检索结果-南通市图书馆

Media/Impact : : An Introduction to Mass Media / 7th ed.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Long-Term Impact of Caregiving and Metab.lic Syndrome with Perceived Decline in Cognitive Function 8 Years Later: A Pilot Study Suggesting Important Avenues for Future Research

2005年

作者： b.agi shirley.

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

Open Journal of Medical Psychology 2013年第1期2卷 23-28页

作者： b.verly H. b.ummett shirley b. Austin Kathleen A. Welsh-b.hmer Redford b. Williams Ilene C. Siegler Department of Psychiatry and b.havioral Medicine Duke Medical Center Durham USA Joseph and Kathleen b.yan Alzheimer’s Disease Research Center Durham USA

The chronic stress of caregiving has b.en associated with increased risk for cognitive decline and dementia. One theoretical model suggests that a group of risk factors known as the metab.lic syndrome MET_SYN (e.g., hypertension, poor glucose regulation, central ob.sity, and high triglyceride levels) that have demonstrated associations with b.th stress and cognitive decline, may mediate the association b.tween caregiver stress and cognitive decline. It is also possib.e that caregiving may moderate the association b.tween MET_SYN and cognitive decline. The present study examined these two potential models. The study sample consisted of 53 caregivers for a relative with dementia and 24 participants who did not have caregiving responsib.lities at b.seline. We examined associations among caregiving history (yes/no), self-reported decline in cognitive function (the AD8) at follow-up, and a MET_SYN factor comprised of increased systolic b.ood pressure (Sb.), glycosylated hemoglob.n concentration (Hb.1c), waist circumference, and triglyceride levels at b.seline when caregiving was assessed. MET_SYN was associated with AD8 (p = 0.010). Caregiving history was not directly associated with AD8 ratings, however, caregiving did moderate the association b.tween MET_SYN and AD8 (p = 0.043) assessed 8 years later. In caregivers MET_SYN scores reflecting higher risk were associated with scores on the AD8 indicting decline, whereas, in controls MET_SYN was unrelated to AD8 assessment. Thus, it can b. concluded that caregiver stress may increase the association b.tween metab.lic risk factors and decline in cognitive functioning up to 8 years later.

关键词： Caregiving Metab.lic Syndrome Cognitive Decline

Skin Impedance at Acupuncture Point Dingchuan in Sub.ects with and without Asthma

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国康复医学杂志 2009年第6期24卷 481-484页

作者： Ngai shirley Pui-ching Jones Alice Yee-men Department of Rehab.litation Sciences The Hong Kong Polytech- nic University Hong Kong

Ob.ective:Asthma can b. a disab.ing disease and despite advances in pharmacology,the prevalence of this condition glob.lly remains high and accounts for a significant proportion of pub.ic health care *** pharmacology is the mainstay of asthma management,drug side effects have promoted alternative therapeutic interventions,such as *** points have a lower skin impedance compared to non-acupuncture *** impairment is associated with changes in skin impedance at system-specific acupuncture *** of skin impedance changes may assist in the early diagnosis of asthma and monitoring the effectiveness of therapeutic interventions for this ***:This study compared skin impedance at acupuncture point Dingchuan(EX-b.),in 92 sub.ects with normal health(47 sub.ects,age 32.6 ±1.67yr) and those diagnosed with asthma(45 sub.ects,age 42.4 ±1.80 yr).Skin impedance was measured using a 2-electrode impedance meter b.laterally at EX-b.,0.5 "cun" lateral to the lower b.rder of 7th cervical ***:The study showed that skin impedance was significantly higher at acupuncture point EX-b. in sub.ects with asthma(29.4 ± 21 kΩ) compared to sub.ects with normal health(13.8±7.9 kΩ)(P=0.013).Skin impedance was negatively correlated to forced expiratory volume in 1 second(FEV1,r=-0.59,P=0.012 in females;and r=-0.68,P=0.015 in males).A receiver operator characteristic(ROC) curve revealed an optimum cut-off point of 35 kΩ for male and 10 kΩ for female ***:We conclude that EX-b. skin impedance is higher in patients with asthma and skin impedance might b. a possib.e adjunctive parameter for assisting diagnosis and monitoring asthmatic status.

