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近地低速飞行时旋翼尾涡系的畸变及其诱导速度

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空气动力学学报 1989年第1期7卷 35-42页

作者：孙茂 H.c.curtiss jr. 北京航空航天大学美国普林斯顿大学

本文用一简化自由涡模型模拟旋翼尾涡系,用一简单涡模拟地面涡,对近地低速飞行时旋翼尾涡系的畸变及其引起的诱导速度变化作了研究。在地面涡和地面的影响下,桨盘附近的尾涡几何位置发生很大变化,导致桨盘处的诱导速度发生很大变化。尾... 详细信息

本文用一简化自由涡模型模拟旋翼尾涡系,用一简单涡模拟地面涡,对近地低速飞行时旋翼尾涡系的畸变及其引起的诱导速度变化作了研究。在地面涡和地面的影响下,桨盘附近的尾涡几何位置发生很大变化,导致桨盘处的诱导速度发生很大变化。尾涡畸变在桨盘处引起的诱导速度变化远远大于地面涡和地面在桨盘处直接产生的诱导速度。考虑尾涡畸变后计算出的诱导速度在桨盘处的分布和实验符合很好。

关键词：旋翼尾涡系畸变低速飞行

Selectively breeding for high voluntary physical activity in female mice does not bestow inherent characteristics that resemble eccentric remodeling of the heart,but the mini-muscle phenotype does

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Sports Medicine and Health Science 2023年第3期5卷 205-212页

作者： Eric c.Leszczynski Nicole E.Schwartz Ashley c.McPeek Katharine D.currie David P.Ferguson Theodore Garland jr. Department of Kinesiology Michigan State UniversityEast LansingMIUSA Department of Evolution Ecologyand Organismal BiologyUniversity of California RiversideRiversideCAUSA

Physical activity engagement results in a variety of positive health outcomes,including a reduction in cardiovascular disease risk partially due to eccentric remodeling of the *** purpose of this investigation was to determine if four replicate lines of High Runner mice that have been selectively bred for voluntary exercise on wheels have a cardiac phenotype that resembles the outcome of eccentric *** females(average age 55 days)from the 4 High Runner and 4 non-selected control lines were anaesthetized via vaporized isoflurane,then echocardiographic images were collected and analyzed for structural and functional *** Runner mice in general had lower ejection fractions compared to control mice lines(2-tailed p=0.0236)and tended to have thicker walls of the anterior portion of the left ventricle(p=0.065).However,a subset of the High Runner individuals,termed mini-muscle mice,had greater ejection fraction(p=0.0006),fractional shortening percentage(pcular mass at dissection(pcovariate)compared to non-mini muscle *** from replicate lines bred for high voluntary exercise did not all have inherent positive cardiac functional or structural characteristics,although a genetically unique subset of mini-muscle individuals did have greater functional cardiac characteristics,which in conjunction with their previously described peripheral aerobic enhancements(e.g.,increased capillarity)would partially account for their increased VO2max.

关键词： Echocardiography Heart Voluntary physical activity cardiovascular disease Wheel running

A behavior and physiology-based decision support tool to predict thermal comfort and stress in non-pregnant,mid-gestation,and late-gestation sows

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Journal of Animal Science and Biotechnology 2023年第2期14卷 814-826页

作者： Betty R.Mcconn Allan P.Schinckel Lindsey Robbins Brianna N.Gaskill Angela R.Green‑Miller Donald c.Lay jr Jay S.Johnson Oak Ridge Institute for Science and Education Oak RidgeTN 37830USA Department of Animal Sciences Purdue UniversityWest LafayetteIN 47907USA Department of Agricultural and Biological Engineering University of IllinoisUrbanaIL 61801USA USDA-ARS Livestock Behavior Research Unit West LafayetteIN 47907USA.

