Publications by authors named "Keyao Zhang"

Background: The use of near-infrared lasers for transcranial photobiomodulation (tPBM) offers a non-invasive method for influencing brain activity and is beneficial for various neurological conditions. However, comprehensive quantitative studies on its safety are lacking.

Objective: This study aims to investigate the safety of 1064-nm laser-based tPBM across brain structure, brain function, neural damage, cognitive ability and tolerance.

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Background/objectives: The genus Chang (Orthoptera: Eumastacoidea, 1937) is endemic to China, which is mainly distributed in low- and medium-altitude areas in central and eastern China. However, there are relatively few molecular data studies on the genus .

Methods: In this study, three species of the genus were collected from Hubei and Henan, China, namely sp.

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Objectives: To explore the impact of visceral obesity (VO) measured by preoperative abdominal computed tomography (CT) on postoperative infectious complications for colorectal cancer (CRC) patients and establish a predictive model.

Methods: Patients who underwent resection for colorectal cancer between January 2015 and January 2021 were enrolled in this study. All patients were measured for body mass index (BMI) and visceral fat area (VFA) preoperatively.

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Article Synopsis
  • There is currently no agreed-upon best sedation method for obese patients undergoing gastrointestinal endoscopy, prompting a study to compare opioid-free propofol and remimazolam balanced anesthesia.
  • The study involved 264 patients divided into two groups: one receiving remimazolam + esketamine and the other receiving propofol + esketamine, with hypoxemia incidence as the main outcome.
  • Results showed that while both groups had similar mild hypoxemia rates, the remimazolam group had significantly lower severe hypoxemia rates, longer time to loss of consciousness, but quicker recovery times compared to the propofol group.
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Cross-border impact assessment of cascade reservoir operation on hydrological regimes is a vital prerequisite for the sustainable development and management of transboundary waters. However, assessment based on traditional hydrological modeling for transboundary rivers is limited by the availability of meteorological and hydrological data. In this study, a combined data-driven model (CV-LSTM) was built to simulate natural runoff without dam construction in the Upper Mekong River.

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Phosphate solubilizing bacteria (PSBs) shows high potential to be used for lead passivation in sediments due to the abilities of releasing phosphate and the subsequent formation of insoluble Pb-phosphate compounds. In this research, microbial capsules implemented with sodium alginate and CaCl, containing Leclercia adecarboxylata L15 (a lead resistant PSB) and Ca(PO), were developed and the performance on lead passivation under different conditions was examined. The optimal concentrations of sodium alginate and CaCl for formulating the capsules were determined to be 0.

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Legacy phosphorus (P) in soil, accumulated over several years of fertilizer application in excess of crop demand, represents a huge and largely untapped resource. P activators can increase the availability of this P to plants by accelerating its transformation into soluble P fractions. In this study, we evaluated the potentials of four "P activators" (oxalic acid, lignin, phytase and ascorbic acid) to increase plant available P in a laboratory incubation experiment with two P-deficient calcareous soils used for wheat production.

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Article Synopsis
  • - Phosphate solubilizing bacteria (PSBs), specifically Leclercia adecarboxylata (L1-5), were immobilized in bio-beads to enhance lead stability by forming insoluble Pb-phosphate compounds.
  • - The bio-beads showed a phosphate solubilization capability reaching 30 mg/L and achieved a lead removal rate of up to 93% in certain growth mediums, outperforming free bacteria.
  • - The mechanisms involved in lead capture included both electrostatic attraction and ion-exchange due to the presence of hydrophobic and hydrophilic groups in the bio-beads, highlighting their potential for lead immobilization in contaminated soils.
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The aim of this work was to ascertain the effects of Pb(II) and Cr(VI) on bacterial growth, generation of reactive oxygen species (ROS), activities of superoxide dismutase (SOD), and catalase (CAT), as well as the localization of bioaccumulated heavy metals in a phosphate-solubilizing bacterium. The results showed that the ROS increased from 1.4-fold to 1.

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Article Synopsis
  • The study isolated 53 phosphate solubilizing bacteria (PSB) strains from heavy metal contaminated soils to assess their ability to immobilize lead (Pb), with notable strains identified as Leclercia adecarboxylata and Pseudomonas putida.
  • Five strains exhibited impressive lead resistance, with minimum inhibitory concentrations (MICs) ranging from 0.5 to 8 mM, while their phosphate solubilizing capabilities were influenced by organic acids, acid phosphatase activity, and pH levels.
  • The research highlighted that high lead concentrations can hinder PSB growth; however, the L1-5 strain showed potential in transforming lead ions into less harmful forms, making it
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