Assessment of economic, energy, and exergy efficiencies using wind measurement mast data for different wind turbines.

Today, increasing concerns about greenhouse gas emissions, climate change, and resource depletion from fossil fuels have drawn attention to wind energy. In this context, wind turbine technologies are constantly evolving to eliminate such concerns by using wind energy. The wind speed from the measurement mast at a height of 80 m was used in wind turbines of different capacities and was investigated. To assess the potential of the system that produces electricity from wind energy, it has been analyzed in terms of energy, exergy, and economic. The energy and exergy efficiencies of each wind turbine were analyzed with the wind speed and meteorological data. When the average monthly power calculated for each turbine is proportioned to the turbine capacity, the energy efficiency varies between 10 and 70%. Enercon_1500 and Enercon_3050 values are high, while Enercon_3500 and Enercon_2350 have low efficiency compared to other turbines. The annual total energy production is 12.19 GWh for the highest Enercon_4200 and 4.48 GWh for the lowest Enercon_1500. The exergy efficiencies range from 20 to 79% for selected wind turbines. In the last part of the study, monthly average electricity production costs were determined by using the turbines selected for the determined region. When compared in terms of unit electricity cost, the Enercon_1500 turbine is higher, while the Enercon_4200 is lower.

Comparison of anti-spike IgG, anti-spike IgA levels and neutralizing antibody activity induced by CoronaVac and BNT162b2 vaccines in patients with inflammatory rheumatic diseases receiving immunosuppressive therapy.

BACKGROUND: The importance of COVID-19 vaccination for patients on immunosuppressive (IS) medication has increased due to the high risk of severe disease or mortality. Different vaccines have varying efficacy rates against symptomatic COVID-19, ranging from 46.8% to 95%. The objective of this study was to examine the differences in anti-Spike IgG, anti-Spike IgA, and neutralizing antibody (NAb) activity between the inactive CoronaVac vaccine and the mRNA-based BNT162b2 vaccine in IS patients. METHOD: A total of 441 volunteers, including 104 IS patients, 263 healthy controls (HC), who received two doses of CoronaVac or BNT162b2, and 74 unvaccinated patients with a history of SARS-CoV-2 infection, were included in the study. Anti-spike IgG, IgA, and NAb activity were investigated. RESULTS: Immunogenicity with BNT162b2 was higher than with CoronaVac, but in IS groups, it was lower than HC (CoronaVac-IS: 79.3%, CoronaVac-HC: 96.5%, p < 0.001; BNT162b2-IS: 91.3%, BNT162b2-HC: 100%, p = 0.005). With CoronaVac, anti-Spike IgG levels were significantly lower than BNT162b2 (CoronaVac-IS: 234.5AU/mL, CoronaVac-HC: 457.85AU/mL; BNT162b2-IS: 5311.2AU/mL, BNT162b2-HC: 8842.8AU/mL). NAb activity in the BNT162b2 group was significantly higher. NAb and anti-Spike IgG levels were found to be correlated. Among the IS group, a significantly lower response to the vaccines was observed when using rituximab. IgA levels were found to be lower with CoronaVac. CONCLUSIONS: Although immunogenicity was lower in IS patients, an acceptable response was obtained with both vaccines, and significantly higher anti-Spike IgG, anti-Spike IgA, and NAb activity levels were obtained with BNT162b2.

Comparison of eight methods of Weibull distribution for determining the best-fit distribution parameters with wind data measured from the met-mast.

