1.To promote the connotative development of independent institute through the cultivation of “Institute Culture”
Hong ZHANG ; Ai-ming JIA ; Wen-mei HU ; Xin JIN
Chinese Journal of Medical Education Research 2011;10(9):1036-1038
In the cultural construction of independent institute,there exist the contradiction between tradition and innovation,cultural conflicts between private enterprises and the university.Therefore,adhering to the people-centered concept,coordinating tradition and innovation,merging the advantages of university culture and private enterprises culture into a whole,cultivating the unique spiritual culture,harmonious system culture and unified material culture of independent institute,forming the distinctive “Institute Culture” with its own cultural tradition will provide reference for the theory and practice to enrich and improve the connotative development of independent institute.
2.Analysis of survey results of iodine deficiency disorders in Huai'an City Jiangsu Province in 2011
Cong-ying, JIA ; Wen-zhou, YANG ; Wei, HU
Chinese Journal of Endemiology 2013;32(4):416-418
Objective To evaluate the status of iodine deficiency disorders(IDD) in Huai'an City in 2011 and to provide a scientific basis for adopting target prevention strategies timely and adjusting the intervention policy scientifically.Methods According to The National Project of Surveillance on IDD,probability sampling method (PPS) was used to select 30 counties in Huai'an City,and one primary school was selected randomly from each county,then 40 children aged 8 to 10 were randomly selected in each school.Children's thyroids were examined by palpation and the iodine in salt samples collected in their home was tested by direct titration.At the same time,urine samples from 12 children of the 40 selected children were collected and urinary iodine was tested by As(Ⅲ)-Ce4+ catalytic spectrophotometry.Questionnaire survey of IDD was conducted among 30 students of grade 5 and 5 housewives around that school.Results A total of 1200 children aged 8 to 10 were examined,and the goiter rate was 1.3%(15/1200).All the goiters were level Ⅰ.The goiters of each age group was 0.8%(3/390),1.8%(7/390) and 1.3%(5/420),respectively.The 360 urine samples were collected from children aged 8-10,and the median of urinary iodine was 171.5 μg/L with the proportions of < 20 μg/L,< 50 μg/L and < 100 μg/L were 0(0/360),1.1% (4/360) and 5.6% (20/360),respectively.A total of 1200 salt samples were tested in children's family.The coverage rate of iodized salt was 99.4% (1193/1200) and the qualified rate of iodized salt was 97.7% (1165/1193).The consuming rate of qualified iodized salt was 97.1%(1165/1200),and non iodized salt rate was 0.6%(7/1200).The knowledge rates of IDD were 82.7% (2234/2700) and 69.8% (314/450) in 900 students and 150 housewives,respectively.Conclusions In Huai'an City,except the knowledge rate of IDD,the goiter rate and urinary iodine of children aged 8-10,iodized salt consumption maintain at the stage of the target level.In addition to strengthen the monitoring of iodized salt and to supply qualified iodized salt,it should also increase the focus on health education propaganda in the future.
3.Determination of trans-1,1,1,4,4,4-hexafluoro-2-butene in workplace air by gas chromatography
HU Jia wen CHEN Jia chun YUAN Jing WU Fan RONG Wei feng SHAO Jun li
China Occupational Medicine 2022;49(05):582-
Objective - ,,,,,- - -
To establish a gas chromatographic method for the determination of trans 1 1 1 4 4 4 hexafluoro 2
[ - ()] Methods - ()
butene HFO 1366mzz E in workplace air. HFO 1366mzz E in air was directly collected with aluminum foil
, , ,
composite plastic bag separated by dimethylpolysiloxane capillary column detected by flame ionization detector and
Results - () - 3,
quantified with external standard method. The linear range of HFO 1366mzz E was 6.82 68 200.00 mg/m with the
3,
correlation coefficient of 0.999 9. The detection limit and the lower limit of quantitation were 0.59 and 1.98 mg/m respectively.
- - -
The recovery rate was within 95.45% 103.05%. The relative standard deviation of within batch precision and between batch
- - ,
precision were 2.26% 5.07% and 4.09% 6.82% respectively. The samples can be stored at room temperature for at least seven
Conclusion , ,
days. This method is simple to use with a wide linear range low detection limit high accuracy and precision and
- ()
good sample stability. It can be used for the detection of HFO 1366mzz E in the air of workplace
4.Determination of dimethyl sulfate in workplace air by pre-column derivatization-high performance liquid chromatography
YUAN Jing RONG Wei feng HU Jia wen HE Jia heng MENG Rui bo WU Chuan WU Bang hua
China Occupational Medicine 2022;52(04):425-
Abstract: Objective - -
To establish a pre column derivatization high performance liquid chromatography method for detecting
Methods
dimethyl sulfate (DMS) in workplace air. DMS in workplace air was collected with mercaptopyridine impregnated
(
silicone tube. The derivative of DMS and mercaptopyridine was eluted by mobile phase phase A: water, phase B: acetonitrile,
∶
the volume ratio was 40 60) , and separated with a C18 column, then detected with diode array detector and quantitated by a
Results -
standard curve. The linear range of DMS was 0.17 40.00 mg/L, with the correlation coefficient of 0.999 95. The
detection limit and the lower limit of quantitation were 0.05 and 0.17 mg/L respectively. The minimum detection concentration
and minimum quantitation concentration were 0.02 and 0.04 mg/m³, respectively (air sample volume of 4.5 L, 1.0 mL sample
- - -
solution). The average desorption efficiency was 98.40% 102.00%. The within run and between run relative standard deviations
- -
were 0.61% 3.92% and 1.71% 6.00%, respectively. The samples could be stored at room temperature for at least 14 days.
