93,379 results match your criteria evaluated influence

Can pre-ozonation be combined with gravity-driven membrane filtration to treat shale gas wastewater?

Sci Total Environ 2021 Jul 20;797:149181. Epub 2021 Jul 20.

Key Laboratory of Deep Earth Science and Engineering (Ministry of Education), College of Architecture and Environment, Institute of New Energy and Low-Carbon Technology, Institute for Disaster Management and Reconstruction, Sichuan University, Chengdu, Sichuan 610207, PR China; Yibin Institute of Industrial Technology, Sichuan University, Yibin Park, Section 2, Lingang Ave., Cuiping District, Yibin, Sichuan 644000, PR China. Electronic address:

Low-cost gravity-driven membrane (GDM) filtration has the potential to efficiently manage highly decentralized shale gas wastewater (SGW). In this work, the feasibility of combining low dosage pre-ozonation with the GDM process was evaluated in the treatment of SGW. The results showed that pre-ozonation significantly increased the stable flux (372%) of GDM filtration, while slightly deteriorating the quality of the effluent water in terms of organic content (-14%). Read More

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Comparative analysis of peracetic acid (PAA) and permaleic acid (PMA) in disinfection processes.

Sci Total Environ 2021 Jul 21;797:149206. Epub 2021 Jul 21.

Department of Medicine Surgery and Dentistry, University of Salerno, via S. Allende, 84081 Baronissi, SA, Italy.

The growing demand to reduce chlorine usage and control disinfection byproducts increased the development of new strategies in wastewater treatments. Organic peracids are increasingly attracting interest in disinfection activities as a promising alternative to chlorine and chlorine-based agents. In this study, we assessed the antimicrobial properties against Escherichia coli (E. Read More

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A novel green substrate made by sludge digestate and its biochar: Plant growth and greenhouse emission.

Sci Total Environ 2021 Jul 21;797:149194. Epub 2021 Jul 21.

College of Life and Environment Science, Wenzhou University, Wenzhou 325035, China.

Anaerobic digestion of sludge produces a large amount of sewage sludge anaerobic digestate (SSAD) that can be reused. A novel green substrate was prepared by mixing SSAD and its biochar (SSBC) filled with perlite and quartz sand for plant growth, as a replacement of soil. We carried out pot experiment, measured ryegrass biomass, seedling survival rate, and evaluated the emission of greenhouse gas (GHG), NH volatilization. Read More

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Effects of polystyrene and triphenyl phosphate on growth, photosynthesis and oxidative stress of Chaetoceros meülleri.

Sci Total Environ 2021 Jul 21;797:149180. Epub 2021 Jul 21.

Institute of Marine Science and Technology, Shandong University, Qingdao 266237, PR China. Electronic address:

The toxicity of microplastics to marine organisms has attracted much attention; however, studies of their effects on marine microalgae remain limited. Here, the effects of the single and combined toxicity of polystyrene (PS) and triphenyl phosphate (TPhP) on the cell growth, photosynthesis, and oxidative stress of Chaetoceros meülleri were investigated. PS inhibited growth of the algae cells and caused a dose-dependent effect on oxidative stress. Read More

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The catastrophic floods in the Guadiana River basin since 1500 CE.

Sci Total Environ 2021 Jul 21;797:149141. Epub 2021 Jul 21.

Instituto Dom Luiz (IDL), Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisbon, Portugal; Departamento de Meteorologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-916, Brazil.

The task of retrieving information about past flood events is very important to reconstruct flood series data. In this work, a wide range of different sources including newspapers, technical reports, and books was consulted in order to recover information about catastrophic flood events in Badajoz (Spain). A set of 37 catastrophic floods of the Guadiana River that occurred in Badajoz in the winter months (DJFM - December, January, February, and March) have been recovered since 1500 CE. Read More

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The kinetic of calcium silicate hydrate formation from silica and calcium hydroxide nanoparticles.

J Colloid Interface Sci 2021 Jul 3;605:33-43. Epub 2021 Jul 3.

CSGI, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy. Electronic address:

Hypothesis: The mechanism of calcium silicate hydrate (CSH) formation, a relevant component of cement, the largest used material by mankind, is well documented. However, the effects of nano-sized materials on the CSH formation have not yet been evaluated. To this aim, a kinetic study on CSH formation via the "pozzolanic reaction" of nanosilica and calcium hydroxide nanoparticles, and in the presence of hydroxypropyl cellulose (HPC) as hydration regulator, is reported in this paper. Read More

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1 T-MoSe monolayer supported single Pd atom as a highly-efficient bifunctional catalyst for ORR/OER.

