Life cycle of Rotifera

Submitted by Mousumi Sepai, Last Modified on 2019-11-10

Life cycle of Rotifera

In rotifera there are amictic females which produce large, thin walled and developed eggs which are incapable of being fertilised and developed into females. Where as the mictic females lay small sized, haploid, thin walled mictic eggs, Which are capable of being fertilised specially during later phase of the year when sexual season approaches.

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

Submitted by Mousumi Sepai, Last Modified on 2019-11-09

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

Kingdom => Animalia

Phylum => Chordata

Subphylum-Eurochordata => Tunicata (Body covered by an external covering called tunic . It is so called because it has a protein)

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.

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