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Trends in characteristics of neurologists who provide stroke consultations in the USA,2008-2021

Stroke & Vascular Neurology 2023年第1期8卷 86-88页

作者： Carter H Nakamoto andrew d wilcock Lee H Schwamm Jennifer J Majersik Kori S Zachrison Ateev Mehrotra department of Health Care Policy Harvard Medical SchoolBostonMassachusettsUSA department of Family Medicine University of Vermont Larner College of MedicineBurlingtonVermontUSA department of Neurology Massachusetts General HospitalBostonMassachusettsUSA department of Neurology University of UtahSalt Lake CityUtahUSA department of Emergency Medicine Massachusetts General HospitalBostonMassachusettsUSA division of General Medicine and Primary Care Beth Israel Deaconess Medical CenterBostonMassachusettsUSA

Introduction Patients with acute ischaemic strokes(AIS),on average,fare better with timely neurologist consultation,and a growing proportion of them receive ***,little is known about trends in the characteristics of neurologists who treat *** We identified AIS and transient ischaemic attack(TIA)episodes with neurologist consults in fee-for service Medicare from January 2008 to September *** each episode,we determined whether the neurologist was a vascular neurologist,was a high-volume provider,whether the patient was transferred between hospitals and the distance between the patient’s home and physician’s *** From 2008 to 2021,the share of AIS/TIA episodes(n=5073294)with neurologist consults increased(52.9%to 61.7%).Among episodes with consults,the fraction conducted by a vascular neurologist(5.2%to 13.7%)or by a high-volume neurologist(13.2%to 14.9%)also *** fraction with the patient’s home and neurologist greater than 100 miles apart(4.8%to 9.6%)or in different states(5.1%to 8.1%)increased,as did the fraction with transfers(4.2%to 8.5%).discussion Over the study period,the proportion of AIS/TIA episodes with consultations from neurologists with either vascular neurology certifications or high volumes increased substantially.

关键词： acute characteristics consultation

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Sow performance in response to natural betaine fed during lactation and post-weaning during summer and non-summer months

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Journal of Animal Science and Biotechnology 2020年第4期11卷 1061-1072页

作者： S.M.Mendoza R.d.Boyd J.Remus P.wilcock G.E.Martinez E.van Heugten department of Animal Science North Carolina State UniversityRaleighNC 27695USA The Hanor Company Inc. FranklinKY 42134USA duPont Animal Nutrition WilmingtonDE 19803USA. AB Vista MarlboroughUK.

Background: Two studies were conducted to evaluate the effects of dietary natural betaine on sow reproductive performance during summer(Exp. 1) and non-summer months(Exp. 2). Treatments were designed as a 2 × 2 factorial arrangement with factors including dietary betaine(0 or 0.2%) and period of supplementation(lactation or post-weaning until 35 days post-insemination). In Exp. 1, 322 and 327 sows and in Exp. 2, 300 and 327 sows representing young(parity 1 and 2) and mature(parity 3 to 6) sows, respectively, were ***: In Exp. 1, supplementation of betaine during lactation increased sow body weight losses(-11.95 vs.-14.63 kg;P = 0.024), reduced feed intake(4.12 vs. 4.28 kg/d;P = 0.052), and tended to reduce percentage of no-value pigs(P = 0.071). Betaine fed post-weaning reduced weaning-to-estrus interval(5.75 vs. 6.68 days;P = 0.054) and farrowing rate(86.74% vs. 91.36%;P = 0.060), regardless of parity group. Post-hoc analysis with sows clustered into 3 parity groups(1, 2 and 3, and 4+) indicated that betaine fed in lactation to parity 4+ sows(P = 0.026) and betaine fed post-weaning to parity 1 sows increased the number of pigs born in the subsequent cycle(P ≤ 0.05). In Exp. 2, betaine fed during lactation tended to reduce the weaning-to-estrus interval(6.64 vs. 7.50 days;P = 0.077) and farrowing rate(88.23% vs.83.54%;P = 0.089), regardless of parity group. Feeding betaine post-weaning reduced number of pigs born(13.00 vs.13.64;P = 0.04) and pigs born alive(12.30 vs. 12.82;P = 0.075), regardless of parity ***: Using 0.2% betaine during the non-summer months did not benefit sow performance. during the summer, betaine supplementation in lactation increased subsequent litter size in parity 4+ sows. Betaine fed during the post-weaning period reduced the wean-to-estrus interval and farrowing rate, increased total number of pigs born for parity 1 sows and reduced total number of pigs born to parity 4+ sows. Further research is needed to determine if

