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Screening of indicator pharmaceuticals and personal care products in landfill leachates: a case study

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1716-y

Abstract:

● A systematic framework was developed to identify i-PPCPs for landfill leachate.

Keywords： Landfill leachates     PPCPs     Indicator     Screening criteria     Source-specificity    

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Finite element analysis of stress concentrations and failure criteria in composite plates with circular

Abdelhak KHECHAI,Abdelouahab TATI,Abdelhamid GUETTALA

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3,   Pages 281-294 doi: 10.1007/s11465-014-0307-9

Abstract:

In this study, the stress concentration factors (SCF) in cross-and-angle-ply laminated composite plates as well as in isotropic plates with single circular holes subjected to uniaxial loading is studied. A quadrilateral finite element of four-node with 32 degrees of freedom at each node, previously developed for the bending and mechanical buckling of laminated composite plates, is used to evaluate the stress distribution in laminated composite plates with central circular holes. Based up on the classical plate theory, the present finite element is a combination of a linear isoparametric membrane element and a high precision rectangular Hermitian element. The numerical results obtained by the present element compare favorably with those obtained by the analytic approaches published in literature. It is observed that the obtained results are very close to the reference results, which demonstrates the accuracy of the present element. Additionally, to determine the first ply failure (FPF) of laminated plate, several failure criterions are employed. Finally, to show the effect of ratio on the failure of plates, a number of figures are given for different fiber orientation angles.

Keywords： laminated composite plates     stress concentration     geometric singularity     anisotropic effect    

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Trapezoidal Intuitionistic Fuzzy Aggregation Operator Based on Choquet Integral and Its Application to Multi-Criteria

Xi-hua Li,Xiao-hong Chen

Frontiers of Engineering Management 2015, Volume 2, Issue 3,   Pages 266-276 doi: 10.15302/J-FEM-2015048

Abstract: The Choquet integral can serve as a useful tool to aggregate interacting criteria in an uncertain environmenttrapezoidal intuitionistic fuzzy aggregation operator based on the Choquet integral is proposed for multi-criteriaintuitionistic fuzzy numbers and both the importance and the interaction information among decision-making criteriaA new multi-criteria decision-making method based on a trapezoidal intuitionistic fuzzy Choquet integral

Keywords： multi-criteria decision making     trapezoidal intuitionistic fuzzy numbers     Choquet integral     fuzzy measure    

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Low-dose CT for lung cancer screening: opportunities and challenges

Hongbing Shen

Frontiers of Medicine 2018, Volume 12, Issue 1,   Pages 116-121 doi: 10.1007/s11684-017-0600-1

Abstract: Screening for lung cancer coupled with earlier intervention has long been studied as an approach to mortalityOn the basis of this finding, LDCT has been recommended for lung cancer screening in high-risk populationsIn addition, intractable problems gradually emerged with the progress of LDCT screening.This paper summarizes and discusses the main observations and challenges of LDCT screening for lung cancerComplementary biomarkers and technical improvement are expected in the field of lung cancer screening

Keywords： lung cancer     low-dose computerized tomography     early detection     opportunities     challenges    

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Concepts and implementation of strain-based criteria in design codes for steel structures

Reidar BJORHOVDE

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 210-216 doi: 10.1007/s11709-012-0165-7

Abstract: A uniaxial tension test is commonly used to determine the mechanical properties of steel, but it has no meaning for the response of the material in a structure. The test was developed as a consensus solution by producers, fabricators, designers and code writers, to have a standard by which similar materials could be compared to a common base. It does not represent the actual behavior of the steel in a structure, and was never intended to do so. To study the true behavior of the structure and how the material responds it would be better to determine the strains and deformations that will take place during actual service condition. Such characteristics reflect the real behavior, whether in the elastic or inelastic range. If stresses or forces are needed, these are easily determined by the value of the strain and the relevant material modulus, along with the type of cross section, whether elastic or inelastic. The paper addresses the properties of a range of structural steels, how these are incorporated into design standards and how the standards define deformation characteristics and demands for bolted and welded connections.

Keywords： steel     stress-strain characteristics     tension test     strain design     actual behavior     improved design codes    

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LSSVM-based approach for refining soil failure criteria and calculating safety factor of slopes

Shiguo XIAO; Shaohong LI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 7,   Pages 871-881 doi: 10.1007/s11709-022-0863-8

Abstract: The failure criteria of practical soil mass are very complex, and have significant influence on the safety

Keywords： slope stability     safety factor     failure criterion     least square support vector machine    

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Research on Seawall Flood Defense Criteria

Lu Yongjin, ,He Yousheng,Liu Hua

Strategic Study of CAE 2005, Volume 7, Issue 12,   Pages 17-23

Abstract:

