in this work, we studied the effect of carboxylic acid on the rheological properties of a high-alumina cement mortar (ch45) produced by the algerian firm refractal.the investigated properties are setting time, water consumption, electrical conductivity, ph, density and the compressive strength. the results show a setting time of about 200 min for the acid free, 180 min with 0.1 % of carboxylic ...

objective: in aug 2004, for the first time, a psychiatric osce was piloted in iran. the objective of current study was to explore the view and opinion of both candidates and examiners after they took part in the exam. method: two focus groups were formed. there were 10 participants in each group. each group was asked to discuss the advantages and disadvantages of the osce. the discussion was ta...

it has been shown that geopolymerization can transform a wide range of waste aluminosilicate materials into building materials with excellent chemical and physical properties such as fire and acid resistance. in this research work, geopolymerization of construction waste materials with different alkali-activators based on combinations of na2sio3 and naoh has been investigated. a number of syste...

patients and methods in 382 subjects admitted in the emergency department (ed), we evaluated maximal (volmax) and minimal (volmin) la volumes and la emptying fraction (la-ef), from rt-3d images, with a semiautomated border detection program. a follow-up was performed in order to evaluate all-cause mortality and new hospital admission for cardiovascular events. objectives aims of this study were...

background different strategies for addressing the challenge of prioritizing elective patients efficiently and fairly have been introduced in norway. in the time period studied, there were three possible outcomes for elective patients that had been through the process of priority setting: (i) high priority with assigned individual maximum waiting time; (ii) low priority without a maximum waiti...

Informed consent is increasingly heralded as an ethical panacea, a tool to counter autocratic and paternalistic medical practices. Debate about the implementation of informed consent is constricted and polarised, centring on the right of individuals to be fully informed and to freely choose versus an autocratic, paternalistic practice that negates individual choice. A bioethical framework, base...

This article develops a method to estimate the impact of change in a particular social setting, the residential neighborhood, that is designed to address nonrandom selection into a neighborhood and nonrandom selection out of a neighborhood. Utilizing matching to confront selection into neighborhood environments and instrumental variables to confront selection out of changing neighborhoods, the ...

ackground: When individual judgment conflicts with a group, the individual will often conform his judgment to that of the group. onformity might arise at an executive level of decision making, or it might arise because the social setting alters the individual’s erception of the world. ethods: We used functional magnetic resonance imaging and a task of mental rotation in the context of peer pres...