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Endometrial injury is the main fact leading to the damage of endometrial basal layer. It is usually caused by traumatic treatment, inflammatory injury, radiation, chemical drug-related injury, and delivery-related diverticulum. The use of hyaluronic acid, decellularized matrix, amniotic membrane, platelet-rich plasma, mesenchymal stem cells (especially scaffold-based therapeutic delivery) has been proved to reduce post-injury scar formation and promote endometrial growth and repair, which provides a new therapeutic strategy for repairing the damaged endometrium with improved tolerability and fertility outcomes.

The external friction behavior between the interface and powders is affected by the properties of the powders, the surface roughness of dies, the relative motion speed, temperature, and pressure. Unreasonable external friction behavior may cause the wear of powder processing equipment and the uneven density distribution of products. To explore the external friction behavior of powders, the research progress of powder external friction coefficient was thoroughly investigated, and the testing methods of powder external friction coefficient were summarized. According to the loads, the testing methods of powder external friction coefficient are composed of small load testing methods and heavy load testing methods. The small load testing methods include slope method and plate method, and the heavy load testing methods include rotation method, shear method, and closed mold method. The principle, testing equipment, and important conclusions of those various testing methods were briefly described in this paper. The results show that, the test methods under the small load are only suitable for the external friction coefficient of powders with low relative density, and the pressing force in the test is generally less than 100 times of powder weight. The test methods under the heavy load are more commonly used for measuring the external friction coefficient of powders with high relative density; the pressing force of polymer materials is usually 0.5×103~1.0×105 times of powder weight, while that of metal materials is 105~107 times of powder weight.

【Objective】In this paper, machine learning method is applied to 30 Tbit/s (60 × 500 Gbit/s) Nyquist Dual Polarization-16 Quadrature Amplitude Modulation (DP-16QAM) system after 6 300 km transmission in G. 654E optical fiber. Nonlinear channel equalization is used to reduce the transmission Bit Error Rate (BER).【Methods】Referring to the "receptive field" mechanism of convolution neural network, the size of "convolution core" is designed, and the data set is constructed according to the divided sampling data. The artificial neural network is constructed by optimizing the parameters. The one-to-one data corresponding to the transmission and reception of different wavelengths, different optical signal-to-noise ratios, and different fiber input powers in the C-band are collected. Refer to the classic full-connection neural network structure, the neural network is constructed according to the data structure of the data set. The network fitting is carried out for the real part and the imaginary part respectively. After training stage, the test data is sent into the network, and the performances are compared with the traditional methods.【Results】Two kinds of neural networks are used to fit the transmission BER under 60 different wavelength transmission conditions of C band frequency from 191.562 5 to 195.987 5 THz. Compared with Maximum Likelihood Sequence Estimation (MLSE), Network 1 has an average reduction of 23% in BER, and Network 2 has an average reduction of 41% in BER. A frequency of 193.812 5 THz is then selected for the calculation of the fiber input power ranging from 14 to 19 dBm. The average improvement in network 1 and network 2 are 32% and 52%, respectively. Under different optical signal-to-noise ratios, Network 1 has an average improvement of 30%, and Network 2 has an average improvement of 57%.【Conclusion】The two neural networks have excellent performance in nonlinear equalization of coherent transmission systems. At the same time, the number of network layers and nodes will jointly affect the fitting results. Increasing the number of layers and nodes can obtain better fitting results, but the corresponding parameters, training time and the required space will also increase. Therefore, in the application, the actual situation should be considered to choose between the fitting performances and the model attributes.

Based on the stratified survey data of Pleonomus canaliculatus in the soil of winter wheat and summer maize rotation field in North China Plain, the vertical activity of Pleonomus canaliculatus in the soil of winter wheat and summer maize rotation fields, the correlation between meteorological conditions and farmland planting management are observed and analyzed, and effects of Pleonomus canaliculatus damage on the yield of winter wheat are analyzed. By combining the insect population weight index with population density index, characteristics of the harm-dormancy activity of Pleonomus canaliculatus are investigated comprehensively in different soil layers. Results show that in the winter wheat and summer maize rotation growing season, there are 3 harm and 3 dormant periods, 3 harm periods appear in the winter wheat regreening-jointing period, the summer maize seedling period and the autumn seedling period of winter wheat, and 3 dormant periods appear in winter wheat overwintering period, winter wheat ripening-harvesting period and summer maize filling-ripening period. Among 3 harm periods, winter wheat regreening-jointing period is the most serious, which could lead to serious yield reduction of winter wheat. Winter is warmer, and spring temperature is warmer early, so Pleonomus canaliculatus exhibits characteristics of going down late and coming up early, which shortens the dormant period in winter and prolong the harmful activity period. Soil temperature, moisture, and the relationship between food and source affect the damage, dormancy, and feeding activities of Pleonomus canaliculatus. The suitable soil moisture content for it is about 15% to 18%, and the suitable soil temperature is 14 to 18 ℃. In summer, Pleonomus canaliculatus may enter dormancy or reduce activity due to lack of food sources or high temperatures and humidity of soil, Pleonomus canaliculatus can enter the dormancy or reduced activity. The analysis of winter wheat yield reduction caused by Pleonomus canaliculatus damage shows that the yield reduction rate is increased by 5.1% with an increase of 10 m-2 in insect population density or with an increase of 1.0 g·m-2 in insect weight. Results provide reference for agricultural production in North China to address climate change and scientifically manage farm to avoid diseases and pests.

Objective Shanghai Master Plan (2017-2035) evaluates land use performance using the index of land use area for construction of GDP per unit area across the city. However, since rail transit stations are more concerned with passenger throughput, this index may not be suitable for evaluating land use performance at the stations. Therefore, it is necessary to select appropriate indicators to evaluate the land use performance of rail transit stations. Method By utilizing data on passenger throughput at Shanghai rail transit stations and combining with AOI (area of interest) data, POI (point of interest) data, and surrounding land use planning and utilization situation, the passenger throughput per unit area is defined as the indicator for evaluating the land use performance of stations. The land use performance of rail transit stations in central urban area (within the Outer Ring Inner Region) of Shanghai is evaluated, the performance of general stations and interchange stations is compared, and a causal analysis of the land use performance results of different stations is conducted. Result & Conclusion The type and intensity of land use around the stations have a significant impact on station performance. Rail transit stations located near major transportation hubs, economic development zones, industrial parks, and large commercial districts exhibit higher land use performance. Conversely, stations surrounded by areas with lower land development intensity and dense residential communities demonstrate lower land use performance.

The aim of this study was to investigate the impact of Lycium barbarum leaves flavonoids (LBLF) on lipid accumulation in normal and oleic acid-induced HepG2 cells. The experiment was divided into six groups as follows: blank, model, positive control, low-, medium-, and high-dose LBLF. Oil red O staining was performed to assess the aggregation of lipid droplets in each group, and lipid levels and oxidative stress indicators were measured. Finally, real-time polymerase chain reaction (real-time PCR) and Western blot were used to detect the expression of mRNAs and proteins associated with lipid synthesis. The results indicated that LBLF could decrease the increase in the levels of triglycerides (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), malondialdehyde (MDA) and reactive oxygen species (ROS) induced by oleic acid in HepG2 cells. It also could increase high-density lipoprotein cholesterol (HDL-C), superoxide dismutase (SOD), glutathione, and catalase levels. Additionally, Western blot results suggested that LBLF intervention could up-regulate phosphorylated adenosine 5’-monophosphate (AMP)-activated protein kinase (p-AMPK) and AMPK levels, and down-regulate the protein expression of sterol regulatory element-binding protein 1c(SREBP-1c), peroxisome proliferator-activated receptor γ (PPARγ), and CCAAT enhancer binding protein alpha (CEBPα). Real-time PCR results indicated that LBLF intervention down-regulated the expression of genes such as ACC, FAS, SREBP-1c, SCD-1, PPARγ, and CEBPα. In conclusion, LBLF could partially alleviate lipid metabolism disorder in oleic acid-induced HepG2 cells by regulating the expression levels of lipid synthesis and oxidation-related genes.

