This paper introduces the hardware of data acquisition system based on LabVIEW platform, i.e. the system for data acquisition and control. The system is composed of the units for signal selection, programmable magnification, filtration, restriction, and A/D and D/A conversion circuits. With the system, the following can be available including eight-channel low-frequency signals, eight options on programmable magnification, 1000Hz low-pass filter, 50Hz power-frequency trap, and A/D and D/A conversion.

Wavelet transforms are used in detecting ECG characteristic points recognition.The relationships between ECG characteristic points and the modulus maximum pairs of their wavelet transfoms are expounded.The application perspective of wavelet transforms to ECG characteristic points recognition is predicted through the analysis of the results.

Objective To investigate the changes of human epidermal stem cells after transfected with human telomerase reverse transcriptase(hTERT)gene.Methods The plasmid pIRES2-EGFP and plasmid pIRES2-EGFP-hTERT encoding hTERT were transfected into in vitro cultured human fetal epidermal stem cells by liposome-mediated transfection.Then,the positive cells were selected with G418.The mRNA and protein expressions of hTERT were detected by reserve transcriptase-polymerase chain reaction(RT-PCR)and Western blot.The telomerase activity and the proliferation and cycle of human epidermal stem cells were detected by telomeric repeat amplification protocol(TRAP)-ELISA and flow cytometry respectively.Results RT-PCR and Western blot techniques detected weak mRNA and protein expressions of hTERT gene in untransfected and vacant vector transfected cells but high level of mRNA and protein expressions of hTERT gene in pIRES2-EGFP-hTERT transfected cells.Compared with untransfected and vacant vector transfected cells,the pIRES2-EGFP-hTERT transfected cells had higher telomerase activity,with lower proportion of cells at G_0/G_1 phase,higher proportion of cells at S and G_2/M phases and enhanced proliferation ability.Conclusion Transfection with hTERT gene can markedly enhance mRNA and protein expressions,telomerase activity and proliferation ability of hTERT gene of human epidermal stem cells euhured in vitro.

Objective T o explore the crim inal characteristics of forensic psychiatry expertise in depression patients and schizophrenics w ith hom icide behavior. Methods A total of 40 depression (depressive episode) patients and 50 schizophrenics w ith hom icide behavior w ere random ly assigned into the study group and control group, respectively. D ata of dem ographic and crim inal characteristic of the tw o groups w ere collected by a self-designed questionnaire, and then w ere com pared. Results T here w ere no statis-tical differences in age, education level and career betw een study and control groups (P>0.05). C om pared w ith the control group, the victim s in the study group w ere m ainly the patient's children and parents, and m ost offenders had suicidal behavior after hom icide (70% ). In study group, the m otives of crim e w ere m ainly extended suicide and indirect suicide, and m ost offenders had attem pted suicide (85% ) and dim inished capacity of crim inal responsibility (70% ), w hich in control group had no capacity of crim inal responsibility (56% ). E xcept for crim inal site, there w ere statistical differences in other crim inal charac-teristics betw een tw o groups (P<0.05). Conclusion T here are different crim inal characteristics betw een de-pression patients and schizophrenics w ith hom icide behavior in forensic psychiatry, and these characteris-tics should be considered w hen these tw o diagnoses are distinguished in forensic psychiatry expertise.

Objective To investigate the diagnosis and treatment of pancreatic cystic tumors. Methods The clinical data of 35 patients with pancreatic cystic tumors were retrospectively analyzed. Results The preoperative diagnosis rate was as follows: ultrasound was 28.6% ( 10/35 ), CT 44.4% ( 12/27 ), MRI 70% (7/10). Twenty-eight cases underwent operation and were diagnosed finally by postoperative pathology. Serous cystic neoplasm (SCN) was found in 2 cases, mucinous cystic neoplasm (MCN) in 9 cases,cystic adenocarcinoma in 7 cases, intraductal papillary mucinous neoplasm ( IPMN ) in 3 cases, solid pseudopapillary tumor (SPT) in 7 cases. Twenty-three cases were followed up successfully. The post-operative 5 years survival rate was 62.5% (5/8) in pancreatic cystic adenoma without recurrence. The longest survival time in cystic adenocarcinoma after complete resection was 5 years and 8 months, while in which after incomplete resection was 6 months. The 4 cases of SPT are all alive, and one of them has survived for 4 years as the longest one. Conclusions It is difficult to diagnose the pancreatic cystic neoplasm accurately before operation. CT and MRI may be helpful to make the diagnosis. Surgical resection is the most effective treatment. The enhancement of the communication and cooperation between the related departments, the early diagnosis, and the appropriate operation are needed to improve the diagnostic and therapeutic efficacy.

