Accuracy Evaluation of Real-Time GNSS Survey Observations

Real time networks (RTNs) have become popular for Global Navigation Satellite System (GNSS) surveys because highly accurate positions can be derived in seconds to minutes compared to hours as required with static sessions. To evaluate the accuracy of these shorter-duration, RTN GNSS observations and their potential for use as a source for establishing geodetic control, data collected from two National Geodetic Survey (NGS) surveys in South Carolina and Oregon were studied in detail. This case study explores the horizontal and vertical accuracy of real-time observations as a function of observation duration, examines the influence of the inclusion of Globalnaya Navigazionnaya Sputnikovaya Sistema (GLONASS) observables, compares results from real-time kinematic (RTK) positioning using a single base station versus a network of base stations, and assesses the effect of baseline length on accuracy. Thirty-eight passive marks were repeatedly observed with GNSS using a RTN in the two study areas for a variety of different observation time durations, ranging from 5 seconds to 15 minutes. An optimal real-time observation duration was found in the range of 180 to 300 seconds. The real-time data acquired using a network of base stations tended to be more accurate and precise than single-base RTK data. Further, the addition of GLONASS observables helped obtain more fixed solutions at longer baseline lengths than solutions based solely on GPS observables as well as showed a very slight improvement in accuracy, particularly for stations with poorer satellite visibility

A study on religious values

This study aims to evaluate and to compare the adherence rate of religious values between the two ethnic groups of Turkish and Kurdish who live in West Azerbaijan province. The study designs a questionnaire in Likert scale, low, medium and high, and distributes it among a sample of 200 people who live in these two regions. The result of our survey indicates that Azeri people were more religious than Kurdish people were. In addition, the study investigates the relationship between personal characteristics including age, gender and marital status and adherence rate of religious values and detects some meaningful relationships between these two items

Application of 3D Printing in Pharmaceutical Sciences, and Evaluation of Administration Routes for Drug-Loaded Composites

3D printing is a novel approach in the pharmaceutical field, but its usage has not been fully established. This method can promote drug therapy and overcome some traditional treatment challenges in different ways that are discussed in this paper. "One-size-fits-all", Large-scale production, and less patient and physician acceptability are some limitations that we will encounter in traditional therapy. Three-dimensional printing of pharmaceutical products is a versatile technology that needs specific attention. Droplet-based, extrusion-based, and laser-assisted 3D printers are three main techniques that can be used in this field. The limitations and advantages of this method have been discussed, highlighting potential innovative pathways towards the possibility of drug carriers’ usage in ink formulas. The administration pathway of drug-loaded composites is another critical issue in drug treatment strategies that have been discussed here. Oral drug delivery as a convenient method of systemic drug administration with significant patient preference is introduced as the most prevalent pathway that has been studied about 3D printed medicines. Finally, essential ethics and future directions of 3D printing in the pharmaceutical and healthcare industries are outlined

Breast cancer and dietary fat quality indices in Iranian women: A case–control study

BackgroundThe association between breast cancer (BC) and different indices of dietary fats has not been well-studied. Thus, this study aimed to investigate the association between BC and dietary fat quality (DFQ) indices in Iranian women.MethodsThis case–control study was conducted on 120 women with breast cancer and 240 healthy women in Tehran, Iran. Food Frequency Questionnaire and nutritionist IV software were used to assess the intake of dietary fats and to calculate the DFQ indices.ResultsThe patients with BC had a higher total fat (TF) (P < 0.01) and a lower ratio of polyunsaturated fatty acids (PUFAs) omega-3 to PUFAs omega-6 (ω-3/ω-6) compared with the controls (P < 0.001). TF had a significant association with BC risk (OR: 1.16; 95% CI: 1.01–1.33, P < 0.001). No significant association was found between BC and PUFA/saturated fatty acid ratio or the ω-3/ω-6 ratio.ConclusionThe patients with BC had a lower ω-3/ω-6 ratio and a higher total dietary fat intake than the healthy women. Total dietary fat intake was also directly associated with the risk of BC. Thus, low-fat diets may have beneficial effects for BC prevention. Further longitudinal studies are warranted

A social work study on measuring adherence to religious values

This study aims to investigate the effects of demographic characteristics, including gender, marital status, level of education and age on adherence to religious values among young people in city of Shahin Dezh and Takab, located in province of West Azerbaijan, Iran in 2014. The study has accomplished between two groups of Turk and Kurd with the population of 85,000 and 89,000, respectively. The study uses a sample of 20 and 30 people from Turkish and Kurdish tribes, respectively, and uses t-student test as well as regression analysis to examine different hypotheses of the survey. The results show that there was a meaningful difference among various variables of gender, marital status, education level and age in adherence to religious values among the youth who live in this city