Objective To explore the effects of environmental factors such as temperature, relative humidity and ventilation rate on release quantity of formaldehyde in woodiness boards. Methods A small climate chamber was employed to control the temperature, concentration of vapor and ventilation rate. The quantity of formaldehyde released from woodiness boards was determined by 4160 Formaldehyde Analyzer of INTERSCAN. Results The released quantity of formaldehyde increased from 0.12 mg/(m2?h) to 0.35 mg/(m2?h) as the temperature increased from 18 ℃ to 38 ℃, it increased from 0.20 mg/(m2?h) to 0.46 mg/(m2?h) as the concentration of vapor increased from 3.99 mg/L to 15.75 mg/L, it increased from 0.21 mg/(m2?h) to 0.62 mg/(m2?h) as the ventilation rate increased from 0.5 h-1 to 2.0 h-1. Conclusion The emission rate of formaldehyde in woodiness boards will be accelarated when the temperature, concentration of vapor and ventilation rate increased.

Objective To understand the emission rate and the attenuation rule of formaldehyde in the artificial woodiness boards for sell in China and to study the efficiency of formaldehyde-eliminator. Methods With the small Climate-Chamber and 4160 formaldehyde-analyzer, quantity of formaldehyde released from some kinds of woodiness boards was analyzed under the different condition of temperature, relative humidity and ventilation cycle. Results The emission rate of formaldehyde in most veneers was over 1.2 mg/(m2?h), in most of moderate density fibreboard, it was 0.7～1.0 mg/(m2?h) and in the veneer for medical application, it was 0.3～0.9 mg/(m2?h). Formaldehyde emission rates of all the three kinds of woodiness boards investigated in the present study showed a fall of 75% in a period of time after made, and met the National Standard of China. The formaldehyde eliminator could reduce the emission rate of formaldehyde remarkably, however the effect perhaps weakened in a short time. Conclusion The formaldehyde emission rates in all kinds of woodiness boards investigated in the present paper are different, they exceed the National Standard of China while the boards made immediately and will reduce after 10-15 days in a given condition. The formaldehyde eliminator used in the study shows a remarkable effect but lasts only a short time.

Objective To evaluate the application of Herniamesh in repairing adult umbilical hernia.Methods The data of 12 aduh patients with umbilical hernia were treated with Hemiamesh from January 2007 to March 2009 was analyzed retrospectively,included characteristics,methods and effects of Hemiamesh Oval Patch 0812 on the repair of hernia.Results All cases were cured.The average stay in hospital was (5±2)d.No postoperative complication,no recurrence follow-up visited 1 to 25 months.Conclusion Repairing umbilical hernia in adult with Hemiamesh Oval Patch 0812 is a kind of simple,safe,effective operation and the ring of hernia no more than 4cm.

Multilocus sequence typing (MLST) is a molecular genotyping method based on nucleotide sequencing. The procedure of this method characterizes isolates of bacterial species using the DNA sequencing of multiple housekeeping genes(usually seven). For each housekeeping gene, the different sequences present within a bacterial species are assigned as distinct alleles.For each isolate, the alleles at each of the loci define the allelic profile or sequence type (ST). MLST has the advantages of being robust (based on genetic data) and electronically portable to generate data that allow rapid and global comparisons between different laboratories. In this paper, the principle, method, data analysis, application, advantages and flaws of MLST are introduced.

Objective To assess the outcome of liver transplantation in patients over sixty years of age,in order to attempt to expand the indications of liver transplantation. Methods From August,2000 to January,2002, the clinical data of 36 patients who underwent liver transplantation in our department were analysed retrospectively. Of the 36 cases, the data (operating time, the length of hospitalization, rejection rate and ICU stay days after operation) of 5 patients whose age were ≥60 years (elderly group) and the data of 31 patients whose age were under 60 years (

