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| 1 | Quantitative analysis of ruminal methanogenic microbial populations in beef cattle divergent in phenotypic residual feed intake(RFI)offered contrasting diets显示文摘Background:Methane(CH_4) emissions in cattle are an undesirable end product of rumen methanogenic fermentative activity as they are associated not only with negative environmental impacts but also with reduced host feed efficiency.The aim of this study was to quantify total and specific rumen microbial methanogenic populations in beef cattle divergently selected for residual feed intake(RFI) while offered(i) a low energy high forage(HF) diet followed by(ii) a high energy low forage(LF) diet.Ruminal fluid was collected from 14 high(H)and 14 low(L) RFI animals across both dietary periods.Quantitative real time PCR(qRT-PCR) analysis was conducted to quantify the abundance of total and specific rumen methanogenic microbes.Spearman correlation analysis was used to investigate the association between the relative abundance of methanogens and animal performance,rumen fermentation variables and diet digestibility.Results:Abundance of methanogens,did not differ between RFI phenotypes.However,relative abundance of total and specific methanogen species was affected(P< 0.05) by diet type,with greater abundance observed while animals were offered the LF compared to the HF diet.Conclusions:These findings suggest that differences in abundance of specific rumen methanogen species may not contribute to variation in CH_4 emissions between efficient and inefficient animals,however dietary manipulation can influence the abundance of total and specific methanogen species. | Ciara A Carberry David A Kenny Alan K Kelly Sinead M Waters | 2014 | Journal of Animal Science and Biotechnology2014，5，4： | 6 |
| 2 | 活性氧化铝除氟研究显示文摘针对目前活性氧化铝饮水除氟中存在的问题,进行了生产性试验研究,通过采用原水投加CO_2气体降低pH值、小颗粒活性氧化铝、大流量短历时的NaOH循环再生法等新技术,提高了活性氧化铝的吸附容量和处理水的能力,克服滤料板结和假疲劳,除氟效果稳定可靠,水质好,再生时间短,用药省,降低了基建投资和运转费用。 | North China Municipal Engineering Design Institute A full-scale plant was set up for studying the existing problems on the fluoride removal from drinking water by activated alumina. Some new methods was adopted,such as the addition of CO2to reduce water pH value,the use of small-sized activated alumina,and the employment of a cyclic regeneration at large flow rate with NaOH as regenerant,which result in the improvement of adsorption capacity of activated alumina and treatment capacity, the elimination of the hardening of filtration materials and false fatigue,stable and reliable effectiveness,good quality in water,short regeneration time,small consumption of regenerant. And then the capital and openational costs were reduced. | 1989 | 中国给水排水1989，5，3： | 5 |
| 3 | Using soil surface gray level to determine surface soil water content显示文摘How to determine surface soil water content(SWC) quickly and accurately is fundamental in studying eco-hydrological processes and their modeling.Here we use laboratory experiments to determine surface SWC using soil surface gray level(SGL) values.A negatively exponential relationship exists between SGL and SWC,i.e.,SGL increases with the decrease of SWC.SGL can be estimated based on initial SGL value(surface gray level when SWC=0),SWC,and a surface roughness coefficient characterized by mean soil particle size.The variation range of SGL was larger than that of SWC,indicating that changes in SWC were enhanced in SGL,and that SGL would thus be sensitive to changes in soil water.At the 95% confidence level,SWC can be determined by using the relationship between SWC and SGL established by the experiments.The determination of SWC has a high precision when SWC was between dry and saturated. | ZHU YuanJun1,2,WANG YunQiang1,2 & SHAO MingAn1,2 1 State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau,Institute of Soil and Water Conservation,Northwest A & F University,Yangling 712100,China 2 Institute of Soil and Water Conservation,Chinese Academy of Sciences & Ministry of Water Resources,Yangling 712100,China | 2010 | Science China Earth Sciences2010，53，10： | 2 |
| 4 | Long-term prognosis of patients with variant angina 显示文摘 | Walling A Waters DD Miler D | 1987 | Circulation1987，76，： | 2 |
| 5 | Aggregate hierarchy in soils显示文摘 | Oades J M Waters A G | 1991 | Australia Journal of Soil Science1991，29，： | 2 |
| 6 | Effects of estradiol on substrate turnover during exercise in amenorrheic females显示文摘 | Ruby B C Robergs R A Waters D L | 1997 | Med Sci Sports Exerc1997，29，9： | 1 |
| 7 | Biased gene conversion is not occurring among rDNA repeats in the Brassica triangle 显示文摘 | WATERS E R SCHAAL B A | 1996 | Genome1996，39，1： | 1 |
| 8 | Detection of au- toantibodies to recombinant mitochondrial proteins in pa tients with primary biliary cirrhosis显示文摘 | Vande Water J Cooper A Surch CD | 1989 | N Engl J Med1989，320，： | 1 |
| 9 | On the force transmissibility of a vibration i- solator with quasi-zero-stiffness显示文摘 | CarreUa A Brennan M J Kovacic I Waters T P | 2009 | Journal of Sound and Vibration2009，322，45： | 1 |
| 10 | QF-PCR as a stand-alone test for prenatal samples: the first 2 years' experience in the Lon- don region显示文摘 | Hills A Donaghue C Waters J | 2010 | Prenat Diagn2010，30，6： | 1 |
| 11 | Echinoderm faunas of the Hon-gguleleng Formation,Late Devonian(Famennian),Xinjiang-uygur Autonomous Region,People's Republic of China显示文摘 | Lane N G Waters J A Maples C G | 1997 | The Paleonto-logical Society Memoir1997，47，： | 1 |
| 12 | Aggregate hierarchy in soils显示文摘 | Oades J M Waters A G | 1991 | Australian Journal of Soil Research1991，29，6： | 1 |
| 13 | Separation of osmium from geological materials by solvent extraction for analysis by thermal ionisation mass spectrometry显示文摘 | Cohen A S Waters F G | | 0，，2： | 1 |
| 14 | An improved, readily available dustfall gauge显示文摘 | Hall D J Waters R A | 1986 | 20(1): 219-2221986，20，1： | 1 |
| 15 | The influence of age on the association between cholesterol and cognitive function显示文摘 | van Vliet P van de Water W de Craen A J | 2009 | Experimental gerontology2009，44，12： | 1 |
| 16 | Significance of positive Stenotrophomonas maltophilia culture in acute respiratory tract infection显示文摘 | Pathmanathan A Waterer GW | 2005 | Eur Respir J2005，25，5： | 1 |
| 17 | UV-Vis microspectroscopy: Probing the initial stages of supported metal oxide catalyst preparation显示文摘 | VAN DE WATER L G A BERGWERFF J A NIJHUIS T A DE JONG K P WECKHUYSEN B M | 2005 | J Am Chem Soc2005，127，14： | 1 |
| 18 | lmmunoreactivity of organic mimeutupes of the En Component of pyruvate dehydrogenates connecting xenobiutics with primary biliary cirrhosis显示文摘 | Long S A Quan C Van De Water J | 2001 | lm munol2001，167，： | 1 |
| 19 | A quadrupling of Famen-man pelmatozoan diversity:new late Devonian blastoids and crinoids from northwest China显示文摘 | Waters J A Maples C G Lane N G | 2003 | Journal of Paleontology2003，77，5： | 1 |
| 20 | Identification and precursor frequency analysis of a common T cell epitope motif in mitochondrial autoantigens in primary biliary cirrhosis显示文摘 | Shimoda S van de Water J Ansari A | 1998 | J Clin Invest1998，102，10： | 1 |
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