|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 连栽杉木(Cunninghamia lancelata(Lamb) Hook)林中树桩分解过程中的化学组分变化趋势显示文摘采用以空间代替时间的方法,对连栽杉木(Cunninghamialancelata(Lamb)Hook)人工林中采伐剩余树桩的分解过程进行了研究.根据Olson的分解模型,计算出连栽杉木纯林中树桩的分解速率为0.02695,树桩在分解过程中的前2年是一个氮素增加积累过程,当杉木树桩的C/N在463.2±27.3时开始净氮释放.树桩磷含量的变化与氮变化模式相类似,但钾的表现不同,钾的含量在树桩分解过程中一直是单调降低.利用固体高分辨核磁共振技术结合魔角旋转(MAS)和交叉极化(CP)技术,研究了杉木树桩的腐殖化过程及碳结构的变化.树桩中由纤维素和半纤维素组成的多糖碳和乙缩醛被首先分解,而由蜡质和表皮素等化合物组成的烷基碳,由酚类、木质素、单宁和石蜡等化合物组成的芳香族碳,及由酯、有机酸、酮和醛等化合物组成的羧基碳的分解速度较多糖碳和乙缩醛慢. | 黄志群 徐志红 Sue Boyd David Williams | 2005 | 科学通报2005，50，21： | 15 |
| 2 | Optimizing dietary lipid use to improve essential fatty acid status and reproductive performance of the modern lactating sow:a review显示文摘Dietary lipid supplementation benefits the prolific and high-producing modern lactating sow. A comprehensive review of recent studies showed that lipid supplementation increases average daily energy intake, which is partitioned for lactation as indicated by greater milk fat output and improved litter growth rate. Recent compelling findings showed that addition of particular lipids during lactation improved the subsequent reproductive outcome of sows. Such benefits were related to the level of dietary essential fatty acids(EFA, linoleic acid, C18:2n-6; and α-linolenic acid, C18:3n-3) during lactation. Lactation diets without supplemental EFA resulted in a pronounced negative balance(intake minus milk output) of linoleic(-25.49 g/d) and α-linolenic acid(-2.75 g/d); which compromised sow fertility(farrowing rate < 75 % and culling rates > 25 % of weaned sows). This phenomenon seems to be increasingly important with advancing sow age because of a progressive reduction of body EFA pool over successive lactations. The net effect of supplemental EFA during lactation was to create a positive EFA balance, which improved the subsequent reproduction of sows. Adequate linoleic acid intake improved the proportion of sows that farrowed in the subsequent cycle(Farrowing rate(%) = [(-1.5 × 10^(-3)× linoleic acid intake(g/d)~2) +(0.53 × linoleic acid intake(g/d)) +(45.2)]; quadratic P = 0.002, R^2= 0.997, RMSE = 0.031). In addition, increasing linoleic acid intake increased the number of pigs born in the subsequent cycle(total pigs born(n) = [(9.4 × 10^(-5)× linoleic acid intake(g/d)~2) +(0.04 × linoleic acid intake(g/d)) +(10.94)]; quadratic P = 0.002, R^2= 0.997, RMSE = 0.031). Supplemental α-linolenic acid resulted in a rapid return to estrus(sows bred: sows weaned = 94.2 %; wean-to-estrus interval = 4.0 d) and achieved a high retention of pregnancy(sows pregnant: sows bred = 98 %). Collectively, we conclude that a minimum dietary intake of10 g/d of α-linolenic acid, simultaneous with a minimum of 125 g/d of linoleic acid should be provided to ≥ 95 % of the sows; thereby, achieving a maximum sow reproductive efficiency through multiple mechanisms that include rapid return to estrus, high maintenance of pregnancy and large subsequent litter size in mature sows, that appear to be susceptible to EFA deficiency. | David S.Rosero R.Dean Boyd Jack Odle Eric van Heugten | 2016 | Journal of Animal Science and Biotechnology2016，7，3： | 8 |
| 3 | Chemical composition of decomposing stumps in successive rotation of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) plantations显示文摘Decomposition of stumps in successive rotation of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) plantations was studied using a chronosequence approach. The results showed that decomposition rate constant of Chi- nese fir stump was 0.02695 as calculated from Olson’s model. The N content of stump increased during the first two-year decomposition. When the dead stump C/N ratio was 463.2 ± 27.3, the stumps started to release N. The pattern of P release was similar to that for N. However, K content of stumps showed a consistent declining trend over time during the whole decomposition. 13C nuclear magnetic resonance spec- troscopy with cross polarization and magic-angle spinning (13C CPMAS-NMR) was used to analyse organic carbon (C) components in decomposing stumps. The 13C CPMAS-NMR spectra of stumps displayed that stump was dominated by cellulose and hemicellulose. The spectra also showed the ac- cumulation of intensity in alkyl C, aromatic C, and carboxyl C spectral regions, which was expected as the labile cellulose and hemicellulose components in O-alkyl C spectral region were selectively decomposed first. | HUANG Zhiqun XU Zhihong BOYD Sue WILLIAMS David | 2005 | Chinese Science Bulletin2005，50，22： | 3 |
