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Degradation of endocrine disruptor bisphenol A in drinking water by ozone oxidation

XU Bin, GAO Naiyun, RUI Min, WANG Hong, WU Haihui

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 3,   Pages 350-356 doi: 10.1007/s11783-007-0060-y

Abstract: The effects of applied HO dose in ozone oxidation of BPA were also examined in this study.The O-HO processes proved to have similar effects on the degradation of BPA by ozone oxidation.

Keywords： BPA     scanning     reactor     process     O-HO    

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Optimization of the O/HO process with response surface methodology for pretreatment of mother liquor

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1371-5

Abstract:

• Real ML-GFW with high salinity and high organics was degraded by O3/H2O2 process.

Keywords： High salinity     High organic matters     Gas field wastewater     O3/H2O2    

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Epidemic obesity in children and adolescents: risk factors and prevention

Eun Young Lee, Kun-Ho Yoon

Frontiers of Medicine 2018, Volume 12, Issue 6,   Pages 658-666 doi: 10.1007/s11684-018-0640-1

Abstract: The prevalence of obesity among children and adolescents (aged 2–18 years) has increased rapidly, with more than 100 million affected in 2015. Moreover, the epidemic of obesity in this population has been an important public health problem in developed and developing countries for the following reasons. Childhood and adolescent obesity tracks adulthood obesity and has been implicated in many chronic diseases, including type 2 diabetes, hypertension, and cardiovascular disease. Furthermore, childhood and adolescent obesity is linked to adulthood mortality and premature death. Although an imbalance between caloric intake and physical activity is a principal cause of childhood and adolescent obesity, environmental factors are exclusively important for development of obesity among children and adolescents. In addition to genetic and biological factors, socioenvironmental factors, including family, school, community, and national policies, can play a crucial role. The complexity of risk factors for developing obesity among children and adolescents leads to difficulty in treatment for this population. Many interventional trials for childhood and adolescent obesity have been proven ineffective. Therefore, early identification and prevention is the key to control the global epidemic of obesity. Given that the proportion of overweight children and adolescents is far greater than that of obesity, an effective prevention strategy is to focus on overweight youth, who are at high risk for developing obesity. Multifaceted, comprehensive strategies involving behavioral, psychological, and environmental risk factors must also be developed to prevent obesity among children and adolescents.

Keywords： obesity     children     adolescents     epidemiology     risk factor     prevention    

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The Shanghai Corporate Pavilion design for World Expo in Shanghai 2010

Yung Ho CHANG

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 4,   Pages 519-521 doi: 10.1007/s11709-010-0093-3

Abstract: New technologies are becoming today’s basic building blocks. This paper presents a case study of the Shanghai Corporate Pavilion for the 2010 World Expo in Shanghai. From the shape of the building to the use of solar energy, the Shanghai Corporate Pavilion incorporates the state-of-art technologies to convey the spirit of the architecture. It addresses the pressing issue of energy, environment, and sustainability and reflects the spirit of Shanghai as a historically progressive yet still fast moving international metropolis.

Keywords： 2010 World Expo     LED lights     solar energy    

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Towards a respondent-preferred ki-anonymity model

Kok-Seng WONG,Myung Ho KIM

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 9,   Pages 720-731 doi: 10.1631/FITEE.1400395

Abstract: Recently, privacy concerns about data collection have received an increasing amount of attention. In data collection process, a data collector (an agency) assumed that all respondents would be comfortable with submitting their data if the published data was anonymous. We believe that this assumption is not realistic because the increase in privacy concerns causes some respondents to refuse participation or to submit inaccurate data to such agencies. If respondents submit inaccurate data, then the usefulness of the results from analysis of the collected data cannot be guaranteed. Furthermore, we note that the level of anonymity (i.e., -anonymity) guaranteed by an agency cannot be verified by respondents since they generally do not have access to all of the data that is released. Therefore, we introduce the notion of -anonymity, where is the level of anonymity preferred by each respondent . Instead of placing full trust in an agency, our solution increases respondent confidence by allowing each to decide the preferred level of protection. As such, our protocol ensures that respondents achieve their preferred -anonymity during data collection and guarantees that the collected records are genuine and useful for data analysis.

