|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Single-atom heterogeneous catalysts based on distinct carbon nitride scaffolds显示文摘Carbon nitrides integrating macroheterocycles offer unique potential as hosts for stabilizing metal atoms due to their rich electronic structure. To date, only graphitic heptazine-based polymers have been studied.Here, we demonstrate that palladium atoms can be effectively isolated on other carbon nitride scaffolds including linear melem oligomers and poly(triazine/heptazine imides). Increased metal uptake was linked to the larger cavity size and the presence of chloride ions in the polyimide structures. Changing the host structure leads to significant variation in the average oxidation state of the metal, which can be tuned by exchange of the ionic species as evidenced by X-ray photoelectron spectroscopy and supported by density functional theory. Evaluation in the semi-hydrogenation of 2-methyl-3-butyn-2-ol reveals an inverse correlation between the activity and the degree of oxidation of palladium, with oligomers exhibiting the highest activity. These findings provide new mechanistic insights into the influence of the carbon nitride structure on metal stabilization. | Zupeng Chen Evgeniya Vorobyeva Sharon Mitchell Edvin Fako Núria López Sean M.Collins Rowan K.Leary Paul A.Midgley Roland Hauert Javier Pérez-Ramírez | 2018 | National Science Review2018，5，5： | 4 |
| 2 | 重症监护室内患者睡眠的自评和护士评估:一项探索性描述研究显示文摘目的:描述ICU患者的睡眠自评报告,检测患者的睡眠自评报告和床旁护士的睡眠评估报告之间的关系;描述患者建议的促进睡眠的对策。方法:对2014-2015年间连续纳入的能进行交流的成年患者,进行了探索性描述研究。患者睡眠情况采用理查兹-坎贝尔(Richards-Campbell)睡眠问卷(评分范围为0~100 mm;得分越高,表明睡眠质量越好)进行自评,同时护士以5级递进形式记录患者睡眠情况,进行评估。要求患者每日描述辅助或妨碍睡眠的因素。研究已获得伦理委员会批准。进行描述性统计分析[中位数(四分位间距)];用Spearman等级相关分析相关关系,用Kruskal-Wallis检验进行差异检验;P<0.05时,认为差异有显著性。结果:151名受试者纳入研究,年龄为60(46~71)岁,ICU停留时间为4(2~9)天,完成了356份睡眠自评报告。自我感知的睡眠质量为46(26~65)mm。睡眠的患者自评和护士评估之间存在中度相关(Spearman等级相关系数为0.39~0.50;P<0.001)。经患者认可的改善睡眠的对策包括适当的止痛和镇静药物,平和舒适的环境,以及集群护理、耳塞等物理措施。结论:患者在ICU期间,完成睡眠自评的中位数为2(1~3)日,表明常规使用自评是可行的。自评报告显示患者的睡眠质量低。在患者自评的多种辅助或妨碍睡眠的因素中,环境因素和影响患者舒适度的因素是最常见的。应实施针对这些因素的干预,以改善患者睡眠状况。 | Leanne M.Aitken Rosalind Elliott Marion Mitchell Chelsea Davis Bonnie Macfarlane Amanda Ullman Krista Wetzig Ashika Datt Sharon McKinley | 2017 | 中国护理管理2017，17，4： | 3 |
| 3 | Prospectives for bio-oil upgrading via esterification over zeolite catalysts显示文摘 | Maria Milina Sharon Mitchell Javier Pérez-Ramírez | 2014 | Catalysis Today2014，，： | 1 |
| 4 | Genomic typing of Escherichia coli O157:H7 by semi-automated fluorescent AFLP analysis显示文摘 | Shaohua Zhao Sharon E Mitchell Jianghong Meng | 2000 | Microbes and Infection2000，2，： | 1 |
| 5 | Is bacterial vaginosis a stronger risk factor for preterm birth when it is diagnosed earlier in gestation?显示文摘 | Mark A. Klebanoff Sharon L. Hillier Robert P. Nugent Cora A. MacPherson John C. Hauth J. Christopher Carey Margaret Harper Ronald J. Wapner Wayne Trout Atef Moawad Kenneth J. Leveno Menachem Miodovnik Baha M. Sibai J. Peter VanDorsten Mitchell P. Dombrows | 2005 | American Journal of Obstetrics and Gynecology2005，，2： | 1 |
| 6 | The Pediatric Investigators Collaborative Network on Infections in Canada Study of Predictors of Hospitalization for Respiratory Syncytial Virus Infection for Infants Born at 33 Through 35 Completed Weeks of Gestation显示文摘 | Barbara J. Law Joanne M. Langley Upton Allen Bosco Paes David S. C. Lee Ian Mitchell John Sampalis Hervé Walti Joan Robinson Karel O’Brien Carina Majaesic Georges Caouette Lyne Frenette Nicole Le Saux Brian Simmons Sharon Moisiuk Koravanagattu Sankaran Ce | 2004 | The Pediatric Infectious Disease Journal2004，，9： | 1 |
| 7 | An Analysis of Genetic Diversity Across the Maize Genome Using Microsatellites显示文摘 | Yves Vigouroux Sharon Mitchell Yoshihiro Matsuoka | 2005 | Genetics2005，169，： | 1 |
| 8 | Development of a set of PCR-based anchor markers encompassing the tomato genome and evaluation of their usefulness for genetics and breeding experiments显示文摘 | Anne Frary Yimin Xu Jiping Liu Sharon Mitchell Eloisa Tedeschi Steven Tanksley | | 0，，： | 1 |