| 4 | High-Resolution Peripheral Quantitative Computed Tomography for the Assessment of Bone Strength and Structure: A Review by the Canadian Bone Strength Working Group显示文摘 | Angela M. Cheung Jonathan D. Adachi David A. Hanley David L. Kendler K. Shawn Davison Robert Josse Jacques P. Brown Louis-Georges Ste-Marie Richard Kremer Marta C. Erlandson Larry Dian Andrew J. Burghardt Steven K. Boyd | 2013 | Current Osteoporosis Reports2013，，2： | 2 |
| 5 | A 640 × 512 CMOS image sensor with ultrawide dynamic range floating-point pixel-level ADC 显示文摘 | Yang David X D EI Gamal Abbas Fowler Boyd Tian Hui | 1999 | IEEE Journal of Solid-state Circuits1999，34，12： | 1 |
| 6 | A comparison of the characteristics and fate of Barrows Goldeneye and Bufflehead nests in nest boxes and natural cavities 显示文摘 | MATTHEW DAVID SEAN BOYD | 2002 | The Condor2002，104，3： | 1 |
| 7 | Monoclonal Antibody-Mediated Targeting of CD123, IL-3 Receptor α Chain, Eliminates Human Acute Myeloid Leukemic Stem Cells显示文摘 | Liqing Jin Erwin M. Lee Hayley S. Ramshaw Samantha J. Busfield Armando G. Peoppl Lucy Wilkinson Mark A. Guthridge Daniel Thomas Emma F. Barry Andrew Boyd David P. Gearing Gino Vairo Angel F. Lopez John E. Dick Richard B. Lock | 2009 | Cell Stem Cell2009，，1： | 1 |
| 8 | Nonleaded brass-a summary of performance and costs 显示文摘 | SANDVIG A M SIMONI T EDWARDS M DAVID H BOYD G KIRMEYER G | 2009 | Journal/American Water Works Association2009，101，7： | 1 |
| 9 | Clinical Pharmacokinetics of Pregabalin in Healthy Volunteers显示文摘 | Howard N. Bockbrader Louis L. Radulovic Edward L. Posvar James C. Strand Christine W. Alvey Janice A. Busch Edward J. Randinitis Brian W. Corrigan George M. Haig Rebecca A. Boyd David L. Wesche | 2010 | Journal of Clinical Pharmacology2010，，8： | 1 |
| 10 | A Phase 1 study of the safety, pharmacokinetics and anti-leukemic activity of the anti-CD123 monoclonal antibody CSL360 in relapsed, refractory or high-risk acute myeloid leukemia显示文摘 | Simon Z. He Samantha Busfield David S. Ritchie Mark S. Hertzberg Simon Durrant Ian D. Lewis Paula Marlton Andrew J. McLachlan Ian Kerridge Kenneth F. Bradstock Glen Kennedy Andrew W. Boyd Trina M. Yeadon Angel F. Lopez Hayley S. Ramshaw Harry Iland Simone | 2015 | Leukemia & Lymphoma2015，，： | 1 |
| 11 | An Invariant Measures for Finitely Generated Rational Semigroups 显示文摘 | David Boyd | 1999 | Complex Variables and EllipticEquations1999，37，3： | 1 |
| 12 | Sliding Injuries in College and Professional Baseball—A Prospective Study Comparing Standard and Break-Away Bases显示文摘 | David H. Janda Richard Maguire Derek Mackesy Richard J. Hawkins Peter Fowler Joel Boyd | 1993 | Clinical Journal of Sport Medicine1993，，2： | 1 |
| 13 | A comparison of the characteristic and fate of Barrow's Golden eye and Bufflehead nests in nest boxes and natural cavities显示文摘 | MATTHEW R EVANS DAVID B LAND W SEAN BOYD | 2002 | The Condor2002，104，： | 1 |
| 14 | Computerized Continuous Infusion of Intravenous Anesthetic Drugs During Pediatric Cardiac Surgery显示文摘 | Frank H. Kern Ross M. Ungerleider James R. Jacobs John L. Boyd J. G. Reves David Goodman William J. Greeley | 1991 | Anesthesia & Analgesia1991，，4： | 1 |
| 15 | Regenerating the landscape,reconnecting the community显示文摘 | | 2004 | Landscape Architecture2004，，1： | 1 |
| 16 | A cylindrical blackbody solar energy receiver显示文摘 | David A Boyd RyszardGajewski Roderick Swift | 1976 | Solar Energy1976，18，5： | 1 |
| 17 | Asthma in the elderly: Current understanding and future research needs—a report of a National Institute on Aging (NIA) workshop显示文摘 | Nicola A. Hanania Monroe J. King Sidney S. Braman Carol Saltoun Robert A. Wise Paul Enright Ann R. Falsey Sameer K. Mathur Joe W. Ramsdell Linda Rogers David A. Stempel John J. Lima James E. Fish Sandra R. Wilson Cynthia Boyd Kushang V. Patel Charles G. I | 2011 | The Journal of Allergy and Clinical Immunology2011，，3： | 1 |
| 18 | A 640×512 CMOS image sensor with ultra-wide dynamic range floating-point pixel-level ADC显示文摘 | David X D Yang Abbas EI Gamal Boyd Fowler | 1999 | IEEE Journal of Solid Circuit1999，34，12： | 1 |
| 19 | Asthma in the elderly: Current understanding and future research needs—a report of a National Institute on Aging (NIA) workshop显示文摘 | Nicola A. Hanania Monroe J. King Sidney S. Braman Carol Saltoun Robert A. Wise Paul Enright Ann R. Falsey Sameer K. Mathur Joe W. Ramsdell Linda Rogers David A. Stempel John J. Lima James E. Fish Sandra R. Wilson Cynthia Boyd Kushang V. Patel Charles G. I | 2011 | The Journal of Allergy and Clinical Immunology2011，，3： | 1 |
| 20 | Nonleaded brass- A summary of performance and costs 显示文摘 | SANDVIG A M SIMONI T EDWARDS M DAVID H BOYD G KIRMEYER G | 2009 | Journal AWWA2009，101，7： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员