Journal of Natural Sciences and Technologies

Selection of Methods for Displaying Information on The Technical Condition of Elctronic Appliances

Mykola Starodubtsev — 2024-12-26

A geometric interpretation of the processes of recognition and classification of the technical condition of electronic appliances is proposed, which made it possible to solve the problem of displaying information to a decision maker in accordance with the requirements for ensuring the visibility of the process of development of manufacturing defects in electronic devices.

Features of Photopolymer 3D Printing Technology

Igor Nevliudov — 2024-12-26

3D printing technologies have become widely popular and are now utilized across a broad range of fields, from science to manufacturing. Certain areas, such as the production of dental prosthetics and casting of gold jewelry, have become heavily reliant on 3D printing, particularly photolithography technology. This high-precision method employs photopolymer resin as its primary material.

The development of the technology and the significant interest in it have led to the emergence of new materials with diverse physico-chemical properties, such as flexible photopolymers resistant to wear, or casting photopolymers, among others.

Currently, the main focus of improvement lies in automating production processes to eliminate the need for constant oversight, enabling 3D printing to be integrated into large-scale manufacturing. This aligns with the transition to Industry 4.0, incorporating the Internet of Things (IoT).

The authors analyzed the defects of photopolymer 3D printing using test samples and identified the technological parameters that influence their occurrence.

3D Printing Technologies in Pharmaceuticals: Opportunities and Prospects

Bohdan Misan — 2024-12-26

In recent years, additive manufacturing, commonly known as 3D printing, has become an increasingly critical tool in the medical field due to its ability to produce unique, patient-specific devices. This technology enhances treatment efficacy by allowing for the customization of medical solutions tailored to individual patient needs. Additionally, 3D printing significantly reduces the time and cost associated with the production of medical devices and components. Specifically, it plays a key role in the development of implants, prosthetics, and personalized medical instruments, thereby positively impacting the personalization of healthcare. With the advancement of novel biocompatible materials, 3D printing enables the fabrication of products possessing the necessary mechanical properties for a diverse range of medical applications.

An Investigation of The Kinetic Energy Operator of A Polyatomic Molecule with Geometric Algebra

Baghdad Abdulhameed Abdullah AL-BADANI — 2024-12-26

Physics concepts require mathematical frameworks to be understood and supported as an algebraic expression. Mathematicians and physicists have introduced and explored a variety of algebras throughout history. One of these is Clifford Algebra, often known as geometric algebra.

This work developed a general and useful method for deriving the operators of the kinetic energy of polyatomic molecules using Geometric Algebra. The kinetic energy operator of a polyatomic molecule contains the vibrational and rotational kinetic energy operators.

The gradients of vibrational coordinates form the exact vibrational kinetic energy operator of a polyatomic molecule. The conventional methods utilized for obtaining these gradients can often be extremely laborious. However, the gradients for any vibrational coordinate can be readily computed using geometric algebraic techniques. These gradients are the measuring vectors. so, the components of the reciprocal metric tensor readily form that emerges in the exact internal kinetic energy operators of polyatomic molecules. On the other hand, Finding the measuring vectors for the rotational degrees of freedom is more difficult because the components of the total angular momentum operator are not conjugated to any rotational coordinates. Nonetheless, using geometric algebraic methods without any restrictions on the number of particles in the system, rotational measuring vectors for any geometrically defined body frame may be easily computed and this is what we show in this paper.