A portable apparatus for the separation of krypton from environmental air samples was tested. The apparatus is based on the cryogenic trapping of gases at liquid nitrogen temperature followed by controlled releases at higher temperatures. The setup consists of a liquid nitrogen trap for the removal of H(2)O and CO(2), followed by charcoal-filled coils that sequentially collect and release krypt...

in the present experiment, the effects of nitrogen and phosphor fertilizer application in two methods of furrow and trickle irrigation on the yield and quality of sugar beet seed cultivar 7233 were studied. the experiment was conducted as a split factorial in a completely randomized block design with three replications during 2003 and 2004 in hamedan province. main plots were allocated to irrig...

Editor—We read with great interest the recent article by Peyton and colleagues1Peyton J. Park R. Staffa S.J. et al.PeDI Collaborative InvestigatorsA comparison of videolaryngoscopy using standard blades or non-standard in children Paediatric Difficult Intubation Registry.Br J Anaesth. 2021; 126: 331-339Abstract Full Text PDF PubMed Scopus (17) Google Scholar comparing performance videolaryngosc...

Quality Protein Maize (QPM) has about twice the amount of lysine and tryptophan of normal maize and hence represents an important tool of correcting its deficiency in protein quality. However, the effects of low nitrogen and drought on genetic parameters such as gene action and combining abilities of protein quantity and quality of QPM are not known. To study how these genetic parameters are af...