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Coupling of zero valent iron and biobarriers for remediation of trichloroethylene in groundwater

Journal of Environmental Sciences 2011年第4期23卷 560-567页

作者： Mullika Teerakun Alissara Reungsang Chien-Jung lin chih-Hsiang Liao Department of Biotechnology Khon Kaen University Khon Kaen 000 Thailand. National Center of Excellence for Environmental and Hazardous Waste Management (EHWM) Bangkok 10330 Thailand Research Center for Environmental and Hazardous Substance Management Khon Kaen University A. Muang Khon Kaen 40002 Thailand Department of Environmental Engineering and Science Chia Nan University of Pharmacy and Science Tainan 71710 Taiwan China Department of Environmental Resources Management Chia Nan University of Pharmacy and Science Tainan 71710 Taiwan China

This study attempted to construct a three series barrier system to treat high concentrations of trichloroethylene （TCE; 500 mg/L） in synthetic groundwater. The system consisted of three reactive barriers using iron fillings as an iron-based barrier in the first column, sugarcane bagasse mixed with anaerobic sludge as an anaerobic barrier in the second column, and a biofilm coated on oxygen carbon inducer releasing material as an aerobic barrier in the third column. In order to evaluate the extent of removal of TCE and its metabolites in the aquifer down gradient of the barrier system, a fourth column filled with sand was applied. Residence time of the system was investigated by a bromide tracer test. The results showed that residence time in the column system of the control set and experimental set were 23.62 and 29.99 days, respectively. The efficiency of the three series barrier system in removing TCE was approximately 84% in which the removal efficiency of TCE by the iron filling barrier, anaerobic barrier and aerobic barrier were 42%, 16% and 25%, respectively. cis-Dichloroethylene （cis-DCE）, vinyl chloride （VC）, ethylene and chloride ions were observed as metabolites following TCE degradation. The presence of chloride ions in the effluent from the column system indicated the degradation of TCE. However, cis-DCE and VC were not fully degraded by the proposed barrier system which suggested that another remediation technology after the barrier treatment such as air sparging and adsorption by activated carbon should be conducted.

关键词： iron filling biobarrier remediation permeable reactive barriers trichloroethylene

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Solar flare forecasting based on a Fusion Model

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Earth and Planetary Physics 2025年第1期9卷 171-181页

作者： YiYang Li ShiYong Huang SiBo Xu ZhiGang Yuan Kui Jiang QiYang Xiong RenTong lin School of Earth and Space Science Technology Hubei Luojia LaboratoryWuhan UniversityWuhan 430072China

Solar flare prediction is an important subject in the field of space *** learning technology has greatly promoted the development of this *** this study,we propose a novel solar flare forecasting model integrating Deep Residual Network(ResNet)and Support Vector Machine(SVM)for both≥C-class(C,M,and X classes)and≥M-class(M and X classes)*** collected samples of magnetograms from May 1,2010 to September 13,2018 from Space-weather Helioseismic and Magnetic Imager(HMI)Active Region Patches and then used a cross-validation method to obtain seven independent data *** then utilized five metrics to evaluate our fusion model,based on intermediate-output extracted by ResNet and SVM using the Gaussian kernel *** results show that the primary metric true skill statistics(TSS)achieves a value of 0.708±0.027 for≥C-class prediction,and of 0.758±0.042 for≥M-class prediction;these values indicate that our approach performs significantly better than those of previous *** metrics of our fusion model’s performance on the seven datasets indicate that the model is quite stable and robust,suggesting that fusion models that integrate an excellent baseline network with SVM can achieve improved performance in solar flare ***,we also discuss the performance impact of architectural innovation in our fusion model.

