Objective In order to analyse the problem that eligible water from factory will deteriorate during the transportation in the water supply networks. The aim of the present paper is to provide theoretic basis to ameliorate the water quality and make drinking water more secure. Methods Regarding water supply networks as a grey system, applying grey relational analysis to establish the attribution recognition model. The classification of water quality was treated as a grey sort and the state of water quality was a grey system. Water quality classified rank was determined and the water quality was analyzed according to the grey relation analysis theory. Results Three monitoring spots in north networks which included fourteen water quality gene was calculated. The relation degree matrix was educed. The result showed that the water quality of the first and the third monitoring spots belonged to grade one, and the second spot belonged to grade two. Conclusion Applying attribute recognition model based on the grey relation to analyze the water quality in the water supply networks, the case study shows that the grey relational analysis method is more reasonable, simple, reliable and informative. The effect of subjective factors is eliminated. The accuracy of model is verified by the experimental data in the end. There is a good agreement between the calculated result and actual condition.

0.05).Conclusion The rat corneal neovascularization induced by alkali cauterization can be significantly inhibited by local application of 0.025%,0.1% Nordy eye drops that have no toxicity and adverse effect.

Objective To explore the role of resolvin D1 in reducing brain injury after porcine cardiopulmonary resuscitation and its potential mechanisms.Methods Twenty-eight male domestic pigs weighing (36 ±3)kg were utilized.The animals were randomly divided into 4 groups (n =7 each):sham operation group (group S),cardiopulmonary resuscitation group (group CPR),low-dose resolvin D1 gToup (group LRD),and high-dose resolvin D1 group (group HRD).The animals in group S only got the general preparation without the procedure of cardiac arrest and resuscitation.The pig model was established by 8 mins of untreated ventricular fibrillation and then 5 mins of cardiopulmonary resuscitation.At 5 min post-resuscitation,the doses of resolvin D10.3 μg/kg,and 0.6 μg/kg were correspondingly injected via the femoral vein in LRD and HRD groups,and meanwhile the same amount of vehicle was given into the animals inthe other two groups.At 3 h,6 h and 24 h post-resuscitation,the concentrations of neuron specific enolase (NSE) and S100B protein (S100B) in serum was measured.At 24 h post-resuscitation,neurological deficit score (NDS) was evaluated;thereafter the pigs were sacrificed,and cerebral cortex was obtained for the determination of tumor necrosis factor-alpha (TNF-α),interleukin-6 (IL-6),and malondialdehyde (MDA) contents,and superoxide dismutase (SOD) activity.Results Compared to group S,post-resuscitation brain injury was observed in the other three groups,which was indicated by significantly increased NDS score,and markedly elevated concentrations of serum NSE and S100B.Compared to group CPR,the NDS was significantly decreased at 24 h post-resuscitation,and the concentrations of serum NSE and S100B were significantly reduced at 6 h and 24 h post-resuscitation in LRD and HRD groups.Compared to group LRD,the NDS score and its serum markers were further significantly decreased in group HRD.The inflammatory response and oxidative stress in brain tissue were observed in all the animals experiencing cardiac arrest and resuscitation,which were indicated by increased contents of TNF-α,IL-6 and MDA and decreased SOD activity.Compared to group CPR,the contents of TNF-α,IL-6 and MDA were significantly decreasedwhile SOD activity was significantly increased in LRD and HRD groups.The indicators of inflammatory response and oxidative stress in brain tissue were further significantly improved in group HRD when compared to group LRD.Conclusions Resolvin D1 can reduce post-resuscitation brain injury in a dose-dependent manner in swine,and the mechanism is related to the inhibition of inflammatory response and oxidative stress.

Objective To evaluate the therapeutic effect of autologous fat grafting in secondary cleft lip.Methods Grafting of autologous fat granules was applied to correct lip under-capacity.The technique was used in 40 patients with secondary cleft lip from June 2011 to December 2015.The ratios between the point of upper lip peak to vermilion height and to white lip height on the affected side were measured by Photoshop CS6.Results Satisfactory results were achieved with all 40 patients;the lip contour and morphology improved.The preoperative ratio was 0.417±0.190 and the postoperative ratio was 0.499±0.197, which increased average 26.02%, with statistically significant (P<0.05).Conclusions Autologous fat grafting to correct lip under-capacity with secondary cleft lip is a safe, effective and micro-invasive method which can be sustained over a lengthy period.

