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Aerosol scattering coefficients and major chemical compositions of fine particles observed at a rural site in the central Pearl River Delta,South China

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Journal of Environmental Sciences 2012年第1期24卷 72-77页

作者： Xinming Wang Xiang Ding Xiaoxin Fu Quanfu He Shaoyi Wang francois Bernard Xiuying Zhao Dui Wu State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of Sciences Guangzhou 510640China Graduate University of Chinese Academy of Sciences Beijing 100049China Guangzhou Environmental Monitoring Center Guangzhou 510030China Institute of Tropical and Marine Meteorology China Meteorological AgencyGuangzhou 510080China

During November–December 2010 aerosol scattering coefficients were monitored using a single-waved （525 nm） Nephelometer at a regional monitoring station in the central Pearl River Delta region and 24-hr fine particle （PM 2.5） samples were also collected during the period using quartz filters for the analysis of major chemical components including organic carbon （OC）,elemental carbon （EC）,sulfate,nitrate and *** average,these five components accounted for about 85% of PM 2.5 mass and contributed 42% （OC）,19% （SO 4 2 -）,12% （NO 3 -）,8.4% （NH 4＋） and 3.7% （EC）,to PM 2.5 mass.A relatively higher mass scattering efficiency of 5.3 m 2/g was obtained for fine particles based on the linear regression between scattering coefficients and PM 2.5 mass *** extinction budget based on IMPROVE approach revealed that ammonium sulfate,particulate organic matter,ammonium nitrate and EC in average contributed about 32%,28%,20% and 6% to the light extinction coefficients,respectively.

关键词： scattering coefficients visibility fine particle (PM 2.5) chemical compositions

Proteomic analyses of the SMYD family interactomes identify HSP90 as a novel target for SMYD2

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分子细胞生物学报:英文版 2011年第5期3卷 301-308页

作者： Mohamed Abu-Farha Sylvain Lanouette Fred Elisma Veronique Tremblay Jeffery Butson Daniel Figeys Jean-francois Couture Ottawa Institute of Systems Biology Department of BiochemistryMicrobiology and ImmunologyUniversity of Ottawa451 Smyth RoadRoger-Guindon HallOttawaONK1H8M5Canada Biochemistry and Molecular Biology Unit Dasman Diabetes InstituteDasman 15462Kuwait

The SMYD(SET and MYND domain)family of lysine methyltransferases(KMTs)plays pivotal roles in various cellular processes,including gene expression regulation and DNA damage *** identified as genuine histone methyltransferases,specific members of this family have recently been shown to methylate non-histone proteins such as p53,VEGFR,and the retinoblastoma tumor suppressor(pRb).To gain further functional insights into this family of KMTs,we generated the protein interaction network for three different human SMYD proteins(SMYD2,SMYD3,and SMYD5).Characterization of each SMYD protein network revealed that they associate with both shared and unique sets of *** those,we found that HSP90 and several of its co-chaperones interact specifically with the tetratrico peptide repeat(TPR)-containing SMYD2 and ***,using proteomic and biochemical techniques,we provide evidence that SMYD2 methylates K209 and K615 on HSP90 nucleotide-binding and dimerization domains,*** addition,we found that each methylation site displays unique reactivity in regard to the presence of HSP90 co-chaperones,pH,and demethylation by the lysine amine oxidase LSD1,suggesting that alternative mechanisms control HSP90 methylation by ***,this study highlights the ability of SMYD proteins to form unique protein complexes that may underlie their various biological functions and the SMYD2-mediated methylation of the key molecular chaperone HSP90.

关键词： SMYD proteins HSP90 lysine methylation SET domain histone methylation

Intrauterine growth retardation affects liver bile acid metabolism in growing pigs:effects associated with the changes of colonic bile acid derivatives

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Journal of Animal Science and Biotechnology 2023年第2期14卷 711-728页

作者： Yang Liu mdAbul Kalam Azad Wanghong Zhang Liang Xiong francois Blachier Zugong Yu Xiangfeng Kong Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process Key Laboratory of Agro‑Ecological Processes in Subtropical RegionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125HunanChina College of Veterinary Medicine Nanjing Agricultural UniversityNanjing 210095JiangsuChina UMR PNCA Universite Paris-SaclayINRAE75005 AgroParisTechParisFrance.

