Objective The Improved segmental arch technique can effectively intrude incisors and correct deep overbites. To research its biomechanical characteristics, we reconstruct 3D nonlinear finite element model of mandibular teeth with improved segmen-tal arch, study the biomechanical characteristics and the suitable loading force of intrusion arch. Methods Combined with the re-sults of previous research, we complete the reconstruction of 3D nonlinear finite element model of mandibular teeth with improved seg-mental arch.Then, we set loading force of intrusion arch five conditions from 0.2 N~0.6 N, calculate the movement trend and stress distribution of improved segmental arch. Results In the five conditions of improved segmental arch, lateral incisors and canines in-truded and tipped labially, first molars tipped distally and rotated. In addition, the moment the initial loading force of intrusive arch in-creased, the movement of these teeth increased. However, other teeth did not move clearly. When the initial loading force of improved segment arch was 0.5 N, it can achieve appropriate intrusion of anterior teeth. Conclusion Under an appropriate intrusive force, improved segment arch can effectively intrude incisors and control the extrusion of posterior teeth. It can be used to correct the deep overbites, especially with high mandibular planes, gummy smile or adult stage.

The forced oscillation technique (FOT) is a noninvasive method for respiratory mechanics measurement. For the FOT, external signals (e.g. forced oscillations around 4-40 Hz) are used to drive the respiratory system, and the mechanical characteristic of the respiratory system can be determined with the linear system identification theory. Thus, respiratory mechanical properties and components at different frequency and location of the airway can be explored by specifically developed forcing waveforms. In this paper, the theory, methodology and clinical application of the FOT is reviewed, including measure ment theory, driving signals, models of respiratory system, algorithm for impedance identification, and requirement on apparatus. Finally, the future development of this technique is also discussed.
Algorithms ; Electric Impedance ; Oscillometry ; Physical Therapy Modalities ; Respiratory Mechanics

Objective To investigate the cultivation, biochemical features and drug susceptibilities of Vibrio vulnificus. Methods Three strains of Vibrio vulnificus were isolated from fatal patients in the Second Hospital of Jiaxing, Zhejiang province. Cultivation, identification and antibacterial susceptibility test were performed. Results Vibrio vulnificus grew on blood agar as dull-gray, opaque colonies with β-hemolysis. The organism presented positive in lactose, cellobiose fermentation and O/129 (10 μg) tests, but lack of inositol and rhamnus. The antibacterial susceptibility tests showed that Vibrio vulnificus strains were sensitive to ciprofloxacin, levofloxacin, imipenem, cefepime, ceftazidime, ceftriaxone, compound sulfamethoxazole and nitrofurantoin, however, resistant to gentamicin, tobramycin, aztreonam and cefazolin. Conclusions Vibrio vulnificus can be isolated from blood, bubbles fluid, and stool. Rapid identification, early diagnosis, and prompt empirical antibacterial therapy are important for reducing the mortality.

OBJECTIVE:To investigate the utilization of narcotic analgesics in patients with cancerous pain in our hospital. METHODS:The consumption of Morphine and Pethidine in our hospital in 2004～2007 was analyzed statistically. RESULTS:The consumption quantity of Morphine sulfate controlled-release tablets has been on the rise from 2004 to 2007,while that of Morphine Hydrochloride Injection experienced little change and that of Pethidine Hydrochloride Injection showed a downward trend. CONCLUSION:The structure for the use of narcotic analgesics in our hospital tends to be reasonable,which is basically in line with the Guiding Principle of Pain Relief Ladder for Cancer Pain.

