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AbstractBackgroundRana Plaza building collapse is the worst industrial disaster of Bangladesh so far. The 9-storied structure collapsed suddenly on April 24, 2013, with more than 4000 people inside. Bangladesh Armed Forces played a key role in the massive rescue operations.MethodsWe conducted a cross-sectional study with 423 victims who were treated at a Combined Military Hospital to review the pattern of injuries and management provided.ResultsMiddle-aged (35±12.75 years) females (68.32%) were the majority of the victims. Among the injured, 42.35% had soft tissue injury, 22.55% had abrasions, 18.79% had fractures, 3.75% had facial injuries, and 2.5% each had head and abdominal injuries. We treated the injured with various surgical approaches, such as soft tissue debridement (38.84%), fasciotomy (18.79%), amputation (3.75%), and other procedures. We had to refer 8.27% of the patients to different advanced centers. The mortality rate was 5.91%, including 1 volunteer rescuer.ConclusionPattern of injuries and modalities of management needed in an industrial disaster is a valuable experience which can be utilized in preparing to face disasters in the future and beyond. Death of a voluntary rescuer once again warrants the necessity of using a helmet and safety gear during any rescue operation. (Disaster Med Public Health Preparedness. 2017;11:21–24)

A newly designed oxime based probe, 2,4-dihydroxyacetophenone-oxime (DHAO), was found to recognize H2AsO4–selectively with ~3 fold “turn-on” fluorescence enhancement and LOD of 29 μM, K= (2.10 ± 0.54)× 104M–1in purely aqueous medium. The structures of the DHAO and its adduct with H2AsO4–were optimized by DFT calculations. Intracellular imaging of As(V) in HepG2 cells demonstrate the possibilities of in vitro/in vivoapplications for selective monitoring of such species.

A new, easily synthesizable rhodamine-based chemosensor with potential N2O2donor atoms, L3, has been characterized by single-crystal X-ray diffraction together with 1H NMR and high-resolution mass spectrometry (HRMS) studies. L3was found to bind selectively and reversibly to the highly toxic Hg2+ion. The binding stoichiometry and formation constant of the sensor toward Hg2+were determined by various techniques, including UV–vis, fluorescence, and Job’s studies, and substantiated by HRMS methods. None of the biologically relevant and toxic heavy metal ions interfered with the detection of Hg2+ion. The limit of detection of Hg2+calculated by the 3σ method was 1.62 nM. The biocompatibility of L3with respect to its good solubility in mixed organic/aqueous media (MeCN/H2O) and cell permeability with no or negligible cytotoxicity provides good opportunities for in vitro/in vivo cell imaging studies. As the probe is poorly soluble in pure water, an attempt was made to frame nano/microstructures in the absence and in the presence of sodium dodecyl sulfate (SDS) as a soft template, which was found to be very useful in synthesizing morphologically interesting L3microcrystals. In pure water, micro-organization of L3indeed occurred with block-shaped morphology very similar to that in the presence of SDS as a template. However, when we added Hg2+to the solution of L3under the above two conditions, the morphologies of the microstructures were slightly different; in the first case, a flowerlike structure was observed, and in second case, a simple well-defined spherical microstructure was obtained. Optical microscopy revealed a dotlike microstructure for L3–SDS assemblies, which changed to a panicle microstructure in the presence of Hg2+. UV–vis absorption and steady-state and time-resolved fluorescence studies were also carried out in the absence and presence of Hg2+, and also the SDS concentration was varied at fixed concentrations of the receptor and guest. The results revealed that the fluorescence intensity increased steadily with [SDS] until it became saturated at ∼7 mM SDS, indicating that the extent of perturbation to the emissive species increases with the increase in [SDS] until it becomes thermodynamically stable. There was also an increase in anisotropy with increasing SDS concentration, which clearly manifests the restriction of movement of the probe in the presence of SDS.

An innovative approach to the material science has demonstrated that photocatalytic activity may be conferred to cement-based construction materials, such as concrete, mortars, paints, etc. Photocatalyst is needed for a cleaner environment and a better quality of life that leads to thoughts of a more eco-compatable use of light. Addition of photocatalytic materials to the RC structure during its construction phase could reduce the corrosion problem of RC materials. This material hinders calcium oxide to form acidic compound. In this study, cement-based mixed photocatalytic material has been presented, which would adjustable with RC material for enhancing oxidization process and reducing corrosion problem.