Background:Intrauterine growth retardation(IUGR)is associated with severely impaired nutrient metabolism and intestinal development of *** previous study found that IUGR altered intestinal microbiota and metabolites in the ***,the consequences of IUGR on bile acid metabolism in pigs remained *** present study aimed to investigate the bile acid metabolism in the liver and the profile of bile acid derivatives in the colon of grow-ing pigs with IUGR using bile acid targeted ***,we determined correlations between colonic microbiota composition and metabolites of IUGR and normal birth weight(NBW)pigs at different growth stages that were 7,21,and 28-day-old,and the average body weight(BW)of 25,50,and 100 kg of the NBW ***:The results showed that the plasma total bile acid concentration was higher(P<0.05)at the 25 kg BW stage and tended to increase(P=0.08)at 28-day-old in IUGR *** hepatic gene expressions related to bile acid synthe-sis(CYP7A1,CYP27A1,and NTCP)were up-regulated(P<0.05),and the genes related to glucose and lipid metabolism(ATGL,HSL,and PC)were down-regulated(P<0.05)at the 25 kg BW stage in IUGR pigs when compared with the NBW *** metabolomics analysis showed that 29 bile acids and related compounds were detected in the colon of *** colonic concentrations of dehydrolithocholic acid and apocholic acid were increased(P<0.05),while isodeoxycholic acid and 6,7-diketolithocholic acid were decreased(P<0.05)in IUGR pigs,when compared with the NBW pigs at the 25 kg BW ***,Spearman’s correlation analysis revealed that colonic Unclassified_[Mogi-bacteriaceae],Lachnospira,and Slackia abundances were negatively correlated(P<0.05)with dehydrolithocholic acid,as well as the Unclassified_Clostridiaceae abundance with 6,7-diketolithocholic acid at the 25 kg BW ***:These findings suggest that IUGR could affect bile acid and glucolipid metabolism in growing pigs,especially at th

关键词： Bile acid metabolism Glucolipid metabolism Intestinal microbiota Intrauterine growth retardation Pigs

Prognostic value of chemotherapy-induced hematological toxicity in metastatic colorectal cancer patients

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World Journal of Gastroenterology 2014年第6期20卷 1565-1573页

作者： Laurie Rambach Aurelie Bertaut Julie Vincent Veronique Lorgis Sylvain Ladoire francois Ghiringhelli Department of Medical Oncology Centre Georges-Fran ois Leclerc Biostatistics and Epidemiological Unit EA4184 Centre Georges-Fran ois Leclerc Institut National de la Santé et de la Recherche Médicale (INSERM) CRI-866 Faculty of Medicine School of Medicine University of Burgundy

AIM: To establish whether chemotherapy-induced neutropenia is predictive of better outcome in patients with metastatic colorectal cancer (mCRC).

关键词： Colorectal cancer Metastasis Prognostic factor Neutropenia Chemotherapy

Forecasting pest risk level in roses greenhouse:Adaptive neuro-fuzzy inference system vs artificial neural networks

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Information Processing in Agriculture 2021年第3期8卷 386-397页

作者： Ahmad Tay Frederic Lafont Jean-francois Balmat University of Toulon LISUMR CNRS 7020Bt XCS 6058483041 Toulon cedex 9France

