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  • 1
    Online Resource
    Online Resource
    Vertical variation of source-apportioned PM2.5 and selected volatile organic compounds near an elevated expressway in an urban area
    Springer Science and Business Media LLC ; 2024
    In:  Environmental Science and Pollution Research Vol. 31, No. 13 ( 2024-02-20), p. 20477-20487
    Details
    In: Environmental Science and Pollution Research, Springer Science and Business Media LLC, Vol. 31, No. 13 ( 2024-02-20), p. 20477-20487
    Type of Medium: Online Resource
    ISSN: 1614-7499
    URL: Article
    DOI: 10.1007/s11356-024-32480-1
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2024
    detail.hit.zdb_id: 2014192-0
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  • 2
    Online Resource
    Online Resource
    Oxidative DNA damage estimated by urinary 8-hydroxy-2′-deoxyguanosine and arsenic in glass production workers
    SAGE Publications ; 2012
    In:  Toxicology and Industrial Health Vol. 28, No. 6 ( 2012-07), p. 513-521
    Details
    In: Toxicology and Industrial Health, SAGE Publications, Vol. 28, No. 6 ( 2012-07), p. 513-521
    Abstract: A total of 130 male glass workers, including 33 administrative workers, 18 batch house workers, 42 craftsmen, and 37 melting process workers, were recruited to investigate the potential DNA damage resulting from toxic element exposure. The occupational exposure to trace elements, including arsenic (As), cadmium (Cd), manganese (Mn), nickel (Ni), lead (Pb), and selenium (Se), was estimated by their urinary levels as internal doses. In addition, all participants filled a self-filled questionnaire indicating their individual information. The average levels of urinary As, Cd, Mn, Ni, Pb, Se, and 8-hydroxy-2′-deoxyguanosine (8-OHdG) were 282.3 ± 464.6, 3.07 ± 5.39, 3.81 ± 11.43, 81.48 ± 138.9, 18.23 ± 49.61, 165.2 ± 224.9, and 17.21 ± 26.34 μg/g creatinine, respectively. The urinary levels of 8-OHdG and toxic elements were strongly associated with the work nature of the worker, with an exception of Mn and Pb. In contrast, the levels of toxic element were not influenced by age, smoking behavior, and alcohol consumption. The urinary 8-OHdG was found significantly higher in higher internal exposure groups of As, Cd, Ni, and Se. However, the stepwise multiple regression models showed that urinary 8-OHdG was only associated with urinary As and heat stress but inversely with age.
    Type of Medium: Online Resource
    ISSN: 0748-2337 , 1477-0393
    URL: Article
    DOI: 10.1177/0748233711416945
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2012
    detail.hit.zdb_id: 2010891-6
    SSG: 12
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  • 3
    Online Resource
    Online Resource
    The total body burden of chromium associated with skin disease and smoking among cement workers
    Elsevier BV ; 2008
    In:  Science of The Total Environment Vol. 391, No. 1 ( 2008-2), p. 76-81
    Details
    In: Science of The Total Environment, Elsevier BV, Vol. 391, No. 1 ( 2008-2), p. 76-81
    Type of Medium: Online Resource
    ISSN: 0048-9697
    URL: Article
    DOI: 10.1016/j.scitotenv.2007.11.011
    RVK:
    AR 10100
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2008
    detail.hit.zdb_id: 1498726-0
    detail.hit.zdb_id: 121506-1
    SSG: 12
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  • 4
    Online Resource
    Online Resource
    Comparison between Thermal Desorption Tubes and Stainless Steel Canisters Used for Measuring Volatile Organic Compounds in Petrochemical Factories
    Oxford University Press (OUP) ; 2016
    In:  Annals of Occupational Hygiene Vol. 60, No. 3 ( 2016-04), p. 348-360
    Details
    In: Annals of Occupational Hygiene, Oxford University Press (OUP), Vol. 60, No. 3 ( 2016-04), p. 348-360
    Type of Medium: Online Resource
    ISSN: 0003-4878 , 1475-3162
    URL: Article
    DOI: 10.1093/annhyg/mev078
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2016
    detail.hit.zdb_id: 2003484-2
    detail.hit.zdb_id: 2885099-3
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  • 5
    Online Resource
    Online Resource
    Visible Light Active Phosphorus-Doped TiO 2 Nanoparticles: An EPR Evidence for the Enhanced Charge Separation
    American Chemical Society (ACS) ; 2012
    In:  The Journal of Physical Chemistry C Vol. 116, No. 30 ( 2012-08-02), p. 16191-16197
    Details
    In: The Journal of Physical Chemistry C, American Chemical Society (ACS), Vol. 116, No. 30 ( 2012-08-02), p. 16191-16197
