Background: The combination of Traditional Chinese medicine and Western medicine (TCM+WM) has been widely used in the treatment of glomerulosclerosis, but the results are still controversial. This study will assess the clinical efficacy of TCM+WM for glomerulosclerosis and provide evidence-based medical data via meta-analysis. Method: The MEDLINE, EMBASE, PubMed, Cochrane Central Registry of Controlled Trials, and multiple Chinese databases (Wan Fang, CNKI, and VIP) were searched for randomized controlled trials (RCT) that compared the effects of WM and TCM+WM. Review Manager 5.3 software was used for the meta-analysis of selected studies, and appropriate tests were performed to determine the quality, heterogeneity and sensitivity of these studies. Results: Sixteen RCTs met the inclusion criteria and were selected for the analysis. Compared with the placebo or WM-treated glomerulosclerosis patients, TCM+WM intervention significantly improved renal function indices including 24-hour urine protein quantity (24 h U-Pro), serum creatinine (Scr), blood urea nitrogen (BUN), creatinine clearance (Ccr). In addition, the serum albumin (ALB), triglyceride (TG), and cholesterol (CHOL) levels were also significantly improved (P < .05) in patients receiving the combination therapy. Finally, the combination of TCM+WM reduced the indices of glomerulosclerosis more effectively compared with WM alone. Conclusion: The combination of TCM+WM can significantly improve the renal function and prognosis of patients with glomerulosclerosis.
The preparation of high-density tailings is a prerequisite for cemented paste backfill technology, and the flocculated fine tailings of sealed water leads to challenges in the slurry thickening of tailings. Shearing conditions can compact the micro floc structure to improve the underflow concentration. The nm-μm scales of pore characteristics and connectivity are essential for the dewatering process. The computed tomography (CT) results show that the underflow concentration increases from 62.3 wt% to 68.6 wt% after undergoing rake shearing at 2 rpm, and the porosity decreases from 42.7% to 35.54%. The shearing conditions reduces the spheres and sticks by 43.14% and 43.3%, respectively, from the pore network model (PNM). The seepage flow states were affected by the changes in the pore structure. The maximum surface velocity and the maximum internal pressure decrease after undergoing shearing. Shearing conditions can break the micro floc structures, and the fine particles can fill in the micron-scale pores by gravity and shearing conditions, resulting in the forced drainage of water into the pores. Shearing conditions can break the thickening floc network structures; natural fine particles can fill the micron-scale pores by gravity and shearing conditions. The upward seepage of sealed water along the μm-scale pore channel causes a higher bed concentration. However, the sealed water in the nm-scale pores cannot flow upward due to water cohesion and particle adhesion resistance.
Permeable reactive barrier (PRB) remediation technology has been widely used in the remediation of groundwater contamination. In numerical simulations, neglecting the non-uniform distribution of heavy metal contamination along the depth may lead to deviations between simulation results and reality. The distribution of heavy metals in the soil layer around a non-ferrous mining area in Hezhou, Guangxi, southern China was investigated, and it was found that the standard Gaussian function could well describe the non-uniform distribution of heavy metals in the soil layer. A two-dimensional analytical model solved by the finite element method was used to simulate the migration process of heavy metal contamination in the aquifer and PRB. The results show that the uniform distribution of contaminants along the depth ignores the dilution effect, which may underestimate the service life of the PRB and lead to an overly conservative design of the PRB. The breakthrough time of the PRB decreases with the increase of the maximum initial concentration (Cin,max) and the high concentration range (σ), and increases almost linearly with the barrier thickness (Lw). An optimal design method for PRB location and thickness is proposed, which can provide a reference for the engineering application of PRB.
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