Clinical Efficacy of Automatic Ruiyun Procedure for Hemorrhoids and Procedure for Prolapse and Hemorrhoids in the Treatment of Mixed Hemorrhoids: A Comparative Study.

Aim: The occurrence of mixed hemorrhoids becomes increasingly more frequent with age, posing psychological pressure and distress to affected patients. This retrospective study aims to compare the clinical efficacy of automatic Ruiyun procedure for hemorrhoids and procedure for prolapse and hemorrhoids in the treatment of mixed hemorrhoids.

Methods: A retrospective cohort study of patients with mixed hemorrhoids who visited the Third Affiliated Hospital of Gansu University of Chinese Medicine (The 1st People's Hospital of Baiyin) from January 2019 to December 2023 was conducted using propensity score matching (PSM) with a ratio of 1:1 for nearest neighbor matching grouping.

Role and value of the tumor microenvironment in the progression and treatment resistance of gastric cancer (Review).

Gastric cancer (GC) is characterized by a complex and heterogeneous tumor microenvironment (TME) that significantly influences disease progression and treatment outcomes. The tumor stroma, which is composed of a variety of cell types such as cancer‑associated fibroblasts, immune cells and vascular components, displays significant spatial and temporal diversity. These stromal elements engage in dynamic crosstalk with cancer cells, shaping their proliferative, invasive and metastatic potential.

A process of leaching recovery for cobalt and lithium from spent lithium-ion batteries by citric acid and salicylic acid.

There is great economic and environmental value in recovering valuable metal ions from spent lithium-ion batteries (LIBs). A novel method that employs organic acid recovery using citric acid and salicylic acid was used to enhance the leaching of metal ions from the cathode materials of spent LIBs. The effects of the acid concentration, reducing agent content, solid to liquid (S : L) ratio, temperature, and leaching time were systematically analyzed and the optimal acid leaching process condition was determined through the results.

Corrosion Product Film of a Medium-Mn Steel Exposed to Simulated Marine Splash Zone Environment.

The corrosion behavior of a medium-Mn steel in a simulated marine splash zone was studied by a dry-wet cyclic corrosion experiment and electrochemical experiment. The corrosion products were characterized by corrosion rate calculation, composition detection, morphology observation, element distribution detection, valence analysis, polarization curve, and electrochemical impedance test. The results show that the corrosion products of the sample mainly include γ-FeOOH, FeO, MnO, and a small amount of (Fe,Mn)O, and the valence state of iron compounds and manganese compounds in different corrosion stages changed obviously.