Publications by authors named "Zhi-wei Jia"

Considering the extremely high content of soil mineral elements in high geological background areas, it is crucial to understand the transportation and health risks of mineral elements in soil-plant systems. In this study, 30 soil and apple-paired samples were collected from the main apple production areas of Yunnan's high geological background region to determine the contents of mineral elements. The aim was to research the enrichment characteristics, nutritional values, and health risks associated with 12 mineral elements in apples.

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Background: The effects of heat acclimation (HA) on the hypothalamus after exertional heatstroke (EHS) and the specific mechanism have not been fully elucidated, and this study aimed to address these questions.

Methods: In the present study, rats were randomly assigned to the control, EHS, HA, or HA + EHS groups (n = 9). Hematoxylin and eosin (H&E) staining was used to examine pathology.

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Exertional heatstroke (EHS) is an emergency with a high mortality rate, characterized by central nervous system dysfunctions. This study aims to establish a Heat acclimation/acclimatization (HA) rat model in locomotion to recapitulate the physical state of human in severe environment of high temperature and humidity, and investigate the mechanism of organism protection in HA. (2) Methods: Wistar rats were exposed to 36 °C and ran 2 h/d for 21 days, acquired thermal tolerance test was conducted to assess the thermotolerance and exercise ability.

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Article Synopsis
  • Microwave technology raises health concerns, particularly regarding its effects on the central nervous system, where exposure can disrupt neurotransmitter release and lead to cognitive dysfunction.
  • The study investigates how microwave exposure alters the phosphorylation of SYN1, specifically focusing on the roles of kinases like Cdk5 and MEK in regulating neurotransmitter release, especially GABA.
  • Findings suggest that increased levels of Cdk5 may negatively impact SYN1 phosphorylation, leading to issues in synapse formation and GABA release, which could underlie cognitive impairments associated with microwave exposure.
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Primary Sjögren's syndrome (pSS) is associated with an increased risk of lymphoma, especially non-Hodgkin's lymphoma. The rarest pathological subtype is T-cell lymphoma. We herein report a case of a 52-year-old man with a 17-year history of pSS who was admitted to our hospital with chronic epigastric pain and a positive fecal occult blood test.

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Article Synopsis
  • * A detailed review of recent research highlights various aspects affected by microwave radiation in the brain, especially the hippocampus, including learning, memory, and brain wave patterns.
  • * The studies analyzed have inconsistencies due to differing experimental parameters like frequency and power, leading to unreliable data; thus, further rigorous research is needed to clarify the relationship between microwave exposure and its biological effects.
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The popularization of microwave raised concerns about its influence on health including cognitive function which is associated greatly with dendritic spines plasticity. SNK-SPAR is a molecular pathway for neuronal homeostatic plasticity during chronically elevated activity. In this study, Wistar rats were exposed to microwaves (30 mW/cm for 6 min, 3 times/week for 6 weeks).

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Article Synopsis
  • An ultra-low power quantum cascade laser (QCL) was developed, achieving a continuous-wave (CW) threshold power dissipation of just 0.43 W at 25 °C, which sets a new record for QCLs.
  • Design improvements included shortening the cavity length to 0.5 mm and applying high-reflectivity coatings, resulting in efficient single-mode emission using a buried second-order grating.
  • The laser demonstrates stable operation with mode-hop free emission across a wide temperature range (15 to 105 °C) and features divergence angles of 22.5° in the ridge-width direction and 1.94° in the cavity-length direction, producing maximum optical power of 2.4 mW
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We demonstrate a quantum cascade laser with active regions consisting of InAs quantum dots deposited on GaAs buffer layers that are embedded in InGaAs wells confined by InAlAs barriers. Continuous wave room temperature lasing at the wavelength of 7.2 μm has been demonstrated with the threshold current density as low as 1.

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Article Synopsis
  • Researchers developed low power-consumption distributed feedback (DFB) quantum cascade lasers (QCLs) that operate at around 4.9 μm without needing complex fabrication processes.
  • These lasers displayed remarkably low threshold current density of 0.5 kA/cm and maintained continuous wave (CW) operation at temperatures up to 105 °C with minimal power consumption.
  • At 15 °C, the DFB QCL achieved an output power of over 110 mW, high wall-plug efficiency of 5.5%, and slope efficiency of 1.8 W/A, showcasing impressive performance for low power applications.
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Article Synopsis
  • - The study presents a surface-emitting quantum cascade laser (QCL) utilizing second-order buried distributed feedback (DFB) and distributed Bragg reflector (DBR) gratings for enhanced feedback and light emission.
  • - Experimental results show that the laser emits a single-lobe far-field radiation pattern with a narrow full width at half maximum (FWHM) of 0.18°, indicating precise control over the light output direction.
  • - The DFB/DBR structure enables efficient vertical light emission with a significant surface outcoupling efficiency of 46% in continuous-wave operation and 60% in pulsed operation, achieving a single-mode emission with a notable side-mode suppression ratio of about 25 dB.
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Cervical spondylotic myelopathy (CSM) is a common cause of spinal cord dysfunction clinical disease. Surgery is the main therapeutic tool for CSM. However, there are obvious differences in clinical functional recovery after operation.

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Purpose: China, as a rapidly developing country with the largest population including over 50,000 orthopaedic surgeons, has an increasing importance in the field of spine. However, the quantity and quality of research production in the field of spine in the major regions of China-Mainland China, Taiwan, and Hong Kong is unclear. This study aimed to investigate the contribution of China to the field of spine.

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High-power broad area substrate emitting photonic-crystal distributed feedback (DFB) quantum cascade lasers (QCLs) emitting around 4.73 μm is reported. Two-dimensional centered rectangular photonic-crystal (CRPC) grating is introduced to enhance optical coherence in large area device.

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Metallic periodic structure in subwavelength scale offers an exciting way to couple light into surface plasmons (SPs), thus manipulating the properties of near-field optics. We show that subwavelength metallic grating (SMG) defined on the substrate side of substrate emitting quantum cascade lasers enables far-field improvement in mid-infrared spectrum. The SMG is designed to tailor the interaction of SPs with single mode transverse magnetic light.

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Objective: The number of citations that a paper has received reflects the impact of the article within a particular medical area. Citation analysis concerning the most cited articles have been widely reported in orthopedic surgery and its subspecialties. However, which articles are cited most frequently in orthopedic elbow surgery is unknown.

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Discogenic low back pain is the common type of chronic low back pain. However,its mechanism has not been completely clarified. Considerable evidence shows that neurotrophins play an important role in discogenic low back pain.

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In this paper, it was comparatively studied about the adsorption or desorption behaviour for Cu2+ or Zn2+ ion onto different landfilled sludge. The results showed that Cu2+ or Zn2+ adsorption isotherm could significantly conform to Freundlich and Henry equations both for the directly landfilled sludge (SSA) and the solidifying landfilled sludge (SSB). Moreover, much higher adsorption capacities were found for Cu2+ on SSA but for Zn2+ on SSB, and the removal efficiency could reach 95% for Cu2+ by SSA with dosage being 10-20 g/L or Zn2+ by SSB with dosage being 5 g/L when the initial CU2+ or Zn2+ concentration was 128 mg/L.

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