1,027 results match your criteria capacity cec

Effect of Manure and Compost on the Phytostabilization Potential of Heavy Metals by the Halophytic Plant Wavy-Leaved Saltbush.

Plants (Basel) 2021 Oct 14;10(10). Epub 2021 Oct 14.

Department of Botany and Microbiology, Faculty of Science, Assiut University, Assiut 71516, Egypt.

This study aimed to use organic fertilizers, e.g., compost and manures, and a halophytic plant [wavy-leaved saltbush ()] to remediate an agricultural soil polluted with toxic elements. Read More

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October 2021

Synthesis of Porous Material from Coal Gasification Fine Slag Residual Carbon and Its Application in Removal of Methylene Blue.

Molecules 2021 Oct 10;26(20). Epub 2021 Oct 10.

School of Chemical Engineering and Technology, China University of Mining and Technology, No. 1 Daxue Road, Xuzhou 221116, China.

A large amount of coal gasification slag is produced every year in China. However, most of the current disposal is into landfills, which causes serious harm to the environment. In this research, coal gasification fine slag residual carbon porous material (GFSA) was prepared using gasification fine slag foam flotation obtained carbon residue (GFSF) as raw material and an adsorbent to carry out an adsorption test on waste liquid containing methylene blue (MB). Read More

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October 2021

HDL and reverse cholesterol transport in humans and animals: Lessons from pre-clinical models and clinical studies.

Biochim Biophys Acta Mol Cell Biol Lipids 2021 Oct 9;1867(1):159065. Epub 2021 Oct 9.

Division of Translational Medicine & Human Genetics, Perelman School of Medicine at the University of Pennsylvania, 3600 Spruce Street, Philadelphia, PA 19104, USA.

The ability to accept cholesterol from cells and to promote reverse cholesterol transport (RCT) represents the best characterized antiatherogenic function of HDL. Studies carried out in animal models have unraveled the multiple mechanisms by which these lipoproteins drive cholesterol efflux from macrophages and cholesterol uptake to the liver. Moreover, the influence of HDL composition and the role of lipid transporters have been clarified by using suitable transgenic models or through experimental design employing pharmacological or nutritional interventions. Read More

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October 2021

Cross-Sectional Associations Between HDL Structure or Function, Cell Membrane Fatty Acid Composition, and Inflammation in Elderly Adults.

J Nutr 2021 Oct 12. Epub 2021 Oct 12.

Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Unitat de Nutrició, Reus, Spain.

Background: Cell membrane fatty acid composition has been related to inflammation and cardiovascular risk. Dysregulation of HDL functionis also considered a cardiovascular risk factor.

Objective: We aimed to investigate whether the content of cell membrane fatty acids and HDL functionality are linked to each other as well as to inflammation. Read More

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October 2021

Impact of real and simulated municipal solid waste leachates on the hydraulic and swelling behaviour of bentonites for landfill application.

Environ Monit Assess 2021 Oct 7;193(11):701. Epub 2021 Oct 7.

Department of Civil Engineering, Indian Institute of Technology Guwahati, Assam, India.

For the efficient functioning of a landfill, compacted bentonite is an acclaimed liner element due to its excellent adsorption capability, minimal hydraulic conductivity, and superior specific surface area (SSA). However, the leachate generation within the landfill worsens the liner material's quality, causing migration of the leachates, contaminating groundwater, and causing pollution of surrounding environment. With this perspective, a comparative assessment of the influence of real and simulated municipal solid waste (MSW) leachate on two different bentonites has been carried out in the present investigation. Read More

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October 2021

Multigenerational exposure of the collembolan Folsomia candida to soil metals: Adaption to metal stress in soils polluted over the long term.

Environ Pollut 2021 Sep 29;292(Pt A):118242. Epub 2021 Sep 29.

CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.

Multigenerational tests provide a comprehensive assessment of the long-term toxicity of pollutants. Here, the multigenerational effects of soil metal contamination on Folsomia candida were investigated over five generations (generations 1-5: F1-F5). Nine soils with varying physicochemical properties and degrees of metal pollution were studied. Read More

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September 2021

Valorization of Moroccan Bentonite Deposits: "Purification and Treatment of Margin by the Adsorption Process".

Molecules 2021 Sep 12;26(18). Epub 2021 Sep 12.

Laboratory of Geosciences Georesources and Environment, Department of Geology, Faculty of Science and Technology University Cadi Ayyad, Marrakech 40000, Morocco.

