The association between immediacy and socio‐communicative style     

Candice E. Thomas  Virginia P. Richmond  James C. McCroskey 《Communication Research Reports》2013,30(1):107-114

The very strong association of immediacy with positive instructional outcomes has led some to question whether teacher immediacy amounts to anything more than being responsive with students. The present study demonstrates that a measure of teacher immediacy is strongly associated with the Socio‐Communicative Style of the teacher—both the assertiveness and the responsiveness components. It is concluded that it is theoretically justified to teach pre‐service or in‐service teachers to engage in immediate behaviors as means of increasing their communication competence and probably teaching effectiveness. The impact of immediacy observed in the classroom environment is seen as likely to be generalizable to other communication contexts.  相似文献   

Phubbing friends: Understanding face threats from,and responses to,friends’ cell phone usage through the lens of politeness theory     

Lynne Kelly  Robert L. Duran 《Communication quarterly》2013,61(5):540-559

The study examined friends’ phubbing (i.e., the act of snubbing a relational partner by using a cell phone in his/her presence), through the lens of politeness theory. Quantitative and qualitative data from 404 participants revealed that, although most accepted the behavior and did not view it as a face-threatening act (FTA), others perceived it as face threatening, particularly of positive face, eliciting varied negative emotions. Specific behaviors such as repeatedly looking at the phone or playing a game alone had the highest positive face-threat scores. Most chose not to respond to the FTA. Results indicated that increased perception of the behavior as face threatening was associated with higher reported likelihood of responding with politeness strategies, although no specific strategy emerged as the preferred response.  相似文献   

Somatic embryogenesis in wild relatives of cotton （Gossypium Spp.）   总被引：2，自引：0，他引：2  

Rao AQ  Hussain SS  Shahzad MS  Bokhari SY  Raza MH  Rakha A  Majeed A  Shahid AA  Saleem Z  Husnain T  Riazuddin S 《Journal of Zhejiang University. Science. B》2006,7(4):291-298

Wild cotton species can contribute a valuable gene pool for agronomically desirable cultivated tetraploid cultivars. In order to exploit diploid cotton a regeneration system is required to achieve transformation based goals. The present studies aimed at optimizing the conditions for regeneration of local varieties as well as wild species of cotton. Different callus induction media were tested with varying concentrations of hormones in which sucrose was used as nutritional source. Different explants （hypocotyls, cotyledon, root） were used to check the regeneration of both local cotton plants and wild relatives using T ＆ G medium, BAP medium, CIM medium, EMMS medium, and cell suspension medium. Different stages of embryogenicity such as early torpedo stage, late torpedo stage, heart stage, globular stage and cotyledonary stage were observed in wild relatives of cotton. The results of this study pave the way for establishing future transformation methods.  相似文献   

中国近代生物学家的办刊理念     

徐文梅 《编辑学报》2012,24(5):427-428

中国近代科技期刊史上,生物学期刊有着重要的地位,是最早获得世界声誉的期刊之一,这主要归功于近代生物学家卓越的办刊理念。突出表现在:走国际化的办刊道路、视论文质量为期刊的第一生命,以及他们崇高的服务理念。并将国内最成功的学术期刊——《细胞研究》与之作部分对比。  相似文献   

Mobile Phone Use in AA Networks: An Exploratory Study     

Scott W. Campbell  Michael J. Kelley 《Journal of Applied Communication Research》2006,34(2):191-208

The purpose of this study was to explore the role of mobile phone use for mutual support within social networks of Alcoholic Anonymous (AA). A sample of mobile phone owners and non-owners in AA was surveyed to assess their perceptions and uses of this technology. Mobile phone owners reported very positive perceptions of the technology as a resource for recovery and heavy use of the mobile phone for this purpose. Non-owners also reported positive perceptions of the mobile phone as a resource for recovery and that expense was the primary reason for not using a mobile phone in their recovery efforts. Heuristic, theoretical, and practical implications of the study are included in the discussion.  相似文献   

疫情防控期间细胞生物学云课堂教学实践与启示——以宁夏医科大学为例     

王娅娜  党洁 《科教文汇》2021,(6)

在新冠肺炎疫情防控期间,国家教育部提出“停课不停教”“停课不停学”的要求。各大高校均采用了线上授课的方式落实该项要求。宁夏医科大学细胞生物学系依托系部已有的全套细胞生物学慕课及教学云资源与该校的在线学习平台为基础,开设了细胞生物学云课堂。该文对宁夏医科大学开设的细胞生物学云课堂的教学实践与启示进行了总结,以期为今后开展线上线下教学提供可参考的经验。  相似文献   

Genetic Association of rs2237572 Cyclin-Dependent Kinase 6 Gene with Breast Cancer in Iraq     

Dalya Sh. Al-owaidi  Moaed E. Algazally  Alaa Sadeq Alawaad 《Indian journal of clinical biochemistry : IJCB》2021,36(3):304

