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| 1 | Effects of Polypropylene Fibers on the Physical and Mechanical Properties of Recycled Aggregate Concrete显示文摘The viability of using polypropylene fibers(PPF) in concrete was largely studied. Yet, few of the existing research studies investigated the effects of PPF on the properties of concrete containing recycled concrete aggregate(RCA). Mixes with different RCA replacement ratios and different PPF content were designed and tested. The test results showed that the addition of PPF did not change significantly the compressive strength and the density of the concrete, but slightly decreased its modulus of elasticity and Poisson’s ratio. The drop in the splitting tensile strength and the flexural strength due to RCA inclusions was to a large extent compensated by the PPF addition. The water absorption decreased and the percent voids increased with increased PPF addition. Correlations between the RCA content, the PPF content and the properties of concrete were studied. Useful regression models were proposed to predict the properties of concrete in relevant ranges of RCA and PPF content. | Pierre Matar Gérard-Philippe Zéhil | 2019 | Journal of Wuhan University of Technology(Materials Science)2019，34，6： | 4 |
| 2 | Assessing the relationship between the rumen microbiota and feed efficiency in Nellore steers显示文摘Background:Ruminants rely upon a complex community of microbes in their rumen to convert host-indigestible feed into nutrients.However,little is known about the association between the rumen microbiota and feed efficiency traits in Nellore(Bos indicus)cattle,a breed of major economic importance to the global beef market.Here,we compare the composition of the bacterial,archaeal and fungal communities in the rumen of Nellore steers with high and low feed efficiency(FE)phenotypes,as measured by residual feed intake(RFI).Results:The Firmicutes to Bacteroidetes ratio was significantly higher(P<0.05)in positive-RFI steers(p-RFI,low feed efficiency)than in negative-RFI(n-RFI,high feed efficiency)steers.The differences in bacterial composition from steers with high and low FE were mainly associated with members of the families Lachnospiraceae,Ruminococcaceae and Christensenellaceae,as well as the genus Prevotella.Archaeal community richness was lower(P<0.05)in p-RFI than in n-RFI steers and the genus Methanobrevibacter was either increased or exclusive of p-RFI steers.The fungal genus Buwchfawromyces was more abundant in the rumen solid fraction of n-RFI steers(P<0.05)and a highly abundant OTU belonging to the genus Piromyces was also increased in the rumen microbiota of highefficiency steers.However,analysis of rumen fermentation variables and functional predictions indicated similar metabolic outputs for the microbiota of distinct FE groups.Conclusions:Our results demonstrate that differences in the ruminal microbiota of high and low FE Nellore steers comprise specific taxa from the bacterial,archaeal and fungal communities.Biomarker OTUs belonging to the genus Piromyces were identified in animals showing high feed efficiency,whereas among archaea,Methanobrevibacter was associated with steers classified as p-RFI.The identification of specific RFI-associated microorganisms in Nellore steers could guide further studies targeting the isolation and functional characterization of rumen microbes potentially important for the energy-harvesting efficiency of ruminants. | Déborah Romaskevis Gomes Lopes Márcio de Souza Duarte Alex J.La Reau Ibrahim Zuniga Chaves Tiago Antônio de Oliveira Mendes Edenio Detmann Cláudia Braga Pereira Bento Maria Eugênia Zerlotti Mercadante Sarah Figueiredo Martins Bonilha Garret Suen Hilário Cuquetto Mantovani | 2021 | Journal of Animal Science and Biotechnology2021，12，4： | 3 |
| 3 | Paediatric obesity,physical activity and the musculoskeletal system显示文摘 | Shultz SP Anner J Hil s AP | | 0，，05： | 1 |
| 4 | Auditor Liability to Third Parties:An International Focus显示文摘 | Carl Pacini Wil iam Hil ison David Sinason | | 0，，08： | 1 |
| 5 | Combretastatin A -4, an agent that displays potent and selective toxicity toward tumor vasculature显示文摘 | Dark GG Hil SA Prise VE | 1997 | Cancer Res1997，57，： | 1 |
| 6 | C-kit Expression in Pediatric Sol-id Tumors:A Comparative Immunohistochemical Study显示文摘 | Smithey BE Pappo AS Hil DA | | 0，，04： | 1 |
| 7 | PM 2.5 induces acute electrocardiographic alterations in healthy rats显示文摘 | Dolores Helena Rodriguez Ferreira Rivero Carolina Sassaki Geraldo Lorenzi-Filho Paulo Hilário Nascimento Saldiva | 2004 | Environmental Research2004，，2： | 1 |
| 8 | Body size and walking cadence affect lower extremity joint power in children's gait显示文摘 | Shultz SP Hil s AP Sitler MR | | 0，，02： | 1 |
| 9 | Serial cardiac magnetic resonance imaging of injected mesenchymal stem cel s显示文摘 | Hil JM Dick AJ Raman VK | | 0，，08： | 1 |
| 10 | Preparation of porous hydroxyapatite scaf- folds by combination of the gel-casting and polymer sponge methods显示文摘 | Ramay HIL Zhang M | 2003 | Biomaterials2003，24，19： | 1 |
| 11 | Total and partial electron collisional ionization cross sections for Ch4,C2H6,SiH4 and Si2H6 显示文摘 | Chatham H Hils D Robertson R et aI | 1984 | J Chem Phys1984，81，： | 1 |
| 12 | Comparison of late results of percutaneous coronary intervention among stable patients ~< 65 versus > 65 years of age with an occluded infarct related artery (from the Occluded Artery Trial) 显示文摘 | Skolnick AH Reynolds HIL White HD | 2012 | Am J Cardiol2012，109，5： | 1 |
| 13 | Modification of a whole room indirect calorimeter for measurement of rapid changes in energy expenditure显示文摘 | Sun M Reed GW Hil JO | | 0，，06： | 1 |
| 14 | SANEX-BTP process development studies显示文摘 | Hil C Guilaneux D Berthon L | | 0，，1： | 1 |
| 15 | A prospective,randomised,control ed trial of the use of drains in total hip arthroplasty显示文摘 | Walmsley PJ Kel y MB Hil RM | | 0，，87： | 1 |
| 16 | Preparation of purified acylglycerols of eicosapentaenoic acid and do- cosahexaenoic acid and their re - esterification with conju- gated linoleic acid 显示文摘 | TORRES C F NETYEKOVEN T J HIL C G | 2003 | Enzyme Microb Tech2003，32，： | 1 |
| 17 | 6,6'-bis(5,5,5,8-tetramethyl-5,6,7,8-tetrahydro-benzo[1,2,4]triazin-3-yl)[2,2']bipyridine,an effective extracting agent for the separation of americium(III) and curium(III) from the lanthanides显示文摘 | Geist A Hil C Modolo G | | 0，，04： | 1 |
| 18 | Laser treatment of primary ring shaped epithelial iris cyst显示文摘 | Bron AJ Wilson CB Hil AR | 1984 | Br J Ophthalmol1984，68，： | 1 |
| 19 | Effects of aspirin on nitric oxide formation and de novo protein synthesis by RINm5F cellls and islets显示文摘 | Kwon G Hil JR Corbett JA | 1997 | Mol Pharmacol1997，52，3： | 1 |
| 20 | A method for measuring mechanical work and work efficiency during human activities显示文摘 | Sun M Hil JO | | 0，，03： | 1 |
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