Archaea occupy a considerable diversity of niches encompassing extreme environments with extreme of pH, salinity and temperature that cannot be tolerated by other forms of life. Survival and colonisation requires the capacity to sense, and adapt to environmental change. In this review we consider the issues of adaptation to environmental stresses, in particular the mechanisms that might be empl...

an epoxy resin was modified by silica nanoparticles and cured with an anhydride. the particles with different batches of 12, 20, and 40 nm sizes were each distributed into the epoxy resin ultrasonically. electron microscopy images showed that the silica particles were well dispersed throughout the resin. tensile test results showed that young’s modulus and tensile strength increased with the vo...

in russia (formerly ussr) study of biomodulation action (bma) mechanisms of low-intensity laser irradiation (lili) began in 1964, immediately after the development of lasers. during the period from 1965 to 1972 several dozens of scientific conferences were held, hundreds of studies were published. generally, secondary mechanisms and results of lili effect on patients with various diseases were ...

in the present study, the potential of a bacterial consortium of enterobacter cloacae and pseudomonas sp. (ercppi-2) for microbial enhanced oil recovery was investigated. various mechanisms of enhanced oil recovery (eor) as a result of using ercppi-2 and its metabolic products were studied in detail. the obtained results showed that under simulated reservoir conditions, interfacial tension redu...

objective: this study aimed to compare irrational beliefs, defense mechanisms and marital satisfaction in fertile and  infertile women. materials and methods: this study was a causal comparative survey performed on 30 fertile and 30 infertile women chosen by available and simple random sampling out of the whole clients referred to vali-e-asr reproductive health research center from february 200...

fibrosis is the pathological condition resulting in the growth of excess fibrous connective tissue in an organ or body system as a reparative or reactive process. in the field of clinical pathology, clinicians and medical scientists are endeavoring to translate experimental knowledge into effective, innovative treatments for a range of fibrotic conditions. the amelioration of whole organ functi...

objective: the main purpose of present research was to identify strategic factors influencing to the development of digital libraries in iran.method: research method of this study is grounded theory, which we use systematic method. the study sample consisted of professionals and experts in the field of digital library, and semi-structured interviews used to collect data to achieve theoretical s...