Ecohydraulics. Environmental Flow Assessment and river restoration. Habitat suitability models for fish and aquatic invertebrates. Studies of habitat-biota relationships at microhabitat, mesohabitat and macrohabitat (distribution) scale.
Application and adaptation of the physical habitat simulation and habitat analyses in rivers and wetlands of different regions of the globe.
Ecological modelling. Statistical techniques and machine learning are used to develop habitat suitability models for native, non-native and invasive fish species, as well as for macroinvertebrate's taxa.
Modelling relations between Flow regime and Riparian vegetation.
Occurrence patterns of alien freshwater turtles in a large urban pond 'Archip...Maria Paola Di Santo
The patterns of the occurrence and distribution of alien freshwater turtle species in an urban pond archipelago (Rome, Italy) were analysed, with the aim of exploring the role of a set of factors (type of ponds, landscape context, size area, distance from the nearest road) with a generalized linear model approach. A total of 311 ponds subdivided in three types (fountains, small basins, lakes) embedded in different landscape contexts (public parks, private parks, urban areas) at differing distances from the nearest road were sampled. Six non-native freshwater turtle species in 31 sites were recorded (9.97%). Lakes exhibited the highest occurrence rates of alien freshwater turtles, compared to small basins and fountains. Freshwater turtle species in urbanized areas were only observed in parks (both public and private). In both the public and private parks, the lakes exhibited the highest percentage of occupied sites, with fountains being the lowest. A direct and significant relationship was observed between pond size and species richness. The distance from the nearest road did not appear to affect species richness. A first interpretation of the data from this study facilitated the postulation of two a posteriori hypotheses that should be tested, as follows: (i) the causal process of turtle release is random, and the rate of extinction (and recapture) is higher in smaller ponds, thus producing the observed pattern; and (ii) the turtle release is not random, and people actively select the ponds they consider more suitable for their pet animals. In this study, it appears the lakes were perceived by those who abandon their pets as the most ecologically suitable habitats among other pond types to accommodate the different species of turtles. Knowledge of people's attitudes in regard to releasing pet animals also might assist managers of public green spaces to develop strategies aimed to preserve local biodiversity, and to educate the public about the conservation issue represented by the alien species.
SWaRMA_IRBM_Module2_#1, Tools and approaches for understanding biophysical dr...ICIMOD
This presentation is the part of 12-day (28 January–8 February 2019) training workshop on “Multi-scale Integrated River Basin Management (IRBM) from the Hindu Kush Himalayan Perspective” organized by the Strengthening Water Resources Management in Afghanistan (SWaRMA) Initiative of the International Centre for Integrated Mountain Development (ICIMOD), and targeted at participants from Afghanistan.
Ecohydraulics. Environmental Flow Assessment and river restoration. Habitat suitability models for fish and aquatic invertebrates. Studies of habitat-biota relationships at microhabitat, mesohabitat and macrohabitat (distribution) scale.
Application and adaptation of the physical habitat simulation and habitat analyses in rivers and wetlands of different regions of the globe.
Ecological modelling. Statistical techniques and machine learning are used to develop habitat suitability models for native, non-native and invasive fish species, as well as for macroinvertebrate's taxa.
Modelling relations between Flow regime and Riparian vegetation.
Occurrence patterns of alien freshwater turtles in a large urban pond 'Archip...Maria Paola Di Santo
The patterns of the occurrence and distribution of alien freshwater turtle species in an urban pond archipelago (Rome, Italy) were analysed, with the aim of exploring the role of a set of factors (type of ponds, landscape context, size area, distance from the nearest road) with a generalized linear model approach. A total of 311 ponds subdivided in three types (fountains, small basins, lakes) embedded in different landscape contexts (public parks, private parks, urban areas) at differing distances from the nearest road were sampled. Six non-native freshwater turtle species in 31 sites were recorded (9.97%). Lakes exhibited the highest occurrence rates of alien freshwater turtles, compared to small basins and fountains. Freshwater turtle species in urbanized areas were only observed in parks (both public and private). In both the public and private parks, the lakes exhibited the highest percentage of occupied sites, with fountains being the lowest. A direct and significant relationship was observed between pond size and species richness. The distance from the nearest road did not appear to affect species richness. A first interpretation of the data from this study facilitated the postulation of two a posteriori hypotheses that should be tested, as follows: (i) the causal process of turtle release is random, and the rate of extinction (and recapture) is higher in smaller ponds, thus producing the observed pattern; and (ii) the turtle release is not random, and people actively select the ponds they consider more suitable for their pet animals. In this study, it appears the lakes were perceived by those who abandon their pets as the most ecologically suitable habitats among other pond types to accommodate the different species of turtles. Knowledge of people's attitudes in regard to releasing pet animals also might assist managers of public green spaces to develop strategies aimed to preserve local biodiversity, and to educate the public about the conservation issue represented by the alien species.