The purpose of this study is to establish a system for the prediction of the pests’risk level in a roses greenhouse by applying Artificial Neural Networks(ANNs)and an Adaptive Neuro-Fuzzy Inference System(ANFIS).Pests in roses greenhouses are known to be fatal to plants if not detected at a premature *** detection could avoid huge agronomic and eco-nomic ***,it could be a difficult task to *** complexities arising from the interactions between variables influencing the development could be a barrier to fulfill the previously mentioned *** output of the developed system represents the next day?s risk level of Western flower Thrips(WFT)(Frankliniella occidentalis)in a roses *** explanatory variables,such as internal temperature,internal humidity,today’s pest risk level and human intervention have been considered for this *** main contributions of this study are three fold;providing a daily estimate WFT risk level,reduc-ing the use of pesticides and finally mitigating yield *** obtained results were com-pared to each other and to real *** performance of the models has been evaluated by 3 statistical *** results showed conspicuous performance of both models,indicating their efficiency for pest *** novelty associated with the sys-tem is the creation of decision support tool for daily risk assessment of *** on a small number of variables,this system is a monitoring tool which contributes to help farm-ers early reveal warning *** addition,this is a first attempt to employ ANNs and ANFIS for the prediction of WFT。

关键词： Decision making Artificial neural networks ANFIS Risk assessment Integrated pest management

Low-k integration: Gas screening for cryogenic etching and plasma damage mitigation

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Frontiers of Chemical Science and Engineering 2019年第3期13卷 511-516页

作者： Romain Chanson Remi Dussart Thomas Tillocher P. Lefaucheux Christian Dussarrat Jean francois de M arneffe IMEC v.z.w. 3001 LeuvenBelgium GREMI/University of Orleans OrleansFrance Air Liquide Laboratories TsukubaJapan

The integration of porous organo-silicate low-k materials has met a lot of technical *** of the main issues is plasma-induced damage,occurring for all plasma steps involved during interconnects *** the present paper,we focus on porous SiOCH low-k damage mitigation using cryogenic temperature so as to enable micro-capillary *** aim is to protect the porous low-k from plasma-induced damage and keep the k-value of the material unchanged,in order to limit the RC delay of interconnexion levels while shrinking the microchip *** cryogenic temperature is used to condense a gas inside the porous low-k ***,the etching process is performed at the temperature of condensation in order to keep the condensate trapped inside the material during the *** the first part of this work,the condensation properties of several gases are screened,leading to a down selection of five ***,their stability into the porous structure is evaluated at different *** of them are used for plasma damage mitigation *** mitigation is effective and shows negligible damage for one of the gases at-50℃.

关键词： low-A nanotechnology micro-electronics cryo-etching plasma processing

Effects of Cu^(2+)and humic acids on degradation and fate of TBBPA in pure culture of Pseudomonas *** CDT

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Journal of Environmental Sciences 2017年第12期29卷 60-67页

作者： Yini Ma Yingying Zhao Yongfeng Wang Xiangzhen Li Feifei Sun Phillippe francois-Xavier Corvini Rong Ji State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Key Laboratory of Environmental and Applied Microbiology Chengdu Institute of BiologyChinese Academy of SciencesChengdu 610041China Institute for Ecopreneurship School of Life SciencesUniversity of Applied Sciences and Arts Northwestern SwitzerlandGrundenstrasse 40Muttenz CH-4132Switzerland

Soil contamination with tetrabromobisphenol A（TBBPA） has caused great concerns;however, the presence of heavy metals and soil organic matter on the biodegradation of TBBPA is still unclear. We isolated Pseudomonas sp. strain CDT, a TBBPA-degrading bacterium, from activated sludge and incubated it with ^（14）C-labeled TBBPA for 87 days in the absence and presence of Cu^（2＋）and humic acids（HA）. TBBPA was degraded to organic-solvent extractable（59.4% ± 2.2%） and non-extractable（25.1% ± 1.3%） metabolites,mineralized to CO_2（4.8% ± 0.8%）, and assimilated into cells（10.6% ± 0.9%） at the end of incubation. When Cu^（2＋）was present, the transformation of extractable metabolites into non-extractable metabolites and mineralization were inhibited, possibly due to the toxicity of Cu^（2＋）to cells. HA significantly inhibited both dissipation and mineralization of TBBPA and altered the fate of TBBPA in the culture by formation of HA-bound residues that amounted to 22.1% ± 3.7% of the transformed TBBPA. The inhibition from HA was attributed to adsorption of TBBPA and formation of bound residues with HA via reaction of reactive metabolites with HA molecules, which decreased bioavailability of TBBPA and metabolites in the culture. When Cu^（2＋）and HA were both present, Cu^（2＋）significantly promoted the HA inhibition on TBBPA dissipation but not on metabolite degradation. The results provide insights into individual and interactive effects of Cu^（2＋）and soil organic matter on the biotransformation of TBBPA and indicate that soil organic matter plays an essential role in determining the fate of organic pollutants in soil and mitigating heavy metal toxicity.

