Results 21 to 30 of about 9,298 (261)

An Improved Phenomenological Model of the Planetary Gearbox Based on Meshing Vibration Characteristics

open access: yesIEEE Access, 2020
With the construction of periodic functions relative to the meshing frequency, rotating frequency, and the faulty frequency, etc., the phenomenological model provides a simple and effective way of representing the vibration signal of the planetary ...
Yingchao Luo, Lingli Cui, Jianfeng Ma
doaj   +1 more source

Solid Pseudopapillary Neoplasm of the Pancreas in Children and Adolescents: Expert Recommendations

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Solid pseudopapillary neoplasm of the pancreas (SPN) is a rare low‐grade malignant exocrine pancreatic tumor, mostly discovered during the second decade of life in females, with a very good prognosis, provided microscopically complete surgical excision is achieved.
Sabine Irtan   +18 more
wiley   +1 more source

The Role of Chemotherapy in Pediatric Myoepithelial Carcinoma: A Systematic Review of the Literature

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Myoepithelial carcinoma (MEC) in pediatric patients is a rare and aggressive malignancy characterized by heterogeneous morphology and variable molecular features. The optimal role of chemotherapy remains unclear. We conducted a systematic review according to PRISMA 2020 guidelines to evaluate chemotherapy in pediatric and young‐adult patients ...
Marco Salvi   +7 more
wiley   +1 more source

Spatial Tooth Profile Design of Triple-circular-arc Harmonic Gears and Finite Element Simulation of Torsional Stiffness

open access: yesJixie chuandong, 2023
In order to improve the transmission capability by exploring the relationship between torsional stiffness on output shaft and load meshing characteristics, a simulation model of finite element analysis (FEA) is built to evaluate the performance of tooth ...
Xing Jingzhong   +3 more
doaj  

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

MESHING THEORY ANALYSIS OF THE MODIFIED ROLLER ENVELOPING HOURGLASS WORM DRIVE

open access: yesJixie qiangdu, 2022
Based on the modification of the single-roller-enveloped toroidal meshing worm drive, a parabolic modified roller-enveloped toroidal meshing worm drive is obtained.
QI Yan   +4 more
doaj  

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

open access: yesFEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto   +3 more
wiley   +1 more source

Kinematic Characteristic Analysis of Hypoid Gear based on Two Kinds of Eigenfunction

open access: yesJixie chuandong, 2021
Based on the classical space meshing theory, two kinds of basic eigenfunctions and eigenvectors of conjugate surfaces are defined. The function of the two kinds of eigenfunctions in the analysis of the meshing characteristics of conjugate surfaces is ...
Bingyang Wei   +3 more
doaj  

Service provision with autonomic characteristics in mesh environment [PDF]

open access: yes, 2021
Η παρούσα διδακτορική διατριβή εστιάζει στο πεδίο των υπηρεσιών σε κινητούς ομότιμους κόμβους. Πιο συγκεκριμένα, στα πλαίσια της διατριβής προτείνεται μια αρχιτεκτονική και αναλύεται μια υλοποίηση ενός Κατανεμημένου Πίνακα Κατακερματισμού (Distributed Hash Table-DHT) η οποία είναι ικανή να λειτουργήσει χωρίς καμία κεντρικοποίηση.
openaire   +1 more source

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