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| 1 | MicroRNA changes of bone marrow-derived mesenchymal stem cells differentiated into neuronal-like cells by Schwann cell-conditioned medium显示文摘Bone marrow-derived mesenchymal stem cells differentiate into neurons under the induction of Schwann cells. However, key microRNAs and related pathways for differentiation remain unclear. This study screened and identified differentially expressed microRNAs in bone marrow- derived mesenchymal stem cells induced by Schwann cell-conditioned medium, and explored targets and related pathways involved in their differentiation into neuronal-like cells. Primary bone marrow-derived mesenchymal stem cells were isolated from femoral and tibial bones, while primary Schwann cells were isolated from bilateral saphenous nerves. Bone marrow-derived mesenchymal stem cells were cultured in unconditioned (control group) and Schwann cell-conditioned medium (bone marrow-derived mesenchymal stem cell + Schwann cell group). Neuronal differentiation of bone marrow-derived mesenchymal stem cells induced by Schwann cell-conditioned medium was observed by time-lapse imaging. Upon induction, the morphology of bone marrow-derived mesencaymal stem cells changed into a neural shape with neurites. Results of quantitative reverse transcription-polymerase chain reaction revealed that nestin mRNA expression was upregulated from 1 to 3 days and downregulated from 3 to 7 days in the bone marrow-derived mesenchymal stem cell + Schwann cell group. Compared with the control group, microtubule-associated protein 2 mRNA expression gradually increased from 1 to 7 days in the bone marrow-derived mesenchymal stem cell + Schwann cell group. After 7 days of induction, microRNA analysis iden:ified 83 significantly differentially expressed microRNAs between the two groups. Gene Ontology analysis indicated enrichment of microRNA target genes for neuronal projection development, regulation of axonogenesis, and positive regulation of cell proliferation. Kyoto Encyclopedia of Genes and Genomes pathway analysis demonstrated that Hippo, Wnt, transforming growth factor-beta, and Hedgehog signaling pathv/ays were potentially associated with neural differentiation of bone marrow-derived mesenchymal stem cells. This study, which carried out successful microRNA analysis of neuronal-like cells differentiated from bone marrow-derived mesenchymal stem cells by Schwann cell induction, revealed key microRNAs and pathways involved in neural differentiation of bone marrow-derived mesenchymal stem cells. All protocols were approved by the Animal Ethics Committee of Institute of Radiation Medicine, Chinese Academy of Medical Sciences on March 12, 2017 (approval number: DWLI-20170311). | Zhi-Jian Wei Bao-You Fan Yang Liu Han Ding Hao-Shuai Tang Da-Yu Pan Jia-Xiao Shi Peng-Yuan Zheng Hong-Yu Shi Heng Wu Ang Li Shi-Qing Feng | 2019 | Neural Regeneration Research2019,14,8: | 13 |
| 2 | Morinda officinalis oligosaccharides increase serotonin in the brain and ameliorate depression via promoting 5-hydroxytryptophan production in the gut microbiota显示文摘Morinda officinalis oligosaccharides(MOO) are an oral drug approved in China for the treatment of depression in China. However, MOO is hardly absorbed so that their anti-depressant mechanism has not been elucidated. Here, we show that oral MOO acted on tryptophan → 5-hydroxytryptophan(5-HTP) → serotonin(5-HT) metabolic pathway in the gut microbiota. MOO could increase tryptophan hydroxylase levels in the gut microbiota which accelerated 5-HTP production from tryptophan;meanwhile, MOO inhibited 5-hydroxytryptophan decarboxylase activity, thus reduced 5-HT generation,and accumulated 5-HTP. The raised 5-HTP from the gut microbiota was absorbed to the