关键词： Betaine Lactation Post-weaning Reproduction Sows

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径向滑动轴承工作性能的改善

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机械 1990年第6期17卷 46-48页

作者： E.R.Booser d.F.wilcock 马泽民

正确地设计径向滑动轴承内的供油槽,可以从几个方面改善轴承的工作性能:把清洁的润滑油恰当地散布在轴承内表面上;有助于降低润滑油的温度;保持承载区的油膜。供油槽的设计包括如下三个方面的内容: 1.对滑动轴承的供油槽倒棱。正确地倒... 详细信息

正确地设计径向滑动轴承内的供油槽,可以从几个方面改善轴承的工作性能:把清洁的润滑油恰当地散布在轴承内表面上;有助于降低润滑油的温度;保持承载区的油膜。供油槽的设计包括如下三个方面的内容: 1.对滑动轴承的供油槽倒棱。正确地倒棱可以避免在油膜内产生气穴,并使整个油膜承受载荷。 2.使润滑油从供油槽端部的泄油槽泄漏,有助于排除吸入的空气和污物,降低油膜和泄油的温度。 3.恰当地确定供油槽横截面尺寸,使轴向能保持充分的润滑油流。

关键词：径向滑动轴承性能滑动轴承

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发动机调整对现代高速直喷式柴油机排放性能的影响

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汽车与新动力 2001年第2期33卷 26-31页

作者： Smith A Tidmarsh d T wilcock M 段缨

全世界日益严格的排放法规迫使制造商不得不将更多的注意力转向点燃和压燃发动机的排放性能上。发动机电子控制系统可精确控制发动机运行参数,并提供了一种按发动机性能以最低成本的低排放的发动机调整方法。本文旨在定量分析两项调整参... 详细信息

全世界日益严格的排放法规迫使制造商不得不将更多的注意力转向点燃和压燃发动机的排放性能上。发动机电子控制系统可精确控制发动机运行参数,并提供了一种按发动机性能以最低成本的低排放的发动机调整方法。本文旨在定量分析两项调整参数,即喷油始点和废气再循环(EGR)率对现代电控高速直喷式柴油机排放的影响,介绍发动机在两种转速和负荷组合(代表欧洲排放循环期间典型的发动机运转工况)下运行时的排放数据。在每一工况下改变调整策略并观察其结果。研究喷油始点和EGR率的变化对排放和发动机性能的影响,从而发现它们都对发动机效率和排放性能具有重大的影响。

关键词：高速柴油机直接喷射柴油机调整排放

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dietary xylanase and live yeast supplementation influence intestinal bacterial populations and growth performance of piglets fed a sorghum-based diet

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Animal Nutrition 2020年第4期6卷 457-466页

作者： Gemma González-Ortiz Marco A.Callegari Pete wilcock diego Melo-duran Michael R.Bedford Hilário R.V.Oliveira Marcos A.A.da Silva Carlos R.Pierozan Caio A.da Silva AB Vista MarlboroughWiltshireSN84ANUnited Kingdom AKEI Animal Research Fartura18870000Brazil Servei de Nutricio i Benestar Animal(SNiBA) Department de Ciencia Animal i dels AlimentsUniversitat Autonoma de Barcelona(UAB)08193Spain Universidade Estadual Norte do Parana Bandeirantes86360000Brazil Universidade Estadual de Londrina Londrina86051990Brazil

