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At present, the second-class oil layer has become the main polymer flooding replacement layer in the Lamadian Oilfield. The second-class oil layer has low permeability, low connectivity and serious heterogeneity. The results of the polymer flooding laboratory experiments are quite different from the field flooding effect. Polysystem design provides better guidance. Based on theoretical and field data analysis, this paper adopts constant pressure injection method. After the experimental injection fluid is seepage through a 1.5m long core, the core flooding experiment is carried out, that is, the problem of excessive pressure rise in polymer flooding is controlled, so that the injection fluid is closer to the oil layer. state of the injected system. The constant pressure polymer flooding experiment was used to establish the matching relationship between the polymer system and oil layers with different permeability, which effectively guided the design of the on-site polymer injection system. At present, indoor polymer flooding core experiments generally adopt the constant speed mode, without controlling the injection pressure. However, due to the influence of permeability, connectivity and other factors, the injection pressure increases greatly, and the reservoir water absorption is difficult, which leads to a great difference between the experimental results and the field effect. In order to make the indoor core experiment closer to the actual field injection state and better guide the design of polymer flooding scheme, it is urgent to optimize and improve the experimental method.

In the past few years, internet celebrities have become a new and important way to get people to buy energy-saving products. Their psychological mechanisms for promoting fans' intention to purchase have become the focus of academic attention, but a unified conclusion has yet to be reached. This study uses online communities as a scenario, with the characteristics of influencers' expertise, social attraction, and task attraction as antecedent variables and social cognitive theory and parasocial interaction theory as the theoretical basis to explore their influence on fans' intention to purchase household energy-saving products. The study investigates the mediating role of parasocial relationships and the moderating role of fans' green self-efficacy in influencing internet celebrities' expertise and attraction of fans' parasocial relationships. The results showed that the parasocial relationships formed between fans and influencers mediated the relationship between the expertise and attraction of influencers and fans' intention to purchase energy-saving products and that "green self-efficacy" positively moderated the parasocial relationships formed between fans and internet celebrities in terms of their expertise and task attraction. The moderating effect of "green self-efficacy" on the parasocial relationships between fans and internet celebrities was insignificant. [ABSTRACT FROM AUTHOR]

Both the realization of the "double carbon" goal and the low-carbon economy development requires a focus on transportation CO2 emissions. Calculating Chinese transportation CO2 emissions and exploring its principles are essential for achieving high-quality development of the transportation industry. Firstly, we use a "top-down" method to assess carbon emissions from transportation operations from 2003 to 2019. Secondly, the study decomposes the influencing factors of transportation CO2 emissions in China using the log-average weight decomposition method. Thirdly, the Tapio decoupling model is applied to study the decoupling effect of transportation CO2 emissions in each province of China. The findings suggest that China's transport carbon emissions are growing at an annual rate of roughly 16%. All GDP per capita, transportation energy intensity, and population size increase the growth of transportation CO2 emissions. Contrastly, energy use per unit of turnover and transportation intensity decrease the growth of transportation CO2 emissions. There is much variation in China's carbon emission decoupling index from year to year. Policy recommendations are proposed in response to the study of the above findings and the differences in carbon reduction potential among provinces. [ABSTRACT FROM AUTHOR]

Summary: Although the high‐capacity Si/graphite anode serves to advance the energy density of lithium‐ion batteries, the volume change remains the main disfigurement of Si/graphite anode. Many studies show that crosslinked structure binders tend to play a good inhibitory effect on volume expansion. In this work, a three‐dimensionally covalently cross‐linked and flexible polyimides (C–PI–OH) is successfully synthesized and applied as silicon/graphite anode, which is composed through a tri‐monomer co‐polycondensation and crosslinking process. The as‐formed free carboxylic acid groups and amide groups in C–PI–OH are efficient in structural stability, so the electrode bound by C–PI–OH exhibits the highest peeling strength than C–PI and polyvinylidene fluoride. The flexible network of the C–PI–OH binder is competent for accommodating the volume expansion and contraction of silicon particles during the deintercalation of lithium ion, which helps in the wholeness of solid electrolyte interface film and electrodes, and effectively boosting the cycle stability of the Si/graphite anode. [ABSTRACT FROM AUTHOR]

The quality of economic development is not sufficient, despite the apparent role that public environmental monitoring and management play in the economy's rapid expansion. Therefore, enhancing the standard of economic growth is of the utmost importance. It is vital to establish innovative management techniques to support social and governmental transformation in order to raise the standard of economic development. Economic development affects public administration's fundamental duties and goals. The division of public administration distributes social resources and enhances the market's function. The fundamental problem in public economic management is how to successfully actualize rational resource allocation, advance social justice, and boost social welfare on the basis of resource scarcity and the breakdown of the market mechanism. This study greatly increases the global optimization performance of the fundamental ant colony method and provides the explicit programme and simulation stages for the new algorithm. Finally, simulation tests are conducted using the basic ant colony algorithm and the upgraded ant colony algorithm in relation to the decision-making model of public economic management. According to the simulation findings, the revised algorithm successfully addresses the traditional approach's drawbacks, including its slow convergence speed and propensity to easily enter local minima, and its optimization performance has increased by 30.23%. [ABSTRACT FROM AUTHOR]

