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[en] Full text: Background: The effect of the Dietary Approaches to Stop Hypertension (DASH diet) in child overweight/obesity control is unknown. Objective: To study the association between the DASH diet and the risk of overweight/obesity, and to explore the potential correlates of DASH Diet pattern in Chinese schoolchildren. Methods A cross-sectional study was carried out in 6-18-year schoolchildren (n=3868, 51.5% was boys, average age: 13.0±2.4 years old) recruited by the convenient clustered sampling in 21 suburb or urban schools in three areas of China (the eastern, central, and western China) in 2012. A self filling structured Food Frequency Questionnaire (FFQ) was used to collect the frequencies and portion size of DASH Diet components (fruits, vegetables, meat, high fiber grains, milk, nuts, and desserts), physical activity, and leisure time screen use. The DASH Scores was revised according to literatures, with the higher DASH Score represented a healthier dietary pattern (ranged 0-7). Overweight and obesity were determined according to the Cutoff Values of Body Mass Index (BMI) for Chinese Children. Results: 36.5% of the participants were overweight or obese. The average BMI (kg/m2) was 21.0±4.3(kg/m2, and the BMI-Z score was 0.54±1.38. There was no difference in the DASH Scores between the obese and non-obese children (obese: 3.5±1.0 vs non-obese: 3.6±1.1, P=0.342). After excluding dessert‘s score, non-obese group had a higher DASH Score than overweight/obese group (2.6±0.9 vs 2.4±0.9, P<0.001). Children in the highest quartile of DASH Score has the lowest BMI-Z score (BMI-Z value in q4: 0.45±1.33 vs q1: 0.67±1.4, P<0.001). The overweight/obesity risk in the highest score group q4 was 32.9% lower than in the lowest DASH Score group q1 (OR=0.671, 95%CI: 0.533- 0.846, p=0.001), and the group q3 was 20.5% lower than q1 (OR=0.795, 95%CI:0.634, 0.997, P=0.047) (model 1). After adjusted for physical activity and sedentary behaviors on the basis of Model 1, The risk for overweight/obesity in q4 was 25.7% lower than that in q1 (OR=0.743, 95%CI: 0.583-0.947, P=0.016). Conclusions: The DASH diet pattern is negatively correlated with overweight/obesity risks in Chinese schoolchildren. (author)
[en] Objective: Malignant nerve sheath tumors arising in the thorax are rare. The authors analyzed the radiologic appearance in order to improve diagnostic accuracy. Methods: Postero-anterior radiograph was taken in ten cases. Computed tomograph both plain and enhanced study was performed in 8 cases. The diagnosis was established by surgery in eight cases, and CT guided percutaneous biopsy in 2 cases. Results: Four tumors were located in the mediastinum, 2 in the lung, 3 in the chest wall and 1 in the diaphragm. Eight patients had solitary mass, 1 multiple masses and another 1 with disseminated disease. Obvious compression of the lung and trachea was seen in 3 patients, pulmonary infiltration in 1 patient and compression of ribs in 3 patients, 2 with bone destruction. Pleural effusion was evident in 4 patients. Six patients (7 lesions) allowed CT-pathologic correlation. Of them 3 had relatively smooth margin (complete capsule could be seen in pathology), 4 were irregular. Two lesions had network-intensities (cystic spaces of varying sizes within solid mass), 4 lesions had heterogeneous enhancement (related to hemorrhagic and necrotic areas in pathology), 1 lesion had homo-generous fluid density (corresponding to cystic changes). Conclusion: It is difficult to distinguish thoracic malignant nerve sheath tumor from the benign one. Low-density areas could not represent malignant nerve sheath tumors. Irregular tumor margin is suggestive of malignancy. Invasion of adjacent structures is important feature of malignancy
[en] The Su-Schrieffer-Heeger model has been extended and solved numerically to study the electronic structures of seven C80 fullerene isomers. Then we analyze the electronic properties of the seven isomers and discuss the difference among their electronic structure. It is found that phonons considered in the SSH model induce different results from recent theoretical studies. We compare our results with those obtained with other methods and discuss the difference. (orig.)
