Presentation by Kebede Amenu, Coen van Wagenberg, Claudia Ganser, James Noah Ssemanda, Arie Havelaar, Kristine Roesel, Biruk Alemu Gemeda, Lina Mego, Donya Madjdian, Theo Knight-Jones at a stakeholder update workshop on Ethiopia food safety research projects, Addis Ababa, Ethiopia, 20 May 2021.
Aflatoxin M1-related health risk for milk consumers in dairy farms in rural a...ILRI
Poster by Filipe Maximiano Sousa, Apollinaire Nombre, Amos Miningou, SyAppolinaireTraore, Johanna Lindahl, Augustine Ayantunde, Javier Sanchez and Silvia Alonso presented at the virtual Agriculture, Nutrition and Health (ANH) Academy Week 2021, 29 June – 1 July 2021. Nairobi, Kenya: ILRI.
2.15_David Verner-Jeffreys_The UK FAO AMR Reference Centre, our work in Bangl...WorldFish
Presentation by David Verner-Jeffreys on 'The UK FAO AMR Reference Centre, our work in Bangladesh' at the One Health Approach workshop on Tuesday, 23 March 2021.
Presentation by Kebede Amenu, Coen van Wagenberg, Claudia Ganser, James Noah Ssemanda, Arie Havelaar, Kristine Roesel, Biruk Alemu Gemeda, Lina Mego, Donya Madjdian, Theo Knight-Jones at a stakeholder update workshop on Ethiopia food safety research projects, Addis Ababa, Ethiopia, 20 May 2021.
Aflatoxin M1-related health risk for milk consumers in dairy farms in rural a...ILRI
Poster by Filipe Maximiano Sousa, Apollinaire Nombre, Amos Miningou, SyAppolinaireTraore, Johanna Lindahl, Augustine Ayantunde, Javier Sanchez and Silvia Alonso presented at the virtual Agriculture, Nutrition and Health (ANH) Academy Week 2021, 29 June – 1 July 2021. Nairobi, Kenya: ILRI.
2.15_David Verner-Jeffreys_The UK FAO AMR Reference Centre, our work in Bangl...WorldFish
Presentation by David Verner-Jeffreys on 'The UK FAO AMR Reference Centre, our work in Bangladesh' at the One Health Approach workshop on Tuesday, 23 March 2021.
Measuring and evaluating resilience in drylands of East Africa: Managing impa...ILRI
Presented by Bernard Bett at the IFPRI 2020 Policy Consultation and Conference, Side Event on Measuring and Evaluating Resilience in Drylands of East Africa, Addis Ababa, 15-17 May 2014
The critical crossroads of animal, human, and environmental health: Scaling u...ILRI
Presented by Mark Mitchell, Kristina Roesel, Bernard Bett, Lasha Avaliani, Bedasa Eba and Christine Jost at a Livestock and Livelihoods Webinar series, 21 September 2021
Boosting Uganda’s Investments in Livestock Development (2019-2023): Introduci...ILRI
Presented by Jolly Hoona (MAAIF), Annie Cook (ILRI), Anne Mayer-Scholl (BfR), Constanze Böning (VSF-G), Tinega Ong’ondi (VSF-G), Kristina Roesel (ILRI/FUB) and James Bugeza (NaLIRRI) at the #BuildUganda Stakeholder Meeting, Kampala, Uganda, 7 June 2019
Strengths of the CGIAR Antimicrobial Resistance HubILRI
Presentation by Arshnee Moodley at the International Vaccine Institute Africa Regional Antimicrobial Resistance Data Sharing and Analysis Virtual Workshop, 29 June 2021
Presentation by Barbara Szonyi and Aklilu Feleke at the ICARDA-ILRI Livestock and Fish external evaluation meeting of sheep and goat value chains in Ethiopia, Addis Ababa, Ethiopia, 4 June 2015.
Ms. Aline DeLucia - 2018 Farm Bill Animal Health Components and ProcessJohn Blue
2018 Farm Bill Animal Health Components and Process - Ms. Aline DeLucia, Associate Director, Public Policy, National Association of State Departments of Agriculture (NASDA), from the 2018 NIAA Annual Conference, Livestock Traceability: Opportunities for Animal Agriculture, plus the Traceability and the Real World Interactive Workshop, April 10 - 12, Denver, CO, USA.