ObjectiveTo investigate the prevalence of dental caries among preschool children in Chongming District， Shanghai， and to analyze the related factors influencing dental caries in preschool children in Chongming District， in order to provide references and suggestions for the prevention of dental caries in preschool children in Chongming District.MethodsFrom January to April 2022， 939 preschool children from 5 kindergartens in Chongming District of Shanghai were selected as the research objects through random cluster sampling. The dental caries prevalence rate and related risk factors of dental caries in preschool children were studied through oral examinations and questionnaire surveys.ResultsThe prevalence rate of dental caries among the 939 preschool children was 45.69%. The prevalence of dental caries in preschool children was not related to gender but increased with age （P

In order to improve the wear resistance of Ti-25Nb-3Zr-2Sn-3Mo(TLM) titanium alloy, the composite coating on surface of alloy was prepared by surface mechanical composite strengthening(SMCS) process. The microstructure, micromechanical properties and tribological properties of the composite coating were studied. Results showed that TiN/Sn composite coatings could be successfully prepared on the alloy surface using surface mechanical composite strengthening technology. As the Sn content increased, the thickness and roughness of the composite coating continued to increase, and the thickness of 10%～40% Sn coatings was 9.08, 14.05, 18.33 and 23.55 μm, respectively. Additionally, the surface hardness of 10%～40% Sn coatings was 590, 529, 465 and 400 HV, respectively, which was higher than that of the matrix hardness(～230 HV). Furthermore, the wear amounts of the composite coating decreased first and then increased with the increase of Sn content, and the 20% Sn coating had the lowest wear amount. In the dry wear test, the wear mechanism of original sample was mainly adhesive wear and accompanied by abrasive wear, while the wear mechanism of the composite reinforced sample was abrasive wear, adhesive wear and accompanied by oxidation wear.

Carbon nanotubes (CNTs) and aluminum composite powders were prepared by both wet ball milling and dry ball milling. The CNTs reinforced aluminum matrix (CNTs/Al) composites were fabricated by sparking plasma sintering (SPS) combined with hot extrusion process, and the relationship of preparation process, microstructure, and mechanical properties was explored systematically. The results show that, compared with the dry ball milling, the wet ball milling can better disperse CNTs, and significantly reduce the damage to the structure of CNTs. The ethanol ball milling medium has the cooling effect to significantly refine the grain size and reduce the cold welding of the powders, resulting in the excellent mechanical properties of the composites. The tensile strength of 2%CNTs/Al composites sintered and hot extruded after wet ball milling for 6 h reaches 207 MPa.

The CO2 emissions of China power industry is the main source of CO2 emissions. The CO2 emissions of thermal power plants account for the largest proportion in the power industry. Under the goal of “double carbon”, CO2 accounting technology can realize the intuitive judgment of CO2 emissions in thermal power plants, provide important support for CO2 emission reduction in thermal power plants, promote thermal power plants to participate in carbon trading, and drive regional economic development. Combined with domestic and foreign policies, the implementation progress of the current general CO2 accounting methods was discussed. The problems existing in the CO2 accounting methods of thermal power plants based on carbon accounting and supplemented by carbon monitoring were summarized. The key and difficult points of the application of CO2 accounting technology in thermal power plants were analyzed. Finally, the development and application of CO2 accounting technology in thermal power plants were prospected.

Research findings indicate that in multi-unit systems experiencing subsynchronous oscillations （SSO）， the units tend to exhibit similar torsional vibration frequencies. Therefore， an analysis was conducted on the interactive effects among shaft systems of units with similar frequencies， as well as the mechanisms of system series compensation， electrical distances between units. Additionally， the paper delved into the mechanisms through which system series compensation， electrical distances between units， and similar torsional vibration frequencies impact the SSO. Firstly， based on characteristic matrices， the expression for the complex torque coefficients of two parallel thermal power units in the system was derived. Subsequently， the simplified complex torque coefficient method for a single unit was extended to encompass multi-unit systems， resulting in a streamlined expression for the electrical damping of dual thermal power units. The analysis further examined the influence of other units on the damping of the target unit， revealing that series compensation， electrical distances between units， and similar torsional vibration frequencies all exert an influence on system damping and stability. Finally， the mechanisms through which influencing factors affect the subsynchronous stability of the system were validated through numerical examples.

As a sort of intelligent material, NiTi shape memory alloys (SMAs) are widely used in the fields of aerospace, medical devices and construction due to their functional properties such as excellent superelasticity, shape memory effect and biocompatibility. Superelasticity is characterized by a macroscopic recovery of the original shape despite large deformations, and is much larger than the recoverable elastic strain of common metals. The shape memory effect is the mutual transformation of austenite and martensite phases under temperature excitation, which is categorized into one-way, two-way and all-round shape memory effects according to the macroscopic deformation. The biocompatibility of NiTi SMAs is reflected in the low elastic modulus and low biotoxicity, which can be used in medical devices such as orthodontics, orthopedics, and cardiovascular stents. In order to fully exploit the applications of these functional properties, researchers are developing intelligent structures based on NiTi SMAs. This paper focuses on the review of the intelligent structures' applications corresponding to the different functional properties of NiTi SMAs, and introduces and discusses functional properties, problems and application fields. Meanwhile, damping and hydrogen storage properties of NiTi SMAs are explained in detail. Finally, this paper underlines the problems that need to be focused on and addressed in the applications of NiTi SMAs in various engineering fields: using additive manufacturing to tailoring the microstructure to achieve the stability improvement of superelasticity; providing theoretical guidance for the stable shape memory effect through the establishment of the intrinsic model, and further optimizing the structure to achieve the macroscopic amplification of the shape memory effect; as well as improving the corrosion resistance of NiTi SMAs in biological environments and the promotion of medical applications. Therefore, a great deal of interdisciplinary research is needed to promote the personalization and functional customization of NiTi SMAs in different applications.

