Exploiting microorganisms for remediation of waste sites is a promising alternative to groundwater pumping and above ground treatment. The objective of in situ bioremediation is to stimulate the growth of indigenous or introduced microorganisms in regions of subsurface contamination, and thus to provide direct contact between microorganisms and the dissolved and sorbed contaminants for biotrans...

Staphylococcus aureus peptidoglycan (PG) is densely functionalized with anionic polymers called wall teichoic acids (WTAs). These polymers contain three tailoring modifications: d-alanylation, α-O-GlcNAcylation, and β-O-GlcNAcylation. Here we describe the discovery and biochemical characterization of a unique glycosyltransferase, TarS, that attaches β-O-GlcNAc (β-O-N-acetyl-D-glucosamine) resid...

Biomass is one of the most important sources of renewable energy. One aim of Biomass gasification is to convert a solid feedstock into a valuable syngas for electricity or liquid fuel production. Actual industrial auto-thermal gasification processes achieve a production of syngas mainly polluted by products such as dust, nitrogen oxides, sulfur dioxide and tars. Tars remain, one of the main dra...

THE employment of tar in dermatology has a long history. According to Hebra (1868), Theophrastus, Dioscorides and Pliny advocated its use in the treatment of diseases of the skin. For many centuries this treatment fell into disfavour, partly on account of the general acceptance of Galen's " acrimonia sanguinis " theory ofthe causation ofskin disease which discouraged the use oflocal application...

(smoke condensâtes),of which some fractions are, and others are not, active in epidermal carcinogenesis (4, 5). The method of fluorescence micros copy was used to examine histologie sections of skin. Of course, the chemical composition of the tar materials was not to be inferred from their fluorescence, and this analytic limitation was clearly recognized. The microscopic pattern of cutaneous l...

Intelligent things are widely connected in Internet of Things (IoT) to enable ubiquitous service access. This may cause heavy service redundant. The trust-aware recommender system (TARS) is therefore proposed for IoT to help users finding reliable services. One fundamental requirement of TARS is to efficiently find as many recommenders as possible for the active users. To achieve this, existing...

Development of Web 2.0 enabled users to share information online, which results into an exponential growth of world wide web data. This leads to the so-called information overload problem. Recommender Systems (RS) are intelligent systems, helping on-line users to overcome information overload by providing customized recommendations on various items. In real world, people are willing to take adv...

Aqueous activities on Mars have gradually declined since the Noachian (>3.7 Ga). Although water can be stored in subsurface during latest epochs, geomorphological evidence is still limited. In this study, we used situ imaging and spectral data acquired by China's Zhurong rover, as well high-resolution remote-sensing data, to investigate transverse aeolian ridges (TARs) landing region of Utopia ...

BACKGROUND AND PURPOSE The first generations of total ankle replacements (TARs) showed a high rate of early failure. In the last decades, much progress has been made in the development of TARs, with the newer generation showing better results. We evaluated TARs implanted with rheumatoid arthritis (RA) or juvenile inflammatory arthritis (JIA) as indication. PATIENTS AND METHODS 58 total ankle ...