Castleman’s Disease presenting as a pleural mass in the thoracic cavity

A 61-year-old non-smoking Turkish woman presented with chest pain for 10 months. Computed tomography of the chest revealed a solitary, relatively well circumscribed, heterogeneous mass of 4 x 6 cm diameter in left posteriorlateral hemithorax. On thoracotomy, an extraparanchymal mass destructing the ribs was determined. Mass excision and partial chest wall resection were performed. On histopathologic examination, this mass showed features of the hyaline vascular type of Castleman’s Disease

An overview of burst, buckling, durability and corrosion analysis of lightweight FRP composite pipes and their applicability

© 2019 Elsevier Ltd. All rights reserved.The main aim of this review article was to address the performance of filament wound fibre reinforced polymer (FRP) composite pipes and their critical properties, such as burst, buckling, durability and corrosion. The importance of process parameters concerning merits and demerits of the manufacturing methods was discussed for the better-quality performance. Burst analysis revealed that the winding angle of ±55° was observed to be optimum with minimum failure mechanisms, such as matrix cracking, whitening, leakage and fracture. The reduction of buckling effect was reported in case of lower hoop stress value in the hoop to axial stress ratio against axial, compression and torsion. A significant improvement in energy absorption was observed in the hybrid composite pipes with the effect of thermal treatment. However, the varying winding angle in FRP pipe fabrication was reported as an influencing factor affecting all the aforementioned properties. Almost 90% of the reviewed studies was done using E-glass/epoxy materials for the composite pipe production. By overcoming associated limitations, such as replacing synthetic materials, designing new material combinations and cost-benefit analysis, the production cost of the lightweight FRP composite pipes can be decreased for the real-time applications.Peer reviewe

Comparison of the adsorption behavior of Basic Red 46 textile dye on various activated carbons obtained from Zonguldak coal [Bazik Kirmizi 46 tekstil boyasinin Zonguldak kömüründen elde edilen farkli aktif karbonlar üzerinde adsorpsiyon davranişinin karşilaştirilmasi]

The activated carbons obtained by physical and chemical activation techniques from Zonguldak-Kilimli region coal was used for the adsorption of a textile dye, Basic Red 46 from aqueous solutions. The effects of adsorbent preparation method, initial dye concentration and temperature on adsorption were investigated. The color removal performance of activated carbons prepared by physical activation (PAC), chemical activation with KOH (CAC) and the commercial activated carbon (AC) were compared. The batch adsorption experiments were carried out isothermally at 25, 30 and 35°C. The adsorption capacities at 25, 30 and 35°C were found as 62.7, 23.1, 19.6 (PAC); 201.6, 215.1, 231.5 (AC); and 277.8, 307.7, 323.6 mg g- 1 (CAC), respectively. It was found that the CAC sample having the highest micropore and surface area obtained by thermal treatment with KOH had the highest adsorption capacity. The results have shown that the adsorption of BR 46 exhibited an endothermic character on CAC and AC, and exothermic character on PAC. Kinetic data were adequately fitted by the pseudo- first order kinetic model. The study has shown that activated carbon obtained by KOH activation of coal could be effectively used for the adsorptive removal of BR 46 textile dye from wastewaters. The activated carbon obtained from Zonguldak coal with low cost, non toxic character and excellent adsorption performance has a high potential for sustainable commercial applications. © 2019 Gazi Universitesi Muhendislik-Mimarlik. All rights reserved

Effect of KOH treatment on bituminous coal for the effective removal of Basic Blue 41 dye from aqueous solutions