【Objective】 To explore the spatio-temporal variation of fractional vegetation coverage (FVC) and its influencing factors in the Yiluo River basin from 2002 to 2021, middle and lower reaches of the Yellow River. 【Method】 In this research, the data of Landsat series satellites in 2002, 2007, 2011, 2016 and 2021 were selected and combined with pixel binary model to extract the vegetation coverage of this basin. The coefficient of variation and linear regression analysis method were used to reveal the spatial-temporal variation of vegetation coverage in this basin. The influence of natural factors and human activity factors on the temporal and spatial changes is analyzed. 【Result】 From 2002 to 2021, the source mountains in the Western and Southern parts of the basin are high FVC areas, while the FVC is low along the river course from West to East and in the central and Northern parts of the basin. The Eastern part is low FVC area. The proportion of high and relatively high FVC area was 65.29%. Medium FVC accounted for 17.66%, low and relatively low coverage accounted for 17.05%. The overall vegetation coverage was high, and the average FVC shows a decreasing trend, and then gradually increases. The FVC of the basin was basically stable in 44.14%, improved area in 32.25%, and slightly degraded area in 17.27%. The proportion of obvious degradation area was 6.34%. The influence degree of natural factors on FVC from high to low is elevation, temperature, precipitation and slope.The FVC increases with the increase of elevation, precipitation and slope, and decreases with the increase of temperature. The positive effect of human activities on FVC was slightly greater than the negative effect, which became an important factor promoting its growth trend. 【Conclusion】 From 2002 to 2021, the vegetation coverage in the Yiluo River Basin was relatively high and gradually increased. Elevation, temperature and precipitation were the main factors affecting its spatial distribution, and human activities promoted its increase.

Coagulation sedimentation is a critical pretreatment step in the advanced treatment of landfill leachate. Traditional coagulation processes for treating landfill leachate have drawbacks such as low water recovery，loose flocs，and low pollutant removal efficiency. A delayed stirring pelleting coagulation process of landfill leachate was put forwarded based on the theory of mechanical syneresis. Through long periods of high-intensity mechanical agitation，it could homogenize suspended solids. The results showed that the removal efficiency of SS，turbidity，and COD could reach 92.33%，99.92%，and 35.84% under optimal conditions of pH=12，stirring strength of 1 500 r/min，PAC and PAM dosage of 3 000 mg/L and 60 mg/L. The image particle measurement system revealed that under optimal conditions，the d50 of floc was 3.76 mm and the sedimentation velocity was 20.08 mm/s，which was approximately 60% higher than that of conventional coagulation. According to the floc sedimentation rate，projection area and effective particle size，the three-dimensional fractal dimension was 2.890 9 and the effective density was 0.087 6 g/cm3. It was found that the floc produced by delayed stirring pelleting coagulation had fast sedimentation speed and high density，and the supernatant recovery rate after floc could increase from 45% conventional coagulation to 85%.

Neoadjuvant therapy is a preoperative systemic treatment for patients with breast cancer. This therapy has greatly improved the clinical outcomes of human epidermal growth factor receptor 2 (HER2)-positive breast cancer, which is associated with poor prognosis. Currently, dual anti-HER2 antibodies, including trastuzumab and pertuzumab, combined with non-anthracycline chemotherapy is one of the standard regimens to achieve high pathologic complete response rate and satisfactory efficacy. The combination of trastuzumab with tyrosine kinase inhibitors, antibody-drug conjugate drugs, or immunotherapy combined with target therapy, under the indications of reasonable biomarkers, is effective for HER2-positive breast cancer. In this article, we briefly reviewed neoadjuvant therapy in the dual-targeting therapy era and discussed its future perspectives.

ObjectiveTo investigate the satisfaction of both service providers and users in community health service centers through questionnaires， and to analyze the reasons， so as to put forward suggestions for improving satisfaction.MethodsSampling was conducted in 247 community health service centers in 16 districts of Shanghai， and data were collected from employees and patients through on-site questionnaires.ResultsA total of 10 334 eligible questionnaires were collected from community health service centers， of which 7 712 were from patients and 2 622 were from employees. In 2021， the public's satisfaction with community health service centers was 96.51 points， and the satisfaction of employees was 94.08 points. The public expressed lower satisfaction with the availability of essential drugs for outpatient services， while the staff were less satisfied with their salary and benefits， work recognition， and career development. Regarding family doctor services， 73.38% of the public had signed up for family doctor services， while 23.57% of the public did not know about the family doctor services， and 16.18% believed it was necessary to improve the publicity of basic public health services.ConclusionThe public's overall satisfaction with the service of community health services is gradually increased. The basic medical services of community health are recognized by residents. Drug allocation needs to be improved urgently， and publicity and promotion need to be further strengthened. The overall satisfaction of employees is high， but further improvement is needed in terms of salary and benefits， work recognition， and career development.

Objective To summarize the clinical features of a family with Basan syndrome and to analyze mutation of the SMARCAD1 gene. Methods The Basan family was diagnosed at Dermatology Hospital, Southern Medical University in 2022. Backgroud data was collected, and clinical and genetic characteristics were analyzed. Meanwhile, a retrospective analysis of features and associated genetic mutations reported in all patients with Basan syndrome was conducted. Results A total of 18 patients with Basan syndrome were identified, including 9 males and 9 females. All 18 patients had no fingerprints at birth (18/18, 100%), and some patients had knuckle pads, palmoplantar hyperkeratosis, nail atrophy, nail separation, and longitudinal nail ridges. Symptoms vary in severity. At the same time, it was found that c.-10+1G > T (as well as c.378+1G > T)mutations appeared on the intron 1 of the SMARCAD1 (NM_020159.5) gene in 7 patients, resulting in abnormal splicing. Conclusions This article provides help for the early diagnosis of Basan syndrome and helps to improve the diagnosis and differentiation level of clinicians.

For studying the deposition behaviour of dual-carbides cermet particles on coating microstructure and properties，the surface morphology and cross-sectional microstructure of the original powder and the flat particle on the low-carbide steel substrate were analyzed，and the microstructure，phase constitution and properties of HVOF sprayed micro-nano WC-Cr3C2-CoNi coating were investigated systemically.Results showed that the particles deposited on the substrate showed a caky shape with smooth and convex surface，radial sputtering streaks appeared around the particles，and the thickness of flat particles was much smaller than their radial dimensions.In addition，the section microstructure of the coating presented certain lamellar characteristics，and the interfaces between flat particles，hard phase and bond phase，flat particle and substrate and different hard phases bonded well.The coating had the main phase of WC，some decarburized phases，and the amorphous phase of Cr2O5.Moreover，the microhardness，elastic modulus，fracture toughness，adhesive strength and wear weight loss of the coating were (13.19±0.52) GPa，(145.17±3.89) GPa，(2.59±0.64) MPa·m1/2，(38.41±0.51) MPa and (6.08±0.68) mg respectively.Compared to WC-Co12 coating，the decomposition of WC and the decarburized phases decreased significantly in the HVOF sprayed micro-nano WC-Cr3C2-CoNi coating and the coating’s mechanical properties were obviously improved.

Background With the aging of the population, the prevalence of atrial fibrillation is increasing year by year. As the "gatekeepers" of community residents' health, grassroots medical staff with a high level of knowledge about atrial fibrillation is particularly important for standardized management of atrial fibrillation. Objective To analyze the mastery of atrial fibrillation-related knowledge among grassroots medical staff in Fengxian District, Shanghai and its influencing factors, thus, providing a theoretical basis for subsequent training work. Methods This study is a cross-sectional survey study. From June to July 2021, a systematic sampling method was used to select 1 393 grassroots medical staff as the research objects including general practitioners, nurses, pharmacists, public health physicians and other medical staff (imaging technology/physician, laboratory technician, traditional Chinese medicine doctor and so on) from 21 community health service centers in Fengxian District, Shanghai. This study used a self-developed electronic questionnaire to investigate them. The contents of the questionnaire included general information and knowledge related to atrial fibrillation (basic knowledge about atrial fibrillation, knowledge about anticoagulant therapy and knowledge about rhythm/heart rate control) . This study compared the mastery of atrial fibrillation-related knowledge among grassroots medical staff in different positions, and used univariate Logistic regression, ordinal multiple classification or binary Logistic regression to analyze the influencing factors of grassroots medical staff's mastery of atrial fibrillation-related knowledge. Results A total of 1 383 valid questionnaires were recovered, and the valid questionnaire recovery rate was 99.28%. Among 1 383 grassroots medical staff, 506 cases (36.59%) were general practitioners. 54.88% (759/1 383) , 97.69% (1 351/1 383) and 69.63% (963/1 383) failed in the basic knowledge about atrial fibrillation, knowledge about anticoagulation and knowledge about heart rhythm/heart rate control, respectively. There were statistically significant differences in the scores of atrial fibrillation knowledge, anticoagulation knowledge and heart rhythm/heart rate control knowledge among grassroots medical staff in different positions (P

