Manisa Celal Bayar Üniversitesi Akademik Arşiv Sistemi
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POLLEN MORPHOLOGY OF CARYOPHYLLACEAE SPECIES FROM TURKEY
No full textThe pollen morphology of 45 species, 11 of which are endemic, belonging to 15 genera of Caryophyllaceae was investigated by light (LM) and scanning electron microscopy (SEM). On the basis of exine structure, ornamentation and morphological data, 10 distinct pollen types viz., 1. Arenaria type, 2. Stellaria holostea L., 3. Cerastium type, 4. Dianthus type 5. Gypsophila repay type, 6. Lychnis viscaria type, 7. Silene vulgaris type, 8. Silene caryophylloides subsp. subulata (Poiret) Otth, 9. Silent conica type and 10. Agrostemma githago L., were recognized. Pollen grains are tectate, spheroidal, polypantoporate, microechinate (spinulose), perforate, microperforate (punctate tubuliferous), reticulate and semireticulate. Significant differences in grain size and pore number are also found in all the species. The biggest grains are in Silene L., and Agrostemma L., species, whereas the smallest grains are in Petrorhagia (Ser.) Link. The most advanced species of Caryophyllaceae regarding evolution are found in Silene and Agrostemma
Synthesis, radiolabeling and in vitro evaluation of azathioprine loaded magnetic solid lipid nanoparticles
No full textIn this study, it is aimed to design a smart drug delivery system for the diagnosis and treatment of cancer cells. Magnetic-solid lipid nanoparticles were synthesized as a drug delivery system and azathioprine (AZA) was loaded into this system. This newly created system was radiolabeled using technetium-99 m with a radiolabeling yield of 90.3%. Drug loading into the SLMNP was found as 86%. The biological behavior of Tc-99m and radiolabeled magnetic solid lipid nanoparticles loaded with azathioprine (Tc-99m-AZA-SLMNP) was investigated in vitro and in vivo
Analysis of solar underfloor heating system assisted with nano enhanced phase change material for nearly zero energy buildings approach
No full textThis study focuses on the design of a solar-assisted underfloor heating system specifically tailored for nearly zeroenergy buildings. The system incorporates a Photovoltaic/Thermal (PV/T) collector as the primary heat source. The analysis takes into account the geographical coordinates of Elazig province in Turkey, and the boundary conditions are carefully chosen as the inlet parameters in the program. To enhance the system's performance, Nano-enhanced Phase Change Material (PCM) is utilized by filling pockets around the underfloor heating pipe with varying thicknesses. Cu nanoparticles of 1% solid volume fraction is considered. The fundamental objective of this approach is to achieve room temperature without any additional energy consumption during nighttime periods when solar radiation is unavailable. To investigate the impact of the system, copper nanoparticles are introduced to the PCM, and their effects on room temperature are numerically analyzed using the finite volume method under turbulent flow conditions. Realistic building conditions are considered, and a container is selected as the scenario building for simulations. The results reveal that the best room temperature conditions are obtained with pure PCM of width k (Case 1), pure PCM of width k/2 (Case 3), PCM with nanoparticle added of width k/2 (Case 3), and no PCM (Case 4), respectively. The highest temperature difference of 4 K is obtained between the configurations of Case 1 and Case 4 which shows the favorable impacts of using PCM. However, between the cases of using nano-PCM and PCM, room temperature difference of 0.1 K is obtained which indicates the very slight improvement of using nano-powders in PCM for this energy system. These findings provide valuable insights into the design and optimization of solar-assisted underfloor heating systems for nearly zeroenergy buildings, offering the potential to improve energy efficiency and thermal comfort
Thermal, fluorescence, and electrochemical characteristics of novel poly(urethane-imide)s
No full textIn this study, the novel thermally stable poly(urethane-imide)s (PUIs) were synthesized. The structures of the obtained polymers were confirmed by FT-IR and NMR techniques. The molecular weight distribution parameters of the synthesized PUIs were determined by the size exclusion chromatography (SEC). The synthesized PUIs were also characterized by solubility tests, solution viscosity, TG-DTA, and DSC analyses. Cyclic voltammetry measurements were carried out, and HOMO-LUMO energy levels and electrochemical band gaps were calculated from their absorption edges. Additionally, optical band gaps (E-g) were determined by using UV-vis spectra of the materials. Fluorescence measurements were carried out in various concentrated DMSO solutions to determine the optimum concentrations to obtain the maximal PL intensities. Also, morphological characterizations were made by scanning electron microscopy technique
Comparison of clinical effectiveness of thoracic epidural and intravenous patient-controlled analgesia for the treatment of rib fractures pain in intensive care unit
No full textBACKGROUND The results of thoracic epidural and systemic patient controlled analgesia practice were evaluated retrospectively in patients with thoracic trauma. METHODS Patients who were admitted to the intensive care unit between 1997 and 2003, with a diagnosis of multiple rib fractures related to thoracic trauma were evaluated retrospectively. Data were recorded from 49 patients who met the following criteria; three or more rib fractures, initiation of PCA with I.V. phentanyl or thoracic epidural analgesia with phentanyl and bupivacaine. RESULTS There were no significant differences between the groups concerning injury severity score. APACHE II score (8.1 +/- 1.6 and 9.2 +/- 1.7) and the number of rib fractures (4 +/- 1.1 and 6.8 +/- 2.7) were higher in thoracic epidural analgesia group (p<0.05). Pain scores of patients who received thoracic epidural analgesia were significantly lower as from 6th hour during whole therapy (p<0.05). Length of intensive care unit stay (15.6 +/- 5.9 and 12.1 +/- 4.4 day) was found to be shorter in thoracic epidural analgesia group (p<0.05). There were no differences between the groups regarding mechanical ventilation requirement, pulmonary and cardiac complications. CONCLUSION We suggest that the use of thoracic epidural analgesia with infusion of local anesthetics and opioids are more appropriate as they provide more effective analgesia and shorten length of intensive care unit stay in chest trauma patients with more than three rib fractures who require intensive care
