Dynamic model with factors of polycystic ovarian syndrome in infertile women

Background: Previous studies present various methods for prediction disease based on statistics or neural networks.These models use statistics and results from past procedures to provide prediction through probability analysis. Objective: In this article, the authors present a dynamic model aiming at predicting the treatment result of infertile women with the factor of polycystic ovary syndrome. Materials and Methods: For this purpose, the authors have divided the study population into five groups: women prone to infertility, PCOS women, infertile women undergoing the treatment with Clomiphene Citrate and Gonadotropin, infertile women under IVF treatment, and improved infertile women. Therefore, the authors modeled the disease in infertile women mathematically and indicated that the free equilibrium point was asymptotically stable. Also the possibility of other equilibrium point of the system has been studied. Results: The authors showed that this equilibrium point was marginally stable. Using Stoke’s Theorem, the authors proved that the recurrence of the disease cycle with the factor of polycystic ovary syndrome was not intermittent in infertile women. They solved this model numerically using Rung-Kutta method and sketched the figures of the resulted solutions. Conclusion: It shows that with increasing age, the ovarian reserve is decreased and the treatment Clomiphene Citrate and Gonadotropin are not responsive, so IVF treatment is recommended in this group of patients considering the graphs of the model

Corrigendum to “Comparison of conventional IVF versus ICSI in non-male factor, normoresponder patients” [Iran J Reprod Med 2012; 10: 131-136]

This article is a corrigendum to "Comparison of conventional IVF versus ICSI in non-male factor, normoresponder patients” [Iran J Reprod Med 2012; 10: 131–136]. Please download the PDF or view the article HTML.&nbsp

Immobilization of protease in biopolymers (mixture of alginate-chitosan)

      The Protease enzyme breaks down protein into amino acids as its constructors. Protease immobilization onto appropriate support materials plays an essential role in various fields of technology including the food and detergent industries. Accordingly, improvement of protease immobilization has been highly regarded due to its applications in bio catalysis. Alginate and chitosan are natural polysaccharides that have been studied so extensively in enzyme immobilization.In this research, the physical immobilization of proteases in alginate-chitosan beads showed satisfactory activity and stability. These beads were prepared by adding protease-alginate dropping intoChitosan­ and Calcium chloride solution. Then proteases enzyme encapsulated in alginate-chitosan beads. In the end, the different conditions such as temperature, pH and stability of the enzyme were studied.  The immobilized protease was optimized in temperature of 47°C and at pH 8.5. The results demonstrated that the protease enzyme immobilized in alginate-chitosan beads exhibits reasonable stability and good activity.

Investigating the Relationship between Early Maladaptive Schemas and Quality of Life with Mediating Religious Commitment in Isfahan Women

The purpose of this study was to investigate the relationship between primary maladaptive schemas and quality of life with mediation of religious commitment in Isfahan women. This descriptive-analytic study was carried out using correlation method of path analysis. The subjects in this study were 200 people who were selected by random sampling method. They responded to the Stenberg Love Triangle Questionnaire (1994), the Vertigton and Associates Religious Commitment Test (2003), and the Gender Scheme for Men and Women (Andersen et al., 1999). To analyze the data, in addition to descriptive (mean and standard deviation), correlation coefficient and path analysis using AMOS-16 software were used for fitting the hypothesized model. The results of this study showed that there is a significant negative relationship between the initial maladaptive schema and religious commitment (both internal commitment and intermediate commitment), and also there is a significant negative relationship between the subscales of the initial maladaptive schema and quality of life. The results also showed that religious commitment affects the negative relationship between early maladaptive schemas and quality of life, and in this case, it plays a mediating role. According to the results of this study, it is concluded that there is a significant negative relationship between the early maladaptive schemas and the quality of life. Religious commitment plays a mediating role, and it affects the negative relationship between these two variables