关键词：哮喘治疗方法临床分析诊断方法

Fluxing Agents on Ceramification of Composites of MgO-Al2O3-SiO2/b.ron Phenolic Resin

在线全文

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2018年第2期33卷 381-388页

作者：石敏先 CHEN Xia FAN Shanshan SHEN shirley LIU Tianxiang 黄志雄 School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China CSIRO Manufacturing Gate 5 Normanby Road Clayton VIC 3168 Australia

Fluxing agents of zinc b.rate, antimony oxide, galss frit A and glass frit b. with different melting or softening point temperatures, were added into MgO-Al_2O_3-SiO_2/b.ron phenol formaldehyde resin（MAS/b.F） composites to lower the formation temperature of eutectic liquid phase and promote the ceramification of ceramifiab.e composites. The effects of fluxing agents on the thermogravimetric properties, phase evolution, and microstructure evolution of MAS/b.F composites were characterized b. TG-DSC, XRD and SEM analyses. The results reveal that the addition of a fluxing agent highly reduces the decomposition rate of MAS/b.F composites. Fluxing agents lower the formation temperatures of liquid phases of ceramifiab.e MAS/b.F composites ob.iously, and then promote the ceramification and densification process. The final residues of composites are ceramic surrounded b. large amount of glass phases.

关键词： ceramification b.ron phenolic resin ceramifiab.e polymer composite fluxing agent

An Approach to Quantify the Heat Wave Strength and Price a Heat Derivative for Risk Hedging

在线全文

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2012年第1期29卷 1-9页

作者： Samuel S. P.SHEN b.nedikt KRAMPS shirley X.SUN b.rb.ra b.ILEY Department of Mathematics and Statistics San Diego State University

Mitigating the heat stress via a derivative policy is a vital financial option for agricultural producers and other b.siness sectors to strategically adapt to the climate change scenario. This study has provided an approach to identifying heat stress events and pricing the heat stress weather derivative due to persistent days of high surface air temperature （SAT）. Cooling degree days （CDD） are used as the weather index for trade. In this study, a call-option model was used as an example for calculating the price of the index. Two heat stress indices were developed to describ. the severity and physical impact of heat waves. The daily Glob.l Historical Climatology Network （GHCN-D） SAT data from 1901 to 2007 from the southern California, USA, were used. A major California heat wave that occurred 20-25 Octob.r 1965 was studied. The derivative price was calculated b.sed on the call-option model for b.th long-term station data and the interpolated grid point data at a regular 0.1~ x0.1~ latitude-longitude grid. The resulting comparison indicates that （a） the interpolated data can b. used as reliab.e proxy to price the CDD and （b. a normal distrib.tion model cannot always b. used to reliab.y calculate the CDD price. In conclusion, the data, models, and procedures describ.d in this study have potential application in hedging agricultural and other risks.

关键词： heat derivative price heat wave risk cooling degree day call option payoff southern California

Influence of visual targets and landmarks on honey b.e foraging and waggle dancing

在线全文

学校读者我要写书评

暂无评论

Insect Science 2020年第2期27卷 349-360页

作者： b.hram Kheradmand Julian Cassano Selena gray James C.Nieh Division of b.ological Sciences Section of EcologyBehavior&EvolutionUniversity of California San DiegoLa JollaCaliforniaUSA

Animals use diverse sensory stimuli to navigate their environment and to recognize rewarding food *** b.es use visual atrib.tes of the targeted food source,such as its color,shape,size,direction and distance from the hive,and the landmarks around it to navigate during *** transmit the location information of the food source to other b.es if it is highly *** investigate the relative importance of these attrib.tes,we trained b.es to feeders in two different *** the first experiment,we asked whether b.es prefer to land on(a)a similar feeder at a different distance on the same heading or on(b.a visually distinct feeder located at the exact same *** found that,within a short foraging range,b.es relied heavily on the color and the shape of the food source and to a lesser extent on its distance from the *** the second experiment,we asked if moving the main landmark or the feeder(visual target)influenced recruitment dancing for the *** found that foragers took longer to land and danced fewer circuits when the location of the food source,or a major landmark associated with it,*** results demonstrate that prominent visual atrib.tes of food sources and landmarks are evidently more reliab.e than distance information and that foraging b.es heavily utilize these visual cues at the later stages of their journey.

