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... To study the emission characteristics of typical construction machinery in Chengdu, 12 construction machinery (excavators, bulldozers, loaders, and forklifts) under idling mode, moving mode, and working mode, were tested using a portable emission measurement system (PEMS). Under three operating modes, the typical construction machinery in the working mode was higher in the fuel-based average emiss ...
... The environmental benefits of Electric Vehicles (EVs) vary greatly depending on the local power structure. A realistic question is, after the Chinese government completely abolished subsidies for EVs in 2022, whether consumers are willing to take over from the government and pay extra for the perceived green attributes of EVs? The scant literature barely provided valued information. We, explore wh ...
... The tree peony (Paeonia suffruticosa Andr.) is a deciduous woody perennial endemic to Central Plains, Northwest, and Southern Yangtse, China, and is loved by the general public, horticulturists and gardeners all over the world. Tree peonies cultivars are usually propagated vegetatively by grafting and division; however, these methods are inefficient for mass-propagation. Two stem wounding methods ...
China, etc ; basins; calcium oxide; catenas; provenance; Show all 5 Subjects
Abstract:
... Northern China has 12 main deserts that range from extremely arid regions in the west to semi-arid or semi-humid regions in the east. Based on their geographical locations, we divided these deserts into western, central, and eastern deserts. We investigated the geochemical elements in their surface sediments and found that the concentration of the major element SiO₂ gradually increased from west t ...
China, etc ; air; condensates; models; risk; transportation; Show all 6 Subjects
Abstract:
... Chlorinated paraffins (CPs) are typical semi-volatile chemicals (SVOCs) that have been used in copious quantities in indoor material additives. SVOCs distribute dynamically between the gas phase and various condensate phases, especially organic films. Investigating the dynamic behaviors of existing CPs in indoor environments is necessary for understanding their potential risk to humans from indoor ...
China, etc ; durability; hybridization; photocatalysis; photocatalysts; triazines; Show all 6 Subjects
Abstract:
... Herein, a novel direct Z-scheme photocatalyst was accomplished by hybridization of 0D MoS₂ quantum dots (MSQDs) and 3D honeycomb-like conjugated triazine polymers (CTP) (namely, CTP-MSQD). The unique 0D/3D hierarchical structure significantly enhanced the exposure of active sites and light harvesting property, while the formed p-n junction enabled the direct strong interface coupling without the n ...
China, etc ; agrochemicals; manganese; nanospheres; nanowires; sustainable agriculture; Show all 6 Subjects
Abstract:
... Nanostructured manganese oxides (nano-MnOₓ) have shown great promises as versatile agrochemicals in nano-enabled sustainable agriculture, owing to the coupled benefits of controlled release of dissolved Mn²⁺, an essential nutrient needed by plants, and oxidative destruction of environmental organic pollutants. Here, we show that three δ-MnO₂ nanomaterials consisting of nanosheet-assembled flower-l ...
China, etc ; energy transfer; models; transportation; Yangtze River; Show all 5 Subjects
Abstract:
... The Yangtze River Economic Belt (YREB) is one of the most energy-consuming regions in China, accounting for 36% of the nation's total energy consumption in 2019. The fundamental purpose of productive activities in production sectors is to meet the increasing consumption demand of the household sector. The household sector plays an important role in promoting energy consumption. Taking the househol ...
China, etc ; automobiles; catalytic activity; oxidation; thermal stability; Show all 5 Subjects
Abstract:
... The interactions between metals and oxide supports, so-called metal-support interactions (MSI), are of great importance in heterogeneous catalysis. Pd-based automotive exhaust control catalysts, especially Pd-based three-way catalysts (TWCs), have received considerable research attention owing to its prominent oxidation activity of HCs/CO, as well as excellent thermal stability. For Pd-based TWCs, ...
China; South China Sea, etc ; chronic exposure; dolphins; homeostasis; lipid metabolism; lipids; liver; metabolites; peroxisome proliferator-activated receptor alpha; phthalates; pollution; wildlife; Show all 13 Subjects
Abstract:
... Phthalate esters (PAEs) are ubiquitous environmental contaminants, arising growing public concern. Nevertheless, information on the exposure and risks of PAEs in wildlife remains limited. Here, we conducted the first investigation of the occurrences, spatiotemporal trends, and potential risks of twelve metabolites of PAEs (mPAEs) in 74 humpback dolphins from the northern South China Sea during 200 ...