Background:Although thermal indices have been proposed for swine,none to our knowledge differentiate by reproductive stage or predict thermal comfort using behavioral and physiological *** study objective was to develop a behavior and physiology-based decision support tool to predict thermal comfort and stress in multiparous(3.28±0.81)non-pregnant(n=11),mid-gestation(n=13),and late-gestation(n=12)***:Regression analyses were performed using PROc MIXED in SAS 9.4 to determine the optimal environmental indicator[dry bulb temperature(TDB)and dew point]of heat stress(HS)in non-pregnant,mid-gestation,and lategestation sows with respiration rate(RR)and body temperature(TB)successively used as the dependent variable in a cubic function.A linear relationship was observed for skin temperature(T_(S))indicating that TDB rather than the sow HS response impacted T_(S)and so T_(S)was excluded from further *** stage was significant for all analyses(Pch reproductive stage were calculated using the inflections points of RR for mild HS and TB for moderate and severe *** HS inflection points differed for non-pregnant,mid-gestation,and late gestation sows and occurred at 25.5,25.1,and 24.0℃,*** HS inflection points differed for non-pregnant,mid-gestation,and late gestation sows and occurred at 28.1,27.8,and 25.5℃,*** HS inflection points were similar for non-pregnant and mid-gestation sows(32.9℃)but differed for late-gestation sows(30.8℃).These data were integrated with previously collected behavioral thermal preference data to estimate the TDB that non-pregnant,mid-gestation,and late-gestation sows found to be cool(TDBce range),comfortable(TDB=TDB preference range),and warm(TDB preference rangeconclusions:The results of this study provide valuable information about thermal comfort and thermal stress thresholds in sows at three reproductive *** dev

关键词： Decision support Gestation Heat stress Management Sows Thermal index

Development of a Procedure to Maximize Production of Hardy Rootstocks of citrus Using Stem cuttings

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American Journal of Plant Sciences 2017年第11期8卷 2837-2846页

作者： Richard c. Beeson jr. Dilma Silva University of Florida Institute of Food and Agricultural Science Mid-Florida Research and Education center Apopka USA Agromillora Florida Inc. Wildwood USA

Shoots of citrus sp. Kuharske were used to develop protocols for rooting reportedly HLB resistance rootstocks under intermittent mist. Investigated were shoot maturity, nodes per cutting, leaves per cutting, effects of buds, auxin concentrations and auxin solvent. Shoot maturity was most influential for success, with cuttings taken below the first 30 cm of active terminal growth producing greater root generation. Use of a thickening agent (Natrosal) to dilute the commercial auxin was second most in importance for rooting success. Root mass increased with increasing number of leaves. cutting stems between nodes or below the lowest bud were inconsequential. To produce maximum number of viable cuttings, single node-single leaf cuttings were preferred. Single bud cuttings produced one shoot after rooting. This was adventitious since multi-node cuttings usually sprouted new shoots that would need to be removed before budded. Evaluation of the best combination of auxin and cutting-related attributes were evaluated with four additional common rootstocks in June 2016. Rooting was 100% successful. A quick dip (0.5 s) in a 7500 ppm solution of Dip&Gro produced the most root generation in six weeks for all rootstocks. Root quantity varied by rootstock.

关键词： citrus Propagation Auxin concentration Stem Maturity cutting Length

Intestinal parasitic infections in Aetas and domesticated swine in Pampanga,Philippines

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Asian Pacific Journal of Tropical Medicine 2022年第11期15卷 522-524页

作者： Jessica Joyce R De Guia Mary Jane c Flores Derick Erl P Sumalapao Eligio Santiago V Maghirang Vicente Y Belizario jr. Department of Biology College of ScienceDe La Salle UniversityManilaPhilippines Biological control Research Unit(BcRU) Center for Natural Sciences and Environmental Research(CENSER)College of ScienceManila Ehime University-De La Salle University International collaborative Research Laboratory De La Salle UniversityLaguna CampusLaguna ProvincePhilippines Department of Epidemiology and Biostatistics College of Public HealthUniversity of the PhilippinesManilaPhilippines Department of Internal Medicine-Section of General Medicine Department of Medical Education and Research the Makati Medical Center Department of Emergency Medicine Asian Hospital and Medical CenterMetro ManilaPhilippines Department of Parasitology College of Public HealthUniversity of the PhilippinesManilaPhilippines

Indigenous peoples account for about 6%of the world’s population and are highly vulnerable to parasitic infections[1,2].Aetas,one of the indigenous people groups in the Philippines,rely on backyard swine production as their primary means of livelihood[3].Literature indicated that zoonoses arise from close physical contact and the cohabitation of humans with domesticated animals[4].Ascaris spp.