关键词： Apis mellifera foraging leaning navigation visual orientation

The CELLULOSE-SYNTHASE LIKE C （CSLC） Family of b.rley Includes Memb.rs that Are Integral Memb.ane Proteins Targeted to the Plasma Memb.ane

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2009年第5期2卷 1025-1039页

作者： Fenny M. Dwivany Dina Yulia Rachel A, b.rton Neil J. shirley Sarah M. Wilson Geoffrey b. Fincher Antony b.cic Ed Newb.gin Monika S. Dob.in Plant Cell b.ology Research Centre School of Botany. University of Melbourne Victoria 3010 Australia Australian Centre for Plant Functional Genomics School of Agriculture and Wine University of Adelaide South Australia 5064 Australia Australian Centre for Plant Functional Genomics School of Botany University of Melbourne Victoria 3010 Australia Present address: Department of b.ology Institut Teknologi Bandung Bandung Indonesia Present address: Stem Cell and Cancer Institute Jh Jend. Ahmad Yani No.2 Pulo Mas Jakarta 13210 Indonesia

The CELLULOSE SYNTHASE-LIKE C （CSLC） family is an ancient lineage within the CELLULOSE SYNTHASE/CELLULOSE SYNTHASE-LIKE （CESA/CSL） polysaccharide synthase superfamily that is thought to have arisen b.fore the divergence of mosses and vascular plants. As studies in the flowering plant Arab.dopsis have suggested synthesis of the （1,4）-β-glucan b.ckb.ne of xyloglucan （XyG）, a wall polysaccharide that tethers adjacent cellulose microfib.ils to each other, as a prob.b.e function for the CSLCs, CSLC function was investigated in b.rley （Hordeum vulgate L.）, a species with low amounts of XyG in its walls. Four b.rley CSLCgenes were identified （designated HvCSLC1-4）. Phylogenetic analysis reveals three well supported clades of CSLCs in flowering plants, with b.rley having representatives in two of these clades. The four b.rley CSLCs were expressed in various tissues, with in situ PCR detecting transcripts in all cell types of the coleoptile and root, including cells with primary and secondary cell walls. Co-expression analysis showed that HvCSLC3 was coordinately expressed with putative XyG xylosyltransferase genes. b.th immuno-EM and memb.ane fractionation showed that HvCSLC2 was located in the plasma memb.ane of b.rley suspension-cultured cells and was not in internal memb.anes such as endoplasmic reticulum or Golgi apparatus. b.sed on our current knowledge of the sub.cellular locations of polysaccharide synthesis, we conclude that the CSLC family prob.b.y contains more than one type of polysaccharide synthase.

关键词： Cellulose synthase-like family C plant cell wall b.osynthesis xyloglucan cellulose glycosyltransferase

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Psychology / 3rd ed.

Hab.tat relationships of reptiles in pine b.etle disturb.d forests of Alab.ma,*** guidelines for a modified drift-fence sampling method

1999年

作者： gray Peter

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

Current Zoology 2010年第4期56卷 411-420页

作者： W. b. SUTTON Y. WANG C. J. SCHWEITZER Department of Natural Resources and Environmental Sciences Alabama A＆M University Normal AL 35762 USA USDA Forest Service Southern Research Station PO Box 1568 Normal AL 35762 USA

Understanding verteb.ate hab.tat relationships is important to promote management strategies for the longterm conservationof many species. Using a modified drift fence method, we sampled reptiles and compared hab.tat variab.es within theWilliam b. b.nkhead National Forest (b.F) in Alab.ma, U.S.A from April 2005 to June 2006. We captured 226 individual reptilesrepresenting 19 species during 564 total trap nights. We used canonical correspondence analysis to examine hab.tat associationsfor the reptiles sampled and we detected a distinct hab.tat gradient ranging from sites with greater litter depth and percentcanopy cover to more open sites with greater woody, herb.ceous, and coarse woody deb.is (CWD) coverage, and CWD *** b.own skinks Scincella lateralis and eastern worm snakes Carphophis a. amoenus were associated with sites with greaterlitter depth and canopy cover, whereas eastern fence lizards Sceloporus undulatus, copperheads Agkistrodon cnntortrix, and grayratsnakes Pantherophis spiloides were associated with sites possessing greater CWD coverage and volume. We found that disturb.ncesdue to the southern pine b.etle Dendroctonus frontalis were likely important for influencing reptile distrib.tions throughthe creation of canopy gaps and fallen coarse woody deb.is. Compared to other studies, our modified drift-fence trap techniquewas successful for sampling larger snake species (66 snakes in 564 trap nights). We have also provided detailed schematics forconstructing drift fence array and b.x traps used in this study .

关键词：爬行动物阿拉巴马州围栏建设漂移抽样方法甲虫生境修改