Gas storage fields have numerous wells that are used for both injection during low demand periods and withdrawal during high demand periods. As these wells age, their deliverability declines due to several factors. Stimulation treatments (hydraulic fracturing of the formation) are routinely used in gas industry to improve gas well productivity. This study was conducted on a large natural gas st...

1 General Introduction A key to the realization of effective microwave tunable devices, among others, is to develop adaptive materials with superior adjustability of electromagnetic parameters. Since there are two fundamental electromagnetic parameters, namely, permittivity and permeability, the tunable property can then be readily approached by manipulating (i) permittivity directly via the el...

The paper by Jenkins et al. (6) provides interesting data on Cryptosporidium parvum oocyst permeability and survival. The vital dye assay (4) relies upon oocyst permeability and exhibits limitations, especially in assessment of disinfectant efficacy (3). However, it is rewarding to note that it is considered to have utility and can provide pertinent data. Although we agree with many points addr...

The paper by Jenkins et al. (6) provides interesting data on Cryptosporidium parvum oocyst permeability and survival. The vital dye assay (4) relies upon oocyst permeability and exhibits limitations, especially in assessment of disinfectant efficacy (3). However, it is rewarding to note that it is considered to have utility and can provide pertinent data. Although we agree with many points addr...

The paper by Jenkins et al. (6) provides interesting data on Cryptosporidium parvum oocyst permeability and survival. The vital dye assay (4) relies upon oocyst permeability and exhibits limitations, especially in assessment of disinfectant efficacy (3). However, it is rewarding to note that it is considered to have utility and can provide pertinent data. Although we agree with many points addr...

the aim of this study was to examine the relationship between coaching self-efficacy and iran premier league wrestlers' sport commitment. the research method was descriptive-correlation. the wrestlers from 8 teams (n=120) including all wrestlers in iran premier league (2012) completed demographic questionnaire, coaching self-efficacy scale (feltz et al., 1999), and sport commitment questio...

As a method to reduce atmospheric emissions of carbon dioxide (CO2), this greenhouse gas can be separated at large point-sources, compressed and injected into geological formations such as saline aquifers. Several physical features of the fluids and the rock sequester the CO2 in the pores of the rock for geologic time-scales. One such feature is dissolution into the brine, which increases the d...

how to cite this article: schulz a, kohlschütter a. ncl disorders: frequent causes of childhood dementia. iran j child neurol. 2013 winter;7(1):1-8. abstract dementia in children or young adults is most frequently caused by neuronal ceroidlipofuscinoses (ncl), a group of incurable lysosomal storage disorders linked by the accumulation of a characteristic intracellular storage material and progr...