Investigation of Quality Awareness, Developments and Factors Impeding Product Quality Improvement in Ethiopian Medium and Large Scale Manufacturing Industries

The quest for quality products together with the convergence of our globe into a village has forced manufacturing industries to run under highly competitive environment even to the most sophisticated western industries. The challenge is becoming twofold for manufacturing industries of developing countries in general and Ethiopian manufacturing industries in particular. They are rapidly losing the domestic market for imported products which are cheaper and better in quality in most cases. This empirical research examines quality awareness and developments as well as identifies factors affecting product quality based on a survey conducted in a total of 35 Ethiopian medium and large scale manufacturing industries. The study includes 18 public, 16 private and one joint venture manufacturing industries engaged in the production of food and beverage, Textile, leather & footwear, metal, non-metallic mineral products and chemicals. The study revealed that, 72.8% of the surveyed industries have no incentive programs related to quality improvement, 62.8% have no established PDSA cycle, 57.1% have no information about the product quality of their competitors, while, 50% don’t have long as well as short term quality policy. Moreover, it uncovers nine factors which are currently affecting the product quality of Ethiopian Medium and large scale manufacturing industries

1. Greci ed indigeni nei santuari della Magna Grecia : i casi di Timmari e Garaguso

The paper examines two particular sanctuaries of Basilicata, situated in the hinterland of the greek colonies of Metapontum and Taras, outside the chora of the poleis : Garaguso on the hills overlooking the Cavone-Salandrella river, and Timmari, in the territory north-west of Matera, overlooking the Bradano river. This santuaries are situated in an area which saw intense visitation during the archaic age and presents significant distinctive traits which are very adaptable to a frontier area between Greeks and Natives. The forthcoming study of all the unpublished materials will permit the acquisition of further important data and will have the scope of defining the different models of religious practices in this indigenous santuaries which have characterized the history of this territory in the Archaic Age. An objective of the research regards the definition of the function of the two sanctuaries and the role played by greek and native people attending the cul

Da Taranto alla Mesogaia nord-lucana: le terrecotte architettoniche dell'Anaktonon di Torre di Satriano

Si presentano le terrecotte architettoniche, rinvenute recentemente a Torre di Satriano in relazione ad un edificio identificato come residenza del capo della comunità di età arcaica, proponendo di identificare gli artigiani attivi nell'insediamento indigeno con Greci provenienti da Taranto: se le iscrizioni (numeri ordinali relativi alla messa in opera del tetto), incise sulle terrecotte rimandano alla apoikia spartana, iconografia e stile di fregio e acroteri rimandano alla cultura artigianale laconica

Biomarcadores etológicos no invasivos de estrés ambiental: estudio comparativo en dos teleosteos de ecosistemas de la región pampeana argentina

Mediante un dispositivo de registro automático se estudió el efecto de la exposición a soluciones subletales de Cd2+ (0.3 mg. L'1) sobre algunos parámetros etológicos de juveniles de Cyprinus carpió (carpa común) y de Astyanax fasciatus (“mojarra”). Se evaluó el efecto del metal sobre la actividad natatoria total y las preferencias altitudinales y laterales de los peces. Los tres parámetros se registraron simultáneamente mediante un dispositivo original. Se evaluaron los niveles “normales” o estándar de dichos parámetros (los peces en agua potable, control) y los alcanzados por los mismos individuos tras su exposición al tóxico de referencia (Cd). El metal provocó una depresión de la actividad natatoria total alcanzando una magnitud comparable en ambas especies. La preferencia altitudinal, también resultó modificada: C. carpió se halló con mayor frecuencia en la capa superior de los acuarios mientras que A. fasciatus se ubicó en las inferiores. En cuanto a la preferencia lateral, los individuos de ambas especies evitaron la franja vertical donde se producía el goteo de la solución de Cd; si bien esta respuesta espacial de los animales no siguió un patrón definido fue más marcada en las carpas. Todas las respuestas se pusieron de manifiesto inmediatamente después de haberse iniciado la exposición al Cd. El método resultó sensible y apto para el seguimiento de los parámetros etológicos seleccionados. Se concluye que la actividad natatoria y la ubicación espacial de las especies estudiadas, entre otros indicadores, pueden ser considerados como biomarcadores de toxicidad acuática.By means of an automatic recording device, the eífects of the exposure to sublethal Solutions of Cd2+ (0.3 mg. L2) on some ethological parameters of juvenile Cyprinus carpió (common carp) and Astyanaxfasciatus. The effect of the metal was evaluated through three parameters: the total swimming activity and the spatial (lateral and altitudinal) preferences, relative to Controls (fish kept in tap water); they were registered simultaneously by means oían original device. There were determined successively the “normal” or standard levels of those parameters in control fish and those reached by the same individuáis aftertheir exposure to thereferencetoxic (Cd). In both species the metal caused a depression of the total swimming activity in a comparable magnitude. The altitudinal preference was also modified: C. carpió was found more frequently in the superior layer of the aquaria while A. fasciatus was found in the inferior ones. For the lateral preference, the individuáis of both species showed an avoidance behavior of the site of the aquaria where the Cd Solutions was dripping. This response of the animáis didn't follow a defined pattem, but was more marked in the carps. All the evaluated responses to the toxic were detected immediately after the beginning of the exposure to Cd. The method proved to be sensitive and apt for the monitoring of the measured behavioural parameters which makes it a promising tool for biomonitoring purposes. We concluded that the swimming activity and the spatial location preferences of the studied species, among other, may be considered as biomarkers of aquatic toxicity