Activated carbons (ACs) were produced from Zonguldak region bituminous coal using physical and chemical techniques and evaluated for the removal of a textile dye, Basic Blue 41 from aqueous solutions. The color removal performance of ACs prepared by physical activation (PAC), chemical activation with KOH (CAC), and the commercial AC were compared; and the effects of adsorbent preparation method, temperature, and initial dye concentration on adsorption were studied. BET surface areas of the PAC, AC, and CAC were determined as 52.6, 824, and 1,312 m2 g-1, respectively. Micropore volume of PAC determined by DR method was 0.02 cm3 g-1, whereas AC and CAC have values of 0.42 and 0.57 cm3 g-1. Thermal treatment with KOH resulted in enhancement of the porosity characteristics, particularly in micropores, and the surface area of the CAC samples. The batch adsorption experiments were carried out isothermally at 25–35°C. The values for the adsorption capacity Q0, determined from the Langmuir model at 25, 30, and 35°C were 96.4, 52.1, 54.7 mg g-1 for PAC; 262.5, 283.3, 293.3 mg g-1, for AC; and 420.2, 427.4, 460.8 mg g-1 for CAC, respectively. The increase in adsorption capacity with an increase in temperature for BB 41 onto CAC and AC indicated an endothermic chemisorption process, which was attributed to increased surface coverage at higher temperature and creation of reactive and active sites. For BB 41 adsorption onto PAC, the decrease in sorption capacity with increasing temperature indicated the exothermic behavior of the sorption process that is related to physisorption. The adsorption capacity of the obtained samples was found in the order of CAC > AC > PAC. Among the AC samples prepared by different methods, the highest value of the adsorption capacity obtained was 460.8 mg g-1 at 35°C for CAC. Kinetic data were adequately represented by the pseudo-first-order kinetic model. AC prepared from coal by CAC treatment was shown to be an effective adsorbent for the removal of BB 41. © 2016 Balaban Desalination Publications. All rights reserved

Comparison of meperidine versus hyoscine during colonoscopy in the elderly: A prospective randomized study

Background: Colonoscopy is the gold standard in diagnosis of diseases of the colon. Sedation and antispasmodic agents are recommended during colonoscopy. Age is a limiting factor when the surgeon is deciding whether to use these medications or not. Subjects and Methods: One hundred twenty patients older than 65 years of age were randomized into two groups. The first group (n=60) received 2 mg of midazolam and 25 mg of meperidine intravenously. The second group (n=60) received 2 mg of midazolam and 20 mg of hyoscine N-butylbromide intravenously. The data collected were colonoscopy procedure time, time to cecum, visual analog pain scale, systolic blood pressure before and after the procedure, pulse, partial oxygen pressure, comfort of the endoscopist, the modified observer's assessment of alertness/sedation scale, and morbidity. Results: Total colonoscopy and cecal reach times were shorter in Group 2 (19.58±4.82 minutes and 10.57±2.54 minutes, respectively) than in Group 1 (25.05±5.93 minutes and 13.78±3.37 minutes, respectively) (P.05). Conclusions: Use of midazolam and hyoscine N-butylbromide during colonoscopy is safe in the elderly and significantly reduces procedure time while increasing comfort for the endoscopist. © Copyright 2012, Mary Ann Liebert, Inc. 2012

An ecosystem approach to small-scale fisheries through participatory diagnosis in four tropical countries

Participatory diagnosis is an approach to identify, prioritize and mobilise around factors that constrain or enable effective governance and management in small-scale fisheries. Diagnostic frameworks are mostly designed and used for systematic scientific analysis or impact evaluation. Through participation they also have potential to guide contextually informed improvements to management in practice, including transitions to contemporary forms of governance like the ecosystem approach to fisheries (EAF)-the focus of our study. We document and critically reflect on participatory diagnosis processes and outcomes at sites in Indonesia, Philippines, Solomon Islands and Tanzania. These sites were part of an international project on the implementation of the EAF and differed widely in institutional and operational contexts. The Participatory Diagnosis and Adaptive Management framework and the "issue radar" diagnosis map were used to identify, evaluate and address factors associated with navigating management transitions towards the EAF. We found that many challenges and priority actions identified by participants were similar across the four study countries. Participants emphasized habitat restoration, particularly mangrove rehabilitation, and livelihood enhancement. The importance of strengthening governance entities, networks and processes (e.g., harmonization of policies, education and awareness of policies) was also a prominent outcome of the diagnosis. Site-specific factors were also explored together with the differing views among stakeholders. We conclude that diagnosis frameworks are indeed useful tools for guiding management transitions in fisheries, particularly where they enable flexibility in approaches to diagnosing problems and applying solutions to local contexts