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Welcome to the Pubget Medical Subject Headings (MESH) browser. Click on a topic or subtopic below to explore related papers. In the gold box is the most recent paper about the current MESH term, and below are 20 related papers.
Physical Phenomena (11):
Recent article
Physical Phenomena
Abstract
We review current experiments with implications for the origin of life, emphasizing the ability of unexpected physical processes to facilitate the self-assembly and self-replication of the first biological systems. These laboratory efforts have uncovered novel physical mechanisms for the emergence o...
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PMID: 20192779
PDF is available here.
PDF is available here.
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Scientific American (302)1 2010
Abstract
Abstract
We focus on the physical aspects of these agents, exploring microbubble imaging modes, models for microbubble oscillation and the interaction of the microbubble with the endothelium....
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PMID: 19229096
PDF is available here.
PDF is available here.
Abstract
We numerically investigate the development of generalized synchronization (GS) on typical complex networks, such as scale-free networks, small-world networks, random networks, and modular networks. By adopting the auxiliary-system approach to networks, we observe that GS generally takes place in osc...
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PMID: 19334994
PDF is available here.
PDF is available here.
Acta Oncologica (48)2 2009
Abstract
The flexibility in radiotherapy can be improved if a patient can be moved between any one of the department's medical linear accelerators without the need to change anything in the patient's treatment plan. For this to be possible, the dosimetric characteristics of the various accelerators must be t...
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PMID: 18752079
PDF is available here.
PDF is available here.
Medical Hypotheses (71)5 2008
Abstract
Based on related prior research, it is suggested that seeing one's animated reflection, in a mirror, should be considered to be an act of imagining; also, that seeing oneself in a mirror during physical exercise should increase the muscular effects of that exercise. Further argued, on the basis of t...
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PMID: 18691827
PDF is available here.
PDF is available here.
Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment and General Theory (112)31 2008
Abstract
The photophysical properties, such as the UV-vis absorption spectra, triplet transient difference absorption spectra, triplet excited-state extinction coefficients, quantum yields of the triplet excited state, and lifetimes of the triplet excited state, of 10 novel zinc phthalocyanine derivatives wi...
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PMID: 18616331
PDF is available here.
PDF is available here.
Anaesthesia (63)8 2008
Abstract
High intensity focused ultrasound (HIFU) is a treatment modality for tissue ablation with an expanding range of indications. It is helpful to understand its basic principles, the physiological changes induced, and the pathophysiology of the patient groups undergoing HIFU. HIFU is usually performed i...
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PMID: 18699899
PDF is available here.
PDF is available here.
Abstract
Decision under risk and uncertainty has been attracting attention in neuroeconomics and neuroendocrinology of decision-making. This paper demonstrated that the neurotransmitter receptor theory-based value (utility) function can account for human and animal risk-taking behavior. The theory predicts t...
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PMID: 18766164
PDF is available here.
PDF is available here.
Abstract
When calibrating a broadband active acoustic system with a single standard target such as a sphere, the inherent resonances associated with the scattering by the sphere pose a significant challenge. In this paper, a method is developed which completely eliminates the source of resonances through iso...
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PMID: 18646960
PDF is available here.
PDF is available here.
Abstract
Natural rates of chemical production, release, and transport of fluid-borne molecules drive fundamental biological responses to these stimuli. The scaling of the field signaling environment to laboratory conditions recreates essential features of the dynamics and establishes ecological relevance. If...
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PMID: 18521680
PDF is available here.
PDF is available here.
Journal of Physical Chemistry B (112)25 2008
Abstract
We present here the results of DsRed multiparameter single molecule spectroscopy. By combination of spectral and time domain spectroscopy, we were able to isolate single tetramers containing only green chromophores and thus record the fluorescence lifetime of the green emitting species without inter...
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PMID: 18528973
PDF is available here.
PDF is available here.
Abstract
We consider anatomical imaging techniques. Biological imaging is considered in another article. Anatomical imaging is generally used for goals (i) and (ii) above. Computed tomography (CT) has been the mainstay of anatomical treatment planning for many years, enabling some delineation of soft tissue...
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PMID: 18495981
PDF is available here.
PDF is available here.
Mathematical Biosciences (213)2 2008
Abstract
During the cell division dynamic processes take place, the origin of which are to find in the physical characteristics of cell components. The most important characteristics are the electrical charge and the energy of the moving base components in a viscous cytoplasm. The interactions between the co...
