807 research outputs found

    Anthropic pressures on Nature 2000 Sites: recommendations and monitoring criteria for the pollution emergency response activities within the Orbetello lagoon

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    L’elevato valore naturalistico e socioeconomico di un Sito Natura 2000 richiede che tutte le attività antropiche che si svolgono al suo interno (es. pesca, turismo, trasporti, attività industriali, etc.) siano gestite in maniera tale da non pregiudicare le specie e gli habitat per i quali l’area è stata designata. Molti di questi Siti sono ambienti di transizione, ovvero zone che costituiscono il passaggio naturale tra terra e mare. La loro posizione di interfaccia tra questi due ambienti li rende ecosistemi unici e biologicamente molto produttivi, sede di meccanismi di regolazione dei processi interattivi della biosfera nelle due fasi, terrestre e marina. In alcuni Siti la presenza di attività antropiche diffuse e prolungate nel tempo ha portato al riscontro di stati di contaminazione elevata, fino all’inclusione di queste zone, o parti di esse, tra i Siti di bonifica di Interesse Nazionale (SIN). Il presente lavoro descrive le linee di indirizzo e le attività di monitoraggio da attuare per la salvaguardia della salute pubblica e dell’ambiente nel corso degli interventi di messa in sicurezza di emergenza predisposti nell’area lagunare antistante l’area industriale Ex Sitoco, all’interno della perimetrazione del SIN di Orbetello, incluso in un Sito di Importanza Comunitaria. Le matrici ambientali potenzialmente a rischio a causa dell’esecuzione di tali interventi sono: acqua, sedimento, biocenosi acquatiche, avifauna, uomo. È altresì importante valutare gli effetti che le ipotetiche modifiche su microscala, apportate a livello di ogni matrice, potrebbero causare nel lungo periodo su macroscala.The high naturalistic and socio-economic value of Natura 2000 sites requires that all human activities performed within their borders (e.g. fishing, tourism, transports, industrial activities) are regulated. Indeed, the site management should assure the effective safeguard of all species and habitats of European interest included in the protected area. A lot of such sites are located in transitional environments, that are areas characterised by a natural progression from the terrestrial to the water environments. Such environments include unique and very productive habitats, and they represent the regulation mechanisms of the interactive processes of the terrestrial and marine biosphere. In some sites, the presence of human activities that are distributed both in space and time has led to high levels of contamination, that in some cases even required their inclusion in Reclamation Sites of National Interest (SIN). The present study describes the planning and monitoring activities to be performed in order to safeguard human and environment health during the actions of MISE in the lagoonal area in front of the industrial area Ex Sitoco, within the borders of the Orbetello SIN, included in a SCI. The environmental parameters that are potentially at risk due to such activities are: water, sediment, water biocenosis, birds, humans. Furthermore, it is important to evaluate the effects that potential variations at the microscale level may cause at the macroscale level

    A comprehensive methodology for computational fluid dynamics combustion modeling of industrial diesel engines

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    Combustion control and optimization is of great importance to meet future emission standards in diesel engines: increase in break mean effective pressure at high loads and extension of the operating range of advanced combustion modes seem to be the most promising solutions to reduce fuel consumption and pollutant emissions at the same time. Within this context, detailed computational fluid dynamics tools are required to predict the different involved phenomena such as fuel-air mixing, unsteady diffusion combustion and formation of noxious species. Detailed kinetics, consistent spray models and high quality grids are necessary to perform predictive simulations which can be used either for design or diagnostic purposes. In this work, the authors present a comprehensive approach which was developed using an open-source computational fluid dynamics code. To minimize the pre-processing time and preserve results' accuracy, algorithms for automatic mesh generation of spray-oriented grids were developed and successfully applied to different combustion chamber geometries. The Lagrangian approach was used to describe the spray evolution while the combustion process is modeled employing detailed chemistry and, eventually, considering turbulence-chemistry interaction. The proposed computational fluid dynamics methodology was first assessed considering inert and reacting experiments in a constant-volume vessel, where operating conditions typical of heavy-duty diesel engines were reproduced. Afterward, engine simulations were performed considering two different load points and two piston bowl geometries, respectively. Experimental validation was carried out by comparing computed and experimental data of in-cylinder pressure, heat release rate and pollutant emissions (NOx, CO and soot)

