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World Journal of AIDS 2014年第2期4卷 249-257页

作者： Chris r. kenyon Jozefien Buyze HIV/STI Unit Institute of Tropical Medicine Antwerp Belgium

Background: The extent of the differential spread of HIV around the world remains incompletely explained. This paper examines the extent to which five explanatory variables (circumcision prevalence, condom usage, STI treatment coverage, number of sex partners, partner concurrency) are correlated with peak HIV prevalence rates at a country level. Methods: We performed linear regression analysis to measure the association between each of the independent variables and the national peak HIV prevalence rates for 15 - 49 years old. results: Our analysis shows a strong positive association between peak HIV prevalence and the prevalence of partner concurrency (rho = 0.853;P = 0.001). There was no association between peak HIV prevalence and circumcision prevalence (rho = 0.118;P = 0.161), condom usage (rho = 0.048;P = 0.794), STI treatment coverage (rho = 0.143;P = 0.136) and number of sex partners (rho = 0.134;P = 0.298) at a global level. There was however a strong negative association between peak HIV prevalence and circumcision prevalence when the analysis was limited to countries within sub Saharan Africa (rho = -0.659;P = 0.000). Sub Saharan Africa had the second and third highest circumcision rates in the world when the circumcision prevalence thresholds were set at 80% and 20% respectively. Conclusions: Differences in the prevalence of circumcision likely influence differential peak HIV prevalence within sub Saharan Africa but are implausible causes for the higher HIV prevalence in this region. The close association found between concurrency and HIV prevalence requires replication in further studies.

关键词： HIV Sexual Network Epidemiology Peak HIV Prevalence Ecological

Effect of high and low pasture allowance during pregnancy on ewe lamb pregnancy performance

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Effect of high and low pasture allowance during pregnancy on...

Degradation and resynthesis of chlorophyll during increased oxidative stress and prolonged darkness differ between annual and perennial flax(Linum L.)

ⅩⅪ International Grassland Congress and the Ⅷ International rangeland Congress

作者： P.r.kenyon F.J.Mulvaney S.T.Morris D.M.West Institute of Veterinary Animal and Biomedical SciencesMassey UniversityPrivate Bag 11-222Palmerston NorthNew Zealand

＜正＞Introduction It is established that breeding ewe lambs（8-9 months of age,hogget） can negatively affect their 18-month liveweight and breeding performance（kenyon et al.2007）.Therefore the aim of any ewe lamb breeding regimen should be to ensure they gain liveweight during their first ***,under housed,concentrate feeding conditions high total

关键词： hogget lamb growth nutrition

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Oil Crop Science 2024年第2期9卷 121-130页

作者： kenyon J. Nisbett Abida Alokozai Su Hyun Elizabeth Ko G. Adam Mott Jason C.L. Browna Department of Biological Sciences University of Toronto ScarboroughTorontoONCanada Department of Cell&Systems Biology University of TorontoTorontoONCanada Centre for the Analysis of Genome Evolution&Function University of TorontoTorontoONCanada

Among plants,there is considerable variation in lifespan:annuals live less than one year,whereas perennials live for several years,with the longest-living perennial having survived 43,600 *** proposed by the Disposable Soma Theory,this lifespan variation among plants likely reflects differential investment of limited energy and nutrient resources,with perennials investing more energy and nutrients into biomolecular maintenance compared to annuals in order to ensure persistence over multiple *** differential investment may be particularly important during periods of exogenous stress,which are known to accelerate biomolecular *** present study evaluated this hypothesis using annual and perennial flax(Linum L.)subjected to two exogenous stressors—increased oxidative stress(i.e.,foliar H2O2spraying)and complete prolonged *** chlorophyll has been shown to exhibit degradation in response to changes in environmental conditions,we utilized changes in chlorophyll levels during and after periods of exogenous stress to evaluate our *** predicted that i)perennials would exhibit a slower rate of chlorophyll degradation during exposure to exogenous stressors compared to annuals,and ii)perennials would exhibit a faster rate of chlorophyll resynthesis following such exposure compared to *** levels before,during,and after exposure to both exogenous stressors were measured in two separate trails,once using image colour analysis and once using *** chlorophyll degradation rates in response to oxidative stress did not differ between annuals and perennials,contrary to our predictions,chlorophyll resynthesis rates following such exposure were significantly higher in perennials,as *** plants were subjected to complete prolonged darkness,chlorophyll degradation rates were significantly lower in perennials than annuals,as predicted;however,when plants were subsequently reintroduced to natural photoperiod,ch

