Objective To analyze the kinds of organic compounds in source water and finished water. Methods The organic pollutants in water samples collected from source water and finiched water and enriched by GDX resin, were analyzed by GC/ MS. Results 48 organic compounds including phthalates, phenols, terpanes and aromatic compounds were detected in water samples. Similar kinds of organic compounds were found in source water samples and finished water samples. The main pollutants were phthalates, phenols and cyclic compound which had a high percentages (85%-94% ). Conclusion Many kinds of organic compounds in source water still existed in the finished water.

Objective To study the effect of revised trauma score (RTS) in the rescue of patients with multiple trauma emergency application. Methods According to the admission time, 56 multiple trauma patients were assigned into the control group, and another 58 into the observation group. The control group was treated with traditional pre-hospital and hospital emergency care. The observation group with pre-hospital emergency care and hospital based on the RTS results. The two groups were compared in terms of effective treatment time and complications. Result The effective rescue time of the observation group was significantly shorter than that of the control group (P<0.001) and the complication rate was significantly lower than that of the control group (P<0.05). Conclusion Based on the integrated emergency rescue measures on the basis of RTS scores, accurate condition judgment can be made in a short time so that consistent care can be given to the patients and the success rate can be improved , and the occurrence of complications can be reduced and the rescue success rate can be increased.

Objective To study the neuropathological characteristics of late-onset Alzheimer' s disease (LOAD) in Chinese people, to ensure correct diagnosis of LOAD.Methods Choosing cerebral cortex of temporal layer of 8 cases of LOAD and 5 cases of age-matched normal control group by autopsy.Histopathologlc diagnosis was established in all these 13 cases.Cerebral cortex were taken from temporal layer in 13-101 hours after death and were fixed with 40 g/L paraformaldehyde, followed by paraffin-embedding and serial sectioning with 6 μm thickness.Brain tissue was analyzed neuropatholically by using immunohistochemical staining for β-amyloid (Aβ) and AT8 on these cases.Positive distribution of temporal layer was observed under light microscope.Results The results of immunohistochemical stainings of Aβ and AT8 were positive in all of LOAD.Aβ immunoreactant located in the cerebral cortex.The diffuse plaques, primitive plaques and burn-out plaques of senile plaques were displayed clearly by immunohistochcmical stainings of Aβ.AT8 immunoreactants showed neurofibrillary tangles, neuropil thread and senile plaques in nerve cell of cerebral cortex in different degree respectively.The positive rate Aβ and AT8 were both 8/8 by semiquantitative analysis in AD group.As the normal aging control group, which was 0 and 1/5 respectively.There was significant difference of the positive rate Aβ and AT8 in two groups(χ2 = 13.000,P=0.001; χ2=9.244,P=0.007).Conclusions Sensitive immunnhistochemical technique was significant to display senile plaques and neurofibrillary tangles.The findings demonstrate that immunohistochemistry staining of Aβ and AT8 can display senile plaques and neurofibrillary tangles clearly.The connection of the 2 different methods might improve diagnose accordance rate of AD.

ObjectiveTo assess the safety and clinical values of video-laryngoscope in spontaneous respiration tracheal intubation for emergency patients. Methods Seventy-nine patients,who needed the endotracheal intubation,were recruited in our department between January 2010 and December 2010,and were randomly ( random number) divided into two groups according to consultative sequence.Forty patients (group A ) were operated with traditional laryngoscope and thirty-nine patients (group B ) with videolaryngoscope.The operative time and success rate of tracheal intubation,Cormack-Lehane classification,as well as adverse events,were recorded.The heart rate ( HR ),mean arterial blood pressure ( MAP),respiratory rate ( RR ),and saturation of pulse oxygen ( SpO2 ) were observed pre-operation,during operation and 2 min post-operation.Results( 1 ) The Cormack-Lehane classification in group A were significantly lower than in group B. (2) The operative time of tracheal intubation in group B was significantly less than that in group A [(35.6+12.7) svs. (58.3 ± 13.5) s; P＜0.05] ; and one-time success rate of tracheal intubation in group B was higher than that in group A ( 84.6％ vs.52.5％ ; P ＜0.05).(3) Compared to group B,the HR and MAP in Group A were significantly increased at t2 and t3 ( P ＜ 0.05 ). ( 4 ) The adverse events,including restlessness,bucking and injury,were significantly decreased in group B than those in group A ( P ＜ 0.05 ).ConclusionsThe video-laryngoscope used in spontaneous respiration tracheal intubation,could improve Cormack-Lehane classification,short operative time,enhance one-time success rate and reduce adverse evevnts.

