Olfaction represents an important sensory modality for navigation of both homing pigeons and wild birds.Experimental evidence in homing pigeons showed that airborne volatile compounds carried by the winds at the home area are learned in association bushranger awning with wind directions.When displaced, pigeons obtain information on the direction of

A 9-year-old boy was suspected truvisionhealthftp.com of having acute myocardial infarction and emergency coronary angiogram was performed.No signs of flow limitation in either coronary artery was detected.We performed intravascular ultrasonography from the ascending aorta, which showed a ridge on the left main trunk read more acting like a valve,

According to the actual situation of methanol production process, Aspen Plus software is used to build the methanol synthesis process flow model.The main and side reaction system is built in the model, which is realized by connecting the main and side reactors in series and setting the conversion rate of side reaction.Considering the model validati

Two new indolizidine alkaloids, crepidatumines C (1) and D (2), together with crepidine (3), isocrepidamine (4), and crepidamine (5) were isolated from the Dendrobium crepidatum Lindl.ex Paxt.X-ray diffraction experiments established the absolute configurations of known compounds 3 and 4.The planar structures and relative configurations truvisionhe