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Understanding super-enhancers

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Science China(Life Sciences) 2016年第3期59卷 277-280页

作者： Hao Cheng Xiaoyang Dou jing-Dong j.Han Key Laboratory of Computational Biology CAS Center for Excellence in Molecular Cell Science Collaborative Innovation Center for Genetics and Developmental Biology Chinese Academy of Sciences-Max Planck Partner Institute for Computational Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences

Super-enhancers are defined as cluster of enhancers with dense TF binding, which can activate proximal cell-identity gene expression. Here we review the identification, func- tional significance of super-enhancers, and their relation- ships with cancer. With the current intense interests in su- per-enhancers, more super-enhancers will be defined and studied in different cell types and tissues and in different developmental and biological contexts to reveal molecular mechanisms of their functions.

关键词：超促进剂基因表达分子机制生物环境定义细胞激活

Luminescence properties of dysprosium doped YVO_4 phosphor

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journal of Rare Earths 2018年第12期36卷 1245-1249页

作者： H.j.Rajendra C.PANDurangappa D.L.Monika Department of Physics RNS Institute of TechnologyChannasandra Department of Physics SJB Institute of Technology

Trivalent dysprosium(Dy) activated nanocrystalline yttrium vanadate(YVO) phosphor was synthesized via co-precipitation method. The prepared samples were characterized by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR), scanning electron microscopy(SEM), optical absorption and photo luminescence(PL) techniques. The XRD patterns reveal the tetragonal crystalline phase. SEM images reveal that Dy doped YVOnanocrystals are agglomerated. EDAX confirms the formation of YVO:Dy. FTIR spectrum shows two strong absorption bands at 459 and 761 cm. Optical absorption spectrum showed the surface defects in the as-prepared samples. The PL emission spectrum shows two characteristic emission bands at 485 and 575 nm. The strong yellow emission peak at 575 nm is assigned to ~4 F→~6 Hhyper sensitive transition of Dyions, Study of CIE chromaticity diagram indicates the suitability of the phosphor for the development of yellow-green LEDs.

关键词： Precipitation Yttrium vanadate Dysprosium X-ray diffraction Photoluminescence Rare earths

The comparison of auditory behavioral and evoked potential responses (steadystate and cortical) in subjects with occupational noise-induced hearing loss

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journal of Otology 2021年第4期16卷 242-251页

作者： P.H.Dejonckere j.Lebacq Federal Agency for Occupational Risks Avenue de l’Astronomie1B-1210BruxellesBrusselsBelgium Institute of Neurosciences University of LouvainPasteurAvenue Mounier53B-1200BruxellesBrusselsBelgium

Objective: To define difference scores between PTA, ASSR and CERA thresholds in subjects with occupational ***: 44 subjects undergoing a medico-legal expert assessment for occupational NIHL and fulfillingcriteria of reliability were considered. Assessment included: PTA, 40 Hz binaural multiple ASSR and CERA(1-2-3 kHz).Results: The respective average difference scores (ASSR - PTA) for 1, 2 and 3 kHz are 13.01 (SD 10.19) dB,12.72 (SD 8.81) dB and 10.38 (SD 8.19) dB. The average (CERA - ASSR) difference scores are 1.25 (SD 14.63)dB for 1 kHz (NS), 2.73 (SD 13.03) dB for 2 kHz (NS) and 4.51 (SD 12.18) dB for 3 kHz. The correlationbetween PTA and ASSR (0.82) is significantly stronger than that between PTA and CERA (0.71). In a givensubject, PTA thresholds are nearly always lower (i.e., better) than ASSR thresholds, whatever the frequency (1-2-3 kHz) and the side (right e left). A significant negative correlation is found between thedifference score (ASSR e PTA) and the degree of hearing ***: ASSR outperforms CERA in a medicolegal context, although overestimating the behavioralthresholds by 10e13 dB.

关键词： CERA ASSR NIHL Hearing thresholds Occupational

Professor Ko Shimamoto (1949–2013)

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journal of Integrative Plant Biology 2013年第11期55卷 1179-1180页

作者： Letian Chen Yao-Guang Liu William j.Lucas State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources College of Life Sciences South China Agricultural University Department of Plant Biology University of California

Sadly, Prof. Ko Shimamoto died on September 28, 2013, aged 63. He was born in Wakayama, japan, on October 19, 1949, received his bachelor＇s degree in Agriculture from Kyoto University in 1974 and his PhD in Genetics from the University of Wisconsin- Madison in 1980. After his postdoctoral training at the Friedrich Miescher Institute in Basel, Switzerland,

关键词： Cell Professor Ko Shimamoto

Significance of Experimental Data in the Design of Structures Made from 1.4057 Steel

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journal of Wuhan University of Technology(Materials Science) 2014年第1期29卷 131-136页

作者： Brnic j Turkalj G NIU jitai Canadija M Lanc D Department of Engineering Mechanics Faculty of Engineering University of Rijeka School of Materials Science and Engineering Harbin Institute of Technology School of Materials Science and Engineering Henan Polytechnic University

This paper presents experimentally-obtained data which can be of importance in the design procedure of engineering components made of 1.4057 （X 17CrNil 6-2; AISI 431） steel. In this manner, uniaxialy tests related to determine material mechanical properties and short-time creep behavior were performed. Based on the mentioned tests, ultimate tensile strength, 0.2 offset yield strength and modulus of elasticity at low and elevated temperatures were determined. Also, creep behavior of considered steel was tested for selected temperatures and selected stress levels. According to experimentally determined Charpy impact energy an assessment of fracture toughness was made.