    FSHD muscular dystrophy Region Gene 1 binds Suv4-20h1 histone methyltransferase and impairs myogenesis

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    Facioscapulohumeral Muscular Dystrophy (FSHD) is an autosomal dominant myopathy with a strong epigenetic component. It is associated with deletion of a macrosatellite repeat leading to over-expression of the nearby genes. Among them, we focused on FSHD Region Gene 1 (FRG1) since its over-expression in mice, X. laevis and C. elegans leads to muscular dystrophy-like defects, suggesting that FRG1 plays a relevant role in muscle biology. Here we show that, when overexpressed, FRG1 binds and interferes with the activity of the histone methyltransferase Suv4-20h1 both in mammals and Drosophila. Accordingly, FRG1 over-expression or Suv4-20h1 knockdown inhibits myogenesis. Moreover, Suv4-20h KO mice develop muscular dystrophy signs. Finally, we identify the FRG1/Suv4-20h1 target Eid3 as a novel myogenic inhibitor that contributes to the muscle differentiation defects. Our study suggests a novel role of FRG1 as epigenetic regulator of muscle differentiation and indicates that Suv4-20h1 has a gene-specific function in myogenesis

    MANAJEMEN PEMBINAAN PERPUSTAKAAN KELURAHAN DI KOTA BANDUNG

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    Dinas Perpustakaan dan Kearsipan (Dispusip) Kota Bandung merupakan suatu bentuk dari perpustakaan umum yang memiliki fungsi membina perpustakaan. Pemberdayaan perpustakaan kelurahan di Kota Bandung saat ini belum terealisasi sesuai dengan jumlah kelurahan yang terdapat di kota Bandung sebanyak 151 kelurahan. Perpustakaan kelurahan dapat menjalankan fungsinya dengan baik sesuai dengan fungsi perpustakaan dengan penerapan fungsi manajemen perpustakaan. Masalah yang menjadi kajian pada penelitian ini bagaimana implementasi manajemen pembinaan perpustakaan kelurahan di Kota Bandung oleh Dispusip Kota Bandung. Tujuan penelitian ini yaitu untuk mendeskripsikan mengenai perencanaan, pengorganisasian, penggerakan dan pengawasan pembinaan perpustakaan kelurahan oleh Dispusip Kota Bandung. Metode yang digunakan pada penelitian ini adalah metode kualitatif dengan pendekatan studi kasus. Partisipan dalam penelitian ini terdiri atas tiga informan yang bertindak sebagai pustakawan dan key informan sebagai Kepala Bidang Pengembangan Perpustakaan dan Kearsipan menggunakan teknik purposive sampling. Instrumen penelitian yang digunakan adalah wawancara, observasi dan studi dokumentasi. Teknik analisis data yang digunakan adalah data reduction, data display, dan conclusion drawing (verification). Berdasarkan hasil penelitian yaitu sebuah konstuksi model manajemen pembinaan perpustakaan kelurahan yang menunjukkan bahwa kegiatan pembinaan perpustakaan kelurahan oleh Dispusip Kota Bandung relevan dengan fungsi manajemen. Fungsi perencanaan, pengorganisasian, penggerakan kegiatan manajemen pembinaan perpustakaan kelurahan di Kota Bandung terealisasi cukup baik. Namun pada fungsi pengawasan belum berjalan secara optimal, hal ini dikarenakan oleh keterbatasan sumber daya manusia yang dimiliki oleh Dispusip Kota Bandung. Program pembinaan ini diharapkan dapat mewujudkan penyelenggaraan perpustakaan kelurahan dan dapat memberikan kontribusi terhadap perbaikan/ penyempurnaan manajemen pembinaan perpustakaan oleh Dispusip Kota Bandung. ;--- Dinas Perpustakaan dan Kearsipan (Dispusip) Kota Bandung is a form of public library, which function is to develop urban village libraries. Currently, the empowerment of urban village libraries in 151 village in Bandung City is not realized yet. Urban village libraries can perform its functions properly in accordance with the implementation of library management functions. The problem of this study is how Dispusip Kota Bandung manages the implementation of urban village libraries coaching in Bandung City. The purpose of this study is to describe the planning, organizing, actuating, and controlling of urban village libraries coaching by Dispusip Kota Bandung. The research method used in this study is qualitative method with a case study approach. The subjects of this study consist of three informants who act as a librarian and a key informant as a Head of Library and Archive Development by using purposive sampling technique. The research instruments used in this study are interviews, observations, and documentation studies. This study uses data analysis technique of data reduction, data display, and conclusion drawing (verification). Based on the study of a model construction of urban village libraries coaching, the result is that the coaching activities of urban village libraries done by Dispusip Kota Bandung is relevant to the management functions. The functions of planning, organizing, and actuating of village libraries coaching activities in Bandung City are realized quite well. However, the function of controlling has not run optimally. This is due to the limitations of human resources owned by Dispusip Kota Bandung. This coaching program is expected to be able to realize the enforcement of urban village libraries and to give contribution to the improvement of library coaching management done by Dispusip Kota Bandung

