keyword
https://read.qxmd.com/read/38535898/sustainable-development-of-zno-nanostructure-doping-with-water-hyacinth-derived-activated-carbon-for-visible-light-photocatalysis
#1
JOURNAL ARTICLE
Sucheewan Krobthong, Tipawan Rungsawang, Naphatson Khaodara, Napat Kaewtrakulchai, Kanit Manatura, Khewika Sukiam, Donchida Wathinputthiporn, Sawitree Wongrerkdee, Chatdanai Boonruang, Sutthipoj Wongrerkdee
Water hyacinth (Wh) is an aquatic weed considered a nuisance in agricultural and fishing activities. Therefore, this study proposed repurposing this plant into activated carbon (AC). First, the ZnO-AC was precipitated and applied as a photocatalyst for degrading methylene blue. The preliminary photocatalytic test under UV irradiation identified the optimum ZnO-AC photocatalyst to degrade methylene blue (MB). The ZnO-AC photocatalyst recorded the highest degradation rate constant of 11.49 × 10-3 min-1 , which was almost two-fold higher than that of ZnO (5...
February 21, 2024: Toxics
https://read.qxmd.com/read/38535691/fabrication-of-pre-structured-substrates-and-growth-of-cigs-micro-absorbers
#2
JOURNAL ARTICLE
Marina Alves, Pedro Anacleto, Vasco Teixeira, Joaquim Carneiro, Sascha Sadewasser
Second-generation thin-film Cu(In, Ga)Se2 (CIGS) solar cells are a well-established photovoltaic technology with a record power conversion efficiency of 23.6%. However, their reliance on critical raw materials, such as In and Ga, requires new approaches to reduce the amount of critical raw materials employed. The micro-concentrator concept involves the combination of thin-film photovoltaic technology with concentrator photovoltaic technology. This approach reduces the size of the solar cell to the micrometer range and uses optical concentration to collect sunlight from a larger area, focusing it onto micro solar cells...
March 20, 2024: Nanomaterials
https://read.qxmd.com/read/38534347/vitamin-d-in-cutaneous-t-cell-lymphoma
#3
REVIEW
August-Witte Feentved Ødum, Carsten Geisler
Cutaneous T-cell lymphoma (CTCL) is characterized by the proliferation of malignant T cells in inflamed skin lesions. Mycosis fungoides (MF)-the most common variant of CTCL-often presents with skin lesions around the abdomen and buttocks ("bathing suit" distribution), i.e., in skin areas devoid of sun-induced vitamin D. For decades, sunlight and vitamin D have been connected to CTCL. Thus, vitamin D induces apoptosis and inhibits the expression of cytokines in malignant T cells. Furthermore, CTCL patients often display vitamin D deficiency, whereas phototherapy induces vitamin D and has beneficial effects in CTCL, suggesting that light and vitamin D have beneficial/protective effects in CTCL...
March 13, 2024: Cells
https://read.qxmd.com/read/38533362/comparison-of-the-efficacy-of-hydroquinone-cream-versus-hydroquinone-cream-plus-danggui-shaoyao-powder-in-the-treatment-of-melasma
#4
JOURNAL ARTICLE
Yuan-Yuan Cheng, Rui-Rui Peng, Hao Luo, Wei Zhao
INTRODUCTION: Melasma is an acquired hypermelanosis and occurs in areas exposed to sunlight. AIM: To investigate the effectiveness of Danggui Shaoyao powder (DSP) as a complementary drug in the treatment of melasma. MATERIAL AND METHODS: A total of 40 melasma patients over the age of 18 who met the inclusion criteria entered the study randomly in two DSP + Hydroquinone (DSP + H) and Hydroquinone (H) groups. RESULTS: At the beginning of the study, the average MASI score of the two groups of patients had no statistical difference (DSP + H: 15...
February 2024: Postȩpy Dermatologii i Alergologii
https://read.qxmd.com/read/38532637/photocatalysis-meets-piezoelectricity-in-a-type-i-oxygen-vacancy-rich-batio-3-biobr-heterojunction-mechanism-insights-from-characterizations-to-dft-calculations
#5
JOURNAL ARTICLE
Yan Xu, Huan-Yan Xu, Lian-Wei Shan, Yue Liu, Mao-Chang Cao, Li-Guo Jin, Li-Min Dong
It is a challenging task to design a piezoelectric photocatalyst with excellent performance under mechanical agitation instead of ultrasonic irradiation. Integrating vacancy defects into a heterojunction seems to be an effective strategy for synergistically increasing its piezo-photocatalytic performance. For this goal, a two-step hydrothermal method was adopted to architect a type-I oxygen-vacancy-rich BaTiO3 /BiOBr heterojunction to surge the degradation of Rhodamine B (RhB) under the combined action of simulated sunlight irradiation and mechanical agitation...
