Different brewing methods can lead to changes in the physicochemical properties of green tea. In this study, the physicochemical properties of green tea brewed with different amounts (5, 7.5 and 10 grams) and times (5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, and 60 minutes) were investigated. Green tea produced by Çaykur was used in the study. Mineral analysis of green tea samples was performed with ICP-OES, and color analysis was performed with Minolta Spectrophotometer. The antioxidant activity was assessed using the DPPH method and the total phenolic content was determined using the Folin–Ciocalteu method. In terms of mineral content, it was determined highest levels of mineral content (mg/kg) for Al, Ca and Mg (10 g-25 minutes); Fe, Mn and Na (10 g-25 minutes); and B (10 g-50 minutes) as 16.005, 4.099, 24.075, 0.120, 13.855, 1.320 and 0.164, respectively. It was determined lowest levels of mineral content (mg/kg) for Al, Ca, Mg, and Mn (5 g-5 minutes); B and Fe (5 g-10 minutes), and Na (5 g-15 minutes) as 2.756, 1.193, 3.324, 1.23, 0.025, 0.002 and 0.48, respectively. In terms of color, it was determined that the lowest and highest L* values are 39.97 (10 g-45 minutes) -54.23 (5 g-35 minutes), lowest and highest a* values are -2.24 (5 g-5 minutes) (-4.70) (7.5 g-35 minutes) and lowest and highest b* values are 4.91 (5 g-5 minutes)- 23.98 (10 g-60 minutes). The antioxidant activity value (inhibition %) in green tea was found to be the range of 28.51 % (5 g, 45 minutes)- 47.95 (10 g- 40 minutes), and the total phenolic content (mg GAE/mL) was found to be the range of 15.99 (5 g, 5 minutes)- 35.61 (10 g, 15 minutes). The findings determined that green tea brewed with different amounts and times showed statistical differences in terms of color, mineral content, antioxidant activity, and total phenolic content.

In the study, it is designed to be useful and appropriate to benefit from the purchased items in the Central District of Tokat. Proportional sampling method is interviewed with 384 views. By applying the chi-square test to the data set, correlation with the highway was made. Statistically, it's pretty affordable in price, from products purchased from education, age-related sales, to unfavorable prices. What was reached in the study; discounts, vegetation, and what may be of importance to decision makers.

The main purpose of this study is to compare the perceived stress level of university students in terms of body-mass index categories and gender. 235 university students (183 female, 53 male) between the ages of 18-40 participated in the study. Participants were selected from six different departments of six universities by convenient sampling. In the study, a personal information form asking about university, department, age, disease status, drug use, weight, height and gender, and a perceived stress scale were used as data collection tools. While body mass index (BMI) categories and gender were determined as independent variables in the study, perceived stress level was determined as dependent variable and the data were analysed with a one-way ANOVA test. The findings revealed that there was no statistically significant difference in the perceived stress levels of the participants in terms of gender and body mass index categories. However, for one factor of the stress scale (readiness to cope with stress), participants in the normal body mass index range reported significantly less stress than participants in the obese body mass index range. The findings will be discussed in the light of the literature.

Promoting the agricultural sector with up-to-date technologies and inputs is convenient to enhance productivity. Production intervention is needed by introducing and adopting proper agronomic practices. Improved agricultural technologies increase production, quality, sustain food security, economic development and natural resource conservation. Koka, Meki and Ziway are known for their vegetable production as well as intensive agrochemicals consumption. Agrochemicals are applied on farm to enhance soil fertility, reduce pathogens, and induce plant growth. Tomato is one of the main commercial cash crops in these areas. Most commercially productive tomato varieties are highly sensitive to disease, vulnerable to nutrient deficiency, and other abiotic stress that requires rigorous agrochemical inputs. Ethiopian tomato production is very low due to various contributing factors including lack of improved varieties, diseases, pests, poor farming system, soil fertility maintenance as well as poor irrigation system. Farmers in the study areas applied inaccurate agrochemicals dose, rate, and application schedule that foster repeated spray. Intense agrochemical application leads to adverse environmental and health impacts due to deposit of toxic chemicals, residue leakage to water bodies and air pollution. It is important to practice proper agricultural inputs, reduce hazardous chemical residues, protect humans, other beneficial organisms and the environment. Moreover, developing IPM technology is recommended for better healthy agricultural production and sustainability.

In the study, the growth performances of the Shibot fish (Tor grypus) with an average weight of 2.38 g were evaluated by feeding them with 3 different protein-containing feeds for 45 days. In order to create these evaluations, the experimental groups were designed as G1 (33%), G2 (37%) and G3 (41%) fed with different protein levels. Effects on body weight gain (BWG), Feed conversion rate (FCR), Specific growth rate (SGR), Survival rate, Economic conversion rate (ECR) and Economic profit index (EPI) as growth parameters has been researched. At the end of the study, the offspring reached a weight of 3.42±0.16 g, 4.17±0.06 g and 4.50±0.02 g, respectively. G3 and G2 group individuals showed similar performance in terms of end-trial FCR, EPI and ECR.