关键词： Tetrabromobisphenol-A Biodegradation Soil organic matter Heavy metals Fate

Liver transplantation for hepatocellular carcinoma： is zero recurrence theoretically possible？

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Hepatobiliary & Pancreatic Diseases International 2016年第2期15卷 147-151页

作者： Sabine Irtan Louise Barbier Claire Francoz Federica Dondéro francois Durand Jacques Belghiti Department of Hepato-Pancreato-Biliary Surgery Beaujon HospitalAssistance Publique Hopitaux de ParisUniversity Denis Diderot-ParisⅦClichyFrance Department of Hepatology Beaujon HospitalAssistance Publique Hopitaux de ParisUniversity Denis Diderot-ParisⅦClichyFrance

BACKGROUND： Hepatocellular carcinoma（HCC） recurrence remains a key issue after liver transplantation. This study aimed to determine a subgroup of HCC patients within the Milan criteria who could achieve a theoretical goal of zero recurrence rates after liver ***： Between 1999 and 2009, 179 patients who received liver transplantation for HCC within the Milan criteria were retrospectively included. Analysis of the factors associated with HCC recurrence was performed to determine the subgroup of patients at the lowest risk of ***： Seventy-two percent of the patients received a bridging therapy, including 54 liver resections. Eleven（6.1%） patients recurred within a delay of 19±22 months and ultimately died. Factors associated with recurrence were serum alpha-fetoprotein level 〉400 ng/m L, satellite nodules, poor differentiation, microvascular invasion and cholangiocarcinoma component. Recurrence rates decreased from 6.1% to 3.1% in patients without any of these ***： Among HCC patients within the Milan criteria, selecting patients with factors based on histology would allow tending towards zero recurrence, and prior histological assessment by liver biopsy or resection may be essential to rule out poorly differentiated tumors, microvascular invasion,and cholangiocarcinoma component.

关键词： hepatocellular carcinoma liver transplantation neoplasm recurrence survival rate

Facilitated Fe Nutrition by Phenolic Compounds Excreted by the Arabidopsis ABCG37/PDR9 Transporter Requires the IRT1/FRO2 High-Affinity Root Fe^2＋ Transport System

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Molecular Plant 2016年第3期9卷 485-488页

作者： Pierre Fourcroy Nicolas Tissot Frederic Gaymard Jean-francois Briat Christian Dubos Biochimie et Physiologie Moldculaire des Plantes Centre National de la Recherche Scientifique Institut National de la Recherche Agronomique Universite Montpellier SupAgro Bat 7 2 place Viala 34060 Montpellier Cedex 1 France

Iron （Fe） is an essential metal nutrient for plant productivity and plant product quality （Briat et al., 2015）. Fe exists under two forms, ferrous （Fe^2＋） or ferric （Fe^3＋）, and is very reactive with oxygen, explaining why Fe plant nutrition is dependent upon both Fe chelation and Fe reduction. Fe availability in the soil is pH dependent, this metal being particularly insoluble in its ferric form in calcareous soils, representing one-third of the world＇s cultivated soils. Consequently, plants grown on these soils, in particular non-graminaceous plants, often suffer from Fe deficiency, which alters their growth.

关键词： explaining dependent calcareous