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O. Henry-Style Ending and Its Influence
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作者 WANG Zhe 《Sino-US English Teaching》 2020年第6期198-202,共5页
The writer O.Henry was famous for surprising endings,which is a common feature of his short stories.They have original plots and usually end in a way that you can never imagine.Because of his humorous language,his uni... The writer O.Henry was famous for surprising endings,which is a common feature of his short stories.They have original plots and usually end in a way that you can never imagine.Because of his humorous language,his unique narrative skills,and his unexpected and reasonable ending,O.Henry got a high reputation.His execllent technique of writng is more obvious for the irony of reality and the return of human nature.The O.Henry-style ending opened up the pluralistic development of later realistic literature.The highly critical ending of its turning point also promotes the practical significance of the reaction of world literature to society. 展开更多
关键词 the features of O.Henry-style endings the functions of O.Henry-style endings the influence of O.Henry-style endings
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回归与发展——Blending Learning下对信息技术教育应用发展方向的几点思考 被引量:2
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作者 张勇强 张世禄 马莉 《现代远距离教育》 CSSCI 2006年第5期63-64,共2页
本文从Blending Learning新涵义的角度思考,教学因素的重要组成部分之一———信息技术教育应用,在这场历史性的大变革中应何去何从?并从信息技术教育应用的发展历程,信息技术教育应用的现状分析,Blending Learning下的信息技术教育应... 本文从Blending Learning新涵义的角度思考,教学因素的重要组成部分之一———信息技术教育应用,在这场历史性的大变革中应何去何从?并从信息技术教育应用的发展历程,信息技术教育应用的现状分析,Blending Learning下的信息技术教育应用以及信息技术与课堂教学的有效整合四个方面加以阐述。 展开更多
关键词 B1ending LEARNING 信息技术教育应用 信息技术与课堂整舍
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A Good Beginning and Ending Highlight a Speech
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作者 曾艳山 刘诺亚 《海外英语》 2012年第6X期126-127,共2页
A good beginning grasps the audience's attention,arouses their interest,and presents the gist of your speech,while a good ending reinforces your stance,creates a sense of completeness and leaves the listeners spac... A good beginning grasps the audience's attention,arouses their interest,and presents the gist of your speech,while a good ending reinforces your stance,creates a sense of completeness and leaves the listeners space for further thinking. 展开更多
关键词 BEGINNING ending SPEECH TIP
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A mathematics model investigation of ideal fluids in a pipeline of moving ending 被引量:4
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作者 陈彬 易孟林 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2007年第2期259-262,共4页
A case of ideal fluid flow in a moving ending rigid constant diameter circular pipeline is investigated. A model of the pipeline was established based on distributed-parameter theory. The comparisons on a quotient mod... A case of ideal fluid flow in a moving ending rigid constant diameter circular pipeline is investigated. A model of the pipeline was established based on distributed-parameter theory. The comparisons on a quotient module of output and input pressure of the moving ending model and neglected ending moving model are made on the frequency response. It is revealed that the moving ending of pipeline influences largely the quotient amplitude of output and input pressure, and the peak value of frequency resonance increases with the increase of pipeline’s length. 展开更多
关键词 a pipeline of moving ending distributed-parameter model the quotient amplitude of output and input pressure the peak value of frequency resonance
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Methylation reactions at dopaminergic nerve endings, serving as biological off-switches in managing dopaminergic functions
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作者 Clivel G.Charlton 《Neural Regeneration Research》 SCIE CAS CSCD 2014年第11期1110-1111,共2页