This case–control study is aimed to evaluate serum concentration of Cyclin-Dependent Kinase 6 (CDK6) and the genetic association between rs2237572 CDK6 gene and breast cancer (BC) in Iraq. To attain this goal, 80 patients with BC as cases and 80 healthy individuals as controls were included. Further, BC patients were sorted according to the molecular classification into four subtypes of Luminal A, Luminal B, Her2/neu enriched and TPN. Serum concentration of CDK6 enzyme, allelic and genotypic frequencies of rs2237572 CDK6, and the occurrence of BC phenotype and its subtypes in the studied population were investigated. ELISA technique was used to perform the biochemical testing, while the molecular analysis was achieved by real-time PCR, high resolution melting analysis, conventional PCR, as well as sequencing analysis. The results revealed no significant difference in serum concentration of CDK6 enzyme between patients and healthy controls (p > 0.05). Also, no significant differences were shown between BC patients subtypes (p > 0.05). The rs2237572 CDK6 genotypes were associated with the BC and affirmed that allele C was inherited as a recessive risk factor. Moreover, a highly significant difference between patients’ subtypes in the genotypic frequency of rs2237572 (p < 0.01) was noted. Furthermore, the association of rs2237572 genotypes and CDK6 serum concentration in BC patients showed a considered significant difference between C/C and T/T, C/C and T/C and the CDK6 level (p < 0.05). Nevertheless, T/T and T/C did not show any significant difference with the CDK6 level. Hence, it was concluded that the rs2237572 of CDK6 gene is significantly correlated with BC.  相似文献   

Role of Oncofetal Protein CR-1 as a Potential Tumor Marker for Oral Squamous Cell Carcinoma     

Anu Jain  Sumanth Kumar Mallupattu  Reetu Thakur  Satyawati Mohindra  Amanjit Bal  Ashim Das  Sushmita Ghoshal  Arnab Pal 《Indian journal of clinical biochemistry : IJCB》2021,36(3):288

Cripto-1 (CR-1) is an oncofetal protein with its role as a key factor in early process of carcinoma has been evaluated in cases of various cancers. However, very few studies have reported its role in oral cancer, which is the sixth most common cancer around the world, particularly with high prevalence in developing countries. Oral squamous cell carcinoma (OSCC) is the most predominant (90%) of all the histological types of oral cancer. Late detection, associated with increased morbidity and mortality, is mainly attributed to non-availability of a suitable biomarker for the disease. In the present pilot study, we have evaluated the role of soluble CR-1, in serum as a potential tumor marker for OSCC. CR-1 was estimated using sandwich ELISA in serum samples of 50 biopsy proven OSCC patients (pre and post treatment) along with age and gender matched healthy controls. Immunohistochemistry was also done in corresponding tumor tissue sections to check the expression of CR-1. Pre-treatment CR-1 was found to be 2.25-fold higher in serum of OSCC patients as compared to control (p < 0.0001***), which was reduced to 1.6 folds post treatment (p = 0.0006***). CR-1 levels were comparatively higher in early stage of disease. Upon IHC 80% of the cases were found to be positive for CR-1. This study provides evidence that serum levels of CR-1 are elevated in patients of Oral Squamous Cell Carcinoma, which decrease post treatment. Also, the association of expression of protein with tumor progression predicts CR-1 as a molecule that can be further evaluated as a potential tumor maker in OSCC.  相似文献   

前列腺癌:亟待肿瘤标志物和治疗新靶点(英文)简     

Juliana FELGUEIRAS  Joana Vieira SILVA  Margarida FARDILHA 《Journal of Zhejiang University. Science. B》2014,15(1):16-42

Prostate cancer （PCa） incidence and mortality have decreased in recent years. Nonetheless, it remains one of the most prevalent cancers in men, being a disquieting cause of men＇s death worldwide. Changes in many cell signaling pathways have a predominant role in the onset, development, and progression of the disease. These include prominent pathways involved in the growth, apoptosis, and angiogenesis of the normal prostate gland, such as an- drogen and estrogen signaling, and other growth factor signaling pathways. Understanding the foundations of PCa is leading to the discovery of key molecules that could be used to improve patient management. The ideal scenario would be to have a panel of molecules, preferably detectable in body fluids, that are specific and sensitive biomarkers for PCa In the early stages, androgen deprivation is the gold standard therapy. However, as the cancer progresses, it even- tually becomes independent of androgens, and hormonal therapy fails. For this reason, androgen-independent PCa is still a major therapeutic challenge. By disrupting specific protein interactions or manipulating the expression of some key molecules, it might be possible to regulate tumor growth and metastasis formation, avoiding the systemic side effects of current therapies. Clinical trials are already underway to assess the efficacy of molecules specially designed to target key proteins or protein interactions. In this review, we address that recent progress made towards under- standing PCa development and the molecular pathways underlying this pathology. We also discuss relevant molecular markers for the management of PCa and new therapeutic challenges.  相似文献   

应用型本科教学背景下《细胞工程》教学改革探索     

董丽丽 《黄山高等专科学校学报》2014,(3):134-136

《细胞工程》是生物技术专业的专业主干课,通过优化课程体系、精选教学内容、改进教学方法和手段以及探索开放性实验教学等方面进行教学改革,调动了学生学习的积极性和创造性,提高了学习兴趣.  相似文献