Keywords： Anonymous data collection     Respondent-preferred privacy protection     k-anonymity    

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Analyzing the distinguishing factors that affect childhood obesity in South Korea

So Jung Yang, Hun-Sung Kim, Kun-Ho Yoon

Frontiers of Medicine 2018, Volume 12, Issue 6,   Pages 707-716 doi: 10.1007/s11684-018-0660-x

Abstract:

Understanding obesity in children is crucial because it can lead to adulthood obesity and result in fatal chronic diseases. Distinctive factors associated with obesity in adults have been described, but distinctive factors related to children remain unclear. We analyzed the correlation between the percentage of body mass index and lifestyle habits by conducting surveys on physical, nutritional, and psychological factors, and we used annual physical examination data to compare different traits among elementary school students (n = 197) and middle school students (n = 461). Our study revealed that the computing hours in elementary school students with overweight and obesity were significantly correlated with the percentage of body mass index (r = 0.29 on school days and r = 0.35 on days off, all P<0.05). No statistically significant difference was found (all P>0.05) in the computing hours of middle school students with overweight and obesity. Childhood obesity can cause depression and reduce children’s quality of life because of their distorted body perception. In conclusion, physical factors directly affecting childhood obesity and psychological and environmental factors surrounding a child should be considered.

Keywords： screen time     quality of life     eating habits     childhood obesity     percentage of body mass index    

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Simultaneous removal of total oxidizable carbon, phosphate and various metallic ions from HO solution

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 4,   Pages 470-482 doi: 10.1007/s11705-022-2231-6

Abstract: aminopropyltriethoxy silane for the simultaneous removal of various impurities from aqueous 30% H2O2O<

Keywords： adsorption     zirconia     total oxidizable carbon     phosphate     metallic ions     hydrogen peroxide    

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photocatalytic performance through the evolution of the properties due to the phase transition from NaBiO·2HO

Frontiers in Energy 2022, Volume 16, Issue 3,   Pages 471-482 doi: 10.1007/s11708-021-0778-4

Abstract: The phase transition process of a photocatalytic system from NaBiO3·2H2O to BiOproper amount of BiO2–x on the surface of NaBiO3·2H2OA fully covered BiO2–x on NaBiO3·2H2O results in a

Keywords： composite construction     distribution     BiO2–x     evolution of defects    

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A Review on the 3D Printing of Functional Structures for Medical Phantoms and Regenerated Tissue and Organ Applications

Kan Wang, Chia-Che Ho, Chuck Zhang, Ben Wang

Engineering 2017, Volume 3, Issue 5,   Pages 653-662 doi: 10.1016/J.ENG.2017.05.013

Abstract:

Medical models, or “phantoms,” have been widely used for medical training and for doctor-patient interactions. They are increasingly used for surgical planning, medical computational models, algorithm verification and validation, and medical devices development. Such new applications demand high-fidelity, patient-specific, tissue-mimicking medical phantoms that can not only closely emulate the geometric structures of human organs, but also possess the properties and functions of the organ structure. With the rapid advancement of three-dimensional (3D) printing and 3D bioprinting technologies, many researchers have explored the use of these additive manufacturing techniques to fabricate functional medical phantoms for various applications. This paper reviews the applications of these 3D printing and 3D bioprinting technologies for the fabrication of functional medical phantoms and bio-structures. This review specifically discusses the state of the art along with new developments and trends in 3D printed functional medical phantoms (i.e., tissue-mimicking medical phantoms, radiologically relevant medical phantoms, and physiological medical phantoms) and 3D bio-printed structures (i.e., hybrid scaffolding materials, convertible scaffolds, and integrated sensors) for regenerated tissues and organs.

