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https://www.readbyqxmd.com/read/28339224/optical-manipulation-of-a-magnon-photon-hybrid-system
#1
C Braggio, G Carugno, M Guarise, A Ortolan, G Ruoso
We demonstrate an all-optical method for manipulating the magnetization in a 1-mm yttrium-iron-garnet (YIG) sphere placed in a ∼0.17  T uniform magnetic field. A harmonic of the frequency comb delivered by a multi-GHz infrared laser source is tuned to the Larmor frequency of the YIG sphere to drive magnetization oscillations, which in turn give rise to a radiation field used to thoroughly investigate the phenomenon. The radiation damping issue that occurs at high frequency and in the presence of highly magnetizated materials has been overcome by exploiting the magnon-photon strong coupling regime in microwave cavities...
March 10, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28338748/role-of-scavenger-receptors-as-damage-associated-molecular-pattern-receptors-in-toll-like-receptor-activation
#2
Kyoko Komai, Takashi Shichita, Minako Ito, Mitsuhiro Kanamori, Shunsuke Chikuma, Akihiko Yoshimura
Damage-associated molecular patterns (DAMPs) have been implicated in sterile inflammation in various tissue injuries. High-mobility group box 1 (HMGB1) is a representative DAMP, and has been shown to transmit signals through receptors for advanced glycation end products (RAGEs) and TLRs, including TLR2 and TLR4. HMGB1 does not, however, bind to TLRs with high affinity; therefore, the mechanism of HMGB1-mediated TLR activation remains unclear. In this study, we found that fluorescently labeled HMGB1 was efficiently internalized into macrophages through class A scavenger receptors...
February 24, 2017: International Immunology
https://www.readbyqxmd.com/read/28338473/impact-absorption-properties-of-carbon-fiber-reinforced-bucky-sponges
#3
Ramathasan Thevamaran, Deepika Saini, Mehmet Karakaya, Jingyi Zhu, Ramakrishna Podila, Apparao Rao, Chiara Daraio
We describe the super compressible and highly recoverable response of bucky sponges as they are struck by a heavy flat-punch striker. The bucky sponges studied here are structurally stable, self-assembled mixtures of multiwalled carbon nanotubes (MWCNTs) and carbon fibers (CFs). We engineered the microstructure of the sponges by controlling their porosity using different CF contents. Their mechanical properties and energy dissipation characteristics during impact loading are presented as a function of their composition...
March 24, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28336663/-c-ii-158-%C3%AE-m-emission-from-the-host-galaxies-of-damped-lyman-alpha-systems
#4
Marcel Neeleman, Nissim Kanekar, J Xavier Prochaska, Marc Rafelski, Chris L Carilli, Arthur M Wolfe
Gas surrounding high-redshift galaxies has been studied through observations of absorption line systems toward background quasars for decades. However, it has proven difficult to identify and characterize the galaxies associated with these absorbers due to the intrinsic faintness of the galaxies compared with the quasars at optical wavelengths. Using the Atacama Large Millimeter/Submillimeter Array, we report on detections of [C ii] 158-μm line and dust-continuum emission from two galaxies associated with two such absorbers at a redshift of z ~ 4...
March 24, 2017: Science
https://www.readbyqxmd.com/read/28336469/a-review-of-the-ethnopharmacology-phytochemistry-and-pharmacology-of-notopterygium-incisum
#5
REVIEW
John Teye Azietaku, Huifen Ma, Xie-An Yu, Jin Li, Mahmood Brobbey Oppong, Jun Cao, Mingrui An, Yan-Xu Chang
ETHNOPHARMACOLOGICAL RELEVANCE: Notopterygium incisum Ting ex H.T. Chang, known in Chinese as 'Qianghuo' is a traditional Chinese medicinal herb with the rhizome and roots associated with meridians of the kidney and urinary bladder. It is pungent, bitter and warm in nature. It has been used over the years to disperse cold, prevent painful obstructions from wind, damp and warm pain. It has also been used with other herbs to treat wind-cold exterior syndrome and wind-cold-damp bi-syndromes and has been known to grow well in regions of high altitude such as Gansu, Tibet etc...
