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76篇 您的检索式:作者名="He Yujie"
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1Substance P-modified human serum albumin nanoparticles loaded with paclitaxel for targeted therapy of glioma显示文摘The blood–brain barrier(BBB) and the poor ability of many drugs to cross that barrier greatly limits the efficacy of chemotherapies for glioblastoma multiforme(GBM). The present study exploits albumin as drug delivery vehicle to promote the chemotherapeutic efficacy of paclitaxel(PTX) by improving the stability and targeting efficiency of PTX/albumin nanoparticles(NPs). Here we characterize PTX-loaded human serum albumin(HSA) NPs stabilized with intramolecular disulfide bonds and modified with substance P(SP) peptide as the targeting ligand. The fabricated SP-HSA-PTX NPs exhibited satisfactory drug-loading content(7.89%) and entrapment efficiency(85.7%) with a spherical structure(about 150 nm) and zeta potential of -12.0 mV. The in vitro drug release from SP-HSA-PTX NPs occurred in a redox-responsive manner. Due to the targeting effect of the SP peptide, cellular uptake of SP-HSA-PTX NPs into brain capillary endothelial cells(BCECs) and U87 cells was greatly improved.The low IC_(50), prolonged survival period and the obvious pro-apoptotic effect shown by TUNEL analysis all demonstrated that the fabricated SP-HSA-PTX NPs showed a satisfactory anti-tumor effect and could serve as a novel strategy for GBM treatment.Chunhui Ruan Lisha Liu Yifei Lu Yu Zhang Xi He Xinli Chen Yujie Zhang Qinjun Chen Qin Guo Tao Sun Chen Jiang 2018Acta Pharmaceutica Sinica B2018,8,1:19
2Blocking FSH inhibits hepatic cholesterol biosynthesis and reduces serum cholesterol显示文摘Menopause is associated with dyslipidemia and an increased risk of cardio-cerebrovascular disease.The classic view assumes that the underlying mechanism of dyslipidemia is attributed to an insufficiency of estrogen.In addition to a decrease in estrogen, circulating follicle-stimulating hormone (FSH)levels become elevated at menopause.In this study,we find that blocking FSH reduces serum cholesterol via inhibiting hepatic cholesterol biosynthesis.First,epidemiological results show that the serum FSH levels are positively correlated with the serum total cholesterol levels,even after adjustment by considering the effects of serum estrogen,in addition,the prevalence of hypercholesterolemia is significantly higher in peri-menopausal women than that in premenopausal women.Furthermore,we generated a mouse model of FSH elevation by intraperitoneally injecting exogenous FSH into ovariectomized (OVX)mice,in which a normal level of estrogen (E2)was maintained by exogenous supplementation. Consistently,the results indicate that FSH,independent of estrogen,increases the serum cholesterol level in this mouse model. Moreover,blocking FSH signaling by anti-FSHβ antibody or ablating the FSH receptor (FSHR)gene could effectively prevent hypercholesterolemia induced by FSH injection or high-cholesterol diet feeding.Mechanistically,FSH,via binding to hepatic FSHRs, activates the Gi2α/β-arrestin-2/Akt pathway and subsequently inhibits the binding of FoxO1 with the SREBP-2 promoter,thus preventing FoxO1 from repressing SREBP-2 gene transcription.This effect,in turn,results in the upregulation of SREBP-2,which drives HMGCR nascent transcription and de novo cholesterol biosynthesis,leading to the increase of cholesterol accumulation.This study uncovers that blocking FSH signaling might be a new strategy for treating hypercholesterolemia during menopause, particularly for women in peri-menopause characterized by FSH elevation only.Yanjing Guo Meng Zhao Tao Bo Shizhan Ma Zhongshang Yuan Wenbin Chen Zhao He Xu Hou Jun Liu Zhenhai Zhang Qiang Zhu Qiangxiu Wang Xiaoyan Lin Zhongli Yang Min Cui Lu Liu Yujie Li Chunxiao Yu Xiaoyi Qi Qian Wang Haiqing Zhang Qingbo Guan Lifang Zhao Shimeng Xuan Huili Yan Yanliang Lin Li Wang Qihang Li Yongfeng Song Ling Gao Jiajun Zhao 2019Cell Research2019,29,2:16