关键词： Ageing Life history Maximum lifespan Oxidative stress Somatic maintenance

初次全膝置换术使用抗生素骨水泥对关节感染微生物类型和耐药性的影响

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临床骨科杂志 2014年第1期17卷 45-45页

作者： Hansen E N Adeli B kenyon r 胡孔足

在欧洲，初次全膝置换术普遍采用初次全膝、全髋置换术，分析术后微生物含抗生素骨水泥；在北美，FDA仅批准感染类型、细菌耐药性。发现使用含抗在感染性全膝翻修术使用含抗生素骨水生素骨水泥对微生物感染类型、细菌耐泥。

关键词：初次全膝置换术抗生素骨水泥细菌耐药性生物类型关节感染感染类型全髋置换术微生物

角膜炎-鱼鳞癣-耳聋(KID)综合征的眼部表现

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世界核心医学期刊文摘（眼科学分册） 2005年第7期1卷 46-46页

作者： Messmer E.M. kenyon K.r. rittinger O. 陈立军 Department of Ophthalmology Ludwig- Maximilians- University Mathildenstrasse 8 D- 80336 Muenchen Germany

Objective: Keratitis- ichthyosis- deafness (KID) syndrome is a rare congenital ectodermal dysplasia characterized by the association of hyperkeratotic skin lesions, moderate to profound sensorineural hearing loss and vascularizing keratitis. Mutations in the GJB2 gene coding for connexin 26, a component of gap junctions in epithelial cells, have been observed in several KID patients. Variable ocular manifestations of the disease in 3 patients with molecular genetically confirmed KID syndrome are reported. Design: retrospective case series. Methods: Clinical examination and molecular genetic analysis for mutations in the GJB2 gene were performed in 3 patients with KID syndrome ages5, 13, and41 years. results: Visual acuity ranged from normal to severe visual loss. The ocular signs included loss of eyebrows and lashes, thickened and keratinized lids, trichiasis, recurrent corneal epithelial defects, superficial and deep corneal stromal vascularization with scarring, keratoconjunctivitis sicca, and, in one patient, presumed limbal insufficiency. Whereas ocular surface integrity could be maintained with artificial tears in one patient, and an epithelial defect healed under conservative treatment in the second patient, multiple surgical procedures including superficial keratectomies, limbal allograft transplantation with systemic immunosuppression, amniotic membrane transplantation,lateral tarsorrhaphies, and lamellar keratoplasty could not preserve useful vision in the third patient. Conclusions: KID syndrome may affect the ocular adnexae and surface with variable severity independent of the age of the patient. Lid abnormalities, corneal surface instability, limbal stem cell deficiency with resulting corneal complications, and dry eye are the main ocular manifestations.

关键词： KID 鱼鳞癣同种异体角膜缘角膜切除术睫毛脱落角膜基质血管化角膜上皮缺损羊膜移植板层角膜移植术睑缘缝合术

A Solid Phase Synthesis of Chalcones by Claisen-Schmidt Condensations

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Chinese Chemical Letters 2000年第10期11卷 851-854页

作者： Mao Sheng CHENG rong Shi LI George kenyon Shenyang Pharmaceutical University 103 Wenhua RoadShenhe DistrictShenyang 110015 Department of Pharmaceutical Chemistry University of CaliforniaSan Francisco USA

In order to accelerate the development of relatively inexpensive antimalarials that are effective against chloroquine-resistant strains of Plasmodium falciparum, a methodology for the solid phase synthesis of chalcone... 详细信息

关键词： solid phase synthesis chalcones antimalarial

New Horizons in Sexual Selection research

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Current Zoology 2013年第4期59卷 553-557页

作者： kenyon B. MOBLEY Kristina KArLSSON GrEEN Guest Editors Max Planck Institute for Evolutionary Biology Department of Evolutionary Ecology August-Thienemarm-StraBe 2 24306 P16n Germany Metapopulation research Group Department of Biosciences PO Box 65 (Viikinkaari 1) FI-00014 University of Helsinki Finland Kristina