blood, and then passed across the blood-brain barrier to improve 5-HT levels in the brain. Additionally, pentasaccharide,as one of the main components in MOO, exerted the significant anti-depressant effect through a mechanism identical to that of MOO. This study reveals for the first time that MOO can alleviate depression via increasing 5-HTP in the gut microbiota. | Zheng-Wei Zhang Chun-Sheng Gao Heng Zhang Jian Yang Ya-Ping Wang Li-Bin Pan Hang Yu Chi-Yu He Hai-Bin Luo Zhen-Xiong Zhao Xin-Bo Zhou Yu-Li Wang Jie Fu Pei Han Yu-Hui Dong Gang Wang Song Li Yan Wang Jian-Dong Jiang Wu Zhong | 2022 | Acta Pharmaceutica Sinica B2022,12,8: | 12 |
| 3 | Effects of Dandelion Extract on the Proliferation of Rat Skeletal Muscle Cells and the Inhibition of a Lipopolysaccharide-lnduced Inflammatory Reaction显示文摘 | Qiang Liu Heng Zhao Yue Gao Yan Meng Xiang-Xuan Zhao Shi-Nong Pan | 2018 | Chinese Medical Journal2018,,14: | 10 |
| 4 | An intracellular toxic protein (Xin) isolated from Xenorhabdus nematophilus strain BJ显示文摘An intracellular toxic protein, designated Xin and with remarkable inhibitory effect on growth of Helicoverpa armigera, was isolated from X. Nematophilus strain BJ by ion exchange chromatography and hydrophobic interaction chromatography. After placing neonates on the artificial diet containing Xin at concentration of 0 or 3.48μg/g for 7 days, the average weight of insects was 23.50mg and 0.55mg, respectively. The activity of Xin was lost by heating, freeze-drying, digestion with proteases or urea. The Xin molecular weight, over kD, was determined by gel filtration on Superose 12, and there were six component proteins analyzed by SDS-PAGE. The results show that Xin is a high molecular protein complex inhibiting growth of insect pest. | PAN Yinghong , JIAN Heng , ZHANG Jie , LIU Zheng, CHEN Zhongyi , YANG Xiufen, YANG Huaiwen and HUANG Dafang( State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China Institute of Biocontrol Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China Institute of Biotechnology Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China.) | 2002 | Progress in Natural Science:Materials International2002,12,4: | 9 |
| 5 | Natural selection maintains the transcribed LTR retrotransposons in Nosema bombycis显示文摘Eight intact LTR retrotransposons(Nbr1?Nbr8)have been previously characterized from the genome of Nosema bombycis,a eu-karyotic parasite with a compact and reduced genome.Here we describe six novel transcribed Nbr elements(Nbr9?Nbr14)identified through either cDNA library or RT-PCR.Like previously determined ones,all of them belong to the Ty3/Gypsy superfamily.Retrotransposon diversity and incomplete domains with insertions(Nbr12),deletions(Nbr11)and in-frame stop codons in coding regions(Nbr9)were detected,suggesting that both defective and loss events of LTR retrotransposon have happened in N.bombycis genome.Analysis of selection showed that strong purifying selection acts on all elements except Nbr11.This implies that selective pressure keeps both these Nbrs and their functions in genome.Interestingly,Nbr11 is under positive selection and some positively selected codons were identified,indicating that new functionality might have evolved in the Nbr11 retrotransposon.Unlike other transposable elements,Nbr11 has integrated into a conserved syntenic block and probably resulted in the inversion of both flanking regions.This demonstrates that transposable element is an important factor for the reshuffling and evolution of their host genomes,and may be maintained under natural selection. | Heng Xiang Guoqing Pan Ruizhi Zhang Jinshan Xu Tian Li Wenle Li Zeyang Zhou Zhonghuai Xiang | 2010 | Journal of Genetics and Genomics2010,37,5: | 7 |
