Science topic
Mechanical Processes - Science topic
The behaviors of materials under force.
Publications related to Mechanical Processes (10,000)
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Aujourd’hui le constat est sans appel : la motivation, l’engagement, l’implication ne sont plus toujours d’actualité dans le monde du travail. Dans un contexte de crise de l’engagement, les enjeux managériaux se sont déplacés. Ce n’est plus tant la question de la stratégie ou de l’organisation, que celle de la mobilisation des collaborateurs et de...
The formation of shear shock waves in the brain has been proposed as one of the plausible explanations for deep intracranial injuries. In fact, such singular solutions emerge naturally in soft viscoelastic tissues under dynamic loading conditions. To improve our understanding of the mechanical processes at hand, the development of dedicated computa...
This paper addresses the critical disconnect between prediction and decision quality in portfolio optimization by integrating Large Language Models (LLMs) with decision-focused learning. We demonstrate both theoretically and empirically that minimizing the prediction error alone leads to suboptimal portfolio decisions. We aim to exploit the represe...
Fiber, a crucial component of ruminant diets, plays an essential role in rumen health, energy production, and milk synthesis. This article explores the complexities of fiber digestion in ruminants, focusing on neutral detergent fiber (NDF) and acid detergent fiber (ADF). We examine the influence of fiber components such as cellulose, hemicellulose,...
This paper extends an adjacent perspective to social comparison theory: temporal comparison theory, which refers to intraindividual comparison over time (i.e., comparing the present self with past or future selves), and develops this theory in the context of virtual consumer identity. Building on existing literature on social comparison theory, tem...
What can we learn about the mechanical processes that shape tissues by simply watching? Several schemes suggest that static cell morphology or junctional connectivity can reveal where chains of cells transmit force or where force asymmetries drive cellular rearrangements. We hypothesize that dynamic cell shape changes from time lapse sequences can...
According to the definition of the International Organization for Standardization, essential oil is „a product obtained from a natural raw material of plant origin, by steam distillation, by mechanical processes, from the epicarp of citrus fruits, or by dry distillation, after separation of the aqueous phase – if any – by physical
processes“. Esse...
Atmospheric haze degrades remote sensing images by obscuring critical details, diminishing data interpretation accuracy. This paper presents CLEAR-Net: Cascaded Local and External Attention Resource Network, a novel dehazing framework designed to enhance clarity and detail in remote sensing images. CLEAR-Net employs a two-block cascaded architectur...
Gas and dust outbursts are recurring phenomena on comets, offering critical insights into their subsurface activities. On comet 67P/Churyumov-Gerasimenko, two distinct outburst types have been identified: CO2-dominated ”summer fireworks” near perihelion and water-driven events often linked to cliff collapses outside the perihelion period. While CO2...
The relatively low production cost and short lifespan of plastic products contribute significantly to the annual accumulation of plastic waste, raising serious environmental concerns. Conventional disposal methods like landfill and incineration not only waste valuable resources but also result in substantial secondary pollution. In response to the...
This paper examines the relationship between the five industrial revolutions and the increasing complexity of modern economic systems. Starting from classical mechanization processes (First Industrial Revolution) through electrification (Second Revolution), digitalization (Third Revolution), cyber-physical systems (Fourth Revolution), and finally,...
Incremental forming technology is gaining increasing attention from various industrial sectors owing to its adaptability and potential for customization. Nonetheless, some challenges such as poor geometric precision are impeding the industrial widespread of this method. Hybridization, cooperation between mechanisms/processes/energies/approaches, ha...
This review paper examines the innovative use of liquid crystals (LCs) as phase change materials in thermal energy storage systems. With the rising demand for efficient energy storage, LCs offer unique opportunities owing to their tunable phase transitions, high latent heat, and favorable thermal conductivity. This paper covers various types of LCs...
This study investigates the unstressed reduction process of Galician. In particular, we wondered about: (1) the specific mechanisms involved, (2) whether there are different degrees of reduction, depending on the word-stress position, or whether reduction applies categorically to all unstressed vowels, (3) whether it depends on the duration, and (4...
Citation: Nappi, C.; Camerlingo, C.; Cristiano, R. Josephson Junction Dynamics as a Ride on a Roller Coaster. Physics 2025, 7, 2. https:// Abstract: We discuss the dynamics of a roller coaster cart driven by a constant force along the suspended track of a winding roller coaster. The track is assumed to be arbitrarily long and specially shaped. It i...
This study aims to enhance the intelligence level of power grid fault analysis to address increasingly complex fault scenarios and ensure grid stability and security. To this end, an intelligent information system for power grid fault analysis, leveraging improved computer communication technology, is proposed and developed. The system incorporates...