Objective:To construct a recombinant eukaryotic expressive vector of pEGFP-N3-M-IL-2(88 Arg,125 Ala),and to study the expression of this gene in the Glioma cell line U 87,and to detect its antitumor activities of the fusion protein M-IL-2(88 Arg,125 Ala).Methods:The target fusion gene M-IL-2 (88 Arg,125 Ala) was amplified by PCR from pPICZαA/M-IL-2 (88 Arg,125 Ala) and cloned into pEGFP-N3 vector after digestion to construct recombinant eukaryotic expressive vector pEGFP -N3-M-IL-2( 88 Arg,125 Ala).And then recombinant plasmid pEGFP-N3-M-IL-2(88Arg,125Ala) was transfected into Glioma cell U87 by LipofectamineTM2000 immediately after it was confirmed by restrictive enzyme analysis and sequencing .RT-PCR and Western blot were used to confirm expression of the fusion gene in the U87.Prohibitory effect of recombinant M-IL-2(88Arg,125Ala) protein on U87 was assessed by CCK-8 assay.Results:Restrictive analysis and sequence analysis revealed that M-IL-2(88Arg,125Ala) fusion gene was cloned into the vector pEGFP-N3 suc-cessfully,fusion gene M-IL-2(88Arg,125Ala) could express in U87 cells and could inhibit the growth of U87 cells.Conclusion:The eu-karyotic expression plasmid pEGFP-N3-M-IL-2( 88 Arg,125 Ala) was constructed and expressed in U 87 cells successfully ,the fusion protein could inhibit the growth of U87 cells.We laid a foundation for further research of gene M-IL-2(88 Arg,125 Ala).

Objective To observe the diurnal variation of intraocular pressure(IOP)measured with Goldmann applanation tonomoter(GAT)in patients with primary open angle glaucoma(POAG),normal tension glaucoma(NTG)and healthy controls,and to compare the differences of diurnal variation curves between two eyes of each subject and define the distribution of the peak of IOP. Design Prospective case series.Participants POAG patients,NTG patients and healthy controls.Methods The diurnal variation of IOP in the two eyes of each of 30 POAG patients,30 NTG patients and 30 normal controls were investigated and the distributions of the peak IOP were observed.Main Outcome Measure Intraocular pressure.Results Measured with GAT,6.7% right eyes and 10.0% left eyes of normal people,20.0% right eyes and 23.3% left eyes of NTG patients,and 23.3% right eyes and 20.0% left eyes of POAG patients showed peak IOP at the time points of out-office period.Conclusions POAG patients,NTG patients and normal controls have asymmetric IOP diurnal variation.The two eyes of one individual cannot always be treated as the same.The IOP peak can occur at the time point during the out-office time.Measure IOP in office-time only may miss the dynamic information of IOP.

Objective:To investigate the common reasons,clinical features and the strategy of management with postoperative bleeding in thorax and abdominal cavity in orthotopic liver transplantation(OLT).Methods:Data based on the 12 cases undergoing OLT in our hospital from August 2000 to January 2002 were collected and analyzed.Results:The most common reason for bleeding post OLT was staxis in abdominal cavity(n=5),then was as followed:the abdominal bleeding caused by hepatic artery thrombolytic therapy(n=3),liver biopsy(n=2),Tipps(n=1),surgical technical reason(n=1).In all 12 cases,re operation of laparotomy was needed in 6 because of the massive bleeding.Acute renal failure happened in 5,and 3 needed hemodialysis.Four patients died postoperatively from massive abdominal bleeding,and 3 caused directly by the acute renal failure.Conclusion:Bleeding in the thorax and abdominal cavity happens frequently after OLT,and staxis in abdominal is the most common reason.The correct management for bleeding is the key thing to prevent complications.It is important to pay close attention to perioperative improvement of coagulative capacity,control of massive bleeding and prevention of renal failure.

Objective To explore therapeutic effects and mechanisms of radical scavenger edaravone on experimental cerebral hemorrhage.Methods Two hundred-forty male SD rats were divided randomly into four groups:control group,cerebral hemorrhage group,edaravone treatment group before operation (A) and edaravone treatment group after operation (B).Experimental cerebral hemorrhage model was made according to the method reported by Rosenberg.Water quantity contained in brain and nervous missing sign were observed,meanwhile the levels of superoxide dismutase (SOD) and malondialdehyde (MDA) in brain tissue were measured.Results Compared with cerebral hemorrhage group,nervous missing sign and water quantity contained in brain obviously changed in edaravone treatment group (P

Objective To discuss the significance of abnormal expression of Rb,p53 and PCNA in patients with bladder carcinoma and the correlation with the tumor grade,clinical stage and relapse.Meth- ods Immunohistochemical method was used to detect the Rb,p53 and PCNA gene expression in 60 cases with bladder carcinoma.Results The positive rates of p53,PCNA in 60 cases of bladder cancer is both 40.0 %.There were 27(45 %)cases lack of Rb expression.Multiple altered expression was found in 30 cases (50.0 %).The abnormal expression of Rb,p53 and PCNA was closely related to the tumor grade,clinical stage and relapse.Conclusion The detection of multiple gene is more valuable than that of single gene. Multiple altered expression of Rb,p53 and PCNA and their synergistic action might play an important role in the genesis and development of bladder cancer.