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围生期窒息24h内的振幅整合脑电图背景图形的恢复

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世界核心医学期刊文摘（儿科学分册） 2005年第10期1卷 25-26页

作者： Van Rooij L.G.m. toet m.c. Osredkar D. L.S. De Vries 郭战宏 Department o f Neonatology Wilhelmina Children's H. PO Box 85090 3508 AB Utrecht Netherl ands Dr.

Objective: To assess the time course of recovery of severely abnormal initial amplitude integrated electroencephalographic (aEEG) patterns (flat trace (FT), c ontinuous low voltage (cLV), or burst suppression (BS)) in full term asphyxiated neonates, in relation to other neurophysiological and neuroimaging findings and neurodevelopmental outcome. methods: A total of 190 aEEGs of full term infants were reviewed. The neonates were admitted within 6 hours of birth to the neonata l intensive care unit because of perinatal asphyxia, and aEEG recording was star ted immediately. In all, 160 infants were included; 65 of these had an initial F T or cLV pattern and 25 an initial BS pattern. Neurodevelopmental outcome was as sessed using a full neurological examination and the Griffiths’mental developme ntal scale. Results: In the FT/cLV group, the background pattern recovered to co ntinuous normal voltage within 24 hours in six of the 65 infants (9%). All six infants survived the neonatal period; one had a severe disability, and five were normal at follow up. In the BS group, the background pattern improved to normal voltage in 12 of the 25 infants (48%) within 24 hours. Of these infants, one d ied, five survived withmoderate to severe disability, two with mild disability, and four were normal. The patients who did not recover within 24 hours either di ed in the neonatal period or survived with a severe disability. conclusion: In t his study there was a small group of infants who presented with a severely abnor mal aEEG background pattern within six hours of birth, but who achieved recovery to a continuous normal background pattern within the first 24 hours. Sixty one percent of these infants survived without, or with a mild, disability.

关键词：围生期窒息图形的出生后发育量表神经发育神经学影像学结果神经生理学程及性抑制

Hard rock tunnel boring m.c.ine penetration test as an indicator of chipping process efficiency

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Journal of Rock m.c.anics and Geotechnical Engineering 2017年第4期9卷 611-622页

作者： m.c. Villeneuve Department of Geological Sciences University of Canterbury Christchurch 8140 New Zealand

The transition from grinding to chipping can be observed in tunnel boring m.c.ine(TBm) penetration test data by plotting the penetration rate(distance/revolution) against the net cutter thrust(force per cutter) over the full range of penetration rates in the *** penetration test data to the geological and geom.c.anical characteristics of rock masses through which a penetration test is conducted provides the ability to reveal the efficiency of the chipping process in response to changing geological *** test data can also be used to identify stress-induced tunnel face *** research shows that the strength of the rock is an important parameter for controlling how m.c. net cutter thrust is required to transition from grinding to *** also shows that the geological characteristics of a rock will determine how efficient chipping occurs once it has *** particular,geological characteristics that lead to efficient fracture propagation,such as fabric and m.c. contents,will lead to efficient *** findings will enable a better correlation between TBm performance and geological conditions for use in TBm design,as a basis for contractual payments where penetration rate dominates the excavation cycle and in further academ.c.investigations into the TBm excavation process.

关键词： Penetration rate Grinding chipping Geological characteristics Face stability

Spent coffee grounds as a renewable source of energy: An analysis of bulk powder flowability

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Particuology 2019年第2期17卷 92-100页

作者： L. massaro Sousa m.c. Ferreira Drying center for Pastes Suspensions and Seeds. Chemical Engineering Department Federal University of Sao Carlos. P.O. Box 676 13565-905 Sao Carlos Brazil

The main use for spent coffee grounds (ScG) produced in the soluble coffee industry is thermal energy generation in the industry itself. The ScG are processed using operations that are strongly dependent on powder flow behavior. In this study, we evaluated two classical flowability in dices of non-consolidated ScG powders: the angle of repose (AoR), and the Hausner ratio (HR). The influences of the mean particle diameter, particle size distribution (PSD), and water content on the AoR and HR values of ScG were analyzed for powders with a mean particle size range of 225-550 μm. For powders with a mean particle size close to 350 μm and for mixtures containing more than 40% fine particles, the HR (>1.35) and AoR (>45 °) values were characteristic of poor flowability. The AoR was sensitive to the powder PSD, and powders with similar mean particle sizes had higher AoR values when the PSD was larger. For powders w让h water contents up to 50%, the flowability indices were not greatly affected by the water content. A modified linear-mixture packing model was used to predict the packed bed void fractions for binary and ternary mixtures of the three base powders. The model was used to construct a ternary diagram to estimate the HR values of the mixtures. An equation was fitted to correlate HR and AoR. The proposed diagram and the equation provide insight into flow behavior and could be used for process design of industrial plants that handle ScG.

