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In order to reduce costs and environmental hazards, this article explores a new synthesis method for preparing NaY zeolite using water quenching residue as the raw material. The effects of the crystallisation time, crystallisation temperature, n(SiO₂)/n(Al₂O₃) ratio and n(Na₂O)/n(Al₂O₃) ratio on the crystallisation of NaY zeolite were investigated, and an ideal synthetic route was obtained. The physical and chemical properties of the prepared NaY zeolite were characterised by XRD, SEM, STEM, FTIR and other methods. In order to understand the adsorption performance of the prepared Y zeolite, different adsorption isotherm models were studied at 30 °C, 60 °C, 90 °C and 0 to 1 bar. At these three temperatures, NaY zeolite has a much higher adsorption capacity for CO₂ than N₂. The Toth equation fits well the CO₂ adsorption of NaY zeolite. The BET test calculates that the micropore specific surface area of NaY zeolite is 838.88m²/g. The range of the zeolite micropores is mainly between 0.35∼0.45nm. The NaY zeolite obtained by the technical route reported in this study has high crystallinity, a uniform particle size, high thermal stability, and excellent CO₂ adsorption performance under flue gas conditions, and will have potential applications in the CO₂ capture in steel plant flue gas prospect

The yield of three disinfection byproduct formation potentials (DBPFPs), including trichloromethane, dichloroacetic acid and trichloroacetic acid formation potential (TCMFP, DCAAFP and TCAAFP), by Microcystis aeruginosa under the nitrate and phosphate inhibition conditions was investigated. The results showed that excessive nitrate could inhibit the growth of M. aeruginosa, but the concentration of DBPFPs in the five fractions of algal metabolites, including hydrophilic extracellular organic matter (EOM), hydrophobic EOM, hydrophilic intracellular organic matter, hydrophobic intracellular organic matter and cell debris, only decreased slightly. Accordingly, the productivity of DBPFPs by M. aeruginosa increased by approximately 40% under the nitrate inhibition condition and the increased productivity of DBPFPs mainly came from EOM. The phosphate inhibition also performed a similar pattern with a lesser extent. The nutrient inhibition did not change the proportion of these three DPBFPs, and TCMFP accounted for approximately 87% of the total DBPFPs. The inhibition could promote M. aeruginosa to secrete more metabolites. However, the cyanobacteria tended to secrete more DBPFPs under the nitrate inhibition condition, which resulted in an increased specific DBPFP, while they tended to secrete more non-DBPFPs under the phosphate inhibition condition, which resulted in a decreased specific DBPFP. HIGHLIGHTS DBPFPs mainly came from a hydrophilic fraction in extracellular organic matter and a hydrophobic fraction in intracellular organic matter.; Nutrient inhibition enhanced the productivity of DBPFP by M. aeruginosa.; Nutrient inhibition promoted M. aeruginosa to secrete more metabolites.; Specific DBPFPs increased with nitrate inhibition and decreased with phosphate inhibition.;

To improve the quality of education in higher vocational colleges and universities, it is necessary to reform and innovate their education management mode, and education can truly promote social development only by promoting the harmonious development of personality. This paper constructs a personalized education management and top talent cultivation model based on the framework of multiple intelligences theory and establishes an evaluation index system to assess its implementation effect. The hierarchical analysis method is used to determine the weights of the indicators, and then the implementation effect of the management and cultivation model is assessed through the multilevel gray comprehensive evaluation method. The evaluation of the implementation effect of the higher vocational colleges and universities found that the average score of the implementation effect evaluation of the four higher vocational colleges and universities is between 3.94 and 4.59 points, which is at a high level, indicating that the implementation effect of personalized education management and top talent cultivation model is better. It is also found that students in higher vocational colleges and universities are more satisfied with the teaching method, management method, curriculum, and cultivation objectives. The model improvement suggestions put forward in this paper from the perspective of students provide valuable references for educational administrators and teachers of higher vocational colleges and universities so that students in higher vocational colleges and universities can achieve the desired effect of cultivating top-notch talents.