J Colloid Interface Sci 2021 Jul 19;605:155-162. Epub 2021 Jul 19.

Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, No. 1, Shida Street, Harbin 150025, PR China. Electronic address:

The development of highly-efficient catalysts for oxygen reduction reaction (ORR) or oxygen evolution reaction (OER) is highly crucial for the commercial applications of some novel energy-related devices. Herein, using comprehensive first-principles computations, the potential of a variety of single metal-based catalysts supported by MoSe nanosheet to boost the ORR or OER process was evaluated. The computations revealed that these considered metal atoms can be more stably anchored on 1 T-MoSe than those of on 2H-MoSe. Read More

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Influence of flocculation conditioning on environmental risk of heavy metals in dredged sediment.

J Environ Manage 2021 Jul 23;297:113313. Epub 2021 Jul 23.

Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, Hubei, China; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China. Electronic address:

This study comprehensively analyzes the environmental risk of heavy metals (HMs) in the dewatering process of dredged sediment. First, the toxicity leaching capacity, total content, and chemical speciation of the HMs (As, Cd, Co, Cr, Cu, Hg, Mo, Pb, Sb, Sr, Tl, Zn) in dewatered sediment were determined using toxicity characteristic leaching procedure and modified Community Bureau of Reference sequential extraction procedure. The ecotoxicity and environmental risk of the HMs were then evaluated based on sediment quality guidelines, geo-accumulation index, enrichment factor, potential ecological risk, and risk assessment code. Read More

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Urinary metals and metal mixtures and timing of natural menopause in midlife women: The Study of Women's Health Across the Nation.

Environ Int 2021 Jul 23;157:106781. Epub 2021 Jul 23.

Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, United States; Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, United States. Electronic address:

Background: Exposure to metals and metal mixtures may influence ovarian aging. However, epidemiologic evidence of their potential impact is lacking.

Objective: We prospectively examined the associations of 15 urinary metal concentrations and their mixtures with natural menopause in the Study of Women's Health Across the Nation Multi-Pollutant Study. Read More

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The influence of salinity on sodium lauryl sulfate toxicity in Mytilus galloprovincialis.

Environ Toxicol Pharmacol 2021 Jul 23:103715. Epub 2021 Jul 23.

Department of Chemical, Biological, Pharmaceutical and Environmental Sciences University of Messina, Italy. Electronic address:

The influence of salinity on the effects of sodium lauryl sulfate (SLS) was evaluated using the Mediterranean mussel Mytilus galloprovincialis, exposed for 28 days to SLS (0.0 mg/L - control and 4.0 mg/L) under three salinity levels (Control-30, 25 and 35). Read More

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Microstructural Heterogeneity of the Collagenous Network in the Loaded and Unloaded Periodontal Ligament and its Biomechanical Implications.

J Struct Biol 2021 Jul 23:107772. Epub 2021 Jul 23.

School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, Australia. Electronic address:

The periodontal ligament (PDL) is a highly heterogeneous fibrous connective tissue and plays a critical role in distributing occlusal forces and regulating tissue remodeling. Its mechanical properties are largely determined by the extracellular matrix, comprising a collagenous fiber network interacting with the capillary system as well as interstitial fluid containing proteoglycans. While the phase-contrast micro-CT technique has portrayed the 3D microscopic heterogeneity of PDL, the topological parameters of its network, which is crucial to understanding the multiscale constitutive behavior of this tissue, has not been characterized quantitatively. Read More

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Factors related to psychological well-being amongst patients with type 2 diabetes.

Diabetes Res Clin Pract 2021 Jul 23:108982. Epub 2021 Jul 23.

Assistant Professor in nutrition , Research Center for Traditional Medicine and History of Medicine, Shiraz University of Medical Sciences, shiraz, Iran. Electronic address:

Introduction: The effect of diabetes on psychological well-being (PWB) is a concern for the development of medical care in diabetes management. There are few studies have simultaneously evaluated the impacts of related factors in PWB among patients with type 2 diabetes.

