This paper introduces the operational principle and circuit blocks of rotating anode controller. The control-driven process and the design of the detection unit are analyzed.

This paper introduces the theory and the main circuit of MRI gradients high-power amplifier,especially the operation principles of its power modules and pulse-width modulators,which is helpful for maintenance of the amplifier.

The models of Cardiacglycoside-induced cardiotoxicity in guinea pigs were made by perfusing isolated heart with Langendorff appa- ratus. The free radicals generation in myocardium following the incidence of ventricular premative beat, ventricular tachycardia and ventricular fibrillation were measured respectively by the directed measurement with Electron Spin Resonance ( ESR ) techniques. The results showed the more severe toxicosis, the more much free radicals generate. Free radicals generated significantly in ventricular fibrillation and were scavenged by Superoxide dismutase ( SOD ) and sodium selenate.

Objective To explore the significance of combined detection of urinary podocalyxin (PCX), nephrin and mono-cyte chemoattractant protein-1(MCP-1) for diabetic nephropathy in newly diagnosed type 2 diabetic patients.Methods A total of 132 newly diagnosed type 2 diabetes mellitus (T2DM) patients and 36 healthy subjects were recruited .The concentrations of urinary PCX (UPCX), nephrin (UNephrin) and MCP-1(UMCP-1) were measured with enzyme-linked immunosorbent assay (ELISA), and urina-ry UAE ( UAlb) concentration was measured with turbidimetric immunoassay method .All the results were shown by dividing the urine creatinine ( UCR) concentration in the same sample .The comparisons among UAlb/UCR, UPCX/UCR, UNephrin/UCR, and UMCP-1/UCR among groups were investigated .The correlation among UAlb/UCR, UPCX/UCR, UNephrin/UCR and UMCP-1/UCR was in-vestigated in T2DM patients.The comparison among positive rate of UMCP-1/UCR, UNephrin/UCR, UPCX/UCR and UAlb/UCR was investigated in T2DM patients.Results The levels of UPCX/UCR and UMCP-1/UCR were significantly higher in diabetes melli-tus(DM) group (37.37 ±22.83 and 47.19 ±29.98, respectively) than in healthy subjects (9.59 ±2.28 and 9.98 ±3.63, respec-tively) ( P <0.05 ) .The levels of UAlb/UCR、UPCX/UCR and UMCP-1/UCR were significantly higher in diabetic nephropathy (DN) group (90.39 ±59.35, 72.11 ±58.88, and 104.82 ±82.77, respectively) than in DM group (17.50 ±9.49, 37.37 ± 22.83 , and 47.19 ±29.98 , respectively ) and in healthy subjects ( 8.93 ±3.81 , 9.59 ±2.28 , and 9.98 ±3.63 , respectively ) ( P<0.05).The level of UNephrin/UCR was significantly higher in DN group (83.60 ±61.61) than in DM group (38.74 ±35.27) ( P <0.05).The levels of UPCX/UCR, UMCP-1/UCR, and UNephrin/UCR were positively correlated with UAlb/UCR ( r =0.619, 0.568, and 0.535, respectively) ( P <0.05) in T2DM patients.The level of UPCX/UCR was positively correlated with the levels of UMCP-1/UCR and UNephrin/UCR ( r =0.799 and 0.718 , respectively ) ( P <0.05 ) .The level of UNephrin/UCR was positively correlated with the level of UMCP-1/UCR ( r =0.635 P <0.05) in T2DM patients.The positive rate of UMCP-1/UCR, UNephrin/UCR, and UPCX/UCR was significantly higher than that of UAlb/UCR(χ2 =9.818, 6.673, and 5.395, respectively, P <0.05)in T2DM patients.Conclusions The combined detection of urinary PCX , Nephrin and MCP-1 is very important for the early renal dam-age in newly diagnosed type 2 diabetic patients .

Objectives:To explore the optimal method of spiral CT angiography and MPVR in the detection of intracranial aneurysms.　Methods:Eleven patients with clinical suspicion of intracranial aneurysms underwent spiral CT angiography, then postprocessed with MPVR.　Results:,Five anterior communicating aneurysms,1 posterior communicating aneurysm and 1 base aneurysm were found with MPVR.　Conclusions: Lesions at the circle of Willis, the main trunk of the carotid and the vertebrobasilar arteries, including their branches could be visualized perfectly with MPVR by optimizing the thickness, center, angle of rotation and window level, by which more intracranial aneurysms could be found.