Background: Plant growth and morphogenesis is a mechanical process controlled by genetic and molecular networks. Measuring mechanical properties at various scales is necessary to understand how these processes interact. However, obtaining a device to perform the measurements on plant samples of choice poses technical challenges and is often limited...
Creative tourism has emerged as a transformative force in the realm of tourism, promising to enhance not only economic outcomes but also the quality of life (QoL) of destination communities. However, the specific impact of creative tourism on the QoL of its workforce, specifically in older artisans, remains understudied. This research aims to fill...
This article explores the transformation of agricultural systems through the integration of Big Data analytics and Site Reliability Engineering (SRE) practices, focusing on the development of robust and reliable data systems for smart agriculture. The article examines the evolution from traditional farming methods to data-driven precision agricultu...
Laminating a free‐standing carbon electrode film onto perovskite film is a promising method for fabricating HTM (hole transport material)‐free carbon electrode perovskite solar cells (c‐PSCs), offering more flexibility by decoupling the processes of carbon electrode and perovskite layer formation. However, the power conversion efficiency (PCE) of l...
This study reviewed 98 references on the Life Cycle Assessment (LCA) of the conversion of agricultural waste into biofertilizers. Feedstocks were manure (39%), organic/food/wood waste (30%), and crop waste (26%). Biofertilizers were digestate, compost, biochar, and pellets, and full-scale application was prevalent. Approximately 64% of references c...
The strength and energy of processed biological materials depend, among others, on their properties. Despite the numerous studies available, the relationship between the internal structure of corn grains and their mechanical properties has not yet been explained. Hence, the aim of the work is to explore the relationship between the internal composi...
This study investigates the subcritical crack growth behavior of a 3D woven SiC‐based composite under cyclic loading at 1100°C in air. The composite was subjected to monotonic tension and tension–tension fatigue tests using both unnotched dumbbell‐shaped and edge‐notched specimens. Detailed examinations of crack growth were conducted through optica...
This study investigates the implementation of mechanized high-frequency mechanical impact (HFMI) treatments to enhance the fatigue life of complex welded structures. Digital visual inspection and path planning are utilized through digital laser scanning system to automate the HFMI process for more complex weld shapes in S355 steel grade, such as ci...
Over the past decade, rhodium‐catalyzed C−H bond activation reactions have made significant progress and found broad applications in organic synthesis, biomedicine, and materials science. This is primarily attributed to their broad substrate scope, excellent functional group compatibility, and high reactivity. Currently, although considerable progr...
The traditional understanding of brain function has predominantly focused on chemical and electrical processes. However, new research in fruit fly (Drosophila) binocular vision reveals ultrafast photomechanical photoreceptor movements significantly enhance information processing, thereby impacting a fly’s perception of its environment and behaviour...
Semantic segmentation of high-resolution images from remote sensing is crucial across various sectors. However, due to limitations in computational resources and the complexity of network architectures, many sophisticated semantic segmentation models struggle with efficiency in real-world applications, leading to an interest in developing lightweig...
El siguiente artículo de investigación pretende evidenciar los resultados obtenidos a través de un estudio sobre las prácticas pedagógicas en los estudiantes de la Licenciatura en Ciencias Sociales de la Institución Universitaria Politécnico Grancolombiano, en el marco del Proyecto Longitudinal de Prácticas Pedagógicas (PLPP), con el propósito de i...
Single-Walled Carbon Nanotubes (SWCNTs), with their superior nanoscale properties, are supposed to be the ideal material for next-generation wiring. However, establishing chemical bonding between SWCNTs presents a formidable challenge. The interconnection process should be executed with precision, applying a heat source that induces a chemical reac...
This paper conducts experimental and numerical simulations of the riveting process using the Smoothed Particle Galerkin (SPG) method. The riveting process involves significant material failure, making precise simulation challenging. Initially, the mechanical process of riveting and quality testing experiments are briefly described. In addition, the...
There is an increasing interest in developing combine harvesters due to the excessive losses and costs of wheat harvesting. Modifying a new concept can promote the mechanized process for wheat combine harvesters. Therefore, the research aims to examine new modifications in John Deere 1450 CWS combine harvester reel to suit reaping winter wheat unde...
Introduction. The attractiveness of polymer-based application medicinal products lies in the fact that these dosage forms have a number of advantages over traditional ones: due to pharmaceutical factors, it is possible to achieve therapeutic effects using small doses of the active pharmaceutical ingredient; reduce/avoid side effects of the active p...
We propose a new kinetic BGK-type model for a mixture of four monatomic gases, undergoing a bimolecular and reversible chemical reaction. The elastic and reactive interactions are described separately by distinct relaxation terms and the mechanical operator is the sum of binary BGK contributions, one for each pair of interacting species. In this wa...
Fetal bovine serum (FBS) has long been the standard supplement in cell culture media, providing essential growth factors and proteins that support cell growth and differentiation. However, ethical concerns and rising costs associated with FBS have driven researchers to explore alternatives, particularly human platelet lysate (HPL). Among these alte...