| 6 | Efficient catalytic conversion of carbohydrates into 5-ethoxymethylfurfural over MIL-101-based sulfated porous coordination polymers显示文摘In this work, a series of MIL-101-SO3H(x) polymeric materials were prepared and further used for the first time as efficient heterogeneous catalysts for the conversion of fructose-based carbohydrates into 5-ethoxymethylfurfural(EMF) in a renewable mixed solvent system consisting of ethanol and tetrahydrofuran(THF). The influence of –SO3H content on the acidity as well as on the catalytic activity of the porous coordination polymers in EMF production was also studied. High EMF yields of 67.7% and 54.2% could be successively obtained from fructose and inulin in the presence of MIL-101-SO_3H(100) at 130 °C for 15 h.The catalyst could be reused for five times without significant loss of its activity and the recovery process was facile and simple. This work provides a new platform by application of porous coordination polymers(PCPs) for the production of the potential liquid fuel molecule EMF from biomass in a sustainable solvent system. | Xiaofang Liu Hu Li Hu Pan Heng Zhang Shan Huang Kaili Yang Wei Xue Song Yang | 2016 | Journal of Energy Chemistry2016,25,3: | 6 |
| 7 | A pair of transposon-derived proteins function in a histone acetyltransferase complex for active DNA demethylation显示文摘Transposons 被 epigenetic 机制通常包括 DNA methylation 使沉默。这里,我们识别了一双先驱导出 transposon 的蛋白质(HDP ) , HDP1 和 HDP2,在 Arabidopsis 的反沉默因素。hdp1 和 hdp2 异种显示了 transgenes 和某 transposons 的提高的 silencing。种系发生的分析表明 HDP1 和 HDP2 分别地从先驱编码 transposon 的 transposase 和 DNA 有约束力的蛋白质被共同驯养。HDP1 在原子核与 HDP2 交往,类似于他们的 transposon 对应物。而且, HDP1 和 HDP2 与组成在 DNA demethylation 工作的 histone acetyltransferase 建筑群的 IDM1, IDM2, IDM3 和 MBD7 被联系。HDP2 和 methyl-DNA-binding 蛋白质 MBD7 分享普通 genomic 绑定地点的一个大集合,显示他们联合决定 histone acetyltransferase 建筑群的目标特性。因此,我们的数据表明 HDP1 和 HDP2 组成被招募了到 histone acetyltransferase 建筑群阻止 DNA hypermethylation 和 epigenetic silencing 的一个功能的模块。 | Cheng-Guo Duan Xingang Wang Shaojun Xie Li Pan Daisuke Miki Kai Tang Chuan-Chih Hsu Mingguang Lei Yingli Zhong Yueh-Ju Hou ZhijuanWang Zhengjing Zhang Satendra K Mangrauthia Huawei Xu Heng Zhang Brian Dilkes W Andy Tao Jian-Kang Zhu | 2017 | Cell Research2017,27,2: | 6 |
| 8 | PAQR10 and PAQR11 mediate Ras signaling in the Golgi apparatus显示文摘地岬在许多细胞的活动起一个枢轴的作用,并且它的 subcellular 区分提供空间、时间的选择。这里,我们报导由二高度相应的蛋白质 PAQR10 和孕激素和 AdipoQ 受体家庭的 PAQR11 在 Golgi 仪器发信号的地岬的空间规定的一个模式。PAQR10 和 PAQR11 在 Golgi 仪器是只局部性的。PAQR10/PAQR11 的 Overexpression 刺激基础、导致 EGF 的英皇家空军之阶级最低之兵 phosphorylation 并且以一种剂量依赖者方式增加英皇家空军之阶级最低之兵目标基因的表示。PAQR10/PAQR11 的 Overexpression 显著地提高 HRas, NRas 和 KRas4A 的 Golgi 本地化,然而并非 KRas4B。PAQR10 和 PAQR11 罐头也与 HRas, NRas 和 KRas4A 交往,然而并非 KRas4B。在由 PAQR10/PAQR11 的 overexpression 的 Golgi 仪器的增加的地岬蛋白质处于一个活跃状态。一致地, PAQR10 和 PAQR11 还原剂击倒在 Golgi 仪器的刺激 EGF 的英皇家空军之阶级最低之兵 phosphorylation 和地岬激活。有趣地, PAQR10 和 PAQR11 能与 RasGRP1,地岬的 guanine 核苷酸交换蛋白质,和 RasGRP1 的增加 Golgi 本地化交往。RasGRP1 的 C1 领域为和 PAQR10/PAQR11 的 RasGRP1 的相互作用必要、足够。由 overexpressed PAQR10/PAQR11 的英皇家空军之阶级最低之兵 phosphorylation 的模拟被 RasGRP1 的 downregulation 废除。而且, PC12 房间的区别被 PAQR10/PAQR11 的 overexpression 显著地提高。一起,这研究揭开由 PAQR10 和 PAQR11 在 Golgi 仪器发信号的地岬的空间规定的一个新范例。 | Ting Jin Qiurong Ding Heng Huang Daqian Xu Yuhui Jiang Ben Zhou Zhenghu Li Xiaomeng Jiang Jing He Weizhong Liu Yixuan Zhang Yi Pan Zhenzhen Wang Walter G Thomas Yan Chen | 2012 | Cell Research2012,22,4: | 6 |
| 9 | Changes in energy metabolism in the quadriceps femoris after a single bout of acute exhaustive swimming in rats: a 31p-magnetic resonance spectroscopy study显示文摘 | Sun Yingwei Pan Shinong Chen Zhian Zhao Heng Ma Ying Zheng Liqiang Li Qi Deng Chunbo Fu Xihu Lu Zaiming Guo Qiyong | 2014 | Chinese Medical Journal2014,,5: | 5 |