Objective To explore the dose- and time-responses of BPCBG on the decorporation of uranium and its protective effects for uranium-induced kidney injury in rats. Methods Sprague-Dawley (SD) male rats were randomly divided into 4 -7 groups:normal control group,uranium poisoning group,different doses of BPCBG groups and DTPA-CaNa3 group. Rats in chelating agents-treated groups were either injected intramuscularly with 60,120 and 600 μmol/kg of BPCBG or 120 and 600 μmol/kg of DTPA-CaNa3 immediately after intraperitoneal injection of uranyl acetate dihydrate,or injected with 120 μmol/kg of BPCBG 0.5,2 h before or 0,0.5,1 and 2 h after injection of uranium. Uranium poisoning group rats were injected with normal saline after intraperitoneal injection of uranyl acetate dihydrate,and the normal control group rats were merely injected with normal saline. The uranium content in urine,kidney and femurs were detected 24 h after chelator injections by ICP-MS method.After injecting a dose of 500 μg uranyl acetate dihydrate,rats were injected with 600 μmol/kg of BPCBG or 1200 μmol/kg of DTPA-CaNa3. Histopathological changes in the kidney and serum creatinine and urea nitrogen were examined 48 h after chelator administration.Results Prompt injections of BPCBG resulted in 37％ -61％ ( t =2.22,4.43,5.80,P ＜ 0.05 ) increase in 24 h-urinary uranium excretion,and significantly decreased the levels of uranium in kidney and bone by 59％ -69％ (t=3.33,5-59,4-53,P＜0.01) and 14％ -58％ (t =2.15,8.70,9.10,P ＜ 0.05 ) respectively in a dose-dependent manner. BPCRG injection obviously reduced the severity of the uranium-induced histological alterations in the kidney,which was in parallel with the amelioration noted in serum indicators,serum creatinine and urea nitrogen,of uranium nephrotoxicity.Advanced 0.5 h or delayed 0.5 and 1 h administrations of BPCBG were effective in 24 h-urinary uranium excretion ( advanced 0.5 h:t =4.34,delayed 0.5 h:t =3.35,P ＜ 0.05 ),decreasing accumulation of kidney uranium ( t =5.75,7.74,5.87,P ＜ 0.05 ) and accumulation of hone uranium (t =6.43,5.222,2.60,P ＜0.05),but the efficacy decreased with the interval time between uranium and BPCBG injection. Although DTPA-CaNa3 markedly reduced uranium retention in kidney (120,600 μmol/kg,t =2.28,3.35,P ＜ 0.05 ),its efficacy in uranium removal was significantly lower than that of BPCBG,and it had no protective effects against uranium-induced nephrotoxicity.Conclusions BPCBG can effectively decorporate uranium from rats and protect against uranium-induced kidney injury of rats.

Objective To investigate the influence of collective motion excitation on the anxiety/depression and the quality of life of COPD patients at stable stage? Methods Ninety-six patients with chronic obstructive pulmonary disease(COPD)at stable stage were divided into the intervention group and the control group,both treated with regular medical treatment and general nursing?Collective motion excitation was implemented in the intervention group twice per week in 12 weeks? The Hamilton Anxiety Scale (HAMA),the Hamilton Depression Scale(HAMD)and the Short Form-36 Health Survey(SF-36)were used to assess all patients before and after the 12-week nursing? Result Compared to the control group,the intervention group demonstrated significant improvements in HAMA ,HAMD and SF-36 scores at the endpoint of 12 weeks(P < 0?05),and no difference before the nursing intervention(P > 0?05)? Conclusion The anxiety/depression and the quality of life can be improved with COPD patients at stable stage through collective motion excitation?

Objective To study the dose rate distribution on cultured cell plane and establish a reference dose rate table of in vitro cell line ~(125)I seed irradiator.Methods Thermoluminescence dosimetry(TLD) was used to measure the irradiation dose rate of a single 6711 model(~(125) I) seed with apparent activity of 10.323 MBq in water at point P.Meanwhile,the theoretic value of the irradiation dose rate at point P was calculated with theoretic formula.The difference between the calculated and observed values within 10% was set as standard to analyze the accuracy of the measurement.The irradiation dose rate of a single 6711 model(~(125) I) seed was measured in 1mm-thick polystyrene + water medium at point P.The value was applied to differential or non-differential proof along with the value from water medium to study the effect of 1 mm thick polystyrene on distribution of irradiation dose in water.Finally,by simulating the(~(125) I) seed plane irradiator with nine(~(125) I) seeds,the distribution table of irradiation dose rate on the cultured cell plane was calculated with theoretical formula.Results The observed value(n= 10) of irradiation dose rate with one(~(125) I) seed in water at point P was(0.359?0.023)cGy/h and the calculated value was 0.347cGy/h,the difference was within 10%.The observed value(n=10) of irradiation dose of one(~(125) I) seed in 1mm-thick polystyrene + water medium at point P was (0.350?0.027)cGy/h,which showed no statistical difference from the observed value in water under differential and non-differential proof.The reference table on dose rate distribution for cells exposed to(~(125) I) seed irradiation in vitro was developed.Conclusions 1mm-thick polystyrene gives no significant effect on irradiation dose rate distribution from(~(125) I) seeds in water.A reference table on the dose rate distribution for cells exposed to(~(125) I) seed irradiation in vitro has been developed,which can be used to determine an optimal irradiating strategy for future work.