In order to assess the wind characteristics of a specified region, a pre-analysis of the region can be made with different numerical methods. For instance, the two-parameter Weibull distribution is widely used in wind energy studies and the wind energy sector to obtain information about the wind characteristics of the specified region. The main goal of this study is to perform a detailed analysis of the data obtained from the wind measurement sensors on a meteorological mast with a height of 80 m to determine the wind characteristics and wind energy potential of a region in Osmaniye, Turkey. The suitability of the two-parameter Weibull distribution, which is the most popular probability distribution model, was investigated to evaluate the distribution of these wind data. In the precise determination of the Weibull distribution parameters (k and c), the suitability of eight different numerical methods, namely, graphical (GM), empirical of Justus (EMJ), empirical of Lysen (EML), power density (PDM), moment (MoM), maximum likelihood (MLM), modified maximum likelihood (MMLM), and alternative maximum likelihood (AMLM) methods, was examined. Root-mean-square error (RMSE), chi-square (X2), and analysis of variance (R2) were used to compare and verify the performance of these models. The best and worst performances in these eight methods were MMLM and GM, compared with the actual measured data. Also, wind power density was calculated considering these methods and prevailing wind directions.

Associations between anemia and insomnia or excessive daytime sleepiness in older adults.

OBJECTIVE: Sleep disorders including excessive daytime sleepiness (EDS), insomnia and anemia are both common. The aim of this study is to investigate associations between anemia and insomnia/EDS in the elderly. METHODS: A total of 744 older outpatients were included in this cross-sectional study. Anemia was defined as a hemoglobin concentration below 12 g/dL in females and <13 g/dl in males. Patients were divided into two groups as anemic and non-anemic. The Epworth Sleepiness Scale score of ≥11 points indicates EDS. Insomnia Severity Index with scores of ≥8 indicates insomnia. RESULTS: The mean age was 79.8±7.7 years. The prevalence of insomnia, EDS and anemia was 62.1%, 23.8%, and 47.2%, respectively. Insomnia (66.3% vs 58.5%) and EDS (29.6% vs 18.6%) were more common in patients with anemia compared to those without anemia (p<0.05). In univariate analysis, there were significant associations between anemia and insomnia [odds ratio (OR):1.4, 95% confidence interval (CI):1.0-1.9], and EDS (OR:1.8,95% CI:1.3-2.6). In multivariate analysis, the relationship between insomnia and nocturia, chronic obstructive pulmonary disease (COPD), and number of drugs used persisted, whereas being male, of an older age, coronary arterial disease, COPD, Parkinson's disease, dementia, and urinary incontinence were associated with EDS (p<0.05), but there was no significant relationships between anemia and insomnia/EDS (p>0.05). CONCLUSION: The present data suggests that an elderly who has anemia is 1.4 times more likely to experience insomnia and 1.8 times more likely to experience EDS than those without anemia.

Investigation of optimum hemoglobin levels in older patients with chronic kidney disease.

AIM: The aim of the present study is to determine target hemoglobin (Hgb) values ​​in older females and males with chronic kidney disease (CKD) according to best performance in mood, gait and balance, muscle strength and activities of daily living, which are important parameters of geriatric assessment. METHOD: Patients' age, gender, education level, and comorbidities were recorded. All the participants underwent comprehensive geriatric assessment (CGA) including Basic and Instrumental Activities of Daily Living for functional evaluation, Tinetti Performance-Oriented Assessment of Mobility and Timed Up and Go Test for fall risk, and hand grip strength for muscle strength. Hgb levels and kidney functions were analyzed on the same day as CGA measurements. Receiver Operating Characteristic (ROC) analysis was used to detect the optimum level of Hgb according to the best performance of CGA parameters. RESULTS: 622 elderly CKD patients (69.3% female, 55.7% with anemia) were included. After adjustment for confounders, those with anemia had dynapenia (OR 1.60), high risk of falls (OR 1.60), and decreased functional capacity (OR 1.83) among females and those with anemia had dynapenia (OR 4.31), a high risk of falling (OR 2.42) and decreased functional capacity (OR 2.94) among males. The optimum value of Hgb level is 11.8-12.1 in females and 12.6-12.8 in males according to ROC analysis. CONCLUSION: Anemia is associated with dynapenia, high risk of falls, and decreased functional capacity in older CKD patients regardless of genericity. To prevent these negative outcomes, Hgb should be kept in the range of 11.8-12.1 in older females with CKD and 12.6-12.8 in older males with CKD.