| 10 | Effects of elevated atmospheric CO_2 concentration and temperature on the soil profile methane distribution and diffusion in rice–wheat rotation system显示文摘The aim of this experiment was to determine the impacts of climate change on soil profile concentrations and diffusion effluxes of methane in a rice–wheat annual rotation ecosystem in Southeastern China. We initiated a field experiment with four treatments:ambient conditions(CKs), CO_2 concentration elevated to ~ 500 μmol/mol(FACE),temperature elevated by ca. 2°C(T) and combined elevation of CO_2 concentration and temperature(FACE + T). A multilevel sampling probe was designed to collect the soil gas at four different depths, namely, 7 cm, 15 cm, 30 cm and 50 cm. Methane concentrations were higher during the rice season and decreased with depth, while lower during the wheat season and increased with depth. Compared to CK, mean methane concentration was increased by 42%, 57% and 71% under the FACE, FACE + T and T treatments, respectively, at the 7 cm depth during the rice season(p < 0.05). Mean methane diffusion effluxes to the 7 cm depth were positive in the rice season and negative in the wheat season, resulting in the paddy field being a source and weak sink, respectively. Moreover, mean methane diffusion effluxes in the rice season were 0.94, 1.19 and 1.42 mg C/(m^2·hr) in the FACE,FACE + T and T treatments, respectively, being clearly higher than that in the CK. The results indicated that elevated atmospheric CO_2 concentration and temperature could significantly increase soil profile methane concentrations and their effluxes from a rice–wheat field annual rotation ecosystem(p < 0.05). | Bo Yang Zhaozhi Chen Man Zhang Heng Zhang Xuhui Zhang Genxing Pan Jianwen Zou Zhengqin Xiong | 2015 | Journal of Environmental Sciences2015,27,6: | 5 |
| 11 | Curcumin inhibits the replication of enterovirus 71 in vitro显示文摘Human enterovirus 71(EV71)is the main causative pathogen of hand,foot,and mouth disease(HFMD)in children.The epidemic of HFMD has been a public health problem in Asia-Pacific region for decades,and no vaccine and effective antiviral medicine are available.Curcumin has been used as a traditional medicine for centuries to treat a diversity of disorders including viral infections.In this study,we demonstrated that curcumin showed potent antiviral effect again EV71.In Vero cells infected with EV71,the addition of curcumin significantly suppressed the synthesis of viral RNA,the expression of viral protein,and the overall production of viral progeny.Similar with the previous reports,curcumin reduced the production of ROS induced by viral infection.However,the antioxidant property of curcumin did not contribute to its antiviral activity,since N-acetyl-L-cysteine,the potent antioxidant failed to suppress viral replication.This study also showed that extracellular signal-regulated kinase(ERK)was activated by either viral infection or curcumin treatment,but the activated ERK did not interfere with the antiviral effect of curcumin,indicating ERK is not involved in the antiviral mechanism of curcumin.Unlike the previous reports that curcumin inhibited protein degradation through ubiquitin–proteasome system(UPS),we found that curcumin had no impact on UPS in control cells.However,curcumin did reduce the activity of proteasomes which was increased by viral infection.In addition,the accumulation of the short-lived proteins,p53 and p21,was increased by the treatment of curcumin in EV71-infected cells.We further probed the antiviral mechanism of curcumin by examining the expression of GBF1 and PI4KB,both of which are required for the formation of viral replication complex.We found that curcumin significantly reduced the level of both proteins.Moreover,the decreased expression of either GBF1 or PI4KB by the application of siRNAs was sufficient to suppress viral replication.We also demonstrated that curcumin showed anti-apoptotic activity at the early stage of viral infection.The results of this study provide solid evidence that curcumin has potent anti-EV71 activity.Whether or not the down-regulated GBF1 and PI4KB by curcumin contribute to its antiviral effect needs further studies. | Ying Qin Lexun Lin Yang Chen Shuo Wu Xiaoning Si Heng Wu Xia Zhai Yan Wang Lei Tong Bo Pan Xiaoyan Zhong Tianying Wang Wenran Zhao Zhaohua Zhong | 2014 | Acta Pharmaceutica Sinica B2014,4,4: | 5 |
