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Science China Chemistry 2011年第6期54卷 930-935页

作者： HALPeRT Jonathan e State key Laboratory of Multi-phase Complex Systems Institute of Process engineering Chinese Academy of Sciences

Hierarchically ordered macro-mesoporous TiO2 films (Ti-Ma-me) were fabricated on fluorine-doped tin oxide (FTO) substrates through the confinement self-assembly method. The prepared Ti-Ma-me possesses periodically ordered structure and a large specific surface area, which was applied as an interfacial layer between the nanocrystalline TiO2 film (P25-TiO2) and FTO electrode in the dye-sensitized solar cell (DSSC). The introduction of a Ti-Ma-me interfacial layer increased the shortcircuit current density (Jsc) from 7.49 to 10.65 mA/cm2 and the open-circuit voltage (Voc) from 0.65 to 0.70 V as the result of its improved light harvesting efficiency by allowing for the high roughness factor and enhanced multiple internal reflection or scattering as well as reducing the back-transport reaction by blocking direct contact between the electrolyte and FTO electrode. Therefore, the photovoltaic conversion efficiency (η) was improved by 83% from 3.04% to 5.55%, as compared to a device using a bare P25 TiO2 photoanode.

关键词： dye-sensitized solar cells hierarchical ordered macro-mesoporous photoanode

Dependency-aware unequal erasure protection codes

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Journal of Zhejiang University-Science A(Applied Physics & engineering) 2006年第z1期7卷 27-33页

作者： BOUABDALLAH Amine LACAN Jérme Laboratory for Analysis and Architecture of Systems Toulouse 31077 France Applied Mathematics and Computer Science DepartmentENSICAToulouse 31056France Telecommunications for Space and AeronauticToulouse 31000France

Classical unequal erasure protection schemes split data to be protected into classes which are encoded independently. The unequal protection scheme presented in this paper is based on an erasure code which encodes all the data together according to the existing dependencies. A simple algorithm generates dynamically the generator matrix of the erasure code according to the packets streams structure, i.e., the dependencies between the packets, and the rate of the code. This proposed erasure code was applied to a packetized MPeG4 stream transmitted over a packet erasure channel and compared with other classical protection schemes in terms of PSNR and MOS. It is shown that the proposed code allows keeping a high video quality-level in a larger packet loss rate range than the other protection schemes.

关键词： Data dependencies integration Unequal erasure protection (UeP) Lossy networks Reliable video transmissions MPeG4 video codec

rHBsAg 结合载脂蛋白 H 的机理研究

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中华微生物学和免疫学杂志 1997年第3期17卷 160-163页

作者：杨旭 Peep.,me 湖南医科大学附二院肝病研究中心

用酶免疫测定、配体印迹、酶水解、化学修饰等方法研究ｒＨＢｓＡｇ结合ａｐｏＨ的机理。实验结果表明，ｒＨＢｓＡｇ结合ａｐｏＨ是不依赖于Ｃａ＋＋、Ｍｇ＋＋等二价阳离子的，其最适ｐＨ在６．５～８．０。切除ａｐｏＨ上的神经氨酸... 详细信息

用酶免疫测定、配体印迹、酶水解、化学修饰等方法研究ｒＨＢｓＡｇ结合ａｐｏＨ的机理。实验结果表明，ｒＨＢｓＡｇ结合ａｐｏＨ是不依赖于Ｃａ＋＋、Ｍｇ＋＋等二价阳离子的，其最适ｐＨ在６．５～８．０。切除ａｐｏＨ上的神经氨酸和Ｎ－糖苷键，ａｐｏＨ结合力无变化，说明糖基不是ａｐｏＨ结合ｒＨＢｓＡｇ所必需的。化学修饰ａｐｏＨ的精氨酸残基对ａｐｏＨ的结合力无影响。然而，修饰其中几个赖氨酸残基即可减弱直至完全破坏ａｐｏＨ的结合力，说明赖氨酸残基与ａｐｏＨ结合ｒＨＢｓＡｇ有关。由于ａｐｏＨ与脂蛋白，特别是ＣＭ和ＨＤＬ结合，ＨＢＶ有可能通过ａｐｏＨ，结合ＣＭ、ＨＤＬ等，在脂蛋白代谢过程中进入肝细胞。

