Here, houses are amazingly alive.
Here is one of our Matoutou (there are at least two):
Monday, October 29, 2007
Dvp Sr200p Unlock Region
One of my flatmates.
Here, houses are amazingly alive.
Here is one of our Matoutou (there are at least two):
Here, houses are amazingly alive.
Here is one of our Matoutou (there are at least two):
Tuesday, October 23, 2007
Programming Sequoia Remote 2001
Result analysis of the branches; will something happen to them?
Well, I needed anyway these data to use when I analyze the results of assays of 13C. In addition, it allowed to cast a sharper eye on this story at UC Qualea. To the naked eye, it was not much. Maybe the computer it will fare better, look if there is consistency between the two markers used by UA Sanoja.
And then, well, since I spent quite some time to develop a measurement system Quick, try to return as much more than: my supervisor had the idea to use it to see if there is generally a good correlation between the area of a leaf, and the length between -node that precedes it. The ideal is that it is good enough that we have not measured the leaf area, and we can use this length instead.
Come this ...
Bon, bah it seems to stick a bit ...
Anyway, the coefficient of correlation is not terrible, 0.54 ... can do better.
Another branch?
Ah, that's better ! 0.84 ... but it is still not extraordinary.
Yet another branch ...
There is squarely cata: nothing.
the balance sheet, a bunch of twigs in which there is a correlation "bof" of 0.5, the 0.7, sometimes 0.8. And a handful of branches in which there is really nothing.
And if I look at all the branches? 0.416
Not much so, that is even closer to 0 than 1 ...
Conclusion: The statistical model that would permit to measure the lengths of internodes areas instead of leaves, shredded it. And I confirm: on reggression simple, I found an R of 40%, which means that the lengths of internodes can explain only 40% of the variability of leaf area. It is not nothing, but it is not sufficient to lead to an application.
And this reflects in fact, if I turn the study of all the extreme variations of leaf area and length of internodes which presumably mark of stunting (limit of UA and Co.) I explain nothing of the variability of leaf area using the lengths of internodes.
This means that it is not the internodes Because one is shorter than the combined sheet is small. By cons, if there is a limit of UA any accident (dead apex example, when the terminal bud, which produces the stem dies, and that's another bud who rebuke the relay) actually, we tend to find a shorter inter-node, and a smaller sheet.
But even knowing this is a return to square one: we do not distinguish clearly consistent association between length of internodes and leaf area, no basis to find out for sure the CPU.
We will therefore have difficulty in dating our leaves.
bad, it was practical: since the purpose of the experiment is to study the seasonal variation of deltaC13, we could analyze only sets of leaves formed in the year.
Here we find ourselves obliged to take a series of 10 sheets without even knowing if they were not formed during the same season or over several years ...
We will not know until afterwards, when the analysis deltaC13 have already been paid (and is not given ... 6 to 7 euros per sample).
For Virola, the balance is roughly the same: no strong correlation between length of internodes and leaf area, and lengths of internodes are not a good marker of UC.
For cons, the areas of leaves they are a good marker UA, and may allow diagnosis in the field.
was not lost everything, at least it is confirmed: we will respect our dating Virola leaves.
One of the fun in science is that we never lost anyway: we test hypotheses. That the tested hypothesis is confirmed or refuted, it has learned something anyway.
But this thing may or may not lead to an application ...
In this case, it is grated.
Well, it's no big surprise, this can be explained. If I turn the extreme variations of leaf area are likely to walk for UA 
Well, I needed anyway these data to use when I analyze the results of assays of 13C. In addition, it allowed to cast a sharper eye on this story at UC Qualea. To the naked eye, it was not much. Maybe the computer it will fare better, look if there is consistency between the two markers used by UA Sanoja.
And then, well, since I spent quite some time to develop a measurement system Quick, try to return as much more than: my supervisor had the idea to use it to see if there is generally a good correlation between the area of a leaf, and the length between -node that precedes it. The ideal is that it is good enough that we have not measured the leaf area, and we can use this length instead.
