The Web-Based Learning Environment: A Comparative Study Between The Constructivist And Content-Based Approaches.

This article reports on the investigation into the differences in students' perceptions when they are subjected to two different instructional designs of the Web-based Learning Environments (WBLEs)

N′-(2-Hydr­oxy-5-nitro­benzyl­idene)-2-(1H-indol-3-yl)acetohydrazide

The mol­ecule of the title compound, C17H14N4O4, uses its amide –NH– group to form a hydrogen bond to the amido –C(=O)– group of an adjacent mol­ecule to furnish a linear chain structure. The hydr­oxy group forms an intra­molecular hydrogen bond; the indolyl –NH– unit does not engage in any strong hydrogen-bonding inter­actions

Important activities in activity-based life cycle cost in building facilities maintenance: a case study

Public universities’ budget constraint faces various challenges in maintaining their building facilities. A cost management solution in based on life-cycle cost through activity-based could provide the systematic approach in organizing, monitoring and analyzing process of facilities' maintenance costs. The aim of this paper is to determine the important facilities’ maintenance activities that should be included in an activity-based life-cycle cost process of public university building maintenance. Descriptive analysis is conducted in determining the important and non-important facilities' maintenance activities. By prioritizing activities through value added and non-value added maintenance activities, cost can be managed and controlled effectively

Seatbelt: A Double-Edged Sword

Intra-abdominal vascular injury due to blunt trauma is unusual in children. Due to its rarity, detailed reports dealing with its management are scarce in paediatric literature. Diagnosis of these injuries is challenging, and a high degree of awareness is necessary for rapid identification and treatment of these injuries. We report the case of a child with seatbelt sign and mesenteric vein injury due to blunt trauma to the abdomen during a motor vehicle accident where the seatbelt was incorrectly placed. She also sustained cervical vertebral injury. The pattern of injuries in children in these situations may differ from that found in adults. While seatbelts have undoubtedly saved many lives, awareness about correct placement of these restraints is extremely necessary

N′-[1-(2-Hydr­oxy-5-methyl­phen­yl)ethyl­idene]benzene­sulfonohydrazide

The two independent mol­ecules in the asymmetric unit of the title compound, C15H16N2O3S, are each linked by an N—H⋯Osulfon­yl hydrogen bond into a linear chain that runs along the shortest axis of the triclinic unit cell. The hydr­oxy groups are engaged in intra­molecular hydrogen bonding and the amino N atom shows pyramidal coordination

Bis{μ-2-(1H-indol-3-yl)-N′-[1-(5-methyl-2-oxidophen­yl)ethyl­idene]­aceto­hydraz­idato}bis­[aqua­zinc(II)] dimethyl sulfoxide tetra­solvate

The dinuclear title compound, [Zn2(C19H17N3O2)2(H2O)2]·4C2H6OS, lies about a center of inversion. The deprotonated monoanion O,N,O-chelates the Zn atom; the hydr­oxy O atom also engages in bonding to the symmetry-related Zn atom so that one N and three O atoms form a square around the metal. The coordination geometry is square-pyramidal, with the apical site occupied by a water mol­ecule. Hydrogen bonds, with the water mol­ecule serving as donor atom, lead to the formation of a linear chain motif. There is an N—H⋯O hydrogen bond between the complex molecule and solvent O atom

N′-(5-Bromo-2-hydroxy­benzyl­idene)-3,4,5-trihydroxy­benzohydrazide dihydrate

The title compound, C14H11BrN2O5·2H2O, crystallizes as hydrogen-bonded sheets. The 2-hydr­oxy group on the benzyl­idene group forms an intra­molecular hydrogen bond to the N atom of the C=N double bond. The amino N atom is a hydrogen-bond donor to a water mol­ecule. The hydr­oxy group on the benzohydrazide group is a hydrogen-bond donor to one acceptor site, whereas each water mol­ecule is a hydrogen-bond donor to two acceptor sites

Bis{2-bromo-4-chloro-6-[2-(phenyl­sulfon­yl)hydrazonometh­yl]phenolato-κ2 N,O 1}copper(II)

The Cu atom in the title compound, [Cu(C13H9BrClN2O3S)2], is chelated by two deprotonated Schiff base ligands in a square-planar coordination geometry; the Cu atom lies on a center of inversion. The –NH– group of one anion forms an intra­molecular hydrogen bond to the phenolate atom of the symmetry-related ion

2-Hydr­oxy-5-nitro­benzaldehyde thio­semicarbazone

The mol­ecule of the title compound, C8H8N4O3S, is planar. Adjacent mol­ecules are linked through O—H⋯S, N—H⋯S and N—H⋯O hydrogen bonds into a three-dimensional network

External beam irradiation of myocardial carcinoid metastases: a case report

The heart is an exceedingly rare site of metastatic involvement in carcinoid tumors. Only nineteen cases have been described in the literature over the past 30 years. We report here on a patient who presented with progressive carcinoid syndrome despite surgical resection of her liver metastases. She was found to have cardiac metastases on inidium-111-pentetreotide scintigraphy and subsequently underwent external beam radiation to the heart resulting in symptomatic palliation of her syndrome and objective radiographic response. To our knowledge, this is the first reported case of metastatic cardiac carcinoid treated with external beam irradiation