关键词： swine domestica habitat

晚明“混音文化”现象在徐渭《歌代啸》中的体现

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苏州大学学报（哲学社会科学版） 2012年第1期33卷 151-155页

作者： Kevin c. Schoenberger, jr 苏州大学

徐渭(1521-1593)是明代著名的剧作家、画家和诗人。本文立足于他的杂剧《歌代啸》,并参考其它戏剧作品、戏曲理论以及艺术作品,探讨晚明"混音"现象。

关键词： “混音文化” 徐渭《歌代啸》

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注水提高天然气采收率

油气田开发工程译丛 1992年第7期 14-18页

作者： c.,LD,jr 鄢艳

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经椎动脉的小脑淋巴管前淋巴系统

解剖学报 1990年第3期21卷 226-227页

作者：王怀经 c－S.,jr 山东医科大学山东济南澳大利亚Adelaide大学澳大利亚

将印度墨汁注射在大鼠的小脑皮质中,在电镜下,注射部位附近毛细血管的魏尔啸-罗宾间隙,以及小脑动脉、基底动脉、椎动脉的颅内段和颅外段的外膜中,都能发现碳颗粒。部分颈淋巴结变黑,电镜下亦可见有碳颗粒存在。这表明示踪剂经椎动脉-... 详细信息

将印度墨汁注射在大鼠的小脑皮质中,在电镜下,注射部位附近毛细血管的魏尔啸-罗宾间隙,以及小脑动脉、基底动脉、椎动脉的颅内段和颅外段的外膜中,都能发现碳颗粒。部分颈淋巴结变黑,电镜下亦可见有碳颗粒存在。这表明示踪剂经椎动脉-基底动脉系外膜中的组织间隙引流。

关键词：椎动脉脑淋巴管淋巴系统

An electronic nose using a single graphene FET and machine learning for water, methanol, and ethanol

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Microsystems & Nanoengineering 2020年第1期6卷 969-981页

作者： Takeshi Hayasaka Albert Lin Vernalyn c.copa Lorenzo P.Lopez jr Regine A.Loberternos Laureen Ida M.Ballesteros Yoshihiro Kubota Yumeng Liu Arnel A.Salvador Liwei Lin Berkeley Sensor and Actuator center&Department of Mechanical Engineering University of California at BerkeleyBerkeleyCA 94720USA Materials Science and Engineering Program College of ScienceUniversity of the Philippines Diliman1101 Quezon CityPhilippines National Institute of Physics College of ScienceUniversity of the Philippines Diliman1101 Quezon CityPhilippines

The poor gas selectivity problem has been a long-standing issue for miniaturized chemical-resistor gas *** electronic nose(e-nose)was proposed in the 1980s to tackle the selectivity issue,but it required top-down chemical functionalization processes to deposit multiple functional ***,we report a novel gas-sensing scheme using a single graphene field-effect transistor(GFET)and machine learning to realize gas selectivity under particular conditions by combining the unique properties of the GFET and e-nose *** of using multiple functional materials,the gas-sensing conductivity profiles of a GFET are recorded and decoupled into four distinctive physical properties and projected onto a feature space as 4D output vectors and classified to differentiated target gases by using machine-learning *** single-GFET approach coupled with trained pattern recognition algorithms was able to classify water,methanol,and ethanol vapors with high accuracy quantitatively when they were tested ***,the gas-sensing patterns of methanol were qualitatively distinguished from those of water vapor in a binary mixture condition,suggesting that the proposed scheme is capable of differentiating a gas from the realistic scenario of an ambient environment with background *** such,this work offers a new class of gas-sensing schemes using a single GFET without multiple functional materials toward miniaturized e-noses.

关键词： methanol selectivity electronic