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FAR591 promotes the pathogenesis and progression of SONFH by regulating Fos expression to mediate the apoptosis of bone microvascular endothelial cells 被引量:1
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作者 Fei Zhang Lei Wei +10 位作者 Lei Wang Tao Wang Zhihong Xie Hong Luo Fanchao Li Jian Zhang wentao dong Gang Liu Qinglin Kang Xuesong Zhu Wuxun Peng 《Bone Research》 SCIE CAS CSCD 2023年第2期398-415,共18页
The specific pathogenesis of steroid-induced osteonecrosis of the femoral head(SONFH)is still not fully understood,and there is currently no effective early cure.Understanding the role and mechanism of long noncoding ... The specific pathogenesis of steroid-induced osteonecrosis of the femoral head(SONFH)is still not fully understood,and there is currently no effective early cure.Understanding the role and mechanism of long noncoding RNAs(lnc RNAs)in the pathogenesis of SONFH will help reveal the pathogenesis of SONFH and provide new targets for its early prevention and treatment.In this study,we first confirmed that glucocorticoid(GC)-induced apoptosis of bone microvascular endothelial cells(BMECs)is a pre-event in the pathogenesis and progression of SONFH.Then,we identified a new lnc RNA in BMECs via lnc RNA/m RNA microarray,termed Fosassociated linc RNA ENSRNOT00000088059.1(FAR591).FAR591 is highly expressed during GC-induced BMEC apoptosis and femoral head necrosis.Knockout of FAR591 effectively blocked the GC-induced apoptosis of BMECs,which then alleviated the damage of GCs to the femoral head microcirculation and inhibited the pathogenesis and progression of SONFH.In contrast,overexpression of FAR591 significantly promoted the GC-induced apoptosis of BMECs,which then aggravated the damage of GCs to the femoral head microcirculation and promoted the pathogenesis and progression of SONFH.Mechanistically,GCs activate the glucocorticoid receptor,which translocates to the nucleus and directly acts on the FAR591 gene promoter to induce FAR591 gene overexpression.Subsequently,FAR591 binds to the Fos gene promoter(–245–51)to form a stable RNA:DNA triplet structure and then recruits TATA-box binding protein associated factor 15 and RNA polymerase II to promote Fos expression through transcriptional activation.Fos activates the mitochondrial apoptotic pathway by regulating the expression of Bcl-2 interacting mediator of cell death(Bim)and P53 upregulated modulator of apoptosis(Puma)to mediate GC-induced apoptosis of BMECs,which leads to femoral head microcirculation dysfunction and femoral head necrosis.In conclusion,these results confirm the mechanistic link between lnc RNAs and the pathogenesis of SONFH,which helps reveal the pathogenesis of SONFH and provides a new target for the early prevention and treatment of SONFH. 展开更多
关键词 PATHOGENESIS prevention inhibited
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Fast Segmentation Method of Sonar Images for Jacket Installation Environment
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作者 Hande Mao Hongzhe Yan +4 位作者 Lei Lin wentao dong Yuhang Li Yuliang Liu Jing Xue 《Intelligent Automation & Soft Computing》 SCIE 2023年第5期1671-1686,共16页
