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The low-carbon transformation of decommissioned offshore oil and gas platforms is an optimal model for intensive resource utilization and for fully exploiting the economic and ecological benefits of decommissioned platforms. It is also an important measure to maintain and enhance the carbon reduction capacity of the marine sector. However, the green and low-carbon development process in China’s marine sector is just beginning, and the low-carbon transformation of decommissioned offshore oil and gas platforms mostly remains at the conceptual stage, urgently requiring practical and feasible comprehensive transformation plans based on low-carbon technologies. This study completes a survey and analysis of the current status of the disposal of decommissioned oil and gas platforms in China and the level of low-carbon technologies. It proposes a main form of transformation for constructing an offshore carbon recycling hub and three low-carbon transformation routes, clarifying key engineering implementation strategies for platform transformation, including platform safety assessment, selection strategies for transformation plans, and full lifecycle environmental protection. In response to practical issues such as the lack of regulations and policies for platform transformation, shortcomings in the application of low-carbon technologies in the marine sector, and unclear cross-industry cooperation mechanisms, it is recommended to improve platform transformation regulations and guiding policies. It is also necessary to focus on the offshore application performance of core technical equipment, optimize theoretical support for technology, and accelerate the transformation of domestic equipment. Priority should be given to carrying out demonstration projects for the transformation of decommissioned platforms to promote the low-carbon transformation process of decommissioned offshore platforms in China.

To strengthen its energy sector and realize the carbon peaking and carbon neutrality goals, China needs to accelerate the construction of a modern energy system, transform its energy development mode, and improve its energy production support capabilities. The integration and complementarity of multiple energy sources is an effective concept and scheme to solve the separation of energy subsystems, optimize the energy pattern, and improve the efficiency of clean energy utilization. Based on the analysis of the existing modes of multi-energy integration, this study summarizes the development status and bottlenecks of multi-energy integration in China and the development trend of multi-energy integration in other countries. Considering existing models, a new multi-energy integration model that integrates energy conversion, complementarity, reuse, and zero-carbon production is proposed to achieve the clean and efficient utilization of energy. To promote the planning, construction, and practice of multi-energy integration in China, we further propose a basic development path and the following suggestions: (1) formulating a medium- and long-term plan to support multienergy integration based on resource endowment, (2) accelerating the breakthroughs in key core technologies for multi-energy

Abstract Purpose The aim of this study was to describe the longitudinal developmental trajectories and its influencing factors of sexual activity in patients with breast cancer during treatment. Methods A prospective longitudinal study was conducted, including 225 newly diagnosed breast cancer patients in A tumor specialty three-class hospital in Southwest China. We measured sexual activity at the time of admission and diagnosis (T0) and one month (T1), three months (T2), six months (T3), and nine months (T4) after diagnosis. A trajectory analysis model (GBTM) was used to explore the changes in sexual activity in breast cancer patients. Multivariate binary logistic regression analysis was used to analyse the factors that affected the classification of sexual activity trajectories. Results The ratio of sexual activity abruptly declined from 100% at baseline to 39.1% at T1. The percentage of sexual activity was improved, from 51.4% at T2 to 63.1% at T4. The optimal model was a 2-group trajectory of sexual activity in breast cancer patients,36.6% in the “low activity group” and 63.4% in the “high activity group.” The multivariate binary logistic regression analysis revealed statistically significant and positive correlations between sexual activity and age (β = 0.085, OR = 1.089, 95%CI 1.035 ∼ 1.145, P = 0.001),libido(β = 0.774, OR = 2.168, 95%CI 1.337 ∼ 3.515, P = 0.002), vaginal lubrication(β = 1.254, OR = 33.503, 95%CI 2.000 ∼ 6.137, P

Poly(3,4-ethylenedioxythiophene) (PEDOT) is introduced on the surface of a metal–organic framework material by solvothermal method to prepare nanorods (TE@Zn-MOFs) with both flame retardant and thermoelectric properties. Data from cone calorimeter and TG-IR show that TE@Zn-MOFs effectively improves the flame retardant and smoke suppression properties of epoxy-based coatings. At a high TE@Zn-MOFs content of 10 wt%, the coating oxygen index increased from 18.2% to 29.0%, the total smoke release decreased from 25.26 to 22.60 m2, and the V-0 level was achieved in vertical combustion classification. Moreover, PEDOT enables epoxy-based coatings to output a certain current value at different heating temperatures (50–200°C). This work demonstrates that MOFs with flexible and variable structures can serve as effective flame retardants for epoxy-based coatings and endow coatings with fire warning characteristics, providing a way to develop multifunctional coatings for different application scenarios.

Deep-sea mineral resource development is an important measure to address China’s long-term dependence on strategic mineral resources. Having a complete and reliable equipment system is a prerequisite for China to promote its deep-sea mineral resource development and realize self-dependence of national strategic resources. This study focuses on the development history and current status of deep-sea mineral resource exploration and mining equipment in China and abroad and analyzes the bottlenecks that restrict China’s equipment development from three aspects: complete mining system, core mining equipment, and basic equipment and components. It also summarizes the scientific problems that need to be solved urgently and proposes development goals and key research directions from the perspectives of industrial integration, improvement of green mining system, and optimization of technical support. China should prioritize core equipment development to support large-scale mining, promote the integration of multiple industries and high-quality development of the entire equipment chain, and launch major projects for the development of deep-sea mineral resource exploitation equipment, focusing on the deep integration of production, education, research, and application of core equipment technologies. In addition, the government should provide various policy support and focus on innovation and upgrade of domestically produced equipment to promote the commercialized mining of deep-sea minerals in China.