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Retrogressive metamorphosis of Ascidia sp. - definition - classification - development stages

Submitted by Mousumi Sepai, Last Modified on 2019-11-18

Ascidians definition: Ascidians are sac-like marine invertebrate filter feeders which composed of a tough outer "tunic" made of the polysaccharide cellulose. Scientific classification and overview of Ascidiacea. Ascidians example, Tunicates, Metamorphosis of adult solitary Ascidian. Development of solitary ascidian tadpole larva. solitary tadpole larva's characters, Diagram of Solitary Ascidian tadpole Larva. Fixation and metamorphosis of tadpole larva.

Phylogenetic relationship between Sipunculids and Annelid

Submitted by Mousumi Sepai, Last Modified on 2019-11-19

Sipunculids vs Annelid. Features difference external segmentation, repetition of internal organs, septa between segmentation, cuticle materiel, moulting, body cavity, circulatory system. In Sipunculids species there are no External segmentation, The internal organ of the Annelid are repeated. Circulatory system open outflow, return via branched vein. Circulatory systems are closed in most species. Annelids moult their jaws, and leeches moult their skin.

Example of jsTree to get all checked nodes

Submitted by Asif Nowaj, Last Modified on 2019-11-08

If you are looking for answer of the question how to get all checked nodes of jsTree, then you are at the right place. Often a scenario comes when user select some nodes and then based on some event like submit button to store the selection in the server. Then you want the list of checked node details to be sent to the server.

There could be different requirements of this kind, below are two kinds explained:

  1. Get all checked node when tri-state is enabled, that is, parent node check, automatically checked child nodes.
  2. Get all checked node with two states, that is, you can check parent node and child node independently.

Example of jsTree with different context menu for different node type

Submitted by Asif Nowaj, Last Modified on 2019-11-08

If you are wondering on how to let jsTree show different context menu for different nodes, you are at the right place. Context menu appears when a user right-click on a node. Probably you already have seen on how to show a customise context menu on jsTree's node right click. if not please have a quick look at jsTree with Custom Context Menuthen come back here to see how you can show different right click menu based on different condition.

For example, if you want to allow your users to delete "files" but not "folders" (by hiding the "delete" option from the context menu for folders) or to show Create new file, create new folder option for folders but not for files, please see the example below.

In this example, you will also be able see how you can use different icons for different nodes and different nodes for leaf nodes.

Example of jsTree with lazy loading and AJAX call

Submitted by Asif Nowaj, Last Modified on 2019-11-08

When you tree data grows large and large enough that loading whole tree data is too much heavy and time consuming, then your best choice would be to use lazy load. Lazy loading means only immediate child nodes will be loaded on the fly whenever user clicks on a node that has children.

In this scenario, jsTree will perform the ajax requests as user browses the tree. Below example will depict lazy loading with jsTree and AJAX call. You can go through this example to understand how dynamically loads data with ajax call. In this example, an existing data source URL has been used from jsTree but you can use your own WebAPI or MVC url to get the data securely.

SQl Server / AWS RDS - How to remove a cached query plan - High CPU issue

Submitted by Asif Nowaj, Last Modified on 2019-11-08

Recently, an issue was experienced where AWS RDS SQL server was consuming 100% CPU throughout the day. CPU capacity was really high hence it was quite unexpected. Upon investigation, it was found that there was a particular query was taking huge CPU during execution. But surprisingly, when the query was executed from SQL management studio, it was running fine, even it was executing within a second.

Please see below how to investigate high CPU usage issue for AWS RDS. This could be applicable for standalone SQL Server too.

How to free up space in local disk C on your PC or laptop

Submitted by Asif Nowaj, Last Modified on 2019-11-08

There are many ways you can clean up hard disk space from your PC or laptop. It is a very common problem when your laptop or PC goes out of space and behave weirdly. When your disk, especially your Operating System (OS) drive that C: drive is running out of space, then the symptom will appear as differently with your other works. Hence, first check your OS drive space if your email client is not responding, your computer's performance is degraded, starting of your laptop is taking too much time, your game play is lagging.

If you see that your OS drive space is less and you need to clear out some of your important files to get some more space, request to follow these steps before taking any action.

How to merge SVN branch from trunk

Submitted by Asif Nowaj, Last Modified on 2019-11-08

In general, any change which is required to mitigate any priority issue in production, is done directly in trunk at times. At same time, development team is continue to work in separate branches. Hence a time comes when any changes which is made directly in trunk is merged with branches to get it tested.

Below are the steps that can be followed if you want to merge trunk version of code into your branch.

Steps:

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