Method: This cross-sectional study was conducted on 183 male and 317 female patients with diabetes who had been registered in healthcare centers in Behbahan from November 2018 until April 2019. Read More

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Construction of Z-scheme CuFeO/MnO photocatalyst and activating peroxymonosulfate for phenol degradation: Synergistic effect, degradation pathways, and mechanism.

Environ Res 2021 Jul 23:111736. Epub 2021 Jul 23.

School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, 610500, China.

Photocatalysis coupled with sulfate radical-based advanced oxidation process (SR-AOPs) is an efficient strategy to enhance the degradation efficiency of organic pollution. Herein, a Z-scheme CuFeO/MnO composite catalyst was successfully fabricated by the hydrothermal method. A series of characterizations demonstrated that the higher CuFeO particle dispersion and larger BET surface area of CuFeO/MnO catalyst contributed to a high catalytic activity toward the phenol removal compared with pure CuFeO. Read More

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Wastewater monitoring as a supplementary surveillance tool for capturing SARS-COV-2 community spread. A case study in two Greek municipalities.

Environ Res 2021 Jul 23:111749. Epub 2021 Jul 23.

Laboratory of Hygiene and Epidemiology, Faculty of Medicine, University of Thessaly, 22 Papakyriazi str, Larissa, Greece. Electronic address:

A pilot study was conducted from late October 2020 until mid-April 2021, aiming to examine the association between SARS-CoV-2 RNA concentrations in untreated wastewater and recorded COVID-19 cases in two Greek municipalities. A population of Random Forest and Linear Regression Machine learning models was trained and evaluated incorporating the concentrations of SARS-CoV-2 RNA in 111 wastewater samples collected from the inlets of two Wastewater Treatment Plants, along with physicochemical parameters of the wastewater influent. The model's predictions were adequately associated with the 7-day cumulative cases with the correlation coefficients (after 5-fold cross validation) ranging from 0. Read More

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Matrix and agent-based modeling of threats to a diamond-backed terrapin population.

Math Biosci 2021 Jul 23:108672. Epub 2021 Jul 23.

Fitchburg State University, Department of Biology and Chemistry, United States of America. Electronic address:

Population models are important tools for evaluating human impacts and potential management approaches on declining species. However, often studies are limited by constraints of the specific modeling approach. In this study we considered the persistence of a diamond-backed terrapin (Malaclemys terrapin) population using two distinct modeling approaches. Read More

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Organic cultivation practices enhanced antioxidant activities and secondary metabolites in giant granadilla (Passiflora quadrangularis L.).

PLoS One 2021 26;16(7):e0255059. Epub 2021 Jul 26.

Department of Biology, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor Darul Ehsan, Malaysia.

Passiflora quadrangularis L. belongs to the family Passifloraceae which bears larger fruit with edible juicy mesocarp and pulp known as a good source of phytochemicals. Cultivation and plant management practices are known to influence the phytochemical compositions of agricultural produce. Read More

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Peripartum echocardiographic changes in women with hypertensive disorders of pregnancy.

Ultrasound Obstet Gynecol 2021 Jul 26. Epub 2021 Jul 26.

Molecular and Clinical Sciences Research Institute, St. George's University of London, London, UK.

Objectives: Women with hypertensive disorders of pregnancy (HDP) present with evidence of significant myocardial dysfunction on echocardiographic assessment at the time of diagnosis. Birth not only cures the syndrome of HDP, but is also associated with a reduction in cardiovascular (CV) volume and resistance load in the mother due to the delivery of the fetoplacental unit. The impact of this physiological change on maternal myocardial function in women with HDP has not been systematically evaluated. Read More

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Evaluation of the effect of unilateral late blindness on the retina, optic nerve and choroid parameters in the sighted eye.

Int Ophthalmol 2021 Jul 26. Epub 2021 Jul 26.

Department of Neurology, Alaaddin Keykubat University Alanya Education and Research Hospital, Antalya, Turkey.

Background: To investigate whether unilateral late blindness alters the peripapillary retinal nerve fiber layer (RNFL), ganglion cell complex (GCC), central macular thickness (CMT) and choroidal thickness (CT).

Methods: The 17 healthy eyes of 17 monocular patients with late blindness due to isolated eye trauma in one eye and the 19 eyes of 19 healthy individuals were evaluated in this retrospective study. Patients with at least 10 years of monocular blindness, a refractive error between + 1. Read More

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Influence of the Hollowness and Size Distribution on the Magnetic Properties of FeO Nanospheres.