| 12 | Association of the Common Genetic Variant Upstream of INSIG2 Gene with Obesity Related Phenotypes in Chinese Children and Adolescents显示文摘Objective To study the association between the rs7566605 variant of INSIG2 and obesity-related phenotypes in Chinese children and adolescents. Methods The study sample consisted of two independent cohorts of Chinese children and adolescents. Anthropometric indices, lipids, blood pressure, fasting glucose, insulin and percentage of fat mass were determined. PCR with restriction fragment length polymorphism analysis was performed for genotyping the rs7566605 variant. Results In each of the two independent cohorts, no significant association was observed between rs7566605 and obesity under additive, dominant or recessive model. We also did not detect any difference in the genotype frequency between all the obese children and controls. Furthermore, we did not find evidence of an association between body composition indices and metabolic phenotypes in all children. However, the triglyceride level of CC homozygotes was significantly higher than that of GG+GC genotypes in obese children (P=0.022). Additionally, we observed a non-significant trend of severe obesity in a post-hoc test. Conclusion INSIG2 rs7566605 variant is not associated Chinese childhood obesity in two independent cohorts. Further study is needed to verify the effect of rs7566605 on triglyceride in obese children. | HAI-JUN WANG HENG ZHANG SHI-WEI ZHANG YONG-PING PAN JUN MA | 2008 | Biomedical and Environmental Sciences2008,21,6: | 4 |
| 13 | Traffic emission and its impact on air quality in Guangzhou area显示文摘A comprehensive field measurement was set up in Guangzhou City of China and the key was placed on NO\-x and O\-3 pollution. The results indicated that the average driving speed of vehicle was only 14 km/h in downtown with high frequency of idle and acceleration. Upward fluxes of CO and NO were observed in Dongfeng Street. NO\-x annual mean concentration in urban area increased year by year, and NO\-x was identified as the most important pollutant since 1995. Photochemical smog pollution was serious in general, spatial and seasonal distribution of O\-3 was observed. O\-3 concentration was kept in a high level in autumn, and its formation was restrained in summer due to frequent thunderstorm and high humidity. The numerical simulation showed the average concentration and maximum concentration of O\-3 would increase 60%—100% if vehicular emission increased 100% in Guangzhou. | Zhang Yuan\|hang, Xie Shao\|dong, Zeng Li\|min, Wang Hui\|xiang Laboratory of Atmospheric Environmental Simulation, ESPC, Center of Environmental Sciences, Peking University, Beijing 100871, China Yu Kai\|heng, Zhu Chang\|jian, Pan Nan\|ming, Wang | 1999 | Journal of Environmental Sciences1999,11,3: | 3 |
| 14 | 老年人与交通事故的调查分析(英文)显示文摘目的中国目前正在经历老年人口与交通车辆的同时快速增长。随着人口的老龄化加剧以及社会的发展,老年驾驶者人数将预期明显增加。国际上对老年人交通安全的经验可能对中国即将增加的老年驾驶者有借鉴作用。方法检索并分析了中国以及一些发达国家,如美国等有关老年驾驶者以及交通事故安全的论文及论著。结果尽管老年人较少开车且普遍地使用安全带,但他们交通事故发生数以及死亡率较其他年龄组高。老年人视觉以及感知功能的损害也增加了发生交通事故的危险性,同时也产生了其独特的事故形式。与年轻人相比,在相同的受伤程度下,老年人体格上的衰退和疾病因素可能对会产生更坏的结果。虽然老年驾驶者在中国还是少数,与其他年龄组相比,老年人有较高的交通事故伤害率、步行者死亡率和较高的农村老年人受害率。结论国际上对老年人交通安全的经验,比如更好的道路安全设计,高可视安全标识和安全带法律的实施,安全带使用的公共教育,以及老年驾驶证的更新等对中国的交通安全设计者以及法律的制定者可能会有帮助。这些经验对损伤预防研究者在老年人交通事故危险因素的识别方面,以及对工程师在驾驶环境和车辆设计等方面也有着重要的意义。 | HENG Kenneth PAN Shuming LAYDE M Peter ZHU Shankuan | 2006 | 中华急诊医学杂志2006,15,1: | 3 |