ObjectiveTo analyze the mortality data of children under 5 years in Chongming District， Shanghai， and to analyze the main causes of death of children under 5 years， so as to provide scientific basis for reducing the mortality of children under 5 years in Chongming District.MethodsData of children under 5 years in Chongming District from 2011 to 2020 were collected from the Maternal and Child Health Information System of Chongming District， Shanghai. The mortality rate and main causes of death of children under 5 years in Chongming District were analyzed retrospectively.ResultsFrom 2011 to 2020， the average mortality rate of children under 5 years in Chongming District was 6.51‰， and the overall trend was stable. The mortality rate of children under 5 years with non-local household registration （11.44‰） was significantly higher than that of children under 5 years of age with local household registration （4.88‰） （P

ObjectiveTo investigate the relationship between the perpetrator’s sex, victim’s position and slashing location as well as anthropometric parameters on distance and space required for slashing, to provide the theoretical basis for the judgment of whether the crime scene was consistent with the criminal activity space.MethodsThe kinematics data of 12 male and 12 female subjects slashing the neck of standing and supine mannequins as well as the chest of the standing mannequins with a kitchen knife were obtained by using a 3D motion capture system. The relationship between the perpetrator’s sex-victim’s position, the perpetrator’s sex-slashing location, and anthropometric parameters and the distance and space required for the slashing were analyzed by two-factor repeated measures ANOVA and Pearson correlation analysis respectively.ResultsCompared with slashing the neck of supine mannequins, the distance （L） and normalized L （l） of slashing the neck of standing mannequins were greater, while vertical distance （LVR） and normalized LVR （lVR） of the knife side were smaller. Compared with slashing the neck of standing mannequins, the L and l slashing the chest of standing mannequins were greater, while LVR and lVR were smaller. Horizontal distance （LHR） and normalized LHR （lHR） of the knife side in males were greater than that in females. Height and arm length were positively correlated with L, LHR, and LVR when striking the standing mannequins.ConclusionWhen slashing the neck of supine or standing victims, the slashing distance is shorter and the slashing height is greater. Furthermore, the distance and space required for slashing are correlate with anthropometric parameters.

BackgroundRadiation shielding design is an important part of reactor design, and the development of new nuclear power technology for various kinds of reactors has put forward new demands on radiation shielding optimization design methods.PurposeThis study aims to overcome the shortcomings of the traditional multi-objective optimization methods for shielding structures in dealing with the optimization problem of 3D shielding structures, such as slow optimization speed, difficulty in convergence, and poor globalization.MethodsBased on the non-dominated sorting genetic algorithm Ⅲ (NSGA-Ⅲ), the many-objective optimization method for 3D shielding structure design for nuclear reactor was proposed. The Monte Carlo N-Particle Transport Code (MCNP) was employed to analyze comparative performance of the NSGA-III optimization method on the basis of the 3D shielding structure model of nuclear reactors, and shield weight, volume and radiation dose rate in specific regions were taken as the optimization targets.Results & ConclusionsThe numerical simulation results show that the NSGA-III based optimization method for 3D shielding structure design can search for the Pareto-optimal front more efficiently and stably, providing a new idea for the optimization of radiation shielding design.

The optical transmission system based on all-band is considered to be one of the methods to effectively improve the transmission capacity of optical communication. In addition of the C and L bands, the using of other bands for transmission can fully tap the transmission potential of the existing optical fiber network and solve the bottleneck problem of large capacity communication network. The realization of its key technologies and systems is conducive to promoting the industrialization process of related technologies, which has broad economic benefits. This paper analyzes and discusses the current research status of multi-band optical transmission technology. And then as the focus, the performance difference of S、C and L band is studied by experiments. Based on the devices designed for C and L bands, the experiment of 40 km transmission system covering on S、C and L band is completed by using Polarization Division Multiplexed 16 Quadrature Amplitude Modulation (PDM-16QAM) modulation format, and the transmission capacity can reach 122.4 Tbit/s. The multi-band transmission capability of G. 652.D optical fiber is verified, which provicles an experimental basis for further research on multi-band optical transmission technology.

Objective To summarize the experience and effect using 3D parametric surface planar topological guide plate technology in fenestrated/branched endovascular aortic repair (F/B EVAR) to repair aortic arch and thoracoabdominal aortic lesions involving important aortic branches. Methods From August 2020 through April 2022, 17 patients [14 males and 3 females, mean age of(61.06±11.23)(39-78) years] with complex aortic lesions involving important branches were treated in both Nanjing Drum Tower Hospital and Union Hospital. There were 8 cases with aortic arch aneurysms 4 cases and dissections 4 cases, respectively, and 9 cases with thoracoabdominal aortic aneurysms 5 cases and dissections 4 cases, respectively. Six cases were urgent operation and 11 cases were selective operation. Before operation, 3D parametric surface planar topological guide plate was made according to aortic computed tomography angiography. Under the guidance of planar guide plate, pre-fenestrated and external/internal branched and other endovascular aortic repair was performed. Totally, 50 fenestrated/branched stent grafts were planted. Results All operations were completed without conversion to open surgery. Average operative time was (4.57±2.29)(1.50-10.67) h. There was no renal insufficiency, paraplegia and loss of branch arteries. One patient (5.88%) died during perioperative period. Within the follow-up, there were 2 cases (11.76%) of endoleak type Ⅰc and type Ⅲc, respectively. Conclusions F/B EVAR under the guidance of 3D parametric surface planar topological guide plate is a minimally invasive treatment. The technology is more accurate than traditional measurement and positioning, faster than 3D printing guidance, and safe and reliable shown in the follow-up.

Aeroelastic modelling and stability analysis of wing with morphing trailing edge have attracted more and more attention. In order to explore the methods and characteristics between active flutter suppression of wings with morphing trailing edge and conventional control surface, a small aspect ratio wing with morphing trailing edge is taken as the object to research. Firstly, a structural finite element model is established, and the deformation modes of morphing trailing edge and conventional control surface are introduced to calculate the unsteady aerodynamic forc-es by employing subsonic doublet lattice method. Then, the rational function fitting based on minimum-state method is used to transform the frequency-domain model to time-domain model, and the aeroelastic models of two configuration wings are established. Finally, a linear quadratic Gaussian (LQG) method is used to design the con-trol law to perform the active flutter suppression, and the property difference of two control modes are analyzed.The results show that the wing with morphing trailing edge can increase the critical speed of flutter by 22%, the control effect is better than conventional control surface, and the required defection angle is smaller.

