Publications by authors named "Zheng Zong"

Frequency transfer is a key challenge in machine learning as it allows researchers to go beyond in-range analyses of spectrum properties towards out-of-the-range predictions. Traditionally, to predict properties at a specific frequency, targeted spectrum is included in training data for a deep neural network (DNN). However, due to limitations of measurement or computation source, training data at some frequencies are hardly accessible, especially for multi-physics problems.

View Article and Find Full Text PDF

Peer feedback has proven to be practically helpful for students in achieving learning outcomes, especially through peer feedback among students in matching achievement groups. However, some researchers have raised concerns about whether students would be better served by being matched with different achievement groups rather than 'random' or same-level matching methods. No studies have investigated whether other ways of matching groups would change outcomes.

View Article and Find Full Text PDF

Cotton is an economically critical crop worldwide, and drought stress strongly affects its growth and development. Ubiquitination modifies protein activity and is crucial in numerous biological processes. Ubiquitin-conjugating enzymes serve as intermediaries in the protein ubiquitination process and play important roles in plant responses to abiotic stress.

View Article and Find Full Text PDF
Article Synopsis
  • - The study aimed to evaluate the effectiveness and safety of combining transarterial chemoembolization (TACE) with lenvatinib for treating unresectable hepatocellular carcinoma (uHCC), as there is limited research on this combination.
  • - In a retrospective analysis involving 249 uHCC patients, two treatment groups were formed: one receiving TACE alone and the other receiving TACE combined with lenvatinib; findings indicated improved overall survival (OS) and progression-free survival (PFS) in the TACE-LEN group.
  • - Results showed that the TACE-LEN group had significantly better OS (1-year and 2-year rates) and PFS rates compared to the TACE-alone
View Article and Find Full Text PDF
Article Synopsis
  • Raman spectroscopy is gaining interest for quickly identifying foodborne pathogens by their physical traits, with a focus on the reliability of the associated Raman fingerprint database for genetic identification.
  • The study developed a classification model using t-SNE and support vector machine (SVM) techniques, achieving a recognition accuracy of 97.04% for four specific pathogens.
  • The research demonstrated that the predicted phenotypes matched the actual genotypes with at least 83.3% accuracy, highlighting the potential of combining Raman spectroscopy with machine learning for efficient pathogen detection.
View Article and Find Full Text PDF

Nitrate (NO) has been identified as a key component of particulate matter (PM) in China. However, there is still a lack of understanding regarding its sources and how it forms, especially in the context of high-frequency and long-term data. In this study, NO levels were observed on an hourly basis over an almost three-year period at an urban site in the Pearl River Delta (PRD) region, China, from January 2019 to December 2021.

View Article and Find Full Text PDF

Background: Gastric cancer (GC) has a poor prognosis because it is highly aggressive, yet there are currently few effective therapies available. Although protein ubiquitination has been shown to play a complex role in the development of gastric cancer, to date, no efficient ubiquitinating enzymes have been identified as treatment targets for GC.

Methods: The TCGA database was used for bioinformatic investigation of ubiquitin-specific protease 31 (USP31) expression in GC, and experimental techniques, including Western blotting, qRT-PCR, and immunohistochemistry, were used to confirm the findings.

View Article and Find Full Text PDF

Excitation-emission matrix (EEM) fluorescence spectroscopy is a widely-used method for characterizing the chemical components of brown carbon (BrC). However, the molecular basics and formation mechanisms of chromophores, which are decomposed by parallel factor (PARAFAC) analysis, are not yet fully understood. In this study, we characterized the water-soluble organic carbon (WSOC) in aerosols collected from Karachi, Pakistan, using EEM spectroscopy and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS).