It has remained a hard nut for years to segment sonar images of jacket installation environment,most of which are noisy images with inevitable blur after noise reduction.For the purpose of solutions to this problem,a ... It has remained a hard nut for years to segment sonar images of jacket installation environment,most of which are noisy images with inevitable blur after noise reduction.For the purpose of solutions to this problem,a fast segmen-tation algorithm is proposed on the basis of the gray value characteristics of sonar images.This algorithm is endowed with the advantage in no need of segmentation thresholds.To realize this goal,we follow the undermentioned steps:first,calcu-late the gray matrix of the fuzzy image background.After adjusting the gray value,the image is divided into three regions:background region,buffer region and target regions.Afterfiltering,we reset the pixels with gray value lower than 255 to binarize images and eliminate most artifacts.Finally,the remaining noise is removed by morphological processing.The simulation results of several sonar images show that the algorithm can segment the fuzzy sonar images quickly and effectively.Thus,the stable and feasible method is testified. 展开更多
关键词 Image segmentation sonar image ocean engineering morphological image
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Weaker Interactions in Zn^(2+)and Organic Ion-pre-intercalated Vanadium Oxide toward Highly Reversible Zinc-ion Batteries 被引量:3
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作者 Feng Zhang Xiucai Sun +7 位作者 Min Du Xiaofei Zhang wentao dong Yuanhua Sang Jianjun Wang Yanlu Li Hong Liu Shuhua Wang 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2021年第4期620-630,共11页
Driven by safety issues,environmental concerns,and high costs,rechargeable aqueous zinc-ion batteries(ZIBs)have received increasing attention in recent years owing to their unique advantages.However,the sluggish kinet... Driven by safety issues,environmental concerns,and high costs,rechargeable aqueous zinc-ion batteries(ZIBs)have received increasing attention in recent years owing to their unique advantages.However,the sluggish kinetics of divalent charge Zn^(2+)in the cathode materials caused by the strong electrostatic interaction and their unsatisfactory cycle life hinder the development of ZIBs.Herein,organic cations and Zn^(2+)ions co-pre-inserted vanadium oxide([N(CH_(3))_(4)]_(0.77),Zn_(0.23))V_(8)O_(20)·3.8H_(2)O are reported as the cathode for ultra-stable aqueous ZIBs,in which the weaker electrostatic interactions between Zn^(2+)and organic ion-pinned vanadium oxide can induce the high reversibility of Zn^(2+)insertion and extraction,thereby improving the cycle life.It is demonstrated that([N(CH_(3))_(4)]_(0.77),Zn_(0.23))V_(8)O_(20)·3.8H_(2)O cathodes deliver a discharge capacity of 181 mA h g^(-1)at8 A g^(-1)and ultra-long life span(99.5%capacity retention after 2000 cycles).A reversible Zn^(2+)/H^(+)ions(de)intercalation storage process and pseudocapacitive charge storage are characterized.The weaker interactions between organic ion and Zn^(2+)open a novel avenue for the design of highly reversible cathode materials with long-term cycling stability. 展开更多
关键词 [N(CH_(3))_(4) Zn]V_(8)O_(20)·3.8H_(2)O nanosheets aqueous zinc-ion battery highly reversible organic ion pre-intercalation zinc-carbon interactions
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人工诱导产生类C_(4)高叶脉密度水稻叶片
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作者 董文涛 王鹏 王二涛 《科学通报》 EI CAS CSCD 北大核心 2024年第9期1108-1110,共3页
植物进行光合作用将光能转换为化学能储存在有机物中,以满足自身生长发育的需求.光合作用主要包括光反应和暗反应两个阶段.根据固定CO_(2)后形成的化合物碳原子数目的不同,光合作用可以分为C_(3)光合作用(存在于C_(3)植物)和C_(4)光合作... 植物进行光合作用将光能转换为化学能储存在有机物中,以满足自身生长发育的需求.光合作用主要包括光反应和暗反应两个阶段.根据固定CO_(2)后形成的化合物碳原子数目的不同,光合作用可以分为C_(3)光合作用(存在于C_(3)植物)和C_(4)光合作用(存在于C_(4)植物).在C_(3)植物中,CO_(2)经气孔进入叶片后,在叶肉细胞中被核酮糖-1,5-二磷酸羧化酶/加氧酶(RuBisCO)固定形成三碳化合物,并参与卡尔文循环. 展开更多