The mechanisms for the regulation of synaptic dopamine (DA) include its release from presynaptic vesicles, its interaction with post-synaptic and pre-synaptic DA receptors, the reuptake of DA, via dopamine transport... The mechanisms for the regulation of synaptic dopamine (DA) include its release from presynaptic vesicles, its interaction with post-synaptic and pre-synaptic DA receptors, the reuptake of DA, via dopamine transporter (DAT), the diffusion of DA and its metabolism by mono-amine oxidase (MAO) and cate- chol-O-methyl transferase (COMT). DA controls complex and specialized functions including, movements, behavior, mood, perception, reward, and more recently, neurogenesis (Popolo et al., 2004; Reimer et al., 2013) and neuroregeneration (Hoglinger et al., 2004; Yang et al., 2008). These functions are varied and of high fidelity. Movement, as an example, requires regulatory mechanisms for initiating, stopping, slowing-down speed- ing-up, changing directions, for governing the relentless urges to move in the young and sedentariness in the old as well as in motor-freezing, catalepsy, tremor and stereotypy. 展开更多
关键词 DAT serving as biological off-switches in managing dopaminergic functions Methylation reactions at dopaminergic nerve endings COMT
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Fracture Healing in a Denervation and/or Nerve Ending Interpositioning Model in the Rat
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作者 Cagri Yegengil Mahmut Pekedis Hasan Yildiz 《International Journal of Clinical Medicine》 2011年第3期301-306,共6页
Background: In this experimental study, we aimed to determine the possible changes in fracture healing due to denervation and/or nerve ending interpositioning. Methods: 50 Wistar Albino type male rats were divided int... Background: In this experimental study, we aimed to determine the possible changes in fracture healing due to denervation and/or nerve ending interpositioning. Methods: 50 Wistar Albino type male rats were divided into three study groups. A standard transverse diaphysial fracture in the femurs of the same side of all subjects under anesthesia was created and the fracture were fixed intramedullarily. While preserving the structural integrity of the sciatic nerve in the first group, neurectomy to the nerve in the second group was performed. In the third group, following the sciatic nerve cut, the proximal end of the nerve were interposed the fracture line. After a 28-day observational period, the callus formation in the subjects was examined radiologically, biomechanically and histopathologically. Results: Among all groups, the third group subjects showed significant increase in radiological area measurements when they are compared to the second group rats. There was no significant difference in biomechanical measurements of fractured femurs of the three groups. In histopathological evaluations, it was observed that denervation had increased the thickness of the cartilage and the number of the chondrocytes and osteoclasts significantly but decreased the number of fibroblasts compared to the control group. In addition to the denervation nerve ending interpositioning increased the bone thickness and the number of the osteoblasts but decreased the number of the osteoclasts significantly. Conclusions: While radiological observations exhibit that nerve ending interpositioning has resulted more hypertrophic callus formation, histopathological evaluations led us to that denervation created partial (immature) callus formation and nerve ending interpositioning demonstrated larger but immature callus formation. 展开更多
关键词 DENERVATION NERVE ending INTERPOSITION Fracture HEALING CALLUS Formation
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Out of Absurdity On the Ending of Catch-22
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作者 YE La-mei 《Journal of Literature and Art Studies》 2014年第6期423-435,共13页
As one of the first and most original creations of literary postmodernism, published in the year 1961, Catch-22's (1961) position in American literature remains secure. Yet its ending has been held as unconvincing ... As one of the first and most original creations of literary postmodernism, published in the year 1961, Catch-22's (1961) position in American literature remains secure. Yet its ending has been held as unconvincing ever since its publication. Taking the overall structure, tone, and the theme of the novel into consideration, this paper aims to prove the credibility of this controversial part. It consists of five sections apart from an introduction and a conclusion. Section One provides general information on the life and works of Joseph Heller. Section Two traces the impact of existentialism and the generation of black humor to clarify the literary position of Catch-22. Section Three brings out the disputative opinions on the ending part. Sections Four and Five, try to prove Yossarian's final desertion a natural and convincing ending from different perspectives: Section Four analyses how Yossarian gains an entropic vision of the cosmos; section Five studies his existential vision of physical life and searches for the immediate factors that propel Yossarian's desertion. Section five also explains the ending's change in tone and structure. The conclusion summarizes the paper and points out the social significance of the novel. 展开更多
