Preparation Method of Iron Oxyhydroxide Nanosheets for Treating Organic Dyes

Considering the promoted purification requirement for industry sewage, the discharge of azo dye wastewater will have a serious impact on the environment, iron oxyhydroxide nanosheets were designed and prepared, and the purification effects and application conditions were investigated in this work. We have used its structural advantages to perform adsorption tests on Congo red (CR). It found that it has very excellent properties. It has strong adsorption capacity for Congo red under the condition of low dosage and no adjustment of PH. By employing iron oxyhydroxide nanosheets with optimized molar ratio of reducing agent to Fe, it was found that the adsorption efficiency increase in the removal percentage for CR from industry sewage could be achieved at the large specific surface area and pore volume of B-Fe Nanosheets.

Platelet-rich plasma injection for tennis elbow: did it ever work?

Platelet-rich plasma (PRP) is a commonly used treatment for tendinopathies such as tennis elbow despite the questionable evidence of its efficacy. A recent Cochrane review suggests that it likely does not provide clinically meaningful benefits in people with tennis elbow. In this viewpoint, we discuss how lack of regulation allowed aggressive marketing and clinical use without normal phases of drug development and approval process or rigorous evidence of benefits. Since several phases of development were bypassed, we still do not know the optimal preparation method and dosing of PRP for tendinopathies. Furthermore, several clinical trials compared PRP with other interventions although it was unclear if PRP was better than placebo and these comparisons created distraction rather than improved understanding of its effects.

Identification of diverticular bleeding needs early colonoscopy rather than preparation

Background and study aims When patients present with acute colonic diverticulum bleeding (CDB), a colonoscopy is performed to identify stigmata of recent hemorrhage (SRH), but valuable time can be lost in bowel preparation. This study retrospectively examined groups of patients who either had a standard pre-colonoscopy regimen or no preparation. Patients and methods This study compared data from 433 patients who either followed a lengthy regimen of bowel preparation (prepared group, 266 patients) or had no preparation (unprepared group, 60 patients). We compared the association between time (hours) between admission before starting a colonoscopy (TMS) and identification of SRH using a chi-square test. Results In 48 of 60 cases (80.0 %) in the unprepared group, a total colonoscopy was performed and the time to identify SRH was decreased. The respective rates of SRH identification in the unprepared and prepared groups were 55.2 % (16/29) vs. 46.7 % (7/15) if the TMS was < 3 hours; 47.1 % (8/7) vs. 36.8 % (35/95) in 3 to 12 hours; 0 % (0/3) vs. 22.0% (13/59) in 12 to 18 hours; and 21.8 % (3/11) vs. 20.6% (42/204) in > 18 hours. There were no significant differences between the two groups. However, the SRH identification rates before and after 12 hours were 42.3 % (66/156) and 20.9 % (58/277) (P < 0.001). Conclusions Our data suggest that the bowel preparation method before colonoscopy is an independent variable predicting success in identifying SRH among patients with CDB. Decreasing the time before colonoscopy to no more than 12 hours after admission played an important role in identifying SRH.

Preparation of Prussian Blue Analogue Ce[Co(CN)6]·nH2O Nanoparticles

Prussian blue analogue Ce[Co(CN)6]·nH2O nanoparticles were prepared by water bath coprecipitation for the first time. The effects of reaction parameters on the morphology and particle size of the synthesized products were revealed by controlling the variable method. The synthetic product has the characteristics of simple preparation method, low cost, small particle size and MOF (Metal organic framework). The cerium and cobalt elements contained in it are common catalytic active elements, which provides ideas and reference for the design and preparation of high-efficiency and low-cost catalysts.