EFFECTS OF POLY-ALUMINUM CHLORIDE, STARCH , ALUM AND ROSIN ON THE ROSIN SIZING, STRENGTH AND MICROSCOPIC APPEARANCE OF PAPER PREPARED FROM OLD CORRUGATED CONTAINER (OCC) PULP

The influence of rosin (0.1-0.3%), alum (0.4-0.6%), polyaluminum chloride (0.3-0.7%), and starch (0.5-1.5%) in the making of paper from old corrugated container (OCC) pulp on the freeness, breaking length, tear index, and burst index of pulp and paper sheets was studied. Using a full factorial design to identify the optimum operating conditions, equations relating the dependent variables to the operational variables of the chemical additives were derived that reproduced the former with errors lower than 5%. Using a high starch (1.5%), high PAC (0.7%), low alum (0.4%), and low rosin (0.1%) combination led to pulp that was sufficient to obtain paper with good strength properties (breaking length 5720m; burst index: 3.1 kPam2g-1; tear index: 6.2mNm2/g; Cobb test: 94; fold endurance: 1.52) SEM analysis show increasing in bonding between fibers together at this level of additives. The influence of starch on Cobb test values was not significant

Validity and reliability of the multidimensional health locus of control scale for college students

<p>Abstract</p> <p>Background</p> <p>The purpose of the present study was to assess the validity and reliability of Form A of Multidimensional Health Locus of Control scales in Iran. Health locus of control is one of the most widely measured parameters of health belief for the planning of health education programs.</p> <p>Methods</p> <p>496 university students participated in this study. The reliability coefficients were calculated in three different methods: test-retest, parallel forms and Cronbach alpha. In order to survey validity of the scale we used three methods including content validity, concurrent validity and construct validity.</p> <p>Results</p> <p>We established the content validity of the Persian translation by translating (and then back-translating) each item from the English version into the Persian version. The concurrent validity of the questionnaire, as measured by Levenson's IPC scale was .57 (P < .001), .49 (P < .01) and .53 (P < .001) for IPC, respectively. Exploratory principal components analysis supported a three-factor structure that items loading adequately on each factor. Moreover, the approximate orthogonal of the dimensions were obtained through correlation analyses. In addition, the reliability results were acceptable, too.</p> <p>Conclusion</p> <p>The results showed that the reliability and validity of Persian Form A of MHLC was acceptable and respectable and is suggested as an applicable criterion for similar studies in Iran.</p

Validity and Reliability Of Defens Style Questionaire (DSQ-40) in Iranian Samples

This study has examined defense styles in Iranian samples with psychometric properties Defens Style Questionaaire(DSQ-40). 1067 subjects are (666 high school students , age mean:16.61 SD :1.13 and 401 university students , age mean:21.3 ,SD : 3.8, 527 female, 540 male) that participated in this investigation. Internal consistency, concurrent validity , content validity , test-retest and cronbach α in Defense Style Questionaaire for Iraninan sample were computed. Results showed appears the DSQ-40 to be a reliable(α = /81-/87)and valid instrument (Its properties concerning content validity, concurrent validity and construct validity)for Iraninan sample

COMPARATIVE STUDY OF PULP AND PAPER PROPERTIES OF CANOLA STALKS PREPARED BY USING DIMETHYL FORMAMIDE OR DIETHYLENE GLYCOL

Comparision between pulping of canola stalks with dimethyl formamide and diethylene glycol was studied in order to investigate the effects of cooking temperature (190˚C, 210˚C, and 230˚C), cooking time (120 min, 150 min, and 180 min) and dimethyl formamide or diethylene glycol (50%, 60%, and 70%) on the properties of pulp and paper. SCAN viscosity was applied to estimate the extent of cellulose degradation. Responses of pulp and handsheet properties to the process were analyzed using statistical software (MINITAB 15). The results showed that DMF pulp of canola was better than DEG pulp of Canola under the same conditions of cooking and organosolv ratio. In DMF pulping and DEG pulping, cooking temperature is a significant factor affecting paper properties. Analysis of results revealed that DMF pulp canola obtained at 230 °C, 180 min, and 70% DMF had a low kappa number (25) , indicating that the desired properties of the final product dictated the optimized pulping conditions

Sexual Dysfunctional Beliefs Questionnaire (SDBQ): Translation and Psychometric Properties of the Iranian Version

Introduction: The sexual dysfunctional beliefs questionnaire (SDBQ) is a validated measure for assessing dysfunctional sexual beliefs. Aims: The aim of this study was to translate and validate the SDBQ to Iranian context. Methods: In order to translate the questionnaire from English into Persian, a forward-backward procedure was applied. After linguistic validation, the psychometric properties of the Iranian version were assessed for both men and women. A total of 387 participants (226 women and 161 men) completed the SDBQ. Main Outcome Measures: A principle component analysis with varimax rotation was performed for both the male and female samples. Reliability was evaluated by calculating Cronbach's alpha (internal consistency) and test-retest coefficients (intraclass correlation coefficient). Results: The results from the principle component analysis identified six factors in the female version: sexual conservatism and female sexual passivity, beliefs about masturbation, body image beliefs, sexual desire and pleasure as a sin, age-related beliefs, and denying affection primacy. In the male version six factors were also identified: sex as an abuse of men's power, beliefs related to women's satisfaction, sexual conservatism, female sexual power, "macho" beliefs, and restrictive attitudes toward sex. Findings support the original six-factor solution for the male sample. For the female sample, although a six-factor solution was found, original motherhood-related beliefs were included in the sexual conservatism and female sexual passivity factor, and a new dimension has emerged, related to masturbation beliefs. Additionally, results indicated that the SDBQ had good internal consistency and test-retest reliability in both male and female versions. Conclusion: Current findings support the reliability and validity of the SDBQ in an Iranian sample and suggest its applicability to assess sexual beliefs in both clinical samples and the general population in Iran. © 2015 International Society for Sexual Medicine

Psychometric properties of the Iranian version of the Sexual Modes Questionnaire (SMQ): to assess the association between automatic thoughts, emotions and sexual response

© 2016 College of Sexual and Relationship Therapists. The role of cognitive-affective factors on male and female sexual functioning has been studied in North America and European countries and there is a lack of validated measures available for use elsewhere. The aim of this study was to translate and validate the Sexual Modes Questionnaire (SMQ) to the Iranian context. The SMQ is a validated measure aimed at assessing the association between thoughts, emotions and sexual respon se during sexual activity. A total of 388 participants (224 women and 164 men) completed the SMQ. A principal component analysis with varimax rotation and subsequent confirmatory factor analysis (CFA) were performed. Three factors were identified in the male version: Failure Anticipation Thoughts, Erection Concern Thoughts, and Lack of Erotic Thoughts. In the female version, six factors were identified: Failure and Disengagement Thoughts, Low Self-Body Image Thoughts, Sexual Abuse Thoughts, Sexual Passivity and Control, Lack of Erotic Thoughts, and Partner's Lack of Affection. Also, a consistent pattern of correlations was found between the three subscales of the SMQ (thoughts, emotions, and sexual response) supporting the interactional character of the measure. This study has provided some preliminary evidence of the reliability and validity of the SMQ for use in Iranian populations