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Collective Bands in the Neutron—Rich 110Ru Nucleus

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Chinese Physics Letters 2003年第3期20卷 350-353页

作者：姜卓 j.H.hamilton 等 DepartmentofPhysics TsinghuaUniversityBeijing100084 DepartmentofPhysics VanderbiltUniversityNashvilleTN37235USA

High spin states in neutron-rich 110Ru nucleus have been investigated by measuring high-fold prompt γ-ray coincidence events of the spontaneous fission of 252Cf with the Gammasphere detector array. The ground-state band and the γ-vibrational band have been confirmed and extended with spin up to 18 and 13, respectively. The other three side bands, two proposed as two-quasiparticle bands and one proposed as a four-quasiparticle band, have been observed for the first time. The possible configurations for the quasi-particle bands are discussed. The cranked shell model calculations show that 110Ru nucleus may have oblate triaxial deformation with parameters β2 = -0.30 and γ = 24°, and the band crossing in the yrast band is due to the alignment of a pair of h11/2 neutrons.

关键词： Gamma rays

Collective Computation,Information Flow,and the Emergence of Hunter-Gatherer Small-Worlds

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j.urnal of Social Computing 2022年第1期3卷 18-37页

作者： Marcus j.hamilton the Department of Anthropology University of Texas at San AntonioSan AntonioTX 78249USA.

Two key features of human sociality are anatomically complex brains with neuron-dense cerebral cortices,and the propensity to form complex social networks with *** brains and complex social networks facilitate flows of fitness-enhancing energy and information at multiple scales of social ***,we consider how these flows interact to shape the emergence of macroscopic regularities in hunter-gatherer macroecology relative to other mammals and non-human *** computation is the processing of information by complex adaptive systems to generate inferences in order to solve adaptive *** hunter-gatherer societies the adaptive problem is to resolve uncertainty in generative models used to predict complex environments in order to maximize inclusive *** macroecological solution is to link complex brains in social networks to form collective brains that perform collective *** developing theory and analyzing data,the author shows hunter-gatherers bands of~16 people,or~4 co-residing families,form the largest collective brains of any social ***,because individuals,families,and bands interact at multiple time scales,these fission-fusion dynamics lead to the emergence of the macroscopic regularities in hunter-gatherer macroecology we observe in cross-cultural *** results show how computation is distributed across spatially-extended social networks forming decentralized knowledge systems characteristic of hunter-gatherer *** flow of information at scales far beyond daily interactions leads to the emergence of small-worlds where highly clustered local interactions are embedded within much larger,but sparsely connected multilevel metapopulations.

关键词： complex adaptive systems hierarchically modular networks collective brains macroecology allometry mammals primates

Observation of Rotational Bands in Neutron—Rich ^106Mo Nucleus

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Chinese Physics Letters 2002年第2期19卷 180-183页

作者：许瑞清 j.H.hamilton DepartmentofPhysics TsinghuaUniversityBeijing100084 DepartmentofPhysics VanderbiltUniversityNashvilleTN37235USA

The rotational bands up to a spin of16in the neutron-rich106Mo nucleus have been investigated by measuring high-fold prompt-ray coincidence events following spontaneous fission of252Cf with a Gammasphere detector array. The ground-state band, the one-phonon and two-phonon-vibrational bands, as well as a quasi-particle band have been confirmed and expanded. Theother four collective rotational bands, three proposed as two-quasi-particle bands and one proposed as a-vibrational band, have been newly observed. The characteristics of thesecollective bands and the possible configurations for the quasi-particle bands are discussed.

关键词： Gamma rays

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早期发生的严重糖尿病相关性微血管并发症

世界核心医学期刊文摘（儿科学分册） 2005年第2期1卷 41-41页

作者： hamilton j. Brown M. Silver R. Daneman D. 贺莉 Dr.Division of EndocrinologyHospital for Sick Children555 University Ave TorontoOnt.M5G 1X8Canada

1例患有1型糖尿病的16岁女孩,虽然血糖控制得很好,但在1个月内发展成疼痛性外周神经疾病,1年内发展成增生性视网膜病。

关键词：增生性视网膜病疼痛性外周神经

Restoring the gut microbiome for the treatment of inflammatory bowel diseases

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World j.urnal of Gastroenterology 2014年第13期20卷 3468-3474页

作者： j.ssica R Allegretti Matthew j.hamilton Division of Gastroenterology Brigham and Women’s Hospital and Harvard Medical SchoolBostonMA 02115United States

Fecal microbiota transplantation (FMT) is considered to be a highly successful therapy for recurrent and refractory Clostridium difficile infection (CDI) based on recent clinical trials. The pathogenesis of inflammatory bowel diseases (IBD) is thought to be due in part to perturbations in the gut microflora that disrupt homeostasis. FMT restores essential components of the microflora which could reverse the inflammatory processes observed in IBD. Case reports and series for the treatment of IBD by FMT have shown promise with regards to treatment success and safety despite the limitations of the reporting. Future studies will determine the optimal delivery and preparation of stool as well as the conditions under which the recipient will derive maximal benefit. The long term consequences of FMT with regards to infection, cancer, auto-immune, and metabolic diseases are not known and will require continued regulation and study. Despite these limitations, FMT may be beneficial for the treatment of ulcerative colitis and Crohn’s disease, particularly those with concurrent CDI or with pouchitis.

