The introduction of one acetyl group into the chymotrypsin molecule by reaction with p-nitrophenyl acetate gives rise to an enzymatically inactive monoacetylated protein that rapidly loses its acetyl group and becomes active again in solutions of dilute alkali or primary alcohols." 2 On the other hand, the well-known polyacetylation of proteins with acetic anhydride, as described by Fraenkel-Co...

brucella melitensis and brucella abortus are of the most important causes of brucellosis, an infectious disease which is transmitted either directly or indirectly including consuming unpasteurized dairy products. both strains are considered endemic in iran. common diagnostic methods such as bacteriologic cultures are difficult and time consuming regarding the bacteria. the aim of this study was...

Cigarette smoking is growing and nicotine is considered as the most adverse agent in the cigarette smoking. Nicotine is an alkaloid and forms 90% of alkaloids of cigarette. Nicotine is accountable for creating disorders and cancers such as lung cancer, heart disease and chronic lung disease. Nicotine can be considered as an autophagy and apoptosis inducer which can either directly or indirectly...

Escherichia coli O157:H7 is found in cattle farms and can live in the intestine of healthy cattle. Mostcases of human illnesses including nonbloody diarrhea, hemorrhagic colitis and hemolytic uremic syndromecan be traced, either directly or indirectly, to cattle. One strategy for reducing the risk of EnterohemorrhagicEscherichia coli (EHEC) infections in human is to reduce the prevalence of inf...

Academic achievement is a function of many factors among which the school entry age has been controversial. Although the impact of the age factor is rather obvious, its effect is mediated by factors such a spiritual intelligence, social skills, and creativity. In order to devise a structural model by which the academic achievement can be predicted, a sample of 250 female 10th graders was select...

  Brucella melitensis and Brucella abortus are of the most important causes of brucellosis, an infectious disease which is transmitted either directly or indirectly including consuming unpasteurized dairy products. Both strains are considered endemic in Iran. Common diagnostic methods such as bacteriologic cultures are difficult and time consuming regarding the bacteria. The aim of this study w...

Cigarette smoking is growing and nicotine is considered as the most adverse agent in the cigarette smoking. Nicotine is an alkaloid and forms 90% of alkaloids of cigarette. Nicotine is accountable for creating disorders and cancers such as lung cancer, heart disease and chronic lung disease. Nicotine can be considered as an autophagy and apoptosis inducer which can either directly or indirectly...

Literature and Language Learning in the EFL Classroomconsists of nineteenchapters. The chapters of the book have been arranged into two parts: Part I, current issues and suggestions for new approaches (Chapters 1-6) and Part II, empirical and case studies (Chapters 7-19). The book takes multiple approaches to examine how literary texts can be incorporated into teaching practices inan EFLclassro...

changes in groundwater quality, is caused destruction of other resources, either directly or indirectly, due to bad management of groundwater extractions. considering the importance of groundwater resources, especially in arid and semiarid regions, this research was done to modeling the spatial distribution of some groundwater qualitative factors with emphasis on drinking using geostatistical m...