Objective To develop a quick, simple and sensitive method for determination of sulfuric acid mist in the air by ion chromatography. Methods The samples were collected by Nillipore filter, Na2CO3-NaHCO3 solution was used and the samples were analyzed by using ion-chromatography as well as external standard curve. Results The linear range of the method was 0.5-10.0 ?g/ml and the correlation coefficient was 0.999 8. The RSD for the test accuracy and variation of repeat tests within one day or between the different days was

Acupuncture Points ; Administration, Cutaneous ; Adolescent ; Adult ; Bloodletting ; Drugs, Chinese Herbal ; administration & dosage ; Ear ; blood supply ; Female ; Hordeolum ; drug therapy ; therapy ; Humans ; Male ; Young Adult

AIM: To investigate the clinical effect of vitamin B12 eye drops for vision fatigue caused by visual display terminals (VDT).
METHODS: Totally 50 patients (100 eyes) with vision fatigue caused by VDT were averagely divided into two groups. The control group were treated with normal saline,the treatment group were treated with vitamin B12 eye drops, 3 times per day, one drop each time, continuous for 60d. Accommodative parameters and Schirmer Ⅰtest were measured and analyzed before and after treatment.
RESULTS: After treatment, the results of Schirmer Ⅰtest, accommodative amplitude and accommodative facility of the treatment group were higher than those of the control group ( all P < 0. 05 ). And the results of accommodation lag of the treatment group were lower than those of the control group (P<0. 05).
CONCLUSION: Vitamin B12 eye drops can lessen symptoms of dry eye, improve accommodative function and treat vision fatigue caused by VDT.

Molecules can enter the nucleus by passive diffusion or active transport mechanisms, depending on their size. Small molecules up to size of 50-60 kDa or less than 10 nm in diameter can diffuse passively through the nuclear pore complex (NPC), while most proteins are transported by energy driven transport mechanisms. Active transport of viral proteins is mediated by nuclear localization signals (NLS), which were first identified in Simian Virus 40 large T antigen and had subsequently been identified in a large number of viral proteins. Usually they contain short stretches of lysine or arginine residues. These signals are recognized by the importin super-family (importin α and β) proteins that mediate the transport across the nuclear envelope through Ran-GTP. In contrast, only one class of the leucine-rich nuclear export signal (NES) on viral proteins is known at present. Chromosome region maintenance 1 (CRM1) protein mediates nuclear export of hundreds of viral proteins through the recognition of the leucine-rich NES.

Objective To investigate the preventive effect of intrarectal application of indomethacin on hyperamylasemia and acute pancreatitis after endoscopic retrograde cholangiopancreatography ( ERCP ) .Methods 180 patients who underwent ERCP were randomly divided into the indomethacin group, somatostatin group and control group.The serum amylase levels were measured before ERCP, 3 and 24 hours after the drug application.The incidences of post-ERCP hyperamylasemia and pancreatitis were observed.Results Serum amylase levels before and 3h after ERCP of three groups had no differences.The serm amylase levels of control group 24 h after ERCP (228.50 ±121.72) U/L was significantly higher than that of indomethacin group (94.09 ±68.45) U/L (P <0.01) and somatostatin group (76.53 ±74.47) U/L (P <0.05), while there was no difference between indomethacin group and somatostatin group.Compared with before ERCP, the serum amylase levels significantly increased in both control group 3 and 24h after ERCP (P <0.01), as well as in both indomethacin group and somatostatin group 3h after ERCP (P <0.05), but there were no apparent differences between pre-ERCP and 24 h after ERCP in both indomethacin group and somatostatin group.The incidences of post-ERCP hyperamylasemia in both indomethacin group and somatostatin group ( 10.00%, 11.67%) respectively was much lower than that in control groups (35.00%, P<0.01).The incidence of post-ERCP pancreatitis in indomethacin group (3.33%) was also lower than that in control group (15.00%, P<0.05), whlie there was no difference between indomethacin group and somatostatin group (5.00%).Conclusion The intrarectal application of indomethacin can effectively prevent acute pancreatitis after ERCP, which has the same effect as intravenous application of somatostatin.It is also convenient, economic and safe.