    Type of Medium: Online Resource
    ISSN: 1932-7447 , 1932-7455
    URL: Article
    DOI: 10.1021/jp212346f
    RVK:
    VA 5430.C
    Language: English
    Publisher: American Chemical Society (ACS)
    Publication Date: 2012
    detail.hit.zdb_id: 2256522-X
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  • 6
    Online Resource
    Online Resource
    A Simple Pressurized SOFC Test Rig for Measurements of Cell Performance, Impedance, and Various Overvoltages
    The Electrochemical Society ; 2015
    In:  ECS Transactions Vol. 68, No. 1 ( 2015-06-02), p. 2179-2188
    Details
    In: ECS Transactions, The Electrochemical Society, Vol. 68, No. 1 ( 2015-06-02), p. 2179-2188
    Abstract: This paper reports a newly designed high-pressure full button cell test platform for measurements of various effects on pressurized solid oxide fuel cells (PSOFC). The testing platform has several parts, from inside out including a specially thread-designed housing carrier for the full button cell, a serpentine heating pipe system for uniform heating of the supplied fuel and air gases, a temperature-controlled furnace, and a large high-pressure vessel together with measuring devices and their associates. Hence, current-voltage curves and AC impedance spectra of any full/half button cells can be conveniently measured. In this study, we present power-generating characteristics and electrochemical impedance spectra (EIS) data of an anode-supported full button cell over a range of pressure ( p = 1~5 atm) at a temperature T = 800 o C. Results show that power densities increase with increasing p at any given current densities. These results are explained by the corresponding EIS data. In addition to the aforesaid power-generating characteristics and EIS results, this study also presents analyses of activation and concentration overvoltages using the Butler-Volmer equation and the related concentration overvoltage equation based on a 1D diffusion model. These overvoltage results will be compared with previous numerical and experimental data to enhance our understanding of the effect of pressurization on the polarization mechanisms in SOFCs.
    Type of Medium: Online Resource
    ISSN: 1938-5862 , 1938-6737
    URL: Article
    DOI: 10.1149/06801.2179ecst
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2015
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  • 7
    Online Resource
    Online Resource
    Risks of musculoskeletal disorders among betel quid preparers in Taiwan
    Wiley ; 2014
    In:  American Journal of Industrial Medicine Vol. 57, No. 4 ( 2014-04), p. 476-485
    Details
    In: American Journal of Industrial Medicine, Wiley, Vol. 57, No. 4 ( 2014-04), p. 476-485
    Abstract: Betel quid chewing is common in Taiwan. The work of betel quid preparers is characterized by long hours of static work, awkward working posture and highly repetitive hand/wrist motion. However, the musculoskeletal health of betel quid preparers receives very little attention. Methods The Chinese version of the Standardized Nordic Musculoskeletal Questionnaire (NMQ) was administered, and electrogoniometers and electromyography were used in this cross‐sectional study to characterize the hand/wrist motion of the subjects. Physical examinations on the thumbs and wrists of the subjects were conducted by means of Phalen's test and Finkelstein's test, respectively. Results Among the 225 participants, more than 95% attributed their musculoskeletal complaints to their work, and shoulder, neck, hand/wrist, and lower back discomfort were most frequently reported. More than 70% of the preparers did not seek medical treatment for their musculoskeletal problems. Based on the physical examination, 24% of the participants had suspected symptom of either carpal tunnel syndrome (CTS) or DeQuervain's tenosynovitis. The instrumental measurements indicated that betel quid preparation is characterized by extreme angle ranges and moderate repetition of wrist motion as well as low forceful exertion. Conclusions This study concludes that betel quid preparers are a high risk group of developing musculoskeletal disorders (MSDs). Future studies by electrogoniometers and detailed physical examination on betel quid preparers are needed to determine the predisposing factors for CTS. Some intervention measures to prevent MSDs and to lessen psychological stress for this group of workers are strongly suggested. Am. J. Ind. Med. 57:476–485, 2014. © 2014 Wiley Periodicals, Inc.