关键词： Spent coffee ground Biomass Flowability Hausner ratio Angle of repose

THE EFFEcT OF BORON AND cARBON ADDITION ON WELDABILITY OF DS TmS-75 SUPERALLOY

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Acta metallurgica Sinica(English Letters) 2005年第1期18卷 24-32页

作者： m.c. chaturvedi N.L. Richards Department of m.c.anical and Industrial Engineering University of manitoba Winnipeg Manitoba R3T 5V6 CanadaDepartment of Mechanical and Industrial Engineering University of Manitoba Winnipeg Manitoba R3T 5V6 Canada

Four alloys TmS-75 (Base), Base+B, Base+c and TmD-103 (Base+B+c) with varying levels of B, c were directionally solidified (DS), and their weldability was investigated by bead-on-plate electron beam welding. It was found that cracking occurred in the weld-metal, as well as in the heat affected zone (HAZ). Both γ/γ' and/or γ/carbide eutectic contributed to the weld-metal cracking, and the γ/γ' eutectic was found to be mainly responsible for cracking in HAZ. However, constitutional liquation of carbides seems to have made some contribution also. The B addition had a detrimental effect on HAZ cracking susceptibility, while c addition improved it appreciably even in the presence of B. In addition, no obvious differences were observed in cracking susceptibility of weld-metal in the four alloys. The cracking modes and m.c.anisms underlying the effect of B and c addition on weldability could be explained on the basis of m.c.ostructures of the four alloys.

关键词： Ni-based superalloy low melting point constituents liquation cracking

Thermal characteristics in the cutting of Inconel 718 Superalloy Using cW Nd:YAG Laser

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Journal of materials Science & Technology 2010年第4期26卷 362-366页

作者： D.G. Ahn K.W. Byun m.c. Kang Department of m.c.anical Engineering Chosun University 375 Seosuk-dong Dong-gu Gwang-ju 501-759 Korea Hybrid materials Solution National core Research (NcRc) Pusan National University San 30 Changjeon-dong Keumjeong-gu Busan 609-735 Korea

The objective of the this study is to investigate the effects of cutting parameters on thermal characteristics, including practical cutting regions, the formation of the kerfwidth and the heat transfer phenomenon, in the cutting of Inconel 718 super-alloy sheets using a cW Nd：YAG laser. From the results of the experiments, the influence of process parameters on both the practical cutting region and the kerfwidth has been examined. In addition, it has been shown that the kerfwidth of the specimen lies in the range of 0.53-0.61 mm. In order to examine characteristics of the heat transfer during the laser cutting process, a three-dimensional quasi-steady heat transfer analysis has been performed using the commercial code SYSWELD V9.0. From the results of the analysis, the influence of cutting parameters on the temperature distribution in the vicinity of the cut section has been quantitatively evaluated. Based on these results, optimal cutting conditions have been estimated.

关键词： cW Nd:YAG laser Inconel 718 Kerfwidth Quasi-steady heat transfer analysis

Towards cr（VI）-free anodization of aluminum alloys for aerospace adhesive bonding applications： A review

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Frontiers of chem.c.l Science and Engineering 2017年第3期11卷 465-482页

作者： Shoshan T. Abrahami John m.m. de Kok Herman Terryn Johannes m.c. mol materials innovation institute (m2i) 2628 XG Delft The Netherlands Delft University of Technology Department of Materials Science and Engineering 2628 CD Delft The Netherlands Fokker Aerostructures BV 3351 LB Papendrecht The Netherlands Department of materials and chemistry Research Group Electrochemical and Surface Engineering (SURF) Vrije Universiteit Brussel 1050 Brussels Belgium

For more than six decades, chrom.c.acid anodizing （cAA） has been the central process in the surface pre-treatment of aluminum for adhesively bonded aircraft structures. Unfortunately, this electrolyte contains hexavalent chromium （cr（VI））, a compound known for its toxicity and carcinogenic properties. To comply with the new strict international regulations, the cr（VI）-era will soon have to come to an end. Anodizing aluminum in acid electrolytes produces a self-ordered porous oxide layer. Although different acids can be used to create this type of structure, the excellent adhesion and corrosion resistance that is currently achieved by the complete cr（VI）-based process is not easily matched. This paper provides a critical overview and appraisal of proposed alternatives to cAA, including combinations of multiple anodizing steps, pre- and post anodizing treatments. The work is presented in terms of the modifications to the oxide properties, such as morphological features （e.g., pore size, barrier layer thickness） and surface chemistry, in order to evaluate the link between fundamental principles of adhesion and bond performance.