[en] Highlights: • Proposed high efficient Mo (VI) removal with Fe_2(SO_4)_3 coagulation-filtration. • Studied different effects of Fe_2(SO_4)_3 and FeCl_3 due to different anionic portions. • Reported the adverse effect of calcium on the removal of Mo (VI). • Proposed factors affecting Mo (VI) removal: intercepted Fe and adsorption affinity. - Abstract: Comparatively investigated the different effects of Fe_2(SO_4)_3 coagulation-filtration and FeCl_3 coagulation-filtration on the removal of Mo (VI). And the influence of calcium, sulfate, silicate, phosphate and humic acid (HA) were also studied. The following conclusions can be obtained: (1) compared with the case of FeCl_3, Fe_2(SO_4)_3 showed a higher Mo (VI) removal efficiency at pH 4.00–5.00, but an equal removal efficiency at pH 6.00–9.00. (2) The optimum Mo (VI) removal by Fe_2(SO_4)_3 was achieved at pH 5.00–6.00; (3) The presence of calcium can reduce the removal of Mo (VI) over the entire pH range in the present study; (4) The effect of co-existing background anions (including HA) was dominated by three factors: Firstly the influence of co-existing background anions on the content of Fe intercepted from water (intercepted Fe). Secondly the competition of co-existing anions with Mo (VI) for adsorption sites. Thirdly the influence of co-existing background anions on the Zeta potential of the iron flocs.
[en] B037 is of interest because it is both the most luminous and the most highly reddened cluster known in M31. Deep observations and high spatial resolution images with the Advanced Camera for Surveys on the Hubble Space Telescope (HST) first showed that this cluster is crossed by a dust lane. Photometric data in the F606W and F814W filters obtained in this paper indicate that colors of (F606W - F814W) in the dust lane are redder ∼ 0.4 mag than ones in the other regions of B037. The HST images show that this dust lane seems to be contained in B037, instead of in the M31 disk or the Milky Way. As far as we know, the formation of dust requires gas with a rather high metallicity. However, B037 has a low metallicity of [Fe/H] = -1.07 ± 0.20. So, it seems improbable that the observed dust lane is physically associated with B037. It is clear that the origin of this dust lane is worthy of future study. In addition, based on these images, we present the precise variation of ellipticity and position angle, and of surface brightness profile, and determine the structural parameters of B037 by fitting a single-mass isotropic King model. In the F606W filter, we derive the best-fitting scale radius r0 = 0.56 ± 0.02 (= 2.16 ± 0.08 pc), a tidal radius rt = 8.6 ± 0.4 (= 33.1 ± 1.5 pc), and a concentration index c = log(rt/r0) = 1.19±0.02. In the F814W filter, we derive r0 = 0.56 ± 0.01 (= 2.16 ± 0.04 pc), rt = 8.9 ± 0.3 (= 34.3 ± 1.2 pc), and c = log(rt/r0) = 1.20 ± 0.01. The extinction-corrected central surface brightness is μ0 = 13.53 ± 0.03 mag arcsec-2 in the F606W filter, and 12.85 ± 0.03 mag arcsec-2 in the F814W filter. We also calculate the half-light radius at rh = 1.05 ± 0.03 (= 4.04 ± 0.12 pc) in the F606W filter and rh = 1.07 ± 0.01 (= 4.12 ± 0.04 pc) in the F814W filter. In addition, we derived the complete magnitudes of B037 in the V and I bands by transforming the magnitudes from the ACS system to the standard system, which are in good agreement with previous ground-based broadband photometry studies.
[en] Objective: To investigate the CT features of pulmonary sarcoidosis. Methods: Ninety patients with histologically proved pulmonary sareoidosis were retrospectively studied by using CT scans and clinical recording. Results: The main CT findings of pulmonary sarcoidosis were nodules which were seen in 69 cases (76.7%), and the nodules mostly distributed around the bronchovascular bundle (n=37, 41.1%). Other abnormalities included consolidation (n=31, 34.4%), ground-grass (n=39, 43.3%), thickening of bronchovascular bundle (n=30, 33.3%), interlobular septal lines (n=58, 64.4%), fibrosis (n=17, 18.9%) including bronchial distortion (n=8, 8.9%), linear shadow (n=5, 5.6%), and honeycombing shadow (n=4, 4.4%), air-trapping (n=3, 3.3%), bronchial straitness (n=8, 8.9%), pleural thickening (n=42, 46.7%), and hilar and mediastinal adenopathy (n=76, 84.4%). Two or more abnormal findings co-existed in 83 cases. The pulmonary lesions co-existed with hilar and mediastinal adenopathy in 76 cases. The nodules (n=25), consolidation (n=9), ground-grass (n=11), thickening of bronchovascular bundle (n=10) were improved after therapy. Ten cases of the interlobular septal (10/22), 0 of bronchial distortion (0/4), 1 case of diffuse linear (1/3), and 0 ease of honeycombing (0/2) were improved. Conclusion: CT manifestations of pulmonary sarcoidosis are varied, but has some specific radiographic features. A correct diagnosis can be made. combined with hilar and mediastinal adenopathy. (authors)
[en] We present the first photometric results in J, H and Ks from 2MASS (Two Micron All Sky Survey) imaging of 10 classical globular clusters (GCs) in the far outer regions of M31. Combined with the V and I photometric data from previous literature, we constructed a color—color diagram between J — Ks and V — I. By comparing the integrated photometric measurements with evolutionary models, we estimate the ages of these clusters. The results showed that all of these clusters are older than 3 × 109 yr, and among them four are older than 10 Gyr and the other six have intermediate ages between 3–8 Gyr. The masses for these outer-halo GCs are from 7.0 × 104 Mo-dot to 1.02 × 106 Mo-dot. We argued that GC2 and GC3, whose ages, metallicities and distance moduli are almost the same, were accreted from the same satellite galaxy, if they did not form in situ. The statistical results show that the ages and metallicities of these 10 M31 outer-halo GCs do not vary with projected radial position, and a relationship between age and metallicity does not exist.