The effect of air pollution on human health becomes a severe public health challenge due to rapid development in global economy and industrialized urbanization. Particulate matter (PM) is one of the major air pollutants and its renal toxicity has gained accumulating attention. Epidemiological evidence identified that the PM contributes to the development and progression of chronic kidney disease (CKD). This paper reviews the effects of PMs (PM10, PM2.5 and PM1) on CKD and its underlying mechanisms, which provides evidence for control of PM and strategy of managing CKD.

The phase change thermal storage technology has broad application prospects in the field of solar thermal power generation and the fins can effectively increase the charge and release rate of the phase change heat storage. However, the dynamic nonlinear characteristics of phase change heat storage seriously restrict the optimization of fin structures. Therefore, this paper proposed a fast optimization algorithm for optimizing the fin structure of the phase change heat storage. The algorithm takes the shortest distance from the phase change material to the fin and the cold source as the optimization objective, and uses the genetic algorithm to optimize the structure of fin. This method solves the time-consuming problem of traditional numerical optimization methods. The one-level Y-shaped fin in a shell and tube phase change heat storage was taken as an example. Under the premise of meeting a certain amount of fin material, the width ratio and length of each branch and the angle between branches of Y-shaped fin were selected as the design variables, and the influence of the number of fins was analyzed. The results show that the optimization objective proposed in this paper is feasible, and the optimized fin structure presents an arrow shape. Under the heat release conditions studied in this paper, compared with the traditional Y-shaped fins, the optimized fin structure can shorten the complete solidification time by 41.3%-62.1% when the number of fins is 1-3.

Multi-line lasers were applied to the on-line defect detection for steel rails instead of single-line laser,which solved the problem of "pseudo defects" due to the vibration of rails under the mode of single-line laser. Images of multi-line lasers captured by camera were processed to realize the online detection and the accurate defect feature area was acquired with steps of the extraction of strip centers,detection of difference algorithm,discrimination between real and pseudo defects,image mosaic,etc. Images of the defect area were extracted by the cross-correlation and self-correlation information of laser curves,and there was no need for the step of depth mapping under the single-line mode,so the problem of "fault detection" caused by the vibration of rails was solved fundamentally. The technique is applied to on-line detection of defects for the bottom side of steel rails,and the detection rate is much higher than manual detection.

Objective: To analyze the effects of arginine-glycine-aspartic acid (RGD) modification on anti-hepatocarcinoma activity of tumstatin peptide 19 (T-19) and to comparatively analyze the effects of tumor suppressor peptide 19 (T-19) and RGD modified-T-19 (RGD-T-19) on the proliferation, invasion, migration of on liver cancer SK-Hep-1 cells. Methods: T-19 and RGD-T-19 were synthesized by Fmoc solid-phase method and separated and identified using high-performance liquid chromatography and mass spectrometry. SK-Hep-1 cells were routinely cultured and treated with 0, 50, 100, 150, 200, and 250 mg/mL of T-19 and RGD-T-19, respectively. The cells were divided into control group (0 mg/mL), 50 mg/mL group, 100 mg/mL group, 150 mg/mL group, 200 mg/mL group, and 250 mg/mL group. CCK-8 assay and clone formation test were used to detect the effects of T-19 and RGD-T-19 on the viability and proliferation of SK-hep-1 cells. The invasion and migration of SK-Hep-1 cells were observed by scratch and Transwell test. The mRNA expression of cellular matrix metalloproteinases MMP-2 and MMP-9 was detected by qPCR. The protein expression of COX-2, MMP-2, MMP-9, TIMP-1, and TIMP-2 was detected by Western blot. Results: The synthesized T-19 and RGD-T-19 were identified to be of high purity by mass spectroscopy. Both T-19 and RGD-T-19 significantly inhibited the proliferation, migration, and invasion abilities of SK-Hep-1 cells, suppressed the protein expression of COX-2 and both the mRNA and protein expression of MMP-2, and MMP-9, but promoted the protein expression of TIMP-1 and TIMP-2 (P < 0.05, P < 0.01, P < 0.001). Notably, the inhibitory or promoting effects of RGD-T-19 were significantly stronger than those of T-19 (P < 0.05). Conclusion: T-19 and RGD-T-19 synthesized by Fmoc solid-phase method were highly pure and eligible. Both T-19 and RGD-T-19 can inhibit the proliferation, invasion, and migration of SK-Hep-1 cells, with better effects of RGD-T-19 than T-19. [ABSTRACT FROM AUTHOR]

In order to observe the status of tobacco leaves exactly in real time and set appropriate curing parameters accordingly in the process of flue-curing, a CNN-LSTM model for identifying tobacco flue-curing stages based on Convolutional Neural Network and Long Short-Term Memory Neural Network was developed. An image acquisition device composed of industrial cameras and light sources was used to collect tobacco image data during curing, and the acquired image data were categorized into 10 curing stages according to the color and texture changes of tobacco leaves. The CNN-LSTM model was verified and compared with three conventional recognition models: CNN, ResNet50 and Inception-ResNet v2. The results showed that: 1) For the 10 flue-curing stages, the recognition accuracies of the training and verification sets of the CNN-LSTM model reached 99.55% and 98.70%, respectively. The recognition accuracy and average F1 score of the test set reached 99.58% and 99.36%, respectively, which were 1.17 and 1.72 percentage points higher than those of the Inception-ResNet v2 model. 2) The number of samples which were incorrectly judged by the CNN-LSTM model was far less than that by the other three models, and most of them fell in adjacent curing stages. This method supports the rapid and accurate identification of tobacco flue-curing stages. [ABSTRACT FROM AUTHOR]

In recent years, with the large-scale implementation of conservation tillage measures and crop straw crushing in North China, the winter wheat and summer corn are planted in two crops per year, creating a favorable environment for feeding and habituating for the Pleonomus canaliculatus. As the temperature in autumn, winter and spring of Gucheng Station in Hebei Province alternates between cold and warm from 2018 to 2019, the minimum temperature is significantly higher, inducing the explosive occurrence of the Pleonomus canaliculatus in the wheat field. According to the investigation of spring wheat field excavation, the maximum density of insect population is 144 heads·m-2, the maximum weight of insect population is 18.764 g·m-2. Among 58 investigation points, densities of 57 points exceed 5 heads·m-2, which calls for control measures. The density of insects in the jointing-harvest period is the highest during the booting period, followed by the jointing period, and that of the harvest period is the lowest. The oldest larvae have a maximum length of 34.68 mm, and a maximum width of 4.9 mm, 4.68 mm longer and 0.90 mm wider comparing to existing record respectively. The density of insect populations in the continuous cropping winter wheat and summer maize gramineous crops is 35.3 to 40.4 heads·m-2, which is significantly higher than that of soybean, corn, and winter wheat recreation grounds. The peanut and spring corn lands are more than 5 times higher than the soybean insect population density, and the weight of insect population is more than 10 times higher. Yield measurement in mature wheat fields shows the grain yield is reduced by 36.8%. When the insect population density increases by 10 heads·m-2, grain yield decreases by 4.824%. When insect population weight increases by 1 g·m-2, grain yield reduction increases by 3.871%, and 10% increase of plant pest will make the grain yield reduction rate increase by 11.587%.

