BACKGROUND Both Peak Oxygen Uptake (peak VO2), from cardiopulmonary exercise testing (CPET) and the distance walked during a Six-Minute Walk Test (6 MWD) are used for following the natural history of various diseases, timing of procedures such as transplantation and for assessing the response to therapeutic interventions. However, their relationship has not been clearly defined. METHODS We de...

As soil stability is a complex phenomenon, various methods and indexes were introduced to assess the strength of soils. Because limitations different (including wet sieving-based), we aimed presents relative index (RI) that was based on estimated components overall disruptive characteristic curve (SODC): (1) disruption constant (Ki, upon dispersion energy soils); (2) resulting change in mean we...

Soil organic carbon has been the most important soil quality measurement factors and has intense relation with soil physical, chemical and biological characteristics. Organic matter and its components are important factors of soil aggregates constitution and stability and play significant role in its structure.So, this research has been done for achieving this purpose. This area is arounding sa...

BACKGROUND The maximal walking distance (MWD) performed on a treadmill test remains the "gold standard" in estimating the walking capacity of patients who have peripheral arterial disease with intermittent claudication, although treadmills are not accessible to most physicians. We hypothesized that global positioning system (GPS) recordings could monitor community-based outdoor walking and prov...

the location of extracellular enzyme activities in soil aggregates can be influenced by slope position. this study aims to determine the effect of slope position on aggregate distribution of organic c and l-glutaminase activity. the soils were collected from different slope positions (shoulder, backslope, footslope and toeslope) at two pasture ecosystems (fereydoonshahr and chelgerd, central ir...

Polyacrylamide (PAM) is a water-soluble polymer with strong cohesiveness and water absorption capacity, it has been widely used to modify soil structural stability. However, little information available on the impact of PAM application aggregate-breaking process purple soils in hilly areas southwestern China. Therefore, current study aimed examine influence aggregate stability terms different b...

Despite their potential benefits, cover crops in vineyards under to Mediterranean climate conditions are still not widespread, especially the vine row. This under-vine space is normally kept weed-free through application of herbicides and/or tillage. In this work, we evaluate effect a Trifolium fragiferum L. crop (UV) on soil quality, as reflected by variety physical, chemical, and biological i...