SWaRMA_IRBM_Module2_#1, Tools and approaches for understanding biophysical dr...ICIMOD
This presentation is the part of 12-day (28 January–8 February 2019) training workshop on “Multi-scale Integrated River Basin Management (IRBM) from the Hindu Kush Himalayan Perspective” organized by the Strengthening Water Resources Management in Afghanistan (SWaRMA) Initiative of the International Centre for Integrated Mountain Development (ICIMOD), and targeted at participants from Afghanistan.
Sasumua: linking a landscape and institutional mosaic to climate change in KenyaCIFOR-ICRAF
Presentation by Meine van Noordwijk & Thomas Yatich, ICRAF
Landscape approaches to mitigation and adaptation, Forest Day 3
Sunday, 13 December 2009
Copenhagen, Denmark
Dr Frédéric Ménard IRD - France : Basic knowledge on Sargassum and overview o...Région Guadeloupe
International conférence on sargassum
Thursday, October 24th, 2019
Day 1 - State of knowledge on Sargassum algae
State of knowledge - biological, ecological and oceanographic data
Fundamental knowledge about sargassum and related micro-organisms
----
Conférence Internationale sur les Sargasses
Jeudi 24 octobre - Journée 1
État des lieux sur la connaissance des algues sargasses
Table-ronde 1
Connaissance fondamentale des algues sargasses et des micro-organismes associés
The Ultra Violet Project in Henderson, Nevada: Reducing Public Health Infecti...John Whitehill, Jr., MPH
Community water treatment has been used for primary prevention method to prevent illness, decrease dental caries through fluoridation, and provide clean drinking water for decades. The City of Henderson, Nevada currently leads the nation on a new innovative ultraviolet (UV) technology that has been applied to the municipal water supply for advanced disinfection. UV disinfection is the process of using ultraviolet light to alter cellular molecular components essential to cell function and has been proven effective in eliminating harmful bacteria, viruses (specifically cryptosporidium and giardia), spores and mold to permanently purify water. The first UV disinfection system was developed in France and now there are over 2,000 UV disinfection systems to treat drinking water in Europe. The City of Henderson conducted a pilot study to test the UV technology in the United States. The City of Henderson Water Authority Facility is now being modeled and replicated nationwide in places like the Cedar Water Treatment Facility in Seattle, Washington.
DSD-INT 2017 A stroll through the European marine data landscape the role of ...Deltares
Presentation by Belén Martín Míguez (EMODnet) at the Symposium Earth Observation and Data Science, during Delft Software Days - Edition 2017. Friday, 3 November 2017, Delft.