A novel drive power supply is proposed for full bridge module of IGBT，traditional drive power supply adopts flyback topology or single primary side and multiple second side of transformer.The flyback topology only transmits energy to the secondary side when the switch is off which leads to poor transient performance.For transformer,the spatial distribution of 6 groups of driving power sources is too dense, and the electrical clearance and creepage path are difficult to meet the requirements. A driving power based on infineon FS400R07A3E3 full bridge module was designed in this paper. Firstly, the working principle and parameter calculation of each module was analyzed. Then the rationality of design on the simulation software was verified. Finally, prototype testing shows that the power supply has good adjustment rate and output accuracy which can drive IGBT stably.

The shield tunnel boring will produce certain disturbance to the ground, causing surface settlement and uplift deformation. In order to predict the surface settlement caused by the double-bore tunnel beneath the existing road and through the fine sand stratum, a double-bore Peck formula was established, relying on the shield tunnel project of Xiong'an-Daxing international airport express line, and combined with the engineering monitoring data. The results show that, for the project where the left and right lines successively pass through the existing roads, the surface settlement of the section exhibits a "W" shape, and the axial settlement of the two tunnels is the largest. When the latter line is bored through the same section, it will increase the surface settlement of the first boring. Based on Peck's formula, combined with the measured data, a two-bore Peck's formula is established to predict the surface settlement of the section when the two bores penetrate he existing road and cross the fine sand stratum. This provides a certain theoretical basis for the tunneling projects in similar strata and engineering. [ABSTRACT FROM AUTHOR]

In order to reduce the electricity cost of cotton spinning enterprise, the largest demand for electricity in the cotton spinning enterprise ring spindle spinning frame main drive system was modified for energy saving. New permanent magnet synchronous motor was used to replace the original three-phase asynchronous motor, and the original main shaft belt drive was changed to coupling direct drive. At the same time, motor current, temperature and spinning frame energy consumption of the process in production C 20 tex yarn were tested and analyzed. The test results showed that the current of the main shaft motor was reduced by 4 A~8 A compared before the modification. The motor temperature was decreased significantly and the heat loss was reduced about 25%~40%. The electricity consumption per kilogram yarn was reduced about 9% when producing C 20 tex yarn, which effectively achieved the purpose of reducing energy consumption of the spinning frame. [ABSTRACT FROM AUTHOR]

The harmless treatment and resource utilization of spent cathode carbon from the overhaul slag of aluminum electrolytic cells is the bottleneck for achieving green and sustainable development in the electrolytic aluminum industry. The migration patterns of toxic components and toxic elements in spent cathode carbon for aluminum electrolysis are introduced. The technical principle, research status, advantages and disadvantages of high temperature fire method, liquid-phase leaching method and collaborative treatment method are summarized, and the future development trend is prospected. [ABSTRACT FROM AUTHOR]

本研究欲將個人特性納入既有的中學生考試壓力架構之中，並檢驗中學生之考試壓力與其個人特性之關係，驗證高考試壓力且中成就的學生，其個人特性上有特定的組型，包含較高的不確定性、神經性、低自尊、外控性，以及較低的外向性。本研究採分層隨機抽樣，共 召募了 1,858 名臺灣九年級學生完成問卷填答。在問卷上，本研究採用中學生考試壓力量表，以測量學生考試壓力的程度，同時以自編之 26 題二元計分的個人特性問卷，作為個人特性的測量；在學業成就方面，本研究以學生在 2014 年之國中教育會考分數作為指標；在資料分析方面，本研究以潛在類別分析，以學生考試壓力、學業成就及個人特性之作答資料，將學生進行分類。結果發現，以本研究所蒐集之資料而言，將學生分為四類最為適當，並將這四類學生分別命名為高壓中成就組（22%）、中壓高成就組（26%）、低壓中成就組（32%）及低壓低成就組（20%）。相較於中壓高成就組及低壓中成就組的學生，高壓中成就組的學生有較高 的不確定性、神經性、低自尊、外控性，以及較低的外向性，此結果與先前理論相符。同時，研究結果也發現，低壓低成就組的學生亦有較高的低自尊，以及程度中等的不確定性及外控性。研究結果顯示，中學生的考試壓力與其個人特性有關聯性，除了驗證先前理論可能影響壓力的神經性、外向性、自尊及外控性等個人特性之外，也說明學生的不確定性可能是影響考試壓力的其中一項個人特性。本研究將就中學生考試壓力與個人特性的關係進行討論，並提出教育實務上的建議。 In this present study, we explore whether examination stress among 9th graders in Taiwan is related to their personal characteristics, specifically whether students subject to high levels of examination stress have a certain pattern of characteristics. The sample consists of 1,858 9th graders in Taiwan. The Examination Stress Scale (ExamSS) was used as a measure of examination stress. Scores from the Comprehensive Assessment Program (CAP) 2014, the largest standardized achievement test for junior high school students in Taiwan, were used as an index of academic achievement. A questionnaire compiled by the researcher and comprising 26 dichotomous questions was used to measure personal characteristics, including uncertainty, neuroticism, extroversion, low self-esteem, and locus of control. A latent class analysis (LCA) was conducted to categorize students according to the data of ExamSS, CAP 2014, and personal characteristics. The LCA results show that the data best fit a four-classes model, classifying students into high-stress-medium-achievement (22%), medium-stress-high-achievement (26%), low-stress-medium-achievement (32%), and low-stress-low-achievement (20%). The profiles of these four classes show that, by comparison with the medium-stress-high-achievement group and the low-stress-medium-achievement group, the high-stress-medium-achievement group has higher rates of uncertainty and neuroticism, lower extroversion and self-esteem, and greater tendency to externalize the locus of control. In the other hand, the low-stress-low-achievement group is shown to have low self-esteem, and medium uncertainty and external locus of control. In this study, we have found that examination stress is correlated with personal characteristics, such as uncertainty, neuroticism, extroversion, low self-esteem, and external locus of control. According to the results of this present study, some suggestions were proposed, hoping that educational policy can be used to change social atmosphere and provide counselling in schools where it is needed so as to effectively reduce examination stress among adolescents.

In order to satisfy the high-performance and low-power dissipation requirement in wireless communication, this paper proposes a low storage capacity and low-power dissipation Turbo decoder architecture based on the reverse recalculation and linear estimation by changing the storage method of the forward state metric, while the FPGA implementation structure is given. The results show that compared with the existing Turbo code decoder, the decoding structure designed in this paper reduces the storage capacity to 65%, and the decoding performance is close to the Log-MAP algorithm. In particular, compared with the traditional decoder architecture, dynamic storage capacity power dissipation is reduced by about 50%, and the overall power dissipation of the decoder architecture is decreased by 4.97%, 8.78%, 11.93%, 14.18% and 14.65% at the frequency of 25 MHz,50 MHz,75 MHz,100 MHz and 125 MHz, respectively.

BackgroundNuclear reactor structural material activation analysis is an important part of nuclear reactor radiation safety analysis. The traditional cell-based activation analysis method can not describe the non-uniform spatial activation effect inside the structural material cells, resulting in a large deviation between the activation source and the dose results, so it is necessary to carry out the high-resolution activation analysis method for nuclear reactor structural materials.PurposeThis study aims to develop a high-resolution activation analysis method for nuclear reactor structural materials based on mesh activation analysis, and establish an integrated mesh-based activation analysis code (MCFisMA).MethodsFirst of all, based on Rigorous 2-step method (R2S), Monte Carlo particle transport program MCNP and activation calculation program FISPACT, the mesh-based activation method was used to divide the structural material model into fine spatial mesh, and the activation calculation of each mesh was carried out in turn to realize the precise activation calculation analysis of nuclear reactor structural materials. Then, the MCFisMA was implemented by using the neutron transport method, material activation method and activation-induced dose coupled together. In addition, NUREG/CR-6115 PWR model was used to study the application of high-resolution activation analysis of structural materials.Results & ConclusionsThe correctness and reliability of the proposed method and MCFisMA program is verified with the ITER shutdown dose rate (SDR) benchmark. The method presented in this paper has theoretical significance for improving the calculation accuracy of the activation source term and decay gamma dose field of nuclear reactor structural materials. It provides theoretical and data support for reactor shielding design, overhaul and refueling plan and decommissioning strategy.