China, etc ; antibiotics; clay; electron transfer; oxidation; remediation; sulfamethoxazole; Show all 7 Subjects
Abstract:
... It has been documented that organic contaminants can be degraded by hydroxyl radicals (•OH) produced by the activation of H₂O₂ by Fe(II)-bearing clay. However, the interfacial electron transfer reactions between structural Fe(II) and H₂O₂ for •OH generation and its effects on contaminant remediation are unclear. In this study, we first investigated the relation between •OH generation sites and sul ...
China, etc ; case studies; green infrastructure; models; risk; watersheds; Show all 6 Subjects
Abstract:
... Urban green space (UGS) contributes significantly to urban settlements with respect to frequent rainstorm events and population agglomeration issues, but there is limited understanding of the spatial match between green space supply and social demand. This study established an integrated evaluation framework relating to the supply–demand balance of UGS. In a case study of Beijing, the urban waterl ...
China, etc ; aerosols; air pollution; case studies; dust; rain; Show all 6 Subjects
Abstract:
... Fugitive road dust (FRD) contributes a great deal to urban rainwater and air pollution and is commonly controlled by water-sprinkling in most Chinese cities. However, there is a lack of information on its effectiveness. We used the Testing Re-entrained Aerosol Kinetic Emissions from Roads (TRAKER) method to monitor different types of roads in Baoding city before and within 1 hr after water-sprinkl ...
China, etc ; air quality; ozone; pollution; summer; titration; topography; Show all 7 Subjects
Abstract:
... Beijing faces the challenge of high levels of ozone (O₃) pollution. In this study, the Weather Research and Forecasting model and Community Multiscale Air Quality model (CMAQ) were used to simulate atmospheric O₃ concentrations in Beijing. To investigate the formation mechanisms and source contributions of O₃ pollution in different regions of Beijing, process analysis and the integrated source app ...
China, etc ; aerosols; environment; land use; model validation; models; Show all 6 Subjects
Abstract:
... Including data of different time intervals during model development influences the predicting accuracy of PM₂.₅ but has not been widely discussed. Therefore, we included modeling data with multiple time windows to identify optimized modeling time windows for capturing the long-term variation of PM₂.₅ in China during 2005–2019. In general, we incorporated PM₂.₅ measurements, aerosol optical depth ( ...
China, etc ; energy efficiency; heat pumps; models; quantitative analysis; Show all 5 Subjects
Abstract:
... The application of ground source heat pump (GSHP) system for green buildings is an effective way to improve the energy efficiency of buildings and reduce energy demand. At present, the GSHP system for green buildings has the problem of improper operation management and unideal operation effect. To comprehensively analyze the actual operation of system and promote the healthy development of GSHP sy ...
China, etc ; Acacia; Sophora davidii; food chemistry; honey; melissopalynology; pollen; Show all 7 Subjects
Abstract:
... A HPLC-MS/MS method for simultaneous determination of four matrine-type alkaloids (matrine, oxymatrine, sophocarpine and sophoridine) in honey was established and was applied to 567 Chinese honey samples. The overall detection rate was 61.0 % and all eight Sophora viciifolia Hance honey samples were detected with the average content of 1183.3 μg/kg. Among 383 Acacia honey samples, matrine-type alk ...
China, etc ; COVID-19 infection; air pollution; air quality; ozone; Show all 5 Subjects
Abstract:
... Recently, air pollution especially fine particulate matters (PM₂.₅) and ozone (O₃) has become a severe issue in China. In this study, we first characterized the temporal trends of PM₂.₅ and O₃ for Beijing, Guangzhou, Shanghai, and Wuhan respectively during 2018-2020. The annual mean PM₂.₅ has decreased by 7.82%-33.92%, while O₃ concentration showed insignificant variations by -6.77%-4.65% during 2 ...
China, etc ; arsenites; cost effectiveness; ferrihydrite; hydrolysis; pH; temperature; wastewater; Show all 8 Subjects
Abstract:
... An advanced cost-saving method of removal of high-As(III) from SO₄(-II)-rich metallurgical wastewater has been developed by diluting the SO₄(-II) content with As(III)-Cl(-I)-rich metallurgical wastewater and then by the direct precipitation of As(III) with Fe(III) at pH 2.3. As(III) removal at various SO₄(-II)/Cl(-I) molar ratios and temperatures was investigated. The results showed that 65.2‒98.2 ...
China, etc ; Bacillus (bacteria); arsenic; genes; groundwater; oxidoreductases; prokaryotic cells; Show all 7 Subjects
Abstract:
... Many investigations suggest that dissimilatory arsenate-respiring prokaryotes (DARPs) play a key role in stimulating reductive mobilization of As from solid phase into groundwater, but it is not clear how environmental Mn(II) affects the DARPs-mediated reductive mobilization of arsenic. To resolve this issue, we collected soil samples from a realgar tailings-affected area. We found that there were ...