Dr Chuanmin Hu Professor of Oceanography University of South Florida, USA : S...Région Guadeloupe
International conférence on sargassum
Thursday, October 24th, 2019
Day 1 - State of knowledge on Sargassum algae
Satellite remote sensing and estimation of the caribbean sea's sargassum surface area
----
Conférence Internationale sur les Sargasses
Jeudi 24 octobre - Journée 1
État des lieux sur la connaissance des algues sargasses
Table-ronde 2
Télédétection satellitaire, estimation de la surface en sargasses de la mer des Caraïbes, et retours d’expéditions
Grahame Niles Assessing the Feasibility of Impact-Based Forecasting For Seaso...Région Guadeloupe
International conférence on sargassum
Thursday, October 24th, 2019
Day 1 - State of knowledge on Sargassum algae
Satellite remote sensing and estimation of the caribbean sea's sargassum surface area
----
Conférence Internationale sur les Sargasses
Jeudi 24 octobre - Journée 1
État des lieux sur la connaissance des algues sargasses
Table-ronde 2
Télédétection satellitaire, estimation de la surface en sargasses de la mer des Caraïbes, et retours d’expéditions
Hazel A. Oxenford : Communicating Sargassum ForecastsRégion Guadeloupe
International conférence on sargassum
Thursday, October 24th, 2019
Day 1 - State of knowledge on Sargassum algae
Satellite remote sensing and estimation of the caribbean sea's sargassum surface area
----
Conférence Internationale sur les Sargasses
Jeudi 24 octobre - Journée 1
État des lieux sur la connaissance des algues sargasses
Table-ronde 2
Télédétection satellitaire, estimation de la surface en sargasses de la mer des Caraïbes, et retours d’expéditions
DSD-INT 2017 Global modelling of hydrology and water resources: current state...Deltares
Presentation by Marc BIerkens (Deltares) at the Symposium on catchment hydrology and WFlow, during Delft Software Days - Edition 2017. Tuesday, 24 October 2017, Delft.
corallivory and algal dynamics on some coral reefs in the persian gulfpersiangulf1
Macroalgae are a sign of degradation of coral reefs. Distribution of macroalgae on reefs is moderated by grazers including fish and sea urchins. However, several fish species including certain parrotfishes graze on live coral tissues, at times causing profound damage. In this paper, the positive role of macroalgae in suppressing parrotfish predation on Porites corals, the dominant coral genus in Qeshm Island, is investigated at three research sites at Qeshm Island in the Persian Gulf between April and July 2014 and 2015. Macroalgae, which were abundant in April, decreased significantly in frequency in July, while at the same time, the percentage of Porites colonies, the frequency of fish bite marks on Porites colonies, and the overall area of live coral tissue, which was grazed by parrotfishes increased dramatically, all of which were only negligible in April (with certain exceptions). Nevertheless, no changes were observed in parrotfish abundance. Despite partially supportive statistical data, this phenomenon is more likely to be due to the increased nutritional values of the corals in July in comparison to April. However, to understand the cause(s) and mechanisms involved in this annual phenomenon, more investigations seem necessary.
Response options: Biological Response Indicator Devices for Gauging Environm...OSU_Superfund
Kim A. Anderson, PhD
Professor, Environmental & Molecular Toxicology
Director, Food Safety & Environmental Stewardship Program
Oregon State University
Response, Recovery, and Resilience to Oil Spills and Environmental Disasters: Engaging Experts and Communities A Symposium and Workshop for Community Stakeholders, Researchers and Policy Makers January 29, 2013 Energy, Coast and Environment Building, Woods Auditorium, LSU Campus, Baton Rouge, LA 70803
More information on symposium: http://superfund.oregonstate.edu/LSUSymposium1.13#91
More info on research: http://superfund.oregonstate.edu/project4
Sasumua: linking a landscape and institutional mosaic to climate change in KenyaCIFOR-ICRAF
Presentation by Meine van Noordwijk & Thomas Yatich, ICRAF
Landscape approaches to mitigation and adaptation, Forest Day 3
Sunday, 13 December 2009
Copenhagen, Denmark
Dr Frédéric Ménard IRD - France : Basic knowledge on Sargassum and overview o...Région Guadeloupe
International conférence on sargassum
Thursday, October 24th, 2019
Day 1 - State of knowledge on Sargassum algae
State of knowledge - biological, ecological and oceanographic data
Fundamental knowledge about sargassum and related micro-organisms
----
Conférence Internationale sur les Sargasses
Jeudi 24 octobre - Journée 1
État des lieux sur la connaissance des algues sargasses
Table-ronde 1
Connaissance fondamentale des algues sargasses et des micro-organismes associés
The Ultra Violet Project in Henderson, Nevada: Reducing Public Health Infecti...John Whitehill, Jr., MPH
Community water treatment has been used for primary prevention method to prevent illness, decrease dental caries through fluoridation, and provide clean drinking water for decades. The City of Henderson, Nevada currently leads the nation on a new innovative ultraviolet (UV) technology that has been applied to the municipal water supply for advanced disinfection. UV disinfection is the process of using ultraviolet light to alter cellular molecular components essential to cell function and has been proven effective in eliminating harmful bacteria, viruses (specifically cryptosporidium and giardia), spores and mold to permanently purify water. The first UV disinfection system was developed in France and now there are over 2,000 UV disinfection systems to treat drinking water in Europe. The City of Henderson conducted a pilot study to test the UV technology in the United States. The City of Henderson Water Authority Facility is now being modeled and replicated nationwide in places like the Cedar Water Treatment Facility in Seattle, Washington.