March 26, 2024: Inorganic Chemistry
https://read.qxmd.com/read/38531896/accounting-for-albedo-change-to-identify-climate-positive-tree-cover-restoration
#6
JOURNAL ARTICLE
Natalia Hasler, Christopher A Williams, Vanessa Carrasco Denney, Peter W Ellis, Surendra Shrestha, Drew E Terasaki Hart, Nicholas H Wolff, Samantha Yeo, Thomas W Crowther, Leland K Werden, Susan C Cook-Patton
Restoring tree cover changes albedo, which is the fraction of sunlight reflected from the Earth's surface. In most locations, these changes in albedo offset or even negate the carbon removal benefits with the latter leading to global warming. Previous efforts to quantify the global climate mitigation benefit of restoring tree cover have not accounted robustly for albedo given a lack of spatially explicit data. Here we produce maps that show that carbon-only estimates may be up to 81% too high. While dryland and boreal settings have especially severe albedo offsets, it is possible to find places that provide net-positive climate mitigation benefits in all biomes...
March 26, 2024: Nature Communications
https://read.qxmd.com/read/38526532/influence-of-environmental-factors-and-genome-diversity-on-cumulative-covid-19-cases-in-the-highland-region-of-china-comparative-correlational-study
#7
JOURNAL ARTICLE
Zhuoga Deji, Yuantao Tong, Honglian Huang, Zeyu Zhang, Meng Fang, M James C Crabbe, Xiaoyan Zhang, Ying Wang
BACKGROUND: The novel coronavirus SARS-CoV-2 caused the global COVID-19 pandemic. Emerging reports support lower mortality and reduced case numbers in highland areas; however, comparative studies on the cumulative impact of environmental factors and viral genetic diversity on COVID-19 infection rates have not been performed to date. OBJECTIVE: The aims of this study were to determine the difference in COVID-19 infection rates between high and low altitudes, and to explore whether the difference in the pandemic trend in the high-altitude region of China compared to that of the lowlands is influenced by environmental factors, population density, and biological mechanisms...
March 25, 2024: Interactive Journal of Medical Research
https://read.qxmd.com/read/38526437/the-mechanism-and-kinetics-of-the-atmospheric-oxidation-of-cf-3-cf-2-2-ch%C3%AE-ch-2-hfc-1447fz-by-hydroxyl-radicals-ab-initio-investigation
#8
JOURNAL ARTICLE
Youqing Yu, Li Pan, Qiyao Sun, Jie Wang
The oxidation of 3,3,4,4,5,5,5-heptafluoro-1-pentene (HFC-1447fz) by hydroxyl radicals plays a crucial role in atmospheric conditions. By employing the CCSD(T)/cc-pVTZ//M06-2X/6-311++G(d,p) level of theory, the detailed reaction mechanism, kinetics and atmospheric implications of the degradation of HFC-1447fz by hydroxyl radicals were investigated. Compared to H-abstraction channels, the OH addition reaction is determined to be more favorable initial pathways in the degradation processes of HFC-1447fz. The overall rate coefficient of the degradation of HFC-1447fz by OH radicals is estimated to be 1...
March 25, 2024: Physical Chemistry Chemical Physics: PCCP
https://read.qxmd.com/read/38525268/awareness-and-knowledge-of-sun-exposure-and-use-of-sunscreen-among-adults-in-aseer-region-saudi-arabia
#9
JOURNAL ARTICLE
Emad Bahashwan
BACKGROUND: Excessive sun exposure and inadequate sunscreen use can lead to skin cancer and other harmful effects on the skin, eyes, and immune system. PURPOSE: This observational cross-sectional study aimed to assess awareness and knowledge of sun exposure and sunscreen use among adults in the Aseer region, Saudi Arabia. This study also focused on evaluating the risks of skin cancer and participants' sun-protective attitudes and practices. METHODS: A population-based cross-sectional study was conducted among adults in the Aseer region, Saudi Arabia...
May 2024: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://read.qxmd.com/read/38524830/circulating-total-25-oh-d-and-calculated-free-25-oh-d-in-professional-academy-footballers-at-a-northerly-latitude-in-the-uk
#10
JOURNAL ARTICLE
Simon D Bowles, Subhashis Basu, Mayur K Ranchordas, Trevor Simper, Anthony Lynn
There is limited data on the vitamin D status of UK-based professional academy footballers. Therefore, the objective of this study was to report total 25(OH)D, free 25(OH)D and free 1, 25(OH)2 D at the end of the winter (March) and summer periods (October) in a cohort (n = 27) of professional academy footballers in northern England. Blood samples were collected to measure total 25(OH)D, parathyroid hormone, vitamin D binding protein, albumin and calcium. Free 25(OH)D and 1, 25(OH)2 D were calculated. Dietary vitamin D intake and retrospective summer sunlight exposure were also collected...
