Aldehydes ; chemistry ; pharmacology ; Chromatography, High Pressure Liquid ; DNA Adducts

0.05) re spectively.Conclusion:E-Q system is rapid, simple and effective in root canal therapy.

Objective To investigate the expression of serum tumor markers in pancreatic carcinoma and to assess the value of serum tumor markers in the diagnosis and prognosis of pancreatic carcinoma. Methods Five serum tumor markers including AFP, CEA, CA199, CA125 and CA242 were detected in 95 patients with pancreatic carcinoma by chemi-luminescence immunoassay (CLI) and enzyme linked immunosorbent assay (ELISA), 80 patients with other malignant tumor and 65 patients with benign disease served as controls. Five tumor markers in pancreatic carcinoma diagnosis for TNM staging were compared. The value of tumor markers for prognosis was analyzed. Results Among these 5 kinds of tumor marker, CA199, CAI25, CA242 were valuable in diagnosis of pancreatic carcinoma, and CA199 was the most valuable one, whose sensitivity and specificity were 76.2 % and 74.8 % respectively. CA199, CA125, CA242 were increased with progression of pancreatic carcinoma. Conclusion Serum CA199, CA125 and CA242 are the preferred tumor markers to be used in the diagnosis and prognosis of pancreatic carcinoma.

Air Pollutants, Occupational ; analysis ; Chromatography, Gas ; methods ; Methyl Ethers ; analysis ; Workplace

Objective To discuss the clinical significance of the diffuse calcified distribution in diagnosis of benign and malignant breast lesions .Methods 379 patients with different benign and malignant breast lesions confirmed by surgery underwent digital X‐ray mammography .The morphology ,distribution ,number ,diameter ,concentration and density of calcification in lesions ,the maximum range of the calcified area and other accompanied manifestations in benign and malignant breast lesions were analyzed .Results As for the morphology of calcification ,tiny polymorphic calcification was found in 58 .5% of malignant lesions ,meanwhile ,dot‐like one was found in 49 .3% of benign lesions .Fine linear calcification or branched linear one occurred in malignant lesions ,however ,round one occurred in benign lesions .As for the calcification distribution ,regional distribution was found in 43 .9% of malignant lesions , meanwhile the clustered distribution was found in 58 .4% of benign lesions .And all lobar or segmental distribution was seen in malig‐nant lesions .As for the calcification diameter ,the calcification with the diameter less than 0 .5 mm occurred in 71 .6% of malignant lesions ,however ,that with diameter more than 1 .0 cm occurred in 69 .3% of benign lesions .As for the concentration of calcification , lesions with calcification more than 25 were 71 .8% of malignant ones ,whereas those with calcification of 15-25 were 58 .4% of be‐nign ones .As for calcified density ,uneven calcification occurred in 94 .2% of malignant lesions ;however the even one occurred in 63 .4% of benign lesions .The maximum diameter of calcification ranged from 40 mm to 80 mm was found in 59 .0% of malignant lesions , whereas that ranged from 0 mm to 40 mm was in 77 .2% of benign lesions .Conclusion Statistical differences have been found in the morphology ,distribution ,diameter ,concentration ,density and maximum diameter of calcification between the breast benign and ma‐lignant lesions .

This paper introuduces two ways of WEIDA LMW-1000 Magnetic Resonance Imaging System's communication with Windows 98 computer. It has a practical value to the improvement of the system's operation interface.
Automatic Data Processing ; Computer Communication Networks ; Magnetic Resonance Imaging ; instrumentation ; Software

Objective To evaluate the computed tomography (CT) characteristics of cardiovascular involvement in Beheet syndrome. Methods Eleven patients with clinically diagnosed Behcet syndrome were studied retrospectively from July 1995 to December 2007. Electron beam CT or 64-slice helical CT scanner was used and CT characteristics were reviewed. Results Eleven patients were diagnosed according to the criteria reported by the international study group for Behcet syndrome. Of them, 4 patients presented with aortic valve prolapse (2 patients with mitral valve prolapse), false aneurysm of right coronary artery was demonstrated in 2 patients, false aneurysm of left subclavian artery, aortic aneurysm and penetrating ulcers, aortic arch false aneurysm, aortic dissection, pulmonary embolism and interatrial scptum aneurysm in 1 case, respectively. Conclusion CT is a very useful method for the diagnosis and foUow-up of Behcet syndrome.

Adult ; Coke ; adverse effects ; DNA Damage ; drug effects ; Female ; Humans ; Male ; Monitoring, Physiologic ; Occupational Exposure ; adverse effects

Hand-Arm Vibration Syndrome ; Humans

Toxic effects of L7 lyophilized powder of extracellular active components (L7-LPEAC), extracted from the Algae-lysing bacteria L7, on Chlorella pyrenoidosa were studied according to the changes of effective photosynthesis rate (EPR), the protein content, the chlorophyll a content and the MDA content of algae. The results showed that the growth of alga was promoted at low concentrations of L7-LPEAC (0.80 g/L, 1.25 g/L). The 96 h-EC50 and 120 h-EC50 upon Chlorella pyrenoidosa are 5.75 g/L and 2.55 g/L, respec tively. The chlorophyll a content increased firstly and then decreased at high concentrations of L7-LPEAC (≥2 g/L), so did the protein content. Compared with the control group, there is a significant statistics diff erence (P