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https://www.readbyqxmd.com/read/28737502/intrinsic-plasmaron-in-warm-graphene
#1
Daqing Liu, Shueyue Chen, Shengli Zhang, Ning Ma
Basing on a self-consistent method, we predict theoretically that there exists intrinsic plasmaron in graphene at nonzero temperature and it is a well defined mode, as shown by the result of Landau damping. We find that there are sharp differences between the discussed system and the QCD/QED system. Firstly, the thermal mass is proportional to α<sub>g</sub><sup>3/4</sup>T but not α<sub>g</sub>T. Secondly, at long wavelength region, the fermion channel and plasmaron channel are nearly degenerate and furthermore, the energy difference between fermion and plasmaron becomes more and more larger with increasing q at the region q>q<sub>c</sub>...
July 24, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28734285/extension-of-the-d3-dispersion-coefficient-model
#2
Eike Caldeweyher, Christoph Bannwarth, Stefan Grimme
A new model, termed D4, for the efficient computation of molecular dipole-dipole dispersion coefficients is presented. As in the related, well established D3 scheme, these are obtained as a sum of atom-in-molecule dispersion coefficients over atom pairs. Both models make use of dynamic polarizabilities obtained from first-principles time-dependent density functional theory calculations for atoms in different chemical environments employing fractional atomic coordination numbers for interpolation. Different from the D3 model, the coefficients are obtained on-the-fly by numerical Casimir-Polder integration of the dynamic, atomic polarizabilities α(iω)...
July 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28734284/cage-model-of-polar-fluids-finite-cage-inertia-generalization
#3
W T Coffey, M Zarifakis, Y P Kalmykov, S V Titov, W J Dowling, A S Titov
The itinerant oscillator model describing rotation of a dipole about a fixed axis inside a cage formed by its surrounding polar molecules is revisited in the context of modeling the dielectric relaxation of a polar fluid via the Langevin equation. The dynamical properties of the model are studied by averaging the Langevin equations describing the complex orientational dynamics of two bodies (molecule-cage) over their realizations in phase space so that the problem reduces to solving a system of three index linear differential-recurrence relations for the statistical moments...
July 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28733885/a-simple-and-rapid-in-vitro-test-for-large-scale-screening-of-fungal-endophytes-from-drought-adapted-australian-wild-plants-for-conferring-water-deprivation-tolerance-and-growth-promotion-in-nicotiana-benthamiana-seedlings
#4
Khondoker M G Dastogeer, Hua Li, Krishnapillai Sivasithamparam, Michael G K Jones, Stephen J Wylie
Some fungal endophytes confer novel phenotypes and enhance existing ones in plants, including tolerance to water deprivation stress. A range of fungal endophytes was isolated from wild Nicotiana plants growing in arid parts of northern Australia. These were screened for ability to enhance water deprivation stress tolerance by inoculating seedlings of the model plant N. benthamiana in two in vitro tests. Sixty-eight endophyte isolates were co-cultivated with N. benthamiana seedlings on either damp filter paper or on agar medium before being subjected to water deprivation...
July 21, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28733578/protecting-quantum-fisher-information-of-n-qubit-ghz-state-by-weak-measurement-with-flips-against-dissipation
#5
Yu Chen, Jian Zou, Zheng-Wen Long, Bin Shao
In this paper we propose a scheme by using weak-measurement-based pre- and post-flips (WMPPF) to protect the average quantum Fisher information (QFI) in the independent amplitude-damping channel (ADC) for N-qubit GHZ state and generalized N-qubit GHZ states. We also discuss the weak measurement and quantum measurement reversal (WMQMR) with the same ADC. Based on the analytical and numerical results we obtain the main result: the WMPPF can reduce the effect of dissipation on the average QFI of the phase or the frequency for GHZ state and some generalized GHZ states, and the WMQMR can reduce the effect of dissipation on the average fidelity for GHZ state and generalized GHZ states in ADC...
