Publications by authors named "Guofeng He"

Nanosized spherical polyelectrolyte brushes (SPBs) are ideal candidates for the preparation of nanometal catalysts, protein separation, and medical diagnostics. Until now, SPBs have been synthesized by photo-emulsion polymerization in a batch reactor, which remains challenging to scale up. This paper reports a successful continuous preparation of SPBs by photo-emulsion polymerization in a self-made microreactor.

View Article and Find Full Text PDF

Geocell is widely used in the treatment of poor roadbed, which can restrain soil laterally and improve the stability of soil. In cold area engineering, a change in temperature can influence the mechanical properties of geocell of different materials. To study the mechanical response of geocell at low temperatures, three types of geocell strips commonly used in engineering, namely the polyethylene (HDPE), polypropylene (PP), and polyester (PET), were studied via the uniaxial tensile test at the ambient temperatures of -5 °C, -20 °C, and -35 °C, respectively.

View Article and Find Full Text PDF

Endocrine therapy and radiotherapy are the main treatments for luminal A breast cancer. However, drug and radiotherapy resistance could occur during long-term treatment, leading to local recurrence and distant metastasis. Some studies have found that drug resistance might be related to human epidermal growth factor receptor-3 (HER3) overexpression.

View Article and Find Full Text PDF

Background And Aim: The high-mobility group box 1 (HMGB1) protein plays an important role in a lot of biological behaviors, including DNA damage repair, gene transcription, cell replication, and cell death, and its expression is higher in many solid tumors tissues than in their adjacent normal tissues, and it is always involved in tumor proliferation, metastasis, therapeutic tolerance, and poor prognosis. However, HMGB1 in proliferation and radioresistance of esophageal squamous cell carcinoma (ESCC) remains poorly understood. In this study, the effect of HMGB1 on proliferation, cell death, DNA damage repair and radioresistance, and its underlying mechanism was investigated in human ESCC.

View Article and Find Full Text PDF

Radiotherapy is by means of ionizing radiation to kill tumor cells, inhibit and control the growth, metastasis and diffusion of tumor cells. During the last few decades, application of radiotherapy combined with chemotherapy and surgery are clinical mainstream treatments. However, little is known what radio-sensitization agents have been patented in China and what the potential drug candidates for patents are in China.

View Article and Find Full Text PDF
Article Synopsis
  • The study focused on the ecdysteroid composition and levels in both adult and egg stages of the invasive pest Opogona sacchari.
  • The ecdysteroid titer was significantly higher in female adults (5.978 ng/adult) compared to male adults (0.080 ng/adult) four days post-eclosion.
  • Ecdysteroid levels varied during ovary and egg development, peaking at 10.48 ng/ovary on day 3 and showing a slight drop from 0.010 ng/egg to 0.006 ng/egg between days 3 and 4, with three main ecdysteroid components identified.
View Article and Find Full Text PDF