Objective To discuss the feasibility and effectiveness of transcatheter implantation of double-ring aortic valve stent through puncturing the tip of the heart under thoracotomy.Methods A novel double-ring aortic valve stent was independently designed by the authors.Three healthy goats were selected for this study.A small incision on the left anterolateral thoracic wall was made to expose the cardiac apex,than the puncturing of the left ventricular apex was performed to establish the working pathway.Guided by fluoroscopy,along a hard guide wire a double-ring aortic valve stent was inserted through a 22-French sheath to the site above the aortic valve.By utilizing the opened outer ring of the stent,the double-ring aortic valve stent was accurately placed at the bottom of the aortic valve sinus.Then,the balloon was inflated and the stent was released to substitute the original aortic valve of the experimental goat.The experiment results were evaluated immediately after the procedure.Results Transcatheter aortic valve implantation (TAVI) was successfully accomplished in all the three experimental goats.DSA was performed immediately after the procedure and anatomy evaluation indicated that the position of the implanted artificial aortic valve was satisfactory,which could replace the work of original valve.Conclusion It is technically feasible and clinically effective to use this novel double-ring aortic valve stent to perform TAVI through transapical route by puncturing the left ventricular apex.

Objective Secondary deformities are common in people born with unilateral cleft lip and palate.In recent years,more and more attempts and efforts have been directed toward the restoration of normal muscle anatomy.The authors present a new method of orbicularis oris repair in secondary cleft lip repair.Methods From July 2009 to December 2011,24 patients underwent this procedure in the authors' department.Muscle reconstruction was divided into three units that dealed with the nasal base,white lip and red lip.Common anatomic pathologies including the displacement of upper lip,flared ala,blunted ala-facial groove,depressed nasal floor,lateral bulge,lack of philtrum column,free border deficiency and unapparent vermilion tubercle were corrected in a single operation.Results The average follow-up period was 16.79±6.23 months.No major complications occurred.All the patients were satisfied with their nasolabial appearance.Conclusions "Three-unit" muscle repair has found to be effective and practical in secondary repair.Favorable results demonstrate that improved aesthetic and functional results can be achieved with this comprehensive procedure.

Objective To explore the features of magnetic resonance imaging (MRI) and removal procedures of the polyacrylamide hydrogel (PAAG) injections from the breast.Methods From January 2015 to December 2016,113 continuous cases of breast PAAG implants were involved into this study.Features of MRI,characteristics of PAAG and tissue changes around PAAG were recorded and analyzed.Results The PAAG was demonstrated high T2 signals on MRI that was consistent with the surgical findings.In total of 226 breasts,the PAAG injected implants were removed with peri-areolar incision approach,and PAAG in free state was squeezed and capsular or infiltrated tissues were dissected.In 15 breasts,capsules were thin with no infiltrated tissue.In other 211 breasts,a lot of PAAG infiltrated tissues were observed and these infiltrated tissues included gland,fat tissue,pectoralis major muscle,pectoralis minor muscle or intercostal muscles.Conclusions In these cases,PAAG has been injected into breasts for 7 to 20 years.For such long period,PAAG infiltrated tissues present a lot of difficulties and more complicated to remove.Dissection is the strategy we recommend.

Objective:To present a new method of vermilion tubercle reconstruction in secondary cleft lip repair.Methods:39 secondary cleft lip repair patients underwent the operation of vermilion tubercle reconstruction with a vermilion flap transferred vertically. The procedures of the reconstruction mainly included three processes, restoring the vermilion tubercle tissue in the cleft area, widening the vermilion with the vermilion flap, and augmenting the volume of the tubercle with the muscle tissue underlying that vermilion flap. The width of the vermilion and the projection of the vermilion tubercle were measured before and after operation, and then two sets of data were analyzed with paired-samples t test. A patient satisfaction survey was performed postoperatively to evaluate the effect of the reconstruction.Results:The reconstructions of vermilion tubercle were successful in all patients and no complications occurred. The most of new vermilion tubercles located in midline and appeared plump. Follow-up had been completed in 28 patients and the average follow-up period was (9.71±5.02) months. The effective vermilion width increase was from (5.32±0.91) mm, (3.98±0.89) mm, (4.30±0.86) mm before operation to (6.35±0.87) mm, (7.75±1.03) mm, (7.48±0.97) mm after operation in the midline of lip, the peak of cleft side and the midline of short arm, respectively. The postoperative width of vermilion in the cleft side was widened significantly. The projection of the tubercle was increased significantly from (0.38±0.46) mm to (0.83±0.51) mm. 96.4% (27) patients achieved satisfied results of vermilion tubercle reconstruction after operation.Conclusions:The vermilion flap transferred vertically has been found to be an effective method of vermilion tubercle reconstruction in the secondary repair of cleft lip.