Keywords： 3D printing     3D bioprinting     Medical phantom     Regenerated tissue/organ     Scaffold    

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Is atmospheric oxidation capacity better in indicating tropospheric O formation?

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 5, doi: 10.1007/s11783-022-1544-5

Abstract: ListItem>

● This study summarizes and evaluates different approaches that indicate O<

Keywords： O3     AOC     O3 formation regime    

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Prediction of selected biodiesel fuel properties using artificial neural network

Solomon O. GIWA,Sunday O. ADEKOMAYA,Kayode O. ADAMA,Moruf O. MUKAILA

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 433-445 doi: 10.1007/s11708-015-0383-5

Abstract: Biodiesel is an alternative fuel to replace fossil-based diesel fuel. It has fuel properties similar to diesel which are generally determined experimentally. The experimental determination of various properties of biodiesel is costly, time consuming and a tedious process. To solve these problems, artificial neural network (ANN) has been considered as a vital tool for estimating the fuel properties of biodiesel, especially from its fatty acid (FA) composition. In this study, four ANNs have been designed and trained to predict the cetane number (CN), flash point (FP), kinematic viscosity (KV) and density of biodiesel using ANN with logsig and purelin transfer functions in the hidden layer of all the networks. The five most prevalent FAs from 55 feedstocks found in the literature utilized as the input parameters for the model are palmitic, stearic, oleic, linoleic and linolenic acids except for density network with a sixth parameter (temperature). Other FAs that are present in the biodiesels have been considered based on the number of carbon atom chains and the level of saturation. From this study, the prediction accuracy and the average absolute deviation of the networks are CN (96.69%; 1.637%), KV (95.80%; 1.638%), FP (99.07%; 0.997%) and density (99.40%; 0.101%). These values are reasonably better compared to previous studies on empirical correlations and ANN predictions of these fuel properties found in literature. Hence, the present study demonstrates the ability of ANN model to predict fuel properties of biodiesel with high accuracy.

Keywords： biodiesel     fuel properties     artificial neural network     fatty acid     prediction    

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Availability of wind energy resource potential for power generation at Jos, Nigeria

O. O. Ajayi, R. O. Fagbenle, J. Katende, J. O. Okeniyi

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 376-385 doi: 10.1007/s11708-011-0167-5

Abstract: The objective of this study was to assess the potential viability of the wind resource potential in Jos, Plateau state, Nigeria for power generation. The monthly mean wind speeds that span from 1987 to 2007 were employed to statistically analyze the monthly, annual and seasonal potentials of the wind energy resources at the site. Besides, the results were employed together with two models of wind energy conversion system to simulate the likely average output power. The outcome showed that Jos was suitable as a site for wind farm projects of varying sizes and that MW·h to GW·h of electricity is likely to be produced per period of months, seasons and years. The average wind speed range at the site was also estimated to be between 6.7 and 11.8 m/s across the months, years and seasons.

Keywords： green electricity     renewable resources     Weibull statistics     Jos     Nigeria    

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Selective oxidation of o -nitrotoluene to o -nitrobenzaldehyde with metalloporphyrins as biomimetic catalysts

Xinling WANG, Yuanbin SHE,

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 4,   Pages 453-456 doi: 10.1007/s11705-009-0167-8

Abstract: Selective oxidation of -nitrotoluene to -nitrobenzaldehyde with metalloporphyrins as biomimetic catalysts was studied. The peripheral substituent around porphyrin rings and various process parameters of NaOH concentration, reaction temperature, reaction time and oxygen pressure all affect the selectivity of -nitrobenzaldehyde. Further, 82.0% selectivity of -nitrobenzaldehyde was achieved under the optimum conditions: 1.0×10mol•L of T(-NO)PPFeCl catalyst, 2.5mol•L of NaOH, 0.2mol•L of -nitrotoluene, 45°C and 2.0MPa for 6h.