In this study, the integration of Building Information Modeling (BIM) and Virtual Reality (VR) technologies with performance analysis software facilitates the selection of optimal indoor space layouts for settlement buildings. This is achieved through the use of information modeling and visualization tools to assess various aspects such as sunlight exposure, lighting conditions, architectural parameters, and energy consumption across different building layouts. A virtual environment was created using BIM and VR, within which the collision detection algorithm was refined using a chime-playing test scenario to enhance the quality control of 3D models. At 5000 triangular slices, the detection algorithm optimized in this study demonstrated a real-time performance that is 19 milliseconds faster than that of the comparative algorithm. Furthermore, in scenarios involving micro-speed air exchange, an open window area of 30 square meters facilitated an air volume of 250,168, indicating both economic and practical benefits. The overall satisfaction with interior design and spatial arrangement achieved through BIM and VR integration consistently exceeds 80%, underscoring the synergistic potential and future-oriented trajectory of combining these technologies.

The development of the transportation industry can effectively accelerate the speed of economic development, in which bridges occupy an important position in transportation. The safety of the bridge design and construction process is a key part of bridge construction, and relying on human resources to investigate safety hazards greatly affects efficiency. In this paper, we combine deep learning technology and the BIM model to explore the synergistic effect of both on the quality management of the bridge construction phase and analyze the measured data. The results show that the application of the BIM model can improve efficiency by 35% compared with the traditional 2D CAD drawings, and the accuracy of data analysis can be improved by 12.51% and 14.26% for DNN and DBN models based on deep learning, respectively. The addition of the GSO algorithm leads to a further 19.19% improvement in the training accuracy of the coupled model. Finally, the optimization model was used to analyze the load factors and force majeure factors that affect the safety of the bridge, and to find the structural factors that affect the safety of the bridge design, which guides to ensure the quality of the bridge during the construction process.

This article examines the syntactic structure of long gei passives in Mandarin Chinese and argues against the prepositional analysis of gei in long passives. Refining the ditransitive verb analysis of Lin and Huang (2015), we propose that gei is an object-control verb which selects a vP complement rather than a CP or IP complement. By providing supporting evidence for the vP analysis through drawing a parallel from object preposing, we show that long gei passives behave on a par with sentences with verbs involving vP complementation like changshi ‘try’, not with those involving IP complementation like jihua ‘plan’. We also show that the ditransitive analysis is supported by syntactic parallels between long gei passives and typical ditransitive sentences in terms of transformation into pseudo-clefts and topicalization of the outer object. The result of this research suggests that two types of object-control structures should be distinguished. One of them involves an IP complement taken by verbs like qiangpo ‘force’, while the other involves a vP complement taken by gei/bei in long passives.

In recent years, sustainable development has been widely discussed. This article primarily explores the reasons behind the necessity for sustainable development. The inevitable environmental degradation resulting from rapid economic development is a crucial factor. Economic development is closely tied to the demand for energy, and sustainable development reduces environmental pollution and alleviates energy shortages. The environmental benefits brought about by sustainable development, in turn, positively impact economic growth. Therefore, sustainable development is indispensable. The strategic approaches to sustainable development in China and the United States differ due to their respective national conditions. This article also delves into the disparities in the sustainable development strategies between China and the U.S. China’s sustainable development leans towards technological advancement, energy conservation, and environmental protection, while the U.S. prioritizes addressing social inequality. Post-COVID-19 pandemic, the sustainable development strategies of China and the U.S. have become increasingly apparent. The article explores what sustainable development strategies China and the U.S. have chosen post-pandemic to swiftly recover their economies. It also analyzes the characteristics of social inequality in China and the U.S., noting that China’s economic inequality is regional, whereas the economic inequality in the U.S. stems from differences in educational attainment. The article further proposes solutions for these economic inequalities. In sustainable development strategies, despite differing national conditions, addressing economic inequality is a crucial component. China requires balancing the allocation of resources across its regions, while the U.S. needs to alleviate wealth disparities resulting from educational differences and address the issue of higher education accessibility.