Come this ...
Bon, bah it seems to stick a bit ...
Anyway, the coefficient of correlation is not terrible, 0.54 ... can do better.
Another branch?
Ah, that's better ! 0.84 ... but it is still not extraordinary.
Yet another branch ...
There is squarely cata: nothing.
the balance sheet, a bunch of twigs in which there is a correlation "bof" of 0.5, the 0.7, sometimes 0.8. And a handful of branches in which there is really nothing.
And if I look at all the branches? 0.416
Not much so, that is even closer to 0 than 1 ...
Conclusion: The statistical model that would permit to measure the lengths of internodes areas instead of leaves, shredded it. And I confirm: on reggression simple, I found an R of 40%, which means that the lengths of internodes can explain only 40% of the variability of leaf area. It is not nothing, but it is not sufficient to lead to an application.
And this reflects in fact, if I turn the study of all the extreme variations of leaf area and length of internodes which presumably mark of stunting (limit of UA and Co.) I explain nothing of the variability of leaf area using the lengths of internodes.
This means that it is not the internodes Because one is shorter than the combined sheet is small. By cons, if there is a limit of UA any accident (dead apex example, when the terminal bud, which produces the stem dies, and that's another bud who rebuke the relay) actually, we tend to find a shorter inter-node, and a smaller sheet.
But even knowing this is a return to square one: we do not distinguish clearly consistent association between length of internodes and leaf area, no basis to find out for sure the CPU.
We will therefore have difficulty in dating our leaves.
bad, it was practical: since the purpose of the experiment is to study the seasonal variation of deltaC13, we could analyze only sets of leaves formed in the year.
Here we find ourselves obliged to take a series of 10 sheets without even knowing if they were not formed during the same season or over several years ...
We will not know until afterwards, when the analysis deltaC13 have already been paid (and is not given ... 6 to 7 euros per sample).
For Virola, the balance is roughly the same: no strong correlation between length of internodes and leaf area, and lengths of internodes are not a good marker of UC.
For cons, the areas of leaves they are a good marker UA, and may allow diagnosis in the field.
was not lost everything, at least it is confirmed: we will respect our dating Virola leaves.
One of the fun in science is that we never lost anyway: we test hypotheses. That the tested hypothesis is confirmed or refuted, it has learned something anyway.
But this thing may or may not lead to an application ...
In this case, it is grated.
Well, it's no big surprise, this can be explained. If I turn the extreme variations of leaf area are likely to walk for UA
Alot Of Cervical Mucus Day Before Period Is Due
continued: twigs Qualea Rosea
Same story, but small nuance: the Rose or Gonfolo Qualea Rosea has opposite leaves, which changes a bit the structure of the program to automatically adapt by seeing if the arrangement of leaves is opposite or alternate, etc. .. .
so small photos:
Same story, but small nuance: the Rose or Gonfolo Qualea Rosea has opposite leaves, which changes a bit the structure of the program to automatically adapt by seeing if the arrangement of leaves is opposite or alternate, etc. .. .
so small photos:
here is the branch ...
We will have a small threshold to distinguish it from the bottom.
That, like this.
The program searches the petioles and stem.
That's done and he was then able to calculate the area of leaves.
And here are the petioles.
They are grouped in pairs to identify nodes.
And that's it!
Reality of operation: manual, 12 to 25 minutes of action per shoot, without measuring the area of leaves (only length and width). For information: 5mn photo, 1 min of treatment.
Any beneficial! ... except for me, since I spent umpteen hours to write the program in question and to debug ...
Monday, October 22, 2007
How To Dress Like A Grunge Rocker
September. One of transects
And now, the program has now been extracted from the bottom branch, and has redéformé taking account of the yellow markers.
Hop, he found the petioles ... and some that will remove parasites.
That leaves, and their range.
The branch ...