[en] The distribution of cholinergic M1-R mRNA and M-R in brain tissue was studied by means of receptor radioligand binding assay, in situ hybridization and autoradiograph, to observe the effect of kidney-tonifying TCM on the content, function and distribution of M-R, then discussing the anti-aging mechanism of kidney-tonifying TCM. The results were: (1) the content of M-R in brain cortex, hippocampus and striatum of aging rats was decreased, and the kidney-tonifying TCM can increase the amount of M-R in aging rats; (2) the express of the M1-R mRNA was significantly decreased in the striatum of aging rats, in the other region of the brain the change is not obvious. The kidney-tonifying TCM can improve the transcription of M1-R mRNA. It's suggested that the kidney-tonifying TCM can delay the brain senescence by improving the express of M1-R mRNA, increasing the amount of muscarinic receptor in aging rats. Thus authors' study offered an experimental basis for kidney-tonifying TCM preventing and treating aging
[en] Objective: To compare the accuracy of measurements between computed tomographic (CT) axial images and three-dimensional reconstructed images (3D) in evaluation of aortic dissection of aortic aneurysm before endovascular aortic repair. Methods: Aortic axial images were got from thin-slices scanning in 20 patients with aortic dissection and 12 patients with abdominal aortic aneurysm. Multi-planar reconstruction and maximal intensity projection were used for 3D images. Parameters related to aortic dissection and aneurysm were measured from CT axial and 3D images and compared with those from aortography. Results: Diameters of arch, lengths of neck and aneurysm were smaller measured on CT axial images than those by 3D and aortographic images. The proximal aortic diameters of dissection or aneurysm, middle aortic diameter and diameters of bilateral iliac arteries were greater measured by CT axial images than by those of 3D images and aortography. There were no remarkable differences between the measurements from 3D images and aortographies. The breakage of dissection can be easily demonstrated by 3D images and aortographies but not by CT axial images. However, CT axial and 3D images revealed more accuracy than aortographice in detecting thrombi and measuring the maximal diameters of aneurysm. Endovascular grafts were chosen according to measurements by CT 3D images and outcoming with successful closure of all the dissections and aneurysms. Conclusions: Combined CT axial and 3D images can provide accurate evaluation of aortic dissection and aneurysm before endovascular aortic repair, especialy CT 3D images was strongly recommended to determine size of endovascular grafts. (authors)
[en] Objective: To precisely localize the dilated intrahepatic bile duct, design correct puncture route and enhance the success rate in percutaneous transhepatic cholangiography (PTC). Methods: Seventy-three patients with malignant obstructive jaundice underwent percutaneous transhepatic cholangiography, of which 30 cases were assigned in the experimental group with percutaneous transhepatic biliary target positioning puncture method, and the other 43 cases were of the traditional method as the control group. Experimental group: The targeted biliary duct was selected on the CT or MRI image as the most obvious intrahepatic dilated biliary duct level; with appropriated external diameter and acute angulation to the puncture needle route. The puncture site was at the middle of the targeted duct and then followed by measuring the distance between the puncture point to the dorsal surface as value h. designated for the reference of puncture level. Separately measuring the distances (on the saggital image) from the two terminals of the targeted duct to the abdominal median line as values a and b. (a-b) for the reference value of the targeted duct surface projection area. The puncture point was selected at the intersection of value h level and the upper rib border of the 2nd intercostal space below sight costophrenic angle and then the puncture needle was puched into the targeted duct surface projection area horizontally. Control group: The puncture point was selected at the upper border of rib located approximately two intercostals spaces below the right median axillary line of costophrenic angle (commonly at the middle part of liver within 8th-10th intercostals space). The direction of puncture needle was passed through horizontally between T10 and T12 into the tissue 2-6 cm, adjacent to the sight vertebral body. Results: The number of puncture was 1-4 (average 2.07) for each individual with totally 62 times and successful rate 48.4% for experimental group and those for the control group were 1-9 (average 4.33), 186 times and 23.12%, respectively; showing significant differences (χ2= 14.294, P<0.01). Conclusion: Percutaneous transhepatic cholangiography with localization puncture for targeted biliary duct provides the promotion of successful puncture rate decrease hepatic damage etc. with complications and an efficacy was of PTC. (authors)