مزاح کے انسانی نفسیات پر اثرات اسلامی تعلیمات کی روشنی میں Effects of humor on human psychology in the light of Islamic teachings

Every branch of art leaves a deep impact on the human psyche, but the immortal fact is that the reason for their creation is also to reduce the tension of the human mind. The most representative theory of humor in philosophy and psychology and even in physics. Is the idea of ​​well-being, comfort or well-being? Broadly speaking, this suggests that humor (which has an obvious physiological effect) has effects on the nervous system and allows different levels of stress to be released. In other words, laughter and good humor have the ability to release stored nervous energy. Humor is included in human nature and man has a strong desire for this thing that there should be such means for him to express joy and expansion. Because through them, man is blessed with mental and physical peace and comfort. In these things, he considers the survival of his self-respect. Islam not only allows humor, sports and entertainment, but also sets rules and regulations within which human beings can fulfill their natural needs. Its cultural traditions should also be propagated. As the head and governor of the Islamic state, the Holy Prophet (ﷺ) made the best arrangements for his state, the taste of the people and their entertainment, and set an example for the rulers that, like other matters, oppression in this not to be taken for granted, fun and humor are part of human nature. He (ﷺ) allowed fun and laughter and He (ﷺ) himself used to be cheerful. Islam admires cheerfulness and cheerfulness, and encourages it so that people can be refreshed and perform their duties in an auspicious manner. Through this paper, it will be clarified that what are the effects of humor on human psychology and what are the teachings of Islam and the Prophet of Islam in this regard. Key Word:    Fine Arts, Humor, Human terms, Human humor

Performance of Ci Engine in Dual Fuel Mode Using Vegetable Oils

The problem of unavailability of conventional fuels and pollution is becoming a serious issue day by day. Many countries have been looking for alternative energy resources to substitute petroleum. Vegetable oil can be one of the alternatives which can be used as fuel in automotive engines. Changing the chemistry of fuel by adding the vegetable oil or completely replacing the traditional fuels by the vegetable oil is being experimented. Vegetable oils such as mustered oil, sunflower oil, cotton seed oil, canola oil, peanut oil, coconut oil, and waste vegetable oil have been considered as alternative fuels for CI Engines. Kinematic viscosity, specific gravity, cetane number, and pour and cloud points of these oils are much higher than those of diesel. Therefore, such oils, in pure or blended form, cannot be used as fuel in engines for long run. In this study, oils from various feedstocks have been transesterified due to which their specific gravity and kinematic viscosity were decreased and pour and cloud points were increased. The chemical and physical properties of chemically modified oils, called biodiesel or methyl ester, were tested in accordance with ASTM D6751 and found comparable to those of diesel. The engine performance and emissions were evaluated using biodiesel in pure and blended form and it was concluded that a blend of 20% waste vegetable oil methyl ester and 80% diesel (W20) could be successfully used as an alternative fuel, in CI engine. Although higher brake specific fuel consumption of W20 was observed, yet the fuel was found to be environmental friendly. Reduced amount of THC and CO were found in the exhaust emissions of the engine. However, level of NO x was increased. To reduce NO x , certain modifications in the fuel injection system of the engine were made and results were obtained by running the engine using W20 fuel. The experimental results showed that engine performance was not much affected and engine emitted lower amount of NO x , without much affecting THC, and CO emissions.