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室外涂料对山毛榉木材气体渗透性的影响

南京林业大学学报（自然科学版） 2007年第1期31卷 1-4页

作者：陆步云 A.merlin P.Perre L.Chrusciel 周定国南京林业大学木材工业学院江苏南京210037 LERMAB UHP-NANCY1 Nancyfrance54600

通过比较山毛榉木材在4种室外用涂料涂饰前和涂饰后的气体渗透能力,研究木材弦向和径向的气体渗透能力的变化。结果表明:漆膜可较好地保护木材免受空气和水的侵害,经4种涂料涂饰后,山毛榉木材的气体渗透值均有所下降;溶剂型涂料的气体... 详细信息

通过比较山毛榉木材在4种室外用涂料涂饰前和涂饰后的气体渗透能力,研究木材弦向和径向的气体渗透能力的变化。结果表明:漆膜可较好地保护木材免受空气和水的侵害,经4种涂料涂饰后,山毛榉木材的气体渗透值均有所下降;溶剂型涂料的气体渗透性能比水溶性涂料差,色漆比清漆更难渗透;山毛榉基材弦向的气体渗透能力在涂饰前和涂饰后均比径向略大。

关键词：室外涂料山毛榉气体渗透

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电压矢量控制变频器

国外电气自动化 1990年第6期11卷 26-32,62页

作者： simo.,KP 艾玉林

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溶栓疗法的危险与得益

国外学者来访报告 1996年第3期16卷 12-14页

作者： simo.,ML 李萍荷兰Rotterdam医学院胸外科中心

Adsorption of Nickel in Aqueous Solution onto Natural Maghnite

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Materials Sciences and Applications 2013年第2期4卷 153-161页

作者： Mohamed Amine Zenasni Said Benfarhi André merlin Stéphane Molina Béatrice George Bahia Meroufel Institute of Sciences and Technology Department of Sciences Bechar University Bechar Algeria Institute of Sciences Department of Chemistry Batna University Batna Algeria Laboratory of Studies and Research on Material Wood (LERMAB) University of Lorraine Nancy France Laboratory of Studies and Research on Material Wood (LERMAB) University of Lorraine Nancy France.

Maghnite clay obtained from Tlemcen, Algeria was investigated to remove heavy metal ion from wastewater. Thus, the present study includes the adsorption of Ni(II) in aqueous solution on maghnite clay through the process of adsorption under various conditions (with variable concentration of metal ion, temperature, pH and mixing time). Increasing pH favours the removal of metal ions till they are precipitated as the insoluble hydroxides. The uptake is rapid with maximum adsorption being observed within 10 min for Ni(II). In addition, the results obtained from adsorption isotherm indicated that these data can be better fitted with the Langmuir and Freundlich equations than the Dubinin-Radushke- vich (D-R) equation.

关键词： Natural Maghnite Ni(II) Adsorption

Adsorption of Cu(II) on maghnite from aqueous solution: Effects of pH, initial concentration, interaction time and temperature

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Natural Science 2012年第11期4卷 856-868页

作者： Mohamed Amine Zenasni Said Benfarhi André merlin Stéphane Molina Béatrice George Bahia Meroufel Institute of Sciences and Technology Department of Sciences Bechar University Bechar Algeria Istitute of Sciences Department of Chemistry Batna University Batna Algeria Laboratory of Studies and Research on Material Wood (LERMAB) University of Lorraine Nancy France nstitute of Sciences and Technology Department of Sciences Bechar University Bechar Algeria

The adsorption behaviour of Cu2+ onto maghnite was conducted under batch conditions. The effect of time, pH of the dispersion, temperature and initial metal concentration on the adsorption of Cu2+ onto maghnite was investigated. In this study, 94% of Cu(II), was adsorbed on the maghnite clay when the equilibrium was reached at 120 min. The adsorption of Cu2+ was a fast process that followed the pseudo-second-order kinetics. This process could be described by the Langmuir model and gave a maximum Cu2+ adsorption capacity of 21.78 mg/g at 293 K. The thermodynamic parameters such as variation of enthalpy ΔH, variation of entropy ΔS and variation of Gibbs free energy ΔG were calculated from the slope and intercept of lnKd vs. 1/T plots. The adsorption was endothermic reaction. The adsorption process for this natural maghnite is more spontaneous because the values of ΔG are less negative. The results suggested that natural maghnite was suitable as sorbent material for the recovery and adsorption of metal ion from aqueous solutions.

