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Concentrations and classification of HCHs and DDTs in soil from the lower reaches of the Jiulong River, China

Jiaquan ZHANG, Shihua QI, Xinli XING, Lingzhi TAN, Wei CHEN, Ying HU, Dan YANG, Chenxi WU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 177-183 doi: 10.1007/s11783-011-0354-y

Abstract: Hierarchical Cluster Analysis (HCA) and Pearson’s bivariate Correlations Analysis (PCA) were used toThe results showed that DDTs were the major contaminants and there were no significant correlations between

Keywords： hexachlorocyclohexane (HCH) and dichlorodiphenyltrichloroethan (DDT)     classification     Hierarchical Cluster Analysis(HCA)     Pearson’s bivariate Correlations Analysis (PCA)    

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Accounting for the uncertainties in the estimation of average shear wave velocity using – correlations

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1199-1208 doi: 10.1007/s11709-021-0749-1

Abstract: Site-specific seismic hazard analysis is crucial for designing earthquake resistance structures, particularlyShear wave velocity ( V S) is a key parameter in such analysis, although the economyVarious V S–SPT– N correlations are routinely incorporated in seismic hazardanalysis to estimate the value of V S. using general and soil-specific correlations.

Keywords： uncertainties     V S– N correlations     V S30     SPT data     statistical    

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Enhancing power generation of piezoelectric bimorph device through geometrical optimization

Action NECHIBVUTE,Albert CHAWANDA,Pearson LUHANGA

Frontiers in Energy 2015, Volume 9, Issue 2,   Pages 246-246 doi: 10.1007/s11708-015-0360-z

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Correlations for estimating solar radiation using sunshine hours and temperature measurement in Osogbo

S. OHUNAKIN, M. S. ADARAMOLA, O. M. OYEWOLA, R. O. FAGBENLE

Frontiers in Energy 2013, Volume 7, Issue 2,   Pages 214-222 doi: 10.1007/s11708-013-0241-2

Abstract: Correlations using linear and quadratic expressions were developed to relate the global solar radiationAll the developed quadratic correlations gave better correlation coefficients (0.834, 0.872 and 0.823

Keywords： global solar radiation     Hargreaves model     sunshine hour     ambient temperatures     Osogbo    

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Applicability of high dimensional model representation correlations for ignition delay times of n-heptane

Wang LIU, Jiabo ZHANG, Zhen HUANG, Dong HAN

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 367-376 doi: 10.1007/s11708-018-0584-9

Abstract: , the global correlation and the stepwise correlations, were then constructed.Besides, the ignition delay times predicted by both types of correlations were validated against thoseThe results showed that both correlations had a satisfactory prediction accuracy in general for the ignitiondelay times of the n-heptane/air mixtures and the stepwise correlations exhibited a better performanceTherefore, it is concluded that HDMR correlations are capable of predicting the ignition delay times

Keywords： ignition delay     random sampling     high dimensional model representation     n-heptane     fuel kinetics    

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Indoor carbonyl compounds in an academic building in Beijing, China: concentrations and influencing factors

Chuanjia JIANG, Pengyi ZHANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 184-194 doi: 10.1007/s11783-011-0309-3

Abstract: Principal component analysis identified a combined effect of common indoor carbonyl sources and ventilation

Keywords： carbonyl compounds     indoor air     ventilation     human occupancy     source emission rate (SER)     principal component analysis(PCA)    

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Boiling heat transfer correlations for refrigerant mixtures flowing inside micro-fin tubes

ZHANG Xiaoyan, ZHANG Xingqun, CHEN Yunguang, YUAN Xiuling

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 489-493 doi: 10.1007/s11708-008-0110-6

Abstract: internally grooved horizontal tubes with different geometrical parameters, a boiling heat transfer correlationscomparison between the calculation and the experimental results indicates that the prediction by the present correlations

Keywords： comparison     micro-fin     calculation     transfer     prediction    

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Regional wind power forecasting model with NWP grid data optimized

Zhao WANG, Weisheng WANG, Bo WANG

Frontiers in Energy 2017, Volume 11, Issue 2,   Pages 175-183 doi: 10.1007/s11708-017-0471-9

Abstract: minimal-redundancy-maximal-relevance (mRMR), while the latter does so based on the method of principal component analysis(PCA).