More presentations at https://www.youtube.com/channel/UCeUDeS810OcOfuEYwj1oHKQ
The CGIAR Research Program on Agriculture for Nutrition and Health (A4NH) is hosting a brownbag discussion series on our program to participants from our lead center, IFPRI.
The series will cover topics about our research portfolio, how we engage with partners, and areas for scaling up research.
This presentation introduces the basics of A4NH and answers our most commonly-asked-questions.
The CGIAR Research Program on Agriculture for Nutrition and Health (A4NH) is hosting a brownbag discussion series on our program to participants from our lead center, IFPRI.
The series will cover commonly-asked-questions about our research portfolio, how we engage with partners, and areas for scaling up research.
This presentation outlines collaborations between A4NH and the Markets, Trade, and Institutions Division at IFPRI.
9 February 2017, the first Food for All Talk (#FFATalks) under the WBG-Netherlands Partnership took place on the subject: Food Systems for Healthier Diets.
Assessing smallholder pig value chains in Uganda: Tools used at the farmers’ ...ILRI
Poster by Emily A. Ouma, Danilo Pezo, Michel Dione, Kristina Rösel, Lawrence Mayega, David Kiryabwire, Gideon Nadiope and Peter Lule presented for the Agrifood chain toolkit conference on livestock and fish value chains in East Africa, Kampala, Uganda, 9-11 September 2013.
The use of Innovation Platforms to increase vaccination coverage against ende...ILRI
Poster prepared by M.M. Dione, I. Traore, H. Kassambara, C. O. Toure, A. Sow, B. Wieland and A. Fall for the 15th International Symposium of Veterinary Epidemiology and Economics, Chiang Mai, Thailand, 12-16 November 2018
Zoonoses and food safety related activities in APHCA member statesILRI
Presented by Jeff Gilbert at the joint Animal Production and Health Commission for Asia and the Pacific (APHCA) - World Organization for Animal Health (OIE) regional workshop on zoonoses, food-borne diseases and antimicrobial resistance, Thimphu, Bhutan, 24-25 September 2013.
Food safety along informal pork market chains in Vietnam: Experience from an ...ILRI
Presented by Fred Unger, Hung Nguyen-Viet, Lucy Lapar, Karen Marshall and Delia Grace at the Neglected Tropical Diseases (NTD) Asia 2016 conference, Khon Kaen, Thailand, 14–15 January 2016.
Measuring and evaluating resilience in drylands of East Africa: Managing impa...ILRI
Presented by Bernard Bett at the IFPRI 2020 Policy Consultation and Conference, Side Event on Measuring and Evaluating Resilience in Drylands of East Africa, Addis Ababa, 15-17 May 2014
The critical crossroads of animal, human, and environmental health: Scaling u...ILRI
Presented by Mark Mitchell, Kristina Roesel, Bernard Bett, Lasha Avaliani, Bedasa Eba and Christine Jost at a Livestock and Livelihoods Webinar series, 21 September 2021
Boosting Uganda’s Investments in Livestock Development (2019-2023): Introduci...ILRI
Presented by Jolly Hoona (MAAIF), Annie Cook (ILRI), Anne Mayer-Scholl (BfR), Constanze Böning (VSF-G), Tinega Ong’ondi (VSF-G), Kristina Roesel (ILRI/FUB) and James Bugeza (NaLIRRI) at the #BuildUganda Stakeholder Meeting, Kampala, Uganda, 7 June 2019
Strengths of the CGIAR Antimicrobial Resistance HubILRI
Presentation by Arshnee Moodley at the International Vaccine Institute Africa Regional Antimicrobial Resistance Data Sharing and Analysis Virtual Workshop, 29 June 2021
Presentation by Barbara Szonyi and Aklilu Feleke at the ICARDA-ILRI Livestock and Fish external evaluation meeting of sheep and goat value chains in Ethiopia, Addis Ababa, Ethiopia, 4 June 2015.
Ms. Aline DeLucia - 2018 Farm Bill Animal Health Components and ProcessJohn Blue
2018 Farm Bill Animal Health Components and Process - Ms. Aline DeLucia, Associate Director, Public Policy, National Association of State Departments of Agriculture (NASDA), from the 2018 NIAA Annual Conference, Livestock Traceability: Opportunities for Animal Agriculture, plus the Traceability and the Real World Interactive Workshop, April 10 - 12, Denver, CO, USA.