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PMID: 18539187
PDF is available here.
PDF is available here.
Abstract
This paper describes an experimentally oriented medical imaging course where the students record, process and analyse 3D data of an unknown piece of formalin fixed porcine tissue hidden in agar in order to estimate the tissue types present in a selected 2D slice. The recorded planar X-ray, CT, MRI,...
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PMID: 17716937
PDF is available here.
PDF is available here.
Abstract
Painless control of blood glycemic levels could improve life quality of diabetes patients, enabling a better regulation of hyper- and hypoglycaemia episodes and thereby avoiding physiological complications. Although research groups have been trying for decades to separate non-invasive glucose inform...
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PMID: 17942360
PDF is available here.
PDF is available here.
Abstract
This work presents a forced synchronization phenomenon like the asymptotic correlated behavior between chaotic oscillators forced by an external signal. Different kinds of forced synchronization are presented and given a theoretical justification explaining why it is possible to find some of them. N...
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PMID: 18601502
PDF is available here.
PDF is available here.
Abstract
We review a number of phenomena occurring in one-dimensional excitable media due to modified decay behind propagating pulses. Those phenomena can be grouped in two categories depending on whether the wake of a solitary pulse is oscillatory or not. Oscillatory decay leads to nonannihilative head-on c...
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PMID: 18601506
PDF is available here.
PDF is available here.
Pediatric Radiology (38 Suppl 2) 2008
Abstract
Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances & Environmental Engineering (43)6 2008
Abstract
Determining hydrocarbon plumes in groundwater is typically accomplished through the installation of extensive monitoring wells. Issues of scale and site heterogeneities tend to introduce errors in delineating the extent of contamination and environmental impact. In this study, electromagnetic induct...
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PMID: 18393065
PDF is available here.
PDF is available here.
Physical Review Letters (100)17 2008
Abstract
We study the extent of the conformal window for an SU(3) gauge theory with N{f} Dirac fermions in the fundamental representation. We present lattice evidence for 12
PDF is available here.
PDF is available here.
Abstract
Journal of Physical Chemistry B (112)11 2008
Abstract
The steady-state and time-resolved studies of the sensitized emission of the excited-state proton transfer (ESIPT) probe 3-hydroxy-2-naphthoic acid (3HNA) when bound to bovine serum albumin (BSA) and human serum albumin (HSA) indicate that the nonradiative dipole-dipole Förster type energy transfer...
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PMID: 18293954
PDF is available here.
PDF is available here.
Abstract
We examined indoor formaldehyde concentrations in a gross anatomy laboratory. Air samples were taken from 20, 110, 160, and 230 cm above the floor between dissection beds to represent areas near the floor, in the breathing zone of sitting students, in the breathing zone of standing students, and nea...
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PMID: 18416107
PDF is available here.
PDF is available here.
Medical Physics (35)3 2008
Abstract
The last 50 years have seen great advances in the accuracy of external beam radiation therapy. Geometrical uncertainties have been reduced from a centimeter or more in presimulation, skin-mark guided days to 1-2 mm in today's image-guided radiation therapy treatments. Medical physicists, with the su...
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PMID: 18404920
PDF is available here.
PDF is available here.
Abstract
We describe here experimental systems based on lipid giant unilamellar vesicles (GUVs), which are attached to kinesin molecules. These systems give rise to thin membrane tubes and to complex tubular networks when incubated in vitro with microtubules and ATP. This type of assay, which mimics key even...
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PMID: 18375584
PDF is available here.
PDF is available here.
EMS magazine (37)3 2008
Abstract
It is estimated that a lightning flash occurs approximately 8 million times per day throughout the world. Most strikes are benign and cause little damage to property and physical structures; however, when lightning strikes a person or group of people, it is a significant medical and potentially trau...
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PMID: 18814638
PDF is available here.
PDF is available here.
Behavioural Processes (77)3 2008
Abstract
We speculate that the degree of contact between a tool and a reward influenced people's behavior because contact and physical connection are often correlated in people's natural environments and because contact is a reliable predictor of physical connection....
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PMID: 17890016
PDF is available here.
PDF is available here.
Inorganic Chemistry (47)2 2008
Abstract
We report here the design of the first class of luminescent biotinylation reagents derived from rhenium(I) polypyridine complexes. These complexes [Re(N-N)(CO)(3)(py-biotin-NCS)](PF(6)) (py-biotin-NCS = 3-isothiocyanato-5-(N-((2-biotinamido)ethyl)aminocarbonyl)pyridine; N-N = 1,10-phenanthroline (ph...