March 2024: Biology of Sport
https://read.qxmd.com/read/38524737/mitigating-illumination-leaf-and-view-angle-dependencies-in-hyperspectral-imaging-using-polarimetry
#11
JOURNAL ARTICLE
Daniel Krafft, Clifton G Scarboro, William Hsieh, Colleen Doherty, Peter Balint-Kurti, Michael Kudenov
Automation of plant phenotyping using data from high-dimensional imaging sensors is on the forefront of agricultural research for its potential to improve seasonal yield by monitoring crop health and accelerating breeding programs. A common challenge when capturing images in the field relates to the spectral reflection of sunlight (glare) from crop leaves that, at certain solar incidences and sensor viewing angles, presents unwanted signals. The research presented here involves the convergence of 2 parallel projects to develop a facile algorithm that can use polarization data to decouple light reflected from the surface of the leaves and light scattered from the leaf's tissue...
2024: Plant phenomics: a science partner journal
https://read.qxmd.com/read/38524405/a-nickel-based-semiconductor-hybrid-material-with-significant-dielectric-constant-for-electronic-capacitors
#12
JOURNAL ARTICLE
Dhouha Abid, Issam Mjejri, Abderrazek Oueslati, Philippe Guionneau, Stanislav Pechev, Nathalie Daro, Zakaria Elaoud
A novel semiconducting Ni(II)-based hybrid material with the formula (C7 H12 N2 ) NiCl4 , which exhibits interesting optical and electrical properties, is reported. The crystal structure was investigated using SCXRD, whereas physical properties were studied by means of thermal analysis, Ft-Infrared, optical, and electrical measurements. Its crystal packing is formed through organic rings surrounded by inorganic [NiCl4 ]2- tetrahedral and stacked along the a -crystallographic axis. This arrangement is stabilized by a dense network of intermolecular hydrogen bonds...
March 19, 2024: ACS Omega
https://read.qxmd.com/read/38523751/structured-excitation-energy-transfer-tracking-exciton-diffusion-below-sunlight-intensity
#13
JOURNAL ARTICLE
Guillermo D Brinatti Vazquez, Giulia Lo Gerfo Morganti, Cvetelin Vasilev, C Neil Hunter, Niek F van Hulst
With the increasing demand for new materials for light-harvesting applications, spatiotemporal microscopy techniques are receiving increasing attention as they allow direct observation of the nanoscale diffusion of excitons. However, the use of pulsed and tightly focused laser beams generates light intensities far above those expected under sunlight illumination, leading to photodamage and nonlinear effects that seriously limit the accuracy and applicability of these techniques, especially in biological or atomically thin materials...
March 20, 2024: ACS Photonics
https://read.qxmd.com/read/38523216/simulated-sunlight-periodate-triggered-formation-of-toxic-halogenated-bisphenols-in-highly-saline-water
#14
JOURNAL ARTICLE
Yuwei Xie, Kaiting Zhang, Zhen Shen, Mingbao Feng, Chong Wang
Periodate (PI)-based oxidation using the activators, such as metal ions and light irradiation, has emerged as a feasible treatment strategy for the effective remediation of contaminated water and wastewater. Given the pervasive nature of PI residues and solar exposure during application, the role of solar light in remediating the challenging highly saline water matrices needs to be elucidated. In this study, bisphenol A (BPA) was selected as the targeted micropollutant, which can be efficiently eliminated by the simulated sunlight (SSL)/PI system in the presence of high-level Cl- (up to 846...
March 25, 2024: Environmental Science and Pollution Research International
https://read.qxmd.com/read/38523070/completely-non-fused-low-cost-acceptor-enables-organic-photovoltaic-cells-with-17-efficiency
#15
JOURNAL ARTICLE
Ni Yang, Yong Cui, Yang Xiao, Zhihao Chen, Tao Zhang, Yue Yu, Junzhen Ren, Wenxuan Wang, Lijiao Ma, Jianhui Hou
To meet the industrial requirements of organic photovoltaic (OPV) cells, it is imperative to accelerate the development of cost-effective materials. Thiophene-benzene-thiophene central unit-based acceptors possess the advantage of low synthetic cost, while their power conversion efficiency (PCE) is relatively low. Here, by incorporating a para-substituted benzene unit and 1st-position branched alkoxy chains with large steric hindrance, a completely non-fused NFA, TBT-26, was designed and synthesized. The narrow bandgap of 1...
