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Search Results: 1 - 10 of 51729 matches for " Winson Y. Cheung "
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After the Treatment Phase of Colorectal Cancer Care: Survivorship and Follow-Up  [PDF]
Maria Y. Ho, Winson Y. Cheung
Journal of Cancer Therapy (JCT) , 2012, DOI: 10.4236/jct.2012.326125
Abstract: The number of long-term colorectal cancer (CRC) survivors has increased substantially over the past three decades due to both ongoing advances in early detection and improvements in cancer therapies. Adult survivors of CRC experience chronic health conditions due to normal issues associated with aging, which is further compounded by the long-term adverse effects of having had cancer and anti-cancer therapies. In addition, they are at a higher risk for CRC recurrences, new primary cancers, and other co-morbidities. This article will provide an overview of the clinical care of adult survivors of CRC. Epidemiologic data will be presented followed by a discussion of the approach to the care of long-term adult survivors of CRC, including surveillance of recurrences and new primary cancers, interventions to manage both physical and psychological consequences of cancer and its treatments, and strategies to address concerns related to unemployment and disability. Finally, we will explore the challenges of healthcare delivery, especially with respect to the coordination of follow-up between cancer specialists and primary care physicians, so as to ensure that all of the survivor’s health needs are met promptly and appropriately.
Slowly divergent geodesics in moduli space
Y. Cheung
Mathematics , 2005,
Abstract: Slowly divergent geodesics in the moduli space of Riemann surfaces of genus at least 2 are constructed via cyclic branched covers of the torus. Nonergodic examples (i.e. geodesics whose defining quadratic differential has nonergodic vertical foliation) diverging to infinity at sublinear rates are constructed using a Diophantine condition. Examples with an arbitrarily slow prescribed growth rate are also exhibited.
Coagulated Rhythm [Review of Li, Li Fang and Hai Tao Yang. Coagulated Rhythm: the Theoretical Framework and Aesthetic Interpretation of Naxi Musical Iconography. Kunming: Yunnan People’s Press, 2002, iii+337]. Coagulated Rhythm [Review of Li, Li Fang and Hai Tao Yang. Coagulated Rhythm: the Theoretical Framework and Aesthetic Interpretation of Naxi Musical Iconography. Kunming: Yunnan People’s Press, 2002, iii+337].
Paul Y. Cheung
Ilha do Desterro , 2008,
Abstract: Heterogeneity is a recurrent theme and simultaneously a research focus of Cultural Studies. Not unrelated to this is the focus on complex diachronic and synchronic variability in language and discourse as demonstrated within the broad range of epistemologies in Linguistics and Sociolinguistics in particular. The ongoing debate concerning disciplinary boundaries of Cultural Studies and Sociolinguistics and related entities such as Anthropology, Gender Studies, Media Studies and Sociology is itself indicative of heterogeneity, complexity and variability. These themes emerge from the rich descriptive study offered through a kind of kaleidoscopic vision that is the monograph Coagulated Rhythm: the Theoretical Framework and Aesthetic Interpretation of Naxi Musical Iconography. Heterogeneity is a recurrent theme and simultaneously a research focus of Cultural Studies. Not unrelated to this is the focus on complex diachronic and synchronic variability in language and discourse as demonstrated within the broad range of epistemologies in Linguistics and Sociolinguistics in particular. The ongoing debate concerning disciplinary boundaries of Cultural Studies and Sociolinguistics and related entities such as Anthropology, Gender Studies, Media Studies and Sociology is itself indicative of heterogeneity, complexity and variability. These themes emerge from the rich descriptive study offered through a kind of kaleidoscopic vision that is the monograph Coagulated Rhythm: the Theoretical Framework and Aesthetic Interpretation of Naxi Musical Iconography.
Intensity modulated radiotherapy: advantages, limitations and future developments
Cheung K.Y.
Biomedical Imaging and Intervention Journal , 2006, DOI: 10.2349/biij.2.1.e19
Abstract:
A divergent Teichmuller geodesic with uniquely ergodic vertical foliation
Y. Cheung,H. Masur
Mathematics , 2005,
Abstract: We construct an example of a quadratic differential whose vertical foliation is uniquely ergodic and such that the Teichmuller geodesic determined by the quadratic differential diverges in the moduli space of Riemann surfaces.
Minimal nonergodic directions on genus 2 translation surfaces
Y. Cheung,H. Masur
Mathematics , 2005,
Abstract: It is well-known that on any Veech surface, the dynamics in any minimal direction is uniquely ergodic. In this paper it is shown that for any genus 2 translation surface which is not a Veech surface there are uncountably many minimal but not uniquely ergodic directions.
