Abstract Over the last fifty years, most of the semi-arid rangeland in Iran has been converted to cropland without an equivalent reduction in grazing animals. This shift has led to heavy grazing pressure on rangeland vegetation. The present study has been conducted in Sisab Research Station in the North Khorasan Province to evaluate effects of long-term grazing exclosures on biodiversity of ra...

Minimizing runoff losses from grasslands may benefit the producer and abate potential eutrophication of aquatic systems. This study was conducted to evaluate the effects of fertilizer source and soil aeration on the volume and quality of runoff from grassed plots. Sixteen tall fescue [Festuca arundinacea Schreb.]–bermudagrass [Cynodon dactylon L.] plots were established on Altavista sandy-loam ...

the aim of this study was to assess the regional effects of fire on the surface cover and forage production of mountainous rangelands of delfan county, lorestan province, iran. the fire took placed in june 2007 with significant effects on the vegetation characteristics in the study area. four fire affected sites were selected for sampling and a close area without fire was considered as control....

BACKGROUND Total elbow arthroplasty is not commonly used in young patients with advanced arthritis because of concerns regarding implant loosening and clinical failure. Until now, to our knowledge, there have only been a few studies on the outcome in younger patients undergoing total elbow arthroplasty. METHODS Twenty-three elbows in patients forty years of age or younger who underwent total ...

The Institute for Quality and Efficiency in Health Care (IQWiG) developed-in a consultation process with an international expert panel-the efficiency frontier (EF) approach to satisfy a range of legal requirements for economic evaluation in Germany's statutory health insurance system. The EF approach is distinctly different from other health economic approaches. Here, we evaluate established to...

This study conducted during the season 2017 at ED-Duem Locality which is laid Northern White Nile State of Sudan, main objectives this was measurement, listing all acacia raddiana tree sites their assessed physical characteristics height, diameter breast height and were account abundance, dominance, survival % natural regeneration as species. The researcher used systematic circular sam...

The pyruvate and NADH concentrations and the buffer pH which gave maximal activity with LDH isoenzymes derived from human heart and liver tissue were established for the temperatures 25°C, 30°C, 35°C, 37°C, 40°C, 45°C, and 50°C. The velocities of the LDH isoenzymes using these maximal assay conditions were used to obtain Arrhenius plots, i.e. log initial velocity against inverse absolute temper...