The rise and fall of the Chinese stock market has been the subject of many studies since its inception. However, the recurring uncertainty of the broad market and individual stocks has overturned many people’s perceptions of the financial market. This paper explores the principles of the rise and fall of individual stocks under certain conditions, starting from Samuelson’s phenomenon of backward bending of the price supply curve for oil and labour, and proposes a methodology for stock market investment based on this principle. The results of the study show that the rise of stock prices is often characterized by a rapid jump. An important factor related to this is the interest rate of private lending. The rise and fall of private lending rates affect the expected return on stock market investment funds and has an important impact on stock market investment. Therefore, in the absence of a qualitative change in the stock’s texture, the medium-term rate of increase is the key to judging the stock price’s later trend. The results of this study provide a new direction to think about when judging the short- and medium-term stock price movements.

BackgroundFibrosis of the myocardium is one of the main pathological changes of adverse cardiac remodeling, which is associated with unsatisfactory outcomes in patients with heart disease. Further investigations into the precise molecular mechanisms of cardiac fibrosis are urgently required to seek alternative therapeutic strategies for individuals suffering from heart failure. SMOC2 has been shown to be essential to exert key pathophysiological roles in various physiological processes in vivo, possibly contributing to the pathogenesis of fibrosis. A study investigating the relationship between SMOC2 and myocardial fibrosis has yet to be conducted.MethodsMice received a continuous ISO injection subcutaneously to induce cardiac fibrosis, and down-regulation of SMOC2 was achieved by adeno-associated virus-9 (AAV9)-mediated shRNA knockdown. Neonatal fibroblasts were separated and cultured in vitro with TGFβ to trigger fibrosis and infected with either sh-SMOC2 or sh-RNA as a control. The role and mechanisms of SMOC2 in myocardial fibrosis were further examined and analyzed.ResultsSMOC2 knockdown partially reversed cardiac functional impairment and cardiac fibrosis in vivo after 21 consecutive days of ISO injection. We further demonstrated that targeting SMOC2 expression effectively slowed down the trans-differentiation and collagen deposition of cardiac fibroblasts stimulated by TGFβ. Mechanistically, targeting SMOC2 expression inhibited the induction of ILK and p38 in vivo and in vitro, and ILK overexpression increased p38 phosphorylation activity and compromised the protective effects of sh-SMOC2-mediated cardiac fibrosis.ConclusionTherapeutic SMOC2 silencing alleviated cardiac fibrosis through inhibition of the ILK/p38 signaling, providing a preventative and control strategy for cardiac remodeling management in clinical practice.

ObjectiveTo investigate the factors of 30-day survival in ECMO patients, establish a nomogram model, and evaluate the predictive value of the model.MethodsA total of 105 patients with extracorporeal membrane oxygenation (ECMO) were admitted to the Department of Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, from January 2018 to March 2021. Cox regression analysis screened out the risk factors. Based on the results of multivariate analysis, the nomogram model was established by using R software, and the discrimination of the model was verified by bootstrap and calibration.ResultsThe results showed that sex, acute physiology and chronic health evaluation (APACHE) II score, disseminated intravascular coagulation (DIC) score before ECMO initiation and average daily dose of norepinephrine were independent risk factors for prognosis. Verify that the nomogram model is verified by bootstrap internally, and the corrected C-index is C-index: 0.886, showing a good degree of discrimination. The calibration curve (calibration) showed that the nomogram model had good agreement. The decision curve analysis(DCA) curve shows good clinical validity above the two extreme curves. Kaplan–Meier curves were drawn for patients in the tertile and compared with the first and second groups. The third group predicted the worst 30-day prognosis for ECMO patients.ConclusionThe nomogram prediction model constructed based on the sex, APACHE II and DIC score, average daily dose of norepinephrine can effectively screen out the factors affecting the prognosis and provide a reference for individualized treatment of ECMO patients.