Keywords： wind power forecasting     feature set     minimal-redundancy-maximal-relevance (mRMR)     principal component analysis(PCA)     locally weighted learning model    

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Predicting non-carcinogenic hazard quotients of heavy metals in pepper (

Marzieh Mokarram, Hamid Reza Pourghasemi, Huichun Zhang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1331-0

Abstract: . • PCA and random search can select the main spectra and predict THQ for each element.Based on the relevant spectral bands identified by principal component analysis (PCA) and random searchThe results of PCA and random search indicated that the spectra at the bands of b570, b650, and b760Therefore, in future studies, instead of examining the amount of heavy metals in plants by chemical analysiselectromagnetic waves in the identified bands can be readily investigated in the field based on the established correlations

Keywords： Heavy metals     Plants     Target Hazard Quotient (THQ)     Principal Component Analysis (PCA)     Random search     Electromagnetic    

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Interaction and independence on methane oxidation of landfill cover soil among three impact factors: water, oxygen and ammonium

Pinjing HE, Na YANG, Wenjuan FANG, Fan Lü, Liming SHAO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 175-185 doi: 10.1007/s11783-011-0320-8

Abstract: Canonical correspondence analysis was utilized to distinguish the important impact factors.

Keywords： polymerase chain reaction (PCR)     denaturing gradient gel electrophoresis (DGGE)     principal component analysis(PCA)     canonical correspondence analysis (CCA)    

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Acute toxicity assessment of drinking water source with luminescent bacteria: Impact of environmental conditions and a case study in Luoma Lake, East China

Xuewen Yi, Zhanqi Gao, Lanhua Liu, Qian Zhu, Guanjiu Hu, Xiaohong Zhou

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1288-z

Abstract: Pearson’s correlation analysis in the experiment revealed that temperature, pH value, hardness, and turbidityluminescence inhibition rate, whereas dissolved oxygen showed a weak statistically positive correlation with a Pearson

Keywords： Bioluminescent bacteria     Acute toxicity     Pearson correlation analysis     Drinking water source     Vibrio fischeri    

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Non-negativematrix factorization based unmixing for principal component transformed hyperspectral data

Xiu-rui GENG,Lu-yan JI,Kang SUN

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 5,   Pages 403-412 doi: 10.1631/FITEE.1600028

Abstract: Non-negative matrix factorization (NMF) has been widely used in mixture analysis for hyperspectral remoteWhen used for spectral unmixing analysis, however, it has two main shortcomings: (1) since the dimensionalityAlthough principal component analysis (PCA) can be used to mitigate these two problems, the transformedIn this paper, we analyze the impact of PCA on NMF, and find that multiplicative NMF can also be applicable

Keywords： Non-negative matrix factorization (NMF)     Principal component analysis (PCA)     Endmember     Hyperspectral    

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Exergy analysis and simulation of a 30MW cogeneration cycle

Nikhil Dev, Samsher, S. S. Kachhwaha, Rajesh Attri

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2,   Pages 169-180 doi: 10.1007/s11465-013-0263-9

Abstract:

Cogeneration cycle is an efficient mean to recover the waste heat from the flue gases coming out of gas turbine. With the help of computer simulation, design parameters may be selected for the best performance of cogeneration cycle. In the present work a program is executed in software EES on the basis of mathematical modelling described in paper to study cogeneration cycle performance for different parameters. Results obtained are compared with the results available in literature and are found in good agreement with them. Real gas and water properties are inbuilt in the software. Results show that enthalpy of air entering the combustion chamber is higher than that of the flue gases at combustion chamber outlet. For different operative conditions, energy and exergy efficiencies follow similar trends; although, exergy efficiency values are always lower than the corresponding energy efficiency ones. From the results it is found that turbine outlet temperature (TIT) of 524°C is uniquely suited to efficient cogeneration cycle because it enables the transfer of heat from exhaust gas to the steam cycle to take place over a minimal temperature difference. This temperature range results in the maximum thermodynamic availability while operating with highest temperature and highest efficiency cogeneration cycle. Effect of cycle pressure ratio (CR), inlet air temperature (IAT) and water pressure at heat recovery steam generator (HRSG) inlet on the 30 MW cogeneration cycle is also studied.

