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As the results are shown in Fig. It is worth mentioning that Doi—Ohta theory is applied for some interesting scaling relationships such as: 1 It predicts constant viscosity despite of presence of interface in the system. So the extensive works have been carried out for viscoelastic and non 50—50 blends as indicated in the introduction.
In addition, Iza Conclusions et al. Using worked out for non-compatibilized blends. With careful SBR as compatibilizer, it was observed that composition insight, one may notice that the validity of these rela- tionships hold better with introducing compatibilizer so this motivated us, to investigate this model more exten- sively. In this study, all double start-up experiments were carried out with constant shear rates ratio set on 2: 0.
With comparison of Figs. On the other hand, by using compatibilizer the validity of the scaling law was improved as shown by Figs. Based on the theory assumptions, validity of this scaling law normally holds for non-compatibilized blend. How- ever, our results show the reverse behavior, i.
The origin of these phe- In addition, in the double start-up experiments, valid- nomena comes back to the morphology of the blends, so ity of Doi—Ohta scaling relationship has investigated. If reduction of the interfacial tension is much better and the curves superimpose onto each other.
This is more than reduction in the dispersed domains size, due to enhancement of continuity index of minor phase for where their ratio becomes greater than original non-compatibilized blends. It is Acknowledgements Authors acknowledge Dr. Yavarizadeh for GPC data. Polymer — coelastic emulsions with interfacial ten- suspension of force-free particles. Polymer — their blends. J Rheol Acta — diene blends. Mater Lett — compatibilization. Mac- mer J — ation of the Doi—Ohta theory for an romolecules — Taylor GI The formation of emul- immiscible polymer blend.
Iran Polym J — of block copolymer architecture on the polymer blends. The default state of the port is closed, which means that data traffic is disabled. The authenticator can open the port if this is authorized by the authentication server. Actually, the supplicant authenticates itself to the authentication server, and if this authentication is successful, then the authentication server grants access to the network by instructing the authenticator to open the port.
In case of WiFi networks, the supplicant is the mobile device and the authenticator is the AP. The authentication server is a process, which can run on the AP in case of smaller networks, or on a dedicated server machine in case of larger networks.
In WiFi, the port is not a physical connector, but a logical control implemented in software running on the AP. In a wired LAN, a device authenticates itself once, when it is physically connected to the network.
There is no need for further authentication at least for network access control purposes , because the port used by the device cannot be used by someone else; that would require to first disconnect the device that currently uses the port, which would be detected by the hardware of the authenticator, and the port would be disabled.
For this reason, The authentication procedure in Note that EAP is only a carrier protocol: it does not provide authentication services itself, but it can carry the messages of any higher layer authentication protocol.
That is why it is called extensible. The way how the higher layer protocol messages are embedded into EAP messages must be specified for each and every higher layer protocol. There are four message types in EAP: request, response, success, and failure. EAP request and response messages carry the messages of the embedded authentication protocol from the STA to the server, and from the server to the STA, respectively.
The EAP success and failure messages are used to signal the result of the authentication to the supplicant.
LIST OF RUBBER STANDARDS I. Indian Standards
As we indicated before, in This means, that in WiFi networks, the EAP protocol and the embedded higher layer authentication protocol are executed by the mobile device requesting access and the authentication server. The AP only relays messages without interpreting them. When it sees an EAP success message passing, it enables the port and lets the mobile device connect to the network. EAP messages between the AP and the authentication server can be carried by various protocols.
The protocol architecture that we have just described is illustrated in Figure 2. However, as authentication takes place between the mobile device and the authentication server, the session key is established between them too, and it must be securely transferred to the AP. The session key is transferred in encrypted form, where the encryption uses a long-term key shared by the AP and the authentication server. It is a pairwise key, because it is known only to that mobile device and the AP and the authentication server, but it is considered to be a trusted entity , and it is a master key, because it is not used directly for encryption or integrity protection of messages, but it is used to derive encryption and integrity keys.
More precisely, both the mobile device and the AP derives four keys from the PMK: a data-encryption key, a data-integrity key, a key-encryption key, and a key-integrity key. These four keys together are called pairwise transient key PTK.
This is illustrated in Figure 3. This protocol also provides evidence to each party that the other party possesses the PMK. The contents of the messages and the operation of the four-way handshake protocol are described as follows: 1. First, the AP sends its random number to the mobile device. When the random number is received by the mobile device, it has everything needed to the derivation of the PTK. Hence, the mobile device computes the PTK.
