Objective To study the application of contact oxidization and hydrolysis acidifying technology in hospital wastewater treatment. Methods Hydrolysis combined with chlorine dioxide disinfection was used in the engineering of treatment. Results Even if CODCr was 300 mg/L, BOD5 was 150 mg/L, SS was 300 mg/L, pH was 6-9 and large intestine bacteria number was 50 000/L, the wastewater quality met the requirement of related standard after treated with the present method. Conclusion The present technology was efficient, practical and economical.

Compared with hip replacement, internal fixation in the treatment of the elderly femoral neck fracture, especially the application of cannulated screws, is minimally invasive, easy to operate and economical. In recent years, it becomes the research focus in the field of orthopedic clinical research. However, configuration of cannulated screws is still controversial. Most clinicians believe that three cannulated screws being placed in parallel in an inverted triangle configuration is better than that in a triangular configuration in biomechanics and clinical effect. Nonparallel strong oblique nailing technique allows the screws to share more weight to reduce postoperative complications, so that it is more suitable for elderly patients with osteoporosis. However, the related complications of internal fixation such as nonunion, femoral neck shortening and other problems are still the focus of domestic and foreign scholars. Issues about how to control the indication of internal fixation surgery, understand related factors of the complications, and prevent complications are required to be further explored.
Aged ; Bone Nails ; Femoral Neck Fractures ; surgery ; Fracture Fixation, Internal ; adverse effects ; methods ; Humans ; Internal Fixators

Diagnostic Imaging ; Humans ; Multiple Myeloma ; diagnosis ; therapy

Aged ; Cryptococcosis ; microbiology ; pathology ; surgery ; Cryptococcus neoformans ; isolation & purification ; Follow-Up Studies ; Humans ; Laryngeal Diseases ; microbiology ; pathology ; surgery ; Male

gress. A growing body of research has committed to exploring more thrombolytic regimens. This article reviews the main methods, drugs and recent progress in thrombolytic therapy.

Bronchoscopes ; Bronchoscopy ; instrumentation ; methods ; Child ; China ; Humans

Dilatative arteriopathy is also called Dolichoectasia, presenting as enlarged ,tortuous ,and dilated arteries; especially with involvement of intracranial arteries. The incidence of dolichoectasia is quite low, but it may induce recurrent strokes with poor prognosis and up to now there is no specific management. Our study reviews the potential etiology, epidemiology, symptoms, pathophysiology, prognosis and present status of treatment for dolichoectasia.

Endovascular coil embolization is the first primary technique of choice for treating intracranial aneurysms in many centers around the world ,but some patients still got recanalizations months later,that may lead to death or severe disability just as the same in neurosurgery. This review showed the technic details of the first generation of Matrix bioabsorbable poly-meric material coil ,and analyzed clinical results among many treatment centers,involving the therapeutic measure of intracranial aneurysms.

BACKGROUND:Three-dimensional (3D) nanofiber scaffolds are aimed to mimic the physical and chemical signals of stem celsin vivo. 3D nanofiber scaffolds, which are capable to maintain the activity of stem cels, are promising in tissue regeneration and stem celltherapy. OBJECTIVE:To review the synthesis methods for 3D nanofiber scaffolds, and the interactions of stem cels and 3D scaffolds as wel as the current progress of 3D nanofiber scaffolds in tissue engineering. METHODS:Web of Science was searched with key words of “tissue engineering, nanofiber scaffold, stem cellfate” in English for articles relevant to stem celltissue engineering and 3D nanofiber scaffolds. RESULTS AND CONCLUSION:3D nanofiber scaffolds can mimic the physical architecture ofin vivo microenvironment due to its nano-scale topology. Chemical modification of scaffolds endows chemical cues to stem cels. Therefore, 3D nanofiber scaffold can be a promising delivery vehicle of stem cels in tissue engineering. Nanofiber scaffolds can be synthesized through self-assembly, sol-gel phase separation, and electric spinning. 3D nanofiber scaffolds have been shown to improve thein vitro proliferation of hematopoietic stem cels, embryonic stem cels, mesenchymal stem cels, and neural stem cels. 3D nanofiber scaffolds with specific topology/chemical properties can induce the differentiation of stem cels into bone, cartilage, nerve, or muscle. 3D nanofiber scaffold which provides a satisfactory microenvironment for stem cellenhance the performance of stem celltherapy.

BACKGROUND:Self-assembling peptide scaffolds have attracted much more attention among three dimensional biomaterials due to its biocompatibility, biodegradation, and tailor-made properties.
OBJECTIVE:To review the structure and design of functionalized self-assembling RADA peptide, and the recent advances in the use of RADA self-assembling peptide for three-dimensional cel culture in cel therapy applications.
METHODS:Total 224 literatures related to self-assembling peptide and tissue engineering from PubMed, Web of Science and CNKI databases were screened out for this review. The keywords were“self-assembly peptide, tissue engineering”in English and Chinese, respectively. Final y 48 of 224 articles about the design, fictionalization, and three-dimensional cel culture of peptide scaffolds were included in this review.
RESULTS AND CONCLUSION:Self-assembling peptide could undergo spontaneous assembly into wel-ordered interwoven nanofibers in water and rapidly form hydrogel, which physical y mimics the architecture of natural extracel ular matrix to ensure a real three-dimensional microenvironment for cel s. In terms of bio-function, this material can be tailor-made with various bioactive short peptide motifs to promote cel adhesion, proliferation, and differentiation.