ND2H has been detected for the first time in the dense core of L134N, at the peak ammonia position. The abundance ratio [ND2H]/[NH2D] is 0.05, a slightly smaller value than the deuterium fractionation observed for ammonia [NH2D]/[NH3] ∼ 0.1 (Tiné et al. 2000). This is the second doubly deuterated species detected so far in the interstellar medium, and the first one in a cold dense core. The che...

Catalytic converters are the most effective means of reducing pollutant emissions from internal combustion engines under normal operating conditions. But the future emission requirements cannot be met by three way catalysts (TWC) as they cannot effectively remove hydrocarbon (HC) and carbon monoxide (CO) emissions from the outlet of internal combustion engines in the cold-start phase. Therefore...

I. Six closely shorn sheep were given brome grass (Bromus inermis) pellets at the rate of 59 or 98 g dry matter (DM)/h and maintained at ambient temperatures of 2-5' and 22-25' for 35 d. Measurements of digestion, rate of passage of digesta, and nitrogen transformations were made during the last 13 d of temperature exposure. 2. Cold exposure at the lower level of intake reduced the apparent dig...

Salicylic acid (SA) plays an important role in the regulation of plant ripening and responses to abiotic stresses. In this study, the protective effect of SA on cold stress-caused oxidative damage in grape (Vitis vinifera L.) bunches was investigated during cold storage.  Grape bunches treated with 2 mM SA and  stored at 0°C with 85-90% RH for 30 days. Samples were selected from each treatment ...

A boost converter for thermoelectric energy harvesting in 130 nm CMOS achieves energy harvesting from a 10 mV input, which allows wearable body sensors to continue operation with low thermal gradients. The design uses a peak inductor current control scheme and duty cycled, offset compensated comparators to maintain high efficiency across a broad range of input and output voltages. The measured ...

Solution for the complete removal of carbon monoxide from the exhaust gases still poses a challenge to the researchers and this problem is still under development. Modeling for reduction of carbon monoxide is carried out using heterogeneous reaction using low cost non-noble metal based catalysts for the purpose of controlling emissions released to the atmosphere. A simple one-dimensional model ...

This work studies the feasibility of a pioneer technology for on-board hydrogen production: Ammonia Cracking Hollow Fibre Converter. The catalytic activity series ruthenium-based catalysts supported on carbon xerogel, during ammonia cracking reaction, was studied in packed bed reactor. To improve their physical-chemical properties, xerogels were activated either dioxide or atmosphere. most acti...

The propagation of light in moving media is dragged by atomic motion. light-drag effect can be dramatically enhanced reducing the group velocity with electromagnetically induced transparency (EIT). We develop a systematic procedure to accurately reconstruct complex wavefront slow single-shot measurements, enabling precise, photon shot-noise-limited spectroscopic measurements response across EIT...

The ability to probe atoms in high spatiotemporal resolution give us a powerful tool investigate the quantum properties of ultracold gases. Plenty useful imaging methods, including absorption imaging, phase contrast and fluorescence have been implemented detect atoms. Among them, is most widely used method cold lab. However, traditional affected by perturbations such as interference between opt...

catalysts with the formula of laco(1+x)o(3+δ), where 0 ≤ x ≤ 1, were studied for oxidation of co and c2h6 in a synthetic exhaust gas, comprising 6.0 % co and 0.2 % c2h6 in ar. ethane was selected as a model for hydrocarbons in the exhaust gas. the performance of catalysts is correlated to their properties, particularly their redox in oxidizing and reducing atmospheres. xrd patterns show perovsk...