DSD-INT 2017 A stroll through the European marine data landscape the role of ...Deltares
Presentation by Belén Martín Míguez (EMODnet) at the Symposium Earth Observation and Data Science, during Delft Software Days - Edition 2017. Friday, 3 November 2017, Delft.
Dr Chuanmin Hu Professor of Oceanography University of South Florida, USA : S...Région Guadeloupe
International conférence on sargassum
Thursday, October 24th, 2019
Day 1 - State of knowledge on Sargassum algae
Satellite remote sensing and estimation of the caribbean sea's sargassum surface area
----
Conférence Internationale sur les Sargasses
Jeudi 24 octobre - Journée 1
État des lieux sur la connaissance des algues sargasses
Table-ronde 2
Télédétection satellitaire, estimation de la surface en sargasses de la mer des Caraïbes, et retours d’expéditions
Grahame Niles Assessing the Feasibility of Impact-Based Forecasting For Seaso...Région Guadeloupe
International conférence on sargassum
Thursday, October 24th, 2019
Day 1 - State of knowledge on Sargassum algae
Satellite remote sensing and estimation of the caribbean sea's sargassum surface area
----
Conférence Internationale sur les Sargasses
Jeudi 24 octobre - Journée 1
État des lieux sur la connaissance des algues sargasses
Table-ronde 2
Télédétection satellitaire, estimation de la surface en sargasses de la mer des Caraïbes, et retours d’expéditions
Hazel A. Oxenford : Communicating Sargassum ForecastsRégion Guadeloupe
International conférence on sargassum
Thursday, October 24th, 2019
Day 1 - State of knowledge on Sargassum algae
Satellite remote sensing and estimation of the caribbean sea's sargassum surface area
----
Conférence Internationale sur les Sargasses
Jeudi 24 octobre - Journée 1
État des lieux sur la connaissance des algues sargasses
Table-ronde 2
Télédétection satellitaire, estimation de la surface en sargasses de la mer des Caraïbes, et retours d’expéditions
DSD-INT 2017 Global modelling of hydrology and water resources: current state...Deltares
Presentation by Marc BIerkens (Deltares) at the Symposium on catchment hydrology and WFlow, during Delft Software Days - Edition 2017. Tuesday, 24 October 2017, Delft.
corallivory and algal dynamics on some coral reefs in the persian gulfpersiangulf1
Macroalgae are a sign of degradation of coral reefs. Distribution of macroalgae on reefs is moderated by grazers including fish and sea urchins. However, several fish species including certain parrotfishes graze on live coral tissues, at times causing profound damage. In this paper, the positive role of macroalgae in suppressing parrotfish predation on Porites corals, the dominant coral genus in Qeshm Island, is investigated at three research sites at Qeshm Island in the Persian Gulf between April and July 2014 and 2015. Macroalgae, which were abundant in April, decreased significantly in frequency in July, while at the same time, the percentage of Porites colonies, the frequency of fish bite marks on Porites colonies, and the overall area of live coral tissue, which was grazed by parrotfishes increased dramatically, all of which were only negligible in April (with certain exceptions). Nevertheless, no changes were observed in parrotfish abundance. Despite partially supportive statistical data, this phenomenon is more likely to be due to the increased nutritional values of the corals in July in comparison to April. However, to understand the cause(s) and mechanisms involved in this annual phenomenon, more investigations seem necessary.
