Ji-yan Zheng

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OBJECTIVE Respiratory distress syndrome (RDS) is a frequently seen acute respiratory disorder in the newborn infants. Since the original description of deficiency of the pulmonary surfactant in premature neonates by Avery in 1959, RDS has most commonly been attributed to developmental immaturity of surfactant production. But in clinical practice it has been(More)
Buffer overflows remain the leading cause of software vulnerabilities in the world of information security. The proposed segment-based non-executable stack approach aims to prevent the injection and execution of arbitrary code in an existing process's stack space under Windows NT/2000 and Intel 32-bit CPUs. The application's user-mode stack is relocated to(More)
OBJECTIVE To explore the dynamic change of serum cortisol and insulin levels, and their relation with blood glucose concentration in asphyxiated neonates. METHODS The levels of serum cortisol and insulin at d1,d3 and d7 of birth were measured by radioimmunoassay and the concentration of blood glucose was measured with glucose oxidase method in 43(More)
OBJECTIVES To evaluate the clinical significance of flow cytometry (FCM) to detect the cytomegalovirus (CMV) PP65 antigen in patients with CMV infection. METHODS Samples from 35 patients without CMV infection were used as negative control. The definite diagnosis of CMV infection was based on the national criteria for CMV infection. All 136 patients with(More)
Stack smashing is a common mode of buffer overflow attack for hijacking system control. A segment-based non-executable stack approach is proposed and evaluated to defend against stack-based buffer overflow attacks under Windows operating system and Intel 32-bit CPUs. A kernel device driver is designed to relocate the application's user-mode stack to the(More)
OBJECTIVE To observe effects of phytoestrogens quercetin (QC), Genistein (GEN), coumestrol (COM), and enterolactone (ENL) on gap junctional intercellular communication (GJIC) in HaCaT cells. METHODS HaCaT cells were exposed to QC, GEN, COM, and ENL at 0.1, 1.0, 10.0 and 100.0 micromol/L for 24 hours. The effects of phytoestrogens on GJIC were determined(More)