1 Introduction One of the most important decisions that a sexually reproducing organism must make in its lifetime is with whom shall it mate？ From an evolutionary perspective, the importance of this decision is paramount： make the right choice and your offspring will continue your genetic legacy; make the wrong choice and your lineage will be at a disadvantage or worse,

关键词：视野有性繁殖生物体

The Prevalence of Sexual Partner Concurrency Is Not Correlated with Markers of Poverty or Gender Inequality: An Ecological Analysis

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World Journal of AIDS 2015年第4期5卷 322-327页

作者： Chris kenyon Professor in Sexually Transmitted Infections HIV/STD Unit Institute of Tropical Medicine Antwerp Belgium

High rates of overlapping sexual relationships (concurrency) are believed to be important in the generation of generalized HIV epidemics in sub-Saharan Africa. Different authors favor socioeconomic, gender-equity or cultural explanations for the high concurrency rates in this region. We performed linear regression to analyze the association between the point-prevalence of concurrency in 15 - 49 years old males and various indicators of socioeconomic status and gender-equity using data from 11 countries surveyed in 1989/1990. We found no meaningful association between concurrency and the various markers of socioeconomic status and gender-equity. This analysis supports the findings of other studies that high concurrency rates in sub-Saharan Africa could be reduced without having to address socioeconomic and gender-equity factors.

关键词： Concurrency HIV Culture Gender Inequality Poverty Prevalence

Autonomic Nervous Activity in Multiparous Women during Early Postpartum Period: A Descriptive Study

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Open Journal of Nursing 2017年第7期7卷 734-742页

作者： Michiko Nakakita-kenyon Faculty of Nursing Kyoritsu Women’s University Tokyo Japan

Background: The purpose of the present study is to analyze the autonomic nervous activity in multiparas while resting, nursing, and rooming-in/rooming-out during days 1 to 3 of early postpartum period. Methods: Subjects were asked to record the actions they performed while wearing a heart rate monitor. Changes in autonomic nervous activity from 9 am to 12 pm and relaxation based on the relaxation (rE) scale were surveyed in multiparous women experiencing a normal postpartum period, on postpartum days 1 to 3. results: Thirteen subjects were enrolled but heart rate data for all 3 days were available for only 5 of them. In these patients, the autonomic nervous activity (heat rate, high frequency [HF], or low frequency [LF]/HF) showed no significant differences between the days during any of the time periods. However, of the 3 days, day 2 demonstrated a lower HF and higher LF/HF. Subjective sense of relaxation was higher on postpartum day 3 compared to days 1 and 2, but there was no significant difference observed in the 3-day total score. Though no significant differences in HF and LF/HF at rest and during nursing were observed for any of the 3 days, there was a tendency for HF to be lower and LF/HF to be higher during nursing than at rest. Conclusions: Autonomic nervous activity demonstrated no significant major changes between the 3 days of postpartum (day 1 to 3). However, the lower HF and higher LF/HF during nursing and rooming-in suggest that even multiparas, who are supposedly accustomed to nursing and child-rearing, can be tense. results suggest that multiparas require monitoring, personal care, and attention so that they can be relaxed and less tense while nursing and caring for their children.

关键词： Autonomic Nervous Activity Early Postpartum Multiparous Women rooming-In Nursing

Double North Pacific High in Summer

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Natural Science 2016年第5期8卷 220-226页

作者： Kern E. kenyon 4632 North lane Del Mar USA

An example of sea level pressure (SLP) and sea surface temperature (SST) is displayed for a summer month based on historical monthly mean data for the North Pacific. A double North Pacific High (NPH) co-occurred with a double large-scale SST maximum along 40 N. Centers of the two NPHs had very nearly the same longitudes as did the SST maxima. Seven similar coincidences happened within the 30-year records. These particular associations between extrema of SLPs and SSTs enhance a previously published conjecture that single and double NPHs are caused by heat transfer from the sea surface to the atmosphere. The eastern SST maximum is the signature of a permanent wide warm surface current flowing northeast off California. To the west of it in the summer is a transient wide warm surge of surface water flowing north as it crosses mid-latitudes. These are the heat sources that generate the single and double NPHs.

关键词： Double North Pacific High Double SST Maxima