Splenectomy in Immune Thrombocytopenia: A Retrospective Analysis of 25-Year Follow-up Data from a Tertiary Health Clinic.

Immune thrombocytopenia (ITP) is a rare autoimmune disorder presenting with isolated thrombocytopenia. Splenectomy is still one of the treatment alternatives for these patients. Here we aim to analyze long term follow-up data of splenectomy in immune thrombocytopenia. This retrospectively designed study was conducted in a tertiary health clinic. Patients with ITP who were splenectomized between 1990 and 2015 were included. Response to treatment was interpreted as 'complete response', 'response' or 'no response'. The incidence of response loss was evaluated. Perioperative and long term complications and overall survival rates were determined. Out of 51 patients, who underwent splenectomy after 12 months of diagnosis, 47 achieved a response (92.2%). Of 47 patients who had a platelet count at least 30.000/µL, 41 (87.2%) had CR. Incidence of loss of response was 10.5% (95% confidence interval (CI): 4%-26.1%) at 30 months. Two patients died, and overall survival rate was 97.4% (95% CI: 82.8%-99.6%) at 30 months of follow up. Considering the complications: two patients had venous thromboembolism, 11 had minor bleeding episodes and 15 suffered from perioperative infections. Our study suggests that splenectomy promises a high level of response with acceptable complication rates. Although less preferred recently, splenectomy should still be taken into consideration when remission is not achieved especially after 12 months of disease.

The clinical implications and importance of anemia in older women.

OBJECTIVES: The objective of this study was to investigate associations between anemia with geriatric syndromes and comprehensive geriatric assessment (CGA) parameters in older women. METHODS: 886 older outpatient women were included. Anemia was defined as a hemoglobin concentration below 12 g/dL. patients were divided into two groups as anemic and non-anemic. The relationships between anemia and CGA parameters/geriatric syndromes were determined. RESULTS: The mean age of the participants was 76.00 ± 8.91. The prevalence of patients with anemia was 15.35%. There was a significant difference between anemic and non-anemic groups in terms of age, Charlson Comorbidity Index, body mass index, the number of drugs used, and the presence of chronic renal failure (p < 0.05). After adjustment for these covariates, anemia was associated with Timed Up and Go test (OR: 1.10, 95% CI: 1.02-1.18), muscle strength (OR: 0.99, 95% CI: 0.83-0.99), dynapenia (OR: 1.92, 95% CI: 1.06-3.47), Mini Nutritional Assessment scores (OR: 0.88, 95% CI: 0.83-0.94), poor nutritional status (OR: 1.97, 95% CI: 1.10-3.48), Fried scores (OR: 1.42, 95% CI: 1.24-1.68), frailty (OR: 2.58, 95% CI: 1.42-4.69), falls (OR: 1.78, 95% CI: 1.10-2.92) and polypharmacy (OR: 2.31, 95% CI: 1.38-3.86). CONCLUSION: In the present study anemia was associated with frailty, polypharmacy, poor nutritional status, falls, and decreased muscle strength. Therefore, anemia may be a sign of poor health status in older women. When anemia is detected in an older woman, CGA should be strongly considered if not routinely performed.

Nausea and vomiting during pregnancy: a possible correlation with obsessive compulsive disorder and alexithymia.

