Improvement in detection accuracy is an important and hot topic for laser induced breakdown spectroscopy (LIBS). Discharged-pulse assisted (DPA) plasma has been investigated as an effective way to enhance analytical capabilities and accuracy of LIBS. Most of reported DPA experiments have been performed using high voltage and power to comprehend spectrum enhancement. For safety concerns and maneuverability of LIBS equipment; low power and small current discharge are viable for industrial application. In this paper, the enhanced spectra with many extra peaks and higher line intensities were also detected, realized by a low-power discharge assisted LIBS (Max. 2.8 kV and ~1 mA), which are much lower than reported in literature ~MW discharge. The number of atomic peaks of the sample increases, on the other hand, and gradual peaks become stronger with the increase of discharged HV from 1 kV to 1.5 kV, 1.75 kV, 2 kV, 2.5 kV and 2.8 kV. The discharge current increases from 0.2 mA to 1.5 mA, which is almost threshold discharge voltage. After processing, the original spectra, including the peak shift and peak correction by statistics and physics, resulted in achievement of better line stability in terms of relative standard deviation (RSD) of ash, carbon, and volatile coal samples with root mean square error prediction (RMSEP) of 0.4864, 0.3682, 0.3374 and the linear regression coefficient R2 = 0.99, 0.99,0.98, respectively. The result proposes a promising method to improve detection accuracy of LIBS with simple setup, high safety and low-cost.
Calcaneal fractures (CFs) are the most common kind of tarsal fracture. The choice of surgical approach is a key element in the management of CFs, but the best method remains in dispute. Also, no single approach is appropriate for all kinds of CFs.The study intended to evaluate the relationship between six surgical approaches for clinical treatment of CFs and prevention of postoperative complications, to provide an evidence-based approach for treatment.The research team performed a meta-analysis using the data from a previously published review and updating that data through a new narrative review. The team performed a systematic search in PubMed, Embase, the Cochrane Library, and the Chinese National Knowledge Internet (CNKI) from inception until January 2022, with no language restrictions. The search used the following keywords for the search: calcaneus, heel bone, surgical wounds, surgical incisions, prospective trials, prospective trials, and randomized controlled trials.The research team compared the complication rates, American Orthopedic Foot and Ankle Society (AOFAS) scores, and Bohler's angles for the six surgical approaches, which were: (1) the extensive lateral approach (ELA), (2) the sinus tarsi approach (STA), (3) the horizontal arc approach (HAA), (4) the longitudinal approach (LA), (5) the oblique lateral incision (OLI), and (6) the modified incision (MI)). The team summarized the results using a random effects model.The research team analyzed the data from 19 RCTs with 1521 participants. They all were randomized controlled trials (RCTs). The complication rates were available for 18 studies, which included 1474 participants. The rates were significantly lower: (1) for HAA compared to ELA, [OR=-2.03; 95% CrI: [-3.63, -0.43)]; (2) for LA compared to ELA (OR=-1.83; 95% CrI: [-2.83, -0.84]); and (3) for STA compared to ELA (OR=- 1.22; 95% CrI: [-1.67, -0.78]). Of the 19 studies, 11 RCTs, with 942 participants, used the AOFAS scale. The probabilities for the surface under the cumulative ranking curve (SUCRA) indicated that OLI (0.694 ) >LA (0.596) >HAA (0.51) >STA (0.477) >ELA (0.224). In addition, ELA had the worst SUCRA (0.224). Of the 19 studies, 15 RCTs, with 1376 participants, used the Bohler angle as an outcome measure. The probability of SUCRA for the surgical approaches indicated that LA (0.723) >ELA (0.667) >STA (0.468) >HAA (0.373) >MI (0.27).The meta-analysis provides an evidence-based approach to the clinical treatment of CFs for six surgical approaches. HAA had the best outcomes, and ELA had the worst.
Abstract Background: Vascular dementia (VD) is a commonly-seen disease in the elderly. What is more, “Acupuncture at 3-points for intelligence” is one of the most important components of “Jin's three-needle therapy” created by Rui Jin, a professor of Guangzhou University of Chinese Medicine, which can be used in the VD patients. In this article, researchers will assess the clinical efficacy and safety of acupuncture at 3-points for intelligence in the treatment of VD. Methods: A systematic literature search for articles up to September 2018 will be conducted using 9 databases: PubMed, Cochrane Library, Embase, CNKI, CBM, VIP, Wanfang database, OASIS, and CiNii. Inclusion criteria are randomized controlled trials (RCTs) of acupuncture at 3-points for intelligence on treating VD. The primary outcome measures will be scores reflecting the neurological function of participants based on common medical scales. Hemorheology indexes, homocysteine (Hcy), acetylcholine (Ach), nitric oxide (NO), and adverse events will also be assessed. Stata V.13.0 software will be used for data synthesis, sensitivity analysis, meta-regression, subgroup analysis, and risk of bias assessment. A funnel plot will be developed to evaluate reporting bias. Egger and Begg tests will be further performed to conduct quantitative evaluation of publication bias and to evaluate the symmetry of funnel plot. We will use the Grading of Recommendations Assessment, Development, and Evaluation system to assess the quality of evidence. Results: The results of this systematic review and meta-analysis will be published in a peer-reviewed journal. Conclusion: Our study will provide the evidence for the clinical efficacy and safety of acupuncture at 3-points for intelligence in the treatment of VD.
In the original article, there was a mistake in the legend for ** Figure 8 Figures, tables, and images will be published under a Creative Commons CC-BY licence and permission must be obtained for use of copyrighted material from other sources (including re-published/adapted/modified/partial figures and images from the internet). It is the responsibility of the authors to acquire the licenses, to follow any citation instructions requested by third-party rights holders, and cover any supplementary charges.In the original article, there was a mistake in ** Figure 7 Figures, tables, and images will be published under a Creative Commons CC-BY licence and permission must be obtained for use of copyrighted material from other sources (including republished/adapted/modified/partial figures and images from the internet). It is the responsibility of the authors to acquire the licenses, to follow any citation instructions requested by third-party rights holders, and cover any supplementary charges.In the original article, there was a mistake in ** Figure Figures, tables, and images will be published under a Creative Commons CC-BY licence and permission must be obtained for use of copyrighted material from other sources (including republished/adapted/modified/partial figures and images from the internet). It is the responsibility of the authors to acquire the licenses, to follow any citation instructions requested by third-party rights holders, and cover any supplementary charges.
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