Availability of clean water and adequate sanitation facilities are of prime importance for limiting diarrheal diseases. We examined the spatial information on the groundwater quality and sanitation facilities of a village in southern India using Geographic Information System (GIS) tools. Place of residence, position of wells and latrines were mapped and well water samples were tested for microb...

The casing deformation problems are presented over 36 wells (among 112 horizontal wells by 2016) during fracturing processes in Weiyuan-Changning shale gas play in China.1 Subsequent tools could be blocked in the wellbore.2–4 The segments with serious deformation had to be abandoned before completing fracturing operations.5 The casing deformation issues make a great influence on production of s...

By introducing strain into semiconductor lasers using GaAs/Gai-xlnxAs quantum wells, their modulation bandwidth has been increased to beyond 20 GHz1'2'3& Our approach to high modulation bandwidth strained layer quantum well lasers has been to fabricate short cavity (less than 1OO.tm) multiple quantum well structures. In order to fabricate lasers of this length, the facets must be etched by chem...

Reliable detection of atrial fibrillation from intra-atrial signals is a central task in the development of implantable atrial defibrillators. Atrial rate (AR) and the amplitude probability density function (APDF) are normally used as parameters for discriminating between normal sinus rhythm (NSR) and atrial fibrillation (AF). We hereby propose a new peak-detection scheme based on threshold cro...

When the invasion percolation model is applied as a simplified model for the displacement of a viscous fluid by a less viscous one, the distribution of displaced mass follows two distinct universality classes, depending on the criteria used to stop the displacement. Here we study the distribution of mass for this process, in the case where four extraction wells are placed around a single inject...

Cognitive-behavioural group treatment is the treatment of choice for social phobia. However, as not all patients benefit, an additional empirically validated psychological treatment would be of value. In addition, few studies have examined whether a group treatment format is more effective than an individual treatment format. A randomized controlled trial addressed these issues by comparing ind...

We have implemented a simple, inexpensive, and fast procedure for validation and verification of the performance of pipettes mounted on automated liquid handlers (ALHs) as necessary for laboratories accredited under ISO 17025. A six- or seven-step serial dilution of OrangeG was prepared in quadruplicates in a flat-bottom 96-well microtiter plate, manually using calibrated pipettes. Each pipette...