Population dynamics and control techniques of aphids on honeysuckle / 中国中药杂志

The objective of this study is to define the population dynamics of Semiaphis heraclei in the main-producing district of Lonicera japonica in Shandong, and screen for highly efficient, safety control technique. Through fixed field investigation, we tested the toxicity of eight kinds of insecticides by using dipping methods, and carried out the field experiment. The results showed that the aphids' emergence peak appeared in May. The aphids on the Sijihua variety of L. japonica was more susceptible and the peak was also seven days earlier than Damao variety of L. japonica. The aphid populations on Sijihua were 1 fold than those on the Daomao in happened peak. Comparing the eight kinds of insecticides, the LC50 of lambda-cyhaothrin, abamectin, imidacloprid and pyrethrin to wingless aphids were 1.494, 1.690, 2.840, 2.861 mg x L(-1), respectively, whose toxicity were higher, the toxicity of matrine, pymetrozine and azadirachtin were also high. The field efficacy trials indicated that during the period of aphids occurred, 25% imidacloprid wettable powder, 1.8% abamectin missible oil, 2.5% lambda-cyhaothrin missible oil, 25% pymetrozine wettable powder, 5% pyrethrin missible oil, 1% matrine water aqua were sprayed at concentrations of 20,000, 2,000, 2,500, 5,000, 500 and 50 times, respectively,the control effect achieved 91.69%, 98.90%, 96.18%, 95.06%, 99.24%, 90.10%, respectively, after 5 days. During the growing period of L. japonica in spring, application of thiamethoxam, thiacloprid, pymetrozine and imidacloprid, all of the control effect against aphids achieved above 98.88% after 50 days. The result indicated that May was the S. heraclei Takahashi's emergence peak in Pingyi, Shandong. The efficient safety and environmentally friendly insecticides by spraying and systemic insecticide of pymetrozine and imidacloprid by root application were all efficient controlled aphids. These insecticides were long for controlling S. heraclei Takahashi and worthy of being widely applied.

Visual evoked potentials in adults with migrainous vertigo / 中国医学科学院学报

<p><b>OBJECTIVE</b>To investigate the visual evoked potentials in adults with migrainous vertigo (MV).</p><p><b>METHODS</b>Totally 113 patients with MV were enrolled from vertigo clinic. Patients received necessary laboratory examinations as well as pattern visual evoked potential (PVEP) testing.</p><p><b>RESULTS</b>Definite MV accounted for 46.9% (53/113) and probable MV accounted for 53.1% (60/113). Among 74 patients who received PVEP, the results were normal in 35 patients (47.3%) and abnormal in 39 patients (52.7%). The abnormal manifestations included lowered N75-P100 amplitude, elongated latency of P100, and lowered N75-P100 amplitude combined with delayed latency of P100. Seven patients with MV had unilateral lowered N75-P100 amplitude and 4 had bilateral abnormal amplitude. Nine patients had unilateral delayed latency of P100 and 11 had bilateral abnormal latency. Four patients had unilateral and 4 had bilateral abnormal N75-P100 amplitude and latency of P100.</p><p><b>CONCLUSIONS</b>MV patients usually have abnormal PVEP. PVEP may become a useful electrophysiological test in the diagnosis of MV.</p>

Application of Adjustable Interatrial Fistulization in Operation of Congenital Heart Disease Accompany with Severe Pulmonary Arterial Hypertension / 实用儿科临床杂志

Objective To investigate the method and value of adjustable interatrial fistulization in the operation of congenital heart disease(CHD) accompany with severe pulmonary arterial hypertension(PH).Methods Twenty-seven patients(19 male,8 females) accompany with severe PH were entered the study,age ranged from 4 to 14 years old,weight from 13.7 to 42.0 kilogram.The enrolled diseases included 11 cases of atrial septal defect(ASD),10 cases of ventricular septal defect(VSD),4 cases of patent ductus arteriosus(PDA),and 2 cases of Ebstein syndrome accompany with severe tricuspid insufficiency.All patients were diagnosed as CHD accompany with severe PH(bidirectional shunt)which was the contraindications for routine operation before operation through chest X-ray,electrocardiography,ultrasonic cardiography,cardiac catheteri-zation and cardiac angiography.Results With adjustable interatrial fistulization and treatment to the abnormalities,14 fistulaes were closed immediately after operation,7 fistulaes were closed 2 days after operation,3 fistulaes were closed 3 days and 1 fistulae was closed 4 days after operation and accompanied with empyema discharged initiatively.One fistula was never closed,1 case died from low cardiac output symptom.The effective rate was 92.6%,closed to that of routine operations.Conclusion Adjustable interatrial fistulization is an easy procedure,and it can decrease the danger of PH post-operation effectively and provide operation opportunity for those patients with CHD approaching terminal stage.