The seawall flood defense criteria both at home and abroad have been investigated and discussed.A three level criteria for seawall design is proposed, which comprehensively integrates the encounterBased on the above-mentioned criteria an optimization design scheme of risk principle for seawall is

Keywords： seawall     design criteria     wind wave     high tide     encounter probability     failure mode     risk     optimization design    

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Systematic screening procedure and innovative energy-saving design for ionic liquid-based extractive

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1,   Pages 34-45 doi: 10.1007/s11705-022-2234-3

Abstract: In this study, a systematic screening strategy and innovative energy-saving design for ionic liquid-based

Keywords： ionic liquid     entrainer screening     feasibility analysis     extractive distillation    

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Combination of ARTP mutagenesis and color-mediated high-throughput screening to enhance 1-naphthol yield

Chenggang Qiu, Alei Zhang, Sha Tao, Kang Li, Kequan Chen, Pingkai Ouyang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 5,   Pages 793-801 doi: 10.1007/s11705-019-1876-2

Abstract: Then, a microbial clone screening system was used to accelerate the operation.Meanwhile, a novel color-mediated high-throughput screening using 4-aminoantipyrine was performed to

Keywords： Bacillus cereus QCG     naphthalene     1-naphthol     ARTP mutagenesis     high-throughput screening     4-aminoantipyrine    

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Obesity in China: its characteristics, diagnostic criteria, and implications

Weiping Jia

Frontiers of Medicine 2015, Volume 9, Issue 2,   Pages 129-133 doi: 10.1007/s11684-015-0387-x

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Diagnostic criteria of latent autoimmune diabetes in adults (LADA): a review and reflection

Yu Liao, Yufei Xiang, Zhiguang Zhou

Frontiers of Medicine 2012, Volume 6, Issue 3,   Pages 243-247 doi: 10.1007/s11684-012-0201-y

Abstract: Although it has been reported for about 20 years, the diagnostic criteria of this disease remain controversialmetabolic parameters, genetic factors and cell immunity may also contribute to the formulation of the criteriaHere, we aim to review and discuss the diagnostic criteria of latent autoimmune diabetes in adults.

Keywords： LADA     diagnostic criteria     autoantibodies     insulin independence     age of diagnosis    

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Status of hyperhomocysteinemia in China: results from the China Stroke High-risk Population Screening

Frontiers of Medicine 2021, Volume 15, Issue 6,   Pages 903-912 doi: 10.1007/s11684-021-0871-4

Abstract: A nationwide survey was conducted from October 2018 to September 2019 to assess the prevalence of hyperhomocysteinemia (Hhcy) and its influencing factors in China. A standardized questionnaire was used to collect information. Hhcy was defined as the level of serum homocysteine (HCY) ≥15.0 µmol/L. The H-type hypertension (HHYP) was defined as hypertension with an elevated serum HCY (≥15.0 µmol/L). Finally, 110 551 residents ≥40 years of age from 31 provinces in the mainland of China were included. Overall, the median serum HCY level was 10.9 µmol/L (interquartile range 7.9–15.1). A total of 28 633 participants (25.9%) were defined as Hhcy. The Hhcy prevalence ranged from 7.9% in Shanghai to 56.8% in Tianjin. The data showed that serum HCY levels were associated with age, male gender, cigarette smoking, hypertension, diabetes, ethnicity, endurance in exercise (inverse), and fruit and vegetable intake (inverse). In addition, 15 486 participants were defined as HHYP, and the rate was 14.0%. HHYP was an independent predictor of stroke with an adjusted odds ratio of 1.752 (95% CI 1.338–2.105). The geographical distribution pattern of the Hhcy epidemic reflects dynamic differences, and national strategies should be carried out to further improve the care of patients with Hhcy across China.

Keywords： homocysteine     hyperhomocysteinemia     H-type hypertension     Chinese    

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Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 4, doi: 10.1007/s11783-021-1475-6

Abstract:

• The concentrations of 13 heavy metals in Taihu Lake were analyzed.

Keywords： Heavy metals     Human health ambient water quality criteria     Taihu Lake     Health risk assessment     Contribution    

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Screening of potential aquatic probiotics from the major microflora of guppies (

Aparna BALAKRISHNA, T. R. KEERTHI

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 2,   Pages 163-173 doi: 10.1007/s11705-012-1283-4