Keywords： -nitrobenzaldehyde     temperature     biomimetic     selectivity     pressure    

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Capsule endoscopy—A mechatronics perspective

Lin LIN, Mahdi RASOULI, Andy Prima KENCANA, Su Lim TAN, Kai Juan WONG, Khek Yu HO, Soo Jay PHEE

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1,   Pages 33-39 doi: 10.1007/s11465-011-0203-5

Abstract:

The recent advances in integrated circuit technology, wireless communication, and sensor technology have opened the door for development of miniature medical devices that can be used for enhanced monitoring and treatment of medical conditions. Wireless capsule endoscopy is one of such medical devices that has gained significant attention during the past few years. It is envisaged that future wireless capsule endoscopies replace traditional endoscopy procedures by providing advanced functionalities such as active locomotion, body fluid/tissue sampling, and drug delivery. Development of energy-efficient miniaturized actuation mechanisms is a key step toward achieving this goal. Here, we review some of the actuators that could be integrated into future wireless capsules and discuss the existing challenges.

Keywords： wireless capsule endoscopy     ingestible medical device     in-body medical device     medical robot     miniature actuator    

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Rh2O3/hexagonal CePO4 nanocatalysts for N2O decomposition

Huan Liu, Zhen Ma

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 586-593 doi: 10.1007/s11705-017-1659-6

Abstract: Rh(NO ) was then used as a precursor for the impregnation of Rh O onto these CePO materials.The Rh O supported on the CePO nanowires was much more active for the catalytic decomposition of NO than the Rh O supported on CePO nanorods.of both catalysts as a function of time on stream was studied and the influence of the co-feed (CO , O, H O or O /H O) on the N O decomposition was also investigated.

Keywords： Rh2O3     CePO4     N2O decomposition    

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Title Author Date Type Operation

Degradation of endocrine disruptor bisphenol A in drinking water by ozone oxidation

XU Bin, GAO Naiyun, RUI Min, WANG Hong, WU Haihui

Journal Article

Optimization of the O/HO process with response surface methodology for pretreatment of mother liquor

Journal Article

Epidemic obesity in children and adolescents: risk factors and prevention

Eun Young Lee, Kun-Ho Yoon

Journal Article

The Shanghai Corporate Pavilion design for World Expo in Shanghai 2010

Yung Ho CHANG

Journal Article

Towards a respondent-preferred ki-anonymity model

Kok-Seng WONG,Myung Ho KIM

Journal Article

Analyzing the distinguishing factors that affect childhood obesity in South Korea

So Jung Yang, Hun-Sung Kim, Kun-Ho Yoon

Journal Article

Simultaneous removal of total oxidizable carbon, phosphate and various metallic ions from HO solution

Journal Article

photocatalytic performance through the evolution of the properties due to the phase transition from NaBiO·2HO

Journal Article

A Review on the 3D Printing of Functional Structures for Medical Phantoms and Regenerated Tissue and Organ Applications

Kan Wang, Chia-Che Ho, Chuck Zhang, Ben Wang

Journal Article

Is atmospheric oxidation capacity better in indicating tropospheric O formation?

Journal Article

Prediction of selected biodiesel fuel properties using artificial neural network

Solomon O. GIWA,Sunday O. ADEKOMAYA,Kayode O. ADAMA,Moruf O. MUKAILA

Journal Article

Availability of wind energy resource potential for power generation at Jos, Nigeria

O. O. Ajayi, R. O. Fagbenle, J. Katende, J. O. Okeniyi

Journal Article

Selective oxidation of o -nitrotoluene to o -nitrobenzaldehyde with metalloporphyrins as biomimetic catalysts

Xinling WANG, Yuanbin SHE,

Journal Article

Capsule endoscopy—A mechatronics perspective

Lin LIN, Mahdi RASOULI, Andy Prima KENCANA, Su Lim TAN, Kai Juan WONG, Khek Yu HO, Soo Jay PHEE

Journal Article

Rh2O3/hexagonal CePO4 nanocatalysts for N2O decomposition

Huan Liu, Zhen Ma

Journal Article