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Aim An inaccurate image of the nursing profession can negatively affect staff recruitment, resource allocation, and the perception of nursing professionalism. Previous research has investigated how nurses were portrayed in the traditional media but relatively little is known from the perspective of the Internet. Therefore, the present study aimed to explore how the nursing profession is portrayed on the Internet by using two popular sources of photographic images. Methods The first 100 images that were obtained using the search term “nurse” on Google Images and Shutterstock were analyzed. The distribution of the image attributes between the two websites was compared with Fisher's exact test. The text description of the images that were obtained from Shutterstock also was analyzed. Results In the 171 images with at least one nurse in them, the nurses were predominately female (91%). The facial expression of the nurses was mostly smiling (85%) and 68% of the nurses had a stethoscope. For those with their hands visible in the images, 39% were holding documents, writing boards, or tablet computers and 29% were shown touching patients. Only 7% were depicted as using medical devices. Conclusions While most of the nursing images were relatively professional-looking, the nurses were portrayed only as engaging in comforting patients and recording data. Nurses who were engaged in clinical tasks or scientific activities, such as research, were absent in the portrayals. A plan needs to be developed to accurately and comprehensively represent the nursing profession on the Internet.

Objectives Vulnerability to transient insomnia is regarded as a predisposing factor for chronic insomnia. However, most individuals with transient insomnia do not develop chronic insomnia. The current study investigated the differential contributing factors for these two conditions to further the understanding of this phenomenon. Method Chronic insomnia patients and normal sleepers with high and low vulnerability to transient insomnia completed measures of pre-sleep arousal, dysfunctional sleep beliefs, and sleep-related safety behaviors. Results Both cognitive and somatic pre-sleep arousals were identified as significant predictors for transient insomnia. Dysfunctional beliefs regarding worry about insomnia and cognitive arousal were predictors for chronic insomnia. Sleep-related safety behavior, although correlated with insomnia severity, was not a significant predictor for both conditions. Conclusions Dysfunctional beliefs associated with worry and losing control over sleep are the most critical factors in differentiating chronic insomnia from transient insomnia. These factors should be addressed to help prevent individuals with high sleep vulnerability from developing chronic sleep disturbance.

lin s.-c., tsai k.-w., chen m.-w. & koo m. (2012) Association between fatigue and Internet addiction in female hospital nurses. Journal of Advanced Nursing69(2), 374–383. doi: 10.1111/j.1365-2648.2012.06016.x Abstract Aims. To report a study conducted to examine the association between fatigue and Internet addiction among female hospital nurses. Background. The Internet provides unprecedented convenience for social interaction and information retrieval. Although excessive Internet use has been demonstrated to correlate with fatigue in adolescents, no studies have examined whether it is associated with fatigue in nurses. Design. Cross-sectional survey. Methods. The study was conducted in August 2010. Female Registered Nurses working in a regional teaching hospital in southern Taiwan were asked to complete a paper-based questionnaire. The questionnaire included questions on demographics, the Chen Internet Addiction Scale and the Chalder Fatigue Scale. Multiple linear regression analysis was performed using Chalder fatigue scale as the dependent variable. Results. Of the 564 (79% response) valid questionnaires returned, 6 and 10% of the participants were classified as diagnostic cases and possible cases of Internet addiction, respectively. Fatigue levels, adjusting for other potential confounders including work unit, shift work, regular self-medication, and self-perceived health status, was significantly associated with both possible cases of Internet addiction and diagnostic cases of Internet addiction. Conclusion. This study is the first in reporting a statistically significant association between fatigue levels and Internet addiction in female hospital nurses. Relevance to clinical practice. Nurses should pay attention to their Internet activity and whether it adds to their fatigue levels. Addictive behaviour should promptly be dealt with to ensure that the best care is provided to patients.

Rapid signaling between vertebrate neurons occurs primarily at synapses, intercellular junctions where quantal release of neurotransmitter triggers rapid changes in membrane conductance through activation of ionotropic receptors. Glial cells express many of these same ionotropic receptors, yet little is known about how receptors in glial cells become activated in situ. Because synapses were thought to be the sole provenance of neurons, it has been assumed that these receptors must be activated following diffusion of transmitter out of the synaptic cleft, or through nonsynaptic mechanisms such as transporter reversal. Two recent reports show that a ubiquitous class of progenitors that express the proteoglycan NG2 (NG2 cells) engage in rapid signaling with glutamatergic and gamma-aminobutyric acid (GABA)ergic neurons through direct neuron-glia synapses. Quantal release of transmitter from neurons at these sites triggers rapid activation of aminomethylisoxazole propionic acid (AMPA) or GABA(A) receptors in NG2 cells. These currents exhibit properties consistent with direct rather than spillover-mediated transmission, and electron micrographic analyses indicate that nerve terminals containing clusters of synaptic vesicles form discrete junctions with NG2 cell processes. Although activation of AMPA or GABA(A) receptors depolarize NG2 cells, these receptors are more likely to serve as routes for ion flux rather than as current sources for depolarization, because the amplitudes of the synaptic transients are small and the resting membrane potential of NG2 cells is highly negative. The ability of both glutamate and GABA to influence the morphology, physiology, and development of NG2 cells in vitro suggests that this rapid form of signaling may play important roles in adapting the behavior of these cells to the needs of surrounding neurons in vivo.

Effects of a liquid-phase-sintering aid, BaCuO 2 + CuO (BCC), on densification and microwave dielectric properties of (Zr 0.8 Sn 0.2 )TiO 4 (ZST) ceramics have been investigated. The densification kinetics of ZST are greatly enhanced with the presence of 2.5-5 wt% BCC, but become retarded when the amount of BCC increases further. At a given BCC content, moreover, slower densification kinetics are observed with a larger particle size of ZST. The above results are attributed to a chemical reaction taking place at the interface of BCC/ZST during firing. The ZST dissolves into BCC, forming crystalline phases of ZrO 2 , SnO 2 , CuO, and BaTi 8 O 16 which reduce the amount of BCC flux available for liquid-phase sintering. The crystallization kinetics become more significant, compared with densification kinetics, with increasing the amount of BCC and the particle sizes of ZST. For samples with 2.5-5 wt% BCC, a high relative sintered density is obtained at 1000°C and the resulting microwave ceramics have a dielectric constant and a value of Q at 7 GHz in the ranges of 35-38 and 2800-5000, respectively.