The possible correlation between nausea and vomiting during pregnancy (NVP) with obsessive-compulsive disorder (OCD) and alexithymia were examined in this cross-sectional study. A cohort of pregnant women at the first trimester of pregnancy experiencing NVP were divided into three groups, according to severity (mild, moderate and severe) with the Pregnancy Unique Quantification of Emesis and Nausea (PUQE) test. The Maudsley Obsessive Compulsive Disorder Scale (MOCQ) and the Toronto Alexithymia Scale (TAS-20) were applied. Scores of scales were compared in all three groups, and the relationship between NVP severity and OCD and alexithymia was evaluated. On the 110 enrolled pregnant women, 42 had mild, 36 had moderate and 32 had severe NVP. Pregnant women with mild NVP had lower MOCQ scores than those with severe NVP (p = .010). Total scores of TAS-20 were higher among subjects with greater NVP severity (p < .001). PUQE scores were demonstrated significant correlations with MOCQ and total and subsection scores of the TAS-20, regardless of NVP groups. Study results showed that women with more pronounced OCD and/or alexithymia can experience somatic complaints, such as NVP, particularly intense in their first trimester of pregnancies. For this reason, psychotherapy in addition to medical treatments could be recommended to pregnant women with severe NVP.Impact statementWhat is already known on this subject? NVP is a condition experienced by most women, particularly in the first trimester of pregnancy, which can be affected by the psychosomatic condition of the pregnant woman.What do the results of this study add? The severity of nausea and vomiting according to PUQE test were significantly associated with OCD and alexithymia presence in pregnant women during their first trimester period.What are the implications of these findings for clinical practice and/or further research? These findings might demonstrate the symptoms of NVP are correlated to OCD, as well as alexithymia. Longitudinal studies are required to demonstrate the clear causal relationship between NVP and psychiatric symptoms as in OCD and in alexithymia.

What are optimum target levels of hemoglobin in older adults?

AIM: The aim of this study is to identify optimum target levels of hemoglobin (Hgb) in older males and females according to cognitive performance, mood state, nutrition intake, balance-walking functions, muscle strength and performance in daily life activities. METHOD: A total of 1942 geriatric patients who had undergone comprehensive geriatric assessment were evaluated. The patient's demographic characteristics, comorbid diseases, number of drugs, cognitive performance, mood and nutritional states, basic and instrumental daily living activity indexes were obtained from hospital files. Hgb levels were analyzed on the same day. Receiver Operating Characteristic analysis was used to detect the optimum level of Hgb according to the best performance of geriatric assessment parameters. RESULTS: 1095 participants took part of who 71.9% were female and the mean age was 76.92 ± 7.38 years (65-103 years). There was a significant negative correlation between age, number of drugs used, Geriatric Depression Scale-15, Timed Up and Go test and Hgb in both sexes while a significant positive correlation was found between Barthel and Lawton activities of daily living, Tinetti test, Mini Nutritional Assessment, Mini-Mental State Examination and Hgb (p < 0.05). The optimum Hgb levels were ≥ 13.0 for females and ≥ 13.9 in males. CONCLUSION: Findings from the present study in relation to Hgb and key geriatric evaluation parameters suggests that the optimum level of Hgb for older females and males is higher than the level of Hgb in current definitions. Data from this study suggest that the optimum value of the Hgb level is 13.0 for females and 13.9 for males.

Monitoring the performance of foot-and-mouth disease vaccines prepared against local strains in the face of antigenic evolution in the field.

National programs for foot-and-mouth disease (FMD) eradication includes the use of vaccination; Turkey which is endemic to FMD virus (FMDV) (except for the Thrace region) and there is a risk of incursion of exotic strains from eastern borders. In 2015, a devastating outbreak was caused by the A/ASIA/G-VII (G-VII) lineage, which led to the inclusion of a new vaccine strain (A/TUR/15) derived from this lineage in 3 months. Although most of the cattle population in Turkey was then immunized with A/TUR/15 (vaccine coverage: 92.8%), the G-VII lineage continued to cause outbreaks in the field despite the evidence of protection observed with A/TUR/15 in in vivo and in vitro tests. When G-VII field strains were examined, changes in their genomes were detected. As the lineage appeared to be evolving, an unconventional vaccination strategy was adapted which changed the vaccine strain with new variants of G-VII according to antigenic evolution. To assess the suitability of candidate vaccine strains derived from the variants of the G-VII lineage, three viral candidates were assessed (A/TUR/15, A/TUR/16 and A/TUR/17) by in vitro virus neutralization tests for r1 vaccine matching and in vivo heterologous challenge tests. Although all three vaccine strains were antigenically well matched with each other and other G-VII field viruses, due to continues outbreaks the vaccine strain was changed three times in 20 months from A/TUR/15 (Dec 2015) to A/TUR/16 (Dec 2016) and then to A/TUR/17 (Aug 2017). With this strategy serotype A has not been observed in the field since January 2018. This study highlights the importance of adapting the vaccine strains according to antigenic evolution as this could be a valuable combat strategy in endemic countries, rather than using well-known vaccine strain and relying only on the relationship coefficient (r1 ) value.

