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Functional Hops

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https://www.readbyqxmd.com/read/28208473/non-hermitian-surface-hopping
#1
Xing Gao, Walter Thiel
We present a generalized non-Hermitian equation of motion (nH-EOM) to go beyond standard trajectory surface hopping dynamics. The derivation is based on the Born-Huang expansion of the total wave function and the polar representation of the nuclear factor. The nH-EOM contains two additional terms, a skew symmetry term iΓ with dissipation operator Γ to account for decoherence, and a kinetic-energy renormalization term to account for phase shifts, without destroying the invariance to the choice of representation...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28207241/zero-thermal-expansion-and-semiconducting-properties-in-pbtio3-bi-co-ti-o3-ferroelectric-solid-solutions
#2
Zhao Pan, Jun Chen, Xingxing Jiang, Zheshuai Lin, Linxing Zhang, Longlong Fan, Yangchun Rong, Lei Hu, Hui Liu, Yang Ren, Xiaojun Kuang, Xianran Xing
Zero thermal expansion (ZTE) behavior is rare but important for both fundamental studies and practical applications of functional materials. Until now, most available ZTE materials are either electrical insulating oxides or conductive metallic compounds. Very few ZTE materials exhibit the semiconductor feature. Here we report a ZTE in a semiconducting ferroelectric of 0.6PbTiO3-0.4Bi(Co0.55Ti0.45)O3-δ. Its unit cell volume exhibits a negligible change over a broad temperature range from room temperature to 500 °C...
February 16, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28204944/photodissociation-of-fono-an-excited-state-nonadiabatic-dynamics-study
#3
Allaa R Hilal, Rifaat Hilal
The photo dissociation of nitrosyl fluorite, FONO, a potential source of atmospheric fluorine, underlies its active role in ozone depletion and other activities in the troposphere. In the present work, the electronic structure of FONO is revisited at high level of ab initio and density functional theory (DFT) theoretical levels. Several different post SCF methods were used to compute excited states, vertical excitation energies and intensities, namely configuration interaction with single excitations (CIS), equation of motion coupled cluster with single and double excitations (EOM-CCSD), and symmetry adopted cluster configuration interaction (SAC-CI) methods...
March 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28198089/a-comprehensive-proteome-map-of-glandular-trichomes-of-hop-humulus-lupulus-l-female-cones-identification-of-biosynthetic-pathways-of-the-major-terpenoid-related-compounds-and-possible-transport-proteins
#4
Antoine Champagne, Marc Boutry
Female flowers of hop (Humulus lupulus) are an essential source of terpenoid-related compounds, which are mainly used as flavoring in the beer brewing process. The compounds involved are bitter acids, terpenophenolics, as well as mono- and sesquiterpenoids. In this work, we analyzed the proteome of purified glandular trichomes (lupulin glands) from female flowers, which produce and accumulate these compounds. An extensive 2D-LC-MS/MS analysis identified 1,015 proteins. Of these, most correspond to housekeeping and primary metabolism-related proteins, albeit predominantly including amino acid and lipid metabolism, which feeds the specialized (secondary) metabolism...
February 15, 2017: Proteomics
https://www.readbyqxmd.com/read/28195670/a-bunch-like-tertiary-amine-grafted-polysulfone-membrane-for-vrfbs-with-simultaneously-high-proton-conductivity-and-low-vanadium-ion-permeability
#5
Qinglong Tan, Shanfu Lu, Jiangju Si, Haining Wang, Chunxiao Wu, Xianfeng Li, Yan Xiang
Novel polysulfone membranes with bunch-like tertiary amine groups are synthesized with high ion selectivity and outstanding chemical stability for vanadium redox flow batteries (VRFBs). The bunch-like tertiary amine groups simultaneously act as an ionic conductor for proton hopping and vanadium ion transport obstacles. The performance of the membrane is tuned via controlling the grafting degree of the chloromethylated polysulfone. The results show that membranes show increasing proton over vanadium ion (σ/p) selectivity with increasing functional tertiary groups...