This study was to evaluate the effect of xylanase supplementation and the addition of live yeast,Saccharomyces cerevisiae,on growth performance and intestinal microbiota in *** hundred and eighty commercial crossbred 23-d-old piglets(PIC 417)were sorted by initial BW and allocated to 3 treatments:control(CTR)diet,CTR diet supplemented with xylanase at 16,000 birch xylan units/kg(XYL)and XYL diet supplemented with live yeast(2 x 1010 CFU/g)at 1 kg/t(XYL+LY).Each treatment had 10 replicates,with 6 animals each.A sorghum-based diet and water were available ad libitum for 42 d of the *** daily gain(AdG)and average daily feed intake(AdFI)were measured from 0 to 42 d(23-to 65-d-old)and feed conversion ratio(FCR)*** the end of the study,bacterial identification through 16 S rRNA(V3 to V4)sequencing of the ileal and caecal digesta from one piglet per replicate was *** treatment effects were observed on *** offered the live yeast in addition to the xylanase had increased AdG compared with those supplemented with xylanase alone(XYL+LY ***;P=0.655).FCR was improved with XYL and XYL+LY compared with CTR(P=0.018).Clostridiaceae counts in the ileum tended to reduce by 10%with XYL and 14%with XYL+LY compared to CTR(P=0.07).XYL and XYL+LY increased the counts of Lactobacillaceae in the caecum compared with CTR(Pdietary supplementation of live yeast combined with xylanase improved growth performance and microbial balance of piglets during the nursery phase.

关键词： Sorghum Nursery piglet Xylanase Live yeast Growth performance Microbiota

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微生物植酸酶和氧化锌对断奶仔猪生产性能和血清微量元素的影响

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饲料与畜牧（新饲料） 2015年第3期 41-45页

作者：王继强 Walk C Srinongkote S wilcock P 北京市营养源研究所北京100069

杂交猪（n=288,日龄21±3d,体重7.1±0.2kg）经42d饲养试验,研究微生物植酸酶和不同水平的氧化锌对断奶仔猪生产性能和血清微量元素的影响。仔猪（6头阉割的公猪或母猪每栏）随机分组,采用2×3因子设计,2种水平的植酸酶（0FTU/kg和2500F... 详细信息

杂交猪（n=288,日龄21±3d,体重7.1±0.2kg）经42d饲养试验,研究微生物植酸酶和不同水平的氧化锌对断奶仔猪生产性能和血清微量元素的影响。仔猪（6头阉割的公猪或母猪每栏）随机分组,采用2×3因子设计,2种水平的植酸酶（0FTU/kg和2500FTU/kg）和3种水平的氧化锌（0mg/kg、1,750mg/kg、2,500mg/kg,锌的有效含量为72%）,每个试验组包含4栏阉割的公猪和4栏母猪。日粮营养成分包括钙磷等均超过营养需要量,试验分0-21d（阶段1）和22-42d（阶段2）。在阶段1,阶段2及整个42d试验期间,氧化锌和植酸酶相互作用对仔猪生产性能、血清锌、血清磷的含量没有显著影响（P〉0.05）。无论添加何种水平的氧化锌,植酸酶显著增加了阶段1仔猪日采食量（P=0.01）和日增重（P=0.02）,显著改善了整个试验期间的日增重（P=0.01）。日粮添加氧化锌显著降低了日增重（P=0.05）,3,500mg/kg氧化锌降低了阶段2猪的饲料转化效率。阶段1中,在不添加氧化锌的条件下植酸酶增加了血清钙的含量,这表明,氧化锌和植酸酶有显著的相互作用（P=0.02）。当氧化锌在阶段1中的日粮添加水平增加时,血清锌含量极显著线性增加（P〈0.001）,血清磷含量显著降低（P=0.05）。在阶段2中,随着氧化锌在日粮中的添加水平增加,血清钙的含量显著降低（P=0.04）,血清锌的含量显著增加（P=0.02）。植酸酶极显著增加了阶段1中仔猪血清锌（P=0.009）和磷（P=0.001）的水平。在阶段2中,添加植酸酶对血清磷的含量没有影响。总之,在本试验中,日粮添加氧化锌降低了仔猪的生产性能。在钙和磷充足的日粮中,无论添加何种的氧化锌,添加植酸酶均能够改善日增重,这可能是由于植酸中抗营养因子含量的降低。另外,通过植酸的水解产生植酸酶,从而降低了植酸-锌的相互作用并增加了血清锌、钙和磷的含量。然而,日粮添加氧化锌增加了血清锌的含量,导致降低了血清磷和钙的含量,表明钙-锌-磷存在拮抗作用。另外,植酸酶仅仅在不添加锌的条件下能够增加血清钙的含量,进一步表明血清锌、钙和磷有复杂的相互作用。

关键词：钙磷植酸酶猪氧化锌

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