3Effects of longitudinal range-gorge terrain on the eco-geographical pattern in Southwest China显示文摘在纵的高耸山和深山谷之间的平行安排在本地自然环境的区别上有重要效果的瓷器西南的特殊地面模式和在这个区域的 eco 地理的模式。 1:50,000 纵的范围峡区域( LRGR )的数字举起模型( DEM )数据,从车站建立的气象学的观察数据到 2010 ,水文学观察数据,规范的差别植被索引( NDVI )和网象 1:1,000,000 植被类型数据一样的 MOD13 和 MOD17 的主要生产率( NPP )产品被使用。包括大气的蒸汽内容,降水,干旱 / 湿度索引,表面流量,和温度索引包括的表面的潮湿索引平均温度,年度积累的温度,全部的太阳的放射被选择。在这个区域基于 ANUSPLIN 花键功能, GIS 空间分析,小浪分析和风景模式分析,地区性的区别特征和热水的模式,生态系统结构和功能的主要控制的因素被分析在 eco 地理的元素的地区性的区别上揭示地面模式的效果。结果显示出那:在 LRGR 由地面模式,潮湿,温度和热影响了作为断断续续的纬差别和连续经纱扩展显示出重要分发特征。纵的山和山谷不仅在主要表面材料和精力的转移上有纵贯的走廊功能和散开效果,而且有东方西方障碍功能和堵住的效果。特殊地志的模式在植被风景差异和生态系统结构和功能的空间模式上有重要影响,它是植被风景差异和生态系统的空间分发上的主要控制的因素。小浪变化分析反映环境因素, NDVI 和 NPP 的空间 anisotropy,当小浪一致性分析象与控制度的量的关系一样在 NDVI 和 NPP 的空间分发上揭示控制因素时。在 LRGR 的特殊地面模式是在这个区域的 eco 地理的地区性的区别上的主要影响因素。当在 LRGR 的 eco 地理的地区性的系统的主要典型、特殊空间特征被形成,在 zonality 和 non-zonality 的联合效果下面,有走廊障碍的法律工作。PAN Tao WU Shaohong HE Daming DAI Erfu LIU Yujie 2012Journal of Geographical Sciences2012,22,5:13
4PandaX: a liquid xenon dark matter experiment at CJPL显示文摘PandaX is a large liquid-xenon detector experiment usable for direct dark-matter detection and 136Xe double-beta decay search.The central vessel was designed to accommodate a staged target volume increase from initially 120 kg(stage I)to 0.5 t(stage II)and eventually to a multi-ton scale.The experiment is located in the Jinping Deep-Underground Laboratory in Sichuan,China.The detector operates in dual-phase mode,allowing detection of both prompt scintillation,and ionization charge through proportional scintillation.In this paper a detailed description of the stage I detector design and performance as well as results established during the commissioning phase are presented.CAO XiGuang CHEN Xun CHEN YunHua CUI XiangYi FANG DeQing FU ChangBo GIBONI Karl L. GONG HaoWei GUO GuoDong HE Ming HU Jie HUANG XingTao JI XiangDong JU YongLin LI ShaoLi LIN Qing LIU HuaXuan LIU JiangLai LIU Xiang LORENZON Wolfgang MA YuGang MAO YaJun NI KaiXuan PUSHKIN Kirill REN XiangXiang SCHUBNELL Michael SHEN ManBing SHI YuJie STEPHENSON Scott TAN AnDi TARLé Greg WANG HongWei WANG JiMing WANG Meng WANG XuMing WANG Zhou WEI YueHuan WU ShiYong XIAO MengJiao XIAO Xiang XIE PengWei YE Tao YOU YingHui ZEN XiongHui ZHANG Hua ZHANG Tao ZHAO HaiYing ZHAO Li ZHOU XiaoPeng ZHU ZhongHua 2014Science China(Physics,Mechanics & Astronomy)2014,57,8:9
5Scalable volumetric imaging for ultrahigh-speed brain mapping at synaptic resolution显示文摘The speed of high-resolution optical imaging has been a rate-limiting factor for meso-scale mapping of brain structures and functional circuits,which is of fundamental importance for neuroscience research.Here,we describe a new microscopy method of Volumetric Imaging with Synchronized on-the-fly-scan and Readout(VISo R)for high-throughput,high-quality brain mapping.Combining synchronized scanning beam illumination and oblique imaging over cleared tissue sections in smooth motion,the VISo R system effectively eliminates motion blur to obtain undistorted images.By continuously imaging moving samples without stopping,the system achieves high-speed 3D image acquisition of an entire mouse brain within1.5 hours,at a resolution capable of visualizing synaptic spines.A pipeline is developed for sample preparation,imaging,3D image reconstruction and quantification.Our approach is compatible with immunofluorescence methods,enabling flexible cell-type specific brain mapping and is readily scalable for large biological samples such as primate brains.Using this system,we examined behaviorally relevant whole-brain neuronal activation in 16 c-Fos-sh EGFP mice under