| 9 | Genotyping-by-sequencing of Brassica oleracea vegetables reveals unique phylogenetic patterns, population structure and domestication footprints显示文摘Brassica oleracea forms a diverse and economically significant crop group.Improvement efforts are often hindered by limited knowledge of diversity contained within available germplasm.Here,we employ genotyping-by-sequencing to investigate a diverse panel of 85 landrace and improved B.oleracea broccoli,cauliflower,and Chinese kale entries.Ultimately,21,680 high-quality SNPs were used to reveal a complex and admixed population structure and clarify phylogenetic relationships among B.oleracea groups.Each broccoli landrace contained,on average,8.4 times as many unique alleles as an improved broccoli and landraces collectively represented 81%of all broccoli-specific alleles.Commercial broccoli hybrids were largely represented by a single subpopulation identified within a complex population structure.Greater allelic diversity in landrace broccoli and 96.1%of SNPs differentiating improved cauliflower from landrace cauliflower were common to the larger pool of broccoli germplasm,supporting a parallel or later development of cauliflower due to introgression events from broccoli.Chinese kale was readily distinguished by principal coordinate analysis.Genotyping was accomplished with and without reliance upon a reference genome producing 141,317 and 20,815 filtered SNPs,respectively,supporting robust SNP discovery methods in neglected or unimproved crop groups that lack a reference genome.This work clarifies the population structure,phylogeny,and domestication footprints of landrace and improved B.oleracea broccoli using many genotyping-by-sequencing markers.Additionally,a large pool of genetic diversity contained in broccoli landraces is described which may enhance future breeding efforts. | Zachary Stansell Katie Hyma Jonathan Fresnedo-Ramírez Qi Sun Sharon Mitchell Thomas Björkman Jian Hua | 2018 | Horticulture Research2018，5，1： | 1 |
| 10 | Conservation and changes:a comparsion of in situ and ex situ conservation of Jala maize germplasm显示文摘 | ELIZABETH B RICE MARGARET E SMITH SHARON E MITCHELL | 2006 | Crop Sci2006，46，： | 1 |
| 11 | Caloric restriction显示文摘 | John R. Speakman Sharon E. Mitchell | 2011 | Molecular Aspects of Medicine2011，，3： | 1 |
| 12 | ob Gene Expression and Secretion of Leptin Following Differentiation of Rat Preadipocytes to Adipocytes in Primary Culture显示文摘 | Sharon E. Mitchell William D. Rees Laura J. Hardie Nigel Hoggard Mohammad Tadayyon Jonathan R.S. Arch Paul Trayhurn | 1997 | Biochemical and Biophysical Research Communications1997，，2： | 1 |
| 13 | An analysis of genetic diveityacross the maize genome using microsatellites 显示文摘 | Yves Vigouroux Sharon Mitchell | 2005 | Genetics2005，169，： | 1 |
| 14 | Whole Body Vibration:The Effect of Position and Frequency on Perceived Exertion in Healthy,Active Adults显示文摘Whole Body Vibration(WBV)is a new exercise trend in fitness and performance enhancement.WBV platforms oscillate over a range of frequencies and amplitudes;however no study to date has examined the experience of perceived exertion with differences in vibration frequency and static or dynamic body position,nor examined the difference between sexes based on position and frequency during WBV.The purpose of this study was to assess the effects of position and frequency on perceived exertion during WBV in healthy,active adults.A convenience sample of 39 healthy young adults who participated in moderated exercise was blinded and randomly allocated to six WBV conditions composed of different frequency and position combinations.The participants received instruction,provided informed consent,participated in a warm-up session,and then reported rating of perceived exertion for each WBV condition.A 2×3 within-subjects multivariate approach ANOVA was conducted against an alpha of 0.05.A statistically significant main effect of position(p=0.004)and significant main effect of frequency(p=0.025)were found.Significant marginal means were found between the frequencies of 0 Hz and 50 Hz(p=0.007).Statistically significant differences were found between sexes for all combinations. | Annette Karim Elizabeth Lemos Huynh Nguyen Katy Mitchell Toni Roddey Sharon Olson | 2019 | Journal of Health Science2019，7，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员