关键词：受体载脂蛋白H 乙型肝炎表面抗原

Urinary nuclear magnetic resonance spectroscopy of a Bangladeshi cohort with hepatitis-B hepatocellular carcinoma: A biomarker corroboration study

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World Journal of Gastroenterology 2016年第16期22卷 4191-4200页

作者： I Jane Cox Abil e Aliev Mary me Crossey Mahvish Dawood Mamun Al-Mahtab Sheikh M Akbar Salimur Rahman Antonio Riva Roger Williams Simon D Taylor-Robinson Institute of Hepatology London Foundation for Liver Research Department of Chemistry University College London Division of Digestive Diseases Department of Surgery and Cancer Imperial College London Department of Hepatology Bangabandhu Sheikh Mujib Medical University Department of medical Sciences Toshiba General Hospital

AIM: To establish if a distinct urinary metabolic profile could be identified in Bangladeshi hepatitis-B hepatocellular carcinoma (HCC) patients compared to cirrhosis patients and ***: Urine samples from 42 Bangladeshi patients with HCC (39 patients with hepatitis-B HCC), 47 with cirrhosis on a background of hepatitis B, 46 with chronic hepatitis B, and seven ethnically-matched healthy controls were analyzed using nuclear magnetic resonance (NMR) spectroscopy. A full dietary and medication history was recorded for each subject. The urinary NMR data were analyzed using principal component analysis (PCA) and orthogonal partial least squared discriminant analysis (OPLS-DA) techniques. Differences in relative signal levels of the most discriminatory metabolites identified by PCA and OPLS-DA were compared between subject groups using an independent samples Kruskal-Wallis one-way analysis of variance (ANOVA) test with all pairwise multiple comparisons. Within the patient subgroups, the Mann-Whitney U test was used to compare metabolite levels depending on hepatitis B e-antigen (HBeAg) status and treatment with anti-viral therapy. A Benjamini-Hochberg adjustment was applied to acquire the level of significance for multiple testing, with a declared level of statistical significance of P ere were significant differences in age (P eight (P ex (P e four clinical subgroups. Serum alanine aminotransferase (ALT) was significantly higher in the HCC group compared to controls (P erum α-fetoprotein was generally markedly elevated in HCC compared to controls; and serum creatinine levels were significantly reduced in the HCC group compared to the cirrhosis group (P = 0.004). A three-factor PCA scores plot showed clustering of the urinary NMR spectra from the four subgroups. metabolites that contributed to the discrimination between the subgr

关键词： Urinary metabolic profiling Hepatocellular carcinoma Nuclear magnetic resonance spectroscopy Hepatitis B Bangladesh

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化学镀镍套硬铬的耐蚀性

材料保护 1990年第3期23卷 25-28页

作者： J.e.me Csdkie M.me Neil A.Neiderer 吴其毅

用三种不同的试验,对化学镀镍套硬铬镀层和厚度与之相同的单一化学镀镍层、硬铬镀层作了比较,证明前者因两种镀层配合,耐蚀性提高。文中还列出了耐磨(泰伯)、附着力(法莱克斯)的比较数据。

关键词：镀镍硬铬镀层耐蚀性

eradicating extreme Poverty,the CPC’s Historic Feat

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China Today 2021年第7期70卷 46-48页

作者： JeROme KABORe ***

THe Communist Party of China(CPC)turns 100 in 2021,making it a year of celebration and of historical and symbolic significance for the Chinese *** its leadership,China has achieved spectacular development and succeede... 详细信息

关键词： CPC turns extreme

Behavioral effects of social challenges and genomic mechanisms of social priming： What＇s testosterone got to do with it？

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Current Zoology 2014年第6期60卷 791-803页

作者： Kimberly A. ROSVALL Mark e PeTeRSON Indiana University Department of Biology and Center for the Integrative Study of Animal Behavior Bloomington IN 47405 USA Viterbo University Departments of Biology and Mathematics La Crosse WI 54601 USA