关键词： solar flare pace weather deep learning Fusion Model

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Helicobacter pylori infection concomitant with metabolic syndrome further increase risk of colorectal adenomas

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World Journal of Gastroenterology 2010年第30期16卷 3841-3846页

作者： Ying-Lung lin Jui-Kun Chiang Shih-Min lin chih-En Tseng Department of Family Medicine Buddhist Tzu-Chi Dalin General Hospital Department of Biological Sciences University of Waikato Department of Anatomic Pathology Buddhist Dalin Tzu Chi General Hospital School of Medicine Buddhist Tzu Chi University

AIM: To investigate the association of colorectal adenomas with both Helicobacter pylori (H. pylori) infection and metabolic syndrome. METHODS: Using a cross-sectional hospital-based study, we analyzed physical examination data from 9311 healthy subjects with overnight physical examinations performed between January 2004 and December 2006. Examined data included gender, age, life style, anthropometric measurements, blood pressure, biochemical and hematological studies, H. pylori infection detected by esophagogastroduodenoscopy and biopsy urease tests, and colorectal adenomas detected with a complete total colonoscopy. RESULTS: The prevalence values for H. pylori infection, metabolic syndrome, and colorectal adenoma were39.2%, 18.7%, and 20.7%, respectively. Colorectal adenoma risk factors included male gender [odd ratio (OR): 2.005, 95% conf idence interval (CI): 1.740-2.310, P < 0.001], advanced age (OR: 1.046, 95% CI: 1.040-1.052, P < 0.001), smoking (OR: 1.377, 95% CI: 1.146-1.654, P = 0.001), increased body fat (OR: 1.016, 95% CI: 1.007-1.026, P = 0.001), higher white blood cell count (OR: 1.038, 95% CI: 1.005-1.073, P = 0.025), H. pylori infection (OR: 1.366, 95% CI: 1.230-1.517, P < 0.001), and metabolic syndrome (OR: 1.408, 95% CI: 1.231-1.610, P < 0.001). In addition, concomitant H. pylori infection with metabolic syndrome further increased the probability of colorectal adenomas. CONCLUSION: Our study revealed H. pylori infection with concomitant metabolic syndrome might further increase the risk of colorectal adenomas.

关键词： Biopsy urease test Colorectal adenoma Colorectal cancer Helicobacter pylori Metabolic syndrome

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Series Solution for Localization and Entanglement of an Exciton in a Quantum Dot Molecule by an ac Electric Field

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Communications in Theoretical Physics 2006年第2期45卷 357-362页

作者： lin chang ZHANG Xiu-Lian College of Physics and Electronic Engineering Northwest Normal University Lanzhou 730070 China

The Schroedinger equation involving the phenomenon of the localization and entanglement for an exciton in a quantum dot molecule by an ac electric field is analytically investigated. New exact series solutions for the Schroedinger equation have been obtained for the first time. The analytical expressions can further describe the dynamical behaviors of an interacting electron-hole pair in a double coupled quantum dot molecule under an ac electric field accurately.

关键词： Schrodinger equation quantum dot molecule localization entanglement exact series solution

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Testing heteroscedasticity in nonparametric regression models based on residual analysis

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Applied Mathematics(A Journal of Chinese Universities) 2008年第3期23卷 265-272页

作者： ZHANG Lei MEI chang-lin School of Science Xi＇an Jiaotong University Xi＇an 710049 China Xinhua News Agency Beijing100803 China School of Science Xi＇an Jiaotong University Xi＇an 710049 China

The importance of detecting heteroscedasticity in regression analysis is widely recognized because efficient inference for the regression function requires that heteroscedasticity should be taken into account. In this paper, a simple test for heteroscedasticity is proposed in nonparametric regression based on residual analysis. Furthermore, some simulations with a comparison with Dette and Munk＇s method are conducted to evaluate the performance of the proposed test. The results demonstrate that the method in this paper performs quite satisfactorily and is much more powerful than Dette and Munk＇s method in some cases.