关键词 ABSURDITY CATCH-22 the ending
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悦享童趣 萌宝总动员——记第一届运通兴宝亲子嘉年华happy ending
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《中国集体经济》 2014年第23期116-117,共2页
10月19日,很多"自强不吸,抗霾到底"的马拉松战士在市区内坚持"北马"比赛。而一些有先见之明的BMW车主潮爸辣妈们则带着宝宝早早集结在北京运通兴宝4S店,应邀前来参加"悦享童趣,萌宝总动员"北京运通兴宝... 10月19日,很多"自强不吸,抗霾到底"的马拉松战士在市区内坚持"北马"比赛。而一些有先见之明的BMW车主潮爸辣妈们则带着宝宝早早集结在北京运通兴宝4S店,应邀前来参加"悦享童趣,萌宝总动员"北京运通兴宝亲子嘉年华,整装待发去往顺义的意大利农场,在各种绿树森林植被的"天然氧吧"环抱下,将可怕雾霾远远甩在身后,与宝宝和其他BMW家庭及运通兴宝的工作人员一起DIY西餐甜点、共享意式美味大餐、游戏竞赛赢取运通兴宝VIP大奖…… 展开更多
关键词 HAPPY 天然氧吧 森林植被 主潮 ending 活动经验 食材 宝精 个性化关怀 舒适感受
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FE Study for Reducing Forming Forces and Flat End Areas of Cylindrical Shapes Obtained by the Roll-Bending Process
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作者 Quan Hoang Tran Henri Champliaud Zhengkun Feng Thien My Dao 《Journal of Mechanics Engineering and Automation》 2014年第6期467-475,共9页
A roll-bending process that minimizes the flat areas on the leading and trailing ends of formed plates will produce more accurate and easier assemble final shapes. There are several methods of minimizing flat areas, b... A roll-bending process that minimizes the flat areas on the leading and trailing ends of formed plates will produce more accurate and easier assemble final shapes. There are several methods of minimizing flat areas, but they are costly or difficult to apply for thick plates. This study proposes a new, simple approach that reduces these flat areas. This approach includes moving the bottom roll slightly along the feeding direction and adjusting the bottom roll location. Sensitivity analyses were performed using a developed 3D dynamic FE (finite element) model of an asymmetrical roll-bending process in the Ansys/LS-Dyna software package. Simulations were validated by experiments run on an instrumented roll-bending machine. The FE results indicate that this new approach not only minimizes the flat areas but also reduces the forming forces. 展开更多
关键词 Roll-bending process flat end areas dynamic FEM simulation Ansys/LS-Dyna.
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On Sarah's Final Freedom-Interpretation of the last ending of The French Lieutenant's woman
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作者 彭美容 《海外英语》 2013年第15期194-195,197,共3页
The French Lieutenant's Woman is the best-known novel written by John Fowles and is also called the post-modern metafiction.In the novel the mysterious woman Sarah is introduced,who rebels against Victorian conven... The French Lieutenant's Woman is the best-known novel written by John Fowles and is also called the post-modern metafiction.In the novel the mysterious woman Sarah is introduced,who rebels against Victorian conventions to pursue independence and freedom.Undoubtedly,Sarah is an independent woman ahead of her times.This paper is attempted to interpret the last ending of The French Lieutenant's woman written by John Fowles,thus finding relevant evidence to support this interpretation that Sarah has finally got her freedom which is not allowed against the Victorian background. 展开更多
关键词 LAST ending FREEDOM VICTORIAN BACKGROUND
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Happy Ending
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作者 吴非 《大学(指南)》 2010年第1期92-93,共2页
“你看这两个哪个好看?” “都挺好。”尹思洁愎诽,价钱更好看。帮刘芳芳抱着背包,看她拿两条裤子在身上比来比去。
关键词 《Happy ending 散文 吴非 文学作品
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ZY-1 02C Flew into Space-A Perfect Ending for the 2011 Space Launches
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《Aerospace China》 2011年第4期22-,共1页
at 11:26 on December 22,a LM-4B launch vehicle lifted the ZY-1 02C satellite into space from the Taiyuan Satellite Launch Center,marking the complete success of the final launch mission of this year.13 minutes later,t... at 11:26 on December 22,a LM-4B launch vehicle lifted the ZY-1 02C satellite into space from the Taiyuan Satellite Launch Center,marking the complete success of the final launch mission of this year.13 minutes later,the satellite entered into sun-synchronous circular orbit after separating with the rocket. 展开更多
