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15篇 您的检索式:作者名="Jinfeng Ge"
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1High efficiency ternary organic solar cells enabled by compatible dual-donor strategy with planar conjugated structures显示文摘Ternary organic solar cells(OSCs) have received extensive attention for improving the power conversion efficiency(PCE) of organic photovoltaics(OPVs). In this work, a novel donor material(ECTBD) consisting of benzodithiophene(BDT) central electron donor unit was developed and synthesized. The small molecular donor has the same central unit as PM6. The addition of ECTBD into PM6:Y6 system could improve the morphology of active blend layer. In addition, ECTBD showed good morphologically compatibility when blending with PM6:Y6 host, resulting in the improvement of fill factor and current density. As a result, the ternary devices based on PM6:ECTBD:Y6 ternary system achieved a highest PCE of 16.51% with fill factor of 76.24%, which was much higher than that of the binary devices(15.7%). Overall, this work provided an effective strategy to fabricate highly efficient ternary organic solar cells through design of the novel small molecular donor as the third component.Sanhui Chen Tingting Yan Billy Fanady Wei Song Jinfeng Ge Qiang Wei Ruixiang Peng Guohui Chen Yingping Zou Ziyi Ge 2020Science China Chemistry2020,63,7:2
2Misallocation in Chinese Manufacturing and Services: A Variable Markup Approach显示文摘Cross-country comparison reveals an unusually small service sector in China. Using firm-level data from Chinas 2008 economic census, we find two facts that speak to a novel mechanism of misallocation within service and between manufacturing and service sectors. First, compared with the manufacturing sector, there are more stateowned enterprises and fewer entrants in the service sector. Second, markups increase with firm size, and the increase is more dramatic among service firms. We interpret these facts through the lens of a monopolistic competition model with heterogeneous firms and variable markups. A multisector model shows a new channel that translates asymmetric barriers to entry across sectors into sectoral markup differences, which in turn cause sectoral misallocation. Quantitative analysis shows that when reducing entry barriers to service firms to the extent observed for manufacturing firms, the model predicts a 12-percentage-point increase in the service employment share.Jinfeng Ge Jie Luo Yangzhou Yuan 2019China & World Economy2019,27,4:1
3Risk factors of recurrent acute pancreatitis after conservative treatment in pediatric population: a single-center study显示文摘Background Although complete resolution and recovery occurs in most children with an initial attack of acute pancreatitis(AP),a subset of children may progress to recurrent AP(RAP).RAP has serious effects to the individual and the socioeconomic burden.The aim of this project was to identify the independent risk factors for pediatric RAP so as to provide evidence for its prevention,early diagnosis and treatment.Methods A retrospective cohort study of children discharged from Tianjin Children’s Hospital from June 2017 to January 2020 was performed.Demographic and clinical variables,treatment strategies,clinical course and outcomes were collected.Independent risk factors of RAP were identified using the logistic regression model.Results Of the total 96 enrolled children,30(31.3%)developed RAP during the follow-up period.The majority(27/30,90%)of the children with AP developed RAP within 6 months of their first AP attack.The presence of systemic inflammatory response syndrome(SIRS)[odds ratio(OR)=6.652,95%confidence interval(CI)1.989 to 22.247],fasting time(OR=1.267,95%CI 1.104 to 1.583),whether meet all three AP diagnostic criteria(OR=7.438,95%CI 1.346 to 41.103)and abnormal amylase/lipase value on the seventh day of hospitalization(OR=3.601,95%CI 0.972 to 13.342)were independent risk factors of RAP in children.Conclusions Most children who developed RAP had progressed within 6 months after their first episode of AP.RAP was more common in children who met all three AP diagnostic criteria at initial attack and in children with SIRS,long fasting time and abnormal amylase/lipase value on the seventh day of hospitalization.Qipeng Zheng Xueqiang Yan Liang Ge Shujian Zhang Yan Sun Jinfu Jia Shengqiao Zhao Xiaodan Xu Ran Dou Qingyun Gou Jinfeng Zhao Jianghua Zhan 2021World Journal of Pediatric Surgery2021,4,1:1
