26 research outputs found
IFE Plant Technology Overview and contribution to HiPER proposal
HiPER is the European Project for Laser Fusion that has been able to join 26 institutions and signed under formal government agreement by 6 countries inside the ESFRI Program of the European Union (EU). The project is already extended by EU for two years more (until 2013) after its first preparatory phase from 2008. A large work has been developed in different areas to arrive to a design of repetitive operation of Laser Fusion Reactor, and decisions are envisioned in the next phase of Technology Development or Risk Reduction for Engineering or Power Plant facilities (or both). Chamber design has been very much completed for Engineering phase and starting of preliminary options for Reactor Power Plant have been established and review here
The Olive Ridley Project (ORP): a successful example of how to engage researchers, conservation practitioners and civil society
The Olive Ridley Project (ORP) was set up to protect sea turtles and their habitats. The project was formed in 2013, and it became a registered charity in the UK in 2016. From its inception, ORP took a multidisciplinary approach to achieve its goals. Part of its objectives, and the reason why the charity came to fruition, are related to the issue of olive ridley sea turtle (Lepidochelys olivacea) entanglement in abandoned, lost or discarded fishing gear (also known as ‘ghost gear’ or ‘ghost nets’), and the search for ghost gear and turtle entanglement ‘hot spots’ throughout the Indian Ocean. The initial ORP research questions were soon challenged by societal interests to develop inclusive educational programmes in local communities and tourist resorts that could raise awareness about the need for conservation of all sea turtle species. In February 2017, ORP opened the first veterinarian-run, fully equipped Marine Turtle Rescue Centre in the Maldives, bringing together the work of researchers, citizen scientists, volunteers, environmentalists, marine biologists and veterinarians. The present work of ORP sits on a strong and scientifically robust collaborative plan. Current ORP research projects range from sea turtle population analyses, spatial ecology, rehabilitation of injured and sick individuals, epibiont parasite analyses, precise turtle identification through photo-ID research, linking ghost gear to responsible fisheries, and analyses of ghost gear drift patterns. The programme enhances community education and outreach by engaging schoolchildren, organizing workshops, promoting sustainable use of ghost gear waste, and training citizen scientists and local fishing communities. The ORP programme encompasses many principles of research engagement, effectively combining scientific knowledge, education and action. This article explores all stages of the process (from research planning and design, to knowledge exchange and inter- and trans-disciplinary impact assessments), describing the active engagement originated by the ORP initiative. A reflective insight into the learning, enrichment and challenges of engaging researchers and community actors is also included, considering the current social and scientific framework
Recurrent presence of the PLCG1 S345F mutation in nodal peripheral T-cell lymphomas
This work was supported by grants from Asociación
Española contra el Cancer (AECC), Ministerio de Economía y
Competitividad (MINECO) (SAF2013-47416-R), Instituto Salud
Carlos III (ISCIII) – Fondos FEDER, MINECO-AES(RD012/0036/0060, PI10/00621, CP11/00018). RM is supported
by the Fundación Conchita Rábago de la Fundación Jiménez Díaz,
Madrid (Spain). JG-R is supported by a predoctoral grant from the
Fundacion Investigacion Biomedica Puerta de Hierro. Salary support to
SG is provided by ISCIII-FEDER (CP11/00018). MS-B is supported
by a Miguel Servet contract from ISCIII-FEDER (CP11/00018). The
Instituto de Investigación Marqués de Valdecilla (IDIVAL) is partly
funded by the Sociedad para el Desarrollo Regional de Cantabria
(SODERCAN)
Rotating biological contactors : a review on main factors affecting performance
Rotating biological contactors (RBCs)
constitute a very unique and superior alternative
for biodegradable matter and nitrogen removal on
account of their feasibility, simplicity of design and
operation, short start-up, low land area requirement,
low energy consumption, low operating and maintenance
cost and treatment efficiency. The present
review of RBCs focus on parameters that affect
performance like rotational speed, organic and
hydraulic loading rates, retention time, biofilm support
media, staging, temperature, influent wastewater
characteristics, biofilm characteristics, dissolved oxygen
levels, effluent and solids recirculation, stepfeeding
and medium submergence. Some RBCs
scale-up and design considerations, operational problems
and comparison with other wastewater treatment
systems are also reported.Fundação para a Ciência e a Tecnologia (FCT
Chronic lymphocytic leukemia cells in lymph nodes show frequent NOTCH1 activation
Chronic lymphocytic leukemia (CLL) is the most common adult leukemia in the Western world. Pathogenic mechanisms involve multiple external events (such as microenvironmental and antigenic stimuli) and internal events (genetic and epigenetic alterations) that are associated with the transformation, progression and evolution of CLL. CLL is characterized by an accumulation of mature B cells in peripheral blood, bone marrow and lymphoid tissues. Extracellular stimuli play an important role in the development and maintenance of neoplastic cells. B-CLL cells proliferate and activate pathogenic signaling pathways in anatomical structures known as proliferation centers, which are usually more conspicuous in involved lymph nodes.1 Its clinical course is quite heterogeneous, whereby some patients progress rapidly and have short survival, whereas others have a more stable clinical course that may not need treatment for years.This work was supported by grants from the Ministerio de Economía y Competitividad (MINECO) (SAF2013-47416-R) Instituto de Salud Carlos III (ISCIII)- FEDER – MINECO- AES (CP11/00018, PI10/00621, RD012/0036/0060), and Asociación Española contra el Cancer (AECC). MS-B is supported by a Miguel Servet contract from ISCIII-FEDER (CP11/00018). Salary support to SG is provided by CP11/00018, from ISCIII-FEDER. JG-R is supported by a predoctoral grant from the Fundación Investigación Puerta de Hierro.S