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PMID: 18088115
PDF is available here.
PDF is available here.
Abstract
Abstract
The paper provides data on the complex influence of space geophysical factors and meteoreological conditions on the body's nonspecific resistance (BNSR) in Saint Petersburg dwellers. Associations and relationships have been established between the environmental parameters. The leading factors negati...
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PMID: 18365452
PDF is available here.
PDF is available here.
Ultrasonic Imaging (30)1 2008
Abstract
The Rankine-Hugoniot relation for shock wave propagation describes the shock speed of a nonlinear wave. This paper investigates time-domain numerical methods that solve the nonlinear parabolic wave equation, or the Khokhlov-Zabolotskaya-Kuznetsov (KZK) equation, and the conditions they require to sa...
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PMID: 18564596
PDF is available here.
PDF is available here.
Abstract
Protein aggregation is a commonly occurring problem in biology. Cells have evolved stress-response mechanisms to cope with problems posed by protein aggregation. Yet, these quality control mechanisms are overwhelmed by chronic aggregation-related stress and the resultant consequences of aggregation...
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PMID: 17931593
PDF is available here.
PDF is available here.
Abstract
Recent years have seen a significant increase in the use of Interventional Radiology (IR) as an alternative to open surgery. A large number of IR procedures commences with needle puncture of a vessel to insert guidewires and catheters: these clinical skills are acquired by all radiologists during tr...
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PMID: 18391285
PDF is available here.
PDF is available here.
Abstract
We present such a system for the first time in this paper. We have implemented a physics-based model of electrosurgery to control the temperature distribution on the tissue as a function of time. Then, we evaluate the algorithm within a complete graphics-haptics-physics-based system....
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PMID: 18391303
PDF is available here.
PDF is available here.
Abstract
Modern brachytherapy has led to effective treatments through the establishment of broadly applicable dosimetric thresholds for maximizing survival with minimal morbidity. Proper implementation of recent dosimetric consensus statements and quality assurance procedures is necessary to maintain the est...
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PMID: 18406914
PDF is available here.
PDF is available here.
Abstract
State-of-the-art radiotherapy treatment delivery has changed dramatically during the past decade, moving from manual individual field setup and treatment to automated computer-controlled delivery of complex treatments, including intensity-modulated radiotherapy and other similarly complex delivery s...
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PMID: 18406948
PDF is available here.
PDF is available here.
Abstract
The formation spectra of model KN and KNN systems formed by (K(-),n) reactions are investigated in order to obtain a theoretical basis for a proper interpretation of experimental data concerning kaonic nuclear quasi-bound states. It has been clarified that the experimentally observable kaonic nuclea...
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PMID: 18941302
PDF is available here.
PDF is available here.
Abstract
Lava domes are one of the conspicuous topographic features on volcanoes. The subsurface structure of the lava dome is important to discuss its formation mechanism. In the 1944 eruption of Volcano Usu, Hokkaido, a new lava dome was formed at its eastern foot. After the completion of the lava dome, va...
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PMID: 18941290
PDF is available here.
PDF is available here.
Abstract
Abstract
The runners-up for 2007's Breakthrough of the Year include advances in cellular and structural biology, astrophysics, physics, immunology, synthetic chemistry, neuroscience, and computer science.
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PMID: 18096772
PDF is available here.
PDF is available here.
Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment and General Theory (111)50 2007
Abstract
We show that this model is uniquely identifiable. This means that all deactivation and exchange rate constants in the excited state and all spectral parameters associated with photoexcitation and fluorescence emission can be uniquely determined. The issues of controllability and observability are di...
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PMID: 18004826
PDF is available here.
PDF is available here.
Medical Physics (34)12 2007
Abstract
Medical Physics (34)12 2007
Abstract
We examine possible data types for time resolved fluorescence enhanced diffuse optical tomography (FDOT). FDOT is a particular case of diffuse optical tomography, where our goal is to analyze fluorophores deeply embedded in a turbid medium. We focus on the relative robustness of the different sets o...
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PMID: 18196814
PDF is available here.
PDF is available here.
Abstract
In this paper, the antisynchronization problems of a class of chaotic delayed neural networks are investigated. Some criteria of the antisynchronization of the chaotic delayed neural networks are established by using the linear matrix inequality and Lyapunov stability theory. These criteria not only...
