Results 21 to 30 of about 12,778 (269)

Estimating temperature distribution and heat quantity of spindle shaft for machining centers

Journal of Advanced Mechanical Design, Systems, and Manufacturing
The thermal issue of spindles for machining centers is still fundamentally unresolved. Thermal problems due to increased temperature of the spindle shaft lead to thermal displacement of the tool axis and an increase in friction torque, consequently ...
Shingo KAJIKAWA, Sho MORITA, Hiroshi USUKI, Naohiko SUGITA   +3 more
doaj   +1 more source

Machining Center Opportunistic Maintenance Strategy Using Improved Average Rank Method for Subsystem Reliability Modeling

Applied Sciences
Machining centers are complex systems that consist of multiple subsystems. When maintaining these subsystems, considering opportunistic maintenance can prevent frequent shutdowns during the machining process and reduce costs.
Yingzhi Zhang, Minqiao Song, Wei Wu, Feng Han   +3 more
doaj   +1 more source

Estimation of volumetric accuracy based on linear error motion in machining centers

Nihon Kikai Gakkai ronbunshu, 2019
ISO230-1, an international standard of test code for machine tools, has been revised for the first time in 16 years. A volumetric accuracy for three linear axes was defined as a term of multi-axes motion in the revision of ISO 230-1.
Akinori SAITO, Hayato AKAIKE
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

AN ANALYSIS OF THE MANUFACTURING POSSIBILITY OF SPECIAL ANKLE FOOT ORTHOSIS COMPONENTS BY OMPARISON BETWEEN THE REQUIRED PRECISION AND THE VAILABLE PRECISION ON A VERTICAL MACHINING CENTER PROGRAMED WITH TOPSOLID [PDF]

Fiabilitate şi Durabilitate, 2010
Validation of different solutions adopted to achieve new ankle foot orthosis involves among others their prototyping. In these paper we developed a representative part for two axis machining that requires the use of the main features of TopSolid Cad and ...
Alexandru STANIMIR, Florin RUSU, Cosmin BERCEANU, Dumitru FILIP   +3 more
doaj  

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Hot press fabrication of hemisphere shell product made of bamboo fibers extracted with a machining center

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2015
In our research work, we are focusing on bamboo due to its advantages of fast growth, renewability, flexibility, low cost, and high specific strength and stiffness which can be frequently compared with glass fiber.
Toshiki HIROGAKI, Eiichi AOYAMA, Minh HUYNH, Yusuke NAKAMURA, Keiji OGAWA, Hiromichi NOBE   +5 more
doaj   +1 more source

Modeling of Flexible Bodies for the Study of Control in the Simulink Environment

Applied Sciences, 2020
When studying complex mechatronic systems, it is useful to build models able to simulate both the dynamics of the phenomenon and the control system applied. Typically, the bodies involved are modeled as rigid bodies.
Laura Salamina, Daniele Botto, Stefano Mauro, Stefano Pastorelli   +3 more
doaj   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

FEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes, Guilherme M. Azevedo, Amanda P. Barcellos, Diana Bahia   +3 more
wiley   +1 more source

Study on Kinematic Structure Performance and Machining Characteristics of 3-Axis Machining Center

Applied Sciences, 2023
The rigidity and natural frequency of machine tools considerably influence cutting and generate great forces when the tool is in contact with the workpiece.
Tzu-Chi Chan, Chia-Chuan Chang, Aman Ullah, Han-Huei Lin   +3 more
doaj   +1 more source