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Information Jeunesse Arabe

L’UNESCO et l’ISESCO ont choisi de s’associer, pour créer, dans le cadre du programme INFOJEUNESSE, un portail Internet en langue arabe. La vocation de ce portail est de proposer aux jeunes, aux associations de jeunesse, et aux diverses institutions concernées un large éventail de ressources utiles et pertinentes, actuellement disponibles en arabe. Une attention particulière a été accordée aux documents publiés par les agences du Système des Nations Unies.

http://www.jeunessearabe.info/

CALL FOR APPLICATIONS BioVision.Nxt 2007

Following the success of the first World Life Sciences Forum BioVision in 1999, it was decided to further integrate the concerns and expectations of the younger generation of PhDs, Postdocs and MBAs. Consequently, the BioVision.Nxt initiative was launched with the support of the European Commission to further the careers of the most promising talents in Life Sciences worldwide.

As one of the three pillars upon which The World Life Sciences Forum is constructed, BioVision.Nxt will gather together 100 top flight PhDs, Postdocs and MBAs from leading universities and research institutions around the world.

Applicants

The criteria on which the selection of the “Class of 2007” will be based is as follows:

1. Be a graduate student or postdoc in 2007. If not a postdoc, the candidate should have obtained her/his Ph.D. degree not prior to April 2001.

2. Be engaged in research or other activities related to the life sciences, preferably in the field of healthcare, agriculture-nutrition or the environment.

3. Have excellent communication and organisational skills, and indicate the leadership positions held in organisations or companies, including the year(s) to date.

4. If active in research, provide a list of publications, including those in peer-reviewed journals. First author publications will be given more weight.

5. Indicate the awards, prizes and other distinctions obtained to date.

6. Describe the entrepreneurial activity that she/he may be engaged in.

7. Be a permanent resident or citizen in the place where she/he works or, if training abroad, be committed to returning to her/his home country. Foreign students or postdocs working with temporary visas will not be eligible to represent the country in which they are working or studying, but will be eligible to represent their home country if they are committed to returning when training is completed.

8. Agrees to submit her/his perspective relative to BioVision and the BioVision.Nxt programme within sixty (60) days. This feedback will be structured based on a template which will be provided on arrival.

9. Agrees, to the best of her/his ability, to “Reach Out to Help Out” at the nearest secondary school to serve as role model for school children who are turning away from science and math. Guidance in achieving this objective will be provided.

10. Agrees to indicate new potential BioVision.Nxt Fellows for the 2009 programme.

Candidates with the following qualifications will be encouraged:

1. Competitive fellowships granted from a prestigious institutions;
2. Interest in a multidisciplinary approach to the life sciences;
3. Capacity to network and disseminate information.

The World Life Sciences Forum BioVision will support all direct costs with regard to accommodation and participation of the “Class of 2007” Fellows in all BioVision-related events. The BioVision.Nxt Fellow will cover the cost of her/his travel expenses.

ESOF updates?

Hello to everyone!

I hope that the summer has treated you all well. I did not have the opportunity to go to ESOF 2006, but was wondering if anyone would be able to summarize the meeting and its key points.

regards!

Meredith

Adresse mail

Bonjour à tous!!
J'aimerais savoir si les adresses des chercheurs dont nous avons visiter les laboratoires, sont bien valides car j'ai essayer de contacter JM Raimond et le mail m'a été renvoyer.. Oo*
Bisous et à bientot!
Juliette

Welcome !

un petit coucou !

Coucou tout le monde (à 4h du mat presque 5h ^-^')!

(J'ai enfin retrouvé le site de ways ^^'). Je tenais à remercier toutes les personnes qui nous ont permis de passer une semaine formidable et inoubliable. La Science Ac' et les rencontres que j'ai pu faire pendant cette semaine m'ont bcp appris... Avant que je n'oublie ! Je suis en train de mettre mes photos et celles d'autres membres sur mon espace "yahoo photos". Je mettrais le lien sur le forum. J'espère qu'on pourra se revoir tous bientôt ^^. Maintenant que j'ai l'adresse du site je compte bien poster plus ^^. J'ai déjà loupé la visite avec fisher :(. J'y pense ! N'oubliez pas de parler à vos parents ou responsables légaux des rencontres CNRS Jeunes qui se dérouleront en octobre à Poitiers. Si vous avez besoin de plus d'infos ou bien que vous ayez (malencontreusement) égaré votre inscription contactez moi.
En ce qui concerne l'inscription et le règlement (si c'est un chèque, je vais demander à M.Gaudel s'il faut qu'il soit à l'ordre de la mjc ou bien du CNRS), envoyez-les à l'adresse suivante :

MJC Daniel André
126 rue Saint-Stenay
93700 DRANCY

Le prix sera alors de 50€ au lieu de 60€ et j'ai oublié ce que je devais vous dire -__-". Bref, ça serait vraiment sympa si on passait trois jours tous réunis à poitiers pour l'occasion.

