جستجوی مقالات مرتبط با کلیدواژه "pen" در نشریات گروه "پزشکی"

As much as the women`s behavior for the premature diagnosis of the breast cancer is affected by the cultural and social factors, the purpose of this study is to investigate factors associated with screening accordance with the model PEN-3. The present study was cross-sectional. The samples studied were women above 20 years and the sample size was 1416 people. The method of sampling was a random cluster. The tools of data collection questionnaire with 70 questions which approved its content validity and reliability. Data were analyzed by using software of SPSS Ver. 20. The average age of samples was 35.71±6.1. Only 14.3% of samples are regularly conducted to the self-examination. Also, 38.5% of women had a history of the clinical examination. The difference of observed in performance the breast self-examination and clinical breast examination were the statistical significant by variables of rural or urban (P= 0.005), the marital status (P = 0.013) and a background of having breast cancer (P <0.001). The results of the study based on PEN-3 model were showed that there were a statistical significant relationship between the structure of perceptual factors and reinforcing factors (P=0.002) and between the perceptual factors and enabling factors (P=0.006). According to the results of presented, the women`s performance in using the screening was low. Also, the components status of the PEN-3 Model (factors of perceptual, enabling, and reinforcing) for the breast cancer screening in women studied were not suitable.

Of the ways to fight breast cancer and reduce deaths hazard due to early detection is one of early detection programs in women’s breast self- examination. Examining breast by oneself increase individuals knowledge of her breast health that helps in detecting breast cancer early. Different cultural, social, family and individual factors play roles in women’s behavior about breast self- examination applying PEN-3 model in this study is to analyze factors influencing on breast self-examination. The research is a descriptive- analytical, cross-sectional type. Research community consists of women at fertility age of 20-49 in sari. Sample volume is 415 individuals and sampling method is cluster method. In this study, a 50-item questionnaire based on PEN-3 was used. Avestions were answered by Likert scoring method. Questionnaire was gathered by personal presence of questioners. Data was analyzed via descriptive statistics and logistic regression methods. Based on the study findings, the most significant positive behaviors related to perceptual factors included effectiveness of disease background in family and relatives (73%), believing in breast self- examination for pursuing health (93%) and the most important negative behaviors were shyness and modesty (83.9%) and increased worry (78.9%). The most remarkable positive behaviors regarding enabling factors covered the skill to do breast examination oneself (35.2%), the availability of health and therapeutic centers (80.7%) and the most significant negative behavior was being busy and lack of time (85.3%). The most important positive behavior about nurturing factors included family consent (68.9%) and the most significant negative one was the inappropriate treatment of health andtherapeutic personnel (61.8%). In this study, there is a meaningful difference between employment ages, education with PEN-3 model constituents. Since behaviors due to enabling and nurturing perceptual factors have been important in doing or not doing breast self- examination; thus its worth to take measures to plan some educational and administrative intervention programs about women breast cancer early detection through sufficient knowledge of influential sociocultural factors.

The bond strength of resin cements to metal alloys depends on the type of the metal, conditioning methods and the adhesive resins used. The purpose of this study was to evaluate the bond strength of resin cements to base and noble metal alloys after sand blasting or application of silano-pen. Cylinders of light cured Z 250 composite were cemented to “Degubond 4” (Au Pd) and “Verabond” (Ni Cr) alloys by either RelyX Unicem or Panavia F2, after sandblasting or treating the alloys with Silano-Pen. The shear bond strengths were evaluated. Data were analyzed by three-way ANOVA and t tests at a significance level of P<0.05. When the alloys were treated by Silano-Pen, RelyX Unicem showed a higher bond strength for Degubond 4 (P=0.021) and Verabond (P< 0.001). No significant difference was observed in the bond strength of Panavia F2 to the alloys after either of surface treatments, Degubond 4 (P=0.291) and Verabond (P=0.899).Panavia F2 showed a higher bond strength to sandblasted Verabond compared to RelyX Unicem (P=0.003). The bond strength of RelyX Unicem was significantly higher to Silano-Pen treated Verabond (P=0.011). The bond strength of the cements to sandblasted Degubond 4 showed no significant difference (P=0.59). RelyX Unicem had a higher bond strength to Silano-Pen treated Degubond 4 (P=0.035). The bond strength of resin cements to Verabond alloy was significantly higher than Degubond 4. RelyX Unicem had a higher bond strength to Silano-Pen treated alloys. Surface treatments of the alloys did not affect the bond strength of Panavia F2.