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Search Results: 1 - 10 of 304911 matches for " W. L. Huang "
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Analysis of Flashover Characteristics under Nanosecond Pulsed Coaxial Electric Field  [PDF]
W. L. Huang, J. F. Cui, G. S. Sun
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2009, DOI: 10.4236/jemaa.2009.12015
Abstract: Under nanosecond pulsed coaxial electric field, surface flashover voltage over the interfaces between nylon 1010 and transformer oil increases almost linearly with gap length, and the steeper rising edge of applied pulse, the higher flash-over voltage. Surface flashover properties are closely related to the electric field at the triple junctions of solid-liquid-electrode and the field gradient along the interfaces. Although the increased difference between inner and outer electrode radii will enhance electric field strength at the triple junctions and nonuniformity degree of potential distribution along interfaces, it reduces simultaneously terribly the surface field strength of coaxial inner electrode, so that flashover voltage doesn’t descend, but ascends almost linearly with gap length. The average flashover strength in coaxial electric field can be estimated by that in uniform electric field for large enough difference between inner and outer electrode radii, which is useful to practical engineering design for coaxial pulsed power apparatuses.
Therapeutic Outcome of Botulinum Toxin Type A for Patients with Low Bladder Compliance Secondary to Spinal Cord Injury  [PDF]
H. Chen, M. P. Huang, T. H. Huang, C. H. Jiang, J. W. Zeng, L. L. Zhou, Q. L. Liu, Q. Q. Li, X. Y. Yang
Open Journal of Urology (OJU) , 2017, DOI: 10.4236/oju.2017.711024
Abstract: Objective: To evaluate the efficacy and safety of botulinum toxin type A (BTX-A) in treating patients with low bladder compliance (BC) secondary to spinal cord injury (SCI). Methods: From 2011 to 2016, we retrospected patients who received BTX-A injections for LBC secondary to SCI. The primary outcomes were urodynamic parameters including maximum detrusor pressure (Pdetmax), bladder compliance (BC). Related adverse events were recorded. Results: 72 SCI patients were selected (62 males, 10 females, age range 18 - 52 years; mean age 28.5 years). 12 weeks after BTX-A injection, Pdetmax decreased from 51.02 cmH2O to 28.31 cmH2O. BC increased from 3.64 ml/cmH2O to 10.08 ml/cmH2O. 12 patients had mild transient haematuria for 1 - 2 days. Conclusion: Intradetrusor BTX-A injection was effective and safe for patients with low BC secondary to SCI.
Water resources change in response to climate change in Changjiang River basin
Y. Huang,W. F. Yang,L. Chen
Hydrology and Earth System Sciences Discussions , 2010, DOI: 10.5194/hessd-7-3159-2010
Abstract: Doubtlessly, global climate change and its impacts have caught increasing attention from all sectors of the society world-widely. Among all those affected aspects, hydrological circle has been found rather sensitive to climate change. Climate change, either as the result or as the driving-force, has intensified the uneven distribution of water resources in the Changjiang (Yangtze) River basin, China. In turn, drought and flooding problems have been aggravated which has brought new challenges to current hydraulic works such as dike or reservoirs which were designed and constructed based on the historical hydrological characteristics, yet has been significantly changed due to climate change impact. Thus, it is necessary to consider the climate change impacts in basin planning and water resources management, currently and in the future. To serve such purpose, research has been carried out on climate change impact on water resources (and hydrological circle) in Changjiang River. The paper presents the main findings of the research, including main findings from analysis of historical hydro-meteorological data in Changjiang River, and runoff change trends in the future using temperature and precipitation predictions calculated based on different emission scenarios of the 24 Global Climate Modes (GCMs) which has been used in the 4th IPCC assessment report. In this research, two types of macro-scope statistical and hydrological models were developed to simulate runoff prediction. Concerning the change trends obtained from the historical data and the projection from GCMs results, the trend of changes in water resources impacted by climate change was analyzed for Changjiang River. Uncertainty of using the models and data were as well analyzed.
