1,501 research outputs found
Type A Dissection Presenting as a Double Aortic Valve
We report a case of spontaneous aortic root dissection in a middle-aged male without history of recent trauma, mimicking double aortic valve on the echocardiogram which extended to the right brachiocephalic artery. The patient immediately underwent Bentall procedure
Live Yeast Supplementation and Heat Stress on Ruminal Fusobacterium necrophorum Counts
Reduced average daily gains and feed efficiencies, as well as liver condemnations associated with severe liver abscesses in feedlot cattle, are economic liabilities to producers and packers. Fusobacterium necrophorum, a Gram-negative ruminal bacterium, is the primary etiological agent of liver abscesses in grain-fed cattle. F. necrophorum survives elevated rumen temperatures during heat stress and exploits ruminal acidosis in conjunction with rumenitis as an opportunity to invade ruminal epithelium and enter portal circulation to reach the parenchyma of the liver. Live yeast supplementation has been shown to stabilize ruminal pH levels away from acidotic conditions during heat stress in dairy cattle
Latent Field Discovery In Interacting Dynamical Systems With Neural Fields
Systems of interacting objects often evolve under the influence of field
effects that govern their dynamics, yet previous works have abstracted away
from such effects, and assume that systems evolve in a vacuum. In this work, we
focus on discovering these fields, and infer them from the observed dynamics
alone, without directly observing them. We theorize the presence of latent
force fields, and propose neural fields to learn them. Since the observed
dynamics constitute the net effect of local object interactions and global
field effects, recently popularized equivariant networks are inapplicable, as
they fail to capture global information. To address this, we propose to
disentangle local object interactions -- which are equivariant
and depend on relative states -- from external global field effects -- which
depend on absolute states. We model interactions with equivariant graph
networks, and combine them with neural fields in a novel graph network that
integrates field forces. Our experiments show that we can accurately discover
the underlying fields in charged particles settings, traffic scenes, and
gravitational n-body problems, and effectively use them to learn the system and
forecast future trajectories.Comment: NeurIPS 2023. https://github.com/mkofinas/aethe
The Mn(II), Co(II), Ni(II) and Cu(II) complexes of (Z)-N'((1H-indol-3-yl)methylene)nicotinohydrazide Schiff base: synthesis, characterization and biological evaluation
Schiff bases being biological moieties possess diverse biological and pharmaceutical applications. Metal ions play an important role in various functions of the biological system as well as the human body. The importance of Schiff base and their metal complexes have been acknowledged in the field of bioinorganic chemistry. The current investigation hence focuses on the synthesis and characterization of a bidentate indole-based ligand(Z)-N'((1H-indol-3-yl)methylene)nicotinohydrazide (L) derived from indole-3-carboxaldehyde (1), nicotinic acid hydrazide (2) and their metal complexes of Mn(II), Co(II), Ni(II) and Cu(II), (4a-d) in 2:1 stichiometric ratio. All the synthesized ligand and complexes were characterized by IR, UV-Visible, H-1 NMR, C-13 NMR, Mass, Powder XRD analysis. Further, the ligand and their metal complexes were screened for antimicrobial, antioxidant and DNA cleavage studies. Among the synthesized complexes, Ni(II) (4c) showed highest antimicrobial activity against tested Gram -ve and Gram +ve bacterial strains and fungal microorganism, better than the ligand (L). The antioxidant activity results showed that the metal complexes (4a-d) were observed to be more active than the parent ligand. Furthermore, the ligand (L) and their respective metal (II) complexes (4a-d) were found to cleave the pBR322 DNA, during gel electrophoresis studies
Genetic mapping of Z chromosome and identification of W chromosome-specific markers in the silkworm, Bombyx mori
In the silkworm, Bombyx mori, the female is the heterogametic (ZW) sex and the male is homogametic (ZZ). The female heterogamety is a typical situation in the insect order Lepidoptera. Although the W chromosome in silkworm is strongly female determining, no W-linked gene for a morphological character has been found on it. The Z chromosome carries important traits of economic value as well as genes for various phenotypic traits, but only 2% of molecular information based on its relative size is known. Studies conducted so far indicate that the Z-linked genes are not dosage compensated. In the present study, we constructed a genetic map of randomly amplified polymorphic DNA fragments (RAPD), simple sequence repeats (SSR), and fluorescent intersimple sequence repeat PCR (FISSR) markers for the Z chromosome using a backcross mapping population. A total of 16 Z-linked markers were identified, characterized, and mapped using od, a recessive trait for translucent skin as an anchor marker yielding a total recombination map of 334.5 cM. The linkage distances obtained suggested that the markers were distributed throughout the Z chromosome. Four RAPD and four SSR markers that were linked to W chromosome were also identified. The proposed mapping approach should be useful to identify and map sex-linked traits in the silkworm. The economic and evolutionary significance of Z- and W-linked genes in silkworm, in particular, and lepidopterans, in general, is discussed
Utility of Sea Surface Height anomaly (SSHa)in determination of Potential Fishing Zones
Physical processes in the oceans can be monitored by altimeters well before a radiometer can in terms of temperature or chlorophyll concentration. Herein we show the importance of Sea Surface Height anomaly (SSHa, retrieved with altimeter) in demarcating potential fishing
zones. We also show how SSHa can help predict tuna movements, horizontally as well as vertically in the water column. Moreover, we prove these prediction with positively
correlating SSHa to tuna hooking rates. In the end, we list out present and potential future sources from where SSHa can be retrieved in order to provide improved fishery advisories
2-[(E)-(2,4-Dimethylphenyl)iminomethyl]phenol
The asymmetric unit of the title compound, C15H15NO, contains two independent molecules, both of which exist in trans configurations with respect to the C=N bonds [1.278 (2) and 1.279 (2) Å]. In each molecule, intramolecular O—H⋯N hydrogen bonds generate S(6) ring motifs. In one molecule, the benzene rings form a dihedral angle of 13.38 (9)°, while in the other molecule the dihedral angle is 30.60 (10)°. In the crystal, the two independent molecules are linked via weak intermolecular C—H⋯O hydrogen bonds
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