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9篇 您的检索式:作者名="F.Johnson"
    题名 作者 年代 出处 被引量
1串联式炼胶法(译文)显示文摘目前混炼胶料的生产工艺有如下几种: ①两段或多段炼胶法。两段或多段炼胶法是目前最常用的炼胶方法。但是这些方法具有多次搬运胶料以及母炼胶需要存放场地和存放时间等缺点。②在开炼机上填加活性物质(如硫黄和促进剂等)。F.Johnson 任大卫 1993橡胶技术与装备1993,19,4:2
2WHY FIRMS SEEK ISO 9000 CERTIFICATION: REGULATORY COMPLIANCE OR COMPETITIVE ADVANTAGE?显示文摘Shannon W.Anderson J. DanielDaly Marilyn F.Johnson 2009Production and Operations Management2009,,1:1
3General noise process in hybrid infrared focal plane arrays显示文摘Mark D.Nelson Jerris F.Johnson Terrence S.Lomheim 0,,11:1
4The Effects of Breaststroke Kick Electromyography Muscle Activity显示文摘This paper evaluates the efficiency of using a downward breaststroke kick in a sample of eight elite swimmers.Using a downward breaststroke kick increases the one stroke velocity and max speed but also increases production of lactate acid.Utilizing the downward breaststroke kick we find the 100-meter and 100-yard breaststroke times decrease from 1:05.10s to 1:01.97s and find the downward breaststroke kick increases muscle activity of the quadriceps,biceps,and calves.The increases in performance were observed from measuring the world class swimmers are highly correlated to duration of the kick aerodynamic buoyant force in breaststroke.Takahisa Ide M.A. William F.Johnson Sadafumi Takise Jan Konarzewski Noriko Inada Hiromasa Fujimori Takeharu Fujimori Emi Moronuki Ken A.Barcinas Kohei Kawamoto Kazuki Watanabe Asahi Nagahata Iryna Glavnyk Daniil Antipov Mark Nikolaev Bogdan Plavin 2021Psychology Research2021,11,8:0
5Ophthalmic manifestations of Cryptococcus gattii species complex:a case series and review of the literature显示文摘AIM:To report 4 cases of Cryptococcus gattii(C.gattii)species complex infection with diverse ophthalmic manifestations,and to review the literature to examine pathobiology of disease,classical ophthalmic presentations and outcomes,and treatment modalities for this emerging pathogen.METHODS:Cases of C.gattii meningoencephalitis with ophthalmic manifestations were identified via chart review at two institutions in Australia and one institution in the mid-west region of the United States and are reported as a case series.Additionally,a MEDLINE literature review was conducted to identify all reported cases of C.gattii with ophthalmic manifestations from 1990-2020.Cases were reviewed and tabulated,together with our series of patients,in this report.RESULTS:Four cases of C.gattii with ophthalmic manifestations are presented;three from Australia and one from the USA.A literature review identified a total of 331 cases of C.gattii with visual sequelae.The majority of cases occurred in immunocompetent individuals.Blurred vision and diplopia were the most common presenting symptoms,with papilloedema the most common sign,reported in 10%-50%of cases.Visual loss was reported in 10%-53%of cases,as compared to rates of visual loss of 1%-9%in C.neoformans infection.Elevated intracranial pressure,cerebrospinal fluid(CSF)fungal burden,and abnormal neurological exam at presentation correlated with poor visual outcomes.The mainstays of treatment are anti-fungal agents and aggressive management of intracranial hypertension with serial lumbar punctures.CSF diversion procedures should be considered for refractory cases.Acetazolamide and mannitol are associated with high complication rates,and adjuvant corticosteroids have demonstrated higher mortality rates;these treatments should be avoided.CONCLUSION:Permanent visual loss represents a devastating yet potentially preventable sequelae of C.gattii infection.Intracranial hypertension needs to be recognised early and aggressively managed.Referral to an ophthalmologist/neuro-ophthalmologist in all cases of cryptococcal infection independent of visual symptoms at time of diagnosis is recommended.Grace A.McCabe Jack W.McHugh Todd Goodwin Douglas F.Johnson Anthony Fok Thomas G.Campbell 2022International Journal of Ophthalmology(English edition)2022,15,1:0
