Chem-is-try

Some files that embed here were upload to Skydrive, and may have difference touch with the file embed using google upload. And may some user feel confuse, how to make a copy of that file or how to download it. It is so easy. Just follow these instructions:

There an information for who have access to sciencedirect.com by using account that registered on ristek.go.id. For about two weeks ago sciencedirect server has changed the method for login and access journals there. If on old version you just need to log in on pustaka.ristek.go.id after that done you can access all journal database like sciencedirect, proquest, and the other providers whom has signed contract with ristek.go.id.

But with new system from the sciencedirect server, to access that one you just need click on sciencedirect icon. Then you will direct to new tab on your browser, you will go to a proxy system that created by sciencedirect (may it for make more secure) and you will get message alert to input your username and password. 

After that all done you can access all document on sciencedirect (except books and some version that release under year of 2000) and download them.

This method just for members of ristek.go.id. And for some student in Indonesia also can access sciencedirect for free if their university has signed contract, some of them are UGM, Unair, Undip, and other popular university.

Did you a windows user? If yes, you've common use microsoft office that published by Microsoft. One of the popular product of microsoft office software are version 2007 and version 2010. But in this post, I'll explain you step by step to rearm to extend the inactive license of your office 2010 only for six months.

But for the science project competition in this year totally different with last year, because for this year the science project are divide into 4 categories like Geo-Science, Software application, Building Architecture, and Research Product. And the all categories topic are Energy, Environment, and Health.

To know details about this competition please go to OSNPertamina homepage and to join the competition please go to register page.

DIKTI has announced about the guidance of PKM (Program Kreativitas Mahasiswa) for 2013/2014. Like the year of 2012/2013, it was divided into seven groups, e.g. PKM-P, K, M, KC, T, GT, and AI.

For five groups except GT and AI, for the fund allocation DIKTI has give the minimum and maximum number of money will be transfer to the group with the proposal whom pass the selection, it is around 2,5 to 12,5 millions rupiah.

This is the preview of the guidance of PKM 2013/2014 and be the success applicant, never give up cause knowledge never end and always growth.

Hi, are one of you a scholarship hunter and J-lovers? I'll give an information to you about two scholarships, there are provide by INPEX and Todai by MEXT U to U for program year 2014. And the deadline of these application on November, 2014. The important keys to get one of this scholarship is you must have/create a good relation/communication with your Professor future.

INPEX application

and the other requirement

Todai (Tokyo University, especially Graduate School of Science) application

Good luck to you who will be the scholarship hunter and be the elected scholars.

Do you know about biopolymer chitosan?

Before we touch chitosan, for the first I will give explanation about bioploymer.

Biopolymer consists of two words such as bio and polymer. The meaning of bio refer to organism/natural and the word of polymer have meaning the supramacromolecule that construct from a variant of monomer or combine of two or more monomer and it can have biggest weight of molecular. So, we can redefine biopolymer with the two words before, it have means naturally supramacromolecule (can be collect from organism/microorganism) that construct from a variant of monomer or combine of two or more monomer and it can have biggest weight of molecular.

Chitosan is the second most abundant natural polymer and has many useful applications in the area of biomedical engineering, including gene delivery, due to its cationic character at physiological conditions. Chitosan shows limited solubility at neutral pH, and forms polyelectrolyte complexes with polyanions, often resulting in precipitation. Chitosan  also has  been  used  as  a  support  for  enzyme  immobilization  (Klein  et  al.,  2012;  Kuo  et  al.,  2012;  Li,  Cai,  Zhong,  &  Du, 2012;  Muzzarelli,  1980;  Orrego  et  al.,  2010).  Chitosan,  isolated from  chitin,  is  the  linear  and  partly  acetylated  (1–4)-2-amino-2-deoxy--d-glucan  (Muzzarelli,  1977,  2012;  Muzzarelli  et  al.,  2012). Chitosan is a cationic natural copolymer of glucosamine and biodegradable mucoadhesive polysaccharide derived from crustacean shells. Chitosan particles have been shown to increase transcellular and paracellular transport of macromolecules across the intestinal epithelial monolayer andused successfully todeliver adrugorally toenterocytes, Peyer’s patches and mesenteric lymph nodes (Desai et al., 1996; vanderLubbenet al., 2001;Ouji et al., 2002). Chitosan has been used widely for the production of biodegradable and biocompatible micro- and nanoparticles.