Objective To analyze expression of interleukin (IL)-23p19 and IL-23 receptor (IL-23R) in inflammatory bowel disease (IBD),and the role in the induction of peripheral blood T cell activation and proinflammatory cytokine secretion.Methods Peripheral blood (PB) and intestinal mueosal biopsies were collected from 12 patients with Crohn's disease (CD),25 patients with ulcerative colitis (UC) and 20 healthy controls.Expression of IL-23p19 was determined by immunohistochemistry and RT-PCR.IL-23R expression in CD4+,CD8+ T and NK cells from peripheral blood and lamina propria was analyzed by flow eytometry.Peripheral blood mononuclear ceils (PBMC) were isolated and cultured under stimulation with IL-23 and anti-CD3,and the levels of tumor necrosis factor α (TNFα) interferon (IFN)γ and IL-2 were determined by enzyme-linked immunosorbent assay (ELISA).Results The expression of II.-23p19 was significantly increased in inflamed mucosa of CD at both the transcriptional and translational levels compared with that in UC and healthy controls.IL-23R was mainly expressed in PB- and lamina propria-CD4+,CD8+T cells and NK cells from IBD patients,and markedly increased compared with controls (P＜0.05).IL-23 strongly triggered PBMC from IBD patients to produce significantly higher levels of IFN-γ,TNF-α and IL-2(P＜0.05).Conclusions IL-23p19 and IL-23R are highly expressed in IBD,particularly in CD,and may play an important role in the induction of T cell activation and proinflammatory cytokine secretion,suggesting that targeted therapy directed against IL-23 may have a therapeutic role in IBD.

Objective:To study the relationship between hepatitis B surface antigen(HBsAg)and the primary liver cancer (PLC).Methods:A 20-year prospective follow-up study was performed continuously in Qidong on a cohort of 515 HBsAg positive male patients aged 20-60 years old.The markers of hepatitis B virus,HBsAg,HBsAb,HBeAg,HBeAb and HBcAb (HBVM 1,2,3,4,5)were detected at the first time of the follow-up.Results:The PLC incidence of the whole cohort was 1340.90/100 000 person years(PY).The middle age of the PLC diagnosis was 43 with an average survival of 15 months.The PLC incidence was significantly higher in 41-50 age group than that of other age groups(P＜0.05).The three major HBVM patterns were 15,135 and 145 in the cohort with percentages of 38.83%(200/515),15.92%(82/515)and 44.08%(227/515)respective1y.The PLC incidences of these three patterns were 1 433.69/100 000 PY,2 284.71/100 000 PY,984.10/100 000 PY respectively,showing a significant difference between 135 and 145(P＜0.01).The percentages of 15,135 and 145 were 39.64%(44/111),23.42%(26/111)and 35.14%(39/111)in PLC patients respectively,showing a significant difference between 15 and 135(P＜0.01).The liver cirrhosis mortality of those three patterns were 195.50/100 000 PY,966.61/100 000 PY and 277.57/100 000 PY respectively,showing the significant differences between 135 and other two patterns(P＜0.01).Conclusion:HBsAg carriers were high risk population of PLC.The regular following-up is helpful on early diagnosis and treatment of PLC in those people,and can prolong the survival time.It was found that 135 had higher PLC risk than other HBVM patterns,suggesting a relationship between HBV duplication and PLC.The anti-virus treatment may delay or remove the occurring of PLC.