March 20, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28335290/the-effect-of-viscous-air-damping-on-an-optically-actuated-multilayer-mos%C3%A2-nanomechanical-resonator-using-fabry-perot-interference
#6
Yumei She, Cheng Li, Tian Lan, Xiaobin Peng, Qianwen Liu, Shangchun Fan
We demonstrated a multilayer molybdenum disulfide (MoS₂) nanomechanical resonator by using optical Fabry-Perot (F-P) interferometric excitation and detection. The thin circular MoS₂ nanomembrane with an approximate 8-nm thickness was transferred onto the endface of a ferrule with an inner diameter of 125 μm, which created a low finesse F-P interferometer with a cavity length of 39.92 μm. The effects of temperature and viscous air damping on resonance behavior of the resonator were investigated in the range of -10-80 °C...
September 5, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335217/modification-of-the-interfacial-interaction-between-carbon-fiber-and-epoxy-with-carbon-hybrid-materials
#7
Kejing Yu, Menglei Wang, Junqing Wu, Kun Qian, Jie Sun, Xuefeng Lu
The mechanical properties of the hybrid materials and epoxy and carbon fiber (CF) composites were improved significantly as compared to the CF composites made from unmodified epoxy. The reasons could be attributed to the strong interfacial interaction between the CF and the epoxy composites for the existence of carbon nanomaterials. The microstructure and dispersion of carbon nanomaterials were characterized by transmission electron microscopy (TEM) and optical microscopy (OM). The results showed that the dispersion of the hybrid materials in the polymer was superior to other carbon nanomaterials...
May 12, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28330724/treatment-effects-and-mechanisms-of-yujin-powder-on-rat-model-of-large-intestine-dampness-heat-syndrome
#8
Wanling Yao, Chaoxue Yang, Yanqiao Wen, Wangdong Zhang, Xiaosong Zhang, Qi Ma, Peng Ji, Yongli Hua, Yanming Wei
ETHNOPHARMACOLOGICAL RELEVANCE: Yujin Powder (YJP), an old prescription, is one of the most classical prescription for treating the large intestine dampness-heat syndrome (LIDHS). However, its potential modern pharmacological mechanisms remain unclear. AIM OF THE STUDY: The present study was designed to explore the essence of LIDHS and treatment mechanisms of the YJP on the LIDHS. METHODS: The rat model of LIDHS was established by such complex factors as high-sugar and high-fat diet, improper diet, high temperature and humidity environment (HTHE), drinking and intraperitoneal injection of Escherichia coli...
March 19, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28328203/a-physical-molecular-mechanics-method-for-damped-dispersion
#9
Pragya Verma, Bo Wang, Laura E Fernandez, Donald G Truhlar
Damped dispersion can be a significant component of the interaction energy in many physical and chemical processes, for example, physisorption and noncovalent complexation. For physically interpreting and modeling such processes, it is convenient to have an analytic method to calculate damped dispersion that is readily applicable across the entire periodic table. Of the available methods to calculate damped dispersion energy for interacting systems with overlapping charge distributions, we select symmetry-adapted perturbation theory (SAPT) as providing a reasonable definition, and of the possible analytic forms, we choose the D3(BJ) method...
March 22, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28327501/accurate-determination-of-the-frequency-response-function-of-submerged-and-confined-structures-by-using-pzt-patches%C3%A2
#10
Alexandre Presas, David Valentin, Eduard Egusquiza, Carme Valero, Mònica Egusquiza, Matias Bossio
To accurately determine the dynamic response of a structure is of relevant interest in many engineering applications. Particularly, it is of paramount importance to determine the Frequency Response Function (FRF) for structures subjected to dynamic loads in order to avoid resonance and fatigue problems that can drastically reduce their useful life. One challenging case is the experimental determination of the FRF of submerged and confined structures, such as hydraulic turbines, which are greatly affected by dynamic problems as reported in many cases in the past...
