to December 2018.The relationship between basic characteristic(age,menstrual status,family history,reproductive history,pathological type,estrogen receptor[ER]status,progesterone receptor[PR]status,human epidermal growth factor receptor 2[HER2]status,Ki-67 percentage,and molecular subtype),and metastasis sites(lung metastasis,liver metastasis,and bone metastasis)was examined by Pearson Chi-square tests.Results:A total of 468 patients with de novo stage IV breast cancer were enrolled.The median age of the enrolled patients was 51.5 years.The most common pathological type of primary lesion was invasive carcinoma(97.1%).Luminal A,luminal B,HER2 overexpressing,and triple-negative subtypes accounted for 14.3%,51.8%,22.1%,and 11.8% of all cases,respectively.Age,PR status,and HER2 status were correlated with lung metastasis(χ^(2)=6.576,4.117,and 8.643 and P=0.037,0.043,and 0.003,respectively).Pathological type,ER status,PR status,and molecular subtype were correlated with bone metastasis(χ^(2)=5.117,37.511,5.224,and 11.603 and P=0.024,<0.001,0.022,and 0.009,respectively).Age,PR status,HER2 status,Ki-67 percentage,and molecular subtype were correlated with liver metastasis(χ^(2)=11.153,13.378,10.692,21.206,and 17.684 and P=0.004,<0.001,0.001,<0.001,and 0.001,respectively).Combined treatment with paclitaxel and anthracycline was the most common first-line chemotherapy regimen for patients with de novo stage IV breast cancer(51.7%).Overall,91.5% of patients used paclitaxel-containing regimens.Moreover,59.3% of hormone receptor-positive patients underwent endocrine therapy.Conclusions:In 2018,1.07% of patients from all studied centers were diagnosed with de novo stage IV breast cancer.This study indicated that 95.1% of patients received systemic therapy and 54.2% of patients underwent surgical removal of the primary lesion in China.
文摘In the present paper, Charpy impact resistance of aluminum-epoxy laminated composites in both crack divider and crack ar-rester configurations has been investigated. In both configurations, an analytical investigation has been carried out to evaluate the effects of layers thickness on impact resistance of the specimens. A model based on fuzzy logic for predicting impact re-sistance of the specimens has been presented. For purpose of building the model, training and testing using experimental re-sults from 126 specimens produced from two basic composites were conducted. The data used for the input data in fuzzy logic models are arranged in a format of 7 input parameters that cover the thickness of layers, the number of layers, the adhesive type, the crack tip configuration, the content of SiC particles, the content of methacrylated butadiene-styrene particles and the number of test trial. According to these input parameters, in the fuzzy logic model, the impact resistance of each specimen was predicted. The training and testing results in the fuzzy logic model have shown a strong potential for predicting impact resis-tance of aluminum-epoxy laminated composites.
