This paper describes photobiological hazards and the standards of photobiological safety in the application of medical devices. It analyzes and discusses the current status of the international standardization and the national standardization.
Equipment and Supplies ; standards ; Photobiology ; Safety

Breast Neoplasms ; diagnosis ; China ; Female ; Humans ; Mass Screening ; standards

Acromioclavicular Joint ; anatomy & histology ; injuries ; surgery ; Fracture Fixation ; instrumentation ; methods ; Humans ; Male ; Shoulder Dislocation ; surgery

Objective To explore the cause of anastomotie fistula after esophagus cancer and cardiac cancer operation and its prevention and treatment.Methods After excising the tumors,the esophagogastrostomy was performed in 60 cases,in which the cervical anastomose in 48 cases and intrathoracic anastomose was adopted in 12 cases.We retrospectively analyzed its prevention and treatment. Results Caevial anastomose in 48 cases,4 patients with anastomotic fistula in the died,while none of 12 cases in the cervical anastomose died. Conclusions Careful procedure and improving the anastomotic methods are the key factors to reduse the anastomotic fistula,the accurate control of infection and full nutritive support are the effective methods to decrease the mortality rate of this disease.

Objective 　To evaluate curative effect of Quhuang Tieji on hypercholesterolemia of newborn. Method　120 newborn with hypercholesterolemia were randomly divided into treatment group and control group,two group all accepted routine treatment,but the former group was treated with Quhuang Tieji at the same time.NANA and BAER were measured before and after treatment in two group.Results 　The scores of NBNA,latency of V wave,Ⅲ-V wave internal were significantly different between treatment group and control group after treatment.Conclusion　Quhuang Tieji can improve the scores of NBNA and latency of BAER , it had well curative effect to hyperbilirubinemia of newborn.

BACKGROUND:Previous studies with regard to male track short-distance cyclists are concentrated on the descriptive and comparison studies of morphological characteristics of athletes Up to now,few studies report the relationships between morphological characteristics and sports performance in men 1-km cyclists.OBJECTIVE:To explore an effective morphological index for evaluating physical stamina level of men cyclists in 1-km time trials,and to establish morphological models and evaluation standards for men cyclists in 1-km time trials in China.METHODS:Totally 17 men who had prepared for the 1-km cycling time trials of the fifth cycling city sport meeting in Taiyuan were examined.With the methods of step by step regression,gray correlation,measurement and evaluation theory,the morphological characteristics of these excellent cyclists were explored,and utilized in establishing morphological models,single-grading table and the ranking evaluation criteria.RESULTS AND CONCLUSION:The typical indexes of excellent 1-km men cyclists were body height and fat-free body weight.The morphological characteristics of these excellent cyclists were as follow:tall,long leg and Achilles tendon;high foot arch;heavy body weight and fat-free body weight;as well as thick thigh The present study established the evaluation model of the morphological characteristics and evaluation standards for 1-km men cyclists

Objective To investigate the influence of patients suffered from acute lower wall cardiac infarct appeared Ⅲ atrio-ventricular block tneatment with thrombolytic recanalization for the early recovery of sinus rhythm.Methods From October 01 till October 06, a total of 25 hospitalized patients in our hospital with acute lower cardiac infarct, chest pain persist over thirty minutes, but less than one hour, immediately treatment with urokinase thrombolytic therapy after hospitalization, among them 17 cases reinfusion therapy success ful and 8 cases failed. Divided into reinfusion therapy success group and failed group, observate thromholytic therapy 6 hours recanalization success and fail group the situation of sinus rhythm recovore. Results Among 17 cases recanalization success patients and 14 cases recover sinus rhythm within 6 hours ,and 8 case fail in recanalization 2 cases recover sinus rhythm in 6 hours(25%)compared these two groups statistical are meaningful ( P＜0. 01 ). Conclusion Acute lower cardiac infarct patients with Ⅲ atrio-ventricular block must use thrombolytic therapy as soon as possible in order to let oclusive coronary artery recanalize, help to recover sinus rhythm as soon as possible and decrease mortality rate.

Calcium metabolism and the transepithelial Ca2+ active transport play important roles in many basic physiological processes,such as neurotransmission,excitation-contraction coupling, vesicular secretion. Placenta is a link between maternal and fetal,transiting all the nutritions from maternal to the fetus.The syncytionbophoblast express many sorts of calcium channels/transporters and exchangers, such as voltage-dependant Ca2+ channels, transient receptor potential channels, store-operated Ca2+ channels, calcium-binding proteins, plasma membrane Ca2+ -ATPases, Na + / Ca2+ exchanger, which exhibit specific distribution and physiological properties. Therefore, this review focuses on the tissue expression and functional properties of channels, transporters,and exchangers in syncytionboph-oblasts.

Gangliosides are sialic acid-containing glycosphingolipids and abundant in the brain. Some studies showed that glycosphingolipids not only could improve the differentiation of neurons, neurite outgrowth and synaptogenesis, but also could modulate neuronal plasticity and improve neurological function after cerebral damage. GM1 was so far most widely studied glycosphingolipids. It is believed that the regulatory functions for calcium homeostasis and the interaction between GM1 and neurotrophins are essential in the mechanisms underlying its neuroprotection. In addition, GM1 has also anti-excitotoxicity, anti-oxidation and vasodilation properties. Various forms of chronic neurodegenerative diseases and hypoxia/ischemic encepha-lopathy are characterized by progressive loss and apoptosis of neurons, the neuroprotective and neruotrophic effects of GM1 could play pivotal role in the treatment of these diseases. Nowadays, GM1 was widely used for the treatment of Parkinson's disease, stroke, hypoxia-ischemic encephalopathy, craniocerebral trauma, spinal cord injury and peripheral neuropathy. Further researches for the mechanisms of GM1 will provide new strategies for the treatment of central nervous system diseases.

Condoms ; standards ; supply & distribution ; Humans ; Quality Control ; Sexually Transmitted Diseases ; prevention & control