Conclusion
This method can be used to detect DMS in workplace air.
5.Research progress on detection methods for nitrobenzene compounds in air
WU Fan YUAN Jing HU Jia wen HE Jia heng MENG Rui bo WU Bang hua RONG Wei feng
China Occupational Medicine 2022;52(04):443-
Abstract:
Nitrobenzene compounds (NBCs) are widely used in the world. It has 40 isomers such as nitrobenzene, dinitrobenzene
and nitrotoluene, that are highly toxic and difficult to degrade and can cause harm to human health in different degrees. At pres⁃
ent, there is no unified standard method and occupational exposure limit for the detection of NBCs in the air. In terms of sampling
medium, solid adsorption tube is mostly used for trapping vapor state NBCs, and filter membrane and solid adsorption tube are
mostly used in series for sampling coexist NBCs in vapor state and aerosol state. In the detection methods, gas chromatography
and liquid chromatography are common, and ultraviolet spectrophotometry, Raman spectroscopy, ion migration spectrometry and
some other rapid response methods and technologies are also used in the detection of NBCs. In the detection of NBCs by gas chro⁃
matography, capillary column separation is commonly used, and the main detectors are flame ionization detector, electron capture
detector and mass spectrometry detector. It is of practical significance to establish a method with high sensitivity, strong practica⁃
bility, convenient operation, and can simultaneously collect and detect a variety of NBCs in different states.
6.PRELIMINARY STUDY ON AN ANTIBIOTIC-PRODUCING BACTERIUM
Xi-Qian LAN ; Jun-Hua HU ; Hong-Xiu WEN ; Jia-Lian CHEN ; Ze-Yang ZHOU ;
Microbiology 1992;0(05):-
An antibiotic-producing bacterium, which was numbered as 20 #-5, was separated from the soil in Chongqing. It was identified as the member of pseudomonas. Gram positive bacteria are badly suppressed by it. The antibiotic secreted by 20 #-5 can endure 100℃ for half an hour, and it can also go through the ultrafiltration membrane with pores of 0.22?m.
7.Video-assisted pulmonary veins isolation versus box-lesion for the lone atrial fibrillation in the mid-term follow-up
Chunlei XU ; Qiuming HU ; Yan LI ; Jie HAN ; Wen ZENG ; Yixin JIA ; Xu MENG
Chinese Journal of Thoracic and Cardiovascular Surgery 2015;31(5):274-277
Objective To compare the mid-term results of video-assisted pulmonary veins isolation and box-lesion for lone atrial fibrillation.Methods Between June 2010 to November 2012,80 lone atrial fibrillation(LAF) patients underwent minimally invasive surgical ablation in Beijing Anzhen Hospital,and all of them received left atrial appendage excision and Marshall ligament break in the surgery.Among them,37 cases were performed two epicardial ablation lines in order to created box-lesion based on PVI(14 paroxysmal AF and 23 persistent AF).Follow-up was finished after discharge.Results Mean follow-up was(18.8 ± 7.4) months,and 2 patients were died with non-cardiac disease.The success rate is 78.8% (Paroxysmal AF 87.9%;Persistent AF 72.3%).In the paroxysmal AF patients,the success rate for PVI and Box lesion treatment was 84.6% (11/13) and 92.9% (13/14),P =0.45;in the persistent AF patients,the success rate for PVI and Box-lesion was 58.3% (14/24) and 87.5% (14/16),P =0.04.Conclusion Addition of epicedial ablation lines might increase the cure rate for lone AF therapy,especially for persistent AF.