Social challenges from rival conspecifics are common in the lives of animals, and changes in an animal＇s social environment can influence physiology and behavior in ways that appear to be adaptive in the face of continued social instability （i.e. social priming）. Recently, it has become clear that testosterone, long thought to be the primary mediator of these effects, may not always change in response to social challenges, an observation that highlights gaps in our understanding of the proximate me- chanisms by which animals respond to their social environment. Here, our goal is to address the degree to which testosterone me- diates organismal responses to social cues. To this end, we review the behavioral and physiological consequences of social chal- lenges, as well as their underlying hormonal and gene regulatory mechanisms. We also present a new case study from a wild songbird, the dark-eyed junco Junco hyemalis, in which we find largely divergent genome-wide transcriptional changes induced by social challenges and testosterone, respectively, in muscle and liver tissue. Our review underscores the diversity of mechani- sms that link the dynamic social environment with an organisms＇ genomic, hormonal, and behavioral state. This diversity among species, and even among tissues within an organism, reveals new insights into the pattern and process by which evolution may alter proximate mechanisms of social priming.

关键词： Social priming Challenge hypothesis Aggression Hormonal mechanism Testosterone Genomics

exploring the effects of dietary inulin in rainbow trout fed a high‑starch,100%plant‑based diet

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Journal of Animal Science and Biotechnology 2024年第2期15卷 713-732页

作者： Raphaël Defaix Jep Lokesh Laura Frohn Mickael Le Bechec Thierry Pigot Vincent Veron Anne Surget Sandra Biasutti Frederic Terrier Sandrine Skiba-Cassy Jerome Roy Stephane Panserat Karine Ricaud Universite de Pau et Des Pays de L’Adour E2S UPPAINRAENUMEASaint‑Pee‑Sur‑NivelleFrance Universite de Pau et Des Pays de L’Adour E2S UPPACNRSIMT Mines AlesIPREMPauFrance Universite de Pau et Des Pays de L’Adour E2S UPPAIUT des Pays de l’AdourDepartement Genie BiologiqueMont de MarsanFrance.

Background High dietary carbohydrates can spare protein in rainbow trout(Oncorhynchus mykiss)but may affect growth and ***,a prebiotic,could have nutritional and metabolic effects,along with anti-inflammatory properties in teleosts,improving growth and *** tested this hypothesis in rainbow trout by feeding them a 100%plant-based diet,which is a viable alternative to fishmeal and fish oil in aquaculture *** a two-factor design,we examined the impact of inulin(2%)as well as the variation in the carbohydrates(CHO)/plant protein ratio on rainbow *** assessed the influence of these factors on zootechnical parameters,plasma metabolites,gut microbiota,production of short-chain fatty acids and lactic acid,as well as the expression of free-fatty acid receptor genes in the mid-intestine,intermediary liver metabolism,and immune markers in a 12-week feeding *** The use of 2%inulin did not significantly change the fish intestinal microbiota,but interestingly,the high CHO/protein ratio group showed a change in intestinal microbiota and in particular the beta diversity,with 21 bacterial genera affected,including Ralstonia,Bacillus,and 11 lactic-acid producing *** were higher levels of butyric,and valeric acid in groups fed with high CHO/protein diet but not with *** high CHO/protein group showed a decrease in the expression of pro-inflammatory cytokines(il1b,il8,and tnfa)in liver and a lower expression of the genes coding for tight-junction proteins in mid-intestine(tjp1a and tjp3).However,the 2%inulin did not modify the expression of plasma immune ***,inulin induced a negative effect on rainbow trout growth performance irrespective of the dietary *** With a 100%plant-based diet,inclusion of high levels of carbohydrates could be a promising way for fish nutrition in aquaculture through a protein sparing effect whereas the supplementation of 2%inulin does not appear to improve the use of CHO wh

关键词： Aquaculture Fish nutrition Gut microbiota Immune markers Intermediary metabolism Inulin Prebiotic Rainbow trout Short-chain fatty acids

mechanically robust antifouling coating with dual-functional antifouling strategy by infiltrating PDMS into plasma-sprayed porous Al_(2)O_(3)-Cu coating