Objective To investigate effects of different sedation methods on the mechanical ventilation patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD).Methods A total of 101 patients with mechanical ventilation in our hospital was randomly divided into observation (58 cases) and control (43 cases) groups.The observation group was given to strengthen psychological care during the day, and the night was given to the patients with AECOPD.The control group was treated with continuous analgesia and sedation, and the daily morning was executed to wake up the plan 1 ～ 2 hours.A set of indexes were observed, including white cell count, C-reactive protein, oxygen index, B-type natriuretic peptide, delirium occurred rate, unexpectedly drawn tube rate, and duration of mechanical ventilation.Results White blood cell number, C reactive protein, and oxygen index group in the observation group were significantly better than the control group [(10.1 ± 2.4) × 109/L vs (11.2 ± 2.8) × 109/L,(40.6 ± 11.6) mg/L vs (45.8 ± 12.2) mg/L, and (285.6 ±45.1) vs (268.2 ±42.6)] (P ＜0.05).The incidence of delirium rate in the observation group was significantly lower than the control group [30/58(51.7％) vs 31/43(72.1％)] (P ＜0.05).The mechanical ventilation time in the observation group was significantly shorter than the control group [(8.41 ± 3.96) d vs (10.35 ± 5.57) d] (P ＜ 0.05).There was no significant difference between B type natriuretic peptide and accidental extubation rate (P ＞ 0.05).Conclusions The night program sedation program can significantly improve AECOPD mechanical ventilation in patients with inflammatory index and oxygen index, reduces the incidence of delirium in patients with acute exacerbation of chronic obstructive pulmonary disease, does not increase the accidental extubation rate, and significantly shortens the AECOPD patients with mechanical ventilation duration of mechanical ventilation, as a mechanical ventilation in AECOPD patients who killed one of the options.

Objective To investigate the clinical value of MR diffusion tensor imaging (DTI) in evaluating diffuse axonal injury (DAI).Methods The DTI imaging data of DAI patients and healthy volunteers were analyzed retrospectively.Fractional anisotropy (FA) values were measured in corpus callosum,etc.The serum myelin basic protein (MBP) was detected.Results Compared to the control group,the FA values were lower in genu of corpus callosum,splenium of corpus callosum,anterior limb of the internal capsule,posterior limb of the internal capsule and thalamus in DAI group (P ＜ 0.01,P ＜ 0.05).The mean FA values of two groups were negatively correlated with serum MBP levels (r =-0.755,P =0.001).Conclusions DTI can noninvasively reflect the damages of white matter fibers in DAI patients,and it has importantly clinical significance in evaluating prognosis and therapeutic effect of DAI patients.

This paper introduces the means and characteristics of signal acquisition of the non-contact life parameters detection system as well as the design of preprocessor circuit.The results show that the preprocessor is designed reasonably,which can provide the computer with high quality signals.

Objective To compare the effect of kidney-tonifying blood-activating recipe (KBR) and Aescuven Forte Tablets ( AFT) in improving the sperm quality of varicocele-induced male sterility, thus to optimize the therapeutic therapy for varicocele-induced male sterility. Methods A total of 102 varicocele-induced male sterility with abnormal sperm parameters after conservative treatment were randomized into KBR group (N=53) and AFT group ( N=49) . KBR group was given KBR plus natural vitamin E and AFT group was given AFT plus natural vitamin E, and the treatment lasted for 8 continuous weeks. Before and after treatment, the quality of seminal fluid was analyzed, sperm quantization parameters such as total number of sperm (TNS) , total number of progressive motility sperm ( TNPS) , total number of normal form sperm ( TNNS) and total number of nor mal form and progressive motility sperm ( TNNPS) were observed, and the improvement rate of sperm quantization parameter was compared. Results (1) Before treatment, the differences of TNS, TNPS, TNNS and TNNPS were insignificant between the two groups ( P>0.05) . After treatment, TNNS was not improved in AFT group ( P>0.05) , but TNS, TNPS, TNNPS were much improved in both groups ( P<0.01 compared with those before treatment) . The improvement of KBR group was superior to that of AFT group ( P<0.05) . ( 2) The improvement rate for TNS, TNPS, TNNS, TNNPS was 90.57%, 79.25%, 67.92%, 77.36%in KBR group, and was 75.51%, 73.47%, 28.57%, 61.22% in AFT group respectively. The improvement rate for TNS and TNNS in KBR group was superior to that in AFT group ( P<0.05 or P<0.01) . Conclusion Varicocele-induced male sterility patients usually have the syndrome of kidney deficiency and blood stasis, so KBR, which has the function of tonifying kidney and activating blood, has synergistic action on the effect of AFT in improving sperm quality of varicocele-induced male sterility patients.

Animals ; Disease Models, Animal ; Hypoglycemia ; chemically induced ; metabolism ; Hypothalamus ; drug effects ; metabolism ; Insulin ; pharmacology ; Intracellular Signaling Peptides and Proteins ; metabolism ; Male ; Neuropeptides ; metabolism ; Orexins ; Rats ; Rats, Sprague-Dawley

Europe ; Humans ; Occupational Medicine ; education ; Students ; United States