More presentations at https://www.youtube.com/channel/UCeUDeS810OcOfuEYwj1oHKQ
The CGIAR Research Program on Agriculture for Nutrition and Health (A4NH) is hosting a brownbag discussion series on our program to participants from our lead center, IFPRI.
The series will cover topics about our research portfolio, how we engage with partners, and areas for scaling up research.
This presentation introduces the basics of A4NH and answers our most commonly-asked-questions.
The CGIAR Research Program on Agriculture for Nutrition and Health (A4NH) is hosting a brownbag discussion series on our program to participants from our lead center, IFPRI.
The series will cover commonly-asked-questions about our research portfolio, how we engage with partners, and areas for scaling up research.
This presentation outlines collaborations between A4NH and the Markets, Trade, and Institutions Division at IFPRI.
9 February 2017, the first Food for All Talk (#FFATalks) under the WBG-Netherlands Partnership took place on the subject: Food Systems for Healthier Diets.
Assessing smallholder pig value chains in Uganda: Tools used at the farmers’ ...ILRI
Poster by Emily A. Ouma, Danilo Pezo, Michel Dione, Kristina Rösel, Lawrence Mayega, David Kiryabwire, Gideon Nadiope and Peter Lule presented for the Agrifood chain toolkit conference on livestock and fish value chains in East Africa, Kampala, Uganda, 9-11 September 2013.
The use of Innovation Platforms to increase vaccination coverage against ende...ILRI
Poster prepared by M.M. Dione, I. Traore, H. Kassambara, C. O. Toure, A. Sow, B. Wieland and A. Fall for the 15th International Symposium of Veterinary Epidemiology and Economics, Chiang Mai, Thailand, 12-16 November 2018
Zoonoses and food safety related activities in APHCA member statesILRI
Presented by Jeff Gilbert at the joint Animal Production and Health Commission for Asia and the Pacific (APHCA) - World Organization for Animal Health (OIE) regional workshop on zoonoses, food-borne diseases and antimicrobial resistance, Thimphu, Bhutan, 24-25 September 2013.
Food safety along informal pork market chains in Vietnam: Experience from an ...ILRI
Presented by Fred Unger, Hung Nguyen-Viet, Lucy Lapar, Karen Marshall and Delia Grace at the Neglected Tropical Diseases (NTD) Asia 2016 conference, Khon Kaen, Thailand, 14–15 January 2016.
Presented by George Msalya, Sokoine University of Agriculture, at the Safe Food, Fair Food Annual Project Planning Meeting, Addis Ababa, Ethiopia, 15-17 April 2014
Food safety performance in animal-source food value chainsILRI
Presentation by Fred Unger, Hung Nguyen-Viet, Phuc Pham-Duc, Pham Van Hung, Huyen Le Thi Thanh, Sinh Dang-Xuan, Nguyen Thanh Luong, Hai Ngo Hoang Tuan and Delia Grace at the 1st International Conference on Veterinary and Animal Science - the role of veterinary science to cope with pandemics, Universitas Nusa Cendana, Kupang, Indonesia, 20 October 2020.
More pork and less parasites: A farm to fork approach for assessment and mana...ILRI
Presentation by Kristina Roesel, Peter-Henning Clausen, Reinhard Fries, Maximilian Baumann, Karsten Noeckler and Delia Grace at a parasitological colloquium held at Free University Berlin, Germany, 18 October 2013.
Market based approaches to improving the safety of pork in Vietnam—SafePORKILRI
Poster by F. Unger, Hung Nguyen-Viet, P.V. Hung, P.D. Phuc, T.L.T. Huyen, R. Alders, J. Toribio and D. Grace presented at the CGIAR Research Program on Agriculture for Nutrition and Health (A4NH) Vietnam partner day on sharing progress and planning ahead for collaborative research, Hanoi, Vietnam, 23 March 2018.