resting or forced swimming conditions.Our results indicate the involvement of multiple subcortical areas in stress response.Intriguingly,neuronal activation in these areas exhibits striking individual variability among different animals,suggesting the necessity of sufficient cohort size for such studies.Hao Wang Qingyuan Zhu Lufeng Ding Yan Shen Chao-Yu Yang Fang Xu Chang Shu Yujie Guo Zhiwei Xiong Qinghong Shan Fan Jia Peng Su Qian-Ru Yang Bing Li Yuxiao Cheng Xiaobin He Xi Chen Feng Wu Jiang-Ning Zhou Fuqiang Xu Hua Han Pak-Ming Lau Guo-Qiang Bi 2019National Science Review2019,6,5:7
6Homozygous loss-of-function mutations in FSIP2 cause male infertility with asthenoteratospermia显示文摘Male infertility, as a major issue of human reproduction health, prevents successful natural conception. Asthenoteratospermia mainly presents one or multiple anomalies in head, neck and tail of spermatozoa, and impairs sperm function and motility (Coutton et al., 2015). Recurrent abnormalities of the fibrous sheath lead to multiple morphological abnormaliries of the sperm flagella (MMAF), which is a quite frequent type of asthenoteratospermia in male infertility (Chemes et al., 1987;Ben Khelifa et al, 2014).Wangjie Liu Huan Wu Li Wang Xiaoyu Yang Chunyu Liu Xiaojin He Weiyu Li Jiajia Wang Yujie Chen Hongyan Wang Yang Gao Shuyan Tang Shenmin Yang Li Jin Feng Zhang Yunxi Cao 2019Journal of Genetics and Genomics2019,46,1:7
7Contributions of climate, varieties, and agronomic management to rice yield change in the past three decades in China显示文摘和一个庄稼模拟模型,在四个代表性的 agro 气象学的车站的长期的地实验数据被用来在过去的三十年解开大米收益变化的气候变化,变化更新,和授精管理的贡献。我们发现在 1981-2009 变化期间,更新由 16%-52% 增加了米饭产量,管理改进由产量从 16% ~ 10% 改变了的米饭的气候变化的 0-16% ,和贡献增加了产量。变化更新和气候的否定影响在米饭生产上改变的管理改进偏移量。在主要气候变量之中,在太阳的放射的减少到 0.1%per 年平均减少了米饭产量。温度变化的影响有一个明确的空间模式。它在 Tongcheng 车站在 Xinbin 和 Ganyu 车站并且为迟了的米饭为单个米饭每年由 0.04%-0.4% 增加了产量,由在 Tongcheng 在 Mianyang 车站和早米饭为单个米饭每年由 0.2%-0.4% 对比减少的产量车站。在 1981-2009 期间,米饭变化更新被热要求的增加描绘,谷物数字每尖铁和收获索引。新变化比旧的对气候变化不太敏感。高热的要求,高收益潜力和热的发展和农学的管理的改进,容忍的米饭变化应该被鼓励在未来遇见气候变化和增加的食物需求的挑战。He ZHANG Fulu TAO Dengpan XIAO Wenjiao SHI Fengshan LIU Shuai ZHANG Yujie LIU Meng WANG Huizi BAI 2016Frontiers of Earth Science2016,10,2:5
8Robust YAG:Ce single crystal for ultra-high efficiency laser lighting显示文摘At present,solid-state laser-driven lighting fabricated with blue laser diode(LD)and phosphor has been greatly developed in high-power lighting applications.The major obstacle is the luminescence saturation threshold of the fluorescence conversion material(YAG:Ce).In this work,we successfully prepared a series of high-quality and robust YAG:Ce single crystals.With high quantum efficiency(QE=92%),regular crystal structure and high thermal conductivity,the single-crystal has excellent ability to deal with high radiation flux and thermal accumulation generated by high power.Matching the single-crystal with the laser,the luminous efficiency up to 274 lm/W and saturation threshold of 12 W/mm^(2) were obtained.In addition,the influence of Ce doping concentration and sample processing conditions on the indicators in laser-driven white lighting was systematically studied.The results are of great significance and are believed to promote the development of solid-state laser-driven lighting.Yaqian Zhang Jianming Liu Yujie Zhang Haisheng Yang Yanxia Yu Qingyun He Xiaojuan Liang Yongfu Liu Weidong Xiang 2022Journal of Rare Earths2022,40,5:5
