Sprememba volumna sljudastih peščenih tal iz stare delte reke Gediz po likvifakciji

Post-liquefaction settlement characteristics of micaceous sands are not well investigated topic. Currently available charts relating post-liquefaction volumetric strain to relative density were developed for clean sand. Estimation of post-liquefaction settlement of micaceous sands, therefore, may stay on the unsafe side, since there is evidence indicating that mica grains could increase volume change tendency. Influence of mica content on post-liquefaction volumetric strain of sand-mica mixtures is studied in this article. Soil samples were prepared at various relative densities. Influence of fine content that could be present in the field was also investigated on tamped natural field samples recovered from boreholes drilled in a highly populated alluvial site known as the Old Gediz River Delta of Izmir. It was found that increasing mica content at a certain relative density resulted in higher volumetric strains as compared with the data on clean sands. It is deduced that influence of mica grains on sand behavior depends on initial void ratio of sand. Effects of mica grains decrease with increasing of relative density. Simple empirical relationships were derived relating mica content and relative density to volumetric strain. It was also noticed that fine content accelerated and increased post-liquefaction volumetric strains.Posedanje sljudastega peska po likvifakciji ni dovolj raziskano. Trenutno so na voljo preglednice o volumskem raztezku čistega peska po likvifakciji v odvisnosti od relativne gostote. Ocena posedanja sljudastih tal po likvifakciji je zato negotova, ker obstajajo dokazi, da lahko sljudasta zrna povečajo tendenco po spremembi volumna. Članek preučuje vpliv vsebnosti sljude na volumski raztezek zmesi peska in sljude. Pripravili smo vzorce zemljin različne relativne gostote. Preučili so tudi vpliv vsebnosti prahu, ki je lahko prisoten na terenu, v zbitih naravnih vzorcih, pridobljenih na terenu iz vrtin v gosto naseljenem področju stare delte reke Gediz v Izmirju. Ugotovili so, da ima povečanje vsebnosti sljude pri določeni relativni gostoti posledično višji volumski raztezek v primerjavi s čistim peskom. Zaključek je pokazal, da je vpliv sljudastih zrn na obnašanje peska odvisen od začetnega količnika por v pesku. Vpliv zrn sljude se zmanjšuje s povečanjem relativne gostote. Empirično so izpeljali enostavne odnose med vsebnostjo sljude in relativno gostoto ter volumskim raztezkom. Opazili so tudi, da je vsebnost prahu pospešila in povečala volumski raztezek po likvifakciji

Performance functions for laterally loaded single concrete piles in homogeneous clays

A key parameter in the design of a laterally loaded pile is the determination of its performance level. Performance level of a pile is usually expressed as the maximum head deflection and bending moment. In general, uncertainties in the performance of a pile originates from many factors such as inherent variability of soil properties, inadequate soil exploration programs, errors taking place in the determination of soil parameters, limited calculation models as well as uncertainties in loads. This makes it difficult for practicing engineers to decide for the reliability of laterally loaded piles both in cohesive and cohesionless soils. In this paper, limit state functions and consequent performance functions are obtained for single concrete piles to predict the maximum bending moment, a widely accepted design criterion along with the permissible pile head displacement. Analyses were made utilizing three dimensional finite element method and soil-structure-interaction (SSI) effects were accounted for

Large scale constructed wetland implementation projects in Turkey in Salt Lake Special Environmental Protection Area

WOS: 000320503800055Salt Lake, in ecological and economical terms, is one of the most important lakes in Turkey. The lake exhibits great biodiversity of plants because the lake and its basin are a natural habitat to various types of endemic plants which are resistant to a salty environment. The lake also serves as a habitat to many kinds of birds, especially flamingos. From an economic standpoint, Salt Lake meets approximately 70% of the salt requirement for Turkey. For this reason it is of great importance to preserve the natural environment of the lake. In addition to the various activities conducted for the environmental protection of the Salt Lake, a comprehensive constructed wetland (CW) project has been prepared and implemented for the towns of Sultanhani and Altinekin, where the population is expected to reach approximately 5000 by the year 2037. It entails the largest and most important subsurface-flow constructed wetland systems(CWs) in Turkey. Many site surveying research projects have also been conducted to support this detailed CWs engineering project. Each step of the project preparation and application are detailed in this study. A great deal of experience has been gained by Turkey and Mediterranean countries on large scale CWs.TUBITAK Marmara Research Center; Republic of Turkey Ministry of Environment and Forestry Environment Protection Agency for Special AreasThe authors would like to thank to TUBITAK Marmara Research Center and the Republic of Turkey Ministry of Environment and Forestry Environment Protection Agency for Special Areas for their financial support and encouragements