Keywords： Cogeneration cycle     air compressor     HRSG     gas turbine     regenerator     CR     IAT    

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Improved R /S Method and Analysis and Forecast to China Fire Data

Fu Yuhua,Fu Anjie

Strategic Study of CAE 2004, Volume 6, Issue 5,   Pages 39-44

Abstract:

This paper discusses some improvements for the R/S analysis method (rescaled range analysis) in engineeringFor the analysis of total fire number in China, two new data grouping methods for calculating the Hurstdifference of Hurst exponent AH is introduced to judge the possibility whether or not the next year'sFor the R/S analysis of the calculated Hurst exponents, a new group of Hurst exponent H1,iAccording to the fire numbers from 1950〜1999, the fire number of year 2000 is forecasted with R/S method

Keywords： R/S analysis     rescaled range analysis     high order Hurst exponent     total fire number of whole country     forecast    

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China’s policy framework for carbon capture, utilization and storage: Review, analysis, and outlook

Frontiers in Energy 2023, Volume 17, Issue 3,   Pages 400-411 doi: 10.1007/s11708-023-0862-z

Abstract: Specific policy terms are further analyzed following the method of content analysis and categorized intoTo meet the reduction demand of China’s carbon neutral goal, policies need to be tailored according to

Keywords： carbon capture     utilization     and storage (CCUS)     policy     content analysis     China    

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Title Author Date Type Operation

Concentrations and classification of HCHs and DDTs in soil from the lower reaches of the Jiulong River, China

Jiaquan ZHANG, Shihua QI, Xinli XING, Lingzhi TAN, Wei CHEN, Ying HU, Dan YANG, Chenxi WU

Journal Article

Accounting for the uncertainties in the estimation of average shear wave velocity using – correlations

Journal Article

Enhancing power generation of piezoelectric bimorph device through geometrical optimization

Action NECHIBVUTE,Albert CHAWANDA,Pearson LUHANGA

Journal Article

Correlations for estimating solar radiation using sunshine hours and temperature measurement in Osogbo

S. OHUNAKIN, M. S. ADARAMOLA, O. M. OYEWOLA, R. O. FAGBENLE

Journal Article

Applicability of high dimensional model representation correlations for ignition delay times of n-heptane

Wang LIU, Jiabo ZHANG, Zhen HUANG, Dong HAN

Journal Article

Indoor carbonyl compounds in an academic building in Beijing, China: concentrations and influencing factors

Chuanjia JIANG, Pengyi ZHANG

Journal Article

Boiling heat transfer correlations for refrigerant mixtures flowing inside micro-fin tubes

ZHANG Xiaoyan, ZHANG Xingqun, CHEN Yunguang, YUAN Xiuling

Journal Article

Regional wind power forecasting model with NWP grid data optimized

Zhao WANG, Weisheng WANG, Bo WANG

Journal Article

Predicting non-carcinogenic hazard quotients of heavy metals in pepper (

Marzieh Mokarram, Hamid Reza Pourghasemi, Huichun Zhang

Journal Article

Interaction and independence on methane oxidation of landfill cover soil among three impact factors: water, oxygen and ammonium

Pinjing HE, Na YANG, Wenjuan FANG, Fan Lü, Liming SHAO

Journal Article

Acute toxicity assessment of drinking water source with luminescent bacteria: Impact of environmental conditions and a case study in Luoma Lake, East China

Xuewen Yi, Zhanqi Gao, Lanhua Liu, Qian Zhu, Guanjiu Hu, Xiaohong Zhou

Journal Article

Non-negativematrix factorization based unmixing for principal component transformed hyperspectral data

Xiu-rui GENG,Lu-yan JI,Kang SUN

Journal Article

Exergy analysis and simulation of a 30MW cogeneration cycle

Nikhil Dev, Samsher, S. S. Kachhwaha, Rajesh Attri

Journal Article

Improved R /S Method and Analysis and Forecast to China Fire Data

Fu Yuhua,Fu Anjie

Journal Article

China’s policy framework for carbon capture, utilization and storage: Review, analysis, and outlook

Journal Article