9Distribution and partitioning of heavy metals in large anthropogenically impacted river, the Pearl River, China显示文摘In order to evaluate the distribution and partitioning characteristics of heavy metals in the large anthropogenically impacted Pearl River Basin, the contents of ‘‘anthropophile'' elements(Cr, Ni, Cu, Zn, Cd and Pb,which are clearly influenced by human activities) were determined, and their partitioning coefficients(Kd) between water and sediments and enrichment factors(EF) were calculated for samples collected at different locations along the Pearl River main stream. The modified BCR sequential extraction procedure(proposed by the European Community Bureau of Reference in 1993), which involves the successive extraction of metals in a decreasing order of reactivity, was applied. Sediment samples from the upper,middle, and lower reaches were included in this study. The results showed that the content of most metals in water and sediment samples gradually increases from upstream to downstream, suggesting a possible input from human activities as shown by their increasing high EF, ranged from 1.4 to 3.9 for Cu, from 1.4 to 6.7 for Zn, from 2.5 to59.1 for Cd, and from 1.7 to 8.9 for Pb, respectively. Thehigher partition coefficients(Kd) for Cr, Zn, and Pb(10~5–10~6) indicated that they were mainly transported in solid phase, while parts of Ni, Cu, and Cd were transported in dissolved phase as they display relatively lower Kdin the range of 10~4–10~5. According to the results of the BCR leaching, the percentage of non-residual fraction of heavy metals in the sediments showed a decreasing order of Cd [ Pb [ Zn [ Cu [ Ni [ Cr, implying that Cd and Pb were more active and bioavailable compared to the other four metals, and thus would be potentially more harmful to the watershed ecosystem.Silan Liu Zhongwei Wang Yuanyuan Zhang Yulong Liu Wei Yuan Ting Zhang Yujie Liu Ping Li Li He Jiubin Chen 2019Acta Geochimica2019,38,2:5
10Genome-wide profiling of long noncoding RNA expression patterns and CeRNA analysis in mouse cortical neurons infected with different strains of borna disease virus显示文摘Borna disease virus 1(BoDV-1)is neurotropic prototype of Bornaviruses causing neurological diseases and maintaining persistent infection in brain cells of mammalian species.Long non-coding RNA(lncRNA)is transcript of more than 200 nucleotides without proteincoding function regulating various biological processes as proliferation,apoptosis,cell migration and viral infection.However,regulatory of lncRNAs in BoDV-1 infection remains unknown.To identify differential expression profiles and predict functions of lncRNA in BoDV-1 infection,microarray data showed that 3528 lncRNAs and 2661 lncRNAs were differentially expressed in Strain V and Hu-H1 BoDV-infected groups compared with control groups,respectively.Gene Ontology(GO)and pathway analysis suggested that differential lncRNAs may be involved in regulation of metabolic,biological regulation,cellular process,endocytosis,viral infections and cell adhesion processes,cancer in both BoDV-infected strains.ENSMUST00000128469 was found down-regulated in both BoDV-infected groups compared with control groups consistent with microarray(p<0.05).ceRNA analysis indicated possible interaction networks as ENSMUST00000128469/miR-22-5p,miR-206-3p,miR-302b-5p,miR-302c-3p,miR-1a-3p/Igf1.Igf1 was found up-regulated in both BoDV-infected groups compared with control groups(p<0.05).Possible functions of predicted target mRNAs and miRNAs of ENSMUST00000128469 were involved in cell proliferation,transcriptional misregulation and proteoglycan pathways enriched in cancer.lncRNA may be involved in regulation of Hu-H1 inhibited cell proliferation and promoted apoptosis through NF-kB,JNK/MAPK signaling,BCL2 and CDK6/E2F1 pathways different from Strain V.Possible interaction networks as ENSMUST00000128469/miR-22-5p,miR-206-3p,miR-302b-5p,miR-302c-3p,miR-1a-3p/Igf1 may involve in regulation of cell proliferation,apoptosis,and cancer.Lin Sun Yujie Guo Peng He Xiaoyan Xu Xiong Zhang Haiyang Wang Tian Tang Wei Zhou Ping Xu Peng Xie 2019Genes & Diseases2019,6,2:5
