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Factors affecting the distribution of microplastics in soils of China

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1710-4

Abstract:

● Microplastic (MP) abundance in soil of China was highly heterogeneous

Keywords： Microplastic distribution     Microplastic heterogeneity     Effecting factors     Agriculture     Socio-economic    

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Mechanism and characterization of microplastic aging process: A review

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1700-6

Abstract:

● Methods for estimating the aging of environmental micro-plastics were highlighted.

Keywords： Microplastics     Aging     Degradation     Characterization     Mechanism    

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Heterogeneity of the tumor immune microenvironment and clinical interventions

Frontiers of Medicine 2023, Volume 17, Issue 4,   Pages 617-648 doi: 10.1007/s11684-023-1015-9

Abstract: Heterogeneity of the tumor immune microenvironment and clinical interventions

Keywords： Heterogeneity tumor immune    

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Intratumor heterogeneity, microenvironment, and mechanisms of drug resistance in glioma recurrence and

Zhaoshi Bao, Yongzhi Wang, Qiangwei Wang, Shengyu Fang, Xia Shan, Jiguang Wang, Tao Jiang

Frontiers of Medicine 2021, Volume 15, Issue 4,   Pages 551-561 doi: 10.1007/s11684-020-0760-2

Abstract: Several studies correlated tumor recurrence with tumor heterogeneity and the immune microenvironment.this review, we introduce the different mechanisms involved in glioma progression, including tumor heterogeneity

Keywords： glioma     evolution mechanism     strategies     tumor heterogeneity     secondary glioma    

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Heterogeneity of chronic obstructive pulmonary disease: from phenotype to genotype

Xu Chen, Xiaomao Xu, Fei Xiao

Frontiers of Medicine 2013, Volume 7, Issue 4,   Pages 425-432 doi: 10.1007/s11684-013-0295-x

Abstract: This review briefly describes the heterogeneity of COPD, with focus on recent advances in the correlations

Keywords： chronic obstructive pulmonary disease     heterogeneity     phenotype     genotype     prediction    

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Microplastic and Nanoplastic Pollution: Characterization, Transport, Fate, and Remediation Strategies

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 1,   Pages 12-12 doi: 10.1007/s11783-021-1446-y

Abstract: Microplastic (<5 mm) particles, for instance, have been detected in the aquatic environment globallyspecial issue successfully garnered a collection of research articles that addressed various topics of microplastic
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V-shaped substrate for surface and volume enhanced Raman spectroscopic analysis of microplastics

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1578-8

Abstract:

● V-shaped substrate was obtained for SERS analysis of microplastics (diameter ≈ 1 μm).

Keywords： SERS     V-shaped     AAO     Microplastic     Atmospheric aerosol    

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Algae (

Xuesong Liu, Jianmin Wang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1276-3

Abstract: Abstract • Micro-plastics (MPs) significantly increase Pb toxicity. • Algae reduce the combined toxicity of MP and Pb. • The toxicity increase comes from high soluble Pb and MP-Pb uptake. • The toxicity reduction might come from energy related pathway. Microplastics (MPs) have been recognized as a new class of emerging contaminants in recent years. They not only directly impact aquatic organisms, but also indirectly impact these organisms by interacting with background toxins in the environment. Moreover, under realistic environmental conditions, algae, a natural food for aquatic organisms, may alter the toxicity pattern related to MPs. In this research, we first examined the toxicity of MPs alone, and their effect on the toxicity of lead (Pb) on Ceriodaphnia dubia (C. dubia), a model aquatic organism for toxicity survey. Then, we investigated the effect of algae on the combined toxicity of MPs and Pb. We observed that, MPs significantly increased Pb toxicity, which was related to the increase in soluble Pb concentration and the intake of Pb-loaded MPs, both of which increased the accumulation of Pb in C. dubia. The presence of algae mitigated the combined toxicity of MPs and Pb, although algae alone increased Pb accumulation. Therefore, the toxicity mitigation through algae uptake came from mechanisms other than Pb accumulation, which will need further investigation.

