The postoperative neurological complications is associated with intraoperative cerebral emboli, which results from extracorporeal circulation and operation. It can effectively reduce the incidence of neurological complications with ultrasonic radiation. In fluids, a particle will change it's motion trail when it is acted by the radiation force generated by the ultrasound. This article mainly discuss how to shielding emboli with ultrasound. The equipment can transmit phased ultrasonic signals, which is designed on a FPGA development board. The board can generate a square wave, which is converted into a sine wave through a power amplifier. In addition, the control software has been developed on Qt development environment. The result indicates it's feasible to shielding emboli with ultrasonic radiation force. This article builds a strong foundation for the future research.
Humans ; Intracranial Embolism ; diagnostic imaging ; prevention & control ; Intraoperative Complications ; prevention & control ; Postoperative Complications ; prevention & control ; Ultrasonics ; instrumentation ; Ultrasonography

Objecttive: The article analyzed how neurophysiological signals of adolescent's working memory(WM) change with increasing age.Methods: We recorded ERP from 52 healthy subjects aged from 14 to 22 years old in three groups.Our experiment consisted of 4 subexperiments and had two types of working memory tasks: spatial working memory and verbal working memory tasks,furthermore,every task included two levels of difficulty.Results: ①Reaction time was faster with increasing age,there was significant difference in accuracy of complicated tasks in different age groups with junior high school group significantly lower than others;②There was significant difference between junior high school group and college group in frontal P200 amplitude and its latency had no significant difference in the three groups;③Occipital P100 amplitude was descending when age was increasing and there had significant difference in latency between junior high school group and college group;④Occipital N160 amplitude was increasing with age and the latency was descending with age and there was significant difference between junior high school group and college group;⑤Average amplitude of parietal P300 was increasing with age and junior high school group's was significantly lower than the other two groups'.Conclusion: Teenager's working memory changes unevenly with age.

Idiopathic pulmonary fibrosis(IPF), as one of the chronic and complex diseases, is with high incidence and mortality rate. It is also a difficult to treat disease in modern medicine. Traditional Chinese medicine (TCM) syndrome differentiation and treatment embodies characteristics and advantages. In recent years, the collateral disease theory guiding the prevention and treatment of the chronic and complex diseases has become a hot point and frontier in medical research, and achieved certain effects. This article is to summary the structures and functions of pulmonary collaterals based on the collateral disease theory. Combined with clinical manifestations of IPF, we put forward Fei-Re Luo-Y u as the fundamental role in the pathogenesis of IPF in its acute phase to lay the theoretical foundation to the further exploration of syndrome prevention and differentiation on IPF in its acute exacerbation.

Objective To investigate the effect of carbon dioxid insufflation on cerebral blood flow (CBF) during laparoscopic cholecystectomy. Methods Thirty patients ASA grade Ⅰ- Ⅱ undergoing laparoscopic cholecystectomy were selected. The values of jugular venous oxygen partial pressure(PjvO2 ) jugular venous oxygen saturation (SjvO2 ), arterial partial pressure of carbon dioxide (PaCO2), oxygen (PaO2) and saturation (SaO2 ) were measured before the insufflation, 10 min and 30 min after the insufnation, respectively. Results Compared with those before the insufflation, SjvO2 and PacO2 were increased significantly, and arterial--jugular venous oxygen content difference (Ca-jvDO2 ) decreased markedly 10 min and 30 min after insufflation (P

Objective To establish a method to determine dicofol and eight pyrethroid pesticides residues in vegetables and fruits by gas chromatography.Methods The crushed samples were extracted with organic solvent,then the extract was analyzed by DM-17 capillary column gas chromatography after being purified by PestiCarb-NH2 cartridge and silica cartridge solid phase extraction.Results The detection curve covered the linear range of 0.10-2.0 ?g/ml .The minimum detection limit was 0.011-0.090 ?g/kg.The rates of recovery were 85.4%-105%.The variable coefficient(RSD) was under 7.0%.Conclusion This method has the advantages of less disturb, simple and high accuracy, and it can be applicable to the routine analysis of dicofol and pyrethroid pesticides residues.

ObjectiveTo explore the physical growth and development conditions of the disabled children (except physical disability) aged 7～18 in Guangzhou and Dongying.MethodsA census was carried out among disabled children aged 7～18 in Guangzhou and Dongying. The physical growth and development condition was analyzed through height and weight of the disabled children.ResultsHeight and weight of the disabled children were both lower, compared with physically healthy children. The rate of thinness was 12.61% among the boys and 12.54% among the girls of the disabled children, the rate of growth retardation was 31.41% among the boys and 34.94% among the girls of the disabled children.ConclusionDisabled children aged 7～18 are in bad condition of physical growth and development. The rates of thinness and growth retardation are high among boys and girls with disability.