关键词： Crohn’ s, Ulcerative colitis, Microbiota, Fecal transplantation, Dysbiosis, Pouchitis, Clostridium difficile, Probiotic

Reinvestigation of Collective Bands in ^107Tc

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Chinese Physics Letters 2009年第9期26卷 101-104页

作者：顾龙朱胜江 j. H. hamilton A. V. Ramayya j. K. Hwang 刘少华王建国罗亦孝 j. O. Rasmussen 李一阳丁怀博李科徐强杨韵颐 Department of Physics Tsinghua University Beijing 100084 Department of Physics Vanderbilt University Nashville Tennessee 37235 USA Lawrence Berkeley National Laboratory Berkeley California 94720 USA

The high spin states of a neutron-rich ^107 Tc nucleus are reinvestigated by observing prompt γ-rays from the spontaneous fission of ^252 Cf. The previous level scheme is updated. A collective band based on the π5/2- [303] orbital is confirmed and extended. Inconsistencies in the configuration assignments for a type of positive parity bands of odd-A 105,107,109 Tc in the previous reports are clarified according to the g factor calculations. A new band based on the 1499.5 keV level in ^107Tc is proposed as a two-phonon γ-vibrational band.

关键词： No English Keyword

Softening of phonon spectra in metallic glasses

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npj.Computational Materials 2016年第1期2卷 31-35页

作者： Reza Mahj.ub Nicholas E hamilton Kevin j.Laws Michael Ferry School of Materials Science and Engineering The University of New South WalesSydneyNSWAustralia

The vibrational spectra of a series of MgZnCa amorphous alloys were computed using density functional theory and implementing the small displacement *** atomic structures of the alloys were obtained by ab initio molecular dynamics *** vibrational thermodynamic properties were calculated as a function of temperature and,in particular,the specific heat at low temperature was approximated by temperature cubed based on the Debye *** computed the contribution of Mg vibrations to the specific heat and investigated the softening of Mg phonon spectra,where the maximum allowed vibrational frequency is lowered and highly collective diffusion processes are *** statistical correlation between the reported critical casting thickness of the alloys and softening of Mg phonons was *** calculations were performed for two distinctively different amorphous ZrTiCuAl alloys with large and small reported critical casting thickness,*** findings were consistent with those of the MgZnCa alloys.

关键词： alloys softening casting

High-spin states in neutron-rich ^(102)Mo nucleus

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Chinese Physics C 2009年第S1期33卷 199-201页

作者：杨韵颐朱胜江 j. H. hamilton A. V. Ramayya j. K. Hwang j. O. Rasmussen 丁怀博王建国徐强顾龙 Department of Physics Tsinghua University Department of Physics Vanderbilt University

High-spin states in neutron-rich 102Mo nucleus have been studied by measuring the prompt γ-rays in the spontaneous fission of 252Cf. The previous level scheme has been updated and some new levels and transitions are identified. The one-phonon γ-band is expanded and a band head level of the two-phonon γ- band is proposed. The systematic characteristics of yrast bands, one-phonon γ-bands, two-phonon γ-bands and quasi-particle bands in 102Mo, 104Mo and 106Mo are discussed.

关键词： spontaneous fission neutron-rich nucleus γ-band quasi-particle band

Search for Double γ-Vibrational Bands in Neutron-Rich ^105Mo Nucleus

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Chinese Physics Letters 2006年第12期23卷 3222-3225页

作者：丁怀博朱胜江 j. H. hamilton A. V. Ramayya j. K. Hwang Y. X. Luo j. O. Rasmussen I. Y. Lee 车兴来陈永静李明亮 Department of Physics Tsinghua University Beijing 100084 Department of Phvsics Vanderbilt University Nashville Tennessee 37235 USA Lawrence Berkeley National Laboratory Berkeley California 94720 USA

Levels in the neutron-rich ^105Mo nucleus have been investigated by observing prompt γ-rays following the spontaneous fission fragments of^252 Cf with the Gammasphere detector array. The yrast band has been confirmed and updated. The other two collective bands with the band head levels at 870.5 and 1534.6 keV are newly observed, and they are suggested as the candidates for one-phonon K= 9/2 and two-phonon K = 13/2 double γ-vibrational bands, respectively. Systematic characteristics of these bands have been discussed.

关键词： Double γ-Vibrational Bands Systematic characteristics