Objective To analysis the clinical features of valproate (VPA)-induced encephalopathy in elderly people in order to improve our cognition toward it.Methods From March 2003 to March 2011,a total of 10 cases with VPA-induced encephalopathy were retrospectively reviewed and summarized.The data collected included clinical manifestations,biochemistry,EEG and therapeutic effects.Results In the 10 cases,8 were males and 2 females.The age ranged from 65-88 years old (mean age 75.4±10.3 years).7 subjects were on treatment with VPA alone,and the other 3 in combination with other anti-epileptic drugs.The serum VPA level in this study ranged from 62.1-122.7 μg/ml with mean of (92.3 ± 30.1) mg/L (normal range 50-100 mg/L).All subjects presented with confusion and cognitive impairment.The serum ammonia level in this study ranged from 56.7-225.1 μmol/L with mean of (101.4±55.2) μmol/L (normal range 11-32 μmol/L).All cases were with normal liver function.Electroencephalography was characterized by signs of severe encephalopathy with continuous generalized slowing,a predominance of θ and δ activity,occasional bursts of epileptiform discharges and triphasic waves.All cases were improved 3-21 days after VPA withdrawal.Conclusions VPA-induced encephalopathy that manifested in confusion and cognitive impairment is not uncommon in elderly patients and it has a good prognosis and the early withdrawal of VPA lads to improvement in almost all cases.

Semont maneuver was performed in 97 patients with benign paroxysmal positional vertigo involving the posterior semicircular canal.Among 97 patients the Semont maneuver was successful in 69 cases and failed in 28 cases.There were three nystagmus patterns during the third position of the Semont maneuver:orthotropic nystagmus (n=45), no nystagmus (n=42) and reversed nystagmus (n=10);and the effective rates in three groups were 93%, 64% and 0%, respectively (P<0.05).The duration of latency period and nystagmus status in Dix-Hallpike test has no effect on repositioning efficacy ( P>0.05) .

The humanity-oriented spirit is being reestablished and developed in medical activities,but there are still deviations clearly demonstrated in language expression and communications between doctors and patients.This paper discusses the relationship between medicine and language expression,empirically analyzes the language problems in physician-patient communication including inadequacy of information,rigidness of speech,frankness in speech,the lack of language skills,shortage of non-linguistic information,and the causes of such problems.Finally,the paper proposes that language cultivation should be improved and restressed from the perspectives of both medicine and linguistics.

Recently, it had been demonstrated that some free radical scavengers, reduced glutathion ( GSH ) , Ascorbic acid(AA), the purified aponin Rg1andRb1 of Panax notoginseng, Sodium selenate

Objective To design a post-peripheral intervention observation form that uses the timepoint and observation project as the framework of contents,and to evaluated its clinical application effect.Methods Non-concurrent patients were used to make a control study.By using the convenient sampling method,101 patients,who received peripheral interventional therapy during the period from June 1,2014 to December 31,2014,were collected and used as the control group;routine nursing care was adopted and the results were documented.A total of 102 patients,who received peripheral interventional therapy during the period from January 1,2015 to June 30,2015,were used as the intervention group,for whom routine nursing care was carried out and self-designed post-peripheral intervention observation form was employed to record the nursing observation.The results of the two groups were statistically analyzed.After using the form,every month 10 patients,5 visiting physicians and 5 responsible nurses were asked to make an evaluation of nursing quality satisfaction.Results The incidence of main postoperative complications in the intervention group was lower than that in the control group,the chi-square test showed that the difference between the two groups was statistically significant (P＜0.05).The average hospitalization days and the mean medical expense of the intervention group were lower than those of the control group,the chi-square test indicated that the difference between the two groups was statistically significant (P＜0.05).After using this form,the nursing quality satisfaction of patients and visiting physicians was improved,the self-rating satisfaction assessed by responsible nurses was also improved,the chi-square test revealed that the difference between the two groups was statistically significant (P＜0.05).Conclusion All the evaluation indexes of the patients in the intervention group are better than those of the patients in the control group,indicating that this observation form is reasonably designed,meets the specialty characteristics,heightening the dynamic observation for patients after peripheral intervention,strengthens the effectiveness of monitoring postoperative complications,and is helpful for the implementation of the observation after peripheral intervention.Therefore,this observation form is worth promoting use.