The branch and its nodes ...
The branch, its nodes, and lengths of internodes!
Soon, the same treatment on Qualea Rosea, with a small additional subtlety; Qualea has opposite leaves alternate and not as Virola ...
And then, the results of the analysis ...
Suspense; markers proposed by UC Sanoja Are these neat young twigs Qualea? Are visible and coherent? Can we deduct the leaf surfaces of the lengths of-noueds?? 
All small manipulations of semptembre ...
First, he had taken leaves of individuals of 3 species (Virola Mickaelii, Qualea Rosea and Eperua grandifolia) trees to measure their "deltaC13.
Being a bit lazy, I'll copy part of a small summary, by transferring the forms and everything that's going a bit too much detail:
Delta C13 results from a balance between the action of rubisco that discriminates and that if she was alone in the game would fix around 29 ‰, and the diffusion of carbon 13 that if it was only fixes the rate-limiting delta C13 to 4.4 ‰.
Its value tells us about the character thus limiting the diffusion of carbon 13, and is well correlated with WUE is defined as the ratio of the rate of CO2 uptake by leaf area (A) conductance stomach for the vapor water (gs). The WUE is used to account for the efficiency of water use of a plant.
This is achieved by mass spectrometry in the gas phase of 1 mg of dried leaves of light at 70 ° C for 48 h and crushed at least 50 microns.
There is a local gradient of carbon 13, and isotopic composition of air varies over time. Also assumptions may be questionable, the isotopic signature sheets could depend on controllable environmental variables, including the exposure of leaves taken, and their date of establishment. It
n'échantillonne only individuals in the shade, CP = 1 (index Dawkins, 1 is for trees completely covered under, who do not receive direct light) to limit the effect of illumination; should be checked a posteriori the equivalence of exposure between branches taken in ensuring that the variability within the LMA series is over the variability between series, the branches are removed at a constant height on individuals of the same size growing out shoal.
was sampled along the leaf series (on an axis relative age known)
For each series we estimate an intra-and inter UC UC UC to test the effect
There is always the largest insertion of leaves collected (numbering basipetal ). It describes each branch (in length, limits likely ua if any) and basic information of the plant on which the branch is taken will be recorded (position, height, number of branches / points growing number floors where applicable).
So here I am in mop to find branches of individuals of these three species, only in the shade, not in a shallow, if not for the seasonal variability is damn (he's standing in water throughout the year) so rather plateau, on sandy soil ...
He must have a minimum number of CPUs.
A growth unit is a set length of stem, leaves, etc. ... implemented at once. Between two CPUs, there is a stop of growth more or less materialized by a scar, a shorter inter-nodes, a small pair of leaves etc ... etc ...
is important because interest take several sheets in a single CPU is low if it is implemented in a single instance.
And above all: off-plot, because there is no question of going massacrerdes young trees on the plots studied ... It, of course, that means going outside the transects wandering ... So
«remake, I'm out and about in search of stuff still rather quiet, I need to measure before they take a branch that I was back home for analysis. Accompanied by little of course: it's the holidays, apart from students, there are not many people in the lab.
is an opportunity to meet people.
agoutis, some sparrows, a coral snake on which I failed to walk a huge Grage (a snake too) ... many animals you can not see, or just as it is too many.
So I brought my branches, it remains to carefully measure all lengths between nodes, the length, width, leaf area ...
The beard ... the repetitive possible, using ... boring. A real work of an intern.
But I have a camera, tripod, a large cardboard box ... I will buy colored pins, graph paper ... and I'll do the photometry!
is true after all, so much to measure more ... while on a photo well done, you can do everything at once!
So the device:
First, he had taken leaves of individuals of 3 species (Virola Mickaelii, Qualea Rosea and Eperua grandifolia) trees to measure their "deltaC13.