The band gap of two-dimensional (2D) materials become a hot issue for photoelectric detection. Recently, public attention is thoroughly aroused as to the remarkable electrical transport characteristic and super photoresponse of 2D graphdiyne. The simulation results show that the photoresponse can be adjusted in various solutions based on the graphdiyne nanosheets with different sizes and thicknesses. Based on few-layered graphdiyne nanosheets prepared by a liquid-phase exfoliation method, a photoelectrochemical (PEC)-type few-layered graphdiyne photodetector is demonstrated in this paper. A group of PEC tests are carried out in neutral solution to verify the simulation results. The as-prepared graphdiyne photodetector possesses high photocurrent density, effective responsivity and excellent cycle stability in condition of KCl electrolyte and solar illuminance. The detectivity of the PEC-type graphdiyne photodetector can be easy to adjust by altering electrolyte concentration and other corresponding parameters, which indicates the proposed equipment can be a good candidate for photoelectric detection.

In order to improve the quality of quinoa noodles and inhibit the negative effect of rancid taste caused by oil oxidation on noodles in processing quinoa powder,the defatting treatment of quinoa powder was introduced,and the volatile substances in common noodles,quinoa noodles,defatted quinoa noodles and their soups were analyzed.In experiment,n-hexane was used as the leaching solvent for defatting,while the volatile flavor compounds in quinoa noodles and defatted quinoa noodles were detected by solid-phase microextraction technology and gas chromatography-mass spectrometry (GC/MS).Results show that repeated defatting for three times could effectively reduce the oil content of quinoa.Compared with wheat flour,the aldehydes,furans and ketones in the volatile flavor substances of quinoa noodles were increased.The grass and wine taste of quinoa flour products could be reduced by defatting treatment.The ketones and esters in the volatile flavor substances of defatted quinoa flour products showed significant difference.Defatting treatment can improve the flavor of quinoa,and has little effect on the structure of protein and starch in quinoa flour.Thus,it can be applied as a processing method for quinoa in the future.

In this paper, a transcritical carbon dioxide power generation system based on a vortex tube is studied, which has the advantage of the self-condensation of carbon dioxide. The thermodynamic performance of the system was investigated by establishing a mathematical model. The results showed that under fundamental working conditions, the system could output a net power of 271.72 kW, and the thermal efficiency as well as the exergy efficiency of the system could reach 7.38% and 27.09%, respectively. Exergy analysis showed that the turbine had the greatest exergy loss among the system’s components, followed by the vortex tube, pump, heater and cooler. Parameter analysis showed that increasing the outlet pressure and inlet temperature of the vortex tube can improve the thermal efficiency and exergy efficiency of the system. In addition, the improvement in the turbine component’s efficiency is the most beneficial to the system’s performance, among which the turbine’s efficiency has the greatest impact. Carbon dioxide can be effectively liquified by expanding it in the vortex tube, and its liquefaction ratio increases with the decrease in the vortex tube’s inlet temperature and the increase in the vortex tube’s inlet pressure.

Abstract Background Valid instruments for measuring physical activity at the low end of the physical activity range and producing quantitative results are required among dialysis patients who are extremely inactive. This study aimed to translate and adapt a Chinese version of the low physical activity questionnaire (LoPAQ) and to examine its reliability and validity among hemodialysis patients. Methods This was a cross-sectional study. The LoPAQ was translated into Chinese and culturally adapted following the standardized questionnaire adaptation process. Participants wore an ActiGraph for seven consecutive days and were asked to complete the Chinese version of the LoPAQ (C-LoPAQ) following the ActiGraph monitoring period. The criterion validity of the C-LoPAQ was examined with accelerometers using Spearman’s correlation coefficients. Bland-Altman plots were adopted to determine the absolute agreement between methods. The test-retest reliability was analyzed using the intraclass correlation coefficient (ICC). Results Eighty-five hemodialysis patients had valid accelerometers and C-LoPAQ data. The total walking time reported on LoPAQ was correlated with step counts by ActiGraph (rho = 0.47, p

