A Visual Comparison Of Approximate Sizes Of Different Rocket Boosters

SHARKS HAVE INCREDIBLE HEALING ABILITIES

Wound healing is important for sharks from the earliest life stages, for example, as the ‘umbilical scar’ in viviparous species heals, and throughout adulthood, when sharks can incur a range of external injuries from natural and anthropogenic sources.

Recently, researchers documented the rapid healing of the Blacktip reef sharks (Carcharhinus melanopterus) following an internal tagging procedure involving a small incision in the belly of the shark to implant the transmitter. This not only shows that sharks are healing quickly but also that they are robust to this tagging procedure which is important to know as a scientist when you work with free-living animal.

Small umbilical wounds in neonates decreased in surface area by 71% in less than a week and were barely detectable after 24 days.

Also in the study were reported two cases of survival after fin removal due to targeted shark-finning in which the basal wound of fin removal healed well and the sharks were observed alive a while after injury, swimming without their dorsal fin. However, even if they survive for un unknown time, the removal of the dorsal fin may greatly affect their daily life and in turn their fitness (and most of finned sharks may not survive).

Sharks, and probably rays too may be resilient to injuries, showing rapid healing from minor wounds and long-term survival from even major mechanical injuries. These are positive findings for elasmobranch conservation, especially considering that up to a quarter of all shark and ray species worldwide are threatened with extinction. 

Despite this incredible ability, researchers encourage minimal handling time and stress when releasing sharks after fishing or by-catch, which could include cutting a line near the hook instead of repeatedly attempting to remove the hook. Anglers should also be made aware that sharks can recover from mechanical injury; therefore, sharks should be released even if the animal sustains injuries during the capture process.

Chin et al 2015. Blacktip reef sharks (Carcharhinus melanopterus) show high capacity for wound healing and recovery following injury. Conservation Physiology 

Easy network graphs for Tableau with NodeXL

Download Node XL

Enter some edges, add additional measures and/or dimensions

Click “Workbook Columns” -> tick “Layout”

Choose your graph type and layout

Click “automate”

Delete row 1 in both Edges and Vertices.  Save Edges and Vertices as CSV.

Create a new Excel workbook and import Edges and Vertices as two new sheets.

In “Edges” create 4 new columns: Vertex1x, Vertex1y, Vertex2x, Vertex2y. Perform a VLOOKUP Vertex 1 from “Edges” against Vertex in “Vertices” to populate the x and y and then do Vertex 2.  

Select cells in “Edges” (CTRL-A) and Paste special -> values only. We can then delete “Vertices”. 

Copy “Edges” to another sheet.  Rename Edges “From” and the copy “To”.  Add a column in both called “pathorder”.  “From” will be populated with “1″ and “To” will be populated with “2″.

Then open Tableau, choose Excel, open with legacy connection. 

Choose custom SQL and enter the query:

SELECT *, Vertex1x AS [X], Vertex1y AS [Y] FROM [From$] UNION ALL SELECT *, Vertex2x AS [X], Vertex2y AS [Y] FROM [To$]

Then in Tableau, build a dual axis, line mark type for edges, and circle for vertices.  Change ID, pathorder, X and Y to dimensions.

You should now have a network graph in Tableau.

Note, I haven’t gone in depth about the mathematics here.  It’s just a simple example.  Also, you maybe thinking, what if I have more than 500,000 rows.  Well, just append your CSVs into Postgre SQL and do the union there.  Or maybe you want to generate a VBA Macro to automate this process? If you do, you can always contribute your script to a github for Tableau.

Link to workbook here.

At this point, I’d also like to credit:

Robert Mundigl

Clearly and Simply network graphs in Tableau and 

Bora Bevan 

Dynamic Network Graph Layouts in Tableau using R

Did you know that ants flow like melted cheese?

“Just do your work. And if the world needs your work it will come and get you. And if it doesn’t, do your work anyway. You can have fantasies about having control over the world, but I know I can barely control my kitchen sink. That is the grace I’m given. Because when one can control things, one is limited to one’s own vision.”

— Kiki Smith

Snoop Dogg Accidentally Made This Tiny Romanian Village Famous

The rapper put Romania on the map, by mistake.

No, really, you should http://visitbogata.com/ and so should Snoop D.O. double G.

A Vogel spiral of 10,000 dots, in which only the prime numbers are highlighted.

by Danteh1

The History of Baking http://daily-infographic.tumblr.com/

Children playing in the hay

source: La bunici

Soggy skies couldn’t dampen the mood in this medieval city as the 15th #Transylvania Intl. #Film #Festival wrapped June 4, just weeks after another strong showing by Romanian helmers in #Cannes.

Keep reading