11Small GTPases:Structure,biological function and its interaction with nanoparticles显示文摘Small GTPase is a kind of GTP-binding protein commonly found in eukaryotic cells.It plays an important role in cytoskeletal reorganization,cell polarity,cell cycle progression,gene expression and many other significant events in cells,such as the interaction with foreign particles.Therefore,it is of great scientific significance to understand the biological properties of small GTPases as well as the GTPase-nano interplay,since more and more nanomedicine are supposed to be used in biomedical field.However,there is no review in this aspect.This review summarizes the small GTPases in terms of the structure,biological function and its interaction with nanoparticles.We briefly introduced the various nanoparticles such as gold/silver nanoparticles,SWCNT,polymeric micelles and other nano delivery systems that interacted with different GTPases.These current nanoparticles exhibited different pharmacological effect modes and various target design concepts in the small GTPases study.This will help to elucidate the conclusion that the therapeutic strategy targeting small GTPases might be a new research direction.It is believed that the in-depth study on the functional mechanism of GTPases can provide insights for the design and study of nanomedicines.Siyang Song Wenshu Cong Shurong Zhou Yujie Shi Wenbing Dai Hua Zhang Xueqing Wang Bing He Qiang Zhang 2019Asian Journal of Pharmaceutical Sciences2019,14,1:3
12Safety of endovascular therapy for symptomatic intracranial artery stenosis:a national prospective registry显示文摘Introduction The safety outcomes of endovascular therapy for intracranial artery stenosis in a real-world stetting are largely unknown.The Clinical Registration Trial of Intracranial Stenting for Patients with Symptomatic Intracranial Artery Stenosis(CRTICAS)was a prospective,multicentre,real-world registry designed to assess these outcomes and the impact of centre experience.Methods 1140 severe,symptomatic intracranial arterial stenosis(ICAS)patients treated with endovascular therapy were included from 26 centres,further divided into three groups according to the annual centre volume of intracranial angioplasty and stent placement procedures over 2 years:(1)high volume for≥25 cases/year;(2)moderate volume for 10–25 cases/year and(3)low volume for<10 cases/year.Results The rate of 30-day stroke,transient ischaemic attack or death was 9.7%(111),with 5.4%,21.1%and 9.7%in high-volume,moderate-volume and low-volume centres,respectively(p<0.05).Multivariable logistic regression confirmed high-volume centres had a significantly lower primary endpoint compared with moderate-volume centres(OR=0.187,95%CI:0.056 to 0.627;p≤0.0001),while moderate-volume and low-volume centres showed no significant difference(p=0.8456).Conclusion Compared with the preceding randomised controlled trials,this real-world,prospective,multicentre registry shows a lower complication rate of endovascular treatment for symptomatic ICAS.Non-uniform utilisation in endovascular technology,institutional experience and patient selection in different volumes of centres may have an impact on overall safety of this treatment.Yabing Wang Tao Wang Adam Andrew Dmytriw Kun Yang Liqun Jiao Huaizhang Shi Jie Lu Tianxiao Li Yujie Huang Zhenwei Zhao Wei Wu Jieqing Wan Qinjian Sun Bo Hong Yongli Li Liyong Zhang Jianfeng Chu Qiong Cheng Yiling Cai Pengfei Wang Qi Luo Hua Yang Baijing Dong Yang Zhang Jun Zhao Zuoquan Chen Wei Li Xiaoxin Bai Weiwen He Xueli Cai Maimai Ti Osama O Zaidat 2022Stroke & Vascular Neurology2022,7,2:3
