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Objective To evaluate the efficacy and safety of high intensity focused ultrasound (HFIU) combined with endometrial ablation in the treatment of adenomyosis (AM) patients with heavy menstrual bleeding (HMB). Method A total of 199 patients with AM combined with HMB who underwent HIFU treatment at the Obstetrics and Gynecology Center of Affiliated Hospital of Chengdu University of TCM from July 2020 to September 2022 were selected and divided into two groups according to the ablation range. The combined ablation group included 80 cases with lesion and endometrial ablation (endometrial ablation rate ≥ 30%), while the lesion ablation group 119 cases with simple lesion ablation. A 1:1 propensity score matching was performed on the two groups, resulting in 59 patients in each group. A 6-month follow-up was conducted. The clinical manifestations (menstrual volume, degree of dysmenorrhea, uterine and lesion volume), quality of life (MS-QOL, UFS-QOL), and postoperative adverse reactions between the two groups before and 6 months after surgery was compared. Results Menstrual volume, degree of dysmenorrhea, uterine and lesion volume, MS-QOL score, and UFS-QOL score of the both groups were improved 6 months after surgery, when compared to those before surgery (P < 0.05). Significantly reduced menstrual volume, degree of dysmenorrhea, and lower MS-QOL score were observed in the combined ablation group when compared with the lesion ablation group (P < 0.05), but there was no statistical significance in uterine and lesion volume and UFS-QOL score (P > 0.05). There was no difference in the incidence of adverse reactions between the two groups (P > 0.05), but the combined ablation group had longer vaginal bleeding and fluid flow time (P < 0.05). Conclusion The combined HIFU and endometrial ablation can effectively reduce menstrual flow, alleviate dysmenorrhea, and improve quality of life in patients with AM combined with HMB. Although it increases vaginal bleeding and fluid flow time, reasonable symptomatic management can effectively prevent the occurrence of adverse consequences such as infection. [ABSTRACT FROM AUTHOR]

Review the five main components of geopolymer raw materials and five curing methods. A review is provided on the five main components of geopolymer raw materials, which are activators, silico-aluminum precursor, modified materials, additives, and water, as well as five curing methods: thermal curing, electrocuring, vapor pressure curing, microwave curing, and solar radiation curing. Discuss the excitation principles of alkali, acid, and salt activators, compare the sources, main excitation products, and their microstructures of low-calcium and calcium-free aluminosilicate precursors. Describe the impact of modified materials on the performance enhancement of geopolymers, elaborate the effects of three commonly used admixtures on the rheological properties and mechanical strength of geopolymers, analyze the role, forms, and quantity of water in geopolymer reactions, and finally, summarize the curing principles and influencing factors of curing methods. [ABSTRACT FROM AUTHOR]

MWCNTs/SiC nanocomposites were prepared by click reaction using resistive microwave absorbent MWCNTs as the matrix material and dielectric microwave absorbent SiC as the loss medium. XRT), XPS, TG, SEM and vector network analyzer were used to characterize the structure and test the microwave absorption performance of the composite. In addition, the influence of different feeding ratio on the microwave absorption properties of the composites was also discussed. The experimental results show that the MWCNTs/SiC binary nanocomposites were successfully prepared by clicking method. When the ratio of MWCNTs to SiC is 1:1, the minimum reflection loss (RLmin) of the MWCNTs/SiC binary nanocomposite at the thickness of 2.0 mm reaches - 44.96 dB, and the minimum effective absorption bandwidth (RLmin < -10 dB) up to 5.04 GHz (from 12.66-17.93 GHz, covering 87.8% of the Ku band). MWCNTs/SiC binary nanocomposites can effectively absorb electromagnetic waves in the whole X-band, and the thickness range is 2.0~2.5 mm. Moreover, by adjusting the thickness of the absorption layer, almost all the electromagnetic wave of C, X and Ku bands can be effectively covered. Therefore, the composite materials with covalent bond between MWCNTs and SiC prepared by click reaction is a new method to be used as efficient microwave absorbing materials. [ABSTRACT FROM AUTHOR]

Geopolymer materials have excellent properties such as high strength, high toughness, corrosion resistance, fire resistance and sealing of heavy metals. It has always been a research hotspot in the field of civil engineering, but the research on geopolymer materials is still lack of systematicness. According to the research results of geopolymer materials by scholars at home and abroad in recent years, aiming at the unique performance characteristics and the excellent chemical stability of geopolymer, the freeze-thaw cycle and calcination test of geopolymer were analyzed and summarized from the macroscopic and microscopic perspectives, and the difference in corrosion resistance between geopolymer and ordinary Portland cement was compared. The toughening modification methods and research results of geopolymer materials were reviewed. The application of geopolymer materials in construction industry is summarized, and the application prospect of geopolymer materials in construction industry is briefly analyzed. [ABSTRACT FROM AUTHOR]