关键词： Adsorption Isotherms Natural Maghnite Heavy Metal Cu(II)

Multilayer CVD graphene electrodes using a transfer-free process for the next generation of optically transparent and MRI-compatible neural interfaces

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Microsystems & Nanoengineering 2022年第5期8卷 183-196页

作者： Nasim Bakhshaee Babaroud merlin Palmar Andrada Iulia Velea Chiara Coletti Sebastian Weingärtner Frans Vos Wouter A.Serdijn Sten Vollebregt Vasiliki Giagka Department of Microelectronics Faculty of Electrical EngineeringMathematics and Computer ScienceDelft University of TechnologyMekelweg 4Delft 2628 CDThe Netherlands Technologies for Bioelectronics Group Department of System Integration and Interconnection TechnologiesFraunhofer Institute for Reliability and Micro-integration IZMGustav-Meyer-Allee 25Berlin 13355Germany Department of Imaging Physics Faculty of Applied ScienceDelft University of TechnologyLorentzweg 1Delft 2628 CJThe Netherlands Erasmus University Medical Center(Erasmus MC) dr.Molewaterplein 40Rotterdam 3015 GDThe Netherlands

Multimodal platforms combining electrical neural recording and stimulation,optogenetics,optical imaging,and magnetic resonance(MRI)imaging are emerging as a promising platform to enhance the depth of characterization in neuroscientific *** conductive,optically transparent,and MRI-compatible electrodes can optimally combine all *** as a suitable electrode candidate material can be grown via chemical vapor deposition(CVD)processes and sandwiched between transparent biocompatible ***,due to the high graphene growth temperature(≥900℃)and the presence of polymers,fabrication is commonly based on a manual transfer process of pre-grown graphene sheets,which causes reliability *** this paper,we present CVD-based multilayer graphene electrodes fabricated using a wafer-scale transfer-free process for use in optically transparent and MRI-compatible neural *** fabricated electrodes feature very low impedances which are comparable to those of noble metal electrodes of the same size and *** also exhibit the highest charge storage capacity(CSC)reported to date among all previously fabricated CVD graphene *** graphene electrodes did not reveal any photo-induced artifact during 10-Hz light pulse ***,we show here,for the first time,that CVD graphene electrodes do not cause any image artifact in a 3T MRI *** results demonstrate that multilayer graphene electrodes are excellent candidates for the next generation of neural interfaces and can substitute the standard conventional metal *** fabricated graphene electrodes enable multimodal neural recording,electrical and optogenetic stimulation,while allowing for optical imaging,as well as,artifact-free MRI studies.

关键词： transparent transfer process

The C-terminal Binding Protein Co-Repressor(Ctbp) in the regulation of adipogenesis.

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The C-terminal Binding Protein Co-Repressor(Ctbp) in the reg...

Diagnostic Reference Levels of Adults CT-Scan Imaging in Cameroon: A Pilot Study of Four Commonest CT-Protocols in Five Radiology Departments

第十七届国际生物物理大会;第十二届中国生物物理大会

作者： merlin Crosslev Helen Williams Briony Jack Hannah Nicholas Kim Bell-Anderson School of Biotechnology and Biomolecular Science University of New South WalesSydneyAustralia2052 School of Molecular Bioscience University of SydneyAustralia2006

We have investigated gene regulatory proteins that influence differentiation of 3T3-L1 *** our experiments, forced expression of the DNA-binding transcription factors Basic Kruppel-like Factor/Kruppel-like Factor 3 (Klf3) and Gata2 can inhibit ***3 recruits the cofactor Ctbp,while Gata2 recruits Friend of Gatal (Fogl) and Fog2,which then recruit *** results suggest that Ctbp plays a role in adipogenesis but is required at only a subset of ***,we have extended our analysis of the metabolic phenotype of the Klf3 knockout mouse on conventional and high fat *** conclude that in vivo Klf3 deficiency affects white adipose tissue and glucose tolerance and in part protects from the effects of a high fat diet.

