Introduction: Use of an adhesive with a suitable composite resin is an important factor in tooth-colored restorations and increasing marginal sealing ability. The aim of this study was to evaluate the microleakage of various adhesives with composite resins using FLUID filtration and dye extraction techniques and assessment of the correlation between these two techniques.Materials and Methods: In this in vitro study, class II cavities were prepared on the proximal surfaces of 48 extracted sound human premolar teeth, measuring 1.5±0.5 mm in gingival width, 4 mm in occluso-gingival height and 1.3 of the inter-cuspal distance in width. The samples were divided into four groups (n=12). Group 1; OptiBond Solo Plus adhesive/Herculite XRV composite resin; Group 2: OptiBond Solo Plus adhesive/Master Dent composite resin; Group 3: Prime & Bond NT adhesive/Herculite XRV composite resin; Group 4: Prime & Bond NT adhesive/Master Dent composite resin. Microleakage was assessed primarily by FLUID filtration and then by dye extraction techniques. Data were analyzed with Kruskal-Wallis and Mann-Whitney tests, with Bonferroni correction and Spearman's rho correlation test at 95% confidence interval.Results: The minimum and maximum mean microleakage values were recorded in FLUID filtration and dye extraction techniques groups 1 and 4, respectively. There were significant differences between the experimental groups in microleakage with the two methods of leakage assessment (p value=0.001). Spearman's rho revealed a strongly direct correlation between the two methods (r=0.797, p value=0.000).Conclusion: In both methods of microleakage assessment, use of ethanol-based in comparison to acetone-based adhesive resulted in microleakage reduction. Application of light-cured composite resin contrary to self-cured composite resin with both types of adhesives increased marginal sealing ability.

Introduction: MTA Fillapex and iRoot SP are two new sealers which have very similar characters to MTA. The purpose of this study was to assess and compare apical seal of the obturated canals with the iRoot SP, MTA Fillapex and AH-Plus sealers.Materials & Methods: Seventy two freshly extracted single root canal human premolars were selected for this study. The canals were instrumented with hand files using step back technique. Six specimens were assigned for positive control and six for negative control groups. The rest of the specimens were randomly divided into three groups of 20 and obturated with gutta percha and one of the aforementioned sealers. Microleakage in all groups was assessed, 2 weeks and 3 months after obturation of canals, by means of FLUID filtration. The data were analyzed using repeated measurement and post-hoc Tukey test. The level of significance was set at P<0.05.Result: In none of the assessment intervals, there was a significant difference between AH-plus and MTA Fillapex. iRoot SP had less microleakage compared to other groups significantly (P<0.001). Microleakage assessments revealed no significant differences between 2 weeks and three months in all groups.Conclusion: iRoot SP sealer had significantly less microleakage compared to MTA Fillapex and AH-Plus.

BACKGROUND: Treatment of hemorrhagic shock is the major problem in emergency surgery. FLUID therapy is one of the first steps but, the conflict has been over the temperature used for the FLUID injected to the patient. The aim of this study was to determine the effect of FLUID temperature in intravenous FLUID resuscitation of hemorrhagic shock. METHODS: In this experimental study, 3 groups of 10 rabbits underwent  emorrhagic shock class III (mean arterial pressure = 40 mmHg) by catheter on femoral artery. Within 25 minutes, ringer lactate solutes with controlled temperatures of 15°C, 25°C and 37°C were injected through femoral venous line. They were followed for 72 hours. RESULTS: In the lowest, middle and the highest FLUID temperature group, mortality rate was 90%, 10% and 40%, respectively. Statistically significant difference was seen between the 15°C and 25°C resuscitation groups (P<0.001). CONCLUSIONS: Our findings showed possible benefit of room temperature as the optimal FLUID temperature for FLUID resuscitation in hemorrhagic shock.

Mixer- settlers are widely used for solvent extraction process in industry. The aims of this project are simulation of FLUID flow and optimizing the operational conditions of settler in solvent extraction process. Designing and meshing of settler geometry is done by Gambit software. Then, in order to simulate the FLUID flow, the meshed designed imported to Ansys Fluent software. Simulation results were verified before simulation. Effect of Inlet volumetric on phase separation investigated. The effect of geometry of picket fences was investigated by the presence of cubic, cylindrical picket fences, picket fences with 5 corner cross section and half cylindrical picket fences. A few extra plates of picket fences were located near the entrance of settler. Phase separation in presence of two and three rows of picket fences investigated. Results indicate that by reducing the inlet volumetric rate, increasing the number of rows, putting extra plates of picket fences in front of entrance and decreasing the closed to open surface ratio to 2, separation improves.

  aIntroduction: Metritis is one of the causes of maternal morbidity and there are many risk factors for it. Because of the importance of possible association of meconium-stained amniotic FLUID and maternal metritis the present study was done to determine whether meconium stained amniotic FLUID (MSAF) is associated with puerperal infection.Methods: In this case-control study 150 women with MSAF and 150 women with clear amniotic FLUID (gestational age > 37 weeks) were compared for puerperal metritis.Results: Subjects’ educational level, gestational age, gravida, mean vaginal exams, route of delivery and mean neonatal weight were not significantly different between the two groups. But mean maternal age and neonatal Apgar were significantly different in the two groups. That is, post partum metritis in women with clear amniotic FLUID occured less than women with MSAF (2.7% vs 10%, P<0.014).Conclusion: Since meconium stained amniotic FLUID is associated with metritis, special care in this regard is recommended.

This paper tries to demonstrate the constantly variable meaning of building despite its fixed physical appearance. This diversity of meaning can be attributed to the social diversity of building users, as well as the change in its functions. The authors employ a semiotic approach to explain the coding system developed in the dialectic relationship between the building as a text and its users as readers.

IntroductionA wide variety of world-class porphyry Cu deposits occur in the Urumieh-Dohktar magmatic arc (UDMA) of Iran.The arc is composed of calcalkaline granitoid rocks, and the ore-hosting porphyry intrusions are dominantly granodiorite to quartz-monzonite (Zarasvandi et al., 2015). It is believed that faults played an important role in the emplacement of intrusions and subsequent porphyry-copper type mineralization (Shahabpour, 1999). Three main centers host the porphyry copper mineralization in the UDMA: (1) Ardestan-SarCheshmeh-Kharestan zone, (2) Saveh-Ardestan district; in the central parts of the UDMA, hosting the Dalli porphyry Cu-Au deposit, and (3) Takab-Mianeh-Qharahdagh- Sabalan zone.