African swine fever prevention and control research in Uganda (2011-2018)ILRI
Presented by Michel Dione, Emily Ouma, Peter Lule, Ben Lukuyu, Lawrence Mayega and Barbara Wieland at the SVA-NADDEC (Swedish National Veterinary Institute-National Animal Diseases, Diagnostic and Epidemiology Centre) African swine fever OIE Twinning Workshop, Kampala, 26-27 November 2018
One Health and food safety research in developing countriesILRI
Presentation by Hung Nguyen-Viet, Sinh Dang-Xuan and Rortana Chea at a seminar on 'Food Safety and Antimicrobial Resistance: One Health Perspectives', Battambang, Cambodia, 12 August 2019.
Nexus between One Health, nutrition and food safetyILRI
Presentation by Hung Nguyen-Viet, Fred Unger, Dang Xuan Sinh, Paula Dominguez-Salas and Delia Grace at the Asia-Pacific regional symposium on sustainable food systems for healthy diets and improved nutrition, Bangkok, Thailand, 10–11 November 2017.
"Empowering Women as Key drivers of Food System Change Lindiwe Majele Sibanda...ExternalEvents
"www.fao.org/about/meetings/sustainable-food-systems-nutrition-symposium
The International Symposium on Sustainable Food Systems for Healthy Diets and Improved Nutrition was jointly held by FAO and WHO in December 2016 to explore policies and programme options for shaping the food systems in ways that deliver foods for a healthy diet, focusing on concrete country experiences and challenges. This Symposium waas the first large-scale contribution under the UN Decade of Action for Nutrition 2016-2025. This presentation was part of Parallel session 3.3: Empowering women as key drivers of food system change"
Small ruminant keepers’ knowledge, attitudes and practices towards peste des ...ILRI
Presentation by Guy Ilboudo, Abel Sènabgè Biguezoton, Cheick Abou Kounta Sidibé, Modou Moustapha Lo, Zoë Campbell and Michel Dione at the 6th Peste des Petits Ruminants Global Research and Expertise Networks (PPR-GREN) annual meeting, Bengaluru, India, 28–30 November 2023.
Small ruminant keepers’ knowledge, attitudes and practices towards peste des ...ILRI
Poster by Guy Ilboudo, Abel Sènabgè Biguezoton, Cheick Abou Kounta Sidibé, Modou Moustapha Lo, Zoë Campbell and Michel Dione presented at the 6th Peste des Petits Ruminants Global Research and Expertise Networks (PPR-GREN) annual meeting, Bengaluru, India, 29 November 2023.
A training, certification and marketing scheme for informal dairy vendors in ...ILRI
Presentation by Silvia Alonso, Jef L. Leroy, Emmanuel Muunda, Moira Donahue Angel, Emily Kilonzi, Giordano Palloni, Gideon Kiarie, Paula Dominguez-Salas and Delia Grace at the Micronutrient Forum 6th Global Conference, The Hague, Netherlands, 16 October 2023.
Milk safety and child nutrition impacts of the MoreMilk training, certificati...ILRI
Poster by Silvia Alonso, Emmanuel Muunda, Moira Donahue Angel, Emily Kilonzi, Giordano Palloni, Gideon Kiarie, Paula Dominguez-Salas, Delia Grace and Jef L. Leroy presented at the Micronutrient Forum 6th Global Conference, The Hague, Netherlands, 16 October 2023.
Food safety research in low- and middle-income countriesILRI
Presentation by Hung Nguyen-Viet at the first technical meeting to launch the Food Safety Working Group under the One Health Partnership framework, Hanoi, Vietnam, 28 September 2023
Presentation by Hung Nguyen-Viet at the first technical meeting to launch the Food Safety Working Group under the One Health Partnership framework, Hanoi, Vietnam, 28 September 2023
Reservoirs of pathogenic Leptospira species in UgandaILRI
Presentation by Lordrick Alinaitwe, Martin Wainaina, Salome Dürr, Clovice Kankya, Velma Kivali, James Bugeza, Martin Richter, Kristina Roesel, Annie Cook and Anne Mayer-Scholl at the University of Bern Graduate School for Cellular and Biomedical Sciences Symposium, Bern, Switzerland, 29 June 2023.
Assessing meat microbiological safety and associated handling practices in bu...ILRI
Presentation by Patricia Koech, Winnie Ogutu, Linnet Ochieng, Delia Grace, George Gitao, Lily Bebora, Max Korir, Florence Mutua and Arshnee Moodley at the 8th All Africa Conference on Animal Agriculture, Gaborone, Botswana, 26–29 September 2023.