On the rigidity theorems for Lagrangian translating solitons in pseudo-Euclidean space II
R. L. Huang,R. W. Xu
Mathematics , 2014,
Abstract: Let $u$ be a smooth convex function in $\mathbb{R}^{n}$ and the graph $M_{\nabla u}$ of $\nabla u$ be a space-like translating soliton in pseudo-Euclidean space $\mathbb{R}^{2n}_{n}$ with a translating vector $\frac{1}{n}(a_{1}, a_{2}, \cdots, a_{n}; b_{1}, b_{2}, \cdots, b_{n})$, then the function $u$ satisfies $$ \det D^{2}u=\exp \left\{ \sum_{i=1}^n- a_i\frac{\partial u}{\partial x_{i}} +\sum_{i=1}^n b_ix_i+c\right\} \qquad \hbox{on}\qquad\mathbb R^n$$ where $a_i$, $b_i$ and $c$ are constants. The Bernstein type results are obtained in the course of the arguments.
Determination of OM/OC ratios and specific attenuation coefficients (SAC) in ambient fine PM at a rural site in southern Ontario: implications for emission sources, particle aging, and radiative forcing
T. W. Chan,L. Huang,W. R. Leaitch,S. Sharma
Atmospheric Chemistry and Physics Discussions , 2009,
Abstract: Ambient particulate matter (PM) samples were collected on quartz filters at a rural site in southern Ontario during intensive studies in 2005 and 2007. The concentrations of organic carbon (OC), pyrolysis organic carbon (POC), and elemental carbon (EC) were determined by thermal analysis. These results were compared to the organic aerosol mass concentration (OM) measured by an Aerodyne Aerosol Mass Spectrometer (AMS) and to the particle absorption coefficient (b_asp) obtained from a Radiance Research Particle Soot Absorption Photometer (PSAP). The total organic mass to organic carbon ratios (OM/OC) and specific attenuation coefficients (SAC) were also derived. According to the results, the POC mass is proportional to the approximated oxygen mass in the aerosols and OM/OC ratios can be estimated directly from thermal measurements. The study also suggests that the air masses from the south, with relatively low OC/EC ratios, high EC, sulphate contents and OM/OC ratios, were originated from urban and industrial emissions and subsequently experienced photo-oxidations in the atmosphere, implying that the oxygenated organics could come from both primary and secondary sources. Whereas the air masses from the north, with relatively high OC/EC ratios, low EC, sulphate contents and OM/OC ratios, were dominant by the background clean air with relatively larger contributions from biogenic emissions. The mean SAC derived from the 2005 and 2007 studies are 4.9 m2 g 1 and 3.8 m2 g 1, respectively. When POC mass approaching zero (i.e. the impact of atmospheric aging is minimized), the SAC for primary emitted soot is estimated to be 5.8 m2 g 1 and 6.3 m2 g 1 for the northern and southern air masses, respectively, supported by the corresponding values when particulate sulphate concentration approaches zero. A decreasing trend in the SAC value with atmospheric aging of the aerosol was observed at the site, suggesting that during the study, the light absorption enhancement due to the presence of coating on particles was likely to be offset by the decrease in light absorption caused by increasing soot particle diameter and collapsing of soot particle structure. This result may imply that model simulations of atmospheric warming by BC could be 50% too high.