Je vous invite à aller visiter le site de la mjc. Vous y trouverez de nombreuses photos des évènements passés (congrès MATh .en. JEANS, rencontres scientifiques,...) et des infos sur ceux à venir. (Je ferais un album avec mes photos du congrès sur yahoo photos que vous pourrez aller voir) :
http://www.mjc-andre.org/

J'ai tellement de choses à dire ! Mais je m'arrête là pour aujourd'hui où bien vous vous endormirez avant d'avoir lu la totalité du message ^^'.

PS : Je suis partante pour la sortie à l'observatoire (même si j'avais imaginé que l'on serait allongés dans un champs à observer les étoiles (^-^))

:[ Baisers vampiriques :[

Navich

Carpe Noctem

sujets de concours

Je ne me souviens plus trop qui m'a demandé des exemples de sujets de concours, mais vous les trouverez à partir du site des concours http://scei-concours.org/cadre_partenaire.htm
Une fois sur cette page, vous cliquez sur le site de l'école (ou du groupe d'écoles) qui vous intéresse, et vous trouverez en général un lien "sujets" ou "sujets et rapports" qui vous mènera tout droit aux sujets des quelques dernières années.

Bises !!

Amandine

Bon, on se revoit quand ???

Coucou à tous !

Le mois d'août est très bien pour les vacances (d'ailleurs j'en profite à fond, d'où ma disparition du blog ces derniers temps ...), mais il a l'inconvénient de nous tenir éloignés !
Du coup, autant commencer à s'organiser pour la rentrée. Au vu de nos différents emplois du temps, on pourrait se retrouver le samedi 23 septembre pour la journée. Ce n'est encore qu'une proposition, mais dites-moi si vous avez un empêchement pour qu'on étudie sérieusement la question. Au programme, on pourrait faire une visite de l'Observatoire de Paris (à Port-Royal) si c'est possible à cette date et éventuellement demander à Mr Korn, l'Académicien qui était venu le lundi, de nous faire une petite présentation sur ses recherches (c'est de la neurobiologie, il veut nous montrer plein de choses sur le cerveau). Dites-moi si vous avez d'autres suggestions, en sachant que cette journée sera aussi l'occasion de parler d'avenir, notamment avec des chercheurs qui seraient intéressés par les tutorats/parrainages.

Par ailleurs, Livio a des contacts avec la présidente de l'association PariScience qui organise un festival international du film scientifique du 12 au 14 octobre. Vous y êtes cordialement invités, et j'essaie de vous mettre le programme en attaché (ce n'est pas gagné ...).
Je crois que j'ai fait le tour pour le moment, donc je vous fais plein de bises, et à très bientôt !!!

Amandine

oxy

Nouveaux contacts hongrois

Bonsoir à tous,
A priori le premier contact franco-hongrois lors de la semaine de la Science Ac avait bien marché, non?
Du coup, on va essayer de maintenir et renforcer les liens entre les mouvements de jeunes scientifiques des deux pays, vous êtes partants pour continuer?
Là, quelques nouveaux jeunes hongrois (cette fois-ci des jeunes filles aussi) du mouvement Kutato Diàk qui s'intéressent à la culture francophone vont nous rejoindre sur Ways... Certains l'ont d'ailleurs déjà fait au moment où j'écris!
Donc ne vous étonnez pas de voir des nouveaux noms apparaître!

Et puis, à vous de jouer pour les connaître et créer des échanges avec eux!

Bisous et bonne nuit

Kinga

Mon premier essai avec Ways

Tout d'abord merci pour la petite explication sur le fonctionnement de Ways qui à l'air d'être un outil assez efficace.

