Am o intrebare

[Coesite]

Scuze dar nu am stiut unde altundeva sa intreb...

Mai demult zicea cineva ceva de un site cu foarte multe articole stiintifice gratis, stie cineva adresa?

Merci mult!

[HarapAlb]

Unde ai auzit ca ar exista siteuri cu articole gratis ?
Poate sunt reviste cu acces liber (open access).

[Coesite]

Sunt situri cu articole mai vechi ce oricum sunt gratis, numai ca sunt aranjate sub forma unei baze de date. Acum eu nu stiu sigur daca de aici stiu sau de altundeva dar exista in mod cert, pentru ca le-am mai folosit dar nu mai tin minte cum se cheama sau ce adresa aveau.

Merci mult oricum!

[HarapAlb]

Google: free access scientific journals

[Coesite]

Merci, dar am incercat si eu asta si dupa cum bine vezi nu a mers

Merci mult oricum!

[AlexandruLazar]

Arxiv? http://arxiv.org/

Nu e foarte grozav însă, mă mir că n-au şi articole despre perpetuum mobile.

[HarapAlb]

arxiv e un site unde se trimit articolele inainte de a fi publicate in reviste de specialitate. Ajuta la raspandirea rezultatelor inainte de publicarea lor oficiala intr-o revista (proces care poate dura pana la un an de zile!).

[Coesite]

Multumesc Alexandru, dar pe mine ma intereseaza Earth Sciences si Arxiv se pare ca su includ si aceasta categorie.

[HarapAlb]

... pe mine ma intereseaza Earth Sciences ...

Vezi ca au Geophysics: http://arxiv.org/list/physics.geo-ph/recent

[Coesite]

Da... neinteresant

[iulia]

(nu e revista, dar e util) http://www.emolecules.com/ - structure search, desenezi structura compusului si iti da denumirea etc.

http://pubs.acs.org/journal/jacsat - au si articole full-text gratis, doar rabdare sa ai sa cauti (asta e.. stiinta mai cere si rabdare)

http://www.sciencedirect.com/ - cam la fiecare revista e si un numar gratis.. mai sunt si altele gratis, trebuie doar sa cauti mai mult

http://www.beilstein-journals.org/bjoc/home/home.htm - chimie organica, gratis

The Beilstein Journal of Organic Chemistry is a peer-reviewed, Open Access journal that publishes research articles on all aspects of organic chemistry. The content is freely accessible online and is publicly archived. Authors can publish scientific articles free of charge as the BJOC is completely funded by the Beilstein-Institut, a non-profit foundation committed to advancing communication and information in chemistry. Editor-in-chief of the BJOC is Jonathan Clayden, University of Manchester, UK.

http://www.mdpi.org/molecules/

Molecules, A Journal of Synthetic Organic Chemistry and Natural Product Chemistry. ISSN 1420-3049, CODEN: MOLEFW, Journal DOI: 10.3390/molecules, Vol. 13, 2008. Published online monthly. Printed (monthly or yearly) and CD-ROM (yearly) editions are also available. © 2008 by MDPI (http://www.mdpi.org).
Molecules was the first peer-refereed chemistry journal supporting the deposit and exchange of rare chemical samples. Molecules is indexed and abstracted very rapidly by CrossFire Beilstein, Chemical Abstracts (CAplus); Science Citation Index Expanded; Chemistry Citation Index; Current Contents/Physical, Chemical & Earth Sciences; SciSearch, Research Alert; PubMed; Scopus and Google Scholar. The Impact Factor for Molecules is 1.113 (2005), 0.841 (2006, the reduced impact factor is due to the adverse impact of non-Open Access papers published in 2005; see the supporting data and an explanation published in a recent Editorial), 0.940 (2007).


http://www.orgsyn.org/

Since 1921, Organic Syntheses has provided the chemistry community with annual collections of detailed, reliable, and carefully checked procedures for the synthesis of organic compounds. Some procedures describe practical methods for the preparation of specific compounds of interest, while other procedures illustrate important synthetic methods with general utility. Each procedure is written in considerably more detail as compared to typical experimental procedures in other journals, and each reaction and all characterization data has been carefully "checked" for reproducibility in the laboratory of a member of the Board of Editors.
Organic Syntheses procedures may be accessed either via the tables of contents of individual volumes ("journal mode") or by conducting structure and keyword searches ("database mode"). Specific in dividual procedures can be accessed via the table of contents for either the original annual volume or collective volume in which the procedure appeared. "Database mode" allows users to simultaneously search all volumes of Organic Syntheses by keywords or by inputting structures and substructures. Structure searching requires the ChemDraw plugin which can be downloaded according to the instructions found in the left margin. Articles from future volumes of Organic Syntheses that are not yet incorporated in the searchable database can be accessed on the "Org Syn Express" page.

http://www.arkat-usa.org/ - chimie organica, gratis

http://www.ch.cam.ac.uk/c2k/cj/organic.html - lista cu reviste

@Coesite:
Trebuia sa specifici totusi un domeniu.. acum ar fi bine fiecare sa puna din domeniul lui

[iulia]

Fiindca nu am putut sa editez ce am scris ieri, completez aici:

http://www3.interscience.wiley.com/cgi-bin/jhome/27380   European Journal of Organic Chemistry

http://pubs.acs.org/journals/orlef7/index.html  Organic Letters

La fiecare se gasesc si articole gratis. Cel mai bine e sa stii exact ce vrei ca sa cauti mai eficient.
La toate revistele ACS pentru articolele mai vechi in loc de abstract se da prima pagina, iar daca ai noroc articolul incepe de sus si e mai mult decat ar fi intr-un abstract.
Un exemplu: http://pubs.acs.org/doi/abs/10.1021/ja00515a013

[Coesite]

Merci Iulia! Am mentionat totusi un domeniu...

[iulia]

Cu placere!
Si scuze, n-am observat