The use of inexpensive graphite oxide (GO) as a carbon source, instead of the expensive reduced graphene oxide (rGO), is essential to prepare metal oxide/rGO composites. In this work, we investigated the in situ reaction of GO and FeCl3 to produce Fe2O3/rGO composites as anode materials for high‐energy lithium‐ion batteries (LIBs). In this reaction, iron ions combined with the oxygen‐containing functional groups of GO, which subsequently grew into Fe2O3 nanoparticles, whereas the GO transformed into rGO under hydrothermal conditions. In the composite Fe2O3−rGOx samples, intergranular gaps in the Fe2O3 sub‐micron particles evidently increased the contact between the Fe2O3 active material and the electrolyte, which improved the Li‐ion conductivity and electrochemical performance of the Fe2O3−rGOx composites. The Fe2O3−rGO2 sample showed the best cyclic performance and delivered the highest capacity of all samples. The initial discharge and charge capacities of Fe2O3−rGO2 were 1086.3 and 722.4 mAh g−1, respectively. After 100 cycles, the discharge specific capacity of Fe2O3−rGO2 was 653.2 mAh g−1 and the coulombic efficiency was 98.4 %. We found that an appropriate weight ratio and composite morphology of Fe2O3−rGOx were important in influencing the electrochemical properties of the composite anode materials for high‐energy LIBs. [ABSTRACT FROM AUTHOR]

Summary: The heterostructural construction of metal disulfide/oxide is essential in the electrochemical performance as anode material for lithium‐ and sodium‐ion batteries (LIBs and SIBs). In this work, an integrated composite of molybdenum disulfide (MoS2) and hexagonal molybdenum dioxide (MoO2) together enwrapped in reduced graphene oxide (rGO) is synthesized under hydrothermal condition. In the pelletizing MoS2‐MoO2/rGO composite, rGO as substrate effectively prevents the restacking and pulverization of MoS2‐MoO2 during a long cycling process. Meanwhile, the synergistic effect among the MoS2, MoO2, and rGO components are responsible for abundant active sites and shorten ionic transport channels. When evaluating as anode material for LIB, MoS2‐MoO2/rGO sample presents excellent cyclic performance and still delivers a high capacity of 1062.3 mA h g−1 after 120 cycles at 0.2 A g−1; evaluating in a SIB at 0.04 A g−1, it presents excellent cyclic performance and delivers 430 mA h g−1 at the 80th cycle. The heterostructural composite MoS2‐MoO2/rGO is one of the candidate anode materials for high‐performance LIB and SIB. [ABSTRACT FROM AUTHOR]

Gonadotropin-releasing hormone (GnRH) has been demonstrated to exert anti-proliferative functions on various tumor cells in endometrial, ovarian, bladder, or prostate cancer as a part of the autocrine system. In addition, the expression levels of GnRH and its receptor had been identified in breast cancer or non-reproductive cancers, such as glioblastoma and pancreatic cancer. Previous studies have reported abnormal GnRH expression in several malignant tumors, suggesting that GnRH and its receptor might be essential for tumourigenesis. In the present study, we attempted to clarify the mechanisms underlying GnRH function in cell proliferation in pancreatic cancer. Our results indicated that GnRH expression might be essential for the malignancy of pancreatic cancer. We then found that GnRH overexpression can induce cell apoptosis through activating the Bcl-2/Bax pathway and autophagy might be involved in the GnRH-mediated apoptosis in Panc1 cells. Further investigation showed that the inhibition of GnRH may promote tumor invasion and migration through upregulation of MMP2 expression in pancreatic cancer cells. Moreover, our results indicated that GnRH can regulate the Akt/ERK1/2 pathways to promote cell proliferation by inhibiting cell apoptosis in Panc1 cells. Therefore, our finding exhibited that the regulation of GnRH expression may be essential for tumourigenesis in pancreatic cancer, and might be a potential target for the treatment of the patients with pancreatic cancer. [ABSTRACT FROM AUTHOR]

3D nanohybrid structures with few-layered MoS2 nanosheets uniformly incorporated in the carbon substrate are prepared via using the rapid and homogeneous microwave-hydrothermal method, in which the size of the basic unit structure of MoS2/C was small. The samples were systematically investigated by X-ray diffraction, field emission scanning electron microscopy, X-Ray photoelectron spectroscopy and high-resolution transmission electron microscopy for structure and composition test. The electrochemical performances of the composites are evaluated by cyclic voltammogram, galvanostatic charge-discharge and electrochemical impedance spectroscopy. Electrochemical measurements reveal that the maximum-specific capacitance of the MoS2/C electrodes reaches up to 1003 mAh g-1 at a discharge current density 100 mA g-1. The MoS2/C hybrid composite remains 755 mAh g-1 after 50 cycles at the current of 200 mA g-1, much higher than that of the pure MoS2. The superior electrochemical performances of MoS2/C composites as Li-ion battery anodes are attributed to their enhanced available active sites for charges, decreased transmission resistance between interlayers, improved electronic conductivity as well as good mechanical stability. [ABSTRACT FROM AUTHOR]