The most critical failures in solid‐state batteries, including interfacial detachment, cracks, and dendrite growth are coupled with or fundamentally belong to a class of overarching phenomena that may be broadly defined as mechanical processes. However, current research on mechanical processes is far from sufficient, and is in its infancy compared...
This study examined the empirical relationship between organizational justice (OJ) and organisationalcitizenship behaviour (OCB). The sample for the study consisted of two hundred and forty (245) academicmembers of staff (both teaching and non teaching) from the nine randomly selected universities in the NigerDelta Region of Nigeria. The study adop...
High-speed and long-runout landslides constitute one of the most devastating natural disasters. The scraping and erosion of the foundation by these landslides significantly alter the dynamic and catastrophic properties of the landslide mass. This study centered on the movement process of the landslide mass, utilizing numerical simulations to delve...
Introduction . Mechanisms with non-circular gears are of wide interest to researchers and inventors due to their compactness and the implementation of a wide range of transfer functions. The development of this area is stimulated by the advancements and reduction in cost of mechanical processing and additive manufacturing technologies, as well as t...
Passive nondestructive testing (NDT) methods allow one to detect damage by the energies emitted from the internal processes. While the test conditions can be controlled and repeatable, obtained data are random, and the probability of detection (PoD) is affected. However, in concrete with complex fracture behavior, factors such as signal attenuation...
This paper presents the development of solutions for the autonomous disassembly of electric motors, a vital component in the realm of e-mobility. With the escalating growth in electric vehicle (EV) production, exemplified by the registration of 10.8 million EVs worldwide in 2022 and the substantial sales of specific electric motor models, the impor...
The implementation of Brazil’s Reverse Logistics System,regulated by decree 10,240/2020, encounters significant environmentaland technological challenges in post-consumer electrical and electronicwaste (e-waste) collection and treatment. To address the adverse im-pacts of e-waste on the environment and human health, it is necessaryto develop sustai...
Metal 3D printing has been used in the manufacturing of dental implants. Its technical advantages include high material utilization and the capacity to form arbitrarily complex structures. However, 3D printing alone is insufficient for manufacturing two-stage titanium implants due to the limited precision in printing titanium alloy parts. In this s...
Based on the ethnographic description of a recent event-a road accident in July 2022, the paper analyzes the mechanization process of indigenous worlds and, in particular, of the practical consequences of the diffusion of motorcycles among the Chacobo (Panoan) of the Bolivian Amazon. The event is analyzed as a social drama that allows to shed light...
The paper discusses the design methodology of the technological processes of mechanical processing, taking into account the fact that these processes are determined by the interaction in tolerances of four distinct systems such as the part, the blank, the technological process and the technological system, each of which has its own dimensional stru...
Background: This study aimed to validate a method for characterizing and quantifying the multi-elemental profiles of different insect flours to enable their distinction, identification, and quality assessment. The focus was on three insect species: cricket (Acheta domesticus), buffalo worm (Alphitobius diaperinus), and mealworm (Tenebrio molitor)....
Our research is focused on the missing, but important and necessary Draconic gearing of the Antikythera Mechanism. The three Lunar cycles Sidereal, Synodic and Anomalistic are represented on the Mechanism by correlating the Fragments A and C (part of the Front plate), whereas the fourth Lunar cycle Draconic results after correlating the unplaced Fr...
Artificial Intelligence (AI) is revolutionizing the operation and optimization of mechanical systems across industries. By leveraging AI, industries can enhance efficiency, reduce downtime, and improve system reliability. This paper explores the integration of AI-driven solutions in mechanical system operations, focusing on predictive maintenance,...
Introduction: While social science research has ignored the religious space and religion-based services for almost a century (Bielfeld and Cleveland, 2014: 443), the last three decades have seen the emergence of a new class of actors in the field of community development. They organize volunteers and provide services to citizens and even government...
During the construction of elevated bridge pile foundations, the mechanical processes, including the extrusion and friction caused by the steel casing’s rotation into the soil and the soil pressure unloading due to soil extraction from pile holes, can significantly disturb existing structures. To address the engineering challenge posed by the plann...
Many large pipeline components in an aerospace engine are made of superalloy. Precision machining of superalloy curved surface components is an important way to achieve the weight reduction of the aerospace engine’s gas pipeline system. However, this type of components often uses the hot forging technique to process blanks, and the components proce...
This research is concerned with the investigation of waste bentonite produced from a quarry in Cyprus, after being polymer-amended for use as a low-density solid additive in water-based drilling fluid systems (WBFS). According to API procedures, the waste bentonite samples are mechanically processed to a size < 63 μm and then activated with soda as...