Et puis ensuite je voudrais remercier publiquement pour que tout ceux qui voient ce message le sache.
Les personnes qui ont fait la Science Ac' sont des personnes exceptionnelles, d'un altruisme à tout épreuve (sauf en présence de Nutella là c'est chacun pour sa crêpe oui le vrai proverbe c'est pour sa peau mais essayer de manger de la peau même avec du Nutella c'est pas terrible). Même si vous êtes Parisien les animatrices n'hésiteront pas une seconde à vous ramener chez vous si vous avez peur dans les rues la nuit (Encore merci Amandine...).

Enfin je voudrais dire à tout ceux qui participeront aux prochaines Science academie: Vous faites quelque chose de super je vous souhaite d'être aussi heureux que je l'ai été avec ces animateurs, l'Ens, les chercheurs et le plus important vos camarades qui avec un peu de chance deviendront des amis formidables.

Amicalement Votre

Rémy Léone

Ps Encore une fois je le dis à tout les Academiciens si vous avez des problèmes en 1ère S voire en Terminale S n'hésitez pas à m'appeller pour me demander un coup de main...

2e journées des étoiles!!!

Bonjour à tous
Je préviens très tard, mais je viens de voir que ce week-end (les 5 et 6 aôut) ont lieu les 2e journées des étoiles dans le Parc Naturel du Vexin.
Comme plusieurs d'entre vous voulaient faire une sortie observation des étoiles, cela peut vous intéresser!
Pour plus d'informations:
http://www.parc-naturel-vexin.fr/ress.php?id_ev1=1057&id_r=2

Au programme activités et conférences en journée et observation le soir (si le ciel le permet).

J'irai peut-être si un train veut bien m'y emmener...

Bon week-end
Kinga

Tags:

Biological control of locusts

New weapons for old enemies

FAO NEWS ROOM ONLINE
31 July 2006

During the 1988 desert locust plague, swarms crossed the Atlantic from Mauritania to the Caribbean, flying 5 000 kilometres in 10 days.

Scientists were stumped because migrating swarms normally come down to rest every night. But locusts can’t swim, so how could it be?

It turned out that the swarms were coming down at sea – on any ships they could find, but also in the water itself. The first ones in all drowned but their corpses made rafts for the other ones to rest on.

Since the dawn of agriculture more than 10 000 years ago mankind has had to deal with a resourceful and fearless enemy, Schistocerca gregaria, the desert locust. Normally loners, every so often these natives of the deserts from West Africa to India turn into vast, voracious swarms that leave hunger and poverty behind them wherever they go.

Throughout history, farmers and governments have made attempts to repel the bands and swarms of locusts by collecting insects, creating noise, making smoke and burying and burning the insects. But all of this had little effect. With swarms sometimes extending for hundreds of kilometres, and containing billions of individuals, they conquered by sheer force of numbers.

Health concerns

It has long puzzled humans where these animals came from and where they survived. Only in the mid-20th century was it realized that the light brown solitary desert-dwelling insect was the same species as the red and yellow locusts of the plagues. Only when its biology was understood and chemical pesticides and aerial spraying became available a few decades ago, could efforts be made to control the insect. But large-scale pesticide use also raised real concerns for human health and the environment.

On the seventh-floor Emergency Centre for Locust Operations (ECLO) at FAO Headquarters in Rome, Keith Cressman, FAO's locust forecaster, checks current environmental conditions and locust population data from the three computer screens on his desk. The last big locust upsurge ended early in 2005 and the current alert level is green or calm.

The experts at FAO’s ECLO are readying to fight the next round in the age-old battle against locusts – wherever and whenever that may be.

“The next time,” says Cressman, “we’ll fight with new tools”.

New bio-control agents

Recent advances in biological control research, coupled with improved surveillance and intelligence, could make a big difference when the next round in the battle is fought. Such products could make it possible to sharply reduce the amount of chemical pesticides used.

One promising avenue is research currently under way at the International Centre for Insect Physiology and Ecology (ICIPE) in Nairobi. An ICIPE team headed by a Zanzibar-born chemical ecologist, Ahmed Hassanali, has identified and synthesized a specific locust pheromone, or chemical signal, that can be used against young locusts with devastating effect.

Phenylacetonitrile, or PAN for short, normally governs swarming behaviour in adult males who also use it to warn other males to leave them in peace while they mate. But, Hassanali found it has startlingly different results on juvenile wingless locusts, known as hoppers.