Ecological factors associated with abundance and distribution of mosquito vec...ILRI
Poster by Max Korir, Joel Lutomiah and Bernard Bett presented the 8th All Africa Conference on Animal Agriculture, Gaborone, Botswana, 26–29 September 2023.
Practices and drivers of antibiotic use in Kenyan smallholder dairy farmsILRI
Poster by Lydiah Kisoo, Dishon M. Muloi, Walter Oguta, Daisy Ronoh, Lynn Kirwa, James Akoko, Eric Fèvre, Arshnee Moodley and Lillian Wambua presented at Tropentag 2023, Berlin, Germany, 20–22 September 2023.
Professional air quality monitoring systems provide immediate, on-site data for analysis, compliance, and decision-making.
Monitor common gases, weather parameters, particulates.
Cancer cell metabolism: special Reference to Lactate PathwayAADYARAJPANDEY1
Normal Cell Metabolism:
Cellular respiration describes the series of steps that cells use to break down sugar and other chemicals to get the energy we need to function.
Energy is stored in the bonds of glucose and when glucose is broken down, much of that energy is released.
Cell utilize energy in the form of ATP.
The first step of respiration is called glycolysis. In a series of steps, glycolysis breaks glucose into two smaller molecules - a chemical called pyruvate. A small amount of ATP is formed during this process.
Most healthy cells continue the breakdown in a second process, called the Kreb's cycle. The Kreb's cycle allows cells to “burn” the pyruvates made in glycolysis to get more ATP.
The last step in the breakdown of glucose is called oxidative phosphorylation (Ox-Phos).
It takes place in specialized cell structures called mitochondria. This process produces a large amount of ATP. Importantly, cells need oxygen to complete oxidative phosphorylation.
If a cell completes only glycolysis, only 2 molecules of ATP are made per glucose. However, if the cell completes the entire respiration process (glycolysis - Kreb's - oxidative phosphorylation), about 36 molecules of ATP are created, giving it much more energy to use.
IN CANCER CELL:
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
introduction to WARBERG PHENOMENA:
WARBURG EFFECT Usually, cancer cells are highly glycolytic (glucose addiction) and take up more glucose than do normal cells from outside.
Otto Heinrich Warburg (; 8 October 1883 – 1 August 1970) In 1931 was awarded the Nobel Prize in Physiology for his "discovery of the nature and mode of action of the respiratory enzyme.
WARNBURG EFFECT : cancer cells under aerobic (well-oxygenated) conditions to metabolize glucose to lactate (aerobic glycolysis) is known as the Warburg effect. Warburg made the observation that tumor slices consume glucose and secrete lactate at a higher rate than normal tissues.
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 .
Seminar of U.V. Spectroscopy by SAMIR PANDASAMIR PANDA
Spectroscopy is a branch of science dealing the study of interaction of electromagnetic radiation with matter.
Ultraviolet-visible spectroscopy refers to absorption spectroscopy or reflect spectroscopy in the UV-VIS spectral region.
Ultraviolet-visible spectroscopy is an analytical method that can measure the amount of light received by the analyte.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
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.