February 13, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/28193840/co-chaperone-hsp70-hsp90-organizing-protein-hop-is-required-for-transposon-silencing-and-pirna-biogenesis
#6
Joseph A Karam, Rasesh Y Parikh, Dhananjaya Nayak, David Rosenkranz, Vamsi K Gangaraju
piRNAs are 26-30nt germ-line specific small non-coding RNAs that have evolutionarily conserved function in mobile genetic element (transposons) silencing and maintenance of genome integrity. Drosophila Hsp70/90 Organizing Protein Homolog (Hop), a co-chaperone, interacts with piRNA binding protein Piwi and mediates silencing of phenotypic variations. However, it is not known if Hop has a direct role in piRNA biogenesis and transposon silencing. Here, we show that knockdown of Hop in the germ-line nurse cells (GLKD) of Drosophila ovaries leads to activation of transposons...
February 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28193435/effect-of-harvest-time-on-some-in-vitro-functional-properties-of-hop-polyphenols
#7
Takako Inui, Koharu Okumura, Hiroo Matsui, Takahiro Hosoya, Shigenori Kumazawa
Health benefits of hop polyphenols are well studied. In the present investigation, we examined the antioxidant activity, anti-nitric oxide (NO) production, and anti-adipocyte differentiation of polyphenols extracted from hops (HPP), harvested at different times for over 4years. Saaz hop variety from the Czech Republic was used in the in vitro assays. Twenty-three polyphenols were quantitatively analyzed using Orbitrap liquid chromatography-mass spectrometry (LC-MS), and their health promoting effects were assayed individually...
June 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28188927/xanthohumol-isolated-from-humulus-lupulus-prevents-thrombosis-without-increased-bleeding-risk-by-inhibiting-platelet-activation-and-mtdna-release
#8
Guang Xin, Zeliang Wei, Chengjie Ji, Huajie Zheng, Jun Gu, Limei Ma, Wenfang Huang, Susan L Morris-Natschke, Jwu-Lai Yeh, Rui Zhang, Chaoyi Qin, Li Wen, Zhihua Xing, Yu Cao, Qing Xia, Ke Li, Hai Niu, Kuo-Hsiung Lee, Wen Huang
AIM: As the global population has reached 7 billion and the baby boom generation reaches old age, thrombosis has become the major contributor to the global disease burden. It has been reported that, in moderate doses, beer may protect against thrombosis. Xanthohumol (XN), an antioxidant, is found at high concentrations in hop cones (Humulus lupulus L.) and is a common ingredient of beer. Here, the aim of the present work was to investigate the effects of XN on antithrombotic and antiplatelet activities, and study its mechanism...
February 7, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28186834/elevated-knee-joint-kinetics-and-reduced-ankle-kinetics-are-present-during-jogging-and-hopping-after-achilles-tendon-ruptures
#9
Richard W Willy, Annelie Brorsson, Hayley C Powell, John D Willson, Roy Tranberg, Karin Grävare Silbernagel
BACKGROUND: Deficits in plantarflexor function are common after an Achilles tendon rupture. These deficits may result in an altered distribution of joint loads during lower extremity tasks. HYPOTHESIS: We hypothesized that, regardless of treatment, the Achilles tendon-ruptured limb would exhibit deficits in ankle kinematics and joint power while exhibiting elevated knee joint power and patellofemoral joint loads during walking, jogging, and hopping. We further hypothesized that this loading pattern would be most evident during jogging and hopping...
February 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28182531/relationships-of-functional-tests-following-acl-reconstruction-exploratory-factor-analyses-of-the-lower-extremity-assessment-protocol
#10
Melissa DiFabio, Lindsay V Slater, Grant Norte, John Goetschius, Joseph M Hart, Jay Hertel
CONTEXT: After ACL reconstruction (ACLR), deficits are often assessed using a variety of functional tests, which can be time consuming. It is unknown whether these tests provide redundant or unique information. OBJECTIVE: To explore relationships between components of a battery of functional tests, the Lower Extremity Assessment Protocol (LEAP), to aid in developing the most informative, concise battery of tests for evaluating ACLR patients. DESIGN: Descriptive, cross-sectional...