Single Cell Level Dielectrophoretic Responses & Dielectrophoretic Deformations of Monocytes to Quantify Population Heterogeneity.

Single-cell dielectrophoretic movement and dielectrophoretic deformation of monocyte cells were interrogated applying 20 Vpp, 50 kHz to 1 MHz signal in the 3D carbon electrode array. Heterogeneity of the monocyte population is shown in terms of the crossover frequencies, translational movement, and deformation index of the cells. The results presented that crossover range for monocytes was 100 kHz - 200 kHz, the translational movement of the cells was rapidly altered when the initial positions of the cells were in the negative dielectrophoretic region. Finally, the deformation index of the monocyte population varied from 0.5 to 1.5.

Different perspectives of immunizations during pregnancy

Background/aim: Pregnant women and infants are at risk of severe lower respiratory tract infections induced by influenza or pertussis. The uptake of both vaccines is poor in spite of proven benefits and safety. We aimed to determine the knowledge and attitude of pregnant women and their primary healthcare providers towards immunization during pregnancy. Materials and methods: This cross-sectional and interventional study was conducted in northern Turkey in 2016. It had 3 different groups including 786 pregnant women, 146 primary healthcare staff, and 97 family practitioners. Different questionnaires were filled by each group. The intervention phase of the study consisted of education of the expectant mothers about immunizations during pregnancy. Results: 786 pregnant women aged between 17­44 years were enrolled to the study. Most of the participants had favourable attitude about vaccination, but only 1.1% had influenza immunization, none had Tdap immunization. None of the participants joining the intervention stage were immunized. The healthcare staff and family physicians had knowledge about vaccinations, but had abstention for administration. Postexposure prophylaxis was also provided by referral centres. Conclusions: Most of the participants either pregnant women or healthcare workers were not vaccinated against pertussis and influenza. Dissemination of maternal immunization must be supported by the team work of healthcare professionals, authorities, universities, professional associations, stake holders, media and patients with current, evidence based knowledge.

Early initiation and exclusive breastfeeding: Factors influencing the attitudes of mothers who gave birth in a baby-friendly hospital.

OBJECTIVE: To investigate the initation time of breastfeeding, exclusive breastfeeding rates, and complementary feeding practices during the first six months of life among mothers who gave birth in a baby-friendly hospital. MATERIALS AND METHODS: A cross-sectional study was conducted with 350 mothers. Demographic characteristics, obstetric history and information about breastfeeding initiation were collected at the hospital. Information about factors affecting breastfeeding duration and feeding practices of the infants were obtained at the end of six months. RESULTS: Some 97.4% of the mothers initiated breastfeeding, 60.1% within the first hour. Exclusive breastfeeding was maintained for six months in 38.9%. Low education levels of mother/father, random breastfeeding, rare breastfeeding at night, nipple problems, bottle/pacifier use, and lack of social support were found associated with early cessation. Planned pregnancy [odds ratio (OR=2.02)] and vaginal delivery (OR=0.3) were found as the most important factors in early initiation, whereas antepartum breastfeeding education (OR=7.17) was the most important factor for exclusive breastfeeding duration in the logistic analysis. More than half (61.1%) of the infants were partially/bottle fed for six months; the most common reason was the belief that breast milk was insufficient. CONCLUSION: Efforts to encourage mothers and society to breastfeed exclusively should be made as part of a primary public health strategy to prevent early cessation of breastfeeding.