8.Change on composition of immune cells in spleen of miRNA-126 knockdown mice
Liangyu LEI ; Yan HU ; Mengmeng GUO ; Jia LU ; Wen ZHENG ; Hualin XU ; Chao CHEN ; Lin XU
Chinese Journal of Immunology 2016;32(4):460-464
Objective:To detect the change of composition of immune cells in the spleen of miR-126 knockdown(miR-126KD) mice and preliminarily explore its significance .Methods: The expression level of miR-126 in spleens of miR-126KD mice was deter-mined by Realtime PCR.And the total number of splenocytes was calculated.The pathologic morphology change of the spleen was observed by HE staining.And the changes on proportion of DCs ,macrophages cells ,γδ T cells and NK T cells,CD3+T cells and its subgroup ,as well as CD19+B cells in spleens of miR-126KD mice were analyzed by Flow cytometry and calculated respectively.The level of phosphorylated AKt and NF-κB was analyzed by Western blot assay.Results:Compared with those of WT mice ,the expression level of miR-126 decreased obviously ( P<0.05 ) and the total number of cells increased obviously in spleen of miR-126 KD mice ( P<0.05).Moreover,the pathologic morphology of miR-126KD mice was significantly changed.The proportion and number of NK T cells in the inherent cells were significantly increased ( P<0.05 ) , but the proportion of Mφcells were significantly decreased ( P<0.05 ) . Meanwhile,the proportion and number of CD3+T cells and CD4+T cells in the adaptive immune cells were significantly increased (P<0.05),while the total number of CD19+B cells were significantly decreased (P<0.05).Last,the level of phosphorylation Akt and NF-κB increased obviously in spleen of miRNA-126 knockdown mice.Conclusion: Change obviously on the composition of immune cells subsets in the spleen of miRNA-126 knockdown mice ,which it may be related to the altered level of phosphorylated AKt and NF-κB and provides a preliminary experimental basis for the further exploring the roles of miR -126 in immune response.
9.Application of dynamic pupillometer in the evaluation of pupillary light reflex in C57BL/6 mouse
Rui, LIU ; Lei, ZHANG ; Hao, ZHANG ; Wen-zhi, HU ; Feng, XIA ; Jia, GENG ; Zuo-ming, ZHANG
Chinese Journal of Experimental Ophthalmology 2013;(1):75-80
Background Pupillary light reflex has been widely used in the diagnosis and evaluation of visual system and nervous system diseases.However,in animal experiments,functional evaluation of the visual system and nervous system needs more advanced technology and are affected by many factors.Objective This study was to explore the use of the dynamic pupillometer in evaluating pupillary light reflex and to discuss the influence of brightness of stimulate on relevant curve parameters in C57BL/6 mouse.Methods Ten healthy SPF male C57BL/6 mice were collected in this experiment.White light of five luminance levels (2,8,32,128,256 cd/m2) was used to stimulate the mice following a 2-hour dark adaptation.The stimulation was given at the 60-second intervals,for a duration of 100 ms at every stimulation.An infrared camera and video capture card were used to capture digital images during the measuring process in a scotopic environment,at a speed of 60 frames per second.Measuring outcome was saved in the*.AVI format.A software that was developed by our group was used to determine pupil diameter and output pupillary light reflex curve offline.Pupil initial diameter (R1),constriction amplitude (CA),constriction velocity (CV),latency (T1),time for maximum velocity (T2),time for maximum constriction (T3),time for maximun con-striction to 10.1% R1 re-dilation (RT)and re-dilation velocity (RV)were assessed,and the correlations between luminosity and measuring parameters were analyzed using the Spearman rank correlation.The use of animals followed the Regulations for thd Administration of Affairs Concerning Experimental Animals by State Science and Technology Commission.Results R1 values showed no statistically significant difference among the 5 different luminosity groups(F=1.117,P=0.361).A positive linear correlation was found between stimulating luminosity and CA(r=0.508,P< 0.01),but negative correlations were seen between stimulating luminosity and CV or RV (r=-0.625,-0.609,P<0.01).T1 and T2 values in the 5 different luminosity groups were not statistically significant (F =0.202,P =0.936 ; F =1.584,P =0.195).The different levels of stimulating luminosity showed positive linear correlations with T3 and RT values (r =0.791,0.609,P< 0.01).Conclusions The dynamic pupillometer can quantitatively measure the pupillary light reflex of C57BL/6 mice.The pupillary light reflex dynamic curve parameters of mouse were affected by stimulus luminosity levels.These outcomes offer a basis for the application of the dynamic pupillometer system for measuring pupillary light reflex in animal models.
10.Short-term follow up of bipolar arthroplasties for aged cases with intertrochanteric fractures
Wen-Xue JIANG ; Mao-Zhong HU ; Jia YOU ; Yi-Jin LI ; Meng FAN ;
Chinese Journal of Trauma 2003;0(11):-
Objective To evaluate the short term effect of bipolar arthroplasties in aged cases with intertrochanteric fractures.Methods There were 23 males and 15 females(at age of 70-93 years, average 76 years)with unstable intertrochanteric fractures treated with the third generation cementing techniques and bipolar arthroplasties that were followed up for average 2.4 years.The clinical effect was evaluate with Harris scale,X-ray films and complications.Results Of all,34 cases(89.5%)could walk freely.The average Harris scale was 84.2 points.The average period until walk with full-weight load was 5.6 weeks.The greater trochanters was united in 35 cases(92%)during average 4.2 months.No peri-prothetic ossteolysis and loosening or subsidence occurred.Conclusions Cemented bipolar arthro- plasty has good advantages of reduced laying up period and few complications.The short-term outcome is satisfactory hut the long-term outcome needs deeper observation.