The Mediating Effects of Learning Motivation on the Association between Perceived Stress and Positive-Deactivating Academic Emotions in Nursing Students Undergoing Skills Training / 간호학회지

PURPOSE: Nursing students experience a high degree of perceived stress during skills training. The resulting academic sentiment is worthy of research. This study examined the learning motivation as a mediator in the association between perceived stress and positive deactivating academic emotions in nursing students undergoing skills training. METHODS: A survey was conducted on 386 third-year undergraduate nursing students at a university in Changchun, China, in 2017. The survey included the items on perceived stress, learning motivation during nursing skill training, and general academic emotion. There were 381 valid responses (response rate=98.7%). Based on the results of partial correlation and stepwise multiple regression equations, the study examined the mediation model between perceived stress, learning motivation and positive-deactivating academic emotions using process 2.16 (a plug-in specifically used to test mediation or moderation effect in SPSS). RESULTS: There was a significant negative correlation between students' perceived stress and learning motivation during nursing skills training and positive-deactivating academic emotions. Nervousness, loss of control, and interest in developing reputation had significant predictive effects on positive-deactivating academic emotions. The mediating model was well supported. CONCLUSION: Learning motivation during nursing skills training lessened the damage of perceived stress on positive-deactivating academic emotions. Improving students' motivation to learn could reduce their perceived stress and build more positive emotions. Positive emotions during learning played an important role in helping nursing students improve skills and enhance their nursing competence.

The Mediating Effects of Learning Motivation on the Association between Perceived Stress and Positive-Deactivating Academic Emotions in Nursing Students Undergoing Skills Training

PURPOSE@#Nursing students experience a high degree of perceived stress during skills training. The resulting academic sentiment is worthy of research. This study examined the learning motivation as a mediator in the association between perceived stress and positive deactivating academic emotions in nursing students undergoing skills training.@*METHODS@#A survey was conducted on 386 third-year undergraduate nursing students at a university in Changchun, China, in 2017. The survey included the items on perceived stress, learning motivation during nursing skill training, and general academic emotion. There were 381 valid responses (response rate=98.7%). Based on the results of partial correlation and stepwise multiple regression equations, the study examined the mediation model between perceived stress, learning motivation and positive-deactivating academic emotions using process 2.16 (a plug-in specifically used to test mediation or moderation effect in SPSS).@*RESULTS@#There was a significant negative correlation between students' perceived stress and learning motivation during nursing skills training and positive-deactivating academic emotions. Nervousness, loss of control, and interest in developing reputation had significant predictive effects on positive-deactivating academic emotions. The mediating model was well supported.@*CONCLUSION@#Learning motivation during nursing skills training lessened the damage of perceived stress on positive-deactivating academic emotions. Improving students' motivation to learn could reduce their perceived stress and build more positive emotions. Positive emotions during learning played an important role in helping nursing students improve skills and enhance their nursing competence.

Dissociated mouse tooth germ epithelial cells retain the expression of tooth developmental genes during reaggregation process / 生物工程学报

Generation of bio-engineered teeth by using stem cells will be a major approach for bioengineered implantation. Previous studies have demonstrated that dissociated tooth germ cells are capable of generating a tooth after reaggregation in vitro. However, the cellular and molecular mechanisms underlying this tooth regeneration are not clear. In this study, we dispersed E13.5 molar germ into single cells, immediately reaggregated them into cell pellet, then grafted the reaggregates under mouse kidney capsule for various times of culture. We investigated the morphogenesis and the expression of several developmental genes in dental epithelial cells in reaggregates of tooth germ cells. We found that dissociated tooth germ cells, after reaggregation, recapitulated normal tooth developmental process. In addition, dissociated dental epithelial cells retained the expression of Fgf8, Noggin, and Shh during reaggregation and tooth regeneration processes. Our results demonstrated that, despite of under dissociated status, dental epithelial cells maintained their odontogenic fate after re-aggregation with dental mesenchymal cells. These results provided important information for future in vitro generation of bio-engineered teeth from stem cells.