Effects of Deeper Molecular Responses on Outcomes in Chronic Myeloid Leukemia Patients in Chronic Phase Treated With Imatinib Mesylate.

BACKGROUND: The prognostic significance of complete cytogenetic response (CCyR) is well defined in patients with chronic phase chronic myeloid leukemia treated with imatinib as first-line therapy. However, the effect on outcomes of obtaining molecular response itself and the depth of it is not clear. In this study we aimed to determine the frequency of complete molecular response (CMR) during long-term follow-up and the clinical significance of CMR on patient outcomes and survival. PATIENTS AND METHODS: We retrospectively evaluated the files of 178 chronic phase chronic myeloid leukemia patients using imatinib therapy. Forty-seven patients with missing data were excluded from the study and the assessment was done in 131 patients. CMR was defined as undetectable BCR-ABL transcripts using real-time quantitative polymerase chain reaction with a sensitivity level of ≥ 104 in 2 consecutive analyses at least 3 months apart. Cytogenetic and molecular monitoring during treatment was performed according to the European LeukemiaNet recommendations criteria. Our primary objective was to analyze the association of deeper molecular response with differences in progression-free survival (PFS). RESULTS: Eighty-eight patients (67%) achieved CMR at any time in a median of 65 months of follow-up. The rate of CMR was higher in patients who achieved CCyR at 12 months and major molecular response (MMR) at 18 months. Fewer events occurred in the CMR group than the MMR group (26.1% vs. 50.0%). Overall survival was not different in both groups. CMR was associated with longer PFS with borderline significance. CONCLUSION: Prolonged imatinib therapy helps to achieve a deeper molecular response in the long-term. Achieving deeper molecular response at any time positively affects maintaining the cytogenetic and molecular responses, and decreases the transformation to accelerated and/or blastic phase. The slight prolongation in PFS did not reach statistical significance.

Surgical reconstruction in female genital mutilation.

Female genital mutilation (FGM) is an unusual condition for our country. However, an increase in FGM in future days can be predicted with the increasing numbers of exchange students coming from African countries, migration of refugees and socioeconomic relations with the African countries. We want to share our experience of two FGM victims admitted to our clinic with the request of reconstructive vulvar surgery before their marriage. Both women had WHO Type III FGM. Physical examination findings and surgical reconstruction techniques were presented.

Azacitidine versus decitabine in patients with refractory anemia with excess blast-Results of multicenter study.

The present study aimed to compare the efficacy and safety of azacitidine and decitabine in patients with myelodysplastic syndrome (MDS). A total of 88 patients diagnosed with refractory anemia with excess blast (RAEB) treated with azacitidine (n=57) or decitabine (n=31) were evaluated. Comparisons between azacitidine and decitabine groups were performed in the whole cohort, and in a 1:1 propensity score-matched cohort in order to reduce the simple selection bias. Patients who received azacitidine or decitabine had comparable overall response rates in both the unmatched (49.1% vs. 64.5%, p=0.166) and the propensity-matched cohorts (52% vs. 68%, p=0.248). The cumulative incidence of AML transformation at one year was comparable between azacitidine and decitabine in the unmatched (24.0% vs. 31.3%, p=0.26) and in the propensity-matched cohorts (18.7% vs. 31.5%, p=0.11). There was no difference in terms of transfusion requirement, febrile neutropenia episodes or the need for antifungal use during the treatment cycles in the propensity-matched cohort. The median overall survival was 20.4 months for azacitidine and 16.8 months for decitabine (p=0.59). Finally, we found that at least a four-cycle treatment with any HMA was a favorable factor. In conclusion, both azacitidine and decitabine have similar efficacy and toxicity profiles in the treatment of MDS-RAEB.