关键词 ZY-1 02C Flew into Space-A Perfect ending for the 2011 Space Launches CASC
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Coupled bending-torsion vibration of a homogeneous beam with a single delamination subjected to axial loads and static end moments 被引量:1
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作者 Yang Liu Dong-Wei Shu 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2014年第4期607-614,共8页
Delaminations in structures may significantly reduce the stiffness and strength of the structures and may affect their vibration characteristics. As structural components, beams have been used for various purposes, in... Delaminations in structures may significantly reduce the stiffness and strength of the structures and may affect their vibration characteristics. As structural components, beams have been used for various purposes, in many of which beams are often subjected to axial loads and static end moments. In the present study, an analytical solution is developed to study the coupled bending-torsion vibration of a homogeneous beam with a single delamination subjected to axial loads and static end moments. Euler-Bernoulli beam theory and the "free mode" assumption in delamination vibration are adopted. This is the first study of the influences of static end moments upon the effects of delaminations on natural frequencies, critical buckling loads and critical moments for lateral instability. The results show that the effects of delamination on reducing natural frequencies, critical buckling load and critical moment for lateral instability are aggravated by the presence of static end moment. In turn, the effects of static end moments on vibration and instability characteristics are affected by the presence of delamination. The analytical results of this study can serve as a benchmark for finite element method and other numerical solutions. 展开更多
关键词 Vibration · Delamination ·End moments · Nat-ural frequency · Critical moment for lateral instability
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Step‑by‑Step Modulation of Crystalline Features and Exciton Kinetics for 19.2%Efficiency Ortho‑Xylene Processed Organic Solar Cells 被引量:1
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作者 Bosen Zou Weiwei Wu +10 位作者 Top Archie Dela Pena Ruijie Ma Yongmin Luo Yulong Hai Xiyun Xie Mingjie Li Zhenghui Luo Jiaying Wu Chuluo Yang Gang Li He Yan 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第2期258-272,共15页
With plenty of popular and effective ternary organic solar cells(OSCs)construction strategies proposed and applied,its power conversion efficiencies(PCEs)have come to a new level of over 19%in single-junction devices.... With plenty of popular and effective ternary organic solar cells(OSCs)construction strategies proposed and applied,its power conversion efficiencies(PCEs)have come to a new level of over 19%in single-junction devices.However,previous studies are heavily based in chloroform(CF)leaving behind substantial knowledge deficiencies in understanding the influence of solvent choice when introducing a third component.Herein,we present a case where a newly designed asymmetric small molecular acceptor using fluoro-methoxylated end-group modification strategy,named BTP-BO-3FO with enlarged bandgap,brings different morphological evolution and performance improvement effect on host system PM6:BTP-eC9,processed by CF and ortho-xylene(o-XY).With detailed analyses supported by a series of experiments,the best PCE of 19.24%for green solvent-processed OSCs is found to be a fruit of finely tuned crystalline ordering and general aggregation motif,which furthermore nourishes a favorable charge generation and recombination behavior.Likewise,over 19%PCE can be achieved by replacing spin-coating with blade coating for active layer deposition.This work focuses on understanding the commonly met yet frequently ignored issues when building ternary blends to demonstrate cutting-edge device performance,hence,will be instructive to other ternary OSC works in the future. 展开更多
关键词 Organic solar cells Ternary design Solvent selection Flouro-methoxylated end group Morphological ordering
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Effects of Maillard reaction and its product AGEs on aging and age-related diseases 被引量:1
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作者 Huan Peng Yuqi Gao +4 位作者 Chenye Zeng Rui Hua Yannan Guo Yida Wang Zhao Wang 《Food Science and Human Wellness》 SCIE CSCD 2024年第3期1118-1134,共17页