| 15 | Assessment of structural brain changes in patients with type 2 diabetes mellitus using the MRI-based brain atrophy and lesion index显示文摘Patients with type 2 diabetes mellitus(T2 DM) often have cognitive impairment and structural brain abnormalities.The magnetic resonance imaging(MRI)-based brain atrophy and lesion index can be used to evaluate common brain changes and their correlation with cognitive function,and can therefore also be used to reflect whole-brain structural changes related to T2 DM.A total of 136 participants(64 men and 72 women,aged 55–86 years) were recruited for our study between January 2014 and December 2016.All participants underwent MRI and Mini-Mental State Examination assessment(including 42 healthy control,38 T2 DM without cognitive impairment,26 with cognitive impairment but without T2 DM,and 30 T2 DM with cognitive impairment participants).The total and sub-category brain atrophy and lesion index scores in patients with T2 DM with cognitive impairment were higher than those in healthy controls.Differences in the brain atrophy and lesion index of gray matter lesions and subcortical dilated perivascular spaces were found between non-T2 DM patients with cognitive impairment and patients with T2 DM and cognitive impairment.After adjusting for age,the brain atrophy and lesion index retained its capacity to identify patients with T2 DM with cognitive impairment.These findings suggest that the brain atrophy and lesion index,based on T1-weighted and T2-weighted imaging,is of clinical value for identifying patients with T2 DM and cognitive impairment.Gray matter lesions and subcortical dilated perivascular spaces may be potential diagnostic markers of T2 DM that is complicated by cognitive impairment.This study was approved by the Medical Ethics Committee of University of South China(approval No.USC20131109003) on November 9,2013,and was retrospectively registered with the Chinese Clinical Trial Registry(registration No.Chi CTR1900024150) on June 27,2019. | Heng Zhao Fang Wang Guang-Hua Luo Hao Lei Fei Peng Qiu-Ping Ren Wei Chen Yan-Fang Wu Li-Chun Yin Jin-Cai Liu Shi-Nong Pan | 2022 | Neural Regeneration Research2022,17,3: | 3 |
| 16 | Polymorphisms of potential drug resistant molecular markers in Plasmodium vivax from China-Myanmar border during 2008-2017显示文摘Background:Plasmodium vivax remains the predominant species at the China–Myanmar border,imposing a major challenge to the recent gains in regional malaria elimination.To closely supervise the emerging of drug resistance in this area,we surveyed the variations in genes potentially correlated with drug resistance in P.vivax parasite and the possible drug selection with time.Methods:A total of 235 P.vivax samples were collected from patients sufering uncomplicated malaria at Yingjiang,Tengchong,and Longling counties,and Nabang port in China,Yunnan province,and Laiza sub-township in Myanmar,from 2008 to 2017.Five potential drug resistance genes were amplifed utilizing nested-PCR and analyzed,including pvdhfr,pvdhps,pvmdr1,pvcrt-o,and pvk12.The Pearson’s Chi-squared test or Fisher’s exact test were applied to determine the statistical frequency diferences of mutations between categorical data.Results:The pvdhfr F57I/L,S58R,T61M and S117T/N presented in 40.6%,56.7%,40.1%,and 56.0% of the sequenced P.vivax isolates,and these mutations signifcantly decreased with years.The haplotype formed by these quadruple mutations predominated in Yingjiang,Tengchong,Longling and Nabang.While a mutation H99S/R(56.6%)dominated in Laiza and increased with time.In pvdhps,the A383G prevailed in 69.2% of the samples,which