4Development and Validation of a Nomogram for Prediction of the Risk of MAFLD in an Overweight and Obese Population显示文摘Background and Aims:Metabolic associated fatty liver disease(MAFLD)is a serious condition,and a simple meth-od is needed for practitioners to identify patients with the disease and have a high risk of disease progression.Meth-ods:We developed and validated a nomogram for fatty liver disease and reclassified the risk factors for MAFLD.The development cohort had 335 patients who received bioel-ectrical impedance analysis and liver ultrasound attenua-tion measurements at Shenzhen People’s Hospital between September 2020 and June 2021.The validation cohort had 200 patients from other hospitals who received the same evaluation.A random forest procedure and binary logistic analysis were used to screen for risk factors,establish a fatty liver disease predictive model,and forecast the risk of MAFLD.The performance of the nomogram was evaluated by measurement of discrimination,calibration,and clinical usefulness.Results:The nomogram provided good predic-tions in a model that included body mass index(BMI)and waist circumference.The areas under the curve of the nom-ogram were 0.793 in the development cohort and 0.774 in the validation cohort.The nomogram performed well for calibration,category-free net reclassification improvement,and integrated discrimination improvement.Decision curve analysis indicated the nomogram performed better than BMI for predicting net outcome.Conclusions:The nomo-gram was an effective screening tool for fatty liver disease,and for those overweight individuals,may help physicians make appropriate decisions regarding treatment of MAFLD.Di Song Qian Ge Ming Chen Song Bai Xiaoshu Lai Gege Huang Mengmeng Liu Miaofang Lin Jinfeng Xu Fajin Dong 2022Journal of Clinical and Translational Hepatology2022,10,6:1
5Carbon fluxes, evapotranspiration, and water use efficiency of terrestrial ecosystems in China显示文摘Xiao Jinfeng Sun Ge Chen Jiquan 2013Agricultural and Forest Meteorology2013,18,:1
6An ischemic area-targeting,peroxynitrite-responsive,biomimetic carbon monoxide nanogenerator for preventing myocardial ischemia-reperfusion injury显示文摘Myocardial ischemia-reperfusion (MI/R) injury is common in patients who undergo revascularization therapy for myocardial infarction, often leading to cardiac dysfunction. Carbon monoxide (CO) has emerged as a therapeutic molecule due to its beneficial properties such as anti-inflammatory, anti-apoptotic, and mitochondrial biogenesis-promoting properties. However, its clinical application is limited due to uncontrolled release, potential toxicity, and poor targeting efficiency. To address these limitations, a peroxynitrite (ONOO )-triggered CO donor (PCOD585) is utilized to generate a poly (lactic-co-glycolic acid) (PLGA)-based, biomimetic CO nanogenerator (M/PCOD@PLGA) that is coated with the macrophage membrane, which could target to the ischemic area and neutralize proinflammatory cytokines. In the ischemic area, local produced ONOO triggers the continuous release of CO from M/PCOD@PLGA, which efficiently ameliorates MI/R injury by clearing harmful ONOO , attenuating the inflammatory response, inhibiting cardiomyocyte apoptosis, and promoting mitochondrial biogenesis. This study provides a novel insight into the safe therapeutic use of CO for MI/R injury by utilizing a novel CO donor combined with biomimetic technology. The M/PCOD@PLGA nanogenerator offers targeted delivery of CO to the ischemic area, minimizing potential toxicity and enhancing therapeutic efficacy.Jinyan Zhang Liwei Liu Zhen Dong Xicun Lu Wenxuan Hong Jin Liu Xiaoyi Zou Jinfeng Gao Hao Jiang Xiaolei Sun Kai Hu Youjun Yang Junbo Ge Xiao Luo Aijun Sun 2023Bioactive Materials2023,,10:1