Keywords： Microplastic     Lead     Toxicity     Algae     C. dubia    

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Abundance, spatial distribution, and physical characteristics of microplastics in stormwater detention ponds

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1724-y

Abstract: Despite extensive research on microplastics (MP) in marine environments, little is known about MP abundance and transport in terrestrial systems. There is, therefore, still little understanding of the main mechanisms driving the substantial transport of MP across different environmental compartments. Storm events can transport MP beyond boundaries, such as from the land to groundwater or the ocean, as has already been discovered for organic carbon transport. Urban stormwater detention ponds are suitable environments to study the impact of stormwater on the environmental fate and transport of MP. Herein, we investigate the longitudinal and vertical distribution of MP within two detention ponds with different physical characteristics. Soil samples were collected at various locations and from multiple depths (surface and subsurface layers) for measuring MP concentrations using fluorescence microscopy. Our findings show that MP are retained more near the inlet of the ponds, and MP of larger sizes were found more abundantly near inlets than outlets. We also found that MP mass and sizes decrease from surface soil to subsurface soil. In the pond, where vegetation (grass root network) was more considerable, MP were found more evenly distributed along the depth. In terms of shape, the fragments were the most abundant MP shape.

Keywords： Microplastic     Environmental transport     Soil pollution     Stormwater     Detention ponds    

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Computational modeling of fracture in concrete: A review

Luthfi Muhammad Mauludin, Chahmi Oucif

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 586-598 doi: 10.1007/s11709-020-0573-z

Abstract: As heterogeneity of concrete material is major concern in micromechanical-based concrete modeling, one

Keywords： concrete fracture     macroscopic     micromechanical     heterogeneity    

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Analysis of stress and failure in rock specimens with closed and open flaws on the surface

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1222-1237 doi: 10.1007/s11709-021-0773-1

Abstract: The influence of closed and open surface flaws on the stress distribution and failure in rock specimens is investigated. Heterogeneous finite element models are developed to simulate the compression tests on flawed rock specimens. The simulated specimens include those with closed flaws and those with open flaws on the surface. Systematic analyses are conducted to investigate the influences of the flaw inclination, friction coefficient and the confining stress on failure behavior. Numerical results show significant differences in the stress, displacement, and failure behavior of the closed and open flaws when they are subjected to pure compression; however, their behaviors under shear and tensile loads are similar. According to the results, when compression is the dominant mode of stress applied to the flaw surface, an open flaw may play a destressing role in the rock and relocate the stress concentration and failure zones. The presented results in this article suggest that failure at the rock surface may be managed in a favorable manner by fabricating open flaws on the rock surface. The insights gained from this research can be helpful in managing failure at the boundaries of rock structures.

Keywords： surface flaw     heterogeneity     circular hole     numerical modeling     relative displacement    

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A multiscale material model for heterogeneous liquid droplets in solid soft composites

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1292-1299 doi: 10.1007/s11709-021-0771-3

Abstract: Liquid droplets in solid soft composites have been attracting increasing attention in biological applications. In contrary with conventional composites, which are made of solid elastic inclusions, available material models for composites including liquid droplets are for highly idealized configurations and do not include all material real parameters. They are also all deterministic and do not address the uncertainties arising from droplet radius, volume fraction, dispersion and agglomeration. This research revisits the available models for liquid droplets in solid soft composites and presents a multiscale computational material model to determine their elastic moduli, considering nearly all relevant uncertainties and heterogeneities at different length scales. The effects of surface tension at droplets interface, their volume fraction, size, size polydispersity and agglomeration on elastic modulus, are considered. Different micromechanical material models are incorporated into the presented computational framework. The results clearly indicate both softening and stiffening effects of liquid droplets and show that the model can precisely predict the effective properties of liquid droplets in solid soft composites.

