Time filter

Source Type

Lv Y.X.,Hebei Chemical and Pharmaceutical College
Applied Mechanics and Materials | Year: 2014

The network management system based on WEB has been becoming the current hot spots. The paper discusses the advantages and significance of WBM fully to discuss the possibility of a network management system based on JAVA implementation. Based on the SNMP protocol is proposed based on ARP protocol and network topology search found based on ICMP protocol and topology reconstruction. SNMP access to treatment and MIB information structure and based on the MIB information acquisition. Application server search and real time function and the realization of the corresponding technology such as network service monitoring method. And on the Linux platform, using TOMCAT as a JSP interpreter, information storage, publishing technology and by using XML and JAVA platform compatibility technology is verified to above ultimately proved: the network management system based on JAVA and XML can completely meet the requirements of network management has good feasibility and practical application value. © (2014) Trans Tech Publications, Switzerland. Source

Ren L.J.,Hebei Chemical and Pharmaceutical College
Key Engineering Materials | Year: 2011

Now, the industries such as chemical industry is develop rapidly, and the requirement for the chrome of O2 is higher and higher. In this situation, it is important to measure the oxygen density with a portable and exact measure device. This article makes some study on a device for measuring the oxygen density, focusing on the principle of the testing, and the hardware and the software of the device. It proved that the system can work well. © (2011) Trans Tech Publications, Switzerland. Source

Liu X.,Hebei University of Technology | Liu Y.,Hebei University of Technology | Liang Y.,Hebei Chemical and Pharmaceutical College | Liu H.,Hebei University of Technology | And 2 more authors.
Thin Solid Films | Year: 2011

The practical use of low dielectric constant materials as inter-layer dielectrics is driving the demand for copper chemical mechanical polishing (CMP) at low down pressure, which is a challenge for the traditional CMP technology. To solve this issue, it is necessary to develop a chemically dominant CMP process at low down pressure. The chemical oxidation and dissolution of the oxidized copper are more important than mechanical. In this paper, the ingredient and prescription of slurry is found, which is used to achieve high surface removal rates and certain Within-Wafer Non-Uniformity at a down pressure of 4.3 kPa. The CMP slurry contains silica sols, H2O2 and chelating agent. A model of copper CMP at low down pressure based on the methods of chemical kinetics and oxidation reaction is presented. The model prediction trends are consistent with the experimental data. © 2011 Elsevier Ltd. All rights reserved. Source

Jia L.,Hebei Normal University | Chu H.,Hebei Normal University | Wu D.,Hebei Normal University | Feng M.,Hebei Chemical and Pharmaceutical College | Zhao L.,Hebei Normal University
Plant Signaling and Behavior | Year: 2014

Nitric oxide (NO) and hydrogen peroxide (H2O2) are 2 key elements in heat shock (HS) signaling pathway. Our experiments indicate the existence of a cross talk among H2O2, NO, Ca2+ channels, and the activation of calmodulin (CaM) to stimulate the DNA-binding activity of HS transcription factors as well as the accumulation of HS proteins so as to confer thermotolerance. CaM can bind to target proteins to alter their function, acting as part of a calcium signal transduction pathway. However, only a few of its target proteins had been reported by now. Herein we are discussing them and conclude that in order to obtain a more profound understanding of CaM signaling, further research will be needed in the future. © 2014 Landes Bioscience. Source

Kong W.-N.,Hebei Normal University | Kong W.-N.,Hebei Chemical and Pharmaceutical College | Lei Y.-H.,Hebei Normal University | Chang Y.-Z.,Hebei Normal University
Expert Review of Hematology | Year: 2013

The daily iron absorption and loss are small and iron metabolism in human is characterized by a limited external exchange and by an efficient reutilization of iron from internal sources. The mononuclear phagocyte system (MPS) plays a key role in recycling iron from hemoglobin of senescent or damaged erythrocytes, which is important in maintaining iron homeostasis. Many iron-related proteins are expressed in the MPS, including heme oxygenase (HO) for heme degradation, the iron importer transferrin receptor 1 (TfR1) and divalent metal transport 1 (DMT1), the iron exporter ferroportin 1 (FPN1) and the iron regulatory hormone hepcidin. Insights into the regulatory mechanisms that control the regulation of iron metabolism proteins in the MPS will deepen our understanding about the molecular mechanism of iron homeostasis and iron-related diseases. © 2013 Informa UK Ltd. Source

Discover hidden collaborations