Maillard reaction(MR)is a non-enzymatic browning reaction commonly seen in food processing,which occurs between reducing sugars and compounds with amino groups.Despite certain advantages based on Maillard reaction pro... Maillard reaction(MR)is a non-enzymatic browning reaction commonly seen in food processing,which occurs between reducing sugars and compounds with amino groups.Despite certain advantages based on Maillard reaction products(MRPs)found in some food for health and storage application have appeared,however,the MR occurring in human physiological environment can produce advanced glycation end products(AGEs)by non-enzymatic modification of macromolecules such as proteins,lipids and nucleic acid,which could change the structure and functional activity of the molecules themselves.In this review,we take AGEs as our main object,on the one hand,discuss physiologic aging,that is,age-dependent covalent cross-linking and modification of proteins such as collagen that occur in eyes and skin containing connective tissue.On the other hand,pathological aging associated with autoimmune and inflammatory diseases,neurodegenerative diseases,diabetes and diabetic nephropathy,cardiovascular diseases and bone degenerative diseases have been mainly proposed.Based on the series of adverse effects of accelerated aging and disease pathologies caused by MRPs,the possible harm caused by some MR can be slowed down or inhibited by artificial drug intervention,dietary pattern and lifestyle control.It also stimulates people's curiosity to continue to explore the potential link between the MR and human aging and health,which should be paid more attention to for the development of life sciences. 展开更多
关键词 Maillard reaction Advanced glycation end products Physiologic aging Pathological aging Drug intervention
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N400 elicited by incongruent ending words of Chinese idioms in healthy adults 被引量:8
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作者 CHEN Xing-shi TANG Yun-xiang +7 位作者 XIAO Ze-ping WANG Ji-jun ZHANG Ming-dao ZHANG Zai-fu HU Zhen-yu LOU Fei-ying CHEN Chong ZHANG Tian-hong 《Chinese Medical Journal》 SCIE CAS CSCD 2010年第6期686-689,共4页
Background Prior research about N400 has been mainly based on English stimuli,while the cognitive.processing of Chinese characters is still unclear.The aim of the present study was to further investigate the semantic ... Background Prior research about N400 has been mainly based on English stimuli,while the cognitive.processing of Chinese characters is still unclear.The aim of the present study was to further investigate the semantic processing of Chinese idioms.Methods Event related potentials (ERP) component N400 was elicited by 38 pairs of matching (congruent) and mismatching (incongruent) ended Chinese idioms:ending words with same phoneme but different shape and meaning (sPdSdM),with similar shape but different phoneme and meaning(sSdPdM),with same meaning but different phoneme and shape(sMdPdS),and words with different phoneme,shape and meaning(dPdSdM)and recorded by Guangzhou Runjie WJ-1 ERP instruments.In 62 right-handed healthy adults(age 19-50 years),N400 amplitudes and latencies were compared between matching and mismatching conditions at Fz,Cz and Pz.Results N400 showed a midline distribution and could be elicited in electrodes Fz, Cz and Pz.The mean values of N400 latencies and amplitudes were obtained for matching and mismatching ending werds in healthy adults.Significant differences were found in N400 latencies and amplitudes in matching and mismatching ending-werds idioms in healthy adults(P〈0.05).Compared with matching ending-werds jdioms, N400 latencies were prolonged and the amplitudes were increased in mismatching ones.N400s elicited by different types of stimuli showed different latencies and amplitudes.and longest N400 latency and largest N400 amplitude were elicited by ending-werds with dPdSdM.No gender difference was found of N400 latency and amplitude in this study (P〉0.05).Conclusions Compared with English stimuli.Chinese ideographic words could provide more flexible stimuli for N400 research in that the werds have 3-dimension changes-phoneme.shape and meaning.Features of N400 elicited by matching and mismatching ending words in Chinese idioms are mainly determined by the meaning of the werd.Some issues of N400 elicited by Chinese characters deserve further research. 展开更多