View Article and Find Full Text PDF
Article Synopsis
  • Nitrous acid (HONO) is a reactive gas crucial to atmospheric chemistry, but accurately measuring its emissions and sources is challenging.
  • The study developed a new method using nitrogen and oxygen isotopes to distinguish HONO origins in an urban area in North China, revealing that secondary formation is the main process for HONO generation both day and night.
  • Findings indicate that various sources contribute to HONO emissions, including coal combustion (22.2%), biomass burning (26.0%), vehicle exhaust (28.6%), and soil emissions (23.2%), highlighting the isotopic method's potential for improving air quality management.
View Article and Find Full Text PDF

To explore the change features of PM-bound metals in a background site of North China in the past ten years, 71 and 160 samples were collected from December 2011 to January 2013 (period Ⅰ) and from September 2019 to November 2021 (period Ⅱ) in Tuoji Island National Atmospheric Monitoring Station, respectively.The concentration of metals sampled was determined using ICP-MS, and the concentrations, sources, and health risks of heavy metals were compared. The results revealed that the average concentration of PM was (54.

View Article and Find Full Text PDF

Ammonia (NH) is the primary atmospheric alkaline gas, playing a crucial role in the atmospheric chemistry. Recently, non-agricultural emissions have been identified as the dominant sources of NH in urban areas. However, few studies have quantified the contributions of different sources to regional NH.

View Article and Find Full Text PDF
Article Synopsis
  • Imaging photoplethysmography (iPPG) is a non-invasive technology used to measure health-related physiological parameters, but it often struggles with noise interference affecting pulse signal quality.
  • The study introduces a novel spatial averaging method that uses adaptive weights on specific facial regions to improve the pulse signal quality.
  • Results demonstrate that this new method outperforms existing techniques in delivering clearer pulse signals, enhancing the accuracy of measuring essential parameters like heart rate.
View Article and Find Full Text PDF
Article Synopsis
  • - The study investigates the sources and atmospheric behaviors of organic carbon aerosol (OC) in Guangzhou, China, highlighting that about 60% of OC originates from non-fossil sources like biomass burning and biogenic emissions.
  • - Non-fossil secondary organic carbon (SOC) was identified as the main contributor to OC, making up approximately 39%, followed by fossil SOC (26%), fossil primary OC (14%), biomass burning OC (13%), and cooking OC (8%).
  • - The research also examines how the aging of OC impacts its characteristics, finding that OC particles from non-fossil sources exhibit a higher degree of aging (86%) when influenced by emissions from northern regions.
View Article and Find Full Text PDF
Article Synopsis
  • * A study of 196 patients showed that 77.6% experienced ascites regression after NUC treatment at 12 months, while re-compensation rates varied over the next five years, with an overall rate of 59.7% at 12 months.
  • * Factors such as baseline serum ALT and HBV DNA levels were identified as risk factors influencing the success of re-compensation of ascites in these patients.
View Article and Find Full Text PDF

Background: This study aimed to assess the diagnostic accuracy of polymerase-chain-reaction by saliva.

Method: We searched Pubmed, EMBASE, Cochrane Library and Web of Science. A case-control or cohort study designed to explore the saliva specimens for diagnosing the cytomegalovirus infection was eligible for this study.

View Article and Find Full Text PDF
Article Synopsis
  • Mental budgeting is a cognitive strategy that helps people manage their spending, influenced by their thinking styles and emotions.
  • Research found that individuals who engage in calculation-based thinking tend to budget better, particularly among college students and new workers.
  • Additionally, calculation-based thinking reduces the willingness to spend, especially on pleasure-driven (hedonic) products compared to practical (utilitarian) ones.
View Article and Find Full Text PDF
Article Synopsis
  • * A study conducted in Guangzhou measured stable nitrogen isotopes in fine atmospheric particles at different heights, revealing distinct sources of NH between ground level and 488 meters.
  • * Findings showed that non-agricultural activities, particularly vehicular exhaust, contribute significantly more to urban NH than previously estimated, suggesting a need to reassess ammonia emission inventories in the region.
View Article and Find Full Text PDF

Stable nitrogen isotope (δN) technology has often been used as a powerful tool to separate nitrogen oxides (NO) produced by residential combustion (i.e., biomass burning and coal combustion) from other sources.