Buckwheat is rich in protein, vitamins, minerals and many other nutrients, especially has higher content of bioflavonoids, chiral inositol, high activity protein and other hypoglycemic factors than other food crops. The purpose of this experiment is to develop health food with hypoglycemic effect for diabetic population so that yogurt and buckwheat can get a better combination. Bulgarian lactobacillus and Streptococcus thermophilus were mixed at 1∶1 as production strains. Single factor test and orthogonal test were used to optimize the yogurt fermentation conditions. The results showed that the optimum technological conditions of fermented yogurt with Tartary buckwheat milk was 30% of tartary buckwheat pulp, 8% of xylitol and 3% of production strains with a 4 hours’ fermentation. The compounding ratio of stabilizer was 0.15% of CMC, 0.10% of carrageenanand 0.05% of xanthan. At the same time, the hypoglycemic factor including 6.55 μg/mL of chiral inositol was, 0.526 mg/mL of flavonoidsand 0.12 g/mL of buckwheat protein was added in the post-ripening process.

The oxide-carbonate composite electrolyte material with high ionic conductivity at low temperature has been thought that it can be used to develop LT-SOFC. However, the carbonate composite electrolyte is not easy to make it dense, especially mixing and packing oxide and carbonate to fabricate the composite electrolyte simply. In this article, rare-earth-doped CeO2 (RDC) (R = La, Sm, Gd, and Gd + Y) series samples were prepared by wet ball-milling, then sintered into fully dense and porous oxide bulk at 1500–1600 °C and 1000 °C. Melted carbonate LNCO, composed of Li2CO3 and Na2CO3 at a molar ratio of 1:1, was combined with porous oxide bulk materials using a bath method at 500 °C for 10 h to prepare a dense carbonate-oxide composite electrolyte. The dense oxide-carbonate composite electrolyte always obtains by this fabrication process. Boiling water was used to remove carbonate from these composites. Lattice parameters were obtained through Rietveld refinement, and a calculation procedure for quantifying the composite density was proposed. The quantified composite density results were verified through scanning electron microscopy microstructure observations. The Ce valence in the RDC oxides and RDC-carbonate composite was analyzed by X-ray absorption near edge structure spectroscopy to observe the effects of heat treatment temperature and carbonate on the Ce4+/Ce3+ mixed-valence state in doped CeO2.

Energy conservation and environmental protection are crucial to green development. This article distinguishes the relationship between the electricity literacy, energy saving awareness and information feedback. We found that i) electricity literacy and information feedback are negatively correlated with electricity consumption, ii) there is a positive correlation between electricity consumption and living area, household income, permanent resident population and education level, iii) electricity consumption presents an inverted U shape with education level.

To detect multiple targets on a phase-coded Orthogonal Frequency Division Multiplexing (OFDM) radar, this paper proposes a parameter estimation method based on channel separation and maximum likelihood principle. First, the multi-channel signals were separated because of the orthogonality of the OFDM system, and then the separated signals were correlated with the phase-coded reference signal in the fast time domain to acquire a 1-D range profile from each channel. Subsequently, Keystone transform was used to correct the effect of the coupling between Doppler shift of the subcarrier and the slow time domain. Simultaneously, coherent accumulation was conducted jointly in the slow time and subcarrier domains to obtain a 2-D range-Doppler spectrum. Using CLEAN technique, the peaks of this spectrum were examined to obtain the range cells and velocities of each target. Using these parameters as the initial values, the likelihood function was maximized using Newton’s iterative algorithm to yield an approximate maximum likelihood estimator of the motion parameters. Simulation results demonstrate that the proposed algorithm outperforms the traditional Keystone-based estimation algorithm both in computational complexity and parameter estimation accuracy. The algorithm improved the input SNR by approximately 4 dB under the same root mean square error, and the mean square error approached the Cramer-Rao lower bound.