本研究編製一份教師工作價值觀量表，期望未來幫助師資培育單位檢視師資生的教師工作價值觀，以提供學業成就之外的指標。研究一以30 位資深教師，透過四場焦點團體之內容分析及文獻整理，初步整理出18個向度作為量表編製之依據；研究二分為預試階段及正式施測兩個階段。在預試階段方面，經由200 位大學生之預試結果，最後保留76 題，共10 個向度之正式題本，其向度分別為「專業自我實現」、「專業自我成長」、「思考與挑戰性」、「引導 陪伴學生」、「社會貢獻」、「公平正義」、「人際互動與管理」、「藝術體能活動」、「工作條件與福利」及「社會地位」。在正式施測方面，召募800 位大學生作為參與者，進行信度及效度之檢驗。從折半信度及內部一致性之結果，顯示教師工作價值觀量表具有良好的信度。從驗證性因素分析之結果，本研究提供教師工作價值觀之構念效度證據，並針對教師工作價值觀編製之結果，提出未來實務應用上之建議。 This study developed a work values scale for teachers (WVST) to enable teacher education institutions to inspect the work values of student teachers. In Study 1, we employed focus groups and examined the literature. Through conducting a content analysis of four focus groups comprising 30 experienced teachers and comparing the analysis results with the literature, we assembled 18 dimensions to form the basis of the WVST. In Study 2, we conducted scale evaluation, which was divided into a pilot-test stage and a formal-test stage. In the pilot-test stage, we recruited 200 university students as participants. After conducting an item analysis and an exploratory factor analysis, we retained 76 items and ten dimensions, namely professional self-realization, professional self-growth, reflection and challenges, guiding students, social contribution, equality and justice, interpersonal interaction and management, artistic and physical activities, working conditions and benefits, and social status. In the formal-test stage, we recruited 800 university students to complete the WVST in order to determine scale reliability and validity. The results for split-half reliability and internal consistency reliability revealed that the WVST achieved favorable reliability. The results from confirmatory factor analysis also indicated the construct validity of the WVST. On the basis of these results, we provided suggestions for future practical applications of the WVST in measuring the work values of teachers.

By using the LTCA analysis of involute gear,gear tooth deformation and stiffness curve with load is obtained. Then a study of the effect on meshing stiffness of drum shape modification across of gear width and lead misalignment is carried out by using of slicing method. A convenient method of analyzing and calculating gear deformation curve is proposed,and to be used for obtaining the gear transmission error curve and contact pattern analysis for gear with profile modification and width modification. It is clear that this result is helpful for gear transmission error,the contact state analysis and modification optimization,this method is verified by Romax,an commercial software for gear transmission analyzing.

Straw biochar, as an emerging adsorbent, boasts advantages such as abundant availability, renewability, and cost-effectiveness, making it highly promising in treating heavy metal wastewater. This paper presents a comprehensive review of the preparation methods for straw biochar materials, delves into the adsorption mechanism of straw biochar for heavy metals, discusses its application in heavy metal wastewater treatment, and also highlights areas for further in-depth research, including the adsorption mechanism, adsorption capacity, and regeneration performance, in lights of existing challenges in their preparation and application. This paper deepens the scientific understanding of the action mechanism of straw biochar in heavy metal wastewater treatment, and provides an important reference for the development of straw biochar materials and application of straw biochar materials in the purification of heavy metal wastewater. [ABSTRACT FROM AUTHOR]

Iron (Fe) is an essential trace element for plants, which is involved in photosynthesis and affected many important life activities of Vaccinium spp.. In order to explore the influence of Fe on the important life activities of blueberry (Vaccinium spp.), the blueberry 'Legacy' was used as the material, and 3 Fe environments were set: normal iron (Na-Fe-EDTA), insoluble iron only (Fe2O3) and iron deficiency (without any iron element). The relative chlorophyll content (SPAD value), chlorophyll content and chlorophyll fluorescence parameters of blueberry were analyzed. The results showed that in 2 stress environments of insoluble iron and iron deficiency, the growth indicators, photosynthetic pigment content and SPAD were significantly lower than those under normal iron environment (P< 0.05), while the number, growth amount, ground diameter, leaf area and leaf photosynthetic pigment content of basal branches of blueberry under insoluble iron environment were significantly lower than those in iron-deficient environment (P<0.05). The actual photosynthetic efficiency of leaf PS II under normal iron stress were higher than those under insoluble iron and iron deficiency, while the degree of photoinhibition were significantly lower than those under iron stress and iron deficiency. Leaves of seedlings were damaged and photosynthetic capacity of leaves was weakened in iron-insoluble and iron-deficient environments. The photosystem center conversion efficiency was more unstable in ironinsoluble environments than in iron-deficient environments, and blueberry leaves were the most photoinhibited. Leaf area, biomass per plant and growth of basal shoots were significantly correlated with chlorophyll fluorescence parameters (P<0.01), and photosynthetic pigment content of leaves was significantly positively correlated with SPAD value (P<0.01), but there was no significant correlation between photosynthetic pigment and SPAD and fluorescence parameters (P>0.01). In conclusion, insoluble iron, iron deficiency environment made blueberry growth inhibition and resulted in a decreased leaf chlorophyll content, leaf PS II stress environment reaction center absorption and conversion of light energy was abated, electron transfer and photosynthetic efficiency was lower, which provided reference for deep mining for blueberries in iron nutrient reasonable use way. [ABSTRACT FROM AUTHOR]

Objective To explore the academic experience and thought of Professor Zeng Qingqi, a guidance teacher for inheriting the academic experience of seventh batches of national veteran traditional Chinese medicine experts, on the treatment of erectile dysfunction (ED), and inherit the academic ideas of famous traditional Chinese medicine. Method The effective prescriptions of Professor Zeng Qingqi on ED treatment were collected from Andrology Department of the First Clinical School of Nanjing University of Traditional Chinese Medicine from October 1, 2021 to July 31, 2022, and the used drugs and treatment symptoms were input into the Chinese Medicine Inheritance Assistance Platform V3. 0 for data analysis. Result A total of 252 effective prescriptions on ED treatment were collected. Nature and taste analysis showed that warm drugs were used the most frequently, followed by cold drugs; Sweet drugs had the highest frequency of use, followed by spicy drugs; The analysis of meridian tropism showed that the frequency of drugs targeting the liver meridian was the highest, followed by drugs targeting the kidney meridian; The efficacy analysis showed that the use frequency of tonifying deficiency drugs was the highest, followed by regulating qi drugs; The results of drug frequency analysis, drug use pattern analysis, drug use rule analysis and network topology analysis showed that the commonly used drugs for ED treatment included Bupleuri radix, Paeoniae radix alba, Glycyrrhizae radix et rhizoma, Aurantii fructus, Rehmanniae radix, Corni fructus, Dioscoreae rhizoma, Alismatis rhizoma, Moutan cortex, Poria, Aconiti lateralis radix praeparata, and Cinnamomi ramulus. Cluster analysis obtained three new prescriptions. Conclusion Professor Zeng Qingqi has updated the theory of male Qi Heng Fu and proposed the academic theory of "premature ejaculation, impotence, and irritability depression". He believes that the basic pathogenesis of ED is liver depression and kidney deficiency, and the treatment method is to use both tonifying and tonifying, and the treatment principle is to soothe the liver and tonify the kidney. He is skilled in using the combination of Sini San and Jin Kui Shen Qi pill as the basis for treatment of various types of ED through flexible modification. [ABSTRACT FROM AUTHOR]