Langmuir 2021 Jul 26. Epub 2021 Jul 26.

School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China.

In this study, FeO nanospheres with different levels of hollowness were successfully prepared by the solvent thermal method. The synthesized FeO nanospheres were characterized by transmission electron microscopy, X-ray diffraction, and vibrating sample magnetometry, and Image-Pro software was used to analyze the hollowness of the FeO nanospheres for the first time. It was found that excess reactants could lead to the disappearance of the hollow structure of the FeO nanospheres, and the reason for this phenomenon was discussed as due to entropy increase theory. Read More

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Repair potential of a bulk-fill resin composite: Effect of different surface-treatment protocols.

Eur J Oral Sci 2021 Jul 26. Epub 2021 Jul 26.

Restorative Dentistry Department, Faculty of Dentistry, Gazi University, Ankara, Turkey.

This study evaluated the effect of different surface-treatment protocols on the repair bond strength of a bulk-fill resin composite. One-hundred and forty specimens (Filtek Bulk-fill) were created (5 mm diameter, 4 mm depth) and allocated to one of 14 groups according to surface treatment (no treatment, tribochemical silica coating, sandblasting with aluminum oxide), adhesive application (no adhesive, total-etch, self-etch), and type of repair resin (bulk-fill, universal resin) (n = 10 per group). Twenty specimens were selected for measuring the cohesive strengths of non-aged resin composites and used as reference. Read More

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Urban citizen health risk assessment for epidemic pneumonia and research on innovation on economic development.

Chunning Zhou Y Xin

Work 2021 Jul 17. Epub 2021 Jul 17.

School of Innovation and Quality Development, Hankou University, Wuhan, China.

Background: Many people die of epidemic pneumonia, which poses a great threat to people's health and the economy.

Objective: This work aimed to ensure the health of the people and the steady development of the national economy.

Methods: According to the three elements of risk composition, the evaluation indexes of health risk were selected. Read More

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Effectiveness of direct-acting antiviral drugs against hepatitis C virus: predictive factors of response to the treatment.

Libyan J Med 2021 Dec;16(1):1949797

Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja, Granada, Spain.

Despite the high efficacy and safety of direct-acting antivirals against hepatitis C virus shown in clinical trials, treatment failures continue to occur. Our aim was to establish the effectiveness of these drugs in routine clinical practice, as well as to determine factors that could influence the response to the treatment. Single-center, observational, retrospective study. Read More

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December 2021

Influence of Homogenization in the Physicochemical Quality of Human Milk and Fat Retention in Gastric Tubes.

J Hum Lact 2021 Jul 26:8903344211031456. Epub 2021 Jul 26.

Departamento de Tecnologia de Alimentos, Universidade Federal de Viçosa (UFV), Viçosa, MG, Brasil.

Background: The retention of human milk nutrients in gastric tubes used to feed premature infants is a challenge to be overcome.

Research Aims: To evaluate (1) the performance of six homogenizers (mixing processor, piston valve, ultrasonic bath, ultraturrax, stirring mixer, and ultrasound probe) for the fat retention reduction in gastric tubes; (2) the influence of the best homogenization conditions on the fatty acid and protein profiles of human milk; and (3) the cost/benefit ratio for the inclusion of homogenization as a new step in human milk processing.

Methods: The influence of different levels and times of homogenization on reducing fat retention of human milk in probes was evaluated in this comparative prospective cross-sectional study. Read More

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Evaluating the Impact of Authentic Research on Secondary Student Self-efficacy and Future Scientific Possible Selves.

Int J Environ Sci Educ 2018 12;13(9):737-746. Epub 2018 Nov 12.

University of Montana, USA.

Background: As the need to involve more students in STEM learning and future careers becomes more pressing, identifying successful methods of engaging students in meaningful scientific learning that increases their interest in science is essential. Student self-efficacy (their confidence or belief in their ability to accomplish tasks) is closely tied to student interest in science, as is student future scientific possible selves.

Material And Methods: This manuscript presents the findings of a study that evaluated the Clean Air and Healthy Homes Program (CAHHP), which provides students the opportunity to design and implement authentic scientific research on indoor air quality issues. Read More

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November 2018

Religion, spirituality and diurnal rhythms of salivary cortisol and dehydroepiandrosterone in postmenopausal women.

Compr Psychoneuroendocrinol 2021 Aug 6;7. Epub 2021 Jun 6.