A bizarre presentation of Peutz – jegher’s syndrome in a 2 year old

Peutz - jegher’s syndrome (PJS) is a rare autosomal dominant disorder with gastro intestinal and mucosal pigmentations. We present a 2 y/o boy with a lesion prolapsing from his rectum that could not be reducted. We found him to have PJS and a familial history of PJS in his parents

Influence of different sodium-based additives on corrosion resistance of PEO coatings on pure Ti

In the present study, the plasma electrolytic oxidation method was used to form ceramic coatings on pure Ti substrates. For this purpose, five different aluminate-based electrolytes containing various sodium-based additives (sodium hydroxide, sodium phosphate, sodium silicate, sodium tetraborate and sodium fluoride) were used. The role of additives in the growth, macrostructure, surface and cross-sectional microstructure, phase composition and corrosion resistance of the coatings was evaluated. An X-ray diffractometer and scanning electron microscope were used to study the microstructure and phase composition of the coatings, respectively. The corrosion resistance of the coatings was investigated by applying electrochemical impedance spectroscopy and potentiodynamic polarization tests in a 3.5 wt. % NaCl solution. The results revealed that use of a sodium phosphate additive led to formation of a coating (4.33 µm thick) with the most suitable microstructure and highest corrosion resistance (4.36 × 106 Ω cm2), which was 53 times higher than that of uncoated Ti

Comparing individual and peer education on the constructs of theory of planned behavior in mammography

INTRODUCTION: Breast cancer is the most common cancer in women. It can be diagnosed in the first stage by screening. One of the methods for screening breast cancer is mammography. Mammography as a health behavior needs education. The theory of planned behavior examines the factors associated with the behavior. AIM: This research was conducted to compare the individual and peer education on the constructs of the theory of planned behavior in mammography. METHODS: This study was a clinical trial. A total of 100 women who attending the selected health centers of Isfahan city were classified randomly into two groups: peer and individual education. Education was based on the constructs of the theory of planned behavior (attitude relative to the mammography behavior, subjective norms, perceived behavioral control, and behavioral intention). The data were collected using a researcher-made questionnaire. Data were analyzed using descriptive-analytical statistics. RESULTS: The mean score of attitude toward behavior in the individual education group was significantly higher than peer education (P 0.05). DISCUSSION: The results of this study showed the effectiveness of education (individual and peer) based on the theory of planned behavior on attitude toward behavior, subjective norms, perceived behavioral control, and behavioral intention related to performing mammography in women. It seems that using educational intervention can be useful to promote the screening behaviors of breast cancer. In general, there were no significant differences between the two methods in changing theoretical constructs

Assessing the wear properties of plasma electrolytic oxidation TiO2 coatings incorporated ZrO2 nanoparticles on Cp-Ti in simulated body fluid

TiO2 oxide coatings incorporated ZrO2 nanoparticles were prepared on Cp-Ti using the plasma electrolytic oxidation (PEO) process in electrolyte solutions containing dispersed ZrO2 nanoparticles. The coatings’ microstructure, roughness, and composition were characterized using scanning electron microscopy (SEM), roughness profilometry, and X-ray diffractometry (XRD) analyses, respectively. The coatings’ friction and wear characteristics were examined using a ball-on-disk sliding test in a simulated body fluid (SBF) electrolyte. The as-prepared oxide coatings had a rough and porous surface structure, primarily consisting of rutile and/or anatase TiO2, tetragonal ZrO2, and ZrTiO4. ZrO2 nanoparticles were incorporated into the TiO2 coating layers and were found on the surface or in the pores. The wear and friction behavior of the oxide coatings were influenced by the quantity of ZrO2 nanoparticles (1 g/L, 3 g/L, and 5 g/L) in the electrolyte solution. The wear resistance of coatings improved by decreasing the wear rate by about 8 % (from 2.31 × 10−6 mm3/Nm to 2.11 × 10−6 mm3/Nm) when the ZrO2 nanoparticles concentration in the electrolyte solution rose from 1 g/L to 5 g/L, because of the formation of more of harder ZrO2 and ZrTiO4 phases in the coatings