Publications by authors named "Luping Qu"

Introduction: There are ongoing concerns about opioid prescribing for surgical and non-surgical dental needs among adolescent/young adult and adult patients. Although there are known differences in the overall opioid prescription rates in rural areas compared to urban areas, the contribution of dental opioid prescriptions is still unclear. This study aims to examine the factors associated with receiving an opioid prescription following a dental visit.

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Objective: To identify the optimal parameters of gross movement interventions to yield the strongest effects on physical fitness among children aged 3-10 years and to provide a reference for the development of gross movement interventions to improve the physical fitness of children.

Background: There has been a global decline in children's physical fitness. Previous studies have shown that gross movement interventions can improve children's physical fitness, but the optimal intervention parameters for achieving the strongest effects have yet to be determined.

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  • Global grasslands are being converted to cropland, impacting ecological processes like water cycles, but the long-term effects on evapotranspiration (ET) are not fully understood.
  • A four-year study showed that ET was significantly higher in reclaimed cropland (248 mm) compared to grassland (166 mm) during the growing season, while grassland ET slightly exceeded cropland ET in the non-growing season.
  • Findings suggest that irrigation, changes in vegetation, and tillage practices influence ET, with potato cultivation benefiting the water balance similar to grasslands, underscoring the need to study these variations in depth.
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Climate change is causing more frequent and intense heatwaves. Therefore, it is important to understand how heatwaves affect the terrestrial carbon cycle, especially in grasslands, which are especially susceptible to climate extremes. This study assessed the impact of naturally occurring, simultaneous short-term heatwaves on CO fluxes in three ecosystems on the Mongolia Plateau: meadow steppe (MDW), typical steppe (TPL), and shrub-grassland (SHB).

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CuInTe (CIT) is one of the typical ternary chalcogenides known for its characteristic mixed polyanionic/polycationic site defects, making it a subject of continuous interest in the field of thermoelectrics. In this work, we propose a chemical composition modulation strategy for CIT by alloying GeTe and then introducing a copper deficiency (denoted by V). This strategy aims to unpin its Fermi level () and shift into the valence band (VB) while simultaneously enabling coupling between the optical and acoustic phonon, thereby providing an extra phonon scattering path at low frequencies.

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The limited mechanical performance and responsiveness of protein-based smart packaging materials have hindered their development. To address these issues, this study prepared a pH-responsive smart film by introducing dialdehyde carboxylated cellulose nanofibers (DCCNFs) as the cross-linking agent capable of covalently reacting with proteins, and bilberry extract (BE) as a pH-responsive indicator into pea protein isolate (PPI) matrix. The results demonstrated that adding DCCNF and BE enhanced the PPI film's thermal stability, density, and UV barrier properties.

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Extreme heatwaves have become more frequent and severe in recent decades, and are expected to significantly influence carbon fluxes at regional scales across global terrestrial ecosystems. Nevertheless, accurate prediction of future heatwave impacts remains challenging due to a lack of a consistent comprehension of intrinsic and extrinsic mechanisms. We approached this knowledge gap by analyzing the complexity factors in heatwave studies, including the methodology for determining heatwave events, divergent responses of individual ecosystem components at multiple ecological and temporal scales, and vegetation status and hydrothermal environment, among other factors.

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  • The study analyzes how seasonal precipitation affects carbon fluxes in ecosystems, focusing on the differences between extreme precipitation events and average precipitation.
  • Researchers conducted field measurements in Mongolia between 2015 and 2021, examining carbon and water relationships during various precipitation conditions.
  • Findings indicate that wet seasons boosted ecosystem respiration and gross primary production, while dry conditions had the opposite effect, emphasizing the significant role of extreme precipitation in carbon cycling.
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CuSnSe (CTS) ternary chalcogenides have potential applications in thermoelectrics for they crystallize in a high-symmetry cubic structure and consist of earth-abundant and eco-friendly elements. However, the pristine CTS does not have optimal thermoelectric (TE) performance (ZT = 0.35 at ∼700 K), so further investigation is required in this regard.

