نتایج جستجو برای: mechanically
تعداد نتایج: 18983 فیلتر نتایج به سال:
Background and Objectives: Artificial airway suctioning is an important intervention to take care of mechanically ventilated patients. The aim of this research was to determine the effect of artificial airway suction based on the comprehensive criteria for suctioning on the patients' hemodynamic status in ICU. Materials and Methods: This study was a randomized clinical trial by before-after ...
Objective- Investigate myocardial performance after autologous adipose-derived (ASCs) mesenchymal stem cell differentiated under equiaxial cyclic strain, transplantation in rabbits with acute myocardial infarction (AMI). Design- Prospective, randomized experimental study Animals- 20 New Zealand White rabbits (2-3 kg) P...
OBJECTIVE Four-hour comparison of the bronchodilator response of albuterol administered via metered-dose inhaler (MDI) with spacer versus small-volume nebulizer (SVN) to mechanically ventilated patients with chronic obstructive pulmonary disease (COPD). DESIGN Prospective randomized clinical trial. SETTING Medical intensive care unit in a university hospital. PATIENTS Thirteen mechanicall...
Bone turnover is a mechanically regulated process, coordinated in part by the network of mechanosensitive osteocytes residing within the tissue. The recruitment and bone forming activity of the mesenchymal derived osteoblast is determined by numerous factors including mechanical loading. It is therefore somewhat surprising that although mechanically regulated signaling between the coordinating ...
PURPOSE To evaluate mechanically detachable coil designs capable of controlled and instantaneous release within an aneurysm or vascular space. METHODS Three mechanically detachable coil designs, clamped ball, looped ribbon, and interlocking cylinder, were evaluated using in vitro and in vivo testing to study reliability of coil release, retractability, and coil behavior in a microcatheters. I...
In vitro mechanical conditioning has been demonstrated to be of critical importance in the tissue engineering of cardiovascular substitutes, i.e. vascular grafts and heart valves. Therefore, after static culturing, cell seeded constructs are placed in a bioreactor and subjected to pulsatile loading conditions. The objective is to stimulate cell proliferation and differentiation as well as extra...
Mechanically interlocked and entangled molecular architectures represent one of the elaborate topological superstructures engineered at a molecular resolution. Here we report a methodology for fabricating mechanically selflocked molecules (MSMs) through highly efficient one-step amidation of a pseudorotaxane derived from dual functionalized pillar[5]arene (P[5]A) threaded by α,ω-diaminoalkane (...
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