Vitamin B1, Vitamin B2, Vitamin C of 3 kinds of pollen from Yunnan were studied by fluorescence spectrophotometer．The sample we re Pinusthunbergii, Fagopyrum esculentum and Brassica compestris． The results s howed that the content of Vitamin B1, Vitamin B2, of pollen were rich． Th e content of Vitaimin Bl of Fagopyrum esculentum was the highest(0.39?mg/l00 g), and the Vitamin　B2, of Brassica compestris was the richest(0.70?mg/l00 ?g)． It was worth to utilize．

Objective To study the best parameters of low dose MSCT in examining the pharyngeal disease.Methods 20 volunteers were scanned by MSCT using 10 mm collimation,10 mm interval,120 kV,200 mA,100 mA,50 mA,25 mA parameters,respectively.All of the data was reformed(collimation 2.5 mm,interval 1.3 mm) on ADW 4.0 workstation.The image quality in different dose were scored respectively by 4 experienced radiolagists. Results The best appropriate parameter was 10 mm collimation,10 mm interval,120 kV,50 mA.Conclusion In examining the pharyngeal disease,the application of low dose(120 kV,50 mA) scan mode not only can assure the image quality but can decrease the exposure to patients.

Objective To perform Low dose dynamic MSCT( multi-slice CT) in sleeping obstructive sleep apnea syndrome ( OSAS) patients correcting the imprecise measure values in waking state, and to exactly analyse the location and extension of the dynamic changes about the condition. Methods Sixteen OSAS patients were scanned both in waking and naturally sleeping period ( end phase of inspiration and expiration). Measured at the narrowest part of the retropalatal ( RP) and retroglossal ( RG) and 5 mm under the tip of epiglottis at the epiglottal ( EPG) at the end period of inspiration in sleeping, respectively, and compared the accurate pos(?)on of the narrowest or occlusive level in 3 phases. All patients were also scanned using cine mode at the narrowest level at the end period of inspiration in sleeping to show the pharyngeal cavity changes during sleep. Results The smallest XSA of RP region (Mw = 47. 50 mm2 ,Me =73. 00 mm2 , Mi =2. 00 mm2 ;Zwe =2. 897,Pwe =0. 003 ;Zwi =4. 192,Pwi

Objective To explore resting state network in patients with hepatic cirrhosis using functional magnetic resonance imaging(fMRI).Methods 14 patients with hepatic cirrhosis and 14 healthy volunteers were included in this study.Modified Stroop task in Chinese character was used as target stimulus,block-design fMRI was used to acquire resource data.Group analysis(control epoch minus task epoch) was performed for both tasks in both groups.Results Comparing with controls,the patients with hepatic cirrhosis had abnormal deactivation mode.The absence of posterior cingulate cortex(PCC) and precuneus was present when performing incongruous word-reading task,deactivation of PCC,precuneus,and ventral medial prefrontal cortex were increased when performing incongruous color-naming task.Conclusion Cirrhosis patients have abnormal deactivation mode,the absence of PCC and precuneus is a sensitive not specific biomarker in detecting the brain changes of the patients with hepatic cirrhosis.

Objective To determine the volume reduction of the primary olfactory cortex (POC) in patients with Alzheimer disease (AD) and investigate the potential relationship of functional olfactory activation and anatomical atrophy changes. Methods Twelve patients with AD, eight patients with mild cognitive impairment (MCI) and twenty normal controls (NC) underwent standardized UPSIT (University of Pennsylvania smell identification test) behavior smell test and neuropsychological tests. Then all of the subjects underwent the high resolution MRI and an olfactory fMRI scan on a 3T system. Volumetric measurement of the POC was conducted and the areas were also saved as a ROI which would be used during the processing of fMRI data to get the activation voxels in local region. The Kruskal-Wallis rank test was used to examine the significance of POC volume and activation in three groups, If P-value was less than 0.05,Bonferroni method was used for multiple comparisons. The correlation between the anatomical volume and functional activation was analyzed with partial correlation adjusted for age. Results The POC volume of NC, MCI and AD groups were 3024--4734, 1409--4553 and 1561--3759 mm~3, and the medians were 3749, 2752 and 2156 mm~3. The activation voxels of each group were 0--2360, 0--2160 and 0--100 mm~3, while the medians were 430, 40 and 0 mm~3. There were significant differences of both POC volume atrophy and activation between the three groups, with a trend of reduction from NC to MCI to AD group (H is 14.942 and 16.587, both P<0.05). The volume of olfactory activation at POC was highly correlated with the volume of POC (r=0.364, P=0.023). Conclusions In this study, we explored the morphological and functional changes in the POC. It is revealed that POC suffers prominent local atrophy and dysfunction as well as hippocampus in AD. These results can provide neuropathological and neurofunctional bases for olfactory deficit in Alzheimer Disease.

Objective To study the application of SLINKY technique in MRA of head and neck by comparison of four TOF MRA methods. Methods We obtained images on 21 patients and 5 volunteers with SLINKY on all the 26 cases, MOTSA on 18 cases, single volume on 16 cases, and 2D on 12 cases. Three experienced radiologists evaluated the images, unknowing which method the images were. The evaluations included clearness of vessel branches, smoothness of vascular wall, and vascular continuity. Signal-to-noise (SNR), contrast-to-noise (C/Ns), and scan time were measured. Results SLINKY displayed vessel branches better and had better smoothness of vascular wall and vascular continuity than the other three methods(P

Objective To investigate the serum levels and dietary intakes of copper, iron, and zinc among adult residents in Dahongshan copper mine area of Yunnan Province in China. Methods Serum levels of copper, iron, and zinc were measured by atomic absorption spectrometry among 180 subjects collected randomly from Dahongshan mine area, among which 171 samples were valid. Dietary intakes of copper, iron, and zinc of 60adults collected randomly from these 180 subjects were detected by chemical analysis. Results Serum levels of copper, iron, and zinc concentrations of 171 valid samples were (0.90±0.18), (1.25±0.93) , and (0.75±0. 28) mg/L, respectively. Serum copper was negatively correlated with serum iron (r = - 0. 26, P ＜ 0. 001). Serum copper was positively correlated with age (r = 0. 25, P ＜ 0. 001). Females had significantly higher serum copper than males (P=0.011). The dietary intakes of copper, iron, and zinc among these 60 subjects were (1.74±1.09),(16.29±10.73), and (7.56±3.38) mg/d, respectively, in which females had significantly lower dietary intakes than nales (all P ＜ 0. 05). Significant regional differences were observed both in serum levels and dietary intakes of copper, iron, and zinc. Conclusions The average serum levels of copper and iron are normal among adult residents in Dahongshan copper mine area, while the average serum zinc level is low. Dietary intakes of these three minerals do not exceed tolerable upper intake levels, and are low in some subjects.

Objective To analyze the present situation of intelligence of boarding school-age children of the Va nationality.Methods Multi-stage random sampling method was used to select 650 boarding school-age children from 10 primary schools in ShuangJiang county, and their level of intelligence was estimated by Raven's STANDARD progressive Matrices (SPM) .Results The level of intelligence of boarding school-age children of the Va nationality was significantly lower than the norm ( <0.05), the prevalence of Mental Deficiency was 19.9%, and it didn't show significant differences in different age and gender ( >0.05) .Conclusions The present situation of intelligence of boarding school-age children of the Va nationality is serious and should be improved as quickly as possible.