The mobile device sends its random number to the AP. This message also contains the starting value of a sequence number that will be used to number further data packets, and hence, to detect replay attacks. This message also signals to the mobile device that the AP has installed the keys and it is ready for encrypting all subsequent data packets. Finally, the mobile device acknowledges the reception of the third message. This acknowledgement also means that the mobile device is ready for encrypting all subsequent data packets.
Part II First Revision.
Methods of test for rubber latex. Determination of pH. IS Part V Methods of test for rubber latex. Determination of total copper.
Determination of Part VI total manganese. IS Part IX 9 IS Specification for pillows, air. IS Specification for mattress, air. IS Specification for rubber seed cake as livestock feed. IS Specification for shoe adhesive, natural rubber latex base. IS Specification for rubber seed oil. IS Methods of test for polybutadiene rubbers. Determination of ash. IS Part IV. Determination of CIS, trans and vinyl structure. Part IV Methods of test for polybutadiene rubbers.
Determination of gel content. IS black. Method for determination of asphaltenes in bitumen by IS precipitation with normal heptane.
Specification for rubber hawai chappal. IS Rubber hawai chappal-specification.
Ejecucion Estruct Acero I
IS Specification for electrically bonded road and rail tanker hose IS of rubber, resistant to petroleum products. Specification for flexible rubber tubing for liquefied petroleum IS gas. Specification for pneumatic tyres for automotive vehicles.
IS II. Truck, bus and light truck tyres- Diagonal ply. IS Automotive vehicles- Pneumatic tyres- Specification. Part II Truck, bus and light truck tyres- diagonal ply. Passenger car tyres. Tyres for scooters and scooter derivatives. Part III Specification for pneumatic tyres for automotive vehicles. Method of test for diagonal ply tyres. IS Part IV Part V 10 IS Specification for double centrifuged natural rubber latex. IS Recommendations for storage and handling of inner tubes, IS tube valves and flaps for use with pneumatic tyres for automotive vehicles.
IS Specification for moulded rubberized coir cushioning. IS Specification for rubber gaskets. IS Recommendations for storage and handling of pneumatic tyres for automotive vehicles.
IS Specification for styrene-butadiene rubber latex. IS Specification for rubber rollers for offset printing. Part 1 Methods of test for synthetic rubber. IS antioxidants. Rubber tapping tools- Coagulation Tray-Specification. IS Rubber or plastics hoses and tubing- Bending tests. ISO ; Rubber and plastics hoses- Sub-ambient temperature flexibility IS tests. Dimensional requirements of rubber gaskets for mechanical ISO ; joints and push-on joints for use with cast iron pipes and fittings for carrying water, gas and sewage.
IS Automotive vehicles- Braking systems, rubber boots for brake IS wheel cylinders-Performance requirements. IS Natural rubber latex, creamed, ammonia preserved IS Specification. IS Brush, rubber squeezer, with handle- Specification. IS Disposable surgical rubber gloves- Specification. Rubber-Standard temperatures, humidities and times for the conditioning and time interval between vulcanization and testing of test pieces. IS Unlined moulded rubber boots- Specification.
IS On-site non-mechanical jointing of piled textile reinforced Part 1 rubber conveyor belting-Code of practice. Hot vulcanizing.
IS On-site non-mechanical jointing of piled textile reinforced Part 2 rubber conveyor belting-Code of practice. Cold vulcanizing. IS Rubber threads-Specification.
Styrene-butadiene rubber SBR -Emulsion- and solution IS polymerized types- Evaluation procedures. IS Preservative treated and seasoned sawn timber from rubber wood- Hevea brasiliensis -Specification. IS Safety, protective and occupational footwear for professional use. Requirements and test methods.
Specification for safety footwear. Specification for protective footwear. Specification for occupational footwear. Additional requirements and test methods. Additional specification for safety footwear. ISO ; Safety, protective and occupational footwear for professional use.
Additional specification for protective footwear. Additional specification for occupational ISO ; footwear. IS Guidelines. Polymer and rubber modified bitumen- Specification.
BS Specification for rubber gloves for electrical purposes. BS Methods of testing vulcanized rubber. Part A1. Part A 1 Determination of density. Part A 2.
Part A 2 Determination of tensile stress-strain properties. Part A 3. Part A3 Determination of tear strength. Trouser, angle and ISO 34; crescent test pieces. BS Physical testing of rubber. Part A 5. Rubber vulcanized or Part A 5 thermoplastic- Determination of tension set at normal and ISO ; high temperatures.
