background: the most appropriate route of tranexamic acid administration is controversial. in the current study, we compared the efficacy of intravenous (iv) and topical intra-articular tranexamic acid in reducing blood loss and transfusion rate in patients who underwent primary total knee arthroplasty. methods: one hundred twenty 120 patients were scheduled to undergo primary total knee arthro...

In static experiments, we studied the effects of nitrate and nitrite solutions on newly hatched larvae of five species of amphibians, namely Rana pretiosa, Rana aurora, Bufo boreas, Hyla regilla, and Ambystoma gracile. When nitrate or nitrite ions were added to the water, some larvae of some species reduced feeding activity, swam less vigorously, showed disequilibrium and paralysis, suffered ab...

a Department of Geography, University of Sheffield, Winter St., Sheffield S10 2TN, UK 3 4 b British Geological Survey, Keyworth, Nottingham NG12 5GG, UK 5 6 Abstract 7 Natural environmental isotopes of nitrate and ammonium are used in conjunction with major 8 ion chemistry and hydrological data to establish controls upon the biogeochemical cycling of 9 nitrogen beneath a High Arctic polythermal...

carcass yield is important economical parameters for producers and contributors of meat science. in the present study, carcass yield and also the weight losses resulted post mortem until consumption were investigated. the mean values of cold carcass and hot carcass weight were 15.63 and 15.33, the mean value of cooling loss was 1.87% and average value of hot and cold efficiency were 41.44% and ...

the doubly fed induction generator (dfig) is one of the most popular technologies used in wind power systems. with the growing use of dfigs and increasing power system dependence on them in recent years, protecting of these generators against internal faults is more considered. loss of excitation (loe) event is among the most frequent failures in electric generators. however, loe detection stud...