The paper introduces the background of YY/T 0841 standard, and interprets the main content of this standard. It is helpful to understand and applicate the standard.
Electrical Equipment and Supplies ; standards

Objective: To explore therapeutic effect of levosimendan combined dobutamine on refractory heart failure (RHF).Methods: A total of 90 RHF patients, who were treated in our hospital from Apr 2014 to Oct 2015, were selected.According to random number table, patients were randomly and equally divided into dobutamine group and combined treatment group (received dobutamine combined levosimendan).Cardiac function improvement after treatment,and adverse reactions during treatment were compared between two groups.Results: After treatment, cardiac function improvement rate of combined treatment group was significantly higher than that of dobutamine group (86.7% vs.60.0%), P=0.02.Compared with before treatment, after treatment, there was significant reduction in dyspnea score, and significant rise in LVEF and stroke votume(SV) in both groups (P<0.05 or <0.01);compared with dobutamine group after treatment, there was significant reduction in dyspnea score [(1.58±0.78) scores vs.(1.02±0.47) scores], and significant rise in LVEF [(42.61±7.10)% vs.(50.21±7.82)%] and SV [(57.62±14.63)ml vs.(64.21±15.12)ml] in combined treatment group, P<0.05 or <0.01.Hypotension, myocardial ischemia and arrhythmia etc.occurred in both groups, but there was no significant difference in incidence rate of total adverse reactions (P>0.05).Conclusion: Levosimendan combined dobutamine possess significant therapeutic effect on refractory heart failure and safety is good, which is worth extending.

Objective To explore the biological function of ICAM-1and LFA-1 in tumor metastasis,we observed the expression of ICAM-1(Intercellular Adhension Molecule-1)and LFA-1(Lymphocyte function related antigen-1)in cancer tissue and normal tissue.Methods A total of the samples were obtained from hospital,it includes 60 cases of breast cancer and 60 cases of normal mammary tissues.We observed the expression of ICAM-1 and LFA-1 by SP immunohistochemistry.We analyzed the relationship between the expression of ICAM-1,LFA-1and lymphatic vessel metastasis of breast cancer.Results The expression positive rate of ICAM-1and LFA-1 in breast cancer was obviously higher than that in normal mammary tissues(P

Objective To investigate the differential expression of synaptophysin(SYN)in the developing rat cochlea,to analyze the relationship between the expression of SYN and auditory functional development,and to explore the source of the adenosine triphosphate(ATP)in the cochlea.Methods The immunofluorescence was applied to observe the differential expression of SYN in the cochlea of SD rats on different days(p1,p5,p10,p14 and p28)after parturition.Results No significant stain was observed in the Kolliker organ or the Corti's organ of P1,P5 and the top turn of the cochlea in P10.The SYN expression was turned on the outer spiral bundle,the inner spiral bundle,and the medial wall of the Deiters' cell of the cochlea in P14,P28 and the second or the third turn of Corti's organ of P10.All the spiral ganglion neurons(SGN)were stained in different aged cochlea.Conclusion The expression of SYN was different during development of rat cochlea.This difference was in favor of the configuration constructed between nerve endings and target cells.It also played a key role in the formation of correct auditory coding during auditory system development.The hair cells and the supporting cells,possible the source of ATP in the cochlea,contained ATP that maybe existed in a non-vesicular form or specific staining of non-SYN.

The basic design plan of unified intelligence system with a demonstration effect was worked out using the system integration method, and its technical implementation was elaborated in aspects of enterprise service bus, database integration, platform service, and key business application from the operational point. Its extended appli-cation in clinical practice, scientific research, decision-making and hospital management was studied in order to further improve the hospital management level.

Female ; Hospital Administration ; Humans ; Male ; Physical Examination ; methods

Mitochondrial aldehyde dehydrogenase(ALDH2),one of the isoforms of aldehyde dehydrogenase,has multiple enzymatic functions including the activity of dehydrogenase and esterase.The metabolisms of ethanol,amino acids,biogenic amine,vitamin or steroid in the body produce various substances of aldehyde.With the help of co-factor NAD(P)+,ALDH2 can convert aldehydes into corresponding carboxylic acid,which plays a key role in reducing toxic effects of aldehydes on the body.It does not need co-factor when ALDH2 works as esterase.It can convert carboxylic ester or other acids into corresponding carboxylic acids or alcohols.Recently,it has been shown that the decrease of ALDH2 activity exacerbates multiple factors(such as ethanol,ischemia)-induced myocardial injury and accelerates the development of nitroglycerin tolerance.Therefore,the development of specific agonists of ALDH2 may provide a novel approach to the therapy and prevention of heart diseases.