Response options: Biological Response Indicator Devices for Gauging Environm...OSU_Superfund
Kim A. Anderson, PhD
Professor, Environmental & Molecular Toxicology
Director, Food Safety & Environmental Stewardship Program
Oregon State University
Response, Recovery, and Resilience to Oil Spills and Environmental Disasters: Engaging Experts and Communities A Symposium and Workshop for Community Stakeholders, Researchers and Policy Makers January 29, 2013 Energy, Coast and Environment Building, Woods Auditorium, LSU Campus, Baton Rouge, LA 70803
More information on symposium: http://superfund.oregonstate.edu/LSUSymposium1.13#91
More info on research: http://superfund.oregonstate.edu/project4
Social Media Marketing is the essential part of any marketing campaign. Here we get the chance to reach more prospect and retaining the existing customers.
DSD-INT 2019 Fine sediments - transport in suspension, storage and supply - F...Deltares
Presentation by Prof. Dr. Mário J. Franca, IHE Delft & Delft University of Technology, The Netherlands, at the Delft3D - User Days (Day 3a: River morphodynamics), during Delft Software Days - Edition 2019. Wednesday, 13 November 2019, Delft.
Water-related bird assemblages in an urban pond ‘archipelago’: Winter pattern...Maria Paola Di Santo
This study reports on the patterns of species occurrence, abundance and richness of a wintering water-related bird assemblage in an ‘archipelago’ of 70 small artificial urban ponds (AUPs) embedded in a metropolitan landscape (Rome, central Italy). A total of 20 species in 26 AUPs were sampled. Only the largest AUPs (>0.1 ha) contained all these species, except for Gallinula chloropus. The highest total mean species abundance was observed in the largest ponds, with statistically significant differences evident among size classes. Two significant spatial thresholds in species abundance and richness were observed (between 0.01 and 0.1 ha; between 0.1 and 1 ha in size). The abundance of single species was correlated with their frequency of occurrence. Ponds in urban areas must be larger than 0.1 ha to host a rich winter assemblage of birds, with a further increase in richness noted with a surface area larger than 1 ha. The highest number of species was observed in the larger ponds (>1 ha). The species richness of each AUP is directly correlated to their size (log-transformed species–area relationship: log S = 3.515 + 0.497 log A; R2 = 0.76). Further research should be conducted to confirm these patterns and to implement information useful for planning and management of artificial ponds in urban areas for this purpose.
Status of seagrass ecosystem in Kauswagan, Lanao Del Norte and Laguindingan, ...Innspub Net
The study was conducted to determine the present status of seagrass resources of Laguindingan, Misamis Oriental and Kauswagan, Lanao del Norte and compared this through time with secondary data. It employed the transect-quadrat methods. Perpendicular to the shoreline, three (3) 100-m transect lines at 200-m interval between each transect were laid. Seven seagrass species were recorded comprising 38.6% of the total number (19) of seagrass species found in the Philippines. The seagrass community in all sites surveyed showed that it is highly dominated by Thalassia hemprichii species. However, there were no significant differences in species richness and diversity based on single-factor ANOVA statistical analysis (p>0.5). The abundance of T. hemprichii could probably be due to the prominent characteristic of this species where it could grow well in different types of habitat with various environmental conditions. The condition of seagrass beds in both areas were fair and the low Shannon-Wiener Diversity Index of seagrass in Kauswagan, Lanao del Norte (H’=0.76±0.22) and in Laguindingan, Misamis Oriental respectively (H’=0.40±0.35) indicate low stability in the community, which means that the condition of the seagrass ecosystem could be under threat, both from natural and anthropogenic activities. Over time, a fluctuating trend in species composition and a notable decline in seagrass species diversity and abundance have been observed in both areas. This present status calls an immediate response from the decision makers concerned for the sustainable management and conservation of the seagrass resources.
The Scientific journal “Norwegian Journal of development of the International Science” is issued 24 times a year and is a scientific publication on topical problems of science.