关键词： DNA-binding proteins Transcription factors Zinc Fingers Adipogenesis Ctbp

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Open Journal of Medical Imaging 2017年第1期7卷 1-8页

作者： Boniface Moifo Jean Roger Moulion Tapouh Mathurin Neossi Guena Thierry Ndzana Ndah Richard Ndi Samba Augustin simo Department of Radiology and Radiation Oncology Faculty of Medicine and Biomedical Sciences The University of Yaoundé 1 Yaounde Cameroon Radiology Department Yaounde Gynaeco-Obstetric and Pediatric Hospital Yaounde Cameroon Radiology Department Yaounde University Teaching Hospital Yaounde Cameroon Department of Biomedical Sciences University of Ngaoundere Ngaoundere Cameroon National Radiation Protection Agency (ANRP) Yaounde Cameroon

CT-scan is the most irradiating tool in diagnostic radiology. For 5% - 10% of diagnostic X-ray procedures, it is responsible for 34% of irradiation according to UNSCEAR. Patients radiation protection must therefore be increased during CT-scan procedures. This requires the rigorous application of optimization principle which imposes to have “diagnostic reference levels”. Objective: The aim of this study was to determine the diagnostic reference levels (DRLs) of the four most frequent CT-scans examinations of adults in Cameroon. Material and Method: It was a cross-sectional pilot study carried out from April to September 2015 in five health facilities using CT-scan in Cameroon. The studied variables were: patients age and sex, type of CT-scan examination (cerebral, chest, abdomino-pelvic, lumbar spine), Used of IV contrast (IV﹣/ IV+), acquisition length, time of tube rotation, voltage (kV), mAs, pitch, thickness of slices, CTDIvol and DLP. For each type of examination, at least 30 patients were included per center, consecutively on the randomly predetermined days. The DRL for each type of examination was defined as the 75th percentile of its PDL and CTDIvol. Results: Of the 696 examinations, 41.2% were cerebral, 26.9% abdomino-pelvic, 17.7% lumbar spine and 14.2% chest. The mean age of patients was 52 ± 15 years [20 - 90 years], 58.9% were 50 years and older. The sex-ratio was 1.26 (55.9% males). The CT machines were 4, 8 and 16 multidetectors. The 75th percentile of DLP or DRLs [standard deviation] was: [1150 ± 278 mGy·cm], [770 ± 477 mGy·cm], [720 ± 170 mGy·cm] and [715 ± 187 mGy·cm] respectively for cerebral, lumbar spine, abdominopelvic and chest CT-scans. Taking in consideration the number of detectors, the 75th percentile of the Dose-Length product decreased with the increase number of detectors for cerebral examinations but was the highest with 16 MDCT for the abdominopelvic, lumbar spine and chest CT-scans. For the chest and lumbar spine examinations, there wa

关键词： Optimization Diagnostic Reference Levels Dose Length Product CT Dose Index Patient Dose Radiation Protection Best Practices

Evolution of the Outcomes of Children with Acute Leukemia in Congo

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Open Journal of Blood Diseases 2022年第1期12卷 1-9页

作者： Lydie Ocini Ngolet simo Josué Luokdom Alexis Fortuné Bolenga Liboko Firmine Olivia Galiba Atipo Tsiba Alexis Elira Dokekias Department of Medical Hematology Teaching Hospital Brazzaville Congo Pharmacy Department University of Mountains Banganté Cameroon Department of Oncology Teaching Hospital Brazzaville Congo

Background: To lower the mori-mortality related to the aggressiveness of acute leukemia’s chemotherapy regimens, we have implemented in 2017 two low toxicity chemotherapy regimens and new supportive care strategies. The aim of the study is to evaluate our new treatments. Materials and Method: A retrospective study was carried out from January 2014 to May 2021 in the hematology department of the teaching hospital in Brazzaville. The study concerned 47 children diagnosed with acute leukemia. Participants were divided into two groups: acute leukemia diagnosed before 2017 (group 1: 23 children) and after 2017 (group 2: 14 children). They were compared using the chi-square. Results: The median age was 10.0 ± 5.01 years. Features and outcomes of group 2 were better. The median duration of symptoms was shorter: 2.45 ± 2.87 months (p = 0.036). The Karnosky score was higher (p = 0.002) and white blood cell count lower (p = 0.331). Both groups started the treatment with a delay of 6 days. The induction treatment was completed in 69.6% before 2017 versus 93.3% after. The rate of relapse was more important for group 1: 85.7% versus 14.3% (p = 0.01). Conclusion: Trainings of professionals have improved the characteristics outcomes of our patients and should be pursued. Considering the high relapse rate, our protocol will need to be intensified.

关键词： Childhood Acute Leukemia Outcomes