Abstract: The fish ( ) was used as the source for probiotics. 46 bacterial isolates were obtained from the skin, gills, guts and intestines of the guppy, (collected from a government model fish farm in Kottayam, India). Of the above isolated strains, four isolates were selected based on their inhibitory spectrum against five indicator strains, 1739, 3906, 2495, 1271 and 1424 (standard cultures collected from Microbial Type Culture Collection (MTCC) Chandigarh, India). Among the resulting isolates, two were gram-positive cocci, namely MBTU-PB2 and MBTU-PB3 and belong to the genus . The other two were gram-negative rods, namely MBTU-PB1 and MBTU-PB4, of the genera and , respectively. The basic probiotic characteristics of these isolates such as the production of bacteriocin like inhibitory substances (BLIS), antibiotic sensitivities and growth profiles were also determined. The above four isolated strains exhibited different antagonisms than the five indicator strains. During incubation, the antibacterial activity gradually increased in the inhibition zone and was influenced by the lag period ( ) and doubling time. The lag periods for most of the four selected strains were shorter than those of the indicator strains and the isolates had different growth rates ( ) than the indicator strains. All four isolates produced BLIS, however, the strains had different BLIS activities against the indicator strains. Treatment of the neutralized cell free supernatants of the selected isolates with proteases eliminated or reduced the BLIS activity, suggesting a proteinaceous nature of the inhibitory compounds. Further, the optimum BLIS activity was observed at neutral pH after 18 h of incubation. The antibiotic sensitivity assay revealed that the isolates were susceptible to routinely used antibiotics, whereas the plasmid profiles showed that the plasmids had no role in the antagonistic properties of the four isolated strains. The results showed that the isolates could be a promising source for biocontrol agents in aquacultures.

Keywords： aquaculture     normal flora     immunomodulatory effect     probiotic     antagonistic principle     bacteriocin like inhibitory substances    

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Low-k integration: Gas screening for cryogenic etching and plasma damage mitigation

Romain Chanson, Remi Dussart, Thomas Tillocher, P. Lefaucheux, Christian Dussarrat, Jean François de Marneffe

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 511-516 doi: 10.1007/s11705-019-1820-5

Abstract: The integration of porous organo-silicate low- materials has met a lot of technical challenges. One of the main issues is plasma-induced damage, occurring for all plasma steps involved during interconnects processing. In the present paper, we focus on porous SiOCH low- damage mitigation using cryogenic temperature so as to enable micro-capillary condensation. The aim is to protect the porous low- from plasma-induced damage and keep the -value of the material unchanged, in order to limit the RC delay of interconnexion levels while shrinking the microchip dimension. The cryogenic temperature is used to condense a gas inside the porous low- material. Then, the etching process is performed at the temperature of condensation in order to keep the condensate trapped inside the material during the etching. In the first part of this work, the condensation properties of several gases are screened, leading to a down selection of five gases. Then, their stability into the porous structure is evaluated at different temperature. Four of them are used for plasma damage mitigation comparison. Damage mitigation is effective and shows negligible damage for one of the gases at –50°C.

Keywords： low-k     nanotechnology     micro-electronics     cryo-etching     plasma processing    

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Title Author Date Type Operation

Screening of indicator pharmaceuticals and personal care products in landfill leachates: a case study

Journal Article

Finite element analysis of stress concentrations and failure criteria in composite plates with circular

Abdelhak KHECHAI,Abdelouahab TATI,Abdelhamid GUETTALA

Journal Article

Trapezoidal Intuitionistic Fuzzy Aggregation Operator Based on Choquet Integral and Its Application to Multi-Criteria

Xi-hua Li,Xiao-hong Chen

Journal Article

Low-dose CT for lung cancer screening: opportunities and challenges

Hongbing Shen

Journal Article

Concepts and implementation of strain-based criteria in design codes for steel structures

Reidar BJORHOVDE

Journal Article

LSSVM-based approach for refining soil failure criteria and calculating safety factor of slopes

Shiguo XIAO; Shaohong LI

Journal Article

Research on Seawall Flood Defense Criteria

Lu Yongjin, ,He Yousheng,Liu Hua

Journal Article

Systematic screening procedure and innovative energy-saving design for ionic liquid-based extractive

Journal Article

Combination of ARTP mutagenesis and color-mediated high-throughput screening to enhance 1-naphthol yield

Chenggang Qiu, Alei Zhang, Sha Tao, Kang Li, Kequan Chen, Pingkai Ouyang

Journal Article

Obesity in China: its characteristics, diagnostic criteria, and implications

Weiping Jia

Journal Article

Diagnostic criteria of latent autoimmune diabetes in adults (LADA): a review and reflection

Yu Liao, Yufei Xiang, Zhiguang Zhou

Journal Article

Status of hyperhomocysteinemia in China: results from the China Stroke High-risk Population Screening

Journal Article

Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake

Journal Article

Screening of potential aquatic probiotics from the major microflora of guppies (

Aparna BALAKRISHNA, T. R. KEERTHI

Journal Article

Low-k integration: Gas screening for cryogenic etching and plasma damage mitigation

Romain Chanson, Remi Dussart, Thomas Tillocher, P. Lefaucheux, Christian Dussarrat, Jean François de Marneffe

Journal Article