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  • Heat waves (HW) are predicted to become more frequent and intense due to human activities, impacting ecosystem carbon fluxes, particularly in sensitive areas like semi-arid Eurasian grasslands.
  • A 3-year field experiment found that while HWs significantly decreased net ecosystem CO₂ exchange and gross ecosystem production, moderate mowing helped mitigate these effects, enhancing carbon fluxes and biodiversity.
  • Mowing reduced the negative impact of HWs by about 15%, and maintaining higher soil water content emerged as another effective strategy for reducing HW impacts on carbon cycling in grasslands.
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The imbalance of terrestrial carbon (C) inputs versus losses to extreme precipitation can have consequences for ecosystem carbon balances. However, the current understanding of how ecosystem processes will respond to predicted extreme dry and wet years is limited. The current study was conducted for three years field experiment to examine the effects of environmental variables and soil microbes on soil respiration (Rs), autotrophic respiration (Ra) and heterotrophic respiration (Rh) under extreme wet and dry conditions in mowed and unmowed grassland of Inner Mongolia.

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Heat waves (HWs) are a type of extreme weather event that is of growing concern in the scientific community. Yet field data based on sound experiment on the variation of ecosystem CO levels under HWs remain rare. Additionally, ecosystems react to HWs and the coupled human activities (such as grazing in grasslands) are unknown.

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Background: As a consequence of global change, intensity and frequency of extreme events such as heat waves (HW) have been increasing worldwide.

Methods: By using a combination of continuous 60-year meteorological and 6-year tower-based carbon dioxide (CO2) flux measurements, we constructed a clear picture of a HWs effect on the dynamics of carbon, water, and vegetation on the Eurasian Songnen meadow steppe.

Results: The number of HWs in the Songnen meadow steppe began increasing since the 1980s and the rate of occurrence has advanced since the 2010s to higher than ever before.

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Strong seed dormancy has been an obstacle for field production of Echinacea species. Previous research on overcoming Echinacea seed dormancy has been extensive and focused on treatment methods, which involve time and expense, and are incompatible with organic production if synthetic chemicals are used. We have attempted to genetically reduce seed dormancy through selection and breeding in Echinacea, by using E.

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Prunella vulgaris (Lamiaceae), commonly known as selfheal, is a perennial herb with a long history of use in traditional medicine. Recent studies have found that P. vulgaris possesses anti-inflammatory, antiviral, and antibacterial properties, and it is likely that this will lead to increased commercial demand for this species.

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Background: The mint family (Lamiaceae) produces a wide variety of constituents with medicinal properties. Several family members have been reported to have antiviral activity, including lemon balm (Melissa officinalis L.), sage (Salvia spp.

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Hexaploid seeds are produced by predominantly tetraploid populations of Hypericum perforatum, but the fate of hexaploid seedlings and their reproductive behavior have not been closely examined. We used flow cytometry to analyze single seeds and individual plant samples of three accessions of H. perforatum to determine ploidy levels and reproductive pathways.

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Seeds from five lots each of Echinacea angustifolia DC, and E. pallida (Nutt.) Nutt.

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We investigated patterns of variation in alkamides and cichoric acid accumulation in the roots and aboveground parts of Echinacea purpurea (L.) Moench. These phytochemicals were extracted from fresh plant parts with 60% ethanol and quantified by high performance liquid chromatography (HPLC) analysis.

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Chromosome karyotypes of the most commonly cultivated and medicinally used Echinacea taxa, E. angustifolia DC. var.

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Seed germination patterns were studied in E. purpurea (L.) Moench grouped by seed source, one group of seven lots from commercially cultivated populations and a second group of nine lots regenerated from ex situ conserved wild populations.

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Chemical investigation of the roots of Echinacea angustifolia, E. purpurea, and E. pallida yielded two new alkamides, identified by analysis of spectroscopic data and comparison with reported alkamides.

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