7Improved phase stability of CsPbI2Br perovskite by released microstrain toward highly efficient and stable solar cells显示文摘All-inorganic perovskite solar cells(PSCs)have developed rapidly in the field of photovoltaics due to their excellent thermal and light stability.However,compared with organic–inorganic hybrid perovskites,the phase instability of inorganic perovskite under humidity still remains as a critical issue that ham-pers the commercialization of inorganic PSCs.We originally propose in this work that microstrains between the perovskite lattices/grains play a key role in affecting the phase stability of inorganic perovskite.To this end,we inno-vatively design theπ-conjugated p-type molecule bis(2-ethylhexyl)3,30((4,8-bis(5-(2-ethylhexyl)-3,4-difluorothiophen-2-yl)benzo[1,2-b:4,5-b0]dithiophene-2,6-di yl)bis(3,300-dioctyl[2,20:50,200-terthiophene]-500,5-diyl))(2E,20 E)-bis(2-cyanoacrylate)(BTEC-2F)to covalent with the Pb dangling bonds in CsPbI2Br perovskite film,which significantly suppress the trap states and release the defect-induced local stress between perovskite grains.The interplay between the microstrains and phase stability of the inorganic perovskite are scrutinized by a series of charac-terizations including x-ray photoelectron spectroscopy,photoluminescence,x-ray diffraction,scanning electron microscopy,and so forth,based on which,we conclude that weaker local stresses in the perovskite film engender superior phase stability by preventing the perovskite lattice distortion under humidity.By this rational design,PSCs based on CsPbI2Br perovskite system deliver an outstanding power conversion efficiency(PCE)up to 16.25%.The unencapsulated device also exhibits an exceptional moisture stability by retaining over 80%of the initial PCE after 500 h aging in ambient with relative humidity of(RH)25%.Kanghui Zheng Jinfeng Ge Chang Liu Qiang Lou Xia Chen Yuanyuan Meng Xu Yin Shixiao Bu Cuirong Liu Ziyi Ge 2021InfoMat2021,3,12:1
8A method for extracting rules from spatial data based on rough fuzzy sets显示文摘He Xiang Bai Yong Ge Jinfeng Wang 2014Knowledge-Based Systems2014,,2:1
9Inner alkyl chain modulation of small molecular acceptors enables molecular packing optimization and efficient organic solar cells显示文摘With the generation of Y6,organic solar cells have reached remarkable achievement of over 19%efficiency.Alkyl chain is of importance to modulate intermolecular stacking and possibly enhance optoelectronic properties of small molecule acceptors(SMAs).Three alkyl chains of 2-ethylhexyl,2-butylocyl and 3-ethylheptyl were selected to obtain G6-EH,G6-BO and G6-EHep molecules,respectively.Compared to G6-EH and G6-BO,G6-EHep was found inducing unfavourable large domain size.Furthermore,we discover that 2-butyloctyl effectively inhibits monomolecular and bimolecular recombination,improves molecular packing,generates more balanced carrier mobility and enhances exciton dissociation.The SMA with 2-butyloctyl alkyl chains(G6-BO)shows the best electrical and morphological characteristics,achieving a higher power conversion efficiency(PCE)of 17.06%,with an open circuit voltage of 0.912 V,a short-circuit current of 24.22 m A cm-2and a fill factor of 77.25%.Finally,using the ternary strategy by incorporating the G6-BO acceptor into PM6:BTP-e C9,we achieved a higher PCE of18.13%with enhanced electron transport.Yuntong Guo Zhenyu Chen Jinfeng Ge Jinna Zhang Lin Xie Ruixiang Peng Wei Ma Ziyi Ge 2023Science China Chemistry2023,66,2:0