February 9, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28178798/geminate-electron-hole-recombination-in-organic-photovoltaic-cells-a-semi-empirical-theory
#11
Mariusz Wojcik, Artur Nowak, Kazuhiko Seki
We propose a semi-empirical theory which describes the geminate electron-hole separation probability in both homogeneous systems and donor-acceptor heterojunction systems applicable in organic photovoltaics. The theory is based on the results of extensive simulation calculations, which were carried out using various lattice models of the medium and different charge-carrier hopping mechanisms, over the parameter ranges typical for organic solar cells. It is found that the electron-hole separation probability can be conveniently described in terms of measurable parameters by a formula whose functional form is derived from the existing recombination theories, and which contains only one empirical parameter...
February 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28176992/measuring-the-surface-diffusivity-of-argon-in-nanoporous-carbon
#12
Xi Mi, Yunfeng Shi
Gas diffusion in porous media consists of surface hopping and non-surface ballistic/bulk diffusion. Unfortunately, only the overall diffusivity is usually measured, without being separated into various diffusion modes. Here, we report a numerical method to differentiate contributions from surface diffusion and non-surface diffusion for argon diffusion in nanoporous carbon using molecular dynamics simulations. The key is to truncate the argon trajectories based on the adsorption/desorption state, and thus attribute mass fluxes according to specific mechanisms during diffusion...
February 8, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28176927/association-between-sensory-function-and-hop-performance-and-self-reported-outcomes-in-patients-with-anterior-cruciate-ligament-injury
#13
Anna Cronström, Ewa M Roos, Eva Ageberg
BACKGROUND: In patients with anterior cruciate ligament (ACL) deficiency (ACLD) or reconstruction (ACLR), sensory deficits are commonly assessed as knee kinesthesia using time-consuming laboratory equipment. Portable equipment such as that used for evaluation of vibration sense would be preferable. In contrast to kinesthesia, vibration sense is not well studied in these patients. OBJECTIVES: 1) To study the association between kinesthesia and vibration sense to investigate if one sensory measurement can replace the other; and 2) to determine the clinical relevance by investigating associations between the sensory measurements and functional performance and patient-reported outcomes in patients with ACLD or ACLR...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/28155228/athop3-a-member-of-the-hop-family-in-arabidopsis-interacts-with-bip-and-plays-a-major-role-in-the-er-stress-response
#14
Nuria Fernández-Bautista, Lourdes Fernández-Calvino, Alfonso Muñoz, M Mar Castellano
HOP is a well-studied family of cytosolic cochaperones. However, the possible role of HOP during the ER stress response and their interactors within the ER were not previously addressed in any eukaryote. We have demonstrated that Arabidopsis HOP3, whose function was not studied before, interacts in vivo with cytosolic HSP90 and HSP70, and, unexpectedly, with BiP, a HSP70 ER-resident protein. Although BiP lacks the domain described in other eukaryotes for HOP-HSP70 binding, it interacts with HOP3 through a noncanonical association to its nucleotide binding domain...
February 2, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28152673/effects-of-adding-a-weekly-eccentric-overload-training-session-on-strength-and-athletic-performance-in-team-handball-players
#15
Rafael Sabido, Jose Luis HernáNdez-Davó, Javier Botella, Angel Navarro, Julio Tous-Fajardo
To investigate the influence of adding a weekly eccentric-overload training (EOT) session in several athletic performance's tests, 18 team-handball players were assigned either to an EOT (n = 11) or a Control (n = 7) group. Both groups continued to perform the same habitual strength training, but the EOT group added one session/week during a 7-week training programme consisting of four sets of eight repetitions for the bilateral half-squat and unilateral lunge exercises. The test battery included handball throwing velocity, maximum dynamic strength (1RM), countermovement jump (CMJ), 20 m sprint, triple hop for distance, and eccentric/concentric power in both the half-squat and lunge exercises...
February 2, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28146394/functional-performance-among-active-female-soccer-players-after-unilateral-primary-anterior-cruciate-ligament-reconstruction-compared-with-knee-healthy-controls
#16
Anne Fältström, Martin Hägglund, Joanna Kvist
BACKGROUND: Good functional performance with limb symmetry is believed to be important to minimize the risk of injury after a return to pivoting and contact sports after anterior cruciate ligament reconstruction (ACLR). PURPOSE: This study aimed to investigate any side-to-side limb differences in functional performance and movement asymmetries in female soccer players with a primary unilateral anterior cruciate ligament (ACL)-reconstructed knee and to compare these players with knee-healthy controls from the same soccer teams...
