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Genes & Diseases 2023年第3期10卷 739-742页

作者： Renhua Song Justin J-l Wong Epigenetics and RNA Biology Program Centenary Institute The University of SydneyCamperdown 2050Australia Faculty of medicine and Health The University of SydneyCamperdown 2050Australia

Of over 170 types of RNA modifications discovered,N^(6)-methyladenosine(m^(6)A)is the most actively studied.m6A confers oncogenic potential,maintains cancer stem cells,and is associated with cancer-related outcomes.^(... 详细信息

关键词： cancer maintain immune

A robust composite wide area control of a DFIG wind energy system for damping inter-area oscillations

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Protection and Control of modern Power Systems 2020年第1期5卷 280-289页

作者： Ayyarao S.l.V.Tummala Department of EEE GMR Institute of TechnologyRajam 532127India

This paper presents a novel composite wide area control of a DFIG wind energy system which combines the Robust Exact Differentiator(RED)and Discontinuous Integral(DI)control to damp out inter-area *** generates the real-time differentiation of a relative speed signal in a noisy environment while DI control,an extension to a twisting algorithm and PID control,develops a continuous control signal and hence reduces *** proposed control is robust to disturbances and can enhance the overall stability of the *** proposed composite sliding mode control is evaluated using a modified benchmark two-area power system model with wind energy *** results under various operating scenarios show the efficacy of the proposed approach.

关键词： DFIG Wide area control Wind energy system Sliding mode control

male mate choice as differential investment in contest competition is affected by female ornament expression

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Current Zoology 2018年第3期64卷 335-344页

作者： Stacey l. WEISS matthew DUBIN Department of Biology University of Puget Sound 1500 N. Warner Street No. 1088 Tacoma WA 98418-1088 USA

High male mating effort and high variation in female quality select for male mate choice, which may be expressed as differential investment of reproductive effort based on female value. male reproductive effort includes investment in direct contest competition with rival males for access to females, yet variation in male-male contest behavior is rarely examined in the context of male mate choice. We examine such male response to variation in female body size, reproductive state, and female-specific ornamentation in the striped plateau lizard, Sceloporus virgatus. We housed lizards in trios of 2 size-matched males and one female for 5 days, such that all 3 lizards were physi- cally isolated and the males could see the female but not each other. We then placed males simultaneously into the female＇s cage and scored the interaction. male-male aggression was not significantly affected by female body size, reproductive state, nor ornament color, but was influenced by ornament size which reliably signals the phenotypic quality of the female and her off- spring. In the presence of larger-ornamented females, males engaged in more male-male aggressive display behavior more quickly, and performed fewer high-intensity contact behaviors but were equally likely to escalate to this riskier level of fighting. Our data suggest that males adjust their energetic investment during intrasexual competitive interactions in response to variation in the contested female which, assuming males gain direct or indirect benefits from their strategic allocation of reproductive effort, fits the modern understanding of male mate choice.

关键词： aggression female-specific ornaments intrasexual competition lizards resource quality sexual selection

A guide to diagnosis of iron deficiency and iron deficiency anemia in digestive diseases

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World Journal of Gastroenterology 2009年第37期15卷 4638-4643页

作者： Fernando Bermejo Santiago García-lópez Digestive Service University Hospital of Fuenlabrada Fuenlabrada Madrid 28942 Spain Digestive Service University Hospital Miguel Servet Zaragoza 50009 Spain

Iron deficiency （ID）, with or without anemia, is often caused by digestive diseases and should always be investigated, except in very specific situations, as its causes could be serious diseases, such as cancer. Diagnosis of ID is not always easy. low serum levels of ferritin or transferrin saturation, imply a situation of absolute or functional ID. It is sometimes difficult to differentiate ID anemia from anemia of chronic diseases, which can coexist. In this case, other parameters, such as soluble transferrin receptor activity can be very useful. After an initial evaluation by clinical history, urine analysis, and serological tests for celiac disease, gastroscopy and colonoscopy are the key diagnostic tools for investigating the origin of ID, and will detect the most important and prevalent diseases. If both tests are normal and anemia is not severe, treatment with oral iron can be indicated, along with stopping any treatment with non-steroidal anti-inflammatory drugs. In the absence of response to oral iron, or if the anemia is severe or clinical suspicion of important disease persists, we must insist on diagnostic evaluation. Repeat endoscopic studies should be considered in many cases and if both still show normal results, investigating the small bowel must be considered. The main techniques in this case are capsule endoscopy, followed by

