Experimental dataset on water levels, sediment depths and wave front celerity values in the study of multiphase shock wave for different initial up- and down-stream conditions

This data article presents a rich original experimental video sources and wide collections of laboratory data on water levels, sediment depths and wave front celerity values arose from different multiphase dam-break scenarios. The required data of dam-break shock waves in highly silted-up reservoirs with various initial up- and down-stream hydraulic conditions is obtained directly from high-quality videos. The multi-layer shock waves were recorded by three professional cameras mounted along the laboratory channel. The extracted video images were rigorously scrutinized, and the datasets were obtained through the images via image processing method. Different sediment depths in the upstream reservoir and dry- or wet-bed downstream conditions were considered as initial conditions, compromising a total of 32 different scenarios. A total of 198 original experimental videos are made available online in the public repository "Mendeley Data" in 8 groups based on 8 different initial upstream sediment depths [1], [2], [3], [4], [5], [6], [7], [8]. 20 locations along the flume and 15 time snaps after the dam breaks were considered for data collecting. Consequently, a total of 18,000 water level and sediment depth data points were collected to prepare four datasets, which are uploaded in the public repository "Mendeley Data". A total of 9600 water level data points could be accessed in [9], [10], while 8400 sediment depth data points are available online in [11], [12] and could be utilized for validation and practical purposes by other researchers. This data article is related to another research article entitled "Experimental study and numerical verification of silted-up dam-break" [13]

Optimal Water Allocation from Subsurface Dams: A Risk-Based Optimization Approach

Subsurface dams, strongly advocated in the 1992 United Nations Agenda-21, have been widely studied to increase groundwater storage capacity. However, an optimal allocation of augmented water with the construction of the subsurface dams to compensate for the water shortage during dry periods has not so far been investigated. This study, therefore, presents a risk-based simulation–optimization framework to determine optimal water allocation with subsurface dams, which minimizes the risk of water shortage in different climatic conditions. The developed framework was evaluated in Al-Aswad falaj, an ancient water supply system in which a gently sloping underground channel was dug to convey water from an aquifer via the gravity force to the surface for irrigation of downstream agricultural zones. The groundwater dynamics were modeled using MODFLOW UnStructured-Grid. The data of boreholes were used to generate a three-dimensional stratigraphic model, which was used to define materials and elevations of five-layer grid cells. The validated groundwater model was employed to assess the effects of the subsurface dam on the discharge of the falaj. A Conditional Value-at-Risk optimization model was also developed to minimize the risk of water shortage for the augmented discharge on downstream agricultural zones. Results show that discharge of the falaj is significantly augmented with a long-term average increase of 46.51%. Moreover, it was found that the developed framework decreases the water shortage percentage in 5% of the worst cases from 87%, 75%, and 32% to 53%, 32%, and 0% under the current and augmented discharge in dry, normal, and wet periods, respectively

Skin Metastasis from an Occult Esophageal Adenocarcinoma

Metastases to the skin from carcinoma arising in other organs are uncommon, yet they may be the first presentation of neoplastic disease. They usually originate from primary tumours in the breast, lung or colon. Skin metastases from esophageal adenocarcinoma are extremely rare. A unique case of an otherwise healthy patient who presented with a small, painless, mobile, clinically localized facial skin nodule is reported. A biopsy revealed metastatic adenocarcinoma, and subsequent investigations detected the primary tumour in the esophagus, despite no symptoms

Early Detection of blaTEM in Klebsiella Isolates by the Molecular ‎Polymerase Chain Reaction Method

BACKGROUND AND OBJECTIVE: Obtaining information regarding pathogenesis and prevalence of extended spectrum beta-lactamase (ESBL) producing genes seems to be necessary, since it can promote prevention modalities and treatment of the infections caused by bacterias such as Klebsiella. The aim of this study was early identification of the blaTEM gene in Klebsiella, using polymerase chain reaction (PCR) technique. METHODS: In this cross-sectional study, conducted form April to September 2013, 70 Klebsiella isolates were extracted from clinical samples (i.e., wound, urine, sputum and blood) using biochemical tests, including non-state fermentation and triple sugar iron, negative indole, motile and methyl red, as well as positive Voges–Proskauer and urease tests. Subsequently, the frequency of ESBL producing strains was determined by means of combined disk method. DNA was extracted by boiling and was investigated for the presence of TEM gene using the PCR approach. FINDINGS: In the 70 Klebsiella isolates, 11 cases of ESBL phenotype were observed, of which 10 cases contained TEM beta-lactamase resistance gene. In addition, 9 out of 59 samples (26%) of negative ESBL in antibiogram, were determined positive in terms of blaTEM gene using PCR method. CONCLUSION: Given the increasing prevalence of ESBL producing strains and poor diagnosis rate of antibiotic resistance through antibiogram method, applying more accurate techniques such as PCR is highly recommended