关键词 healthy adult N400 ending words Chinese idioms
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High glucose reduces Nrf2-dependent cRAGE release and enhances inflammasome-dependent IL-1βproduction in monocytes:the modulatory effects of EGCG 被引量:1
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作者 Chi-Hao Wu Yin-Hsuan Chang +2 位作者 Chin-Lin Hsu Sheng-Yi Chen Gow-Chin Yen 《Food Science and Human Wellness》 SCIE CSCD 2024年第3期1531-1542,共12页
Soluble receptor for advanced glycation end products(sRAGE)acts as a decoy sequestering of RAGE ligands,thus preventing the activation of the ligand-RAGE axis linking human diseases.However,the molecular mechanisms un... Soluble receptor for advanced glycation end products(sRAGE)acts as a decoy sequestering of RAGE ligands,thus preventing the activation of the ligand-RAGE axis linking human diseases.However,the molecular mechanisms underlying sRAGE remain unclear.In this study,THP-1 monocytes were cultured in normal glucose(NG,5.5 mmol/L)and high glucose(HG,15 mmol/L)to investigate the effects of diabetesrelevant glucose concentrations on sRAGE and interleukin-1β(IL-1β)secretion.The modulatory effects of epigallocatechin gallate(EGCG)in response to HG challenge were also evaluated.HG enhanced intracellular reactive oxygen species(ROS)generation and RAGE expression.The secretion of sRAGE,including esRAGE and cRAGE,was reduced under HG conditions,together with the downregulation of a disintegrin and metallopeptidase 10(ADAM10)and nuclear factor erythroid 2-related factor 2(Nrf2)nuclear translocation.Mechanistically,the HG effects were counteracted by siRAGE and exacerbated by siNrf2.Chromatin immunoprecipitation results showed that Nrf2 binding to the ADAM10 promoter and HG interfered with this binding.Our data reinforce the notion that RAGE and Nrf2 might be sRAGE-regulating factors.Under HG conditions,the treatment of EGCG reduced ROS generation and RAGE activation.EGCG-stimulated cRAGE release was likely caused by the upregulation of the Nrf2-ADAM10 pathway.EGCG inhibited HG-mediated NLRP3 inflammasome activation at least partly by stimulating sRAGE,thereby reducing IL-1βrelease. 展开更多
关键词 Epigallocatechin gallate(EGCG) INFLAMMASOME Nuclear factor erythroid 2-related factor 2(Nrf2) Receptor for advanced glycation end products(RAGE) Soluble RAGE(sRAGE)
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End-group modulation of phenazine based non-fullerene acceptors for efficient organic solar cells with high open-circuit voltage
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作者 Yahui Zhang Yafeng Li +7 位作者 Ruixiang Peng Yi Qiu Jingyu Shi Zhenyu Chen Jinfeng Ge Cuifen Zhang Zheng Tang Ziyi Ge 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第1期461-468,I0011,共9页
Phenazine-based non-fullerene acceptors(NFAs)have demonstrated great potential in improving the power conversion efficiency(PCE)of organic solar cells(OSCs).Halogenation is known to be an effective strategy for increa... Phenazine-based non-fullerene acceptors(NFAs)have demonstrated great potential in improving the power conversion efficiency(PCE)of organic solar cells(OSCs).Halogenation is known to be an effective strategy for increasing optical absorption,refining energy levels,and improving molecular packing in organic semiconductors.Herein,a series of NFAs(Pz IC-4H,Pz IC-4F,Pz IC-4Cl,Pz IC-2Br)with phenazine as the central core and with/without halogen-substituted(dicyanomethylidene)-indan-1-one(IC)as the electron-accepting end group were synthesized,and the effect of end group matched phenazine central unit on the photovoltaic performance was systematically studied.Synergetic photophysical and morphological analyses revealed that the PM6:Pz IC-4F blend involves efficient exciton dissociation,higher charge collection and transfer rates,better crystallinity,and optimal phase separation.Therefore,OSCs based on PM6:Pz IC-4F as the active layer exhibited a PCE of 16.48%with an open circuit voltage(Voc)and energy loss of 0.880 V and 0.53 e V,respectively.Accordingly,this work demonstrated a promising approach by designing phenazine-based NFAs for achieving high-performance OSCs. 展开更多
关键词 Organic solar cells Non-fullerene acceptor PHENAZINE Central core End group
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MGMT activated by Wnt pathway promotes cisplatin tolerance through inducing slow-cycling cells and nonhomologous end joining in colorectal cancer
