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Quantum Stabilization of General-Relativistic Variable-Density Degenerate Stars

Journal of Modern Physics 2012年第7期3卷 561-569页

作者： David Eric cox Ronald L. Mallett MP Silverman Department of Physics Trinity College Hartford CT Department of Physics University of Connecticut Storrs CT

Research by one of the authors suggested that the critical mass of constant-density neutron stars will be greater than eight solar masses when the majority of their neutrons group into bosons that form a Bose-Einstein condensate, provided the bosons interact with each other and have scattering lengths on the order of a picometer. That analysis was able to use Newtonian theory for the condensate with scattering lengths on this order, but general relativity provides a more fundamental analysis. In this paper, we determine the equilibrium states of a static, spherically-symmetric variable-density mixture of a degenerate gas of noninteracting neutrons and a Bose-Einstein condensate using general relativity. We use a Klein-Gordan Lagrangian density with a Gross-Pitaevskii term for the condensate and an effective field for the neutrons. We show that a new class of compact stars can exist with masses above the Oppenheimer-Volkoff limit, provided the scattering length of the bosons is large enough. These stars have no internal singularities, obey causality, and demonstrate a quantum mechanism consistent with general relativity that could prevent collapsed stars from becoming black holes.

关键词： Gravity General Relativity Neutron Stars Black Holes Bose-Einstein Condensates Numerical Physics

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Age as a predictor of clinical outcomes and determinant of therapeutic measures for emergency medical services treated cardiogenic shock

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Journal of Geriatric Cardiology 2023年第1期20卷 1-10页

作者： Xiaoman Xiao Jason E Bloom Emily Andrew Luke P Dawson Ziad Nehme Michael Stephenson David Anderson Himawan Fernando Samer Noaman Shelley cox William Chan David M Kaye Karen Smith Dion Stub Department of Cardiology Alfred Health55 Commercial RoadMelbourneAustralia Baker Heart and Diabetes Institute 75 Commercial RoadMelbourneAustralia Department of Cardiology Western HealthFurlong RoadSt AlbansAustralia Ambulance Victoria 31 Joseph StreetBlackburnAustralia School of Public Health and Preventive Medicine Monash University553 St Kilda RoadMelbourneAustralia Department of Paramedicine Monash UniversityMcMahons RoadFrankstonAustralia

BACKGROUND The impact of age on outcomes in cardiogenic shock(CS)is poorly described in the pre-hospital *** assessed the impact of age on outcomes of patients treated by emergency medical services(EMS).METHODS This population-based cohort study included consecutive adult patients with CS transported to hospital by *** linked patients were stratified into tertiles by age(18-63,64-77,and>77 years).Predictors of 30-day mortality were assessed through regression *** primary outcome was 30-day all-cause *** A total of 3523 patients with CS were successfully linked to state health *** average age was 68±16 years and 1398(40%)were *** patients were more likely to have comorbidities including pre-existing coronary artery disease,hypertension,dyslipidemia,diabetes mellitus,and cerebrovascular *** incidence of CS was significantly greater with increasing age(incidence rate per 100,000 person years 6.47[95%CI:6.1-6.8]in age 18-63 years,34.34[32.4-36.4]in age 64-77 years,74.87[70.6-79.3]in age>77 years,P77 years had increased risk of 30-day mortality(adjusted hazard ratio=2.26[95%CI:1.96-2.60]).Older patients were less likely to receive inpatient coronary *** Older patients with EMS-treated CS have significantly higher rates of short-term *** reduced rates of invasive interventions in older patients underscore the need for further development of systems of care to improve outcomes for this patient group.

关键词： assessed services shock

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Mapping of a dominantly inherited spinocerebellar ataxia with azoospermia to chromosome 7q32.3

Mapping of a dominantly inherited spinocerebellar ataxia wit...

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中国神经科学学会第四次会员代表大会暨第八届全国学术会议

作者： Nancy J.cox Christopher M.Gomez Section of Genetic Medicine Department of MedicineUniversity of ChicagoChicago60637USA Department of Neurology University of Chicago Medical CenterChicagoIllinois 60637USA

＜正＞The dominantly inherited spinocerebellar ataxias（SCA） are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by progressive imbalance,dysarthria and motor *** distinct SCA subtypes can only be distinguished consistently by genetic *** identified a five-generation kindred of french ancestry inherited as an autosomal dominant trait that is associated with a novel form of progressive ataxia and cognitive impairment,in which all affected males are *** disorder is inherited only from affected or presymptomatic *** affected individuals including 9 females and 11 males,particularly females,have a broad range of age of onset, which is significantly much later than male *** neuropsychological evaluations demonstrated cognitive impairment with borderline IQ scores for those with onset of ataxia before 40 years *** magnetic resonance imaging demonstrates cerebellar *** males had testicular atrophy and *** biopsy from one sterile male demonstrated complete absence of germ cells and *** exclusion of mutations in or linkage to known SCA loci and genes,fragile X,X-linkage,Y-chromosome microdeletion,we carried out a genome-wide genetic linkage scan and located the disease locus to chromosome 7q32.3 by two-point analysis（a maximal two-point LOD score of 3.59,9=0） and haplotype-based *** of one candidate disease-causing gene（transiently secret） within the region using a recombinant DNA sequencing approach including TA clone method,which carried（ATTCT）n pentanucleotide repeat units in intron 31,revealed an interesting small difference in the size of repeat between affected and normal individuals in the pedigree,for which more normal controls should be detected and confirmed for co-segregation in the *** of the gene responsible for this complex phenotype may shed additional light into the pa

关键词： dominantly inherited spinocerebellar ataxia kindred clinical characteristics mapping

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Red Hat Linux系统管理员手册

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2001年

作者：（美）Kerry cox 归元工作室译

本书介绍了如何对服务器进行设置，如何管理用户，设置策略与系统监测，整理、备份及故障诊断和排除，安装附加程序，定制桌面环境，以及创建自己的定制内核。

ISBN: (纸本)7111089979

关键词： UNIX操作系统

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Fundamentals of linear electronics : integrated and discrete 2nd ed.