remained the most prevalent haplotype.However,a signifcant decrease of its occurrence was also noticed over the time.The S382A/C and A553G existed in 8.4% and 30.8% of the isolates,respectively.In pvmdr1,the mutation Y976F occurred at a low frequency in 5/232(2.2%),while T958M was fxed and F1076L was approaching fxed(72.4%).The K10 insertion was detected at an occurrence of 33.2% in pvcrt-o,whereas there was no signifcant diference among the sites or over the time.No mutation was identifed in pvk12.Conclusions:Mutations related with resistance to antifolate drugs are prevalent in this area,while their frequencies decrease signifcantly with time,suggestive of increased susceptibility of P.vivax parasite to antifolate drugs.Resistance to chloroquine(CQ)is possibly emerging.However,since the molecular mechanisms underneath CQ resistance is yet to be better understood,close supervision of clinical drug efciency and continuous function investigation is urgently needed to alarm drug resistance. | Zhensheng Wang Chunyan Wei Yunchun Pan Zhihua Wang Xin Ji Qianqian Chen Lianhui Zhang Zenglei Wang Heng Wang | 2022 | Infectious Diseases of Poverty2022,11,2: | 2 |
| 17 | Impacts of human interventions on the seasonal and nodal dynamics of the M_(2)and K_(1)tidal constituents in Lingdingyang Bay of the Zhujiang River Delta,China显示文摘Natural and human-induced changes may exert considerable impacts on the seasonal and nodal dynamics of M2 and K1 tidal constituents.Therefore,quantifying the influences of these factors on tidal regime changes is essential for sustainable water resources management in coastal environments.In this study,the enhanced harmonic analysis was applied to extract the seasonal variability of the M2 and K1 tidal amplitudes and phases at three gauging stations along Lingdingyang Bay of the Zhujiang River Delta.The seasonal dynamics in terms of tidal wave celerity and amplification/damping rate were used to quantify the impacts of human-induced estuarine morphological alterations on M2 and K1 tidal hydrodynamics in inner and outer Lingdingyang Bay.The results show that both tidal amplification/damping rate and wave celerity were considerably increased from the pre-anthropogenic activity period(Pre-AAP)to the post-anthropogenic activity period(Post-AAP)excepting the tidal amplification/damping rate in outer Lingdingyang Bay,and the variations in outer Lingdingyang Bay was larger than those in inner Lingdingyang Bay.The alterations in these two parameters were more significant in flood season than in dry season in both inner and outer Lingdingyang Bay.The seasonal variability of M2 and K1 tidal amplitudes were further quantified using a regression model accounting for the 18.61-year lunar nodal modulation,where this study observes a considerable alteration in M2 constituent owing to human interventions.During the Post-AAP,the M2 amplitudes at the downstream station were larger than those that would have occurred in the absence of strong human interventions,whereas the opposite was true for the upstream station,leading to a substantial decrease in tidal amplification in outer Lingdingyang Bay.However,it is opposite in inner Lingdingyang Bay.The underlying mechanism can be primarily attributed to channel deepening and narrowing caused by human interventions,that resulted in substantial enlargement of the bay volume and reduced the effective bottom friction,leading to faster wave celerity and stronger amplified waves. | Ping Zhang Qingshu Yang Haidong Pan Heng Wang Meifang Xie Huayang Cai Nanyang Chu Liangwen Jia | 2021 | Acta Oceanologica Sinica2021,40,10: | 2 |