关键词： Anemia Iron-deficiency Iron deficiency anemia

lHCb gets closer to discovering the second doubly charmed baryon

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Science China(Physics,mechanics & Astronomy) 2020年第2期63卷 25-26页

作者： marek Karliner Jonathan l.Rosner School of Physics and Astronomy Tel Aviv UniversityTel Aviv 69978Israel Enrico Fermi Institute and Department of Physics University of ChicagoChicagoIL 60637USA

Recently the lHCb Collaboration [1] published the results of a search for the doubly charmed baryon ■. No significant signal is seen in the mass range from 3.4 to3.8 Ge V. To put this result in context, the ■baryon was seen by lHCb in decay modes ΛcK-π^+π^+[2](2017) and ■^+cπ^+[3](2018). The weighted average of the ■^++cc mass is 3621.24±0.65 (stat.)±0.31 (syst.) meV [3].

关键词： doubly closer lHCb

Aircraft measurements of Cloud–Aerosol Interaction over East Inner mongolia

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Advances in Atmospheric Sciences 2017年第8期34卷 983-992页

作者： Yuhuan lü Hengchi lEI Jiefan YANG Wuqing meteorological Observatory ofTianjin Tianjin 301700 China Key laboratory of Cloud-Precipitation Physics and Severe Storm Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Collaborative Innovation Center on Forecast and Evaluation of meteorological Disasters Nanjing University of Information Science and Technology Nanjing 210044 China

To investigate the potential effects of aerosols on the microphysical properties of warm clouds, airborne observational data collected from 2009 to 2011 in Tongliao, Inner mongolia, China, were statistically analyzed in this study. The results demonstrated that the vertical distribution of the aerosol number concentration（N_a） was similar to that of the clean rural continent. The average aerosol effective diameter（D_e） was maintained at approximately 0.4 μm at all levels. The data obtained during cloud penetrations showed that there was a progressive increase in the cloud droplet concentration（N_c） and liquid water content（lWC） from outside to inside the clouds, while the Nawas negatively related to the Ncand lWC at the same height. The fluctuation of the N_a, Ncand lWC during cloud penetration was more obvious under polluted conditions（Type 1） than under clean conditions（Type 2）. moreover, the wet scavenging of cloud droplets had a significant impact on the accumulation mode of aerosols, especially on particles with diameters less than 0.4 μm. The minimum wet scavenging coefficient within the cloud was close to 0.02 under Type 1 conditions, while it increased to 0.1 under Type 2 conditions,which proved that the cloud wet scavenging effect under Type 1 conditions was stronger than that under Type 2 ***, cloud droplet spectra under Type 1 conditions were narrower, and their horizontal distributions were more homogeneous than those under Type 2 conditions.

关键词： aircraft observation aerosol warm cloud microphysical properties

Ca2+ signaling during vertebrate somitogenesis

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Acta Pharmacologica Sinica 2006年第7期27卷 781-790页

作者： Sarah E WEBB Andrew l mIllER Department of Biology the Hong Kong University of Science and TechnologyClear Water BayHong Kong SARChina

A variety of Ca2+signals,in the form of intercellular pulses and waves,have beenreported to be associated with the various sequential stages of somitogenesis:from convergent extension and the formation of the paraxial mesoderm;during thepatterning of the paraxial mesoderm to establish segmental units;throughout theformation of the morphological boundaries that delineate the segmental units,andfinally from within the maturing somites as they undergo subsequent develop-ment and *** to both the technical challenges presented in imag-ing intact,developing embryos,and the subtle nature of the Ca2+transientsgenerated,they have proved to be difficult to ***,a combinationof cultured cell preparations and improvements in explant and whole embryo im-aging techniques has begun to reveal a new and exciting class of developmentalCa2+*** this chapter,we review the small,but expanding,number ofreports in the literature and attempt to identify common characteristics of thesomitogenic Ca2+transients,such as their mode of generation,as well as theirspatial and temporal *** may help to elucidate the significance andfunction of these intriguing Ca2+transients and thus integrate them into the com-plex signaling networks that orchestrate early developmental events.