Views and Experience on Patient Engagement in Healthcare Professionals and Patients—How Are They Different?  [PDF]
Eliza L. Y. Wong, Siufai Lui, Annie W. L. Cheung, Carrie H. K. Yam, Nicole F. Huang, Wilson W. S. Tam, Engkiong Yeoh
Open Journal of Nursing (OJN) , 2017, DOI: 10.4236/ojn.2017.76046
Abstract: A patient-centered approach is used to build a therapeutic alliance between patients and the healthcare professionals in care process which should be supported by a good engagement of both parties. The study aimed to explore the gap between healthcare professionals and patients on patient engagement in hospital. It was a cross-sectional survey. 2774 doctors and nurses from Department of Medicine of public hospitals completed the self-administered questionnaire and 1042 patients discharged from corresponding wards completed the telephone interviews. Participants were interviewed using structural questionnaires. The Mann-Whitney test or Pearson’s chi-square test was used to analyze the agreement between health-care professionals and patients on the views and experiences of patient engagement. A difference was considered to be statistically significant when the p-value was <0.05. Although both groups valued the importance of patient engagement, there was a discrepancy on understanding, views and experiences. More healthcare professionals particularly in nursing were concerned about the possible negative impact of the engagement. The majority of healthcare professionals reported that they engaged well with patients, and perceived more difficulties than patients did. The findings highlighted the mutual understanding of patient engagement, involvement and challenges encountered by both groups in Department of Medicine, which was crucial in efforts to provide meaningful patient engagement in regards to jurisdictions, health system, specialty, discipline and background of patients. It provided insight that a collaborative strategy involving both healthcare professional and patients might be an alternative approach to improving patient engagement.
Hao Z, Zheng L, Kluwe L, Huang W
International Journal of Nanomedicine , 2012, DOI: http://dx.doi.org/10.2147/IJN.S31856
Abstract: Corrigendum Corrigendum (2233) Total Article Views Authors: Hao Z, Zheng L, Kluwe L, Huang W Published Date May 2012 Volume 2012:7 Pages 2209 - 2210 DOI: http://dx.doi.org/10.2147/IJN.S31856 Received: 16 March 2012 Accepted: Published: 03 May 2012 Hao Z, Zheng L, Kluwe L, Huang W. Ferritin light chain and squamous cell carcinoma antigen 1 are coreceptors for cellular attachment and entry of hepatitis B virus. Int J Nanomedicine. 2012;7:827–834. 1. The third affiliation, for Weida Huang, was incorrectly given as: 3Laboratory for Synthetic Biology, Centers for Nano-Medicine, Shanghai, People’s Republic of China. The correct affiliation is as follows: 3Laboratory for Synthetic Biology, Centers for Nano-Medicine, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, People’s Republic of China. 2. Figures 1 and 2 have been corrected. Read the original article Post to: Cannotea Citeulike Del.icio.us Facebook LinkedIn Twitter Other articles by Dr Zhaojing Hao Ferritin light chain and squamous cell carcinoma antigen 1 are coreceptors for cellular attachment and entry of hepatitis B virus Readers of this article also read: Wine consumers’ environmental knowledge and attitudes: Influence on willingness to purchase Berberine: metabolic and cardiovascular effects in preclinical and clinical trials Prolonged rupture of membranes in term infants: should all babies be screened? Lyme disease: the next decade Intercellular cancer collisions generate an ejected crystal comet tail effect with fractal interface embryoid body reassembly transformation Comparison of two treatments for coxarthrosis: local hyperthermia versus radio electric asymmetrical brain stimulation Post intrastromal corneal ring segments insertion complicated by Candida parapsilosis keratitis Cancer stem cell theory: therapeutic implications for nanomedicine What are the roles of carers in decision-making for amyotrophic lateral sclerosis multidisciplinary care? Oral biofilms: molecular analysis, challenges, and future prospects in dental diagnostics
Time-Opening Suprapubic Catheter versus Intermittent Catheter for Male Patients with Spinal Cord Injury (Spinal Level above Level C5)  [PDF]
Hui Chen, P. Tang, R. B. Ou, J. W. Zeng, M. P. Huang, Q. L. Liu, Q. Q. Li, J. B. Huang, T. H. Huang, Chonghe Jiang, Keji Xie
Open Journal of Urology (OJU) , 2016, DOI: 10.4236/oju.2016.69025
Abstract: Objective: To compare the short-time complications associated with time-opening suprapubic catheter (SPT) versus intermittent catheter (IC) in male patients with spinal cord injury (above level C5). Methods: A prospective review of records was carried out to identify SCI patients managed with SPT or IC between 2011 and 2016. The complications included renal function (Serum creatinine), urinary tract infection (UTI), bladder stones, urethral complications, scrotal, and gross hematuria. Patients were followed at week 4, 3 and 6 months; the urodynamic assessment was repeated at 6 months. Results: A total of 30 patients (11 SPT, 19 IC) were recruited in this trial. There is no significant difference between the two catheter groups for the entire out-come. Scrotal abscesses and urethral stricture were only seen in patients with IC. Conclusions: SPT has similar urological complication with IC for SCI patients (above level C5) except the incidence of scrotal abscesses and urethral stricture.
