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This research was designed to study the effect of water and alcoholic crude extracts of Agaricus bisporus in vivo. Therapeutic effect of both extracts was studied in murine mammary adenocarc- inoma- implanted mice after(I.P) administration of watery extract at concentrations of (333.3, 500, 666.6 mg/kg) and alcoholic extract atconcentrations of (500, 1000, 1500 mg/kg) for 30 days alternatively.The results revealed significant reduction in the tumor volume weather in those treated with watery extract 87.10%, orthose treated with alcoholic extract 87.98%, particularly at the concentration of 666.6 mg/kg and 500 mg/kg respectively.Histopathological study showed necrosis and infiltration of inflammatory cells within fibrous encapsulated tumormass.

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In this paper, the neural network (NN) is used tocontrol the remote IP address that related to user device.When the IP address assigned carefully and controlled bya novel tool, the work performance and service qualitywill be better. The input for the NN determineddepending on the repeated problem in recent networksand the available parameters which are in the main servernode. The training process done by determining therequired training function and activation function for allneurons in the NN. The performance of the proposedmethod was (1*10-20) or less in more cases and the errorof the learning process is nearly (1*10-6). In addition to IPaddress control, the proposed method is a good manner tooptimize the security issue by specializing an IP addressfor a given user that can't be used by other device.Finally, the NN subject the produced IP address for thegiven users for test and validation which reached to thegoal at smallest time (~0.0001s) and little number ofiteration (9 - 20) epoch.

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:This paper is developed to study the compression performance of video by using searching method of motion estimation OTS and SNR scalable coding to enhance the quality of video sample. The work evaluates set of suitable objectives fidelity measures, such as MSE, PSNR and CR. The model of video coding system is designed to treat the video signal as a CBR and implemented for different video samples rates. The two major components inter and intra frames compression is achieved as an optimal compensation for both quality and CBR. In the same time the basic structure of communication networks which is represented by the Transmission Control Protocol/Internet Protocol (TCP/IP) model is taken into consideration within the system BER control. The developed system is implemented using Visual Basic Language (ver 6.0) under Windows Xp operation systems

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Considered the MPLS network is the future for all the needs and applications of networks and most efficient .With the development of companies and organizations to keep pace with the ever-changing business climate, companies’ networking needs are becoming more dynamic. Their networks must be able to transfer sophisticated applications quickly and efficiently while minimizing costs. MPLS is a technology that can be very beneficial to companies and this paper outlines what MPLS is, the benefits that MPLS delivers and how MPLS can satisfy companies -networking requirements. But the problem is when they went all the companies and service providers to the Internet Protocol IP, it has become important to find a more efficient way approve of this type of approach, MPLS simplifies the network infrastructure by allowing the improvement of multiple technologies and applications such as voice, video and data. MPLS provides enhanced security & high availability through the below-mentioned theories & analysis we can see that the MPLS is faster than traditional routing technique. If we can improve hardware facilities and software platform by real-time routers then we can notice the significant difference. This is indicated by the work paper from improving the performance of data transfer to ensure confidentiality and speed of transfer.

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In this work, a new key exchange protocol for IP-based mobile networks is introduced. This protocol is called KEPSOM (Key Exchange Protocol Supporting Mobility and Multihoming). The goals of designing KEPSOM are to develop key exchange protocol proposal characterized by its secrecy, simplicity, efficiency, resistivity, and its ability to support mobility and multihoming. The protocol requires only two roundtrips. The design limits the private information revealed by the initiator. An old security association (SA) can be replaced with a new one by rekeying without the need of restarting the protocol with a new session. On the other hand, the changes in IP address due to mobility or multihoming need not to restart the protocol with a new SA session. The proposed protocol can also support key exchange in hybrid wireless network, in which the mobile node can operate in both Ad Hoc and Base Station-oriented wireless network environments using different transmission modes. KEPSOM has been analyzed and proven secure. Several tests have been done to measure and evaluate the performance of the protocol. In these tests, it is found that the required time for rekeying is about 27% of the total required time for exchanging the keys. And the required time to detect and update the change in IP address, which may occur due to mobility or multihoming, is less than 10% of the total required time to establish a new SA sessions.

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Abstract:Industrial Ethernet is a new trend in technology designed to replace the traditionalindustrial solutions such as point to point and field bus systems. This paper studiesIndustrial Ethernet performance under different circumstances using the network simulationpackage(OPNET). Firstly, a validation procedure to the use of OPNET in simulating suchnetworks was made by comparing OPNET performance with practical experiments onceand then with analytical models results. Then OPNET was used to study the effect ofdifferent parameters on the real time performance of the network. It was found that someparameters like (packet length, number of nodes and packet production rate) have minoreffect on the network performance, while the others (packets processing rate and FTPtraffic transferred to an industrial node) could affect seriously on the network behavior.Keywords: Industrial Ethernet , OPNET , Field bus , TCP/IP

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Variable-Length Subnet Masks (VLSM), often referred to as "subnetting a subnet", is used to maximize addressing efficiency. The network administrator is able to use a long mask on networks with few hosts, and a short mask on subnets with many hosts. This addressing scheme allows growth and does not involve wasting addresses. VLSM gives a way of subnetting a network with minimal loses of IP addresses for a specific range.Unfortunately, the network administrator has to perform several mathematical steps (or use charts) to get the required results from VLSM.In this paper, a simple graph simulator is proposed (using Visual Basic 6.0 Language) to perform all the required mathematical steps and to display the obtained required information (the subnet ID, broadcast ID, usable addresses for sub networks and others). The simulator also includes the ability to draw a suggested network topology that matches the entries. The implementation of the simulation required only very few entries (IP, prefix and number of subnets).This simulator is useful for students, instructors, and network engineers to analysis and design a VLSM network by providing all required information in simple, fast and easy steps. Moreover, the software draws a full detailed suggested network topology which is considered a helpful tool for the network administrator that he should have.

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Multicast communications and as expected it is an effective way to send information to the largest possible number of receivers. IP multicast has several technical problems to be resolved until it is widely deployed in the Internet. These includes service model of multicast group, reliable transport, security and congestion control. In this paper, we describes the benefits of multicasting and how it can works in local area Network that connected via any server, the Class D addressing from 244.0.0.0 to 239.255.255.255 reserved for internet multicast communication to make connection between many host in the network. A prototype Multicast Chat System (MCS) has been developed to test the capability and suitability of multicasting. The prototype was developed using the Java language. The benefit for this prototype is multi diverse users can be connected without necessary needs for an Internet or Web-server, and thispaper describes the overall work for IP multicast for advantage and disadvantage based on chatting process and simple security algorithm

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Took the research related to the use and development of speech and voice conversations that occur across the international network occupy the attention of researchers during the recent what this field is of great importance compared to fields that are interested correspondence voice of pressure or other methods. Considered all the systems that are used for the purpose of voice chat systems are important, so for frequent use at the present time. The enormous development and technological progress in the field of information security audio make these systems spread widely and become commonly used. In the proposed research, will be addressed to all the concepts and key elements of the systems, voice conversations. Also will be recognized by all the information and security secrets to the most prevalent of these systems. A set of comparisons as well as the results have been reached, then search addresses the major components that make up the basis of the VoIP, finally will recognize some current commercial operating systems and scale differentiation between the system and another

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LAN Chat Messenger using TCP/IP offers reliability, security and zero cost communication among staff members of a company. As well, this study offers file transfer. It helps to solve the communication problems that related to time and cost. The proposed protocol facilitates information exchange among individuals by providing many communication options. It is a standalone application using JAVA as the programming language and tested at LANs of our institute (college's Labs networks).

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