    Type of Medium: Online Resource
    ISSN: 0271-3586 , 1097-0274
    URL: Issue
    URL: Article
    DOI: 10.1002/ajim.v57.4
    DOI: 10.1002/ajim.22300
    Language: English
    Publisher: Wiley
    Publication Date: 2014
    detail.hit.zdb_id: 1491156-5
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  • 8
    Online Resource
    Online Resource
    Polarized Thermoreflectance and Reflectance Study of ReS 2 and ReS 2 :Au Single Crystals
    IOP Publishing ; 2011
    In:  Japanese Journal of Applied Physics Vol. 50, No. 4S ( 2011-04-01), p. 04DH17-
    Details
    In: Japanese Journal of Applied Physics, IOP Publishing, Vol. 50, No. 4S ( 2011-04-01), p. 04DH17-
    Type of Medium: Online Resource
    ISSN: 0021-4922 , 1347-4065
    URL: Article
    DOI: 10.7567/JJAP.50.04DH17
    RVK:
    UA 4210.1
    RVK:
    UA 4210.2
    RVK:
    UA 4210
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2011
    detail.hit.zdb_id: 218223-3
    detail.hit.zdb_id: 797294-5
    detail.hit.zdb_id: 2006801-3
    detail.hit.zdb_id: 797295-7
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  • 9
    Online Resource
    Online Resource
    A Simple Pressurized SOFC Test Rig for Measurements of Cell Performance, Impedance, and Various Overvoltages
    The Electrochemical Society ; 2015
    In:  ECS Meeting Abstracts Vol. MA2015-03, No. 1 ( 2015-07-15), p. 349-349
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2015-03, No. 1 ( 2015-07-15), p. 349-349
    Abstract: Nowadays, our modern society is facing many serious environmental and energy shortage problems. Delay of action will jeopardize the ability of future generations to meet their needs. Thus, how to develop highly efficient power generation systems with very low emissions is an urgent need for our modern society. Probably, a pressurized solid oxide fuel cells (PSOFC) integrating with a gas turbine (GT) or micro gas turbine (MGT), the hybrid PSOFC-GT or -MGT power system, which has the highest efficiency up to 70%, is the best candidate. The development of such hybrid power system helps to the consolidation of the fuel cell industry, the expansion of the gas turbine industry, and the improvement of the environment. As such, the hybrid PSOFC-MGT power system has become an emerging topic in the 21 th century with wide interest, as evidenced by a large volume of literature and several demonstration projects. For examples, Siemens demonstrated a 220 kW PSOFC-MGT hybrid system in 2002, the Korea Institute of Energy Research displayed a 30 kW (5 kW PSOFC integrated with 25 kW MGT) hybrid system in 2006, and Mitsubishi Heavy Industries run a 200 kW hybrid PSOFC-MGT combined-cycle power plant in 2011. Indeed, considerable progresses have been made over the past two decades in optimization of geometry and development of new materials and in understanding of mass and heat transports together with electrochemical reactions in porous microstructures. However, there are still technical challenges remaining to be solved step by step with limited but controllable parameters before a stable operation among different components of the hybrid PSOFC-MGT system can be assured and the status of the development can be then elevated from a module level. One of the challenges is the detail electrochemical impedance spectra (EIS) of PSOFC, which is still rare in literatures. This motivates us to design a simple efficient high-pressure full/half button cell testing platform for measurements of the effect of pressurization and increasing temperature on EIS and various overvoltages of PSOFC. The testing platform has several parts, from inside out including a specially thread-designed housing carrier for the full/half button cell, a serpentine heating pipe system for uniform heating of the supplied fuel and air gases, a temperature-controlled furnace, and a large high-pressure vessel together with measuring devices and their associates. Hence, current-voltage curves and AC impedance spectra of any full/half button cells can be measured. In this study, we present power-generating characteristics and EIS data of an anode-supported full button cell over wide ranges of pressure ( p = 1~5 atm) and temperature ( T = 700~850 o C). We apply constant gas flow rates, 200ml min -1 H 2 in anode and 