Defining functional diversity for lignocellulose degradation in a microbial community using multi-omics studies
Abstract\ud
\ud
Background\ud
Lignocellulose is one of the most abundant forms of fixed carbon in the biosphere. Current industrial approaches to the degradation of lignocellulose employ enzyme mixtures, usually from a single fungal species, which are only effective in hydrolyzing polysaccharides following biomass pre-treatments. While the enzymatic mechanisms of lignocellulose degradation have been characterized in detail in individual microbial species, the microbial communities that efficiently breakdown plant materials in nature are species rich and secrete a myriad of enzymes to perform “community-level” metabolism of lignocellulose. Single-species approaches are, therefore, likely to miss important aspects of lignocellulose degradation that will be central to optimizing commercial processes.\ud
\ud
\ud
Results\ud
Here, we investigated the microbial degradation of wheat straw in liquid cultures that had been inoculated with wheat straw compost. Samples taken at selected time points were subjected to multi-omics analysis with the aim of identifying new microbial mechanisms for lignocellulose degradation that could be applied in industrial pre-treatment of feedstocks. Phylogenetic composition of the community, based on sequenced bacterial and eukaryotic ribosomal genes, showed a gradual decrease in complexity and diversity over time due to microbial enrichment. Taxonomic affiliation of bacterial species showed dominance of Bacteroidetes and Proteobacteria and high relative abundance of genera Asticcacaulis, Leadbetterella and Truepera. The eukaryotic members of the community were enriched in peritrich ciliates from genus Telotrochidium that thrived in the liquid cultures compared to fungal species that were present in low abundance. A targeted metasecretome approach combined with metatranscriptomics analysis, identified 1127 proteins and showed the presence of numerous carbohydrate-active enzymes extracted from the biomass-bound fractions and from the culture supernatant. This revealed a wide array of hydrolytic cellulases, hemicellulases and carbohydrate-binding modules involved in lignocellulose degradation. The expression of these activities correlated to the changes in the biomass composition observed by FTIR and ssNMR measurements.\ud
\ud
\ud
Conclusions\ud
A combination of mass spectrometry-based proteomics coupled with metatranscriptomics has enabled the identification of a large number of lignocellulose degrading enzymes that can now be further explored for the development of improved enzyme cocktails for the treatment of plant-based feedstocks. In addition to the expected carbohydrate-active enzymes, our studies reveal a large number of unknown proteins, some of which may play a crucial role in community-based lignocellulose degradation.This work was funded by Biotechnology and Biological Sciences Research\ud
Council (BBSRC) Grants BB/1018492/1, BB/K020358/1 and BB/P027717/1, the\ud
BBSRC Network in Biotechnology and Bioenergy BIOCATNET and São Paulo\ud
Research Foundation (FAPESP) Grant 10/52362-5. ERdA thanks EMBRAPA\ud
Instrumentation São Carlos and Dr. Luiz Alberto Colnago for providing the\ud
NMR facility and CNPq Grant 312852/2014-2. The authors would like to thank\ud
Deborah Rathbone and Susan Heywood from the Biorenewables Develop‑\ud
ment Centre for technical assistance in rRNA amplicon sequencing
Beyond the "Code": A Guide to the Description and Documentation of Biodiversity in Ciliated Protists (Alveolata, Ciliophora)
© 2017 The International Society of Protistologists.Recent advances in molecular technology have revolutionized research on all aspects of the biology of organisms, including ciliates, and created unprecedented opportunities for pursuing a more integrative approach to investigations of biodiversity. However, this goal is complicated by large gaps and inconsistencies that still exist in the foundation of basic information about biodiversity of ciliates. The present paper reviews issues relating to the taxonomy of ciliates and presents specific recommendations for best practice in the observation and documentation of their biodiversity. This effort stems from a workshop that explored ways to implement six Grand Challenges proposed by the International Research Coordination Network for Biodiversity of Ciliates (IRCN-BC). As part of its commitment to strengthening the knowledge base that supports research on biodiversity of ciliates, the IRCN-BC proposes to populate The Ciliate Guide, an online database, with biodiversity-related data and metadata to create a resource that will facilitate accurate taxonomic identifications and promote sharing of data
The anti-fibrotic effect of liver growth factor is associated with decreased intrahepatic levels of matrix metalloproteinases 2 and 9 and transforming growth factor beta 1 in bile duct-ligated rats
Liver growth factor (LGF), a mitogen for
liver cells, behaves as an anti-fibrotic agent even in
extrahepatic sites, but its mechanistic basis is unknown.