The main objective of this work was to contribute to the reduction in the contamination of phenolic compounds contained in margin by an adsorption process on two types of raw bentonite. The margin used in the studies was collected from a semi-modern oil mill located in the Nador-Morocco region. The results of the physico-chemical analyses showed that the effluents of the oil mills showed that they are highly polluted, particularly in terms of the total suspended solids (TSS), chemical oxygen demand (COD), and iron content of around 154. Read More

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September 2021

Lysis reagents, cell numbers, and calculation method influence high-throughput measurement of HDL-mediated cholesterol efflux capacity.

J Lipid Res 2021 Sep 24:100125. Epub 2021 Sep 24.

Institute of Genetic Epidemiology, Department of Genetics and Pharmacology, Medical University of Innsbruck, Innsbruck, Austria. Electronic address:

HDL-mediated cholesterol efflux capacity (CEC) may protect against cardiovascular disease. However, CEC assays are not standardized, hampering their application in large cohorts and comparison between studies. To improve standardization, we systematically investigated technical differences between existing protocols that influence assay performance that have not been previously addressed. Read More

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September 2021

Physicochemical Changes in Biomass Chars by Thermal Oxidation or Ambient Weathering and Their Impacts on Sorption of a Hydrophobic and a Cationic Compound.

Environ Sci Technol 2021 10 24;55(19):13072-13081. Epub 2021 Sep 24.

Department of Environmental Sciences, The Connecticut Agricultural Experiment Station, 123 Huntington St., P.O. Box 1106, New Haven, Connecticut 06504-1106, United States.

This study examined conditions that mimic oxidative processes of biomass chars during formation and weathering in the environment. A maple char prepared at the single heat treatment temperature of 500 °C for 2 h was exposed to different thermal oxidation conditions or accelerated oxidative aging conditions prior to sorption of naphthalene or the dication paraquat. Strong chemical oxidation (SCO) was included for comparison. Read More

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October 2021

An efficient biochar synthesized by iron-zinc modified corn straw for simultaneously immobilization Cd in acidic and alkaline soils.

Environ Pollut 2021 Sep 7;291:118129. Epub 2021 Sep 7.

Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, People's Republic of China; Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, People's Republic of China.

Synthetic functional biochar using agricultural waste as raw materials not only serves as an effective means for recycling waste but can also be employed for the remediation of heavy metal contaminated soil. However, the associated effect and mechanism underlying the immobilization of functional biochar in acidic and alkaline soils remain unclear. In this study, a novel iron-zinc oxide composite modified corn straw (Fe/Zn-YBC) was prepared and applied for the remediation of cadmium-contaminated acidic and alkaline farmland soils. Read More

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September 2021

Cholesterol efflux capacity and its association with prevalent metabolic syndrome in a multi-ethnic population (Dallas Heart Study).

PLoS One 2021 21;16(9):e0257574. Epub 2021 Sep 21.

Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America.

Metabolic syndrome (MetS) is characterized by adiposity and atherogenic dyslipidemia consisting of elevated triglyceride and decreased high density lipoprotein cholesterol (HDL-C) levels however, cholesterol concentration alone does not reflect HDL functionality. Cholesterol efflux capacity (CEC) captures a key anti-atherosclerotic function of HDL; studies linking CEC to MetS have yielded inconsistent findings and lacked racial/ethnic diversity. The aim of this study was to evaluate the association between CEC and MetS in a large multi-ethnic population utilizing two different CEC assays interrogating overlapping but distinct reverse cholesterol transport pathways. Read More

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September 2021

Porous layer open-tubular column with styrene and itaconic acid-copolymerized polymer as stationary phase for capillary electrochromatography-mass spectrometry.

Electrophoresis 2021 Sep 9. Epub 2021 Sep 9.

Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministryof Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, Wuhan University School of Pharmaceutical Sciences, Wuhan, P. R. China.

Enhancing the specific surface area of stationary phase is important in chromatographic science, especially in open-tubular column in which the coating only exists on the inner surface. In this work, a porous layer open-tubular (PLOT) column with stationary phase of styrene and itaconic acid-copolymerized polymer was developed. Thermal-initiated polymerization method with strategies like controlling the ratio of reaction reagents to solvents and reaction time, confinement by the narrow inner diameter of capillary were used for preparing the stationary phase with uniform structure and relatively thick layer. Read More

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September 2021

Characterization and purification of Algerian natural bentonite for pharmaceutical and cosmetic applications.

BMC Chem 2021 Sep 1;15(1):50. Epub 2021 Sep 1.

Mining Department of National Polytechnic School, 10 Avenue Hassen Badi BP 182 El Harrach, 16200, Algiers, Algeria.