MAB-IHP Regional Symposium: Managing Water Resources in Biosphere Reserves in...UNESCO Venice Office
Antoni Mas, International Center for the Mediterranean Biosphere Reserves, Assessing the effects of Global Change on ecological water quality of Mediterranean river basins, Spain
Venice, 16-17 December 2021
Overall responsibility for the views and opinions expressed in the slides is taken by the authors
Benthic macrofaunal assemblage in seagrass-mangrove complex and adjacent ecos...AbdullaAlAsif1
Present study dealt with the on faunal and in faunal assemblage from seagrass bed, mangrove area, and adjacent non-mangrove and seagrass (NMS) in Punang-Sari estuary, Lawas, Sarawak, Malaysia. Samples were collected from June to July 2019 using quadrates and handpicking from the outside the sampling area to know the real checklist of surface macrofauna in this area. A ten-meter transect line was settled in three habitat areas where sampling was performed by putting three quadrates (0.35m×0.35m). Epifauna and infauna samples were collected from inside the quadrate and sieved using 0.4 mm mesh size sieve. A total of 111 species of gastropod (87 species from 30 families), bivalve (18 species from 9 families), Polychaeta (2 species), echinoderms (1 species), and crustacean (3 species) were recorded during the study period. Seagrass meadows comprised most diverse and abundant faunal (50 species) assemblage followed by mangrove habitats (48 species), and NMS (20 species). The dendrogram revealed two significant habitats in the sampling site. PCA analysis revealed, seagrass habitat sheltered a higher number of species followed by mangrove and NMS area. Jaccard similarity index revealed seagrass and mangrove habitats (0.42) contains the highest similar species amongst all habitats compared to mangrove and non-seagrass-mangrove area (0.26). Out of total species recorded (101), only ten species were reported as least concern, and 2 species hold deficient data status, and the rest are not evaluated. Bio-assemblage in seagrass habitat was found rich compared to other habitats, which could be useful for future ecological investigation and marine ranching.
What is greenhouse gasses and how many gasses are there to affect the Earth.moosaasad1975
What are greenhouse gasses how they affect the earth and its environment what is the future of the environment and earth how the weather and the climate effects.
Multi-source connectivity as the driver of solar wind variability in the heli...Sérgio Sacani
The ambient solar wind that flls the heliosphere originates from multiple
sources in the solar corona and is highly structured. It is often described
as high-speed, relatively homogeneous, plasma streams from coronal
holes and slow-speed, highly variable, streams whose source regions are
under debate. A key goal of ESA/NASA’s Solar Orbiter mission is to identify
solar wind sources and understand what drives the complexity seen in the
heliosphere. By combining magnetic feld modelling and spectroscopic
techniques with high-resolution observations and measurements, we show
that the solar wind variability detected in situ by Solar Orbiter in March
2022 is driven by spatio-temporal changes in the magnetic connectivity to
multiple sources in the solar atmosphere. The magnetic feld footpoints
connected to the spacecraft moved from the boundaries of a coronal hole
to one active region (12961) and then across to another region (12957). This
is refected in the in situ measurements, which show the transition from fast
to highly Alfvénic then to slow solar wind that is disrupted by the arrival of
a coronal mass ejection. Our results describe solar wind variability at 0.5 au
but are applicable to near-Earth observatories.
A brief information about the SCOP protein database used in bioinformatics.
The Structural Classification of Proteins (SCOP) database is a comprehensive and authoritative resource for the structural and evolutionary relationships of proteins. It provides a detailed and curated classification of protein structures, grouping them into families, superfamilies, and folds based on their structural and sequence similarities.
Introduction:
RNA interference (RNAi) or Post-Transcriptional Gene Silencing (PTGS) is an important biological process for modulating eukaryotic gene expression.
It is highly conserved process of posttranscriptional gene silencing by which double stranded RNA (dsRNA) causes sequence-specific degradation of mRNA sequences.
dsRNA-induced gene silencing (RNAi) is reported in a wide range of eukaryotes ranging from worms, insects, mammals and plants.
This process mediates resistance to both endogenous parasitic and exogenous pathogenic nucleic acids, and regulates the expression of protein-coding genes.
What are small ncRNAs?
micro RNA (miRNA)
short interfering RNA (siRNA)
Properties of small non-coding RNA:
Involved in silencing mRNA transcripts.
