Soil residual N is a potential factor threatening the environment, but it also an fertilizer resource. Few studies have evaluated fate of soil under agronomic practice. The objective this study was to investigate distribution and its possible influencing factors with different irrigation regimes. Under three situations created by previous season using 15N labeled urea, we employed lettuce as pl...

In this work, we make use of a supervised machine learning algorithm based on Logistic Regression (LR) to select TeV blazar candidates from the 4FGL-DR2 / 4LAC-DR2, 3FHL, 3HSP, and 2BIGB catalogs. LR constructs hyperplane selection optimal parameters, named features, hyper-parameters whose values control process determine features that ends up learning, discriminate blazars non-TeV blazars. add...

ulcerative colitis (uc) is a nonspecific acute and chronic inflammatory bowel disease that diffusely involves the colonic mucosa. the etiology of uc has not yet been elucidated fully. however, many studies have found that immunologic disorders may play a role in the pathogenesis of uc. in addition, due to an increased frequency of uc in families, especially an increased monozygotic compared wit...

A stronger association has been found between multiple sclerosis and HLA-DR2 than -DQwl in south east Wales (prevalence c 113/10(5)) in contrast to recent observations in north east Scotland (prevalence 178/10(5). The complex relationship between the HLA system and multiple sclerosis, demonstrated in this and other studies, is explained more easily under a polygenic model of inheritance, in whi...

We apply the spectroscopy-based stellar-color regression (SCR) method to perform an accurate photometric re-calibration of second data release from SkyMapper Southern Survey (SMSS DR2). From comparison with a sample over 200,000 dwarf stars stellar atmospheric parameters taken GALAH+ DR3 and accurate, homogeneous photometry $Gaia$ DR2, zero-point offsets are detected in original catalog SMSS pa...

Abstract In a previous paper, we applied the Gaia DR2 catalog to improve astrometric accuracy of about 1.7 billion objects in Pan-STARRS1 Data Release 2 (PS1 DR2). We report here on further improvements made by utilizing EDR3 and correcting for effects differential chromatic refraction (DCR) decl. extend correction algorithm Paper I iteratively subtracting color- decl.-dependent PS1/Gaia residu...