    Renal infarction due to polyarteritis nodosa in a patient with angioimmunoblastic T-cell lymphoma: a case report and a brief review of the literature.

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    ABSTRACT: Angioimmunoblastic T-cell lymphoma (AITL) is one of the most common subtypes of peripheral T-cell lymphoma (15-20% of all cases), accounting for approximately 1-2% of all non-Hodgkin lymphomas. It often presents autoimmune phenomena including hemolytic anemia, thrombocytopenia, glomerulonephrities and circulating immune complexes (CIC). Polyarteritis nodosa (PAN) is an autoimmune disease characterized by necrotizing vasculitis of medium vessels, which rarely develops in association with hematological malignant disorders. Herein we report the case of a male patient with AITL who had a renal infarction secondary to PAN, mimicking a neoplastic lesion. A 40-year-old man underwent lymph node biopsy in the suspicious of sarcoidosis. On the basis of histological and immunohistochemical findings, a diagnosis of AITL was performed. The patient was successfully treated with a cytarabine-based regimen for 6 cycles. Three months after the initial diagnosis of AITL, a whole body CT-scan showed a lesion in the lower pole of the left kidney. A renal cell carcinoma was suspected, thus a nephrectomy was carried out. The histological findings were compatible with polyarteritis nodosa. To the best of our knowledge, the association between PAN and AITL has been described only once. This relation may be secondary to the induction of an autoimmune phenomenon by the lymphoma with the formation of circulating immune complexes, leading to vessel walls injury. A careful evaluation is needed in the management of AITL patients with signs of renal failure in order to avoid delay of treatment and organ damage

    Exercise respiratory cycle time components in patients with emphysema

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    Background: We have recently demonstrated that in patients with COPD the severity of emphysema (E) measured by high resolution computed tomography (HRCT) correlated with: ratio VTpeak/FEV1; VE/VCO2 slope and PETCO2 values at peak exercise. The aim of this study was to further investigate if exercise respiratory cycle time components correlated with % of E measured by HRCT. Method: Twelve patients (age = 65±8 yrs; FEV1 = 55±17%pred) with moderate to severe E (quantified by lung HRCT as % voxels < −910 HU) were evaluated with incremental cardiopulmonary exercise testing (CPET). Mean inspiratory time (TiM), mean total respiratory cycle time (TtotM), mean expiratory time during exercise (TeM) and mean expiratory time during the last third of exercise (TeM-end), has been calculated. Results: Both TeM and TeM-end had a good linear correlation with % of E (r = 0,61; p = 0,004 and r = 0,63; p = 0,003). Moreover, by dividing the patients in two groups based on the % of E (>50% and <50%), we observed that patients with higher % of E had longer TeM (TeM: 1,72±0,26sec vs 1,34±0,27sec, p = 0,005) and TeM-end. A good linear correlation has been observed also between TeM and PETCO2 and VE/VCO2 (r = 0,64; p = 0,002 and r = 0,7; p = 0,0005). TeM did not correlated with resting lung function values or inspiratory capacity (IC). Conclusion: The data confirm that distinct physiologic response pattern can be detected at CPET in these patients