Called “small” because they are usually only about 21-24 nucleotides long.
Synthesized by first cutting up longer precursor sequences (like the 61nt one that Lee discovered).
Silence an mRNA by base pairing with some sequence on the mRNA.
Discovery of siRNA?
The first small RNA:
In 1993 Rosalind Lee (Victor Ambros lab) was studying a non- coding gene in C. elegans, lin-4, that was involved in silencing of another gene, lin-14, at the appropriate time in the
development of the worm C. elegans.
Two small transcripts of lin-4 (22nt and 61nt) were found to be complementary to a sequence in the 3' UTR of lin-14.
Because lin-4 encoded no protein, she deduced that it must be these transcripts that are causing the silencing by RNA-RNA interactions.
Types of RNAi ( non coding RNA)
MiRNA
Length (23-25 nt)
Trans acting
Binds with target MRNA in mismatch
Translation inhibition
Si RNA
Length 21 nt.
Cis acting
Bind with target Mrna in perfect complementary sequence
Piwi-RNA
Length ; 25 to 36 nt.
Expressed in Germ Cells
Regulates trnasposomes activity
MECHANISM OF RNAI:
First the double-stranded RNA teams up with a protein complex named Dicer, which cuts the long RNA into short pieces.
Then another protein complex called RISC (RNA-induced silencing complex) discards one of the two RNA strands.
The RISC-docked, single-stranded RNA then pairs with the homologous mRNA and destroys it.
THE RISC COMPLEX:
RISC is large(>500kD) RNA multi- protein Binding complex which triggers MRNA degradation in response to MRNA
Unwinding of double stranded Si RNA by ATP independent Helicase
Active component of RISC is Ago proteins( ENDONUCLEASE) which cleave target MRNA.
DICER: endonuclease (RNase Family III)
Argonaute: Central Component of the RNA-Induced Silencing Complex (RISC)
One strand of the dsRNA produced by Dicer is retained in the RISC complex in association with Argonaute
ARGONAUTE PROTEIN :
1.PAZ(PIWI/Argonaute/ Zwille)- Recognition of target MRNA
2.PIWI (p-element induced wimpy Testis)- breaks Phosphodiester bond of mRNA.)RNAse H activity.
MiRNA:
The Double-stranded RNAs are naturally produced in eukaryotic cells during development, and they have a key role in regulating gene expression .
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
3. Method to visualise the ecological state of
mediterranean mediolittoral ecosystems
through HOTSPOTS
o Where are the most degraded ecosystems ?
Method to present the spatial relationship
between a pressure source and its
surrounding ecosystems.
o How much and how far a pressure source
impacts its environment ?
4. Combination of “2d moving average”, CARLIT algorithm and
interpolation
continuous surface
Hotspots with low biodiversity, degraded ecosystems
5. 3 meters resolution
Map of the mediolittoral communities using CARLIT methodology
(Ballesteros et al. 2007)
Mediterranean French coast
6. CARLIT is calculated by selecting a segment of coast (WFD=Water
Body)
∑ (Length cover of a community x ecological value)
value at reference condition
Cystoseira amentacea var.
stricta
(Phaeophyceae, Fucales)
Trottoirs - Lithophyllum
byssoides
(Rhodophyceae, Corallinales)
Encrusting Coralines
Coralina elongata
Ulvales
Cyanobacterias
High Values
Low Values
= ratio [0;1]CARLIT ≈
7. Points every 50 meters along the
coast
For each point we calculate
CARLIT inside a 500m window
(Distance by the sea = across bays and around
capes )
CARLIT index is assigned to
the point
GIS programming
10. Easy to use for managers and decision makers
11. Create GIS database of pressure sources on the coast
Include characterics of the sources (size, number of boats…)
12. For each pressure source
A window increasing in size
select ecosystem data and
CARLIT index is calculated
3127 pressure sources
D-CARLIT
CARLIT
16. Google Earth
o Map of the mediolittoral
communities
o Hotspots
o Pressure sources +
characteristics
o D-CARLIT
http://med-impact.unice.fr
Creative Commons
Licence
