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.

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.

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

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

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.

Objective To explore the measurement of femoral neck shortening (FNS) after cannulated screwing for elderly femoral neck fractures and the effect of FNS on hip functional outcome.Methods Totally 214 elderly patients with femoral neck fracture were included in this study who had been treated by fixation with cannulated screws from June 2007 to October 2013.They were 71 males and 143 females,with an average age of 77.2 years.According to Garden classification system,65 cases were types Ⅰ and Ⅱ (undisplaced fractures),and 149 types Ⅲ and Ⅳ (displaced fractures).The postoperative X-ray and follow-up X-ray films were compared to observe whether the trailing end of screw shaft was exposed to the outer cortex of the proximal femur.We chose the screw which had the longest exposure of trailing end to measure the length of the exposed screw shaft as the length of FNS.FNS indexes were defined according to the ratio of the length of exposed screw shaft to the thickness of screw head.FNS degree 1:＜ 1 screw head; FNS degree 2:1 to 2 screw heads; FNS degree 3:＞ 2 screw heads.The relationships of the FNS length respectively with thefemur length decrease and Harris scores of hip functional outcome were analyzed statistically.Results FNS occurred in 78 cases,giving an incidence of FNS of 36.4％ (78/214).Of them,12 cases (15.4％)were defined as degree 1,24 cases (30.8％) as degree 2,and 42 cases (53.8％) as degree 3.There was a significant positive correlation between the FNS length and the femur length decrease(r =0.919,P =0.000).The average Harris score at 12 months postoperation for 180 cases was 77.3 points (ranging from 32 to 98 points).The average Harris score for those with FNS was significantly lower than that for those without FNS (t =9.904,P =0.000).There was a significant negative correlation between the FNS length and Harris scores (r =-0.707,P =0.000).Conclusions Our measurement of FNS and FNS indexes are easy to be used in clinic.Severe FNS can influence the function of hip joint.

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.