نتایج جستجو برای: thermal lesion dimensions
تعداد نتایج: 463556 فیلتر نتایج به سال:
BACKGROUND The aim of this study is to research the lesion outline and temperature field in different ways in atrial radiofrequency ablation by using finite element method. METHODS This study used the method which considered the thermal dosage to determine the boundary between viable and dead tissue, and compared to the 50 °C isotherm results in analyzing lesion outline. Besides, we used Hype...
OBJECTIVE To identify any potential relations between the size of an emptied plaque cavity and the remodelling pattern, plaque or vessel dimensions, lumen narrowing, and other ultrasonic lesion characteristics. DESIGN Intravascular ultrasound was used to examine prospectively 51 ruptured ulcerated coronary plaques. Cross sectional area measurements comprised lumen, vessel, plaque, and emptied...
Using molecular dynamics simulations we study supercritical fluids near the gas-liquid critical point under heat flow in two dimensions. We calculate the steady-state temperature and density profiles. The resultant thermal conductivity exhibits critical singularity in agreement with the mode-coupling theory in two dimensions. We also calculate distributions of the momentum and heat fluxes at fi...
Background and Aim: Skin cancer is the most common type of cancer constitutes and 75% of all cancers in the world. Malignant melanoma is the most invasive and lethal form of skin cancer. The objective of this study was to evaluate infrared thermography in differentiation of benign and malignant skin lesions. Methods: This study was conducted on 120 patients (60 female, 60 male) with a lesio...
We have experimentally investigated the impact of dimensions and temperature on the thermal conductivity of silicon nanowires fabricated using a top-down approach. Both the width and temperature dependences of thermal conductivity agree with those in the existing literature. The length dependence of thermal conductivity exhibits a transition from semi-ballistic thermal phonon transport at 4 K t...
We describe neutron scattering, NMR relaxation, and thermal transport properties of Z2 spin liquids in two dimensions. Comparison to recent experiments on the spin S = 1/2 triangular lattice antiferromagnet in κ-(ET)2Cu2(CN)3 shows that this compound may realize a Z2 spin liquid. We argue that the topological ‘vison’ excitations dominate thermal transport, and that recent thermal conductivity e...
We describe neutron scattering, NMR relaxation, and thermal transport properties of Z2 spin liquids in two dimensions. Comparison to recent experiments on the spin S=1/2 triangular lattice antiferromagnet in kappa-(ET)2Cu2(CN)3 shows that this compound may realize a Z2 spin liquid. We argue that the topological "vison" excitations dominate thermal transport, and that recent thermal conductivity...
Individuals differ in thermosensitivity, thermoregulation, and zones of thermoneutrality and thermal comfort. Whereas temperature sensing and -effectuating processes occur in part unconsciously and autonomic, awareness of temperature and thermal preferences can affect thermoregulatory behavior as well. Quantification of trait-like individual differences of thermal preferences and experienced te...
مقدمه: مطالعات زیادی نشان می دهند تجویز حاد و مزمن دگزامتازون دارای اثرات پر دردی و ضد التهابی می باشد و استرس نیز اثرات متفاوتی چون بی دردی،پردردی و ضد التهابی را نشان می دهد اما این اثرات بر روی nociceptionدرغیاب فیبر های cکار نشده است. در مطالعه حاضر نقش فیبرهای c در اثرات بی دردی(analgesic )، پردردی(hyperalgesic )، التهابی(proinflammatory ) و ضدالتهابی(anti-inflammatory ) دگزامتازون و استرس...
Sluijter et al.8 assumed that, because the tissue temperature was kept below the thermal destructive range, thermal tissue injury was avoided. By using mathematical calculations, they further showed that the high-density electrical currents generated at the electrode tip stressed the cellular membranes and biomolecules and caused altered cell function, leading to cell injury. Later investigator...
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