MGH/Harvard Center on Genomics, Vulnerable Populations, and Health Disparities, Mongan Institute, Massachusetts General Hospital, Boston, MA, USA.

Background: Religion and spirituality (R/S) are important resources for coping with stress and are hypothesized to influence health outcomes via modulation of the hypothalamic-pituitary-adrenal (HPA) axis, though this has not been evaluated extensively. In this study, we examined associations between several measures of religiosity or spirituality (R/S) and three HPA axis biomarkers: cortisol, dehydroepiandrosterone (DHEA), and cortisol: DHEA ratio.

Methods: Sample included 216 female postmenopausal Nurses' Health Study II participants who provided up to five timed saliva samples: immediately upon awakening, 45 min, 4 h, and 10 h after waking, and prior to going to sleep during a single day in 2013. Read More

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Family Connectedness and Its Association With Sexual Risk-Taking Among Undergraduate Students at the University of Nairobi.

East Afr Health Res J 2019 30;3(1):24-30. Epub 2019 Jul 30.

Department of Psychiatry, University of Nairobi, Nairobi, Kenya.

Background: Universities have a student population in the age range of 17 to 25 years, 75 % of whom are sexually active, with the median age of sexual debut at age 18 years. About half of all students are involved in risky sexual behaviour. Many interventions have decreased sexual risk behaviour in the short-term, but there is need for multilevel prevention, including targeting improvements in family relationships for sustained change. Read More

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Comparison of Minimally Invasive Inductively Coupled Plasma-Mass Spectrometry Approaches for Strontium Isotopic Analysis of Medieval Stained Glass with Elevated Rubidium and Rare-Earth Element Concentrations.

ACS Omega 2021 Jul 9;6(28):18110-18122. Epub 2021 Jul 9.

UR Art, Archéologie Patrimoine, Université de Liège, allée du six août 10, B-4000 Liège, Belgium.

Different approaches for the determination of the Sr/Sr isotope ratio of high-Rb glass are compared in this work to assess the suitability of minimally invasive approaches for applications on medieval stained glass (from the ancient Abbey of Stavelot in Belgium). It was found that pneumatic nebulization multicollector inductively coupled plasma-mass spectrometry (PN-MC-ICP-MS) after acid digestion and chromatographic isolation of the target analyte out of the sample matrix can still be seen as the preferred method for the high-precision isotopic analysis of Sr in glass with high Rb and rare-earth element (REE) concentrations. Alternatively, the use of laser ablation (LA) for sample introduction is a powerful technique for the direct analysis of solid samples. Read More

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A new approach to expert reviewer detection and product rating derivation from online experiential product reviews.

Heliyon 2021 Jul 29;7(7):e07409. Epub 2021 Jun 29.

Department of Computer Science & Engineering, University of Rashahi, Rajshahi, 6205, Bangladesh.

Consumer reviews have emerged as one of the most influential factors in a person's purchase behavior. The existing open-source approaches for detecting expert reviewers and determining product ratings suffer from limitations and are susceptible to manipulation. In this work, we addressed these limitations by developing two algorithms and evaluated them on three datasets from amazon. Read More

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Characterization of automatic treatment planning approaches in radiotherapy.

Phys Imaging Radiat Oncol 2021 Jul 13;19:60-65. Epub 2021 Jul 13.

Department of Radiation Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands.

Background And Purpose: Automatic approaches are widely implemented to automate dose optimization in radiotherapy treatment planning. This study systematically investigates how to configure automatic planning in order to create the best possible plans.

Materials And Methods: Automatic plans were generated using protocol based automatic iterative optimization. Read More

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Excessive waitlists and delays to treatment with low-dose-rate brachytherapy predict an increased risk of recurrence and metastases in intermediate-risk prostatic carcinoma.

Clin Transl Radiat Oncol 2021 Sep 1;30:38-42. Epub 2021 Jul 1.

Department of Oncology, University of Calgary, Calgary, AB, Canada.

Purpose: It has previously been shown that increased wait times for prostatectomy are associated with poorer outcomes in intermediate-risk prostatic carcinoma (PCa). However, the impact of wait times on PCa outcomes following low-dose-rate brachytherapy (LDR-BT) are unknown.

Methods And Materials: We retrospectively reviewed 466 intermediate-risk PCa patients that underwent LDR-BT at a single comprehensive cancer center between 2003 and 2016. Read More

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September 2021