关键词： aluminum cr(VI)-free surface pre-treat- merits anodizing adhesive bonding

Dispersal of invasive species by drifting

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current Zoology 2011年第6期57卷 818-827页

作者： m.c. VAN RIEL G. VAN DER VELDE A. BIJ DE VAATE Radboud University Nijmegen Institute for Water and Wetland Research Department of Animal Ecology and Ecophysiology Section Aquatic Animal Ecology Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands Team Freshwater Ecology DLO-Alterra P.O. Box 47 6700 AA Wageningen The Netherlands Netherlands centre for Biodiversity Naturalis EO. Box 9517 2300 RA Leiden The Netherlands Waterfauna Hydrobiologisch Adviesbureau Oostrandpark 30 8212 AP Lelystad The Netherlands

Drifting can be an effective way for aquatic organisms to disperse and colonise new areas. Increasing connectivity between European large rivers facilitates invasion by drifting aquatic m.c.oinvertebrates. The present study shows that high abundances of invasive species drift in the headstream of the river Rhine. Dikerogammarus villosus and chelicorophium.c.r- vispinum represented up to 90% of the total of drifting m.c.oinvertebrates. Drift activity shows seasonal and diel patterns. most species started drifting in spring and were most abundant in the water column during the summer period. Drift activity was very low during the winter period. Diel patterns were apparent; most species, including D. villosus, drifted during the night. Drifting m.c.oinvertebrates colonised stony substrate directly from the water column. D. villosus generally colonised the substrate at night, while higher numbers of c. curvispinum.c.lonised the substrate during the day. It is very likely that drifting functions as a disper- sal m.c.anism for crustacean invaders. Once waterways are connected, these species are no longer necessarily dependent on dispersal vectors other than drift for extending their distribution range

关键词： Amphipods Invaders colonization Drift Daily rhythms Seasonal variation

Vascular plants distribution in relation to topography and environmental variables in alpine zone of Kedarnath Wild Life Sanctuary,West Himalaya

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Journal of mountain Science 2018年第9期15卷 1936-1949页

作者： cHANDRA Sudeep SINGH Ankit SINGH c.P. NAUTIYAL m.c. RAWAT L.S. High Altitude Plant Physiology Research centre(HAPPRc)H.N.B.Garhwal University Srinagar Garhwal-246174UttarakhandIndia Space Applications centre (Indian Space Research Organization)Ahmedabad 380015India Govind Ballabh Pant National Institute of Himalayan Environment&Sustainable Development Garhwal Unit Srinagar Garhwal-246174UttarakhandIndia

The present study was carried out in Tungnath alpine meadows of Kedarnath Wild Life Sanctuary, Western Himalaya from subalpine to upper alpine zone. A total of four summits were selected along an altitudinal gradient and sampled for detailed vegetation analysis using multi summit approach as per Global observation research initiative in alpine environments(GLORIA). Species richness, diversity, and evenness among four summits as well as the interaction between environmental variables with plant communities were assessed. monthly mean soil temperature was calculated using data retrieved from geo-precision temperature logger in order to identify the trend of soil temperature among different season and altitudinal gradient and its implications to plant communities. Soil samples were analyzed fromeach summit by collecting randomized composite soil samples. The indirect non-metric multidimensional scaling(NmDS) and direct canonical correspondence analysis(ccA) tools of ordination techniques to determine the linkage between plant species from various sample summits and biotic/abiotic environmental gradients were used in the present study. The results of the study demonstrated increase in species richness as soil temperature increases, the ecotone representing summits were found most warm summits followed by highest species richness. Annual soil temperature increased by 1.43°c at timberline ecotone. Whereas, at upper alpine zone the soil temperature increased by 0.810 c from year 2015 to 2016. S?rensen's similarity index was found to be increased between subalpine and upper alpine zone with increase in the presence of subalpine plant species at upper alpine zone. Both the ordination tools separate the subalpine summit and their respective vegetation from summits representingtimberline ecotone and upper alpine zone. Soil p H, altitude, soil cation exchange capacity were found as the key abiotic drivers for distribution of plant species.

关键词： GLORIA Non-metric multidimensionalscaling (NmDS) canonical correspondence analysis(ccA) Ecotone West Himalaya

HIGH-TEmPERATURE OXIDATION OF FGH96 P/m SUPERALLOY

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Acta metallurgica Sinica(English Letters) 2007年第2期20卷 102-110页

作者： F.J. Liu m.c. Zhang J.X. Dong Y. W. Zhang School of materials Science and Engineering University of Science and Technology BeijingBeijing 100083 China central Iron and Steel Research Institute Beijing 100081 China

High temperature oxidation behaviors of FGH96 P/m superaUoy have been studied in air at temperatures ranging from 600 to 1000℃. By means of isothermal oxidation testing, X-ray diffraction, SEm （scanning electron m.c.oscopy）, and EDS （energy dispersive X-ray spectroscopy） analyses, the oxidation kinetics as well as the composition and morphology of scales were investigated. Thermodynam.c.calculations were used to explain the oxidation m.c.anism. The results showed that as the oxidation temperature increased, the oxidation rate, the scale thickness, and scale spallation increased. FGH96 P/m superalloy exhibits good oxidation resistance at temperature below 800℃. The oxidation kinetics follows an approximately parabolic rate law, and the oxide layer was mainly composed of cr2O3 TiO2 and a little amount of Nicr2O4. The oxidation is controlled by the transmission of chromium. titanium, and oxygen through the oxide scale.

关键词： FGH96 P/m superalloy high temperature oxidation oxide scale