March 24, 2024: Angewandte Chemie
https://read.qxmd.com/read/38522602/occurrence-of-n-nitrosamines-in-the-atmosphere-and-human-health-risk-a-case-study-in-an-urban-area-of-chuncheon-gangwon-state-south-korea
#16
JOURNAL ARTICLE
Thu Thi Hoai Mai, Hekap Kim
This study aimed to investigate the occurrence of eight nitrosamines (NAs) in particulate (PM2.5 ) and gaseous phases and assess the human health risk associated with these compounds in an urban area of Chuncheon, Gangwon State, South Korea, across four sampling seasons. The findings revealed that the total concentrations of eight NAs measured during the sampling period exceeded the public health recommendation of 0.3 ng/m3 provided by the Norwegian Institute of Public Health, indicating a potential human health risk from NA exposures...
March 22, 2024: Environmental Pollution
https://read.qxmd.com/read/38522205/photochemical-transformation-and-immobilization-of-thallium-in-the-presence-of-iron-and-arsenic-mechanistic-insights-from-the-coupled-formation-of-arsenate-complexes
#17
JOURNAL ARTICLE
Chengxue Ma, Hongye Li, Xiaoliu Huangfu, Ruixing Huang, Jun Ma
Despite the occurrence of thallium (Tl) in the acidic mining-affected areas being highly positively correlated with iron (Fe) and arsenic (As), the effects of the two accompanying elements on Tl redox transformation and immobilization remain largely unknown. Here, we investigated the photochemical redox kinetics and immobilization efficiency of Tl for a wide range of As/Fe and As/Tl ratios under acidic conditions. We provided the first experimental confirmation of the complexation of Tl(III) with As(V) by the spectrophotometric method and revealed the role of Tl(III)-As(V) complexes in decreasing the photoreduction rate of Tl(III) under sunlight...
March 19, 2024: Journal of Hazardous Materials
https://read.qxmd.com/read/38521830/induced-dipole-moments-in-amorphous-zncds-catalysts-facilitate-photocatalytic-h-2-evolution
#18
JOURNAL ARTICLE
Xin Wang, Boyan Liu, Siqing Ma, Yingjuan Zhang, Lianzhou Wang, Gangqiang Zhu, Wei Huang, Songcan Wang
Amorphous semiconductors without perfect crystalline lattice structures are usually considered to be unfavorable for photocatalysis due to the presence of enriched trap states and defects. Here we demonstrate that breaking long-range atomic order in an amorphous ZnCdS photocatalyst can induce dipole moments and generate strong electric fields within the particles which facilitates charge separation and transfer. Loading 1 wt.% of low-cost Co-MoSx cocatalysts to the ZnCdS material increases the H2 evolution rate to 70...
March 23, 2024: Nature Communications
https://read.qxmd.com/read/38520251/nutrient-efficient-catfish-based-aquaponics-for-producing-lamb-s-lettuce-at-two-light-intensities
#19
JOURNAL ARTICLE
Fernando Sebastião, Daniela C Vaz, Cristiana L Pires, Pedro F Cruz, Maria João Moreno, Rui M M Brito, Luis Cotrim, Nelson Oliveira, Ana Costa, André Fonseca, Maria Rodrigues, Kirill Ispolnov, Raul Bernardino, Judite Vieira
BACKGROUND: Aquaponic systems are sustainable processes of managing water and nutrients for food production. An innovate nutrient-efficient catfish-based (Clarias gariepinus) aquaponics system was implemented for producing two cultivars of two leafy vegetables largely consumed worldwide: lamb's lettuce (Valerianella locusta var. Favor and Valerianella locusta var. de Hollande) and arugula (Eruca vesicaria var. sativa and Eruca sativa). Different growing treatments (4 × 2 factorial design) were applied to plants of each cultivar, grown at two light intensities (120 and 400 μmol...
March 23, 2024: Journal of the Science of Food and Agriculture
https://read.qxmd.com/read/38518913/phytosynthesis-of-zinc-oxide-nanoparticles-for-enhanced-antioxidant-antibacterial-and-photocatalytic-properties-a-greener-approach-to-environmental-sustainability
#20
JOURNAL ARTICLE
Jayaseelan C, Siva D, Kamaraj C, Thirugnanasambandam R, Ganesh Kumar V, Subashni B, Ashokkumar R, Saravanan D
Multifunctional nanoparticle (NP) production from phytochemicals is a sustainable process and an eco-friendly method, and this technique has a variety of uses. To accomplish this, we developed the medicinal plant Tinospora cordifolia (TC) leaf extract-assisted zinc oxide nanoparticles (ZnONPs). Instruments such as UV-Vis, XRD, FTIR, FE-SEM with EDX, and high-resolution TEM were applied to characterize the biosynthesized TC-ZnONPs. According to the UV-vis spectra, the phytogenicall y synthesized TC-ZnONPs absorb at a wavelength centered at 374 nm, which corresponds to a 3...
March 20, 2024: Environmental Research
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