13Overexpression of PITPNM3 promotes hepatocellular carcinoma cell metastasis显示文摘A previous study indicated that C–C chemokine(C–C motif)ligand 18(CCL18)is capable of inducing tumor cell invasion and metastasis by interacting with receptor membrane-associated phosphatidylinositol transfer protein 3(PITPNM3)in breast cancer cells.The present study aims to investigate the correlation between the PITPNM3 expression and metastasis in hepatocellular carcinoma(HCC).Real-time quantitative polymerase chain reaction and Western blot were performed to detect the expression pattern of PITPNM3 in patient samples and HCC cell lines.Wound-healing and transwell chamber assays were performed to assess the migration and invasiveness of HCC cells,and the activation of the signaling protein downstream of PITPNM3 was also detected by Western blot and immunofluorescence.The results revealed that PITPNM3 was upregulated in HCC tissue compared to matched normal liver tissue.Silencing the expression of PITPNM3 by specific siRNAs markedly attenuated the invasive and metastatic abilities of HCC cells,whereas the upregulation of PITPNM3 significantly increased HCC cell mobility.Furthermore,inhibiting the expression of PITPNM3 suppressed the activation of Pyk2,FAK,and Src,while overexpression of PITPNM3enhanced the phosphorylation of FAK and Src in HCC cells.Besides,suppression of Pyk2 can also impair the clustering of integrin.These results imply that PITPNM3 is a vital determinant of HCC migration and invasion.Chonghua He Shicheng Su Fei Chen Di Huang Fang Zheng Wei Huang Jianing Chen Xiuying Cui Qiang Liu Erwei Song Herui Yao Yujie Liu 2014Chinese Science Bulletin2014,59,12:3
14Controllable Biosynthesis and Properties of Gold Nanoplates Using Yeast Extract显示文摘Biosynthesis of gold nanostructures has drawn increasing concerns because of its green and sustainable synthetic process. However, biosynthesis of gold nanoplates is still a challenge because of the expensive source and difficulties of controllable formation of morphology and size. Herein, one-pot biosynthesis of gold nanoplates is proposed, in which cheap yeast was extracted as a green precursor. The morphologies and sizes of the gold nanostructures can be controlled via varying the pH value of the biomedium. In acid condition, gold nanoplates with side length from 1300 ± 200 to 300 ± 100 nm and height from 18 to 15 nm were obtained by increasing the pH value. Whereas, in neutral or basic condition, only gold nanoflowers and nanoparticles were obtained. It was determined that organic molecules, such as succinic acid, lactic acid, malic acid, and glutathione, which are generated in metabolism process, played important role in the reduction of gold ions. Besides, it was found that the gold nanoplates exhibited plasmonic property with prominent dipole infrared resonance in near-infrared region, indicating their potential in surface plasmon-enhanced applications, such as bioimaging and photothermal therapy.Zhi Yang Zhaohui Li Xuxing Lu Fengjiao He Xingzhong Zhu Yujie Ma Rong He Feng Gao Weihai Ni Yasha Yi 2017Nano-Micro Letters2017,9,1:2
15Gossip-Based Resource Location Strategy in Interest Community for P2P Networks显示文摘Resource location strategy has become very popular for mass data distribution in complex and dynamic network. Searching for the objects is a fundamental problem to unstructured Peer to peer(P2P) networks. In this paper, we propose a resource location strategy for user requirements, which employs the collaborative exchange of information between peers to construct interest communities. This strategy can gather similar peers and disseminate useful information among them. Furthermore, we design an algorithm in unstructured P2 P systems named Appropriate degree gossip search algorithm(ADGSA). Using this search algorithm, the performance including search success ratio, recall rate and search response time has been improved dramatically. An efficient resource location system with a fast organization of users cluster based on their requirements can be provided, preventing the creation of unliked communities. The simulation results show that our strategy has better search efficiency, short response time and high recall ratio.HE Ming ZHANG Yujie MENG Xiangwu 2015Chinese Journal of Electronics2015,24,2:2