    Chemical Composition of PM10 at Urban Sites in Naples (Italy)

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    Here, we report the chemical characterization and identification of the possible sources of particulate matter (fraction PM10) at two different sites in Naples. PM10 concentration and its chemicalcompositionwerestudiedusingthecrustalenrichmentfactor(EF)andprincipalcomponent analysis (PCA). In all of the seasons, the PM10 levels, were significantly higher (p 0.8) was obtained between reconstructed mass and gravimetric mass. PCA analysis explained 76% and 79% of the variance in NA01 and NA02, respectively. The emission sources were the same for both sites; but, the location of the site, the different distances from the sources and the presence and absence of vegetation proved the different concentrations and compositions of PM10

    Visually-Enabled Active Deep Learning for (Geo) Text and Image Classification: A Review

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    This paper investigates recent research on active learning for (geo) text and image classification, with an emphasis on methods that combine visual analytics and/or deep learning. Deep learning has attracted substantial attention across many domains of science and practice, because it can find intricate patterns in big data; but successful application of the methods requires a big set of labeled data. Active learning, which has the potential to address the data labeling challenge, has already had success in geospatial applications such as trajectory classification from movement data and (geo) text and image classification. This review is intended to be particularly relevant for extension of these methods to GISience, to support work in domains such as geographic information retrieval from text and image repositories, interpretation of spatial language, and related geo-semantics challenges. Specifically, to provide a structure for leveraging recent advances, we group the relevant work into five categories: active learning, visual analytics, active learning with visual analytics, active deep learning, plus GIScience and Remote Sensing (RS) using active learning and active deep learning. Each category is exemplified by recent influential work. Based on this framing and our systematic review of key research, we then discuss some of the main challenges of integrating active learning with visual analytics and deep learning, and point out research opportunities from technical and application perspectives-for application-based opportunities, with emphasis on those that address big data with geospatial components

    Cortico-thalamic development and disease: From cells, to circuits, to schizophrenia

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    The human brain is the most complex structure generated during development. Unveiling the ontogenesis and the intrinsic organization of specific neural networks may represent a key to understanding the physio-pathological aspects of different brain areas. The cortico-thalamic and thalamo-cortical (CT-TC) circuits process and modulate essential tasks such as wakefulness, sleep and memory, and their alterations may result in neurodevelopmental and psychiatric disorders. These pathologies are reported to affect specific neural populations but may also broadly alter physiological connections and thus dysregulate brain network generation, communication, and function. More specifically, the CT-TC system is reported to be severely affected in disorders impacting superior brain functions, such as schizophrenia (SCZ), bipolar disorder, autism spectrum disorders or epilepsy. In this review, the focus will be on CT development, and the models exploited to uncover and comprehend its molecular and cellular mechanisms. In parallel to animal models, still fundamental to unveil human neural network establishment, advanced in vitro platforms, such as brain organoids derived from human pluripotent stem cells, will be discussed. Indeed, organoids and assembloids represent unique tools to study and accelerate fundamental research in CT development and its dysfunctions. We will then discuss recent cutting-edge contributions, including in silico approaches, concerning ontogenesis, specification, and function of the CT-TC circuitry that generates connectivity maps in physiological and pathological conditions
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