Publications by authors named "Zhiyu Chen"

We propose a beam scanning system based on an extended Risley prism structure. This system uses a rotating mirror structure and expands the original construction of the balanced and stable Risley prism. There is much research on extended Risley prism structures, but the scanned angle of their extended systems is less than 180°.

View Article and Find Full Text PDF

To explore the Chinese community-dwelling intention of older adults to adopt gerontechnology and its influencing factors. A mixed-methods sequential explanatory design with an inductive approach was employed. In phase 1, a self-made questionnaire was administered from August 2018 to December 2019.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to identify clinical features and prognostic factors affecting survival in young adults (≤40 years) diagnosed with advanced gastric cancer, involving 220 patients.
  • Results showed a median overall survival of 16.3 months, with significant factors including high neutrophil-lymphocyte ratio and hypoproteinemia as poor prognostic indicators, while previous radical gastrectomy was linked to better survival.
  • A three-tier prognostic index was created to categorize patients into good, intermediate, or poor-risk groups, potentially assisting in clinical decision-making and future research on this patient population.
View Article and Find Full Text PDF

Background: Hepatocellular carcinoma (HCC) is one of the most serious consequences of chronic hepatitis B virus (HBV) or hepatitis C virus (HCV) infection. This study sought to investigate long-term outcomes after liver resection for HCC among patients with HBV/HCV co-infection (HBV/HCV-HCC) compared with patients with HBV infection (HBV-HCC).

Methods: Patients who underwent curative-intent liver resection for HCC were identified from a multicenter Chinese database.

View Article and Find Full Text PDF

Tracheal stenosis following injury cannot be effectively treated. The current study compared the protective effects of different anti‑inflammatory drugs on tracheal stenosis and investigated their possible mechanisms. Rabbit tracheal stenosis models following injury were constructed and confirmed using hematoxylin and eosin (H&E) staining.

View Article and Find Full Text PDF

Under the catalysis of knowledge anxiety and cognitive surplus, knowledge sharing platforms has experienced rapid growth, which has accelerated the integration of knowledge resources online. As with all new successful and sustainable business products, the consumers will play an important role in the future development of online paid knowledge. Therefore, we constructed an extended technological acceptance model by examining factors that influence young Chinese people's willingness to pay for online paid knowledge.

View Article and Find Full Text PDF

It is important to early evaluate or predict the efficacy to avoid ineffective treatment for most colorectal cancer (CRC) patients with liver metastases. The medical records of 440 patients with histologically confirmed primary CRC admitted to the Fudan University Shanghai Cancer Center were reviewed. High baseline serum alkaline phosphatase (AKP) and γ-glutamyl transferase (GGT) is associated with worse overall survival.

View Article and Find Full Text PDF

Background: Preoperative serum carbohydrate antigen 125 (CA125) is used to judge the diagnosis and prognosis of various tumors. However, the relationship between preoperative serum CA125 and prognosis of hilar cholangiocarcinoma (HCCA) has not been proven. This study aims to evaluate preoperative serum CA125 in predicting the prognosis of HCCA after resection.

View Article and Find Full Text PDF

Mn alloying in thermoelectrics is a long-standing strategy for enhancing their figure-of-merit through optimizing electronic transport properties by band convergence, valley perturbation, or spin-orbital coupling. By contrast, mechanisms by which Mn contributes to suppressing thermal transports, namely thermal conductivity, is still ambiguous. A few precedent studies indicate that Mn introduces a series of hierarchical defects from the nano- to meso-scale, leading to effective phonon scattering scoping a wide frequency spectrum.

View Article and Find Full Text PDF

Background: Tumor-associated macrophages (TAMs) are abundant in the tumor microenvironment (TME). However, their contribution to the immunosuppressive status of the TME remains unclear.

Methods: We integrated single-cell sequencing and transcriptome data from different tumor types to uncover the molecular features of TAMs.

View Article and Find Full Text PDF

Background: The investigation of molecular mechanisms involved in lipid metabolism plays a critical role for the genetic engineering of safflower (Carthamus tinctorius L.) to increase the oil accumulation level or to change the oil composition. Although transcript sequences are currently available for the leaves and flowers of safflower, a wide range scan of temporal transcripts at different stages of seed development has not been conducted for safflower.

View Article and Find Full Text PDF

The current treatments for benign tracheal stenosis are inefficient. The present study examined the expression of histone deacetylase 2 (HDAC2) in different tracheal stenosis models and explored its association with the proliferation of tracheal granulation tissue and its ability to constitute a potential therapy for tracheal stenosis. Animal tracheal stenosis models were established, as indicated by hematoxylin and eosin (H&E) staining.