Hopper bands

Just as adult locusts form swarms, hoppers will, given the right conditions, stop behaving as individuals and line up in marauding bands up to 5 kilometres wide. They are only slightly less voracious than adults, who eat their own weight of food every day.

In three separate field trials – the most recent in Sudan last year – Hassanali’s team showed that even minute doses of PAN could stop hopper bands dead in their tracks and make them break ranks.

PAN caused the insects to resume solitary behaviour. Confused and disoriented, some lost their appetite altogether, while others turned cannibal and ate one other. Any survivors were easy prey for predators.

What makes PAN particularly attractive is that the dose needed is only a fraction – typically less than 10 millilitres per hectare – of the quantities of chemical or biological pesticides. This translates into substantially lower costs – 50 cents per hectare as opposed to US$12 for chemical pesticides and $15-20 for other bio-control agents.

That is clearly a major consideration in the countries in the front line – many of them among the world’s poorest.

Green Muscle

A different, but also highly effective biological approach is Green Muscle ®, a bio-pesticide developed by the International Institute for Tropical Agriculture’s biological control centre in Cotonou, Benin, and manufactured in South Africa.

Green Muscle ® contains spores of the naturally occurring fungus Metarhizium anisopliae var. acridum, which germinate on the skin of locusts and penetrate through their exoskeletons. The fungus then destroys the locust's tissues from the inside. This is definitely not good news for locusts, but the fungus has no effect on other life forms.

Although Green Muscle ® is already successfully used in Australia, its introduction in Africa and Asia is being slowed by several factors. These include a need for further large-scale trials, official approval of the product in several countries, and a relatively short shelf-life in its normal ready-to-spray liquid form. One drawback is that it takes days to kill the locusts. It is also relatively expensive and large-scale production would need to be organized.

A solution would be to store the product in powder form and dilute it just before use. Hassanali’s team has also shown that, if used in combination with a small amount of PAN, only a quarter of the normal dose of Green Muscle ® is needed.

Insect Growth Regulators

Also being readied for the modern locust fighter’s armoury is a class of products known as Insect Growth Regulators, or IGRs, which influence the ability of hoppers to moult and grow properly. They have no direct toxic effects on vertebrates.

IGRs are effective for several weeks after application and can be used in so-called barrier treatments. In this method only narrow swathes of the product are applied, perpendicular to the direction of the marching hopper bands. Only 10 percent of the amount used in blanket treatment is needed. After marching over one or two barriers the hoppers absorb enough product to die while moulting.

As with PAN and Green Muscle ®, however, IGRs need to be aimed at locusts at an early stage in their lives, before they take to the air. That, in turn, requires an advanced level of surveillance and intelligence-gathering to make sure that any locust concentrations are nipped in the bud.

eLocust2

Although back at ECLO Keith Cressman has satellites, computers and mathematical models at his disposal, the weak link in the chain has been the time it takes to get good information from the field.

The mobile ground teams whose job it is to keep tabs on locust populations have to work in some of the world’s remotest, hottest and sometimes (for environmental and security reasons) most hostile places. A week or more might go by before a report from, say, the central Sahara, reached Cressman’s desk. By that time the locusts – “They don’t need visas,” he says – would quite likely have moved to another country or continent altogether.

This will soon change however. Field teams are now being issued with special hand-held devices to record vital locust and environmental data and relay them back to their own headquarters and on to Rome in real time.

Developed by the French Space Agency CNES, the eLocust2 device is able to bounce the information off communications satellites and have the data arrive in the National Locust Control Centre in the affected country a few minutes later, from where they are passed on to Cressman for analysis. In case of unusually heavy hopper concentrations, immediate action can be taken to make sure that the locusts never grow old enough to swarm.

Back to the field

Writing in Science magazine, locust expert Martin Enserink gave the following graphic description of a locust population gone out of control:

“On a beautiful November morning (in Morocco) it’s clear, even from afar, that something’s terribly wrong with the trees around this tiny village. They are covered with a pinkish-red gloss, as if their leaves were changing colour...

"As you get closer, the hue becomes a wriggling mass; a giant cap of insects on every tree, devouring the tiny leaves. Get closer still and you’ll hear a soft drizzle: the steady stream of locust droppings falling to the ground.”

Such nightmare visions, and locust plagues with them, may one day be a thing of the past.