February 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28143819/performing-international-outreach-phun-week-in-an-australian-primary-school
#17
Patricia A Halpin
Physiology Understanding (PhUn) Week is an annual science outreach program sponsored by the American Physiological Society in which K-12 students learn about physiology through meeting a physiologist and performing an experiment. Performing PhUn Week at an Australian private primary school during a family vacation in 2014 enabled me to receive a fellowship to return the following year for further implementation. To set up the outreach, I contacted the assistant principal of a public primary school, and she connected me with the physical education (PE) teacher...
March 1, 2017: Advances in Physiology Education
https://www.readbyqxmd.com/read/28137643/mlf1-is-a-proapoptotic-antagonist-of-hop-complex-mediated-survival
#18
Yi Sun, Jyh-Rong Chao, Wu Xu, Alan Pourpak, Kelli Boyd, Simon Moshiach, Guo-Yan Qi, Amina Fu, Hua-Rong Shao, Stanley Pounds, Stephan W Morris
In the HAX1/HtrA2-OMI/PARL (HOP) mitochondrial protein complex, anti-apoptotic signals are generated by cleavage and activation of the serine protease HtrA2/OMI by the rhomboid protease PARL upon recruitment of both proteases to inner mitochondrial membrane protein HAX1 (HS1-associated protein X-1). Here we report the negative regulation of the HOP complex by human leukemia-associated myeloid leukemia factor 1 (MLF1). We demonstrate that MLF1 physically and functionally associates with HAX1 and HtrA2. Increased interaction of MLF1 with HAX1 and HtrA2 displaces HtrA2 from the HOP complex and inhibits HtrA2 cleavage and activation, resulting in the apoptotic cell death...
January 27, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28132506/natural-prenylchalconaringenins-and-prenylnaringenins-as-antidiabetic-agents-%C3%AE-glucosidase-and-%C3%AE-amylase-inhibition-and-in-vivo-anti-hyperglycemic-and-anti-hyperlipidemic-effects
#19
Hua Sun, Dong Wang, Xiaotong Song, Yazhou Zhang, Weina Ding, Xiaolin Peng, Xiaoting Zhang, Yashan Li, Ying Ma, Run-Ling Wang, Peng Yu
Inhibition of α-glucosidase and α-amylase decreases postprandial blood glucose levels and delays glucose absorption, making it a treatment strategy for type 2 diabetes. This study examined in vivo and in vitro anti-diabetic activities of natural prenylchalconaringenins 1-2 and prenylnaringenins 3-4, found in hops and beer. 3'-Geranylchalconaringenin (2) competitively and irreversibly inhibited α-glucosidase (IC50 = 1.08 μM) with activity 50-fold higher than acarbose (IC50 = 51.30 μM) and showed moderate inhibitory activity against α-amylase (IC50 = 20...
January 29, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28131837/acute-improvement-of-endothelial-functions-after-oral-ingestion-of-isohumulones-bitter-components-of-beer
#20
Junko Tomita, Seiichi Mochizuki, Sohachi Fujimoto, Naoki Kashihara, Takashi Akasaka, Mitsune Tanimoto, Kiyoshi Yoshida
Isohumulones, principal components of the bitter taste of beers, have antioxidant capacity. We studied i) the effects of oral ingestion of isomerized hop extract (IHE) on the endothelial functions in smokers as well as non-smokers and ii) the effects of IHE on cultured endothelial cells in high oxidative stress state. Twelve cigarette smokers and eleven non-smokers ingested IHE and placebo in a randomized crossover design. Flow-mediated vasodilatation (FMD) was measured using ultrasonography. We also studied the effects of isohumulones on i) the cell viability under hypoxia and ii) the levels of angiotensin II (AT-II)-induced reactive oxygen species (ROS) in the cultured human aortic endothelial cells (HAECs)...
January 26, 2017: Biochemical and Biophysical Research Communications
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