We aimed to determine the intrahepatic expression
pattern of key modulators of liver fibrosis in bile ductligated
rats (BDL) after injection of LGF. BDL rats
received either LGF (4.5 μg/ratXdose, two doses/week,
at time 0 or 2 or 5w after operation, depending on the
group (BDL+LGF groups, n=20) or saline (BDL+S
groups, n=20). Groups were compared in terms of
fibrosis (histomorphometry), liver function (aminopyrine
breath test), matrix metalloproteinases MMP-2 and
MMP-9, transforming growth factor beta 1 (TGF-ß1)
and liver endoglin content (Western blotting), and serum
tissue inhibitor of metalloproteinases 1 (TIMP-1) levels
(ELISA). In BDL+LGF rats, the fibrotic index was
significantly lower at 5w, p=0.006, and at 8w, p=0.04,
than in BDL+S rats. Liver function values in BDL+LGF
rats were higher than those obtained in BDL+S rats
(80% at 5w and 79% at 8w, versus 38% and 29%,
p<0.01, taking healthy controls as 100%). Notably, in
BDL+LGF rats the intrahepatic expression levels of both
MMPs were lower at 2w (MMP-2, p=0.03; MMP-9,
p=0.05) and 5w (MMP-2, p=0.05, MMP-9, p=0.04). In
addition, the hepatic TGF-ß1 level in BDL+LGF rats
was lower at 2w (36%, p=0.008), 5w (50%) and 8wk
(37%), whereas intrahepatic endoglin expression
remained constant in all BDL rats studied. LGF
ameliorates liver fibrosis and improves liver function in
BDL rats. The LGF-induced anti-fibrotic effect is
associated with a decreased hepatic level of MMP-2,
MMP-9 and TGF-ß1 in fibrotic rats
Liver growth factor antifibrotic activity in vivo is associated with a decrease in activation of hepatic stellate cells
The antifibrotic activity of Liver Growth
Factor (LGF), a liver mitogen, was previously
demonstrated in several models of rat liver fibrosis and
even in extrahepatic sites, such as carotid artery in
hypertensive rats and rat CdCl2-induced lung fibrosis. In
the present study, we have attempted to examine in depth
its mechanism of antifibrotic action in bile duct-ligated
(BDL) rats, with special emphasis on its activity in
fibrogenic liver cells.
BDL rats received either LGF 9 μg/week for 2 or 3
weeks (BDL+LGF, n=20/group) or saline (BDL+S,
n=20/group), at times 0, week 2, or week 5 after
operation. Groups were compared in terms of liver a-
smooth muscle actin (SMA) content (western blotting
and immunohistochemistry), hepatic apoptosis, liver
desmin content (western blotting), and serum
endothelin-1 (ELISA).
LGF produced a marked decrease in liver a-SMA
content compared with saline-injected rats, especially
evident at longer times (5w and 8w; p<0.05),
accompanied by a decrease in hepatic a-SMA+ cells. This decrease was not due to the killing of activated
hepatic stellate cells (HSC) or myofibroblasts by LGF,
since there was a slight decrease in hepatic apoptosis
that was more evident at 2w (p<0.05). Moreover, LGF
did not seem to influence HSC proliferation, as shown
by measuring liver desmin content. The antifibrotic
activity exerted by LGF seems to be closely related to a
modulation of the activation state of fibrogenic liver
cells (activated HSC and myofibroblasts) in BDL rats