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2002年

作者： cox James F.

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非特异性防御机制:NO的作用

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国外医学（寄生虫病分册） 1992年第2期19卷 68-69页

作者： Liew FY cox FEG 蔡银龙

作者查对了支持NO在寄生虫病中作用的证据,并提出NO介导的寄生虫损伤的可能机制。

关键词：寄生虫病防御机制一氧化氮

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Urinary nuclear magnetic resonance spectroscopy of a Bangladeshi cohort with hepatitis-B hepatocellular carcinoma: A biomarker corroboration study

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World Journal of Gastroenterology 2016年第16期22卷 4191-4200页

作者： I Jane cox Abil E Aliev Mary ME Crossey Mahvish Dawood Mamun Al-Mahtab Sheikh M Akbar Salimur Rahman Antonio Riva Roger Williams Simon D Taylor-Robinson Institute of Hepatology London Foundation for Liver Research Department of Chemistry University College London Division of Digestive Diseases Department of Surgery and Cancer Imperial College London Department of Hepatology Bangabandhu Sheikh Mujib Medical University Department of Medical Sciences Toshiba General Hospital

AIM: To establish if a distinct urinary metabolic profile could be identified in Bangladeshi hepatitis-B hepatocellular carcinoma (HCC) patients compared to cirrhosis patients and ***: Urine samples from 42 Bangladeshi patients with HCC (39 patients with hepatitis-B HCC), 47 with cirrhosis on a background of hepatitis B, 46 with chronic hepatitis B, and seven ethnically-matched healthy controls were analyzed using nuclear magnetic resonance (NMR) spectroscopy. A full dietary and medication history was recorded for each subject. The urinary NMR data were analyzed using principal component analysis (PCA) and orthogonal partial least squared discriminant analysis (OPLS-DA) techniques. Differences in relative signal levels of the most discriminatory metabolites identified by PCA and OPLS-DA were compared between subject groups using an independent samples Kruskal-Wallis one-way analysis of variance (ANOVA) test with all pairwise multiple comparisons. Within the patient subgroups, the Mann-Whitney U test was used to compare metabolite levels depending on hepatitis B e-antigen (HBeAg) status and treatment with anti-viral therapy. A Benjamini-Hochberg adjustment was applied to acquire the level of significance for multiple testing, with a declared level of statistical significance of P < ***: There were significant differences in age (P < 0.001), weight (P < 0.001), and body mass index (P < 0.001) across the four clinical subgroups. Serum alanine aminotransferase (ALT) was significantly higher in the HCC group compared to controls (P < 0.001); serum α-fetoprotein was generally markedly elevated in HCC compared to controls; and serum creatinine levels were significantly reduced in the HCC group compared to the cirrhosis group (P = 0.004). A three-factor PCA scores plot showed clustering of the urinary NMR spectra from the four subgroups. Metabolites that contributed to the discrimination between the subgr

关键词： Urinary metabolic profiling Hepatocellular carcinoma Nuclear magnetic resonance spectroscopy Hepatitis B Bangladesh

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Study design in evidence-based surgery:What is the role of case-control studies?

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World Journal of Methodology 2016年第1期6卷 101-104页

作者： Amy M Cao Michael R cox Guy D Eslick Discipline of Surgery the University of SydneyNepean Hospital

Randomized controlled trials(RCTs) are the gold standard in terms of study design, however, in the surgical setting conducting RCTs can often be unethical or logistically impossible. Case-control studies should become the major study design used in surgical research when RCTs are unable to be conducted and definitely replacing case series which offer little insight into surgical outcomes and disease processes.

关键词： Research studies Case-control studies Randomized clinical trials Bias Sample size

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Scientists Are Made,Not Born

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当代外语研究 2005年第7期 37-38页

作者： W.Michael cox Richard Alm 陈槟泽

今年年初,哈佛大学校长劳伦斯·萨莫斯曾声称“女性在科学领域内建树甚少可能因为先天男女性别差异”。此言一出,激起美国舆论轩然大波。难道男性真的天生就更适合从事科学研究工作?本文则认为,科学家不是天生的,而是后天造就的。文中... 详细信息

今年年初,哈佛大学校长劳伦斯·萨莫斯曾声称“女性在科学领域内建树甚少可能因为先天男女性别差异”。此言一出,激起美国舆论轩然大波。难道男性真的天生就更适合从事科学研究工作?本文则认为,科学家不是天生的,而是后天造就的。文中图表显示,随着女性接受高等教育的比例越来越高,她们有了更多可以展示自我的机会。和男性一样,女性也可以在科学领域闯出自己的一片天地。你认为呢?

关键词： Scientists Are Made,Not Born

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中文版Windows 95快速培训教程

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丛书名：基础教育、培训系列教程

1998年

作者：（美）（J.考克斯）Jayce cox 余永进等译

本书介绍Windows95的各项功能和使用技巧。全书共分六章，内容包括Windows简介、处理文档、提高效率、常见问题解决、更改计算机设置与同事通信等。本书适于广大计算机用户使用。

ISBN: (纸本)7111061632

关键词：窗口软件学科:教材

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