Introduction: Bentonitic clays from the Hammam Boughrara deposit in the Maghnia area (northwestern Algeria) were studied by mineralogical, chemical and physicochemical characterization to evaluate their potential suitability as raw and purified materials in pharmaceutical and cosmetic applications.

Methodology: Natural bentonite was purified by Na+ ion exchange treatment combined with sedimentation techniques. Before use in the pharmaceutical industry, bentonite samples must be safe and conform to recommendations and directives of pharmacopeia. Read More

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September 2021

Herbivory and misidentification of target habitat constrain region-wide restoration success of spekboom () in South African subtropical succulent thicket.

PeerJ 2021 11;9:e11944. Epub 2021 Aug 11.

Botany Department, Nelson Mandela University, Port Elizabeth, Eastern Cape, South Africa.

Restoration of degraded subtropical succulent thicket, via the planting of (spekboom) truncheons, is the focus of a public works programme funded by the South African government. The goals of the programme, which started in 2004, are to create jobs, sequester carbon, restore biodiversity, reduce erosion, improve soil water holding capacity and catalyse private sector investment for upscaling of restoration. Here we report on a region-wide experiment to identify factors that can improve project success. Read More

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Cholesterol Efflux Capacity Associates with the Ankle-Brachial Index but Not All-Cause Mortality in Patients with Peripheral Artery Disease.

Diagnostics (Basel) 2021 Aug 4;11(8). Epub 2021 Aug 4.

Institute of Clinical Chemistry, University Hospital Zurich, University of Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland.

Background: Cholesterol efflux is an important mechanism by which high-density lipoproteins (HDLs) protect against cardiovascular disease. As peripheral artery disease (PAD) is associated with high mortality rates, mainly due to cardiovascular causes, we investigated whether cholesterol efflux capacity (CEC) of apolipoprotein B (apoB)-depleted plasma, a widely used surrogate of HDL function, may serve as a predictive marker for mortality in this patient population.

Methods: In this prospective single-center study (median follow-up time: 9. Read More

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A purified human platelet pellet lysate rich in neurotrophic factors and antioxidants repairs and protects corneal endothelial cells from oxidative stress.

Biomed Pharmacother 2021 Oct 20;142:112046. Epub 2021 Aug 20.

Department of Ophthalmology, Taipei Medical University Hospital, Taipei, Taiwan; Department of Ophthalmology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan. Electronic address:

Human platelet lysate (HPL) is a complex mixture of potent bioactive molecules instrumental in tissue repair and regeneration. Due to their remarkable safety, cost-effective production, and availability at global level from collected platelet concentrates, HPLs can become a powerful biotherapy for various therapeutic applications, if standardized and carefully validated through pre-clinical and clinical studies. In this work, the possibility to use a tailor-made HPL as a corneal transplant alternative to treat the gradual decrease in the number of corneal endothelial cells (CECs) associated with aging, was evaluated. Read More

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October 2021

Hydrothermally-altered feldspar reduces metal toxicity and promotes plant growth in highly metal-contaminated soils.

Chemosphere 2021 Aug 4;286(Pt 2):131768. Epub 2021 Aug 4.

Federal University of Lavras, Department of Soil Science, School of Agriculture, Lavras, Minas Gerais, Brazil. Electronic address:

Novel green technologies for soil remediation have been focusing on altering soil properties and improving soil health. Hydrothermally-altered feldspar (HYP, HydroPotash), recently developed, is being related as both an efficient amendment to immobilize heavy metals in soils and a plant nutrients source, consisting in a promising technology for revegetation of contaminated sites. In order to evaluate the effectiveness of using HYP for phytostabilization programs, two different soils (Technosol and Oxisol) collected from a smelting site were amended with increasing doses of HYPs (HYP-1 and HYP-2): 15, 30, 60, and 120 Mg ha. Read More

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Elucidating the impact of three metallic nanoagrichemicals and their bulk and ionic counterparts on the chemical properties of bulk and rhizosphere soils in rice paddies.

Environ Pollut 2021 Dec 19;290:118005. Epub 2021 Aug 19.