关键词： heteroscedasticity nonparametric regression residual analysis

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SYNTHESIS AND PROPERTIES OF NOVEL POLY(IMINO KETONE)S AS HIGH-PERFORMANCE POLYMERS

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Chinese Journal of Polymer Science 2008年第1期26卷 55-61页

作者： chang, Guan-jun Luo, Xuan Zhang, lin lin, Run-xiong Qingdao Univ Sci & Technol Minist Educ Key Lab Rubber Plast Qingdao 266042 Peoples R China China Acad Engn Phys Mianyang 621900 Peoples R China

Di(4-bromophenyl)ketone and various aromatic diamines as the monomers,a series of novel poly(imino ketone)s (PIKs)have been synthesized via palladium-catalyzed aryl amination,which is Hartwig-Buchwald polycondensation *** structures of PIKs are characterized by means of elemental analysis,FT-IR,~1H-NMR and UV-Vis spectroscopy. The results show a good agreement with the proposed *** general properties of PIKs are studied by DSC,TG and wide-angle X-ray diffraction,the solubility behavior is...

关键词： Di(4-bromophenyl)ketone Aromatic diamines Palladium-catalyzed aryl amination High-performance Poly(imino ketone)

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Gender Classification Based on Multi-Scale and Run-Length Features

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Journal of Electronic Science and Technology 2017年第3期15卷 251-257页

作者： Sheng-Hung Wang chih-Yang lin Jing-Tong Fu Department of Computer Science and Information Engineering Asia University Taichung 41354 Department of Bioinformatics and Medical Engineering Asia University Taichung 41354

Human faces can convey substantial information about a person,such as his or her age,race,identity,gender,and *** facial information can be obtained through techniques like human facial tracking and detection,facial recognition,gender classification,emotion recognition,as well as age *** these,gender classification is particularly important due to its diverse applications in the fields such as video surveillance and commercial *** this thesis,we propose a method of gender classification based on run-length *** proposed method uses a run-length histogram to record the position information of pixels,thereby efficiently improves the recognition rate and makes the technique suitable for a big-data multimedia *** experimental results show that the proposed method can achieve better accuracy than a multi-scale based method can.

关键词： Index Terms--Gender classification run-length,texture feature.

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Neuroprotective effects of statins against amyloid β-induced neurotoxicity

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Neural Regeneration Research 2018年第2期13卷 198-206页

作者： Hsin-Hua Li chih-Li lin Chien-Ning Huang Institute of Medicine Chung Shan Medical University Department of Medical Research Chung Shan Medical University Hospital Department of Internal Medicine Chung Shan Medical University Hospital

A growing body of evidence suggests that disruption of the homeostasis of lipid metabolism affects the pathogenesis of Alzheimer＇s disease （AD）. In particular, dysregulation of cholesterol homeostasis in the brain has been reported to considerably increase the risk of developing AD. Thus, dysregulation of lipid homeostasis may increase the amyloid β （Aβ） levels by affecting amyloid precursor protein （APP） cleavage, which is the most important risk factor involved in the pathogenesis of AD. Previous research demonstrated that Aβ can trigger neuronal insulin resistance, which plays an important role in response to Aβ-induced neurotoxicity in AD. Epidemiological studies also suggested that statin use is associated with a decreased incidence of AD. Therefore, statins are believed to be a good candidate for conferring neuropro- tective effects against AD. Statins may play a beneficial role in reducing A^-induced neurotoxicity. Their effect involves a putative mechanism beyond its cholesterol-lowering effects in preventing A[3-induced neurotoxicity. However, the underlying molecular mechanisms of the protective effect of statins have not been clearly determined in Aβ-induced neurotoxicity. Given that statins may provide benefits beyond the inhibition of 3-hydroxy-3-methylglutaryl coenzyme A （HMG-CoA） reductase, these drugs may also improve the brain. Thus, statins may have beneficial effects on impaired insulin signaling by activating AMP-activated protein kinase （AMPK） in neuronal cells. They play a potential therapeutic role in targeting Aβ-mediated neurotoxicity.