6World Class Elite Breaststrokers Downward Kick EMG Muscle Activity of the Gluteus Maximus, Quadriceps Femoris, Hamstring, Gastrocnemius Medialis, Rectus Abdominal, and Erector Spinae显示文摘This study analyzed the difference between using a downward breaststroke kick and a horizontal breaststroke kick in a sample of world class elite swimmers.We compared average muscle activity of the gluteus maximus,quadriceps femoris(vastus medialis and rectus femoris),hamstring/long head of the biceps femoris,gastrocnemius medialis,rectus abdominal,and erector spinae when using the downward breaststroke kick technique.We find that when this sample of swimmers utilized the downward breaststroke kick,max speed and velocity per stroke increased,measured by 12,788 EMG samples,where the results are highly correlated to duration of the aerodynamic buoyant force in breaststroke kick technique.The increases in performance observed from measuring the world class elite swimmers is highly correlated to the duration of the kick aerodynamic buoyant force.Among this sample of elite swimmers,the longer a swimmer demonstrates a buoyant force breaststroke kick,the lower the time in a 100 breaststroke.Takahisa Ide William F.Johnson Sadafumi Takise Noriko Inada Hiromasa Fujimori Takeharu Fujimori Emi Moronuki Ai Soma Kazuki Watanabe Asahi Nagahata Iryna Glavnyk Mark Nikolaev Bogdan Plavin 2024Psychology Research2024,14,2:0
7前苏联的空对空导弹显示文摘在过去的10多年中,人们对苏联的空对空导弹了解得不多,并且认为俄国人的空空导弹技术赶不上它的战斗机发展的需要。西方专家曾经把 Mig-29与 Su-27飞机看作是与西方的飞机相当的飞机,但这些飞机没有较为先进的空对空导弹。但是最近,俄国的空空导弹性能有明显提高,并可以与美国的 AlM-g 响尾蛇和AIM-7麻雀空空导弹相比拟,最著明的有:AA-10白杨树(Alamo)。金同泰 Reuben F.Johnson 1993航空兵器1993,,1:0
8The relationship between intimate partner violence and HIV:A model-based evaluation显示文摘Background:Many studies have shown that women who have experienced intimate partner violence(IPV)are at a greater risk of HIV,but the factors accounting for this association are unclear,and trials of interventions to reduce IPV have not consistently reduced HIV incidence.Methods:This study uses an agent-based model,calibrated to South African data sources,to evaluate hypotheses about likely causal pathways linking IPV,HIV,and other confounding factors.Assumptions about associations between IPV and HIV risk behaviours were based on reviews of international literature.Findings:There is an association between past IPV experience and HIV incidence even when no causal effects are assumed(IRR 1.28,95%CI 1.23e1.34),because women with a propensity for multiple partners are more likely to have ever been in a relationship with a violent partner.If,in addition,men with a propensity for concurrent relationships are more likely to perpetrate IPV,the IRR increases to 1.42(95%CI 1.36e1.48),consistent with empirical IRR estimates.Alternative scenarios in which experience of IPV is assumed to cause changes in women's sexual behaviour have little effect on the IRR.An intervention that reduces IPV by 50%could be expected to reduce HIV incidence by at most 1.3%.Interpretation:Much of the observed association between IPV and HIV is likely to be due to confounding behavioural factors.Although interventions to reduce IPV are important,these interventions alone are unlikely to have a substantial impact on HIV incidence.Simon W.Rigby Leigh F.Johnson 2017Infectious Disease Modelling2017,2,1:0
9串联式混炼显示文摘前言目前生产混炼胶料所采用的加工工艺如下所述: 1.两段或者多段式工艺。两段或者多段式工艺是目前最通用的混炼方法。然而,它们在多重加工方法和母炼胶的贮存空间及存放时间方面还存在问题。 2.在开炼机上添加活性材料(硫黄和促进剂)。虽然这种工艺经常用于橡胶工业制品,但仍有一些缺点,例如密炼机和开炼机之间不同的混炼周期和生产能力、受生产人员和操作问题的影响等。F.Johnson 许国栋 1993橡胶参考资料1993,23,12:0
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