16Quasi-continuous synthesis of cobalt single atom catalysts for transfer hydrogenation of quinoline显示文摘Improving the transfer hydrogenation of N-heteroarenes is of key importance for various industrial pro-cesses and remains a challenge so far.We reported here a microcapsule-pyrolysis strategy to quasi-continuous synthesis S,N co-doped carbon supported Co single atom catalysts(Co/SNC),which was used for transfer hydrogenation of quinoline with formic acid as the hydrogen donor.Given the unique ge-ometric and electronic properties of the Co single atoms,the excellent catalytic activity,selectivity and stability were observed.Benefiting from the quasi-continuous synthesis method,the as-obtained cata-lysts provide a reference for the large-scale preparation of single atom catalysts without amplification ef-fect.Highly catalytic performances and quasi-continuous preparation process,demonstrating a new and promising approach to rational design of atomically dispersed catalysts with maximum atomic efficiency in industrial.Liyun Huang Hao Zhang Yujie Cheng Qingdi Sun Tao Gan Qian He Xiaohui He Hongbing Ji 2022Chinese Chemical Letters2022,33,5:2
17Reducing energy loss via tuning energy levels of polymer acceptors for efficient all-polymer solar cells显示文摘The open-circuit voltage(Voc) of all-polymer solar cells(all-PSCs) is typically lower than 0.9 V even for the most efficient ones.Large energy loss is the main reason for limiting Voc and efficiency of all-PSCs. Herein, through materials design using electron deficient building blocks based on bithiophene imides, the lowest unoccupied molecular orbital(LUMO) energy levels of polymer acceptors can be effectively tuned, which resulted in a reduced energy loss induced by charge generation and recombination loss due to the suppressed charge-transfer(CT) state absorption. Despite a negligible driving force, all-PSC based on the polymer donor and acceptor combination with well-aligned energy levels exhibited efficient charge transfer and achieved an external quantum efficiency over 70% while maintaining a large Voc of 1.02 V, leading to a 9.21% efficiency. Through various spectroscopy approaches, this work sheds light on the mechanism of energy loss in all-PSCs, which paves an avenue to achieving efficient all-PSCs with large Voc and drives the further development of all-PSCs.Huiliang Sun Bin Liu Jianwei Yu Xianshao Zou Guangye Zhang Yujie Zhang Wei Zhang Mengyao Su Qunping Fan Kun Yang Jianhua Chen He Yan Feng Gao Xugang Guo 2020Science China Chemistry2020,63,12:2
18Reorganization of 3D genome architecture across wild boar and Bama pig adipose tissues显示文摘Background:A growing body of evidence has revealed that the mammalian genome is organized into hierarchical layers that are closely correlated with and may even be causally linked with variations in gene expression.Recent studies have characterized chromatin organization in various porcine tissues and cell types and compared them among species and during the early development of pigs.However,how chromatin organization differs among pig breeds is poorly understood.Results:In this study,we investigated the 3D genome organization and performed transcriptome characterization of two adipose depots(upper layer of backfat[ULB]and greater omentum[GOM])in wild boars and Bama pigs;the latter is a typical indigenous pig in China.We found that over 95%of the A/B compartments and topologically associating domains(TADs)are stable between wild boars and Bama pigs.In contrast,more than 70%of promoterenhancer interactions(PEIs)are dynamic and widespread,involving over a thousand