Communities in China’s high-density cities, like Shanghai, are evolving from traditional residential roles into vibrant centers of entrepreneurial innovation. This research delves into the development of community-supported entrepreneurial ecosystems (CSEEs) in the city, with a specific focus on the sustainable co-creation mechanisms facilitated by...
The paper describes the change in the mechanical and microstructural properties of the material after machining with an end mill with variable machining kinematics. The developed model of surface topography was verified after machining with an end mill with a spherical end surface. Also, the author analyzed the correspondence between the experiment...
This work evaluated the influence of impregnation of boron compounds, in three concentrations, on Pinus sp. veneers, and its effect on the properties of plywood. The experiment was carried out in a completely randomized design, in a 3 × 3 + 1 factorial scheme, with three boron compounds (boric acid, borax, and disodium octaborate tetrahydrate) and...
Weight of the grains is an important feature in the quality assessment and agricultural mechanization processes. This study presents a method for predicting the weight of durum wheat grains by combining image processing techniques with artificial neural networks (ANN). Physical characteristics of wheat grains, such as length, width, thickness, and...
With the rapid increase in global demand for high-performance batteries, particularly driven by the growth of electric vehicles and large-scale clean energy storage systems, the need for effective battery recycling methods has become more pressing than ever. This paper provides a comprehensive examination of both traditional and innovative methods...
Previous research findings regarding mechanized welding were used as a starting point for project Dynalink. Aim was to test process competitiveness, so mechanized process was compared with hand welding. After successful welding completion with Railtrack, process was retried with Submerged Arc Welding carriage TFD1. Improvements were suggested for f...
Returning pruned branches into the field is a key procedure in kiwifruit cultivation. It utilizes discarded branches and aids in orchard management. Shearing and bending behaviors dominate the mechanized process of branch return; however, current research lacks appropriate modeling methods for these processes. In this study, we developed a discrete...
Introduction to Research Methodology
The concept of research has been part of human history for centuries, evolving alongside intellectual developments in various cultures.
The term itself comes from the Old French word "recherche," meaning to search or seek again. Throughout history, research has played a critical role in the advancement of soc...
Peat and products of its processing are successfully used as sorbents. In the
present work investigated the sorption capacity of peat and lowland peat humic acids in relation to the cations of heavy metals. It is shown that preliminary mechanical processing of peat is able to increase its sorption activity and significantly increase the yield of hu...
The comprehensive analysis of existing literature reveals that the effective utilization of cooling and lubricating fluids plays a critical role in enhancing the efficiency of mechanical machining processes. These fluids not only facilitate the removal of chips but also significantly influence the accuracy of the surface finishes achieved. As such,...
Active development of digital cyber-physical systems for application the mechanical processing and design of new technologies opens up new opportunities for increasing the efficiency of control and monitoring. Cutting tool as general element of the technological system includes preparatory stages of its development consisting of different subsystem...
Este trabajo de investigación se llevó a cabo en el Instituto Superior Tecnológico Luis Arboleda Martínez de la ciudad de Manta, centrado en el taller de procesos mecánicos, donde se encuentran las máquinas de soldadura utilizadas para la formación técnica de los estudiantes. Estas máquinas abarcan procesos de soldadura esenciales como SMAW, GMAW,...
To achieve high precision in the machining of complex-shaped parts, the correct combination of technologies with the machining center is necessary, especially if it has only 3 axes, to obtain the best results. The present study focuses on technological assurance of the mechanical processing of complex-shaped parts on Computer Numerical Control (CNC...
The fatigue allowance effectively mitigates declines in physiological state due to work fatigue. An appropriate allowance rate facilitates timely recovery for employees and serves as a crucial basis for labor quota formulation. In this paper, the action mode in mechanical processing was extracted and disassembled into six action units. The study co...
In order to solve the problem of lateral deviation during the short-distance conveying process of paper, this paper adopts the response surface method (RSM) to establish a regression model of the paper deviation amount with respect to the feed speed, pressing force and friction coefficient. The accuracy of the model is evaluated through variance an...
Plant architecture is an important agronomic trait that impacts crop yield. The tiller angle is a critical aspect of the plant’s structural organization, which is influenced by both internal and external factors. The genetic mechanisms underlying the tiller angle have been extensively investigated in other plants. However, research on wheat is rela...
Desde su perfeccionamiento, a partir de la creación de
los tipos móviles metálicos, la imprenta fue la principal
herramienta para difundir ideas y conocimientos, y una
vez traída a América, se convirtió en un poderoso elemento de
dominación y evangelización. Y más tarde, de educación y de
opinión, con una activa participación en los procesos indepe...
In unmanned aerial vehicles (UAVs) detection, challenges such as occlusion, complex backgrounds, motion blur, and inference time often lead to false detections and missed detections. General object detection frameworks encounter difficulties in adequately tackling these challenges, leading to substantial information loss during network downsampling...