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Acupotomy for Lumbar disc herniation
Chen Xilin,Fu Xinyi,Luo Zhichao,Xin Wenshan,Wang Quangui,Lee Mira,Guo Changqing 대한침구의학회 2020 대한침구의학회지 Vol.37 No.3
Background: The aim of this study was to examine whether the effects of acupotomy therapy were beneficial for the treatment of protrusion of lumbar intervertebral disc. Methods: The number of patients (n = 80) were equally assigned into treatment group and control group. Treatment group was given acupotomy therapy twice a week, and control group was given acupuncture 3 times a week, for 4 weeks. The beneficial effect and changes in score of the Japan Orthopedic Association (JOA) for low back pain were observed. Results: Among 40 cases in the treatment group, there were 25 (62.5%) with an excellent effect, 13 (32.5%) with good effect, 1 (2.5%) with a medium effect and 1 (2.5%) with poor effect, with the total experiencing an excellent/good effect of 95.0%. Among 40 cases in the control group, there were 11 (27.5%) with an excellent effect, 17 (42.5%) with good effect, 10 (25.0%) with a medium effect, and 2 (5.0%) with poor effect, with an excellent/good rate of 70.0%. The result of the rank sum test showed Z = -4.923, p < 0.05 in the comparison, indicating a significantly better outcome following acupotomy compared with acupuncture. JOA scores increased in both groups after treatment (p < 0.05), which was more significant in the acupotomy treatment group (p < 0.05). Conclusion: Acupotomy therapy has a beneficial effect on protrusion of lumbar intervertebral disc.
Transient Safety Analysis of M2LFR-1000 Reactor using ATHLET
Chong Shen,Xilin Zhang,Chi Wang,Liankai Cao,Hongli Chen 한국원자력학회 2019 Nuclear Engineering and Technology Vol.51 No.1
M2LFR-1000 is a medium-power modular lead-cooled fast reactor, developed by University of Scienceand Technology of China (USTC), aiming at achieving a reactor design fulfilling the Gen IV nuclear systemrequirements and meanwhile emphasizing the optimum safety and economics. In order to evaluate thesafety performance of M2LFR-1000 reactor core, three typical transients are selected from initiatingevents, which are unprotected transient overpower (UTOP), unprotected loss of offsite power(ULOHSþULOF) and increase of feedwater flowrate with primary pumps trip (IFWþPLOF). These threetransients presented and discussed in this paper are performed with the code Analysis of THermalhydraulicsof LEaks and Transients (ATHLET), which is developed by Gesellschaft für Anlagen-undReaktorsicherheit gGmbH (GRS). The results indicate that the M2LFR is safe enough under these threetransients due to the good inherent safety features of the reactor, without human intervention, thereactor will reach a new steady state under UTOP condition
An Assessment Study of Seismic Resistance of Two-story Wood-frame Housing by Shaking Table Tests
Ni, Chun,Kim, Sang-Yeon,Chen, Haijiang,Lu, Xilin Land and Housing Institute 2012 LHI journal of land, housing, and urban affairs Vol.3 No.1
While there exists a relatively large body of technical information for the engineered design of wood-frame buildings to resist seismic ground motions, the quantitative assessment of seismic resistance of conventional houses built by prescriptive requirements is less well understood. Forintek Canada Corp., in collaboration with other research and industry partners, has embarked on a research project to address this topic. This paper will report on the seismic shake table tests of a full-scale wood-frame building. The two-story specimen, $6m{\times}6m$ in plan, was built on the seismic shake table at Tongji University in Shanghai, China, according to Part 9 of the 1995 National Building Code of Canada and shaken uni-directionally in each of the two principal directions. Three different seismic table motions were applied at increasing peak ground motion amplitudes up to 0.40 and 0.50 g. The specimen was repaired after the above sets of seismic table motions, and successive runs were conducted for increased door openings. Measurements included specimen accelerations, displacements and anchorage forces. Static stiffness of the specimen was measured at low force levels, and natural frequencies were measured after each seismic loading stage by applying low-level random excitation. The results presented consist of the capacity spectra of the shake table tests, changes in specimen stiffness and natural frequencies with increasing seismic loading. These results and those from other recent shake table tests elsewhere will be compared with simplified engineering calculations based on codified values of strength, and on that basis preliminary conclusions will be drawn on the adequacy of the current code provisions and design guides in Canada and the USA for conventional wood-frame construction.
( Xi Lin ),( Sha Liu ),( Guangrong Xie ),( Jing Chen ),( Penghua Li ),( Jianhua Chen ) 한국미생물 · 생명공학회 2016 Journal of microbiology and biotechnology Vol.26 No.11
Wild strain L-6 was subjected to combined mutagenesis, including UV irradiation, atmospheric and room temperature plasma, and ion beam implantation, to increase the yield of 1,3-dihydroxyacetone (DHA). With application of a high-throughput screening method, mutant Gluconobacter oxydans I-2-239 with a DHA productivity of 103.5 g/l in flask-shake fermentation was finally obtained with the starting glycerol concentration of 120 g/l, which was 115.7% higher than the wild strain. The cultivation time also decreased from 54 h to 36 h. Compared with the wild strain, a dramatic increase in enzyme activity was observed for the mutant strain, although the increase in biomass was limited. DNA and amino acid sequence alignment revealed 11 nucleotide substitutions and 10 amino acid substitutions between the sldAB of strains L-6 and I-2-239. Simulation of the 3-D structure and prediction of active site residues and PQQ binding site residues suggested that these mutations were mainly related to PQQ binding, which was speculated to be favorable for the catalyzing capacity of glycerol dehydrogenase. RT-qPCR assay indicated that the transcription levels of sldA and sldB in the mutant strain were respectively 4.8-fold and 5.4-fold higher than that in the wild strain, suggesting another possible reason for the increased DHA productivity of the mutant strain.