Effect of the presence of polycystic ovary syndrome-related features on anti-Mullerian hormone and androstenedione levels in adolescents with or without menstrual irregularity
No full textPurpose To determine the variation in anti-Mullerian hormone (AMH) and androstenedione (A4) concentrations in adolescent girls, with or without menstrual cycle disorder in relation to phenotypic features of. PCOS. Methods Adolescent girls (n = 129), age range 14-19 years, were recruited in the cohort study. All participants were in the 4th or 5th year after menarche. Sixty-eight had menstrual irregularities, usually oligomenorrhea (OM), and 61 had regular menstruation (RM). AMH and A4 concentrations were measured. Hirsutism was recorded. Polycystic ovarian morphology (PCOM) was evaluated by transabdominal pelvic ultrasonography. Polycystic ovary syndrome (PCOS) features were defined according to Rotterdam consensus criteria. Results AMH and A4 were significantly higher in adolescent girls with OM than in girls with RM (p < 0.05). A4 and body mass index (BMI) of adolescents with OM was significantly higher in those with hirsutism than those without hirsutism (p = 0.01 and 0.008, respectively). There was a positive correlation between A4 and BMI (r: 0.327, p < 0.01). Logistic regression showed that the frequency of OM in the presence of PCOM was 10.8 times (95% CI 2.04-12.09) compared to those without PCOM. The highest AMH concentrations were found in girls with OM, hirsutism, and PCOM (p < 0.05). Conclusions AMH and A4 are elevated in adolescents with oligomenorrhoea. High A4 is more prominent in the presence of hirsutism and is associated with increased BMI. PCOM, increases the likelihood of oligomenorrhea by about 10 times. AMH increase as the combination of clinical features of PCOS increases in adolescents with menstrual irregularity
Degradation of poplar and spruce wood chips using alkaline glycerol
No full textPoplar and spruce wood chips were degraded by using glycerol as a solvent and alkaline glycerol with and without alkali media at different temperatures: 440, 450, 460, 470, 480, 490, and 500 K, then the results were compared with the other organic solvent systems. The degradation reactions were mainly occurred as delignification and partly decomposition of cellulose. The effects of solvent, temperature, catalyst, delignification time and wood species on the yield of delignification were discussed. Major byproducts from delignification rections of wood chips include lignin degradation products. Lignin and its degradation products can be utilized as fuels
Optimization of pullulan production from hydrolysed potato starch waste by response surface methodology
No full textThe production of pullulan from hydrolysed potato starch waste by Aureobasidium pullulans P56 was investigated. The liquefaction of potato starch was done by Ca-alginate immobilized amyloglucosidase and pullulanase enzymes in a packed bed bioreactor. Various organic nitrogen sources were tested and none of the nitrogen sources gave pullulan concentrations as high as that obtained with yeast extract. Response surface methodology was used to investigate the effects of three factors (incubation time, initial substrate concentration and initial pH) on the concentration of pullulan in batch cultures of A. pullulans. No previous work has used statistical analysis on the optimization of process parameters in pullulan production from hydrolysed potato starch waste. Maximum pullulan concentration of 19.2 g/l was obtained at the optimum levels of process variables (incubation time 111.8 h, initial substrate concentration 79.4 g/l, initial pH 7.26). The optimization led to a 20% increase in pullulan concentration. (C) 2010 Elsevier Ltd. All rights reserved
The effect of activator application on the anatomy, morphology, and viability of Lycopersicon esculentum Mill. pollen
No full textThe present study examined the effect of ACT-2, a K-vitamin group activator intensively applied to tomato (Lycopersicon esculentum Mill.), on the anatomy, morphology, and viability of tomato pollen from plants grown under greenhouse conditions. The activator was applied to tomatoes at the recommended dosage (150 cc/100 L of tap water) and double the recommended dosage (300 cc/100 L of tap water). Pollen width and length, exine and intine layer thickness, pore width and length, and crevice width and length were measured using an ocular micrometer. Reductions were observed in all the measured parameters in all application groups, except for pollen width and length values at the 150 cc/100 L dosage, as compared to the control group. The viability of the pollen, as determined by triphenyl tetrazolium chloride, decreased in all the application groups as the dosage increased, as compared to the control group, and the toxic effect became more evident at the 300 cc/100 L dosage. In particular, non-viable pollen types, such as wrinkled pollen and abnormally shaped pollen, were observed in the fungicide groups. Additionally, the activator caused changes in the morphological structure of the tomato pollen. The morphological structures of some pollen, such as subprolate and suboblate, which were not observed in the control group, were seen in pollen in the polar view at the 150 cc/100 L ACT-2 dosage
The influence of ion implantation on cell attachment to glassy polymeric carbon
No full textIn vitro biocompatibility tests have been carried out with model cell lines to demonstrate that near surface implantation of silver in Glassy Polymeric Carbon (GPC) can completely inhibit cell attachment on implanted areas while leaving adjacent areas unaffected. Patterned ion implantation permits precise control of tissue growth on medical applications of GPC. We have shown that silver ion implantation or argon ion assisted surface deposition of silver inhibits cell growth on GPC, a desirable improvement of current cardiac implants