| 18 | Aerosol printing and photonic sintering of bioresorbable zinc nanoparticle ink for transient electronics manufacturing显示文摘Bioresorbable electronics technology can potentially lead to revolutionary applications in healthcare, consumer electronics, and data security. This technology has been demonstrated by various functional devices. However, majority of these devices are realized by CMOS fabrication approaches involving complex and time-consuming processes that are high in cost and low in yield. Printing electronics technology represents a series of printing and post processing techniques that hold promise to make high performance bioresorbable electronics devices. But investigation of printing approaches for bioresorbable electronics is very limited. Here we demonstrate fabrication of conductive bioresorbable patterns using aerosol printing and photonic sintering approaches. Experimental results and simulation reveals that ink compositions, photonic energy, film thickness, and ventilation conditions may influence the effect of photonic sintering. A maximum conductivity of 22321.3 S/m can be achieved using 1 flash with energy of 25.88 J/cm^2 with duration of 2 ms. By combining two cascaded sintering procedures using flash light and laser further improve the conductivity to 34722.2 S/m. The results indicate that aerosol printing and photonic sintering can potentially yield mass fabrication of bioresorbable electronics, leading to prevalence of printable bioresorbable technology in consumer electronics and biomedical devices. | Bikram Kishore MAHAJAN BrANDon LUDWIG Wan SHOU Xiaowei YU Emmanuel FREGENE Hang XU Heng PAN Xian HUANG | 2018 | Science China(Information Sciences)2018,61,6: | 2 |
| 19 | Role of MXene surface terminations in electrochemical energy storage:A review显示文摘MXenes are a group of recently discovered 2D materials and have attracted extensive attention since their first report in 2011;they have shown excellent prospects for energy storage applications owing to their unique layered microstructure and tunable electrical properties.One major feature of MXenes is their tailorable surface terminations(e.g.,-F,-O,-OH).Numerous studies have indicated that the composition of the surface terminations can significantly impact the electrochemical properties of MXenes.Nonetheless,the underlying mechanisms are still poorly understood,mainly because of the difficulties in quantitative analysis and characterization.This review summarizes the latest research progress on MXene terminations.First,a systematic introduction to the approaches for preparing MXenes is presented,which generally dominates the surface terminations.Then,theoretical and experimental efforts regarding the surface terminations are discussed,and the influence of surface terminations on the electronic and electrochemical properties of MXenes are generalized.Finally,we present the significance and research prospects of MXene terminations.We expect this review to encourage research on MXenes and provide guidance for usingthese materials for batteries and supercapacitors. | Zhuoheng Bao Chengjie Lu Xin Cao Peigen Zhang Li Yang Heng Zhang Dawei Sha Wei He Wei Zhang Long Pan Zhengming Sun | 2021 | Chinese Chemical Letters2021,32,9: | 2 |
| 20 | High Throughput Satellite System Capacity Analysis and Application Forecast显示文摘With the development of large numbers broadband Internet access,global satellite communications is moving towards High Throughput Satellites(HTS).Now,USA,Canada,Europe,Thailand,Japan,United Arab Emirates,Australia have already developed HTS systems.However,there is little research to analyze the factors influencing high throughput.Thus,from the design perspective,the throughput of HTS and influencing factors are calculated and compared at a system level.Finally,the application of HTS is analyzed and forecasted. | DENG Heng PENG Fei YUAN Jun SHEN Yufei Pan Ji | 2016 | Aerospace China2016,17,4: | 2 |