March 22, 2017: Sensors
https://www.readbyqxmd.com/read/28325059/lysophospholipids-and-their-receptors-serve-as-conditional-damps-and-damp-receptors-in-tissue-oxidative-and-inflammatory-injury
#11
Ying Shao, Gayani Nanayakkara, Jiali Cheng, Ramon Cueto, William Y Yang, Joon-Young Park, Hong Wang, Xiaofeng Yang
SIGNIFICANCE: We proposed LPLs and LPL-GPCRs as conditional DAMPs and conditional DAMP receptors as a paradigm shift to the widely accepted classical DAMP and DAMP receptor model. Recent Advances: The aberrant levels of LPLs and GPCRs activate pro-inflammatory signal transduction pathways, trigger innate immune response and lead to tissue oxidative and inflammatory injury. CRITICAL ISSUES: Classical DAMPs model specify only the endogenous metabolites that are released from damaged/ dying cells as DAMPs but fails to identify elevated endogenous metabolites secreted from viable/ live cells during pathologies as DAMPs...
March 22, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28323124/cd44-is-a-key-player-in-non-alcoholic-steatohepatitis
#12
Stéphanie Patouraux, Déborah Rousseau, Stéphanie Bonnafous, Cynthia Lebeaupin, Carmelo Luci, Clémence M Canivet, Anne-Sophie Schneck, Adeline Bertola, Marie-Christine Saint-Paul, Antonio Iannelli, Jean Gugenheim, Rodolphe Anty, Albert Tran, Béatrice Bailly-Maitre, Philippe Gual
BACKGROUND: CD44 is expressed on many immune cells that contribute to inflammation. It has been shown, mainly through animal data, that CD44 regulates adipose tissue inflammation in obesity and hepatic leukocyte recruitment in a lithogenic context. However, its role in hepatic inflammation in a mouse model of steatohepatitis and its relevance in humans have not yet been investigated. METHODS: The role of CD44 was evaluated in CD44-/- mice and after injections of an αCD44 antibody in Wild-type mice challenged with a methionine- and choline-deficient diet (MCDD)...
March 16, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28322297/standardized-herbal-formula-pm014-inhibits-radiation-induced-pulmonary-inflammation-in-mice
#13
Jee-Youn Kim, Dasom Shin, Gihyun Lee, Jin-Mo Kim, Dongwook Kim, Yong-Min An, Byung Rok Yoo, Hanna Chang, Miran Kim, Jaeho Cho, Hyunsu Bae
Radiation therapy is widely used for thoracic cancers. However, it occasionally causes radiation-induced lung injuries, including pneumonitis and fibrosis. Chung-Sang-Bo-Ha-Tang (CSBHT) has been traditionally used to treat chronic pulmonary disease in Korea. PM014, a modified herbal formula derived from CSBHT, contains medicinal herbs of seven species. In our previous studies, PM014 exhibited anti-inflammatory effects in a chronic obstructive pulmonary disease model. In this study, we have evaluated the effects of PM014 on radiation-induced lung inflammation...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28320683/the-designated-convergence-rate-problems-of-consensus-or-flocking-of-double-integrator-agents-with-general-nonequal-velocity-and-position-couplings-further-results-and-patterns-of-convergence-rate-contours
#14
Wei Li
This paper considers the designated convergence rate (DCR) (or the designated convergence margin) problems of consensus or flocking of coupled double-integrator agents. The DCR problems are more valuable for systems design than just convergence or stability conditions. The system setting in this paper is general, i.e., the velocity coupling and position coupling (VCPC) between agents, respectively, are set to be general and nonequal (up to rescaling), together with distinct damping and stiffness gains for the VCPC, respectively...
March 14, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28319401/using-sound-to-study-the-effect-of-frothers-on-the-break-away-of-air-bubbles-at-an-underwater-capillary
#15
Pengbo Chu, Randolph Pax, Ronghao Li, Ray Langlois, James Andrew Finch
Frothers, a class of surfactants, are widely employed in froth flotation to aid the generation of small bubbles. Their action is commonly explained by their ability to hinder coalescence. There are occasional references suggesting that frother may also play a role in the initial break-up of the injected air mass. This work investigates the possible effect of frother on break-up by monitoring air bubbles produced quasi-statically at an underwater capillary. Under this condition, break-up is isolated from coalescence, and an impact of frothers on the detached bubble can be ascribed to an impact on break-up...
