Free radical polymerization of acryloyl chloride (AC) was conducted in the following solvents: dichloroethane, ethyl acetate, tetrahydrofuran, dichloromethane, dioxane, and cyclohexane. However, poly(acryloyl chloride) with high molecular weights could be obtained only in solvent cyclohexane. The molecular weights of poly-(acryloyl chloride) could be measured through analogous poly(methyl acrylate). The reactivity ratios of AC ( M 1 ) with styrene (St) or vinyl acetate (VA) obtained by the extended Kelen-Tü dös method at 42ЊC with dicyclohexylperoxydicarbonate as initiator in dioxane were found to be AC-St (r 1 Å 0.09 { 0.1, r 2 Å 0.40 { 0.1) and AC-VA (r 1 Å 0.84 { 0.1, r 2 Å 0.03 { 0.1), respectively. The Q and e values of AC calculated from obtained r 1 and r 2 were 0.58 and 1.02.

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The present study aimed to review the research literature on aquatic exercise for health promotion using bibliometric methods and CiteSpace software. The number of studies related to this topic are constantly expanding, with the USA, Brazil, and Australia the centers of this research. Most published papers fall within Sports Science, but the disciplines of Physiology, Psychology, and Rehabilitation were also found to be dominant domains for this literature. The seven most prolific authors were from Brazil or Spain. The most frequently cited references focused on sub-topics of physiology, biochemistry, physical fitness, psychological health, cardiovascular disease, and joint disease. New research trends have shifted to the promotion of cardiovascular health in clinical populations (stroke, overweight, hypertension, endothelium dysfunctional, obese, inflammation, antioxidant, heart failure). Overall, this review found that research hot spots and trends in this realm have focused on improving cardiovascular health with aquatic exercise.

This paper estimates lake level variations over two small and adjacent lakes in the Tibetan plateau (TP), namely Gemang Co and Zhangnai Co, as well as the inland Dianchi Lake in China using CryoSat-2 SARIn-mode and LRM 20-Hz waveforms over the period of 2011–2018. Different retrackers and a dedicated data editing procedure have been used to process CryoSat-2 data for determining the lake level time series. The lake level estimations are indirectly validated against those from Jason-2 in TP and from in situ data in Dianchi Lake, both showing good agreement with strong correlation coefficients >0.74. The results of this paper suggest that the official ICE retracker for LRM data and APD-PPT retracker for SARIn-mode waveforms are the most appropriate retrackers over Dianchi Lake and TP lakes, respectively. The trend estimates of the time series derived by both retrackers are 61.0 ± 10.8 mm/yr for Gemang Co and Zhangnai Co in TP, and 30.9 ± 64.9 mm/yr for Dianchi Lake, indicating that the lake levels over three lakes were continuously rising over the study period. The results of this study show that CryoSat-2 SARIn-mode data can be used for monitoring many small lakes that have not been measured by other altimetry missions in TP.