This study was aimed to summarize and analyze acupoint selection rule of acupuncture in the treatment of primary dysmenorrhea in recent years,and to guide acupoint selection and compatibility in clinical practice.Relevant literatures in recent years were retrieved from the China National Knowledge Infrastructure (CNKI) full-text database.And then,literatures involving acupuncture prescriptions were summarized.Data were integrated and input.Finally,the SPSS software was combined to analyze the data of acupoint selection in the acupuncture prescription to achieve the conclusion.The results showed that in the acupuncture treatment of primary dysmenorrhea,the main meridian selections were the Ren Meridian and the Spleen Meridian of Foot Taiyin.The generally used acupoints were SP6-Sanyinjiao,RN4-Guanyuan,SPS-Diji,and etc.The multi-point compatibility therapy was used.It was concluded that although the advantages of acupuncture in the treatment of primary dysmenorrhea are prominent,the pathogenesis is mainly related to the liver,spleen and kidney,which are recognized by most physicians.However,there are still large differences in acupoint compatibility and acupoint selection.Hence,there are still no unified,scientific and standardized diagnosis and treatment standards.Further exploration should be made to guide clinical practice.

Objective To detect the expression of Per2 and VEGF in NSCLC tissue,and analyze its clinical significance.Methods The expression of Per2 and VEGF was measured in 60 NSCLC and 20 normal lung tissue by immunohistochemistry assay,then the relation with clinicopathological parameters was analyzed.Results The positive expression rate of Per2 in NSCLC and in normal lung tissue were 71.7％ and 95.0％ ( x2 =4.683,P ＜0.05 ),while the positive expression rate of VEGF were 58.3％ and 15％ (x2 =11.295,P ＜ 0.01 ).The negative expression of Per2 in NSCLC was correlated with pathological differentiation or TNM stage( x2 =4.413,6.179,all P ＜0.05),while the positive expression of VEGF in NSCLC was correlated with pathological differentiation or lymphatic metastasis (x2 =6.524,P ＜ 0.05 ).The expression of Per2 was negatively correlated with the expression of VEGF in NSCLC (r =-0.381,P ＜ 0.01 ).Conclusion The overexpression of VEGF in NSCLC may contribute to invasion and metastasis,while Per2 may be a beneficial prognosis factor in patients with NSCLC.

Objective Proximal humerus fracture is the most common upper-arm osteoporotic fracture in elderly patients and the result of treatment directly affects the physiological function of the shoulder .This article discusses the clinical effect of the locking proximal humeral plate ( LPHP) combined with anti-osteoporosis drugs in the treatment of osteoporotic comminuted proximal humerus fractures in elderly patients . Methods This study included of 47 elderly osteoporotic patients with comminuted proximal humerus fractures treated from April 2009 to March 2012 and with complete follow-up data.According to the Neer classification , the patients were divided into groups A (LPHP treatment, n=23, including 13 cases of three-part fractures and 10 cases of four-part fractures) and B (LPHP+anti-osteoporosis drugs, n=24, including 13 cases of three-part fractures and 11 cases of four-part fractures). Results All the patients were followed up for 14 to 38 (mean 23.6) months.The postoperative healing time was significantly shorter in group B than in group A ([96.57 ±2.59]d vs [115.91 ±2.73]d, P<0.05), and the excellence rate was remarkably higher in B than in A (91.7%vs 78.3%,P<0.05). Conclusion With the advantages of short healing time and high excellence rate , LPHP+anti-os-teoporosis drugs is superior to simple LPHP in the treatment of osteoporotic comminuted proximal humerus fractures in elderly patients.

Objective To introduce several commonly used puncture techniques for retroperitoneal lymph node metastases in order to provide technical guidance in performing 125I seed implantation therapy. Methods The puncture methods used at authors’ interventional department in performing 125I seed implantation therapy for retroperitoneal lymph node metastases were summarized. Results The commonly used puncture methods included parallel needle puncturing technique , trans-viscera puncturing technique , broadening path puncturing technique and coaxial needle puncturing technique. Conclusion An effective combination use of various puncturing techniques to uniformly implant the radioactive 125I seeds into the lesion can improve the therapeutic result and reduce the occurrence of complications.