The detection of blood flow velocity has great significance for blood vessel monitoring and the research of cardiovascular pathogenesis. Blood flow velocity measurement based on ultrasonic is becoming more and more popular in doctors and patients compare to several other techniques in nowadays, as they are non-invasive, cheap and fast. Most of the traditional ultrasonic blood flow velocity measurement methods are based on the Doppler frequency shift, but theses methods have some limitations, such as angle dependence, limited spatial resolution and so on. Therefore, blood flow velocity techniques based on non-Doppler frequency shift also get rapid development in recent years. This article mainly summarizes the techniques of blood flow velocity estimation based on ultrasonic in these two aspects.
Blood Flow Velocity ; Humans ; Ultrasonography

Objective To determine wherher acarbose could decrease the risk of recurrent stroke in impaired glucose tolerance(IGT)patients with ischemic stroke.Methods Four hundred and sixteen patients with transient ischemic attack(TIA)or minor ischemic stroke were selected into this trial and participated 75g oral glucose tolerance test(OGTT)1 month after their diagnosis and recovery of the disease.One hundred and nineteen IGT patients were randomly divided into two groups.Patients in pharmaceutical intervention group were treated with acarhose while those in the observation group were not.Seventy patients were selected randomly in those patients without IGT(control group).All patients of the three groups were administered low dose aspirin.Results During 3 years follow-up,8 patients (13.33%)experienced a stroke in pharmaceutical intervention group.The risk of recurrent stroke was decreased significantly compared with that in observation group(P＜0.05),and there Was no significant difference between pharmaceutical intervention group and control group (P＞0.05). Conclusion Acarbose can degrade the risk of recurrent stroke in IGT patients with ischemic stroke.

BACKGROUND: Cervical orthosis is one of the non-surgical therapeutic methods for the remedy of cervical deformities. The introduction of cervical orthosis into the clinical remedy of cervical deformities resulted by burn can maximally restore the cervical function of the patients.OBJECTIVE: To analyse the clinical applicative mode and the effects of moulded cervical orthosis (MCO) on cervical burn.DESIGN: A before-and-after verification study by employing pateitns as subjects.SETTING: Prosthetics and orthotic department in a provincial artificial limb center.PARTICIPANTS: Totally 19 cases including 13 males and 6 females after skin-transplantation due to serious burn in head, neck and chest admitted by the outpatient department of prosthetics center between January and September 2003.METHODS: Nineteen patients with cervical burn wore MCO. Return visits were made afterwards for the evaluation of the treatment effects of MCO.MAIN OUTCOME MEASURES: Resutls of therapeutic effectiveness evaluation.RESULTS: All nineteen patients with cervical deformities due to burn reached the effects of correcting cervical flexion and restoring cervical functions through wearing orthosis. The cervical functions restored entirely in seven cases, almost restored in eight cases and improved in four cases.CONCLUSION: MCO can be clinically used on cervical deformities resulted by burn and provide good effects on remedy and rehabilitation.

Objective_To study the effect of Y-27632 on invasion and motility of SGC-7901 gastric carcinoma cells, and to find whether Y-27632 excerts the effect by attenuating SRF expression.Methods_SGC-7901 gastric carcinoma cells were divided into 3 groups:1)blank control group;2)Y-27632 group;3)siRNA-SRF-1107 group. Transfected siRNA-SRF or incubated by Y-27632 48 h.The effect of Y-27632 on proliferation suppressions of SGC-7901 gastric carcinoma cells was detected by CCK-8 assay.Cell invasion was examined by Transwell and wound healing test.The expression of SRF, ROCK1, E-cadherin, β-catenin, F-actin, MRTF-A and Cyclin D1 were detected by Western blot.Results_Y-27632 inhibited invasion (P<0.05)but had no effect on proliferation of SGC-7901 gastric carcinoma cells.Y-27632 reduced ROCK1, MRTF-A, F-actin, SRF protein expressions by 37.0%, 44.3%, 62.7%and 62.7%respectively, and E-cadherin protein expression was up-regulated by 2.64 folds(P<0.05).Conclusions_The inhibition of ROCK and up-regulation of E-cadherin by Y-27632 can inhibit the invasion and migration of SGC-7901 gastric carcinoma cells that is explained at least, in part, by attenuating SRF expression.

Objective To investigate the effects of geraniin on platelet aggregation and platelet-neutrophil interactions.Methods Platelet aggregation,in vitro and ex vivo,was determined by use of Born's method,and the binding of thrombin-stimulated platelets to neutrophils was observed based on the rosette assay.Intracellular calcium concentration of platelets was measured by using Fura-2-AM.Results Geraniin in vitro significantly inhibited arachidonic acid (AA)-,adenosine diphosphate (ADP)-,or platelet activating factor (PAF)-induced platelet aggregation,in a concentration-dependent manner.The medium inhibitory concentrations (IC50) were 2.4,0.4 and 1.1 μmol/L,respectively.Intragastric geraniin at 5 mg/kg markedly suppressed platelet aggregation induced by AA,ADP,or PAF.Geraniin decreased the total rise of [Ca2+]i,Ca2+ release,and Ca2+ influx,in a concentration-dependant manner.The IC50 values were 71.9,84.9,and 62.9 μmol/L,respectively.Geraniin decreased the binding of thrombin-stimulated platelets to neutrophils,and significantly inhibited washed platelet aggregation stimulated by fMLP-activated neutrophils.The IC50 values were 3.2 and 10.2 μmol/L,respectively.Conclusion It is suggested that geraniin inhibited platelet aggregation in vitro and ex vivo,decreased the calcium mobilization of platelets,and suppressed the interactions between platelets and neutrophils.