insect taxonomy importance systematics and classification
Food Safety and Zoonoses team activities in Tanzania
1. Silvia Alonso, DVM MSc PhD Dipl ECVPH
Post-doctoral scientist, Food Safety and Zoonoses team, ILRI
MoreMilkiT project review and planning meeting
Tanga, Tanzania
17-19 March 2014
Food Safety and Zoonoses team activities in Tanzania
2. FOOD SAFETY AND ZOONOSES TEAM (ILRI)
Research interest in:
• Infectious diseases shared between animals and
humans (zoonoses) – incl. factors for (re)emergence
• Infectious diseases related to food safety (foodborne
zoonoses)
• Relation between access to safe and quality food and
nutritional outcomes
• Interventions along the food chain that help to
address the above
…in animal sourced foods
3. Two main projects in Tanzania
- “Risk based approaches to improving
food safety and market access in smallholder meat, milk and fish value chains in four African
countries”
• 2008-2011 (Phase 1)
• 2012-2015 (Phase 2)
- “What is killing
my cow? Re-assessing diseases in smallholder dairying in Tanzania”
• 2013-2014
4. SAFE FOOD, FAIR FOOD (SFFF)
Project target:
• Food safety (FS) risks
in 2 VCs in 4 countries
Morogoro Region
Mvomero District
Kilosa District
Tanga Region
Handeni District
Lushoto
Sheep & goats – Ethiopia and Senegal
Pork – Uganda
Dairy - Tanzania
5. SAFE FOOD, FAIR FOOD (SFFF)
Project objectives (TZ) and methods:
• Assessment of FS risks along the dairy value chain
• Identifying risk mitigating interventions (“best-bets”)
• Pilot “best-bets” (Randomized control trials)
Rapid Integrated Assessment (RIA) for food safety and nutrition (DRAFT REPORT)
Microbiological assessments of milk along the VC (farm to retailer)
Brucella & E. coli O157 (2013) – (2 MSc thesis / 1 draft publication)
Salmonella, Listeria, enterobacteriaceae, Staphylococcus (2014)
Systematic literature review of zoonotic hazards in dairy VC in TZ (DRAFT REPORT)
Identification (based on assessments above)
Prioritization (objective and/or convenient…)
6. SAFE FOOD, FAIR FOOD (SFFF)
Rapid
Integrated
Assessment
of FS and
nutrition
Microbiological
assessments
Systematic
literature
Review of
zoonotic
hazards
Prioritization of most
promising interventions
BEST-BETS
Pilot
best-bets
Public health implications?
What factors (e.g. farm management) are
related?
7. What is killing my cow – COW KILLER
Project target:
affecting dairy farmers
• Smallholder dairy farmers
• Pastoralists
(Same areas as SFFF)
8. What is killing my cow – COW KILLER
Project objectives (What we want to achieve):
• Identify most common pathogens affecting dairy
cattle herd
• Identify pathogens rarely looked for
• Identify farm management practices associated
with these diseases
• Identify interventions to address animal health
issues
• Field test a Disease Diagnosis Support Tool for
farmer and extension officers
9. What is killing my cow – COW KILLER
Project methods (What we have done):
• Sampled SICK dairy cattle – whole blood and serum
(n>400 animals)
Laboratory test (e.g.):
Rift Valley fever, Brucella, tick-borne diseases, CBPP
Q fever, parainfluenza virus, respiratory diseases
Geo-spatial distribution of animal health pathogens
• Questionnaire to farmers (n=150) - management
practices
Risk factor analysis (when possible)
Identification of farm activities that may link to disease
presence at the farm
10. What is killing my cow – COW KILLER
Blood
Farmer’s
questionnaire
Laboratory
testing
Data analysis
Pathogen
distribution
Mitigation
strategies
11. ACHIEVEMENTS END 2014
What should we have achieved by end 2014?
• Overview of Food safety in DAIRY VALUE CHAIN in target areas
(what are the problems, where, why, and what to do about them)
• Overview of animal health situation in DAIRY VALUE CHAIN in target areas
(what are the problems, where, why, and what to do about them)
In addition:
• IMPACT ASSESSMENT OF TRAINING AND CERTIFICATION of dairy VC actors
IN KENYA (to be conducted throughout 2014)
LESSONS LEARNT from training and certification in dairy value chain IN
INDIA (Ram Pratim Deka)
12. INTEGRATING ACTIVITIES
How can our outcomes contribute to other projects
in the DAIRY VC in Tanzania?
• Share of info on food safety risks and animal
health in the VC and propose interventions for
risk management
• Integrate food safety/milk quality into HUBs
systems
• Use HUBs as platform for best-bets testing?
• …..
14. This work is financed by
CGIAR Program on Agriculture for Nutrition and Health
Federal Ministry for Economic Cooperation and Development, Germany
(BMZ/GIZ)
Irish Aid
It is implemented in a partnership with
Sokoine University of Agriculture (SUA)
Federal Institute for Risk Assessment (BfR) Germany
It contributes to the CGIAR Research Programs on
• Livestock and Fish
• Agriculture for Nutrition and Health
Acknowledgements
15. The presentation has a Creative Commons licence. You are free to re-use or distribute this work, provided credit is given to ILRI.
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