EROSS study: effect of ovarian reserve on sexual satisfaction

The population of this multicenter prospective cohort study comprised 180 women. Women who were admitted to the gynaecology department with any symptoms aged 18–40 years, whose ovarian reserve was tested, were prospectively enrolled in the study. The Female Sexual Function Index (FSFI) survey was administered to all patients. Demographic parameters (age, body mass index), ovarian reserve tests and FSFI scores were analysed. FSFI scores were compared between the patients with diminished ovarian reserve (DOR) and normal ovarian reserve (NOR). Mean women age was 30.8 ± 5.1 years. Median (with quartiles) AFC was 15 (10–20) and anti-mullerian hormone (AMH) was 2.6 (1.3–4.3) ng/mL. Mean FSFI score was 27 ± 4.7. The FSFI score was positively correlated with AMH and AFC and negatively correlated with women age. FSFI score depending on ovarian reserve were; 24.7 ± 5.2 vs. 27.4 ± 4.3, p < .01 (Respectively; DOR group (n = 43) vs. NOR group (n = 132)). Threshold value for AMH to predict sexual hypofunction was 2.32 with 67% sensitivity – 62% specificity (AUC: 0.68 p < .01) and for AFC to predict sexual hypofunction was 15 with 65% sensitivity – 60% specificity (AUC: 0.67 p < .01). In conclusion, the ovarian reserve should be considered in reproductive aged women while assessing the exact aetiology of female sexual dysfunction. IMPACT STATEMENT What is already known on this subject? Sexual dysfunction is a common disorder and negatively affects the life quality of women. Its estimated prevalence is 40% in women worldwide. There are still unknown aetiologies for sexual dysfunction. What do the results of this study add? The female sexual function index is positively correlated with ovarian reserve. Decreasing sexual functions is related to decreased ovarian reserve. Lower AMH than 2.32 ng/dl and lower antral follicle count than 15 are associated with sexual hypofunction. What are the implications of these findings for clinical practice and/or further research? This pilot study showed the relationship between sexual functions and ovarian reserve. In daily practice, the ovarian reserve should be considered in reproductive-aged women while assessing the exact aetiology of the sexual dysfunction. TRIAL REGISTRATION NUMBER NCT04776902 Clinical Trial

Large scale constructed wetland implementation projects in Turkey in Salt Lake Special Environmental Protection Area

Salt Lake, in ecological and economical terms, is one of the most important lakes in Turkey. The lake exhibits great biodiversity of plants because the lake and its basin are a natural habitat to various types of endemic plants which are resistant to a salty environment. The lake also serves as a habitat to many kinds of birds, especially flamingos. From an economic standpoint, Salt Lake meets approximately 70% of the salt requirement for Turkey. For this reason it is of great importance to preserve the natural environment of the lake. In addition to the various activities conducted for the environmental protection of the Salt Lake, a comprehensive constructed wetland (CW) project has been prepared and implemented for the towns of Sultanhani and Altinekin, where the population is expected to reach approximately 5000 by the year 2037. It entails the largest and most important subsurface-flow constructed wetland systems(CWs) in Turkey. Many site surveying research projects have also been conducted to support this detailed CWs engineering project. Each step of the project preparation and application are detailed in this study. A great deal of experience has been gained by Turkey and Mediterranean countries on large scale CWs

The prevalence of childhood psychopathology in Turkey: a cross-sectional multicenter nationwide study (EPICPAT-T)

Conclusion: This is the largest and most comprehensive epidemiological study to determine the prevalence of psychopathologies in children and adolescents in Turkey. Our results partly higher than, and partly comparable to previous national and international studies. It also contributes to the literature by determining the independent predictors of psychopathologies in this age group

The prevalence of childhood psychopathology in Turkey: a cross-sectional multicenter nationwide study (EPICPAT-T).

Aim: The aim of this study was to determine the prevalence of childhood psychopathologies in Turkey