关键词 卡尔文循环 光能转换 暗反应 叶脉密度 加氧酶 光反应 碳化合物 人工诱导
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操纵水稻叶片SHR和生长素诱导水稻类C_(4)叶脉分布样式产生 被引量:3
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作者 董文涛 常天根 +7 位作者 戴慧玲 杨卫兵 苏语 晁代印 朱新广 王鹏 于楠 王二涛 《Science Bulletin》 SCIE EI CAS CSCD 2023年第24期3133-3136,M0004,共5页
C_(4)植物叶片的维管束表现出独特的花环结构,该结构由位于内层的维管束鞘细胞和外层的叶肉细胞组成,赋予C_(4)植物拥有相比于C_(3)植物更高的光合速率.目前已鉴定到60多种独立的花环结构变体,暗示花环结构经历了趋同进化.高效的C_(4)... C_(4)植物叶片的维管束表现出独特的花环结构,该结构由位于内层的维管束鞘细胞和外层的叶肉细胞组成,赋予C_(4)植物拥有相比于C_(3)植物更高的光合速率.目前已鉴定到60多种独立的花环结构变体,暗示花环结构经历了趋同进化.高效的C_(4)光合作用依赖于C_(4)植物叶片高的叶脉与叶肉细胞比——这也是C_(4)演化的关键.然而,高叶脉密度形成的机制仍然未知,这阻碍了将C_(4)性状引入C_(3)作物的工程化改造.前人尝试通过在水稻叶片中过量表达调控C_(4)玉米叶脉模式的多种因子,但未能成功诱导出类C_(4)叶脉分布样式的叶片.在本研究中,我们发现在水稻和玉米中过量表达SHORT ROOT(SHR)有助于促进叶肉细胞的分裂,增加相邻叶脉间的细胞数量.水稻和玉米的SHR多突变体叶片的叶肉细胞分裂减少,相邻叶脉之间的叶肉细胞数量显著降低.通过增加C_(3)水稻叶片中SHR和处理生长素,我们在水稻中成功诱导产生了类C_(4)叶脉分布样式的叶片,对C_(3)作物的工程化改造具有重要意义. 展开更多
关键词 维管束鞘细胞 叶肉细胞 水稻叶片 生长素 趋同进化 叶脉密度 光合作用 花环结构
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Calcium ion pinned vanadium oxide cathode for high-capacity and long-life aqueous rechargeable zinc-ion batteries 被引量:2
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作者 Min Du Feng Zhang +5 位作者 Xiaofei Zhang wentao dong Yuanhua Sang Jianjun Wang Hong Liu Shuhua Wang 《Science China Chemistry》 SCIE EI CAS CSCD 2020年第12期1767-1776,共10页
Rechargeable aqueous zinc ion batteries (ZIBs),with the easy operation,cost effectiveness,and high safety,are emerging candidates for high-energy wearable/portable energy storage systems.Unfortunately,the unsatisfacto... Rechargeable aqueous zinc ion batteries (ZIBs),with the easy operation,cost effectiveness,and high safety,are emerging candidates for high-energy wearable/portable energy storage systems.Unfortunately,the unsatisfactory energy density and undesired long-term cycling performance of the cathode hinder the development of ZIBs.Here,we report the chemical preintercalation of a small amount of calcium ions into V2O5 as the cathode material.The cathode of Ca0.04V2O5·1.74H2O (CVO)was demonstrated to have a high specific capacity of 400 mA h g^-1at the current density of 0.05 A g^-1and 187 mA h g^-1at 10 A g^-1,along with impressive capacity retention (100%capacity retention at 10 A g^-1 for 3,000 cycles).Meanwhile,the CVO//Zn battery exhibits a high energy density of 308 Wh kg^-1and a power density of 467 W kg^-1at 0.5 A g^-1.The superior performance originates from the pinning effect of the calcium ions and the lubricating effect of the structural water.The energy storage mechanism of the CVO cathode was also investigated in detail.The new phase (Zn3(OH)2V2O7·2H2O) generated upon cycling participates in the electrochemical reaction and thus contributes to the excellent electrochemical performance.The small amount of Ca^2+ pre-inserted into the interlayer of V2O5 sheds light on constructing cathodes with high energy density for ZIBs. 展开更多
关键词 aqueous zinc-ion battery ion pre-intercalation vanadium pentoxide phase transition energy storage mechanism
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Oxygen vacancies and N-doping in organic–inorganic pre-intercalated vanadium oxide for high-performance aqueous zinc-ion batteries 被引量:1
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作者 Feng Zhang Min Du +7 位作者 Zhenyu Miao Houzhen Li wentao dong Yuanhua Sang Hechun Jiang Wenzhi Li Hong Liu Shuhua Wang 《InfoMat》 SCIE CAS 2022年第11期106-118,共13页