Solution mining of rock salt is one of the important methods to obtain salt, which is a necessity of human life and an important raw material of industry. In solution mining, water-soluble heavy metals within rock salt will migrate to the surface environment with mother solution and remain in subsequent salt products, which may contaminate the surface environment and endanger human health. Thus, it is of great importance to analyze water-soluble heavy metals in rock salt. However, water-soluble heavy metals, such as Cu, Pb, Zn, Cd, have much lower abundances than salt. The high content of salt will affect the atomization efficiency of Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES), making it difficult to directly quantify these metals. In this study, sulfhydryl cotton was employed as the absorbent to separate and enrich Cu, Pb, Zn, Cd in rock salt. Experimental conditions such as pH, concentration and volume of eluent were optimized. The results indicated that good adsorption efficiency was achieved at pH 7, and adsorbed metals could be quantitatively eluted with 7 mL 15%HCl. Meanwhile, Na had no influences on the adsorption or desorption processes. The recoveries of Cu, Pb, Zn and Cd in desorbed solution are above 92.2%, and only 0.04% for Na, realizing the separation of heavy metals from Na and meeting the requirements for the detection of heavy metals by ICP-OES.

Ultra-low-grade magnetite could be used after magnetic separation, resulting in magnetic material being the major product. The content of useful and harmful components in magnetic materials are ideal for the washability evaluation of ultra-low-grade magnetite. However, they have received little attention so far. In this study, electromagnetic separation and Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) were used to determine the contents of useful and harmful compositions (TFe, V2O5, TiO2, P, Cu, Pb, Zn) in raw ore and magnetic material. When the component (V2O5, Cu, Pb, Zn) contents were far lower than the required contents of criterion, the contents of these elements after magnetic separation varied but did not affect the smelt and evaluation results. However, the contents of TFe, TiO2, and P changed obviously after magnetic separation. The TFe content increased from 14.23%-16.60% to 53.95%-69.86%, whereas the TiO2 content decreased from 4.43%-5.02% to 0.84%-1.83%. The P content decreased from 0.11%-0.30% to 0.027%-0.048%, which affected the smelt and evaluation results (in Table 2). The concentrations of TFe, TiO2, and P can be used to reflect the smelt selection of ultra-low-grade magnetite. The concentrate is easily obtained by low intensity magnetic separation and the content of TFe, P, Cu, Pb, Zn meets requirements. Attention should be paid to the evaluation of TiO2 in tailings since most TiO2 is concentrated in the tailings. In conclusion, this is a feasible method to evaluate the washability and define the objective elements of utilization by using electromagnetic separation and ICP-OES. This method can not only evaluate the smelt possibility of ultra-low-grade magnetite but can also determine the elements to be used, making it meaningful to the comprehensive utilization of ultra-low-grade magnetite.

Inspired by the ultraviolet induced properties of biological materials, we developed fluorescent wood as a new type of functional material which can be applied to anti-counterfeit label technology and wood-emitting artwork. This study discusses the influence of temperature, time, ligand ratio, and reactant concentration on the structure and properties of fluorescent wood with europium(III) ternary complexes. The surface morphology and fluorescent properties of the modified wood were characterized by scanning electron microscopy (SEM) and fluorescence spectrometry. The results showed that a high reaction temperature of 75 ºC was beneficial in obtaining stronger fluorescent wood; a reaction time of 8 h exerted a significant influence on fluorescent wood when the reactant concentration of the sample was 0.03 mol/L. In addition, the results of infrared spectroscopy, X-ray photoelectron spectroscopy, and energy-dispersive X-ray analysis showed that modification of wood takes place through the Si-OH groups of the silane coupling agent, which link to the surface of wood. After 120 hours of UV light irradiation, the surface fluorescence intensity of the modified wood can reach 500 arb. units. It can be considered that the modified wood has better anti-ultraviolet aging properties, thereby prolonging the life of poplar.

The COVID-19 spread gradually throughout the country in the Spring Festival around 2020, leading to economic downturn and more severe employment situation in colleges. Multiple difficulties and challenges, such as the reduction of employment posts, the delay of graduation progress, the change of recruitment forms and the psychological anxiety of college students, lead to the huge employment pressure for college graduates. We can cultivate the comprehensive ability of students by means of informatization management, such as broadening employment channels, ensuring graduation on time, improving employment policies and rebuilding psychology of college students. In this way, the high quality of employment work in Colleges can be ensured. Scientific measures should be taken to deal with the impact of the epidemic on employment.