10不同生境内啮齿动物对辽东栎幼苗的频率依赖性捕食及其对幼苗生长与存活的影响显示文摘啮齿动物对辽东栎(Quercus wutaishanica)种子的侵袭取决于种子的大小及其捕食频率。然而,啮齿动物对幼苗的捕食是否具有频率依赖性还不清楚。本研究在宁夏六盘山区辽东栎次生林内,选取林窗和林下两种生境,按5个种子大小频率(9:1,7:3,5:5,3:7和1:9)移栽萌发生根的辽东栎幼苗,探究啮齿动物对幼苗子叶的频率依赖性捕食及其对幼苗生长与存活的影响。研究结果表明:(i)幼苗移栽初期(1-7天),啮齿动物更偏好大种子建立幼苗的子叶。然而,移栽后8-60天,啮齿动物更偏好小种子建立幼苗的子叶,即表现为正频率依赖性捕食。(ii)尽管幼苗捕食率在林下高于林窗,但经过一个生长周期后,林窗内幼苗存活率高于林下(分别为5.40%和2.00%)。(iii)捕食子叶对辽东栎幼苗生长无显著影响,但顶芽被咬掉后幼苗各生长参数均显著降低(P<0.05)。这些结果不仅为啮齿动物和不同表型辽东栎幼苗的共存提供了新的见解,还揭示了栎树幼苗的更新策略。Jinfeng Zhang Jingru Ge Xingfu Yan Buddhi Dayananda Yonghong Luo Junqing Li 2023Journal of Plant Ecology2023,16,3:0
11Hippo pathway-manipulating neutrophil-mimic hybrid nanoparticles for cardiac ischemic injury via modulation of local immunity and cardiac regeneration显示文摘The promise of regeneration therapy for restoration of damaged myocardium after cardiac ischemic injury relies on targeted delivery of proliferative molecules into cardiomyocytes whose healing benefits are still limited owing to severe immune microenvironment due to local high concentration of proinflammatory cytokines.Optimal therapeutic strategies are therefore in urgent need to both modulate local immunity and deliver proliferative molecules.Here,we addressed this unmet need by developing neutrophil-mimic nanoparticles NM@miR,fabricated by coating hybrid neutrophil membranes with artificial lipids onto mesoporous silica nanoparticles(MSNs)loaded with microRNA-10b.The hybrid membrane could endow nanoparticles with strong capacity to migrate into infammatory sites and neutralize proinfammatory cytokines and increase the delivery efficiency of microRNA-1Ob into adult mammalian cardiomyocytes(CMs)by fusing with cell membranes and leading to the release of MSNs-miR into cytosol.Upon NM@miR administration,this nanoparticle could home to the injured myocardium,restore the local immunity,and efficiently deliver microRNA-1Ob to cardiomyocytes,which could reduce the activation of Hippo-YAP pathway mediated by excessive cytokines and exert the best proliferative effect of miR-1Ob.This combination therapy could finally improve cardiac function and mitigate ventricular remodeling.Consequently,this work offers a combination strategy of immunity modulation and proliferative molecule delivery to boost cardiac regeneration after injury.Qiaozi Wang Yanan Song Jinfeng Gao Qiyu Li Jing Chen Yifang Xie Zhengmin Wang Haipeng Tan Hongbo Yang Ning Zhang Juying Qian Zhiqing Pang Zheyong Huang Junbo Ge 2023Acta Pharmaceutica Sinica B2023,13,12:0
12Audio-Text Multimodal Speech Recognition via Dual-Tower Architecture for Mandarin Air Traffic Control Communications显示文摘In air traffic control communications (ATCC), misunderstandings between pilots and controllers could result in fatal aviation accidents. Fortunately, advanced automatic speech recognition technology has emerged as a promising means of preventing miscommunications and enhancing aviation safety. However, most existing speech recognition methods merely incorporate external language models on the decoder side, leading to insufficient semantic alignment between speech and text modalities during the encoding phase. Furthermore, it is challenging to model acoustic context dependencies over long distances due to the longer speech sequences than text, especially for the extended ATCC data. To address these issues, we propose a speech-text multimodal dual-tower architecture for speech recognition. It employs cross-modal interactions to achieve close semantic alignment during the encoding stage and strengthen its capabilities in modeling auditory long-distance context dependencies. In addition, a two-stage training strategy is elaborately devised to derive semantics-aware acoustic representations effectively. The first stage focuses on pre-training the speech-text multimodal encoding module to enhance inter-modal semantic alignment and aural long-distance context dependencies. The second stage fine-tunes the entire network to bridge the input modality variation gap between the training and inference phases and boost generalization performance. Extensive experiments demonstrate the effectiveness of the proposed speech-text multimodal speech recognition method on the ATCC and AISHELL-1 datasets. It