Objective:To determine children ’ s health status and influential factors in Nujiang prefecture , Yun-nan.Methods:Rickets morbidity rate , growth retardation rate , and low-weight rate were selected as the key indica-tors to calculate the sample size by using four-stage-sampling procedure .The data was collected through questionnaire survey, in-depth interviews, and focus-group discussions .χ2 test and qualitative analysis were used to analyze the quantitative and qualitative data .Results:The infant mortality rate was 13.14 %in 2011, which was 1.1 and 1.15 times more than the national and provincial average .The mortality rate of children under five was 16.35%in 2011, which was 1.05 and 1.13 times more than the national and provincial average .It was also 2.19 times more than the average in developed countries .The prevalence of medium and severe malnutrition in children under five was 2 .32%, which was 1 .54 times more than the national average .The incidence of low birth weight was 1 .41%.The research shows that the rates of rickets , growth retardation , and low-weight were 36.13%, 25.81%and 20.98%,and nutritional diseases are more serious .Conclusion:There are serious health problems for children in Nujiang pre-fecture, especially nutritional diseases .Influential factors include health policy and system , economic development, customs, geography, health service capacity , and parental health knowledge Suggestion:The government should im-prove top-level design , strengthen policy support , and develop the local economy in order to solve the social and poli-cy environment factors .Institutions and human capacity should be strengthened , access and quality of services should be improved , health education should be popularized , and health awareness and behaviors should be improved .

In this paper , we summarize the theoretical models and research progress about program evaluation and practical situation of children ’ s health in Nujiang prefecture .We then develop a framework for comprehensively evaluating the intervention for children ’ s health based on program theory .This framework comprises the outside pro-gram environment , intervention action modules and change modules , and assessment techniques environment .The e-valuation mainly includes leading agencies , implementing agencies , coordinating agencies , coordination/implementa-tion personnel , intervention and service standards , the environment and atmosphere , target populations , interven-tions, determinants, outcome and effect .

The Theory of Change holds that the change in a project ’ s effectiveness can be derived from the changing process in the certain context .Only after analyzing changes caused by a project and the possible changing path or hypothesis can we determine the real cause of an effect .In 2012, the maternal, child and community health department of the former Ministry of Health began a comprehensive intervention project for children ’ s health in Nu-jiang Prefecture .The project was designed to explore modes and mechanisms for improving children ’ s health in the west, poverty and ethnic minority areas through cooperation at the national , provincial, and prefecture levels.Based on the Theory of Change , this article describes the logical framework of the comprehensive intervention project .In or-der to lay the foundation for improving the project design , ensuring the implementation of the project and conducting the follow-up monitoring and evaluation , we also expound the goals , implementation strategies , and intervention measures, project activities and output , implementation routes .

OBJECTIVE To observe the effects of Dexamethasone on the expression of cyclic nucleotide-gated channels (CNG channels) mRNA of olfactory receptor neurons (ORNs) by real-time quantitative reverse transcription-polymerase chain reaction(RT-PCR). METHODS Forty Wistar rats were randomly divided into four groups: 24-hours Dexamethasone treated group and its control group; 2-weeks Dexamethasone treated group and its control group. Dexamethasone was injected i.p. (1 mg/kg for 24-hours group, 0.2 mg/d for 2-weeks group). Control group rats were injected with the same volume of normal saline. Real-time quantitative RT-PCR was performed to evaluate mRNA production of CNGA2 subunits. RESULTS In Dexamethasone-injected rats, the up-regulation of CNGA2 mRNA was observed in 2-weeks group(P

Objective To assess the safety and efficacy of extended liver resection using preoperative PTCD (percutaneous transhepatic cholangial drainage) and PVE (portal vein embolization) to treat patients with locally advanced hilar cholangiocarcinoma.Methods We collected and analyzed the clinical data of 27 patients with Bismuth types Ⅲ and Ⅳ hilar cholangiocarcinoma who underwent extended hepatecomy using preoperative PTCD and PVE in our hospital.Results There were 21 patients with R0 resection and 6 patients with R1 resection.The mortality rate was 0％.Eight patients died of cancer recurrence.Conclusion Preoperative PTCD and PVE combined with extended hepatectomy were safe and efficacious in treating patients with locally advanced hilar cholangiocarcinoma,which resulted in potential cure.