Results 71 to 80 of about 202,849 (356)

Morphology of Root Canal Cross-sections of Resected Roots of First and Second Lower Molars [PDF]

open access: yes, 2004
Precise preparation of the root canal ostium with a view to hermetical closing with retrograde root filling is an important prognostic factor determining the success of the procedure of tooth resection.
Domagala, Agnieszka   +3 more
core   +1 more source

Label‐Free, Sensitive, and Direct Detection of Cardiac Troponin Biomarkers Using Frequency‐Locked Microring Resonators

open access: yesAdvanced Sensor Research, EarlyView.
A deployable, chip‐integrated approach to the detection of heart attack biomarkers is demonstrated using silicon photonic microring resonators combined with microfluidics. By applying the Pound–Drever–Hall frequency locking technique, sensor signals are measured with improved signal‐to‐noise ratio, applying this to real‐time, selective readouts.
Evan Diamandikos   +9 more
wiley   +1 more source

Role of the Setae in an Ectoparasitic Seal Louse in Reducing Surface Drag: Numerical Modeling Approach

open access: yesAdvanced Theory and Simulations, EarlyView.
The seal louse Echinophthirius horridus has uniquely shaped setae that may reduce drag during its host's dives. Using numerical simulations, this study demonstrates that their natural inclination promotes vortex formation, minimizing friction and energy loss. These findings provide insights into biological surface adaptations and may inspire the design
Anika Preuss   +3 more
wiley   +1 more source

Accurate Finite Element Modeling Method of Herringbone Gear based on Multipoint Constraint Method

open access: yesJixie chuandong, 2022
A sufficiently refined mesh at the stress position is the basis for finite element analysis of gears to obtain accurate tooth surface contact stress and tooth root bending stress.
Guanwang Geng, Wei Liu, Qingsong Zhang
doaj  

Micro-CT study of the influence of orthodontic force on the root resorption and orthodontic tooth movement

open access: yes口腔疾病防治, 2016
Objective To analyze the tooth movement distance and root resorption in rats under different orthodontic forces, to explore the effect of orthodontic force on the root resorption during orthodontic tooth movement.Methods 64 male Sprague Dawley (SD) rats ...
WU Chang-jing
doaj   +1 more source

Parasubthalamic Glutamatergic Neurons Coordinate Cardiovascular Homeostasis and Locomotion in Mice

open access: yesAdvanced Science, EarlyView.
PSTNVglut2 neurons function as a new central baroreflex hub via projections to the NTS, modulating parasympathetic cardiac output to maintain cardiovascular homeostasis while synchronously regulating locomotion. Blood pressure fluctuations negatively correlate with locomotor performance.
Ming‐Xuan Lu   +8 more
wiley   +1 more source

渐开线齿轮齿根过渡曲线最佳线型实现方法

open access: yesJixie chuandong, 2013
Based on finite element optimization analysis principle and using of characteristics of NURBS spline curve,through the shape optimization of standard involute gear tooth root part operated in Pro/E and ANSYS workbench software,a new realization method of
董新华, 马勇, 柳强
doaj  

Irisin‐Loaded Cerium‐Containing Mesoporous Bioactive Glass for Effective Immunomodulation and Odontogenesis of Dental Pulp Cells

open access: yesAdvanced Science, EarlyView.
The Irisin/Ce‐MBGNs delivery system can slowly release myokine Irisin for vital pulp therapy. Irisin/Ce‐MBGNs can enhance mitochondrial function and promote the differentiation of inflammatory macrophages toward M2‐Mφ, thereby regulating the immune response mechanism of inflamed dental pulp.
Mingxin Wang   +9 more
wiley   +1 more source

Treatment of a first molar with external root resorption in the middle third using endodontic microsurgery and vital pulp therapy: a case report

open access: yesBMC Oral Health
Background External root resorption is a pathologic process starting from the root surface of the tooth. At present, there are few reports about the treatment of vital pulp preservation in the tooth with external root resorption.
Yue Zhao   +5 more
doaj   +1 more source

Comparison of analysis and experiment for dynamics of low-contact-ratio spur gears [PDF]

open access: yes
Low-contact-ratio spur gears were tested in NASA gear-noise-rig to study gear dynamics including dynamic load, tooth bending stress, vibration, and noise.
Lin, Hsiang Hsi   +4 more
core   +1 more source

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