Simulating Displacement and Velocity Signals by Piezoelectric Sensor in Vibration Control Applications
G. J. Sheu,S. M. Yang,W. L. Huang
Smart Materials Research , 2012, DOI: 10.1155/2012/390873
Abstract: Intelligent structures with built-in piezoelectric sensor and actuator that can actively change their physical geometry and/or properties have been known preferable in vibration control. However, it is often arguable to determine if measurement of piezoelectric sensor is strain rate, displacement, or velocity signal. This paper presents a neural sensor design to simulate the sensor dynamics. An artificial neural network with error backpropagation algorithm is developed such that the embedded and attached piezoelectric sensor can faithfully measure the displacement and velocity without any signal conditioning circuitry. Experimental verification shows that the neural sensor is effective to vibration suppression of a smart structure by embedded sensor/actuator and a building structure by surface-attached piezoelectric sensor and active mass damper. 1. Introduction Composite structures with surface-mounted or -embedded piezoelectric materials as sensors and/or actuators have been investigated for they possess mechanical simplicity, efficient electromechanical energy conversion, and ability to integrate within structures. Much attention to date has been on analysis and experiment of active vibration control by using piezoelectric sensors and actuators. Review on using piezoelectric materials to MEMS sensor [1], morphing aircraft [2], and structural repair [3] have been reported. Yang and Chiu [4] were among the first to embedded piezoelectric sensors inside composite-laminated structures. The sensors were found to have stiffening effects [5–8]. Among the applications; however, piezoelectric sensor measurement was considered as displacement signal [9–11], velocity signal [12, 13], or strain rate signal [14, 15]. There seems to be inconsistency on the signal nature, and signal conditioning circuit is often necessary. It is known that effective vibration control requires the system state of displacement and velocity; however, such signals are difficult to acquire as they are often obtained either by accelerometer with hardware integration for velocity or by piezoelectric sensor assuming velocity measurement. Accurate sensor dynamics modeling is required for designing a controller immune to modeling discrepancy. Artificial neural networks with the ability of self-learning, generalization, and robustness have been shown suitable for simulating sensor dynamics by system identification. The concept of neural sensor design is to use the piezoelectric sensor measurement to estimate online both the displacement and velocity at the sensor location. Recent development
Atomically flat interface between a single-terminated LaAlO3 substrate and SrTiO3 thin film is insulating
Z. Q. Liu,Z. Huang,W. M. Lü,K. Gopinadhan
AIP Advances , 2012, DOI: 10.1063/1.3688772
Abstract: The surface termination of (100)-oriented LaAlO3 (LAO) single crystals was examined by atomic force microscopy and optimized to produce a single-terminated atomically flat surface by annealing. Then the atomically flat STO film was achieved on a single-terminated LAO substrate, which is expected to be similar to the n-type interface of two-dimensional electron gas (2DEG), i.e., (LaO)-(TiO2). Particularly, that can serve as a mirror structure for the typical 2DEG heterostructure to further clarify the origin of 2DEG. This newly developed interface was determined to be highly insulating. Additionally, this study demonstrates an approach to achieve atomically flat film growth based on LAO substrates.
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