4E analysis of an underfloor heating system integrated to the geothermal heat pump for greenhouse heating

In this study, 4E (energy, exergy, exergoeconomic, and exergoenvironmental) analysis of an underfloor heating system integrated with the geothermal heat pump of a greenhouse with a usage area of 90 m(2) has been made. When the results of the 4E analysis applied to the system and its elements were examined, the energy efficiency of the heating system in the winter months has been determined to be 77.85% and the exergy efficiency 30.61%. According to the results of exergoeconomic analysis, the levelized energy cost of the system has been determined as 0.894 $/h, the unit exergy cost as 0.826$/h, and the exergoeconomic factor value as 51.12%. According to the results of the exergoenvironmental analysis, the part-based environmental impact of the system was 0.0910 mPts/s, the environmental impact value due to exergy was 0.1823 mPts/s, and the exergoenvironmental factor value was 37.77%. In addition, the equivalent CO2 emission value that will occur if the heating requirement of the greenhouse is met with a natural gas boiler instead of a geothermal heat pump was investigated and a comparison was made between the two systems. Accordingly, it has been determined that the emission of 909.75 kg equivalent carbon dioxide to the environment will be prevented in the 4-month period, which is considered the heating season, by using the heat pump. As a result, the examined heating system has been evaluated as the effective system for heating the greenhouse, reducing energy consumption, and reducing emissions that cause environmental pollution

Bulmak istiyorsaniz düşünmeniz gerekir: periprostetik diz enfeksiyonunda etken olarak Brucella Melitensis olgu sunumu ve literatür incelemesi

In addition to the difficulty of diagnosis in periprosthetic joint infections (PJI) following total knee arthroplasty, the infectious agent is also often difficult to identify. Correct identification of the pathogen increases the chance of a successful treatment. Although rare, clinicians should keep brucella infections in mind when a pathogen can not be found in PJI cases. A 58 years old female patient was diagnosed with a periprosthetic brucella infection following bilateral total knee arthroplasty. All symptoms disappeared in the postoperative first year after a two-step revision arthroplasty. We aimed to draw attention to periprosthetic infections caused by brucella and to perform a review of literature in this case report.Total diz artroplastisini takiben periprostetik eklem enfeksiyonlarında (PPE) tanı koymanın zorluğuna ek olarak, enfeksiyon etkeninin tanımlanması da sıklıkla zordur. Patojenin doğru tanımlanması, başarılı bir tedavi şansını arttırır. Nadir de olsa PPE olgularında patojen bulunamadığında klinisyenler brusella enfeksiyonlarını akılda tutmalıdır. 58 yaşında bayan hastaya bilateral total diz artroplastisi sonrası periprostetik brusella enfeksiyonu tanısı konuldu. İki aşamalı revizyon artroplastisinden sonraki ilk yılda tüm semptomlar kayboldu. Bu olgu sunumunda brusella'nın neden olduğu periprostetik enfeksiyonlara dikkat çekmeyi ve literatür taraması yapmayı amaçladık.No sponso

Infants infected with SARS-CoV-2 and newborns born to mother diagnosed with COVID-19: clinical experience

Background Almost every day, new information about the COVID-19 pandemic continues to emerge. COVID-19 presents a mild clinical picture in children. However, how it goes in newborns and pregnant is still entirely unclear. Aims To present the clinical course of SARS-CoV-2 positive newborns and outcomes of babies born to mothers diagnosed with COVID-19. Methods The present cohort-study examined two groups. The first group includes fourteen newborns born to mothers diagnosed with COVID-19. The second group evaluates twelve newborns infected with SARS-CoV-2. Results Fourteen infants born to mothers diagnosed with COVID-19 were not infected with SARS-CoV-2. They had no symptoms and pathological laboratory findings. Additionally, forty-one newborns suspected of COVID-19 were evaluated, and 12 of them were detected to be infected with SARS-CoV-2. The most common symptoms were feeding intolerance (vomiting or refusing to feed, 58%), cough (50%), elevated fever (42%), and respiratory distress (42%). Conclusion We did not come across any signs of vertical SARS-CoV-2 transmission. COVID-19 diagnosed newborns entirely healed with conservative treatment

Examination of fecal samples from primary school pupils for evidence of helminth infestation (Turkish)