Zachry Department of Civil and Environmental Engineering, Texas A&M University, College Station, TX, 77843, USA. Electronic address:

Growing applications of nanoagrichemicals have resulted in their increasing accumulation in agricultural soils, which could modify soil properties and affect soil health. A greenhouse pot trial was conducted to determine the effects of three metallic nanoagrichemicals on several fundamental chemical properties of a rice paddy soil, including zinc oxide nanoparticles (ZnO NPs) and copper oxide nanoparticles (CuO NPs) at 100 mg/kg, and silicon oxide nanoparticles (SiO NPs) at 500 mg/kg, as well as their bulk and ionic counterparts. The investigated soil amendments displayed significant and distinctive impact on the examined soil chemical properties relevant to agricultural production, including soil pH, redox potential, soil organic carbon (SOC), cation exchange capacity (CEC), and plant available As. Read More

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December 2021

Associations of endogenous hormones with HDL novel metrics across the menopause transition: The SWAN HDL Study.

J Clin Endocrinol Metab 2021 Aug 14. Epub 2021 Aug 14.

Department of Epidemiology, University of Pittsburgh, Graduate School of Public Health Pittsburgh PA.

Context: Novel metrics of HDL (subclasses, lipid content and function) may better characterize the anti-atherogenic features of HDL. In midlife women, changes in these metrics vary by time relative to the final menstrual period (FMP), supporting a contribution of menopause hormones estradiol (E2) and follicle-stimulating hormone (FSH).

Objective: To test associations of endogenous E2 and FSH with novel HDL metrics and to assess whether these associations vary by time relative to FMP. Read More

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Effect of Humic Acid Addition on Buffering Capacity and Nutrient Storage Capacity of Soilless Substrates.

Front Plant Sci 2021 26;12:644229. Epub 2021 Jul 26.

Key Laboratory of Horticultural Crops Genetic Improvement (Ministry of Agriculture), Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China.

Excessive application of fertilizers has become a major issue in croplands of intensive agricultural systems in China, resulting in severe non-point source pollution; thus, reduction in the use of chemical fertilizers has received significant attention. Improving the nutrient storage capacity of soils or substrates is an effective approach for solving this problem. Humic acids (HA) are excellent soil conditioners. Read More

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Numerical reproduction of dissolved U concentrations in a PO-treated column study of Hanford 300 area sediment using a simple ion exchange and immobile domain model.

J Environ Radioact 2021 Oct 3;237:106708. Epub 2021 Aug 3.

Department of Applied Energy, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, 464-8603, Japan.

We succeeded at numerical reproduction of dissolved U concentrations from column experiments with PO-treated Hanford 300 Area sediment using a simple ion exchange and immobile domain model. The time-series curves of dissolved U concentrations under various Darcy flow rate conditions were reproduced by the numerical model in the present study through optimization of the following parameters: the mass of U in mobile domain (on surface soil connected to the stream) to fit the starting U concentration at the column exit, and the rest of the total U was left as precipitation in immobile domain (isolated in deep soil); the mixing ratio between immobile and mobile domains, to fit the final recovering curve of concentration; and the cation exchange capacity (CEC) and equilibrium constant (k) of the exchange reaction of UO and H on simulated soil surface (Z), to fit the transient equilibrium concentration, forming the bed of the bathtub curve. Numerical setting of no U in immobile domain or no mixing between immobile and mobile domains caused all U flushed out of the column exit, and setting of no CEC on Z formed no transient equilibrium concentration. Read More

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October 2021

High-density lipoprotein remodeling by phospholipid nanoparticles improves cholesterol efflux capacity and protects from atherosclerosis.

Biomed Pharmacother 2021 Sep 13;141:111900. Epub 2021 Jul 13.

Clinical Research Department, Institute of Biomedical Chemistry, 119121 Moscow, Russia. Electronic address:

The efficiency of cholesterol efflux from cells promoted by high-density lipoproteins (HDLs) depends on HDL concentration and functional properties. The term "dysfunctional HDL" describes HDLs with impaired protective properties. Cholesterol efflux capacity (CEC) of HDL is reduced in patients with atherosclerosis, but the exact mechanisms underlying this impairment are not well characterized. Read More

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September 2021

Predicting biochar cation exchange capacity using Fourier transform infrared spectroscopy combined with partial least square regression.

Sci Total Environ 2021 Nov 29;794:148762. Epub 2021 Jun 29.

Department of Soil Science, School of Agricultural Sciences, Federal University of Lavras, Lavras, Minas Gerais 37200-900, Brazil.

Determination of cation exchange capacity (CEC) in biochar by applying traditional wet methods is laborious, time-consuming, and generates chemical wastes. In this study, models were developed based on partial least square regression (PLSR) to predict CECs of biochars produced from a wide variety of feedstocks using Fourier transform infrared spectroscopy (FTIR). PLSR models used to predict CEC of biochars on weight (CEC-W) and carbon (CEC-C) basis were obtained from twenty-four biochars derived from several origins of feedstock, as well as compositions and mixtures, including four reference biochar samples. Read More

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November 2021

Treatment of the saline-alkali soil with acidic corn stalk biochar and its effect on the sorghum yield in western Songnen Plain.

