Elif Aydinli

A series of toxic nitro compounds were converted to aryl amine derivatives at room temperature in the presence of a hydrogen source such as sodium borohydride and in commercially available mineral water without the need for an organic solvent. A commercial catalyst containing Pd (PdAlO(OH) NPs) was used as the supporting material in the study. However, the amount of catalyst used was reduced by 40% compared to the amounts used previously due to the effect of mineral water. Thanks to the developed environmentally friendly and practical method, 8 different nitro arene compounds were converted to aryl amine derivatives with yields over 95%. The most powerful aspect of the developed method is that it is economical and industrial.

The pool waters pose certain risks to public health. Therefore, it is crucial for swimming pool water to meet the desired standards in terms of physical, chemical, and biological parameters, and to be regularly monitored to ensure the provision of healthy and safe swimming conditions. In our country, swimming pool water standards are determined in accordance with regulations set forth by the Ministry of Health. To maintain these standards, various pool chemicals are required, including pool water disinfectants, pH reducers, precipitators, brighteners, and algae inhibitors. The objective of our study is to develop a multifunctional tablet formulation, a technological innovation that combines the properties of these chemicals into a single product. To achieve this goal, we conducted physical and bactericidal tests on new formulations containing disinfectants such as calcium hypochlorite, trichloroisocyanuric acid, and sodium dichloroisocyanurate. The multifunctional tablet formulations developed provide an effective solution to meet and exceed the required standards for swimming pool water quality.

Objective: The aim of the study is to use two different plant extracts such as St. John's Wort (Hypericum perforatum) and Centella asiatica (L.) in the cream formulation and to determine the anti-aging effect of the new formulation. Material-Method: The plants used in the study were obtained commercially and plant extracts were obtained using the classical extraction techniques in the literature. The active ingredients in the obtained extracts were determined by HPLC method. Physical, protective efficacy, microbial analysis and anti-aging tests were carried out for cream formulations obtained with extracts. Results: Plant extraction studies were carried out in the study. Centella asiatica (L.) was extracted with 20.8% yield at 20 mL of methanol and 60 ℃. As a result of HPLC analysis, it was determined that there were 1740 mg/kg asiatic acid and 4380 mg/kg madecasic acid in the extract. In the extraction studies performed on Hypericum perforatum, the expected active ingredient, hypericin, was not found. For this reason, commercial extract containing 2.5% hyperforin was obtained and the studies were continued on these extracts and final cream formulations were obtained. Conclusion: pH, viscosity, density, protective effectiveness tests and microbial analysis tests of the final formulations were performed. In addition, in vitro anti-aging studies have been carried out in accredited laboratories. With in-vitro anti-aging tests, it was determined that the level of collagen 1A increased more in the formulation where both extracts were used together.

Although as an energy source today fossil fuels are used as an energy source, it should not be forgotten that fossil fuels will run out one day. In addition, it is seen that greenhouse gases which emitted from fossil fuels are seriously threatening the environment with their release into the atmosphere. We see the best example of this in today's climate changes. Therefore, sustainable and environmentally friendly energy resources are needed. One of these energy sources is also hydrogen energy which obtained from hydrogen sources. It is also important to choose an economical and easy-to-use energy source for the use of hydrogen energy. Today, solid hydrogen sources are preferred for use in many areas. Solid sources of hydrogen are easy to transport, store and maintain. In addition, it provides high efficiency hydrogen and it is an environmentally friendly hydrogen source. It is possible to obtain a continuous energy source in the health sector by using solid hydrogen sources in fuel cells. It should not be forgotten how important electrical energy is, especially in hospitals. Günümüzde fosil yakıtlar bir enerji kaynağı olarak kullanılsa da fosil yakıtların bir gün tükeneceği unutulmamalıdır. Ayrıca fosil yakıtlarla birlikte sera gazlarının atmosfere salınmasıyla çevreyi ciddi şekilde tehdit ettiği görülüyor. Bunun en güzel örneğini günümüz iklim değişikliklerinde görüyoruz. Bu nedenle sürdürülebilir ve çevre dostu enerji kaynaklarına ihtiyaç vardır. Bu enerji kaynaklarından biri de hidrojen kaynaklarından elde edilen hidrojen enerjisidir. Hidrojen enerjisinin kullanımı için ekonomik ve kullanımı kolay bir enerji kaynağı seçmek de önemlidir. Günümüzde katı hidrojen kaynakları birçok alanda kullanım için tercih edilmektedir. Katı hidrojen kaynaklarının taşınması, depolanması ve bakımı kolaydır. Ayrıca yüksek verimli hidrojen sağlar ve çevre dostu bir hidrojen kaynağıdır. Yakıt hücrelerinde katı hidrojen kaynakları kullanılarak sağlık sektöründe sürekli bir enerji kaynağı elde etmek mümkündür. Özellikle hastanelerde elektrik enerjisinin ne kadar önemli olduğu unutulmamalıdır.