genes.Alterations in chromatin structure are associated with changes in the expression of genes that are involved in widespread biological functions such as basic cellular functions,endocrine function,energy metabolism and the immune response.Approximately 95%and 97%of the genes associated with reorganized A/B compartments and PEIs in the two pig breeds differed between GOM and ULB,respectively.Conclusions:We reported 3D genome organization in adipose depots from different pig breeds.In a comparison of Bama pigs and wild boar,large-scale compartments and TADs were mostly conserved,while fine-scale PEIs were extensively reorganized.The chromatin architecture in these two pig breeds was reorganized in an adipose depotspecific manner.These results contribute to determining the regulatory mechanism of phenotypic differences between Bama pigs and wild boar.Jiaman Zhang Pengliang Liu Mengnan He Yujie Wang Hua Kui Long Jin Diyan Li Mingzhou Li 2022Journal of Animal Science and Biotechnology2022,13,4:2
19Fabrication and photoluminescence of GaN nanowires prepared by ammoniating GaeO3/BN films on Si substrate显示文摘GaN nanowires were successfully pre-pared on Si(111) substrate through ammoniating Ga2O3/BN films deposited by radio frequency mag-netron sputtering system. The synthesized nanowires were confirmed as hexagonal wurtzite GaN by X-ray diffraction, selected-area electron diffraction and Fourier transform infrared spectra. Scanning electron microscopy and transmission electron microscopy revealed that the grown GaN nanowires have a smooth and clean surface with diameters ranging from 40 to 160 nm and lengths typically up to several tens of micrometers. The representative photolumi-nescence spectrum at room temperature exhibited a strong UV light emission band centered at 363 nm and a relative weak purple light emission peak at 422 nm. The growth mechanism is discussed briefly.XUE Chengshan WU Yuxin ZHUANG Huizhao TIAN Deheng LIU Yi'an HE Jianting AI Yujie SUN Lili WANG Fuxue 2006Chinese Science Bulletin2006,51,14:2
20Engineering of dendritic dopant-free hole transport molecules:enabling ultrahigh fill factor in perovskite solar cells with optimized dendron construction显示文摘Developing dopant-free hole-transporting materials(HTMs)for high-performance perovskite solar cells(PVSCs)has been a very active research topic in recent years since HTMs play a critical role in optimizing interfacial charge carrier kinetics and in turn determining device performance.Here,a novel dendritic engineering strategy is first utilized to design HTMs with a D-A type molecular framework,and diphenylamine and/or carbazole is selected as the building block for constructing dendrons.All HTMs show good thermal stability and excellent film morphology,and the key optoelectronic properties could be fine-tuned by varying the dendron structure.Among them,MPA-Cz-BTI and MCz-Cz-BTI exhibit an improved interfacial contact with the perovskite active layer,and non-radiative recombination loss and charge transport loss can be effectively suppressed.Consequently,high power conversion efficiencies(PCEs)of 20.8%and 21.35%are achieved for MPA-Cz-BTI and MCz-Cz-BTI based devices,respectively,accompanied by excellent long-term storage stability.More encouragingly,ultrahigh fill factors of 85.2%and 83.5%are recorded for both devices,which are among the highest values reported to date.This work demonstrates the great potential of dendritic materials as a new type of dopant-free HTMs for high-performance PVSCs with excellent FF.Wei Chen Yang Wang Bin Liu Yajun Gao Ziang Wu Yongqiang Shi Yumin Tang Kun Yang Yujie Zhang Weipeng Sun Xiyuan Feng Frédéric Laquai Han Young Woo Aleksandra B.Djurisic Xugang Guo Zhubing He 2021Science China Chemistry2021,64,1:2
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