Pre-intercalation of metal ions into vanadium oxide is an effective strategy for optimizing the performance of rechargeable zinc-ion battery(ZIB)cathodes.However,the battery long-lifespan achievement and high-capacity... Pre-intercalation of metal ions into vanadium oxide is an effective strategy for optimizing the performance of rechargeable zinc-ion battery(ZIB)cathodes.However,the battery long-lifespan achievement and high-capacity retention remain a challenge.Increasing the electronic conductivity while simultaneously prompting the cathode diffusion kinetics can improve ZIB electrochemical performance.Herein,N-doped vanadium oxide(N-(Zn,en)VO)via defect engineering is reported as cathode for aqueous ZIBs.Positron annihilation and electron paramagnetic resonance clearly indicate oxygen vacancies in the material.Density functional theory(DFT)calculations show that N-doping and oxygen vacancies concurrently increase the electronic conductivity and accelerate the diffusion kinetics of zinc ions.Moreover,the presence of oxygen vacancies substantially increases the storage sites of zinc ions.Therefore,N-(Zn,en)VO exhibits excellent electrochemical performance,including a peak capacity of 420.5 mA h g^(-1)at 0.05 A g^(-1),a high power density of more than 10000 W kg^(-1)at 65.3 Wh kg^(-1),and a long cycle life at 5 A g^(-1)(4500 cycles without capacity decay).The methodology adopted in our study can be applied to other cathodic materials to improve their performance and extend their practical applications. 展开更多
关键词 aqueous zinc ion batteries cathode nitrogen doping organic–inorganic pre-intercalation oxygen vacancy
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Stretchable human-machine interface based on skin-conformal sEMG electrodes with self-similar geometry 被引量:3
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作者 wentao dong Chen Zhu +2 位作者 Wei Hu Lin Xiao Yong'an Huang 《Journal of Semiconductors》 EI CAS CSCD 2018年第1期208-214,共7页
Current stretchable surface electrodes have attracted increasing attention owing to their potential applications in biological signal monitoring, wearable human-machine interfaces(HMIs) and the Internet of Things. T... Current stretchable surface electrodes have attracted increasing attention owing to their potential applications in biological signal monitoring, wearable human-machine interfaces(HMIs) and the Internet of Things. The paper proposed a stretchable HMI based on a surface electromyography(sEMG) electrode with a self-similar serpentine configuration. The sEMG electrode was transfer-printed onto the skin surface conformally to monitor biological signals, followed by signal classification and controlling of a mobile robot. Such electrodes can bear rather large deformation(such as 〉30%) under an appropriate areal coverage. The sEMG electrodes have been used to record electrophysiological signals from different parts of the body with sharp curvature, such as the index finger,back of the neck and face, and they exhibit great potential for HMI in the fields of robotics and healthcare. The electrodes placed onto the two wrists would generate two different signals with the fist clenched and loosened. It is classified to four kinds of signals with a combination of the gestures from the two wrists, that is, four control modes. Experiments demonstrated that the electrodes were successfully used as an HMI to control the motion of a mobile robot remotely. 展开更多
关键词 electromyography stretchable electronics e-skin biological signal monitoring human-machine interface
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