关键词： material properties short-time creep fracture toughness calculation 1.4057 steel

Experimental and Numerical Investigation of the Flow in Rotating Diverging Channels

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journal of Thermal Science 2010年第2期19卷 115-119页

作者： R.A.Van den Braembussche j.Prinsier A.Di Sante von Karman Institute for Fluid Dynamics Turbomachinery and Propulsion Department Waterloose steenweg presently at ALSTOM POWER Steam Turbines R&D Brown Boveri Strasse 7

This paper reports on an experimental and numerical study at low Reynolds number in order to evaluate the influence of the Coriolis forces on the flow in radial rotating channels. Operating conditions correspond to the flow in radial impellers for micro gasturbine applications. A comparison of detailed flow measurements with CFD resuits indicates that Navier Stokes solvers with standard k-ω and SST turbulence models predict the flow surprisingly well and that no extra corrections for Coriolis forces are required at these operating conditions

关键词： Coriolis forces turbulence models rotating channels boundary layers

K-P-Burgers equation in negative ion-rich relativistic dusty plasma including the effect of kinematic viscosity

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Chinese Physics B 2016年第10期25卷 215-221页

作者： A N Dev M K Deka j Sarma D Saikia N C Adhikary Department of Mathematics Siksha ‘O' Anusandhan University Department of Applied Sciences Institute of Science and Technology Gauhati University Department of Mathematics R G Baruah College Physical Sciences Division Institute of Advanced Study in Science and TechnologyVigyan Path Paschim Boragaon

The stationary solution is obtained for the K–P–Burgers equation that describes the nonlinear propagations of dust ion acoustic waves in a multi-component, collisionless, un-magnetized relativistic dusty plasma consisting of electrons, positive and negative ions in the presence of charged massive dust grains. Here, the Kadomtsev–Petviashvili(K–P) equation, threedimensional(3D) Burgers equation, and K–P–Burgers equations are derived by using the reductive perturbation method including the effects of viscosity of plasma fluid, thermal energy, ion density, and ion temperature on the structure of a dust ion acoustic shock wave(DIASW). The K–P equation predictes the existences of stationary small amplitude solitary wave,whereas the K–P–Burgers equation in the weakly relativistic regime describes the evolution of shock-like structures in such a multi-ion dusty plasma.

关键词： K–P–Burgers equation negative ion relativistic plasma reductive perturbation method

Variable retention harvesting: conceptual analysis according to different environmental ethics and forest valuation

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Ecological Processes 2019年第1期8卷 485-491页

作者： Leonardo Galetto Carolina Torres Guillermo j.Martínez Pastur Departamento de Diversidad Biológica y Ecología FCEFyNUniversidad Nacional de Córdoba(UNC)Vélez Sarsfield 16115000 CórdobaArgentina Instituto Multidisciplinario de Biología Vegetal(IMBIV) Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)Vélez Sarsfield 16115000 CórdobaArgentina Centro Austral de Investigaciones Científicas(CADIC) Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)Houssay 2009410 UshuaiaTierra del FuegoArgentina.

Background:Conceptual clarity is important to attain precise communication of scientific knowledge and to implement appropriate technological and policy *** concepts referring to forest management are widely used by decision-makers,regardless of their *** the scientific and methodological issues of forestry practices are frequently discussed in the literature,their normative dimensions are rarely ***,linguistic uncertainty increases when different environmentally ethical perspectives and ways of valuing forests are *** objective was to compare different conceptualizations on the silvicultural systems suggested for forest management and the implications they have for *** have conceptually contrasted highintensity forestry practices with variable retention harvesting,considering different environmentally ethical perspectives and forest valuation ***:Clear boundaries between clear-cutting,selective logging,and variable retention harvesting can be evidenced when different ethical points of view and alternatives in the human-nature relationships are *** have found a variety of definitions of variable retention harvesting that can be analyzed under different ethical *** contrasting views on variable retention harvesting can be evidenced if nature is considered to be purely at human’s service or if it is conceptualized as humans co-inhabiting with *** latter position implies that the maintenance of ecological,evolutionary,and historical processes supported by unmanaged forest stands is a crucial step for forest management proposals based on variable retention ***:Forestry practices that are focused on forest yields and that misinterpret functional uncertainty of forest functioning would be ***,forestry with variable retention harvesting could imply good yields with reasonable conservation management in some contexts,while it could be unacce

关键词： Environmental ethical perspectives Consequentialism Deontological ethics Virtue ethics Policy options for forest and biocultural conservation

Estimation of boundary-layer flow of a nanofluid past a stretching sheet: A revised model

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journal of Hydrodynamics 2016年第4期28卷 596-602页

作者： Naeema ISHFAQ Zafar Hayat KHAN Waqar Ahmad KHAN Richard j.CULHAM School of Mathematical Sciences Peking University Department of Mathematics University of MalakandDir (Lower) Department of Mechanical and Industrial Engineering College of EngineeringMajmaah University Department of Mechanical Engineering University of Waterloo

The previous model for the boundary layer nanofluid flow past a stretching surface with a specified nanoparticle volume fraction on the surface is *** major limitation of the previous model is the active control of the nanoparticle volume fraction on the *** a revised model proposed in this paper,the nanoparticle volume fraction on the surface is passively controlled,which accounts for the effects of both the Brownian motion and the thermophoresis under the boundary condition,whereas the Buongiorno＇s model considers both effects in the governing *** assumption of zero nanoparticle flux on the surface makes the model physically more *** the revised model,the dimensionless heat transfer rates are found to be higher whereas the dimensionless mass transfer rates are identically zero due to the passive boundary *** is also found that the Brownian motion parameter has a negligible effect on the Nusselt number.

关键词： stretching Brownian dimensionless revised identically governing realistic physically electrically negligible