July 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28732778/functional-analysis-of-the-mapk-pathways-in-fungi
#6
Domingo Martínez-Soto, José Ruiz-Herrera
The Mitogen-Activated Protein Kinase (MAPK) signaling pathways constitute one of the most important and evolutionarily conserved mechanisms for the perception of extracellular information in all the eukaryotic organisms. The MAPK pathways are involved in the transfer to the cell of the information perceived from extracellular stimuli, with the final outcome of activation of different transcription factors that regulate gene expression in response to them. In all species of fungi, the MAPK pathways have important roles in their physiology and development; e...
July 18, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28732159/remote-single-molecule-switching-identification-and-nano-engineering-of-hot-electron-induced-tautomerization
#7
Jens Kügel, Markus Leisegang, Markus Böhme, Andreas Krönlein, Aimee Sixta, Matthias Bode
Molecular electronics where single molecules perform basic functionalities of digital circuits is a fascinating concept that one day may augment or even replace nowadays semiconductor technologies. The tautomerization of molecules, i.e., the bistable functional position of hydrogen protons within an organic frame, has recently been intensively discussed as a potential avenue towards nano-scale switches. It has been shown that tautomerization can be triggered locally or non-locally, i.e. by a scanning tunneling microscope (STM) tip positioned directly above or in close vicinity to the molecule...
July 21, 2017: Nano Letters
https://www.readbyqxmd.com/read/28729393/time-course-effects-of-aerobic-physical-training-in-the-prevention-of-cigarette-smoke-induced-copd
#8
Alessandra Choqueta Toledo-Arruda, Rodolfo Paula Vieira, Flavia Alessandra Guarnier, Camila Liyoko Suehiro, Agostinho Caleman-Neto, Clarice Rosa Olivo, Petra Mello Motta Arantes, Francine Maria Almeida, Fernanda Degobbi Tenorio Quirino Dos Santos Lopes, Ercy Mara Cipulo Ramos, Rubens Cecchini, Chin Jia Lin, Mílton A Martins
A previous study by our group showed that regular exercise training (ET) attenuated pulmonary injury in an experimental model of chronic exposure to cigarette smoke (CS) in mice, but the time-course effects of the mechanisms involved in this protection remain poorly understood. We evaluated the temporal effects of regular ET in an experimental model of chronic CS exposure. MaleC57BL/6 mice were divided into four groups: Control (sedentary+air), Exercise (aerobic training+air), Smoke (sedentary+smoke) and Smoke+Exercise (aerobic training+smoke)...
July 20, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28724800/siglec-g-represses-damp-mediated-effects-on-t-cells
#9
Tomomi Toubai, Corinne Rossi, Katherine Oravecz-Wilson, Cynthia Zajac, Chen Liu, Thomas Braun, Hideaki Fujiwara, Julia Wu, Yaping Sun, Stuart Brabbs, Hiroya Tamaki, John Magenau, Pang Zheng, Yang Liu, Pavan Reddy
The role of negative regulators or suppressors of the damage-associated molecular pattern-mediated (DAMP-mediated) stimulation of innate immune responses is being increasingly appreciated. However, the presence and function of suppressors of DAMP-mediated effects on T cells, and whether they can be targeted to mitigate T cell-dependent immunopathology remain unknown. Sialic acid-binding immunoglobulin-like lectin G (Siglec-G) is a negative regulator of DAMP-mediated responses in innate immune cells, but its T cell-autonomous role is unknown...
July 20, 2017: JCI Insight
https://www.readbyqxmd.com/read/28723682/release-of-danger-associated-molecular-patterns-following-chemotherapy-does-not-induce-immunoparalysis-in-leukemia-patients
#10
Kim Timmermans, Guus P Leijte, Matthijs Kox, Gert Jan Scheffer, Nicole M A Blijlevens, Peter P Pickkers
Chemotherapy may result in the release of danger-associated molecular patterns (DAMPs), which can cause immunoparalysis (deactivation of the immune system). We investigated DAMPs following chemotherapy and their relationship with markers of immunoparalysis in leukemia patients. In 6 patients with acute myeloid leukemia or myelodysplastic syndrome and 12 healthy subjects, DAMPs, cytokines, and markers of immunoparalysis were determined before and during the first week after chemotherapy initiation. In the patients, plasma levels of nuclear DNA (a marker of general DAMP release) were profoundly increased before chemotherapy and further increased 4-6 h afterwards, while the specific DAMP mitochondrial DNA showed only a trend towards increase...