Being a bit lazy, I'll copy part of a small summary, by transferring the forms and everything that's going a bit too much detail:
Delta C13 results from a balance between the action of rubisco that discriminates and that if she was alone in the game would fix around 29 ‰, and the diffusion of carbon 13 that if it was only fixes the rate-limiting delta C13 to 4.4 ‰.
Its value tells us about the character thus limiting the diffusion of carbon 13, and is well correlated with WUE is defined as the ratio of the rate of CO2 uptake by leaf area (A) conductance stomach for the vapor water (gs). The WUE is used to account for the efficiency of water use of a plant.
This is achieved by mass spectrometry in the gas phase of 1 mg of dried leaves of light at 70 ° C for 48 h and crushed at least 50 microns.
There is a local gradient of carbon 13, and isotopic composition of air varies over time. Also assumptions may be questionable, the isotopic signature sheets could depend on controllable environmental variables, including the exposure of leaves taken, and their date of establishment. It
n'échantillonne only individuals in the shade, CP = 1 (index Dawkins, 1 is for trees completely covered under, who do not receive direct light) to limit the effect of illumination; should be checked a posteriori the equivalence of exposure between branches taken in ensuring that the variability within the LMA series is over the variability between series, the branches are removed at a constant height on individuals of the same size growing out shoal.
was sampled along the leaf series (on an axis relative age known)
For each series we estimate an intra-and inter UC UC UC to test the effect
There is always the largest insertion of leaves collected (numbering basipetal ). It describes each branch (in length, limits likely ua if any) and basic information of the plant on which the branch is taken will be recorded (position, height, number of branches / points growing number floors where applicable).
So here I am in mop to find branches of individuals of these three species, only in the shade, not in a shallow, if not for the seasonal variability is damn (he's standing in water throughout the year) so rather plateau, on sandy soil ...
He must have a minimum number of CPUs.
A growth unit is a set length of stem, leaves, etc. ... implemented at once. Between two CPUs, there is a stop of growth more or less materialized by a scar, a shorter inter-nodes, a small pair of leaves etc ... etc ...
is important because interest take several sheets in a single CPU is low if it is implemented in a single instance.
And above all: off-plot, because there is no question of going massacrerdes young trees on the plots studied ... It, of course, that means going outside the transects wandering ... So
«remake, I'm out and about in search of stuff still rather quiet, I need to measure before they take a branch that I was back home for analysis. Accompanied by little of course: it's the holidays, apart from students, there are not many people in the lab.
is an opportunity to meet people.
agoutis, some sparrows, a coral snake on which I failed to walk a huge Grage (a snake too) ... many animals you can not see, or just as it is too many.
So I brought my branches, it remains to carefully measure all lengths between nodes, the length, width, leaf area ...
The beard ... the repetitive possible, using ... boring. A real work of an intern.
But I have a camera, tripod, a large cardboard box ... I will buy colored pins, graph paper ... and I'll do the photometry!
is true after all, so much to measure more ... while on a photo well done, you can do everything at once!
So the device:
The pins hold the green stem and leaves stretched, red pins mark a leaf scar, and yellow pins are spaced 5cm and can deliver all scale taking into account the deformation related to the photo.
Then he had to write a small program to process these images, a program that isolates the leaves, class and measure their area, find the nodes, and measuring the areas between the nodes, and gathers all ... A
After all this effort is, my supervisor decided to take the opportunity to see if there is a correlation between different markers in UA Qualea: the length between nodes, and using the leaves. In addition to allowing us to pinpoint the CPU, this could be the basis for a model calculating the leaf area from the lengths of internodes ... more need to measure the leaves on the ground (which is very tedious), a simple measure of length would have been enough! So
graphics outputs: Virola on first;
must initially thresholded image. Not very complicated ... The program recorks holes sheets etc. ...
And now, the program has now been extracted from the bottom branch, and has redéformé taking account of the yellow markers.
Hop, he found the petioles ... and some that will remove parasites.
That leaves, and their range.
The branch ...
The branch and its nodes ...