X-Ray Microscopy: Preparations for Studies of Frozen Hydrated Specimens

X-ray microscopes provide higher resolution than visible light microscopes. Wet, biological materials with a water thickness of up to about 10 μm can be imaged with good contrast using soft X-rays with wavelengths between the oxygen and carbon absorption edges (at 24 and 43 Å). The Stony Brook group has developed and operates a scanning transmission X-ray microscope (STXM) at the National Synchrotron Light Source (NSLS) at Brookhaven National Laboratory. The microscope is used for imaging with a current resolution of 50 nm, and for elemental and chemical state mapping. Radiation damage imposes a significant limitation upon high resolution X-ray microscopy of room temperature wet specimens. Experience from electron microscopy suggests that cryo techniques allow vitrified specimens to be imaged repeatedly. This is due to the increased radiation stability of biological specimens in the frozen hydrated state. Better radiation stability has been shown recently with a cryo transmission X-ray microscope developed by the University of Gottingen, operating at the BESSY storage ring in Berlin, Germany. At Stony Brook, we are developing a cryo scanning transmission X-ray microscope (CryoSTXM) to carry out imaging and spectra-microscopy experiments on frozen hydrated specimens. This article will give an outlook onto the research projects that we plan to perform using the CryoSTXM

Ricerche archeologiche ad Altojanni (Grottole – MT) e nel suo territorio. Rapporto preliminare

Si presentano i nuovi dati della ricerche effettuate dalla Scuola di Specializzazione in Archeologia di Matera nella Valle del Bradano nel territorio dell'insediamento medievale di Altojanni, portando l'attenzione sulle trasformazioni del paesaggio agrario tra età arcaica e medioev

Non-Destructive Multi-Analytical Approach to Study the Pigments of Wall Painting Fragments Reused in Mortars from the Archaeological Site of Pompeii (Italy)

During the excavations carried out in Via di Mercurio (Regio VI, 9, 3) in Pompeii, in 2015, some red, green, black, and brown wall painting fragments were found in the preparatory layer of an ancient pavement which was probably built after the 62 AD earthquake. These fragments, derived from the rubble, were used as coarse aggregate to prepare the mortar for building the pavement. The wall painting fragments are exceptionally well preserved, which is an uncommon occurrence in the city of Pompeii. However, as they were enclosed in the mortar, the wall painting fragments were protected from the high temperatures (probably ranging between 180 ◦C and 380 ◦C) produced by the eruption in 79 AD. The pigmented outer surface of each sample was analyzed using a non-destructive multi-analytical approach, by combining spectrophotometric colorimetry and portable X-ray fluorescence with micro-Raman spectroscopy. The compositional characterization of the samples revealed the presence of cuprorivaite, goethite, and celadonite in the green pigments; hematite in the red pigments; goethite in the brown pigment; and charcoal in the black pigment. These data probably provide us with the most "faithful picture" of the various red, green, black, and brown pigments used in Pompeii prior to the 79 AD eruptio

Il cesarino ovvero dell'arte di caualcare : dialogo

Port. orladaERM

New insights to assess the consolidation of stone materials used in built heritage: the case study of ancient graffiti (Tituli Picti) in the archaeological site of Pompeii

Abstract Tituli Picti are an ancient form of urban graffiti very common in the archaeological site of Pompeii (Naples, South—Italy). They are generally made of red pigments applied on walls of Campanian ignimbrite. This paper deals with a scientific investigation aimed to their conservation. This is a challenging task since it requires a multidisciplinary approach that includes restorers, archaeologists and conservation scientists. The study has provided suggestions on the proper way to conserve Tituli Picti over time. In the present work, several specimens of Campanian ignimbrite were painted with red earth pigment; lime and Arabic gum have been used as binders as well. Such painted stones were treated with three consolidants: a suspension of reactive nanoparticles of silica, ethyl silicate and an acrylic microemulsion. Treated and untreated specimens were subjected to thermal aging, artificial solar radiation and induced crystallization decay. It has been assessed the colorimetric variations induced by treatments. Moreover, the micromorphologic features of the consolidated surfaces have been highlighted by means of electron microscope observations. The scotch tape test allowed to compare the superficial cohesion induced by the three used products. According to the results, ethyl silicate seems to represent the most successful product