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作者 Haowei Zhang Qixin Li +9 位作者 Xiaolong Guo Hong Wu Chenhao Hu Gaixia Liu Tianyu Yu Xiake Hu Quanpeng Qiu Gang Guo Junjun She Yinnan Chen 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2024年第6期863-877,共15页
Chemotherapy resistance plays a pivotal role in the prognosis and therapeutic failure of patients with colorectal cancer(CRC).Cisplatin(DDP)-resistant cells exhibit an inherent ability to evade the toxic chemotherapeu... Chemotherapy resistance plays a pivotal role in the prognosis and therapeutic failure of patients with colorectal cancer(CRC).Cisplatin(DDP)-resistant cells exhibit an inherent ability to evade the toxic chemotherapeutic drug effects which are characterized by the activation of slow-cycle programs and DNA repair.Among the elements that lead to DDP resistance,O^(6)-methylguanine(O^(6)-MG)-DNA-methyltransferase(MGMT),a DNA-repair enzyme,performs a quintessential role.In this study,we clarify the significant involvement of MGMT in conferring DDP resistance in CRC,elucidating the underlying mechanism of the regulatory actions of MGMT.A notable upregulation of MGMT in DDP-resistant cancer cells was found in our study,and MGMT repression amplifies the sensitivity of these cells to DDP treatment in vitro and in vivo.Conversely,in cancer cells,MGMT overexpression abolishes their sensitivity to DDP treatment.Mechanistically,the interaction between MGMT and cyclin dependent kinase 1(CDK1)inducing slow-cycling cells is attainted via the promotion of ubiquitination degradation of CDK1.Meanwhile,to achieve nonhomologous end joining,MGMT interacts with XRCC6 to resist chemotherapy drugs.Our transcriptome data from samples of 88 patients with CRC suggest that MGMT expression is co-related with the Wnt signaling pathway activation,and several Wnt inhibitors can repress drug-resistant cells.In summary,our results point out that MGMT is a potential therapeutic target and predictive marker of chemoresistance in CRC. 展开更多
关键词 Colorectal cancer MGMT Chemotherapy resistance Slow-cycling cells Nonhomologous end joining Wnt pathway
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Antiglycating effects of citrus flavonoids and associated mechanisms
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作者 Yunli Xiao Junfeng Shen +3 位作者 Jianfeng Zhan Limin Guo Chi-Tang Ho Shiming Li 《Food Science and Human Wellness》 SCIE CAS CSCD 2024年第5期2363-2372,共10页
Glycation of proteins and DNA forms advanced glycation end products(AGEs)causing cell and tissue dysfunction and subsequent various chronic diseases,in particular,metabolic and age-related diseases.Targeted AGE inhibi... Glycation of proteins and DNA forms advanced glycation end products(AGEs)causing cell and tissue dysfunction and subsequent various chronic diseases,in particular,metabolic and age-related diseases.Targeted AGE inhibition includes scavengers of reactive carbonyl species(RCS)such as methylglyoxal(MG),glyoxalase-1 enhancers,Nrf2/ARE pathway activators,AGE/RAGE formation inhibitors and other antiglycatng agents.Citrus flavonoids have demonstrated antioxidant and anti-inflammatory effects and are also found to be effective antiglycating agents.Herein,we reviewed the up to date progress of the antiglycation effects of citrus flavonoids and associated mechanisms.Major citrus flavonoids,hesperedin and its aglycone,hesperetin,inhibited glycation by scavenging MG forming mono-or di-flavonoid adducts with MG,enhanced the activity of glyoxase-1,activated Akt/Nrf2 signal pathway while inhibiting AGE/RAGE/NF-κB pathway,reduced the formation of Nε-(carboxylmethyl)lysine(CML)and pentosidine,inhibited aldol reductase activity and decreased the levels of fructosamine.The antiglycating activity and mechanisms of other flavonoids was also summarized in this review.In conclusion,citrus flavonoids possess effective antiglycating activity via different mechanisms,yet there are many challenging questions remaining to be studied in the near future such as in vivo testing and human study of citrus flavonoids for efficacy,effectiveness and adverse effects of citrus flavonoids as a functional food in managing high levels of AGEs and controlling AGE-induced chronic diseases,diabetic complications in particular. 展开更多
关键词 Citrus flavonoids Hesperedin Advanced glycation end products Antiglycation Diabetic complication
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