This paper reports the results of our use of Cavity Ring Down Spectroscopy to extend the study of highly excited vibrational states in HCN. We extend our previous study of the HCN isotopomer, reporting on some weaker bands between 17 500 and 19 500 cm. We also report spectra of overtone and combination bands with six, seven, and eight quanta of stretching vibration in the isotopomers HCN and HC...

A versatile, continuous wave, optical parametric oscillator is used in combination with photoacoustic spectroscopy for long-term trace gas experiments of volatile compounds emitted by biological samples. The optical parametric oscillator-based spectrometer (wavelength near 3 μm, 8-MHz linewidth, output power ∼1 W) is successfully tested for the detection of hydrogen cyanide (HCN) emission from ...

We have observed the 3-2 transitions of DCN and HC 15 N in a number of hot molecular cores previously surveyed by us with the interesting result that the DCN/HCN ratio is low, a few times 10 ?3 , in the hot cores. The abundance ratio of DCN/HCN is derived bothòn-core' andòo-core' and, in general is larger at thèoo-core' positions. Comparision with chemical models of these sources indicates that...

The N/N ratio for N2 in the atmosphere of Titan was recently measured to be a factor of 2 higher than the corresponding ratio for HCN. Using a one-dimensional photochemical model with transport, we incorporate new isotopic photoabsorption and photodissociation cross sections of N2, computed quantum-mechanically, and show that the difference in the ratio of N/N between N2 and HCN can be explaine...

…upon being put into a solution of nicotine in sea water, the squid, 3 or 4 seconds, falls to bottom dish… Moore, 1919 Nicotine influences physiology organism via CNS.1 As confirmed also subiculum, may directly modulate hyperpolarization-activated cyclic nucleotide–gated (HCN) non-selective cation channel.2 The latter mirrors findings interneurons stratum oriens (SO) with axons terminating with...

[1] We report the first in situ measurements of hydrogen cyanide (HCN) and methyl cyanide (CH3CN, acetonitrile) from the Pacific troposphere (0–12 km) obtained during the NASA Transport and Chemical Evolution over the Pacific (TRACE-P) airborne mission (February–April 2001). Mean HCN and CH3CN mixing ratios of 243 ± 118 (median 218) ppt and 149 ± 56 (median 138) ppt, respectively, were measured...

Soil borne plant pathogens cause annual economic losses in most of the crops. In nature microbial interactions involve competition, hyper parasitism or antibiosis and these phenomena play an important role in striking ecological balance and keeping several plant pathogens in check. It is observed that plant growth promoting rhizobacteria (PGPR) influence the growth and yield of many plants. In ...

Garri is a popular and commonly consumed staple food in Nigeria especially among the Eastern Southern Nigerians. It nutritionally inadequate with main nutrient as carbohydrate. We examined potential of yellow cassava fortification soybean production Nutrient dense garri (NDG) to improve quality garri. from three geographical locations serve control. The Hydrogen cyanide (HCN), pH, carotene cont...

Abstract Background Pearl millet remains prone to many diseases; among them downy mildew caused by Sclerospora graminicola (Sacc.) Schroet is economically more important. The use of endophytic bacteria for management pearl as eco-friendly approach increasing attention sustainable alternative pesticides. objective the present study was isolate from roots cultivars and assess biocontrol activity ...