Sci Total Environ 2021 Nov 21;797:149190. Epub 2021 Jul 21.

College of Chemistry, Jilin University, Changchun 130012, China; Weihai Institute for Bionics-Jilin University, Weihai 264400, China. Electronic address:

Due to biochar could improve the physical and chemical properties of soil and promote crop growth, it is widely used in soil remediation, especially in saline soil. However, it is rarely studied of the application of acidic biochar in saline-alkali land. A field experiment with acidic corn stalk biochar (ACSBC) as a soil amendment was carried out in the western Songnen Plain of China. Read More

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November 2021

[Investigation of Soil Fungal Communities and Functionalities within Karst Paddy Fields].

Huan Jing Ke Xue 2021 Aug;42(8):4005-4014

College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China.

Fungi are important drivers of soil biogeochemical cycles. However, the characteristics of fungal community structures and functional groups within karst area (KA) soils remain understudied. Top soil samples were collected from paddy fields within a KA and non-karst area (NKA) containing red soil, in the Maocun karst experimental site of Guilin. Read More

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Interactions among heavy metal bioaccessibility, soil properties and microbial community in phyto-remediated soils nearby an abandoned realgar mine.

Chemosphere 2021 Jul 22;286(Pt 1):131638. Epub 2021 Jul 22.

College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha, 410083, China. Electronic address:

Soil samples were collected from a representative arsenic (As) contaminated region under phytoremediation of hyperaccumulation plants. Relative abundance and diversity of microbial communities in the soil samples were characterized via 16S rRNA genes sequencing. At the phylum level, Proteobacteria, Actinobacteria, Acidobacteria, Bacteroidetes, Gemmatimonadetes and Firmicutes shows the highest abundance, accounting for more than 90 % of the classified sequences in the soil samples. Read More

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Associations of HDL metrics with coronary artery calcium score and density among women traversing menopause.

J Lipid Res 2021 Jul 22;62:100098. Epub 2021 Jul 22.

Departments of Medicine and Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.

The cardioprotective association of high-density lipoprotein cholesterol (HDL-C) may vary by menopause stage or estradiol level. We tested whether associations of comprehensive HDL metrics (HDL subclasses, phospholipid and triglyceride content, and HDL cholesterol efflux capacity [HDL-CEC]) with coronary artery calcium (CAC) score and density vary by menopause stage or estradiol level in women transitioning through menopause. Participants (N = 294; mean age [SD]: 51. Read More

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Evaluation of Cadmium Transfer from Soil to the Human Body Through Maize Consumption in a Cadmium Anomaly Area of Southwestern China.

Environ Toxicol Chem 2021 Oct 13;40(10):2923-2934. Epub 2021 Sep 13.

College of Resources and Environmental Engineering, Guizhou University, Guiyang, China.

Evaluating the bioavailability, bioaccessibility, and transferability of cadmium (Cd) in soil-grain-human systems is essential in areas with a Cd anomaly in the karst region of southwestern China. In the present study, the main controlling factors and prediction models for Cd transfer in a soil-grain-human system were investigated in a typical area where natural processes and anthropogenic activities interact in the karst region of southwestern China. The environmental availability of Cd (diethylenetriaminepentaacetic acid- and CaCl -extractable Cd [ ]) in the soil varies significantly because of the diversity of soil properties. Read More

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October 2021

Effect of metformin on the high-density lipoprotein proteome in youth with type 1 diabetes.

Endocrinol Diabetes Metab 2021 Jul 9;4(3):e00261. Epub 2021 May 9.

Saha Cardiovascular Research Center University of Kentucky Lexington KY USA.

Background: Youth with type 1 diabetes (T1D) have normal or elevated High-Density Lipoprotein Cholesterol (HDL-C), however, the function of HDL, partly mediated by the HDL proteome, may be impaired. Metformin can be used as an adjunct therapy in youth with T1D, but its effects on the HDL proteome are unknown.

Objective: To determine the effect of metformin on the HDL proteome. Read More

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Soil physicochemical (colloidal) properties affected by ozonated water and organic fertilization.

Biomass Convers Biorefin 2021 Jul 11:1-11. Epub 2021 Jul 11.

Department of Soil Science, College of Agriculture, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.

More has to be investigated on the use of ozonated water (O3) for the improvement of growth medium properties. Accordingly, the objective was to examine the effects of O3 (control, 0.5, 1. Read More

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