Vol. 4 No. 07 (2024)

This study investigates the structure of the product resulting from the reaction between ferrocene-carboxylic acid and o-aminobenzoic acid. To achieve this, we employed a combined approach of quantum-chemical calculations and IR-spectroscopy. Optimized structures of the reaction product were obtained using the "Gaussian 98" program. By analyzing the results from both methods, this study provides an energetic justification for the product's structure and elucidates the relationship between its structure and properties.

This article explores the upcoming trend of agritourism in Japan, where tourists are increasingly seeking authentic and immersive experiences in rural agricultural areas. The article provides an overview of the concept of agritourism and its potential impact on local economies, sustainable farming practices, and cultural preservation. It delves into the unique attractions that draw tourists to Japanese agritourism, such as tea farms, fruit-picking orchards, and traditional rice paddies. Additionally, it examines the challenges and opportunities faced by farmers and rural communities as they embrace agritourism, including issues of infrastructure, marketing, and balancing the needs of visitors with those of agricultural production. Ultimately, this article aims to provide insights into the development of agritourism in Japan and its role in promoting rural revitalization and cultural exchange.

In this article, tannins are substances that, when exposed, change the physicochemical and mechanical properties of leather and turn leather into leather. Vegetable tannins are commonly called tannins. Both abroad and in our country, plant extracts are mainly used to soften thick leather on shoe soles, technical leather, belt and seam leather, high boot leather and leather.

This study investigates the melting rate of an Erythrophleum suaveolens charcoal-fired cupola furnace with oxygen enrichment. The analysis focuses on the effects of oxygen enrichment on the furnace's thermal efficiency and melting rate. Using a combination of experimental data and mathematical modeling, the study examines the relationship between oxygen concentration and the melting rate of iron in the furnace. Key parameters such as temperature distribution, combustion efficiency, and energy consumption are evaluated. The results indicate that oxygen enrichment significantly enhances the melting rate, reduces fuel consumption, and improves overall furnace performance. This study provides valuable insights for optimizing the operational parameters of charcoal-fired cupola furnaces, promoting sustainable and efficient metallurgical processes.

The study investigates the influence of vessel pressure on the flame characteristics, specifically flame temperature and height, of adulterated kerosene fuel samples in a pressurized cooking stove. Adulteration of kerosene, often with cheaper and readily available substances, poses significant safety risks and efficiency challenges in domestic cooking appliances. By systematically varying the pressure within the fuel vessel, this research aims to determine how different pressures affect the combustion properties of kerosene mixed with common adulterants. The experimental results indicate that increased vessel pressure generally enhances flame temperature and stability but can lead to increased flame height, posing potential hazards. Understanding these dynamics is crucial for developing safer and more efficient cooking practices, especially in regions where kerosene adulteration is prevalent.