Objective To explore the relations of the doctor-patient relationship to psychological security and stress.Methods Totally 430 operation patients were selected and followed-up.A survey was performed using the Security Questionnaire (SQ),the Patient Doctor Relationship Questionnaire 13-Item Version (PDRQ-13),the Hospital Stress Rating Scale (HSRS) Results The average score of SQ was lower than medium value in operation patients.The SQ scores of operation patients with emergency operation were 39.50±10.51,lower than those of selective operation which were 49.02±10.37 and limited operation which were 47.67±10.29 (P ＜ 0.05).The SQ scores of operation patients who didn't provided themselves were 37.33±10.10,lower than those of basically which were 40.10±10.83 and partly provided for themselves which were 43.50±10.51 (P＜ 0.05).The SQ scores of operation patients in severe group according severity of illness were 37.13±10.40,lower than those of them in mild group which were 39.19±10.24 and moderate group which were 41.38±10.01 (P＜ 0.01).The SQ scores of post-operation patients were 44.32±9.96,higher than post-operation patients which were 40.36±10.81 (P ＜ 0.01).The lack of comforts (LC),lack of information (LI) and risks of serious disease (RSD) scores of post-operation patients were 49.23±30.62,30.46±21.42,52.84±31.22,lower than those of post-operation patients which were 52.37±32.06,35.25±20.14,80.12±33.18 (P ＜ 0.05).The path analysis showed that the regression relationship between SQ scores and PDRQ scores,RSD scores was established (β=0.40,-0.26,P ＜ 0.01),and the PDRQ-13 scores was a mediator between the scores of LC,LI,RSD and the SQ scores (β=0.40,P＜0.01).The PDRQ-13 scores was a adjustor between the RSD scores and the SQ scores (β=-0.34,P ＜ 0.01).Conclusions The operation patients have a low level of the sense of security which is statistically significant with surgical types,the ability to care for themselves and severity of illness.The sense of security of post-operation patients were higher than those of pre-operation patients.The recognition of physician-patient relationship may be play a mediating and adjusting role between the sense of security and stress.The surgical stress affect patient security and physician-patient relationship.

ObjectiveTo evaluate the therapeutic value of neoadjuvant chemotherapy for patients with stages Ⅱ and ⅢA(Only T3N1M0) breast cancer,and assess the relationship of the tumor size and pathologically complete response.MethodA total of 408 breast cancers patients at stages Ⅱ and ⅢA,were studied,which were divided into neoadjuvant chemotherapy group (group A) and control group (group B).All patients of group A received 2-4 cycles NAC with TE scheme in breast cancer.The impact of neoadjuvant chemotherapy on surgical methods choice,local control rate,5-year overall survival rate and 5-year disease free survival rate were analyzed.ResultsFor patients of stage Ⅱ,the rate of breast conservation significantly increased from 23.6％ to 49.1％ (P =0.000) and there was no significant difference between groups A and B ( P =0.939,0.858 ) in 5-year overall survival rate and disease free survival rate.For patients of stage ⅢA,the 5-year overall survival rate (59.8％ ) and disease free survival rate (51.8％) in group A were greatly higher than that in group B (35.7％ and 27.6％ ) (P =0.000,0.000).The 3-year local relapse and metastasis rate(7.9％ ) was lower than group B (18.4％)(P ＜ 0.05 ).The tumor less than 3.0 cm is easy to achieve pathological complete remission (P =0.001 ).ConclusionsThe neoadjuvant chemotherapy can improve potential rate of breast conservation,reduce the rate of local-regional recurrence rate for the patients with stage Ⅱ and ⅢA breast cancer,and also improve the 5-year survival rate for the patients of stage ⅢA.Patients with clinically complete response or PCR may have higher 5- year overall survival rate and disease free survival rate.Primary tumor size was found to be the significant predictive factor for pathologically complete response to neoadjuvant chemotherapy in patients with breast cancer,particularly,the small tumor is easy to reach pathologically complete response.

As an advanced medical management mode, attending physician responsibility system is an important means for public hospitals to promote refined management. The authors analyzed the characteristics and problems of the three-level rounds system, sorted out the concept and feasibility of attending physician responsibility system, summarized the exploration and practice of the attending physician in China, and put forward some suggestions on the implementation path of attending physician in China by strengthening medical quality management, making fully reasonable use of hospital resources, carrying out " two permits" and improving the supporting management system of the attending physician.