In this study, 1143 fecal specimens obtained from 3 schools in different districts were examined with the sodium chloride flotation method for the presence of helminth eggs. A total of 269 fecal specimens were examined from Karsiyaka Primary School which is in an area of low socio economic standards. The species detected and their percentages are as follows: Ascaris lumbricoides, 26,76%; Trichirus trichura, 13,01%; Hymenolepis nana, 13,38%; Hymenolepis diminuta, 1.11%; Enterobius vermicularis, 3,34%; Taenia saginata, 0.37% and Ancylostoma duodenale, 8.55%. The rate at which 2 helminth eggs were detected from one student was 10,78% and the rate at which 3 were detected was 1,11%. A total of 237 fecal specimens were examined from the Tatbikat Primary School in the Cemalpa district which is of some what higher socioeconomic standard compared with the above district. The species detected and their percentages are as follows; Ascaris lumbiricoides, 22,78%; Trichirus trichura, 10,12%; Hymenolepis nana, 13.08%; Enterobius vermicularis, 4.21%; Taenia sagnata, 1,26% and Ancylostoma duodenale, 1,26%. The rate at which 2 helminth eggs from 1 student were detected was 6,32% and that at which 3 helminth eggs were detected was 0,42%. The last school studied, Celalettin Sayhan Primary School in the Resatbey district was of even higher socio economic standards. Of the 637 fecal specimens examined from this school, 25,27% were Ascaris lumbricoides; 7.69% Trichirus trichura; 5.33%, Hymenolepis nana and 0,47%, Enterobius vermicularis. The rate at which 2 helminth eggs were found in 1 student was 2,98%

Nutritional status of pediatric patients with acute lymphoblastic leukemia under chemotherapy: A pilot longitudinal study

Background:The study investigates the nutritional status in children with acute lymphoblastic leukemia (ALL) during chemotherapy treatment because nourishment is substantial, as much as chemotherapy in children with malignant diseases. Material and Method:We enrolled 17 children with ALL (between 1 to 16 year-old, mean age 6.03 & PLUSMN; 4.04 y) from 5 different centers in Istanbul between September 2013 and May 2014. Anthropometric data, prealbumin, B12, and folate levels were assessed, at diagnosis, after the induction phase of chemotherapy, and before maintenance phases of chemotherapy in a longitudinal and prospective study. Results:Patients remarkably lost weight at the end of the induction phase (P=0.064) and regained this loss before maintenance chemotherapy (P=0.001). At the end of induction chemotherapy serum prealbumin level (P=0.002), weight for height ratios (P=0.016), weight for age ratios (P=0.019) significantly decreased. From the end of the induction phase to the beginning of maintenance chemotherapy, weight (P=0.001) and weight for age (P=0.017) significantly, and weight for height were remarkably elevated (P=0.076). At the end of the induction phase, serum prealbumin levels were significantly lower (P=0.048) and below laboratory reference values (P=0.009) in children younger than 60 months compared with those older. Serum folate levels increased from the end of the induction phase to the beginning of the maintenance phase (P=0.025). Serum vitamin B12 levels did not alter significantly. Conclusion:There is malnutrition risk at the end of the induction phase of the ALL-BFM chemotherapy regimen; therefore, clinicians should follow up on nutrition closely, especially in under 5-year-old patients. However, before the beginning of the maintenance phase, children start to gain weight, and obesity risk occurs. Thus, further studies are needed to evaluate nutritional status during childhood ALL chemotherapy

Nutritional Status of Pediatric Patients with Acute Lymphoblastic Leukemia under Chemotherapy: A Pilot Longitudinal Study

Background: The study investigates the nutritional status in children with acute lymphoblastic leukemia (ALL) during chemotherapy treatment because nourishment is substantial, as much as chemotherapy in children with malignant diseases. Material and Method: We enrolled 17 children with ALL (between 1 to 16 year-old, mean age 6.03 ± 4.04 y) from 5 different centers in Istanbul between September 2013 and May 2014. Anthropometric data, prealbumin, B12, and folate levels were assessed, at diagnosis, after the induction phase of chemotherapy, and before maintenance phases of chemotherapy in a longitudinal and prospective study. Results: Patients remarkably lost weight at the end of the induction phase (P=0.064) and regained this loss before maintenance chemotherapy (P=0.001). At the end of induction chemotherapy serum prealbumin level (P=0.002), weight for height ratios (P=0.016), weight for age ratios (P=0.019) significantly decreased. From the end of the induction phase to the beginning of maintenance chemotherapy, weight (P=0.001) and weight for age (P=0.017) significantly, and weight for height were remarkably elevated (P=0.076). At the end of the induction phase, serum prealbumin levels were significantly lower (P=0.048) and below laboratory reference values (P=0.009) in children younger than 60 months compared with those older. Serum folate levels increased from the end of the induction phase to the beginning of the maintenance phase (P=0.025). Serum vitamin B12 levels did not alter significantly. Conclusion: There is malnutrition risk at the end of the induction phase of the ALL-BFM chemotherapy regimen; therefore, clinicians should follow up on nutrition closely, especially in under 5-year-old patients. However, before the beginning of the maintenance phase, children start to gain weight, and obesity risk occurs. Thus, further studies are needed to evaluate nutritional status during childhood ALL chemotherapy