200ml min -1 air in cathode, for all experimental events. Results show that, for any given values of T or p , power densities increase with increasing p or T at any fixed current densities. Such enhancement on power densities is more sensitive to the increase of T than to the increase of p . These results are explained by the corresponding EIS data. The latter shows that both high and low frequency arcs of impedance spectra decrease with increasing p , resulting in a reduction of the total polarization resistance. Specifically, the high frequency arcs decrease rather weakly with increasing p as compared to that of the low frequency arcs. Further, we found that the characteristic frequencies of high and low frequency arcs occur around 100 ~ 1000 Hz and at about 10 Hz, respectively. The former may be attributed to the cathode activation polarization and the latter may be due to the diffusion processes in the anode electrode. Hence, pressurization can simultaneously decrease the cathode activation polarization and the anodic diffusion concentration polarization. In addition to the aforesaid power-generating characteristics and EIS results, this study reports analyses of activation and concentration overvoltages using the Butler-Volmer equation and the related concentration overvoltage equation based on a 1D diffusion model. We found that both activation and concentration overvoltages decrease with increasing p . Two important parameters, the exchange current density and the anodic effective diffusion coefficient, are also calculated by applying the present measured data. Results show that pressurization enhances the exchange current density leading to an increase of the electrochemical reaction rate. Though pressurization reduces slightly the anodic effective diffusion coefficient, it can increase the molar concentration and thus the overall gas-phase diffusion rate in porous electrode. These overvoltage results will be compared with previous numerical and experimental data to enhance our understanding of the effect of pressurization on the polarization mechanisms in SOFCs. Figure 1
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2015-03/1/349
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2015
    detail.hit.zdb_id: 2438749-6
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  • 10
    Online Resource
    Online Resource
    Chromium-induced skin damage among Taiwanese cement workers
    SAGE Publications ; 2016
    In:  Toxicology and Industrial Health Vol. 32, No. 10 ( 2016-10), p. 1745-1751
    Details
    In: Toxicology and Industrial Health, SAGE Publications, Vol. 32, No. 10 ( 2016-10), p. 1745-1751
    Abstract: Little research has been done on the relationships between chromium exposure, skin barrier function, and other hygienic habits in cement workers. Our purpose was to investigate chromium-induced skin barrier disruption due to cement exposure among cement workers. One hundred and eight cement workers were recruited in this study. Urinary chromium concentration was used to characterize exposure levels. The biological exposure index was used to separate high and low chromium exposure. Transepidermal water loss (TEWL) was used to assess the skin barrier function. TEWL was significantly increased in workers with high chromium exposure levels than those with low chromium exposure levels ( p = 0.048). A positive correlation was also found between urinary chromium concentration and TEWL ( R = 0.28, p = 0.004). After adjusting for smoking status and glove use, a significant correlation between urinary chromium concentrations and TEWL remained. Moreover, workers who smoked and had a high chromium exposure had significantly increased TEWL compared to nonsmokers with low chromium exposure ( p = 0.01). Skin barrier function of cement workers may have been disrupted by chromium in cement, and smoking might significantly enhance such skin barrier perturbation with chromium exposure. Decreased chromium skin exposure and smoking cessation should be encouraged at work.
    Type of Medium: Online Resource
    ISSN: 0748-2337 , 1477-0393
    URL: Article
    DOI: 10.1177/0748233715584699
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2010891-6
    SSG: 12
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