This article analyses and summarizes the clinical maintenance work of Elekta Precise Linac in five years.Afer the further research on its performances and errors,a better way is found to solve the main problem of clinical electronic linac,i.e.the way to reduce the Stop Rate of Linac in Radiotherapy.

The flavin-containing monooxygenase 3 (FMO3) is an important hepatic microsomal enzyme. Numerous mutations of FMO3 gene have been reported, and polymorphic varients of the gene have been identified. Several studies indicated that variability in the expression of FMO3 involved in some nitrogen, or sulfur-containing durg metabolism. This review summarizes the genetic polymorphism of FMO3 and its role in drug metabolism and toxicity.
Drug-Related Side Effects and Adverse Reactions ; Humans ; Oxygenases ; genetics ; Polymorphism, Genetic

Humans ; Physicians ; organization & administration

The risk factors of traffic crash include drinking/drunk drive, accident proneness, fatigue driving, speeding, and poor vehicle quality. This article introduces the protection, emergency treatment, and basic scientific research of road traffic injury (RTI). As a public health issue, RTI is preventable, and personal factor is a key problem. It is important to establish an accurate and comprehensive RTI database, which may provide necessary information for the epidemiological research and crash prevention. The author also gives some suggestions on road traffic safety development in our country.
Accidents, Traffic ; prevention & control ; Databases, Factual ; Epidemiologic Research Design ; Humans ; Wounds and Injuries ; prevention & control ; therapy

Carcinoma, Hepatocellular ; surgery ; Hepatectomy ; Humans ; Liver Neoplasms ; surgery

Benzylisoquinolines ; therapeutic use ; Calcium Channel Blockers ; therapeutic use ; Combined Modality Therapy ; Humans ; Pneumoconiosis ; drug therapy ; Tablets

Accidents, Traffic ; prevention & control ; Global Health ; Humans ; World Health Organization

Disaster Medicine ; Earthquakes ; Emergency Medicine ; General Surgery ; Humans ; Relief Work ; Wounds and Injuries ; surgery

Bidirectional signal transduction is a newly elucidated mechanism in intercellular communication. The bidirectional signal transduction mediated by the Eph-ephrin is an important representative in this field. The Eph family receptor tyrosine kinases and their membrane-bound ligands, the ephrins, play pivotal roles in the development of nervous system, angiogenesis, etc. The signal transduction into cells by Eph receptors is the forward signal, whereas the signal transduction by ephrins is the reverse signal. Based on their molecular structures, the ephrins can be divided into two subclasses, i.e. ephrinA and ephrinB. The ephrinBs are transmembrane proteins, which can activate FAK, JNK and Wnt signal transduction pathways through phosphotyrosine-dependent signaling and PDZ-binding motif-dependent signaling. The ephrinAs are glycosylphosphotidylinositol (GPI) anchored proteins, which can also mediate reverse signal transduction.

0.05).Conclusion The therapeutic mechanism of AEP of Chinese herbal medicine for asthma may be related with the inhibition of EOS infiltration,the decrease of peripheral IL-4 content and the increase of IFN-?.