BACKGROUND: Osteosarcoma cell OS-9607 is a cell line cultured from human osteosarcoma tissue. To construct cDNA library of this cell line so as to clone target gene from it.OBJECTIVE: To construct cDNA library of osteosarcoma cell OS-9607 by switching mechanism at 5' end of RNA transcript (SMART) technique and analyze its quality.DESIGN: Verified experimental study SETTING: Department of Orthopaedics, Changhai Hospital, Second Military Medical University of Chinese PLA MATERIALS: This experiment was carried out at the Department of Orthopaedics, Changhai Hospital, Second Military Medical University of Chinese PLA in May 2005. Osteosarcoma cell OS-9607 was cultured in CO2 incubator. Cells were pre-treated with DM for 30 minutes, recovered for 24 hours in standard culture medium. The whole RNA of osteosarcoma cell OS-9607 was isolated by RNAease reagent kit. The quantity and integrity of total RNA was detected by ultraviolet spectrometer and electrophoresis on a denaturing formaldehyde agarose gel stained by ethidium bromide (EtBr). METHODS: Total RNA was extracted from human osteosarcoma cell OS9607 and mRNA was isolated, cDNA of OS-9607 cells was acquired by in situ polymerase chain reaction (PCR) and long-distance PCR (LD-PCR),then the cDNA was ligated with dephosphorylated λ phage vector. The recombinants were constructed with SMART cDNA library construction kit.The size of cDNA inserts and the diversity of library were detected by PCR.MAIN OUTCOME MEASURES: The quality and integrity of total RNA, the titer of un-amplified and amplified library and recombination fraction; analysis of cDNA length of library RESULTS: ①The concentration of the isolated total RNA was determined and the measuring absorbance was between 260 nm and 280 nm. Its absorptance was about 1.9 A. 0.8％ denaturing formaldehyde agarose gel electrophorosis showed clear 28S rRNA and 18S rRNA,and the brightness rate of 28S rRNA and 18S rRNA (28S/18S) was 2:1. ②After linked to λ phage in vitro, packed and transfected host bacteria, the titer of unamplified library was 2.2×107 pfu/mL, and the titer of amplified 1 ibrary arrived to 4.5×1010 pfu/mL. The recombination fraction analysis showed that there were 8 blue plaques and 1 360 colorless plaques in one plate, so the recombination fraction was 99.5％. ③ The obtained cDNA library consisted of 1.6×106 recombinant bacteriophages and the average exogenous inserts of the recombinants was 1.5 kb.CONCLUSION: These results suggest that the obtained osteosarcoma cell OS-9607 cDNA library has high quality, which sets up a firm foundation for the further research on osteosarcoma cell OS-9607 and its elated genes screen.

Objective To study the anti-tumor effect of water extracts from Sophora Moorcroftiana seed(SMSWE) in vivo on mice.Methods S180-bearing mice group were observed.The inhibitory rate of tumor,survival period,indexes of thymus and spleen,the proliferative ability of T lymphocytes were assayed.Results 1.2 and 2.4 g/kg SMSWE could inhibit the growth of S180 tumor in mice and prolonged survival period(P

Objective To explore the influence of organizational climate and job burnout on turnover tendency among contract nurses, and establish a model of this influence. Methods Totally 450 nurses were selected and investigated with Organizational Climate Questionnaire(OCQ), Maslach job burnout inventory(MBI) and Turnover Intention Scale(TIS). Results The total score of OCQ was 2.71 ± 0.58, the emotional exhaustion was 25.99 ± 13.89, the depersonalization was 10.21 ± 5.37,the personal accomplishment was 21.92 ± 9.27, and the score of TIS was 2.66 ± 0.94. Emotional exhaustion and depersonalization were significantly and negatively correlated to OCQ(r=-0.26,-0.22 ,P<0.01),and positively correlated to TIS(r=0.27,0.25,P<0.01). The personal accomplishment was positively correlated to OCQ(r=0.26,P<0.01), and negatively correlated to TIS(r=- 0.26,P<0.01).OCQ was negatively correlated to TIS(r=-0.37,P<0.01).Multiple linear regression analysis showed that OCQ and personal accomplishment could negatively predict nurses′ turnover tendency(β=-0.43,-0.14,P<0.01), and emotional exhaustion could negatively predict nurses′ turnover tendency(β=-0.10,P<0.01). The path analysis showed organizational climate negatively influenced nurses′ turnover tendency via job burnout, and the value of mediating effect was 23.8%(-0.10/-0.42). Conclusions Turnover tendency is significantly correlated with organizational climate and job burnout among contract nurses. The relationship between organizational climate and nurses′ turnover tendency among contract nurses is mediated in part by job burnout.