July 20, 2017: Acta Haematologica
https://www.readbyqxmd.com/read/28722681/the-role-of-toll-like-receptor-4-in-tumor-microenvironment
#11
REVIEW
Jing Li, Fan Yang, Feng Wei, Xiubao Ren
Tumors are closely related to chronic inflammation, during which there are various changes in inflammatory sites, such as immune cells infiltration, pro-inflammation cytokines production, and interaction between immune cells and tissue cells. Besides, substances, released from both tissue cells attacked by exogenous etiologies, also act on local cells. These changes induce a dynamic and complex microenvironment favorable for tumor growth, invasion, and metastasis. The toll-like receptor 4 (TLR4) is the first identified member of the toll-like receptor family that can recognize pathogen-associated molecular patterns (PAMPs) and damage-associated molecular pattern (DAMPs)...
July 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28720850/energy-dissipation-pathways-in-few-layer-mos2-nanoelectromechanical-systems
#12
Bernard R Matis, Brian H Houston, Jeffrey W Baldwin
Free standing, atomically thin transition metal dichalcogenides are a new class of ultralightweight nanoelectromechanical systems with potentially game-changing electro- and opto-mechanical properties, however, the energy dissipation pathways that fundamentally limit the performance of these systems is still poorly understood. Here, we identify the dominant energy dissipation pathways in few-layer MoS2 nanoelectromechanical systems. The low temperature quality factors and resonant frequencies are shown to significantly decrease upon heating to 293 K, and we find the temperature dependence of the energy dissipation can be explained when accounting for both intrinsic and extrinsic damping sources...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28718635/undervalued-n3-coordination-revealed-in-the-cisplatin-complex-with-2-deoxyadenosine-5-monophosphate-by-a-combined-irmpd-and-theoretical-study
#13
Barbara Chiavarino, Maria Elisa Crestoni, Simonetta Fornarini, Debora Scuderi, Jean-Yves Salpin
The complex obtained by the reaction of cisplatin and 2'-deoxyadenosine-5'-monophosphate (5'-dAMP) in water has been isolated and detected by electrospray ionization mass spectrometry. The so-formed cis-[PtCl(NH3)2(5'-dAMP)](+) complex has been studied in detail by infrared multiple photon dissociation (IRMPD) spectroscopy in two spectral ranges, namely, 700-1900 and 2800-3800 cm(-1), backed by quantum-chemical calculations at the B3LYP/LACV3P/6-311G** level of theory. In agreement with the computational results, the vibrational spectroscopic characterization of cis-[PtCl(NH3)2(5'-dAMP)](+) shows that the sampled ionic population comprises two major isomers, differentiated in the X-H stretching region by their distinct fragmentation patterns...
July 18, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28718619/radial-dopant-placement-for-tuning-plasmonic-properties-in-metal-oxide-nanocrystals
#14
Brandon M Crockett, Adam W Jansons, Kristopher M Koskela, Darren W Johnson, James E Hutchison
Doped metal oxide nanocrystals that exhibit tunable localized surface plasmon resonances (LSPRs) represent an intriguing class of nanomaterials that show promise for a variety of applications from spectroscopy to sensing. LSPRs arise in these materials through the introduction of aliovalent dopants and lattice oxygen vacancies. Tuning the LSPR shape and energy is generally accomplished through controlling the concentration or identity of dopants in a nanocrystal, but the lack of finer synthetic control leaves several fundamental questions unanswered regarding the effects of radial dopant placement, size, and nanocrystalline architecture on the LSPR energy and damping...
July 18, 2017: ACS Nano
https://www.readbyqxmd.com/read/28715328/recovery-of-damped-exponentials-using-structured-low-rank-matrix-completion
#15
Arvind Balachandrasekaran, Vincent Magnotta, Mathews Jacob
We introduce a structured low rank matrix completion algorithm to recover a series of images from their undersampled measurements, where the signal along the parameter dimension at every pixel is described by a linear combination of exponentials. We exploit the exponential behavior of the signal at every pixel, along with the spatial smoothness of the exponential parameters to derive an annihilation relation in the Fourier domain. This relation translates to a low-rank property on a structured matrix constructed from the Fourier samples...
