Search results for "PIP"
showing 10 items of 1156 documents
Sistemes de producció lítica en el trànsit Plistocè-Holocè. Estudi de la seqüència arqueològica de Coves de Santa Maira (Castell de Castells, Alacant…
2018
A la regió mediterrània ibèrica hi ha una llarga tradició d’estudis referents als últims moments del Tardiglacial i els inicis de l’Holocè. És en este marc espai-temporal en què s’inscriu el nostre treball, en un episodi que percebem com complex per la regionalització dels conjunts industrials. La complexitat d’aquests moments es fa palesa a través de les diferents propostes crono-culturals que hui es troben a la literatura arqueològica, existint un gran nombre de noms per a denominar les diferents entitats arqueològiques regionals identificades (Epipaleolític, Epimagdalenià, Magdalenià superior final...). El trànsit Plistocè-Holocè està caracteritzat per ràpids canvis ecològics lligats a l…
Influence of seamless pipes wall thickness variation for the effectiveness of Automated Ultrasonic Testing
2015
Offshore pipelines construction is a technological challenge. Increasing water depth, harsh environments, engineering and commercial constraints are just some of the existing issues. Material selection therefore plays a key role and, for several applications, seamless pipes offer both the best technical and commercial compromise. Typically, NDT inspection of girth welds is carried out using the phased array based automated ultrasonic testing (AUT) zonal discrimination approach. AUT, compared to other techniques, guarantees a higher probability of detection of flaws and it also allows a really accurate assessment of the indications. However, since one of the peculiarities of this technique i…
Push-out bond strength of different endodontic obturation material at three different sites : in-vitro study
2017
BACKGROUND The key to success of any root canal therapy is adequate obturation of the prepared root canal space. Root canal sealers are not dimensionally stable and might dissolve partially over a period of time. The objective of this in vitro study is to evaluate the push-out bond strength to intraradicular dentin of two endodontic obturation materials. MATERIAL AND METHODS Forty extracted single rooted permanent teeth were used. Canals orifice was explored, teeth were instrumented. The samples were divided into two groups each containing twenty specimens obturated with different obturation material (Group1 Epiphany/Resilon and Group 2 Gutta Percha/AH Plus).The obturation systems used in t…
Evaluation of a hash-compress-encrypt pipeline for storage system applications
2015
Great efforts are made to store data in a secure, reliable, and authentic way in large storage systems. Specialized, system specific clients help to achieve these goals. Nevertheless, often standard tools for hashing, compressing, and encrypting data are arranged in transparent pipelines. We analyze the potential of Unix shell pipelines with several high-speed and high-compression algorithms that can be used to achieve data security, reduction, and authenticity. Furthermore, we compare the pipelines of standard tools against a house made pipeline implemented in C++ and show that there is great potential for performance improvement.
Modeling of Friction Losses in Offshore Knuckle Boom Crane Winch System
2018
This paper presents a method for friction modeling in a hydraulically actuated multi motor winch system of an offshore knuckle boom crane. The method is based on a combination of a model of the variable displacement axial piston motor based on measurements from the sub supplier, and combined with a model of the remaining friction loss obtained from measurements on the full system.
Vesamicol blocks the recovery, by recycling cholinergic electromotor synaptic vesicles, of the biophysical characteristics of the reserve population.
1993
The effect of vesamicol on the ability of recycling cholinergic synaptic vesicles to recover, during a period of post-stimulation rest, the biophysical properties of the reserve pool was studied in prestimulated perfused blocks of the electric organ of the electric ray, Torpedo marmorata, a tissue rich in cholinergic synapses. The effect of the drug was analysed by high-resolution centrifugal density-gradient fractionation in a zonal rotor of the extracted vesicles. The two vesicle fractions were identified by their ATP and acetylcholine content and the recycled vesicles by their acquisition of [3H]acetylcholine derived from [3H]acetate in the perfusate. Vesamicol (10 microM) blocked the up…
Random Vibrations of Structures under Propagating Excitations
1995
The problem of vibrations of structures under incoherent or, in particular, propagating excitations is important for large, extended civil engineering structures like bridges, lifelines, dams, offshore structures or for aircraft structures. In seismic engineering spatial ground motion models have been studied for more than a decade but credible, stochastic characteristics are available only since SMART-1 accelerograph array is in operation at Lotung in Taiwan.
A Parallel Face Detection System Implemented on FPGA
2007
In this paper, we introduce a methodology for designing a system for face detection and its implementation on FPGA. The chosen face detection method is the well-known convolutional face finder (CFF) algorithm, which consists in a pipeline of convolutions and subsampling operations. Our goal is to define a parallel architecture able to process efficiently this algorithm. We present a dataflow based architecture algorithm adequation (AAA) methodology implemented using the SynDEx software, in order to find the best compromise between the processing power and functionality requirement of each processor element (PE), and the efficiency of algorithm parallelization. We describe a first implementa…
Hydrological Analysis of Loess Plateau Highland Control Schemes in Dongzhi Plateau
2020
Gully Consolidation and Highland Protection (GCHP) Project is a major soil and water conservation and land remediation project implemented in the Chinese Loess Plateau (CLP). As the connection between the mechanisms of erosion and practical applications for addressing it is not clear, the implementation of engineering measures to combat the problem has been insufficient to date. This study used field investigation and descriptive statistics, together with hydrological analysis modeling to gain an understanding of the impact of the Loess Plateau Highland Control Schemes on the evolution of the Dongzhi Plateau as the largest, most well-preserved, and the thickest loess deposit region in China…
IL PIRO PIRO BOSCHERECCIO TRINGA GLAREOLA IN ITALIA È UNO SVERNANTE REGOLARE
2019
The Wood Sandpiper,Tringa glareola, is a regular wintering species in Italy. We revised wintering status of Wood Sandpiper analysing 75 sightings (99 individuals) from December 2001 until January 2019. Data were collected from direct monitoring in Latium and Sicily and integrated by bibliography and national/regional data base. The species is regularly wintering with an estimate population of 1-9 individuals per year (mean value 1.32 individuals/sighting; DS=0.71). Tringa glareola was recorded in 40 sites, 20 Provinces and 10 Regions. Preferred wintering places are in Latium, Sicily and Sardinia. Utilised sites during last wintering seasons are increasing.