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Journal of Materials Science & Technology 2023年第28期159卷 125-137页

作者： Shuaiqiang Bi Kangwei Xu Guosheng Shao ke Yang Jiajia Tian State Centre for International Cooperation on Designer Low-Carbon and environmental Material(SCICDLCeM) School of Materials Science and EngineeringZhengzhou UniversityZhengzhou450001China Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou450001China Special Functional Materials Department Luoyang Ship Material Research InstituteLuoyang471023China Institute of metal Research Chinese Academy of SciencesShenyang110016China

Marine biofouling is a worldwide challenge that needs to be solved ***(dimethylsiloxane)(PDMS)-based fouling release coatings with low surface free energy(SFe)could effectively inhibit ***,their poor mechanical durability,adhesive strength,and antifouling performance under static conditions significantly limit their ***,a novel mechanically robust Al_(2)O_(3)-PDMS-Cu composite coating with strong adhesive strength and remarkable antifouling performance was *** Al_(2)O_(3)-PDMS-Cu coating loaded with a small amount of Cu was fabricated by infiltrating PDMS into plasma-sprayed micro/nano-scaled porous Al_(2)O_(3)-Cu *** showed that the fabri-cation of this Al_(2)O_(3)-PDMS-Cu coating did not alter the surface hydrophobicity and SFe of PDMS signif-icantly,thus presenting little influence on its inherent fouling release *** rigorous abrasion test,the Al_(2)O_(3)-PDMS-Cu coating presented remarkably improved surface hydrophobicity due to the ex-posure of micro/nano structure,rather than falling offas that of PDMS *** combination of excel-lent abrasion resistance and one order of magnitude higher adhesive strength and hardness than PDMS coating contributed to the outstanding mechanical robustness of Al_(2)O_(3)-PDMS-Cu ***,the antifouling assays against marine bacteria adhesion(95%reduction rate for escherichia coli.(***))and algae attachment(96%and 94%reduction rates for Chlorella and Phaeodactylum tricornutum(***-nutum),respectively after 21 days of incubation)demonstrated the superior antifouling performance of the Al_(2)O_(3)-PDMS-Cu ***,a high-performance Al_(2)O_(3)-PDMS-Cu antifouling coating with excellent mechanical robustness and long-term antifouling performance was achieved via the combination of me-chanical durability of Al_(2)O_(3)skeleton and the dual-functional antifouling strategy,i.e.,the fouling release property of PDMS and fouling r

关键词： Marine antifouling Al_(2)O_(3)-PDMS-Cu composite coating Plasma spraying mechanical robustness Dual-functional strategy Long-lasting antifouling

Underrepresentation of active histone modification marks in evolutionarily young genes

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Insect Science 2017年第2期24卷 174-186页

作者： Daqi Yu Wenwen Shi Yong e. Zhang State key Laboratory of Integrated Management of Pest Insects and Rodents & key Laboratory of the Zoological Systematics andevolution Institute of Zoology Chinese Academy of Sciences Beijing 100101 China

It is known that evolutionarily new genes can rapidly evolve essential roles in fundamental biological processes. Nevertheless, the underlying molecular mechanism of how they acquire theft novel transcriptional pattern is less characterized except for the role ofcis-regulatory evolution. epigenetic modification offers an alternative possibility. Here, we examined how histone modifications have changed among different gene age groups in Drosophila melanogaster by integrative analyses of an updated new gene dataset and published epigenomic data. We found a robust pattern across various datasets where both the coverage and intensity of active histone modifications, histone 3 lysine 4 trimethylation and lysine 36 trimethylation, increased with evolutionary age. Such a temporal correlation is negative and much weaker for the repressive histone mark, lysine 9 trimethylation, which is expected given its major association with heterochromatin. By further comparison with neighboring old genes, the depletion of active marks of new genes could be only partially explained by the local epigenetic context. All these data are consistent with the observation that older genes bear relatively higher expression levels and suggest that the evolution of histone modifications could be implicated in transcriptional evolution after gene birth.

关键词： Drosophila H3K4me3 H3K36me3 H3K9me3 epigenetic evolution newgene evolution