关键词： Ca2+ signaling somitogenesis zebrafish Xenopus mouse chick

A review of the sentinel prey method as a way of quantifying invertebrate predation under field conditions

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Insect Science 2017年第4期24卷 528-542页

作者： Gabor l. lovei marco Ferrante Department of Agroecology Flakkebjerg Research Centre Aarhus University Forsgsvej 1 DK-4200 Slagelse Denmark

Sentinel prey can provide a direct, quantitative measure of predation under field conditions. live sentinel prey provides more realistic data but rarely allows the partitioning of the total predation pressure; artificial prey is less natural but traces left by different predators are identifiable, making it suitable for comparative studies. We reviewed the available evidence of the use of both types of invertebrate sentinel prey. Fifty- seven papers used real prey, usually measuring predation on a focal （often pest） species, with studies overwhelmingly from North America. The median predation was 25.8% d-1. Artificial sentinel prey （45 papers） were used in both temperate and tropical areas, placed more above ground than at ground level. The most commonly used artificial prey imitated a caterpillar. Up to 14 predator groups were identified, registering a median of 8.8% d J predation; half the studies reported only bird predation. Predation on real prey was higher than on artificial ones, but invertebrate predation was not higher than vertebrate predation. Invertertebrate but not vertebrate predation was negatively related to prey size. Predation near the Equator was not higher than at higher latitudes, nor in cultivated than noncultivated habitats. The use of sentinel prey is not yet standardised in terms of prey size, arrangement, exposure period or data reporting. Due to the simplicity and ease of use of the method, such standardisation may increase the usefulness of comparative studies, contributing to the understanding of the importance and level of predation in various habitats worldwide.

关键词： arthropods artificial caterpillar biological control ecosystem service mortality top-down effects

Using Symbolic Computation to Exactly Solve the Integrable Broer-Kaup Equations in （2＋1）-Dimensional Spaces

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Communications in Theoretical Physics 2005年第4期43卷 585-590页

作者： CHENJing XIEFu-Ding lüZhuo-Sheng DepartmentofComputerScience LiaoningNormalUniversityDalian116029China Keylaboratoryofmathematicsmechanization InstituteofSystemsSciencesAcademyofMathematicsandSystemsSciencestheChineseAcademyofSciencesBeijing100080China

The extended tanh method is further improved by generalizing the Riccati equation and introducing its twenty seven new solutions. As its application, the (2+ 1)-dimensional Broer-Kaup equation is investigated and then its fifty four non-travelling wave solutions have been obtained. The results reported in this paper show that this method is more powerful than those, such as tanh method, extended tanh method, modified extended tanh method and Riccati equation expansion method introduced in previous literatures.

关键词： BK equations symbolic computation non-travelling wave solution

与燃煤机组耦合的液化空气储能系统技术经济分析

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动力工程学报 2024年第3期44卷 385-395页

作者：史幸平刘乙学王妍张千旭安旭刚吕凯何青华北电力大学能源动力与机械工程学院北京102206 西安热工研究院有限公司西安710054

液化空气储能(liquefied air energy storage, lAES)因其存储规模大和不受地理条件限制的独特优势,可参与现有燃煤机组的调峰改造,以推进新型电力系统的建设发展。为此提出一种与燃煤机组耦合的新型lAES系统,并且建立耦合系统的热力学... 详细信息

液化空气储能(liquefied air energy storage, lAES)因其存储规模大和不受地理条件限制的独特优势,可参与现有燃煤机组的调峰改造,以推进新型电力系统的建设发展。为此提出一种与燃煤机组耦合的新型lAES系统,并且建立耦合系统的热力学模型和经济性模型,分析储能容量变化对耦合系统的影响。结果表明:与某670 mW燃煤机组耦合时,可以综合考虑选择44.2 mW/176.8 mW·h的液化空气储能系统。在燃煤机组的3种低负荷(30%THA、40%THA和50%THA)工况下,耦合运行的lAES系统的往返效率在51%左右,比单独运行的lAES系统高出大约9个百分点。耦合运行的lAES系统的投资收益率接近10%,14 a之内可实现投资回收。敏感性分析显示增大峰谷电价差有利于提升系统的经济性能。

关键词：液化空气储能燃煤机组耦合经济性敏感性