The branch, its nodes, and lengths of internodes!
Soon, the same treatment on Qualea Rosea, with a small additional subtlety; Qualea has opposite leaves alternate and not as Virola ...
And then, the results of the analysis ...
Suspense; markers proposed by UC Sanoja Are these neat young twigs Qualea? Are visible and coherent? Can we deduct the leaf surfaces of the lengths of-noueds??
Monday, October 15, 2007
Game Shoot Arrows At Bubbles
Paracou
Small video not very good, but I'd like better the transect output of a parcel of Paracou with the camera in front:
Small video not very good, but I'd like better the transect output of a parcel of Paracou with the camera in front:
Wednesday, October 3, 2007
Plan Construction Kart Buggy
Charlot.
is a atele, or spider monkey named because he uses his tail like a 5th arm.
It was collected by Pascal Petronelli, CIRAD botanist who lives in Paracou when he was a few months, his mother having been killed by hunters.
He has lived in the camps Paracou in a cage where he seems to go well as he wants and he looks out a bit as he wants.
To the amusement of visitors. 
Here is one of tenants camps Paracou; Charlot.
is a atele, or spider monkey named because he uses his tail like a 5th arm. 
It was collected by Pascal Petronelli, CIRAD botanist who lives in Paracou when he was a few months, his mother having been killed by hunters. 
He has lived in the camps Paracou in a cage where he seems to go well as he wants and he looks out a bit as he wants.
To the amusement of visitors. 
And the despair of those who cotoyent a little longer saw his tendency to touch everything, to piss everywhere, and his skill in stealing food. Quite simply, when it is there, everything that is not under our eyes should be shut ...
Monday, August 27, 2007
How Much Olive Oil On A Dogs Food A Day
Impressions (Part One)
how the forest is Guyanese?
First, very varied, so I limit myself to what I have traveled, that of Paracou.
First, it is rather curious: if I had not kept a souvenir of my day pretty cool plane, I could forget that I changed continent. Exit
layouts hell Green, or Emerald Cathedral: the great green Guyanese remains a beast after all forest trees, some vines, saplings, shrubs, grass, a bit high ...
Ah, is ... a palm tree. And then yet another, which is really 15 meters high, and whose palms are more than twice my size.
how the forest is Guyanese?
First, very varied, so I limit myself to what I have traveled, that of Paracou.
First, it is rather curious: if I had not kept a souvenir of my day pretty cool plane, I could forget that I changed continent. Exit
layouts hell Green, or Emerald Cathedral: the great green Guyanese remains a beast after all forest trees, some vines, saplings, shrubs, grass, a bit high ...
Ah, is ... a palm tree. And then yet another, which is really 15 meters high, and whose palms are more than twice my size.
A tree is a strange curve? ah, no, it's a creeper much bigger than my arm.
... Am I dreaming? I thought I saw a dead leaf to escape from under my feet! After a minute of hunting, that's cornered, and it turns out it's a toad!
... Am I dreaming? I thought I saw a dead leaf to escape from under my feet! After a minute of hunting, that's cornered, and it turns out it's a toad!
And these vines that hang there, straight, vertical, here's one that does not touch the ground: they are the roots of epiphytes, plants that grow attached to trees, top of the canopy ...
And here is believed to cross a big wooden partition, it is the foothills of kimboto, a huge tree.
Wednesday, August 22, 2007
How Much Is A Canine Tooth For My Dog
some pictures
Paracou The camp (at least one of its carbets).
A tree buttresses.
Another series of photos:
Paracou The camp (at least one of its carbets). 
A tree buttresses. my tutor, and a kimboto (another tree buttresses), quite impressive. That said, I cross larger.
A Passion.
Paracou one day Rain.
Idem.
epiphytes.
The pink spots is a Couratari in bloom. During flowering, the whole crown turns pink. Sorry for the quality: it is not easy to photograph a tree canopy.
Subscribe to:
Posts (Atom)