July 14, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28714853/unveiling-the-development-of-intracranial-injury-using-dynamic-brain-eit-an-evaluation-of-current-reconstruction-algorithms
#16
Haoting Li, Rongqing Chen, Canhua Xu, Benyuan Liu, Mengxing Tang, Lin Yang, Xiuzhen Dong, Feng Fu
Dynamic brain EIT is a promising technique for continuous monitoring the development of cerebral injury. While there are many reconstruction algorithms available to brain EIT, there is still a lack of study to compare their performance in the context of dynamic brain monitoring. To address the problem, we develop a framework for evaluating different current algorithms with their ability to correctly identify small intracranial conductivity changes. Firstly, a simulation 3D head phantom with realistic layered structure and impedance distribution were developed...
July 17, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28714249/simultaneous-magnetic-resonance-diffusion-and-pseudo-diffusion-tensor-imaging
#17
Meghdoot Mozumder, Leandro Beltrachini, Quinten Collier, Jose M Pozo, Alejandro F Frangi
PURPOSE: An emerging topic in diffusion magnetic resonance is imaging blood microcirculation alongside water diffusion using the intravoxel incoherent motion (IVIM) model. Recently, a combined IVIM diffusion tensor imaging (IVIM-DTI) model was proposed, which accounts for both anisotropic pseudo-diffusion due to blood microcirculation and anisotropic diffusion due to tissue microstructures. In this article, we propose a robust IVIM-DTI approach for simultaneous diffusion and pseudo-diffusion tensor imaging...
July 16, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28713825/the-serum-analysis-of-dampness-syndrome-in-patients-with-coronary-heart-disease-and-chronic-renal-failure-based-on-the-theory-of-same-syndromes-in-different-diseases
#18
Yiming Hao, Xue Yuan, Peng Qian, Guanfeng Bai, Yiqin Wang
AIM: To analyze the serum metabolites in patients with coronary heart disease (CHD) showing dampness syndrome and patients with chronic renal failure (CRF) showing dampness syndrome and to seek the substance that serves as the underlying basis of dampness syndrome in "same syndromes in different diseases." Methods. Metabolic spectrum by GC-MS was performed using serum samples from 29 patients with CHD showing dampness syndrome and 32 patients with CRF showing dampness syndrome. The principal component analysis and statistical analysis of partial least squares were performed to detect the metabolites with different levels of expression in patients with CHD and CRF...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28712474/postherpetic-neuralgia-practical-experiences-return-to-traditional-chinese-medicine
#19
REVIEW
Majid Avijgan, Seyedeh Tahoora Hajzargarbashi, Aliasghar Kamran, Mahtab Avijgan
Post-herpetic neuralgia (PHN) is a complication of herpes zoster that can cause different types of pain in the affected area. It often occurs mainly in severe cases of herpes zoster. The problem is defined as a persisting pain for 90-120 days after relieving of acute phase of herpes lesions. This complication causes suffering in patients and reduces the quality of life. In western medicine's viewpoints, PHN is due to disturbance in local and dermatomal nerves. There are several topical and systemic drugs that are used to manage the pain relief...
June 2017: Journal of Acupuncture and Meridian Studies
https://www.readbyqxmd.com/read/28710082/accuracy-and-precision-of-venous-pressure-measurements-of-endovascular-microcatheters-in-the-setting-of-dural-venous-sinus-stenosis
#20
Michael B Avery, Sheryl Sambrano, Javed Khader Eliyas, Muneer Eesa, Alim P Mitha
INTRODUCTION: Dural venous sinus stenosis (DVSS) may lead to increased intracranial pressure, sometimes requiring a stent if a high pressure gradient exists. Many neuroendovascular physicians use microcatheters to measure gradients, yet there are no studies comparing the accuracies and precisions of modern day microcatheters. We examined pressure recordings from five commonly used microcatheters in an experimental DVSS model. METHODS: Using a programmable pump, dynamic flow was established in a closed circuit mimicking the venous sinus waveform...
July 14, 2017: Journal of Neurointerventional Surgery
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