Objective To study the expressions of hypoxia inducible factor (HIF)-1 and angiopoietin (Ang)-2 in repeated gastrointestinal bleeding due to vascular malformation, and the efficacy of treatment with thalidomide. Methods Twenty-five patients with repeated gastrointestinal bleeding due to vascular malformation confirmed by capsule endoscopy or enteroscopy were collected and 18 subjects without severe diseases were served as controls. Ten patients with gastrointestinal vascular malformation, who received 25 mg of thalidomide 4 times daily for 4 months and were followed up for at least one year, were also enrolled. The serum samples from all participauts were detected for expressions of HIF-1 and Ang-2 using enzyme-linked immunosorbent assay (ELISA).The expressions of HIF-1 and Ang-2 were compared between angiodysplasia group and control group.The expressions of HIF-1 and Ang-2 were comparatively evaluated before and after treatment with thalidomide in treatment group. Results The expressions of HIF-1 and Ang-2 in vascular malformation group [( 113. 84 ± 26. 66 ) ng/ml and ( 652. 11 ± 140. 39) ng/ml, respectively] were significantly higher than that of control group [(43.28±17.30) ng/ml and (265.60±53.88) ng/ml,respectively, P=0. 000]. The expression of HIF-1 was positively associated with that of Ang-2. (r=0. 700, P= 0. 000). There was no difference in expressions of HIF-1 and Ang-2 before and after treatment with thalidomide (P=0. 498 and =0. 136, respectively). However, significant reduction of Ang-2 [(113. 80±73. 60) ng/ml(P=0. 003)] was found in 8 effectively treated patients after thalidomide treatment. Conclusions HIF-1 and Ang-2 might play an important role in the formation of vascular malformation. The extent of Ang-2 reduction after thalidomide treatment may be helpful in evaluating its efficacy or prognosis.

Objective To study the long-term effect of argon plasma coagulation (APC) combined with proton pump inhibitor (PPI) on Barrett esophagus (BE). Methods A total of 36 patients, histologically proven as having BE from 2004 to 2007, were enrolled to underwent a therapy of APC plus PPI. The patients were re-examined on endoscopy at 1, 6 and 12 months after first APC and once a year thereafter.Results A total of 48 APC sessions were given to 36 patients with a mean number at 1. 33 per patient. The effective rate of reversal of BE was 100%. The follow-up was accomplished for all patients in 14-51 months with a median of 36months. The total recurrence rate (RR) of BE reached 16. 7% (6/36). The 1-year and 2-year RRs were 2. 8% (1/36) and 11.1% (4/36), respectively. The logistic regression analysis suggested that 2-year and total RRs were related to APC sessions ( P ＜ 0. 01 ). Conclusion The therapy of APC combined with PPI for BE is safe and of long-term effects.

ObjectiveTo study the pathogcncsis of gastrointestinal vascular malformation (GIVM) and the potential mechanism of thalidomide in the treatment of gastrointestinal bleeding due to GIVM.Methods We collected the surgical intestinal specimens from 10 patients who suffered from massive hemorrhage of gastrointestinal tract owning to GIVM and the normal intestinal mucosa around the lesions,as well as normal intestinal mucosa from healthy subjects.Immunohistochemical(IHC) staining was carried out to investigate the differences of angiopoietin 2 ( Ang2 ),Notch1 and delta like ligand 4 (Dll4) in the above three intestinal mucosa to find the relationship with the pathogenesis of GIVM. Human umbilical vein endothelial cells(HUVECs) were cultured with 0,25,50,100 and 200 mg/L thalidomide for 24 or 48 hours to observe their mRNA and protein expressions of Ang2,Notch1,Dll4 by real-time PCR and Western blot.ResultsBy IHC staining,more expressions of Ang2,Notch1 and Dll4 in the lesions were detected than those in the normal intestinal mucosa around the lesions and the normal intestinal mucosa in healthy people.The expressions of Ang2,Notch1 and Dll4 were significantly correlated (P =0.016,r =0.732),and the expressions of Notch1 and Dll4 were absolutely correlated ( P =0.000,r =1.000).Real-time PCR and Western blot showed that thalidomide could down-regulate the expressions of them,which were in a concentration-dependent manner.ConclusionAng2,Notch1 and Dll4 may correlate with the pathogenesis of GIVM,while thalidomide can concentration-dependently down-regulate the expression of Ang2,Notch1 and Dll4,which may be one of the mechanism that thalidomide play a therapeutic role in GIVM.