The types and densities of honeyed plants vary depending on the altitude. This causes the amount and Physicochemical structure of honey produced in apiaries of different altitudes to change. In this study, honey harvest from the honeybee colonies placed at different altitudes in the same geographical region was carried out in the first week of September. Standard laboratory methods were used to determine some physicochemical properties of the honey samples. Some of the minimum and maximum average values obtained as a result of the analysis of honey samples; moisture 14.70% and 18.60%, free acidity 20.50 meq/kg and 25.30 meq/kg, pH 3.20 and 4.30, EC 0.22 and 0.44 mS/cm, fructose 32% to 45%, glucose 0.10% to 0.18%, sucrose from 0.66% 1.80%, maltose ranged from 0.66% to 1.80%. Also, HMF ranged from 1.80 mg/kg to 3.50 mg/kg, proline 530.00 mg/kg and 710.00 mg/kg, Density from 1.44 g/cm3 to 1.49 g/cm3, Invertase 20.30 U/kg-28.50 U/kg, Diastase activity 13.23-19.07 and Total phenolic content ranged from 76.00-94.00 g. It has been determined that the physicochemical structures of honey produced at different heights are statistically different from each other. This study aims to determine the effect of altitude difference on the quantity and physicochemical structure of honey.

It is foreseen that there may be a water crisis in the next years due to global climate change, the need for food with the increasing population and the need for fresh water. Due to the scarcity of freshwater resources and the difficulty in access to quality water, water resources should be used in the most efficient way. Water conservation is of great importance in regions where water is scarce. The water harvesting method, which allows rainwater to be collected, stored and reused could be applied in various ways. In this study, water harvesting methods and techniques aiming to develop a strategy that will provide maximum benefit from rainwater in arid and semi-arid areas are discussed.

The aim of this study was to reveal the effect of whey powder (WP) supplementation on chemical composition, silage fermentation, in vivo digestibility and net energy lactation (NEL) value of high dry matter (DM) alfalfa silage (Haylage). Alfalfa treated with different doses WP (0, 2, and 4%) were ensiled in plastic cans for 60 days. Nine Kıvırcık rams were used to estimated digestibilities of haylages in 3x3 Latin Square design with fifteen days experimental period. According to the results, the addition of WP significantly increased the DM of alfalfa haylage compared to the control whereas decreased ether extract, crude protein and crude ash. But, cell wall fraction rates of all groups were similar. Relative feed value and physical characteristics other than color improved in WP supplemented groups, and lactic acid rates increased in these groups. In terms of silo acids, the best values were found in the group with 4% WP. On the other hand, the addition of WP increased the organic matter digestibility of haylages, however the effect on other in vivo digestibility of crude protein, crude fiber, nitrogen free extract and neutral detergent fiber was insignificant. Moreover, total digestible nutrients (TDN) and NEL values of haylages were found to be improved with the addition of WP. As a result, it was concluded that in order to obtain quality haylage in the ensiling of high DM and long chopped alfalfa, WP generally can be used as an alternative source of carbohydrates and a 4% whey powder dose can be recommended in the production of haylage especially in the sense of improving silage fermentation.

In this study, beta-lactam group antibiotic residues were investigated in raw cow's milk. For this purpose, a total of 86 raw milk samples were used as material. Samples were collected periodically from farms in various outlets and surrounding villages in the province of Sivas. Beta-lactam group antibiotic levels in raw cow's milk were determined by ELISA method with commercial test kit. According to the analysis results, beta-lactam levels were between 0.35-0.70 ng/mL in 64 (74.4%) and between 0.71-3.7 ng/mL in 22 samples (25.6%) determined of 86 raw cow milk samples. The residue levels detected in the samples are in accordance with the legal limits declared by the European Union (EU) commission and Turkish Food Codex Communique.

Due to the emerging needs in parallel with the developing technology and industrialization, the importance of renewable energy sources is increasing with the decrease of usable fossil resources and the ever-increasing need for energy. For this reason, solutions are sought to provide the energy needed in a timely, sufficient, and reliable manner. Wind energy has the greatest potential and usage area among renewable energy sources. The wind, which has advantages such as clean, fast commissioning, reliability, and being independent of fuel, is considered a good example of a clean energy source with these features. In this study, the production potential of electrical energy from wind energy was investigated by using wind data for Sinop province. Wind energy potential on the availability of wind energy systems suitable for its natural structure for Sinop province; Visual Basic 6.0 was determined using the computer package program. In the study, hourly wind data were used and analyzes were made for suitable wind energy systems. In addition, for a possible WPPs, analysis has been made and evaluated considering the current data; The availability of wind energy in Sinop province has been tried to be revealed.