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One of the most interesting methods to develop novel rheological and textural properties in food formulation is the application of hydrocolloid blends. In this study, properties of tragacanth gum blends with qodoumeshirazi, farsi and locust bean gums were evaluated. By this purpose initially the rheological behavior of tragacanth, qodoumeshirazi, farsi and locust bean gums were evaluated individually at 0.2% total gum concentration. Further, the rheological behavior of tragacanth gum blend with the mentioned gums in ratios of 20:80, 40:60, 60:40 and 80:20 were investigated between 1.32 and 165 s^-1 shear rates. Power law and Herschel-Bulkley models were used to described their rheological behavior.These results showed that all solutions had pseudoplasticbehavior. Among the individual gum solutions,qodoumeshirazi showed by itself yield stress. The consistency coefficient of tragacanth gum was considerably higher than other gums. The apparent viscosities of blend solutions of tragacanth- locust bean gums and tragacanth-farsi gums in the ratio of 20:80 were higher than individual gums, which revealed the existence of synergism between these groups of gums. Since,farsi, qodoumeshirazi and locust bean gums are cheaper than tragacanth gum; it is possible to have cheaper formulation by using them instead oftragacanth gum.

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Under normal circumstances, security and freedom as two human rights must be established in every society in order to protect human values ​​and principles; But in the face of terrorism emergencies, governments may be challenged to combine the two human rights of freedom and security. The predominant approach adopted by countries is a security-oriented approach. This paper first examines the laws and judgments of the United Kingdom, France, and the United States, and explains that governments often ignore freedom of expression in these circumstances. In contrast, there is a freedom-oriented approach that in the face of terrorism with the establishment of freedom, security to some extent ignores this approach and this approach due to the desire for a security-oriented approach by governments can not be adopted by governments and only historical aspects of this approach can be adopted. Found by governments. Finally, further investigation in this regard can lead to the conclusion that in balancing security and freedom, moderation can be maintained and, in times of emergency caused by terrorism, restrictive human rights can be restricted as much as possible; In such a way that neither of the two human rights of security and freedom is violated under the pretext of establishing another.