Publications by authors named "Haihua Zhan"
Article Synopsis
- Polyethylene terephthalate (PET) is a thermoplastic crucial for recycling due to its environmental and health benefits.
- This article reviews different recycling methods of PET waste, emphasizing energy recovery and various techniques like mechanical, chemical, and biological recycling, while highlighting the production of high-value products.
- It concludes that mechanical recycling is effective for creating PET products with diverse applications, while physical recycling stands out for its cost-effectiveness, low energy use, and environmental benefits.
Article Synopsis
- This study investigated how the position of the sesamoid bone in the thumb affects the diagnosis of dorsal dislocation at the metacarpophalangeal joint.
- It involved analyzing X-ray images of normal and dislocated joints from both outpatients and emergency patients over a five-year period.
- Findings revealed measurable differences in the sesamoid's location and length based on gender, and a significant change in its ratio before and after joint reduction treatment.
Introduction: World Health Organization (WHO) Grade III meningioma is a central nervous system tumor with a poor prognosis. In this retrospective cohort study, the authors constructed a nomogram for predicting the prognosis of WHO Grade III meningioma.
Methods: The patients of this nomogram were based on the Surveillance, Epidemiology, and End Results (SEER) database between 2000 and 2018.
Article Synopsis
- The study aimed to create a prognostic model for predicting 5- and 10-year survival rates in patients with ependymoma (EPN) using data from the SEER database.
- Seven key survival factors (age, gender, morphology, location, size, laterality, and resection) were identified through LASSO regression.
- The resulting nomogram showed moderate accuracy for predicting outcomes, which can help clinicians tailor treatment plans for EPN patients.
Background: Wide-awake local anesthesia no tourniquet (WALANT) technique has emerged among hand surgeons with other indications. Surgeries involving pedicled flap and revascularization are no longer used as contraindications. The present study aimed to evaluate the feasibility and merits of the WALANT technique in random skin flap surgery.
View Article and Find Full Text PDFZinc orotate (ZnOr₂), which is a new kind of poly(vinyl chloride) (PVC) stabilizer, is prepared in this work through the precipitation method, and its impact on the thermal stability of PVC is measured by thermogravimetric analysis (TG), Congo red test, and discoloration test. The results exhibit that the thermal stability of PVC is positively enhanced after the addition of ZnOr₂. In contrast with a commercial thermal stabilizer, zinc stearate (ZnSt₂), a noteworthy improvement was observed that ZnOr₂ could postpone the "zinc burning" of PVC.
View Article and Find Full Text PDF[Evaluation of reconstruction of extensor pollicis function by transfer of extensor indicis].
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
July 2004
Objective: To assess the long-time results of reconstruction of the extensor pollicis longus (EPL) function by transfer of the extensor indicis (EI).
Methods: From August 1978 to March 2003, 46 cases of loss of the EPL function were treated by transfer of the extensor indicis. Of 46 cases, there were 32 males and 14 females, aged 16-51 years with an average of 36 years; there were 24 cases of old traumatic rupture and 22 cases of secondary rupture.
[Treatment of old scaphoid fracture with Russe technique].
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
July 2003
Objective: To report the effect of Russe technique in treating old scaphoid fracture.
Methods: From January 1987 to February 1999, 11 cases of old scaphoid fractures were treated with Russe technique. The follow-up period averaged 5 years and 7 months.