View Article and Find Full Text PDF
Article Synopsis
  • - This study introduces two new methods called adaptively regularized bases-expansion subspace optimization methods (AR-BE-SOMs) to address issues related to regularization parameters and low spatial resolution in electrical impedance tomography (EIT).
  • - The methods involve using adaptive L-norm and weighted L-norm regularizations optimized through a conjugate gradient approach, where adjustments are made between induced contrast current and conductivity updates.
  • - Results from numerical and experimental tests demonstrate that AR-BE-SOMs outperform traditional BE-SOM techniques in various metrics, making them promising for applications like lung health monitoring and complex shape reconstructions.
View Article and Find Full Text PDF
Article Synopsis
  • - Organophosphate esters (OPEs) are widely produced and used, raising environmental concerns, particularly in the Bohai Sea, where a 5-year monitoring study assessed their levels, sources, and seasonal distribution.
  • - The average atmospheric concentration of ΣOPEs was found to be 7.65 ± 6.42 ng/m³, with chlorinated OPEs, especially TCEP and TCPP, showing a slight increasing trend over the years and variable seasonal concentrations across different sampling sites.
  • - The majority of TCEP and TCPP in the atmosphere came from seawater volatilization, with significant contributions also from coastal rivers; addressing river input is crucial for improving the environmental quality of the Bohai
View Article and Find Full Text PDF

During the SARS period in 2003 and COVID-19 pandemic period in 2020, unexpected severe particulate matter pollution occurred in northern China, although the anthropogenic activities and associated emissions have assumed to be reduced dramatically. This anomalistic increase in PM pollution raises a question about how source emissions impact the air quality during these pandemic periods. In this study, we investigated the stable Cu and Si isotopic compositions and typical source-specific fingerprints of PM and its sources.

View Article and Find Full Text PDF
Article Synopsis
  • Black carbon (BC) aerosol is a significant contributor to air quality issues and global warming, with petroleums combustion identified as the leading source in Guangzhou, China (39%).
  • The study utilized a dual-carbon isotope method via a Bayesian Markov chain Monte Carlo (MCMC) approach to analyze BC sources, highlighting the influence of regional air mass transport on BC contribution patterns.
  • The research indicates that fossil fuel combustion is responsible for 84% of the total BC reduction from 2013-2018, and predicts it will take about 6 years to meet the WHO PM guideline values if current emission controls remain unchanged.
View Article and Find Full Text PDF
Article Synopsis
  • * The patient experienced chest pain and was found to have a giant aneurysm and other cardiac issues, leading to the administration of anticoagulation, antiplatelet therapy, and stenting to restore blood flow.
  • * The study suggests the importance of screening for coronary aneurysms in SLE patients due to the associated risks, as evidenced by this case and 16 similar reports.
View Article and Find Full Text PDF
Article Synopsis
  • * This study focuses on modifying viologen-substituted iridium(III) complexes to create a multicolor luminescence effect, allowing for reversible changes in luminescence intensity and color based on electrical input.
  • * Demonstrated applications include using these materials for information recording, display, and encryption, utilizing near-infrared technology for reading luminescence that is otherwise invisible.
View Article and Find Full Text PDF

Objective: To study brainstem auditory evoked potential (BAEP) in neonates with hyperbilirubinemia using short auditory stimuli (60 dBnHL), and to investigate the differences in the inter-aural latency difference (ILD) of wave V between neonates with different total serum bilirubin (TSB) levels.

Methods: A prospective study was conducted in neonates with hyperbilirubinemia who were admitted to the Department of Neonatology, Yuhuan People's Hospital of Zhejiang Province, from May 2019 to October 2020. The neonates were divided into a severe group (=50) and a mild group (=50) according to their TSB levels.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_session5a0ja2gfhsbipp11cb7vqdca25lk4i3v): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once