关键词： statins neuroprotective effects amyloid E-induced neurotoxicity insulin signaling AMP-activated protein kinase

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High risk for obstructive sleep apnea and risk of hypertension in military personnel: The CHIEF sleep study

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World Journal of Clinical Cases 2023年第30期11卷 7309-7317页

作者： Wei-Nung Liu Ko-Huan lin Kun-Zhe Tsai Chen-chih Chu Yun-Chen chang Younghoon Kwon Gen-Min lin Department of Medicine Tri-Service General HospitalNational Defense Medical CenterTaipei 114TaiwanChina Department of Psychiatry Hualien Tzu Chi HospitalHualien City 970TaiwanChina Department of Stomatology of Periodontology Mackay Memorial HospitalTaipei 104TaiwanChina School of Nursing and Graduate Institute of Nursing China Medical UniversityTaichung 406TaiwanChina Department of Medicine University of WashingtonSeattle98104-2499United States Department of Medicine Hualien Armed Forces General HospitalHualien City 970TaiwanChina

BACKGROUND Epidemiological studies have revealed an association between obstructive sleep apnea(OSA)and hypertension in the general population,while the association in military personnel was rarely *** To examine the association between high risk for OSA and hypertension by phenotypes in military young *** A total of 746 military personnel,aged 27.9 years,were included in the cardiorespiratory fitness and health in armed forces(CHIEF)-sleep study in Taiwan in *** medications were not used by the *** risk for OSA was assessed using the Berlin *** was defined using the 7th Report of the Joint National Committee on Prevention,Detection,Evaluation,and Treatment of High Blood Pressure(JNC 7)and the 2017 American College of Cardiology(ACC)/American Heart Association(AHA)*** cutoff levels of systolic and diastolic blood pressure(SBP and DBP)for the 2017 ACC/AHA-and JNC 7-based guidelines were 130/140 mmHg and 80/90 mmHg,*** phenotypes included isolated systolic and diastolic hypertension(ISH,high SBP only and IDH,high DBP only)and combined hypertension(both high SBP and DBP).Multivariable logistic regression analysis with adjustment for demographics,lifestyle and metabolic *** The prevalence of high risk for OSA,JNC 7-based hypertension and 2017 ACC/AHA-based hypertension were 8.0%,5.2%and 22.0%,*** with a high risk for OSA had a higher probability of JNC 7-based overall and combined hypertension(odds ratios(ORs))and 95%confidence intervals:2.82(1.07-7.42)and 7.54(1.10-51.54),although the probabilities of ISH and IDH were unaffected by a high risk for OSA(ORs:1.96 and 2.35,respectively,both P>0.05).In contrast,no associations for any hypertension phenotypes were found according to the 2017 ACC/AHA *** A high risk for OSA was associated with severe hypertension and combined hypertension among Asian military young adults.

关键词： Asian young adults Berlin questionnaire Hypertension phenotypes Military Sleep apnea

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Mechanical properties and microstructure of multilayer graphene oxide cement mortar

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Frontiers of Structural and Civil Engineering 2021年第4期15卷 1058-1070页

作者： Jun LIU Luxi ZHAO Fei chang lin CHI School of Environment and Architecture University of Shanghai for Science and TechnologyShanghai200093China

This study reports on the effects of multilayer graphene oxide(MGO)on compressive strength,flexural strength,and microstructure of cement *** cement mortar was prepared with type ***.52.5 Portland cement,standard sand,and *** mixes were prepared with inclusion of MGO(0%,0.02%,0.04%,and 0.06%by weight of cement).The testing result shows that the compressive of GO-cement mortar increased by 4.84%–13.42%,and the flexural strength increased by 4.37%–8.28%at 3 ***-cement mortar’s compressive strength and flexural strength at 7 d increased by 3.84%–12.08%and 2.54%–13.43%,*** made little contribution to the increases of compressive strength and flexural strength of cement mortar at 28 *** results of X-ray diffraction(XRD),scanning electron microscope(SEM),and nitrogen(N2)adsorption/desorption tests show that the types of hydration products and crystal grain size did not change after adding ***,it can help to improve the microstructure of the cement mortar via regulating hydration products and can provide more condensed cores to accelerate ***,the regulating action of MGO for the microstructure of cement mortar at an early age was better than that at 28 d.

关键词： graphene oxide cement mortar mechanical properties microstructure

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