View Article and Find Full Text PDF
Article Synopsis
  • Hepatocellular carcinoma (HCC) is prevalent in adolescents and young adults (AYAs) in hepatitis B-endemic regions, and this study compares AYAs (ages 13-39) to older adults (OAs, ages 40+) who underwent liver resection for HCC.
  • Among 1952 patients studied, AYAs demonstrated fewer instances of cirrhosis but had more advanced tumor characteristics; their postoperative outcomes were similar to OAs, yet AYAs exhibited comparable overall survival but a shorter time to recurrence.
  • The findings indicate that AYAs experience a higher recurrence rate post-surgery for HCC, suggesting the need for closer monitoring after liver resection in younger
View Article and Find Full Text PDF

Vagina atrophy is a common symptom in women after menopause owing to decreasing estrogen levels. The most conventional treatment for this condition is estrogen cream. The shortcoming is its weak adhesion to the vagina mucus, thus requiring frequent daily application.

View Article and Find Full Text PDF

The presence of malachite green dye in wastewater has a great negative impact on the environment. At present, industrial wastewater is treated using adsorption, electrolysis and membrane separation, among which the adsorption method is the most widely used wastewater treatment. In this study mesoporous silica nanoparticles (MSNs) were prepared using the sol-gel method and modified with the natural polymer urushiol (U) to obtain MSN@Us, which have a core-shell structure.

View Article and Find Full Text PDF

Background: To retrospectively analyze the pulmonary computed tomography (CT) characteristics and dynamic changes in the lungs of cured coronavirus disease 2019 (COVID-19) patients at discharge and reexamination.

Methods: A total of 155 cured COVID-19 patients admitted to designated hospitals in Yunnan Province, China, from February 1, 2020, to March 20, 2020, were included. All patients underwent pulmonary CT at discharge and at 2 weeks after discharge (during reexamination at hospital).

View Article and Find Full Text PDF

Clinical vancomycin (Van) treatment is administered over a prolonged period to achieve a sustained therapeutic effect. Accurate, rapid, and continuous Van detection is an unmet medical monitoring need that can provide data-based guidance for doctors to adjust the dosage and treatment plan in real-world settings. In this study, we created a Van-specific, fluorescent biosensor that was combined with a microdialysis sampling technique to develop a rapid, simple, accurate, and sensitive detection method, which was validated for Van in vivo.

View Article and Find Full Text PDF

Aim: A third-line chemotherapy regimen for metastatic colorectal cancer (mCRC) is not available in China. Studies have shown that raltitrexed or S-1 has no complete cross-resistance with fluorouracil (5-FU). In this phase II study, we prospectively analyzed the efficacy and safety of raltitrexed combined with S-1 (RS regimen) in the treatment of mCRC after the failure of conventional chemotherapy.

View Article and Find Full Text PDF

Aims: Previous studies have uncovered the function of receptor-interacting protein kinase 1 (RIPK1) to mediate both cell survival and death. Moreover, RIPK1 modulates apoptosis and necroptosis depending on its activity, phosphorylation or ubiquitylation status. Many studies have explained the role or mechanism of RIPK1 in necroptosis.

View Article and Find Full Text PDF

Metastasis of osteosarcoma (OS) is an essential factor affecting the prognosis and survival of patients. The tumor microenvironment, including tumor immune-infiltrating cells (TIIC), is closely related to tumor progression. The purpose of this study was to investigate the differences between metastatic and non-metastatic immune-infiltrating cells in OS and to identify key immune-related genes.

View Article and Find Full Text PDF

We focus on exploring the LIDAR-RGB fusion-based 3D object detection in this paper. This task is still challenging in two aspects: (1) the difference of data formats and sensor positions contributes to the misalignment of reasoning between the semantic features of images and the geometric features of point clouds. (2) The optimization of traditional IoU is not equal to the regression loss of bounding boxes, resulting in biased back-propagation for non-overlapping cases.

View Article and Find Full Text PDF

Background And Aims: Up to 40%-65% of patients with perihilar cholangiocarcinoma (PHC) rapidly progress to early recurrence (ER) even after curative resection. Quantification of ER risk is difficult and a reliable prognostic prediction tool is absent. We developed and validated a multilevel model, integrating clinicopathology, molecular pathology and radiology, especially radiomics coupled with machine-learning algorithms, to predict the ER of patients after curative resection in PHC.

View Article and Find Full Text PDF

Accumulated studies have investigated pharmacological interventions for first-episode schizophrenia (FES) patients. However, studies on subsequent treatment steps, which are essential to guide clinicians, are largely missing. This Sequential Multiple-Assignment Randomized Trials comparing Antipsychotic Treatments (SMART-CAT) program intends to evaluate the effectiveness of commonly used antipsychotic drugs in FES patients.

View Article and Find Full Text PDF

Introduction: Pancreatic cancer is one of the deadliest cancers in the world, and pancreatic ductal adenocarcinoma (PDAC) accounts for 90% of all cases. Human positive coactivator 4 (PC4) is a transcriptional coactivator that has been associated with the development and progression of several tumors. However, no studies investigated the potential role of PC4 in PDAC.

View Article and Find Full Text PDF