Objective To explore the incidence and clinical treatment of related complications caused by implantable venous access port(IVAP) in patients with breast cancer during chemotherapy.Methods The data of 755 patients with breast cancer recieved chemotherapy by which caused some related complications in our hospital from January 2014 to March 2016 were retrospectively analyzed.Results 753 patients IVAPs were implanted succussfully.The total placement time of implantable venous access port was from 110 days to 940 days,with median placement 147.33 days.The related complications of IVAP were catheter malposition(0.79％,6/755),catheter-related thrombosis(27.81％,210/755),catheter fracture(0.13％,1/755),port exposure(0.93％,7/755) and IVAP-related bloodstream infection(0.13％,1/755).The IVAP-related complications and thrombosis rate were significant higher when IVAPs implanted in the left internal jugular veincompared with that in right internal jugular vein(34.88％ vs.25.74％,33.10％ vs.24.68％).Conclusion Application of IVAP in patients with breast cancer during chemotherapy is a safe and effective operation.The most common complication is asymptomatic mural thrombus formation around the catheter,which should be paid attention to.

Breast Neoplasms ; chemistry ; pathology ; Carcinoma, Ductal, Breast ; chemistry ; pathology ; Electrophoresis, Polyacrylamide Gel ; methods ; Female ; Fluorescent Dyes ; Gelatin ; metabolism ; Humans ; Matrix Metalloproteinase 2 ; analysis

Crohn Disease ; pathology ; Humans ; Infant ; Male

Objective To investigate the distribution of fluoride content in fresh chili in southwestern China and provide the fluoride background content for the confirming fluoride contamination discrimination value for fresh chili.Methods The method of analyzing fluoride in food as stipulated in GB/T 5009.18-2003 was adopted to determinate fluoride content in chilies.175 fresh chili samples were collected from 76 counties in southwestern China.Based on the origin and types of the chilies,we systemically analyzed the fluoride content in fresh chilies.Results In fresh chilies directly sampled from farms,the averaging content was up to 8.9 mg/kg(dry weight)and the fluoride content in more than 95.54% of fresh chili samples was less than 24.7 mg/kg(dry weight).Conclusions The current fluoride content standard for vegetables as stipulated in GB 2762-2005(≤1.0 mg/kg)is unsuitable for chili,therefore it is essential to draw a new value for discriminating fluoride contamination in fresh chili.

Objective To determine the fluoride contents in dried chilies in Southwest China to provide the basis for the prevention of the fluoride contamination in chili.Methods The dried chili samples collected from the markets and farmers in 76 counties of 9 regions in Southwest China.Their dehydration methods and storage time were investigated.These dried chilies were classified by Bailey'Criteria.The total fhorine content in chili were determined with ion wlective electrodes,fluoride forms with acid-soluble ultrasonic and water-soluble ultrasonic methods,Based on the differences of chili variety,edible part,dehydration method,storage time and fluoride form, a systemic statistics of the fluoride content in dried chili Was established.Results Theere were 296 dried chili samples collected from 76 counties of 9 regions.The geometric mean of fluoride content in dried chili was 19.6 mg/kg;The dried chili samples were classified into 4 types:cherry chili,corn chili,long chili and cluster chili; their ranges of fluoride content in cherry chili,corn chili,long chili and cluster chili Were 1.7～233.4,3.4～ 367.3,2.0～380.3,3.9～104.0 mg/kg,respectively,and the high to low sequence of fluoride content was cherry chili(25.9 mg/kg),long chili(20.3 mg/kg),corn chili(19.5 mg/kg) and cluster chili(15.3 mg/kg).The waler- soluble fluoride content in dried chili about 27.9 mg/kg occupies 77.5%(15.2/19.6)of total fluoride content and the acid-soluble fluoride content about 33.5 mg/kg reached as high as 93.0%(1 8.2/19.6).The high to low sequence of fluoride content in dried chili Was the sun-dried stored less than 1 year(10.9 mg/kg),the sun-dried stored more than 1 year(13.7 mg/kg),the fumace-dried stored less than 1 year(21.4 mg/kg),the fumace-dried stored more than 1 year(53.9 rag/ks).Conclusions The research shows that inappropriate dehydration method and storage time are the two main reasons leading to fluoride contamination in chili.