等离子炬-质谱技术测定白菜、萝卜、大豆、土壤中的痕量锰、钴、镍、铜、锌、砷、钼和锶
金秀华,Y.,Y.,Cheung
分析化学 , 1991,
Abstract: 营养学家们已经确定了锰、钻、镍、铜、锌、砷、钼和锶等10多种人体所必需的痕量元素,它们对于维持人体的健康和长寿起着重要的生理作用。本文首次应用等离子炬-质谱技术测定了白菜、萝卜、大豆和土壤中这八种痕量元素的含量,并报告了它们的测定结果和标准偏差,其中土壤样品的测定值与参考值相比较,经T检验,两者之间在统计学上,没有显著性差异。实验证明该方法可对多种痕量元素同时定性、定量分析。操作简便、快速,灵敏度高;方法准确可靠,重现性好。为开展食品卫生学、营养学的研究,提供了更为先进的测试技术。
Effectiveness of adjustable dorsiflexion night splint in combination with accommodative foot orthosis on plantar fasciitis
Winson C. C. Lee, PhD,W. Y. Wong, PhD,Eddy Kung, MSc,Aaron K. L. Leung, PhD
Journal of Rehabilitation Research and Development , 2013, DOI: 10.1682/jrrd.2011.09.0181
Abstract: Foot orthoses and night splints have been used separately to treat patients with plantar fasciitis, but were not always successful. Combined use of both orthoses might give better outcomes. This study evaluated the effectiveness of a soft and self-adjustable dorsiflexion night splint in combination with an accommodative foot orthosis for patients with plantar fasciitis. Twenty-eight patients were assigned to group A (foot orthosis only) and group B (combination of foot orthosis and dorsiflexion night splints). A Foot Function Index (FFI) questionnaire was used to evaluate the pain and functions of feet just before, 2 weeks after, and 8 weeks after the treatments. Results showed that subjects in group B had significantly reduced pain scores at week 2 (p < 0.001) and week 8 (p < 0.001). In group A, no statistical differences were noted in the pain (p = 0.15), disability (p = 0.56), activity limitation (p = 0.75), and total FFI (p = 0.35) scores for the three time periods. The application of foot orthoses with adjustable dorsiflexion night splints was found to be more effective than the application of foot orthoses alone in relieving foot pain in patients with plantar fasciitis.
Price Trends in a Simplified Model of the Wealth Game
W. Y. Cheung,K. Y. Michael Wong
Physics , 2009,
Abstract: We consider a simplified version of the Wealth Game, which is an agent-based financial market model with many interesting features resembling the real stock market. Market makers are not present in the game so that the majority traders are forced to reduce the amount of stocks they trade, in order to have a balance in the supply and demand. The strategy space is also simplified so that the market is only left with strategies resembling the decisions of optimistic or pessimistic fundamentalists and trend-followers in the real stock market. A dynamical phase transition between a trendsetters' phase and a bouncing phase is discovered in the space of price sensitivity and market impact. Analysis based on a semi-empirical approach explains the phase transition and locates the phase boundary. A phase transition is also observed when the fraction of trend-following strategies increases, which can be explained macroscopically by matching the supply and demand of stocks.
The emerging role of autophagy in Parkinson's disease
Zelda H Cheung, Nancy Y Ip
Molecular Brain , 2009, DOI: 10.1186/1756-6606-2-29
Abstract: Parkinson's disease is a neurodegenerative disorder characterized by the degeneration of neurons in the substantia nigra pars compacta of the brain. On a cellular level, neuronal loss is accompanied by neurite degeneration and the presence of cytoplasmic inclusions known as Lewy bodies. PD is the most common neurodegenerative movement disorder and the second most common neurodegenerative disease, with the prevalence rising from 1% at age 65 to about 4-5% at age 85 [1]. Most of the PD cases are sporadic, although familial PD with autosomal dominant or autosomal recessive mutations also account for about 5% of all PD cases [2]. PD patients suffer from resting tremor, bradykinesia, muscle rigidity and postural instability. While the deterioration of motor functions observed in PD patients is predominantly attributable to the degeneration of dopaminergic neurons in the substantia nigra, neuron loss in other brain regions, including locus ceruleus and raphe nucleus, are also observed in post-mortem brains of PD patients [3].Despite the prevalence of the disease, current treatment only ameliorates symptoms by attempting to reverse dopaminergic deficits. Extensive effort has therefore been directed at explicating the pathogenic mechanisms of PD, in hope of identifying targets that would enable reduction of neuronal loss and halting of disease progression. Various pathogenic mechanisms have been associated with neuronal loss in PD, including oxidative stress, mitochondrial dysfunction, protein aggregation and abnormality with the ubiquitin-proteasome pathway [3]. In particular, identification of autosomal dominant and autosomal recessive mutations in cases of familial PD has significantly contributed to our current understanding of the pathogenesis of PD. For example, autosomal dominant A53T and A30P mutation of alpha-synuclein, the main constituent of Lewy bodies, is associated with familial PD [4,5]. Interestingly, mutant alpha-synucleins are more prone to oligomerization
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