March 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28317376/all-dielectric-full-color-printing-with-tio2-metasurfaces
#16
Shang Sun, Zhenxing Zhou, Chen Zhang, Yisheng Gao, Zonghui Duan, Shumin Xiao, Qinghai Song
Recently, color generation in resonant nanostructures have been intensively studied. Despite of their exciting progresses, the structural colors are usually generated by the plasmonic resonances of metallic nanoparticles. Due to the inherent plasmon damping, such plasmonic nanostructures are usually hard to create very distinct color impressions. Here we utilize the concept of metasurfaces to produce all-dielectric, low-loss, and high resolution structural colors. We have fabricated TiO2 metasurfaces with electron-beam lithography and a very simple lift-off process...
March 19, 2017: ACS Nano
https://www.readbyqxmd.com/read/28315461/single-or-multi-frequency-generators-in-on-going-brain-activity-a-mechanistic-whole-brain-model-of-empirical-meg-data
#17
Gustavo Deco, Joana Cabral, Mark W Woolrich, Angus B A Stevner, Tim J van Hartevelt, Morten L Kringelbach
During rest, envelopes of band-limited on-going MEG signals co-vary across the brain in consistent patterns, which have been related to resting-state networks measured with fMRI. To investigate the genesis of such envelope correlations, we consider a whole-brain network model assuming two distinct fundamental scenarios: one where each brain area generates oscillations in a single frequency, and a novel one where each brain area can generate oscillations in multiple frequency bands. The models share, as a common generator of damped oscillations, the normal form of a supercritical Hopf bifurcation operating at the critical border between the steady state and the oscillatory regime...
March 14, 2017: NeuroImage
https://www.readbyqxmd.com/read/28303227/analysis-of-cordyceps-by-multi-column-liquid-chromatography
#18
Zhengming Qian, Shaoping Li
Cordyceps is a famous traditional Chinese medicine (TCM) that has been used in China for hundreds of years. In the present study a multi-column liquid chromatography (MC-LC) system was developed for the qualitative analysis of macromolecules and micromolecules in Cordyceps. The MC-LC system includes a size exclusion pre-column, a size exclusion column (SEC) and a reversed phase column (RP) which were controlled by column-switching valves. The sample was separated by the size exclusion pre-column into two fractions (macromolecules and micromolecules)...
March 2017: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/28301393/potential-contribution-of-mitochondrial-mt-dna-damage-associated-molecular-patterns-damps-in-transfusion-products-to-the-development-of-acute-respiratory-distress-syndrome-ards-after-multiple-transfusions
#19
Jon D Simmons, Yann-Leei L Lee, Viktor M Pastukh, Gina Capley, Cherry A Muscat, David C Muscat, Michael L Marshall, Sidney B Brevard, Mark N Gillespie
INTRODUCTION: Massive transfusions are accompanied by an increased incidence of a particularly aggressive and lethal form of acute lung injury (delayed TRALI) which occurs >24 hours after transfusions. In light of recent reports showing that mtDNA DAMPs are potent pro-inflammatory mediators, and that their abundance in the sera of severely injured or septic patients is predictive of clinical outcomes, we explored the idea that mtDNA DAMPs are present in transfusion products and are associated with the occurrence of delayed TRALI...
March 15, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28301133/chemical-interface-damping-depends-on-electrons-reaching-the-surface
#20
Benjamin Foerster, Anneli Joplin, Katharina Kaefer, Sirin Celiksoy, Stephan Link, Carsten Sönnichsen
Metallic nanoparticles show extraordinary strong light absorption near their plasmon resonance, orders of magnitude larger compared to nonmetallic nanoparticles. This "antenna" effect has recently been exploited to transfer electrons into empty states of an attached material, for example to create electric currents in photovoltaic devices or to induce chemical reactions. It is generally assumed that plasmons decay into hot electrons, which then transfer to the attached material. Ultrafast electron-electron scattering reduces the lifetime of hot electrons drastically in metals and therefore strongly limits the efficiency of plasmon induced hot electron transfer...
March 17, 2017: ACS Nano
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