Trophic status and phytoplankton in Lake Bidighinzu

From March 1988 to April 1989 a survey was carried out on the phytoplankton of Lake Bidighinzu, a hypertrophic reservoir in Northern Sardinia. The purpose of this work was to assess the general limnological conditions of the reservoir after a diversion of the urban and industrial wastes. The dynamics of chlorophyll a, and the structure and composition of the phytoplankton density and of its biomass in the study period were determined. Moreover the found trends for trasparency, temperature, conductivity, alkalinity, pH, dissolved oxygen, reactive and total phosphorus, nitrate, nitrite, ammonium nitrogen, and reactive silica are reported. The effect of water aeration on the dynamics of the other parameters is discussed

Avoidant/Restrictive Food Intake Disorder. A longitudinal study of malnutrition and psychopathological risk factors from 2 to 11 years of age

Aim: To evaluate different types and degrees of malnutrition over time in a sample of children diagnosed with Infantile Anorexia (IA), based on the DC:0-3R criteria, and recently defined by DSM-5 as the first subtype of Avoidant/Restrictive Food Intake Disorder (ARFID), and to investigate the relationship between children’s severity of malnutrition and emotional/behavioral development, and mothers’ long-term psychopathological symptoms. Methods: A total of 113 children (58 boys, 55 girls), originally diagnosed with IA, and their mothers, were evaluated at four assessment points at the children’s mean age of 2, 5, 7, and 11 years. Several measures were used to assess the children’s growth and level of malnutrition, mothers’ psychopathological symptoms and eating attitudes, as well as their children’s emotional/behavioral functioning. Results: A steady improvement in the severity of malnutrition over time emerged, but 73% of children still had ongoing mild to moderate to severe malnutrition at 11 years of age. Moreover, the children showed increasing internalizing and externalizing emotional/behavioral problems, and their mothers’ psychopathological symptoms and eating problems worsened as well over time. At 11 years of age, the girls’ emotional/behavioral problems and their mothers’ psychopathology and disturbed eating attitudes were more severe than that of the boys and their mothers. Finally, during the last assessment, significant associations between the mothers’ psychopathology and disturbed eating attitudes, the severity of the children’s malnutrition, and their emotional/behavioral problems emerged. Discussion: Our longitudinal study points out that the developmental course of children, originally diagnosed with IA and who received limited psychosocial treatment, is characterized by an enduring risk of malnutrition and increasing psychopathological symptoms in both, the children and their mothers, up to the sensitive period of pre-pubert

<i>Mycobacterium avium</i> subspecies <i>paratuberculosis</i> bacteremia in type 1 diabetes mellitus: an infectious trigger?

Mycobacterium avium subspecies paratuberculosis (MAP) is the established cause of paratuberculosis in ruminants (i.e., Johne disease). The bacterium is shed in the milk of infected cows and survives pasteurization. Recently, an association between MAP and Crohn disease has been suggested, wherein MAP has been found to persist in a cell wall–deficient form, escaping clearance by the host immune system

Lo Stato trofico dello stagno di Casaraccio (Sardegna settentrionale)

Monthly change of chemical and biological features in coastal brackish pond of Casaraccio have been investigated. Peak concentrations of total phosphorus (15 mg P m-3), nitrate nitrogen (50 mg N m-3) and ammonia nitrogen (130 mg N m-3) are low. Peak values of chlorophyll a (4 mg m-3) and average biomass macrophytes of the pond (120 g m-2) are also low, in spite of the fact that the crop of benthic macrophytes are very high (400 g m-2) in some parts of the pond. The resuls of this research represent a starting point for the evaluation of future possible changes which may derive by the implementation of new industrial aquaculture development

Lo Stato trofico di alcuni stagni salmastri costieri della Sardegna

Twelve coastal brackish ponds of Sardinia were examined three-four times during a year in relation to their trophic level. Seven parameters were measured including phosphorus, nitrogen, algal pigments and biomass of macrophytes. Considerable amount of algal nutrients, chlorophyll a and macrophytes, biomass were present in many ponds. Five ponds are proposed as hypereutrophic, four as eutrophic and three as oligotrophic

La Sardegna negli "anni della Rinascita"

Sommario: 1. La Sardegna negli anni Cinquanta. - 2. Il dibattito sul Piano di Rinascita. - 3. La legge 588 e i piani di attuazione della Rinascita. - 4. Il "fallimento" del Piano. - 5. Il problema del banditismo. - 6. La Commissione d'inchiesta Medici e la legge 268

L'Alimentazione popolare

Studio sulla cultura del mangiare in Sardegna: la ricchezza delle pietanze, i sapori e le bevande, tutte tradizioni che negli ultimi trent'anni sono state sottoposte ad un processo di standardizzazione che tocca aspetti un tempo sacri e inviolabili

Le Problematiche legate al fitoplancton nelle acque lacustri destinate ad uso potabile

The problem of the algal interference with water treatment processes is discussed. The levels of removal of algae in some treatment plants of Sardinia (Italy) are presented. Il presente studio indaga il problema dell'interferenza algale nei processi di trattamento delle acque. Si presentano inoltre i livelli di rimozione delle alghe in alcuni impianti di trattamento in Sardegna (Italia)

Lo Stato trofico dello stagno di Pilo (Sardegna settentrionale)

Seasonal changes of nutrient concentrations and other chemical and biological parameters in Pilo's brackish pond were investigated to asses its trophic level. The pond shows eutrophic conditions. In the whole pond the mean biomass value of submersed macrophytes is high (500 g m-2). There is a large range of seasonal variations of total alcalinity concentrations (1,2-5 meq l-l), oxygen saturation (65-120%) and pH values (8-10). Nevertheless the mean concentrations of nitrate nitrogen (30 mg m-3), ammonia nitrogen (50 mg m-3), total phosphorus (17 mg m-3) and chlorophyll a (5 mg m-3) are low, as well as the phytoplankton biomass, (0,5 cm3 m-3)

Athyrmata fenicio-punici: la documentazione di Sulcis (CA)

Athyrmata erano chiamati dagli antichi Greci gli ornamenti personali nonchè la tipica merce di scambio dei Fenici, che si rinviene principalemente in contesti funerari o santuariali. Nel presente lavoro verrà presa in esame la documentazione del centro fenicio-punico di Sant'Antioco (antica Sulcis) in Sardegna (VIII-III sec. a.C.). Sarà fornito un elenco di tutti gli oggetti sinora editi e uno studio analitico di quelli rinvenuti recentemente in sei tombe puniche. Sarà quindi analizzata l'intera documentazione sotto tre aspetti fondamentali: l'uso, la produzione e gli scambi