Identification of corium stomachium galli by molecular taxonomy / 中国中药杂志

<p><b>OBJECTIVE</b>To establish a convenient and accurate method of DNA molecular marker for the identification of corium stomachium galli.</p><p><b>METHOD</b>Cytb mtDNA sequences of Gallus gallus domestica and three other species of poultry were downloaded from Genbank. Species-specific PCR primers were designed according to the differential DNA fragments of the cytb genes. PCR tests were performed with the DNAs extracted from G. gallus domestica, three other poultry species and domestic mammal animals.</p><p><b>RESULT</b>The specific primers of G. gallus domestica could only amplify the cytb mtDNA of G. gallus domestica.</p><p><b>CONCLUSION</b>The primers are specific to G. gallus domestica mtDNA and can used to discern Corium stomachium from the false medicine.</p>

Frequency distributions of six short tandem repeat loci multiplexing in Jilin district,China / 临床检验杂志

Objective To analyze the genetic polymorphism of three short tandem repeat (STR) double loci,namely,six STR loci in the Chinese population of Han nationality in Jilin district and to obtain the corresponding genetic data.Methods DNA was extracted from the blood cells of one hundred and three unrelated individuals of Han nationality in Jilin district;Six loci were divided into three groups which were groupⅠ(TPOX+CSF1PO),groupⅡ(D3S1358+D13S317) and groupⅢ(D5S818+D19S400).The extracted DNA were amplified with PCR multiplexing method.The PCR products were analyzed by non-reduced PAGE,followed by silver staining.The allele frequency distributions of six STR loci were studied by statistical procedures.The heterozygosity (H),discrimination power (DP),probability of exclusion (PE) and polymorphic information content (PIC) were calculated.Results The allele frequencies of six loci were obtained.The genotypes distributions of the loci were consistent with Hardy-Weinberg equilibrium and had higher heterozygosities and PIC.The H,DP,PE and PIC were 0.7511-0.8376,0.8273-0.9247,0.5167-0.6718 and 0.7100-0.8195 respectively.Conclusions The three STR double loci exhibited higher polymorphism and were better genetic markers.The data on the allele frequencies of these six STR loci may be used in individual identification,paternity testing and in other population genetic researches.

Identification and characterizaton of mitochondrial DNA and cytochrome b patial gene in Martes zibellina L / 吉林大学学报(医学版)

Objective To explore the characterization of mitochondrial DNA and cytochrome b(Cytb) gene from Martes zibellina L..Methods The mtDNA were extracted from fresh heart and liver of Martes zibellina L.by alkaline lysis method respectively,and Cyt b gene segment was amplified by PCR technique and sequenced.Results The complete 16800 bp mtDNA was separated from both samples,and the Cytb gene with 310 bp segments was amplified by PCR and the sequence indicated that the homologous similarity was 99% with sable Martes zibellina L.(GenBank:AB026109.1) and it was 45% with other animal similarity.Conclusion There is complete mtDNA in tissues of Martes zibellina L.and Cytb partial gene from martes zibellina L.may be used as the genetic marker for identification of different species.

The experimental investigation of Sdosodine Hydrochlorida on immune function in mice / 中国免疫学杂志

Objective:To explore improving impact of Sdosodine Hydrochlorida(SBHL) on immune fuction in mice treated with cyclophosphamide(CTX).Methods:BALB/c mice treated with CTX were administrated with SBHL(40 mg/kg) for 7 d.The weights of spleens and thymus of the mice,specific antibody formation of splenocytes,serum agglutinin titer and hemolysin CH50 in mice immunized with SRBC were assayed.The proliferation of mouse splenic lymphocytes actived with ConA were measured.The peritoneal macrophage phagocytosis in mice were analysized.Results:After treatment with SBHL,the indexes of thymus and spleen,and the proliferation of mouse splenic lymphocytes activated with ConA were increased markedly in a dose-dependent manner.The peritoneal macrophage phagocytosis was also improved.Only at the dose of 40 mg/kg were the weights of spleens of mice,specific antibody formation by splenocytes,serum agglutinin titer,hemolysin CH50 of the mice immunized with SRBC increased significantly.Conclusion:SBHL has a remarkable improving effect on the immune functions inhibited by CTX in mice,which may be another important antitumor mechanism of SBHL.