AIMS The purpose of this study was to evaluate the community risk of infection from bioaerosols to residents living near biosolids land application sites. METHODS AND RESULTS Approximately 350 aerosol samples from 10 sites located throughout the USA were collected via the use of six SKC Biosamplers. Downwind aerosol samples from biosolids loading, unloading, land application and background op...

With the global liberalization industries in India are growing at a very fast pace, especially the small and medium enterprises (SMEs) like; foundries, mining industries, food processing industries etc. But due to lack of use of advanced technologies by SMEs, the labourers are exposed to dusty and hazardous environment and they are getting more prone to lungs related diseases. This problem is m...

BACKGROUND The current study's aim is to evaluate the possible interaction effects of khat chewing on treatment of paranoid schizophrenic patients. PATIENTS AND METHODS In the study group, 42 male subjects suffered from paranoid schizophrenia and were classified according to their khat chewing habits into two subgroups: either khat-chewer subgroup (SKc; n=21; r=11, h=10) or non-khat-chewer su...

Abstract Acetic acid and formic are volatile pollutants leading to degradation of some heritage materials. They usually determined in museum environments with various types passive samplers. In this work, SKC UMEx 200 samplers, originally intended for sampling $$\hbox {NO}_{2}$$ NO 2 </m...

Airborne transmission of infectious diseases attracts great attention since the COVID-19 pandemic. Yet, there has been an intense dispute about aerosol disease, which is largely due to lack qualified instruments for studying subject. Air sampling plays a critical role in all air pollution related study, and particularly airborne pathogen detection. Here, we designed evaluated portable high volu...

AIMS The aerosolization and collection of submicrometre and ultrafine virus particles were studied with the objective of developing robust and accurate methodologies to study airborne viruses. METHODS AND RESULTS The collection efficiencies of three sampling devices used to sample airborne biological particles - the All Glass Impinger 30, the SKC BioSampler and a frit bubbler - were evaluated...

Data aggregation protocols are required in Wireless Sensor Networks (WSNs) to improve the data accuracy and extend the network lifetime by reducing the energy consumption. The existing Data Aggregation-Optimal LEACH (DAO-LEACH) protocol for WSN is enhanced in terms of security and fault-tolerance based on Gracefully Degraded Data Aggregation (GDDA) to ensure the integrity of the aggregated data...

The objective of this experiment was to describe the stability of airborne infectious porcine reproductive and respiratory syndrome virus (PRRSV) as a function of temperature and relative humidity. A cloud of infectious PRRSV was aerosolized using 24-jet Collison nebulizer into a dynamic aerosol toroid (DAT) maintained at a specific temperature and relative humidity. The PRRSV cloud within the ...

The time complexity of problems and algorithms, i.e., the scaling of the time required for solving a problem instance as a function of instance size, is of key interest in theoretical computer science and practical applications. In this context, propositional satisfiability (SAT) is one of the most intensely studied problems, and it is generally believed that solving SAT requires exponential ti...