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Asfalt üretiminde uygulamaya konulan bilimsel gelişmelerden biri de ılık karışım asfalt teknolojisidir. Ilık karışım asfalt teknolojisi ile daha düşük sıcaklıklarda asfalt üretimi mümkün olmaktadır. Bu çalışmada, Pawma-1 (%0,35) ve Low Energy and Low Carbon-Dioxide Asphalt Pavement (Leadcap) (%1,5) ılık karışım asfalt katkı maddeleri ile Stiren-Butadien-Stiren (SBS) (%2) katkı maddesi karışım numunelerinde denenmiştir. Bununla beraber, sönmüş kirecin ılık karışım asfaltlarda filler olarak kullanımının etkileri de incelenmiştir. Çalışmada TÜPRAŞ rafinerisinden temin edilen bitüm (B50/70) ve agrega olarak Elazığ Hankendi bölgesinden temin edilen kalker türü kırmataş malzeme kullanılmıştır. Modifiye bağlayıcılar hazırlandıktan sonra Marshall yöntemine göre optimum bitüm oranları belirlenerek karışım numuneleri hazırlanmıştır. Karışım numunelerinin yarısında filler yerine %2 oranında sönmüş kireç kullanılmıştır. Hazırlanan numuneler üzerinde Marshall stabilite ve akma deneyi (ASTM D-1559) uygulanmıştır. Leadcap, Pawma-1 ve SBS katkıları ile hazırlanan karışımlarda stabilite artmıştır. Sönmüş kirecin, ılık karışım asfaltların stabilitelerini arttırdığı görülmüştür. Sönmüş kireç katkılı SBS modifiyeli karışımların en olumlu sonuçları verdikleri tespit edilmiştir.

Objectives: We evaluated the effectiveness and outcomes of functional endoscopic sinus surgery in the treatment of nasal polyposis., Patients and Methods: The study included 407 patients (262 males, 145 females; mean age 42+/-12 years; range 20 to 76 years) with nasal polyposis. Of these, 102 patients (25%) had asthma, 25 patients (6.1%) had asthma and aspirin sensitivity, and 142 patients (34.8%) had anatomic variations. The patients were operated on using the Messerklinger and Wigand techniques. Functional endoscopic sinus surgery was performed bilaterally. Evaluations were made preoperatively and at six months by endoscopic examination and paranasal sinus computed tomography (Lund-Mackay score). Postoperatively, the patients were treated with nasal irrigation and topical steroid spray., Results: Following surgery, the mean computed tomography score decreased from preoperative 17.0+/-4.3 to 8.5+/-4.7. Major complication occurred in one patient. Nasal mucosal adhesion was the most frequent minor complication (5.4%). Nasal polyposis recurred in 78 patients (19.1%), of whom 57 patients underwent revision surgery., Conclusion: Our data show that functional endoscopic sinus surgery combined with corticosteroid administration is effective in the treatment of nasal polyposis.

Objectives: We investigated the prognostic factors affecting survival and recurrence in laryngeal cancer., Patients and Methods: The study included 116 patients (4 females, 112 males; mean age 55+/-9 years; range 35 to 75 years) who underwent surgery for squamous cell carcinoma of the larynx. Risk factors for survival and recurrence were analyzed using univariate analysis and Cox regression analysis. The mean follow-up period was 43+/-25 months., Results: Mortality occurred in 14 patients, nine of which were due to tumoral causes. In univariate analyses, lymphovascular invasion, cartilage invasion, positive surgical margins, postoperative deglutition time, and complications had a significant effect on survival, while recurrence was influenced by age, postoperative deglutition time, postoperative radiotherapy, and positive surgical margins (p<0.05). Cox regression analyses showed that postoperative deglutition time, radiotherapy, recurrence, and tumor localization significantly affected survival, and preoperative differentiation, tracheotomy, pre- and postoperative tumor stage, radiotherapy, cartilage invasion, and positive surgical margins were significant prognostic factors for recurrence (p<0.05)., Conclusion: Evaluation of the prognostic factors in larynx cancer may serve as a guide to treatment and follow-up.

Mucoepidermoid carcinoma of the larynx is an uncommon malignancy. It is mostly located in the supraglottis. It frequently occurs in middle-aged and elderly men. The treatment is primarily surgical. A 42-year-old man presented with a complaint of hoarseness of six-month history. Examination revealed a swelling involving the right arytenoid, false cord, and vocal cords. The right vocal cord was fixed. A biopsy obtained from the lesion showed a low-grade mucoepidermoid carcinoma. He underwent total laryngectomy and right functional neck dissection.