reduces the character error rate to 6.54% and 8.73%, respectively, and exhibits substantial performance gains of 28.76% and 23.82% compared with the best baseline model. The case studies indicate that the obtained semantics-aware acoustic representations aid in accurately recognizing terms with similar pronunciations but distinctive semantics. The research provides a novel modeling paradigm for semantics-aware speech recognition in air traffic control communications, which could contribute to the advancement of intelligent and efficient aviation safety management.Shuting Ge Jin Ren Yihua Shi Yujun Zhang Shunzhi Yang Jinfeng Yang 2024Computers, Materials & Continua2024,78,3:0
13End-group modulation of phenazine based non-fullerene acceptors for efficient organic solar cells with high open-circuit voltage显示文摘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.Yahui Zhang Yafeng Li Ruixiang Peng Yi Qiu Jingyu Shi Zhenyu Chen Jinfeng Ge Cuifen Zhang Zheng Tang Ziyi Ge 2024Journal of Energy Chemistry2024,88,1:0
1418.01%Efficiency organic solar cell and 2.53%light utilization efficiency semitransparent organic solar cell enabled by optimizing PM6:Y6 active layer morphology显示文摘Optimizing the photoactive layer morphology is a simple,promising way to improve the power conversion efficiencies(PCEs)of organic solar cells(OSCs).Here,we compared different post-processing treatments on PM6:Y6 blend films and relevant effects on device performances,including as-cast,thermal annealing and solvent annealing.This solvent annealing processes can effectively improve the vertical distribution and aggregation of polymer donors and small molecule acceptors,then optimize the active layer film morphology,ultimately elevating PCE.Thus,one of champion efficiencies of 18.01%was achieved based on the PM6:Y6 binary OSCs.In addition,a relatively high light utilization efficiency(2.53%)was achieved when a transparent electrode made of Cu(1 nm)and Ag(15 nm)was utilized to fabricate a semitransparent OSC with a remarkable PCE of 13.07%and 19.33%average visible-light transmittance.These results demonstrated that carefully optimizing morphology of active layer is conducive to achieving a high-performance OSC.Kuibao Yu Wei Song Jinfeng Ge Kanghui Zheng Lin Xie Zhenyu Chen Yi Qiu Ling Hong Cuirong Liu Ziyi Ge 2022Science China Chemistry2022,65,8:0
15Early initiation of ARBs without blood pressure risk via neutrophil membrane-fused pH-sensitive liposomes to reduce cardiomyocyte apoptosis after acute myocardial infarction显示文摘Activation of the local renin-angiotensin system(RAS)promotes cardiomyocyte apoptosis and cardiac remodeling after acute myocardial infarction(AMI).As an anti-RAS drug,the effect of Valsartan in the early stage of acute MI is limited by its low drug concentration in the heart and low dosage.Here,by exploiting the inherent nature of neutrophils migrating to the injured myocardium and the local low-pH microenvironment caused by ischemia and hypoxia after myocardial infarction,we designed nanocarrier(NSLP)-hybridized neutrophil membranes and pH-sensitive liposomes(SLPs)for the delivery of Valsartan(NSLPVal).These functional nanocarriers could mimic neutrophils and are homed to the injured heart;they were also found to respond to a low-pH microenvironment.In the mouse model of MI,we found that NSLP-Val could target the infarct marginal zone and release Valsartan locally in the low-pH microenvironment without affecting hemodynamic stability.Further,locally released angiotensin receptor inhibitors reduced the infarct size and inflammatory response by inhibiting cardiomyocytes.Ultimately,NSLP-Val improved cardiac function and inhibited cardiac hypertrophy and fibrosis.Jinfeng Gao Wusiman Yakufu Hongbo Yang Yanan Song Qiaozi Wang Qiyu Li Haipeng Tan Jing Chen Dili Sun Zhengmin Wang Jinyan Zhang Xueyi Weng Juying Qian Zhiqing Pang Qibing Wang Zheyong Huang Junbo Ge 2023Nano Research2023,16,7:0
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