fatemeh ghodsi

In recent years, we are constantly facing the increase of Internet of Things devices in the fields of health, agriculture, industry and other applications. The using of these networks will increase by improving the quality of service. Usually, data are generated heterogeneously by IoT’s sensors at different times with   different sizes and priorities, and none of previous works in this field do not consider all these modes together; on the other hand, these studies either have worked on the queue model and priority package selection, or on the channel access methods and its prioritization. Therefore, in our proposed model in this paper, with the aim of improving quality of service, thight scheduling of delay-sensitive packets, and also avoiding starvation for lower priority packets, we consider an architecture including two levels of prioritization. In the first level, the packet is selected for sending based on a type of dynamic prioritization and relative to its delay deadline field. Since in this paper the application of Internet of Things in health care is considered, the sensors generate data both of modes, periodically (fixed) and on demand (critical), and therefore, two queue models D /G/1 and M/G/1 are used. In addition, the second level includes channel prioritization. At this level, by using a control channel and setting the waiting time of the sending node for listening to the channel, we have sending the packet through the control channel. Furthermore, a consolidated channel hopping model has been used for nodes to use the available bandwidth. Also, a buffer to keep the information of the last connection of the node helps to send and receive faster with less number of switching. After simulating and comparing this model with the 802.11 standard and similar media access protocols, significant improvements in increasing the packet delivery rate, operational throughput, and also reducing the end-to-end delay are showed.

More than half of the population of women suffer from cyclic mastalgia which can interfere with women’s sexual function and affect their sexual satisfaction. The current study was conducted to determine the effect of sexual counseling on sexual satisfaction in women with cyclic mastalgia.

This randomized controlled trial study was performed on 81 women with cyclic mastalgia. The subjects were randomly divided into two groups of intervention (n = 40) and control (n = 41). Intervention was performed as Permission, Limited information, Specific suggestions, Intensive therapy (PLISSIT) sex counseling in four sessions for a maximum of 90 min in the intervention group. The demographic checklist and Index of Sexual Satisfaction (ISS) were used for data collection. Follow‑up was performed 1 and 3 months after the intervention. The obtained data were analyzed using repeated‑measures test.

The intervention and control groups were in good balance in terms of demographic characteristics and sexual satisfaction scores prior to the intervention and no statistically significant differences were observed. There was a statistically significant increase in the mean (SD) score of female sexual satisfaction in the intervention group: 93 (12.52), 101.15 (7.70),101.37 (5.31), (F(1,39) = 27.4, p < 0.001). We also observed a decrease in the mean (SD) score of sexual satisfaction in the control group: 93.39 (13.12), 90.68 (8.41), 90.85 (6.57), (F (1,40) = 11.9, p < 0.001) 1 and 3 months following the intervention.

This study revealed that individual counseling by PLISSIT sex counseling could lead to improvement in sexual satisfaction index in women with cyclic breast pain.

Despite the high prevalence of cyclic mastalgia, there is much disagreement and uncertainties about its treatment methods. The present study aims to review studies conducted on cyclic mastalgia over the past two decades in Iran. In this regard, a search was conducted in Scopus, SID, PubMed, Google Scholar, ScienceDirect, and IranMedex databases on articles published in Persian and English from 1998 to 2018 using the following keywords: “Mastalgia”, “cyclic mastalgia”, “breast pain”, and “Mastodynia”. Initial search yielded 975 articles. Of these, 29 were selected for review based on inclusion criteria; 19 interventional and 10 non-interventional. Based on the results, most studies reported a mastalgia prevalence of about 30% in Iran. The most common age for cyclic mastalgia was 30 years. In most studies, a significant relationship between premenstrual syndrome and cyclic mastalgia was reported. The use of vitamins and herbal plants were the most common interventions for cyclic mastalgia, while counseling was the least common type. It seems that cyclic mastalgia affects the sleep quality and physical and sexual activities. Due to the high prevalence of cyclic mastalgia reported in various studies in Iran, and the lack a same treatment protocol, further study on cyclic mastalgia is recommended.

This study evaluated the kinetics of mitoxantrone (MTX) releases from Fe3O4-PEG-HA NPs as a drug delivery system in the presence of sodium citrate buffer (pH=5.0) into a dialysis bags at 37 °C using both the UV-vis spectrophotometry technique and statistical patterns. The formal empirical absorbance plot (dotted line) against time was properly fitted by the first-order fitting plot.  To ascertain the best fitted model recognition of character in drug liberation, we calculated several statistical quantities as error standard functions. The release of MTX from the titled was considered with respect to the statistical kinetic patterns of Ritger-Peppas, Sahlin-Peppas, first-order kinetics, Higuchi, and Hixson-Crowell equations. According to the correlation constraint R2 value that emerged from statistical patterns, the first-order model was found as a more comprehensive description than the other patterns for chemical kinetics in drug liberation and the rate of drug release depends on drug concentration.