Compressive strength development of class F fly ash geopolymer activated by sodium hydroxide was compared between initial heat curing at 75ºC for 24 hours and the ambient medium. Class F geopolymeric mortar was produced with standard Rilem sand, sodium hydroxide, and water. Mortar mixtures ratios were 3, 1, and 0.288 for sand, fly ash, and water, respectively. Some samples were cured in laboratory conditions; some samples were heat cured for 24 hours at 75ºC. Ambient curing medium result with non-measurable low compressive strength up to 7 days, however significant strength development observed in longer curing time up to six months. Heat curing developed higher strength at all times than ambient curing did. It was concluded that heat cured geopolymer samples could be utilized in construction materials, while utilization of non-heat cured samples was not practical due to its longer curing duration needs.

In this study, the usability of essential oils as fuel additives in internal combustion diesel engines was investigated.Salvia candidissiman was preferred as essential oil raw material due to its oil efficiency.The essential oil of salvia candidissima plant biomass was obtained by hydro distillation method.The essential oil obtained was then converted into biofuel by transesterification reaction.Biofuel is added to diesel fuel at a rate of 10% by volume and is named [SB-10].DF] and [SB-10] fuels were tested in a variable compression ratio diesel engine at fixed 1550 rpm.Results: It showed that the [SB-10] fuel produced 2.46 Nm more torque and 4.29 HP more power than DF fuel. When looking at the combustion data, 4.99% in the pressure values of the fuel [SB-10], 16.72% in gas temperatures, % in the rate of increase in pressure. 22.84 and 2.85% more in cumulative heat release values.

The study was conducted to determine hay yield and some quality characteristics of 18 silage maize varieties in the ecological conditions of Bilecik during the 2019 and 2020 years. The experiments were arranged in randomized blocks design with three replications. In the silage corn varieties harvested at dough stage and, plant height, stem diameter, number of leaf, number of ear, first ear height, ear weight and hay yield were investigated. According to the results of two years; plant height, stem diameter, number of leaf, number of ear, first ear height, ear weight ranged between 2.98-3.78 m, 1.75-2.76 m, 11.70-16.53, 1.41-2.44, 0.99-1.52 m and 337.89-534.60 g respectively. The highest dry matter yield was determined in Samada-07 (4262,57 kg/da), Arifiye (4086,03 kg/da), ADA9516 (3634,06 kg/da) ve AGA (3644,14 kg/da), while the lowest was in Simpatico (2503,62 kg/da). As a result, it was determined that FAO groups are important for variety selection in Bilecik ecological conditions, and latest varieties are better than the median and earliest varieties. In this respect, Samada-07, Arifiye, ADA-9516 and AGA varieties performed better than other corn varieties in terms of the morphological characteristics and hay yield.

Elastin is a type of protein consisting of a hydrophobic region where proline, valine and glycine amino acids are densely located and a cross-linking region where alanine amino acids are located, and provide flexibility and mobility to the tissues of vertebrate organisms. Since the damage to the elastin causes many diseases, a lot of research has been done on elastin protein. However, studies on damage to elastin exposed to a toxic substance are limited in the literature. For this purpose, changes in the structure of the elastin protein exposed to Aroclor 1254, one of the important permanent organic pollutants, were examined histopathologically and it was determined that the damage occurred was concentration-dependent.