Keywords： liquid in solid     soft composite     computational modeling     multiscale model     heterogeneity    

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Heterogeneous influence of individuals’ behavior on mask efficacy in gathering environments

Frontiers of Engineering Management   Pages 550-562 doi: 10.1007/s42524-022-0193-5

Abstract: The heterogeneity of individuals can cause mask efficacy in a specific gathering environment to be differentFurthermore, the heterogeneity of gathering environments causes the epidemic prevention effect of masksGiven the heterogeneity of individual behavior, if individuals who are more active in terms of interpersonal

Keywords： COVID-19     masks     behavioral heterogeneity     asymptomatic infection    

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Data quality assessment for studies investigating microplastics and nanoplastics in food products: Are current data reliable?

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1694-0

Abstract:

● Data quality assessment criteria for MP/NPs in food products were developed.

Keywords： Microplastic     Nanoplastic     Food products     Data quality     Human health risk    

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Temporal and spatial stability of the EM/PM molecular subtypes in adult diffuse glioma

Frontiers of Medicine 2023, Volume 17, Issue 2,   Pages 240-262 doi: 10.1007/s11684-022-0936-z

Abstract: Detailed characterizations of genomic alterations have not identified subtype-specific vulnerabilities in adult gliomas. Mapping gliomas into developmental programs may uncover new vulnerabilities that are not strictly related to genomic alterations. After identifying conserved gene modules co-expressed with EGFR or PDGFRA (EM or PM), we recently proposed an EM/PM classification scheme for adult gliomas in a histological subtype- and grade-independent manner. By using cohorts of bulk samples, paired primary and recurrent samples, multi-region samples from the same glioma, single-cell RNA-seq samples, and clinical samples, we here demonstrate the temporal and spatial stability of the EM and PM subtypes. The EM and PM subtypes, which progress in a subtype-specific mode, are robustly maintained in paired longitudinal samples. Elevated activities of cell proliferation, genomic instability and microenvironment, rather than subtype switching, mark recurrent gliomas. Within individual gliomas, the EM/PM subtype was preserved across regions and single cells. Malignant cells in the EM and PM gliomas were correlated to neural stem cell and oligodendrocyte progenitor cell compartment, respectively. Thus, while genetic makeup may change during progression and/or within different tumor areas, adult gliomas evolve within a neurodevelopmental framework of the EM and PM molecular subtypes. The dysregulated developmental pathways embedded in these molecular subtypes may contain subtype-specific vulnerabilities.

Keywords： glioma progression     molecular classification     EM/PM subtyping     intratumor heterogeneity    

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Title Author Date Type Operation

Factors affecting the distribution of microplastics in soils of China

Journal Article

Mechanism and characterization of microplastic aging process: A review

Journal Article

Heterogeneity of the tumor immune microenvironment and clinical interventions

Journal Article

Intratumor heterogeneity, microenvironment, and mechanisms of drug resistance in glioma recurrence and

Zhaoshi Bao, Yongzhi Wang, Qiangwei Wang, Shengyu Fang, Xia Shan, Jiguang Wang, Tao Jiang

Journal Article

Heterogeneity of chronic obstructive pulmonary disease: from phenotype to genotype

Xu Chen, Xiaomao Xu, Fei Xiao

Journal Article

Microplastic and Nanoplastic Pollution: Characterization, Transport, Fate, and Remediation Strategies

Journal Article

V-shaped substrate for surface and volume enhanced Raman spectroscopic analysis of microplastics

Journal Article

Algae (

Xuesong Liu, Jianmin Wang

Journal Article

Abundance, spatial distribution, and physical characteristics of microplastics in stormwater detention ponds

Journal Article

Computational modeling of fracture in concrete: A review

Luthfi Muhammad Mauludin, Chahmi Oucif

Journal Article

Analysis of stress and failure in rock specimens with closed and open flaws on the surface

Journal Article

A multiscale material model for heterogeneous liquid droplets in solid soft composites

Journal Article

Heterogeneous influence of individuals’ behavior on mask efficacy in gathering environments

Journal Article

Data quality assessment for studies investigating microplastics and nanoplastics in food products: Are current data reliable?

Journal Article

Temporal and spatial stability of the EM/PM molecular subtypes in adult diffuse glioma

Journal Article