Composite slab behavior and strength analysis under static and dynamic loads

Steel-framed buildings are typically constructed using steel-deck-reinforced concrete floor slabs. The in-plane (or diaphragm) strength and stiffness of the floor system are frequently utilized in the lateral load-resisting system design. This paper presents the results of an experimental research program in which four full size composite diaphragms were vertically loaded to the limit state, under static or dynamic loads. Two test specimens were provided with longitudinal steel-deck ribs, and the other two specimens with cross steel-deck ribs. Typical composite diaphragm limit states are described, and the controlling limit state for each of the full size tests is indicated. The interaction effects between the reinforced concrete slab and the steel girder on the composite slab strength and stiffness were mainly studied

Rehabilitation of Collective Housing Ensembles Made of Large Precast Panels - General Aspects

Reconsidering the attitude towards safe and energy efficient buildings makes that the forefront of a rehabilitation process be the ensuring a healthy environment, a certain quality of the indoor environment and as well as ensuring the safety of the inhabitants. The indoor environmental quality, a determining factor regarding the health and welfare of occupants of a building, is determined by the air composition (in reference to chemical pollutants, physical, biological or other nature) and by the comfort (with the main components, acoustic, thermal and visual)

The restrictions imposed upon the urban development by the piezometric level. Case study: Otopeni-Tunari-Corbeanca

The objective of the study is to identify the urban development pressure exerted upon the limits imposed by the depth of the phreatic level. The territorial systems from the vicinity of Bucharest registered a momentous dynamics and it enabled the expanding of urbanized areas beyond the limits imposed by the natural conditions. The present research involved the creation of a database concerning the depth of the phreatic level, as well as the identification of the expansion stages undertaken by the urbanized areas. There were applied questionnaires concerning the degree of knowledge regarding the development restrictions for the beneficiaries of built spaces. The spatial layout of the indicators which were used in the research permitted the discovery of some areas where the decision to build something had been taken without analyzing the low depth of piezometric level

Şantierul arheologic Bicaz (reg. Bacău) / Le chantier archéologique de Bicaz

Nicolăescu-Plopşor Constantin S., Petrescu-Dâmboviţa Mircea, Constantinescu Nicolae, Teodoru Dan, Zaharia Emilia, Florescu Adrian C., Florescu Marilena, Diaconu Gheorghe. Şantierul arheologic Bicaz (reg. Bacău) / Le chantier archéologique de Bicaz. In: Materiale şi cercetări arheologice, N°6 1959. pp. 57-83

Lung Ultrasound Guided Fluid Management Protocol for the Critically Ill Patient: study protocol for a multi-centre randomized controlled trial

Abstract Background In routine intensive care unit (ICU) practice, fluids are often administered without a safety limit, which may lead to fluid overload and decreased survival. Recently, B-lines score (BLS) has been validated as a lung ultrasound (LUS) quantification of pulmonary congestion. This suggests that LUS may provide a safety threshold to conduct fluid therapy and to avoid overhydration. However, there is no randomized study to test the utility of LUS in guiding fluid management in ICU patients by using a pre-specified BLS cut-off value as a threshold for fluid removal. Methods LUS Guided Fluid Management Protocol for the Critically Ill Patient is a prospective, multi-centre, randomized controlled trial. Five hundred ICU patients will be randomly assigned in a 1:1 ratio, to protocolized LUS-based fluid management or usual care. The trial intervention will start on ICU admission and will consist in daily assessment of BLS and triggered evacuation of excessive fluids with loop diuretics (Furosemide) when BLS ≥ 15. If rebalancing volume status with diuretics fails, forced evacuation by ultrafiltration will be used. The main endpoint is death from all causes at 28 days from randomization. The secondary outcomes are presence and time-course evolution of organ dysfunctions, ICU- and hospital length of stay, all-cause mortality at 90 days, and health economics data. Discussion If study results will show that LUS guided fluid management protocol improves outcome in ICU patients, it will be the base for other studies to refine this protocol or track those categories of critically ill patients to whom it may bring maximum benefits. Trial registration ClinicalTrials.gov, NCT03393065. Registered on 8 January 2018

Creative economies in Romania – spatial projections and trends

Creative economies are at the heart of the knowledge-based economy. The main objectives of the study are to present the spatial design of the regional systems of creativity in Romania and to identify the evolutionary trends, by creating spatial models for key economic indicators, specific to such economic activities. This paper focuses on how creative economies are concentrated in the national network of settlements and how they differentiate in terms of regional profile. Consequently, a yearly nationwide database was created for 20002012, which includes four-digit creative economic activities, according to the Classification of National Economy Activities, for each administrative unit in Romania. The analyses, conducted for the same period, show a concentration of creative economies as a national polycentric network which includes the capital city and cities with over 300,000 inhabitants, as well as their structured territorial systems emerging around them, representing the local and regional polycentric networks. The analysis of the economic profiles highlights the growing share of creative economies in the national economy that tends to contribute more and more to the increase of the operational complexity of the local and regional economies.