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PMID: 18163786
PDF is available here.
PDF is available here.
Abstract
We investigate the quantization of a free particle coupled linearly to a harmonic oscillator. This system, whose classical counterpart has clearly separated regular and chaotic regions, provides an ideal framework for studying the quantization of mixed systems. We identify key signatures of the clas...
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PMID: 18163794
PDF is available here.
PDF is available here.
Abstract
Abstract
We consider pairs of toral automorphisms (A,B) satisfying an invariant cone property. At each iteration, A acts with probability p is in (0,1) and B with probability 1-p. We prove exponential decay of correlations for a class of Hölder continuous observables.
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PMID: 18163780
PDF is available here.
PDF is available here.
The Journal of Chemical Physics (127)17 2007
Abstract
We demonstrate that the linear response theory of interface friction presented by Bocquet and Barrat [Phys. Rev. E 49, 3079 (1994)] results in a friction coefficient that is not an intrinsic property of the interface and thus does not correspond to the actual interfacial friction coefficient. We poi...
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PMID: 17994841
PDF is available here.
PDF is available here.
Inorganic Chemistry (46)22 2007
Abstract
We report the synthesis, characterization, and photophysical properties of a series of organic receptors and their corresponding ReI and RuII metal complexes as anion probes featuring bis(sulfonamide) interacting sites incorporating highly chromophoric pi-conjugated quinoxaline moieties. The interac...
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PMID: 17867683
PDF is available here.
PDF is available here.
Biochemistry (Washington) (46)43 2007
Abstract
In the preceding accompanying paper [Shu, X., et al. (2007) Biochemistry 46, 12005-12013], the 1.5 A resolution crystal structure of green fluorescent protein (GFP) variant S65T/H148D is presented, and the possible consequences of an unusual short hydrogen bond (
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PMID: 17918960
PDF is available here.
PDF is available here.
Abstract
We provide evidence for an extraterrestrial (ET) impact event at approximately equal 12.9 ka, which we hypothesize caused abrupt environmental changes that contributed to YD cooling, major ecological reorganization, broad-scale extinctions, and rapid human behavioral shifts at the end of the Clovis...
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PMID: 17901202
PDF is available here.
PDF is available here.
Psychoanalytic review (94)5 2007
Abstract
Abstract
Target localization throughout each treatment beam can be quickly assessed with the presented technique. Treatment monitoring with an EPID in cine mode is shown to be a clinically feasible and useful tool....
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PMID: 17707280
PDF is available here.
PDF is available here.
Critical Care Medicine (35)8 Suppl 2007
Abstract
A thorough understanding of the physics of ultrasound waves and the instrumentation will provide the user with a better understanding of the capabilities and limitations of ultrasound equipment. The ultrasound machine combines two technologies: image production (M-mode and 2-dimensional imaging) wit...
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PMID: 17667455
PDF is available here.
PDF is available here.
Abstract
The spectroscopic and photophysical properties of a typical dithiobenzoate reversible addition-fragmentation chain transfer (RAFT) polymerization agent alone in solution, as a quencher of electronically excited acenaphthene in solution, and in an acenaphthene donor-dithiobenzoate acceptor dichromoph...
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PMID: 17668115
PDF is available here.
PDF is available here.
Abstract
We derive the prototypic correlation formula originally determined by Redpath (Magn Res Med 1992;24:85-89), which states that correlation of current spectral noise depends on the real part of the inverse impedance matrix at a given frequency. A distinct correlation formula is also derived using the...
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PMID: 17654588
PDF is available here.
PDF is available here.
Abstract
Helical tomotherapy SBRT for lung lesions is well-tolerated. In addition, the likely MAD for patients considered for this type of treatment can be predicted by PTV and lung volume....
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PMID: 17513066
PDF is available here.
PDF is available here.
Abstract
The shifts were largest for the prostate, followed by the head and neck, with glioblastoma multiforme having the smallest shifts in general. It appears that it might be more appropriate to use asymmetric planning target volume margins. Each margin value reported is equal to two standard deviations o...
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PMID: 17637395
PDF is available here.
PDF is available here.
Abstract
Neutron fluence per monitor unit was approximately 20% lower when the accelerator was operated in the FFF mode than when it was in FF mode. The total amount of neutron fluence that would be obtained during the entire course of prostate intensity-modulate radiotherapy was 69% lower when the accelerat...
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PMID: 17637397
PDF is available here.
PDF is available here.