Water is the most vital resource for the living beings to survive. India has a vast and varied inland water resource which is considered to be richest in world’s nature lakes. The physicochemical characteristic of Nellore tank has been studied for monsoon, pre-monsoon, postmonsoon in the year. From the results water body was found to be well in the permissible limit of BIS (1998, except pH, DO,...

A disposable preoxidation technique that dramatically improves the detection and identification of volatile organic compounds (VOCs) by a colorimetric sensor array is reported. Passing a vapor stream through a tube packed with chromic acid on silica immediately before the colorimetric sensor array substantially increases the sensitivity to less-reactive VOCs and improves the limits of detection...

Peak and average power emissions of the newly emerging ultra wideband (UWB) radio are supposed to be limited by regulatory constraints. Impact of emission constraints on direct sequence (DS-) UWB communications that use arbitrary chip-duty is discussed in this letter. Depending on the communication pulse shape, a minimum chip-duty below which average emission cannot be increased with bandwidth,...

The motorcycle riders are subjected to extreme vibrations due to the vibrations of its engine, improper structural design of the motorcycle and the bad road conditions. The literature review reveals that the vibrations are most hazardous to the health if it exceeds the limit. The experiments were conducted to measure the magnitude of the vibrations acting on the rider during motorcycle riding u...

The presence of formaldehyde in indoor air samples has been detected in five screen printing facilities of Novi Sad, Serbia. Air was sampled five times during one working week for each screen printing facility. The sampling was conducted continuously during 4 hours. The concentrations of formaldehyde were determined by UV-VIS spectrometry at 580 nm. The average concentrations of formaldehyde we...

Everything that is not prohibited is permissible. So, what is prohibited in the course of chemical reactions, heat transfer and other dissipative processes? Is it possible to “overshoot” the equilibrium, and if yes, then how far? Thermodynamically allowed and prohibited trajectories of processes are discussed by the example of effects of equilibrium encircling. The complete theory of thermodyna...

The "climate problem" has come to the fore in public policy debates over the last year or so. The continuing high temperatures, the spate of intense tropical cyclones and deepening droughts in some parts of the world have focused attention on the issue of defining "dangerous climate change" [1]. This is often conceptualised as an upper limit to the rise in global mean temperature, for example, ...

Heavy metals concentrations in bivalve Psammotaea elongata from five sampling sites in Semerak Lagoon were determined by ICP-MS. The mean concentrations of Cd, Cu, Pb, Fe and Zn were 0.18, 4.42, 1.15, 1.47 and 46.35 μg/g in total soft tissue; 0.68, 20.08, 5.29, 85.5 and 9.06 μg/ g in stomach; 0.7, 17.05, 4.39, 84.15 and 8.62 μg/g in leg; 0.74, 15.19, 4.4, 80.69 and 8.6 μg/g in ligament, respect...

We study the non-asymptotic fundamental limits for transmitting classical information over memoryless quantum channels, i.e. we investigate the amount of classical information that can be transmitted when the channel is used a finite number of times and a constant average error is permissible. We show that, in the absence of entanglement between different channel uses, the non-asymptotic fundam...

BACKGROUND The lumbar spine may experience significant shear forces during occupational tasks due to the force of gravity acting on the upper body when bending the trunk forward, or when performing tasks involving pushing or pulling. Shear force limits of 1000 N and 500 N have been recommended by previous authors for maximum permissible limit and action limit, respectively. METHODS The presen...