Rheological characteristics are fundamental to pipeline system design. Rheological tests were conducted to obtain the yield stress and viscosity index at different mass fractions. Slump tests were conducted to investigate the mobility of tailings slurry. Results show that the yield stress increases with the increase of mass fraction, especially when mass fraction is greater than 70%. After stirring in a high-speed activation stirrer, the yield stress in 70% mass fraction is decreased by 40.9%. When the mass fractions are lower than 74%, high slump values are obtained. Based on the basic parameters obtained in the rheological tests, the key parameters of the pipeline system were calculated, including the critical flow rate and frictional resistance loss. These analyses results could serve as references for pipeline system design.

To solving the problem that it is difficult to build an accurate solid model of meshing helical gears in ANSYS,a new parameterized approach to building an accurate solid model of meshing helical gear based on APDL is presented. The solid model of helical gear pair is built at the reference position based on the equations of the tooth profile curve equation. Taking the meshing position that helical gear pair has the minimum total length of contact lines as the initial meshing position,the rotational phase from the reference position to the initial meshing position of helical gear pair is determined,the initial solid model of meshing helical gears is built by rotating the helical gear pair based on the rotational phase. The equation of phase change in one contact lines distribution change cycle of meshing helical gears is established,then,the every meshing position of meshing helical gears in one contact lines distribution change cycle can be caught by the control of the meshing phase factor in the equation. The results of numerical experiment show that the meshing solid model of helical gear generated by the presented method has a good geometric precision,which can guarantee that the simulation results is credible.

Based on the dynamics of rolling bearing,an improved slice method is used to solve the problem of needle-race contact,and the dynamics differential equations are established and solved by Predicting-Correcting GSTIFF（ Gear Stiff） integer algorithm with variable step. The impact of working parameters and roller crowned shape on the stress distribution of needle-race and bearing life is investigated theoretically,and it shows that,working conditions of bearing and roller crowned shape both have large effect on the fatigue life of bearing. Therefore,the optimum crowned shape of roller should be determined according to the working conditions of bearing.

The Beiya Gold Deposit is a typical karst water-filled deposit. As the hydrogeological conditions and water environment are expected to be changed by future deep mining, the water inrush risk will increase if the roadway is exposed or connected with the karst zone, the underground river and Guochang river. In this study, comparing the field investigation of regional hydrogeology and the geological exploration data with the actual production, we analyze the karst development and water abundance characteristics from the aspects of lithology, structure, landform, etc. The study results show as follows. (1) The karst forms mainly include stone forest, drainage cave, karst depression, solubilization trough, solubilization gap, karst cave and underground river. (2) Lithologically, karst in the second segment of the Middle Triassic Beiya Formation is the most developed, with the purest fine crystalline limestone containing 41.52%--54.77% of CaO. Karst development in the first segment of the Beiya Formation is restricted by limestone and siltstone. Karst is developed in the contact zone on the side of the second segment, while not developed on the side of the first segment. (3) Karst development is mainly controlled by structure, and the direction of karst development is consistent with the NS, EW and NW tectonic lines. Karst is more developed in the fold axis and the warped end, and is relatively developed in the zone affected by fault and the contact zone of rock mass. (4) Karst development shows the characteristics of vertical zonation. Funnels and sink holes are developed at the level of 2,500 m to 3,500 m, grikes and solution grooves at 1,800 m to 2,500 m. Slope valleys, karst caves and underground rivers are developed at the level of 1,694 m, while karst is still relatively developed below the base level of erosion. The lowest control elevation of the cave is 1,479.54 m, and the depth of karst development below the base level of erosion is more than 150 m. (5) The karst water abundance shows its synclinal confluence pattern. The Beiya synclinal water storage structure plays a key role in karst water enrichment. The zone affected by fault and the contact zone between rock mass and its surrounding rock are also conducive to groundwater migration and enrichment. (6) The spatial variation of water abundance in karst aquifer is large. From rock mass as the center to its outward direction, radial water abundance and permeability can be listed in the order of weak-medium-strong or extremely strong. The rock mass and its proximal annular ore-bearing alteration zone shows weak-medium water abundance, while the distal end shows medium-strong water abundance. Some parts of the area are extremely strong in water abundance. (7) The underground river is developed along the axis of the Beiya syncline at the level of 1,740 m to 1,694 m. The Beiya Formation is composed of sandy limestone. The possibility of karst cave or water inrush of the underground river will increase if the mining passes through the fault zone and the syncline core. [ABSTRACT FROM AUTHOR]

為提供師資培育單位在甄選師資培育學生時，更多元的參考依據，本研究建置教師情境判斷測驗，並進行信度及效度之檢驗。研究一自2010 年起，進行教師情境判斷測驗的建置，並蒐集3,133位實習教師及正式教師之施測資料，以試題反應理論（item response theory, IRT）進行分析，檢驗測驗之信度及效度。研究一共建置75 題試題，且試題之中有90.67%與Rasch模式適配。研究二自2014 年起，進行試題的擴充，並蒐集了3,039 位大學生之施測資料。經由試題分析，研究二共建置105 題試題，總題數為180 題。除試題分析外，研究二亦分析修習不同教育學程的學生，檢驗其在測驗分數之差異，提供已知團體差異之效度證據。此外，研究二利用資深教師團隊座談會之質性資料，進行內容分析，探討資深教師在面對教師工作上問題時，其作法判斷背後之意涵，提供更多的建構效度證據。本研究將就教師情境判斷測驗的概念、試題特性，以及編製實務等議題進行討論。 According to the ideal of having multiple measures of teacher education, this study developed the teacher situational judgment test (TSJT) for selecting student teachers. The TSJS was based on the hypothesis that the more similar a student’s thinking is to senior and high-performing teachers, the more likely that student is to become an effective teacher. In Study 1, we collected data from 3,133 intern-teachers and teachers to determine the reliability and validity of the TSJT. On the basis of the analysis of the pilot test and formal test, we retained 75 items. Furthermore, the internal consistency reliability of three of the TSJT booklets was exceeded .7. Additionally, the Rasch model analysis showed that 90.67% of the TSJT items fit the Rasch model. In Study 2, we developed 150 new items to expand the TSJT item bank, and recruited 3,039 college students for an item analysis. Subsequently, we further retained 105 items for the TSJT item bank, totaling 180. The reliability of each booklet was between .47 and .74. For the test validity, the analysis of variances indicated that the TSJT scores of student teachers were significantly higher than those of nonstudent teachers. This provided known-group differences validity for the TSJT. Furthermore, in Study 2, we also conducted a qualitative content analysis to provide additional evidence of the construct validity. This present study discusses the development and practical applications of the TSJT.