Results 131 to 140 of about 136,412 (330)

One‐Pot Transition‐Metal‐Free Methods for the Synthesis of All Three Bonds of the Alkyne's Triple Bond

Chemistry – A European Journal, EarlyView.
One‐pot transition‐metal‐free methods for the synthesis of all three bonds of the alkyne's triple bond are reviewed. After analysis of several named reactions and discussion of improvements, recent advances in the synthesis of alkynes are discussed. Each section contains a proposed reaction mechanism and analysis of the strengths and weaknesses of the ...
Eugene Kim, Yu Wu, Judith N. Currano, Jianyou Mao, Patrick J. Walsh   +4 more
wiley   +1 more source

Form and load transfer aspects of foundation systems: Case‐based implementation and adaptation for buildings

Deep Underground Science and Engineering, EarlyView.
Upon conceptualization of structural behavior, foundations in terms of their form are divided into linear (1D), planar (2D), and volumetric (3D). Regarding the load transfer mechanisms, linear foundation systems are considered vector‐acting, planar foundations are divided into section and surface‐acting, and volumetric ones are recognized as block ...
Abolfazl Eslami, Amirhossein Ebrahimipour, Meysam Imani, Reza Imam, Pinqiang Mo   +4 more
wiley   +1 more source

Finite Element Modeling of a Thermoplastic Polyurethane Ball for Rolling Seismic Isolation

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT The Elastomeric‐Ball Pendulum (EBP) system, which consists of an elastomeric ball rolling on a spherical concrete surface, has been proposed as an isolation system for lightweight structures. Experimental tests have shown that the mechanics of such a rolling ball are remarkably complicated because the vertical load changes the shape of the ...
Sergio I. Reyes, Dimitrios Konstantinidis, Michalis F. Vassiliou   +2 more
wiley   +1 more source

EFFECT OF PLATELET RICH FIBRIN AND MESENCHYMAL STEM CELL ON MYOBLAST AND FIBROBLASTS RATIO IN RABBIT MUSCLE DEFECT

Journal Orthopaedi and Traumatology Surabaya, 2019
Background: One of the problems in Orthopedics which often results in less satisfactory outcomes is the muscle injuries treatment. This is due to slow healing process and outcome has not been optimal because it produces scar tissue. Purpose: To evaluate
Dwikora Novembri Utomo, Mohammad Zaim Chilmi, Angga Fiandana   +2 more
doaj   +1 more source

Comparative Evaluation of Coronally Advanced Flap and Vestibular Incision Sub-Periosteal Tunnel Access Technique with Platelet-Rich Fibrin in the Treatment of Gingival Recession Defects- A Clinical Study

Journal of Pharmacy and Bioallied Sciences
Background and Aims: This study aim to treat gingival recession defects in the anterior and premolar teeth of the maxilla and mandible by comparing two methods: the coronally advanced flap (CAF) and the vestibular incision subperiosteal tunnel access ...
Nidhi Yadav, Manini Singh, Amit Wadhawan, Prashant Tyagi   +3 more
doaj   +1 more source

Effects of L‐PRF and A‐PRF+ on periodontal fibroblasts in in vitro wound healing experiments

Journal of Periodontal Research, 2019
Objective To determine whether leukocyte‐platelet‐rich fibrin (L‐PRF) and advanced platelet‐rich fibrin (A‐PRF+) differ in their in vitro capacity to induce proliferation and migration of periodontal fibroblasts.
L. Pitzurra, I. Jansen, T. D. de Vries, M. Hoogenkamp, B. Loos   +4 more
semanticscholar   +1 more source

Direct Numerical Simulation of Magnetohydrodynamic Slip‐Flow Past a Stretching Surface Using Physics‐Informed Neural Network

Heat Transfer, EarlyView.
ABSTRACT Traditional numerical methods, such as finite difference methods (FDM), finite element methods (FEM), and spectral methods, often face meshing challenges and high computational cost for solving nonlinear coupled differential equations. Machine learning techniques, specifically Physics‐informed machine learning, address these obstacles by ...
Ahmad, Feroz Soomro, Husna Zafar
wiley   +1 more source

Platelet-rich fibrin (PRF) in implants dentistry in combination with new bone regenerative flapless technique: evolution of the technique and final results

Open Medicine, 2017
Most common techniques for alveolar bone augmentation are guided bone regeneration (GBR) and autologous bone grafting. GBR studies demonstrated long-term reabsorption using heterologous bone graft. A general consensus has been achieved in implant surgery
Cortese Antonio, Pantaleo Giuseppe, Amato Massimo, Howard Candace M., Pedicini Lorenzo, Claudio Pier Paolo   +5 more
doaj   +1 more source

High‐Frequency Ultrasonographic Characterization of Subcutaneous Glomus Tumors

Journal of Clinical Ultrasound, EarlyView.
Color Doppler image reveals intralesional hypervascularity. ABSTRACT Objective To evaluate the clinical manifestations and ultrasonographic characteristics of glomus tumors under the nails and other subcutaneous soft tissues. Methods A retrospective analysis was performed on 45 patients with pathologically confirmed glomus tumors who underwent ...
Mingyu Bai, Nan Wang, Jie Jiang
wiley   +1 more source

The influence of flap design on the relevance of biomaterials in regenerative periodontal surgery

Journal of Periodontology, EarlyView.
Abstract Background The aim of this systematic review was to explore whether the benefits of biomaterials in periodontal regenerative/reconstructive surgery are affected by the type of flap employed. The study addresses the existing gap in the evidence to substantiate the beneficial effect of minimal invasive periodontal surgical approach compared to a
Payvand Menhadji, Neha Kansagra, Luigi Nibali   +2 more
wiley   +1 more source