Part A 6. Part A6 Determination of compression set. Part A 9.
Part A 9 Determination of abrasion resistance. Part A Part A 10 Determination of flex cracking De Mattia. Part A 11 Determination of resistance to crack growth. Parts A Part A 13 Determination of stiffness at low temperature Gehman test. Part A 14 Determination of modulus in shear of rubber. Bonded quadruple shear test piece. Part A 15 Determination of creep. Methods of testing vulcanized rubber. BS Determination of swelling in liquids. Part A 17 Determination of the permeability of rubber to gases.
Constant volume method. Part A 18 Part A Determination of equilibrium water vapour absorption. BS Methods of testing vulcanised rubber. Part A. AcceleratedPart A 19 ageing tests. Determination ofBS rubber to metal bond strength. Section ISO , Part A Determination ofPart A 21 rubber to metal bond strength.
Two plateSection Part A 23 Determination of resistance to ozone cracking under static conditions. BS Methods of testing vulcanized. Dynamic testingPart A 24 of vulcanized rubber. Part A 25 Determination of impact brittleness temperature.
Part A 26 Determination of hardness. BS determination of rubber-to-fabric adhesion. Direct Part A 27 tension.
BS Determination of adhesion of vulcanized rubber to rigid Part A 28 plates in shear. Quadruple shear test. BS Determination of low-temperature retraction TR test.
Part A 29 Physical testing of rubber. Determination of tendency to adhere to and to corrode metals. BS Part A 37 14 DeterminationPart A 43 of resistance to ozone cracking. Static strain test. Part A 44 Determination of resistance to ozone cracking. Part A 46 Determination of vapour transmission rate of volatile liquids through rubber sheet and rubber coated fabrics. AnalysisPart A 47 of multi-peak traces obtained in determinations of tear ISO ; strength and adhesion strength.
Basic principles. Parts B 1 to B5. Parts B 1 -B 5 Preparation of material and extraction methods. Parts B 6 to B Parts B 6- B 10 Determination of sulphur. Part B Part B 13 Determination of ash and zinc oxide. Part B 14 Determination of carbon black. Part B Part B 15 Determination of manganese. Part B16 Determination of antimony. Part B 17 Determination of total copper. Part B 19 Preparation and examination of water extract. Part C 1. Part C 1 Determination of surface resistivity of insulating soft vulcanized rubber and ebonite.
Part C 3. Part C 3 Determination of permittivity and power factor. Part C 4. Part C 4 Determination of electric strength of insulating soft vulcanized rubber and ebonite. Parts D 1 and D 2. Parts D 1- D 2 Determination of plastic yield of ebonite. Part D 3. BS Determination of crushing strength of ebonite.
Part D 3 Methods of testing vulcanized rubber. Part D 4. Part D 5. Part D4 Determination of tensile strength of ebonite. Part D 6. Part D 7. Part D 6 Determination of impact strength of ebonite. Parts E1 to E6. BS Methods of testing cellular ebonite.
Part D 7 Methods of testing vulcanized rubber. Methods of testing soft cellular rubber. Parts E 1 - E6 Methods of testing rubber proofed fabric.
Rubber mats for electrical purposes.
BS Specification for natural rubber compounds High quality. Parts F 1 - F 9 Specification for natural rubber compounds High quality BS for extrusion. Parts G 1 - G 9 Methods of testing rubber latex. Sampling and basic tests. BS Methods of testing rubber latex. Chemical and BS physical tests. Methods of testing natural rubber latices.
BS Methods- Testing raw rubber and unvulcanized BS compounded rubber. Sampling and further Part 1 preparative procedures. Chemical analysis of raw Part 2 natural rubber. Part 3. Methods of physical testing. Evaluation of Part 1 vulcanizing characteristics. Part 5. Analysis of styrene- Part 2 butadiene copolymers. Section 5. Bound styrene content. BS Part Analysis of styrene-butadiene copolymers SBR. BS Section 5. Solvent extract.
Total ash. Determination of organic BS acid, soap and solvent extract. Determination of limiting BS viscosity number of raw rubbers.Methods of sampling and test for carbon black. ISO StandardsSl. IS Specification for shoe adhesive, natural rubber latex base.
When the random number is received by the mobile device, it has everything needed to the derivation of the PTK. IS Specification for oil and solvent resisting hose of rubber with woven reinforcement. IS Methods of test for tyre yarns, cords and tyre cord fabrics